CN204165719U - Air-leakage detector - Google Patents
Air-leakage detector Download PDFInfo
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- CN204165719U CN204165719U CN201420509397.2U CN201420509397U CN204165719U CN 204165719 U CN204165719 U CN 204165719U CN 201420509397 U CN201420509397 U CN 201420509397U CN 204165719 U CN204165719 U CN 204165719U
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- valve
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- air
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- measured piece
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Abstract
The utility model discloses a kind of air-leakage detector, it relates to airtight watertight detection technique field.It comprises source of the gas, filtrator, reduction valve, absolute pressure sensor, gas admittance valve, air release, Air pressure control release valve, the sub-valve of standard component, the sub-valve of measured piece, differential pressure pick-up and communicating valve, source of the gas is connected with Air pressure control release valve with reduction valve respectively by filtrator, reduction valve, absolute pressure sensor, gas admittance valve, air release is connected successively, Air pressure control release valve respectively with gas admittance valve, air release, the sub-valve of standard component, the sub-valve of measured piece, communicating valve is connected, the sub-valve of standard component, the sub-valve of measured piece is in parallel, the sub-valve of standard component in parallel, the sub-valve of measured piece is also in parallel with differential pressure pick-up and communicating valve, communicating valve two ends respectively with standard component and measured piece.The utility model Detection results is good, and precision is high, substantially increases detection efficiency.
Description
Technical field
The utility model relates to airtight watertight detection technique field, be specifically related to a kind of air-leakage detector.
Background technology
Air-leakage test also claims Leak Detection, the air-tightness of seal is one of key factor affecting product quality, therefore, in many industries such as automobile, air-conditioning, refrigerator, air-leakage test is much important parts and assembly, as gray iron, engine assembly, refrigeration system etc., essential items for inspection in process of production.The classic method of air-leakage test has bubble method, direct pressure method, helium mass spectroscopy etc.Bubble method is directly perceived, but testing efficiency is low, affects more greatly and easily judge by accident by subjective factor, can only qualitatively judge, and is difficult to make rational judgment; Direct pressure method structure is simple, but precision is low; Helium mass spectroscopy precision is high, but high cost.
Utility model content
For the deficiency that prior art exists, the utility model object is to provide a kind of air-leakage detector, and Detection results is good, and precision is high, substantially increases detection efficiency.
To achieve these goals, the utility model realizes by the following technical solutions: air-leakage detector, comprise source of the gas, filtrator, reduction valve, absolute pressure sensor, gas admittance valve, air release, Air pressure control release valve, the sub-valve of standard component, the sub-valve of measured piece, differential pressure pick-up and communicating valve, source of the gas is connected with Air pressure control release valve with reduction valve respectively by filtrator, reduction valve, absolute pressure sensor, gas admittance valve, air release is connected successively, Air pressure control release valve respectively with gas admittance valve, air release, the sub-valve of standard component, the sub-valve of measured piece, communicating valve is connected, the sub-valve of standard component, the sub-valve of measured piece is in parallel, the sub-valve of standard component in parallel, the sub-valve of measured piece is also in parallel with differential pressure pick-up and communicating valve, communicating valve two ends respectively with standard component and measured piece.
The sub-valve of described gas admittance valve, air release, standard component, the sub-valve of measured piece and communicating valve are twin-stage Air control valve.
The beneficial effects of the utility model: Detection results is good, and precision is high, substantially increases detection efficiency.
Accompanying drawing explanation
The utility model is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is structural representation of the present utility model.
Embodiment
The technological means realized for making the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the utility model further.
With reference to Fig. 1, this embodiment is by the following technical solutions: air-leakage detector, comprise source of the gas 1, filtrator 2, reduction valve 3, absolute pressure sensor 4, gas admittance valve 5, air release 6, Air pressure control release valve 7, the sub-valve 8 of standard component, the sub-valve 9 of measured piece, differential pressure pick-up 10 and communicating valve 11, source of the gas 1 is connected with Air pressure control release valve 7 with reduction valve 3 respectively by filtrator 2, reduction valve 3, absolute pressure sensor 4, gas admittance valve 5, air release 6 is connected successively, Air pressure control release valve 7 respectively with gas admittance valve 5, air release 6, the sub-valve 8 of standard component, the sub-valve 9 of measured piece, communicating valve 11 is connected, the sub-valve 8 of standard component, the sub-valve 9 of measured piece is in parallel, the sub-valve 8 of standard component in parallel, the sub-valve of measured piece 9 is also in parallel with differential pressure pick-up 10 and communicating valve 11, communicating valve 11 two ends respectively with standard component 12 and measured piece 13.
It should be noted that described gas admittance valve 5, air release 6, the sub-valve of standard component 8, the sub-valve 9 of measured piece and communicating valve 11 are twin-stage Air control valve.
