CN204731018U - Pilot valve and main valve on-line testing device in pilot operated safety valve - Google Patents
Pilot valve and main valve on-line testing device in pilot operated safety valve Download PDFInfo
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- CN204731018U CN204731018U CN201520490163.2U CN201520490163U CN204731018U CN 204731018 U CN204731018 U CN 204731018U CN 201520490163 U CN201520490163 U CN 201520490163U CN 204731018 U CN204731018 U CN 204731018U
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 238000012795 verification Methods 0.000 claims abstract description 54
- 239000007789 gas Substances 0.000 claims abstract description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 12
- 239000000126 substance Substances 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009699 differential effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Safety Valves (AREA)
Abstract
The utility model discloses pilot valve and main valve on-line testing device in a kind of pilot operated safety valve, comprise pilot operated safety valve, described pilot operated safety valve is provided with main valve, pilot valve and the connecting line 6 both connection, also comprises nitrogen cylinder and gas control unit.The utility model controls pilot valve verification switch respectively, main valve verification switch, adopt specific three kinds of different methods of calibration, realize independent adjustment pilot valve set-pressure, simultaneously adjustment pilot valve and main valve set-pressure or simultaneously check pilot valve and main valve sealing, and the function that can realize the adjustment of safety valve sealing load, verification accuracy is high, also possess easy to carry simultaneously, easy and simple to handle, be applicable to very much being applied to complex environment as oil, chemical industry, the industrial control fields such as electric power, overcome existing pilot operated safety valve and cannot carry out on-line testing on pipeline, needs dismounting is transported to check bit off-line verification, install back the problem of pipeline again, meet the active demand of existing pilot operated safety valve on-line testing.
Description
Technical field
The utility model relates to a kind of calibration equipment, particularly relates to pilot valve and main valve on-line testing device in a kind of pilot operated safety valve.
Background technology
Safety valve is the overpressure protection apparatus being widely used in bearing device in electric power, petroleum chemical industry, is the guarantee of system safety operation.The periodic check of safety valve ensures that can safety valve accurately and reliably work, and eliminates the important measures of protected press device potential safety hazard.Pilot operated safety valve, on the matrix of common spring safety valve, has set up pilot mechanism.Be characterized in: action accurately and reliably; Sealing property is fundamentally improved; Blowdown of a safety valve is easy to meet the demands; Be active in one's movements, discharge capacity is large.Pilot operated safety valve is made up of main valve, pilot valve, bleeder valve, joint and conduit etc.In normal conditions, the pressure medium of system had both acted on the below of main valve clack, acted on again the top of main valve clack.Because main valve clack upper plenum medium active area is greater than lower dielectric active area, under pressure differential effect, main valve clack is in closed condition.Along with the rising of pipe medium pressure, then the seal pressure that sealing pair obtains also will along with rising, and this and spring loaded safe valve are just in time contrary, and namely more high sealing is more reliable for pressure medium.When pipe medium pressure is abnormal, when meeting or exceeding set-pressure, the upper flap of pilot valve is opened rapidly, medium in main valve clack upper plenum is discharged rapidly by the exhaust joint of pilot valve, main valve clack is under the forceful action of lower dielectric pressure, and instantaneous unlatching, discharges rapidly in a large number by the outlet of medium from main valve, make ducted pressure medium return to normal working pressure, ensure that the safety of system.When pipe medium pressure drops to set-pressure about 90% of default, on pilot valve, flap is closed, and pipeline medium enters the air chamber above main valve clack by pilot valve again.Under the effect of pressure differential, main valve is closed, and ensure that the normal work of system.
