CN105699026A - Sealing test system and method - Google Patents
Sealing test system and method Download PDFInfo
- Publication number
- CN105699026A CN105699026A CN201610043823.1A CN201610043823A CN105699026A CN 105699026 A CN105699026 A CN 105699026A CN 201610043823 A CN201610043823 A CN 201610043823A CN 105699026 A CN105699026 A CN 105699026A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- differential pressure
- value
- pressure sensor
- detection chambers
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/34—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by testing the possibility of maintaining the vacuum in containers, e.g. in can-testing machines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a sealing test system, and the system comprises a sealed container, a vacuum-pumping device, a detection device, and a PLC controller. The sealed container is provided with a detection cavity and a standard cavity. The detection cavity is communicated with the standard cavity through a first vacuum partitioning valve. The vacuum-pumping device is communicated with the detection cavity through a second vacuum partitioning valve. The detection device is disposed in the sealed container, and is used for detecting a vacuum value of the sealed container. The signal ends of the vacuum-pumping device and the detection device are electrically connected with the PLC controller. Compared with the prior art, the system is simple in structure, is convenient to operate, is high in testing speed and precision, and can precisely obtain a leakage value. In addition, the invention also discloses a sealing test method for testing the sealing degree of a product through employing the above system.
Description
Technical field
The invention belongs to food, medical packaging sealing propertytest field, be specifically related to a kind of sealing test system and tightness testing method。
Background technology
The sealing propertytest of current medicine is always up being in a kind of ambiguous state in pharmacy procedure, have and thoroughly believe packaging No leakage or leakage is directly ignored in allowed band, this does not meet the national quality management regulation of GMP defined, and medicine is used the very big hidden danger of security presence；More then be use comparatively ancient Microbial Challenge method, microorganism is utilized to invade medicine to be checked thus testing the qualification of medicine, the shallowness of the method is long for the detection time cycle, and the detection of medicine to be checked is caused irreversible destruction, there is no precision data, pass through/accuracy of failure testing result is problematic。
Summary of the invention
The invention provides a kind of sealing test system and tightness testing method, it is therefore intended that solve problems of the prior art, it is provided that a kind of detect that the cycle is short, speed fast, the sealing test system of detection accurate data and method of testing。
For achieving the above object, embodiments provide a kind of sealing test system, including hermetic container, vacuum extractor, detecting device, PLC, described hermetic container has a detection chambers and standard chamber, described detection chambers is connected with described standard chamber by the first vacuum isolating valve, described vacuum extractor is connected with described detection chambers by the second vacuum isolating valve, described detecting device is arranged in described hermetic container, for detecting vacuum values in described hermetic container, described vacuum extractor, the signal end of described detecting device electrically connects with described PLC。
In technique scheme, the detection chambers in described hermetic container and standard chamber is connected by the first vacuum isolating valve, standard chamber is by the second vacuum isolating valve connection vacuum extractor, detecting device is arranged in detection chambers and standard chamber, and and electrically connect with PLC, make after evacuation, by first, second vacuum isolating valve cuts off two identical airtight vacuum cavitys of initial vacuum value, after keeping a period of time, PLC draws the pressure difference of standard chamber and detection chambers, such that it is able to conveniently draw the leakage situation of detection article, avoid and article to be detected are destroyed, ensure that the integrity after article to be detected are after testing, and may be repeated detection, the product reperformance test of detection will do not passed through, obtain leak data the most accurately。
Further, described detecting device includes little differential pressure sensor, vacuum film rule, described little differential pressure sensor has positive and negative end, described little differential pressure sensor negative terminal, described vacuum film rule are arranged in described standard chamber, described little differential pressure sensor anode is arranged in described detection chambers, and little differential pressure sensor, vacuum film rule signal output part all electrically connects with described PLC。
