CN109282949A - Special-shaped junction block air tightness checking device - Google Patents
Special-shaped junction block air tightness checking device Download PDFInfo
- Publication number
- CN109282949A CN109282949A CN201710593997.XA CN201710593997A CN109282949A CN 109282949 A CN109282949 A CN 109282949A CN 201710593997 A CN201710593997 A CN 201710593997A CN 109282949 A CN109282949 A CN 109282949A
- Authority
- CN
- China
- Prior art keywords
- rubber sheet
- sheet gasket
- test specimen
- bracket
- pressing plate
- 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
- 239000001307 helium Substances 0.000 claims abstract description 23
- 229910052734 helium Inorganic materials 0.000 claims abstract description 23
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 12
- 239000007921 spray Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A kind of special-shaped junction block air tightness checking device proposed by the present invention, it is desirable to provide a kind of sealing effect is more preferable, can reduce the air tightness checking device of the damage to equipment.The technical scheme is that: bracket is placed in fulcrum bearing pilot hole by third rubber sheet gasket；Tested test specimen is placed in the shaft end stepped hole of bracket by the second rubber sheet gasket；Locking nut (2) is spirally connected fulcrum bearing, compresses first rubber sheet gasket with adjusting nut (1) to seal the air inlet of tested test specimen；Pressing plate (3), which covers on to compress rubber sheet gasket and bracket on tested test specimen, seals tested test specimen, the height of the first rubber sheet gasket is adjusted by adjusting nut and locking nut cooperation to seal the port of tested test specimen, helium spray gun sprays helium by the hole on pressing plate, detect the test specimen whether gas leakage.It is a kind of abnormity air tightness checking device, including adjusting nut, locking nut, pressing plate, bracket, fulcrum bearing and three kinds of specifications rubber sheet gasket.
Description
Technical field
The present invention relates to a kind of special-shaped junction block air tightness checking devices.
Background technique
Being now widely used for all trades and professions such as motor cylinder block, piston, petroleum, coal mine, sebific duct, pressure gauge, air accumulator needs
The place for carrying out gas boosting and air-tight test requires to carry out airtight test.Which kind of in general, no matter filled using
Preparing gas is set, before complexes assembling finishes and is packed into reactant, it is necessary to the air-tightness of check device, with ensure to test
It goes on smoothly.
In the tested test specimen 9 of prior art miniaturization vibration cylinder pressure transducer shown in Fig. 3, junction block and lead 10
The sintered location for enclosing bobbin winder base center stepped profile to 4 is needed to carry out airtight test after sintering, since junction block has a L shape
Hole, so that checking that the air-tightness at sintering becomes complicated.It is currently used to be to sintered junction block airtight test method
Junction block test specimen is bonded by gasket seal with fulcrum bearing, vacuum silicon grease is used, with the end of plasticine sealing L shape through-hole
Mouthful, then hunted leak with helium mass spectrometer leak detector.That gas leakage is easy in leak detection in place of the deficiencies in the prior art, efficiency compared with
It is low, have the danger being extracted into plasticine in equipment, and equipment component is distinctly claimed does not allow vacuum silicon grease.
The present invention is the further development and improvement to the prior art.
Summary of the invention
The purpose of the present invention is can subtract in view of the above-mentioned problems of the prior art, to provide a kind of sealing effect more preferable
The special-shaped junction block air tightness checking device of few damage to equipment.
