CN202544764U - Straight-through centering device for coupling - Google Patents
Straight-through centering device for coupling Download PDFInfo
- Publication number
- CN202544764U CN202544764U CN2012201632310U CN201220163231U CN202544764U CN 202544764 U CN202544764 U CN 202544764U CN 2012201632310 U CN2012201632310 U CN 2012201632310U CN 201220163231 U CN201220163231 U CN 201220163231U CN 202544764 U CN202544764 U CN 202544764U
- Authority
- CN
- China
- Prior art keywords
- ball
- main body
- wall
- guiding gutter
- last
- 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
Links
Images
Landscapes
- Pivots And Pivotal Connections (AREA)
Abstract
The utility model relates to petroleum industry equipment, in particular to a straight-through centering device for a coupling. The technical scheme is that the device mainly comprises an upper ball cover, balls, a main body and pressing screws, wherein a connecting thread is formed on the inner wall of the main body; a lower ball seat is arranged on the top of the outer wall of the main body; and the upper side of the lower ball seat is connected with the upper ball cover through the pressing screws. The device has the advantages that 1, the device has a centering effect, the balls have high axial and radial flexibility, and a pipe wall is prevented from being subjected to secondary damage; and 2, the device can be directly arranged on an oil pipe or a casing in a matched mode during processing, and is not required to be arranged when descending to a well, so that construction time is greatly saved, and cost is saved.
Description
Technical field
The utility model relates to a kind of petroleum industry equipment, particularly a kind of box cupling direct linkage type centralizer.
Background technology
At present; Along with deepening continuously of oil field development; Particularly since the sucker rod pumping, the friction of well rod and tube inner wall occurs between box cupling and the tube inner wall mostly, and this is because the box cupling diameter in the sucker rod cross section is thicker; Sucker rod up and down in the running at first with the tube inner wall friction, and the wear phenomenon that As time goes on produces is more and more serious.
Summary of the invention
The purpose of the utility model is exactly the above-mentioned defective that exists to prior art, and a kind of box cupling direct linkage type centralizer is provided, and can reduce wear effectively, avoids tube wall to receive the secondary injury.
Its technical scheme is: mainly be made up of last ball lid, ball, main body and housing pin, the inwall of main body is provided with connecting thread, and the top of main body outer wall is provided with down ball base, and the upside of described ball base down connects through housing pin goes up the ball lid.
The outer wall of following ball base is provided with down guiding gutter, descends ball grooves and following bracing frame, is provided with a plurality of dowel holes at the upper surface that descends ball base; The outer wall of last ball lid is provided with guiding gutter, goes up ball grooves and upper support frame, and the soffit that covers at last ball is provided with a plurality of dowel holes and matches with the dowel hole of the upper surface of following ball base; Described guiding gutter down and last guiding gutter are formed guiding gutter; Described ball grooves down and last ball grooves are formed ball grooves; Described bracing frame down and upper support frame are formed bracing frame.
Above-mentioned ball grooves is a spherical structure.
The beneficial effect of the utility model is: the one, have centralizing function, and the 2nd, ball has axially and good flexibility radially, avoids tube wall to receive the secondary injury; The 2nd, in process, can be directly be installed on relevant or the sleeve pipe the utility model is supporting, not be used in centralizer is installed in the process of going into the well, saved the engineering time greatly, provide cost savings.
Description of drawings
Accompanying drawing 1 is the vertical view of the utility model;
Accompanying drawing 2 is side sectional views of the utility model;
Accompanying drawing 3 is vertical views of the following ball base of the utility model;
Among the last figure: go up ball lid 1, ball 2, main body 3 connecting threads 4, go up guiding gutter 5.1, down guiding gutter 5.2, housing pin 6, go up ball grooves 7.1, ball grooves 7.2, dowel hole 8, ball base 9, upper support frame 10.1, bracing frame 10.2 down down down.
The specific embodiment
In conjunction with accompanying drawing 1-3, the utility model is done further to describe:
The utility model mainly is made up of last ball lid 1, ball 2, main body 3 and housing pin 6, and the inwall of main body 3 is provided with connecting thread 4, and the top of main body outer wall is provided with down ball base 9, and the upside of described ball base 9 down connects upward through housing pin 6 that ball covers 1.
