CN111350859A - Device and method for detecting state of electric regulating valve - Google Patents
Device and method for detecting state of electric regulating valve Download PDFInfo
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- CN111350859A CN111350859A CN201811579411.5A CN201811579411A CN111350859A CN 111350859 A CN111350859 A CN 111350859A CN 201811579411 A CN201811579411 A CN 201811579411A CN 111350859 A CN111350859 A CN 111350859A
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- 238000006073 displacement reaction Methods 0.000 claims description 24
- 238000004458 analytical method Methods 0.000 claims description 8
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- 230000015556 catabolic process Effects 0.000 claims description 6
- 238000006731 degradation reaction Methods 0.000 claims description 6
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- 238000006243 chemical reaction Methods 0.000 claims description 4
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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
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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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
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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Abstract
The device and the method belong to the field of state detection of electric regulating valves, and particularly relate to a device and a method for detecting the state of an electric regulating valve. At present, the state performance information of the electric regulating valve is rarely known, the phenomena of mistaken repair, missed repair, over repair and the like exist, and the phenomenon that the operation of a nuclear power plant causes great potential safety hazard due to human errors cannot be avoided. The sensor unit of the device is connected with the signal detection unit, the signal detection unit and the control signal output unit are connected with the data processing unit, and the data processing unit is connected with the upper computer through the Ethernet. The state detection method comprises the following steps: the method comprises the following steps: checking a signal; step two: collecting data; step three: analyzing a data part; step four: analyzing the data integrally; step five: and (6) completing the test. The comprehensive performance of the electric control valve is diagnosed and tested during the outage period, and meanwhile, the state performance of the electric control valve after maintenance is verified, so that human errors are effectively avoided.
Description
Technical Field
The patent belongs to the field of nuclear power station maintenance, and particularly relates to a device and a method for detecting the state of an electric regulating valve.
Background
In a nuclear power plant, serious safety accidents and economic losses are caused by the failure of the adjusting performance and the failure of a switch of one electric regulating valve, and the electric regulating valve is the most concerned valve of the nuclear power plant. At present, most of nuclear power plants adopt conventional detection, periodic maintenance, part replacement or integral replacement to carry out preventive maintenance on the nuclear power plants, and then corrective maintenance (mainly disassembly maintenance) is carried out after obvious faults are found, so that the state performance information of the electric regulating valve is known very little, the phenomena of mistaken maintenance, missed maintenance, overhauled maintenance and the like exist, and human errors cannot be avoided, so that great potential safety hazards are caused to the operation of the nuclear power plants.
The invention mainly aims at the problems, provides a state detection device and a state detection method for an electric control valve, and aims to diagnose and test the comprehensive performance of the electric control valve during the shutdown period on the premise that the valve is not disassembled and disassembled, extract relevant characteristic parameters, comprehensively and accurately analyze the performance state of the electric control valve, guide subsequent maintenance work (namely state maintenance), verify the state performance of the electric control valve after maintenance and effectively avoid human errors. In addition, through accumulation and analysis of state data of the electric regulating valve, the degradation trend can be analyzed, maintenance work is arranged before the fault occurs, related accidents and loss are avoided, and the state management level of the electric regulating valve and the safe and economic operation index of a nuclear power plant are improved.
Disclosure of Invention
The purpose is as follows:
the invention aims to provide a state detection device and a state detection method for an electric regulating valve, which are used for diagnosing and testing the comprehensive performance of the electric regulating valve during the shutdown period on the premise of no disassembly and disintegration of the valve, extracting relevant characteristic parameters, comprehensively and accurately analyzing the performance state of the electric regulating valve, guiding subsequent maintenance work (namely state maintenance), and simultaneously verifying the state performance of the electric regulating valve after maintenance, thereby effectively avoiding human errors. In addition, through accumulation and analysis of state data of the electric regulating valve, the degradation trend can be analyzed, the 'invisible' fault of the electric regulating valve can be found in advance, maintenance work is arranged before the fault occurs, related accidents and loss are avoided, and the state management level of the electric regulating valve and the safe and economic operation index of a nuclear power plant are improved.
The technical scheme is as follows:
the technical scheme of the invention is as follows: the device comprises a sensor unit, wherein the sensor unit is connected with a signal detection unit, the signal detection unit and a control signal output unit are connected with a data processing unit, the data processing unit is connected with an upper computer through Ethernet or WIFI, the device also comprises a power supply module and a management unit, the power supply module and the management unit are connected with the sensor unit, the signal detection unit, the control signal output unit and the data processing unit and provide direct-current power supply for the sensor unit, the signal detection unit, the control signal output unit and the data processing unit, and meanwhile, the power supply module and the management unit are communicated with the data processing unit through serial ports.
The sensor unit comprises a current sensor, a voltage sensor, a switching value sensor, a displacement sensor, a thrust sensor and a torque sensor.
The signal detection unit comprises a power detection unit, a logic signal detection unit, a displacement signal detection unit, a strain signal detection unit and an opening signal detection unit.
The control signal output unit comprises an analog control signal and a pulse control signal.
The current sensor and the voltage sensor are respectively connected with a current signal acquisition port and a voltage signal acquisition port of the power detection unit, the switching value sensor is connected with the logic signal detection unit, the displacement sensor is connected with the displacement signal detection unit, and the thrust sensor and the torque sensor are connected with corresponding ports of the strain signal detection unit.
During diagnosis and test, the current sensor is arranged on a power supply input cable of the electric actuating mechanism in a clamp type; the voltage sensor is arranged at the power supply input port of the electric actuating mechanism and is correspondingly conducted with the point to point; the switching value sensor is arranged on a switching contact of the electric actuating mechanism or the adjusting type electric control box and is correspondingly contacted and conducted with the point-to-point; the displacement sensor moving part is arranged on the valve rod and keeps parallel and synchronous action with the valve rod, and the thrust sensor is arranged on the valve rod in a caliper type; the torque sensor is fixedly arranged on the polished rod part of the valve rod in a surface mounting mode by using special glue; the opening signal detection unit is connected with an opening feedback signal contact in the adjusting electric control box and used for acquiring a valve opening signal; the analog control signal and the pulse control signal are connected to the control signal input end of the adjusting type electric cabinet.
A method for detecting the state of an electric regulating valve comprises the following steps:
the method comprises the following steps: signal verification
1. According to the requirements of online diagnosis and test, control signals are output to corresponding ports of the adjusting type electric control box, driving connection between the adjusting type electric control box and the electric actuating mechanism is established, sensor units are installed, and the sensors are mutually independent and can be selectively installed;
2. and through the detection of the opening degree signal, the opening degree feedback is calibrated, and whether the output signal of the opening degree feedback module is normal or not and whether the setting corresponds to the actual stroke or not are analyzed.
Step two: data acquisition
1. After the opening signal is checked, data acquisition is carried out, the installed sensor unit and the valve opening feedback signal are correspondingly output to the signal detection unit, the signal detection unit carries out signal conditioning and then outputs the signal to the data processing unit, and the data processing unit carries out analog-to-digital conversion on the signal and then sends the signal to upper computer software;
2. when the electric regulating valve acts, parameters such as current/voltage, switching value, displacement, thrust/torque, opening degree and the like are acquired through the sensor unit, and the parameters are singly or combined in upper computer software to analyze the performance condition of the electric regulating valve in a single item and in a comprehensive manner.
Step three: partial analysis of data
1. Aiming at the alternating current electric actuating mechanism, the effective value and the phase difference of current/voltage can be calculated through the collected current and voltage, and then the apparent power, the active power, the power factor and the like of the alternating current motor are obtained. For a direct current electric actuator, the current/voltage average value, power and the like can be calculated through the collected current and voltage. Whether the electric actuating mechanism is normal or not, whether faults such as overload, unbalanced action, aging abrasion, poor lubrication and the like exist or not are analyzed, and the load condition of the valve can be reflected;
2. by collecting the action condition of the switching value, combining an action logic diagram in upper computer software, and analyzing whether the actions of a torque switch, a limit switch, a bypass switch and an indicator light switch of the electric regulating valve are normal, whether the logic time sequence and the time interval are correct, the mechanical action condition of each switch contact, the contact conduction condition and the like;
3. the overall action performance of the valve is reflected by collecting the displacement of the valve, and whether the stroke distance is set properly, whether the stroke time meets the system operation requirement, whether the clamping stagnation fault exists during the action of the valve and the like are judged;
4. analyzing basic error, return difference, rated travel deviation, static dead zone and other adjusting performance parameters of the electric adjusting valve through travel-control signal synthesis test curves and upper computer analysis software, analyzing action response characteristics, inertia characteristics and other adjusting performance parameters by combining a travel-time domain curve and a current-time domain curve, and judging whether the adjusting performance of the electric adjusting valve meets the operation requirements or not;
5. axial thrust and torque borne by the valve rod are tested by a thrust sensor (only a straight stroke action valve) and a torque sensor to obtain mechanical parameters such as valve moment switch action point thrust/torque, final sealing force, valve clack pull-out force, friction force and the like, and whether faults or risks such as internal leakage, external leakage, damage to valve components and the like exist in the valve is diagnosed and analyzed;
step four: data ensemble analysis
1. Comprehensively analyzing the performance condition of the electric regulating valve, and analyzing whether the curves and the characteristic parameters are matched with each other and whether 'invisible' faults exist or not by combining the diagnosis test parameters and the curves to obtain the performance conditions of the electric regulating valve, such as the action performance, the regulating performance, the sealing performance, the motor performance condition, the electrical control logic characteristic and the like;
2. adjusting PID and other control performance parameters, verifying whether the adjustment performance is improved or reduced, finding out the PID and other control performance parameters corresponding to the optimal adjustment performance, and providing the power plant operation party with reference;
3. and comparing the historical test parameters and curves, and analyzing the degradation trend of the electric regulating valve.
Step five: complete the test
And automatically generating a word version test report in the upper computer software, wherein the word version test report comprises parameter characteristic values, curves and single test conclusions in the test, and a comprehensive conclusion is obtained according to the test conclusions to complete the state detection test of the electric regulating valve.
Beneficial effects of the invention
On the premise that the valve is not detached and disassembled, the comprehensive performance of the electric control valve is diagnosed and tested during the outage period, relevant characteristic parameters are extracted, the performance state of the electric control valve is comprehensively and accurately analyzed, maintenance personnel are guided to adjust the valve to the optimal state, meanwhile, the state performance of the electric control valve after maintenance is verified, and human errors are effectively avoided. In addition, through accumulation and analysis of state data of the electric regulating valve, the degradation trend can be analyzed, the 'invisible' fault of the electric regulating valve can be found in advance, maintenance work is arranged before the fault occurs, related accidents and loss are avoided, and the state management level of the electric regulating valve and the safe and economic operation index of a nuclear power plant are improved.
Drawings
FIG. 1 is a schematic diagram of a system for detecting the status of an electric control valve according to the present invention
FIG. 2 is a schematic view showing the connection of the detecting device of the present invention with a valve and an electric cabinet
1. A sensor unit; 2. a signal detection unit; 3. a control signal output unit; 4. a data processing unit; 5. a power module and a management unit; 6. an upper computer; 7. a regulating type electric cabinet; 8. a valve stem; 9. an electric actuator.
Detailed Description
The following detailed description of the patent refers to the accompanying drawings and specific embodiments:
as shown in fig. 2, during the diagnostic test, the current sensor is mounted in a power supply input cable of the electric actuator 9 in a caliper manner; the voltage sensor is arranged at the power supply input port of the electric actuating mechanism 9 and is correspondingly conducted with the point to point; the switching value sensor is arranged on contacts such as a torque switch, a limit switch, a bypass switch, an indicator light switch and the like in the electric actuator 9 or the adjusting electric cabinet 7 and is correspondingly contacted and conducted with the point of the contacts; the motion part of the displacement sensor is arranged on the valve rod 8 and keeps parallel and synchronous action with the valve rod 8, the thrust sensor is arranged on the valve rod 8 in a caliper type and moves up and down along with the valve rod 8 (only a straight stroke motion valve), and the torque sensor is fixedly arranged on a polished rod part of the valve rod 8 in a patch type by using special glue and moves along with the valve rod 8; the opening signal detection unit is connected with an opening feedback signal contact in the adjusting electric cabinet 7 and used for collecting a valve opening signal (a standard electric signal); the analog control signal (or pulse control signal) is connected to the control signal input end of the regulating electric cabinet 7.
The sensor unit 1 converts mechanical and electrical characteristics of the electric control valve into a standard electrical signal, and outputs the standard electrical signal to the signal detection unit 2. The current sensor and the voltage sensor are respectively connected with a current signal acquisition port and a voltage signal acquisition port of the power detection unit, the switching value sensor is connected with the logic signal detection unit, the displacement sensor is connected with the displacement signal detection unit, and the thrust sensor and the torque sensor are connected with corresponding ports of the strain signal detection unit.
The signal detection unit 2 conditions the received output signal of the sensor unit 1 and outputs the conditioned output signal to the data processing unit 4, and the data processing unit 4 performs analog-to-digital (i.e., A/D) conversion on the conditioned output signal.
The control signal output unit 3 can output two types of control signals, namely an analog control signal and a pulse control signal, select and set in the upper computer 6, and then output the control signals to the adjusting type electric cabinet after being processed in the data processing unit 4.
The power module and the management unit 5 are respectively connected with the sensor unit 1, the signal detection unit 2, the control signal output unit 3 and the data processing unit 4, and provide direct-current power for the sensor unit, meanwhile, the power module and the management unit 5 are communicated with the data processing unit 4 through a serial port and send battery electric quantity information, charging and discharging information, abnormal conditions and the like to the data processing unit 4, and the data processing unit 4 sends charging and discharging instructions to the power module and the management unit 5.
The data processing unit 4 is connected with the upper computer 6 through Ethernet or WIFI, the data processing unit 4 sends collected parameter information such as electromechanical characteristics of the electric control valve, battery condition information and the like to the upper computer 6 software, the upper computer 6 software displays, analyzes, processes, stores, gives an abnormal alarm, tests reports and the like to various signals, and meanwhile, the upper computer 6 sends an instruction to the data processing unit 4 to control the starting, stopping and the like of information collection.
The sensor unit 1 includes a current sensor, a voltage sensor, a switching value sensor, a displacement sensor, a thrust sensor, and a torque sensor.
The signal detection unit 2 comprises a power detection unit, a logic signal detection unit, a displacement signal detection unit, a strain signal detection unit and an opening signal detection unit.
The control signal output unit 3 includes an analog control signal and a pulse control signal.
The current sensor and the voltage sensor are respectively connected with a current signal acquisition port and a voltage signal acquisition port of the power detection unit, the switching value sensor is connected with the logic signal detection unit, the displacement sensor is connected with the displacement signal detection unit, and the thrust sensor and the torque sensor are connected with corresponding ports of the strain signal detection unit.
During the diagnosis test, the current sensor is arranged on a power supply input cable of the electric actuating mechanism 9 in a clamp type; the voltage sensor is arranged at the power supply input port of the electric actuating mechanism 9 and is correspondingly conducted with the point to point; the switching value sensor is arranged on contacts such as a torque switch, a limit switch, a bypass switch, an indicator light switch and the like in the electric actuator 9 or the adjusting electric cabinet 7 and is correspondingly contacted and conducted with the point of the contacts; the motion part of the displacement sensor is arranged on the valve rod 8 and keeps parallel and synchronous action with the valve rod 8, the thrust sensor is arranged on the valve rod 8 in a caliper type and moves up and down along with the valve rod 8 (only a straight stroke motion valve), and the torque sensor is fixedly arranged on a polished rod part of the valve rod in a patch type by using special glue and moves along with the valve rod 8; the opening signal detection unit is connected with an opening feedback signal contact in the adjusting electric cabinet 7 and used for collecting a valve opening signal (a standard electric signal); the analog control signal (or pulse control signal) is connected to the control signal input end of the regulating electric cabinet 7.
As shown in fig. 1, a method for detecting the state of an electric control valve includes the following steps:
the method comprises the following steps: signal verification
1. According to the requirements of online diagnosis and test, control signals are output to corresponding ports of the adjusting type electric control box, driving connection between the adjusting type electric control box and the electric actuating mechanism is established, sensor units are installed, and the sensors are mutually independent and can be selectively installed;
2. and through the detection of the opening degree signal, the opening degree feedback is calibrated, and whether the output signal of the opening degree feedback module is normal or not and whether the setting corresponds to the actual stroke or not are analyzed.
Step two: data acquisition
1. After the opening signal is checked, data acquisition is carried out, the installed sensor unit and the valve opening feedback signal are correspondingly output to the signal detection unit, the signal detection unit carries out signal conditioning and then outputs the signal to the data processing unit, and the data processing unit carries out analog-to-digital conversion on the signal and then sends the signal to upper computer software;
2. when the electric regulating valve acts, parameters such as current/voltage, switching value, displacement, thrust/torque, opening degree and the like are acquired through the sensor unit, and the parameters are singly or combined in upper computer software to analyze the performance condition of the electric regulating valve in a single item and in a comprehensive manner.
Step three: partial analysis of data
1. Aiming at the alternating current electric actuating mechanism, the effective value and the phase difference of current/voltage can be calculated through the collected current and voltage, and then the apparent power, the active power, the power factor and the like of the alternating current motor are obtained. For a direct current electric actuator, the current/voltage average value, power and the like can be calculated through the collected current and voltage. Whether the electric actuating mechanism is normal or not, whether faults such as overload, unbalanced action, aging abrasion, poor lubrication and the like exist or not are analyzed, and the load condition of the valve can be reflected;
2. by collecting the action condition of the switching value, combining an action logic diagram in upper computer software, and analyzing whether the actions of a torque switch, a limit switch, a bypass switch and an indicator light switch of the electric regulating valve are normal, whether the logic time sequence and the time interval are correct, the mechanical action condition of each switch contact, the contact conduction condition and the like;
3. the overall action performance of the valve is reflected by collecting the displacement of the valve, and whether the stroke distance is set properly, whether the stroke time meets the system operation requirement, whether the clamping stagnation fault exists during the action of the valve and the like are judged;
4. analyzing basic error, return difference, rated travel deviation, static dead zone and other adjusting performance parameters of the electric adjusting valve through travel-control signal synthesis test curves and upper computer analysis software, analyzing action response characteristics, inertia characteristics and other adjusting performance parameters by combining a travel-time domain curve and a current-time domain curve, and judging whether the adjusting performance of the electric adjusting valve meets the operation requirements or not;
5. axial thrust and torque borne by the valve rod are tested by a thrust sensor (only a straight stroke action valve) and a torque sensor to obtain mechanical parameters such as valve moment switch action point thrust/torque, final sealing force, valve clack pull-out force, friction force and the like, and whether faults or risks such as internal leakage, external leakage, damage to valve components and the like exist in the valve is diagnosed and analyzed;
step four: data ensemble analysis
1. Comprehensively analyzing the performance condition of the electric regulating valve, and analyzing whether the curves and the characteristic parameters are matched with each other and whether 'invisible' faults exist or not by combining the diagnosis test parameters and the curves to obtain the performance conditions of the electric regulating valve, such as the action performance, the regulating performance, the sealing performance, the motor performance condition, the electrical control logic characteristic and the like;
2. adjusting PID and other control performance parameters, verifying whether the adjustment performance is improved or reduced, finding out the PID and other control performance parameters corresponding to the optimal adjustment performance, and providing the power plant operation party with reference;
3. and comparing the historical test parameters and curves, and analyzing the degradation trend of the electric regulating valve.
Step five: complete the test
And automatically generating a word version test report in the upper computer software, wherein the word version test report comprises parameter characteristic values, curves and single test conclusions in the test, and a comprehensive conclusion is obtained according to the test conclusions to complete the state detection test of the electric regulating valve.
Claims (10)
1. An electric regulator valve state detection device comprising: sensor unit, signal detection unit, control signal output unit, data processing unit and host computer, its characterized in that: the sensor unit is connected with the signal detection unit; the signal detection unit and the control signal output unit are connected with the data processing unit, and the data processing unit is connected with the upper computer through Ethernet or WIFI; the system also comprises a power module and a management unit which are connected with the sensor unit, the signal detection unit, the control signal output unit and the data processing unit and provide a direct-current power supply for the sensor unit, and meanwhile, the power module and the management unit are communicated with the data processing unit through serial ports.
2. The electrical regulator valve state detecting device according to claim 1, wherein: the sensor unit comprises a current sensor, a voltage sensor, a switching value sensor, a displacement sensor, a thrust sensor and a torque sensor; the signal detection unit comprises a power detection unit, a logic signal detection unit, a displacement signal detection unit, a strain signal detection unit and an opening signal detection unit; the control signal output unit comprises an analog control signal and a pulse control signal.
3. The electrical regulator valve state detecting device according to claim 2, wherein: the current sensor and the voltage sensor are respectively connected with a current signal acquisition port and a voltage signal acquisition port of the power detection unit, the switching value sensor is connected with the logic signal detection unit, the displacement sensor is connected with the displacement signal detection unit, and the thrust sensor and the torque sensor are connected with corresponding ports of the strain signal detection unit.
4. The electrical regulator valve state detecting device according to claim 2, wherein: the current sensor is arranged on a power supply input cable of the electric actuating mechanism in a clamping manner; the voltage sensor is arranged at the power supply input port of the electric actuating mechanism and is correspondingly conducted with the point to point; the switching value sensor is arranged on a switching contact of the electric actuating mechanism or the adjusting type electric control box and is correspondingly contacted and conducted with the point-to-point; the displacement sensor moving part is arranged on the valve rod and keeps parallel and synchronous action with the valve rod, and the thrust sensor is arranged on the valve rod in a caliper type; the torque sensor is fixedly arranged on the polished rod part of the valve rod in a surface mounting mode by using special glue; the opening signal detection unit is connected with an opening feedback signal contact in the adjusting electric control box and used for acquiring a valve opening signal; the analog control signal and the analog control signal are connected to a control signal input end of the adjusting type electric cabinet.
5. A method for detecting the state of an electric regulating valve is characterized in that: the method comprises the following steps: the method comprises the following steps: checking a signal; step two: data acquisition: step three: analyzing a data part; step four: analyzing the data integrally; step five: and (6) completing the test.
6. The electrical regulator valve state detection method according to claim 5, characterized in that: the first step is as follows: the signal verification specifically comprises the following steps: (1) according to the requirements of online diagnosis and test, control signals are output to corresponding ports of the adjusting type electric control box, driving connection between the adjusting type electric control box and the electric actuating mechanism is established, sensor units are installed, and the sensors are mutually independent and can be selectively installed; (2) and through the detection of the opening degree signal, the opening degree feedback is calibrated, and whether the output signal of the opening degree feedback module is normal or not and whether the setting corresponds to the actual stroke or not are analyzed.
7. The electrical regulator valve state detection method according to claim 5, characterized in that: the second step is that: the data acquisition method specifically comprises the following steps: (1) after the opening signal is checked, data acquisition is carried out, the installed sensor unit and the valve opening feedback signal are correspondingly output to the signal detection unit, the signal detection unit carries out signal conditioning and then outputs the signal to the data processing unit, and the data processing unit carries out analog-to-digital conversion on the signal and then sends the signal to upper computer software; (2) when the electric regulating valve acts, parameters such as current/voltage, switching value, displacement, thrust/torque, opening degree and the like are acquired through the sensor unit, and the parameters are singly or combined in upper computer software to analyze the performance condition of the electric regulating valve in a single item and in a comprehensive manner.
8. The electrical regulator valve state detection method according to claim 5, characterized in that: the third step is that: and (3) partial data analysis, which specifically comprises the following steps:
(1) aiming at the alternating current electric actuating mechanism, the effective value and the phase difference of current/voltage can be calculated through the collected current and voltage, and then the apparent power, the active power and the power factor of the alternating current motor are obtained; for the direct current electric actuator, the average value and power of current/voltage can be calculated through the collected current and voltage; whether the electric actuating mechanism is normal or not, whether faults such as overload, unbalanced action, aging abrasion, poor lubrication and the like exist or not are analyzed, and the load condition of the valve can be reflected;
(2) by collecting the action condition of the switching value, combining an action logic diagram in upper computer software, and analyzing whether the actions of a torque switch, a limit switch, a bypass switch and an indicator light switch of the electric regulating valve are normal, whether the logic time sequence and the time interval are correct, the mechanical action condition of each switch contact, the contact conduction condition and the like;
(3) the overall action performance of the valve is reflected by collecting the displacement of the valve, and whether the stroke distance is set properly, whether the stroke time meets the system operation requirement, whether the clamping stagnation fault exists during the action of the valve and the like are judged;
(4) analyzing basic error, return difference, rated travel deviation, static dead zone and other adjusting performance parameters of the electric adjusting valve through travel-control signal synthesis test curves and upper computer analysis software, analyzing action response characteristics, inertia characteristics and other adjusting performance parameters by combining a travel-time domain curve and a current-time domain curve, and judging whether the adjusting performance of the electric adjusting valve meets the operation requirements or not;
(5) the axial thrust and the torque applied to the valve rod are tested by the thrust sensor and the torque sensor, so that the mechanical parameters such as the thrust/torque of a valve moment switch action point, the final sealing force, the valve clack pull-out force, the friction force and the like are obtained, and whether the valve has faults or risks such as internal leakage, external leakage, damage to valve components and the like is diagnosed and analyzed.
9. The electrical regulator valve state detection method according to claim 5, characterized in that: the fourth step is that: the data integral analysis specifically comprises the following steps:
(1) comprehensively analyzing the performance condition of the electric regulating valve, and analyzing whether the curves and the characteristic parameters are matched with each other and whether 'invisible' faults exist or not by combining the diagnosis test parameters and the curves to obtain the performance conditions of the electric regulating valve, such as the action performance, the regulating performance, the sealing performance, the motor performance condition, the electrical control logic characteristic and the like;
(2) adjusting PID and other control performance parameters, verifying whether the adjustment performance is improved or reduced, finding out the PID and other control performance parameters corresponding to the optimal adjustment performance, and providing the power plant operation party with reference;
(3) and comparing the historical test parameters and curves, and analyzing the degradation trend of the electric regulating valve.
10. The electrical regulator valve state detection method according to claim 5, characterized in that: the fifth step is as follows: the test is completed, and the method specifically comprises the following steps: and automatically generating a word version test report in the upper computer software, wherein the word version test report comprises parameter characteristic values, curves and single test conclusions in the test, and a comprehensive conclusion is obtained according to the test conclusions to complete the state detection test of the electric regulating valve.
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| CN201811579411.5A CN111350859A (en) | 2018-12-21 | 2018-12-21 | Device and method for detecting state of electric regulating valve |
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| CN201811579411.5A CN111350859A (en) | 2018-12-21 | 2018-12-21 | Device and method for detecting state of electric regulating valve |
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| CN201811579411.5A Pending CN111350859A (en) | 2018-12-21 | 2018-12-21 | Device and method for detecting state of electric regulating valve |
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| CN111720619A (en) * | 2020-07-30 | 2020-09-29 | 中国科学院合肥物质科学研究院 | System for automatically monitoring states of gate valve and Shutter |
| CN112683521A (en) * | 2020-12-10 | 2021-04-20 | 中广核工程有限公司 | Online monitoring and fault diagnosis system for state of electric valve of nuclear power plant |
| CN112728417A (en) * | 2020-12-25 | 2021-04-30 | 中核武汉核电运行技术股份有限公司 | Online diagnosis device and method for main steam isolation valve of nuclear power plant |
| CN112947051A (en) * | 2020-12-23 | 2021-06-11 | 苏州汉霄等离子体科技有限公司 | Control method and device for radio frequency plasma powder making equipment, storage medium and electronic equipment |
| CN113432863A (en) * | 2021-06-02 | 2021-09-24 | 上海自动化仪表有限公司 | Valve health state detection and diagnosis device and method |
| CN113483999A (en) * | 2021-06-15 | 2021-10-08 | 中广核核电运营有限公司 | Valve performance testing method and valve performance testing device |
| CN113866625A (en) * | 2021-10-20 | 2021-12-31 | 浙江工业大学 | Method for detecting opening and closing amount state of electric switch valve |
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| CN113483999A (en) * | 2021-06-15 | 2021-10-08 | 中广核核电运营有限公司 | Valve performance testing method and valve performance testing device |
| CN113866625A (en) * | 2021-10-20 | 2021-12-31 | 浙江工业大学 | Method for detecting opening and closing amount state of electric switch valve |
| CN113866625B (en) * | 2021-10-20 | 2024-04-02 | 浙江工业大学 | Method for detecting state of switching value of electric switch valve |
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