CN109282949B - Special-shaped wire holder air tightness inspection device - Google Patents
Special-shaped wire holder air tightness inspection device Download PDFInfo
- Publication number
- CN109282949B CN109282949B CN201710593997.XA CN201710593997A CN109282949B CN 109282949 B CN109282949 B CN 109282949B CN 201710593997 A CN201710593997 A CN 201710593997A CN 109282949 B CN109282949 B CN 109282949B
- Authority
- CN
- China
- Prior art keywords
- rubber gasket
- test piece
- bracket
- supporting seat
- adjusting nut
- 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.)
- Active
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 12
- 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 15
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims abstract description 6
- 206010066054 Dysmorphism Diseases 0.000 claims 1
- 238000001819 mass spectrum Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 5
- 239000004519 grease Substances 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method 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
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000376 reactant Substances 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
The invention provides a special-shaped wire holder air tightness checking device, and aims to provide an air tightness checking device which is better in sealing effect and capable of reducing damage to equipment. The invention is realized by the following technical scheme: the bracket is arranged in the supporting seat assembly hole through a third rubber gasket; the tested test piece is arranged in the shaft end step hole of the bracket through the second rubber gasket; the locking nut (2) is in threaded connection with the supporting seat, and the first rubber gasket is tightly pressed by the adjusting nut (1) to seal the air inlet of the tested sample; the clamp plate (3) covers and compresses tightly rubber gasket and support and seals the test piece of examining on the test piece, seals the port of test piece through adjusting nut and lock nut cooperation adjustment first rubber gasket's height, and helium spray gun spouts helium through the hole on the clamp plate, detects whether this test piece leaks gas. A special-shaped air tightness inspection device comprises an adjusting nut, a locking nut, a pressing plate, a bracket, a supporting seat and rubber gaskets with three specifications.
Description
Technical Field
The invention relates to an air tightness inspection device for a special-shaped wire holder.
Background
The method is widely applied to various industries such as automobile cylinders, pistons, petroleum, coal mines, rubber pipes, pressure gauges, gas storage tanks and the like, and the places needing gas pressurization and gas tightness tests need to be subjected to gas tightness inspection. Generally, whichever device is used to produce the gas, the device must be checked for tightness before the complete set of devices is completely filled with reactants to ensure that the experiment is performed successfully.
In the test piece 9 of the miniaturized vibration tube pressure sensor of the prior art shown in fig. 3, after the wire holder and the lead wire 10 are sintered, the air tightness of 4 sintering positions distributed around the central step of the wire holder is required to be checked, and the air tightness of the sintered position is complicated because the wire holder is provided with an L-shaped hole. The current adopted method for checking the tightness of the sintered wire holder is to attach a wire holder test piece to a supporting seat through a sealing gasket, use vacuum silicone grease, seal the port of an L-shaped through hole by using plasticine, and then use a helium mass spectrometer leak detector for leak detection. The prior art has the defects that the leakage is easy to occur during leakage detection, the efficiency is low, the plasticine is pumped into the equipment, and the vacuum silicone grease is not allowed for some equipment.
The present invention is a further development and improvement over the prior art.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides the special-shaped wire holder air tightness checking device which has better sealing effect and can reduce damage to equipment.
In order to achieve the above purpose, the invention provides a special-shaped wire holder air tightness inspection device, comprising an adjusting nut 1, a locking nut 2, a pressing plate 3, a first rubber gasket 4, a second rubber gasket 5, a bracket 6, a third rubber gasket 7 and a supporting seat 8 connected with a working cavity of a helium mass spectrometer leak detector, which is characterized in that: the bracket 6 is arranged in an assembly hole of the supporting seat 8 through a third rubber gasket 7; the tested piece 9 is arranged in the shaft end step hole of the bracket 6 through the second rubber gasket 5; the locking nut 2 is in threaded connection with the supporting seat 8, and the first rubber gasket 4 is tightly pressed by the adjusting nut 1 to seal the air inlet of the tested piece 9; the clamp plate 3 covers and compresses tightly rubber gasket 4 and support 6 on examining test piece 9 and seals the test piece, and the port of examining test piece 9 is sealed to the height of adjusting first rubber gasket 4 through adjusting nut 1 and lock nut 3 cooperation, and the helium spray gun spouts helium through the hole on clamp plate 3, detects whether this test piece leaks gas.
Compared with the prior art, the invention has the following beneficial effects:
the sealing performance is good. According to the invention, the port of the test piece is sealed in a mode of matching the adjusting nut, the pressing plate and the sealing gasket, and the bottom surface of the part is tightly attached to the workpiece in a mode of pressing the pressing plate and the bracket by connecting the locking nut with the supporting seat in a threaded manner.
The invention is connected with the working cavity of the helium mass spectrometer leak detector through the supporting seat 8, a rubber gasket is adopted to play a sealing role, and the test piece is compressed by the pressing plate 3 and the bracket 6 through the threaded connection between the locking nut 2 and the supporting seat 8. The height of the first rubber gasket 4 can be adjusted through the matching of the adjusting nut 1 and the locking nut 3, and the port of the tested piece is well sealed, so that the sealing purpose is achieved. Helium is sprayed through holes in the pressing plate 3 by using a helium spray gun to detect whether the test piece leaks, so that the device is not affected, the original sealing mode by using plasticine or vacuum silicone grease is changed, and the damage of the plasticine and the vacuum silicone grease to the device is removed.
The invention can play a good sealing role on the air inlet outside the detected position, and can avoid the condition that the sintered test piece is judged to be unqualified in air tightness detection because of poor sealing property. The leakage detection method has reference significance for leakage detection of other products with the same structure.
Drawings
Fig. 1 is a schematic diagram of the structure of the air tightness inspection device for the special-shaped wire holder.
Fig. 2 is an exploded schematic view of fig. 1.
Fig. 3 is a schematic diagram of the airtight position inspection after sintering of the wire holder and the lead wire of the miniaturized vibrating cylinder pressure sensor of the prior art.
Fig. 4 is a top view of fig. 3.
In the figure: the test piece comprises an adjusting nut 1, a locking nut 2, a pressing plate 3, a first rubber gasket 4, a second rubber gasket 5, a bracket 6, a third rubber gasket 7, a supporting seat 8 and a tested test piece 9.
Detailed Description
See fig. 2 and 3. In the embodiment described below, a special-shaped wire holder air tightness inspection device comprises an adjusting nut 1, a locking nut 2, a pressing plate 3, a first rubber gasket 4, a second rubber gasket 5, a bracket 6, a third rubber gasket 7 and a supporting seat 8 connected with a working cavity of a helium mass spectrometer leak detector. The bracket 6 is arranged in an assembly hole of the supporting seat 8 through a third rubber gasket 7; the tested piece 9 is arranged in the shaft end step hole of the bracket 6 through the second rubber gasket 5; the locking nut 2 is in threaded connection with the supporting seat 8, and the first rubber gasket 4 is tightly pressed by the adjusting nut 1 to seal the air inlet of the tested piece 9; the clamp plate 3 covers and compresses tightly rubber gasket 4 and support 6 on examining test piece 9 and seals the test piece, and the port of examining test piece 9 is sealed to the height of adjusting first rubber gasket 4 through adjusting nut 1 and lock nut 3 cooperation, and the helium spray gun spouts helium through the hole on clamp plate 3, detects whether this test piece leaks gas. A special-shaped air tightness checking device comprises an adjusting nut 1, a locking nut 2, a pressing plate 3, a bracket 6, a supporting seat 8 and rubber gaskets with three specifications.
Furthermore, the port of the test piece is sealed by adopting a mode of matching the adjusting nut, the pressing plate 3 and the sealing gasket, and the bottom surface of the part is attached to the workpiece by adopting a mode of pressing the pressing plate and the bracket by adopting the threaded connection of the locking nut 2 and the supporting seat.
Further, the compression of the test piece is achieved by the compression plate 3 and the bracket 6 through the threaded connection between the lock nut 2 and the support seat 8.
Further, the height of the first rubber gasket 4 can be adjusted through the matching of the adjusting nut 1 and the locking nut 3, and the port of the tested piece is sealed.
