CN104568423A - Two-position five-way valve detection device for hydrogen production unit - Google Patents
Two-position five-way valve detection device for hydrogen production unit Download PDFInfo
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- CN104568423A CN104568423A CN201510057067.3A CN201510057067A CN104568423A CN 104568423 A CN104568423 A CN 104568423A CN 201510057067 A CN201510057067 A CN 201510057067A CN 104568423 A CN104568423 A CN 104568423A
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Abstract
The invention relates to the field of detection of two-position five-way valves. In order to solve the problem that whether a two-position five-way valve for replacing a zero-crossing part or a spare part of the two-position five-way valve is reliable cannot be detected, the invention provides a two-position five-way valve detection device for the hydrogen production unit. The two-position five-way valve detection device comprises a compressed air source, a stop valve, a pressure gage, a power supply, a switch and a pneumatic valve, wherein the outlet of the compressed air source is communicated with the inlet of the stop valve; the outlet of the stop valve is communicated with an air inlet hole of a to-be-detected two-position five-way valve; the pressure gage is arranged at the outlet of the stop valve; two air holes of the pneumatic valve are respectively communicated with two working air holes of the to-be-detected two-position five-way valve; the power supply supplies power to the to-be-detected two-position five-way valve; and the switch controls on/off of the power supply circuit. When the device disclosed by the invention is used for detecting, the action process of the two-position five-way valve on the hydrogen production unit is simulated, so that the shutdown time of the hydrogen production unit is reduced, normal operation of the hydrogen production unit is guaranteed, and potential safety hazards brought to the operation of the hydrogen production unit due to use of faulted two-position five-way valves are eliminated.
Description
Technical field
The present invention relates to the Performance Detection field of the pneumatic valve control gear of the hydrogen manufacturing unit of Turbo-generator Set hydrogen in nuclear power station maintenance process, particularly relate to the Performance Detection field of two-position five-way pneumatic valve.
Background technology
In the hydrogen manufacturing unit production system running nuclear power station utility appliance, hydrogen is the important special media that supply generator group plays cooling and insulating effect.At this special dimension of hydrogen producing technology, because hydrogen itself has inflammable and explosive, workshop, hydrogen manufacturing unit place is made to be listed in the catastrophe risk place of inflammable and explosive danger.The peculiar technology manufactured according to hydrogen and the strict demand to safety anti-explosive standard, the execution valve of whole hydrogen manufacturing unit all performs switch with pneumatic valve or regulates action, and the power source of these pneumatic valves is all controlled by two-position five-way valve.Hydrogen manufacturing unit totally 14 cover two-position five-way valves is opened, is closed pneumatic valve and realize performing automatic control action; any one two-position five-way valve is had to occur exception or fault; the pneumatic valve be performed just can not obtain effective control of automatic or manual operation instruction execution signal; run the various functions controlled just can not effectively realize, thus have influence on the supply of hydrogen.
Hydrogen manufacturing unit is in operational process, two-position five-way valve is controlled by PLC, constantly open sweeping action between the next pass upper, and the material of the spool of two-position five-way valve is aluminium, be arranged on retracing spring on this aluminium matter spool and 3 rubber seal do reciprocating action under compressed-air actuated effect, wearing and tearing are very fast, often occur because gas leakage or dirty and stuck etc. controls failure.These problems can directly cause the pneumatic valve of each relevant control of hydrogen manufacturing unit break down warning and the phenomenon of chaser.Therefore, staff needs regularly shutdown to clean the retracing spring of two-position five-way valve and 3 rubber seal, lubricate or change.But shut down and parts maintain and replace is carried out to two-position five-way valve the emergency maintenance time of hydrogen manufacturing unit can be caused long, affect the normal air feed of hydrogen manufacturing unit.Because whether the two-position five-way valve of two-position five-way valve only after maintenance and installation completes and could verify this maintenance after hydrogen manufacturing unit operation changing parts can normally work; if the two-position five-way valve changing parts breaks down; just need to shut down again to overhaul; so namely, add on-site maintenance workload, in turn increase the security risk of operation.
If when two-position five-way valve needs integral replacing, staff needs the two-position five-way valve spare part stored in warehouse to take out to change.When design-build, for ensureing that hydrogen manufacturing unit can normally work within serviceable life, usually can purchase in a large number each parts in hydrogen manufacturing unit, then unification is deposited, so that staff can find acknowledgment copy in time when needs are changed.Two-position five-way valve is after long-time storage, may occur that O-ring seal is aging or the situation that lubricant is dry, not overhaul cannot learn that whether O-ring seal is aging or whether lubricant dries up, but frequent dismounting can cause again decline rapidly its serviceable life, can cause security incident problem time serious.Therefore, in order to ensure the serviceable life of two-position five-way valve, two-position five-way valve for subsequent use does not allow overhaul before use, just this just makes staff can only learn after the acknowledgment copy of two-position five-way valve is installed and used, whether this two-position five-way valve acknowledgment copy is reliable.
Summary of the invention
The acknowledgment copy whether reliably problem of two-position five-way valve or the two-position five-way valve changing parts can not be checked for solving prior art, the present invention proposes a kind of pick-up unit of hydrogen manufacturing unit two-position five-way valve, and the pick-up unit of this hydrogen manufacturing unit two-position five-way valve comprises compressed gas source, stop valve, tensimeter, power supply, switch and pneumatic valve; The outlet of described compressed gas source is connected with the entrance of described stop valve, the outlet of described stop valve is communicated with the air admission hole of two-position five-way valve to be detected, described tensimeter is arranged on the exit of described stop valve, two pores of described pneumatic valve are connected with two pores that work of two-position five-way valve to be detected respectively, described power supply is that described two-position five-way valve to be detected is powered, the on/off of the feed circuit of two-position five-way valve to be detected described in described switch control rule.
During use, each element of this pick-up unit is coupled together by pipeline, checks the impermeability of each connecting portion.The course of work of simulation two-position five-way valve on hydrogen manufacturing unit detects, detailed process is as follows: closed described switch, the solenoid of two-position five-way valve to be detected is energized, electromagnetic actuation, thus band movable valve plug moves to electromagnet direction, compression retracteding position spring, makes the air admission hole of two-position five-way valve to be detected (P hole) and first pore (A hole) that works be communicated with, and the second work pore (B hole) is communicated with the second venthole (S hole); After pressurized air flows out from the first work pore (A hole) of two-position five-way valve to be detected, enter in pneumatic valve with this first pore that pore (A hole) is communicated with that works on pneumatic valve, promote the valve core movement of pneumatic valve, when pressurized air continues to enter, the spool of pneumatic valve remains on duty now, pressurized air flows out through another pore of pneumatic valve, enter the second work pore (B hole) of two-position five-way valve to be detected, be discharged into the external world finally by with second the second venthole (S hole) that pore (B hole) is communicated with that works.Disconnect described switch, make the solenoid power-off of two-position five-way valve to be detected, electromagnet is without suction, spool moves to deviating from electromagnet direction under the effect of retracing spring, thus the air admission hole of two-position five-way valve to be detected (P hole) and second pore (B hole) that works is communicated with, the first work pore (A hole) is communicated with the first venthole (R hole), pressurized air enters from the air admission hole (P hole) of two-position five-way valve to be detected, after flowing out from the second work pore (B hole), enter in pneumatic valve with this second pore that pore (B hole) is communicated with that works on pneumatic valve, promote the valve core movement of pneumatic valve, when pressurized air continues to enter, the spool of pneumatic valve remains on duty now, pressurized air flows out through another pore of pneumatic valve, enter the first work pore (A hole) of two-position five-way valve to be detected, the external world is discharged into finally by with first the first venthole (R hole) that pore (A hole) is communicated with that works.In this plant running process, if two-position five-way valve to be detected has fault, then cannot complete this detection, the two-position five-way valve that need again overhaul or more renew.