In technique scheme, by adopting little differential pressure sensor, it is greatly improved the gas sensitization degree leaked out；Have employed vacuum film rule, improve the degree of accuracy of vacuum values so that the small opening that minimum detectable is 5 microns, meanwhile, the vacuum film vacuum to reach of rule can be set according to the different medicine property of medicine and adjust the precision of test。
Further, described sealing test system also includes a display device, described display device electrically connects with described PLC, is used for showing the pressure history in the numerical value of described little differential pressure sensor, vacuum film rule detection and the drawn out detection chambers of described PLC and standard chamber。
Further, described vacuum extractor includes the first vacuum pump, the second vacuum pump, the 3rd vacuum pump, and described first vacuum pump, the second vacuum pump, the 3rd vacuum pump are sequentially connected in series connection, and described first vacuum pump is connected with described second vacuum isolating valve。By adopting three vacuum pumps being sequentially connected in series to sealing test system evacuation, can effectively improve evacuation efficiency, and meet fine vacuum demand。
The present invention also provides for the tightness testing method of a kind of seal degree utilizing sealing test system test product described above, comprises the following steps:
S1, being placed in detection chambers by medicine to be detected, close detection chambers door, open described first vacuum isolating valve, the second vacuum isolating valve, hermetic container is carried out evacuation by vacuum extractor；
S2, after in hermetic container, vacuum values reaches preset value, close the second vacuum isolating valve, the first vacuum isolating valve successively, it is P that described detecting device detects and record the initial vacuum value in now hermetic container；
S3, maintenance certain time interval T, it is P' that described detecting device detects and record the vacuum values in T time hermetic container；
S4, by described initial vacuum value P compared with keeping the described vacuum values P' that records after T time, show that the differential pressure value between P and P' is Δ P', if, Δ P' be on the occasion of time, then illustrate that interior the detected medicine of detection chambers has leakage。
Further, in above-mentioned S2, described detecting device includes little differential pressure sensor, vacuum film rule, described little differential pressure sensor has positive and negative end, described little differential pressure sensor negative terminal, described vacuum film rule are arranged in described standard chamber, and described little differential pressure sensor anode is arranged in described detection chambers；
The initial vacuum value that described vacuum film rule are detected in described standard chamber is P2, after T time, described vacuum film rule are detected and recorded the standard vacuum value in standard chamber described in T time is P1, and the differential pressure value Δ P1 between described P1 and P2 is then the leakage value of standard vacuum；
The initial vacuum value that described little differential pressure sensor detects in described detection chambers is P4, after T time, it is P3 that described little differential pressure sensor detects and record the vacuum values in described detection chambers during T time, and the differential pressure value Δ P2 between described P3 and P4 is then the leakage value of detection chambers；The difference DELTA P of the leakage value Δ P2 of described detection chambers and the leakage value Δ P1 of described standard vacuum is the leakage value of detection medicine。
The present invention has the beneficial effect that:
1, highly sensitive: owing to system with the addition of little differential pressure sensor, it is greatly improved the gas sensitization degree that medicine is leaked out, vacuum film rule are also more than common vacuum transducer simultaneously, and the accuracy for vacuum values is very accurate so that the small opening that vacuum detection instrument minimum detectable is 5 microns。
2, detection sensitivity is adjustable: sets the vacuum film vacuum to reach of rule according to the different medicine property of medicine and adjusts the precision of test。
3, to medicine be lossless, repeat: vacuum test will not destroy the property of medicine of medicine, and the medicine of logical test is repeatable to be entered test again and obtain leak data the most accurately。
4, the detection time is short: the detection time of single product to be detected is within the 0-30 second。
Compared with prior art, sealing test system structure provided by the present invention is simple, and easy and simple to handle, test period is short, test speed is fast, accurate testing degree high, can draw leakage value accurately。
Accompanying drawing explanation
The structural representation of a kind of sealing test system that Fig. 1 provides for the embodiment of the present invention；
The flow chart of a kind of tightness testing method that Fig. 2 provides for the embodiment of the present invention；
