CN2746116Y - Polish rod anti-blowout sealing device - Google Patents
Polish rod anti-blowout sealing device Download PDFInfo
- Publication number
- CN2746116Y CN2746116Y CN 200420070690 CN200420070690U CN2746116Y CN 2746116 Y CN2746116 Y CN 2746116Y CN 200420070690 CN200420070690 CN 200420070690 CN 200420070690 U CN200420070690 U CN 200420070690U CN 2746116 Y CN2746116 Y CN 2746116Y
- Authority
- CN
- China
- Prior art keywords
- polished rod
- bearing
- utility
- link block
- abrasion
- 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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- Treatment Of Fiber Materials (AREA)
Abstract
The utility model provides a polish rod anti-blowout sealing device which is composed of a sealing pin 1, a guide sleeve 2, a spring 3, a back cap 4, a positioning pin 5, an abrasion-proof sleeve 6, a bearing 7, a pressing cap 8, and a polish-rod sealing device 9. The utility model adopts the structure that the lateral face of the polish-rod sealing device is provided with the sealing pin which is orderly connected with the guide sleeve and the back cap; the spring is clamped between the sealing pin and the back cap; the abrasion-proof sleeve is fixed on an outer ring of the bearing; the abrasion-proof sleeve and the bearing are fixed on the sealing pin through the positioning pin. Therefore, the utility model greatly reduce the abrasion to the polish rod. When the polish rod drops into a well, the sealing pin is inserted into the pressing cap under the action of spring force so as to realize automatic blowout prevention. The utility model has the advantages of reasonable design and simple structure, and is suitable for application on site.
Description
Technical field:
The utility model relates to the downhole tool that uses on a kind of oilfield, particularly a kind of polished rod blowout prevention sealer.
Background technology:
At present, all there is in the use blowout hookup wearing and tearing polished rod automatically in the various spraying-proof polished rod sealers that use in the oil field, cause that polished rod is disconnected to be taken off and stuck, thereby make the oil well operation, have improved cost of production.
Summary of the invention:
The purpose of this utility model is to provide a kind of polished rod blowout prevention sealer, can realize automatic blowout prevention, can solve the problem of automatic blowout hookup wearing and tearing polished rod again, thereby reduce production costs.
The purpose of this utility model is to realize like this, it is by link block (1), fairlead (2), spring (3), back of the body cap (4), alignment pin (5), wear-resistant sleeve (6), bearing (7), pressure cap (8), polished rod sealer (9) is formed, be connected to link block (1) in polished rod sealer (9) side, link block (1) and fairlead (2), back of the body cap (4) connects successively, accompany spring (3) between link block (1) and back of the body cap (4), wear-resistant sleeve (6) is fixed on bearing (7) outer shroud, wear-resistant sleeve (6) and bearing (7) are fixed on the link block (1) by alignment pin (5), and polished rod sealer (9) lower end is connected with pressure cap (8).
In the thickened oil recovery process, this polished rod blowout prevention sealer since automatic blowout hookup place polished rod sealer above, avoided viscous crude to stick with paste solid axle and held, the friction form that has guaranteed bearing and polished rod is rolling friction; Simultaneously add an abrasion-resistant metal cover in the outer race outside because abrasion-resistant metal cover hardness ratio polished rod case hardness is low when design, make between polished rod and the abrasion-resistant metal cover pair of friction components by firmly to cirrhosis for firmly to soft, so greatly reduce wearing and tearing to polished rod.When polished rod taking place drop to burst accident in the well, link block is inserting in the pressure cap under the effect of spring force, thereby realizes automatic blowout prevention.
The utility model is connected to link block owing to having adopted in the polished rod sealer side, link block is connected successively with fairlead, back of the body cap, accompany spring between offset and back of the body cap, wear-resistant sleeve is fixed on the outer race, wear-resistant sleeve and bearing are fixed on the link block by alignment pin, therefore greatly reduce the wearing and tearing to polished rod.When polished rod taking place drop to burst accident in the well, link block is inserting in the pressure cap under the effect of spring force, thereby realizes automatic blowout prevention, and the utility model is reasonable in design, and is very simple in structure, is fit to field popularization application.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing the utility model is further specified.
Embodiment
As shown in the figure, the utility model is made up of link block 1, fairlead 2, spring 3, back of the body cap 4, alignment pin 5, wear-resistant sleeve 6, bearing 7, pressure cap 8, polished rod sealer 9, be connected to link block 1 in polished rod sealer 9 sides, link block 1 is connected successively with fairlead 2, back of the body cap 4, link block 1 and 4 on cap of the back of the body accompany spring 3, wear-resistant sleeve 6 is fixed on bearing 7 outer shrouds, and wear-resistant sleeve 6 and bearing 7 are fixed on the link block 1 by alignment pin 5, and polished rod sealer 9 lower ends are connected with pressure cap 8.
To transforming of the existing polished rod sealer in oil field, on polished rod sealer, add once automatic blowout hookup and can finish enforcement.
Claims (1)
1, a kind of polished rod blowout prevention sealer, it is by link block (1), fairlead (2), spring (3), back of the body cap (4), alignment pin (5), wear-resistant sleeve (6), bearing (7), pressure cap (8), polished rod sealer (9) is formed, it is characterized in that: be connected to link block (1) in polished rod sealer (9) side, link block (1) and fairlead (2), back of the body cap (4) connects successively, accompany spring (3) between link block (1) and back of the body cap (4), wear-resistant sleeve (6) is fixed on bearing (7) outer shroud, wear-resistant sleeve (6) and bearing (7) are fixed on the link block (1) by alignment pin (5), and polished rod sealer (9) lower end is connected with pressure cap (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070690 CN2746116Y (en) | 2004-09-17 | 2004-09-17 | Polish rod anti-blowout sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070690 CN2746116Y (en) | 2004-09-17 | 2004-09-17 | Polish rod anti-blowout sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2746116Y true CN2746116Y (en) | 2005-12-14 |
Family
ID=35582697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420070690 Expired - Fee Related CN2746116Y (en) | 2004-09-17 | 2004-09-17 | Polish rod anti-blowout sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2746116Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900392A (en) * | 2012-09-03 | 2013-01-30 | 中国石油化工股份有限公司 | Controllable pumping-well blowout preventer |
-
2004
- 2004-09-17 CN CN 200420070690 patent/CN2746116Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900392A (en) * | 2012-09-03 | 2013-01-30 | 中国石油化工股份有限公司 | Controllable pumping-well blowout preventer |
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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: 20051214 Termination date: 20091019 |