CN208268577U - A kind of special direct linkage type internal and external threads sealing structure - Google Patents
A kind of special direct linkage type internal and external threads sealing structure Download PDFInfo
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- CN208268577U CN208268577U CN201820489974.4U CN201820489974U CN208268577U CN 208268577 U CN208268577 U CN 208268577U CN 201820489974 U CN201820489974 U CN 201820489974U CN 208268577 U CN208268577 U CN 208268577U
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- pipe
- screw thread
- connector
- direct linkage
- linkage type
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Abstract
The utility model discloses a kind of special direct linkage type internal and external threads sealing structures, including structural body, first pipe, connector, external screw thread, internal screw thread, second pipe, second pipe outer layer, erosion resistant coating and decompression layer.The beneficial effects of the utility model are: sealing structure connection is compact, using simple, sealing structure is direct linkage type structure, it is easy to connect, leakproofness is preferable, second pipe local array is provided with internal screw thread, connector outboard array is provided with external screw thread, external screw thread is stepped construction, internal screw thread and external screw thread are symmetrical structure, it can make first pipe and second pipe firm and reliable connection, leakproofness is preferable, the diameter of connector is less than the diameter of first pipe, when first pipe is connect with second pipe, structure can be inserted into inside second pipe, connector and second pipe junction are provided with gasket, improve the sealing effect of structural body, decompression layer can prevent internal pipe pressure excessively high, cause booster, stability is strong when work.
Description
Technical field
The utility model relates to a kind of sealing structure, specially a kind of special direct linkage type internal and external threads sealing structure belongs to
Sealing device field.
Background technique
Petroleum, natural gas storing hundreds of to thousands of rice below earth's surface, use during drilling oil well pipe as oil recovery,
The sealed passage of gas production, oil well pipe are that single oil well pipe is formed by connecting by dedicated jointing, long up to thousands of rice, hundreds of
Ton weight, nipple is divided to coupling type and without two kind of coupling type direct linkage type, wherein without coupling type direct linkage type screw thread due to connector outer diameter
The design feature less than normal for increasing radial clearance, is mainly used in that wellbore is less than normal, window sidetracking, Jiu Jing of down-hole operation relative difficulty
Under the special oil field operating conditions such as reparation, be conducive to the underground work such as go into the well and cement the well.
At present internal and external threads sealing structure come with some shortcomings place, sealing structure be not direct linkage type, connection not side
Just, internal screw thread and external screw thread are not symmetrical stepped arrangements, are not connected firmly, leakproofness is poor, and second pipe is not cladding
Formula structure does not have anti-corrosion, and antihypertensive effect be easy to cause corrosive pipeline and booster, not very practical.
Utility model content
The purpose of this utility model is that provide a kind of special direct linkage type internal and external threads to solve the above-mentioned problems close
Seal structure.
The utility model achieves the above object through the following technical schemes: a kind of special direct linkage type internal and external threads sealing knot
Structure, including structural body, first pipe, connector, external screw thread, internal screw thread, second pipe, second pipe outer layer, erosion resistant coating and subtract
Pressurized layer；Described structural body one end is provided with first pipe, and the diameter of the first pipe is greater than the diameter of connector, and described the
One pipeline one end is connected with connector, and the connector and second pipe junction are provided with gasket, the connector and described the
One pipeline is cylindrical hollow formula structure, and the connector outboard array is provided with external screw thread, and the external screw thread is circular ring shape knot
Structure, the first pipe is corresponding to be provided with second pipe, and the second pipe is multi-layer structure, in the second pipe
Array is provided with internal screw thread on wall, and the internal screw thread and external screw thread are that symmetrical step type is arranged, on the inside of the second pipe
It is provided with second pipe outer layer, erosion resistant coating is provided on the inside of the second pipe outer layer, is provided with decompression on the inside of the erosion resistant coating
Layer, and it is connected with pressure releaser on the outside of the decompression layer, the decompression layer can prevent second pipe internal pressure excessive.
Further, sealing structure is made to connect simple and flexible in order to reach, the structural body is direct linkage type structure.
Further, it can firmly be covered inside second pipe to reach connector, the diameter of the first pipe is big
In the diameter of connector.
Further, it is mutually blocked by internal screw thread with external screw thread to reach, improves fastness, the internal screw thread and outer
Screw thread is symmetrical stepped arrangement.
Further, make pipeline that there is anti-corrosion, decompression multiple functions to reach, prevent corrosive pipeline, described the
Two pipelines are multi-layer structure.
Further, in order to reach the leakproofness for improving connector and pipeline junction, the connector is connect with second pipe
Place is provided with gasket.
Further, it prevents internal pipe pressure is excessively high from causing booster to reach, is connected with pressure on the outside of the decompression layer
Power release.
The beneficial effects of the utility model are: sealing structure connection is compact, using simple, sealing structure is direct linkage type knot
Structure, easy to connect, leakproofness is preferable, and second pipe local array is provided with internal screw thread, and connector outboard array is provided with external screw thread,
External screw thread is stepped construction, and internal screw thread and external screw thread are symmetrical structure, and first pipe can be made to connect jail with second pipe
Gu reliable, leakproofness is preferable, and the diameter that the diameter of connector is less than first pipe can when first pipe is connect with second pipe
Structure is inserted into inside second pipe, connector and second pipe junction are provided with gasket, improve the sealing effect of structural body
Fruit, decompression layer can prevent internal pipe pressure excessively high, cause booster, and stability is strong when work.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the utility model second pipe sectional view；
Fig. 3 is the utility model second pipe multilayer structure schematic diagram；
In figure: 1, structural body, 2, first pipe, 3, connector, 4, external screw thread, 5, internal screw thread, 6, second pipe, 7, second
Pipeline outer-layer, 8, erosion resistant coating, 9, decompression layer.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1-3, a kind of special direct linkage type internal and external threads sealing structure, including structural body 1, first pipe 2, connect
First 3, external screw thread 4, internal screw thread 5, second pipe 6, second pipe outer layer 7, erosion resistant coating 8 and decompression layer 9；The structural body 1 one
End is provided with first pipe 2, and the diameter of the first pipe 2 is greater than the diameter of connector 3,2 one end of first pipe connection
There is connector 3, and the connector 3 and 6 junction of second pipe are provided with gasket, the connector 3 is with the first pipe 2
Cylindrical hollow formula structure, 3 outboard array of connector are provided with external screw thread 4, and the external screw thread 4 is cirque structure, described
First pipe 2 is corresponding to be provided with second pipe 6, and the second pipe 6 is multi-layer structure, 6 inner wall of second pipe
Upper array is provided with internal screw thread 5, and the internal screw thread 5 and external screw thread 4 are that symmetrical step type is arranged, in the second pipe 6
Side is provided with second pipe outer layer 7, and erosion resistant coating 8 is provided on the inside of the second pipe outer layer 7, is arranged on the inside of the erosion resistant coating 8
There is decompression layer 9, and be connected with pressure releaser on the outside of the decompression layer 9, the decompression layer 9 can prevent inside second pipe 6
Pressure is excessive.
A kind of technical optimization scheme as the utility model: the structural body 1 is direct linkage type structure；First pipe
The diameter in road 2 is greater than the diameter of connector 3；The internal screw thread 5 is symmetrical stepped arrangement with external screw thread 4；The second pipe 6
For multi-layer structure；The connector 3 is provided with gasket with 6 junction of second pipe；Pressure is connected on the outside of the decompression layer 9
Release.
When the utility model is used, sealing structure is direct linkage type structure first, easy to connect, leakproofness is preferable, second
Pipeline local array is provided with internal screw thread, and connector outboard array is provided with external screw thread, and external screw thread is stepped construction；Secondly spiral shell in
Line and external screw thread are symmetrical structure, can make first pipe and second pipe firm and reliable connection, leakproofness is preferable, connector
Diameter is less than the diameter of first pipe, and when first pipe is connect with second pipe, structure can be inserted into inside second pipe；Most
Rear joint and second pipe junction are provided with gasket, improve the sealing effect of structural body, and decompression layer can prevent pipeline
Internal pressure is excessively high, causes booster, and safety is poor.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of special direct linkage type internal and external threads sealing structure, including structural body (1), first pipe (2), connector (3), outer spiral shell
Line (4), internal screw thread (5), second pipe (6), second pipe outer layer (7), erosion resistant coating (8) and decompression layer (9)；It is characterized by:
Described structural body (1) one end is provided with first pipe (2), and described first pipe (2) one end is connected with connector (3), described to connect
Head (3) and the first pipe (2) are cylindrical hollow formula structure, and connector (3) outboard array is provided with external screw thread
(4), the external screw thread (4) is cirque structure, and the first pipe (2) is corresponding to be provided with second pipe (6), described second
Array is provided with internal screw thread (5) on pipeline (6) inner wall, is provided with second pipe outer layer (7), institute on the inside of the second pipe (6)
It states and is provided with erosion resistant coating (8) on the inside of second pipe outer layer (7), decompression layer (9) is provided on the inside of the erosion resistant coating (8), it is described to subtract
Pressurized layer (9) can prevent second pipe (6) internal pressure excessive.
2. a kind of special direct linkage type internal and external threads sealing structure according to claim 1, it is characterised in that: the structure sheet
Body (1) is direct linkage type structure.
3. a kind of special direct linkage type internal and external threads sealing structure according to claim 1, it is characterised in that: first pipe
The diameter in road (2) is greater than the diameter of connector (3).
4. a kind of special direct linkage type internal and external threads sealing structure according to claim 1, it is characterised in that: the internal screw thread
It (5) is symmetrical stepped arrangement with external screw thread (4).
5. a kind of special direct linkage type internal and external threads sealing structure according to claim 1, it is characterised in that: second pipe
Road (6) is multi-layer structure.
6. a kind of special direct linkage type internal and external threads sealing structure according to claim 1, it is characterised in that: the connector
(3) second pipe (6) junction is provided with gasket.
7. a kind of special direct linkage type internal and external threads sealing structure according to claim 1, it is characterised in that: the decompression layer
(9) outside is connected with pressure releaser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820489974.4U CN208268577U (en) | 2018-04-09 | 2018-04-09 | A kind of special direct linkage type internal and external threads sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820489974.4U CN208268577U (en) | 2018-04-09 | 2018-04-09 | A kind of special direct linkage type internal and external threads sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208268577U true CN208268577U (en) | 2018-12-21 |
Family
ID=64676880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820489974.4U Active CN208268577U (en) | 2018-04-09 | 2018-04-09 | A kind of special direct linkage type internal and external threads sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208268577U (en) |
-
2018
- 2018-04-09 CN CN201820489974.4U patent/CN208268577U/en active Active
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