CN215219518U

CN215219518U - Multi-path bidirectional supercharging leakage detection control system for valve low-temperature pressure test

Info

Publication number: CN215219518U
Application number: CN202121303789.XU
Authority: CN
Inventors: 陈尚书; 顾春刚; 虞铮; 马云辉; 陈篆豪; 曾洲; 雷箫; 陈枫; 李俊; 顾琪
Original assignee: CNNC Sufa Technology Industry Co Ltd
Current assignee: CNNC Sufa Technology Industry Co Ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-12-17
Anticipated expiration: 2031-06-10

Abstract

The utility model belongs to valve pressure test control field, concretely relates to two-way pressure boost leak hunting control system of valve low temperature pressure test multichannel. The utility model provides a two-way pressure boost of valve low temperature pressure test multichannel, leak hunting control system, wherein includes system pressure source, trip valve, the manometer of UNICOM in proper order, divide into pressure boost, leak hunting end behind two tee bend switching-over valves, forms a plurality of independent test sub-loop systems after connecting waiting to test the valve. This neotype effect is: (1) and meanwhile, a plurality of test loops are formed, so that the test efficiency is improved, and the production cost is reduced. (2) In the test process, the test pipeline does not need to be disassembled and switched, so that the test safety is improved. (3) And monitoring by adopting double pressure values, thereby ensuring the validity of the test pressure value.

Description

Multi-path bidirectional supercharging leakage detection control system for valve low-temperature pressure test

Technical Field

The utility model belongs to valve pressure test control field, concretely relates to two-way pressure boost leak hunting control system of valve low temperature pressure test multichannel.

Background

Due to the harsh working condition of the ultralow temperature valve, in order to verify the product performance, the ultralow temperature valve is generally subjected to a bidirectional pressure sealing test at a low temperature of-196 ℃ by using liquid nitrogen as a cooling medium according to the relevant standard requirements before delivery.

The existing low-temperature pressurization system is unidirectional, and meanwhile, due to the fact that liquid nitrogen has the characteristics of volatility, frostbite on people and the like, bidirectional pressurization and leakage detection switching cannot be achieved in an ultralow-temperature state, so that the problems of low efficiency, certain safety risk, high test cost and the like exist in the test process.

Therefore, a multi-path bidirectional pressurization leakage detection control system for low-temperature pressure test of the valve is needed.

Disclosure of Invention

The utility model discloses to the problem that above-mentioned exists, provide a two-way pressure boost of valve low temperature pressure test multichannel, leak hunting control method, fundamentally improves test efficiency, furthest reduces safe risk factor and testing cost in the testing process.

The technical scheme of the utility model is that: the utility model provides a two-way pressure boost of valve low temperature pressure test multichannel, leak hunting control system, wherein includes system pressure source, trip valve, the manometer of UNICOM in proper order, divide into pressure boost, leak hunting end behind two tee bend switching-over valves, forms a plurality of independent test sub-loop systems after connecting waiting to test the valve.

The multi-path bidirectional pressurization leakage detection control system for the low-temperature pressure test of the valve is characterized in that a system pressure source is used for providing pressure for a test loop.

The multi-path bidirectional pressurization leakage detection control system for the low-temperature pressure test of the valve is characterized in that a pressure control valve is adopted for system pressure control, and a pressure gauge is adopted for monitoring.

The multi-path bidirectional pressurization leakage detection control system for the low-temperature pressure test of the valve adopts the two-position three-way reversing valve to form two paths of interlocking branch pipelines for pressurization and leakage detection and can be switched.

The multi-path bidirectional pressurization leakage detection control system for the low-temperature pressure test of the valve comprises two paths of pressurization and leakage detection branch pipelines, wherein the two paths of pressurization and leakage detection branch pipelines are provided with quantum pipelines with the same number, a pressure inlet valve and a leakage detection valve are arranged on the sub-pipelines, the downstream of the pressure inlet valve is connected to the valve to be tested, and the downstream end of the leakage detection valve is emptied.

According to the multi-path bidirectional pressurization leakage detection control system for the low-temperature pressure test of the valve, the pressurization end pipeline and the leakage detection end are respectively connected to the two ends of the valve to be tested, so that a pressure test loop is formed.

According to the multi-path bidirectional supercharging leakage detection control system for the low-temperature pressure test of the valve, the pressure gauges are respectively arranged on the branch pipelines for carrying out double monitoring, and the effectiveness of test pressure is guaranteed.

This neotype effect is: (1) and meanwhile, a plurality of test loops are formed, so that the test efficiency is improved, and the production cost is reduced. (2) In the test process, the test pipeline does not need to be disassembled and switched, so that the test safety is improved. (3) And monitoring by adopting double pressure values, thereby ensuring the validity of the test pressure value.

Drawings

Fig. 1 is a schematic diagram of a multi-path bidirectional pressurization leak detection control system for low-temperature pressure test of a valve

FIG. 2 is a schematic view of leakage detection at the A end of a multi-path bidirectional supercharging leakage detection control system for low-temperature pressure test of a valve

FIG. 3 is a schematic diagram of leak detection at the B end of a multi-path bidirectional supercharging leak detection control system for low-temperature pressure test of a valve

In the figure: 1. a pressure control valve; 2. a pressure gauge; 3. a system pressure line; 4. a two-position three-way reversing valve; 5. a pipeline normally open cut-off valve; 6. a normally open cut-off valve of the pipeline B; 7. a pressure gauge; 8. a pressure gauge; 9. a pressure inlet valve a 1; 10. a pressure inlet valve a 2; 11. a pressure inlet valve a 3; 12. a pressure inlet valve a 4; 13. a pressure inlet valve B4; 14. inlet pressure valves B3, 15, inlet pressure valve B2; 16. a pressure inlet valve B1; 17. leak detection valve a 1; 18. leak detection valve a 2; 19. leak detection valve a 3; 20. leak detection valve a 4; 21. leak detection valve B4; 22. leak detection valve B3; 23. leak detection valve B2; 24. leak detection valve B1; 25. a valve 1 to be tested; 26. a valve 2 to be tested; 27. a valve 3 to be tested; 28. a valve 4 to be tested; 29. a pipeline way A; 30. a pipeline of a path B; 31. a, a pipeline emptying end; 32. b, a pipeline emptying end; 33. a system pressure source;

Detailed Description

This patent is further described below with reference to the accompanying drawings:

as shown in fig. 1, the required pressure of the system is provided by a system pressure source 33, the pressure is adjusted to a test pressure value through a pressure control valve 1, and the pressure is monitored through a pressure gauge 2, the pressure is distributed to an A pipeline 29 or a B pipeline 30 after passing through a two-position three-way reversing valve 4, the pressure is not applied to the other pipeline at the moment, an interlocking relation is formed between the pressure gauge and the pipeline with pressure, in order to prevent the pressure value from being monitored and distorted in the test process by the pressure gauge 2, a pressure gauge 7 and a pressure gauge 8 are respectively arranged on the A pipeline 29 and the B pipeline 30 for double monitoring, and meanwhile, an A pipeline normally-open shut valve 5 and a B pipeline normally-open shut valve 6 are respectively arranged on the A pipeline 29 and the B pipeline 30 to prevent the pressure of the upstream pipeline from abnormally rising so as to provide double protection. 4 sub-pipelines are arranged on the A-line pipeline 29, a pressure inlet valve A19, a pressure inlet valve A210, a pressure inlet valve A311 and a pressure inlet valve A412 are arranged on each sub-pipeline, wherein, two ends of the downstream end of each pressure inlet valve are respectively connected with

valves

28, 27, 26 and 25 to be tested, the other end is respectively connected with a leakage detection valve A117, a leakage detection valve A218, a leakage detection valve A319 and a leakage detection valve A420, the downstream end of the leakage detection valve is connected with a pipeline emptying end A31, and similarly, 4 sub-pipelines are arranged on the B-pipeline 30, and a pressure inlet valve B116, a pressure inlet valve B215, a pressure inlet valve B314 and a pressure inlet valve B413 are arranged on each sub-pipeline, wherein, two ends of the downstream end of each pressure inlet valve are respectively connected with

valves

28, 27, 26 and 25 to be tested, the other end is respectively connected with a leakage detection valve B124, a leakage detection valve B223, a leakage detection valve B322 and a leakage detection valve B421, and the downstream end of the leakage detection valve is connected with a B pipeline emptying end 32, so that 4 loops to be tested are formed. As shown in fig. 2, the system pressure is adjusted by the pressure control valve 1, the pressure value is monitored by the pressure gauge 2, the two-position three-way directional valve 4 is switched to the pipeline 29 a as the pressure increasing end, the pipeline 30B as the leakage detecting end, the pressure is distributed and then respectively reaches the pressure inlet valve a 19, the pressure inlet valve a 210, the pressure inlet valve a 311 and the pressure inlet valve a 412, leak detection valve a 117, leak detection valve a 218, leak detection valve a 319, and leak detection valve a 420 are closed while continuing to pressurize the end of the

valve

28, 27, 26, 25 to be tested, at which time, closing the pressure inlet valve B116, the pressure inlet valve B215, the pressure inlet valve B314 and the pressure inlet valve B413 on the B-way pipeline 30, opening the leakage detection valve B124, the leakage detection valve B223, the leakage detection valve B322 and the leakage detection valve B421, the evacuation end 32 of the B-path pipeline is subjected to leak detection corresponding to one end of the valve to be tested at the specified time, after the test is finished, and respectively opening the leakage detection valve A117, the leakage detection valve A218, the leakage detection valve A319 and the leakage detection valve A420 on the A-way pipeline 29 to discharge corresponding valve cavity test pressures.

As shown in fig. 3, after the leak detection of one end of the valve to be tested is completed, the upper pressure valve a 19, the pressure inlet valve a 210, the pressure inlet valve a 311, the pressure inlet valve a 412, and the leak detection valve B124, the leak detection valve B223, the leak detection valve B322, and the leak detection valve B421 on the line a 29 are respectively closed, the upper pressure valve B116, the pressure inlet valve B215, the pressure inlet valve B314, and the pressure inlet valve B413 on the line B30 are opened, the two-position three-way directional valve 4 is switched to the line B30 to be a pressure increasing end, the line a 29 is a leak detection end, the pressure continuously increases to the other ends of the valves to be tested 28, 27, 26, and 25 at the same time, the leak detection valve B124, the leak detection valve B223, the leak detection valve B322, and the leak detection valve B421 on the line B30 are respectively opened after the test is completed. The present invention is also capable of other embodiments, and those skilled in the art can make various changes according to the present invention without departing from the principle of the present invention, and these changes should fall within the scope of the claims.

Claims

1. The utility model provides a two-way pressure boost leak hunting control system of valve low temperature pressure test multichannel, wherein includes system pressure source (33), pressure control valve (1), manometer (2) of UNICOM in proper order, divides into pressure boost, leak hunting end behind two tee bend switching-over valves (4), forms a plurality of independent test sub-loop systems behind the valve of treating the test through connecting.

2. A multi-way, bi-directional, booster leak detection control system for cold pressure testing of valves as claimed in claim 1 wherein a system pressure source (33) is used to provide pressure to the test loop.

3. A multi-channel bidirectional booster leak detection control system for valve low temperature pressure test as claimed in claim 2, wherein the system pressure control uses the pressure control valve (1) and uses the pressure gauge (2) for monitoring.

4. The multi-path bidirectional pressurization leakage detection control system for the low-temperature pressure test of the valve as claimed in claim 3, wherein two-position three-way reversing valves (4) are adopted to form two paths of interlocking branch pipelines for pressurization and leakage detection and can be switched.

5. The multi-path bidirectional boosting leak detection control system for the low-temperature pressure test of the valve as claimed in claim 4, wherein the two paths of boosting and leak detection branch pipelines are provided with quantum pipelines with the same number, and the sub-pipelines are provided with pressure inlet valves (10-17) and leak detection valves (17-25), wherein the downstream of the pressure inlet valves is connected with the valves (25-28) to be tested, and the downstream ends of the leak detection valves (17-25) are emptied.

6. The multi-path bidirectional booster leak detection control system for the low-temperature pressure test of the valve as claimed in claim 5, wherein the booster end pipeline and the leak detection end are respectively connected to two ends of the valve to be tested (25-28), so as to form a pressure test loop.

7. The multi-path bidirectional pressurization leakage detection control system for the low-temperature pressure test of the valve as claimed in claim 6, wherein pressure gauges (7, 8) are respectively arranged on the branch pipes (29, 30) for double monitoring, so as to ensure the effectiveness of the test pressure.