CN105351656A - Mechanical composite pipe with connection holes and manufacturing method of mechanical composite pipe - Google Patents
Mechanical composite pipe with connection holes and manufacturing method of mechanical composite pipe Download PDFInfo
- Publication number
- CN105351656A CN105351656A CN201510772461.5A CN201510772461A CN105351656A CN 105351656 A CN105351656 A CN 105351656A CN 201510772461 A CN201510772461 A CN 201510772461A CN 105351656 A CN105351656 A CN 105351656A
- Authority
- CN
- China
- Prior art keywords
- pipe
- attachment hole
- base tube
- carbon steel
- bushing 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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/021—T- or cross-pieces
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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
- F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
- F16L13/02—Welded joints
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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
- F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
- F16L13/02—Welded joints
- F16L13/0254—Welded joints the pipes having an internal or external coating
- F16L13/0263—Welded joints the pipes having an internal or external coating having an internal coating
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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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/026—Branch units, e.g. made in one piece, welded, riveted with a layer protecting against erosion
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention discloses a mechanical composite pipe with connection holes. The mechanical composite pipe comprises a carbon steel base pipe and a corrosion-resisting alloy liner pipe arranged in the carbon steel base pipe in a sleeved manner. The composite pipe is provided with the connection holes. The invention further discloses a manufacturing method of the mechanical composite pipe. The manufacturing method includes the steps that firstly, base pipe holes are formed in the carbon steel base pipe, the cleaned corrosion-resisting alloy linear pipe is arranged in the carbon steel base pipe in the sleeved manner, and a base linear pipe is tightly attached to a base linear together through hydraulic pressure or air pressure; sealing welding or bead welding are conducted on gaps between the portions, at the base pipe holes, of the carbon steel base pipe and the corrosion-resisting alloy linear pipe, and finally, linear pipe connection holes are formed in the corrosion-resisting alloy liner pipe, wherein the centers of the linear connection holes correspond to the centers of the base pipe holes. The composite pipe is of an inner-outer layer metal structure and has the intense tightly-attaching performance, the base pipe bears pressure, the liner pipe is resistant to corrosion, and the connection holes can be connected with a branch pipe, various branch joints and instrument joints.
Description
Technical field
The present invention relates to a kind of composite pipe and preparing technical field, be specifically related to a kind of mechanical type composite pipe with attachment hole, the invention still further relates to the preparation method of this mechanical type composite pipe.
Background technique
In recent years, due to high pressure resistant, corrosion-resistant etc. the excellent usability of mechanical bimetal composite pipe, mechanical bimetal composite pipe obtained applied widely in oil, chemical industry.Mechanical bimetal composite pipe mainly to be applied outside petroleum gas station in process pipe engineering, but in whole process pipelines, in order to converge the medium of conveying or shunt, arm must be connect, in order to monitor process pipelines, some instrument must be installed, but due to the structure that mechanical bimetal composite pipe is special, scene is perforate not easily, not easily branch pipe welded directly to the run pipe joint or arm, not easily weld instrument connector, cause mechanical bimetal composite pipe cannot connecing arm and instrument being installed, constrain the application of mechanical bimetal composite pipe in petroleum gas station in process pipe engineering.Originally in the application of mechanical type composite pipe, basic employing pre-terminated one section of corrosion resistant alloy pipe or metallurgy type composite pipe, direct perforate branch pipe welded directly to the run pipe and instrument connector on corrosion resistant alloy pipe or metallurgy type composite pipe, such Problems existing is that price is high, in addition because material its mechanical property different is also subject to a definite limitation, the safety coefficient of pipeline lowers.
Summary of the invention
The object of this invention is to provide a kind of mechanical type composite pipe with attachment hole, solve the not easily perforate of existing machinery formula composite bimetal pipe, not easily branch pipe welded directly to the run pipe joint or arm, not easily weld instrument connector, cause the problem that mechanical bimetal composite pipe cannot connect arm and install instrument.
Another object of the present invention is to provide a kind of preparation method of the mechanical type composite pipe with attachment hole.
The technical solution adopted in the present invention is, a kind of mechanical type composite pipe with attachment hole, and comprise carbon steel base tube and be enclosed within the corrosion resisting alloy bushing pipe in carbon steel base tube, this composite pipe is provided with attachment hole.
Feature of the present invention is also,
Attachment hole is provided with one or more, and the spacing L >=200mm of adjacent two attachment holes.
Connection hole carbon steel base tube and corrosion resisting alloy bushing pipe gap location seal welding or built-up welding welding.
Attachment hole comprises the base tube hole that bushing pipe attachment hole and carbon steel base tube that corrosion resisting alloy bushing pipe is offered are offered, and the position of bushing pipe attachment hole is corresponding with the position in base tube hole.
The size d2 of bushing pipe attachment hole matches with needing the manifold size be connected; The size d1 in base tube hole is d2+5mm >=d1 >=d2+4mm, groove angle α is 60 ° >=α >=40 °.
