CN2273799Y - Flexible connection structure for metallic tube - Google Patents
Flexible connection structure for metallic tube Download PDFInfo
- Publication number
- CN2273799Y CN2273799Y CN 96238245 CN96238245U CN2273799Y CN 2273799 Y CN2273799 Y CN 2273799Y CN 96238245 CN96238245 CN 96238245 CN 96238245 U CN96238245 U CN 96238245U CN 2273799 Y CN2273799 Y CN 2273799Y
- Authority
- CN
- China
- Prior art keywords
- pipe fitting
- utility
- model
- pipe
- pipeline
- 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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- Joints Allowing Movement (AREA)
Abstract
The utility model relates to a flexible connecting structure for metal pipes, which comprises a metal straight pipe and a connecting pipe fitting. The utility model is characterized in that a conical surface is opened on the inner wall of the end part of the connecting pipe fitting, the position of the conical surface between the metal straight pipe and the connecting pipe fitting is sheathed with a trapezoidal rubber ring and a plastic pressing ring, and screw threads of the outer side of the end part of the connecting pipe are connected with a locking press cover. In the utility model, because the sleeve-pipe-typed trapezoidal rubber ring is adopted for sealing to form the flexible connecting structure, the problem that pipe heads are firstly corroded after a pipeline is paved can be avoided, and the defect that after the pipeline is exerted by an external force, the problems that the pipeline is ruptured, and pipe ends are broken off and pulled out are easy to cause is overcome; the utility model also has the advantages of reasonable structure, convenient installation, long service life, wide scope of application, etc.
Description
The utility model relates to the linkage structure of metal tubes, the flexible connecting structure of the metal tube that specifically a kind of employing is flexible coupling.
At present, the pipeline of enterprise or engineering auxilliary establish with installation process in, between metal tubes, in the connection procedure by links such as elbow, pipe collar, threeway, loose joints, all be to adopt to belong to the hard connection that a head thread connects promptly.This hard linkage structure is through existing a lot of unfavorable factors in long-term installation and the use practice, and 1. various links need first mantle fiber, therefore are easy to cause corrosion, thereby reduce its working life; 2. after pipeline is subjected to extraneous pressure (particularly auxilliary be located at underground pipeline), owing to be rigid connection, cause the fractureing and extracting of fracture, silk head of pipeline easily; 3. can't eliminate the stress of self, and fitting operation complexity, cost height.
The purpose of this utility model provides a kind of flexible connecting structure of the metal tube that is flexible coupling.
The purpose of this utility model is achieved in that a kind of flexible connecting structure of metal tube, it comprises metal straight pipe, connection pipe fitting, it is characterized in that on the inwall of connection pipe fitting end, having one section conical surface, conical surface place between metal straight pipe and connection pipe fitting is set with a trapezoidal cushion rubber and plastics trim ring respectively, and the outside screw in the connection pipe fitting end is connected with a locking gland.During installation, as long as with an end of metal straight pipe successively trapezoidal cushion rubber of suit and plastics trim ring, together insert then in the connection pipe fitting, the locking gland of rotation and connection pipe fitting outside screw again is till locking.Above-mentioned connection pipe fitting is meant elbow, pipe collar, threeway, loose joint.
The utility model owing to do not adopt as: the hard linkage structure that is threaded adopts the flexible connecting structure of the trapezoidal O-ring seal lock sealing of bushing type, therefore has following luminous point: need not first mantle fiber, therefore avoid the particularly auxilliary back silk head problem of corrosion earlier of establishing of exterior tubing, improved the bulk life time of pipeline; After having overcome pipeline and being subjected to extraneous pressure, cause the fractureing and extract problem of fracture, silk head of pipeline easily, also overcome the stress of pipeline self simultaneously; Rational in infrastructure, characteristics such as fitting operation convenient, cost is low, applied range that the utility model also has.
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the view of linkage structure of the present utility model
By shown in Figure 1,1 is that the metal straight pipe, 6 of one-inch caliber is for elbow, on the inwall of elbow 6 ends, have one section conical surface 5, conical surface place between metal straight pipe 1 and elbow 6 is set with a trapezoidal fourth cyanogen cushion rubber 8 and a rectangular plastic trim ring 4 respectively, and the outside screw in elbow 6 ends is connected with a locking gland 2.When mounted, as long as earlier with an end of metal straight pipe 1 successively suit upper trapezoid fourth cyanogen cushion rubber 3 and rectangular plastic trim ring 4, together insert then in the connection pipe fitting of elbow 6, the locking gland 2 of precession and connection pipe fitting elbow 6 outside screw again is till locking.The connection of elbow 6 the other ends is same as described above.The connection pipe fitting of other form as: the installation of pipe collar, threeway, loose joint be connected same as described above too.The utility model is specially adapted to caliber in the connection that seam or seamless steel pipe are arranged below three cun.
Claims (3)
1, a kind of flexible connecting structure of metal tube, it comprises metal straight pipe, connection pipe fitting, it is characterized in that on the inwall of connection pipe fitting end, having one section conical surface, conical surface place between metal straight pipe and connection pipe fitting is set with a trapezoidal cushion rubber and plastics trim ring respectively, and the outside screw in the connection pipe fitting end is connected with a locking gland.
2, flexible connecting structure according to claim 1 is characterized in that connection pipe fitting is meant elbow, pipe collar, threeway, loose joint.
3, flexible connecting structure according to claim 1 is characterized in that the plastics trim ring is a square plastic trim ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238245 CN2273799Y (en) | 1996-08-29 | 1996-08-29 | Flexible connection structure for metallic tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238245 CN2273799Y (en) | 1996-08-29 | 1996-08-29 | Flexible connection structure for metallic tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2273799Y true CN2273799Y (en) | 1998-02-04 |
Family
ID=33913595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96238245 Expired - Fee Related CN2273799Y (en) | 1996-08-29 | 1996-08-29 | Flexible connection structure for metallic tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2273799Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680584B (en) * | 2008-02-25 | 2011-06-08 | 石油国家工业公司 | Pressure isolation system for flexible pipe joints |
| CN102589338A (en) * | 2012-03-21 | 2012-07-18 | 刘滕军 | Pure titanium heat exchanger with trapezoidal water inlet and outlet ports |
| CN107514508A (en) * | 2017-10-20 | 2017-12-26 | 昆明群之英科技有限公司 | A kind of pipeline is compared with position device |
-
1996
- 1996-08-29 CN CN 96238245 patent/CN2273799Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680584B (en) * | 2008-02-25 | 2011-06-08 | 石油国家工业公司 | Pressure isolation system for flexible pipe joints |
| CN102589338A (en) * | 2012-03-21 | 2012-07-18 | 刘滕军 | Pure titanium heat exchanger with trapezoidal water inlet and outlet ports |
| CN107514508A (en) * | 2017-10-20 | 2017-12-26 | 昆明群之英科技有限公司 | A kind of pipeline is compared with position device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |