CN202348146U - Shock absorber for sucker rod - Google Patents
Shock absorber for sucker rod Download PDFInfo
- Publication number
- CN202348146U CN202348146U CN2011205231803U CN201120523180U CN202348146U CN 202348146 U CN202348146 U CN 202348146U CN 2011205231803 U CN2011205231803 U CN 2011205231803U CN 201120523180 U CN201120523180 U CN 201120523180U CN 202348146 U CN202348146 U CN 202348146U
- Authority
- CN
- China
- Prior art keywords
- sucker rod
- pressure measuring
- measuring cylinder
- pressure cylinder
- pole
- 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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- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a shock absorber for a sucker rod. The shock absorber comprises an upper joint and a lower joint which are respectively connected with the sucker rod; a centre rod is fixed in the upper joint; a pressure cylinder connected with the centre rod in a sealing manner is arranged outside the centre rod; hydraulic oil is accommodated in the pressure cylinder; one end of the pressure cylinder is fixedly connected with the lower joint; a shock-absorbing piston hinged with the centre rod is arranged in the pressure cylinder; and a shock-absorbing spring is arranged in the closed end of the pressure cylinder. The shock absorber has a simple structure, is designed reasonably, has an elastic buffering effect, and can reduce axial and radial stress, so as to prevent the sucker rod from fatigue fracture and reduce the workload of workers.
Description
Technical field
The utility model relates to the oil drilling machine technical field, relates in particular to a kind of sucker rod damper.
Background technology
At present; Pump in the lifting process by the bar pump; The sucker rod roofbolt is owing to receive the influence of factors such as OIH liquid buoyancy, frictional force and fluid thickness power; The bottom sucker rod is stressed very complicated, and sucker rod is easy to occur problems such as bottom rod broken, dropout and eccentric wear like this bearing bigger axial force and radial load in the running up and down.Existing sucker rod is low application life, often needs shutdown and repaire well, has influenced operating efficiency, and has increased working strength of workers.Though OIH liquid can be directly as buffer, thereby plays the bumper and absorbing shock effect, because the rigid particle of oil-containing impurity mostly in the fluid, these particles get into fluid cylinders and can cause the fluid cylinder inwall to scratch, thereby cause defective shock absorber, and damping effect is bad.
The utility model content
The utility model provides a kind of simple in structure, reasonable in design to the defective that prior art exists, and has elastic buffer, can subdue axially and radial stresses, thereby prevent the sucker rod fatigue fracture, can alleviate a kind of sucker rod damper of workman's work load.
For solving the problems of the technologies described above, the technical scheme of the utility model is: a kind of sucker rod damper comprises the top connection and the lower contact that are connected with sucker rod respectively; Be fixed with center-pole in the said top connection; Said center-pole outside is provided with the pressure measuring cylinder that is tightly connected with it, fills hydraulic oil in the said pressure measuring cylinder, and said pressure measuring cylinder one end is fixedly connected with lower contact; Be provided with the daming piston hinged in the said pressure measuring cylinder, be provided with damping spring in the blind end of said pressure measuring cylinder with said center-pole.
The openend of said pressure measuring cylinder is provided with O-ring seal, and the inboard of said O-ring seal contacts with center-pole.
The free end of said damping spring is provided with and the contacted back-up ring of daming piston.
After having adopted technique scheme, the beneficial effect that the utility model is obtained is: the utility model is simple in structure, and is reasonable in design, has elastic buffer, can subdue axially and radial stresses, thereby prevent the sucker rod fatigue fracture, alleviated workman's work load.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
Shown in accompanying drawing, a kind of sucker rod damper comprises the top connection 1 and lower contact 2 that are connected with sucker rod respectively; Be fixed with center-pole 3 in the said top connection 1; Said center-pole 3 outsides are provided with the pressure measuring cylinder 4 that is tightly connected with it, fill hydraulic oil in the said pressure measuring cylinder 4, and said pressure measuring cylinder 4 one ends are fixedly connected with lower contact 2; Be provided with the daming piston 5 hinged in the said pressure measuring cylinder 4, be provided with damping spring 6 in the blind end of said pressure measuring cylinder 4 with said center-pole 3.Through splendid attire hydraulic oil in pressure measuring cylinder 4; And the daming piston 5 hinged with center-pole 3 is set in pressure measuring cylinder 4, and can alleviate sucker rod and directly collide, play the bumper and absorbing shock effect; Thereby prevent that sucker rod from receiving axial fluctuating load, prolonged the application life of sucker rod; Through daming piston 5 and center-pole 3 is hinged, the pressure that center-pole is born circumferentially disperses to daming piston 5, reduces the bad moment of torsion of sucker rod, alleviates radial stresses, has prolonged the application life of sucker rod; And through damping spring 6 is set in the blind end of pressure measuring cylinder 4; Can further play the bumper and absorbing shock effect; Slow down the sucker rod downstream rate, avoid sucker rod to bend, and further improved damping effect; Thereby reduced the fracture and the dropout phenomenon of sucker rod, prolonged the application life of sucker rod.
The openend of said pressure measuring cylinder 4 is provided with O-ring seal 7, and the inboard of said O-ring seal 7 contacts with center-pole 3.Be provided with through sealing, prevent the hydraulic oil leakage.
The free end of said damping spring 6 is provided with and daming piston 5 contacted back-up rings 8.Can better subdue stress through back-up ring 8, play better cushioning effect.
The utility model is simple in structure, and is reasonable in design, has elastic buffer, can subdue axially and radial stresses, thereby prevent the sucker rod fatigue fracture, alleviated workman's work load.
Claims (3)
1. sucker rod damper; Comprise the top connection and the lower contact that are connected with sucker rod respectively, it is characterized in that: be fixed with center-pole in the said top connection, said center-pole outside is provided with the pressure measuring cylinder that is tightly connected with it; Fill hydraulic oil in the said pressure measuring cylinder; Said pressure measuring cylinder one end is fixedly connected with lower contact, is provided with the daming piston hinged with said center-pole in the said pressure measuring cylinder, is provided with damping spring in the blind end of said pressure measuring cylinder.
2. a kind of sucker rod damper according to claim 1, it is characterized in that: the openend of said pressure measuring cylinder is provided with O-ring seal, and the inboard of said O-ring seal contacts with center-pole.
3. a kind of sucker rod damper according to claim 1 is characterized in that: the free end of said damping spring is provided with and the contacted back-up ring of daming piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205231803U CN202348146U (en) | 2011-12-06 | 2011-12-06 | Shock absorber for sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205231803U CN202348146U (en) | 2011-12-06 | 2011-12-06 | Shock absorber for sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348146U true CN202348146U (en) | 2012-07-25 |
Family
ID=46537155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205231803U Expired - Fee Related CN202348146U (en) | 2011-12-06 | 2011-12-06 | Shock absorber for sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348146U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386729A (en) * | 2015-11-03 | 2016-03-09 | 河北博路天宝石油设备制造有限公司 | Sucker rod shock absorber with adjustable damping value |
| CN110359857A (en) * | 2018-01-29 | 2019-10-22 | 西南石油大学 | It is a kind of for mitigating the spring damper of underground sucker rod extensional vibration |
-
2011
- 2011-12-06 CN CN2011205231803U patent/CN202348146U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386729A (en) * | 2015-11-03 | 2016-03-09 | 河北博路天宝石油设备制造有限公司 | Sucker rod shock absorber with adjustable damping value |
| CN110359857A (en) * | 2018-01-29 | 2019-10-22 | 西南石油大学 | It is a kind of for mitigating the spring damper of underground sucker rod extensional vibration |
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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: 20120725 Termination date: 20121206 |