CN118601886A - A method and system for monitoring the state of a screw vacuum pump - Google Patents
A method and system for monitoring the state of a screw vacuum pump Download PDFInfo
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- CN118601886A CN118601886A CN202411075884.7A CN202411075884A CN118601886A CN 118601886 A CN118601886 A CN 118601886A CN 202411075884 A CN202411075884 A CN 202411075884A CN 118601886 A CN118601886 A CN 118601886A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
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Abstract
本发明涉及数据监测领域，公开了一种螺杆真空泵的状态监测方法及系统，包括：获取螺杆真空泵初始转速与盘式真空过滤机的真空度关系，得到螺杆真空泵性能衰减量，校正模块根据螺杆真空泵性能衰减量，对螺杆真空泵进行补偿，得到相同真空度下补偿后的螺杆真空泵转速，数据采集装置采集盘式真空过滤机的第一真空度，第一真空度不小于目标真空度，完成螺杆真空泵控制。通过本发明不仅能够提高螺杆真空泵的运行效率与稳定性，还能延长其使用寿命，降低维护成本。
The present invention relates to the field of data monitoring, and discloses a state monitoring method and system for a screw vacuum pump, including: obtaining the relationship between the initial speed of the screw vacuum pump and the vacuum degree of a disc vacuum filter, obtaining the performance attenuation of the screw vacuum pump, a correction module compensating the screw vacuum pump according to the performance attenuation of the screw vacuum pump, obtaining the compensated screw vacuum pump speed under the same vacuum degree, a data acquisition device collecting the first vacuum degree of the disc vacuum filter, the first vacuum degree is not less than the target vacuum degree, and completing the control of the screw vacuum pump. The present invention can not only improve the operating efficiency and stability of the screw vacuum pump, but also extend its service life and reduce maintenance costs.
Description
Technical Field
The invention relates to the field of data monitoring, in particular to a method and a system for monitoring the state of a screw vacuum pump.
Background
The screw vacuum pump is used as an important positive displacement vacuum pump and is widely applied to a plurality of industries such as chemical industry, pharmacy, food, electronics and the like. The screw vacuum pump can realize synchronous and opposite rotation of the meshed screws in the inner cavity to generate the suction and exhaust effects, thereby providing a stable power source for the vacuum environment. However, as the service time increases, the performance of the screw vacuum pump gradually decays, manifesting as a decrease in vacuum at the same rotational speed, directly affecting the stability and reliability of the overall vacuum system.
The traditional screw vacuum pump monitoring method mainly relies on periodic manual detection and simple instrument monitoring, and has obvious defects. On the one hand, manual detection is time-consuming and labor-consuming, and small changes of the performance attenuation of the screw vacuum pump are difficult to capture; on the other hand, the simple instrument monitoring can only reflect the current running state of the screw vacuum pump, and can not predict and adjust future performance trend.
In recent years, with the rapid development of sensor technology, data processing technology and automation control technology, new possibilities are provided for real-time monitoring and intelligent control of the screw vacuum pump. By integrating a plurality of sensors, key parameters such as the rotating speed, the temperature, the pressure and the like of the screw vacuum pump are monitored in real time, and comprehensive evaluation and dynamic adjustment of the performance of the screw vacuum pump can be realized by combining an advanced data processing algorithm and an automatic control strategy.
However, most of the existing screw vacuum pump state monitoring systems focus on monitoring of single parameters, and lack comprehensive evaluation and adjustment mechanisms. Particularly in the face of the complex problem of reduced performance of screw vacuum pumps, there is often no effective solution provided.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a state monitoring method of a screw vacuum pump, which comprises the following steps:
Step one, a screw vacuum pump state monitoring module generates a screw vacuum pump control container, the screw vacuum pump control container is connected with a testing module, the testing module carries out linkage test on a screw vacuum pump and a disc type vacuum filter to obtain the relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter, the relation between the initial rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter is obtained, the performance attenuation quantity of the screw vacuum pump is obtained, if the performance attenuation quantity is larger than a set attenuation quantity threshold value, the screw vacuum pump is replaced, and otherwise, the step two is carried out;
Step two, the relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter is sent to a correction module, the correction module compensates the screw vacuum pump according to the performance attenuation quantity of the screw vacuum pump to obtain the rotating speed of the screw vacuum pump after compensation under the same vacuum degree, and the obtained relation between the rotating speed of the screw vacuum pump after compensation and the vacuum degree of the disc type vacuum filter is sent to a screw vacuum pump control module to control the screw vacuum pump;
Step three, the data acquisition device acquires the first vacuum degree of the disc type vacuum filter, and if the first vacuum degree is not smaller than the target vacuum degree, the step six is entered; otherwise, obtaining a pressure difference value according to the target vacuum degree and the first vacuum degree, and entering a step four;
Step four, obtaining the amount of gas to be removed according to the pressure difference value and the gas capacity, obtaining the first rotating speed of the required screw vacuum pump according to the amount of gas to be removed and the correction time length, regulating the first rotating speed of the required screw vacuum pump by a screw vacuum pump control module until the first vacuum degree is equal to the target vacuum degree, and entering a step five;
Step five, obtaining a gas variable quantity in unit time according to the vacuum degree variable quantity in unit time, obtaining a corrected rotating speed of the screw vacuum pump according to the gas variable quantity in unit time, and adjusting a first rotating speed of the screw vacuum pump according to the corrected rotating speed of the screw vacuum pump to obtain the rotating speed of the screw vacuum pump, wherein a screw vacuum pump control module adjusts the screw vacuum pump to the rotating speed of the screw vacuum pump;
And step six, completing the control of the screw vacuum pump.
Further, the obtaining the relation between the initial rotation speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter to obtain the performance attenuation quantity of the screw vacuum pump comprises the following steps:
And acquiring a rotating speed difference value of the current rotating speed of the screw vacuum pump and the initial rotating speed of the screw vacuum pump under the same vacuum degree according to the acquired relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter, wherein the ratio of the rotating speed difference value to the initial rotating speed of the screw vacuum pump is the performance attenuation quantity of the screw vacuum pump.
Further, the relation between the current rotation speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter is sent to a correction module, the correction module compensates the screw vacuum pump according to the performance attenuation quantity of the screw vacuum pump, and obtains the rotation speed of the compensated screw vacuum pump under the same vacuum degree, and the method comprises the following steps:
The sum of the obtained rotational speed difference and the initial rotational speed is the rotational speed of the screw vacuum pump compensated under the vacuum degree of the disc type vacuum filter corresponding to the initial rotational speed, namely the rotational speed of the screw vacuum pump compensated under the same vacuum degree.
Further, the obtaining the amount of the gas to be removed according to the pressure difference and the gas capacity, and obtaining the required first rotation speed of the screw vacuum pump according to the amount of the gas to be removed and the correction duration, including:
And obtaining the gas quantity to be removed according to the pressure difference and the gas capacity, obtaining the rotating speed to be increased of the screw vacuum pump according to the set redundancy time length, and obtaining the first rotating speed of the screw vacuum pump according to the rotating speed to be increased of the screw vacuum pump and the current rotating speed of the screw vacuum pump.
Further, the obtaining the gas variation in unit time according to the vacuum variation in unit time, and obtaining the corrected rotation speed of the screw vacuum pump according to the gas variation in unit time, includes:
Obtaining a corresponding unit time gas variable quantity according to the unit vacuum degree variable quantity, and obtaining the rotating speed of the screw vacuum pump to be changed according to the unit time gas variable quantity, wherein the rotating speed of the screw vacuum pump to be changed is a correction rotating speed of the screw vacuum pump; and increasing or decreasing the first rotation speed of the screw vacuum pump according to the rotation speed required to be changed by the screw vacuum pump, so as to obtain the rotation speed of the screw vacuum pump.
A state monitoring system of a screw vacuum pump, which is applied to a state monitoring method of the screw vacuum pump, comprises the following steps: the system comprises a screw vacuum pump state monitoring module, a screw vacuum pump control module, a data processing module, a communication module, a testing module and a correction module;
The screw vacuum pump state monitoring module, the screw vacuum pump control module, the communication module, the test module and the correction module are respectively connected with the data processing module; the screw vacuum pump is connected with the screw vacuum pump control module;
the screw vacuum pump state monitoring module is used for collecting state data including rotating speed data and fault data of the screw vacuum pump.
Preferably, the screw vacuum pump state monitoring module comprises a screw vacuum pump control container generating module and a state data acquisition module;
the screw vacuum pump control container generation module and the state data acquisition module are respectively connected with the data processing module.
The beneficial effects of the invention are as follows: and the linkage relation between the screw vacuum pump and the disc type vacuum filter is monitored in real time, the performance attenuation quantity of the screw vacuum pump is estimated, and the screw vacuum pump is intelligently compensated and adjusted according to the estimation result. The invention not only can improve the operation efficiency and stability of the screw vacuum pump, but also can prolong the service life of the screw vacuum pump and reduce the maintenance cost.
Drawings
FIG. 1 is a schematic flow chart of a method for monitoring the state of a screw vacuum pump;
Fig. 2 is a schematic diagram of a status monitoring system of a screw vacuum pump.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
As shown in fig. 1, a method for monitoring the state of a screw vacuum pump includes the following steps:
Step one, a screw vacuum pump state monitoring module generates a screw vacuum pump control container, the screw vacuum pump control container is connected with a testing module, the testing module carries out linkage test on a screw vacuum pump and a disc type vacuum filter to obtain the relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter, the relation between the initial rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter is obtained, the performance attenuation quantity of the screw vacuum pump is obtained, if the performance attenuation quantity is larger than a set attenuation quantity threshold value, the screw vacuum pump is replaced, and otherwise, the step two is carried out;
Step two, the relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter is sent to a correction module, the correction module compensates the screw vacuum pump according to the performance attenuation quantity of the screw vacuum pump to obtain the rotating speed of the screw vacuum pump after compensation under the same vacuum degree, and the obtained relation between the rotating speed of the screw vacuum pump after compensation and the vacuum degree of the disc type vacuum filter is sent to a screw vacuum pump control module to control the screw vacuum pump;
Step three, the data acquisition device acquires the first vacuum degree of the disc type vacuum filter, and if the first vacuum degree is not smaller than the target vacuum degree, the step six is entered; otherwise, obtaining a pressure difference value according to the target vacuum degree and the first vacuum degree, and entering a step four;
Step four, obtaining the amount of gas to be removed according to the pressure difference value and the gas capacity, obtaining the first rotating speed of the required screw vacuum pump according to the amount of gas to be removed and the correction time length, regulating the first rotating speed of the required screw vacuum pump by a screw vacuum pump control module until the first vacuum degree is equal to the target vacuum degree, and entering a step five;
Step five, obtaining a gas variable quantity in unit time according to the vacuum degree variable quantity in unit time, obtaining a corrected rotating speed of the screw vacuum pump according to the gas variable quantity in unit time, and adjusting a first rotating speed of the screw vacuum pump according to the corrected rotating speed of the screw vacuum pump to obtain the rotating speed of the screw vacuum pump, wherein a screw vacuum pump control module adjusts the screw vacuum pump to the rotating speed of the screw vacuum pump;
And step six, completing the control of the screw vacuum pump.
The method for obtaining the performance attenuation of the screw vacuum pump by obtaining the relation between the initial rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter comprises the following steps:
And acquiring a rotating speed difference value of the current rotating speed of the screw vacuum pump and the initial rotating speed of the screw vacuum pump under the same vacuum degree according to the acquired relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter, wherein the ratio of the rotating speed difference value to the initial rotating speed of the screw vacuum pump is the performance attenuation quantity of the screw vacuum pump.
The relation of the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter is sent to a correction module, the correction module compensates the screw vacuum pump according to the performance attenuation quantity of the screw vacuum pump, and the rotating speed of the screw vacuum pump after compensation under the same vacuum degree is obtained, and the method comprises the following steps:
The sum of the obtained rotational speed difference and the initial rotational speed is the rotational speed of the screw vacuum pump compensated under the vacuum degree of the disc type vacuum filter corresponding to the initial rotational speed, namely the rotational speed of the screw vacuum pump compensated under the same vacuum degree.
The method for obtaining the required first rotating speed of the screw vacuum pump according to the pressure difference value and the gas capacity, the gas quantity to be removed and the correction duration, comprises the following steps:
And obtaining the gas quantity to be removed according to the pressure difference and the gas capacity, obtaining the rotating speed to be increased of the screw vacuum pump according to the set redundancy time length, and obtaining the first rotating speed of the screw vacuum pump according to the rotating speed to be increased of the screw vacuum pump and the current rotating speed of the screw vacuum pump.
The method for obtaining the gas variation in unit time according to the vacuum variation in unit time and obtaining the corrected rotating speed of the screw vacuum pump according to the gas variation in unit time comprises the following steps:
Obtaining a corresponding unit time gas variable quantity according to the unit vacuum degree variable quantity, and obtaining the rotating speed of the screw vacuum pump to be changed according to the unit time gas variable quantity, wherein the rotating speed of the screw vacuum pump to be changed is a correction rotating speed of the screw vacuum pump; and increasing or decreasing the first rotation speed of the screw vacuum pump according to the rotation speed required to be changed by the screw vacuum pump, so as to obtain the rotation speed of the screw vacuum pump.
As shown in fig. 2, a system for monitoring the state of a screw vacuum pump, which is applied to the method for monitoring the state of the screw vacuum pump, comprises the following steps: the system comprises a screw vacuum pump state monitoring module, a screw vacuum pump control module, a data processing module, a communication module, a testing module and a correction module;
The screw vacuum pump state monitoring module, the screw vacuum pump control module, the communication module, the test module and the correction module are respectively connected with the data processing module; the screw vacuum pump is connected with the screw vacuum pump control module;
the screw vacuum pump state monitoring module is used for collecting state data including rotating speed data and fault data of the screw vacuum pump.
The screw vacuum pump state monitoring module comprises a screw vacuum pump control container generating module and a state data acquisition module;
the screw vacuum pump control container generation module and the state data acquisition module are respectively connected with the data processing module.
Specifically, the state monitoring method of the screw vacuum pump is a comprehensive and real-time monitoring and control strategy, and aims to ensure that the screw vacuum pump can keep the best performance under various working conditions. Mainly comprises the following steps:
the screw vacuum pump state monitoring module firstly generates a control container and establishes connection with the testing module.
And the testing module performs linkage test on the screw vacuum pump and the disc type vacuum filter, and records the vacuum degree of the disc type vacuum filter under different rotating speeds, thereby obtaining the relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter.
And obtaining the relation between the initial rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter, and calculating the performance attenuation quantity of the screw vacuum pump by comparing the difference of the current rotating speed and the initial rotating speed under the same vacuum degree.
If the performance attenuation is larger than the set attenuation threshold, the screw vacuum pump performance is obviously reduced and needs to be replaced; otherwise, enter step two and carry on the further adjustment.
And sending the relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter to a correction module.
And the correction module calculates the rotating speed required to be compensated under the same vacuum degree according to the performance attenuation quantity of the screw vacuum pump so as to obtain the rotating speed of the screw vacuum pump after compensation.
And sending the relation between the compensated rotating speed and the vacuum degree of the disc type vacuum filter to a screw vacuum pump control module so as to accurately control the screw vacuum pump.
Data acquisition and preliminary judgment: the data acquisition device acquires the first vacuum degree of the disc type vacuum filter in real time. If the first vacuum degree is not less than the target vacuum degree, indicating that the current vacuum degree meets the requirement, and directly entering the step six to complete the control; otherwise, according to the difference value between the target vacuum degree and the first vacuum degree, entering a step four for further adjustment.
Calculating the gas quantity and adjusting the rotating speed: and calculating the amount of the gas to be removed according to the pressure difference and the gas capacity. And then calculating the first rotating speed of the required screw vacuum pump according to the amount of the gas to be discharged and the set correction time length. The screw vacuum pump control module adjusts the screw vacuum pump to this rotational speed until the first vacuum level equals the target vacuum level, and then proceeds to step five.
Correcting the rotating speed and fine adjustment: and after the target vacuum degree is reached, continuously monitoring the variation of the vacuum degree in unit time to calculate the variation of the gas in unit time. According to this variation, the rotational speed of the screw vacuum pump is further corrected to ensure the stability of the vacuum degree. The screw vacuum pump control module finely adjusts the screw vacuum pump according to the corrected rotating speed.
And (3) completing control: after the adjustment of the steps, the control of the screw vacuum pump is completed, so that the screw vacuum pump can be ensured to stably and efficiently run in practical application.
Calculation of the performance attenuation amount: the method comprises the steps of comparing a rotating speed difference value when the current rotating speed and the initial rotating speed of the screw vacuum pump reach the same vacuum degree, and taking the ratio of the difference value and the initial rotating speed as performance attenuation.
Calculating rotation speed compensation: and adding the rotating speed difference value with the initial rotating speed to obtain the rotating speed of the screw vacuum pump after compensation under the vacuum degree of the disc type vacuum filter corresponding to the initial rotating speed.
Calculation of the amount of gas to be removed: and calculating the amount of the gas to be removed according to the relation between the pressure difference and the gas capacity. And then, calculating the rotating speed required to be increased by the screw vacuum pump by combining the set redundancy time (namely the correction time), so as to obtain a first rotating speed.
Calculating a corrected rotation speed: and calculating the gas variation in unit time according to the variation of the vacuum degree in unit time. And then according to the variation, calculating the rotating speed (namely the corrected rotating speed) of the screw vacuum pump to be changed, and correspondingly adjusting the first rotating speed.
In order to realize the state monitoring method, a set of state monitoring system of the screw vacuum pump is designed. The system comprises a screw vacuum pump state monitoring module, a screw vacuum pump control module, a data processing module, a communication module and a device testing and correcting module.
The screw vacuum pump state monitoring module: and the system is responsible for collecting state data such as rotating speed data, fault data and the like of the screw vacuum pump. The module further comprises a screw vacuum pump control container generation module and a state data acquisition module which are respectively used for generating a control container and acquiring various state data of the screw vacuum pump.
And a data processing module: the system is used for receiving and processing data from each module and executing calculation and judgment in the state monitoring method.
And a communication module: and the system is responsible for data transmission and communication among the modules, and ensures the real-time performance and accuracy of the data.
Device test and correction module: the device is used for carrying out linkage test on the screw vacuum pump and the disc type vacuum filter, and compensating and adjusting the screw vacuum pump according to the test result.
Screw vacuum pump control module: according to the instruction of the data processing module, the screw vacuum pump is accurately controlled, so that the screw vacuum pump can be ensured to stably and efficiently run in practical application.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (7)
1. The state monitoring method of the screw vacuum pump is characterized by comprising the following steps of:
Step one, a screw vacuum pump state monitoring module generates a screw vacuum pump control container, the screw vacuum pump control container is connected with a testing module, the testing module carries out linkage test on a screw vacuum pump and a disc type vacuum filter to obtain the relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter, the relation between the initial rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter is obtained, the performance attenuation quantity of the screw vacuum pump is obtained, if the performance attenuation quantity is larger than a set attenuation quantity threshold value, the screw vacuum pump is replaced, and otherwise, the step two is carried out;
Step two, the relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter is sent to a correction module, the correction module compensates the screw vacuum pump according to the performance attenuation quantity of the screw vacuum pump to obtain the rotating speed of the screw vacuum pump after compensation under the same vacuum degree, and the obtained relation between the rotating speed of the screw vacuum pump after compensation and the vacuum degree of the disc type vacuum filter is sent to a screw vacuum pump control module to control the screw vacuum pump;
Step three, the data acquisition device acquires the first vacuum degree of the disc type vacuum filter, and if the first vacuum degree is not smaller than the target vacuum degree, the step six is entered; otherwise, obtaining a pressure difference value according to the target vacuum degree and the first vacuum degree, and entering a step four;
Step four, obtaining the amount of gas to be removed according to the pressure difference value and the gas capacity, obtaining the first rotating speed of the required screw vacuum pump according to the amount of gas to be removed and the correction time length, regulating the first rotating speed of the required screw vacuum pump by a screw vacuum pump control module until the first vacuum degree is equal to the target vacuum degree, and entering a step five;
Step five, obtaining a gas variable quantity in unit time according to the vacuum degree variable quantity in unit time, obtaining a corrected rotating speed of the screw vacuum pump according to the gas variable quantity in unit time, and adjusting a first rotating speed of the screw vacuum pump according to the corrected rotating speed of the screw vacuum pump to obtain the rotating speed of the screw vacuum pump, wherein a screw vacuum pump control module adjusts the screw vacuum pump to the rotating speed of the screw vacuum pump;
And step six, completing the control of the screw vacuum pump.
2. The method for monitoring the state of a screw vacuum pump according to claim 1, wherein the step of obtaining the relation between the initial rotational speed of the screw vacuum pump and the vacuum degree of the disc vacuum filter to obtain the performance attenuation of the screw vacuum pump comprises the steps of:
And acquiring a rotating speed difference value of the current rotating speed of the screw vacuum pump and the initial rotating speed of the screw vacuum pump under the same vacuum degree according to the acquired relation between the current rotating speed of the screw vacuum pump and the vacuum degree of the disc type vacuum filter, wherein the ratio of the rotating speed difference value to the initial rotating speed of the screw vacuum pump is the performance attenuation quantity of the screw vacuum pump.
3. The method for monitoring the state of a screw vacuum pump according to claim 2, wherein the step of transmitting the relation between the current rotation speed of the screw vacuum pump and the vacuum degree of the disc vacuum filter to the correction module, the correction module compensating the screw vacuum pump according to the performance attenuation amount of the screw vacuum pump to obtain the rotation speed of the compensated screw vacuum pump under the same vacuum degree, comprises:
The sum of the obtained rotational speed difference and the initial rotational speed is the rotational speed of the screw vacuum pump compensated under the vacuum degree of the disc type vacuum filter corresponding to the initial rotational speed, namely the rotational speed of the screw vacuum pump compensated under the same vacuum degree.
4. The method for monitoring the state of a screw vacuum pump according to claim 3, wherein the obtaining the amount of the gas to be removed according to the pressure difference and the gas capacity, and the obtaining the first rotation speed of the screw vacuum pump according to the amount of the gas to be removed and the correction time length, comprises:
And obtaining the gas quantity to be removed according to the pressure difference and the gas capacity, obtaining the rotating speed to be increased of the screw vacuum pump according to the set redundancy time length, and obtaining the first rotating speed of the screw vacuum pump according to the rotating speed to be increased of the screw vacuum pump and the current rotating speed of the screw vacuum pump.
5. The method for monitoring the state of a screw vacuum pump according to claim 4, wherein the obtaining the gas variation in unit time according to the variation in vacuum degree in unit time and obtaining the corrected rotational speed of the screw vacuum pump according to the gas variation in unit time comprises:
Obtaining a corresponding unit time gas variable quantity according to the unit vacuum degree variable quantity, and obtaining the rotating speed of the screw vacuum pump to be changed according to the unit time gas variable quantity, wherein the rotating speed of the screw vacuum pump to be changed is a correction rotating speed of the screw vacuum pump; and increasing or decreasing the first rotation speed of the screw vacuum pump according to the rotation speed required to be changed by the screw vacuum pump, so as to obtain the rotation speed of the screw vacuum pump.
6. A condition monitoring system of a screw vacuum pump, characterized by applying the condition monitoring method of the screw vacuum pump according to any one of claims 1 to 5, comprising: the system comprises a screw vacuum pump state monitoring module, a screw vacuum pump control module, a data processing module, a communication module, a testing module and a correction module;
The screw vacuum pump state monitoring module, the screw vacuum pump control module, the communication module, the test module and the correction module are respectively connected with the data processing module; the screw vacuum pump is connected with the screw vacuum pump control module;
the screw vacuum pump state monitoring module is used for collecting state data including rotating speed data and fault data of the screw vacuum pump.
7. The system according to claim 6, wherein the screw vacuum pump status monitoring module comprises a screw vacuum pump control container generation module and a status data acquisition module;
the screw vacuum pump control container generation module and the state data acquisition module are respectively connected with the data processing module.
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| CN119222169A (en) * | 2024-12-03 | 2024-12-31 | 南京真空泵厂有限公司 | Intelligent control system and method for liquid ring vacuum pump |
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