CN114738563B - Insulation method and device for dissimilar metal submarine pipeline - Google Patents
Insulation method and device for dissimilar metal submarine pipeline Download PDFInfo
- Publication number
- CN114738563B CN114738563B CN202210434836.7A CN202210434836A CN114738563B CN 114738563 B CN114738563 B CN 114738563B CN 202210434836 A CN202210434836 A CN 202210434836A CN 114738563 B CN114738563 B CN 114738563B
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- Prior art keywords
- pipeline
- flange
- dissimilar metal
- lining
- insulating layer
- Prior art date
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- 239000002184 metal Substances 0.000 title claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 32
- 238000009413 insulation Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title abstract description 12
- 238000005260 corrosion Methods 0.000 claims abstract description 35
- 230000007797 corrosion Effects 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 20
- 239000010962 carbon steel Substances 0.000 claims abstract description 20
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 239000000565 sealant Substances 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 13
- 238000003466 welding Methods 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 7
- 239000003292 glue Substances 0.000 abstract description 4
- 239000012774 insulation material Substances 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013587 production medium Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- 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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
-
- 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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
-
- 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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
-
- 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
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/08—Coatings characterised by the materials used by metal
-
- 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
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
-
- 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
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
- F16L9/04—Reinforced pipes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to an insulating device and method for a dissimilar metal submarine pipeline, comprising the following steps: processing the insulating layer; forming a mounting groove on the inner wall surface of the second pipeline according to the size of the insulating layer; preparing a first flange and a second flange, connecting the first flange to one end of a first pipeline, and connecting the second flange to one end of a second pipeline; build-up welding a liner within the first pipe; placing a sealing ring in the end surface where the first flange and the second flange are connected, placing an insulating layer in the mounting groove, connecting the insulating layer with a first pipeline through sealing glue, and connecting the end part with the lining; and connecting the first flange and the second flange. The dissimilar metal submarine pipeline performs insulation treatment on the carbon steel pipe section and the corrosion-resistant alloy lined composite pipe section through the integrated insulation material, so that galvanic corrosion of the dissimilar metal submarine pipeline is prevented, and the purpose of the invention is achieved.
Description
Technical Field
The invention belongs to the technical field of ocean, and particularly relates to a dissimilar metal submarine pipeline and an insulation method thereof.
Background
In the corrosion-resistant design process of the submarine pipeline, the corrosion risks of all links in the service period of production logistics medium corrosiveness, paving, installing, pre-debugging, sealing and the like are comprehensively considered for material selection design, carbon steel can be adopted for submarine pipelines under the working condition of weak corrosiveness, a certain internal corrosion allowance is considered, and a carbon steel lining corrosion-resistant alloy pipe is required for the working condition of strong corrosiveness.
For submarine pipelines with longer mileage and strong corrosiveness, if the whole process adopts a carbon steel lining corrosion-resistant alloy pipe, the investment cost is higher, the sectional material selection design can be carried out according to the corrosiveness difference of media with different mileage, the pipe section with strong corrosiveness adopts the carbon steel lining corrosion-resistant alloy pipe, the rest pipe sections adopt carbon steel and internal corrosion allowance, the galvanic corrosion risk exists when the carbon steel pipe section and the lining corrosion-resistant alloy composite pipe section are connected, and the connecting part needs to be insulated so as to ensure the corrosion safety integrity of the submarine pipelines.
Disclosure of Invention
The invention aims to solve the problem of galvanic corrosion of connection between different metals of the existing dissimilar metal submarine pipeline. Another object of the invention is to provide a method of insulating a dissimilar metal subsea pipeline.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The invention provides an insulation method of a dissimilar metal submarine pipeline, which comprises the following steps:
processing the insulating layer;
preparing a first flange and a second flange, connecting the first flange to one end of a first pipeline, and connecting the second flange to one end of a second pipeline;
forming a mounting groove on the inner wall surface of the second pipeline according to the size of the insulating layer;
Build-up welding a liner within the first pipe;
placing a sealing ring in the end surface where the first flange and the second flange are connected, placing an insulating layer in the mounting groove, connecting the insulating layer with a first pipeline through sealing glue, and connecting the end part with the lining;
and connecting the first flange and the second flange.
Another aspect of the present invention provides an insulation apparatus for a dissimilar metal subsea pipeline, comprising:
The inner wall of the first pipeline is sleeved with a lining, the lining is overlaid on the inner wall of the first pipeline, the second pipeline and the lining are made of different metal materials, and an annular mounting groove is formed in the inner wall of the second pipeline;
the inner wall cover of second pipeline is equipped with the insulating layer of integration, the insulating tube is fixed to be inlayed and is established in the mounting groove, the terminal surface of the one end of insulating tube with inside lining fixed connection.