Mounting the support 8 on a helium mass spectrometer leak detector; the bracket 6 and the third rubber gasket 7 are arranged together and then are arranged on the supporting seat 8; the tested piece 9 and the second rubber gasket 5 are arranged together and then placed on the bracket 6; mounting a first rubber gasket 4 on the pressing plate 3; the pressing plate 3 covers the tested piece 9; the pressing plate 3 and the bracket 6 of the lock nut 2 are connected with the supporting seat 8 through threads and screwed; the first rubber gasket 4 is pressed by the adjusting nut 1 to seal the air inlet of the test piece 9. The gas is injected to the detected part of the detected test piece 9 through the hole on the pressing plate 3 by using a helium spray gun, and whether the detected test piece 9 leaks gas is judged by a helium mass spectrometer leak detector.
In order to detect the tightness of the sintered part of the wire holder at the position shown in fig. 1, the air inlet of the wire holder needs to be closed, and the purpose of sealing the air inlet is achieved by pressing the first rubber gasket 4 through the adjusting nut 1. In order to prevent the air leakage problem of other contact parts of the product and the clamp, the second rubber gasket 5 and the third rubber gasket 7 are adopted to achieve the sealing purpose. Then, helium is sprayed to the tested piece 9 through the hole on the pressing plate 3, and the helium cannot enter the working cavity of the helium mass spectrometer leak detector through the air inlet and other parts of the tested piece 9, so that the purpose of checking the tightness of the wire holder sintered piece is achieved. If the helium mass spectrometer leak detector detects the gas leakage, the gas tightness of the wire holder sintered part is proved to be unqualified, otherwise, the gas tightness of the product is proved to be qualified.
Claims (5)
1. The utility model provides a dysmorphism connection terminal gas tightness inspection device, includes adjusting nut (1), lock nut (2), clamp plate (3), first rubber gasket (4), second rubber gasket (5), support (6), third rubber gasket (7) and support (8) of the working chamber of continuous helium mass spectrum leak detector, its characterized in that: the bracket (6) is arranged in an assembly hole of the supporting seat (8) through a third rubber gasket (7); the tested piece (9) is arranged in the shaft end step hole of the bracket (6) through the second rubber gasket (5); the locking nut (2) is in threaded connection with the supporting seat (8), and the adjusting nut (1) is used for pressing the first rubber gasket (4) to seal the air inlet of the tested piece (9); the clamp plate (3) cover is pressed tightly rubber gasket (4) and support (6) and is sealed by examining the test piece (9), and the height of first rubber gasket (4) is adjusted through adjusting nut (1) and lock nut (2) cooperation, seals the port of examining test piece (9), and helium spray gun spouts helium through the hole on clamp plate (3), detects whether this test piece leaks gas.
2. The special-shaped wiring seat air tightness checking device according to claim 1, wherein the port of the test piece is sealed by adopting a mode of matching an adjusting nut, a pressing plate (3) and a sealing gasket, and the bottom surface of the part is attached to the workpiece by adopting a mode of pressing the pressing plate and the bracket by adopting the threaded connection of the locking nut (2) and the supporting seat.
3. The special-shaped wire holder air tightness checking device according to claim 1, wherein the test piece is pressed by the pressing plate (3) and the bracket (6) through the threaded connection between the locking nut (2) and the supporting seat (8).
4. The special-shaped wire holder air tightness inspection device according to claim 1, wherein the height of the first rubber gasket (4) is adjusted through the matching of the adjusting nut (1) and the locking nut (2), so as to seal the port of the inspected test piece.
5. The special-shaped wire holder air tightness inspection device according to claim 1, characterized in that the support (8) is mounted on a helium mass spectrometer leak detector; the bracket (6) and the third rubber gasket (7) are arranged together and then are arranged on the supporting seat (8); the tested piece (9) and the second rubber gasket (5) are arranged together and then are arranged on the bracket (6); the first rubber gasket (4) is arranged on the pressing plate (3); the pressing plate (3) covers the tested piece (9); the locking nut (2) is connected with the pressing plate (3) and the bracket (6) through threads and screwed with the supporting seat (8); the first rubber gasket (4) is tightly pressed by the adjusting nut (1) to seal the air inlet of the tested piece (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 CN109282949A (en) | 2019-01-29 |
| CN109282949B true CN109282949B (en) | 2024-01-12 |
Family
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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 |
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| Country | Link |
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| CN (1) | CN109282949B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146229B (en) * | 2019-06-17 | 2020-12-08 | 蚌埠兴创电子科技有限公司 | Leakage detection device for sintering metal and glass |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109282949A (en) | 2019-01-29 |
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