In order to achieve the above object, the present invention provides a kind of special-shaped junction block air tightness checking devices, including adjust spiral shell
Mother 1, locking nut 2, pressing plate 3, the first rubber sheet gasket 4, the second rubber sheet gasket 5, bracket 6, third rubber sheet gasket 7 and the helium matter that is connected
Compose the fulcrum bearing 8 of the working chamber of leak detector, it is characterised in that: bracket 6 is placed in 8 pilot hole of fulcrum bearing by third rubber sheet gasket 7
It is interior；Tested test specimen 9 is placed in the shaft end stepped hole of bracket 6 by the second rubber sheet gasket 5；Locking nut 2 is spirally connected fulcrum bearing 8, uses
Adjusting nut 1 compresses the first rubber sheet gasket 4 to seal the air inlet of tested test specimen 9；Pressing plate 3 covers on rubber on tested test specimen 9
Gasket 4 and bracket 6, which compress, seals tested test specimen, and the height of the first rubber sheet gasket 4 is adjusted by adjusting nut 1 and the cooperation of locking nut 3
Degree, the port for sealing tested test specimen 9, helium spray gun sprays helium by the hole on pressing plate 3, detect the test specimen whether gas leakage.
The present invention has the following beneficial effects: compared with the prior art
Good airproof performance.The present invention using adjusting nut, pressing plate and gasket seal cooperation by the way of come sealed test piece port, using lock
Tight nut the mode of pressing plate and bracket is pressed with fulcrum bearing threaded connection but also part bottom surface be bonded with workpiece it is closer.
The present invention is connected by fulcrum bearing 8 with the working chamber of helium mass spectrometer leak detector, plays sealing function using rubber sheet gasket,
It is realized by the threaded connection between locking nut 2 and fulcrum bearing 8 come pressing plate 3 and bracket 6 and compresses test specimen.By adjusting 1 He of nut
The cooperation of locking nut 3 can adjust the height of the first rubber sheet gasket 4, and seal the port of tested test specimen well, reach sealing
Purpose.Helium is sprayed by the hole on pressing plate 3 with helium spray gun, whether gas leakage changes on equipment without influence to detect the test specimen
Originally the mode sealed with plasticine or vacuum silicon grease, eliminates the harm of plasticine and vacuum silicon grease to equipment.
The present invention can play good sealing function to the air inlet outside detected position, can avoid the occurrence of because close
Envelope property is bad to cause sintered test specimen to be judged to the underproof situation of air-leakage test.Inspection for other homogenous configuration products
Leakage has reference.
Detailed description of the invention
Fig. 1 is the organigram of the special-shaped junction block air tightness checking device of the present invention.
Fig. 2 is the decomposition diagram of Fig. 1.
Fig. 3 is that the junction block of prior art miniaturization vibration cylinder pressure transducer and the sintered air-tightness position of lead are examined
Look into schematic diagram.
Fig. 4 is the top view of Fig. 3.
In figure: 1 adjusting nut, 2 locking nuts, 3 pressing plates, 4 first rubber sheet gaskets, 5 second rubber sheet gaskets, 6 brackets, 7
Three rubber sheet gaskets, 8 fulcrum bearings, 9 tested test specimens.
Specific embodiment
Refering to Fig. 2, Fig. 3.In the embodiment described below, a kind of special-shaped junction block air tightness checking device, including adjust
It saves nut 1, locking nut 2, pressing plate 3, the first rubber sheet gasket 4, the second rubber sheet gasket 5, bracket 6, third rubber sheet gasket 7 and is connected
The fulcrum bearing 8 of the working chamber of helium mass spectrometer leak detector.Bracket 6 is placed in 8 pilot hole of fulcrum bearing by third rubber sheet gasket 7；It is tested
Test specimen 9 is placed in the shaft end stepped hole of bracket 6 by the second rubber sheet gasket 5；Locking nut 2 is spirally connected fulcrum bearing 8, uses adjusting nut
1 compresses the first rubber sheet gasket 4 to seal the air inlet of tested test specimen 9；Pressing plate 3 covers on rubber sheet gasket 4 and branch on tested test specimen 9
Frame 6, which compresses, seals tested test specimen, and the height of the first rubber sheet gasket 4 is adjusted by adjusting nut 1 and the cooperation of locking nut 3, seal
The port of tested test specimen 9, helium spray gun spray helium by the hole on pressing plate 3, detect the test specimen whether gas leakage.A kind of abnormity gas
Close property check device, including adjusting nut 1, locking nut 2, pressing plate 3, bracket 6, fulcrum bearing 8 and three kind of specification rubber pad
Piece.
