CN116046294A - Nuclear power station hydraulic electromagnetic valve tightness detection system and method - Google Patents
Nuclear power station hydraulic electromagnetic valve tightness detection system and method Download PDFInfo
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- CN116046294A CN116046294A CN202211501708.6A CN202211501708A CN116046294A CN 116046294 A CN116046294 A CN 116046294A CN 202211501708 A CN202211501708 A CN 202211501708A CN 116046294 A CN116046294 A CN 116046294A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The application discloses a system and a method for detecting tightness of a hydraulic electromagnetic valve of a nuclear power station, wherein the detection method comprises an upper computer, a test bench, a hydraulic system, a data acquisition card and a driving control card, wherein the upper computer is connected with the test bench; the hydraulic system is placed on the test bench; the data acquisition card and the drive control card are respectively connected with the hydraulic system; the hydraulic system further comprises a test base, a motor, a sensor and an oil tank, wherein the test base is used for installing a tested electromagnetic valve, and the test base comprises a hydraulic pipeline and is connected with the motor and the oil tank to form a test loop; the motor is used for outputting hydraulic oil with certain pressure; the sensor comprises a pressure sensor, a temperature sensor and a liquid level sensor, and the voltage in the test loop, the temperature of the oil tank and the liquid level of the oil tank are respectively measured. According to the system and the method for detecting the tightness of the hydraulic electromagnetic valve of the nuclear power station, which are disclosed by the embodiment of the application, the operation is simple, the detection efficiency and the detection precision are high, and the reliability of the electromagnetic valve can be improved.
Description
Technical Field
The application relates to the technical field of electromagnetic valve measurement and control, in particular to a system and a method for detecting tightness of a hydraulic electromagnetic valve of a nuclear power station.
Background
The nuclear power plant steam turbine consists of a high-pressure cylinder, a low-pressure cylinder and a plurality of air inlet pipelines. Each intake line is equipped with 1 GSE shut-off valve and one GRE regulator valve. The GSE stop valve is provided with two tripping electromagnetic valves and 1 switching electromagnetic valve, and when the GSE stop valve operates normally, the tripping electromagnetic valve is electrically excited, and the switching electromagnetic valve is powered off and is controlled to be opened by high-pressure hydraulic oil. When the turbine suddenly jumps, the electromagnetic valve of the jump machine is powered off, so that the valve is quickly closed. The solenoid valve on the GSE stop valve is mainly used for protecting the safety of the steam turbine. The GRE regulating valve and the GSE stop valve have the failure faults of the electromagnetic valve caused by the repeated jumping, so that the normal functions of the valve are directly affected, if the electromagnetic valve leaks, the pressure cannot be kept, the valve is abnormally closed, the oil pump is frequently operated, the safe operation of a unit is seriously affected, and even a certain accident is caused.
Therefore, the nuclear power station checks the electromagnetic valve on the air inlet valve of the GSE/GRE system steam turbine during overhaul, on one hand, conventional check is carried out, the insulation value and the continuity resistance value of the electromagnetic valve are tested, the fault standard of the electromagnetic valve is established according to experience, and once the tested electromagnetic valve has deviation, the electromagnetic valve is replaced; on the other hand, the electromagnetic valve is replaced regularly, so that the electromagnetic valve is prevented from being broken down, the maintenance cost is increased, the resource utilization rate is not high, and meanwhile, no effective means are provided for detecting equipment faults and analyzing reasons. The electromagnetic valve realizes the on-off of a liquid path or the change of the liquid flow direction in the control system, and plays different roles in cooperation with different control systems, so that the tightness of the electromagnetic valve is a key factor affecting the reliability of the control system under the real load working condition. Therefore, development of a special hydraulic electromagnetic valve tightness testing system is necessary.
The invention discloses an automobile electromagnetic valve sealing, pressure-resistant and opening pressure testing device, which comprises a testing valve block and a control system, wherein the testing valve block comprises a valve block main body, at least one testing flow channel is arranged in the valve block main body, two ends of the testing flow channel are respectively communicated with a side opening on the side wall of the testing valve block and a bottom opening at the bottom, an electromagnetic valve to be tested is inserted and installed on each testing flow channel, an electromagnetic valve coil is sleeved on the outer side of the electromagnetic valve, the electromagnetic valve coil is connected with a power supply, the side opening communicated with the testing flow channel is connected with a hydraulic testing machine, the bottom opening is connected with a brake caliper, and the control system comprises a pressure sensor, a control chip circuit module and an upper computer module. The invention can test the tightness, pressure resistance and opening pressure of the electromagnetic valve under the loaded condition, so that the relevant parameters of the electromagnetic valve can be verified and timely improved in the early-stage research and development design process of the electromagnetic valve, and the response rapidity of the electromagnetic valve is improved. However, the technical scheme belongs to limit test, can damage the tested electromagnetic valve, is complex to operate, is inflexible, cannot test a sealing performance curve, and cannot play back data.
Disclosure of Invention
The object of the present application is to solve at least to some extent one of the technical problems described above.
Therefore, the first object of the invention is to provide a system for detecting the tightness of the hydraulic electromagnetic valve of the nuclear power station, which has stable and reliable system operation, simple operation, high detection efficiency and detection precision and can improve the reliability of the electromagnetic valve.
The second aim of the invention is to provide a method for detecting the tightness of the hydraulic electromagnetic valve of the nuclear power station.
In order to achieve the above purpose, an embodiment of a first aspect of the present application provides a system for detecting tightness of a hydraulic electromagnetic valve of a nuclear power station, which includes an upper computer, a test board, a hydraulic system, a data acquisition card and a driving control card, wherein the upper computer is connected with the test board; the hydraulic system is placed on the test bench; the data acquisition card and the driving control card are respectively connected with the hydraulic system; the hydraulic system further comprises a test base, a motor, a sensor and an oil tank, wherein the test base is used for installing a tested electromagnetic valve, and the test base is internally provided with a hydraulic pipeline and is connected with the motor and the oil tank to form a test loop; the motor is used for outputting hydraulic oil with certain pressure; the sensor comprises a pressure sensor, a temperature sensor and a liquid level sensor, and the voltage in the test loop, the temperature of the oil tank and the liquid level of the oil tank are measured respectively.
Optionally, the pressure sensor comprises a P-port pressure sensor and an A-port pressure sensor, the hydraulic system further comprises a P-port ball valve, an A-port ball valve, a P-port pressure instrument panel, an electric pump, a filter, a ball valve, an overflow valve and an adjusting electromagnetic valve,
the oil tank is connected with the electric pump, the electric pump is connected with the filter, the filter is connected with the ball valve, the ball valve is respectively connected with the overflow valve and the regulating electromagnetic valve, the overflow valve is connected with the oil tank, and the regulating electromagnetic valve is respectively connected with the P-port pressure sensor, the P-port pressure instrument panel and the P-port ball valve; the P-port ball valve is connected with the P end of the tested electromagnetic valve.
Optionally, the oil tank with A mouth ball valve links to each other, A mouth ball valve respectively with A mouth pressure sensor with the A end of survey solenoid valve links to each other.
Optionally, the oil tank is connected with the T end of the tested electromagnetic valve.
Optionally, the data acquisition card is a high-precision data acquisition card, and acquires a voltage signal, a temperature signal, an oil tank liquid level signal, a filter alarm signal and an oil tank liquid level low alarm signal.
Optionally, the driving control card is connected with the tested electromagnetic valve and controls the programmable power supply of the tested electromagnetic valve to supply power.
Optionally, the driving control card is connected with the motor to control the rotating speed and the scram of the motor.
Optionally, the upper computer includes a man-machine operation interface, where the man-machine operation interface is an interface where a user interacts with the test board.
Optionally, the test pressure of the hydraulic system is 150bar.
Optionally, the upper computer and the test bench communicate data through ethernet.
According to the system for detecting the tightness of the hydraulic electromagnetic valve of the nuclear power station, the following technical effects can be achieved:
1. the system runs stably and reliably;
2. the operation is simple and convenient;
3. the detection efficiency and the detection precision are high;
4. the reliability of the electromagnetic valve is improved.
To achieve the above object, an embodiment of a second aspect of the present application provides a method for detecting tightness of a hydraulic electromagnetic valve of a nuclear power station, including:
performing a tightness detection preparation work;
starting a pressing test of the tightness test;
and starting a pressure maintaining test of the tightness test.
