CN201214987Y - Torsion sucker rod - Google Patents
Torsion sucker rod Download PDFInfo
- Publication number
- CN201214987Y CN201214987Y CNU2008200225236U CN200820022523U CN201214987Y CN 201214987 Y CN201214987 Y CN 201214987Y CN U2008200225236 U CNU2008200225236 U CN U2008200225236U CN 200820022523 U CN200820022523 U CN 200820022523U CN 201214987 Y CN201214987 Y CN 201214987Y
- Authority
- CN
- China
- Prior art keywords
- rod
- sucker rod
- bar head
- rod head
- torsion
- 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 - Lifetime
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model relates to a torsion sucker rod which is formed by the connection of a collar (1), a rod head (2), a rod head thrust table (3), a square wrench (4) and a rod body (5). The collar (1) is a conical internal thread, the rod head (2) is a conical external thread, and the collar (1) and the rod head (2) are mutually connected. The utility model adopts the connection of conical threads, has the advantages of good disengaging prevention capacity, high twisting resistance, long service life and the like, and is mainly applied to the screw pumps for oil production and similar occasions.
Description
One, technical field
The utility model relates to the oil exploitation screw pump, particularly a kind of torsion sucker rod.
Two, background technology
The bar string combination that is used for the oil recovery of drive screw pump at present generally adopts common sucker rod to substitute, but common sucker rod is used for screw pump oil production exists following shortcoming or deficiency: the requirement of 1. common sucker rod torsionless, torsional strength is low, generally be applied to carry the reciprocating motion of longitudinal stretching load, so the anti-twisting property deficiency, easily broken taking off.2. common sucker rod adopts straight thread to connect, and mainly provide the pretightning force of screw thread by the elastic deformation of stress groove, and the tooth form of straight thread is less, can not carry and apply bigger pretension strength, when therefore being used to rotate the screw pump of load, very easily causes the dropout fault.
Three, summary of the invention
The purpose of this utility model provides a kind of screw pump torsion sucker rod that enough torsional strengths is arranged, can effectively prevent to thread off, be suitable for existing construction operation instrument and oil production technology.
Torsion sucker rod described in the utility model pushes away cushion cap, spanner side, the body of rod by box cupling, bar head, bar head and connects and composes.Described box cupling is a conical internal thread, and the bar head is a conical external screw thread, and box cupling is connected with the bar head.
Wherein said spanner side is the four directions.19～38.1 millimeters of described body of rod diameter ranges.
The utility model has the following advantages compared with prior art:
1, owing to adopted the tapered thread of unstressed groove structure, effectively avoids common sucker rod stress groove location mechanical strength low, can not carry the defective of big torsional load.
2, the tapered thread tooth form of Cai Yonging is bigger, at box cupling and pushing away under the cooperation of cushion cap, can reach the tight distance of suitable screw thread, thereby enough anti-tripping frictional force is provided.Avoided effectively that common sucker rod is little because of bar head tooth form, stress scouring machine tool intensity low cause can not apply the anti-tripping strength of big pretension, easily cause the defective of dropout accident.
3, adopted spanner side and the body of rod identical, can be suitable for the existing construction operation instrument in oil field and existing oil production technology and frock easily, had easy construction, the advantage that operation and cost for oil production are low with common sucker rod.
Four, description of drawings
Accompanying drawing is a kind of structural representation of the present utility model
Five, the specific embodiment
With reference to accompanying drawing, a kind of torsion sucker rod pushes away cushion cap 3, spanner side 4, the body of rod 5 by box cupling 1, bar head 2, bar head and connects and composes.Box cupling 1 is a conical internal thread, and bar head 2 is a conical external screw thread, and box cupling 1 is connected with bar head 2.
Wherein said spanner side 4 is a tetragonal.19～38.1 millimeters of the body of rod 5 diameter ranges.
Claims (3)
1, a kind of torsion sucker rod, pushing away cushion cap (3), spanner side (4), the body of rod (5) by box cupling (1), bar head (2), bar head connects and composes, it is characterized in that described box cupling (1) is a conical internal thread, bar head (2) is a conical external screw thread, and box cupling (1) is connected with bar head (2).
2, a kind of torsion sucker rod according to claim 1, its feature are that also spanner side (4) is tetragonal.
3, a kind of torsion sucker rod according to claim 1, its feature also is: 19～38.1 millimeters of the body of rod (5) diameter ranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200225236U CN201214987Y (en) | 2008-05-14 | 2008-05-14 | Torsion sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200225236U CN201214987Y (en) | 2008-05-14 | 2008-05-14 | Torsion sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201214987Y true CN201214987Y (en) | 2009-04-01 |
Family
ID=40520191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200225236U Expired - Lifetime CN201214987Y (en) | 2008-05-14 | 2008-05-14 | Torsion sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201214987Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434114A (en) * | 2012-01-10 | 2012-05-02 | 陈媛 | Anti-tripping sucker rod |
-
2008
- 2008-05-14 CN CNU2008200225236U patent/CN201214987Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434114A (en) * | 2012-01-10 | 2012-05-02 | 陈媛 | Anti-tripping sucker rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090401 |