When using the acknowledgment copy of hydrogen manufacturing unit two-position five-way valve pick-up unit of the present invention to the two-position five-way valve or two-position five-way valve of changing parts to carry out reliability detection; by the course of action of simulation two-position five-way valve on hydrogen manufacturing unit; decrease the stop time of hydrogen manufacturing unit; ensured the normal work of hydrogen manufacturing unit, avoiding to use has problem two-position five-way valve to operate the potential safety hazard brought to hydrogen manufacturing unit.
Preferably, the pick-up unit of described hydrogen manufacturing unit two-position five-way valve also comprises a pressure regulator valve, and described pressure regulator valve is arranged between described stop valve and two-position five-way valve to be detected.Described pressure regulator valve in order to ensure that the compressed-air actuated pressure entered in two-position five-way valve to be detected remains within the scope of the operating air pressure of this two-position five-way valve to be detected, thus is avoided causing damage to two-position five-way valve to be detected.
Preferably, the pick-up unit of described hydrogen manufacturing unit two-position five-way valve also comprises a clamping device, described clamping device comprises base plate and two pieces of clamping plate arranged in parallel, and described clamping plate are vertically set on described base plate, in order to clamp described two-position five-way valve to be detected.Actuating medium due to two-position five-way valve is pressurized air; therefore the spool of two-position five-way valve can produce certain impact in transpose process; if and two-position five-way valve to be detected self has fault; impact and likely can strengthen; described clamping device, in order to protect this two-position five-way valve to be detected, avoids two-position five-way valve to be detected to occur that springing is encountered surrounding component or caused the situation of damage with collision on the ground because of percussive action.
Further, the spacing between two pieces of described clamping plate is adjustable.Like this, described clamping device is when clamping two-position five-way valve to be detected, and clamping work is more convenient to be carried out, more convenient when clamping or take off two-position five-way valve to be detected.
Further, described clamping plate are provided with holding screw.After between two clamping plate two-position five-way valve to be detected being placed on clamping device, screw described holding screw, this two-position five-way valve to be detected is optionally further secured.
Further, the clamping face of described clamping plate is provided with the pad that flexible material is made.Described pad can prevent two-position five-way valve to be detected from by clamping process, occurring surface damage, protects two-position five-way valve to be detected better.
Further, described pad is rubber sheet gasket.During described pad employing quality of rubber materials, the pad of quality of rubber materials easily obtains and long service life.
Preferably, described compressed gas source is air pressure pump.Use air pressure pump as compressed gas source, make the compressed-air actuated pressure being transported to this pick-up unit comparatively stable, ensured the serviceable life of each element in this pick-up unit.
The pick-up unit of hydrogen manufacturing unit two-position five-way valve of the present invention is used to detect two-position five-way valve to be detected; can know whether the two-position five-way valve acknowledgment copy stored in the two-position five-way valve or warehouse having changed parts can normally work at short notice; avoid hydrogen manufacturing unit frequent shutdown to overhaul the situation of two-position five-way valve; improve overhaul efficiency, ensure production safety.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the pick-up unit of hydrogen manufacturing unit two-position five-way valve of the present invention;
Fig. 2 is the schematic front view of clamping device in the pick-up unit of hydrogen manufacturing unit two-position five-way valve of the present invention.
Embodiment
As depicted in figs. 1 and 2, a kind of pick-up unit of hydrogen manufacturing unit two-position five-way valve comprises compressed gas source 1, stop valve 2, tensimeter 3, power supply 4, switch 5, pneumatic valve 6, pressure regulator valve 8 and clamping device 9; Compressed gas source 1 can be air pressure pump, the outlet of compressed gas source 1 is connected with the entrance of stop valve 2, tensimeter 3 is arranged on the exit of stop valve 2, the air admission hole of pressure regulator valve 8 is connected with the venthole of stop valve 2, the venthole of pressure regulator valve 8 is connected with the air admission hole (P hole) of two-position five-way valve 7 to be detected, and two pores of pneumatic valve 8 are connected with two pores that work (A hole, B hole) of two-position five-way valve 7 to be detected respectively.Power supply 4 and switch 5 are in order to carry out the work of on/off electricity to the solenoid of two-position five-way valve 7 to be detected.Clamping device 9 comprises base plate 91, holding screw 93, rubber sheet gasket 94 and two pieces of clamping plate be arranged in parallel 92, clamping plate 92 are vertically set on base plate 91 and spacing between this two clamping plates 92 is adjustable, holding screw 93 is arranged on clamping plate 91, and rubber sheet gasket 94 is arranged on the clamping face of clamping plate 91.The pad that rubber sheet gasket 94 can be made with other flexible materials replaces.
During use, each element of this pick-up unit is coupled together by pipeline, checks the impermeability of each connecting portion.The course of work of simulation two-position five-way valve on hydrogen manufacturing unit detects, detailed process is as follows: Closing Switch 5, the solenoid of two-position five-way valve to be detected is energized, electromagnetic actuation, thus band movable valve plug moves to electromagnet direction, compression retracteding position spring, makes the air admission hole of two-position five-way valve 7 to be detected (P hole) and first pore (A hole) that works be communicated with, and the second work pore (B hole) is communicated with the second venthole (S hole), after pressurized air flows out from the first work pore (A hole) of two-position five-way valve 7 to be detected, enter in pneumatic valve 6 with this first pore working pneumatic valve 6 that pore (A hole) is communicated with on pneumatic valve 6, promote the valve core movement of pneumatic valve 6, when pressurized air continues to enter, the spool of pneumatic valve 6 remains on duty now, pressurized air flows out through another pore of pneumatic valve 6, enter the second work pore (B hole) of two-position five-way valve 7 to be detected, the external world is discharged into finally by with second the second venthole (S hole) that pore (B hole) is communicated with that works.Cut-off switch 5, make the solenoid power-off of two-position five-way valve 7 to be detected, electromagnet is without suction, spool moves to deviating from electromagnet direction under the effect of retracing spring, thus the air admission hole of two-position five-way valve 7 to be detected (P hole) and second pore (B hole) that works is communicated with, the first work pore (A hole) is communicated with the first venthole (R hole), pressurized air enters from the air admission hole (P hole) of two-position five-way valve 7 to be detected, after flowing out from the second work pore (B hole), enter in pneumatic valve 6 with this second pore working pneumatic valve 6 that pore (B hole) is communicated with on pneumatic valve 6, promote the valve core movement of pneumatic valve 6, when pressurized air continues to enter, the spool of pneumatic valve 6 remains on duty now, pressurized air flows out through another pore of pneumatic valve 6, enter the first work pore (A hole) of two-position five-way valve 7 to be detected, the external world is discharged into finally by with first the first venthole (R hole) that pore (A hole) is communicated with that works.In this plant running process, if two-position five-way valve to be detected has fault, then cannot complete this detection, the two-position five-way valve that need again overhaul or more renew.
When using the acknowledgment copy of hydrogen manufacturing unit two-position five-way valve pick-up unit of the present invention to the two-position five-way valve or two-position five-way valve of changing parts to carry out reliability detection, by the course of action of simulation two-position five-way valve on hydrogen manufacturing unit, can know whether the two-position five-way valve acknowledgment copy stored in the two-position five-way valve or warehouse having changed parts can normally work at short notice, decrease the stop time of hydrogen manufacturing unit, avoid hydrogen manufacturing unit frequent shutdown to overhaul the situation of two-position five-way valve, ensure the normal work of hydrogen manufacturing unit, improve overhaul efficiency, decrease to use has problem two-position five-way valve to operate the potential safety hazard brought to hydrogen manufacturing unit simultaneously, ensure production safety.
Claims (8)
1. a pick-up unit for hydrogen manufacturing unit two-position five-way valve, is characterized in that, the pick-up unit of this hydrogen manufacturing unit two-position five-way valve comprises compressed gas source, stop valve, tensimeter, power supply, switch and pneumatic valve; The outlet of described compressed gas source is connected with the entrance of described stop valve, the outlet of described stop valve is communicated with the air admission hole of two-position five-way valve to be detected, described tensimeter is arranged on the exit of described stop valve, and two pores of described pneumatic valve are connected with two pores that work of two-position five-way valve to be detected respectively; Described power supply is that described two-position five-way valve to be detected is powered, the on/off of the feed circuit of two-position five-way valve to be detected described in described switch control rule.
2. the pick-up unit of hydrogen manufacturing unit two-position five-way valve according to claim 1, it is characterized in that, the pick-up unit of this hydrogen manufacturing unit two-position five-way valve also comprises a pressure regulator valve, and described pressure regulator valve is arranged between described stop valve and two-position five-way valve to be detected.
3. the pick-up unit of hydrogen manufacturing unit two-position five-way valve according to claim 1, it is characterized in that, the pick-up unit of this hydrogen manufacturing unit two-position five-way valve also comprises a clamping device, described clamping device comprises base plate and two pieces of clamping plate arranged in parallel, described clamping plate are vertically set on described base plate, in order to clamp described two-position five-way valve to be detected.
4. the pick-up unit of hydrogen manufacturing unit two-position five-way valve according to claim 3, is characterized in that, the spacing between two pieces of described clamping plate is adjustable.
5. the pick-up unit of hydrogen manufacturing unit two-position five-way valve according to claim 3, is characterized in that, described clamping plate are provided with holding screw.
6. the pick-up unit of hydrogen manufacturing unit two-position five-way valve according to claim 3, is characterized in that, the clamping face of described clamping plate is provided with the pad that flexible material is made.
7. the pick-up unit of hydrogen manufacturing unit two-position five-way valve according to claim 6, is characterized in that, described pad is rubber sheet gasket.
8. the pick-up unit of hydrogen manufacturing unit two-position five-way valve according to claim 1, is characterized in that, described compressed gas source is air pressure pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057067.3A CN104568423A (en) | 2015-02-03 | 2015-02-03 | Two-position five-way valve detection device for hydrogen production unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510057067.3A CN104568423A (en) | 2015-02-03 | 2015-02-03 | Two-position five-way valve detection device for hydrogen production unit |
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| CN104568423A true CN104568423A (en) | 2015-04-29 |
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| CN201510057067.3A Pending CN104568423A (en) | 2015-02-03 | 2015-02-03 | Two-position five-way valve detection device for hydrogen production unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114046374A (en) * | 2021-10-28 | 2022-02-15 | 苏州热工研究院有限公司 | Nuclear power unit power supply system based on electromagnetic valve and pneumatic electromagnetic valve |
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Cited By (2)
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| CN114046374B (en) * | 2021-10-28 | 2024-02-13 | 苏州热工研究院有限公司 | Nuclear power unit power supply system based on electromagnetic valve and pneumatic electromagnetic valve |
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Address after: 518124 Guangdong city of Shenzhen province Luohu District Buxin East Garden Building 37 Applicant after: Center maintenance Co., Ltd Address before: 518124 Guangdong city of Shenzhen province Luohu District Buxin East Garden Building 37 Applicant before: CHINA NATIONAL NUCLEAR CORPORATION SHENZHEN 23 NUCLEAR POWER INSPECTION AND MAINTENANCE CO., LTD. |
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Free format text: CORRECT: APPLICANT; FROM: CHINA NATIONAL NUCLEAR CORPORATION SHENZHEN 23 NUCLEAR POWER INSPECTION AND MAINTENANCE CO., LTD. TO: CHINA NUCLEAR INDUSTRY MAINTENANCE CO., LTD. |
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Application publication date: 20150429 |