CN202305118U - Capillary tube fixing leak - Google Patents
Capillary tube fixing leak Download PDFInfo
- Publication number
- CN202305118U CN202305118U CN 201120399692 CN201120399692U CN202305118U CN 202305118 U CN202305118 U CN 202305118U CN 201120399692 CN201120399692 CN 201120399692 CN 201120399692 U CN201120399692 U CN 201120399692U CN 202305118 U CN202305118 U CN 202305118U
- Authority
- CN
- China
- Prior art keywords
- capillary tube
- adapter sleeve
- connecting sleeve
- kapillary
- hole
- 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 - Lifetime
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Abstract
The utility model discloses a capillary tube fixing leak, which comprises a capillary tube and a capillary tube seat and is characterized in that a through hole is disposed on the capillary tube seat. The capillary tube penetrates through the through hole on the capillary tube seat, a taper washer and a gland nut, and the taper washer and the gland nut are arranged at both ends of the capillary tube seat and used for fixing the capillary tube. A first connecting sleeve and a second connecting sleeve are respectively sleeved on the capillary tube seat from both ends of the capillary tube. A plurality of seal rings are used for sealing among the first connecting sleeve, the second connecting sleeve and the capillary tube seat. A filter disc is respectively embedded in the first connecting sleeve and the second connecting sleeve and fixed through a plug screw provided with a through hole. The capillary tube fixing leak is simple in structure, low in cost due to the fact that adopted materials are all conventional materials, strong in applicability and suitable for being used as standard leak parts in various positive-pressure or negative-pressure air tightness tests and mass spectrum leak detection.
Description
Technical field
The utility model relates generally to impermeability and detects and the mass spectrophotometry field, specifically is fixedly small opening of a kind of kapillary, is used for malleation and detects or detection of negative pressure.
Background technology
Common in the market sealing test instrument can be divided into positive pressure tester and negative pressure tester; Also there is not a kind of tester not only can be used for the malleation detection but also can be used for detection of negative pressure; In order to reduce production cost, to enhance productivity; Need a kind of device simple in structure, that cost is low to be used for various malleations or the detection of negative pressure impermeability at present, also can in mass spectrum leak detection, use as the standard missing part.
The utility model content
The utility model technical matters to be solved provide a kind of be adapted at various malleations or negative pressure impermeability detect with mass spectrum leak detection in the device that uses as the standard missing part.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is:
Kapillary is small opening fixedly; Include kapillary, capillary seat; It is characterized in that: have through hole on the said capillary seat, through hole and capillary seat two ends that described kapillary passes on the capillary seat are used for fixing taper washer capillaceous, gland nut, perforate in the middle of first adapter sleeve and second adapter sleeve; First adapter sleeve and second adapter sleeve are sleeved on the capillary seat from two ends capillaceous respectively; Seal with a plurality of O-ring seals between described first adapter sleeve, second adapter sleeve and the capillary seat, embed a filter in the perforate of described first adapter sleeve, second adapter sleeve respectively, said filter is fixed with the plug screw that has through hole.
Described kapillary is small opening fixedly, it is characterized in that: the filtering accuracy of said filter is 5um to 50um.
Described kapillary is small opening fixedly, it is characterized in that: said internal diameter capillaceous is 10um to 200um, and material is quartz or stainless steel.
According to the pressure differential of air intake opening and gas outlet, the gas flow capillaceous through fixed inner diameter and length in small opening is fixed.Because quartzy very little with stainless expansion coefficient, so be constant at the state of certain pressure scope and temperature range inner capillary tube, promptly the flow of small opening is stable, during coincidence detection to the requirement of referance leak.
The utility model has the advantages that: the utility model is simple in structure, and material therefor is a conventional material, and cost is low, and applicability is strong, is adapted at using as the standard missing part in detection of various malleations or negative pressure impermeability and the mass spectrum leak detection.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
As shown in Figure 1; Kapillary is small opening fixedly, includes kapillary 4, capillary seat 7, has through hole on the said capillary seat 7; Described kapillary 4 passes taper washer 6, the gland nut 5 that through hole and capillary seat 7 two ends on the capillary seat 7 are used for fixing kapillary 4; Perforates in the middle of first adapter sleeve 1 and second adapter sleeve 8, the two ends from kapillary 4 are sleeved on the capillary seat 7 respectively, seal with 4 O-ring seals 9 between described first adapter sleeve 1, second adapter sleeve 8 and the capillary seat 7; Embed a filter 3 respectively in the perforate of described first adapter sleeve 1, second adapter sleeve 8, it is fixing that said filter 3 usefulness have the plug screw 2 of through hole.
The filtering accuracy of said filter 3 is 5um to 50um.The internal diameter of said kapillary 4 is 10um to 200um, and material is quartz or stainless steel.According to the pressure differential of air intake opening and gas outlet, the gas flow of the kapillary 4 through fixed inner diameter and length in small opening is fixed.Because quartzy very little with stainless expansion coefficient, so be constant at the state of certain pressure scope and temperature range inner capillary tube 4, promptly the flow of small opening is stable, during coincidence detection to the requirement of referance leak.
Claims (3)
1. the fixing small opening of a kapillary; Include kapillary, capillary seat; It is characterized in that: have through hole on the said capillary seat; Through hole and capillary seat two ends that described kapillary passes on the capillary seat are used for fixing taper washer capillaceous, gland nut; Perforate in the middle of first adapter sleeve and second adapter sleeve, first adapter sleeve and second adapter sleeve are sleeved on the capillary seat from two ends capillaceous respectively, seal with a plurality of O-ring seals between described first adapter sleeve, second adapter sleeve and the capillary seat; Embed a filter in the perforate of described first adapter sleeve, second adapter sleeve respectively, said filter is fixed with the plug screw that has through hole.
2. kapillary according to claim 1 is small opening fixedly, it is characterized in that: the filtering accuracy of said filter is 5um to 50um.
3. kapillary according to claim 1 is small opening fixedly, it is characterized in that: said internal diameter capillaceous is 10um to 200um, and material is quartz or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120399692 CN202305118U (en) | 2011-10-20 | 2011-10-20 | Capillary tube fixing leak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120399692 CN202305118U (en) | 2011-10-20 | 2011-10-20 | Capillary tube fixing leak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305118U true CN202305118U (en) | 2012-07-04 |
Family
ID=46373991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120399692 Expired - Lifetime CN202305118U (en) | 2011-10-20 | 2011-10-20 | Capillary tube fixing leak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305118U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956016A (en) * | 2018-08-31 | 2018-12-07 | 天津博益气动股份有限公司 | A kind of small-sized leak hole device |
| CN113405729A (en) * | 2021-07-09 | 2021-09-17 | 安徽中科智能高技术有限责任公司 | Leakage-amount-adjustable leak hole based on laminar flow principle |
| CN115308324A (en) * | 2022-07-28 | 2022-11-08 | 天津国科医工科技发展有限公司 | Transmission line and device for combined use of gas chromatograph and mass spectrometer, temperature control transmission line and method |
-
2011
- 2011-10-20 CN CN 201120399692 patent/CN202305118U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956016A (en) * | 2018-08-31 | 2018-12-07 | 天津博益气动股份有限公司 | A kind of small-sized leak hole device |
| CN113405729A (en) * | 2021-07-09 | 2021-09-17 | 安徽中科智能高技术有限责任公司 | Leakage-amount-adjustable leak hole based on laminar flow principle |
| CN115308324A (en) * | 2022-07-28 | 2022-11-08 | 天津国科医工科技发展有限公司 | Transmission line and device for combined use of gas chromatograph and mass spectrometer, temperature control transmission line and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |