CN117664460A - Method for detecting cold sealing performance of pilot valve of MSR safety valve - Google Patents
Method for detecting cold sealing performance of pilot valve of MSR safety valve Download PDFInfo
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- CN117664460A CN117664460A CN202311495326.1A CN202311495326A CN117664460A CN 117664460 A CN117664460 A CN 117664460A CN 202311495326 A CN202311495326 A CN 202311495326A CN 117664460 A CN117664460 A CN 117664460A
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- 238000007789 sealing Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 53
- 230000001105 regulatory effect Effects 0.000 claims abstract description 45
- 239000007789 gas Substances 0.000 claims abstract description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 13
- 238000011156 evaluation Methods 0.000 claims abstract description 4
- 238000002955 isolation Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000007405 data analysis Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000012795 verification Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
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- Safety Valves (AREA)
Abstract
The invention relates to the field of nuclear power equipment overhaul, in particular to a method for detecting cold sealing performance of an MSR safety valve pilot valve. The detection method comprises the following steps: wrapping and sealing the pilot valve by using a sealing cover, wherein the sealing cover is respectively connected with the MSR safety valve checking device and the bubble counter; preparing a testing device; introducing nitrogen, and adjusting the reading of the second high-precision pressure gauge to the sealing test pressure of the safety valve through a manual pressure regulating valve; and recording the number of bubbles by a bubble counter, converting the gas volume leakage rate of the pilot valve according to the gas volume corresponding to the bubbles, and finally comparing the gas volume leakage rate with the pilot valve sealing performance acceptance standard to obtain a sealing performance evaluation result of the pilot valve. The invention can accurately measure the tightness of the pilot valve of the MSR safety valve.
Description
Technical Field
The invention relates to the field of nuclear power equipment overhaul, in particular to a method for detecting cold sealing performance of an MSR safety valve pilot valve.
Background
The MSR safety valve is an important device for overpressure protection of a steam-water separation reheater (MSR), and can have faults of unsealed medium leakage, opening under non-setting pressure, incomplete opening, frequency hopping, untimely closing and the like in the long-term operation process, so that the safe and stable operation of the MSR and a steam turbine generator unit is seriously influenced, and the MSR safety valve needs to be checked on line regularly.
The MSR relief valve discharges the medium and is superheated steam, and discharge flow is great, adopts the pilot operated relief valve generally. The structure and the function of the safety valve are complex, the safety valve comprises a main valve, a pilot valve, a secondary pilot valve, a booster cylinder and other parts, and the parts coordinate and cooperate with each other to orderly act according to respective action logic sequences, so that the normal work of the safety valve is ensured. The MSR safety valve pilot valve is of an open structure, and an outlet of the MSR safety valve pilot valve is communicated with the secondary pilot valve through two exhaust pipelines, and gas can leak into the air through a valve rod gap and a spring, so that the MSR safety valve pilot valve cannot be measured at an outlet of the MSR safety valve pilot valve by adopting a bubble counting method.
Disclosure of Invention
The invention aims to solve the technical problems that: the method for detecting the cold sealing performance of the MSR safety valve pilot valve can accurately measure the sealing performance of the MSR safety valve pilot valve.
The invention provides a method for detecting cold sealing performance of an MSR safety valve pilot valve, which comprises the following steps:
step one: wrapping and sealing the pilot valve by using a sealing cover, wherein the sealing cover is respectively connected with the MSR safety valve checking device and the bubble counter;
step two: adding water into a leakage medium collecting cup of the bubble counter, powering on the checking device and the bubble counter, and operating a bubble counter timer to set test time;
step three: introducing nitrogen into a gas supply system of the MSR safety valve checking device, and adjusting the reading of the second high-precision pressure gauge to the sealing test pressure of the safety valve through a manual pressure regulating valve;
step four: the air bubble counter is controlled by a data acquisition and control system of the MSR safety valve checking device, when the air bubble in the air bubble counter leakage medium collecting cup is observed to be continuously discharged at a constant speed, the counter reset button is clicked, the air bubble counter starts to count down and simultaneously records the number of discharged air bubbles, after the test is finished, the counter displays the number of leakage air bubbles recorded in the test time, the number of air bubbles leaked in the pilot valve unit time can be obtained, the gas volume leakage rate of the pilot valve is converted according to the gas volume corresponding to the air bubbles, and finally the air bubble counter is compared with the pilot valve sealing performance acceptance criterion to obtain the sealing performance evaluation result of the pilot valve.