According to the design feature of pilot operated safety valve, pilot operated safety valve verify time actual can carry out adjust setting be only pilot valve, therefore the force value of adjustment pilot valve be pilot operated safety valve verification gordian technique and difficult point.Be at present all that pilot operated safety valve entirety is pulled down pipeline or container to the verification of pilot operated safety valve, then be transported to off-line checking table and carry out off-line verification,
Safety valve is arranged on off-line checking table by off-line verification exactly, then uses verification medium, by the main valve valve pocket air inlet of pilot operated safety valve, safety valve is opened, and confirms opening pressure and sealing load by observing tensimeter.This method can not realize the on-line testing of pilot operated safety valve, also cannot measure the pilot valve of pilot operated safety valve or the sealing property of main valve and set-pressure respectively, can not measure separately the pilot valve force value of pilot operated safety valve.In addition, because safety valve is installed and the restriction of service condition, safety valve dismounting, lifting and install comparatively difficulty, workload is large, and verification cost is high, and check-verifying period is long.
Summary of the invention
The purpose of this utility model is just to provide one to solve the problem, solve the restriction due to safety valve installation and service condition, the dismounting of safety valve, lifting and comparatively difficulty is installed, workload is large, verification cost is high, pilot valve and main valve on-line testing device and method of calibration in a kind of pilot operated safety valve of the problem that check-verifying period is long.
To achieve these goals, the technical solution adopted in the utility model is such: pilot valve and main valve on-line testing device in a kind of pilot operated safety valve, comprise pilot operated safety valve, described pilot operated safety valve is provided with main valve, pilot valve and the connecting line 6 both connection, also comprises nitrogen cylinder and gas control unit;
Described gas control unit comprises microprocessor, display and a source of the gas tracheae, described source of the gas tracheae one end connects nitrogen cylinder, the other end connects a bleed pressure sensor and pilot valve verification switch respectively by threeway, described pilot valve verification switch is divided into three tunnels away from one end of threeway by a four-way, wherein leading up to a pilot valve gas path pipe and pilot valve removably connects, described pilot valve gas path pipe is provided with pilot valve pressure transducer, two-way verifies switch with main valve respectively in addition, compression relief cock connects, described main valve verification switch is removably connected by a main valve gas path pipe and main valve away from one end of four-way, described main valve gas path pipe is provided with main valve pressure transducer, described bleed pressure sensor, pilot valve pressure transducer, main valve pressure transducer is all connected with microprocessor with display.
As preferably: also comprise a housing, described microprocessor is positioned at housing, display, main valve verification switch and pilot valve verification switch are all positioned at housing exterior walls.
Pilot valve and main valve on-line testing method in a kind of pilot operated safety valve, comprise the following steps:
(1) close pilot operated safety valve root stop valve, observe on pilot operated safety valve whether be reserved with on-line testing special purpose interface, be then enter step (4), otherwise enter step (2);
(2) slowly loosen the connecting line 6 between main valve and pilot valve, monitor main valve and be connected the exhaust sound that tracheae loosens place with pilot valve;
(3) if exhaust sound continues not change, then the screw thread of the connection tracheae recovered between main valve and pilot valve seals, and tentatively judges this safety valve root stop valve bad seals, need carry out on-line testing by after the reparation of root stop valve; If can obviously hear, exhaust sound reduces, then suitably continue to loosen thread, until completely not after exhaust sound, unload the connection tracheae between main valve and pilot valve;
(4) select appropriate crossover sub, described crossover sub is the joint that main valve gas path pipe is connected with main valve, pilot valve gas path pipe is connected with pilot valve, and closes main valve verification switch and pilot valve verification switch;
(5) pilot valve is connected with pilot valve gas path pipe, main valve is connected with main valve gas path pipe;
(6) slowly nitrogen cylinder switch is opened, until all open;
(7) simultaneously Checking and Adjustment pressure or pilot valve and main valve sealing load and the dirigibility inspection of the independent Checking and Adjustment pressure of pilot valve, pilot valve and main valve is carried out.
As preferably: in described step (7), the independent Checking and Adjustment pressure of pilot valve is specially:
(1) slowly open pilot valve verification switch, when gas reaches 50% of the safety valve setting setting valve of user's request, close pilot valve verification switch, airtight test is done to all links;
(2) if poor air-tightness, after compression relief cock pressure release, reseal connection, and be back to step (1); If impermeability is good, then calibration of set-pressure is carried out to pilot valve, concrete grammar is the intake pressure slowly raising safety valve, after boosting to 90% of safety valve setting set-pressure, when measuring pilot valve flap and having the continuous discharge opening or see, hear test(ing) medium, then the intake pressure of safety valve is the set-pressure of tested pilot valve; Described safety valve intake pressure is the pressure that nitrogen cylinder and pilot valve verify junction, switch place, and pressure is by bleed pressure Sensor monitoring.
As preferably: in described step (7), pilot valve and main valve simultaneously Checking and Adjustment pressure are specially:
(1) main valve verification switch is all opened;
(2) slowly open pilot valve verification switch, when reaching 50% of safety valve setting setting valve, closing pilot valve verification switch, airtight test is done to all links;
(3) if poor air-tightness, after compression relief cock pressure release, reseal connection, and be back to step (2); If impermeability is good, concrete grammar is the intake pressure slowly raising safety valve, after boosting to 90% of safety valve setting set-pressure, when measure pilot valve flap have open or see, hear the continuous discharge of test(ing) medium time, then the intake pressure of safety valve is regarded as pilot valve and the common set-pressure of main valve.
As preferably: in described step (7), pilot valve and main valve sealing and dirigibility inspection are specially:
After set-pressure adjustment is qualified, reduces and adjust safety valve intake pressure, carrying out sealing and dirigibility inspection, when set-pressure is less than or equal to 0.3Mpa, seal test pressure should 0.03Mpa lower than set-pressure; When set-pressure is greater than 0.3Mpa, seal test pressure is 90% set-pressure;
Idiographic flow is:
(1) main valve verification switch is all opened;
(2) slowly open pilot valve verification switch, when reaching 50% of safety valve setting setting valve, closing pilot valve verification switch, airtight test is done to all links;
(3) if poor air-tightness, after compression relief cock pressure release, reseal connection, and be back to step (2); If impermeability is good, concrete grammar be slowly raise safety valve intake pressure, after boosting to 90% of the setting valve of safety valve setting, stop boosting;
(4) carry out performing leak test, be specially: click the sealing button on display, start timing, after timing terminates, according to the original pressure of display and at the end of pressure, and the slip automatically calculated, judges that whether sealing qualified.
(5) after performing leak test terminates, close main valve verification switch, slowly open compression relief cock, now pilot valve starts pressure release, observes the display of main valve pressure simultaneously, when pilot valve pressure drop, main valve pressure also should reduce simultaneously, then the activity of main valve is good, otherwise, main valve may have adhesion phenomenon, needs to carry out maintenance process to main valve.
As preferably: when set-pressure is less than or equal to 0.5Mpa, actual measurement setting valve with require that the permissible error of setting valve is for ± 0.015Mpa; When set-pressure is greater than 0.5Mpa, surveys setting valve and require that the permissible error of setting valve is ± 0.03Mpa.
Compared with prior art, the utility model has the advantage of: the utility model does not need to dismantle pilot operated safety valve, only need by simple structure, both can to have realized in pilot operated safety valve Checking and Adjustment pressure or pilot valve and main valve sealing load and the dirigibility inspection simultaneously of the independent Checking and Adjustment pressure of pilot valve, pilot valve and main valve.Alleviate labour intensity during verification greatly, especially large for bore, the safety valve that installation position sets high, shorten checking time simultaneously, intuitively can judge main valve fault or the failing pilot valve of pilot operated safety valve respectively, whole device is easy to carry, and checking data is accurately perfect, fully solve the field-checking difficult problem that safety valve uses enterprise, the production safety of the energy each industrial and mining enterprises of powerful guarantee.
Accompanying drawing explanation
Fig. 1 is the utility model pilot operated safety valve structural representation;
Fig. 2 is the utility model apparatus structure schematic diagram;
Fig. 3 is the utility model process flow diagram;
Fig. 4 is the process flow diagram carrying out the independent Checking and Adjustment pressure of pilot valve in Fig. 3;
The process flow diagram of Checking and Adjustment pressure while that Fig. 5 being pilot valve and main valve in Fig. 3;
Fig. 6 is the process flow diagram that in Fig. 3, pilot valve and main valve sealing load and dirigibility check.