Further, the insulating layer is annular, the annular insulating layer is formed into an insulating tube, and the insulating tube is fixedly sleeved in the mounting groove of the second pipeline and fixedly connected with the inner wall of the second pipeline.
Further, the insulating pipe is connected with the inner wall of the second pipeline and the lining through sealant.
Further, the lining is made of corrosion-resistant alloy materials.
Further, the insulating tube is made of polytetrafluoroethylene.
Further, the thickness of the insulating tube is not less than 5mm, and the length of the insulating tube is not less than 10 times of the inner diameter of the insulating tube.
Further, the end part of the first pipeline is connected with a first flange, the end part of the second pipeline is provided with a second flange, and the first flange and the second flange are fixedly connected.
Further, sealing grooves are formed in the end faces of the first pipeline and the second pipeline, and sealing rings are arranged in the sealing grooves.
Further, the first pipeline and the second pipeline are carbon steel pipes.
Due to the adoption of the technical scheme, the invention has the following advantages:
The carbon steel pipe section and the corrosion-resistant alloy lined composite pipe section are insulated by the integrated insulating material, so that the occurrence of galvanic corrosion of the dissimilar metal submarine pipeline is prevented, and the aim of the invention is fulfilled. The invention adopts the integrated insulating material, avoids the risk of insulation failure caused by local damage possibly occurring when the insulating coating is adopted, and simultaneously adopts flange connection and sealing ring sealing, thereby avoiding the possibility of influence of direct welding connection on the insulating material and having high safety and reliability.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
Like parts are designated with like reference numerals throughout the drawings. In the drawings:
FIG. 1 is a cross-sectional view of a dissimilar metal subsea pipeline;
the various references in the drawings are as follows:
1-second pipeline, 2-first pipeline, 3-inside lining, 4-insulating layer, 5-sealant, 6-sealing ring, 7-second flange, 8-welding seam, 9-bolt, 10-first flange.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The embodiment of the invention provides an insulation device and an insulation method for a dissimilar metal submarine pipeline, wherein the insulation method comprises the following steps: processing the insulating layer; forming a mounting groove on the inner wall surface of the second pipeline according to the size of the insulating layer; preparing a first flange and a second flange, connecting the first flange to one end of a first pipeline, and connecting the second flange to one end of a second pipeline; build-up welding a liner within the first pipe; placing a sealing ring in the end surface where the first flange and the second flange are connected, placing an insulating layer in the mounting groove, connecting the insulating layer with a first pipeline through sealing glue, and connecting the end part with the lining; and connecting the first flange and the second flange to form the dissimilar metal submarine pipeline. Compared with the existing insulating coating insulating mode, the insulating coating insulating mode can avoid local damage, in addition, the insulating coating can be effectively prevented from being damaged in the modes of welding and the like through flange connection, finally, insulating treatment is carried out on the carbon steel pipe section and the lining corrosion-resistant alloy composite pipe section through the integrated insulating material, galvanic corrosion of dissimilar metal submarine pipelines is prevented, and the purpose of the insulating coating insulating method is achieved.
Example 1
As shown in fig. 1, the embodiment of the invention provides an insulating device for a dissimilar metal submarine pipeline, wherein one end of the insulating device is used for being connected with a carbon steel pipe, the other end of the insulating device is used for being connected with a carbon steel pipe sleeved with a lining, and galvanic corrosion between the carbon steel pipe and the lining due to different metal materials can be effectively solved through the connecting effect of the insulating device, so that the integral galvanic corrosion resistance of the dissimilar metal submarine pipeline is ensured.
The insulating device of the dissimilar metal submarine pipeline comprises a first pipeline 2 and a second pipeline 1, one ends of the first pipeline 2 and the second pipeline 1 are fixedly connected, a lining 3 is sleeved on the inner wall of the connecting end of the first pipeline 2, the lining 3 is overlaid on the inner wall of the first pipeline 2, and the second pipeline 1 and the lining 3 are made of different metal materials.
The inner wall of the second pipeline 1 is covered with an integrated insulating layer 4, the outer side wall of the insulating layer 4 is in contact connection with the inner wall of the second pipeline 1, and the end face of one end of the insulating layer 4 is in contact connection with the lining 3.
The first pipeline 2 and the second pipeline 1 are both carbon steel pipes, and the lining 3 is made of corrosion-resistant alloy materials. The insulating layer 4 is preferably made of polytetrafluoroethylene. The insulating layer 4 is fixedly connected with the second pipeline 1 and the lining 3, and the insulating treatment is carried out on the carbon steel pipe section and the first pipeline 2 lined with the corrosion-resistant alloy layer through the integrated insulating material, so that the occurrence of galvanic couple corrosion of the dissimilar metal submarine pipeline is prevented, and the corrosion safety integrity of the submarine pipeline is ensured.