This embodiment utilizes micro differential pressure principle, adopt accurate symmetrical gas circuit, standard component and measured piece are filled with simultaneously to the gas of uniform pressure in testing process, the equilibration time that process presets is to reach the balance of whole air-channel system, if measured piece is revealed, balance will be broken, and at this moment utilize high precision little differential pressure sensor to obtain differential pressure.Gas circuit design Plays part is identical with measured piece size, and shape is the same, gas circuit Striking symmetry.
The whole testing process of this embodiment is by the phase of inflating, and the first balance period, the second balance period, detection period and venting phase composition, be in waiting status when instrument does not work, the on off state of each valve is as shown in table 1.Detector closes air release when the inflation phase starts, and other valve is entirely opened and inflated, and closes gas admittance valve when being inflated to setting air pressure; The sub-valve of standard component 8, the sub-valve 9 of measured piece is closed at the end of the first equilibration time; Communicating valve 11 is closed after the second balance period starts to expect setting-up time, two subsystems are completely divided into make standard component and measured piece, two subsystems is made to reach stable gas pressure state as early as possible, wherein first, second equilibration time all by user by keyboard sets itself, can test effect to reach best.
This embodiment Detection results is good, and precision is high, substantially increases detection efficiency.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. air-leakage detector, is characterized in that, comprises source of the gas (1), filtrator (2), reduction valve (3), absolute pressure sensor (4), gas admittance valve (5), air release (6), Air pressure control release valve (7), the sub-valve of standard component (8), the sub-valve of measured piece (9), differential pressure pick-up (10) and communicating valve (11), source of the gas (1) is connected with Air pressure control release valve (7) with reduction valve (3) respectively by filtrator (2), reduction valve (3), absolute pressure sensor (4), gas admittance valve (5), air release (6) is connected successively, Air pressure control release valve (7) respectively with gas admittance valve (5), air release (6), the sub-valve of standard component (8), the sub-valve of measured piece (9), communicating valve (11) is connected, the sub-valve of standard component (8), the sub-valve of measured piece (9) is in parallel, the sub-valve of standard component (8) in parallel, the sub-valve of measured piece (9) is also in parallel with differential pressure pick-up (10) and communicating valve (11), communicating valve (11) two ends respectively with standard component (12) and measured piece (13).
2. air-leakage detector according to claim 1, it is characterized in that, described gas admittance valve (5), air release (6), the sub-valve of standard component (8), the sub-valve of measured piece (9) and communicating valve (11) are twin-stage Air control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420509397.2U CN204165719U (en) | 2014-09-05 | 2014-09-05 | Air-leakage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420509397.2U CN204165719U (en) | 2014-09-05 | 2014-09-05 | Air-leakage detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204165719U true CN204165719U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420509397.2U Expired - Fee Related CN204165719U (en) | 2014-09-05 | 2014-09-05 | Air-leakage detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN204165719U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699022A (en) * | 2016-04-12 | 2016-06-22 | 苏州寅泽缕弦电子技术有限公司 | Gas leakage detector for sealing device |
| CN106441733A (en) * | 2016-09-20 | 2017-02-22 | 深圳市燕麦科技股份有限公司 | Airtightness testing device |
| CN108627308A (en) * | 2018-06-29 | 2018-10-09 | 杭州固恒能源科技有限公司 | From high-pressure air source to the inflation method of workpiece, air charging system and differential pressure air-leakage detector |
| CN112179580A (en) * | 2020-09-02 | 2021-01-05 | 格力电器（武汉）有限公司 | Leak detection device and leak detection method |
| CN118758520A (en) * | 2024-09-02 | 2024-10-11 | 福建省超年科技股份有限公司 | Multi-station detection system for electronic component tightness test |
-
2014
- 2014-09-05 CN CN201420509397.2U patent/CN204165719U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699022A (en) * | 2016-04-12 | 2016-06-22 | 苏州寅泽缕弦电子技术有限公司 | Gas leakage detector for sealing device |
| CN106441733A (en) * | 2016-09-20 | 2017-02-22 | 深圳市燕麦科技股份有限公司 | Airtightness testing device |
| CN108627308A (en) * | 2018-06-29 | 2018-10-09 | 杭州固恒能源科技有限公司 | From high-pressure air source to the inflation method of workpiece, air charging system and differential pressure air-leakage detector |
| CN112179580A (en) * | 2020-09-02 | 2021-01-05 | 格力电器（武汉）有限公司 | Leak detection device and leak detection method |
| CN118758520A (en) * | 2024-09-02 | 2024-10-11 | 福建省超年科技股份有限公司 | Multi-station detection system for electronic component tightness test |
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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 |
Granted publication date: 20150218 Termination date: 20180905 |
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| CF01 | Termination of patent right due to non-payment of annual fee |