CN104896218A - Bimetal composite pipe end connecting device - Google Patents
Bimetal composite pipe end connecting device Download PDFInfo
- Publication number
- CN104896218A CN104896218A CN201510256945.4A CN201510256945A CN104896218A CN 104896218 A CN104896218 A CN 104896218A CN 201510256945 A CN201510256945 A CN 201510256945A CN 104896218 A CN104896218 A CN 104896218A
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- CN
- China
- Prior art keywords
- pipe
- base tube
- composite bimetal
- composite pipe
- composite
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/182—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for screw-threaded joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a bimetal composite pipe end connecting device which comprises a connecting sleeve and a sealing ring. The inner diameter of the connecting sleeve is matched with the outer diameter of a base pipe of a bimetal composite pipe, the sealing ring is connected in the internal middle of the connecting sleeve, conical surfaces are arranged at two ends of the sealing ring, the shape of each conical surface is consistent with that of a surfacing joint formed by welding a liner layer of the bimetal composite pipe with the base pipe, threads matched with the outer wall of the base pipe of the bimetal composite pipe are arranged at joints of the inner walls of two ends of the connecting sleeve and the base pipe of the bimetal composite pipe, the connecting sleeve is connected with the composite pipe in a threaded manner, so that the surfacing joint at a pipe end and the conical surfaces of the sealing ring are sealed, the liner layer of the composite pipe closely contacts with the alloy sealing ring, corrosive oil gas cannot contact with the base pipe, anti-corrosion requirements are met, and the connecting device has high strength and has the advantages of simple structure, convenience in mounting, high reliability and low cost.
Description
Technical field
The present invention relates to composite bimetal pipe technical field, be specifically related to a kind of composite bimetal pipe pipe end connection set.
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 object of the present invention is to provide a kind of composite bimetal pipe pipe end connection set, 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, technological scheme of the present invention is:
A kind of composite bimetal pipe pipe end connection set, 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.
Composite bimetal pipe pipe end connected system provided by the invention 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 invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
The invention provides a kind of composite bimetal pipe pipe end connection set as shown in drawings, 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 invention is:
Linkage structure of the present invention 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 connection set, 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 connection set 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 connection set 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 connection set 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510256945.4A CN104896218A (en) | 2015-05-19 | 2015-05-19 | Bimetal composite pipe end connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510256945.4A CN104896218A (en) | 2015-05-19 | 2015-05-19 | Bimetal composite pipe end connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104896218A true CN104896218A (en) | 2015-09-09 |
Family
ID=54029063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510256945.4A Pending CN104896218A (en) | 2015-05-19 | 2015-05-19 | Bimetal composite pipe end connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104896218A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679325A (en) * | 2018-07-26 | 2018-10-19 | 杨明昆 | A kind of high pressure resistant reinforced thermoplastics multiple tube and its processing technology |
| CN110998159A (en) * | 2017-08-04 | 2020-04-10 | 睦圣均 | Movable joint |
| CN112049580A (en) * | 2020-10-16 | 2020-12-08 | 西安德信成科技有限责任公司 | Connecting joint of bimetal composite oil pipe |
| CN113007454A (en) * | 2019-12-19 | 2021-06-22 | 华庚新材料科技(嘉兴)有限公司 | Pipe and method of connecting the same |
| CN117108834A (en) * | 2023-10-24 | 2023-11-24 | 延安嘉盛石油机械有限责任公司 | Corrosion-resistant assembly and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6273474B1 (en) * | 1998-02-25 | 2001-08-14 | Grant Prideco, L.P. | Threaded connection for internally clad pipe |
| US7107662B1 (en) * | 2000-12-21 | 2006-09-19 | Gene W. Arant, as Trustee | Method and a coupler for joining two steel pipes |
| CN101328996A (en) * | 2008-08-05 | 2008-12-24 | 赵建军 | Stainless steel inner lining tube and coupling assembly and manufacturing method thereof |
| CN101836023A (en) * | 2007-10-25 | 2010-09-15 | 布廷恩两合公司 | The connected system that is used for the pipe of double-walled |
| CN102829270A (en) * | 2012-09-13 | 2012-12-19 | 中国石油天然气股份有限公司 | Method for connecting small-caliber metal pipelines |
| CN204647602U (en) * | 2015-05-19 | 2015-09-16 | 中国重型机械研究院股份公司 | A kind of composite bimetal pipe pipe end linkage structure |
-
2015
- 2015-05-19 CN CN201510256945.4A patent/CN104896218A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6273474B1 (en) * | 1998-02-25 | 2001-08-14 | Grant Prideco, L.P. | Threaded connection for internally clad pipe |
| US7107662B1 (en) * | 2000-12-21 | 2006-09-19 | Gene W. Arant, as Trustee | Method and a coupler for joining two steel pipes |
| CN101836023A (en) * | 2007-10-25 | 2010-09-15 | 布廷恩两合公司 | The connected system that is used for the pipe of double-walled |
| CN101328996A (en) * | 2008-08-05 | 2008-12-24 | 赵建军 | Stainless steel inner lining tube and coupling assembly and manufacturing method thereof |
| CN102829270A (en) * | 2012-09-13 | 2012-12-19 | 中国石油天然气股份有限公司 | Method for connecting small-caliber metal pipelines |
| CN204647602U (en) * | 2015-05-19 | 2015-09-16 | 中国重型机械研究院股份公司 | A kind of composite bimetal pipe pipe end linkage structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110998159A (en) * | 2017-08-04 | 2020-04-10 | 睦圣均 | Movable joint |
| CN110998159B (en) * | 2017-08-04 | 2021-09-10 | 睦圣均 | Movable joint |
| CN108679325A (en) * | 2018-07-26 | 2018-10-19 | 杨明昆 | A kind of high pressure resistant reinforced thermoplastics multiple tube and its processing technology |
| CN113007454A (en) * | 2019-12-19 | 2021-06-22 | 华庚新材料科技(嘉兴)有限公司 | Pipe and method of connecting the same |
| CN112049580A (en) * | 2020-10-16 | 2020-12-08 | 西安德信成科技有限责任公司 | Connecting joint of bimetal composite oil pipe |
| CN117108834A (en) * | 2023-10-24 | 2023-11-24 | 延安嘉盛石油机械有限责任公司 | Corrosion-resistant assembly and preparation method thereof |
| CN117108834B (en) * | 2023-10-24 | 2024-01-02 | 延安嘉盛石油机械有限责任公司 | Corrosion-resistant assembly and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20150909 |