In the second step, the water level is added to the depth of the air outlet pipe inserted into the liquid level of 12.5mm.
In the first step, a high-pressure hose is used for firmly connecting an air outlet connector checked by an MSR safety valve with a pilot valve inlet test connector, a sealing cover is sealed by an inlet flange, the pilot valve inlet test connector is arranged on the inlet flange, and stable test pressure is injected by the pilot valve inlet test connector;
a hose was used to connect the sealed-enclosure leak outlet test fitting to the bubble counter leak medium inlet.
The invention also provides an MSR safety valve checking device, which comprises: the system comprises an air supply system, a sealing performance and pressure setting system, a rapid discharge and overpressure protection system and a data acquisition and control system;
the air supply system includes: the high-pressure nitrogen cylinder is connected with the air inlet interface through a high-pressure hose;
the air inlet interface is sequentially connected with a filter and a pressure regulating valve through pipelines;
the sealing performance and pressure setting system comprises: the device comprises an isolation valve, a standard gas storage tank, a first high-precision digital pressure gauge, a manual pressure regulating valve, a second high-precision digital pressure gauge, a first switching valve, a flowmeter, a second switching valve and a gas outlet interface;
the pressure regulating valve outlet is sequentially connected with an isolation valve, a standard gas storage tank, a first high-precision digital pressure gauge and a manual pressure regulating valve;
the manual pressure regulating valve outlet is sequentially connected with a second high-precision digital pressure gauge and a first switching valve, two outlets of the first switching valve are respectively connected with the inlet of the flowmeter and one inlet of the second switching valve, and the other inlet of the second switching valve is connected with the outlet of the flowmeter; the outlet of the second switching valve is connected with an air outlet interface;
the rapid discharge and overpressure protection system includes: a pressure regulating and reducing valve, a third high-precision digital pressure gauge, an unloading valve and a pneumatic control valve;
the outlet of the pressure regulating valve is also respectively connected with a pressure regulating and reducing valve and an unloading valve;
a pneumatic control valve is connected between the second switching valve and the air outlet interface;
the pneumatic control valve is connected with the pressure regulating and reducing valve, and a third high-precision digital pressure gauge is arranged between the pneumatic control valve and the pressure regulating and reducing valve;
the data acquisition and control system is used for information management, valve test data analysis and report generation.
Other parts except the high-pressure nitrogen cylinder, the high-pressure hose and the data acquisition and control system are arranged in the same box body, and are connected with the high-pressure nitrogen cylinder, the high-pressure hose and the data acquisition and control system when the high-pressure nitrogen cylinder, the high-pressure hose and the data acquisition and control system are used for verification.
And the outlet of the unloading valve is connected with a first silencer.
And the outlet of the pneumatic control valve is connected with a second silencer.
And the inlet of the standard gas storage tank is connected with a standard gas storage tank isolation valve.
The data acquisition and control system comprises an NI acquisition controller module, an NI data acquisition module, an upper computer and a connecting network cable,
the data acquisition and analysis system has the functions of acquiring temperature, pressure and flow signals of a test medium in real time, and transmitting the signals to an upper computer for displaying, analyzing and processing data and curves.
The upper computer comprises software, and the whole structure of the software is designed into a sequential structure and comprises a main interface, an information management module, a valve test data analysis playback module, a report generation module and 1 database file module.
Compared with the prior art, the detection method for cold sealing performance of the MSR safety valve pilot valve starts from the structure of the pilot valve, fully blocks the gas leakage channel of the pilot valve, provides stable test pressure for the inlet of the pilot valve through the MSR safety valve checking device, and realizes accurate detection of the sealing performance of the pilot valve by matching with the sealing cover and the bubble counter, thereby solving the problem that a power plant does not have effective pilot valve sealing performance detection technology and method and thoroughly eliminating potential safety hazards existing in overhaul of the MSR safety valve.