Further, come sealed test piece port by the way of the cooperation of adjusting nut, pressing plate 3 and gasket seal, using lock
Tight nut 2 is threadedly coupled to press the mode of pressing plate and bracket but also part bottom surface is bonded with workpiece with fulcrum bearing.
Further, it is realized by the threaded connection between locking nut 2 and fulcrum bearing 8 come pressing plate 3 and bracket 6 and compresses examination
Part.
Further, by adjusting the cooperation of nut 1 and locking nut 3 that can adjust the height of the first rubber sheet gasket 4, seal by
Inspect the port of part.
Fulcrum bearing 8 is mounted on helium mass spectrometer leak detector；Bracket 6 is installed together with third rubber sheet gasket 7 and is placed on
In fulcrum bearing 8；Tested test specimen 9 and the second rubber sheet gasket 5 are installed together and are placed on bracket 6；First rubber sheet gasket 4 is pacified
On pressing plate 3；Pressing plate 3 covers on tested test specimen 9；2 pressing plate 3 of locking nut and bracket 6, are connected through a screw thread with fulcrum bearing 8
It screws together；The first rubber sheet gasket 4 is compressed with adjusting nut 1 to seal the air inlet of tested test specimen 9.Passed through with helium spray gun
Tested position jet from hole on pressing plate 3 to tested test specimen 9, by helium mass spectrometer leak detector determine tested test specimen 9 whether gas leakage.
To detect the sintered part air-tightness of position junction block shown in Fig. 1, the air inlet of junction block is needed to close, by adjusting spiral shell
Mother 1 presses the first rubber sheet gasket 4 to achieve the purpose that seal air inlet.To prevent the other contacts site of product and fixture from leaking air
Problem reaches sealing purpose using the second rubber sheet gasket 5 and third rubber sheet gasket 7.Then, by the hole on pressing plate 3 to quilt
It inspects part 9 and sprays helium, helium can not enter the work of helium mass spectrometer leak detector by the air inlet and other positions for being detected test specimen 9
Chamber, with this come achieve the purpose that check junction block sintered part air-tightness.If helium mass spectrometer leak detector detects gas leakage, wiring is proved
Seat sintered part airtight test is unqualified, conversely, then proving products air tightness qualification.
Claims (6)
1. a kind of abnormity junction block air tightness checking device, including adjusting nut (1), locking nut (2), pressing plate (3), the first rubber
Glue gasket (4), the second rubber sheet gasket (5), bracket (6), third rubber sheet gasket (7) and the working chamber for the helium mass spectrometer leak detector that is connected
Fulcrum bearing (8), it is characterised in that: bracket (6) is placed in fulcrum bearing (8) pilot hole by third rubber sheet gasket (7)；Tested test specimen
(9) it is placed in the shaft end stepped hole of bracket (6) by the second rubber sheet gasket (5)；Locking nut (2) is spirally connected fulcrum bearing (8), with tune
Section nut (1) compresses the first rubber sheet gasket (4) to seal the air inlet of tested test specimen (9)；Pressing plate (3) covers on tested test specimen (9)
On rubber sheet gasket (4) and bracket (6) compressed seal tested test specimen, pass through adjusting nut (1) and locking nut (3) cooperation tune the
The height of one rubber sheet gasket (4), the port for sealing tested test specimen (9), helium spray gun sprays helium by the hole on pressing plate (3)
Gas, detect the test specimen whether gas leakage.
2. a kind of abnormity air tightness checking device, including adjusting nut (1), locking nut (2), pressing plate (3), bracket (6), bearing
The rubber sheet gasket of seat (8) and three kinds of specifications.
