CN104214439B - Different metal submarine pipeline seal - Google Patents
Different metal submarine pipeline seal Download PDFInfo
- Publication number
- CN104214439B CN104214439B CN201410432861.7A CN201410432861A CN104214439B CN 104214439 B CN104214439 B CN 104214439B CN 201410432861 A CN201410432861 A CN 201410432861A CN 104214439 B CN104214439 B CN 104214439B
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- CN
- China
- Prior art keywords
- insulation coating
- carbon steel
- corrosion resistant
- resistant alloy
- composite pipe
- 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.)
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Classifications
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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
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
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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
- F16L58/02—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
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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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/123—Devices for the protection of pipes under water
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Revetment (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of different metal submarine pipeline seal.Described seal comprises a carbon steel liner corrosion resistant alloy composite pipe; Described carbon steel liner corrosion resistant alloy composite pipe is used for and treats that etch-proof submarine pipeline is connected; The inwall of described carbon steel liner corrosion resistant alloy composite pipe is coated with insulation coating; The thickness of the inner lining corrosion resisting alloy layer of the described carbon steel liner corrosion resistant alloy composite pipe of uncoated described insulation coating is equal with the thickness sum of described insulation coating with the inner lining corrosion resisting alloy layer of the described carbon steel liner corrosion resistant alloy composite pipe of the described insulation coating of coating.The present invention is owing to completing the liner corrosion resistant alloy composite pipe inside coating insulation coating of welding, and prevent the generation of different Galvanic Corrosion of Dissimilar Metals, this device can adopt conventional undersea pipe-laying method to install, and realizes the object of the invention.The present invention is consistent due to internal diameter of the pipeline and composite pipe internal diameter after employing coating insulation coating, avoids conveying logistics to the shearing impact of insulation coating, ensure that the reliability of insulation coating.
Description
Technical field
The present invention relates to a kind of different metal submarine pipeline seal, belong to ocean submarine pipeline technical field.
Background technique
In marine petroleum exploitation engineering, offshore oil production platform or land processing terminal are connected into an organic whole by submarine pipeline, make the links of offshore production facility form the production operation system of interrelated, mutual coordinative operation by pipeline.For the marine petroleum-gas fiedl engineering that Oilfield Group, gas field group joint development or half extra large half land formula are developed, submarine pipeline is the sustainer of oil, gas production system.
At present, submarine pipeline material generally adopts carbon steel or carbon steel liner corrosion resistant alloy.Select carbon steel material for during the medium that conveying corrosivity is not strong, during the medium carrying corrosivity strong, carbon steel liner corrosion resistant alloy need be adopted.When carrying the submarine pipeline of corrosivity strong medium distance longer, the omnidistance carbon steel liner corrosion resistant alloy cost that adopts is too high, is reduce investment, carbon steel liner corrosion resistant alloy can be adopted in high temperature section seriously corroded part, for low temperature part, corrosive medium reduces, and can adopt carbon steel piping.If carbon steel liner corrosion resistant alloy section is directly connected with carbon steel pipeline section, because two kinds of material metal corrosion potentials are different, there is different metal and connect galvanic corrosion problem, therefore insulation processing need be carried out in joint.Different metal-insulator adopts installing insulating flange or insulating joint usually, due to the impact of undersea pipe-laying, and is in the strong corrosive environment of seawater, and Conventional insulation flange and insulating joint cannot meet the requirement of long life serve.The mode of installing under water again after if Conventional insulation flange and insulating joint adopt undersea pipe-laying, need carry out diving operation, required expense will be very high.
Summary of the invention
The object of this invention is to provide a kind of different metal submarine pipeline seal, seal of the present invention is convenient to manufacture, cost is lower and safe and reliable.
Different metal submarine pipeline seal provided by the present invention, comprises a carbon steel liner corrosion resistant alloy composite pipe; Described carbon steel liner corrosion resistant alloy composite pipe is used for and treats that etch-proof submarine pipeline is connected;
The inwall of described carbon steel liner corrosion resistant alloy composite pipe is coated with insulation coating;
The thickness of the inner lining corrosion resisting alloy layer of the described carbon steel liner corrosion resistant alloy composite pipe of uncoated described insulation coating is equal with the thickness sum of described insulation coating with the inner lining corrosion resisting alloy layer of the described carbon steel liner corrosion resistant alloy composite pipe of the described insulation coating of coating, avoid conveying logistics to the shearing impact of insulation coating, ensure that the reliability of insulation coating.
In described seal, the thickness of described insulation coating is not less than 1mm, as 1.0mm.
In described seal, the length of described insulation coating is not less than 10 times of the internal diameter of described carbon steel liner corrosion resistant alloy composite pipe, as 10 times ~ 20 times.
In described seal, the volume resistivity of described insulation coating is not less than 1 × 10
10Ω m, as 1 × 10
10Ω m ~ 10 × 10
10Ω m.
In described seal, described insulation coating extends from the weld joint of described submarine pipeline and described carbon steel liner corrosion resistant alloy composite tube welding, guarantees that inert metal is all covered by insulation coating.
In described seal, on the inwall of described carbon steel liner corrosion resistant alloy composite pipe, the length of uncoated described insulation coating is not less than 200mm, as being 200mm, in case insulation coating is affected when carbon steel section is welded.
In described seal, described submarine pipeline is carbon steel tube.
The present invention's different metal submarine pipeline seal has the following advantages:
1, the present invention is owing to completing the liner corrosion resistant alloy composite pipe inside coating insulation coating of welding, and prevent the generation of different Galvanic Corrosion of Dissimilar Metals, this device can adopt conventional undersea pipe-laying method to install, and realizes the object of the invention.
2, the present invention is consistent due to internal diameter of the pipeline and composite pipe internal diameter after employing coating insulation coating, avoids conveying logistics to the shearing impact of insulation coating, ensure that the reliability of insulation coating.
The present invention can be widely used in the insulation of the submarine pipeline that different metal connects.
Accompanying drawing explanation
Fig. 1 is the sectional drawing of the present invention's different metal submarine pipeline seal.
Fig. 2 is the weld seam schematic diagram of the present invention's different metal submarine pipeline seal when welding with carbon steel tube.
Fig. 3 is the insulation coating end view of the present invention's different metal submarine pipeline seal.
In figure, each mark is as follows:
1 carbon steel tube, 2 carbon steel liner corrosion resistant alloy composite pipes, 3 external anti-corrosion layers, 4 carbon steel base materials, 5 liner corrosion resistant alloys, 6 insulation coatings, 7 weld seams.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, but the present invention is not limited to following examples.
As shown in Figure 1, be the present invention's different metal submarine pipeline seal, it comprises a carbon steel liner corrosion resistant alloy composite pipe 2, carbon steel liner corrosion resistant alloy composite pipe 2 for treat that etch-proof carbon steel tube 1 welds.
As shown in Figure 2, the wall of this carbon steel liner corrosion resistant alloy composite pipe 2 is followed successively by external anti-corrosion layer 3, carbon steel base material 4 and liner corrosion resistant alloy 5 from outside to inside, the inwall (i.e. liner corrosion resistant alloy 5) of carbon steel liner corrosion resistant alloy composite pipe 2 is coated with insulation coating 6, its thickness is 1.0mm, and volume resistivity is 10 × 10
10Ω m, length is 10 times of caliber.
As shown in Figure 3, the thickness of the inner lining corrosion resisting alloy layer of the carbon steel liner corrosion resistant alloy composite pipe 2 of uncoated insulation coating 6 is equal with the thickness sum of insulation coating 6 with the inner lining corrosion resisting alloy layer of the carbon steel liner corrosion resistant alloy composite pipe of coating insulation coating 6, avoid conveying logistics to the shearing impact of insulation coating, ensure that the reliability of insulation coating.
During use, carbon steel liner corrosion resistant alloy composite pipe 2 and carbon steel tube 1 are welded and fixed, and insulation coating 6 is extended from weld seam 7.
The present invention's different metal submarine pipeline seal, the coated length of adjustment insulation coating is not less than 10 times of the internal diameter of carbon steel liner corrosion resistant alloy composite pipe 2, and does not allow the internal surface being coated to carbon steel tube 1; The thickness controlling insulation coating is not less than 1mm; On the inwall of carbon steel liner corrosion resistant alloy composite pipe 2, the length of uncoated insulation coating section is not less than 200mm; The wall thickness of carbon steel tube 1 should consider certain internal corrosion allowance.
