CN208254744U - A kind of swing check valve leak detection tool - Google Patents
A kind of swing check valve leak detection tool Download PDFInfo
- Publication number
- CN208254744U CN208254744U CN201820582356.4U CN201820582356U CN208254744U CN 208254744 U CN208254744 U CN 208254744U CN 201820582356 U CN201820582356 U CN 201820582356U CN 208254744 U CN208254744 U CN 208254744U
- Authority
- CN
- China
- Prior art keywords
- valve
- check valve
- swing check
- test
- seal plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to nuclear power detection fields, specifically disclose a kind of swing check valve leak detection tool, including blocking the seal plug in valve seat pipe side, the test valve deck being installed on valve seat, the nipple covered set on pet valve, the connection hose of connection screw thread connector and gas phase part leak detector, and connection seal plug and the connecting tube for testing valve deck.Utility model device energy real simulation valve formally returns the operating status after dress, accurately reflects valve and returns the true amount of leakage after dress, and then judges the maintenance effect of swing check valve, avoids repeating to repair and repeating dismounting valve.
Description
Technical field
The utility model belongs to nuclear power detection field, and in particular to a kind of swing check valve leak detection tool.
Background technique
Nuclear leve swing check valve is automatically switched flap by the flowing of medium itself, for preventing medium from flowing backwards.Core
Grade swing check valve played in the piping of PWR nuclear power plant primary Ioops auxiliary system limitation medium one-way flow, cut-off every
From effect, to achieve the purpose that protection system and equipment, so that system be made correctly to run.
Currently, PWR nuclear power plant swing check valve is widely used in the pipeline of nuclear power plant, to only in system pipeline
The leakproofness for returning valve has strict requirements, and most of swing check valve uses blue oil test's check valve sealing surface at present
Situation is overhauled, but blue oil test is the flap for returning seat valve door manually, differed greatly with the seat that normally returns of valve during normal operation,
And be only capable of judging the contact situation of sealing surface indirectly, it can not correctly reflect the state that valve normally returns after seat completely.If valve
System operation discovery valve leakage automatic inspection is larger after returning dress, and maintenance will waste a large amount of duration, human and material resources again, and cause big
The radioactive waste of amount.
Therefore blue oil test's qualification does not ensure that the slip of valve is good, and how to judge swing type non-return after overhauling
The leakproofness of valve becomes a great problem.
Summary of the invention
The purpose of this utility model is to provide a kind of swing check valve leak detection tools, can accurately measure swing type and stop
Return the leakage rate of valve.
The technical solution of the utility model is as follows:
A kind of swing check valve leak detection tool, the swing check valve include valve deck, valve seat and flap, swing type
The leakproofness of check-valves depends on flap and whether the stickiness of valve seat is good；Leak detection tool include seal plug, test valve deck,
Connecting tube, nipple and connection hose；
The seal plug is frustum cone structure, blocks the pipe side in valve seat, realizes the sealing to fluid side pipeline, shape
At test cavity；
The test valve deck is similar to the valve cover structure of swing check valve, is installed on valve seat；
It is covered in pet valve and opens up threaded hole, connection test cavity and outside；
Nipple is set in threaded hole, nipple is connect with gas phase part leak detector by connection hose, is used
It pressurizes in swing check valve；
The connecting tube connection seal plug and test valve deck.
Being sealed property of swing check valve is tested using air, the accurate leakage rate for measuring swing check valve should
The size of leakage rate when leakage rate can accurately reflect swing check valve actual motion.
The threaded hole is G3/8 threaded hole.
The connecting tube can simultaneously pull out seal plug when taking test valve deck away from valve seat, and taking-up is facilitated to seal
Plug.
The connecting tube is one of chain, long rope, hose.
The connecting tube can simultaneously pull out seal plug when taking test valve deck away from valve seat, and taking-up is facilitated to seal
Plug；Connecting tube is one of chain, long rope, hose；
The threaded hole is G3/8 threaded hole；
Being sealed property of swing check valve is tested using air, the accurate leakage rate for measuring swing check valve should
The size of leakage rate when leakage rate can accurately reflect swing check valve actual motion.
