Checking device for electromagnetic valve group of diesel generator in nuclear power plant

Abstract

The invention particularly relates to a nuclear power plant diesel generator solenoid valve group verification device which comprises an air pressure adjusting module (1), an air pressure input and output port module (2), a power module (3), a solenoid valve module (4), an air pressure display module (5) and an air pressure output port module (6). The electromagnetic valve module (4) is used for an electromagnetic valve group; an inlet of the air pressure adjusting module (1) is connected with an external air source pipeline, and an outlet of the air pressure adjusting module (1) is connected with inlet pipelines of the electromagnetic valves (42) through the air pressure input and output port module (2). The air pressure display module (5) is connected with outlet pipelines of the electromagnetic valves (42) through the air pressure input and output port module (2). And the power supply module (3) is in circuit connection with each electromagnetic valve (42). The nuclear power plant diesel generator solenoid valve group verification device realizes on-site nuclear power plant diesel generator solenoid valve group performance test, and ensures that the nuclear power plant diesel generator solenoid valve group is safe and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power plant debugging and maintenance, in particular to a nuclear power plant diesel generator electromagnetic valve group calibration device. Background Art

[0002] The main function of a nuclear power plant's diesel generator is to provide power to the emergency AC bus when the medium-voltage bus in the nuclear power plant loses pressure due to loss of normal power supply outside the plant or a bus failure. It also supplies power to the loads of the safety system and other designated non-safety items to prevent important safety equipment from being damaged or rendered ineffective due to power loss, ensure emergency shutdown of the reactor, avoid nuclear leakage accidents, and ensure personal safety.

[0003] The diesel generators in nuclear power plants are equipped with multiple sets of turbochargers. The turbochargers are put into automatic operation when the diesel generators in nuclear power plants are started, and are opened or closed by the speed governor according to the load changes of the diesel generators in nuclear power plants. The energized and de-energized control of the solenoid valve corresponds to the start and stop of the turbocharger. Domestic nuclear power plants generally use 5-position 2-way solenoid valve groups, and the solenoid valves are divided into two parts: the pilot valve and the main valve body. When the speed governor issues a turbocharger start command, the solenoid valve is energized, the piston moves to the right, and the intake gate valve and the exhaust gate valve are driven to open; when the speed governor issues a turbocharger shutdown command, the solenoid valve loses power, the piston moves in the opposite direction, and the intake gate valve and the exhaust gate valve are closed accordingly; thereby realizing the function of controlling the start and stop of the turbocharger.

[0004] As a key component of a nuclear power plant diesel generator, the solenoid valve group plays a vital role in the normal operation and accident handling of the nuclear power plant. Before the full power and low power tests of the nuclear power plant diesel generator, the performance of the solenoid valve group needs to be confirmed. Therefore, it is necessary to develop a nuclear power plant diesel generator solenoid valve group calibration device. Summary of the invention

[0005] The purpose of the present invention is to provide a nuclear power plant diesel generator solenoid valve group calibration device, the device is designed according to the structural principle of the nuclear power plant diesel generator solenoid valve group, to achieve on-site nuclear power plant diesel generator solenoid valve group performance test, so as to grasp the nuclear power plant diesel generator solenoid valve group performance status and change trend, to ensure the nuclear power plant diesel generator solenoid valve group safety and reliability.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A nuclear power plant diesel generator solenoid valve group calibration device comprises an air pressure regulating module, an air pressure input and output port module, a power module, a solenoid valve module, an air pressure display module and an air pressure output port module; the solenoid valve module is used to install the nuclear power plant diesel generator solenoid valve group, and the nuclear power plant diesel generator solenoid valve group comprises a plurality of solenoid valves; the air pressure regulating module inlet is connected to an external air source pipeline, and the outlet is respectively connected to the inlet pipeline of each solenoid valve through the air pressure input and output port module, so as to provide an adjustable working pressure for each solenoid valve; the air pressure display module is respectively connected to the outlet pipeline of each solenoid valve through the air pressure input and output port module, so as to display the working pressure of each solenoid valve; the outlet of each solenoid valve is connected to the turbocharger corresponding to each solenoid valve through the air pressure input and output port module and the air pressure output port module; the power module is respectively connected to the circuit of each solenoid valve, so as to provide an adjustable working power supply for each solenoid valve.

