CN203422198U - Rapid leak detection apparatus of nitrogen and hydrogen leak detector - Google Patents
Rapid leak detection apparatus of nitrogen and hydrogen leak detector Download PDFInfo
- Publication number
- CN203422198U CN203422198U CN201320563470.XU CN201320563470U CN203422198U CN 203422198 U CN203422198 U CN 203422198U CN 201320563470 U CN201320563470 U CN 201320563470U CN 203422198 U CN203422198 U CN 203422198U
- Authority
- CN
- China
- Prior art keywords
- switch valve
- leak locator
- vacuum
- gas circuit
- detection apparatus
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model provides a rapid leak detection apparatus of a nitrogen and hydrogen leak detector. The rapid leak detection apparatus includes a detection gas path; and the detection gas path comprises a vacuum chamber, a first vacuum pump and a leak detector which are connected in series in sequence. The object to be detected is place in the vacuum chamber, and tracer gas enters the object to be detected. The rapid leak detection apparatus enables the nitrogen and hydrogen leak detector to be directly applied for detection under vacuum condition, the response speed is raised, the detection efficiency is increased, and the sensitivity is enhanced.
Description
Technical field
The utility model relates to a kind of leak detecting device, relates in particular to a kind of fast leakage detection apparatus of nitrogen hydrogen leak locator, belongs to leak hunting technology field.
Background technology
At present, nitrogen hydrogen leak locator comprises two kinds of detection modes: suction-type and diffusion type.Diffusion type rises and has determined whether leakage according to the concentration of tracer gas in sealed volume, suction-type has determined whether leakage according to the concentration that sucks tracer gas in mixed gas, but for large volume or measured object in irregular shape, after cover box or fixture get up measured object cover, it is smaller that crevice volume cannot be done, cause the response speed of nitrogen hydrogen leak locator slow, efficiency is low, when crevice volume is larger, the tracer gas of identical leakage volume is less with the concentration change producing after air in crevice volume mixes, and causes the sensitivity of nitrogen hydrogen leak locator to reduce.
And nitrogen hydrogen leak locator can not detect as helium mass spectrometer leak detector under vacuum condition, need the participation of air to work.
The shortcoming of prior art
1, nitrogen hydrogen leak locator can not be directly used under vacuum condition and detect;
When 2, the measured object of large volume detects with nitrogen hydrogen leak locator, response speed is slow, efficiency is low;
When 3, the measured object of large volume detects with nitrogen hydrogen leak locator, sensitivity is low.
Summary of the invention
Problem to be solved in the utility model is to provide that a kind of reaction velocity is fast, efficiency is high, sensitivity is high, can be directly used in the fast leakage detection apparatus that carries out the detection of nitrogen hydrogen under vacuum condition.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of fast leakage detection apparatus of nitrogen hydrogen leak locator is provided, comprises a detection gas circuit, described detection gas circuit comprises vacuum tank, the first vacuum pump and the leak locator being connected in series successively; Measured object is placed in vacuum tank, and tracer gas passes in measured object.
Owing to being vacuum state in vacuum tank, when measured object has leakage, the tracer gas in measured object will leak in vacuum tank very soon, thereby by vacuum pump, is extracted out at an easy rate, then by leak locator perception tracer gas, and detects leakage; Because the first vacuum delivery side of pump is not vacuum state, therefore the leak locator that can make detects for vacuum method.
Further, in described detection gas circuit, between vacuum tank and the first vacuum pump, be connected in series one first switch valve, and the first switch valve and leak locator electrically connect.
Further, the described detection gas circuit vacuum road of bleeding in advance that is connected in parallel, it is connected in parallel node between vacuum tank and the first switch valve; The described vacuum road of bleeding in advance comprises second switch valve and the second vacuum pump being connected in series, and second switch valve and leak locator electrically connect.
The first vacuum pump is testing pump, is positioned at and detects in gas circuit; The second vacuum pump is service pump, is positioned at vacuum and bleeds in advance on road; Generally, because the volume of vacuum tank is larger, therefore for the gas in vacuum tank is extracted out fast, service pump can be the vacuum pump of large flow, in order to improve the susceptibility of detection, testing pump can be the vacuum pump of low discharge.
Further, described detection gas circuit the 3rd switch valve that is also connected in parallel, it is connected in parallel node between vacuum tank and the first switch valve, and the 3rd switch valve and leak locator electrically connect; While needing to take out vacuum tank after measured object leak detection, this switch valve is opened, and can make vacuum tank return to atmospheric pressure state.
Further, also be provided with a purging gas circuit, described purging gas circuit comprises the 4th switch valve and the 5th switch valve, described the 4th switch valve is connected in parallel between the first switch valve and the first vacuum pump, described the 5th switch valve is connected in parallel between the first vacuum pump and leak locator, and the described the 4th and the 5th switch valve all electrically connects with leak locator.
Further, in described purging gas circuit, the 4th switch valve is connected in series a flow-limiting valve, and described flow-limiting valve is communicated with pure air.
When the first switch valve cuts out, and the 4th switch valve and the 5th switch valve are when open, the pure air of composition and concentration stabilize will pass through flow-limiting valve, the 4th switch valve, the first vacuum pump and the 5th switch valve successively, with the flow of fixing, tracer gas residual in the first vacuum pump is purged clean, then close the 4th and the 5th switch valve, for leak detection test is next time prepared; It is more convenient that the setting of the 4th switch valve and the 5th switch valve makes to clean the first vacuum pump, improved work efficiency, and flow-limiting valve has guaranteed to purge the stability of gas flow in gas circuit.
Advantage and the good effect that the utlity model has are:
1, nitrogen hydrogen leak locator being directly used under vacuum condition detects;
The response speed when measured object of 2, significantly accelerating large volume detects with nitrogen hydrogen leak locator, improve detection efficiency;
The sensitivity when measured object that 3, significantly improves large volume detects with nitrogen hydrogen leak locator.
Accompanying drawing explanation
Fig. 1 is the gas circuit schematic diagram of the fast leakage detection apparatus of the utility model specific embodiment nitrogen hydrogen leak locator.
In figure: 1. tracer gas, 2. measured object, 3. vacuum tank, 4. second switch valve, 5. the first switch valve, 6. the 3rd switch valve, 7. the second vacuum pump, 8. the first vacuum pump, 9. the 4th switch valve, 10. the 5th switch valve, 11. nitrogen hydrogen leak locators, 12. flow-limiting valves, the pure air of 13. compositions and concentration stabilize.
Wherein, dotted line represents circuit, and solid line represents gas circuit.
Embodiment
The present embodiment is a kind of fast leakage detection apparatus of nitrogen hydrogen leak locator, comprises a detection gas circuit, detects gas circuit and comprises vacuum tank 3, the first vacuum pump 8 and the nitrogen hydrogen leak locator 11 being connected in series successively; Measured object 2 is placed in vacuum tank 3, and tracer gas 1 passes in measured object 2; Vacuum tank 3 and 8, the first vacuum pump are connected in series one first switch valve 5, and the first switch valve 5 electrically connects with nitrogen hydrogen leak locator 11.
In the present embodiment, detect the gas circuit vacuum road of bleeding in advance that is connected in parallel, it is connected in parallel node between vacuum tank 3 and the first switch valve 5; The vacuum road of bleeding in advance comprises second switch valve 4 and the second vacuum pump 7 being connected in series, and second switch valve 4 electrically connects with nitrogen hydrogen leak locator 11.
In the present embodiment, the first vacuum pump 8 is testing pump, is positioned at and detects in gas circuit; The second vacuum pump 7 is service pump, is positioned at vacuum and bleeds on road in advance.
In the present embodiment, detect gas circuit the 3rd switch valve 6 that is also connected in parallel, it is connected in parallel node between vacuum tank 3 and the first switch valve 5, and the 3rd switch valve 6 and nitrogen hydrogen leak locator 11 electrically connect; While needing to take out vacuum tank 3 after measured object 2 leak detections, this switch valve is opened, and can make vacuum tank 3 return to atmospheric pressure state.
