CN101149307A - Vacuum warming container positive pressure leakage-detecting method - Google Patents
Vacuum warming container positive pressure leakage-detecting method Download PDFInfo
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- CN101149307A CN101149307A CNA2006101461956A CN200610146195A CN101149307A CN 101149307 A CN101149307 A CN 101149307A CN A2006101461956 A CNA2006101461956 A CN A2006101461956A CN 200610146195 A CN200610146195 A CN 200610146195A CN 101149307 A CN101149307 A CN 101149307A
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- leak detection
- insulating container
- vacuum heat
- liquid
- small opening
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Abstract
The invention provides a new method to detect the vacuum heat preservation vessel. It is characterized in that firstly in some positive pressure, the gas or liquid for detection is pressed into the vacuum cavity of production with hole and as the detecting thing, then by the pressure difference, the gas or liquid is leaked out from the hole. So by detecting and recording the leaking thing of some production at some part, it can get the size of hole and its production and position.
Description
Affiliated technical field
What the present invention relates to is a kind of vacuum heat-insulating container leak detection new method.
Background technology
Helium mass spectrum vacuum leak detector and high precision vacuum pump are mainly adopted in vacuum heat-insulating container leak detection at present, not only involve great expense, and hunt leak cost height, low, the poor stability of efficient.
Summary of the invention
The invention provides a kind of new method of vacuum heat-insulating container leak detection, it is characterized in that: at first at certain direct draught, the required gas of leak detection or liquid are pressed into goods and have in the vacuum chamber of small opening as the material of hunting leak, utilize pressure reduction that gas or liquid in the vacuum chamber are leaked out along small opening then, by detecting and note the leak detection material incident of leakage of certain goods, a part, thereby learn goods, position and the size at small opening place.
A kind of concrete detection method is: the vacuum heat-insulating container weld seam that will detect is put into autoclave pressure down in batch, places the leak detection liquid tank below vacuum heat-insulating container, fills leak detection liquid in the leak detection liquid tank; In autoclave pressure, pressurize, just can enter as the positive pressure air of search gas in the vacuum chamber of vacuum heat-insulating container of small opening; Make the air pressure in the autoclave pressure reduce to normal pressure rapidly after the weld seam of vacuum heat-insulating container greatly being approached, contact or immerse leak detection liquid; At this moment, have the interior positive pressure air of vacuum chamber of the vacuum heat-insulating container of small opening just can leak from small opening, leak detection liquid just can react to some extent, and according to leak detection liquid difference, it reports situations also different.
Leak detection liquid can be with the material of hot melt condensation, as the clear wax of paraffin, various prescriptions, low melting point transparent plastic etc.; Also available water or contain the aqueous solution of various frothing agents.
Used leak detection liquid difference, the means of its detection and record also can be different; If make leak detection liquid with the hot melt condensed material, search gas can produce bubble or hole in leak detection liquid inside or surface, and finalizes the design after the thick or condensation in the leak detection liquid cooling.Make people have the sufficient time to observe and judge and write down which goods that small opening is arranged, and the position of small opening and size.
If water or the aqueous solution that contains various frothing agents are made leak detection liquid, because the hold-up time of bubble is limited, to in the limited time, detect by an unaided eye and judge and note which goods that small opening is arranged, and the position of small opening and size, will strict restriction criticize the product amounts that detects together, in case flase drop and omission.
The pressure size of search gas and the composition of frothing agent, the hold-up time that proportioning is determining bubble; And the hold-up time of bubble is determining with batch product amounts that detects.
View window can be set to prolong effective observing time on autoclave pressure.
Can be in autoclave pressure or still external application imaging device (as digital camera, video camera, camera, display etc.) detection case at each welding seam of articles place is carried out observed and recorded, can effectively prevent the generation of flase drop and omission situation.
Another kind of concrete detection method is: the vacuum heat-insulating container weld seam that will detect immerses in the leak detection liquid down, put into the autoclave pressure pressurization, liquid is pressed in the vacuum chamber of vacuum heat-insulating container of small opening, be placed under the normal pressure then, positive pressure gas cognition in the vacuum chamber extrudes vacuum chamber with liquid, the liquid at small opening place can not dry up in for a long time, can detect the liquid that the small opening place exists with very simple methods such as test paper, reagent, suction pipes, thereby detect the position of the goods and the small opening of small opening.Leak detection liquid can be water or have the aqueous solution of Acidity of Aikalinity.
Embodiment
In preceding a kind of scheme,, need with the liquid tank that heating arrangement is arranged if make leak detection liquid with the hot melt condensed material.
In preceding a kind of scheme,, need make liquid tank, so that observed and recorded with transparent material if water or the water that contains various frothing agents are made leak detection liquid.
This detection method device therefor mainly is autoclave pressure and air compressor machine, and its manufacturing cost and use cost is all very low, and can large quantities ofly detect.
Claims (10)
1. the new method of vacuum heat-insulating container leak detection, it is characterized in that: at certain direct draught, the required gas of leak detection or liquid are pressed into goods and have in the vacuum chamber of small opening as the leak detection material, utilize pressure reduction that vacuum chamber interior gas or liquid are leaked out along small opening then; By detecting and note the leak detection material incident of leakage of certain goods, a part, thereby learn goods, position and the size at small opening place.
2. according to the new method of the vacuum heat-insulating container of claim 1 leak detection, it is characterized in that: the vacuum heat-insulating container weld seam that will detect is put into autoclave pressure down in batch, places the liquid tank of hunting leak below vacuum heat-insulating container, fills leak detection liquid in the liquid tank of hunting leak; In autoclave pressure, pressurize, just can enter as the positive pressure air of search gas in the vacuum chamber of vacuum heat-insulating container of small opening; Make the air pressure in the autoclave pressure reduce to normal pressure rapidly after the weld seam of vacuum heat-insulating container greatly being approached, contact or immerse leak detection liquid; At this moment, there is the interior positive pressure air of vacuum chamber of the vacuum heat-insulating container of small opening just can leak, judges the position whether goods have small opening and small opening at the inner or surperficial bubble that produces of leak detection liquid by detecting leakage air from small opening.
3. according to the new method of the vacuum heat-insulating container of claim 2 leak detection, it is characterized in that: described leak detection material is a positive pressure air.
4. according to the new method of the vacuum heat-insulating container of claim 2 leak detection, it is characterized in that: described leak detection liquid is the hot melt condensed material.
5. according to the new method of the vacuum heat-insulating container of claim 4 leak detection, it is characterized in that: described hot melt condensed material is a clear wax.
6. according to the new method of the vacuum heat-insulating container of claim 4 leak detection, it is characterized in that: described hot melt condensed material is the low melting point transparent plastic.
7. the new method of hunting leak according to the vacuum heat-insulating container of claim 2 is characterized in that: with imaging device the detection case at each welding seam of articles place is carried out observed and recorded.
8. according to the new method of the vacuum heat-insulating container of claim 1 leak detection, it is characterized in that: the vacuum heat-insulating container weld seam that will detect immerses in the leak detection liquid down, put into the autoclave pressure pressurization, liquid is pressed in the vacuum chamber of vacuum heat-insulating container of small opening, be placed under the normal pressure then, positive pressure gas cognition in the vacuum chamber extrudes vacuum chamber with liquid, the liquid at small opening place can not dry up in for a long time, detect the liquid that the small opening place exists with test paper, reagent, suction pipe etc., thereby detect the position of the goods and the small opening of small opening.
9. the new method of vacuum heat-insulating container leak detection according to Claim 8, it is characterized in that: described leak detection liquid is water.
10. the new method of vacuum heat-insulating container leak detection according to Claim 8, it is characterized in that: described leak detection liquid is the aqueous solution with Acidity of Aikalinity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101461956A CN101149307A (en) | 2006-11-22 | 2006-11-22 | Vacuum warming container positive pressure leakage-detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101461956A CN101149307A (en) | 2006-11-22 | 2006-11-22 | Vacuum warming container positive pressure leakage-detecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101149307A true CN101149307A (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101461956A Pending CN101149307A (en) | 2006-11-22 | 2006-11-22 | Vacuum warming container positive pressure leakage-detecting method |
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| CN (1) | CN101149307A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101434816B (en) * | 2008-12-15 | 2012-01-18 | 江西洪都航空工业集团有限责任公司 | Vacuum pumping micro-leak repair method |
| CN104002052A (en) * | 2014-06-10 | 2014-08-27 | 昆山宝锦激光拼焊有限公司 | Airflow type tailored blank laser welding bead detecting device |
| CN104697714A (en) * | 2015-02-13 | 2015-06-10 | 金华市志能科技有限公司 | Vacuum leakage detecting and opening sealing device and method |
| CN107367360A (en) * | 2011-06-30 | 2017-11-21 | 赛多利斯史泰迪生物技术有限责任公司 | For the detection method and device of biological reaction container and application |
| CN108284615A (en) * | 2017-01-09 | 2018-07-17 | 通用汽车环球科技运作有限责任公司 | Method for manufacturing a leak-proof porous member |
-
2006
- 2006-11-22 CN CNA2006101461956A patent/CN101149307A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101434816B (en) * | 2008-12-15 | 2012-01-18 | 江西洪都航空工业集团有限责任公司 | Vacuum pumping micro-leak repair method |
| CN107367360A (en) * | 2011-06-30 | 2017-11-21 | 赛多利斯史泰迪生物技术有限责任公司 | For the detection method and device of biological reaction container and application |
| CN107367360B (en) * | 2011-06-30 | 2020-02-07 | 赛多利斯史泰迪生物技术有限责任公司 | Detection method and device for biological reaction container and application |
| CN104002052A (en) * | 2014-06-10 | 2014-08-27 | 昆山宝锦激光拼焊有限公司 | Airflow type tailored blank laser welding bead detecting device |
| CN104697714A (en) * | 2015-02-13 | 2015-06-10 | 金华市志能科技有限公司 | Vacuum leakage detecting and opening sealing device and method |
| CN108284615A (en) * | 2017-01-09 | 2018-07-17 | 通用汽车环球科技运作有限责任公司 | Method for manufacturing a leak-proof porous member |
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Open date: 20080326 |