CN202100211U - Polished rod shock absorber - Google Patents
Polished rod shock absorber Download PDFInfo
- Publication number
- CN202100211U CN202100211U CN2011201492344U CN201120149234U CN202100211U CN 202100211 U CN202100211 U CN 202100211U CN 2011201492344 U CN2011201492344 U CN 2011201492344U CN 201120149234 U CN201120149234 U CN 201120149234U CN 202100211 U CN202100211 U CN 202100211U
- Authority
- CN
- China
- Prior art keywords
- polished rod
- centralizer
- rod eye
- eye
- shock absorber
- 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
The utility model provides a polished rod shock absorber, and belongs to devices for oilfield production. The polished rod shock absorber comprises a polished rod eye, wherein, a hairy braid centralizer is arranged above the polished rod eye; auxiliary springs are respectively mounted on the left side and the right side of space between the polished rod eye and the hairy braid centralizer; and a main spring is arranged at the middle part of the space between the polished rod eye and the hairy braid centralizer. When the polished rod shock absorber is used, the impact force produced when the polished rod eye goes upwards but a polished rod still goes downwards can be effectively buffered, the polished rod or a sucker rod is avoided from cracking, the normal conduction of oil production is guaranteed, and the production cost is reduced; and after the impact force is buffered, transient loads are reduced, so that a motor of an oil sucking machine is protected.
Description
Technical field
The utility model provides a kind of field produces to use device, especially a kind of damping device of polished rod.
Background technology
At present, when recover the oil and to work with beam pumping unit in the oil field, occur the situation that the polished rod downstream rate is lower than the downstream rate of polished rod eye sometimes, and transfer to when up when polished rod eye, polished rod or sucker rod still are in downstream state, and suffered impact force is very big.At this moment can cause the fracture of polished rod or sucker rod, parking maintenance can cause and produce pause, cost of production strengthens.And moment can burn out pumping-unit motor during overload.
Summary of the invention
The utility model technical problem to be solved is a kind of polished rod damper to be provided, with buffering polished rod or the suffered impact force of sucker rod.
The utility model is to realize like this; The polished rod damper, it has polished rod eye, polished rod eye top hairiness plait centralizer; The left and right sides between described polished rod eye and hair plait centralizer is separately installed with secondary spring, and there is main spring at the middle part between polished rod eye and the hair plait centralizer.
Have casing to be fixed on below mao plait centralizer in the outside of the upper end of described two secondary springs respectively, have guide peg to be fixed on below mao plait centralizer in the inboard of two secondary springs respectively, the polished rod eye upper surface below guide peg is fluted.
Two ends at described hair plait centralizer are fixed with back-up ring respectively.
Adopt the polished rod damper of said structure, during use, can effectively cushion the impact force that produces when the up and polished rod of polished rod eye is in downstream state, avoided the fracture of polished rod or sucker rod, what guaranteed to recover the oil and produce normally carries out, and has reduced cost of production.Impact force has reduced the moment load after obtaining buffering, has protected pumping-unit motor.
Description of drawings
Fig. 1 is the sketch map of the utility model structure.
Fig. 2 is the A-A sectional drawing of Fig. 1.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing further specifies the utility model.
Shown in accompanying drawing; The polished rod damper of the utility model; It has polished rod eye 9; Polished rod eye top hairiness plait centralizer 3, the left and right sides between described polished rod eye 9 and hair plait centralizer 3 is separately installed with secondary spring 7, and there is main spring 12 at the middle part between polished rod eye 9 and the hair plait centralizer 3.
During use, polished rod 11 passes polished rod eye, main spring, hair plait centralizer, and its top is realized fixing through square clamp 1.Hair plait 2 lower ends are fixed on the breach at the bottom of polished rod eye, the process that makes progress polished rod eye, hair plait centralizer two ends, are connected on the oil pumper at last.Between square clamp and the hair plait centralizer is existing testing arrangement.When the up and polished rod of polished rod eye is in downstream state, polished rod eye produce to the impact force of polished rod by secondary spring and main spring absorption, after spring was squeezed, polished rod eye moved to hair plait centralizer direction more slowly, played cushioning effect.
The height of main spring can be lower than two secondary springs, and during use, secondary spring works earlier, and when impact force was big, main spring played a role.
There is casing 5 to be fixed on below mao plait centralizer 3 respectively in the outside of the upper end of described two secondary springs 7; There is guide peg 6 to be fixed on below mao plait centralizer 3 the polished rod eye upper surface fluted 8 below guide peg respectively in the inboard of two secondary springs.During use, casing plays the protective effect to secondary spring, and stressed when excessive when secondary spring, guide peg can insert in the groove, stops that secondary spring receives further compression, also plays the protective effect to secondary spring.The lower end of two secondary springs can be fixed on the polished rod eye through bolt 10.
Two ends at described hair plait centralizer 3 are fixed with back-up ring 4 respectively.Back-up ring plays the barrier effect to the hair plait, prevents that it breaks away from hair plait centralizer in running.
Claims (3)
1. polished rod damper; It has polished rod eye (9); Polished rod eye top hairiness plait centralizer (3); It is characterized in that the left and right sides between described polished rod eye (9) and hair plait centralizer (3) is separately installed with secondary spring (7), there is main spring (12) at the middle part between polished rod eye (9) and the hair plait centralizer (3).
2. polished rod damper as claimed in claim 1; It is characterized in that; There is casing (5) to be fixed on below mao plait centralizer (3) respectively in the outside of the upper end of described two secondary springs (7); There is guide peg (6) to be fixed on below mao plait centralizer (3) the polished rod eye upper surface below guide peg fluted (8) respectively in the inboard of two secondary springs.
3. according to claim 1 or claim 2 polished rod damper is characterized in that, is fixed with back-up ring (4) respectively at the two ends of described hair plait centralizer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201492344U CN202100211U (en) | 2011-05-02 | 2011-05-02 | Polished rod shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201492344U CN202100211U (en) | 2011-05-02 | 2011-05-02 | Polished rod shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100211U true CN202100211U (en) | 2012-01-04 |
Family
ID=45386227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201492344U Expired - Fee Related CN202100211U (en) | 2011-05-02 | 2011-05-02 | Polished rod shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100211U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939032A (en) * | 2014-04-18 | 2014-07-23 | 武献文 | Novel disengaging-preventing shock absorption beam hanger |
| WO2018153226A1 (en) * | 2017-02-23 | 2018-08-30 | The Hongkong Polytechnic University | Improved passive vibration reducing apparatus |
| CN109281622A (en) * | 2018-11-21 | 2019-01-29 | 北京卫星制造厂有限公司 | A kind of elongate drill rod is with can the servo-actuated antivibration mount of automatic unlocking |
-
2011
- 2011-05-02 CN CN2011201492344U patent/CN202100211U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939032A (en) * | 2014-04-18 | 2014-07-23 | 武献文 | Novel disengaging-preventing shock absorption beam hanger |
| WO2018153226A1 (en) * | 2017-02-23 | 2018-08-30 | The Hongkong Polytechnic University | Improved passive vibration reducing apparatus |
| CN109312600A (en) * | 2017-02-23 | 2019-02-05 | 香港理工大学 | Improved passive dampening apparatus |
| US10675743B2 (en) | 2017-02-23 | 2020-06-09 | The Hong Kong Polytechnic University | Passive vibration reducing apparatus |
| CN109312600B (en) * | 2017-02-23 | 2020-09-04 | 香港理工大学 | Improved passive vibration damping device |
| CN109281622A (en) * | 2018-11-21 | 2019-01-29 | 北京卫星制造厂有限公司 | A kind of elongate drill rod is with can the servo-actuated antivibration mount of automatic unlocking |
| CN109281622B (en) * | 2018-11-21 | 2020-05-12 | 北京卫星制造厂有限公司 | Vibration resisting device capable of automatically unlocking and following for slender drill rod |
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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: 20120104 Termination date: 20120502 |