CN209247250U - A kind of nuclear power station-service welded check valve leak tightness test device - Google Patents
A kind of nuclear power station-service welded check valve leak tightness test device Download PDFInfo
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- CN209247250U CN209247250U CN201822191165.8U CN201822191165U CN209247250U CN 209247250 U CN209247250 U CN 209247250U CN 201822191165 U CN201822191165 U CN 201822191165U CN 209247250 U CN209247250 U CN 209247250U
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- locking flange
- metal hose
- check valve
- nuclear power
- service
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Abstract
The utility model belongs to the voltage-controlled technical field of nuclear power plant's instrument, and in particular to a kind of nuclear power station-service welded check valve leak tightness test device.Including metal hose A, locking flange A, locking flange B, metal hose B, test-bed and water tank；Lift check valve is scheduled on test-bed by locking flange A and locking flange B to clamping, and metal hose A and metal hose B are connect with locking flange A locking flange B respectively；Metal hose B is protruded into water tank；Metal hose A connection gas source.The utility model can test whether welded check valve leaks, if leakage, whether slip meets design requirement range, if being tested again after being ground not in range.Before the invention of this tool, due to being unable to measure slip, if oil leak defect occurs for check-valves, whole valve can only be replaced；The availability of check-valves can be judged according to leakage situation now, no replacement is required if slip meets the requirements whole valve saves production cost.
Description
Technical field
The utility model belongs to the voltage-controlled technical field of nuclear power plant's instrument, and in particular to a kind of nuclear power station-service welded check valve is close
Envelope property experimental rig.
Background technique
Lift check valve is suitable on nuclear power system official road, as the reliability of control media flow, when medium fair current
When open flap by medium pressure itself, make flow of media；When there is reflux, flap decline, while leaning on the pressure of medium back flow
Flap back is acted on, flap and valve base sealing are made, reaches non-return throttling purpose.
Domestic more nuclear power plants, as nuclear island instrument compressed air system major loop isolating valve, prevent from being stained with using lift check valve
Dirty nuclear island instrument presses backlash stream.
According to the design manual of producer, the slip 0.1ml/h of check-valves setting investigates domestic pharmaceutical industry nuclear power plant, by
Air-tight test can not be carried out in the check-valves, therefore only replaces whole valve spare part when leakage defect occurs for the valve, and can not
It is individually replaced its internal seal assembly, virtually also increases production cost.
Summary of the invention
The purpose of this utility model is to provide a kind of nuclear power station-service welded check valve leak tightness test devices, realize lifting
The inspection of formula check valve sealing and slip detection.
In order to achieve the above objectives, technical solution adopted in the utility model are as follows:
A kind of nuclear power station-service welded check valve leak tightness test device, including metal hose A, locking flange A, locking flange
B, metal hose B, test-bed and water tank；Lift check valve is by locking flange A and locking flange B to clamping due to test
On rack, metal hose A and metal hose B are connect with locking flange A locking flange B respectively；Metal hose B is protruded into water tank；
Metal hose A connection gas source.
The inlet and outlet of the locking flange A and locking flange B and lift check valve pass through gasket seal A and close respectively
Gasket B sealing.
The metal hose A and metal hose B is threadedly coupled with locking flange A and locking flange B by loose joint respectively.
It is had the beneficial effect that acquired by the utility model
The tool can test whether welded check valve leaks, if leakage, whether slip meets design requirement range, if not
In range, then tested again after being ground.Before the invention of this tool, due to being unable to measure slip, if check-valves
Oil leak defect occurs, whole valve can only be replaced.The availability that can judge check-valves according to leakage situation now, if slip meets
It is required that then no replacement is required whole valve, saves production cost.
Detailed description of the invention
Fig. 1 is nuclear power station-service welded check valve leak tightness test device structure chart；
In figure: 1, metal hose A；2, flange A is locked；3, gasket seal A；4, lift check valve；5, gasket seal B；
6, flange B is locked；7, metal hose B；8, test-bed；9 water tanks.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, nuclear power station-service welded check valve leak tightness test device described in the utility model includes metal hose
A1, locking flange A2, gasket seal A3, lift check valve 4, gasket seal B5, locking flange B6, metal hose B7, test
Rack 8 and water tank 9；
When test, lift check valve 4 is scheduled on test-bed 8 by locking flange A2 and locking flange B6 to clamping,
The inlet and outlet of locking flange A2 and locking flange B6 and lift check valve 4 pass through gasket seal A3 respectively and gasket seal B5 is close
Envelope, metal hose A1 and metal hose B7 are threadedly coupled with locking flange A2 and locking flange B6 by loose joint respectively.Metal is soft
Pipe B7 is protruded into water tank 9.Metal hose A1 connection gas source.
When measuring slip, only metal hose B7 need to be passed through the inverted measuring cup for filling water in water tank 9.Slowly
Bleed pressure is increased, whether detection lift check valve 4 leaks.If check-valves slip is not in the range of factory settings, right
Lift check valve 4 is tested again again after being ground.
Claims (3)
1. a kind of nuclear power station-service welded check valve leak tightness test device, it is characterised in that: including metal hose A, locking flange
A, flange B, metal hose B, test-bed and water tank are locked；Lift check valve is by locking flange A and locking flange B to folder
It is fixed on test-bed, metal hose A and metal hose B are connect with locking flange A locking flange B respectively；Metal hose B stretches
Enter in water tank；Metal hose A connection gas source.
2. nuclear power station-service welded check valve leak tightness test device according to claim 1, it is characterised in that: the lock
The inlet and outlet of tight flange A and locking flange B and lift check valve pass through gasket seal A and gasket seal B respectively and seal.
3. nuclear power station-service welded check valve leak tightness test device according to claim 1, it is characterised in that: the gold
Belong to hose A and metal hose B to be threadedly coupled with locking flange A and locking flange B by loose joint respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822191165.8U CN209247250U (en) | 2018-12-25 | 2018-12-25 | A kind of nuclear power station-service welded check valve leak tightness test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822191165.8U CN209247250U (en) | 2018-12-25 | 2018-12-25 | A kind of nuclear power station-service welded check valve leak tightness test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209247250U true CN209247250U (en) | 2019-08-13 |
Family
ID=67534651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822191165.8U Active CN209247250U (en) | 2018-12-25 | 2018-12-25 | A kind of nuclear power station-service welded check valve leak tightness test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209247250U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907102A (en) * | 2019-12-26 | 2020-03-24 | 温州职业技术学院 | Valve detection device |
| CN113933047A (en) * | 2021-10-15 | 2022-01-14 | 江苏卡一阀门制造有限公司 | Lifting check valve body test device |
-
2018
- 2018-12-25 CN CN201822191165.8U patent/CN209247250U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907102A (en) * | 2019-12-26 | 2020-03-24 | 温州职业技术学院 | Valve detection device |
| CN110907102B (en) * | 2019-12-26 | 2021-08-03 | 温州职业技术学院 | Valve detection device |
| CN113933047A (en) * | 2021-10-15 | 2022-01-14 | 江苏卡一阀门制造有限公司 | Lifting check valve body test device |
| CN113933047B (en) * | 2021-10-15 | 2023-11-14 | 江苏卡一阀门制造有限公司 | Lifting check valve body test device |
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