CN2695604Y - Sucker rod coupling wrapped with special engineering playstic layer - Google Patents
Sucker rod coupling wrapped with special engineering playstic layer Download PDFInfo
- Publication number
- CN2695604Y CN2695604Y CN 200420039880 CN200420039880U CN2695604Y CN 2695604 Y CN2695604 Y CN 2695604Y CN 200420039880 CN200420039880 CN 200420039880 CN 200420039880 U CN200420039880 U CN 200420039880U CN 2695604 Y CN2695604 Y CN 2695604Y
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- CN
- China
- Prior art keywords
- layer
- special engineering
- coupling
- sucker rod
- special
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- 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 sucker rod coupling wrapped with special engineering plastic layer which is in the shape of tube; the pipe wall thereof is a composite layer, the inner layer is a metallic layer, and the external layer is a special engineering plastic layer; the pipe wall of the sucker rod coupling is made into a composite layer so that the high-wearing property and the high anti-corrosive property are provided under the condition that the connectivity and connection strength are unaffected; the time of wearing between the coupling and the sucker pipe can be extended, and in the meanwhile, the corrosion of chlorine gas, etc, or chemical reagents from the oil well can also be prevented; thus, the service life of the coupling is greatly improved, and the service life is at least two times as long as the original coupling and centralizer; thus, the maintaining amount is reduced and the production efficiency is enhanced.
Description
Technical field
The utility model relates to the pumping unit that use in the oil field, is a kind of special engineered bag rod collar of moulding that connects sucker rod.
Background technology
The sucker rod that uses on the pumping unit is being connected by rod collar of being made of metal, because the length of sucker rod is generally at several kms, so cannot say for sure to demonstrate,prove the up rightness of sucker rod in oil pick-up tube, when sucker rod bends, very easily make the box cupling place produce wearing and tearing, thereby cause maintenance capacity to strengthen, production efficiency is low, cost of production increase etc., for this reason, those skilled in the art design centralizer to solve rod collar problem easy to wear.Though these centralizers have some advantage, but still need frequent repair and replacement, it is very little to enhance productivity.In addition, all rod collars or oil pumping centralizer all are that metal is made at present, and it is corrosion-resistant and anti-wear performance is all relatively poor.
Summary of the invention
The purpose of this utility model is, a kind of special engineered bag rod collar of moulding is provided, and it can make rod collar have higher abrasion resistance and corrosion resistance, and be enhanced about more than once than existing rod collar and oil pumping rod centering device its application life.
The utility model provides following technical scheme in order to finish goal of the invention: it in a tubular form, its tube wall is a composite bed, internal layer is a metal level, skin is the special engineering plastics layer.The end wall thickness of special engineering plastics layer is greater than the wall thickness of middle part.The wall thickness of the two-end part of special engineering plastics layer is greater than the wall thickness of middle part.The external diameter termination of special engineering plastics layer is the right angle.
Advantage of the present utility model is: the rod collar tube wall is made composite bed, make under its connectivity, the impregnable prerequisite of bonding strength and also have high-wearing feature and high anti-corrosive properties, can prolong the wearing-in period between box cupling and the oil pick-up tube, simultaneously, can also prevent the corrosion of gas such as chlorine in the oil well or chemical agent, thereby increased substantially the application life of box cupling, be enhanced about more than once than former box cupling and centralizer at least, reduce maintenance capacity, improved production efficiency etc.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
The specific embodiment
The utility model is cylindrical, and 3 is holes among the figure, is used to connect sucker rod, and the tube wall of pipe is that composite bed constitutes, and internal layer is a metal level 2, and internal thread is set on it, and skin is a special engineering plastics layer 1.In order to increase the wearing-in period of outer end, make the wall thickness of the end wall thickness of special engineering plastics layer 1 greater than the middle part, the wall thickness of two-end part that perhaps makes special engineering plastics layer 1 is all greater than the wall thickness of middle part, and shown in figure, the inner end diameter of special engineering plastics layer 1 has an inclined-plane 4.Bad phenomenon such as sand are deposited in termination for fear of box cupling, are squared up in the external diameter termination of special engineering plastics layer 1.Special engineering plastics described in the utility model has more trade name, for example: PPS class, F class and PI class etc.
Claims (4)
1, the special engineered bag rod collar of moulding, it is characterized in that in a tubular form: its tube wall is a composite bed, and internal layer is metal level (2), and skin is special engineering plastics layer (1).
2, the special engineered bag rod collar of moulding according to claim 1, it is characterized in that: the end wall thickness of special engineering plastics layer (1) is greater than the wall thickness of middle part.
3, the special engineered bag rod collar of moulding according to claim 1, it is characterized in that: the wall thickness of the two-end part of special engineering plastics layer (1) is greater than the wall thickness of middle part.
4, the special engineered bag rod collar of moulding according to claim 1, it is characterized in that: the external diameter termination of special engineering plastics layer (1) is the right angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420039880 CN2695604Y (en) | 2004-04-23 | 2004-04-23 | Sucker rod coupling wrapped with special engineering playstic layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420039880 CN2695604Y (en) | 2004-04-23 | 2004-04-23 | Sucker rod coupling wrapped with special engineering playstic layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2695604Y true CN2695604Y (en) | 2005-04-27 |
Family
ID=34774061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420039880 Expired - Fee Related CN2695604Y (en) | 2004-04-23 | 2004-04-23 | Sucker rod coupling wrapped with special engineering playstic layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2695604Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671507B (en) * | 2009-09-29 | 2013-03-13 | 上海海隆赛能新材料有限公司 | Preparation and application of oil well pipe dedicated weather-proof and high temperature, high pressure and high impact resisting external protective material |
-
2004
- 2004-04-23 CN CN 200420039880 patent/CN2695604Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671507B (en) * | 2009-09-29 | 2013-03-13 | 上海海隆赛能新材料有限公司 | Preparation and application of oil well pipe dedicated weather-proof and high temperature, high pressure and high impact resisting external protective material |
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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: 20050427 Termination date: 20120423 |