Optionally, performing the tightness detection preparation comprises:
running upper computer software and filling in parameters of the electromagnetic valve to be tested;
testing the continuity resistance value and the positive-negative electrode-to-ground resistance value of the tested electromagnetic valve;
and keeping the A-port ball valve of the tested electromagnetic valve closed and opening the P-port ball valve.
Optionally, initiating a crush test of the tightness test includes:
controlling the motor to be started, and starting an oil way electromagnetic valve after 2 seconds to enable the oil inlet pressure of the electromagnetic valve to be tested to reach a set value;
and when the P-port pressure of the tested electromagnetic valve is stabilized at the set value, closing the P-port ball valve of the tested electromagnetic valve.
Optionally, starting a dwell test of the tightness test, including:
closing the motor and the oil way electromagnetic valve;
drawing a pressure curve of a P port and an A port of the tested electromagnetic valve;
after a certain time t is kept, stopping drawing the curve;
executing a pressure relief command on the tested electromagnetic valve;
and calculating the leakage rate of the tested electromagnetic valve, and recording the leakage rate to a database.
The method for detecting the tightness of the hydraulic electromagnetic valve of the nuclear power station is simple to operate, high in detection efficiency and detection precision and capable of improving the reliability of the electromagnetic valve.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a hydraulic solenoid valve tightness detection system of a nuclear power plant according to one embodiment of the present application;
FIG. 2 is a schematic diagram illustrating the effects of a human-machine interface according to one embodiment of the present application;
FIG. 3 is a schematic diagram of a hydraulic system according to one embodiment of the present disclosure;
FIG. 4 is a flow chart of a method of nuclear power plant hydraulic solenoid valve leak tightness detection according to one embodiment of the present application;
FIG. 5 is a schematic illustration of a solenoid valve a tightness test playback interface;
FIG. 6 is a schematic illustration of a solenoid valve b tightness test playback interface;
FIG. 7 is a schematic diagram of seal test alarm information.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The invention is described in further detail below in connection with specific examples which are not to be construed as limiting the scope of the invention as claimed.
A nuclear power station hydraulic solenoid valve tightness detection system according to an embodiment of the present application is described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a tightness detection system of a hydraulic electromagnetic valve of a nuclear power station according to an embodiment of the present application.
As shown in fig. 1, the hydraulic solenoid valve tightness detection system of the nuclear power station includes a host computer 100, a test bench 200, a hydraulic system 300, a data acquisition card 400, and a driving control card 500.
The host computer 100 is connected to the test bench 200, and specifically, the host computer 100 and the test bench 200 perform data communication through ethernet. The hydraulic system 300 is placed on the test bench 200. The data acquisition card 400 and the drive control card 500 are respectively connected with the hydraulic system 300.
The test pressure of the hydraulic system 300 was 150bar.
The data acquisition card 400 is a high-precision data acquisition card and is used for acquiring voltage signals, temperature signals, oil tank liquid level signals, filter alarm signals and oil tank liquid level low alarm signals.
The drive control card 500 is connected with the tested electromagnetic valve 1 and controls the programmable power supply of the tested electromagnetic valve 1 to supply power. The driving control card 500 is connected with the motor 320 to control the rotation speed and sudden stop of the motor 320. Specifically, the drive control card 500 outputs a voltage to drive the motor 320, and adjusts the output hydraulic pressure of the oil pump by changing the rotation speed of the motor 320; controlling the output of a programmable power supply and adjusting the power supply voltage of the tested electromagnetic valve; the output control of the switching value mainly controls a relay to finish the work of the power supply switch of the electromagnetic valve to be tested, the motor enabling and scram control and the like.
The upper computer 100 includes a man-machine operation interface, which is an interface for a user to interact with the test bench. Specifically, the system operates in Windows environment, and the client computer installs the running program. As shown in fig. 2, the main functions of the host computer 100 include: human-computer interaction interface, measured electromagnetic valve information management, electromagnetic valve pressing test, real-time curve acquisition and display, data analysis, report output, data storage, data playback and other functions.
The hydraulic system 300 further includes a test base 310, a motor 320, a sensor 330, and an oil tank 340.
