CN201583390U - Tightness tester - Google Patents

Tightness tester Download PDF

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Publication number
CN201583390U
CN201583390U CN2009202747019U CN200920274701U CN201583390U CN 201583390 U CN201583390 U CN 201583390U CN 2009202747019 U CN2009202747019 U CN 2009202747019U CN 200920274701 U CN200920274701 U CN 200920274701U CN 201583390 U CN201583390 U CN 201583390U
Authority
CN
China
Prior art keywords
measured workpiece
cover
topworks
exocoel
tested workpiece
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 - Fee Related
Application number
CN2009202747019U
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Chinese (zh)
Inventor
李志刚
赵志永
张汉坡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN WEITAI HECHUANG AUTOMATION TECHNOLOGY Co Ltd
Original Assignee
TIANJIN WEITAI HECHUANG AUTOMATION TECHNOLOGY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TIANJIN WEITAI HECHUANG AUTOMATION TECHNOLOGY Co Ltd filed Critical TIANJIN WEITAI HECHUANG AUTOMATION TECHNOLOGY Co Ltd
Priority to CN2009202747019U priority Critical patent/CN201583390U/en
Application granted granted Critical
Publication of CN201583390U publication Critical patent/CN201583390U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a tightness tester, which belongs to the field of testers. The tightness tester comprises a valve, a conduit, a tested workpiece, an outer cover, a pressure sensor and an actuating mechanism, the valve is connected with the tested workpiece through the conduit, the outer cover is positioned outside the tested workpiece, and the pressure sensor is positioned on the outer cover, and is connected with the actuating mechanism. Because the utility model modifies the structure of the traditional tightness tester, that is, an outer cavity is added, the traditional test on the change of the air pressure in the tested workpiece is changed to the test on the air leaking into the outer cavity from the tested workpiece; because the tested workpiece is sealed in the outer cavity, the affection of outside test conditions on the tested workpiece is eliminated, and thereby the precision of test is increased; moreover, automatic and timed test is realized, consequently, manpower is saved, convenience is brought to users, and various needs in practical application can be met.