In figure, 1-standard chamber, 2-detection chambers, 3-vacuum extractor, 4-the first vacuum isolating valve, 5-the second vacuum isolating valve, 6-detecting device, 61-vacuum film is advised, 62-little differential pressure sensor。
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with detailed description of the invention and with reference to accompanying drawing, the present invention is described in more detail。It should be understood that these descriptions are illustrative of, and it is not intended to limit the scope of the present invention。Additionally, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring idea of the invention。
Embodiment
As shown in Figure 1, embodiments provide a kind of sealing test system, including hermetic container, vacuum extractor 3, detecting device 6, PLC (not shown), described hermetic container has a detection chambers 2 and standard chamber 1, described detection chambers 2 is connected with described standard chamber 1 by the first vacuum isolating valve 4, described vacuum extractor 3 is connected with described standard chamber by the second vacuum isolating valve 5, in the present embodiment, preferably, described vacuum extractor 3 includes the first vacuum pump, second vacuum pump, 3rd vacuum pump, described first vacuum pump, second vacuum pump, 3rd vacuum pump is sequentially connected in series connection, described first vacuum pump is connected with described second vacuum isolating valve 5；By adopting three vacuum pumps being sequentially connected in series to sealing test system evacuation, can effectively improve evacuation efficiency, and meet fine vacuum demand。
Described detecting device 6 is arranged in described hermetic container, for detecting vacuum values in described hermetic container, in the present embodiment, described detecting device 6 includes little differential pressure sensor 62, vacuum film rule 61, described little differential pressure sensor 62 just has, negative terminal, the negative terminal of described little differential pressure sensor 62, described vacuum film rule 61 are arranged in described standard chamber 1, the anode of described little differential pressure sensor 62 is arranged in described detection chambers 2, described little differential pressure sensor 62, the signal output part of vacuum film rule 61 all electrically connects with described PLC, the signal end of described vacuum extractor 3 electrically connects with described PLC。
Described sealing test system also includes a display device (not shown), described display device electrically connects with described PLC, for showing that described little differential pressure sensor 62, vacuum film advise the pressure history in 61 numerical value detected and the drawn out detection chambers 2 of described PLC and standard chamber 1。
As in figure 2 it is shown, the present invention also provides for the tightness testing method of a kind of seal degree utilizing sealing test system test product described above, comprise the following steps:
S1, being placed in detection chambers by medicine to be detected, close detection chambers door, open described first vacuum isolating valve, the second vacuum isolating valve, hermetic container is carried out evacuation by vacuum extractor；
S2, after in hermetic container, vacuum values reaches preset value, close the second vacuum isolating valve, the first vacuum isolating valve successively, it is P that described detecting device detects and record the initial vacuum value in now hermetic container；
S3, maintenance certain time interval T, it is P' that described detecting device detects and record the vacuum values in T time hermetic container；
S4, by described initial vacuum value P compared with keeping the described vacuum values P' that records after T time, show that the differential pressure value between P and P' is Δ P', if, Δ P' be on the occasion of time, then illustrate that interior the detected medicine of detection chambers has leakage。
The operation principle of the present invention is as follows:
Medicine to be detected is placed in detection chambers, close detection chambers door, open described first vacuum isolating valve, second vacuum isolating valve, hermetic container is carried out evacuation by vacuum extractor, after in hermetic container, vacuum values reaches preset value, close the second vacuum isolating valve successively, first vacuum isolating valve, the initial vacuum value that described vacuum film rule are detected in described standard chamber is P2, after T time, described vacuum film rule are detected and recorded the standard vacuum value in standard chamber described in T time is P1, differential pressure value Δ P1 between described P1 and P2 is then the leakage value of standard vacuum；The initial vacuum value that described little differential pressure sensor detects in described detection chambers is P4, after T time, it is P3 that described little differential pressure sensor detects and record the vacuum values in described detection chambers during T time, and the differential pressure value Δ P2 between described P3 and P4 is then the leakage value of detection chambers；Draw out the pressure history in detection chambers and standard chamber respectively, obtain the slip of detection chambers；The difference DELTA P of the leakage value Δ P2 of described detection chambers and the leakage value Δ P1 of described standard vacuum is the leakage value of detection medicine。
