CN2599209Y - Flexible oil pumping rod top thread clamp joint - Google Patents
Flexible oil pumping rod top thread clamp joint Download PDFInfo
- Publication number
- CN2599209Y CN2599209Y CNU032045522U CN03204552U CN2599209Y CN 2599209 Y CN2599209 Y CN 2599209Y CN U032045522 U CNU032045522 U CN U032045522U CN 03204552 U CN03204552 U CN 03204552U CN 2599209 Y CN2599209 Y CN 2599209Y
- Authority
- CN
- China
- Prior art keywords
- joint
- card
- flexible rod
- oil pumping
- pumping rod
- 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
A flexible oil pumping rod top thread clamp joint is provided, mainly solveing the problem that the flexible oil pumping rod joint is easy to break off. The utility model is characterized in that: a wedge-shaped wedging card (2) is arranged between the inner conical surface of a joint rope loop (1) and a flexible oil pumping rod (3); the wedging card (2) is provided with a top thread (5) outside and then covered by a locking nut (4) so as to form the flexible oil pumping rod top thread clamp joint; a plurality of flexible oil pumping rod top thread clamp joints are fixed with interval on the oil pumping rod (3). The utility model has characteristics that the flexible oil pumping rod joint is stressed uniformly and difficult to break off.
Description
Technical field:
The utility model relates to oil field petroleum production engineering class downhole tool, especially flexible rod jackscrew card joint.
Background technology:
In recovering the oil in the oil field, along with poly-continuous expansion of driving scale, rod and tube partial-wear on the rod-pumped well is serious, be to adopt flexible rod and plunger suspending weight to take out the method that poly-pump is used in combination, utilize suspending weight pump bottom suspending weight, make flexible rod be in extended state, like this, stress point moves down under the pump, reaches the purpose of anti-eccentric wear.Because flexible rod wire rope left-handed by skin, internal layer dextrorotation is formed, in the pumping process, the rotation pulling force that the discontinuity of upper and lower stroke, skin are born is bigger than the rotation pulling force that internal layer bears, and long-time running will produce the disconnected phenomenon of taking off in the joint.The flexible rod joint of using has flexible rod to irritate zinc joint and flexible rod mechanical card joint at present.It is to pour in the rope sling at rope socket place after the heating of zinc high temperature that flexible rod is irritated the zinc joint, and high temperature makes quenching of wire rope, and joint is easily broken to be taken off thereby make; Flexible rod mechanical card joint is to utilize very heavyly with in two high strength cards wedging joints, and card blocks the stressed position of steel cable termina and inhomogeneous, and joint is easily broken to be taken off thereby make.Like this, just influenced the normal operation of rod-pumped well.
The utility model content:
In order to overcome the easily broken deficiency of taking off of existing flexible rod joint, the utility model provides a kind of flexible rod jackscrew card joint, and this flexible rod jackscrew card joint has stressed evenly, the not easily broken characteristics of taking off in flexible rod joint.
The technical scheme that the utility model adopted is: this flexible rod jackscrew card joint comprises joint rope sling, flexible rod and wedging card, wedge shape wedging card is arranged between joint rope sling internal conical surface and flexible rod, the wedging card has the nut that is locked behind the jackscrew to cover mutually outward and forms flexible rod jackscrew card joint, several flexible rod jackscrew card joints of fixed interval again on flexible rod.
Several above-mentioned flexible rod jackscrew card joints are two.
The utlity model has following beneficial effect: because this flexible rod jackscrew card joint fixed interval on flexible rod has several flexible rod jackscrew card joints, can progressively slow down release spiral power, so this flexible rod jackscrew card joint has stressed evenly, the not easily broken characteristics of taking off in flexible rod joint.
Description of drawings:
Accompanying drawing 1 is the utility model structure sectional view.
1-joint rope sling among the figure, 2-wedges card, 3-flexible rod, 4-locking nut, 5-jackscrew, 6-circulator.
The specific embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
By shown in Figure 1, this flexible rod jackscrew card joint comprises joint rope sling 1, sucker rod 3 and wedging card 2, wedge shape wedging card 2 is arranged between joint rope sling 1 internal conical surface and flexible rod 3, there is jackscrew 5 to push up mutually outside the wedging card 2, cover rope sling 1 mutually with locking nut 4 afterwards and fix, form a flexible rod jackscrew card joint; Fixed interval has 2 flexible rod jackscrew card joints on flexible rod 3, can progressively slow down to discharge spiral power, has stressed evenly, the not easily broken characteristics of taking off in flexible rod joint; Simultaneously can be according to actual conditions, fixed interval has 3 or 5 flexible rod jackscrew card joints on the flexible rod 3, with the requirement to spiral power of the length that adapts to sucker rod 3.
During actual installation, will wedge card 2 usefulness jackscrews 5 and head into, screw locking nut 4, can normally use then with after circulator 6 is connected.
Claims (2)
1, a kind of flexible rod jackscrew card joint, comprise joint rope sling (1), sucker rod (3) and wedging card (2), it is characterized in that: wedge shape wedging card (2) is arranged between joint rope sling (1) internal conical surface and flexible rod (3), wedging card (2) is outer to be had the nut (4) that is locked behind the jackscrew (5) to cover mutually and forms flexible rod jackscrew card joint, several flexible rod jackscrew card joints of fixed interval again on sucker rod (3).
2, flexible rod jackscrew card joint according to claim 1 is characterized in that: some flexible rod jackscrew card joints are two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032045522U CN2599209Y (en) | 2003-02-24 | 2003-02-24 | Flexible oil pumping rod top thread clamp joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032045522U CN2599209Y (en) | 2003-02-24 | 2003-02-24 | Flexible oil pumping rod top thread clamp joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2599209Y true CN2599209Y (en) | 2004-01-14 |
Family
ID=34158596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032045522U Expired - Fee Related CN2599209Y (en) | 2003-02-24 | 2003-02-24 | Flexible oil pumping rod top thread clamp joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2599209Y (en) |
-
2003
- 2003-02-24 CN CNU032045522U patent/CN2599209Y/en not_active Expired - Fee Related
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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 |