In figure: 1, valve body; 2, valve seat; 3, main valve; 4, bleeder valve; 5, pilot valve; 6, connecting line 6.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment 1: see Fig. 1 and Fig. 2, pilot valve and main valve on-line testing device in a kind of pilot operated safety valve, comprise pilot operated safety valve, described pilot operated safety valve is provided with main valve 3, pilot valve 5 and connecting line 6, valve body 1, valve seat 2, bleeder valve 4 both connection, also comprises nitrogen cylinder and gas control unit, described gas control unit comprises microprocessor, display and a source of the gas tracheae, described source of the gas tracheae one end connects nitrogen cylinder, the other end connects a bleed pressure sensor and pilot valve verification switch respectively by threeway, described pilot valve verification switch is divided into three tunnels away from one end of threeway by a four-way, wherein leading up to a pilot valve gas path pipe and pilot valve 5 removably connects, described pilot valve gas path pipe is provided with pilot valve pressure transducer, two-way verifies switch with main valve respectively in addition, compression relief cock connects, described main valve verification switch is removably connected by a main valve gas path pipe and main valve 3 away from one end of four-way, described main valve gas path pipe is provided with main valve pressure transducer, described bleed pressure sensor, pilot valve pressure transducer, main valve pressure transducer is all connected with microprocessor with display.In the utility model, also comprise a housing, described microprocessor is positioned at housing, and display, main valve verification switch and pilot valve verification switch are all positioned at housing exterior walls.
In the utility model, display adopts touch screen display, be connected with micro-process, people can send steering order by display, completed by Microprocessor S3C44B0X, wherein, the force value that microprocessor can control bleed pressure sensor, pilot valve pressure transducer, main valve pressure transducer gather its installation place, coordinate predetermined software, complete the functions such as setting valve measurement, impermeability judgement.
See Fig. 3, Fig. 4, Fig. 5 and Fig. 6, pilot valve and main valve on-line testing method in a kind of pilot operated safety valve, comprise the following steps:
(1) close pilot operated safety valve root stop valve, observe on pilot operated safety valve whether be reserved with on-line testing special purpose interface, be then enter step (4), otherwise enter step (2);
(2) slowly loosen the connecting line 6 between main valve 3 and pilot valve 5, monitor main valve 3 and be connected with pilot valve 5 exhaust sound that tracheae loosens place;
(3) if exhaust sound continues not change, then the screw thread of the connection tracheae recovered between main valve 3 and pilot valve 5 seals, and tentatively judges this safety valve root stop valve bad seals, need carry out on-line testing by after the reparation of root stop valve; If can obviously hear, exhaust sound reduces, then suitably continue to loosen thread, until completely not after exhaust sound, unload the connection tracheae between main valve 3 and pilot valve 5; Two kinds of exhaust situation that this step has occurred when having set forth dismounting connecting line 6, thus reach and judge that safety valve root stop valve seals the object whether damaged; Before above step (1) (2) (3) are the utility model calibration equipment and inspection pilot operated safety valve, the preliminary work of pilot operated safety valve, above step achieves the disconnection to connecting line 6 between main valve 3 and pilot valve 5, judges whether the sealing of safety valve root stop valve is impaired simultaneously;
(4) select appropriate crossover sub, described crossover sub is the joint that main valve gas path pipe is connected with main valve 3, pilot valve gas path pipe is connected with pilot valve 5, and closes main valve verification switch and pilot valve verification switch;
(5) pilot valve 5 is connected with pilot valve gas path pipe, main valve 3 is connected with main valve gas path pipe; Now, the connection by pilot valve in pilot operated safety valve 5 and main valve on-line testing device and pilot operated safety valve is achieved;
(6) slowly nitrogen cylinder switch is opened, until all open;
(7) pilot valve 5 separately Checking and Adjustment pressure, pilot valve 5 and main valve 3 Checking and Adjustment pressure or pilot valve 5 and main valve 3 sealing load and dirigibility inspection is simultaneously carried out.
In the utility model in step (7): pilot valve 5 separately Checking and Adjustment pressure is specially:
(1) slowly open pilot valve verification switch, when gas reaches 50% of safety valve setting setting valve, close pilot valve verification switch, airtight test is done to all links;
(2) if poor air-tightness, after compression relief cock pressure release, reseal connection, and be back to step (1); If impermeability is good, then calibration of set-pressure is carried out to pilot valve 5, concrete grammar is the intake pressure slowly raising safety valve, after boosting to 90% of safety valve setting set-pressure, when measuring pilot valve 5 flap and having the continuous discharge opening or see, hear test(ing) medium, then the intake pressure of safety valve is the set-pressure of tested pilot valve 5; Described safety valve intake pressure is the pressure that nitrogen cylinder and pilot valve verify junction, switch place, and pressure is by bleed pressure Sensor monitoring.
Wherein, when set-pressure is less than or equal to 0.5Mpa, surveys setting valve and require that the permissible error of setting valve is ± 0.015Mpa; When set-pressure is greater than 0.5Mpa, surveys setting valve and require that the permissible error of setting valve is ± 0.03Mpa.
In the utility model in step (7), pilot valve 5 and main valve 3 simultaneously Checking and Adjustment pressure are specially:
(1) main valve verification switch is all opened;
(2) slowly open pilot valve verification switch, when reaching 50% of safety valve setting setting valve, closing pilot valve verification switch, airtight test is done to all links;
(3) if poor air-tightness, after compression relief cock pressure release, reseal connection, and be back to step (2); If impermeability is good, concrete grammar is the intake pressure slowly raising safety valve, after boosting to 90% of safety valve setting set-pressure, when measure pilot valve 5 flap have open or see, hear the continuous discharge of test(ing) medium time, then the intake pressure of safety valve is regarded as pilot valve 5 and the common set-pressure of main valve 3.
Wherein, when set-pressure is less than or equal to 0.5Mpa, surveys setting valve and require that the permissible error of setting valve is ± 0.015Mpa; When set-pressure is greater than 0.5Mpa, surveys setting valve and require that the permissible error of setting valve is ± 0.03Mpa.
In the utility model in step (7), pilot operated safety valve pilot valve 5 and main valve 3 sealing and dirigibility inspection are specially:
After set-pressure adjustment is qualified, reduces and adjust safety valve intake pressure, carrying out sealing and dirigibility inspection, when set-pressure is less than or equal to 0.3Mpa, seal test pressure should 0.03Mpa lower than set-pressure; When set-pressure is greater than 0.3Mpa, seal test pressure is 90% set-pressure;
Idiographic flow is:
(1) main valve verification switch is all opened;
(2) slowly open pilot valve verification switch, when reaching 50% of safety valve setting setting valve, closing pilot valve verification switch, airtight test is done to all links;
(3) if poor air-tightness, after compression relief cock pressure release, reseal connection, and be back to step (2); If impermeability is good, concrete grammar be slowly raise safety valve intake pressure, after boosting to 90% of the setting valve of safety valve setting, stop boosting;
(4) carry out performing leak test, be specially: click the sealing button on display, start timing, after timing terminates, according to the original pressure of display and at the end of pressure, and the slip automatically calculated, judges that whether sealing qualified.
(5) after performing leak test terminates, close main valve verification switch, slowly open compression relief cock, now pilot valve 5 starts pressure release, observes the display of main valve 3 pressure simultaneously, when pilot valve 5 pressure drop, main valve 3 pressure also should reduce simultaneously, then the activity of main valve 3 is good, otherwise, main valve 3 may have adhesion phenomenon, needs to carry out maintenance process to main valve 3.