3. abnormity junction block air tightness checking device as described in claim 1, which is characterized in that use adjusting nut, pressing plate
(3) and the mode of gasket seal cooperation comes sealed test piece port, is threadedly coupled using locking nut (2) with fulcrum bearing to press pressure
The mode of plate and bracket is but also part bottom surface is bonded with workpiece.
4. abnormity junction block air tightness checking device as described in claim 1, which is characterized in that by locking nut (2) and
Threaded connection between fulcrum bearing (8) carrys out pressing plate (3) and bracket (6) is realized and compresses test specimen.
5. abnormity junction block air tightness checking device as described in claim 1, which is characterized in that by adjusting nut (1) and locking
The cooperation of tight nut (3) can adjust the height of the first rubber sheet gasket (4), seal the port of tested test specimen.
6. abnormity junction block air tightness checking device as described in claim 1, which is characterized in that fulcrum bearing (8) to be mounted on
On helium mass spectrometer leak detector；Bracket (6) and third rubber sheet gasket (7) are installed together and are placed on fulcrum bearing (8)；It will be inspected
Part (9) and the second rubber sheet gasket (5), which are installed together, to be placed on bracket (6)；First rubber sheet gasket (4) is mounted on pressing plate
(3) on；Pressing plate (3) covers on tested test specimen (9)；Locking nut (2) pressing plate (3) and bracket (6) pass through spiral shell with fulcrum bearing (8)
Line, which links together, to be screwed；The first rubber sheet gasket (4) are compressed with adjusting nut (1) to seal the air inlet of tested test specimen (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710593997.XA CN109282949B (en) | 2017-07-20 | 2017-07-20 | Special-shaped wire holder air tightness inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710593997.XA CN109282949B (en) | 2017-07-20 | 2017-07-20 | Special-shaped wire holder air tightness inspection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109282949A true CN109282949A (en) | 2019-01-29 |
| CN109282949B CN109282949B (en) | 2024-01-12 |
Family
ID=65185205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710593997.XA Active CN109282949B (en) | 2017-07-20 | 2017-07-20 | Special-shaped wire holder air tightness inspection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109282949B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146229A (en) * | 2019-06-17 | 2019-08-20 | 蚌埠兴创电子科技有限公司 | A kind of leak detection apparatus of metal and glass sintering |
| CN114323488A (en) * | 2021-12-20 | 2022-04-12 | 上海空间推进研究所 | Air tightness testing device and method for hollow cathode emitter assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203162142U (en) * | 2013-03-21 | 2013-08-28 | 广州市井源机电设备有限公司 | Hole sealing tool for leakage detection |
| CN205879450U (en) * | 2016-07-11 | 2017-01-11 | 合肥凯泉电机电泵有限公司 | Connecting seat work piece air -tight test frock |
| CN207095790U (en) * | 2017-07-20 | 2018-03-13 | 成都凯天电子股份有限公司 | Junction block sintered part air tightness checking device |
-
2017
- 2017-07-20 CN CN201710593997.XA patent/CN109282949B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203162142U (en) * | 2013-03-21 | 2013-08-28 | 广州市井源机电设备有限公司 | Hole sealing tool for leakage detection |
| CN205879450U (en) * | 2016-07-11 | 2017-01-11 | 合肥凯泉电机电泵有限公司 | Connecting seat work piece air -tight test frock |
| CN207095790U (en) * | 2017-07-20 | 2018-03-13 | 成都凯天电子股份有限公司 | Junction block sintered part air tightness checking device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146229A (en) * | 2019-06-17 | 2019-08-20 | 蚌埠兴创电子科技有限公司 | A kind of leak detection apparatus of metal and glass sintering |
| CN114323488A (en) * | 2021-12-20 | 2022-04-12 | 上海空间推进研究所 | Air tightness testing device and method for hollow cathode emitter assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109282949B (en) | 2024-01-12 |
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