CN2881270Y - Screw-threaded joint for sealing - Google Patents
Screw-threaded joint for sealing Download PDFInfo
- Publication number
- CN2881270Y CN2881270Y CN 200620007879 CN200620007879U CN2881270Y CN 2881270 Y CN2881270 Y CN 2881270Y CN 200620007879 CN200620007879 CN 200620007879 CN 200620007879 U CN200620007879 U CN 200620007879U CN 2881270 Y CN2881270 Y CN 2881270Y
- Authority
- CN
- China
- Prior art keywords
- box cupling
- inwall
- lining
- pipe
- sealing
- 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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- Gasket Seals (AREA)
Abstract
The utility model relates to a coupling for seal pipe aiming mainly at solving the problems that existing solidify type screw-threaded resinous seal pipe is inconvenient for popularization and sealing effect of O-shape seal ring is poor; wherein, at the middle part of the inner wall of a coupling body (1) a ring groove (2) is positioned; the inner wall of the coupling body (1) at both sides of the ring groove (2) is provided with internal screw thread; the ring groove (2) is equipped with an elastic seal lining (3). The utility model adopts elastic sealing at screw thread precession part and protects the exposed part in the middle of the inner wall of the coupling body, thereby having the advantages of good anti-permeability performance, easy manufacture and perfect sealing effect.
Description
Technical field:
The utility model relates to a kind of pipe box cupling, especially sealed pipe box cupling that prevents the screw thread corrosion.
Background technique:
At present, the connection of pipeline generally adopts the pipe box cupling to be threaded, and when the pipeline of this Placement affords certain pressure, often produces the etching problem that screw thread oozes erosion and pipe box cupling stage casing exposed part.In petroleum industry, because oil, casing coupling bear tens of tons thrust load, the gap of screwed connection part is strengthened, it is particularly serious to ooze the erosion phenomenon.In order to address this problem, once take double-component curable thread sealing grease and added the measure of elasticity " O " type seal ring in pipe box cupling stage casing, ageing very strong and after curable thread sealing grease double-component is oozed and closed at the end that screws of oil, sleeve pipe, be not easy to promote; When using " O " type seal ring, after the pipe box cupling screws with pipe because the thread size deviation of pipe box cupling and pipe, to " O " type seal ring to compress degree different, can occur that " O " type seal ring quilt is crowded to be ruined, sealing effect is poor, causes pulling and running tool to be obstructed.
The model utility content:
In order to overcome the deficiency that existing curable thread sealing grease pipe box cupling is not easy to popularization and " O " type of use seal ring seal weak effect; the utility model provides a kind of sealed pipe box cupling; elastic packing has partly been adopted in the precession of sealing pipe box cupling double thread; protected box cupling inwall stage casing exposed part simultaneously, have antiseepage erosion performance good, be easy to process and the characteristics of good sealing effect.
The technical solution of the utility model is: sealing pipe box cupling comprises the box cupling body, and the inwall middle part of box cupling body has circular groove, and the box cupling body inwall of circular groove both sides is an internal thread, flexible seal cartridge in the circular groove.
The inwall of above-mentioned lining is the young conical surface of collar extension imperial palace; The centre of the inwall of lining has boss, and the lining inwall of boss both sides is the young conical surface of collar extension imperial palace.
The utlity model has following beneficial effect: owing to take such scheme; when the box cupling body is connected with pipe; metal button spun before this; it was threaded in the lining when pipe touched lining; realized the elastic packing of pipe thread precession part, lining has also been protected box cupling body inwall stage casing exposed part simultaneously, and antiseepage erosion performance is good; be easy to processing, good sealing effect.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is structural representations of another mode of execution of the utility model.
1-box cupling body among the figure, 2-circular groove, 3-lining, 4-boss, 5-pipe.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, sealing pipe box cupling comprises box cupling body 1, and the inwall middle part of box cupling body 1 has circular groove 2, and box cupling body 1 inwall of circular groove 2 both sides is an internal thread, flexible seal cartridge 3 in the circular groove 2, and the inwall of lining 3 is the young conical surface of collar extension imperial palace.As shown in Figure 2, also can have boss 4 in the centre of the inwall of lining 3, lining 3 inwalls of boss 4 both sides are the young conical surface of collar extension imperial palace.
When box cupling body 1 is connected with pipe 5; metal button spun before this; it was threaded in the lining 3 when pipe 5 touched lining 3; realized the elastic packing of pipe 5 screw thread precessions parts; lining 3 has also been protected box cupling body 1 inwall stage casing exposed part simultaneously; antiseepage erosion performance is good, is easy to processing, good sealing effect.
Claims (3)
1, a kind of sealed pipe box cupling comprises box cupling body (1), it is characterized in that: the inwall middle part of box cupling body (1) has circular groove (2), and box cupling body (1) inwall of circular groove (2) both sides is an internal thread, flexible seal cartridge (3) in the circular groove (2).
2, sealed pipe box cupling according to claim 1 is characterized in that: the inwall of lining (3) is the young conical surface of collar extension imperial palace.
3, sealed pipe box cupling according to claim 1 is characterized in that: the centre of the inwall of lining (3) has boss (4), and lining (3) inwall of boss (4) both sides is the young conical surface of collar extension imperial palace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620007879 CN2881270Y (en) | 2006-03-14 | 2006-03-14 | Screw-threaded joint for sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620007879 CN2881270Y (en) | 2006-03-14 | 2006-03-14 | Screw-threaded joint for sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881270Y true CN2881270Y (en) | 2007-03-21 |
Family
ID=37881110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620007879 Expired - Fee Related CN2881270Y (en) | 2006-03-14 | 2006-03-14 | Screw-threaded joint for sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881270Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644444A (en) * | 2012-04-24 | 2012-08-22 | 山东东宝钢管有限公司 | Double-seal anti-corrosion water injection well oil pipe |
| CN105386728A (en) * | 2015-12-07 | 2016-03-09 | 西安三环科技开发总公司 | Special coupling for high molecular weight polyethylene lined oil tube |
-
2006
- 2006-03-14 CN CN 200620007879 patent/CN2881270Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644444A (en) * | 2012-04-24 | 2012-08-22 | 山东东宝钢管有限公司 | Double-seal anti-corrosion water injection well oil pipe |
| CN105386728A (en) * | 2015-12-07 | 2016-03-09 | 西安三环科技开发总公司 | Special coupling for high molecular weight polyethylene lined oil tube |
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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 |