The test base 310 is used for installing the tested electromagnetic valve 1, and the test base 310 contains a hydraulic pipeline and is connected with the motor 320 and the oil tank 340 to form a test loop.
The motor 320 is used for outputting hydraulic oil with a certain pressure.
The sensor 330 includes a pressure sensor, a temperature sensor, a level sensor, and measures the voltage in the test loop, the temperature of the tank, and the tank level, respectively.
The pressure sensor further comprises a P-port pressure sensor 2 and an A-port pressure sensor 3. The hydraulic system 300 further comprises a P-port ball valve 5, an A-port ball valve 6, a P-port pressure gauge panel 4, an electric pump 7, a filter 8, a ball valve 9, an overflow valve 10 and an adjusting electromagnetic valve 11.
As shown in fig. 3, the oil tank 340 is connected to the electric pump 7, the electric pump 7 is connected to the filter 8, the filter 8 is connected to the ball valve 9, the ball valve 9 is connected to the relief valve 10 and the regulating solenoid valve 11, respectively, and the relief valve 10 is connected to the oil tank 340. The regulating electromagnetic valve 11 is respectively connected with the P-port pressure sensor 2, the P-port pressure instrument panel 4 and the P-port ball valve 5. The P-port ball valve 5 is connected with the P end of the tested electromagnetic valve 1.
The oil tank 340 is connected with the ball valve 6 with the opening A, and the ball valve 6 with the opening A is respectively connected with the pressure sensor 3 with the end A of the electromagnetic valve 1 to be tested. The oil tank 340 is connected with the T end of the tested electromagnetic valve 1.
The detection system can accurately detect the sealing state performance of the electromagnetic valve on the air inlet valve of the steam turbine of the GSE/GRE system, and provides decision basis for adjusting or maintaining the electromagnetic valve after timely finding faults. In addition, the performance of the electromagnetic valve has definite and quantifiable judgment standards, the test report is unified version without depending on experience of testers, human error is effectively avoided, and the safety operation of the air inlet valve of the steam turbine of the nuclear power plant is ensured.
According to the system for detecting the tightness of the hydraulic electromagnetic valve of the nuclear power station, the following technical effects can be achieved:
1. the system runs stably and reliably;
2. the operation is simple and convenient;
3. the detection efficiency and the detection precision are high;
4. the reliability of the electromagnetic valve is improved.
In order to achieve the above purpose, the application further provides a method for detecting the tightness of the hydraulic electromagnetic valve of the nuclear power station.
As shown in fig. 4, the method for detecting the tightness of the hydraulic electromagnetic valve of the nuclear power station comprises the following steps:
s41, performing a tightness detection preparation work.
Specifically, the preparation may include the steps of: firstly, running upper computer software and filling in parameters of a tested electromagnetic valve; then testing the continuity resistance value and the positive-negative electrode-to-ground resistance value of the tested electromagnetic valve; and keeping the A-port ball valve of the tested electromagnetic valve closed and opening the P-port ball valve.
Parameters of the solenoid valve under test may include SN code, valve type, status, oil pressure reference, etc.
S42, starting a pressing test of the tightness test.
Specifically, the motor is controlled to be started, and an oil way electromagnetic valve is started after 2 seconds, so that the oil inlet pressure of the electromagnetic valve to be tested reaches a set value; and when the P-port pressure of the tested electromagnetic valve is stabilized at the set value, closing the P-port ball valve of the tested electromagnetic valve.
S43, starting a pressure maintaining test of the tightness test.
Specifically, the motor and the oil way electromagnetic valve are closed; drawing a pressure curve of a P port and an A port of the tested electromagnetic valve; after a certain time t is kept, stopping drawing the curve; executing a pressure relief command on the tested electromagnetic valve; and calculating the leakage rate of the tested electromagnetic valve, and recording the leakage rate to a database.
A detailed description will be given below with reference to a specific embodiment.
In order to improve the reliability of a nuclear power plant steam turbine valve trip electromagnetic valve and a switching electromagnetic valve and reduce abnormal closing of the valve, the application provides an electromagnetic valve tightness detection system according to the working principle of the nuclear power plant valve, and the electromagnetic valve tightness detection system comprises a test base, a hydraulic system, an upper computer and the like. The detection system is an offline system, the tightness of the tripping electromagnetic valve and the switching electromagnetic valve is tested by simulating the real load working condition of the steam turbine system, the reliability of the electromagnetic valve is improved, and the practical application result shows that the system is stable and reliable in operation, simple in operation, high in detection efficiency and detection precision and good in use effect.