Drawings
FIG. 1 shows a schematic diagram of a device structure adopted by a method for detecting cold sealing performance of a pilot valve of an MSR safety valve;
FIG. 2 shows a schematic diagram of a MSR safety valve verification device;
FIG. 3 shows a schematic diagram of the air supply system;
FIG. 4 is a schematic diagram showing the sealing performance and the pressure setting system;
FIG. 5 shows a schematic diagram of a rapid venting and overpressure protection system;
in the drawing the view of the figure,
1. a high pressure nitrogen cylinder; 2. a high pressure hose; 3. an air inlet interface; 4. a filter; 5. a pressure regulating valve; 6. an isolation valve; 7. a first high-precision digital pressure gauge; 8. a standard gas storage tank isolation valve; 9. a standard gas storage tank; 10. a manual pressure regulating valve; 11. the second high-precision digital pressure gauge; 12. a first switching valve; 13. a flow meter; 14. a second switching valve; 15. an air outlet interface; 16. a pressure regulating and reducing valve; 17. a third high-precision digital pressure gauge; 18. an unloading valve; 19. a pneumatic control valve; 20. a data acquisition and control system; 21. a sealing cover; 22. a bubble counter; 23. a first muffler; 24. and a second muffler.
Detailed Description
For a further understanding of the present invention, embodiments of the invention are described below in conjunction with the examples, but it should be understood that these descriptions are merely intended to illustrate further features and advantages of the invention, and are not limiting of the invention.
The embodiment of the invention discloses a method for detecting cold sealing performance of an MSR safety valve pilot valve, which comprises the following steps:
step one: wrapping and sealing the pilot valve by using a sealing cover, reserving gas paths of the pilot valve, blocking gas path channels outside other pilot valves, and connecting the sealing cover with an MSR safety valve checking device and a bubble counter respectively; the structural connection is shown in figure 1;
the air outlet connector checked by the MSR safety valve is firmly connected with the pilot valve inlet test connector by using a high-pressure hose, the sealing cover is sealed by an inlet flange, the pilot valve inlet test connector is arranged on the inlet flange, and stable test pressure is injected by the pilot valve inlet test connector;
connecting a sealed-enclosure leak outlet test joint with a hose and a leak medium inlet of a bubble counter;
step two: adding water into a leakage medium collecting cup of the bubble counter, and adding the water level to the depth of the air outlet pipe inserted into the liquid level of 12.5mm;
energizing the checking device and the bubble counter, and operating the bubble counter timer to set test time;
step three: introducing nitrogen into a gas supply system of the MSR safety valve checking device, and adjusting the reading of the second high-precision pressure gauge to the sealing test pressure of the safety valve through a manual pressure regulating valve;
step four: the air bubble counter is controlled by a data acquisition and control system of the MSR safety valve checking device, when the air bubble in the air bubble counter leakage medium collecting cup is observed to be continuously discharged at a constant speed, the counter reset button is clicked, the air bubble counter starts to count down and simultaneously records the number of discharged air bubbles, after the test is finished, the counter displays the number of leakage air bubbles recorded in the test time, the number of air bubbles leaked in the pilot valve unit time can be obtained, the gas volume leakage rate of the pilot valve is converted according to the gas volume corresponding to the air bubbles, and finally the air bubble counter is compared with the pilot valve sealing performance acceptance criterion to obtain the sealing performance evaluation result of the pilot valve.
According to the method for detecting the cold sealing performance of the MSR safety valve pilot valve, the MSR safety valve checking device is used for detecting the sealing performance of the pilot valve.
The MSR relief valve verification apparatus, as shown in FIG. 2, includes: the system comprises an air supply system, a sealing performance and pressure setting system, a rapid discharge and overpressure protection system and a data acquisition and control system;
the gas supply system provides nitrogen for testing and controlling requirements for the testing loop and the control loop respectively.