[0008] Working principle: Connect the external air source to the air pressure regulating module pipeline. The air pressure regulating module regulates the pressure of the connected external air source and provides working pressure for each solenoid valve through the air pressure input and output port module. The air pressure display module displays the working pressure of each solenoid valve. The power supply module provides adjustable working power for each solenoid valve, simulating manual control of the demagnetization and excitation actions of each solenoid valve.

[0009] Furthermore, the nuclear power plant diesel generator solenoid valve group calibration device is a box structure, including a box and a partitioned control panel on the box; the air pressure regulating module includes an external air source access pipeline, a pneumatic ball valve, a filter pressure reducing valve and a first pressure gauge fixedly installed in the box, and an external air source access pipeline inlet, a pneumatic ball valve controller, a filter pressure reducing valve controller and a first pressure gauge display fixedly installed on the control panel; a pneumatic ball valve and a filter pressure reducing valve are provided on the external air source access pipeline, the pneumatic ball valve is close to the external air source access pipeline inlet, and the filter pressure reducing valve is close to the external air source access pipeline outlet; a first pressure gauge is provided at the filter pressure reducing valve outlet; the pneumatic ball valve controller controls the opening of the pneumatic ball valve, the filter pressure reducing valve controller controls the opening of the filter pressure reducing valve, and the first pressure gauge display displays the reading of the first pressure gauge.

[0010] Furthermore, the external gas source access pipeline inlet and the external gas source access pipeline outlet are both provided with quick plugs.

[0011] Furthermore, the air pressure input and output port module includes an air pressure input port and a plurality of first air pressure output ports fixedly mounted on the control panel; the air pressure output port module includes a plurality of second air pressure output ports fixedly mounted on the control panel; the solenoid valve module includes a plurality of solenoid valve slots fixedly mounted on the control panel; the number of the solenoid valve slots is the same as the number of the solenoid valves; the number of the first air pressure output ports and the second air pressure output ports are both the same as the number of the solenoid valves; a first air pressure output port pipeline is connected to a second air pressure output port; the air pressure input port is connected to an external air source access pipeline outlet pipeline.

[0012] Furthermore, each solenoid valve slot is threadedly installed in a one-to-one correspondence with each solenoid valve.

[0013] Further, the air pressure display module includes a plurality of second pressure gauge displays and a plurality of third pressure gauge displays fixedly mounted on the control panel, and a plurality of second pressure gauges and a plurality of third pressure gauges fixedly mounted inside the box; the number of the second pressure gauge displays and the second pressure gauges is the same and corresponds one to one, and a second pressure gauge display displays the reading of a second pressure gauge; the number of the third pressure gauge displays and the third pressure gauges is the same and corresponds one to one, and a third pressure gauge display displays the readings of a group of third pressure gauges; a first air pressure output port includes a third air pressure output port and a fourth air pressure output port; a second air pressure output port includes a fifth air pressure output port and a sixth air pressure output port; a third air pressure output port corresponds to a fifth air pressure output port, and a fourth air pressure output port corresponds to a sixth air pressure output port; a third air pressure output port pipeline is connected to a fifth air pressure output port; a fourth air pressure output port pipeline is connected to a sixth air pressure output port; a second pressure gauge is provided on the pipeline connecting a third air pressure output port and a fifth air pressure output port, and a third pressure gauge is provided on the pipeline connecting a fourth air pressure output port and a sixth air pressure output port.

[0014] Furthermore, a third air pressure output port is provided with a quick plug, a fourth air pressure output port is provided with a quick plug, a fifth air pressure output port is provided with a quick plug, and a sixth air pressure output port is provided with a quick plug.

