CN204924590U - A pressurization - evacuation experimental apparatus for leak hunting of helium mass spectrum - Google Patents
A pressurization - evacuation experimental apparatus for leak hunting of helium mass spectrum Download PDFInfo
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- CN204924590U CN204924590U CN201520606258.6U CN201520606258U CN204924590U CN 204924590 U CN204924590 U CN 204924590U CN 201520606258 U CN201520606258 U CN 201520606258U CN 204924590 U CN204924590 U CN 204924590U
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- valve
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- leak
- leak hunting
- leak detection
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Abstract
The utility model belongs to the technical field of the design and manufacture of industry check out test set, relate to a pressurization - evacuation experimental apparatus for leak hunting of helium mass spectrum, including valve, vacuum meter, pressure transmitter, the leakage detector, helium source and nitrogen gas source are connected with the vacuum meter through valve vortex sheet pump, setting up the leak hunting frock on the switching mouth, the leak hunting frock is examined the piece with the quilt and is connected, it is together parallelly connected in helium source and nitrogen gas source respectively that pressure transmitter passes through the valve, and pressure transmitter is through switching mouthful and examined and link to each other simultaneously, the leakage detector is examined the piece through valve and quilt and is linked to each other, is examined the piece through the valve vacuum meter with leakage detector and quilt and connects in parallel together. This experimental apparatus can be extensive be applied to blowing process, helium cover method, pressurize multiple leak hunting method evacuation such as vacuum method, accumulative, backpressure method, preliminary filling helium method, suction gun method and fill into the helium source using.
Description
Technical field
The utility model belongs to the design and manufaction technical field of industrial detection equipment, specifically relates to a kind of pressurization for helium mass spectrum leak detection-vacuumize experimental provision.
Background technology
From the principle of helium mass spectrum leak detection, only form the air-leakage test that certain concentration difference and pressure reduction just can realize leak detection position in the both sides at sealing position, so vacuumizing and be filled with probe gas to leak detection position in leakage detecting process is requisite link in all leak detection processes.During each leak detection, this two parts system is needed to carry out the preliminary works such as dismounting, assembly and air-leakage test, not only inefficiency, and the consistance of the operating mode that can not ensure at every turn to hunt leak, especially when doing some high accuracy experiments, the Correct Analysis usually affected experimental result because of the inconsistency of state before and after system and process.In addition, charge pressure, concentration and leak rate have close contacting, charge pressure height and the carbonate concentration size of tested part interior determine the detectability of whole leak detection system, by Measurement accuracy and the charge pressure and the concentration that control tested part interior, the sealing property that can be accurate evaluation leak detection position provides data supporting.As can be seen here, developing the experimental provision that pressurizes-vacuumize, is all have great significance from the viewpoint of leakage detecting process or from leak detection result reliability etc.
Summary of the invention
The purpose of this utility model: a kind of experimental provision for helium mass spectrum leak detection is provided, possess leak detection position is vacuumized, pressurising, the function such as cleaning, can the charge pressure of Measurement accuracy control system, also there is the advantages such as easy and simple to handle, good airproof performance, convenient transport simultaneously.
The purpose of this utility model is achieved in that and comprises a kind of pressurization for helium mass spectrum leak detection-vacuumize experimental provision valve, vacuum meter, pressure unit, leak locator, helium gas source and source nitrogen, be connected by valve sliding vane rotary pump with vacuum meter; Converting interface is arranged leak detection tool equipment, leak detection tool equipment is connected with detected pieces; Pressure unit is connected in parallel respectively at helium gas source and source nitrogen by valve, and pressure unit is connected with detected pieces by converting interface simultaneously; Leak locator is connected with detected pieces by valve, is connected in parallel by valve vacuum meter and leak locator and detected pieces.
Beneficial effect: in this device by compression system and pumped vacuum systems integrated, form closed system, " environment " interference can be reduced, can be converted to rapidly system pattern of pressure after system is vacuumized, have to be used in and ensure that the state of each leak detection system is consistent, be conducive to the control to key parameters such as the vacuum tightness of system and charge pressures, be conducive to ensureing the reliability of leak detection result and comparative.Meanwhile, decrease when hunting leak at every turn, system is carried out to the preliminary works such as dismounting, assembly, sealing propertytest and reliability detection, the efficiency of detection can be improved.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is structural representation figure of the present utility model.
Embodiment
Embodiment 1, a kind of pressurization for helium mass spectrum leak detection-vacuumize experimental provision, as shown in Figure 1, comprise valve 2, vacuum meter 3, pressure unit 4, leak locator 8, and helium gas source 9 and source nitrogen 10 are connected with vacuum meter 3 by valve 2 sliding vane rotary pump 1; Converting interface 5 is arranged leak detection tool equipment 6, leak detection tool equipment 6 is connected with detected pieces 7; Pressure unit 4 is connected in parallel respectively at helium gas source 9 and source nitrogen 10 by valve 2, and pressure unit 4 is connected with detected pieces 7 by converting interface 5 simultaneously; Leak locator 8 is connected with detected pieces 7 by valve 2, is connected in parallel by valve 2 vacuum meter 3 and leak locator 8 and detected pieces 7.
In practical operation, before leak detection, in device, all valves are in closed condition; The leak detection tool equipment of detected pieces is arranged on converting interface place, opens valve, vacuum meter, detected pieces is vacuumized; Valve-off, opens leak locator and valve, completes the demarcation of sample-out count to detected pieces and system minimum detectable leak rate; Open sliding vane rotary pump, valve and vacuum meter and complete vacuumizing leak detection tool equipment; Open the power supply of valve and sensor, be filled with the helium source of required pressure, can valve be opened as required, be filled with required nitrogen; Open valve after waiting to hunt leak, gas is discharged.
The functions such as native system has pressurization, vacuumizes, pressure monitoring, cleaning.By sliding vane rotary vacuum pump (vacuum pump carries out type selecting according to the size of tested position volume) to leak detection position preset vacuum, after reaching the working pressure of leak locator, open the demarcation that leak locator carries out Baseline monitoring and system minimum detectable leak rate.Then, vacuum pump (be provided with operation valve between leak locator and vacuum pump, can realize the conversion of gas circuit between leak locator and leak detection tool equipment) is transferred to leak detection tool equipment place and vacuumizes it.According to the requirement of leak detection index Design, to the helium source being filled with certain pressure in leak detection tool equipment, or be filled with the mixed gas of helium and nitrogen, the amount of helium be filled with in leak detection tool equipment is controlled by pressure transducer, now detected pieces carries out leak detection state, after leak detection completes, by air release, release is filled with the probe gas of leak detection tool equipment inside.In the process of leak detection, usually there will be the situation of leakage, at this moment need to recheck, polluting sample-out count for avoiding helium source residual in pipeline.Therefore, this device also should possess cleaning function, after having hunted leak, to the cleaning of gas circuit in whole device at every turn.Meanwhile, pump oil also can be avoided contaminated.Conversion in this device between each function relies on ball valve to control, and ball valve all has good sealing property under malleation and vacuum state, and long service life.Connecting portion in system uses the sealing means of welding or pipe thread, can ensure the favorable sealing property of package unit.
This experimental provision can be widely used in the multiple leak hunting methods such as blowing process, helium cover method, pressurising vacuum method, accumulative, back pressure method, preliminary filling helium method, suction gun method and vacuumize and be filled with the use of helium source.By changing the kind of probe gas in experimental provision, this experimental provision also can be used for H
2, SF
6deng the leak detection of probe gas.
Claims (1)
1., for the pressurization-vacuumize an experimental provision of helium mass spectrum leak detection, comprise valve (2), vacuum meter (3), pressure unit (4), leak locator (8), helium gas source (9) and source nitrogen (10), is characterized in that: be connected with vacuum meter (3) by valve (2) sliding vane rotary pump (1); Converting interface (5) is arranged leak detection tool equipment (6), leak detection tool equipment (6) is connected with detected pieces (7); Pressure unit (4) is connected in parallel respectively at helium gas source (9) and source nitrogen (10) by valve (2), and pressure unit (4) is connected with detected pieces (7) by converting interface (5) simultaneously; Leak locator (8) is connected with detected pieces (7) by valve (2), is connected in parallel by valve (2) vacuum meter (3) and leak locator (8) and detected pieces (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606258.6U CN204924590U (en) | 2015-08-13 | 2015-08-13 | A pressurization - evacuation experimental apparatus for leak hunting of helium mass spectrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520606258.6U CN204924590U (en) | 2015-08-13 | 2015-08-13 | A pressurization - evacuation experimental apparatus for leak hunting of helium mass spectrum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204924590U true CN204924590U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520606258.6U Expired - Fee Related CN204924590U (en) | 2015-08-13 | 2015-08-13 | A pressurization - evacuation experimental apparatus for leak hunting of helium mass spectrum |
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| CN (1) | CN204924590U (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405006A (en) * | 2016-08-31 | 2017-02-15 | 天津立中车轮有限公司 | Mutual inspection device for double helium concentration meters |
| CN106768802A (en) * | 2016-12-05 | 2017-05-31 | 中国航天空气动力技术研究院 | A kind of high-purity special gas charging device and methods for filling for shock tunnel |
| CN107655638A (en) * | 2017-08-31 | 2018-02-02 | 阜阳扬宇充电设备有限公司 | A kind of power module manufacture air-tightness detection device |
| CN109163857A (en) * | 2018-08-29 | 2019-01-08 | 清华大学 | A kind of high temperature and pressure helium leakage quantitative testing device and detection method |
| CN109341979A (en) * | 2018-10-30 | 2019-02-15 | 大连元利流体技术有限公司 | Nitrogen and helium leak check system |
| CN109489914A (en) * | 2018-12-20 | 2019-03-19 | 中国石油集团川庆钻探工程有限公司 | Downhole tool experimental provision pneumatic sealing test method |
| CN109900438A (en) * | 2019-03-04 | 2019-06-18 | 湖北三江航天万峰科技发展有限公司 | A kind of precision optical instrument pumping inflation leak test platform |
| CN110595813A (en) * | 2019-09-12 | 2019-12-20 | 凯迈（洛阳）气源有限公司 | Split type Stirling refrigerator inflation and performance test bench |
| CN112146820A (en) * | 2020-09-24 | 2020-12-29 | 华能山东石岛湾核电有限公司 | Helium medium valve tightness test device and test method thereof |
| CN112857695A (en) * | 2021-01-15 | 2021-05-28 | 合肥工业大学 | Laser gyro stable inflation and high-precision leak detection system |
| CN113063547A (en) * | 2021-03-22 | 2021-07-02 | 攀钢集团攀枝花钢钒有限公司 | RH furnace vacuum system leakage searching method |
| CN113252250A (en) * | 2021-04-20 | 2021-08-13 | 沈阳航天新光集团有限公司 | Portable calibration device for helium mass spectrum positive pressure accumulation leak detection method |
| CN113899505A (en) * | 2021-09-23 | 2022-01-07 | 深圳华尔升智控技术有限公司 | Helium mass spectrometer leak detector based on helium spraying method and auxiliary vacuum system |
| CN117030144A (en) * | 2023-10-09 | 2023-11-10 | 西安核设备有限公司 | Grid helium leakage detection method |
-
2015
- 2015-08-13 CN CN201520606258.6U patent/CN204924590U/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405006A (en) * | 2016-08-31 | 2017-02-15 | 天津立中车轮有限公司 | Mutual inspection device for double helium concentration meters |
| CN106768802A (en) * | 2016-12-05 | 2017-05-31 | 中国航天空气动力技术研究院 | A kind of high-purity special gas charging device and methods for filling for shock tunnel |
| CN106768802B (en) * | 2016-12-05 | 2018-10-09 | 中国航天空气动力技术研究院 | A kind of high-purity special gas charging device and methods for filling for shock tunnel |
| CN107655638A (en) * | 2017-08-31 | 2018-02-02 | 阜阳扬宇充电设备有限公司 | A kind of power module manufacture air-tightness detection device |
| CN109163857A (en) * | 2018-08-29 | 2019-01-08 | 清华大学 | A kind of high temperature and pressure helium leakage quantitative testing device and detection method |
| CN109341979B (en) * | 2018-10-30 | 2020-04-17 | 大连元利流体技术有限公司 | Nitrogen and helium leak detection system |
| CN109341979A (en) * | 2018-10-30 | 2019-02-15 | 大连元利流体技术有限公司 | Nitrogen and helium leak check system |
| CN109489914A (en) * | 2018-12-20 | 2019-03-19 | 中国石油集团川庆钻探工程有限公司 | Downhole tool experimental provision pneumatic sealing test method |
| CN109900438A (en) * | 2019-03-04 | 2019-06-18 | 湖北三江航天万峰科技发展有限公司 | A kind of precision optical instrument pumping inflation leak test platform |
| CN110595813A (en) * | 2019-09-12 | 2019-12-20 | 凯迈（洛阳）气源有限公司 | Split type Stirling refrigerator inflation and performance test bench |
| CN112146820A (en) * | 2020-09-24 | 2020-12-29 | 华能山东石岛湾核电有限公司 | Helium medium valve tightness test device and test method thereof |
| CN112857695A (en) * | 2021-01-15 | 2021-05-28 | 合肥工业大学 | Laser gyro stable inflation and high-precision leak detection system |
| CN113063547A (en) * | 2021-03-22 | 2021-07-02 | 攀钢集团攀枝花钢钒有限公司 | RH furnace vacuum system leakage searching method |
| CN113063547B (en) * | 2021-03-22 | 2021-12-07 | 攀钢集团攀枝花钢钒有限公司 | RH furnace vacuum system leakage searching method |
| CN113252250A (en) * | 2021-04-20 | 2021-08-13 | 沈阳航天新光集团有限公司 | Portable calibration device for helium mass spectrum positive pressure accumulation leak detection method |
| CN113899505A (en) * | 2021-09-23 | 2022-01-07 | 深圳华尔升智控技术有限公司 | Helium mass spectrometer leak detector based on helium spraying method and auxiliary vacuum system |
| CN117030144A (en) * | 2023-10-09 | 2023-11-10 | 西安核设备有限公司 | Grid helium leakage detection method |
| CN117030144B (en) * | 2023-10-09 | 2024-02-06 | 西安核设备有限公司 | Grid helium leakage detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20200813 |