Claims (1)
1. a different metal submarine pipeline seal, is characterized in that: described seal comprises a carbon steel liner corrosion resistant alloy composite pipe; Described carbon steel liner corrosion resistant alloy composite pipe is used for being connected with submarine pipeline;
The inwall of described carbon steel liner corrosion resistant alloy composite pipe is coated with insulation coating; The thickness of described insulation coating is not less than 1mm; The length of described insulation coating is not less than 10 times of the internal diameter of described carbon steel liner corrosion resistant alloy composite pipe; The volume resistivity of described insulation coating is not less than 1 × 10
10Ω m;
Described insulation coating extends from the weld joint of described submarine pipeline and described carbon steel liner corrosion resistant alloy composite tube welding;
The thickness of the inner lining corrosion resisting alloy layer of the described carbon steel liner corrosion resistant alloy composite pipe of uncoated described insulation coating is equal with the thickness sum of described insulation coating with the inner lining corrosion resisting alloy layer of the described carbon steel liner corrosion resistant alloy composite pipe of the described insulation coating of coating;
On the inwall of described carbon steel liner corrosion resistant alloy composite pipe, the length of uncoated described insulation coating is not less than 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432861.7A CN104214439B (en) | 2014-08-28 | 2014-08-28 | Different metal submarine pipeline seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432861.7A CN104214439B (en) | 2014-08-28 | 2014-08-28 | Different metal submarine pipeline seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104214439A CN104214439A (en) | 2014-12-17 |
| CN104214439B true CN104214439B (en) | 2016-04-06 |
Family
ID=52096211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410432861.7A Active CN104214439B (en) | 2014-08-28 | 2014-08-28 | Different metal submarine pipeline seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104214439B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976438B (en) * | 2014-04-11 | 2017-10-24 | 北京安科管道工程科技有限公司 | Outer end pipe and its manufacture method for composite metal pipe |
| CN104977512A (en) * | 2015-05-25 | 2015-10-14 | 中国船舶重工集团公司第七二五研究所 | Seawater pipeline insulating property detection device |
| CN112283463A (en) * | 2020-10-20 | 2021-01-29 | 海洋石油工程（青岛）有限公司 | Method for connecting plastic pipeline in ocean platform final assembly stage |
| CN114738563B (en) * | 2022-04-24 | 2024-06-14 | 中国海洋石油集团有限公司 | Insulation method and device for dissimilar metal submarine pipeline |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4542846A (en) * | 1982-03-16 | 1985-09-24 | Kawasaki Jukogyo Kabushiki Kaisha | Method of producing a multiple-wall pipe structure with anticorrosion end protection |
| GB2264764B (en) * | 1992-02-24 | 1995-06-28 | Meyrick Hugh Hadfield | Corrosion resistant pipe |
| RU2181458C2 (en) * | 2000-03-29 | 2002-04-20 | Общество с ограниченной ответственностью "Инженерно-производственный центр" | Pipe with inner protective coat |
| CN101205994B (en) * | 2006-12-22 | 2012-05-30 | 北京安科管道工程科技有限公司 | Metallic composite pipeline, its manufacture method and continuous etching-resistant pipe formed therefor |
| CN102072379A (en) * | 2011-01-17 | 2011-05-25 | 韩路平 | Minor-caliber anticorrosive steel pipes and pipeline |
| CN203023674U (en) * | 2013-01-30 | 2013-06-26 | 金华 | Composite pipe without coating layer at joint |
| CN203453656U (en) * | 2013-08-30 | 2014-02-26 | 中国石油天然气股份有限公司 | Welded short piece for carbon steel pipeline or stainless steel pipeline or bimetal composite pipeline |
| CN204025948U (en) * | 2014-08-28 | 2014-12-17 | 中国海洋石油总公司 | A kind of different metal submarine pipeline seal |
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2014
- 2014-08-28 CN CN201410432861.7A patent/CN104214439B/en active Active
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| Publication number | Publication date |
|---|---|
| CN104214439A (en) | 2014-12-17 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |
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