It should be appreciated that the above-mentioned detailed description of the invention of the present invention is used only for exemplary illustration or explains principles of the invention, and it is not construed as limiting the invention。Therefore, any amendment of making when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., should be included within protection scope of the present invention。Additionally, claims of the present invention be intended to fall in the equivalents on scope and border or this scope and border whole change and modifications example。
Claims (6)
1. a sealing test system, it is characterized in that, including hermetic container, vacuum extractor, detecting device, PLC, described hermetic container has a detection chambers and standard chamber, described detection chambers is connected with described standard chamber by the first vacuum isolating valve, described vacuum extractor is connected with described detection chambers by the second vacuum isolating valve, described detecting device is arranged in described hermetic container, for detecting vacuum values in described hermetic container, described vacuum extractor, described detecting device signal end electrically connect with described PLC。
2. sealing test system according to claim 1, it is characterized in that, described detecting device includes little differential pressure sensor, vacuum film rule, described little differential pressure sensor has positive and negative end, described little differential pressure sensor negative terminal, described vacuum film rule are arranged in described standard chamber, described little differential pressure sensor anode is arranged in described detection chambers, and little differential pressure sensor, vacuum film rule signal output part all electrically connects with described PLC。
3. sealing test system according to claim 2, it is characterized in that, described sealing test system also includes a display device, described display device electrically connects with described PLC, is used for showing the pressure history in the numerical value of described little differential pressure sensor, vacuum film rule detection and the drawn out detection chambers of described PLC and standard chamber。
4. sealing test system according to claim 1, it is characterized in that, described vacuum extractor includes the first vacuum pump, the second vacuum pump, the 3rd vacuum pump, described first vacuum pump, the second vacuum pump, the 3rd vacuum pump are sequentially connected in series connection, and described first vacuum pump is connected with described second vacuum isolating valve。
5. a tightness testing method, utilizes the seal degree of sealing test system test product described in any one of claim 1 to 4, it is characterised in that comprise the following steps:
S1, being placed in detection chambers by medicine to be detected, close detection chambers door, open described first vacuum isolating valve, the second vacuum isolating valve, hermetic container is carried out evacuation by vacuum extractor；
S2, after in hermetic container, vacuum values reaches preset value, close the second vacuum isolating valve, the first vacuum isolating valve successively, it is P that described detecting device detects and record the initial vacuum value in now hermetic container；
S3, maintenance certain time interval T, it is P' that described detecting device detects and record the vacuum values in T time hermetic container；
S4, by described initial vacuum value P compared with keeping the described vacuum values P' that records after T time, show that the differential pressure value between P and P' is Δ P', if, Δ P' be on the occasion of time, then illustrate that interior the detected medicine of detection chambers has leakage。
6. a kind of tightness testing method according to claim 5, it is characterized in that, in described S2, described detecting device includes little differential pressure sensor, vacuum film rule, described little differential pressure sensor has positive and negative end, described little differential pressure sensor negative terminal, described vacuum film rule are arranged in described standard chamber, and described little differential pressure sensor anode is arranged in described detection chambers；
The initial vacuum value that described vacuum film rule are detected in described standard chamber is P2, after T time, described vacuum film rule are detected and recorded the standard vacuum value in standard chamber described in T time is P1, and the differential pressure value Δ P1 between described P1 and P2 is then the leakage value of standard vacuum；
The initial vacuum value that described little differential pressure sensor detects in described detection chambers is P4, after T time, it is P3 that described little differential pressure sensor detects and record the vacuum values in described detection chambers during T time, and the differential pressure value Δ P2 between described P3 and P4 is then the leakage value of detection chambers；The difference DELTA P of the leakage value Δ P2 of described detection chambers and the leakage value Δ P1 of described standard vacuum is the leakage value of detection medicine。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043823.1A CN105699026B (en) | 2016-01-22 | 2016-01-22 | A kind of sealing test system and tightness testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043823.1A CN105699026B (en) | 2016-01-22 | 2016-01-22 | A kind of sealing test system and tightness testing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105699026A true CN105699026A (en) | 2016-06-22 |
| CN105699026B CN105699026B (en) | 2019-07-09 |
Family
ID=56228437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610043823.1A Active CN105699026B (en) | 2016-01-22 | 2016-01-22 | A kind of sealing test system and tightness testing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105699026B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560804A (en) * | 2017-09-05 | 2018-01-09 | 上海肇民动力科技有限公司 | A kind of check valve air tightness detecting system and method |
| CN107907273A (en) * | 2017-10-27 | 2018-04-13 | 辽沈工业集团有限公司 | A kind of partially sealed outer surface air-tightness detection method of product |
| CN108267280A (en) * | 2016-12-30 | 2018-07-10 | 致茂电子(苏州)有限公司 | Air-tightness detection method and air-tightness detection device |
| CN108387691A (en) * | 2018-04-02 | 2018-08-10 | 杭州赛威斯真空技术有限公司 | A kind of material air-breathing deflation rate test device |
| CN111289188A (en) * | 2018-12-10 | 2020-06-16 | 广州敏达包装设备有限公司 | Non-contact vacuum detection method |
| CN112798201A (en) * | 2021-02-02 | 2021-05-14 | 肇庆金马领科智能科技有限公司 | Closestool leak hunting machine and closestool production line |
| CN113341863A (en) * | 2021-06-04 | 2021-09-03 | 广东鑫钻节能科技股份有限公司 | Efficient energy-saving vacuum system |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333115A (en) * | 1990-03-09 | 1994-07-26 | Emerson Electric Co. | Line leak test apparatus responsive to pump use |
| CN101034032A (en) * | 2007-04-27 | 2007-09-12 | 天津力神电池股份有限公司 | Accurate detecting method for cavity leakage of lithium-ion battery and device thereof |
| CN201075051Y (en) * | 2007-08-16 | 2008-06-18 | 博益(天津)气动技术研究所有限公司 | Apparatus for detecting leakage of sealing article |
| CN101373163A (en) * | 2007-08-23 | 2009-02-25 | 博益(天津)气动技术研究所有限公司 | Method for drafting differential pressure and leakage amount relation curve by leak hole method |
| CN101373162A (en) * | 2007-08-23 | 2009-02-25 | 博益(天津)气动技术研究所有限公司 | Method for drafting differential pressure and leakage amount relation curve in leak detection of seal article |
| CN101587006A (en) * | 2009-06-18 | 2009-11-25 | 齐诺精密系统自动化(天津)有限公司 | Air tightness detecting system used for lithium battery and detecting method thereof |
| CN202018370U (en) * | 2011-03-31 | 2011-10-26 | 重庆巨创计量设备股份有限公司 | Micro differential pressure type full-automatic gas meter airtightness detecting system |
| CN202188940U (en) * | 2011-08-04 | 2012-04-11 | 松下电工·万宝电器（广州）有限公司 | Equipment for detecting sealing performance of commodities |
| CN102445312A (en) * | 2011-10-09 | 2012-05-09 | 北京化工大学 | Testing apparatus for plastic airtightness and method thereof |
| CN102494856A (en) * | 2011-11-14 | 2012-06-13 | 天津力神电池股份有限公司 | Automatic detecting equipment of polymer lithium ion battery leaked liquid |
| CN102589820A (en) * | 2012-02-06 | 2012-07-18 | 江苏东方航天校准检测有限公司 | System and method for calibrating lower limit of positive-pressure leak by extending constant volume method |
| CN103439055A (en) * | 2013-06-13 | 2013-12-11 | 中国计量学院 | Novel differential pressure gas tightness detection temperature compensation method |
| CN104034495A (en) * | 2013-03-06 | 2014-09-10 | 楚天科技股份有限公司 | Vacuum leak detection method and vacuum leak detection system for containers |
| CN104236826A (en) * | 2014-09-26 | 2014-12-24 | 清华大学 | Bagged product tightness detection device and method |
| CN204855120U (en) * | 2015-08-14 | 2015-12-09 | 深圳市富康实业有限公司 | A detection mechanism for detecting whether sealed package body leaks gas |
| CN205483455U (en) * | 2016-01-22 | 2016-08-17 | 上海严复制药系统工程有限公司 | Sealing test system |
-
2016
- 2016-01-22 CN CN201610043823.1A patent/CN105699026B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333115A (en) * | 1990-03-09 | 1994-07-26 | Emerson Electric Co. | Line leak test apparatus responsive to pump use |
| CN101034032A (en) * | 2007-04-27 | 2007-09-12 | 天津力神电池股份有限公司 | Accurate detecting method for cavity leakage of lithium-ion battery and device thereof |
| CN201075051Y (en) * | 2007-08-16 | 2008-06-18 | 博益(天津)气动技术研究所有限公司 | Apparatus for detecting leakage of sealing article |
| CN101373163A (en) * | 2007-08-23 | 2009-02-25 | 博益(天津)气动技术研究所有限公司 | Method for drafting differential pressure and leakage amount relation curve by leak hole method |
| CN101373162A (en) * | 2007-08-23 | 2009-02-25 | 博益(天津)气动技术研究所有限公司 | Method for drafting differential pressure and leakage amount relation curve in leak detection of seal article |
| CN101587006A (en) * | 2009-06-18 | 2009-11-25 | 齐诺精密系统自动化(天津)有限公司 | Air tightness detecting system used for lithium battery and detecting method thereof |
| CN202018370U (en) * | 2011-03-31 | 2011-10-26 | 重庆巨创计量设备股份有限公司 | Micro differential pressure type full-automatic gas meter airtightness detecting system |
| CN202188940U (en) * | 2011-08-04 | 2012-04-11 | 松下电工·万宝电器（广州）有限公司 | Equipment for detecting sealing performance of commodities |
| CN102445312A (en) * | 2011-10-09 | 2012-05-09 | 北京化工大学 | Testing apparatus for plastic airtightness and method thereof |
| CN102494856A (en) * | 2011-11-14 | 2012-06-13 | 天津力神电池股份有限公司 | Automatic detecting equipment of polymer lithium ion battery leaked liquid |
| CN102589820A (en) * | 2012-02-06 | 2012-07-18 | 江苏东方航天校准检测有限公司 | System and method for calibrating lower limit of positive-pressure leak by extending constant volume method |
| CN104034495A (en) * | 2013-03-06 | 2014-09-10 | 楚天科技股份有限公司 | Vacuum leak detection method and vacuum leak detection system for containers |
| CN103439055A (en) * | 2013-06-13 | 2013-12-11 | 中国计量学院 | Novel differential pressure gas tightness detection temperature compensation method |
| CN104236826A (en) * | 2014-09-26 | 2014-12-24 | 清华大学 | Bagged product tightness detection device and method |
| CN204855120U (en) * | 2015-08-14 | 2015-12-09 | 深圳市富康实业有限公司 | A detection mechanism for detecting whether sealed package body leaks gas |
| CN205483455U (en) * | 2016-01-22 | 2016-08-17 | 上海严复制药系统工程有限公司 | Sealing test system |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267280A (en) * | 2016-12-30 | 2018-07-10 | 致茂电子(苏州)有限公司 | Air-tightness detection method and air-tightness detection device |
| CN107560804A (en) * | 2017-09-05 | 2018-01-09 | 上海肇民动力科技有限公司 | A kind of check valve air tightness detecting system and method |
| CN107907273A (en) * | 2017-10-27 | 2018-04-13 | 辽沈工业集团有限公司 | A kind of partially sealed outer surface air-tightness detection method of product |
| CN107907273B (en) * | 2017-10-27 | 2019-09-27 | 辽沈工业集团有限公司 | A kind of partially sealed outer surface air-tightness detection method of product |
| CN108387691A (en) * | 2018-04-02 | 2018-08-10 | 杭州赛威斯真空技术有限公司 | A kind of material air-breathing deflation rate test device |
| CN108387691B (en) * | 2018-04-02 | 2023-08-22 | 杭州赛威斯真空技术有限公司 | Material gassing rate testing arrangement that breathes in |
| CN111289188A (en) * | 2018-12-10 | 2020-06-16 | 广州敏达包装设备有限公司 | Non-contact vacuum detection method |
| CN111289188B (en) * | 2018-12-10 | 2022-04-19 | 广州敏达包装设备有限公司 | Non-contact vacuum detection method |
| CN112798201A (en) * | 2021-02-02 | 2021-05-14 | 肇庆金马领科智能科技有限公司 | Closestool leak hunting machine and closestool production line |
| CN113341863A (en) * | 2021-06-04 | 2021-09-03 | 广东鑫钻节能科技股份有限公司 | Efficient energy-saving vacuum system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105699026B (en) | 2019-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105699026A (en) | Sealing test system and method | |
| US9810600B2 (en) | Method for detecting a leak on a non-rigid test specimen | |
| CN110160714B (en) | Soft package battery airtightness inspection system and method | |
| US10247637B2 (en) | Differential pressure measurement with film chamber | |
| CN100578176C (en) | Detecting method for flexible packing products air tightness | |
| CN107076636B (en) | Thin film chamber with a measurement volume for a coarse leak test | |
| CN101587006A (en) | Air tightness detecting system used for lithium battery and detecting method thereof | |
| CN106662498B (en) | Measurement of gas density increase in a thin film chamber | |
| CN105300869A (en) | Device and method for measuring gas permeability of material by virtue of differential vacuum gauge | |
| CN206710042U (en) | A kind of lithium ion battery helium leak check instrument | |
| CN104865026A (en) | Polyethylene valve sealing performance room temperature low pressure test method | |
| CN104614136A (en) | Vacuum decay method for testing leak of cigarette packaging body | |
| CN208239037U (en) | A kind of valve seal device for detecting performance | |
| CN104568347A (en) | Testing device and testing method for testing leakage of small cigarette case | |
| CN205483455U (en) | Sealing test system | |
| CN109141769A (en) | Alleviate the method that level Hermetic Package component seals thin leak test helium degree of absorption | |
| CN104797916A (en) | Method for testing a leak tightness testing system | |
| RU2543692C1 (en) | Apparatus for inspecting air-tightness of large-size objects | |
| CN204269323U (en) | A kind of proving installation tested box cigarette small packaging and leak | |
| CN110553802B (en) | Leakage detection device and method for large leakage measurement | |
| CN113138057A (en) | Soft package battery leakage detection method and system | |
| CN104111150A (en) | Device for detecting airtightness of container detection port and detection method | |
| CN111413043A (en) | Device and method for detecting sealing performance of sealing element | |
| US10545068B2 (en) | Arrangement and method for testing the tightness of a container | |
| CN204269324U (en) | A kind of vacuum decay method test cigarette package body leakage tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |