CN111829601A - Synchronous measurement method and device, electronic device and storage medium for multi-state parameters of fluid - Google Patents

Abstract

The invention discloses a multi-state parameter synchronous measurement method of fluid, which comprises pre-constructing mathematical models of a plurality of state parameters with respect to the forward propagation phase and the countercurrent propagation phase of a continuous sound wave under the real flow velocity of a liquid fluid in a flowing state. ; Obtain the actual downstream propagation phase φ _d and the actual counter _- current propagation phase φ _u of the continuous acoustic wave in the liquid fluid in the flowing state _; Each mathematical model constructed can simultaneously determine each state parameter. Correspondingly, the present invention also provides a fluid multi-state parameter synchronous measurement device, an electronic device and a computer-readable storage medium.

Description

Synchronous measurement method and device, electronic device and storage for multi-state parameters of fluid medium

technical field

The present invention relates to measurement technology, in particular to a method and device for simultaneous measurement of multi-state parameters of fluid, electronic equipment and computer-readable storage medium.

Background technique

The measurement of fluid state parameters, such as fluid density, volume flow and mass flow, and gas holdup, is widely used in aerospace, petrochemical, medical, trade, and scientific research fields. Because ultrasonic measurement technology has the advantages of not invading the measured medium, fast response, and not affecting the flow field, it has been widely used in industry for pipeline flow measurement and bubble detection respectively.

For the volume flow, see Figure 1a, which is a commonly used π-type flowmeter. By installing two ultrasonic transducers at both ends of the pipeline, the volume flow in the pipeline can be obtained based on the time difference method.

而测量静水中的声波传播速度可通 过时间差法求得

从而得到密度为

其中，(1-M²)为平均Mach数：

由于流 体流速远远小于声波传播速度，即

通常认为此时，流体的流 速对流体密度没有影响，因此将流体密度近似约定为

For fluid density, the ultrasonic density measurement mainly adopts the sound wave propagation method. Since the fluid has only the bulk elastic modulus E, the sound wave can only propagate in the form of longitudinal waves in the fluid, and its propagation speed can be expressed as:

The speed of sound waves in still water can be obtained by the time difference method.

so that the density is

where (1-M ² ) is the average Mach number:

Since the fluid velocity is much smaller than the sound wave propagation velocity, that is,

It is generally believed that at this time, the flow velocity of the fluid has no effect on the fluid density, so the fluid density is approximately agreed as

For mass flow, there are direct mass flowmeters such as differential pressure mass flowmeters, thermal mass flowmeters, and twin-turbine mass flowmeters, as well as the combination of detection components (such as the combination of kinetic energy detection components and density meters/volume flowmeters). , or a combination of a density meter and a volumetric flowmeter) to obtain an indirect mass flowmeter for mass flow.

It can be seen that the single technology based on acoustic theory, such as pipeline flow volume flow measurement, bubble detection and liquid density measurement, has been developed to a certain extent. That is to say, there is currently no method or device capable of synchronously measuring fluid multi-state parameters.

的流体，通常认为流体流速对流体密度的影响不大，因此，现有的密 度测量方法中均忽略密度的变化。然而，这种方法仅仅适用于流体低 速流动的场景，若将其用于高速流动的流体，由于忽略了流速对密度 的影响，从而使得测量误差较大，从而导致测量精度较低。On the other hand, in the case of density changes, the measurement of mass flow is of great significance compared to volume flow, and for indirect mass flow meters, to measure mass flow, it is necessary to measure the fluid density first. For fluid velocity much less than the speed of sound, that is

It is generally believed that the fluid velocity has little effect on the fluid density, so the density changes are ignored in the existing density measurement methods. However, this method is only suitable for low-speed fluid flow scenarios. If it is used for high-speed flow fluids, the effect of flow velocity on density is ignored, resulting in large measurement errors and low measurement accuracy.

In view of this, how to simultaneously measure the multi-state parameters of the fluid through a set of devices/methods is an urgent problem to be solved at present.

SUMMARY OF THE INVENTION

In view of the above problems, the present specification is proposed to provide a method and apparatus for simultaneous measurement of multi-state parameters of fluids, electronic equipment and computer readable storage medium that overcome the above problems or at least partially solve the above problems.

Other features and advantages of the present disclosure will become apparent from the following detailed description, or be learned in part by practice of the present disclosure.

In a first aspect, the present invention discloses a multi-state parameter synchronous measurement method of fluid, comprising:

Obtain the actual forward propagation phase φ _d and the actual counter current propagation phase φ _u of the continuous acoustic wave in the liquid fluid in the flowing state;

According to the acquired actual downstream propagation phase φ _d , the actual upstream propagation phase φ _u and the pre-built mathematical model of each state parameter, a plurality of the state parameters are synchronously determined; wherein, each of the state parameters The mathematical models of the parameters are all constructed in advance based on the forward propagation phase φ _d and the countercurrent propagation phase φ _u of the continuous acoustic wave at the real flow velocity of the liquid fluid.

In an exemplary embodiment of the present disclosure, a plurality of said state parameters include liquid density, volume flow, and mass flow, wherein,

The first mathematical model of the liquid density with respect to the forward propagation phase and the countercurrent propagation phase is:

The second mathematical model of the volume flow with respect to the forward propagation phase and the countercurrent propagation phase is:

The third mathematical model of the mass flow with respect to the forward propagation phase and the countercurrent propagation phase is:

Wherein, E is the elastic modulus of the liquid fluid, L ₀ is the propagation length of the continuous sound wave in the liquid fluid, f is the frequency of the continuous sound wave, and R is the radius of the channel where the liquid fluid is located.

In an exemplary embodiment of the present disclosure, the step of constructing the first mathematical model specifically includes:

的第四数学模型；Construct the elastic modulus E of the liquid density with respect to the true flow rate of the liquid fluid and the hydrostatic propagation velocity of the continuous sound wave

The fourth mathematical model of ;

Based on the co-current propagation phase and the counter-current propagation phase of the continuous acoustic wave under the true flow velocity of the liquid fluid, construct a fifth mathematical model of the hydrostatic propagation velocity with respect to the co-current propagation phase and the counter-current propagation phase;

The first mathematical model is obtained by combining the fifth mathematical model and the fourth mathematical model.

In an exemplary embodiment of the present disclosure, the fifth mathematical model is:

In an exemplary embodiment of the present disclosure, the step of constructing the second mathematical model specifically includes:

constructing a sixth mathematical model of the volume flow with respect to the real flow rate of the liquid fluid;

Based on the forward propagation phase and the countercurrent propagation phase of the continuous acoustic wave under the true flow rate of the liquid fluid, construct a seventh mathematical model of the true flow rate of the liquid fluid with respect to the forward propagation phase and the countercurrent propagation phase;

Combining the seventh mathematical model and the sixth mathematical model, the second mathematical model is obtained.

所述第七数学模型为：

In an exemplary embodiment of the present disclosure, the sixth mathematical model is:

The seventh mathematical model is:

In an exemplary embodiment of the present disclosure, the step of constructing the third mathematical model specifically includes:

constructing an eighth mathematical model of the mass flow with respect to the liquid density and the volume flow;

The third mathematical model is obtained by combining the first mathematical model, the second mathematical model and the eighth mathematical model.

In an exemplary embodiment of the present disclosure, the eighth mathematical model is .

In an exemplary embodiment of the present disclosure, the step of obtaining the actual forward propagation phase and the actual upstream propagation phase specifically includes:

The actual forward propagation phase and the actual countercurrent propagation phase of the continuous sound wave in the liquid fluid are obtained by using the continuous wave measurement method of multiple sidetones; or,

Adopt the ultrasonic measurement method of sidetone phasing to obtain the actual forward propagation phase and the actual countercurrent propagation phase of the continuous sound wave in the liquid fluid; or,

First, the continuous wave measurement method is used to obtain the forward propagation phase and the countercurrent propagation phase of the continuous acoustic wave in the liquid fluid, and then the multi-period pulse train is used as the excitation wave to obtain the forward propagation fuzzy number and the countercurrent propagation fuzzy number, The actual downstream propagation phase and the countercurrent propagation phase are respectively calculated in combination with the acquired downstream propagation phase, countercurrent propagation phase and corresponding fuzzy numbers.

In an exemplary embodiment of the present disclosure, the method further includes: when acquiring the actual forward propagation phase and the actual countercurrent propagation phase of the continuous sound wave, synchronously obtaining the actual propagation amplitude of the continuous sound wave, and based on the obtained The actual propagation amplitude, the actual forward propagation phase, and the actual countercurrent propagation phase are used to simultaneously determine the gas content in the liquid fluid.

In a second aspect, the present invention provides a fluid multi-state parameter synchronous measurement device, comprising:

Mathematical model building module, which is used to respectively construct in advance a mathematical model of each of the state parameters with respect to the forward propagation phase φ _d and the countercurrent propagation phase φ _u of the continuous acoustic wave under the real flow velocity of the liquid fluid;

The data acquisition module is used to acquire the actual forward propagation phase φ _d and the actual countercurrent propagation phase φ _u of the continuous acoustic wave in the liquid fluid under the flowing state;

The data processing module is configured to synchronously _{determine multiple} state parameters.

In an exemplary embodiment of the present disclosure, a plurality of the state parameters include liquid density, volume flow rate and mass flow rate, and accordingly, the mathematical model building module includes: a first mathematical model building unit for building all the a first mathematical model of the liquid density with respect to the forward propagation phase and the countercurrent propagation phase;

A second mathematical model building unit for building a second mathematical model of the volume flow with respect to the forward propagation phase and the countercurrent propagation phase;

A third mathematical model constructing unit is configured to construct a third mathematical model of the mass flow with respect to the forward propagation phase and the countercurrent propagation phase.

In an exemplary embodiment of the present disclosure, the first mathematical model building unit specifically includes:

The fourth mathematical model construction subunit is used for constructing the elastic modulus of the liquid density with respect to the actual flow velocity of the liquid fluid and the continuous sound wave in the liquid fluid based on the principle that sound waves propagate in the form of longitudinal waves in the liquid fluid. The fourth mathematical model of the hydrostatic propagation velocity under the true velocity of the liquid fluid;

a fifth mathematical model construction subunit for constructing the hydrostatic propagation velocity with respect to the forward propagation phase and the countercurrent based on the forward propagation phase and the countercurrent propagation phase of the continuous sound wave at the actual flow velocity of the liquid fluid the fifth mathematical model of the propagation phase;

The first mathematical model construction subunit is configured to combine the fourth mathematical model and the fifth mathematical model to obtain the first mathematical model.

In an exemplary embodiment of the present disclosure, the second mathematical model building unit specifically includes:

The sixth mathematical model construction subunit is used for constructing the sixth mathematical model of the volume flow with respect to the real flow velocity of the liquid fluid;

The seventh mathematical model construction subunit is used for constructing the real flow velocity of the liquid fluid with respect to the forward propagation phase and the The seventh mathematical model of countercurrent propagation phase;

The second mathematical model construction subunit is configured to combine the seventh mathematical model and the sixth mathematical model to obtain the second mathematical model.

In an exemplary embodiment of the present disclosure, the third mathematical model building unit specifically includes:

an eighth mathematical model construction subunit for constructing an eighth mathematical model of the mass flow with respect to the density of the liquid fluid and the volume flow;

A third mathematical model construction subunit, configured to combine the first mathematical model constructed by the first mathematical model construction unit, the second mathematical model constructed by the second mathematical model construction unit, and the eighth mathematical model model to obtain the third mathematical model.

In an exemplary embodiment of the present disclosure, the data acquisition module is further configured to acquire the actual propagation amplitude of the continuous sound wave synchronously when acquiring the actual downstream propagation phase and the actual upstream propagation phase; correspondingly Preferably, the data processing module is further configured to determine, when determining a plurality of the state parameters, the actual propagation amplitude, the actual forward propagation phase, and the actual countercurrent propagation phase, to synchronously determine the gas content.

In a third aspect, the present invention provides an electronic device, including a processor and a memory: the memory is used to store a program of any one of the above methods; the processor is configured to execute the program stored in the memory The program implements the steps of any of the methods described above.

In a fourth aspect, the embodiments of the present specification provide a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, controls the device where the storage medium is located to execute the steps of any one of the methods described above.

Beneficial effects of the present invention:

The multi-state parameter synchronous measurement method of liquid fluid provided by the present invention comprehensively considers the flow state of the liquid fluid existing in the pipeline, and adopts the method of continuous acoustic wave. The mathematical model of the forward propagation phase and the countercurrent propagation phase under the following conditions can be used to construct the direct relationship between each state parameter and the forward propagation phase and the countercurrent propagation phase, and then the actual parallel flow of the continuous acoustic wave in the liquid fluid in the flowing state can be obtained. The flow propagation phase and the actual countercurrent propagation phase, and combined with the constructed mathematical models to determine the various state parameters synchronously, that is, regardless of whether the fluid is flowing at a low speed or a high speed flow, it can be obtained by obtaining the current actual forward and countercurrent propagation phase of the liquid fluid. Simultaneously determine multiple state parameters of the fluid, such as liquid density, volume flow rate and mass flow rate, so as to realize the simultaneous measurement of multiple state parameters through a set of devices and/or a method, and because there is no restriction on the flow rate of the fluid, That is, the influence of flow velocity on fluid density is not ignored, which makes the measurement result more accurate and applicable to a wider range of scenarios.

It is to be understood that the foregoing general description and the following detailed description are exemplary only and do not limit the present disclosure.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. In the drawings, each element or part is not necessarily drawn to actual scale. Obviously, the accompanying drawings in the following description are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor:

Fig. 1a is the schematic diagram of the existing π-type flow measuring device;

Fig. 1b is a schematic diagram of a clip-on flow measurement device installed on the same side of an existing acoustic wave transducer;

Fig. 1c is the schematic diagram of the external clamp-type flow measuring device installed on different sides of the existing acoustic wave transducer;

Fig. 2 is the flow chart of the multi-state parameter synchronous measurement method of liquid of an exemplary embodiment of the present invention;

Fig. 3 is the block diagram of the multi-state parameter synchronous measurement device of liquid of an exemplary embodiment of the present invention;

4 is a block diagram of an electronic device of an exemplary embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The example embodiments described below can be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments. conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and their repeated descriptions will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be employed. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the present disclosure.

The block diagrams shown in the figures are merely functional entities and do not necessarily necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices entity. Meanwhile, suffixes such as 'module', 'component' or 'unit' used herein to represent elements are only for facilitating the description of the present invention, and have no specific meaning per se. Thus, "module", "component" or "unit" may be used interchangeably.

The flowcharts shown in the figures are only exemplary illustrations and do not necessarily include all contents and operations/steps, nor do they have to be performed in the order described. For example, some operations/steps can be decomposed, and some operations/steps can be combined or partially combined, so the actual execution order may change according to the actual situation.

It will be understood that although the terms first, second, third, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Accordingly, a first component discussed below could be termed a second component without departing from the teachings of the disclosed concepts.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, which is merely an association relationship describing the associated objects, indicating that three relationships can exist, For example, A and/or B can mean that A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Those skilled in the art can understand that the accompanying drawings are only schematic diagrams of exemplary embodiments, and the modules or processes in the accompanying drawings are not necessarily necessary to implement the present disclosure, and therefore cannot be used to limit the protection scope of the present disclosure.

Definition of noun:

Volume Flowrate: In this paper, volume flow rate refers to the volume of fluid or gas passing through the flow section in unit time, expressed as Qv. In some embodiments, this volume flow is also referred to as the instantaneous volume flow.

Mass flow: In this context, mass flow refers to the mass of fluid passing through the effective section of a closed pipe or open tank per unit time. This mass flow corresponds to the above-mentioned volume flow and can be expressed as the product of the volume flow and the fluid density.

Co-current propagation phase: In this paper, co-current propagation phase refers to the phase delay caused by a continuous acoustic wave propagating in a downstream direction in a fluid in a flowing state.

Countercurrent Propagation Phase: In this paper, countercurrent propagation phase refers to the phase delay caused by the propagation of a continuous acoustic wave in the countercurrent direction in a fluid in a flowing state.

Downstream Propagation Time: In this paper, downstream propagation time refers to the time it takes for a continuous sound wave to propagate in a downstream direction in a fluid in a flowing state.

Countercurrent Propagation Time: In this context, countercurrent propagation time refers to the time it takes for a continuous sound wave to propagate in the countercurrent direction in a fluid in a flowing state.

Hydrostatic Propagation Velocity: In this paper, hydrostatic propagation velocity refers to the propagation velocity of a continuous sound wave in a liquid fluid at rest.

Continuous wave: In this article, continuous wave refers to a single frequency sine or cosine wave. For example, s(t)=Acos(2π*f ₁ *t), modulate the continuous wave with frequency f ₁ as a baseband signal on the carrier and transmit it. After being forwarded by the target, it is received and demodulated. The received side tone signal Relative to the transmitted signal, the phase is delayed by Δφ, that is, there is a phase difference Δφ.

Real flow rate: In this article, real flow rate refers to the actual flow rate of the fluid, without any assumptions about the flow rate. In this paper, no matter whether the real flow velocity of the liquid fluid is low velocity (that is, Mach is less than 0.3) or high velocity, in constructing the mathematical model of each state parameter, there is no approximate convention because the real velocity of the fluid is less than the sound wave propagation velocity, that is, no approximation is made. The actual effect of fluid velocity on fluid density is ignored.

parameter:

φ _d downstream propagation phase.

φ _u countercurrent propagation phase.

t _d downstream travel time.

t _u Countercurrent propagation time.

液体流体密度。

Liquid fluid density.

E Elastic modulus of liquid fluids.

L ₀ The propagation length of a continuous sound wave in a liquid fluid in a flowing state.

f Frequency of continuous sound waves.

R The radius of the channel through which the liquid fluid flows.

声波在静水中的传播速度。

The speed of sound waves in still water.

液体流体流速。

Liquid fluid flow rate.

L The propagation length of continuous sound waves in a π-type flow measuring device.

In the first aspect of the present invention, a method for synchronously measuring multi-state parameters of liquid is provided, so as to solve the problem that in the prior art, since the influence of the fluid flow rate on the density is ignored in the prior art, the prior art measuring method is applied to the liquid fluid with high speed flow. The accuracy of flow measurement is low, and the simultaneous measurement of multi-state parameters cannot be performed by a set of equipment/methods. Referring to Fig. 2, the multi-state parameter synchronous measurement method of the fluid of the present invention includes:

S201, a mathematical model of each state parameter of the liquid fluid with respect to the forward-current propagation phase and the counter-current propagation phase of the continuous acoustic wave under the real flow velocity of the liquid fluid is separately constructed in advance.

In one or more specific embodiments, the multi-state parameters of the liquid fluid specifically include liquid density, volume flow rate and mass flow rate, so that the liquid density is related to the forward propagation phase and the countercurrent propagation phase of the continuous acoustic wave at the true flow rate of the liquid fluid The mathematical model of the first mathematical model is the first mathematical model; the mathematical model of the volume flow with respect to the forward propagation phase and the countercurrent propagation phase of the continuous sound wave at the real flow velocity of the liquid fluid is the second mathematical model; The mathematical model of the forward propagation phase and the countercurrent propagation phase at the flow velocity is the third mathematical model.

关于液体流体真实流速下的弹性模 量E和该连续声波在该液体流体真实流速下的静水传播速度

的第 四数学模型；然后，基于连续声波在该液体流体真实流速下的顺流传 播相位φ_d和逆流传播相位φ_u，构建该静水传播速度

关于该顺流传播 相位φ_d和该逆流传播相位φ_u的第五数学模型；最后，结合上述第四数 学模型和第五数学模型，得到该第一数学模型。In one or more specific embodiments, the step of constructing the above-mentioned first mathematical model specifically includes: first, constructing the density of the liquid

Regarding the elastic modulus E at the real flow rate of the liquid fluid and the hydrostatic propagation velocity of the continuous sound wave at the real flow rate of the liquid fluid

The fourth _{mathematical model} of

The fifth mathematical model for the forward propagation phase φ _d and the countercurrent propagation phase φ _u ; finally, the first mathematical model is obtained by combining the above-mentioned fourth mathematical model and fifth mathematical model.

可以表示为：

由此可得第四数学模型为：In one or more specific embodiments, since the liquid fluid has only the bulk elastic modulus E, and the sound wave can only propagate in the form of longitudinal waves in the liquid fluid, its hydrostatic propagation velocity

It can be expressed as:

From this, the fourth mathematical model can be obtained as:

是未知 的，因此，为了得到该液体密度，需要求该连续声波在该液体流体中 的静水传播速度

Among them, the elastic modulus E of the liquid fluid can be measured, and the hydrostatic propagation velocity

is unknown, therefore, in order to obtain the liquid density, the hydrostatic propagation velocity of the continuous sound wave in the liquid fluid needs to be calculated

可根据该连续声波在静止状态下的液体 流体中的传播长度L₀和传播时间t₀得到，即

然而，其中，传 播时间的测量需要非常精准，且测量难度高，而连续声波的顺、逆流 传播相位的测量相对简单，且精度高，因此，为了避免直接测量传播 时间，将其转换为相位测量，从而构建该静水传播速度关于相位的第 五数学模型，进而确定第一数学模型。Generally, the speed of propagation in still water

It can be obtained according to the propagation length L ₀ and propagation time t ₀ of the continuous sound wave in the liquid fluid at rest, namely

However, among them, the measurement of propagation time needs to be very accurate and difficult to measure, while the measurement of the forward and reverse propagation phases of continuous acoustic waves is relatively simple and has high precision. Therefore, in order to avoid direct measurement of propagation time, it is converted into phase measurement , so as to construct the fifth mathematical model of the hydrostatic propagation velocity with respect to the phase, and then determine the first mathematical model.

相应地，该连续声波的顺流传播相位φ_d和逆流传播相位φ_u分 别为：In one or more specific embodiments, when a continuous sound wave is used as the excitation sound wave, the forward flow propagation time t _d and the counter flow propagation time t _u of the continuous sound wave are respectively:

Correspondingly, the co-current propagation phase φ _d and the counter-current propagation phase φ _u of the continuous acoustic wave are respectively:

From the above formula (2), we can get:

From the above formula (3), we can get:

关于顺流传播相位和逆流传播相位关系式，即 第五数学模型为：The above equation (4) and equation (5) are simultaneously summed to obtain the hydrostatic propagation velocity under the real flow velocity of the liquid fluid

Regarding the relationship between the forward propagation phase and the countercurrent propagation phase, that is, the fifth mathematical model is:

Then, the fifth mathematical model, that is, formula (6), is substituted into the above-mentioned fourth mathematical model, that is, formula (1) to obtain the first mathematical model of the liquid density with respect to the forward propagation phase and the countercurrent propagation phase:

In one or more specific embodiments, the step of constructing the above-mentioned second mathematical model specifically includes: first, constructing a sixth mathematical model of the volume flow with respect to the real flow velocity of the liquid fluid; The flow propagation phase and the countercurrent propagation phase are used to construct the seventh mathematical model of the real flow velocity of the liquid fluid with respect to the downstream propagation phase and the countercurrent propagation phase; finally, the second mathematical model is obtained by combining the seventh mathematical model and the sixth mathematical model.

的第六数学模型为：

In one or more embodiments, the volumetric flow rate of the liquid fluid is related to the true flow rate of the liquid fluid

The sixth mathematical model of is:

因此，可构建该液体流体真实流速

关 于连续声波在液体流体真实流速下的顺流传播相位和逆流传播相位 的第七数学模型，具体地，将上述公式(4)和公式(5)联立求差可得到该液体流体真实流速

关于顺流传播相位和逆流传播相位的第 七数学模型为：From the sixth mathematical model, that is, formula (8), it can be known that if the volume flow is required, it is necessary to obtain the real flow rate of the liquid fluid.

Therefore, the true flow rate of the liquid fluid can be constructed

Regarding the seventh mathematical model of the forward propagation phase and the countercurrent propagation phase of the continuous sound wave under the real flow velocity of the liquid fluid, specifically, the real flow velocity of the liquid fluid can be obtained by taking the difference of the above formula (4) and formula (5) simultaneously

The seventh mathematical model for the forward propagation phase and the countercurrent propagation phase is:

In one or more specific embodiments, the above-mentioned seventh mathematical model, that is, formula (9), is substituted into the above-mentioned sixth mathematical model, that is, formula (8), to obtain the second mathematical model of the volume flow with respect to the forward-current propagation phase and the counter-current propagation phase The model is:

In one or more specific embodiments, the step of constructing the above-mentioned third mathematical model specifically includes: firstly, constructing an eighth mathematical model of the mass flow of the liquid fluid with respect to the liquid density and volume flow; secondly, based on the continuous sound wave in the The forward propagation phase and the countercurrent propagation phase of the liquid fluid at the real flow velocity, respectively construct the first mathematical model of the liquid density with respect to the forward flow propagation phase and the countercurrent propagation phase, and construct the volume flow with respect to the continuous sound wave at the real flow velocity of the liquid fluid. The second mathematical model of the forward propagation phase and the countercurrent propagation phase; finally, the third mathematical model is obtained by combining the first mathematical model, the second mathematical model and the eighth mathematical model.

In one or more specific embodiments, the eighth mathematical model of the mass flow with respect to liquid density and volume flow is:

It can be seen from the formula (11) that, if the mass flow rate is required, the liquid density and volume flow rate need to be calculated separately. Wherein, the liquid density can be obtained by constructing a mathematical model of the liquid density with respect to the forward propagation phase and the countercurrent propagation phase. Specifically, the method for constructing the mathematical model is the same as the above-mentioned principle for constructing the first mathematical model, which is not repeated here. Repeat. Similarly, the method for obtaining the volume flow can also be constructed by constructing a mathematical model of the volume flow with respect to the forward-current propagation phase and the counter-current propagation phase. Repeat.

In one or more specific embodiments, the above-mentioned first mathematical model (ie formula (7)) and second mathematical model (ie formula (10)) are substituted into the eighth mathematical model (ie formula (11)) to obtain the mass flow rate The third mathematical model for the co-current propagation phase and the counter-current propagation phase is:

S203, acquiring the actual downstream propagation phase and the actual countercurrent propagation phase of the continuous sound wave in the liquid fluid in the flowing state.

In one or more specific embodiments, the multi-sidetone method can be used to obtain the actual forward propagation phase and the actual countercurrent propagation phase of the continuous sound wave in the liquid fluid in the flowing state.

In one or more specific embodiments, the ultrasonic flow measurement method based on side-tone phasing can also be used to obtain the actual forward propagation phase and the actual countercurrent propagation phase of the continuous acoustic wave in the liquid fluid in the flowing state.

In one or more specific embodiments, the forward phase difference Φ _{frac_d} and the countercurrent phase difference Φ _{frac_u} of the continuous wave (or continuous acoustic wave) under the real flow velocity of the liquid fluid are obtained first, and then the difference between the continuous wave (or continuous acoustic wave) and the ) multi-period pulse wave (or pulse train) of the same frequency as the excitation sound wave, obtain the fuzzy number of the downstream propagation and the fuzzy number of the upstream propagation respectively, and then combine the corresponding fuzzy numbers according to the upstream phase difference and the upstream phase difference respectively. The actual downstream propagation phase and the actual countercurrent propagation phase are obtained by calculation.

In one or more specific embodiments, when a pulse train with the same frequency f as the continuous acoustic wave is used as the excitation acoustic wave to perform downstream measurement and countercurrent measurement, it is sufficient to transmit 10-20 cycles at the transmitting end at the transmitting end, or The number of cycles can be adjusted according to actual needs, but should be kept within 50 cycles. Usually, the maximum number of cycles N _max needs to satisfy:

In one or more specific implementation manners, after receiving the delayed delayed signal (transmitted by the transmitting end) at the receiving end, a delay estimation algorithm is used to obtain the downstream propagation delay estimates (that is, the downstream propagation delays). Flow propagation time t _d ) and the delay estimation of countercurrent propagation (ie countercurrent propagation time t _u ); then, according to the delay estimation, the fuzzy numbers Int _d =[t _d ·f] _0.5 and countercurrent propagation in downstream propagation are calculated respectively The fuzzy number Int _u =[t _u ·f] _0.5 in the propagation, and according to the obtained downstream phase difference and upstream phase difference, the actual downstream propagation phase Φ _d (f) can be obtained by combining the corresponding fuzzy numbers for calculation. =Int _d ×360+Φ _{frac_d} and countercurrent propagation phase Φ _u (f)=Int _u ×360+Φ _{frac_u} .

S205, according to the actual downstream propagation phase and the actual upstream propagation phase obtained in step S203, and the mathematical model constructed in the above step S201, synchronously determine a plurality of state parameters.

In one or more specific embodiments, the actual downstream propagation phase and the actual upstream propagation phase obtained in the above step S203 are synchronously substituted into the first mathematical model, the second mathematical model and the third mathematical model constructed above, namely, The value of the downstream propagation phase in the first, second and third mathematical models is the obtained actual downstream propagation phase, and the value of the upstream propagation phase in the first, second and third mathematical models is the obtained actual upstream propagation phase phase, and then synchronously calculate the first, second and third mathematical models to obtain the liquid density, volume flow and mass flow.

In the present invention, the mathematical models of the forward propagation phase and the countercurrent propagation phase of the continuous acoustic wave under the real flow velocity of the liquid fluid are constructed in advance, so as to construct the relationship between the respective state parameters and the forward propagation phase and the countercurrent propagation phase. Then, by directly obtaining the actual downstream propagation phase and the actual countercurrent propagation phase of the continuous sound wave in the liquid fluid, and synchronously substituting them into the established mathematical models to synchronously determine each state parameter, so as to achieve a set of devices based on Multiple state parameters are measured synchronously, and since there is no restriction on the fluid flow rate, the method can be adapted to low-speed and high-speed scenarios, and the measurement accuracy is high.

In one or more embodiments, the method for synchronously measuring multi-state parameters disclosed in the present invention further includes: when acquiring the actual forward propagation phase and the actual countercurrent propagation phase of the continuous sound wave, synchronously obtain the actual propagation amplitude of the continuous sound wave, and then obtain the actual propagation amplitude of the continuous sound wave. Based on the actual propagation amplitude, the actual forward propagation phase, and the actual countercurrent propagation phase, the gas holdup in the liquid fluid is synchronously determined.

In one or more specific implementations, the amplitude variance is calculated according to the synchronously acquired actual propagation amplitude, and if the acquired actual propagation amplitude and amplitude variance change strongly, it is determined that the liquid fluid contains bubbles, and according to the pre-stored data in the database Acoustic amplitude value and gas content mapping table to obtain the measured gas content in the liquid fluid.

Example 1

Referring to Fig. 1a, the multi-state parameter synchronous measurement method of the fluid of the present invention is described by taking the acoustic wave as the excitation acoustic wave and the π-type flow measuring device as an example.

The synchronous measurement method of this embodiment includes the above-mentioned steps S201-S205, namely, firstly constructing a plurality of state parameters of the liquid fluid, such as liquid density, volume flow rate and mass flow rate, respectively, regarding the downstream flow of the continuous acoustic wave at the real flow rate of the liquid fluid The first, second and third mathematical models of the propagation phase and the countercurrent propagation phase, then, obtain the actual downstream propagation phase and the actual countercurrent propagation phase of the continuous sound wave in the liquid fluid, and compare the obtained actual downstream propagation phase and actual countercurrent propagation phase. Multiple state parameters of the liquid, namely liquid density, volume flow and mass flow, can be obtained simultaneously by substituting the propagation phase into the first, second and third mathematical models constructed.

则相应地，该连续声波的顺流传播相位 φ_d和逆流传播相位φ_u分别为：In this embodiment, it can be seen from Fig. 1a that the propagation length of the continuous acoustic wave in the π-type flow measuring device is L ₀ =L, and correspondingly, the forward flow propagation time t _d and the counter flow propagation time t _u are respectively:

Correspondingly, the co-current propagation phase φ _d and the counter-current propagation phase φ _u of the continuous acoustic wave are respectively:

由上述公式 (14)可得到：

然后，将公式(15)和公式(16) 联立求和得到在该π型流量测量装置中，该连续声波在液体流体真实 流速下的静水传播速度

的第五数学模型为：From the above formula (13), we can get:

From the above formula (14), we can get:

Then, formula (15) and formula (16) are simultaneously summed to obtain the hydrostatic propagation velocity of the continuous acoustic wave at the real flow velocity of the liquid fluid in the π-type flow measurement device

The fifth mathematical model of is:

Substitute this formula (17) into the above-mentioned first mathematical model, namely formula (1), to obtain the forward propagation phase φ _d and the countercurrent propagation phase of the liquid density in the π-type flow measuring device with respect to the continuous sound wave at the real flow velocity of the liquid fluid. The first mathematical model of φ _u :

关于上述顺流传播相位和逆流传播相位的第七数 学模型为：In this embodiment, the real flow rate of the liquid fluid can be obtained by simultaneously calculating the difference between the above formulas (15) and (16).

The seventh mathematical model for the above-mentioned forward propagation phase and countercurrent propagation phase is:

In this embodiment, the seventh mathematical model is substituted into the above-mentioned sixth mathematical model, that is, formula (19) is substituted into formula (8) to obtain the second mathematical model of the volume flow in the π-type flow measuring device with respect to the forward propagation phase and the countercurrent propagation phase The model is:

In this embodiment, the above-mentioned first mathematical model and second mathematical model are substituted into the eighth mathematical model, that is, formula (18) and formula (20) are substituted into formula (11) to obtain the mass flow rate in the π-type flow measuring device with respect to the continuous sound wave The third mathematical model of the forward propagation phase and the countercurrent propagation phase under the real flow velocity of the liquid fluid is:

Then, the actual downstream propagation phase and the actual countercurrent propagation phase of the continuous acoustic wave in the liquid fluid in the flowing state are obtained; finally, the obtained actual downstream propagation phase and the actual countercurrent propagation phase are synchronously substituted into the above formulas (18), ( In 20) and (21), the liquid density, volume flow and mass flow in the π-type flow measuring device are obtained through simultaneous calculation.

以及

连续声波中相位延时的范围为∈(-180°,180°)。当采用连续 波测量方法获取到顺流相位差φ_{frac_d}＝162.1192和逆流相位差 φ_{frac_u}＝82.1477；然后，以频率f为1MHz的脉冲波为激励波，令发射端 发射20个周期，并根据发射端和接收端的信号，利用延时估计法计 算得到顺流传播的延时估计值，即顺流传播时间为t_d＝1.3246×10^-4s， 逆流传播的延时估计值，即逆流传播时间为t_u＝1.3424×10^-4s，并分别 根据该顺流传播时间和逆流传播时间求取顺流传播中的模糊数和逆 流传播中的模糊数为:In this embodiment, let the propagation length L=0.2m,

as well as

The range of phase delay in continuous acoustic waves is ∈(-180°, 180°). When the continuous wave measurement method is used to obtain the downstream phase difference φ _{frac_d} = 162.1192 and the upstream phase difference φ _{frac_u} = 82.1477; The signal of the terminal and the receiving terminal is calculated by the delay estimation method to obtain the estimated value of the downstream propagation delay, that is, the downstream propagation time is t _d = 1.3246×10 ^-4 s, and the estimated value of the upstream propagation delay is the upstream propagation time. is t _u =1.3424×10 ^-4 s, and according to the forward propagation time and the countercurrent propagation time respectively, the fuzzy number in the forward propagation and the fuzzy number in the countercurrent propagation are obtained as:

Fuzzy number in downstream propagation: Int=[t·f] _0.5 =[1.3246×10 ⁴ ×1×10 ⁶ ]=132;

Fuzzy number in countercurrent propagation: Int _u =[t _u ·f] _0.5 =[1.3424×10 ⁴ ×1×10 ⁶ ]=134.

Then, through the phase with fuzzy number measured by continuous wave, the actual downstream propagation phase is obtained as: φ _d (1MHz)=Int _d ×360+φ _{frac_d} =47682.1192; the actual upstream propagation phase is: Φ _u (1MHz)= Int _u ×360+Φ _{frac_u} =48322.1477.

Compared with the use of multiple frequency sound waves in the sidetone phasing method, this embodiment only uses one frequency sound wave. In the pulse wave, the embodiment of the present invention uses multi-period excitation, so that the signal at the receiving end presents a continuous wave situation, avoiding the problem of inconsistent probe frequencies in the traditional pulse wave measurement. The embodiment of the present invention utilizes the multi-period pulse wave system to obtain the fuzzy number quickly, thereby ensuring the measurement range. At the same time, the continuous wave method is used to obtain high-precision measurements.

Finally, the actual downstream propagation phase and the actual countercurrent propagation phase are synchronously substituted into the above formulas (18), (20) and (21), and the liquid density, volume flow and mass flow in the π-type flow measuring device are obtained by synchronous calculation. .

Embodiment 2

Referring to Fig. 1b, the method for synchronously measuring multi-state parameters of fluid of the present invention is described by taking continuous acoustic wave as the excitation acoustic wave, and taking the clip-on flow measuring device installed on the same side of the acoustic wave transducer as an example.

The method for synchronously measuring multi-state parameters of fluid in this embodiment includes the above steps S201-S205. The difference is that in the synchronous measurement method in this embodiment, since the external clamp-type flow measurement device installed on the same side of the acoustic wave transducer The different installation positions of the acoustic wave transducer and the acoustic wave transducer in the π-type flow measurement device lead to different propagation lengths, forward propagation phases and countercurrent propagation phases of continuous acoustic waves under the true flow velocity of the liquid fluid. , the first, second and third mathematical models constructed are different.

则相 应地，该连续声波的顺流传播相位φ_d和逆流传播相位φ_u分别为：In this embodiment, it can be seen from Fig. 1b that the propagation length L ₀ =4R/cosθ ₃ of the continuous acoustic wave in the clip-on flow measuring device installed on the same side of the acoustic wave transducer, while the forward propagation time t _d and the countercurrent propagation The time t _u are respectively:

Correspondingly, the forward propagation phase φ _d and the countercurrent propagation phase φ _u of the continuous acoustic wave are respectively:

由上述公式(23)可得到：

将上述 公式(24)和公式(25)联立求和得到该声波换能器同侧安装型外夹 式流量测量装置中连续声波在液体流体真实流速下的静水传播速度

关于顺流传播相位和逆流传播相位关系式，即第五数学模型为：

From the above formula (22), it can be obtained:

From the above formula (23), we can get:

Simultaneously sum the above formula (24) and formula (25) to obtain the hydrostatic propagation velocity of the continuous acoustic wave in the real flow velocity of the liquid fluid in the same-side mounted external clip-on flow measurement device of the acoustic wave transducer

Regarding the relationship between the forward propagation phase and the countercurrent propagation phase, that is, the fifth mathematical model is:

Then this fifth mathematical model, i.e. formula (26) is substituted into the above-mentioned fourth mathematical model, i.e. formula (1) obtains the first mathematical model of the liquid density in the same side installation type external clamp type flow measuring device of the acoustic wave transducer as:

关于连续声波在液体流体真实流速下的顺流传播相位和逆流传播相 位的第七数学模型为：In this embodiment, the difference between the above formula (24) and formula (25) is calculated to obtain the real flow rate of the fluid in the same-side-mounted external clamp-type flow measurement device of the acoustic wave transducer

The seventh mathematical model for the co-current propagation phase and counter-current propagation phase of the continuous sound wave at the real flow velocity of the liquid fluid is:

然后，将该 公式(28)代入上述公式(8)，得到声波换能器同侧安装型外夹式 流量测量装置中体积流量关于连续声波在液体流体真实流速下的顺 流传播相位和逆流传播相位的第二数学模型为：

Then, substitute this formula (28) into the above formula (8) to obtain the forward propagation phase and countercurrent propagation of the volume flow in the same-side-mounted external clip-on flow measurement device of the acoustic wave transducer with respect to the continuous sound wave at the true flow velocity of the liquid fluid The second mathematical model of the phase is:

In this embodiment, the above-mentioned first mathematical model and second mathematical model are substituted into the eighth mathematical model, that is, formula (27) and formula (29) are substituted into formula (11) to obtain the mass flow rate in the π-type flow measuring device with respect to the continuous sound wave The third mathematical model of the forward propagation phase and the countercurrent propagation phase under the real flow velocity of the liquid fluid is:

Then, the actual downstream propagation phase and the actual countercurrent propagation phase of the continuous acoustic wave in the liquid fluid in the flowing state are obtained; finally, the obtained actual downstream propagation phase and actual countercurrent propagation phase are synchronously substituted into the above formulas (27), ( In 29) and (30), the liquid density, volume flow and mass flow in the clamp-on flow measuring device installed on the same side of the acoustic wave transducer are obtained by synchronous calculation.

Embodiment 3

Referring to Fig. 1c, the method for synchronizing multi-state parameters of fluid of the present invention is described by taking continuous sound waves as excitation sound waves and an external clamp-type flow measuring device installed on opposite sides of the sound wave transducer as an example.

The method for synchronously measuring multi-state parameters in this embodiment includes steps S201-S205 in the above-mentioned first embodiment. The difference is that in the synchronous measurement method in this embodiment, since the external clamp-type flow rate is installed on the opposite side of the acoustic wave transducer The different installation positions of the acoustic wave transducer in the measuring device and the acoustic wave transducer in the π-type flow measuring device result in different propagation lengths, forward propagation phases and countercurrent propagation phases of continuous acoustic waves at the true flow velocity of the liquid fluid. , correspondingly, the first, second, and third mathematical models constructed are different.

则 相应地，该连续声波在该液体流体真实流速下的顺流传播相位φ_d和逆 流传播相位φ_u分别为：In this embodiment, as can be seen from Fig. 1c, the propagation length of the continuous sound wave in the external clamp-type flow measuring device of the sound wave transducer installed on the opposite side is L ₀ =2R/cosθ ₃ , while the forward flow propagation time t _d and the reverse flow The propagation times t _u are respectively:

Correspondingly, the forward propagation phase φ _d and the countercurrent propagation phase φ _u of the continuous acoustic wave at the real flow velocity of the liquid fluid are respectively:

由上述公式(32)可得到：

将上述公 式(33)和(34)联立求和得到该声波换能器异侧安装型外夹式流量 测量装置中，连续声波在液体流体真实流速下的静水传播速度

关于 连续声波在液体流体真实流速下的顺流传播相位和逆流传播相位关 系式，即第五数学模型为：From the above formula (31), we can get:

From the above formula (32), we can get:

The above equations (33) and (34) are summed together to obtain the hydrostatic propagation velocity of the continuous acoustic wave under the true flow rate of the liquid fluid in the acoustic wave transducer installed on the opposite side of the external clamp-type flow measurement device.

Regarding the relationship between the co-current propagation phase and the counter-current propagation phase of the continuous sound wave at the real flow velocity of the liquid fluid, that is, the fifth mathematical model is:

Then the fifth mathematical model, that is, the formula (35), is substituted into the fourth mathematical model, that is, the first mathematical model of the liquid density in the outer-clamp-type flow measuring device of the different side of the acoustic wave transducer obtained in the formula (1) is: :

关于连续声波在液体流体真实流速下的顺流传播相位和逆流传播 相位的第七数学模型为：In this embodiment, the above equations (33) and (34) are calculated simultaneously to obtain the true flow rate of the liquid fluid in the sound wave transducer installed on the opposite side of the external clamp type flow measurement device

The seventh mathematical model for the co-current propagation phase and counter-current propagation phase of the continuous sound wave at the real flow velocity of the liquid fluid is:

In this embodiment, the above-mentioned seventh mathematical model, that is, formula (37), is substituted into the above-mentioned sixth mathematical model (8) to obtain the volume flow in the external clamp-type flow measuring device installed on the opposite side of the acoustic wave transducer with respect to the continuous acoustic wave in the liquid The second mathematical model of the forward propagation phase and the countercurrent propagation phase at the real flow velocity of the fluid is:

In this embodiment, the above-mentioned first mathematical model and the second mathematical model are substituted into the eighth mathematical model, that is, the formula (38) and the formula (36) are substituted into the above-mentioned formula (11) to obtain the external clamp type of the acoustic wave transducer installed on the opposite side. The third mathematical model of the mass flow in the flow measurement device about the smooth propagation phase and the countercurrent propagation phase of the continuous sound wave at the real flow velocity of the liquid fluid:

Then, the actual downstream propagation phase and the actual countercurrent propagation phase of the continuous acoustic wave in the liquid fluid in the flowing state are obtained; finally, the obtained actual downstream propagation phase and actual countercurrent propagation phase are synchronously substituted into the above formulas (36), ( In 38) and (39), the liquid density, volume flow and mass flow in the external clamp-type flow measuring device installed on the opposite side of the acoustic wave transducer are obtained by synchronous calculation.

Embodiment 4

Based on the same inventive concept as the above-mentioned liquid multi-state parameter synchronous measurement method, the second aspect of the present invention also provides a liquid multi-state parameter synchronous measurement device, which will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to FIG. 3 , it is a block diagram of a multi-state parameter synchronous measurement device for fluid according to an exemplary embodiment of the present invention. Specifically, the synchronous measurement device includes: a mathematical model building module for constructing each state parameter in advance with respect to the continuous acoustic wave Mathematical model of the co-current propagation phase φ _d and the counter-current propagation phase φ _u at the real flow velocity of the liquid fluid; the data acquisition module is used to obtain the actual downstream propagation phase φ _d and the actual co-current propagation phase of the continuous acoustic wave in the liquid fluid under the flowing state The upstream propagation phase φ _u ; the data processing module is used for synchronously determining the plurality of state parameters according to the acquired actual downstream propagation phase φ _d , the actual upstream propagation phase φ _u and the constructed mathematical model of each state parameter.

In this embodiment, the plurality of state parameters include liquid density, volume flow rate and mass flow rate, and let the mathematical model of the liquid density with respect to the forward propagation phase and the countercurrent propagation phase of the continuous acoustic wave under the actual flow velocity of the liquid fluid be the first mathematical model, Let the mathematical model of the volume flow with respect to the forward propagation phase and the countercurrent propagation phase of the continuous sound wave at the real flow velocity of the liquid fluid be the second mathematical model, and the mass flow rate with respect to the forward flow propagation phase and the countercurrent propagation of the continuous sound wave at the real flow velocity of the liquid fluid. The mathematical model of the phase is a third mathematical model. Correspondingly, in this embodiment, the mathematical model building module specifically includes: a first mathematical model building unit, configured to build a forward flow of the liquid density with respect to the continuous acoustic wave under the real flow velocity of the liquid fluid The first mathematical model of the propagation phase and the counter-current propagation phase; the second mathematical model building unit is used to construct the second mathematical model of the volume flow with respect to the forward-current propagation phase and the counter-current propagation phase of the continuous sound wave at the real flow velocity of the liquid fluid; the third The mathematical model construction unit is used for constructing a third mathematical model of the mass flow with respect to the co-current propagation phase and the counter-current propagation phase of the continuous sound wave at the real flow velocity of the liquid fluid.

In one or more embodiments, the first mathematical model constructing unit specifically includes: a fourth mathematical model constructing subunit, configured to construct a real density of the liquid with respect to the liquid fluid based on the principle that sound waves propagate in the form of longitudinal waves in the liquid fluid The fourth mathematical model of the elastic modulus at the flow velocity and the hydrostatic propagation velocity of the continuous sound wave at the real flow velocity of the liquid fluid; the fifth mathematical model constructs a subunit for the forward propagation phase and The countercurrent propagation phase is used to construct the fifth mathematical model of the hydrostatic propagation velocity about the downstream propagation phase and the countercurrent propagation phase; the first mathematical model constructs a subunit for combining the fourth mathematical model and the fifth mathematical model to obtain the first mathematical model.

In one or more embodiments, the second mathematical model construction unit specifically includes: a sixth mathematical model construction subunit for constructing a sixth mathematical model of the volume flow with respect to the actual flow rate of the liquid fluid; a seventh mathematical model construction subunit , which is used to construct the seventh mathematical model of the forward propagation phase and the countercurrent propagation phase of the continuous acoustic wave at the real flow velocity of the liquid fluid based on the forward propagation phase and the countercurrent propagation phase of the continuous acoustic wave at the real flow velocity of the liquid fluid. ; The second mathematical model building subunit is used for combining the seventh mathematical model and the sixth mathematical model to obtain the second mathematical model.

In one or more embodiments, the third mathematical model construction unit specifically includes: an eighth mathematical model construction subunit for constructing an eighth mathematical model of mass flow with respect to the density and volume flow of liquid fluid; the third mathematical model construction The subunit is configured to obtain a third mathematical model by combining the first mathematical model constructed by the first mathematical model constructing unit, the second mathematical model constructed by the second mathematical model constructing unit, and the eighth mathematical model.

Embodiment 5

In a third aspect of the present invention, an electronic device is provided, including a memory 502, a processor 501, and a computer program stored in the memory 502 and running on the processor 501, and the processor 501 implements the program when the processor 501 executes the program. The steps of the method described above. For the convenience of description, only the parts related to the embodiments of the present specification are shown, and the specific technical details are not disclosed, please refer to the method part of the embodiments of the present specification. The electronic device may include various electronic devices, PC computers, network cloud servers, even mobile phones, tablet computers, PDA (Personal Digital Assistant, personal digital assistant), POS (Point of Sales, sales terminal), vehicle computer, desktop Any electronic device such as a computer.

Specifically, as shown in FIG. 4 , a structural block diagram of an electronic device related to the technical solutions provided by the embodiments of this specification, the bus 500 may include any number of interconnected buses and bridges, which will include one or more interconnected buses and bridges represented by the processor 501 . A processor and various circuits of memory represented by memory 502 are linked together. The bus 500 may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and thus will not be described further herein. Communication interface 503 provides an interface between bus 500 and receiver and/or transmitter 504, which may be separate receivers or transmitters or the same element such as a transceiver, providing A unit that communicates with various other devices over a transmission medium. The processor 501 is responsible for managing the bus 500 and general processing, while the memory 502 may be used to store data used by the processor 501 in performing operations.

Those skilled in the art can easily understand from the description of the above embodiments that the exemplary embodiments described herein can be implemented by software, or can be implemented by software combined with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, and the software product may be stored in a computer-readable storage medium (which may be a CD-ROM, a U disk, a mobile hard disk, etc.) or on a network, Several instructions are included to cause a computing device (which may be a personal computer, a server, or a network device, etc.) to perform the above-described methods according to embodiments of the present disclosure.

The computer-readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, carrying readable program code therein. Such propagated data signals may take a variety of forms including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing. A readable storage medium can also be any readable medium other than a readable storage medium that can transmit, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for performing the operations of the present disclosure may be written in any combination of one or more programming languages, including object-oriented programming languages—such as Java, C++, etc., as well as conventional procedural Programming Language - such as the "C" language or similar programming language. The program code may execute entirely on the user computing device, partly on the user device, as a stand-alone software package, partly on the user computing device and partly on a remote computing device, or entirely on the remote computing device or server execute on. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (eg, using an Internet service provider business via an Internet connection).

The above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by a device, the computer-readable medium is made to realize the following functions: respectively construct each of the state parameters with respect to the continuous acoustic wave in the liquid. Mathematical models of the co-current propagation phase φ _d and the counter-current propagation phase φ _u under the real flow velocity of the fluid; obtain the actual co-current propagation phase φ _d and the actual counter-current propagation phase φ _u of the continuous acoustic wave in the liquid fluid in the flowing state; According to the acquired actual downstream propagation phase φ _d , the actual upstream propagation phase φ _u and the constructed mathematical model, a plurality of the state parameters are synchronously determined.

Those skilled in the art can understand that the above-mentioned modules may be distributed in the apparatus according to the description of the embodiment, and corresponding changes may also be made in one or more apparatuses that are uniquely different from this embodiment. The modules in the above embodiments may be combined into one module, or may be further split into multiple sub-modules.

From the description of the above embodiments, those skilled in the art can easily understand that the exemplary embodiments described herein may be implemented by software, or may be implemented by software combined with necessary hardware. Therefore, the technical solutions according to the embodiments of the present disclosure may be embodied in the form of software products, and the software products may be stored in a non-volatile storage medium (which may be CD-ROM, U disk, mobile hard disk, etc.) or on a network , including several instructions to cause a computing device (which may be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to an embodiment of the present disclosure.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a computer terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (10)

1. a multi-state parameter synchronous measurement method of fluid, is characterized in that, comprises: Obtain the actual co-current propagation phase φ _d and the actual counter-current propagation phase φ _u of the continuous acoustic wave in the liquid fluid in the flowing state; According to the acquired actual downstream propagation phase φ _d , the actual upstream propagation phase φ _u and the pre-built mathematical model of each state parameter, synchronously determine a plurality of the state parameters; Wherein, the mathematical model of each of the state parameters is constructed in advance based on the forward propagation phase and the countercurrent propagation phase of the continuous sound wave at the real flow velocity of the liquid fluid. 2. The method of claim 1, wherein a plurality of the state parameters include liquid density, volume flow, and mass flow, wherein, The first mathematical model of the liquid density with respect to the forward propagation phase and the countercurrent propagation phase is:

The second mathematical model of the volume flow with respect to the forward propagation phase and the countercurrent propagation phase is:

The third mathematical model of the mass flow with respect to the forward propagation phase and the countercurrent propagation phase is:

Wherein, E is the elastic modulus of the liquid fluid, L ₀ is the propagation length of the continuous sound wave in the liquid fluid, f is the frequency of the continuous sound wave, and R is the radius of the pipeline channel where the liquid fluid is located . 3. The method according to claim 2, wherein the step of constructing the first mathematical model specifically comprises: constructing a fourth mathematical model of the elastic modulus E of the liquid density with respect to the true flow velocity of the liquid fluid and the hydrostatic propagation velocity c of the continuous sound wave; Based on the forward propagation phase and the countercurrent propagation phase of the continuous acoustic wave at the real flow velocity of the liquid fluid, constructing a fifth mathematical model of the hydrostatic propagation velocity with respect to the forward propagation phase and the countercurrent propagation phase; The first mathematical model is obtained by combining the fifth mathematical model and the fourth mathematical model. 4. The method according to claim 3, wherein the step of constructing the second mathematical model specifically comprises: constructing a sixth mathematical model of the volume flow with respect to the real flow rate of the liquid fluid; Based on the forward propagation phase and the countercurrent propagation phase of the continuous acoustic wave at the true velocity of the liquid fluid, a seventh calculation of the true flow velocity of the liquid fluid with respect to the forward propagation phase and the countercurrent propagation phase is constructed mathematical model; The second mathematical model is obtained by combining the seventh mathematical model and the sixth mathematical model. 5. The method according to any one of claims 2 to 4, wherein the step of constructing the third mathematical model specifically comprises: constructing an eighth mathematical model of the mass flow with respect to the liquid density and the volume flow; The third mathematical model is obtained by combining the first mathematical model, the second mathematical model and the eighth mathematical model. 6. The method according to any one of claims 1 to 5, wherein the step of acquiring the actual downstream propagation phase and the actual countercurrent propagation phase specifically includes: The actual forward propagation phase and the actual countercurrent propagation phase of the continuous sound wave in the liquid fluid are obtained by using the continuous wave measurement method of multiple sidetones; or, The actual forward propagation phase and the actual countercurrent propagation phase of the continuous sound wave in the liquid fluid are obtained by adopting the ultrasonic measurement method of sidetone phasing; or, First, the continuous wave measurement method is used to obtain the upstream phase difference and the upstream phase difference of the continuous acoustic wave in the liquid fluid, and then the multi-period pulse train is used as the excitation wave to obtain the fuzzy number of the upstream propagation and the countercurrent propagation respectively. , and the actual downstream propagation phase and the countercurrent propagation phase are respectively calculated in combination with the downstream phase difference, the upstream phase difference and the corresponding fuzzy number. 7. The method according to any one of claims 1 to 5, further comprising: acquiring the actual propagation phase of the continuous sound wave synchronously when acquiring the actual downstream propagation phase and the actual countercurrent propagation phase of the continuous sound wave amplitude, and based on the actual propagation amplitude, the actual downstream propagation phase, and the actual countercurrent propagation phase, the gas content in the liquid fluid is synchronously determined. 8. A fluid multi-state parameter synchronous measurement device, characterized in that, comprising: Mathematical model building module, which is used to respectively construct in advance a mathematical model of each of the state parameters with respect to the forward propagation phase φ _d and the countercurrent propagation phase φ _u of the continuous acoustic wave under the real flow velocity of the liquid fluid; The data acquisition module is used to acquire the actual forward propagation phase φ _d and the actual countercurrent propagation phase φ _u of the continuous acoustic wave in the liquid fluid under the flowing state; A data processing module for synchronously determining a plurality of the state parameters according to the acquired actual downstream propagation phase φ _d , the actual upstream propagation phase φ _u and each mathematical model constructed by the mathematical model building module . 9. An electronic device comprising at least one processor, at least one memory, a communication interface and a bus; wherein, The processor, the memory, and the communication interface communicate with each other through the bus; The memory is used to store a program for executing the method of any one of claims 1 to 7; The processor is configured to execute programs stored in the memory. 10. A computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, a device where the storage medium is located is controlled to execute the steps of any one of the methods in claims 1 to 7 .

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