According to the actual working environment pressure of the system, the pressure of the system is set to be 150bar. The servo motor drives the oil pump to pump hydraulic oil in the oil tank, the hydraulic oil is supplied to the whole system through the filter and the one-way valve and the overflow valve, and the system controls the hydraulic pressure by adjusting the output voltage of the servo motor. And checking the digital pressure gauge, and when the pressure is stabilized at 150bar, performing tightness test on the tested electromagnetic valve. The upper computer software of the system controls the solenoid valve to be tested to be electrified and powered off according to test requirements, tests inlet pressure in real time, calculates parameters such as leakage rate and the like of the solenoid valve to be tested, judges the performance condition of the solenoid valve to be tested, and prints a standard report.
Main parts such as the hydraulic system of this application concentrate on the testboard, and main part compact structure fully considers the requirement of field test, ensures not damaging test equipment.
The specific detection process is as follows:
pressure measurement is used to test the leakage rate of the solenoid valve when it is de-energized. During the test, the pressure of the inlet side of the electromagnetic valve to be tested is kept unchanged basically, the back pressure reduction value of the electromagnetic valve to be tested is measured within the time t, and the actual leakage rate is calculated through parameters such as the pressure change value and the like.
Specifically, step S1 is first performed, and the preparation work is performed before pressing.
S11, running upper computer software, and filling parameters of the tested electromagnetic valve: SN code, valve type, status, oil pressure reference value, etc.
And S12, testing the continuity resistance value and the positive-negative electrode ground resistance value of the tested electromagnetic valve by using a universal meter, and recording the corresponding positions of the upper computer software.
S13, keeping the valve A of the tested electromagnetic valve closed, and opening the valve P (the valve P is an oil inlet).
Then, step S2 is performed to start the pressing test.
S21, the motor is controlled to be started by a program, the oil way electromagnetic valve is started after 2S, the pressure gauge is observed in real time, and the pressure of an oil inlet of the electromagnetic valve to be measured reaches a set value.
S22, checking a software interface of the upper computer, and manually closing the P-port ball valve after the P-port pressure is stable, so that the P-port pressure is kept.
And then executing step S3, and starting the pressure maintaining test.
S31, clicking an upper computer interface to execute a command of starting pressure maintaining, and automatically closing a motor and an oil way electromagnetic valve by the system.
S32, drawing pressure curves of the P port and the A port, and starting timing by a timer, wherein the system automatically records the initial oil pressure;
s33, clicking the 'end pressure maintaining' after a certain time t, stopping drawing a curve, and stopping timing;
s34, the upper computer sends a decompression command to completely release the pressure of the electromagnetic valve to be tested;
s35, the system automatically calculates the leakage rate and records the leakage rate into a database so as to facilitate subsequent data query and playback.
As can be seen from fig. 5 and 6, the solenoid valve a has a remarkable shortage of pressure maintaining capability, a reduced sealing performance, and a need for replacement treatment. The solenoid valve b does not need replacement processing.
In addition, in the process of the tightness test, the value of the upper right corner of the display interface needs to be paid attention to in real time as shown in fig. 7, and if alarm information is generated, shutdown processing is needed.
The method for detecting the tightness of the hydraulic electromagnetic valve of the nuclear power station is simple to operate, high in detection efficiency and detection precision and capable of improving the reliability of the electromagnetic valve.
The above embodiments are merely illustrative embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to apply to the present invention, and all equivalents and modifications according to the technical scheme and the inventive concept thereof are intended to be included in the scope of the present invention.
It is noted that 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.
It should be noted that in the description of the present specification, descriptions of terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Claims (14)
1. A nuclear power station hydraulic electromagnetic valve tightness detection system is characterized by comprising an upper computer, a test bench, a hydraulic system, a data acquisition card and a drive control card,
the upper computer is connected with the test bench;
the hydraulic system is placed on the test bench;
the data acquisition card and the driving control card are respectively connected with the hydraulic system;
the hydraulic system further comprises a test base, a motor, a sensor and an oil tank, wherein the test base is used for installing a tested electromagnetic valve, and the test base is internally provided with a hydraulic pipeline and is connected with the motor and the oil tank to form a test loop;
the motor is used for outputting hydraulic oil with certain pressure;
the sensor comprises a pressure sensor, a temperature sensor and a liquid level sensor, and the voltage in the test loop, the temperature of the oil tank and the liquid level of the oil tank are measured respectively.