The present embodiment is also provided with a purging gas circuit, purge gas circuit and comprise the 4th switch valve 9 and the 5th switch valve 10, the 4th switch valve 9 is connected in parallel between the first switch valve 5 and the first vacuum pump 8, the 5th switch valve 10 is connected in parallel between the first vacuum pump 8 and nitrogen hydrogen leak locator 11, and the 4th and the 5th switch valve all electrically connects with nitrogen hydrogen leak locator 11; The 4th switch valve 9 is connected in series a flow-limiting valve 12, and flow-limiting valve 12 is communicated with pure air 13.
The principle of work of the present embodiment: measured object 2 is put into vacuum tank 3, and be filled with tracer gas 1, the 3rd switch valve 6 cuts out, second switch valve 4 is opened, by the second vacuum pump 7, taken out in advance, when vacuum tank 3 is extracted into certain vacuum and spends, second switch valve 4 cuts out, again the first switch valve 5 is opened, now, if measured object 2 has leakage, the tracer gas 1 leaking out is extracted out by the first vacuum pump 8, and to the outlet of the first vacuum pump 8, by 11 perception of nitrogen hydrogen leak locator, measure leakage, then second switch valve 5 cuts out, the 3rd switch valve 6 is opened, make vacuum tank 3 return to atmospheric pressure state, and take out measured object 2, simultaneously, the 4th switch valve 9 and the 5th switch valve 10 are opened simultaneously, the pure air 13 of composition and concentration stabilize is through flow-limiting valve 12, the 4th switch valve 9, the first vacuum pump 8, the 5th switch valve 10, with the flow of fixing, the interior residual tracer gas 1 of the first vacuum pump 8 is purged clean, purge after a period of time, the 4th switch valve 9 and the 5th switch valve 10 are closed simultaneously, for detecting next time, prepare.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (6)
1. a fast leakage detection apparatus for nitrogen hydrogen leak locator, comprises a detection gas circuit, it is characterized in that: described detection gas circuit comprises vacuum tank, the first vacuum pump and the leak locator being connected in series successively; Measured object is placed in vacuum tank, and tracer gas passes in measured object.
2. the fast leakage detection apparatus of nitrogen hydrogen leak locator according to claim 1, is characterized in that: in described detection gas circuit, be connected in series one first switch valve between vacuum tank and the first vacuum pump, and the first switch valve and leak locator electrically connect.
3. the fast leakage detection apparatus of nitrogen hydrogen leak locator according to claim 2, is characterized in that: the described detection gas circuit vacuum road of bleeding in advance that is connected in parallel, and it is connected in parallel node between vacuum tank and the first switch valve; The described vacuum road of bleeding in advance comprises second switch valve and the second vacuum pump being connected in series, and second switch valve and leak locator electrically connect.
4. according to the fast leakage detection apparatus of the nitrogen hydrogen leak locator described in claim 2 or 3 any one, it is characterized in that: described detection gas circuit the 3rd switch valve that is also connected in parallel, it is connected in parallel node between vacuum tank and the first switch valve, and the 3rd switch valve and leak locator electrically connect.
5. the fast leakage detection apparatus of nitrogen hydrogen leak locator according to claim 4, it is characterized in that: be also provided with a purging gas circuit, described purging gas circuit comprises the 4th switch valve and the 5th switch valve, described the 4th switch valve is connected in parallel between the first switch valve and the first vacuum pump, described the 5th switch valve is connected in parallel between the first vacuum pump and leak locator, and the described the 4th and the 5th switch valve all electrically connects with leak locator.
6. the fast leakage detection apparatus of nitrogen hydrogen leak locator according to claim 5, is characterized in that: in described purging gas circuit, the 4th switch valve is connected in series a flow-limiting valve, and described flow-limiting valve is communicated with pure air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320563470.XU CN203422198U (en) | 2013-09-11 | 2013-09-11 | Rapid leak detection apparatus of nitrogen and hydrogen leak detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320563470.XU CN203422198U (en) | 2013-09-11 | 2013-09-11 | Rapid leak detection apparatus of nitrogen and hydrogen leak detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203422198U true CN203422198U (en) | 2014-02-05 |
Family
ID=50021293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320563470.XU Expired - Lifetime CN203422198U (en) | 2013-09-11 | 2013-09-11 | Rapid leak detection apparatus of nitrogen and hydrogen leak detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203422198U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454050A (en) * | 2013-09-11 | 2013-12-18 | 博益(天津)气动技术研究所有限公司 | Fast leakage-detecting device of nitrogen hydrogen leakage detector |
| CN110095237A (en) * | 2019-05-24 | 2019-08-06 | 百尔制冷(无锡)有限公司 | A kind of leak hunting method of refrigeration system |
-
2013
- 2013-09-11 CN CN201320563470.XU patent/CN203422198U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454050A (en) * | 2013-09-11 | 2013-12-18 | 博益(天津)气动技术研究所有限公司 | Fast leakage-detecting device of nitrogen hydrogen leakage detector |
| CN110095237A (en) * | 2019-05-24 | 2019-08-06 | 百尔制冷(无锡)有限公司 | A kind of leak hunting method of refrigeration system |
| CN110095237B (en) * | 2019-05-24 | 2020-10-23 | 百尔制冷(无锡)有限公司 | Leakage detection method of refrigerating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201075051Y (en) | Apparatus for detecting leakage of sealing article | |
| CN204740107U (en) | O type sealing washer leak rate detection device | |
| CN203745156U (en) | Workpiece leak detecting device | |
| CN103454050A (en) | Fast leakage-detecting device of nitrogen hydrogen leakage detector | |
| CN107850508B (en) | Method for checking the tightness of a sealed product and device for detecting leaks | |
| CN103822761A (en) | Sealing detection apparatus and method | |
| CN106226000A (en) | A kind of vacuum leakproofness energy measurement apparatus and method | |
| CN105675224B (en) | The detection method of encapsulating package sealing propertytest system | |
| CN204177537U (en) | A kind of container helium mass spectrum leak detection device | |
| CN102346088B (en) | Leakage detection method for helium mass spectrum with low helium filling concentration | |
| CN104568336A (en) | Helium mass spectrometer leak detection method for sealing workpiece | |
| CN103759904B (en) | System for detecting sealing performance | |
| CN102095557A (en) | Leak-detecting device of super capacitor | |
| CN204988699U (en) | Gas proportional valve test equipment | |
| US20180328810A1 (en) | Leak Detection with Oxygen | |
| CN103913279A (en) | Method and device for testing leakproofness of oil cooler by mixing helium and air | |
| US11719591B2 (en) | Method for detecting leakage of a hollow component and installation for implementing such a method | |
| CN104697726A (en) | Workpiece leak detection device | |
| CN203688176U (en) | Air tightness detection device of lead-acid storage battery | |
| CN203422198U (en) | Rapid leak detection apparatus of nitrogen and hydrogen leak detector | |
| CN201903433U (en) | Leak detector vacuum system | |
| CN204679222U (en) | A kind of gas concentration sniffer | |
| CN204314023U (en) | A kind of vacuum type helium inspection equipment | |
| CN203532847U (en) | Combined valve body device of mass-spectrometer leak detector | |
| CN204286715U (en) | A kind of sealing property testing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANJIN BOYI PNEUMATIC TECHNOLOGY INSTITUTE CO., L Free format text: FORMER NAME: BOYI (TIANJIN) PNEUMATIC TECHNOLOGY INST. CO. LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 300457 Tianjin Binhai New Area Development Zone No. 80 ninth street Fenghua Industrial Park No. 7 Factory Patentee after: BOYI (TIANJIN) PNEUMATIC TECHNOLOGY INSTITUTE Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone No. 80 ninth street Fenghua Industrial Park No. 7 Factory Patentee before: BOYI (TIANJIN) PNEUMATIC TECHNOLOGY RESEARCH INSTITUTE CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140205 |