To verify the pilot operated safety valve of a common DN80.The contrast that original off-line School Affairs uses this device to carry out on-line testing sees table 1:
Table 1: this device of off-line School Affairs on-line testing contrast table
Illustrate: off-line verification dismounting, set-up time is long, only the take-down time at least needs about 30 minutes, in addition due to the distance problem of erecting stage and check bit, general censorship all needs more than 1 hour, when without the need to waiting in line verification, namely namely deliver to check bit to verify immediately, verification needs about 10 minutes consuming time, scene is returned to again through 1 hour, carry out being provided with and need 30 minutes consuming time, in this transportation, pipeline or container are in the state without safety valve protection, therefore there is larger production safety risk, safety valve is in transportation simultaneously, due to factors such as vibrations, the set-pressure value of safety valve may be caused to change, also there is certain potential safety hazard.And on-line testing only needs to dismantle the connecting line 6 between the main valve of safety valve and pilot valve, safety valve body is not dismantled, therefore verification personnel get final product complete operation, simple and quick, whole checking procedure from dismounting, verification, resuming work to safety valve only needs about 15 minutes.
Claims (2)
1. pilot valve and a main valve on-line testing device in pilot operated safety valve, comprise pilot operated safety valve, and described pilot operated safety valve is provided with main valve, pilot valve and the connecting line 6 both connection, it is characterized in that: also comprise nitrogen cylinder and gas control unit;
Described gas control unit comprises microprocessor, display and a source of the gas tracheae, described source of the gas tracheae one end connects nitrogen cylinder, the other end connects a bleed pressure sensor and pilot valve verification switch respectively by threeway, described pilot valve verification switch is divided into three tunnels away from one end of threeway by a four-way, wherein leading up to a pilot valve gas path pipe and pilot valve removably connects, described pilot valve gas path pipe is provided with pilot valve pressure transducer, two-way verifies switch with main valve respectively in addition, compression relief cock connects, described main valve verification switch is removably connected by a main valve gas path pipe and main valve away from one end of four-way, described main valve gas path pipe is provided with main valve pressure transducer, described bleed pressure sensor, pilot valve pressure transducer, main valve pressure transducer is all connected with microprocessor with display.
2. pilot valve and main valve on-line testing device in pilot operated safety valve according to claim 1, it is characterized in that: also comprise a housing, described microprocessor is positioned at housing, and display, main valve verification switch and pilot valve verification switch are all positioned at housing exterior walls.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490163.2U CN204731018U (en) | 2015-07-09 | 2015-07-09 | Pilot valve and main valve on-line testing device in pilot operated safety valve |
| DE202015107155.8U DE202015107155U1 (en) | 2015-07-09 | 2015-12-31 | In-line calibration device for pilot valve and main valve of a pilot-operated safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490163.2U CN204731018U (en) | 2015-07-09 | 2015-07-09 | Pilot valve and main valve on-line testing device in pilot operated safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204731018U true CN204731018U (en) | 2015-10-28 |
Family
ID=54389358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520490163.2U Expired - Fee Related CN204731018U (en) | 2015-07-09 | 2015-07-09 | Pilot valve and main valve on-line testing device in pilot operated safety valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204731018U (en) |
| DE (1) | DE202015107155U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949831A (en) * | 2015-07-09 | 2015-09-30 | 成都施泰欧科技有限公司 | Online checking device and methods for pilot valve and main valve of pilot operated safety valve |
| CN111721525A (en) * | 2020-08-10 | 2020-09-29 | 罗浮阀门集团有限公司 | Pilot valve performance test device and test method |
-
2015
- 2015-07-09 CN CN201520490163.2U patent/CN204731018U/en not_active Expired - Fee Related
- 2015-12-31 DE DE202015107155.8U patent/DE202015107155U1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949831A (en) * | 2015-07-09 | 2015-09-30 | 成都施泰欧科技有限公司 | Online checking device and methods for pilot valve and main valve of pilot operated safety valve |
| CN111721525A (en) * | 2020-08-10 | 2020-09-29 | 罗浮阀门集团有限公司 | Pilot valve performance test device and test method |
| CN111721525B (en) * | 2020-08-10 | 2022-07-15 | 罗浮阀门集团有限公司 | Pilot valve performance test device and test method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202015107155U1 (en) | 2016-02-01 |
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Granted publication date: 20151028 |