Description

A kind of device for detecting sealability
Technical field
The utility model relates to the pick-up unit field, particularly a kind of device for detecting sealability.
Background technology
Along with the development of producing, people to the understanding of security progressively improving, in manufacturing industry such as auto parts and components, gas appliance, various valve pressure regulators, the effect that the device for detecting sealability play more and more is important.
Pick-up unit of the prior art mainly comprises as shown in Figure 1: pressure transducer 1, measured workpiece 6, solenoid valve 7, pipeline 8, topworks 9.At first with measured workpiece 6 shutoff, in measured workpiece 6, charging into pressurized air by pipeline 8 under the control of solenoid valve 7, after treating that measured workpiece 6 pressure inside are stable, the pressure of testing in the measured workpiece 6 by pressure transducer 1 changes, again voltage signal is passed to topworks 9, calculated by topworks 9, show test results, the user can judge according to the test result that shows whether leakage has taken place.
In realizing process of the present utility model, the inventor finds that there is following shortcoming at least in prior art: testing result of the prior art is subjected to the influence of outdoor condition such as humidity, temperature, pressure etc. and test piece distortion easily, and measuring accuracy low (being 0.1ml/min), need manually to verify and can't detect fast and accurately, can't satisfy user's actual needs test piece.
Summary of the invention
For fear of outdoor condition and workpiece deformation testing result is exerted an influence, improve accuracy of detection, save manpower, realize test piece is detected fast and accurately, satisfy the needs in the practical application, the utility model embodiment has proposed a kind of device for detecting sealability, and described technical scheme is as follows:
A kind of device for detecting sealability is provided, described device comprises: valve, pipeline, measured workpiece, outer cover, pressure transducer, topworks, described valve links to each other with described measured workpiece by described pipeline, described outer cover is positioned at outside the described measured workpiece, described pressure transducer is positioned on the described outer cover, and described pressure transducer links to each other with described topworks.
Described measured workpiece shutoff forms an inner chamber, and the described effect that covers on described topworks outward descends and the anchor clamps shutoff forms an exocoel, and described measured workpiece is enclosed in the exocoel.
Described topworks comprises: simulating signal amplification converter, controller and touch-screen,
Described simulating signal amplification converter links to each other with described controller, and described controller links to each other with described touch-screen.
Described touch-screen also is used to set detection time and/or qualification determination standard.
The beneficial effects of the utility model:
Change by structure original device for detecting sealability, increased exocoel, make and be changed to the gas that the detection measured workpiece leaks into exocoel by original detection workpiece air pressure inside, because measured workpiece is sealed in the exocoel, has eliminated the influence of extraneous test condition to measured workpiece, has improved accuracy of detection, and realized the self-timing detection, save manpower, made things convenient for the user, satisfied the multiple needs in the practical application.
Description of drawings
Fig. 1 is the synoptic diagram of the device for detecting sealability that provides of prior art;
Fig. 2 is the synoptic diagram of the device for detecting sealability that provides of the utility model embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model embodiment is described in further detail below in conjunction with accompanying drawing.
For fear of outdoor condition and workpiece deformation testing result is exerted an influence, improve accuracy of detection, save manpower, satisfy the needs in the practical application, the utility model embodiment has proposed a kind of device for detecting sealability.
Referring to Fig. 2, the sealing pick-up unit comprises: pressure transducer 1, outer cover 5, measured workpiece 6, valve 7, pipeline 8, topworks 9.Wherein, topworks 9 is made up of simulating signal amplification converter 2, controller 3, touch-screen 4.
Valve 7 links to each other with measured workpiece 6 by pipeline 8, measured workpiece 6 shutoff form an inner chamber, outer cover 5 forms an exocoel with the anchor clamps shutoff under the effect of topworks 9, measured workpiece 6 is enclosed in the exocoel, pressure transducer 1 is arranged on the outer cover 5, pressure transducer 1 is used to measure the rate of change of exocoel density of hydrogen, pressure transducer 1 links to each other with simulating signal amplification converter 2 in the topworks 9, the voltage signal of pressure transducer 1 amplified and be converted to digital signal, digital signal after the conversion is transferred to controller 3 by data bus, controller 3 calculates, and the result after calculating is shown on touch-screen 4.
Concrete operations are as follows during detection: open valve 7, in measured workpiece 6, inject hydrogen-nitrogen mixture gas, hydrogen-nitrogen mixture gas flows in the measured workpiece 6 through pipeline 8, leak if gas takes place measured workpiece 6, then the pressure transducer 1 on the outer cover 5 can sense the variation of density of hydrogen in the exocoel, make the voltage signal on the pressure transducer 1 change, simulating signal amplification converter 2 amplifies the voltage signal of pressure transducer 1 and is converted to digital signal, digital signal after the conversion passes on the controller 3 by data bus, controller 3 can calculate the leakage rate of measured workpiece 6 according to the volume of the rate of change of density of hydrogen in the exocoel and exocoel, wherein, the formula that calculates leakage rate is specially: leakage rate=change rate of concentration * exocoel volume, controller 3 shows the leakage rate that calculates on touch-screen 4.
Wherein, can import the qualification determination standard of setting by touch-screen 4, concrete qualification determination standard can set up on their own according to user's actual requirement, and the utility model does not limit this during specific implementation.If leakage rate is greater than predefined qualification determination standard, then topworks's 9 output alarm signals remind the sealing of user's measured workpiece 6 to have problems; If leakage rate less than predefined qualification determination standard, represents that then the sealing of measured workpiece 6 is good.
Wherein, owing to increased exocoel, measured workpiece 6 is sealed in the exocoel, make that pressure transducer 1 detected pressure is that measured workpiece 6 leaks into the gas in the exocoel, eliminated the influence of extraneous test condition pressure, temperature, humidity to measured workpiece 6, through evidence, the accuracy of detection of sealing pick-up unit is 5 * 10 -4Ml/min.
Wherein, detection time can be preestablished by touch-screen 4, when reaching default detection time, the sealing device can carry out the detection of sealing property by automatic measured workpiece 6, if leakage rate is greater than predefined qualification determination standard, then execution architecture 9 meeting output alarm information remind the sealing of user's measured workpiece 6 to have problems, make things convenient for the user, saved manpower.
In sum, the utility model provides a kind of device for detecting sealability, structure to original device for detecting sealability is changed, increased exocoel, make and be changed to the gas that the detection measured workpiece leaks into exocoel by original detection workpiece air pressure inside, and measured workpiece is sealed in the exocoel, eliminated of the influence of extraneous test condition to measured workpiece, improved accuracy of detection, and realized the self-timing detection, save manpower, made things convenient for the user, satisfied the multiple needs in the practical application.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (4)

1. device for detecting sealability, it is characterized in that, described device comprises: valve, pipeline, measured workpiece, outer cover, pressure transducer, topworks, described valve links to each other with described measured workpiece by described pipeline, described outer cover is positioned at outside the described measured workpiece, described pressure transducer is positioned on the described outer cover, and described pressure transducer links to each other with described topworks.
2. device as claimed in claim 1 is characterized in that, described measured workpiece shutoff forms an inner chamber, and the described effect that covers on described topworks outward descends and the anchor clamps shutoff forms an exocoel, and described measured workpiece is enclosed in the exocoel.
3. device as claimed in claim 1 is characterized in that, described topworks comprises: simulating signal amplification converter, controller and touch-screen,
Described simulating signal amplification converter links to each other with described controller, and described controller links to each other with described touch-screen.
4. device as claimed in claim 1 is characterized in that, described touch-screen also is used to set detection time and/or qualification determination standard.
CN2009202747019U 2009-12-03 2009-12-03 Tightness tester Expired - Fee Related CN201583390U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202747019U CN201583390U (en) 2009-12-03 2009-12-03 Tightness tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202747019U CN201583390U (en) 2009-12-03 2009-12-03 Tightness tester

Publications (1)

Publication Number Publication Date
CN201583390U true CN201583390U (en) 2010-09-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202747019U Expired - Fee Related CN201583390U (en) 2009-12-03 2009-12-03 Tightness tester

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CN (1) CN201583390U (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104535278A (en) * 2014-12-31 2015-04-22 珠海凌达压缩机有限公司 Detecting method and device for work-piece air tightness
CN104697717A (en) * 2013-12-05 2015-06-10 珠海格力电器股份有限公司 Leak detection tooling case and leak detection method thereof
CN104697726A (en) * 2013-12-05 2015-06-10 珠海格力电器股份有限公司 Workpiece leak detection device
CN104964803A (en) * 2015-07-07 2015-10-07 佛山市元九门控科技有限公司 Vacuum leak detection apparatus
CN105910774A (en) * 2016-07-08 2016-08-31 湘电莱特电气有限公司 Motor air-tight test method and facility
CN107991040A (en) * 2017-12-01 2018-05-04 遵义市产品质量检验检测院 A kind of intelligent pressure container leak detection systems
CN109186884A (en) * 2018-10-16 2019-01-11 黄茴茴 A kind of water cooling motor housing detection device for motor production
CN109186885A (en) * 2018-10-16 2019-01-11 黄茴茴 A kind of water-cooled machine air-leakage test instrument for battery production
CN109238585A (en) * 2018-09-26 2019-01-18 芜湖优能自动化设备有限公司 Air-tightness testing device is used in a kind of production of oil discharging seat

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104697717A (en) * 2013-12-05 2015-06-10 珠海格力电器股份有限公司 Leak detection tooling case and leak detection method thereof
CN104697726A (en) * 2013-12-05 2015-06-10 珠海格力电器股份有限公司 Workpiece leak detection device
CN104535278A (en) * 2014-12-31 2015-04-22 珠海凌达压缩机有限公司 Detecting method and device for work-piece air tightness
CN104964803A (en) * 2015-07-07 2015-10-07 佛山市元九门控科技有限公司 Vacuum leak detection apparatus
CN105910774A (en) * 2016-07-08 2016-08-31 湘电莱特电气有限公司 Motor air-tight test method and facility
CN107991040A (en) * 2017-12-01 2018-05-04 遵义市产品质量检验检测院 A kind of intelligent pressure container leak detection systems
CN109238585A (en) * 2018-09-26 2019-01-18 芜湖优能自动化设备有限公司 Air-tightness testing device is used in a kind of production of oil discharging seat
CN109186884A (en) * 2018-10-16 2019-01-11 黄茴茴 A kind of water cooling motor housing detection device for motor production
CN109186885A (en) * 2018-10-16 2019-01-11 黄茴茴 A kind of water-cooled machine air-leakage test instrument for battery production
CN109186884B (en) * 2018-10-16 2020-09-04 上海雷祥压铸有限公司 Water-cooled motor shell detection device for motor production
CN109186885B (en) * 2018-10-16 2020-09-04 黄茴茴 A water cooled machine gas tightness detecting instrument for battery production

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100915

Termination date: 20141203