[0015] Furthermore, the power module includes an external power access circuit fixedly installed inside the box, and an external power access circuit input end, a voltage regulator, a voltage and current reading display and multiple power switches fixedly installed on the control panel; the external power access circuit output end is connected to the voltage regulator input circuit, and the voltage regulator output end is respectively connected to each power switch circuit; the number of power switches and solenoid valves is the same; the voltage regulator output end is provided with a voltage and current reading display for reading and displaying voltage signals and current signals.

[0016] Furthermore, the external power supply is a 24V DC power supply or a 220V AC power supply; when the external power supply is a 24V DC power supply, the power module is connected to the external power supply circuit; when the external power supply is a 220V AC power supply, the power module is connected to the external power supply through a power adapter circuit, and the power adapter converts the 220V AC power supply into a 24V DC power supply; the power regulator has a voltage regulation range of 0-24V.

[0017] Furthermore, universal wheels are arranged at the bottom of the box.

[0018] Furthermore, the control panel can be detachably mounted on the box.

[0019] Beneficial technical effects of the present invention:

[0020] The nuclear power plant diesel generator solenoid valve group calibration device of the present invention is designed based on the control principle of the nuclear power plant diesel generator solenoid valve group, ensures the smooth implementation of the nuclear power plant diesel generator solenoid valve group calibration work, provides technical support for solenoid valve fault judgment and status maintenance, improves the safety and reliability of the solenoid valve, and avoids human errors; the box structure and modular partition design ensure that the circuit and gas circuit connections are clear at a glance, the electrical partition ensures safety, and effectively avoids human operation and reading errors; the control panel can be disassembled as a whole to facilitate regular maintenance and overhaul of the equipment; universal wheels are configured at the bottom of the box for easy movement in narrow sites; the power supply mode of connecting to a DC power supply or a power adapter is mutually standby, and the problems of long wiring distance of the 220V AC power supply at the nuclear power site, inconvenient use of the wiring board, and complicated power supply certification procedures are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a nuclear power plant diesel generator electromagnetic valve group calibration device of the present invention;

[0022] Figure 2 It is a gas circuit connection diagram of the electromagnetic valve group calibration device of a nuclear power plant diesel generator of the present invention;

[0023] Figure 3 It is a schematic diagram of a control panel of a nuclear power plant diesel generator solenoid valve group calibration device according to the present invention.

[0024] In the figure, 1. air pressure regulating module; 2. air pressure input and output port module; 3. power module; 4. solenoid valve module; 5. air pressure display module; 6. air pressure output port module; 11. external air source access pipeline; 12. pneumatic ball valve; 13. filter pressure reducing valve; 14. external air source access pipeline inlet; 15. external air source access pipeline outlet; 16. first pressure gauge; 17. pneumatic ball valve controller; 18. filter pressure reducing valve controller; 19. first pressure gauge display; 21. air pressure input port; 22. first air pressure output port; 31. external power supply access circuit input terminal; 32. power switch; 33. voltage regulator; 34. voltage and current reading display; 41. solenoid valve slot; 42. solenoid valve; 51. second pressure gauge; 52. third pressure gauge; 53. second pressure gauge display; 54. third pressure gauge display; 61. second air pressure output port. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as “left end”, “right end”, “above”, “below”, “outside”, and “inside” are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0027] Furthermore, the terms “first”, “second”, etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

[0028] See also Figure 1-3The present embodiment provides a nuclear power plant diesel generator solenoid valve group calibration device, comprising an air pressure regulating module 1, an air pressure input and output port module 2, a power module 3, an electromagnetic valve module 4, an air pressure display module 5 and an air pressure output port module 6; the electromagnetic valve module 4 is used to install the nuclear power plant diesel generator solenoid valve group, and the nuclear power plant diesel generator solenoid valve group includes a plurality of electromagnetic valves 42; the inlet of the air pressure regulating module 1 is connected to an external air source pipeline, and the outlet is respectively connected to the inlet pipeline of each electromagnetic valve 42 through the air pressure input and output port module 2, so as to provide an adjustable working pressure for each electromagnetic valve 42; the air pressure display module 5 is respectively connected to the outlet pipeline of each electromagnetic valve 42 through the air pressure input and output port module 2, so as to display the working pressure of each electromagnetic valve 42; the outlet of each electromagnetic valve 42 is connected to the turbocharger corresponding to each electromagnetic valve 42 through the air pressure input and output port module 2 and the air pressure output port module 6; the power module 3 is respectively connected to the circuit of each electromagnetic valve 42, so as to provide an adjustable working power supply for each electromagnetic valve 42.

[0029] In this embodiment, the nuclear power plant diesel generator solenoid valve group calibration device is a box structure, including a box and a partitioned control panel on the box; the air pressure regulating module 1 includes an external air source access pipeline 11, a pneumatic ball valve 12, a filter pressure reducing valve 13 and a first pressure gauge 16 fixedly installed in the box, and an external air source access pipeline inlet 14, a pneumatic ball valve controller 17, a filter pressure reducing valve controller 18 and a first pressure gauge display 19 fixedly installed on the control panel; a pneumatic ball valve 12 and a filter pressure reducing valve 13 are provided on the external air source access pipeline 11, the pneumatic ball valve 12 is close to the external air source access pipeline inlet 14, and the filter pressure reducing valve 13 is close to the external air source access pipeline outlet 15; a first pressure gauge 16 is provided at the outlet of the filter pressure reducing valve 13; the pneumatic ball valve controller 17 controls the opening of the pneumatic ball valve 12, the filter pressure reducing valve controller 18 controls the opening of the filter pressure reducing valve 13, and the first pressure gauge display 19 displays the reading of the first pressure gauge 16.

[0030] In this embodiment, the external gas source access pipeline inlet 14 and the external gas source access pipeline outlet 15 are both provided with quick plugs.

[0031] The external gas source is connected to the pipeline inlet 14 through a quick plug, the opening of the pneumatic ball valve 12 is controlled by the pneumatic ball valve controller 17, and the opening of the filter pressure reducing valve 13 is controlled by the filter pressure reducing valve controller 18, so as to realize the access of the external gas source and the filtering and pressure regulation of the accessed external gas source.

[0032] In this embodiment, the air pressure input and output port module 2 includes an air pressure input port 21 fixedly installed on the control panel and a plurality of first air pressure output ports 22; the air pressure output port module 6 includes a plurality of second air pressure output ports 61 fixedly installed on the control panel; the solenoid valve module 4 includes a plurality of solenoid valve slots 41 fixedly installed on the control panel; the number of the solenoid valve slots 41 is the same as the number of the solenoid valves 42; the number of the first air pressure output ports 22 and the second air pressure output ports 61 are both the same as the number of the solenoid valves 42; a first air pressure output port 22 is pipeline-connected to a second air pressure output port 61; the air pressure input port 21 is pipeline-connected to an external air source access pipeline outlet 15.

[0033] In this embodiment, each solenoid valve slot 41 is threadedly mounted in a one-to-one correspondence with each solenoid valve 42 to avoid slipping during the test.

[0034] In this embodiment, the air pressure display module 5 includes a plurality of second pressure gauge displays 53 and a plurality of third pressure gauge displays 54 fixedly mounted on the control panel, and a plurality of second pressure gauges 51 and a plurality of third pressure gauges 52 fixedly mounted inside the box body; the number of the second pressure gauge displays 53 and the second pressure gauges 51 is the same and corresponds one to one, and one second pressure gauge display 53 displays the reading of one second pressure gauge 51; the number of the third pressure gauge displays 54 and the third pressure gauges 52 is the same and corresponds one to one, and one third pressure gauge display 54 displays the reading of a group of third pressure gauges 52; a first air pressure output port 22 includes a third air pressure output port A second air pressure output port 61 includes a fifth air pressure output port and a sixth air pressure output port; a third air pressure output port corresponds to a fifth air pressure output port, and a fourth air pressure output port corresponds to a sixth air pressure output port; a third air pressure output port pipeline is connected to a fifth air pressure output port; a fourth air pressure output port pipeline is connected to a sixth air pressure output port; a second pressure gauge 51 is provided on the pipeline connecting a third air pressure output port and a fifth air pressure output port, and a third pressure gauge 52 is provided on the pipeline connecting a fourth air pressure output port and a sixth air pressure output port.