The outer wall of following ball base 9 is provided with down guiding gutter 5.2, descends ball grooves 7.2 and following bracing frame 10.2, is provided with a plurality of dowel holes 8 at the upper surface that descends ball base 9; The outer wall of last ball lid 1 is provided with guiding gutter 5.1, goes up ball grooves 7.1 and upper support frame 10.1, covers 1 soffit at last ball and is provided with a plurality of dowel holes and matches with the dowel hole of the upper surface of following ball base 9; Described guiding gutter 5.2 is down formed guiding gutter with last guiding gutter 5.1; Described ball grooves 7.2 is down formed ball grooves with last ball grooves 7.1; Described bracing frame 10.2 is down formed bracing frame with upper support frame 10.1.
Above-mentioned ball grooves is a spherical structure, and wherein the size of spherical structure is the size greater than 1/2nd spheroids, and like this, what ball can be firm is fixed in the ball grooves, and can not eject.
The utility model can be directly be installed on relevant or the sleeve pipe the utility model is supporting in process, not be used in centralizer is installed in the process of going into the well, and has saved the engineering time greatly, provides cost savings.
Claims (3)
1. box cupling direct linkage type centralizer; It is characterized in that: mainly form by last ball lid (1), ball (2), main body (3) and housing pin (6); The inwall of main body (3) is provided with connecting thread (4); The top of main body outer wall is provided with down ball base (9), and the upside of described ball base (9) down is through ball lid (1) in housing pin (6) connection.
2. box cupling direct linkage type centralizer according to claim 1; It is characterized in that: the outer wall of following ball base (9) is provided with down guiding gutter (5.2), descends ball grooves (7.2) and following bracing frame (10.2), is provided with a plurality of dowel holes (8) at the upper surface that descends ball base (9); The outer wall of last ball lid (1) is provided with guiding gutter (5.1), goes up ball grooves (7.1) and upper support frame (10.1), and the soffit that covers (1) at last ball is provided with a plurality of dowel holes and matches with the dowel hole of the upper surface of following ball base (9); Described guiding gutter (5.2) is down formed guiding gutter with last guiding gutter (5.1); Described ball grooves (7.2) down and last ball grooves (7.1) are formed ball grooves; Described bracing frame (10.2) down and upper support frame (10.1) are formed bracing frame.
3. box cupling direct linkage type centralizer according to claim 2 is characterized in that: described ball grooves is a spherical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201632310U CN202544764U (en) | 2012-04-18 | 2012-04-18 | Straight-through centering device for coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201632310U CN202544764U (en) | 2012-04-18 | 2012-04-18 | Straight-through centering device for coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202544764U true CN202544764U (en) | 2012-11-21 |
Family
ID=47165416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201632310U Expired - Fee Related CN202544764U (en) | 2012-04-18 | 2012-04-18 | Straight-through centering device for coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202544764U (en) |
-
2012
- 2012-04-18 CN CN2012201632310U patent/CN202544764U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205401953U (en) | Oil pipe way fixing base is taken out to oil in pit | |
| CN105781443A (en) | Variable-diameter centering device | |
| CN105773509A (en) | Sleeve provided with self-tapping screw | |
| CN202544764U (en) | Straight-through centering device for coupling | |
| CN203905892U (en) | Outburst preventing device for compression type packer | |
| CN202451096U (en) | Oil-water well casing mandrel | |
| CN201428405Y (en) | Patch device for casing damaged well | |
| CN202926234U (en) | Inner pipe and outer pipe connecting mechanism of double-wall drill rod | |
| CN106968936B (en) | Ball-throwing type fixed valve | |
| CN203097708U (en) | Anti-fall device for transmission shaft of screw drill | |
| CN201196036Y (en) | Roller type centralizer for continuous oil pipe | |
| CN206608115U (en) | A kind of tapered stabilizer for oil drilling | |
| CN106002840A (en) | Steel wire retainer ring mounting tool for hollow long shaft parts | |
| CN203835323U (en) | Packer capable of being taken out | |
| CN208473771U (en) | Blowout prevention valve | |
| CN205572320U (en) | Civil aircraft fuel part biax cover dismounting device | |
| CN2926580Y (en) | Multi-stage sandproof oil pump | |
| CN202850969U (en) | Downhole spiral rotational flow gas-liquid separation device of gas well | |
| CN205219005U (en) | Step shaft bearing installing tool | |
| CN203394341U (en) | Leg tube of telescoping ladder | |
| CN220133918U (en) | Oil pipe centralizer | |
| CN204200106U (en) | A kind of hydraulic casing centralizer | |
| CN202284462U (en) | Uniform steam injection bleeder for horizontal well | |
| CN209369763U (en) | Flange anti-drop device | |
| CN203403836U (en) | Anti-falling oil pipe centralizer |
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: 20121121 Termination date: 20150418 |
|
| EXPY | Termination of patent right or utility model |