CN201247127Y - Inner cavity leakage-trial screw thread sealing device - Google Patents
Inner cavity leakage-trial screw thread sealing device Download PDFInfo
- Publication number
- CN201247127Y CN201247127Y CNU2008201042849U CN200820104284U CN201247127Y CN 201247127 Y CN201247127 Y CN 201247127Y CN U2008201042849 U CNU2008201042849 U CN U2008201042849U CN 200820104284 U CN200820104284 U CN 200820104284U CN 201247127 Y CN201247127 Y CN 201247127Y
- Authority
- CN
- China
- Prior art keywords
- packing
- bolt
- screw thread
- sealing
- leak test
- 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
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Abstract
The utility model relates to the screw-thread sealing technique, which comprises sealed grooves and a packing ring. A ring of sealed grooves are designed close to a screw bolt on a combining position between the bottom of the screw bolt and the sealing surface, the width of the grooves is same with the diameter of a round cushion ring, the height is smaller than the diameter of the cushion ring and is slightly bigger than the radius of the cushion ring, and screwing of the screw bolt is utilized to deform the cushion ring, thereby achieving the sealing effect.
Description
Technical field
The utility model relates to thread seal technology in the mechanical field inner chamber leak test, is specially adapted to the sealing of single screw thread in the inner chamber leak test, as the inner chamber leak test thread seal device of the sealing of single screw thread in the engine cylinder intracoelomic cavity leak test.
Technical background
At present, the encapsulating method of screw thread double thread is adopted in the sealing of the especially single taper-thread of single screw thread usually in the cylinder parts inner chamber leak test, because there are clearance issues in screw thread mismachining tolerance and threaded engagement, the encapsulating method of screw thread double thread is difficult to reach the purpose of sealing, in order to make single thread seal simple and feasible in the cylinder parts inner chamber leak test and to improve the reliability of sealing, invent this technology, the encapsulating method that this technology adopts the screw thread bottom to combine with end face, use the circular seal packing ring in the junction, utilization tights a bolt, thereby the crush seal packing ring reaches the purpose of sealing.
Summary of the invention
The purpose of this utility model is to provide a kind of difficult problem that can solve single thread seal in the cylinder parts inner chamber leak test, the present utility model a kind of method of butt-end packing screw thread, seal with packing washer in the bolt bottom, utilization tights a bolt, the crush seal packing ring, the difficult problem of solution thread seal.Be applicable to the sealing of all kinds of screw threads, inner chamber leak test thread seal device simple in structure, easy to manufacture, easy to use.
The technical solution used in the present invention is: the position that combines with sealing surfaces in the bolt bottom, applying bolt design one circle sealed groove, the width of groove is identical with the diameter of rounded washers, height is less than the packing ring diameter, be slightly larger than the packing ring radius, utilize tightening of bolt to make gasket deforms, thereby reach the effect of sealing.Facts have proved and adopt this encapsulating method ratio method in the past can better reach seal request, can bear bigger leak test air pressure.Comprise stubborn bar, bar handle, packing washer, bolt, sleeve, feature is that sleeve and bolt connecting portion are equipped with packing washer.
Socket port has groove.The packing washer groove of packing into, the bolt packing washer internal diameter of packing into.Compared with prior art, the beneficial effects of the utility model are: can effectively solve the sealing problem of place, dewatering orifice taper-thread in the leak test, can also be used for the sealing of other screw threads simultaneously.
Description of drawings
It is such that structure of the present utility model constitutes
Fig. 1 is that one-piece construction of the present utility model is installed the assembling synoptic diagram.
Fig. 2 is a sleeve part sectional plan view of the present utility model.
Fig. 3 is a sleeve part vertical view of the present utility model.
In the accompanying drawing, twist bar (1), bar handle (2), sleeve (3), packing washer (4), bolt (5), groove (6), screw thread (7).
Embodiment
Most preferred embodiment of the present utility model is such, the position that combines with sealing surfaces in the bolt bottom, applying bolt design one circle sealed groove, the width of groove is identical with the diameter of rounded washers, height is less than the packing ring diameter, be slightly larger than the packing ring radius, utilize tightening of bolt to make gasket deforms, thereby reach the effect of sealing.Open a groove (6) at the port internal diameter of sleeve (3), groove (6) manufactures with packing washer (4), groove (6) external diameter φ is identical with packing washer (4) external diameter φ, and groove (6) aspect ratio packing washer (4) is lower slightly, and sleeve (3) external diameter is bigger than packing washer (4) external diameter.Socket port has groove, the bolt packing washer endoporus of packing into.
Claims (3)
1. an inner chamber leak test thread seal device comprises stubborn bar, bar handle, packing washer, bolt, sleeve, it is characterized in that sleeve (3) and bolt (5) connecting portion are equipped with packing washer (4).
2. inner chamber leak test thread seal device according to claim 1 is characterized in that sleeve (3) port has groove (6).
3. inner chamber leak test thread seal device according to claim 1 is characterized in that packing washer (4) groove (6) of packing into, bolt (5) packing washer (4) internal diameter of packing into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201042849U CN201247127Y (en) | 2008-06-06 | 2008-06-06 | Inner cavity leakage-trial screw thread sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201042849U CN201247127Y (en) | 2008-06-06 | 2008-06-06 | Inner cavity leakage-trial screw thread sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201247127Y true CN201247127Y (en) | 2009-05-27 |
Family
ID=40730948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201042849U Expired - Fee Related CN201247127Y (en) | 2008-06-06 | 2008-06-06 | Inner cavity leakage-trial screw thread sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201247127Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486457A (en) * | 2015-12-31 | 2016-04-13 | 天津维克沃德科技有限公司 | Airtightness test inner tensioning sealing device |
-
2008
- 2008-06-06 CN CNU2008201042849U patent/CN201247127Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486457A (en) * | 2015-12-31 | 2016-04-13 | 天津维克沃德科技有限公司 | Airtightness test inner tensioning sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20130606 |