The end of the first pipeline 2 is provided with a first flange 10, the end of the second pipeline 1 is provided with a second flange 7, and the first flange 10 and the second flange 7 are connected through bolts 9. Sealing grooves are formed in the end faces of the first pipeline 2 and the second pipeline 1, and sealing rings 6 are arranged in the sealing grooves. The flange connection and the sealing ring 6 are adopted for sealing, so that the possibility of influence of direct welding connection of two pipeline end faces on insulating materials is avoided, and the safety and reliability are high.
The inner lining 3 is preferably deposited on the inner wall of the first pipe 2.
The insulating layer 4 is preferably annular, and the annular insulating layer 4 is formed into an insulating tube, and the insulating tube is sleeved in the second pipeline 1 and is in contact with the inner wall of the second pipeline 1.
More preferably, in order to further improve the insulation effect, an annular mounting groove is formed in the inner wall of the second pipe 1, the insulation pipe is embedded in the mounting groove, and the end face of the one end of the insulation layer 4 is in contact connection with the liner 3.
The insulating layer 4 is connected with the inner wall of the second pipeline 1 and the lining 3 by adopting sealant 5. The sealant 5 should be insoluble in conventional oil-gas-water production medium after drying, and has good ageing resistance under the conditions of working condition temperature and pressure.
The thickness of the insulating layer 4 is preferably not less than 5mm.
The length of the insulating layer 4 is preferably not less than 10 times the inner diameter of the insulating tube.
The sealing ring 6 is preferably a fluorine rubber ring.
According to the flange-connected dissimilar metal submarine pipeline insulation device provided by the invention, after a first pipeline 2 is welded with a flange, an inner surface is overlaid with corrosion-resistant alloy; the integrated insulating layer is connected with the carbon steel pipe section and the inner lining corrosion-resistant alloy composite pipe section through sealant; the carbon steel pipe section is connected with the lining corrosion-resistant alloy composite pipe section through bolts 9, and sealing is achieved by the sealing ring 6.
The carbon steel pipe section and the lining 3 corrosion resistant alloy composite pipe section are insulated by the integrated insulating layer, so that galvanic corrosion of the dissimilar metal submarine pipeline is prevented, and the aim of the invention is fulfilled. The invention adopts the integrated insulating layer, avoids the risk of insulation failure caused by local damage possibly occurring when the insulating coating is adopted, and simultaneously adopts the flange connection and the sealing ring 6 for sealing, thereby avoiding the possibility of the influence of the welding connection on the insulating material and having high safety and reliability.
Example 2
The embodiment 2 of the invention provides an insulation method of a dissimilar metal submarine pipeline, which comprises the following steps:
Processing the insulating layer 4;
A mounting groove is formed on the inner wall surface of the second pipe 1 according to the size of the insulating layer 4;
A first flange 10 and a second flange 7 are prepared, the first flange 10 is welded to one end of the first pipe 2, and the second flange 7 is welded to one end of the second pipe 1.
A sealing ring 6 is placed in the end surface where the first flange 10 and the second flange 7 are connected, an insulating layer is placed in the mounting groove, and the insulating layer 4 is connected with the first pipeline 2 and the inner liner 3 through sealing glue;
and the first flange 10 and the second flange 7 are connected by bolts 9 to form the dissimilar metal submarine pipeline.
And welding the other end of the second pipeline 1 of the processed dissimilar metal submarine pipeline with a carbon steel pipe of the same material and the same size to form a special submarine pipeline, and paving after performing external anti-corrosion treatment according to design requirements.
The insulating layer 4 is preferably polytetrafluoroethylene, the thickness is not less than 5mm, and the length is not less than 10 times of the inner diameter of the insulating pipe section.
The sealing ring 6 is preferably a fluorine rubber ring.
The thickness of the lining corrosion-resistant alloy is not less than 3mm.
The length of the insulating layer 4 is not less than 200mm.
In order to prevent and control corrosion of the flange bulge and ensure the passing performance of the tensioner in the installation process, a cladding technology such as a viscoelastic body and the like can be adopted for protection, and conical transition is realized.
The dissimilar metal submarine pipeline prepared by the insulation method can solve the problem of dissimilar metal galvanic corrosion, and ensure the integrity of corrosion resistance and safety.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. An insulation device for a dissimilar metal submarine pipeline, comprising:
The inner wall of the first pipeline is sleeved with a lining, the lining is overlaid on the inner wall of the first pipeline, the second pipeline and the lining are made of different metal materials, and an annular mounting groove is formed in the inner wall of the second pipeline;
The inner wall of the second pipeline is sleeved with an integrated insulating layer, the insulating layer is annular, the annular insulating layer is formed into an insulating pipe, the insulating pipe is fixedly embedded in the mounting groove and is fixedly connected with the inner wall of the second pipeline, and the end face of one end of the insulating pipe is fixedly connected with the lining;
The insulating pipe is connected with the inner wall of the second pipeline and the lining through sealant;
The lining is made of corrosion-resistant alloy materials;
the insulating tube is made of polytetrafluoroethylene.
2. The insulation device for a dissimilar metal submarine pipeline according to claim 1, wherein the thickness of the insulation tube is not less than 5mm, and the length of the insulation tube is not less than 10 times the inner diameter of the insulation tube.
3. The insulation device of a dissimilar metal submarine pipeline according to claim 1, wherein a first flange is connected to an end of the first pipeline, a second flange is formed to an end of the second pipeline, and the first flange and the second flange are fixedly connected.
4. An insulating device for a dissimilar metal submarine pipeline according to claim 3, wherein sealing grooves are formed in the end faces of the first pipeline and the second pipeline, and sealing rings are arranged in the sealing grooves.
5. The insulation device of a dissimilar metal subsea pipeline according to claim 1, wherein the first pipeline and the second pipeline are both carbon steel pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210434836.7A CN114738563B (en) | 2022-04-24 | 2022-04-24 | Insulation method and device for dissimilar metal submarine pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210434836.7A CN114738563B (en) | 2022-04-24 | 2022-04-24 | Insulation method and device for dissimilar metal submarine pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114738563A CN114738563A (en) | 2022-07-12 |
| CN114738563B true CN114738563B (en) | 2024-06-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210434836.7A Active CN114738563B (en) | 2022-04-24 | 2022-04-24 | Insulation method and device for dissimilar metal submarine pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114738563B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128332Y (en) * | 1992-01-27 | 1993-03-17 | 大庆石油管理局油田建设设计研究院 | Lined insulation flange |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AR034477A1 (en) * | 2002-06-12 | 2004-02-25 | Formar S A | SOLDED UNION OF METAL TUBES, SEPARATOR RING FOR THE PERFORMANCE OF SUCH SOLDATED UNION, AND USE OF SUCH SEPARATOR RING. |
| CN2596158Y (en) * | 2002-12-13 | 2003-12-31 | 宁波阿勒法管系机械制造有限公司 | Insulation connection structure of metal loosing flange pipe |
| US20090320953A1 (en) * | 2005-01-25 | 2009-12-31 | The Texas A&M University System | Interstitially Insulated Pipes and Connection Technologies |
| US20100320749A1 (en) * | 2009-06-19 | 2010-12-23 | Thomas Joseph Keyes | Anchor system for pre-insulated piping |
| CN103123024B (en) * | 2013-01-21 | 2014-07-23 | 章明伟 | Device and method for connecting and sealing steel-plastic composite steel pipe, flange metal pipe and pipe fitting |
| CN103967425A (en) * | 2013-01-28 | 2014-08-06 | 扬州安泰威合金硬面科技有限公司 | Abrasion-resistant and corrosion-resistant bimetal composite oil pipe completely coated with coating |
| CN203230984U (en) * | 2013-04-10 | 2013-10-09 | 河北四伟化学工业有限公司 | Flange type lining pipeline connecting device |
| CN104653905A (en) * | 2013-11-15 | 2015-05-27 | 中国石油天然气股份有限公司 | Welding short section and welding method |
| CN104214439B (en) * | 2014-08-28 | 2016-04-06 | 中国海洋石油总公司 | Different metal submarine pipeline seal |
| CN204785307U (en) * | 2015-05-07 | 2015-11-18 | 山东柯林瑞尔管道工程有限公司 | Anticorrosive plastic tubing pipeline of inside lining |
| CN206468947U (en) * | 2017-02-10 | 2017-09-05 | 江苏新韩通船舶重工有限公司 | A kind of oil carrier stainless steel tube and carbon steel pipe anti-potential difference corrosion attachment means |
| CN206958428U (en) * | 2017-06-27 | 2018-02-02 | 中国石油天然气股份有限公司 | Flange connecting apparatus and pressure vessel assemblies |
| CN212178111U (en) * | 2020-04-22 | 2020-12-18 | 西安向阳航天材料股份有限公司 | Bimetal composite pipe with bonding interface and pipe end surfacing |
| CN114309127B (en) * | 2020-09-29 | 2023-09-26 | 郑州万达重工股份有限公司 | Inner wall surfacing small bending radius bent pipe and forming method thereof |
-
2022
- 2022-04-24 CN CN202210434836.7A patent/CN114738563B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2128332Y (en) * | 1992-01-27 | 1993-03-17 | 大庆石油管理局油田建设设计研究院 | Lined insulation flange |
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| Publication number | Publication date |
|---|---|
| CN114738563A (en) | 2022-07-12 |
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