CN204647602U - A kind of composite bimetal pipe pipe end linkage structure - Google Patents

A kind of composite bimetal pipe pipe end linkage structure Download PDF

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Publication number
CN204647602U
CN204647602U CN201520324677.0U CN201520324677U CN204647602U CN 204647602 U CN204647602 U CN 204647602U CN 201520324677 U CN201520324677 U CN 201520324677U CN 204647602 U CN204647602 U CN 204647602U
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China
Prior art keywords
pipe
base tube
composite bimetal
composite
seal ring
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Active
Application number
CN201520324677.0U
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Chinese (zh)
Inventor
马海宽
刘继高
李培力
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China National Heavy Machinery Research Institute Co Ltd
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China National Heavy Machinery Research Institute Co Ltd
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Abstract

The utility model relates to a kind of composite bimetal pipe pipe end linkage structure, comprises the coupling sleeve that the base tube external diameter of internal diameter and composite bimetal pipe is suitable, is connected to the seal ring of coupling sleeve bosom position; The two ends of described seal ring are the conical surface, and the shape of this conical surface is consistent with the shape of the heap soldered splice that the inside liner of welding composite bimetal pipe becomes with base tube; The base tube joint of described coupling sleeve two ends inwall and composite bimetal pipe is provided with the screw thread suitable with the base tube outer wall of composite bimetal pipe; Connecting sleeve and composite pipe are connected by pipe thread makes pipe end pile soldered splice and seal ring carries out conical surface seal, ensure that composite pipe lining layer and alloy seal ring close contact, Corrosive Oil & Gas Transmission cannot be contacted with base tube, reach corrosion-resistant requirement, connected system has again higher intensity simultaneously, has the advantage that structure is simple, easy for installation, reliability is high, cost is low.

Description

A kind of composite bimetal pipe pipe end linkage structure
Technical field
The utility model relates to composite bimetal pipe technical field, is specifically related to a kind of composite bimetal pipe pipe end linkage structure.
Background technique
In recent years along with expanding economy, energy demand sharp increase, international, domestic all in the dynamics strengthening recover petroleum, rock gas.Pipe-line obtains develop rapidly as a kind of economy of oil and natural gas, long distance delivery instrument safely, uninterruptedly.Traditional tubing is not suitable for the conveying of high corrosion oil gas gradually, and adopts corrosion resisting alloy cost intensive, and therefore composite bimetal pipe arises at the historic moment.Composite bimetal pipe is made up of the metal tube of two kinds of unlike materials: base tube is high strength carbon steel tubing, inside liner is corrosion resistance alloy, formed by various distortion and interconnection technique between tube layer and combine closely, tubing had both had good intensity and corrosion resistance, and cost is low, obtain the extensive accreditation of domestic and international market, development rapidly.In composite bimetal pipe application process, composite bimetal pipe pipe end connects very important, should ensure that connection part has higher intensity, ensure that there is antiseptic property again, connection part can not occur that gap makes Corrosive Oil & Gas Transmission contact with base tube, prevents because pipe end connection part occurs that corrosion causes conveyance conduit to leak.
At present, seldom application non-corrosive material is as multiunit tube joint, because it can not ensure the requirement of strength of joint.In order to ensure that multiunit tube joint place has higher intensity and has again good antiseptic property, usually adopt high-strength stainless steel as jointing, cost is very expensive, is not suitable for industrial mass application.
Summary of the invention
In order to overcome above-mentioned prior art Problems existing, the purpose of this utility model is to provide a kind of composite bimetal pipe pipe end linkage structure, to overcome the defect that existing composite pipe pipe end jointing involves great expense; It has good intensity, can ensure that again there is good antiseptic property, by screw thread, composite pipe base tube is connected, inner stainless steel and the inside liner of composite pipe are combined closely, ensure that Corrosive Oil & Gas Transmission cannot contact with base tube, reach corrosion-resistant requirement, there is the advantage that structure is simple, easy for installation, reliability is high, cost is low.
In order to achieve the above object, the technical solution of the utility model is:
A kind of composite bimetal pipe pipe end linkage structure, comprises the coupling sleeve 6 that base tube 3 external diameter of internal diameter and composite bimetal pipe 1 is suitable, is connected to the seal ring 5 of coupling sleeve 6 bosom position; The two ends of described seal ring 5 are the conical surface, and the shape of this conical surface is consistent with the shape of the heap soldered splice 4 that inside liner 2 and the base tube 3 of welding composite bimetal pipe 1 are formed; Base tube 3 joint of described coupling sleeve 6 two ends inwall and composite bimetal pipe 1 is provided with the screw thread suitable with base tube 3 outer wall of composite bimetal pipe 1.
Described seal ring 5 adopts the anti-corrosion material identical with the inside liner 2 of metal composite pipe 1.
Described coupling sleeve 6 adopts the material identical or close with the base tube 3 of composite bimetal pipe 1.
Described base tube 3 is Ordinary Steel pipe, and inside liner 2 material is Stainless Steel Alloy, and described inside liner 2 fits tightly with base tube 3.
The composite bimetal pipe pipe end connected system that the utility model provides is by carrying out seamless link with the seal ring of inside lining anti-corrosive layer same material by two composite pipe lining anticorrosive coats, ensure that Corrosive Oil & Gas Transmission only contacts with anti-corrosion layer, pipe end is provided with good corrosion resistant performance; Meanwhile, coupling sleeve and two ends composite pipe are threaded connection, and ensure that the high strength of joint.Seal ring is stuck in the middle of coupling sleeve, is convenient to as installed.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The utility model provides a kind of composite bimetal pipe pipe end linkage structure as shown in drawings, and concrete structure is: comprise coupling sleeve 6 and composite bimetal pipe 1, and seal ring 5 arranges in coupling sleeve 6; Composite bimetal pipe 1 comprises inside liner 2, base tube 3 and pipe end heap soldered splice 4; Described inside liner 2 is formed for stainless steel material, fits tightly with base tube 3; Described base tube 3 is Ordinary Steel pipe, and there is pipe thread at its two ends; Described pipe end heap soldered splice 4 is formed by built-up welding form, is connected, by self conical surface and seal ring 5 conical surface close contact after installing, forms conical surface seal, prevent Corrosive Oil & Gas Transmission from being entered by this linking gap with inside liner 2 and base tube 3 by Type of Welding; Described coupling sleeve 6 is that the material identical or close with composite pipe base tube 3 is formed, and there is pipe thread at two ends, are threaded with composite pipe 1, ensures that outside has higher intensity.
Described seal ring 5 is stuck in the middle of coupling sleeve 6, just can not tighten after two ends composite pipe 1 is tightened and after its close contact again, convenient installation;
Working principle of the present utility model is:
The utility model linkage structure have employed the mode be threaded with conical surface seal, ensure that high strength and the antiseptic property of composite pipe connected system, has good cost performance.
See accompanying drawing, in composite bimetal pipe linkage structure, carry out built-up welding at composite pipe 1 inside liner 2 and base tube 3 end and form heap soldered splice 4, then two composite pipes 1 are screwed into from coupling sleeve 6 two ends, along with two ends composite pipe 1 progresses in coupling sleeve 6, the heap conical surface of soldered splice 4 and the taper-face contact of seal ring 5, until close contact reaches seal request.

Claims (4)

1. a composite bimetal pipe pipe end linkage structure, it is characterized in that: comprise the coupling sleeve (6) that base tube (3) external diameter of internal diameter and composite bimetal pipe (1) is suitable, be connected to the seal ring (5) of coupling sleeve (6) bosom position; The two ends of described seal ring (5) are the conical surface, and the shape of this conical surface is consistent with the shape of the heap soldered splice (4) that inside liner (2) and the base tube (3) of welding composite bimetal pipe (1) are formed; Base tube (3) joint of described coupling sleeve (6) two ends inwall and composite bimetal pipe (1) is provided with the screw thread suitable with the base tube of composite bimetal pipe (1) (3) outer wall.
2. a kind of composite bimetal pipe pipe end linkage structure according to claim 1, is characterized in that: described seal ring (5) adopts the anti-corrosion material identical with the inside liner (2) of metal composite pipe (1).
3. a kind of composite bimetal pipe pipe end linkage structure according to claim 1, is characterized in that: described coupling sleeve (6) adopts the material identical or close with the base tube (3) of composite bimetal pipe (1).
4. a kind of composite bimetal pipe pipe end linkage structure according to claim 1, it is characterized in that: described base tube (3) is Ordinary Steel pipe, inside liner (2) material is Stainless Steel Alloy, and described inside liner (2) and base tube (3) fit tightly.
CN201520324677.0U 2015-05-19 2015-05-19 A kind of composite bimetal pipe pipe end linkage structure Active CN204647602U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520324677.0U CN204647602U (en) 2015-05-19 2015-05-19 A kind of composite bimetal pipe pipe end linkage structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520324677.0U CN204647602U (en) 2015-05-19 2015-05-19 A kind of composite bimetal pipe pipe end linkage structure

Publications (1)

Publication Number Publication Date
CN204647602U true CN204647602U (en) 2015-09-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520324677.0U Active CN204647602U (en) 2015-05-19 2015-05-19 A kind of composite bimetal pipe pipe end linkage structure

Country Status (1)

Country Link
CN (1) CN204647602U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896218A (en) * 2015-05-19 2015-09-09 中国重型机械研究院股份公司 Bimetal composite pipe end connecting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896218A (en) * 2015-05-19 2015-09-09 中国重型机械研究院股份公司 Bimetal composite pipe end connecting device

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