CN207332784U - The special box cupling of inside lining anti-corrosive oil water well tube - Google Patents
The special box cupling of inside lining anti-corrosive oil water well tube Download PDFInfo
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- CN207332784U CN207332784U CN201721421703.7U CN201721421703U CN207332784U CN 207332784 U CN207332784 U CN 207332784U CN 201721421703 U CN201721421703 U CN 201721421703U CN 207332784 U CN207332784 U CN 207332784U
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- pipe
- plane
- box cupling
- flange
- oil
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model provides a kind of special box cupling of inside lining anti-corrosive oil water well tube, wherein the special box cupling of inside lining anti-corrosive oil water well tube, including oil pipe, pipe box cupling, the oil pipe end are provided with external screw thread, externally threaded end set has chamfering；The oil pipe inner tight is combined with internal lining pipe, the length of the internal lining pipe is more than the length of oil pipe, the end set of internal lining pipe has flange, the end of the flange is inclined-plane, the angle on the inclined-plane is 65 °, and the inclined-plane of the end of the externally threaded end-beveling and flange is on same inclined-plane；The pipe box cupling is provided at both ends with is embedded with sealing ring with the corresponding internal thread of external screw thread, pipe box cupling centre, and the inner side of sealing ring sets the corresponding inclined-plane in inclined-plane with the end of flange；Advantage is：The liner oil pipe extruded tube box cupling of both sides, sufficiently contacts at 65 ° of inclined-planes, reaches good sealing effect, solve the problems, such as that pipe collar is perishable well.
Description
Technical field
Liner oil pipe technical field is the utility model is related to, is connect more particularly, to a kind of inside lining anti-corrosive oil water well tube is special
Hoop.
Background technology
Oil, sleeve field in industrial oil well pipe is in use, often there is the problem of oil, casing fail because of corrosion to send out
It is raw, this is because conventional oil, casing against corrosion energy force difference.To prevent oil, casing corrosion, some units use stainless steel material
Oil, casing and box cupling, are so to solve etching problem, but cost is too high, does not meet the theory of cost efficiency；Also some units
Using stainless steel inner lining oil, casing, but the gap between tube body and liner cannot be closed, and inboard wall of tube body still can be corroded, especially
Its tube body screw thread and box cupling are easily corroded.
The content of the invention
The purpose of this utility model is that to solve the deficiencies in the prior art, and it is special to provide a kind of inside lining anti-corrosive oil water well tube
Use box cupling.
The new technical solution of the utility model is：The special box cupling of inside lining anti-corrosive oil water well tube, including oil pipe, pipe box cupling, institute
The oil pipe end stated is provided with external screw thread, and externally threaded end set has chamfering；The oil pipe inner tight is combined with liner
Pipe, the length of the internal lining pipe are more than the length of oil pipe, and the end set of internal lining pipe has flange, and the end of the flange is
Inclined-plane, the angle on the inclined-plane is 65 °, and the inclined-plane of the end of the externally threaded end-beveling and flange is same oblique
On face；The pipe box cupling is provided at both ends with is embedded with sealing ring, sealing ring with the corresponding internal thread of external screw thread, pipe box cupling centre
Inner side the corresponding inclined-plane in inclined-plane with the end of flange is set.
The internal lining pipe and sealing ring using polyethylene, polybutene, modified polypropene, chliorinated polyvinyl chloride, polypropylene,
Polyurethane, polyamide or Kynoar.
The beneficial effects of the utility model are：By setting 65 ° of inclined-plane, the liner oil pipe extruded tube box cupling of both sides,
Sufficiently contacted at inclined-plane, reach good sealing effect, solve the problems, such as that pipe collar is perishable.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Wherein：1 is oil pipe, and 2 be pipe box cupling, and 3 be internal lining pipe, and 4 be flange, and 5 be external screw thread, and 6 be inclined-plane, and 7 be internal thread,
8 be sealing ring.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
The special box cupling of inside lining anti-corrosive oil water well tube, including oil pipe 1, pipe box cupling 2,1 end set of oil pipe have outer spiral shell
Line 5, the end set of external screw thread 5 have chamfering；1 inner tight of oil pipe is combined with internal lining pipe 3, the internal lining pipe 3
Length is more than the length of oil pipe 1, and the end set of internal lining pipe 3 has flange 4, and the end of the flange 4 is inclined-plane 6, described
The angle on inclined-plane 6 is 65 °, and the inclined-plane 6 of the end-beveling of the external screw thread 5 and the end of flange 4 is on same inclined-plane；Institute
The pipe box cupling 2 stated is provided at both ends with internal thread 7 corresponding with external screw thread 5, and sealing ring 8, sealing ring 8 are embedded among pipe box cupling 2
Inner side 6 corresponding inclined-plane of inclined-plane with the end of flange 4 is set.
The internal lining pipe 3 and sealing ring 8 are using polyethylene, polybutene, modified polypropene, chliorinated polyvinyl chloride, poly- third
Alkene, polyurethane, polyamide or Kynoar.
Claims (2)
1. the special box cupling of inside lining anti-corrosive oil water well tube, including oil pipe（1）, pipe box cupling（2）, it is characterised in that：The oil pipe（1）
End set has external screw thread（5）, external screw thread（5）End set have chamfering；The oil pipe（1）Inner tight is combined with liner
Pipe（3）, the internal lining pipe（3）Length be more than oil pipe（1）Length, internal lining pipe（3）End set have flange（4）, institute
The flange stated（4）End be inclined-plane（6）, the inclined-plane（6）Angle be 65 °, the external screw thread（5）End-beveling
With flange（4）End inclined-plane（6）On same inclined-plane；The pipe box cupling（2）It is provided at both ends with and external screw thread（5）Phase
Corresponding internal thread（7）, pipe box cupling（2）Centre is embedded with sealing ring（8）, sealing ring（8）Inner side set and flange（4）End
Inclined-plane（6）Corresponding inclined-plane.
2. the special box cupling of inside lining anti-corrosive oil water well tube according to claim 1, it is characterised in that：The internal lining pipe（3）
And sealing ring（8）Using polyethylene, polybutene, modified polypropene, chliorinated polyvinyl chloride, polypropylene, polyurethane, polyamide or poly-
Vinylidene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721421703.7U CN207332784U (en) | 2017-10-31 | 2017-10-31 | The special box cupling of inside lining anti-corrosive oil water well tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721421703.7U CN207332784U (en) | 2017-10-31 | 2017-10-31 | The special box cupling of inside lining anti-corrosive oil water well tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207332784U true CN207332784U (en) | 2018-05-08 |
Family
ID=62364322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721421703.7U Active CN207332784U (en) | 2017-10-31 | 2017-10-31 | The special box cupling of inside lining anti-corrosive oil water well tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207332784U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273653A (en) * | 2019-07-17 | 2019-09-24 | 山东墨龙石油机械股份有限公司 | Bimetallic is anti-corrosion tubing and casing and its attachment device |
-
2017
- 2017-10-31 CN CN201721421703.7U patent/CN207332784U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273653A (en) * | 2019-07-17 | 2019-09-24 | 山东墨龙石油机械股份有限公司 | Bimetallic is anti-corrosion tubing and casing and its attachment device |
| CN110273653B (en) * | 2019-07-17 | 2024-07-02 | 山东墨龙石油机械股份有限公司 | Bimetal corrosion-resistant oil sleeve and connecting device thereof |
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