2. The detection system of claim 1, wherein the pressure sensor comprises a port P pressure sensor and a port A pressure sensor, the hydraulic system further comprises a port P ball valve, a port A ball valve, a port P pressure gauge, an electric pump, a filter, a ball valve, a relief valve, a regulating solenoid valve,
the oil tank is connected with the electric pump, the electric pump is connected with the filter, the filter is connected with the ball valve, the ball valve is respectively connected with the overflow valve and the regulating electromagnetic valve, the overflow valve is connected with the oil tank, and the regulating electromagnetic valve is respectively connected with the P-port pressure sensor, the P-port pressure instrument panel and the P-port ball valve; the P-port ball valve is connected with the P end of the tested electromagnetic valve.
3. The detection system according to claim 2, wherein the oil tank is connected to the port a ball valve, which is connected to the port a pressure sensor and the port a of the solenoid valve under test, respectively.
4. The test system of claim 2, wherein the oil tank is connected to a T-terminal of the solenoid valve under test.
5. The detection system of claim 1, wherein the data acquisition card is a high-precision data acquisition card that acquires a voltage signal, a temperature signal, a tank level signal, a filter alarm signal, and a tank level low alarm signal.
6. The detection system according to claim 1, wherein the drive control card is connected to the solenoid valve under test and controls the programmable power supply of the solenoid valve under test.
7. The detection system of claim 1, wherein the drive control card is coupled to the motor to control rotational speed and scram of the motor.
8. The system of claim 1, wherein the host computer includes a human-machine interface, the human-machine interface being an interface for a user to interact with the test station.
9. The detection system according to claim 1, wherein the hydraulic system has a test pressure of 150bar.
10. The test system of claim 1, wherein the host computer is in data communication with the test station via ethernet.
11. The method for detecting the tightness of the hydraulic electromagnetic valve of the nuclear power station is characterized by comprising the following steps of:
performing a tightness detection preparation work;
starting a pressing test of the tightness test;
and starting a pressure maintaining test of the tightness test.
12. The inspection method according to claim 11, wherein performing the tightness inspection preparation comprises:
running upper computer software and filling in parameters of the electromagnetic valve to be tested;
testing the continuity resistance value and the positive-negative electrode-to-ground resistance value of the tested electromagnetic valve;
and keeping the A-port ball valve of the tested electromagnetic valve closed and opening the P-port ball valve.
13. The method of claim 11, wherein initiating the compression test of the tightness test comprises:
controlling the motor to be started, and starting an oil way electromagnetic valve after 2 seconds to enable the oil inlet pressure of the electromagnetic valve to be tested to reach a set value;
and when the P-port pressure of the tested electromagnetic valve is stabilized at the set value, closing the P-port ball valve of the tested electromagnetic valve.
14. The method of claim 11, wherein initiating the dwell test of the tightness test comprises:
closing the motor and the oil way electromagnetic valve;
drawing a pressure curve of a P port and an A port of the tested electromagnetic valve;
after a certain time t is kept, stopping drawing the curve;
executing a pressure relief command on the tested electromagnetic valve;
and calculating the leakage rate of the tested electromagnetic valve, and recording the leakage rate to a database.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211501708.6A CN116046294A (en) | 2022-11-28 | 2022-11-28 | Nuclear power station hydraulic electromagnetic valve tightness detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211501708.6A CN116046294A (en) | 2022-11-28 | 2022-11-28 | Nuclear power station hydraulic electromagnetic valve tightness detection system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116046294A true CN116046294A (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211501708.6A Pending CN116046294A (en) | 2022-11-28 | 2022-11-28 | Nuclear power station hydraulic electromagnetic valve tightness detection system and method |
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| CN (1) | CN116046294A (en) |
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2022
- 2022-11-28 CN CN202211501708.6A patent/CN116046294A/en active Pending
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