CN204087821U - Square tube weld seam helium air-leakage test vacuum frock - Google Patents
Square tube weld seam helium air-leakage test vacuum frock Download PDFInfo
- Publication number
- CN204087821U CN204087821U CN201420485543.2U CN201420485543U CN204087821U CN 204087821 U CN204087821 U CN 204087821U CN 201420485543 U CN201420485543 U CN 201420485543U CN 204087821 U CN204087821 U CN 204087821U
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- China
- Prior art keywords
- vacuum
- tight
- housing
- square tube
- seal
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a kind of square tube weld seam helium air-leakage test vacuum frock, include the vacuum (-tight) housing be sleeved on outside square tube, the two ends of vacuum (-tight) housing have been welded to connect joint flange respectively, the two ends end face of vacuum (-tight) housing is respectively arranged with conical surface seal groove, in conical surface seal groove, has the O-ring seal be equipped with; The joint flange at described vacuum (-tight) housing two ends is installed respectively by fastening bolt and is connected with blind flange, step seal joint is provided with between blind flange and vacuum (-tight) housing, one end crush seal circle vertically of step seal joint, the other end of step seal joint extend in blind flange center pit; On described vacuum (-tight) housing, centre position is provided with leak locator connector.The utility model structure is simple, and mounting or dismounting are convenient, and good seal performance, meets the vacuum requirement of the helium air-leakage test of square tube weld seam, achieve integrated testability.
Description
Technical field
The utility model relates to helium impermeability detection technique field, mainly a kind of square tube weld seam helium air-leakage test vacuum frock.
Background technology
Poloidal field (PF) coil of International Thermal-Nuclear Experimental Reactor (ITER) is about the jam welding of 10 meters of 316L stainless steel conductors by length to form, and this kind of steel pipe is square-outside and round-inside structure.Because PF coil works in high vacuum conditions, it is necessary that the vacuum-tightness of coil detects.According to air-leakage test technical manual, helium mass spectrum malleation-vacuum-tightness method is adopted to carry out air-leakage test to conductor weld seam.Existing air-leakage test vacuum frock is general only for pipe, or adopts half structure, and its sealing property is unstable.
utility model contenttechnical problem to be solved in the utility model is to provide a kind of square tube weld seam helium air-leakage test vacuum frock, and its structure is simple, and mounting or dismounting are convenient, and good seal performance, meets the vacuum requirement of the helium air-leakage test of square tube weld seam, achieve integrated testability.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of square tube weld seam helium air-leakage test vacuum frock, it is characterized in that, include the vacuum (-tight) housing be sleeved on outside square tube, the two ends of vacuum (-tight) housing have been welded to connect joint flange respectively, the two ends end face of described vacuum (-tight) housing is respectively arranged with conical surface seal groove, in conical surface seal groove, has the O-ring seal be equipped with; The joint flange at described vacuum (-tight) housing two ends is installed respectively by fastening bolt and is connected with blind flange, step seal joint is provided with between blind flange and vacuum (-tight) housing, one end crush seal circle vertically of step seal joint, the other end of step seal joint extend in blind flange center pit; On described vacuum (-tight) housing, centre position is provided with leak locator connector.
Described O-ring seal is cross section is round outside but spuare inside structure.
Clearance fit between described step seal joint and lid flange.
In the utility model, step seal joint crush seal circle vertically, makes the sealing surface close contact of O-ring seal and vacuum (-tight) housing and square tube.
The utility model has the advantages that:
The utility model structure is simple, and mounting or dismounting are convenient, and meet the vacuum requirement of the helium air-leakage test of square tube weld seam, detection system vacuum tightness can reach 9.0E-4mbar, and system minimum detectable leak rate is the maximum sensitivity 5.0E-12mbar.l/s of helium mass spectrometer leak detector.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of O-ring seal in the utility model.
Fig. 3 is the structural representation of seal joint in the utility model.
Embodiment
See Fig. 1,2,3, a kind of square tube weld seam helium air-leakage test vacuum frock, include the vacuum (-tight) housing 1 be sleeved on outside square tube, the two ends of vacuum (-tight) housing 1 have been welded to connect joint flange 2 respectively, the two ends end face of described vacuum (-tight) housing 1 is respectively arranged with conical surface seal groove, in conical surface seal groove, has the O-ring seal 4 be equipped with; The joint flange 2 at described vacuum (-tight) housing two ends is installed respectively by fastening bolt 6 and is connected with blind flange 3, step seal joint 5 is provided with between blind flange 3 and vacuum (-tight) housing 1, one end crush seal circle 4 vertically of step seal joint 5, the other end of step seal joint 5 extend in blind flange 3 center pit; On described vacuum (-tight) housing 1, centre position is provided with leak locator connector 7.
Described O-ring seal 4 is cross sections is round outside but spuare inside structure.
Clearance fit between described step seal joint 5 and lid flange.
Claims (3)
1. a square tube weld seam helium air-leakage test vacuum frock, it is characterized in that, include the vacuum (-tight) housing be sleeved on outside square tube, the two ends of vacuum (-tight) housing have been welded to connect joint flange respectively, the two ends end face of described vacuum (-tight) housing is respectively arranged with conical surface seal groove, in conical surface seal groove, has the O-ring seal be equipped with; The joint flange at described vacuum (-tight) housing two ends is installed respectively by fastening bolt and is connected with blind flange, step seal joint is provided with between blind flange and vacuum (-tight) housing, one end crush seal circle vertically of step seal joint, the other end of step seal joint extend in blind flange center pit; On described vacuum (-tight) housing, centre position is provided with leak locator connector.
2. a kind of square tube weld seam helium air-leakage test vacuum frock according to claim 1, is characterized in that: described O-ring seal is cross section is round outside but spuare inside structure.
3. a kind of square tube weld seam helium air-leakage test vacuum frock according to claim 1, is characterized in that: be clearance fit between described step seal joint and lid flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485543.2U CN204087821U (en) | 2014-08-26 | 2014-08-26 | Square tube weld seam helium air-leakage test vacuum frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485543.2U CN204087821U (en) | 2014-08-26 | 2014-08-26 | Square tube weld seam helium air-leakage test vacuum frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204087821U true CN204087821U (en) | 2015-01-07 |
Family
ID=52180503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420485543.2U Expired - Fee Related CN204087821U (en) | 2014-08-26 | 2014-08-26 | Square tube weld seam helium air-leakage test vacuum frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204087821U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107962161A (en) * | 2017-11-16 | 2018-04-27 | 唐山春潮汽车零部件股份有限公司 | A kind of smoke gas collecting apparatus and its die casting machine system |
| CN109506845A (en) * | 2018-12-12 | 2019-03-22 | 上海卫星装备研究所 | Test device and test method for the leak detection of pipeline weld seam |
| CN114279643A (en) * | 2021-12-27 | 2022-04-05 | 中船澄西扬州船舶有限公司 | Circular tube flange fillet weld tightness detection device |
| WO2023116624A1 (en) * | 2021-12-20 | 2023-06-29 | 维爱吉(厦门)科技有限责任公司 | Device and method for measuring leak rate of weld seam of vacuum glass |
-
2014
- 2014-08-26 CN CN201420485543.2U patent/CN204087821U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107962161A (en) * | 2017-11-16 | 2018-04-27 | 唐山春潮汽车零部件股份有限公司 | A kind of smoke gas collecting apparatus and its die casting machine system |
| CN109506845A (en) * | 2018-12-12 | 2019-03-22 | 上海卫星装备研究所 | Test device and test method for the leak detection of pipeline weld seam |
| WO2023116624A1 (en) * | 2021-12-20 | 2023-06-29 | 维爱吉(厦门)科技有限责任公司 | Device and method for measuring leak rate of weld seam of vacuum glass |
| CN114279643A (en) * | 2021-12-27 | 2022-04-05 | 中船澄西扬州船舶有限公司 | Circular tube flange fillet weld tightness detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150826 |
|
| EXPY | Termination of patent right or utility model |