CN204459499U - Pipeline - Google Patents
Pipeline Download PDFInfo
- Publication number
- CN204459499U CN204459499U CN201420867960.3U CN201420867960U CN204459499U CN 204459499 U CN204459499 U CN 204459499U CN 201420867960 U CN201420867960 U CN 201420867960U CN 204459499 U CN204459499 U CN 204459499U
- Authority
- CN
- China
- Prior art keywords
- joint
- pipeline
- main body
- connector
- corrosion
- 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.)
- Expired - Fee Related
Links
- 238000000576 coating method Methods 0.000 claims abstract description 41
- 239000011248 coating agent Substances 0.000 claims abstract description 39
- 238000005260 corrosion Methods 0.000 claims abstract description 37
- 238000003466 welding Methods 0.000 claims abstract description 28
- 230000007797 corrosion Effects 0.000 claims description 17
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 238000005536 corrosion prevention Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model provides a pipeline, the pipeline includes: the anti-corrosion connector comprises a main body, a first connector, a second connector and an anti-corrosion coating, wherein one end of the main body is connected with the first connector, the other end of the main body is connected with the second connector, and the inner surface of the main body is lined with the anti-corrosion coating; the calibers of the first joint and the second joint are the same as the calibers of the main body; the pipeline is welded in an opposite mode through the first joint or the second joint, so that welding heat stays at the first joint or the second joint, the anti-corrosion coating is prevented from being burnt out, and the problems that joint repairing quality of a conventional pipeline cannot be guaranteed and joints of small-diameter pipelines and bent pipes cannot be repaired are solved.
Description
Technical Field
The utility model belongs to the technical field of oil gas ground engineering, especially, relate to a pipeline.
Background
With the development of oil fields and the increase of water content, the corrosion in pipelines becomes more and more serious, and the corrosion is the most main reason of pipeline accidents. At present, the treatment of internal coating or lining on the inner wall of a pipeline is the most convenient and effective method for solving the internal corrosion of various pipelines for conveying media, but when the pipeline subjected to the treatment of the internal coating or lining is welded on site, the high temperature of a welding heat source often causes the internal coating or lining in a certain range at the two sides of a welding line to be burnt and damaged, and if the joint coating or lining is not subjected to repaired mouth treatment, the internal coating or lining loses the protection effect on the pipeline. Therefore, the problem of repairing the inner anticorrosive coating is a major bottleneck influencing the development of the inner wall coating technology of the pipeline.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the embodiment of the utility model provides a pipeline for when carrying out the joint coating to pipeline undercoating or inside lining among the solution prior art, the technical problem that the joint coating quality is difficult to guarantee.
The utility model provides a pipeline, the pipeline includes:
the anti-corrosion connector comprises a main body, a first connector, a second connector and an anti-corrosion coating, wherein one end of the main body is connected with the first connector, the other end of the main body is connected with the second connector, and the inner surface of the main body is lined with the anti-corrosion coating; the calibers of the first joint and the second joint are the same as the calibers of the main body;
the pipeline is in butt welding through the first joint or the second joint, so that welding heat stays at the first joint or the second joint, and the anti-corrosion coating is prevented from being burnt out.
In the above scheme, the length of the first joint is not less than 150 mm.
In the above scheme, the length of the second joint is not less than 150 mm.
In the above scheme, the first joint and the second joint are made of corrosion-resistant alloy pipes.
In the above aspect, the corrosion-resistant alloy pipe includes: stainless steel, aluminum alloy.
The utility model provides a pipeline, the pipeline includes: the anti-corrosion connector comprises a main body, a first connector, a second connector and an anti-corrosion coating, wherein one end of the main body is connected with the first connector, the other end of the main body is connected with the second connector, and the inner surface of the main body is lined with the anti-corrosion coating; the calibers of the first joint and the second joint are the same as the calibers of the main body; the pipeline passes through first joint or the welding of second joint butt joint for the welding heat stops in first joint or second joint department avoids burning out anticorrosive coating, so, pipeline anticorrosion back in carrying out need not to carry out the anticorrosive joint coating, has solved among the prior art anticorrosive joint coating quality of conventional pipeline low, the unable technical problem of joint coating of small pipe diameter and return bend.
Drawings
Fig. 1 is a schematic view of the overall structure of a pipeline provided by an embodiment of the present invention;
fig. 2 is a schematic connection diagram of two pipelines according to an embodiment of the present invention.
Description of reference numerals:
11-a body; 12-a first joint; 13-a second linker; 14-an anti-corrosion coating; 2-a first conduit; 21-a first body; 22-a third linker; 23-a fourth linker; 3-a second conduit; 31-a second body; 32-a fifth joint; 33-sixth junction.
Detailed Description
In order to better understand the contents of the present invention, a method for repairing the corrosion-resistant layer in the pipeline in the prior art is introduced. The method is characterized in that the sequence of pipeline on-site welding and inner anticorrosive coating joint coating is different, and the joint coating method mainly comprises two methods:
firstly, a welding-first and repairing-second method; for the pipeline after the internal corrosion protection treatment, the pipeline is welded in a butt joint mode on an installation site, and then the damaged part of the internal corrosion protection layer at the position of a welding line is repaired. When repairing the opening, a high-pressure airless sprayer needs to be fed into the welding seam in the pipe for spraying operation. However, due to the restriction of the inner space of the pipe, the drying and curing degree of the coating, and other factors, the coating has problems of uneven thickness, poor adhesion, and failure to repair the small pipe diameter and the bent pipe.
Secondly, a repair welding method is adopted; for the pipeline subjected to internal corrosion prevention treatment, before installation, high-temperature-resistant internal corrosion prevention measures are firstly taken for the pipeline section near the position of a pipeline joint welding seam, such as: spraying an aluminum layer, a high-temperature molten material, a protective sleeve with a heat insulation layer on the inner wall of the pipe end, and then performing field welding.
However, the quality of the repaired mouth by the mouth repairing mode is difficult to guarantee, and hidden troubles are left for later use, for example: the inner diameter of the lining heat-insulating layer protective sleeve is inconsistent with the inner diameter of the pipeline, and the welding seam cannot be completely covered after the high-temperature molten material is welded and melted.
Based on this, the utility model provides a pipeline, the pipeline includes: the anti-corrosion connector comprises a main body, a first connector, a second connector and an anti-corrosion coating, wherein one end of the main body is connected with the first connector, the other end of the main body is connected with the second connector, and the inner surface of the main body is lined with the anti-corrosion coating; the calibers of the first joint and the second joint are the same as the calibers of the main body; the pipeline is in butt welding through the first joint or the second joint, so that welding heat stays at the first joint or the second joint, and the anti-corrosion coating is prevented from being burnt out.
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
The present embodiment provides a duct, as shown in fig. 1, including: the main body 11, the first joint 12, the second joint 13 and the anticorrosive coating 14; wherein,
one end of the main body 11 is connected with the first joint 12 through welding, the other end of the main body 11 is connected with the second joint 13 through welding, and the inner surface of the main body 11 is lined with an anticorrosive coating 14; the inner surface of the body 11 may also be lined.
Here, the first joint 12 and the second joint 13 have the same specification, the length of the first joint 12 and the second joint 13 is not less than 150mm, and the caliber of the first joint 12 and the second joint 13 is the same as that of the body 11, so as to ensure that the first joint 12 and the second joint 13 can be welded to the body 11 without seams.
In order to ensure the corrosion prevention quality of the whole pipeline, the materials of the first joint 12 and the second joint 13 are corrosion-resistant alloy pipes. The corrosion-resistant alloy tube includes: stainless steel, aluminum alloy, alloy steel and other pipes.
In practical application, the operation steps are as follows:
(1) selecting corrosion-resistant alloy pipes with corresponding calibers and strengths according to the corrosion condition of a pipeline conveying medium;
(2) cutting the corrosion-resistant alloy pipe into a first joint 12 and a second joint 13 which are not less than 150mm, and processing corresponding welded junction chamfers according to welding technical requirements so that the first joint 12 and the second joint 13 can be connected with the main body 11 more conveniently;
(3) welding the first joint 12 and one end of the main body 11 together, welding the second joint 13 and the other end of the main body 11 together, and taking necessary protection measures such as argon filling and the like as required in the welding process;
(4) carrying out sand blasting rust removal and internal and external anticorrosive coating on the main body 11 according to the technical requirement of corrosion prevention in the steel pipeline;
(5) and transporting the pipeline to the site for butt welding. Specifically, the pipe includes a plurality of pipes. For example, when the pipe includes two pipes, the connection is as shown in fig. 2. Specifically, the pipe includes: a first pipe 2, a second pipe 3; the first duct 2 comprises: a first body 21, a third joint 22, and a fourth joint 23; the second duct 3 comprises: a second body 31, a fifth joint 32, and a sixth joint 33; the third joint 22 and the fifth joint 32 are connected by welding to connect the first pipe 2 and the third pipe 3.
Here, because the fourth joint 23 and the fifth joint 32 at the butt-welded position are corrosion-resistant alloy pipes, the heat source of the weld has a certain heat dissipation distance to the anticorrosive coating in the pipe, the inner anticorrosive coatings of the first pipeline 2 and the second pipeline 3 are not burnt out in the welding process, after the welding is completed, the inner anticorrosive joint coating is not needed, the operation is simple and convenient, the effect is obvious, and the problems that the joint coating quality of the conventional pipeline cannot be ensured and the joint coating of the small-diameter pipeline and the bent pipe cannot be carried out are solved.
Example two
In practical application, a main pipe of an oil collecting valve group in a certain combined station is corroded and lost for many times every year, and large-area production stop is caused by the fact that loss accidents are processed every time. In the transformation of a certain year, a bimetal composite pipe with stainless steel lining is used for the whole 200m line of an incoming liquid header, the material of the pipeline is carbon steel, the pipe diameter phi 325 is 8mm, and the design pressure is 2.5 mpa; the first joint 12 and the second joint 13 are made of stainless steel, the lengths are respectively 150mm, the pipe diameters are respectively phi 325 x 8mm, and the design pressure is 2.5 mpa; wherein, the inner liner of first joint 12 and second joint 13 adopts thickness 0.8 mm's stainless steel, uses the utility model provides a pipeline, the condition of corrosion leakage does not appear in the pipeline so far.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. A duct, characterized in that it comprises:
the anti-corrosion connector comprises a main body, a first connector, a second connector and an anti-corrosion coating, wherein one end of the main body is connected with the first connector, the other end of the main body is connected with the second connector, and the inner surface of the main body is lined with the anti-corrosion coating; the calibers of the first joint and the second joint are the same as the calibers of the main body;
the pipeline is in butt welding through the first joint or the second joint, so that welding heat stays at the first joint or the second joint, and the anti-corrosion coating is prevented from being burnt out.
2. The conduit according to claim 1, wherein the first joint has a length of not less than 150 mm.
3. The conduit according to claim 1, wherein the second joint has a length of not less than 150 mm.
4. A pipe according to claim 1, wherein the material of said first joint and said second joint is corrosion resistant alloy tubing.
5. The pipe of claim 4, wherein the corrosion resistant alloy tubing comprises: stainless steel, aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420867960.3U CN204459499U (en) | 2014-12-31 | 2014-12-31 | Pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420867960.3U CN204459499U (en) | 2014-12-31 | 2014-12-31 | Pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204459499U true CN204459499U (en) | 2015-07-08 |
Family
ID=53666383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420867960.3U Expired - Fee Related CN204459499U (en) | 2014-12-31 | 2014-12-31 | Pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204459499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612927A (en) * | 2018-07-06 | 2018-10-02 | 上海图博可特石油管道涂层有限公司 | A kind of gathering line stainless steel connection structure |
-
2014
- 2014-12-31 CN CN201420867960.3U patent/CN204459499U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612927A (en) * | 2018-07-06 | 2018-10-02 | 上海图博可特石油管道涂层有限公司 | A kind of gathering line stainless steel connection structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103008988B (en) | The method of internal joint patch weldering exempted from by a kind of anticorrosive steel pipeline | |
| CN101694261B (en) | Internal repaired mouth construction process of internal coating pipeline | |
| CN105276336A (en) | Method for preventing corrosion in welded pipe and pipe used for method | |
| CN104075047A (en) | Tungsten alloy plated pipeline welding port connecting method | |
| CN104896218A (en) | Bimetal composite pipe end connecting device | |
| CN206973094U (en) | A kind of steel pipe two-part exempts from the dead mouth of interior corrosion-resistanting interpolating port and connects head assembly | |
| CN204459499U (en) | Pipeline | |
| CN103912740A (en) | Nondestructive welding joint for long-distance pipeline steel pipe with inner coating | |
| CN106322051A (en) | Corrosion-resistant pipeline and connecting method of corrosion-resistant pipeline | |
| CN201615318U (en) | Metal anti-corrosion pipeline connector | |
| CN1590587A (en) | Method for protecting inner wall of anti-corrosion pipeline joint by using sacrificial anode | |
| CN206386620U (en) | A kind of corrosion-resistant non-metallic liner pipeline section, pipeline | |
| CN201137793Y (en) | Steel pipe welding interface anti-corrosive protection joint | |
| CN204647602U (en) | A kind of composite bimetal pipe pipe end linkage structure | |
| CN204664650U (en) | For connecting the liner sliding sleeve of two straight tube ends | |
| CN107191743A (en) | A kind of steel pipe two-part exempts from the dead mouth of interior corrosion-resistanting interpolating port and connects head method | |
| RU142274U1 (en) | TUBE WITH PIPES AND INTERNAL COATING | |
| CN202561276U (en) | Oil and gas conveying pipeline | |
| CN202561297U (en) | Pipeline for transporting petroleum and natural gas | |
| CN201964089U (en) | Anticorrosion pipeline | |
| CN204879085U (en) | Outer 3PE anticorrosion pipeline of interior epoxy of benefit is excused from a college course to anticorrosive coating in welding back | |
| CN105003751A (en) | Inside-epoxy outside-3PE corrosion-preventing pipeline with inner corrosion-preventing layer free of repairing after welding and manufacturing process of inside-epoxy outside-3PE corrosion-preventing pipeline | |
| CN104613256A (en) | High-pressure water injection pipeline for oil fields | |
| RU135061U1 (en) | TEE WITH BRANCHES PROTECTED FROM CORROSION BY INTERNAL COATING AND UNDERBOARD BIMETAL BUSHES | |
| CN212361278U (en) | Connecting mechanism for internal coating conveying pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |