CN116677815B - Valve abnormality detection method, system, computer equipment and medium - Google Patents
Valve abnormality detection method, system, computer equipment and medium Download PDFInfo
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- CN116677815B CN116677815B CN202310887143.8A CN202310887143A CN116677815B CN 116677815 B CN116677815 B CN 116677815B CN 202310887143 A CN202310887143 A CN 202310887143A CN 116677815 B CN116677815 B CN 116677815B
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- 230000005856 abnormality Effects 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 23
- 230000002159 abnormal effect Effects 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims description 26
- 238000004590 computer program Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 230000007246 mechanism Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009295 sperm incapacitation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention relates to the field of valve detection, and provides a valve abnormality detection method, a valve abnormality detection system, computer equipment and a medium. The valve abnormality detection method comprises the following steps: acquiring a driving current curve of the electric actuator in the process of driving the valve switch; and detecting the abnormality of the valve according to the driving current curve and the preset current curve to obtain a valve abnormality detection result. According to the invention, whether the valve has the abnormal conditions such as jamming and the like is judged through the driving current curve, so that the safety production accidents caused by the abnormal conditions such as jamming and the like of the valve are avoided.
Description
Technical Field
The present invention relates to the field of valve detection, and in particular, to a method, a system, a computer device, and a medium for detecting valve anomalies.
Background
Along with the trend of unmanned and less-unmanned development of industrial production sites, more and more industrial sites are provided, an original manual control valve is changed into an electric control valve by adding an electric executing mechanism, and a logic control and interlocking control mode is set by a programmable logic controller (Programmable Logic Controller, PLC), so that the automation level of the production sites is improved. Valves with electric mechanisms are often important production equipment in established unmanned and unmanned stations, and control the whole production process flow and important production parameters such as pressure, flow and the like. Once the valve fails to act due to the valve jam and other faults when the key electric valve is switched in parameters, serious production accidents can be caused, and most of electric driven mechanical devices are not gradual from jam (moment increase) to jam (incapacitation) from the practical experience of a production site.
Disclosure of Invention
The invention provides a valve abnormality detection method, a valve abnormality detection system, computer equipment and a medium for detecting the valve abnormality such as jamming and avoiding safety production accidents caused by the jamming and other abnormalities.
In a first aspect, the present invention provides a method for detecting valve anomalies, the method comprising:
acquiring a driving current curve of the electric actuator in the process of driving the valve switch;
and detecting the abnormality of the valve according to the driving current curve and the preset current curve to obtain a valve abnormality detection result.
By the method, the driving current curve in the valve switching process is detected, the driving current curve is compared with the preset current curve, the valve is detected abnormally, and safety production accidents caused by abnormality such as valve jamming are avoided.
In an alternative embodiment, the step of determining the preset current profile comprises:
Acquiring a historical current curve generated by an electric actuator in the process of driving a valve switch for a plurality of times;
calculating an average curve of the plurality of historical current curves, and taking the average curve as a preset current curve.
In an alternative embodiment, according to the driving current curve and the preset current curve, performing abnormality detection on the valve to obtain a valve abnormality detection result, including:
The current values of the driving current curve at different moments are differed from the current values of the preset current curve at corresponding moments, and the difference value of the driving current curve and the preset current curve at different moments is obtained;
And when the difference value at any moment is larger than the preset difference value, judging that the valve has abnormal conditions.
In an alternative embodiment, the method further comprises: when the valve has abnormal conditions, determining the abnormal position of the valve according to the moment when the difference value is larger than the preset difference value.
In an alternative embodiment, when there is an abnormal condition in the valve, determining the abnormal position of the valve according to the time when the difference is greater than the preset difference, includes:
Acquiring the switching speed of a valve;
And calculating the abnormal position of the valve according to the moment when the difference value is larger than the preset difference value and the opening and closing speed of the valve.
In a second aspect, the present invention provides a valve anomaly detection system comprising: a current transformer and a controller;
the current transformer is used for acquiring a driving current curve of the electric actuating mechanism in the process of driving the valve switch;
and the controller is used for carrying out abnormality detection on the valve according to the driving current curve and the preset current curve to obtain a valve abnormality detection result.
In an alternative embodiment, the system further comprises a communication transmitting device and a communication receiving device;
the communication transmitting equipment is used for receiving the driving current curve in the current transformer and transmitting the driving current curve to the communication receiving equipment;
and the communication receiving equipment is used for sending the received driving current curve to the controller.
In an alternative embodiment, the system further comprises a memory;
the memory is connected with the communication transmitting equipment and is used for storing the driving current curve;
And the controller is also used for updating the preset current curve according to the driving current curve in the preset time period.
In a third aspect, the present invention also provides a computer device, including a memory and a processor, where the memory and the processor are communicatively connected to each other, and the memory stores computer instructions, and the processor executes the computer instructions, thereby executing the steps of the valve anomaly detection method according to the first aspect or any implementation manner of the first aspect.
In a fourth aspect, the present invention also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the steps of the valve anomaly detection method of the first aspect or any implementation of the first aspect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for detecting valve anomalies according to an exemplary embodiment;
FIG. 2 is a schematic structural view of a ball valve in one example;
FIG. 3 is a schematic diagram of a valve anomaly detection system according to an exemplary embodiment;
FIG. 4 is a schematic view of the installation of the interior of an explosion proof junction box in one example;
Fig. 5 is a schematic diagram of transmission of a drive current signal in an example.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The invention provides a valve abnormality detection method, a valve abnormality detection system, computer equipment and a medium for detecting the valve abnormality such as jamming and avoiding safety production accidents caused by the jamming and other abnormalities.
Fig. 1 is a flowchart of a valve anomaly detection method according to an exemplary embodiment. As shown in fig. 1, the method includes the following steps S101 to S102.
Step S101: and acquiring a driving current curve of the electric actuator in the process of driving the valve switch.
In an alternative embodiment, the valve opening and closing process includes a valve opening process and a valve closing process, and the driving current curve includes a driving current curve of the electric actuator during the driving of the valve opening process and a driving current curve of the electric actuator during the driving of the valve closing process.
In an alternative embodiment, the power supply of the electric valve includes a U power supply, a V power supply, a W power supply, and an N power supply, and the driving current curve may be a current curve of one power supply of the electric valve, and may be, for example, the W power supply.
In an alternative embodiment, the drive current profile may be obtained by a current transformer.
Step S102: and detecting the abnormality of the valve according to the driving current curve and the preset current curve to obtain a valve abnormality detection result.
In an alternative embodiment, the predetermined current profile may be calculated from a historical current profile generated during multiple actuation of the valve switch.
In an alternative embodiment, the valve is detected for an abnormality by comparing the current value corresponding to the drive current curve at the same time with the current value corresponding to the preset current curve.
Fig. 2 is a schematic structural view of the ball valve. The ball valve comprises a valve rod, a packing, a ball body, a plate valve seat, a channel, a valve rod grease injection nozzle, a valve cavity plug, a lifting lug, a grease injection nozzle and a sewage draining nozzle. The ball valve is opened and closed by applying a horizontal rotation moment on the valve rod, and the valve rod drives the ball body to rotate 90 degrees and then closes, and the flow is cut off by means of the ball body and the plate valve seat. If the valve is jammed, whether the ball of the ball valve is jammed, the valve seat is jammed, and the packing valve rod is jammed, the driving moment acting on the valve rod is increased. The valve abnormality detection method provided by the invention is not only aimed at a ball valve, but also can be used for detection as long as the device uses a motor to drive a mechanical structure to move.
The electric actuating mechanism is mainly used for driving the opening and closing of the valve. The wiring of the power line consists of a power line and a signal line, wherein the power line is from a (three-phase) power supply provided by a distribution box; the signal line is composed of valve position input signals and valve position feedback signals from the control cabinet and four groups of alarm contacts S1-S4. Taking an adjusting type electric actuator as an example, the working principle of the electric actuator is that an alternating current servo motor is used as a position dish servo mechanism of a driving device, a 4-20 mA direct current control signal of an adjusting system is received by a matched position positioner control board to be compared with a position feedback signal of a position transmitter, the compared signal deviation is amplified to lead a power level to be conducted, and an output piece of the electric actuator is rotationally driven by the motor to move towards the direction of reducing the deviation until the deviation signal is smaller than a set value (dead zone). At this time, the output value of the actuator is stabilized at a position corresponding to the input signal. The electric valve is a combination of an electric actuator and a valve. The state control of each electric valve on site is completed through a data acquisition and monitoring control system (Supervisory Control And Data Acquisition, SCADA) so as to realize the control of a plurality of production parameters such as process flow switching, pressure, flow and the like on the production site.
When abnormal conditions such as jamming and the like of the valve are considered, the driving moment of the valve rod in the valve opening and closing process is increased, and then the driving current can be changed.
In an example, in the above step S102, the preset current profile is determined by:
firstly, a historical current curve generated by the electric actuator in the process of driving the valve switch for a plurality of times is obtained.
Then, calculating an average curve of the plurality of historical current curves, and taking the average curve as a preset current curve.
In an alternative embodiment, the ordinate of each point on the average curve is the average of the ordinate of the points corresponding to the plurality of historical current curves.
In an alternative embodiment, the historical current profile may change over the duration of use of the valve. Therefore, the preset current curve can also be obtained through the continuously updated historical current curve, namely, the preset current curve is not fixed and is updated in real time along with the change of the environmental working condition and the like, so that the abnormality detection result obtained according to the preset current curve is more accurate.
In an example, in the above step S102, the abnormality detection is performed on the valve by:
Firstly, the current values of the driving current curve at different moments are differed from the current values of the preset current curve at corresponding moments, and the difference value of the driving current curve and the preset current curve at different moments is obtained.
And then, when the difference value at any moment is larger than a preset difference value, judging that the valve has abnormal conditions.
In an alternative embodiment, the preset difference may be set according to practical situations, which is not limited herein.
In an example, the method provided by the embodiment of the invention further includes: when the valve has abnormal conditions, determining the abnormal position of the valve according to the moment when the difference value is larger than the preset difference value.
In an alternative embodiment, determining the valve anomaly location includes:
first, the opening and closing speed of the valve is obtained.
In an alternative embodiment, the opening and closing speeds of the valve include an opening speed and a closing speed.
And then, calculating the abnormal position of the valve according to the moment when the difference value is larger than the preset difference value and the switching speed of the valve.
In an alternative embodiment, the opening process and the closing process of the valve are both uniform motion under the control of the electric actuator. Therefore, the abnormal position of the valve can be determined through the moment and the switching speed corresponding to the difference value larger than the preset difference value.
Fig. 3 is a schematic structural diagram of a valve anomaly detection system according to an exemplary embodiment. The system comprises: a current transformer 1 and a controller 2.
The current transformer 1 is used for acquiring a driving current curve of the electric actuator in the process of driving the valve switch.
And the controller 2 is used for carrying out abnormality detection on the valve according to the driving current curve and the preset current curve to obtain a valve abnormality detection result.
In an alternative embodiment, the controller 2 may employ a SCADA system or an expert system, etc., without specific limitation.
In an example, the system further includes a communication transmitting device and a communication receiving device.
And the communication transmitting equipment is used for receiving the driving current curve in the current transformer and transmitting the driving current curve to the communication receiving equipment.
And a communication receiving device for transmitting the received driving current curve to the controller 2.
Illustratively, the communication transmitting device may employ a Long Range Radio (LoRa) communication chip with an analog interface, and the communication receiving device may employ a LoRa receiver.
In an example, the system further includes a memory.
The memory is connected with the communication transmitting device and is used for storing the driving current curve.
The controller 2 is further configured to update the preset current curve according to the driving current curve within the preset time period.
In an alternative embodiment, the historical current profile may change over the duration of use of the valve. Therefore, the preset current curve can also be obtained through the continuously updated historical current curve, namely, the preset current curve is not fixed and is updated in real time along with the driving current curve along with the change of the environmental working condition and the like, so that the abnormality detection result obtained according to the preset current curve is more accurate.
Fig. 4 is a schematic view of the installation inside an explosion proof junction box. Taking a natural gas transmission station as an example, the state control of the electric actuating mechanism is completed through an SCADA system. The power lines of the on-site electric actuating mechanism are connected with the electric actuating mechanism through connecting terminals arranged on the skid-mounted explosion-proof junction box, then through equipment removing terminals in the explosion-proof junction box, and are connected with the control room through control room removing terminals in the explosion-proof junction box. And selecting one power supply current (W current) in the electric valve power supply to be detected, installing a current transformer, outputting a 4-20mA current signal by the current transformer according to the magnitude of the induced current, determining a driving current curve according to the current signal, and transmitting (transmitting) the received analog signal by using a LoRa communication module with an analog interface. In the explosion-proof junction box, a power supply for converting AC220v into DC5v is also included.
In fig. 5, the control room is equipped with a LoRa signal receiving device that feeds the received analog signal into the AI module of the PLC. And a loading pattern system in the PLC reads the data of the PLC register and records the change value of the driving current signal in a history database through the switch. If the device output torque becomes large due to jamming or the like of a valve on site, the voltage U is unchanged according to the power p=ui, and the driving circuit I increases with an increase of P. The driving current required by the electric actuating mechanism can also change correspondingly, and the W-term current detected by the current transformer can be increased.
The linear distance between the installation position of the explosion-proof junction box and the control room is not more than 500m, and the number of junction boxes for deploying the LoRa remote transmission device is generally 5-8, and the field for equipment arrangement is open and free from electromagnetic and current interference. The selected LoRa communication transmitting module can completely meet the requirements of on-site working conditions. Illustratively, the performance index of the LoRa communication transmission module is: maximum line of sight distance 2800 meters; debugging-free 3.3V-8V wide voltage range power supply; an analog semaphore signal interface; the emission current is less than or equal to 130mA, the receiving current is less than or equal to 17.8mA, the emission dormancy current is less than or equal to 5uA; operating temperature-40 ℃ to 80 ℃, operating humidity 10% to 90% relative humidity.
According to the embodiment of the invention, a wireless transmission mode is adopted, so that a cable trench does not need to be excavated for laying communication wires. The data enter the SCADA system through wireless remote transmission, and the abnormality of the valve is judged by analyzing the change curve of the driving current. And the valve jam and other anomalies are pre-warned, so that safety production accidents are avoided. As the remote transmission device is additionally arranged, the remote transmission device is small in modification and low in cost, can be directly arranged on a production site, and does not need to excavate and lay communication cables. Has practical use significance in unmanned and unattended production places.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is merely exemplary of embodiments of the present invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
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| CN202310887143.8A CN116677815B (en) | 2023-07-18 | 2023-07-18 | Valve abnormality detection method, system, computer equipment and medium |
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| CN202310887143.8A CN116677815B (en) | 2023-07-18 | 2023-07-18 | Valve abnormality detection method, system, computer equipment and medium |
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| CN116677815B true CN116677815B (en) | 2024-11-08 |
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| CN118346810B (en) * | 2024-06-16 | 2024-11-29 | 温州格鲁仕流体设备有限公司 | Control method, device, computer and storage medium of hard-sealed ball valve |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987414A (en) * | 2019-12-27 | 2020-04-10 | 广州燃气集团有限公司 | System and method for valve detection and performance evaluation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE1286597B (en) * | 1966-09-13 | 1969-01-09 | Licentia Gmbh | Arrangement to protect transmitter tubes |
| JP4035585B2 (en) * | 2002-06-13 | 2008-01-23 | 株式会社山武 | Abnormality diagnosis device |
| CN201615280U (en) * | 2009-12-08 | 2010-10-27 | 项晓明 | Non-invasive intelligent valve electric actuator |
| KR101040133B1 (en) * | 2010-12-30 | 2011-06-09 | 민성기 | Valve actuator control system |
| CN110617362A (en) * | 2019-09-11 | 2019-12-27 | 福建福清核电有限公司 | Method for detecting state of electric valve |
| CN112455369A (en) * | 2020-11-30 | 2021-03-09 | 中国第一汽车股份有限公司 | Water valve fault processing method and device, vehicle and storage medium |
| CN115235754A (en) * | 2022-08-25 | 2022-10-25 | 马鞍山钢铁股份有限公司 | A method and system for monitoring abnormality of proportional valve for hydraulic displacement equipment control |
| CN115978723A (en) * | 2022-12-23 | 2023-04-18 | 珠海格力电器股份有限公司 | Method and device for determining abnormal closing of valve of air conditioner outdoor unit and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110987414A (en) * | 2019-12-27 | 2020-04-10 | 广州燃气集团有限公司 | System and method for valve detection and performance evaluation |
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