The air supply system, as shown in fig. 3, includes: the high-pressure nitrogen bottle 1 is connected with an air inlet port 3 through a high-pressure hose 2;
the air inlet port 3 is sequentially connected with a filter 4 and a pressure regulating valve 5 through pipelines;
the sealing performance and pressure setting system is used for pressure adjustment and setting, pressure drop monitoring, standard volume providing and leakage flow detection in positive pressure sealing tests of a main valve, a secondary pilot valve and a primary pilot valve and in pressure setting tests of the primary pilot valve.
The sealing performance and pressure setting system, as shown in fig. 4, includes: the device comprises an isolation valve 6, a standard gas storage tank 9, a first high-precision digital pressure gauge 7, a manual pressure regulating valve 10, a second high-precision digital pressure gauge 11, a first switching valve 12, a flowmeter 13, a second switching valve 14 and a gas outlet interface 15;
the outlet of the pressure regulating valve 5 is sequentially connected with an isolation valve 6, a standard gas storage tank 9, a first high-precision digital pressure gauge 7 and a manual pressure regulating valve 10;
the inlet of the standard gas storage tank 9 is connected with a standard gas storage tank isolation valve 8;
the standard gas storage tank 9 stores a certain amount of nitrogen for finely adjusting the gas pressure in the device during the verification test; if some pipelines of the verification device have leakage, the system pressure can be regulated through the gas storage tank.
The outlet of the manual pressure regulating valve 10 is sequentially connected with a second high-precision digital pressure gauge 11 and a first switching valve 12, two outlets of the first switching valve 12 are respectively connected with an inlet of a flowmeter 13 and one inlet of a second switching valve 14, and the other inlet of the second switching valve 14 is connected with an outlet of the flowmeter 13; the outlet of the second switching valve 14 is connected with an air outlet interface 15;
the accurate control and adjustment of the pressure are realized through the mutual coordination of the pressure regulating valve 5, the standard air storage tank 9, the first high-precision digital pressure gauge 7, the manual pressure regulating valve 10 and the second high-precision digital pressure gauge 11;
in the process of checking the tightness of the sealing material,
the reading of the second high-precision pressure gauge 11 is adjusted to the safety valve sealing test pressure through the manual pressure regulating valve 10;
a first switching valve 12; a flow meter 13; the second switching valve 14 cooperates; the three form 2 flow channels, the first flow channel is from the first switching valve 12 to the flowmeter 13 to the second switching valve 14 to the air outlet interface 15, and the other flow channel is not communicated at this time, and leakage flow detection is carried out through the flowmeter 13. The second flow path is that the first switching valve 12 is directly connected to the second switching valve 14 and then to the air outlet port 15, and the air directly enters the sealed cover through the air outlet port 15, so that air bubbles are detected in the sealed cover, and the flowmeter 13 has no function.
In the process of the setting pressure test, the pressure test device,
the reading of the first high-precision digital pressure gauge 7 is adjusted to 90% of the setting pressure value of the pilot valve of the MSR safety valve by adjusting the pressure regulating valve 5, and then the manual pressure regulating valve 10 is manually and slowly adjusted until the pilot valve of the MSR safety valve is tripped;
the rapid discharge and overpressure protection system, as shown in fig. 5, comprises: a pressure regulating and reducing valve 16, a third high-precision digital pressure gauge 17, an unloading valve 18 and a pneumatic control valve 19;
the outlet of the inlet pressure regulating valve 5 is also respectively connected with a pressure regulating and reducing valve 16 and an unloading valve 18;
a pneumatic control valve 19 is connected between the second switching valve 14 and the air outlet port 15;
the pneumatic control valve 19 is connected with the pressure regulating and reducing valve 16, and a third high-precision digital pressure gauge 17 is arranged between the pneumatic control valve and the pressure regulating and reducing valve;
the outlet of the unloading valve 18 is connected with a first muffler 23; the outlet of the pneumatic control valve 19 is connected with a second muffler 24;
in the course of the verification of the tightness,
if the pressure in the device is too high, the unloading valve 18 can be quickly opened to complete pressure relief and exhaust;
when the sealing performance and the pressure setting system are over-pressure,
the unloading valve 18 is tripped to release pressure, so that the personal safety of system equipment and operators is ensured;
when the valve cavity pressure falls back due to jump during the setting pressure test, the software can rapidly control the pneumatic control valve 19 to open the exhaust and pressure relief, so as to avoid the frequency jump of the unloading valve 18;
the pressure-regulating and pressure-reducing valve 16 is used for regulating the air supply pressure of the pneumatic control valve (19).
The data acquisition and control system 20 is used for information management, valve testing, valve test data analysis and report generation;
the data acquisition and control system 20 comprises an NI acquisition controller module, an NI data acquisition module, an upper computer and a connecting network cable,
the data acquisition and analysis system 20 is used for acquiring temperature, pressure and flow signals of a test medium in real time and transmitting the signals to an upper computer for displaying, analyzing and processing data and curves.
The upper computer comprises software, and the whole structure of the software is designed into a sequential structure and comprises a main interface, an information management module, a valve test data analysis playback module, a report generation module and 1 database file module.
The MSR safety valve calibration device adopts a high-precision pressure display instrument, a precise pressure regulating valve and a standard air storage tank, can precisely regulate, control and display the test pressure of the MSR safety valve, and ensures the pressure stability and the true and credible test result in the test process; the data automatic acquisition and control system is adopted, so that the sealing performance and the setting pressure of the MSR safety valve can be automatically detected, and automatic protection is realized when the pressure is over-pressure. The device has the advantages of modularized design, small structure and simple and quick operation, provides a visual, reliable and convenient detection means for overhauling the MSR safety valve, and effectively ensures the detection of the sealing performance of the MSR safety valve.
The above description of the embodiments is only for aiding in the understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present 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 (9)
- The method for detecting cold sealing performance of the MSR safety valve pilot valve is characterized by comprising the following steps:step one: wrapping and sealing the pilot valve by using a sealing cover, wherein the sealing cover is respectively connected with the MSR safety valve checking device and the bubble counter;step two: adding water into a leakage medium collecting cup of the bubble counter, powering on the MSR safety valve checking device and the bubble counter, and operating the bubble counter timer to set test time;step three: introducing nitrogen into a gas supply system of the MSR safety valve checking device, and adjusting the reading of the second high-precision pressure gauge to the sealing test pressure of the safety valve through a manual pressure regulating valve;step four: the air bubble counter is controlled by a data acquisition and control system of the MSR safety valve checking device, when the air bubble in the air bubble counter leakage medium collecting cup is observed to be continuously discharged at a constant speed, the counter reset button is clicked, the air bubble counter starts to count down and simultaneously records the number of discharged air bubbles, after the test is finished, the counter displays the number of leakage air bubbles recorded in the test time, the number of air bubbles leaked in the pilot valve unit time can be obtained, the gas volume leakage rate of the pilot valve is converted according to the gas volume corresponding to the air bubbles, and finally the air bubble counter is compared with the pilot valve sealing performance acceptance criterion to obtain the sealing performance evaluation result of the pilot valve.
- 2. The method for detecting cold sealing performance of an MSR safety valve pilot valve according to claim 1, wherein in the second step, the water level is added to a depth of 12.5mm of the insertion liquid level of the air outlet pipe.
- 3. The method for detecting cold sealing performance of an MSR safety valve pilot valve according to claim 1, wherein in the first step, a high-pressure hose is used to firmly connect an air outlet port checked by the MSR safety valve with an inlet test joint of the pilot valve, a sealing cover is sealed by an inlet flange, the inlet flange is provided with the inlet test joint of the pilot valve, and stable test pressure is injected by the inlet test joint of the pilot valve;a hose was used to connect the sealed-enclosure leak outlet test fitting to the bubble counter leak medium inlet.
- 4. The method for detecting cold sealing performance of an MSR safety valve pilot valve according to claim 1, wherein the MSR safety valve checking device comprises: the system comprises an air supply system, a sealing performance and pressure setting system, a rapid discharge and overpressure protection system and a data acquisition and control system;the air supply system includes: the high-pressure nitrogen cylinder (1) is connected with the air inlet interface (3) through a high-pressure hose (2);the air inlet interface (3) is sequentially connected with a filter (4) and a pressure regulating valve (5) through pipelines;the sealing performance and pressure setting system comprises: the device comprises an isolation valve (6), a standard gas storage tank (9), a first high-precision digital pressure gauge (7), a manual pressure regulating valve (10), a second high-precision digital pressure gauge (11), a first switching valve (12), a flowmeter (13), a second switching valve (14) and a gas outlet interface (15);an outlet of the pressure regulating valve (5) is sequentially connected with an isolation valve (6), a standard gas storage tank (9), a first high-precision digital pressure gauge (7) and a manual pressure regulating valve (10);the outlet of the manual pressure regulating valve (10) is sequentially connected with a second high-precision digital pressure gauge (11) and a first switching valve (12), two outlets of the first switching valve (12) are respectively connected with the inlet of the flowmeter (13) and one inlet of the second switching valve (14), and the other inlet of the second switching valve (14) is connected with the outlet of the flowmeter (13); the outlet of the second switching valve (14) is connected with an air outlet interface (15);the rapid discharge and overpressure protection system includes: the pressure regulating and reducing valve (16), the third high-precision digital pressure gauge (17), the unloading valve (18) and the pneumatic control valve (19);the outlet of the pressure regulating valve (5) is also respectively connected with a pressure regulating and reducing valve (16) and an unloading valve (18);a pneumatic control valve (19) is connected between the second switching valve (14) and the air outlet interface (15);the pneumatic control valve (19) is connected with the pressure regulating and reducing valve (16), and a third high-precision digital pressure gauge (17) is arranged between the pneumatic control valve and the pressure regulating and reducing valve;the data acquisition and control system (20) is used for information management, valve testing, valve test data analysis and report generation.
- 5. The method for detecting cold sealing performance of an MSR safety valve pilot valve according to claim 4, wherein the outlet of the unloading valve (18) is connected with a first muffler (23).
- 6. The method for detecting cold sealing performance of an MSR safety valve pilot valve according to claim 4, wherein the outlet of the pneumatic control valve (19) is connected with a second muffler (24).
- 7. The method for detecting cold sealing performance of the MSR safety valve pilot valve according to claim 4, wherein the inlet of the standard gas storage tank (9) is connected with a standard gas storage tank isolation valve (8).
- 8. The method for detecting cold sealing performance of an MSR safety valve pilot valve as claimed in claim 4, wherein said data acquisition and control system (20) comprises an NI acquisition controller module, an NI data acquisition module, an upper computer and a connecting network cable,the data acquisition and analysis system (20) has the functions of acquiring temperature, pressure and flow signals of a test medium in real time and transmitting the signals to an upper computer for displaying, analyzing and processing data and curves.
- 9. The method for detecting cold sealing performance of an MSR safety valve pilot valve according to claim 4, wherein the upper computer contains software, and the software is designed into a sequential structure, and comprises a main interface, an information management module, a valve test data analysis playback module, a report generation module and 1 database file module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311495326.1A CN117664460A (en) | 2023-11-10 | 2023-11-10 | Method for detecting cold sealing performance of pilot valve of MSR safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311495326.1A CN117664460A (en) | 2023-11-10 | 2023-11-10 | Method for detecting cold sealing performance of pilot valve of MSR safety valve |
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| Publication Number | Publication Date |
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| CN117664460A true CN117664460A (en) | 2024-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311495326.1A Pending CN117664460A (en) | 2023-11-10 | 2023-11-10 | Method for detecting cold sealing performance of pilot valve of MSR safety valve |
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| Country | Link |
|---|---|
| CN (1) | CN117664460A (en) |
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2023
- 2023-11-10 CN CN202311495326.1A patent/CN117664460A/en active Pending
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