The utility model has the beneficial effects that:
(1) utility model device energy real simulation valve formally returns the operating status after dress, accurately reflects valve and returns dress
True amount of leakage afterwards, and then judge the maintenance effect of swing check valve, it avoids repeating to repair and repeating dismounting valve.
(2) it is hunted leak using utility model device, it is as a result accurately, convenient and efficient, it can effectively avoid overhauling wave again
Take a large amount of time, human and material resources, while avoiding generating a large amount of radioactive waste.
Detailed description of the invention
Fig. 1 is the utility model leak detection tool schematic diagram；
Fig. 2 is swing check valve schematic diagram.
In figure: 1 seal plug；2 test valve decks；3 connecting tubes；4 nipples；5 connection hoses；6. gas phase is locally hunted leak
Instrument；7. valve deck；8. valve seat；9. flap.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is described in further detail the utility model.
A kind of swing check valve leak detection tool as shown in Figure 1, including seal plug 1, test valve deck 2, connecting tube 3,
Nipple 4 and connection hose 5.The swing check valve, as shown in Fig. 2, including valve deck 7, valve seat 8 and flap 9, in weight
Power effect lower Disc 9 is fitted in the sealing of valve seat 8 naturally, the leakproofness of the valve depend on flap 9 and valve seat 8 stickiness whether
Well.
The seal plug 1 is frustum cone structure, blocks the pipe side in valve seat 8, can be realized to fluid side pipeline
Sealing forms test cavity.
The test valve deck 2 is similar to 7 structure of valve deck of swing check valve, is installed on valve seat 8.In test valve deck
Threaded hole, connection test cavity and outside are opened up on 2.Nipple 4 is set in threaded hole, by connecting hose 5 for screw thread
Connector 4 is connect with gas phase part leak detector 6, for pressurizeing to swing check valve.Being sealed property of valve is tried using air
It tests, the accurate leakage rate for measuring valve, the size of leakage rate when which can accurately reflect valve actual motion.It is described
Threaded hole be G3/8 threaded hole.
The connecting tube 3, can while will be close when taking test valve deck 2 away for connecting seal plug 1 and test valve deck 2
Block head 1 is pulled out from valve seat 8, is facilitated and is taken out seal plug 1.The connecting tube 3 can be chain, long rope or hose.
In swing check valve maintenance, the flap 9 of valve is returned into dress, then successively by seal plug 1, connecting tube 3, examination
The installation of valve deck 2 is tested to valve seat 8, then nipple 4 is installed to test valve deck 2, uses connection 5 connection screw thread connector of hose, 4 He
Then gas phase part leak detector 6 is tested the being sealed property of valve after the maintenance using air, accurate measurement maintenance late gate
Leakage rate.
Unqualified valve returns dress after the utility model swing check valve leak detection tool can effectively avoid maintenance, and practical
The big problem of swing check valve amount of leakage in operational process.
Claims (6)
1. a kind of swing check valve leak detection tool, the swing check valve includes valve deck (7), valve seat (8) and flap
(9), the leakproofness of swing check valve depends on flap (9) and whether the stickiness of valve seat (8) is good；It is characterized by: packet
Include seal plug (1), test valve deck (2), connecting tube (3), nipple (4) and connection hose (5)；
The seal plug (1) is frustum cone structure, blocks the pipe side in valve seat (8), realizes the sealing to fluid side pipeline,
Form test cavity；
The test valve deck (2) is similar to valve deck (7) structure of swing check valve, is installed on valve seat (8)；
Threaded hole, connection test cavity and outside are opened up in test valve deck (2)；
Nipple (4) are set in threaded hole, by connecting hose (5) for nipple (4) and gas phase part leak detector (6)
Connection, for pressurizeing to swing check valve；
Connecting tube (3) connection seal plug (1) and test valve deck (2).
2. a kind of swing check valve leak detection tool as described in claim 1, it is characterised in that: stopped using air to swing type
The test of being sealed property of valve, the accurate leakage rate for measuring swing check valve are returned, which can accurately reflect that swing type stops
Return valve actual motion when leakage rate size.
3. a kind of swing check valve leak detection tool as described in claim 1, it is characterised in that: the threaded hole is G3/8
Threaded hole.
4. a kind of swing check valve leak detection tool as described in claim 1, it is characterised in that: the connecting tube (3) exists
Seal plug (1) can be pulled out simultaneously from valve seat (8) when taking test valve deck (2) away, facilitate and take out seal plug (1).
5. a kind of swing check valve leak detection tool as claimed in claim 4, it is characterised in that: the connecting tube (3) is
One of chain, long rope, hose.
6. a kind of swing check valve leak detection tool as described in claim 1, it is characterised in that: the connecting tube (3) exists
Seal plug (1) can be pulled out simultaneously from valve seat (8) when taking test valve deck (2) away, facilitate and take out seal plug (1)；Connection
Managing (3) is one of chain, long rope, hose；
The threaded hole is G3/8 threaded hole；
Being sealed property of swing check valve is tested using air, the accurate leakage rate for measuring swing check valve, the leakage
Measure the size of leakage rate when can accurately reflect swing check valve actual motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820582356.4U CN208254744U (en) | 2018-04-23 | 2018-04-23 | A kind of swing check valve leak detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820582356.4U CN208254744U (en) | 2018-04-23 | 2018-04-23 | A kind of swing check valve leak detection tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208254744U true CN208254744U (en) | 2018-12-18 |
Family
ID=64636987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820582356.4U Active CN208254744U (en) | 2018-04-23 | 2018-04-23 | A kind of swing check valve leak detection tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208254744U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113409969A (en) * | 2021-02-05 | 2021-09-17 | 海南核电有限公司 | Nuclear power plant valve internal leakage fault diagnosis method |
-
2018
- 2018-04-23 CN CN201820582356.4U patent/CN208254744U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113409969A (en) * | 2021-02-05 | 2021-09-17 | 海南核电有限公司 | Nuclear power plant valve internal leakage fault diagnosis method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207263399U (en) | A kind of multistation valve airtight detection apparatus | |
| CN103915124B (en) | Nuclear power station conventional island demineralized water distribution system full cut-off repair method | |
| CN208254744U (en) | A kind of swing check valve leak detection tool | |
| CN113720555A (en) | Device and method for detecting internal leakage of ball valve of oil and gas pipeline | |
| CN103792082B (en) | Safety return-flow valve detection device and method | |
| CN202757736U (en) | Flange surface microscale leakage on-line monitoring system | |
| CN107883056A (en) | Safety valve real time on-line monitoring system and safety valve escape monitoring method | |
| CN209055285U (en) | A kind of experimental rig for examining valve high-low pressure to seal | |
| CN202928755U (en) | Device for testing seepage of non-return valve | |
| CN204461693U (en) | For the visual leakage detection apparatus leaked in the heat exchanger of food processing | |
| CN209247279U (en) | A kind of gate valve suppresses system online | |
| CN203979895U (en) | A kind of testing apparatus of pipe pressurized plugging effect | |
| CN207180958U (en) | The reverse pressure device of bellows safety valve | |
| CN106499889B (en) | A kind of safety valve pressure pilot system based on trepanning flange | |
| CN202101828U (en) | Verification apparatus used for pressure vessel safety valve | |
| CN216246995U (en) | Transformer pressure release ware verifying attachment | |
| CN104458163A (en) | Valve leakage detection device and detection method thereof | |
| CN208171542U (en) | A kind of movable oil pipe leak detector | |
| CN208270163U (en) | A kind of manual pressure testing device | |
| CN211347365U (en) | Safety valve pressure setting and sealing detection device | |
| CN201983912U (en) | Gas leakage detection device | |
| CN208503964U (en) | A kind of gasholder station pipe safety device | |
| CN207408079U (en) | A kind of experiment detection device | |
| CN202886079U (en) | Sealing performance test device of mechanical penetration pieces of safety shell in nuclear power station | |
| CA2639600A1 (en) | Testing apparatus and method for valves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |