CN108150729A - A kind of seamless steel tubes for liquid service - Google Patents
A kind of seamless steel tubes for liquid service Download PDFInfo
- Publication number
- CN108150729A CN108150729A CN201711401120.2A CN201711401120A CN108150729A CN 108150729 A CN108150729 A CN 108150729A CN 201711401120 A CN201711401120 A CN 201711401120A CN 108150729 A CN108150729 A CN 108150729A
- Authority
- CN
- China
- Prior art keywords
- layer
- stainless steel
- secondary duct
- welded
- side wall
- 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
- 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
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Articles (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a kind of seamless steel tubes for liquid service, including stainless steel secondary duct, diversion trench, make annealing treatment layer, stretch-resistant layer and antioxidation coating, one layer of protective layer is welded in the internal side wall of the stainless steel secondary duct, the diversion trench is opened in the internal side wall of stainless steel secondary duct, the entrance of diversion trench from stainless steel secondary duct extends to its outlet, and it is provided with several diversion trenches, the annealing layer is welded in the exterior side wall of stainless steel secondary duct, the stretch-resistant layer is welded to connect in the outside of annealing layer, the antioxidation coating is welded in the exterior side wall of stretch-resistant layer.The inside of the seamless steel tubes for liquid service is provided with diversion trench, and the addition of diversion trench so that fluid run-off in transmission process is more stable, and protective layer well keeps apart fluid and steel pipe body, protects steel pipe well, simple in structure, convenient for promoting.
Description
Technical field
The present invention relates to seamless steel pipe technical fields, and in particular to a kind of seamless steel tubes for liquid service.
Background technology
With world oil, the development of gas industry, long distance delivery pipeline construction just towards major diameter, big wall thickness,
High-pressure delivery direction is developed, this requires pipe line steel have high intensity and high tenacity performance, simultaneously because pipeline by way of geography
Bad environments, to security requirement height.The Hi-grade steel seamless steel pipe for line pipe produced using seamless process is had compared with welded tube performance
More stablize and uniform, at present, pipeline steel strength is increased to by X52~X65 in initial API SPEC5L standards
X80~X100, therefore develop the higher Hi-grade steel seamless steel pipe for line pipe of comprehensive performance and become the development of current pipe line steel
Trend.But the seamless steel pipe for meeting X100 standards can't be made using current seamless steel tube production technique.
Existing stainless-steel seamless pipe is formed by the processing to pole and perforation, and stainless-steel seamless pipe makes
Used time is easily corroded, and stainless-steel seamless pipe intensity is weaker, shortens the service life of stainless-steel seamless pipe, stainless
Replacement, installation and the repair of steel seamless steel tube are cumbersome.
Invention content
Invention is designed to provide a kind of seamless steel tubes for liquid service, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the present invention provides following technical solution：A kind of seamless steel tubes for liquid service, including stainless
Steel secondary duct, diversion trench, annealing layer, stretch-resistant layer, antioxidation coating and outer tube, the outer tube are hollow structure, and in it
Portion's installation is welded with one layer of protective layer there are many stainless steel secondary duct in the internal side wall of the stainless steel secondary duct, described to lead
Chute is opened in the internal side wall of stainless steel secondary duct, and the entrance of diversion trench from stainless steel secondary duct extends to its outlet, and open
There are several diversion trenches, the annealing layer is welded in the exterior side wall of stainless steel secondary duct, and the stretch-resistant layer welding connects
The outside of annealing layer is connected on, the antioxidation coating is welded in the exterior side wall of stretch-resistant layer.
Preferably, the outside of the outer tube is coated with erosion resistant coating.
Preferably, the outer tube is dentation wolfram steel steel pipe.
Preferably, the diversion trench is in the shape of a spiral.
The beneficial effects of the invention are as follows：The inside of the seamless steel tubes for liquid service is provided with diversion trench, the addition of diversion trench
So that fluid run-off in transmission process is more stable, it is also added into protective layer, annealing layer and stretch-resistant layer thereon, prevents
Sheath well keeps apart fluid and steel pipe body, protects steel pipe well, and annealing layer can be by high speed conveying
The frictional heat generated between fluid and pipeline disperses, and is unlikely to steel pipe and is heated to deform upon, the addition of stretch-resistant layer so that steel pipe
Extensibility it is more preferable, it is simple in structure, convenient for promote.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the structure diagram of outer tube of the present invention.
In figure：1st, protective layer, 2, stainless steel secondary duct, 3, diversion trench, 4, annealing layer, 5, stretch-resistant layer, 6, oxygen
Change layer, 7, outer tube.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
It please refers to Fig.1 and Fig. 2, the present invention provides a kind of technical solution：A kind of seamless steel tubes for liquid service, including stainless
Steel secondary duct 2, diversion trench 3, annealing layer 4, stretch-resistant layer 5, antioxidation coating 6 and outer tube 7, outer tube 7 are hollow structure, and its
Inside installation is welded with one layer of protective layer 1, anti-fluid stopping there are many stainless steel secondary duct 2 in the internal side wall of stainless steel secondary duct 2
The corrosion-damaged stainless steel secondary duct 2 of body, diversion trench 3 are opened in the internal side wall of stainless steel secondary duct 2, and diversion trench 3 is from stainless steel
The entrance of secondary duct 2 extends to its outlet, and is provided with several diversion trenches 3, and diversion trench 3 can make the more smooth of fluid stream, annealing
Process layer 4 is welded in the exterior side wall of stainless steel secondary duct 2, produced by can dispersing fluid and tube wall high speed relative motion
Heat, stretch-resistant layer 5 is welded to connect in the outside of annealing layer 4, and stretch-resistant layer 5 can make entire seamless steel pipe extensibility
More preferably, antioxidation coating 6 is welded in the exterior side wall of stretch-resistant layer 5, and the outside of outer tube 7 is coated with erosion resistant coating, and outer tube 7 is dentation tungsten
Steel steel pipe, diversion trench 3 are in the shape of a spiral, more preferable using helical form diversion trench water conservancy diversion effect.
Operation principle：Protective layer 1 keeps apart fluid and 2 ontology of stainless steel secondary duct, protect stainless steel secondary duct 2 not by
Corrosion, it is more smooth that diversion trench 3 makes fluid circulate in stainless steel secondary duct 2, and annealing layer 4 can disperse fluid in height
The frictional heat generated in fast transmission process with stainless steel secondary duct 2, stretch-resistant layer 5 enhance the extensibility of pipeline, and antioxidation coating 6 is anti-
Only pipeline oxidization.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of seamless steel tubes for liquid service, including stainless steel secondary duct（2）, diversion trench（3）, annealing layer（4）, tension
Stretch layer（5）, antioxidation coating（6）And outer tube（7）, it is characterised in that：The outer tube（7）For hollow structure, and it is equipped with inside it
Many stainless steel secondary ducts（2）, the stainless steel secondary duct（2）Internal side wall on be welded with one layer of protective layer（1）, it is described to lead
Chute（3）It opens in stainless steel secondary duct（2）Internal side wall on, diversion trench（3）From stainless steel secondary duct（2）Entrance extend to
It is exported, and is provided with several diversion trenches（3）, the annealing layer（4）It is welded on stainless steel secondary duct（2）Exterior side wall
On, the stretch-resistant layer（5）It is welded to connect in annealing layer（4）Outside, the antioxidation coating（6）It is welded on stretch-resistant layer
（5）Exterior side wall on.
2. a kind of seamless steel tubes for liquid service according to claim 1, it is characterised in that：The outer tube（7）Outside
It is coated with erosion resistant coating.
3. a kind of seamless steel tubes for liquid service according to claim 1, it is characterised in that：The outer tube（7）For dentation
Wolfram steel steel pipe.
4. a kind of seamless steel tubes for liquid service according to claim 1, it is characterised in that：The diversion trench（3）In spiral shell
Revolve shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401120.2A CN108150729A (en) | 2017-12-22 | 2017-12-22 | A kind of seamless steel tubes for liquid service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401120.2A CN108150729A (en) | 2017-12-22 | 2017-12-22 | A kind of seamless steel tubes for liquid service |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108150729A true CN108150729A (en) | 2018-06-12 |
Family
ID=62464088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711401120.2A Pending CN108150729A (en) | 2017-12-22 | 2017-12-22 | A kind of seamless steel tubes for liquid service |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108150729A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116716045A (en) * | 2023-08-04 | 2023-09-08 | 鑫鹏源(聊城)智能科技有限公司 | Corrosion-resistant seamless line pipe and manufacturing method thereof |
-
2017
- 2017-12-22 CN CN201711401120.2A patent/CN108150729A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116716045A (en) * | 2023-08-04 | 2023-09-08 | 鑫鹏源(聊城)智能科技有限公司 | Corrosion-resistant seamless line pipe and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180612 |