[0035] In this embodiment, a third air pressure output port is provided with a quick plug, a fourth air pressure output port is provided with a quick plug, a fifth air pressure output port is provided with a quick plug, and a sixth air pressure output port is provided with a quick plug.

[0036] In this embodiment, the power module 3 includes an external power access circuit fixedly installed inside the box, and an external power access circuit input end 31, a voltage regulator 33, a voltage and current reading display 34 and multiple power switches 32 fixedly installed on the control panel; the output end of the external power access circuit is connected to the input end circuit of the voltage regulator 33, and the output end of the voltage regulator 33 is respectively connected to the circuits of each power switch 32; the number of the power switches 32 and the solenoid valves 42 is the same; the output end of the voltage regulator 33 is provided with a voltage and current reading display 34 for reading and displaying voltage signals and current signals.

[0037] The external power supply is a 24V DC power supply or a 220V AC power supply; the power module 3 is connected to the external power supply circuit; when the external power supply is a 220V AC power supply, the power module 3 is connected to the external power supply through a power adapter circuit, and the power adapter converts the 220V AC power supply into a 24V DC power supply.

[0038] In this embodiment, the external power supply is a 220V AC power supply, the power module 3 is connected to the external power supply through a power adapter circuit, and the power adapter converts the 220V AC power supply into a 24V DC power supply; the power regulator voltage regulation range is 0-24V.

[0039] In this embodiment, universal wheels are arranged at the bottom of the box, so that the whole device can be portable and moved in narrow places.

[0040] In this embodiment, the control panel is detachably mounted on the box.

[0041] When the nuclear power plant diesel generator solenoid valve group calibration device of the present invention is used to calibrate the nuclear power plant diesel generator solenoid valve group, the following steps are included:

[0042] Install each solenoid valve slot 41 of the solenoid valve module 4 in correspondence with each solenoid valve, and install one solenoid valve 42 in one solenoid valve slot 41;

[0043] Connect the external gas source access pipeline inlet 14 of the gas pressure regulating module 1 to the external gas source pipeline;

[0044] Connect the air pressure input port 21 of the air pressure input and output port module 2 to the inlet pipelines of each solenoid valve 42 respectively;

[0045] Connect each first air pressure output port 22 of the air pressure input and output port module 2 to each outlet of the solenoid valve 42 in a one-to-one correspondence, and one solenoid valve 42 outlet pipeline is connected to one first air pressure output port 22; connect each second air pressure output port module 61 of the air pressure output port module 6 to the turbocharger corresponding to each solenoid valve 42 in a one-to-one correspondence, and each solenoid valve 42, each first air pressure output port 22 and each second air pressure output port module 61 are in a one-to-one correspondence, and one second air pressure output port module 61 pipeline is connected to a turbocharger corresponding to a corresponding solenoid valve 42;

[0046] Connect the external power supply circuit input terminal 31 of the power module 3 to the external power supply circuit, connect each power switch 32 of the power module 3 to each solenoid valve in a one-to-one circuit, and connect one power switch 32 circuit to one solenoid valve 42;

[0047] The pressure gauge in the air pressure display module 5 is calibrated to zero, and the pneumatic ball valve 12 and the filter pressure reducing valve 13 in the air pressure regulating module 1 are opened to filter and regulate the pressure of the connected external air source;

[0048] The air pressure is transmitted to each solenoid valve 42 through the connecting pipelines between the air pressure input and output port module 2 and each solenoid valve group 4; when the pressure displayed in the air pressure regulating module 1 and the air pressure display module 5 is the outlet pressure required by each solenoid valve, the demagnetization sealing performance test, excitation sealing performance test, working current test and minimum starting voltage test are carried out respectively.

[0049] The demagnetization sealing performance test includes the demagnetization sealing performance test of a single solenoid valve and the demagnetization sealing performance test of a solenoid valve group.

[0050] The demagnetization sealing performance test of a single solenoid valve includes the following steps: selecting a solenoid valve for a single solenoid valve demagnetization sealing performance test, confirming that the selected solenoid valve is in a demagnetized state in manual mode, and other solenoid valves are in an excitation state in manual mode or the air intake has been isolated; after confirming that the pressure displayed in the air pressure regulating module 1 and the air pressure display module 5 is stable, start recording the pressure data of the solenoid valve in the demagnetization state in the air pressure display module 5. After the test is completed, record the final pressure value of the solenoid valve in the demagnetization state in the air pressure display module 5 again, and analyze whether the demagnetization sealing performance of the solenoid valve is qualified according to the test procedure, that is, whether there is leakage.

[0051] The demagnetization sealing performance test of the solenoid valve group includes the following steps: confirm that all the solenoid valves in the solenoid valve group are in the demagnetization state in the manual mode; after confirming that the pressure displayed in the air pressure regulating module 1 and the air pressure display module 5 is stable, start recording the pressure data of all the solenoid valves in the air pressure display module 5 in the demagnetization state. After the test is completed, record the final pressure value of all the solenoid valves in the air pressure display module 5 in the demagnetization state again, and analyze whether the demagnetization sealing performance of the solenoid valve group is qualified according to the test procedure, that is, whether there is leakage.

[0052] The excitation seal performance test includes the excitation seal performance test of a single solenoid valve and the excitation seal performance test of a solenoid valve group.

[0053] The excitation sealing performance test of a single solenoid valve includes the following steps: select a solenoid valve to perform a single solenoid valve excitation sealing performance test, confirm that the selected solenoid valve is in a demagnetized state in manual mode, and other solenoid valves are in an excitation state in manual mode or the air intake has been isolated; turn on the power switch in the power module 3, adjust the adjustable power supply in the power module 3 to the rated voltage of the solenoid valve group and then output the voltage, turn on the power switch corresponding to the solenoid valve in the power module 3, observe whether the pressure gauge data in the air pressure display module 5 is switched correctly, and start recording the corresponding interface pressure data of the solenoid valve in the air pressure display module 5 under the excitation state after confirming that the displayed pressure in the air pressure regulating module 1 and the air pressure display module 5 is stable. After the test is completed, record the final pressure value of the solenoid valve in the excitation state in the air pressure display module 5 again, and analyze whether the excitation sealing performance of the solenoid valve to be tested is qualified according to the test procedure, that is, whether there is leakage.

[0054] The solenoid valve group excitation sealing performance test includes the following steps: confirm that all solenoid valve groups of the solenoid valve group are in the demagnetized state in the manual mode; turn on the power switch in the power module 3, adjust the adjustable power supply in the power module 3 to the rated voltage of the solenoid valve group and then output the voltage, turn on the power switches corresponding to all the solenoid valves in the power module 3, observe whether the pressure gauge data in the air pressure display module 5 is switched correctly, and start recording the pressure data of each interface under the excitation state of each solenoid valve in the air pressure display module 5 after confirming that the pressure displayed by the air pressure regulating module 1 and the air pressure display module 5 is stable. After the test is completed, record the final pressure value of each solenoid valve in the air pressure display module 5 under the excitation state again, and analyze whether the excitation sealing performance of the solenoid valve group is qualified according to the test procedure, that is, whether there is leakage.

[0055] The working current test includes the following steps: turn on the power switch in the power module 3, adjust the adjustable power supply in the power module 3 to the rated voltage of the solenoid valve group and then output the voltage, turn on the power switch corresponding to each solenoid valve in the power module 3, record the current value in the power module 3 and observe whether the gas path of each solenoid valve is switched, and hear the sound of the valve core movement or feel obvious vibration; detect the current size of the solenoid valve coil through the current value in the power module 3, and judge whether the resistance of the solenoid valve coil is normal and whether the performance of the solenoid valve is deteriorated.

[0056] The minimum starting voltage test includes the following steps: turn on the power switch in the power module 3, and turn on the power switches corresponding to each solenoid valve in the power module 3, slowly adjust the adjustable power supply in the power module 3 from 0V and output the voltage, observe whether the air circuit of each solenoid valve is switched and whether the valve core movement sound can be heard or obvious vibration can be felt; by observing the pressure value in the air pressure display module 5, if the solenoid valve switches the interface at this voltage and has pressure output, and at the same time, an obvious valve core movement sound can be heard or obvious vibration can be felt, then this voltage is the minimum starting voltage.

[0057] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A nuclear power plant diesel generator solenoid valve group calibration device, characterized in that: The invention comprises an air pressure regulating module (1), an air pressure input / output port module (2), a power module (3), an electromagnetic valve module (4), an air pressure display module (5) and an air pressure output port module (6); the electromagnetic valve module (4) is used to install an electromagnetic valve group of a diesel generator in a nuclear power plant, and the electromagnetic valve group of a diesel generator in a nuclear power plant comprises a plurality of electromagnetic valves (42); the inlet of the air pressure regulating module (1) is connected to an external air source pipeline, and the outlet is respectively connected to the inlet pipelines of each electromagnetic valve (42) through the air pressure input / output port module (2), so that Each solenoid valve (42) provides an adjustable working pressure; the air pressure display module (5) is connected to the outlet pipeline of each solenoid valve (42) through the air pressure input and output port module (2) to display the working pressure of each solenoid valve (42); the outlet of each solenoid valve (42) is connected to the turbocharger corresponding to each solenoid valve (42) through the air pressure input and output port module (2) and the air pressure output port module (6); the power supply module (3) is connected to the circuit of each solenoid valve (42) to provide an adjustable working power supply for each solenoid valve (42).

2. The nuclear power plant diesel generator solenoid valve group calibration device according to claim 1 is characterized in that: The nuclear power plant diesel generator electromagnetic valve group calibration device is a box structure, comprising a box and a control panel divided into partitions on the box; the air pressure regulating module (1) comprises an external air source access pipeline (11), a pneumatic ball valve (12), a filter pressure reducing valve (13) and a first pressure gauge (16) fixedly installed in the box, and an external air source access pipeline inlet (14), a pneumatic ball valve controller (17), a filter pressure reducing valve controller (18) and a first pressure gauge display (19) fixedly installed on the control panel; the external air source access pipeline (11) A pneumatic ball valve (12) and a filter pressure reducing valve (13) are provided on the pneumatic ball valve (12), the pneumatic ball valve (12) is close to the inlet (14) of the external gas source access pipeline, and the filter pressure reducing valve (13) is close to the outlet (15) of the external gas source access pipeline; a first pressure gauge (16) is provided at the outlet of the filter pressure reducing valve (13); the pneumatic ball valve controller (17) controls the opening of the pneumatic ball valve (12), the filter pressure reducing valve controller (18) controls the opening of the filter pressure reducing valve (13), and the first pressure gauge display (19) displays the reading of the first pressure gauge (16).

3. The nuclear power plant diesel generator solenoid valve group calibration device according to claim 2 is characterized in that: The external gas source access pipeline inlet (14) and the external gas source access pipeline outlet (15) are both provided with quick plugs.

4. The nuclear power plant diesel generator solenoid valve group calibration device according to claim 2, characterized in that: The air pressure input and output port module (2) comprises an air pressure input port (21) fixedly mounted on the control panel and a plurality of first air pressure output ports (22); the air pressure output port module (6) comprises a plurality of second air pressure output ports (61) fixedly mounted on the control panel; the solenoid valve module (4) comprises a plurality of solenoid valve slots (41) fixedly mounted on the control panel; the number of the solenoid valve slots (41) is the same as the number of the solenoid valves (42); the number of the first air pressure output ports (22) and the second air pressure output ports (61) are both the same as the number of the solenoid valves (42); a first air pressure output port (22) is pipeline-connected to a second air pressure output port (61); the air pressure input port (21) is pipeline-connected to an external air source access pipeline outlet (15).

5. The nuclear power plant diesel generator solenoid valve group calibration device according to claim 4, characterized in that: Each solenoid valve groove (41) and each solenoid valve (42) are threadedly mounted in a one-to-one correspondence.

6. The nuclear power plant diesel generator solenoid valve group calibration device according to claim 4, characterized in that: The air pressure display module (5) comprises a plurality of second pressure gauge displays (53) and a plurality of third pressure gauge displays (54) fixedly mounted on the control panel, and a plurality of second pressure gauges (51) and a plurality of third pressure gauges (52) fixedly mounted inside the box body; the number of the second pressure gauge displays (53) and the second pressure gauges (51) are the same and correspond one to one, and one second pressure gauge display (53) displays the reading of one second pressure gauge (51); the number of the third pressure gauge displays (54) and the third pressure gauges (52) are the same and correspond one to one, and one third pressure gauge display (54) displays the reading of a group of third pressure gauges (52); a first air pressure output port (22) comprises a third air pressure output port and a fourth air pressure output port; A second air pressure output port (61) includes a fifth air pressure output port and a sixth air pressure output port; a third air pressure output port corresponds to a fifth air pressure output port, and a fourth air pressure output port corresponds to a sixth air pressure output port; A third air pressure output port pipeline is connected to a fifth air pressure output port; A fourth air pressure output terminal pipeline is connected to a sixth air pressure output port; A second pressure gauge (51) is provided on a pipeline connecting a third air pressure output port and a fifth air pressure output port, and a third pressure gauge (52) is provided on a pipeline connecting a fourth air pressure output port and a sixth air pressure output port.

7. The nuclear power plant diesel generator solenoid valve group calibration device according to claim 6, characterized in that: A third air pressure output port is provided with a quick plug, a fourth air pressure output port is provided with a quick plug, a fifth air pressure output port is provided with a quick plug, and a sixth air pressure output port is provided with a quick plug.

8. The nuclear power plant diesel generator solenoid valve group calibration device according to claim 1, characterized in that: The power module (3) comprises an external power supply access circuit fixedly mounted inside a box body, and an external power supply access circuit input end (31) fixedly mounted on a control panel, a voltage regulator (33), a voltage and current reading display (34) and a plurality of power switches (32); the output end of the external power supply access circuit is connected to the input end circuit of the voltage regulator (33), and the output end of the voltage regulator (33) is respectively connected to the circuits of the power switches (32); the number of the power switches (32) and the number of the solenoid valves (42) are the same; the output end of the voltage regulator (33) is provided with a voltage and current reading display (34) for reading and displaying voltage signals and current signals.

9. The nuclear power plant diesel generator solenoid valve group calibration device according to any one of claims 1 to 8, characterized in that: The external power supply is a 24V DC power supply or a 220V AC power supply; when the external power supply is a 24V DC power supply, the power supply module (3) is connected to the external power supply circuit; when the external power supply is a 220V AC power supply, the power supply module (3) is connected to the external power supply through a power adapter circuit, and the power adapter converts the 220V AC power supply into a 24V DC power supply; the voltage regulation range of the power regulator is 0-24V.

10. The nuclear power plant diesel generator solenoid valve group calibration device according to any one of claims 2 to 8, characterized in that: The bottom of the box is equipped with universal wheels; the control panel can be detachably installed on the box.

Images