Another technological scheme of the present invention is, a kind of preparation method of the mechanical type composite pipe with attachment hole, specifically implements according to following steps:
Step 1, first offers one or more base tube holes on carbon steel base tube, and the spacing L in two base tube holes >=200mm, then to the sand blast of carbon steel base tube internal surface, corrosion resisting alloy bushing pipe outer surface is cleared up; By the resistant alloy liner sleeve after cleaning in carbon steel base tube, adopt hydraulic pressure or air pressure to the pressurization of corrosion resisting alloy bushing pipe, corrosion resisting alloy bushing pipe produces plastic deformation by compression swelling and makes carbon steel base tube generation resiliently deformable, base is served as a contrast and fits tightly together;
Step 2, carry out seal welding or built-up welding welding at base tube hole place carbon steel base tube and corrosion resisting alloy bushing pipe gap location, finally on corrosion resisting alloy bushing pipe, offer bushing pipe attachment hole, the center of bushing pipe attachment hole is corresponding with the center in base tube hole.
Feature of the present invention is,
The size d2 of bushing pipe attachment hole matches with needing the manifold size be connected; The size d1 in base tube hole is d2+5mm >=d1 >=d2+4mm, groove angle α is 60 ° >=α >=40 °.
The invention has the beneficial effects as follows,
1. the mechanical type composite pipe of band attachment hole of the present invention, there is the structure of inside and outside double layer of metal, carbon steel base tube is thicker, corrosion resisting alloy bushing pipe is thinner, and band attachment hole, this double-metal layer has fitting tightly of suitable intensity, base tube pressure-bearing, bushing pipe is corrosion-resistant, and attachment hole can connecting branch, various branch pipe connection and instrument connector, is the high mechanical bimetal composite pipe of a kind of cost performance.
2. the preparation method of the mechanical type composite pipe of band attachment hole of the present invention, carry out twice perforate, 1st perforate in basic unit, 2nd perforate on lining, twice perforate can realize corrosion resisting alloy bushing pipe bore size and be less than carbon steel base tube bore size, Seal welding or built-up welding can be realized at tapping, ensure that the corrosion resisting property of tapping.
Accompanying drawing explanation
Fig. 1 is band 1 attachment hole and attachment hole carries out the mechanical composite tube structural drawing of built-up welding;
Fig. 2 is band 1 attachment hole and attachment hole carries out the mechanical composite tube structural drawing of soldering and sealing;
Fig. 3 is the mechanical composite tube structural drawing of band 2 attachment holes;
Fig. 4 is the structural drawing that attachment hole carries out built-up welding process;
Fig. 5 is the structural drawing that attachment hole carries out Seal welding process;
Fig. 6 is the welded structure figure of the direct connecting branch of composite pipe of the present invention;
Fig. 7 is the welded structure figure of composite pipe of the present invention by Saddle connecting branch.
In figure, 1. carbon steel base tube, 2. corrosion resisting alloy bushing pipe, 3. attachment hole, 3-1 base tube hole, 3-2. bushing pipe attachment hole, 4. attachment hole heap weld seam, 5. attachment hole caulk weld, 6. arm, the 7. attachment weld of composite pipe and arm, the 8. attachment weld of arm and Saddle, 9. Saddle, the 10. attachment weld of Saddle and composite pipe.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of mechanical type composite pipe with attachment hole of the present invention, see Fig. 1,2 and 3, the corrosion resisting alloy bushing pipe 2 comprising carbon steel base tube 1 and be enclosed within carbon steel base tube 1, this composite pipe is provided with attachment hole 3.Corrosion resisting alloy bushing pipe 2 is stainless steel, titanium alloy or Cu alloy material.
Attachment hole 3 is provided with one or more, and the spacing L >=200mm of adjacent two attachment holes 3.
As shown in Fig. 4 or Fig. 5, attachment hole 3 place carbon steel base tube 1 and corrosion resisting alloy bushing pipe 2 gap location seal welding or built-up welding welding.Attachment hole 3 comprises the base tube hole 3-1 that bushing pipe attachment hole 3-2 and carbon steel base tube 1 that corrosion resisting alloy bushing pipe 2 is offered offer, and the position of bushing pipe attachment hole 3-2 is corresponding with the position of base tube hole 3-1.The size d2 of bushing pipe attachment hole 3-2 matches with needing the manifold size be connected; The size d1 of base tube hole 3-1 is d2+5mm >=d1 >=d2+4mm, groove angle α is 60 ° >=α >=40 °.
The mechanical type composite pipe of band attachment hole of the present invention, there is the structure of inside and outside double layer of metal, carbon steel base tube 1 is thicker, corrosion resisting alloy bushing pipe 2 is thinner, and band attachment hole 3, this double-metal layer has fitting tightly of suitable intensity, base tube pressure-bearing, bushing pipe is corrosion-resistant, and attachment hole 3 can connecting branch, various branch pipe connection and instrument connector, is the high mechanical bimetal composite pipe of a kind of cost performance.
A preparation method for mechanical type composite pipe with attachment hole, specifically implements according to following steps:
Step 1, first offers base tube hole 3-1 on carbon steel base tube 1, and then to the sand blast of carbon steel base tube 1 internal surface, corrosion resisting alloy bushing pipe 2 outer surface is cleared up; Be enclosed within carbon steel base tube 1 by the resistant alloy bushing pipe 2 after cleaning, adopt hydraulic pressure or air pressure to pressurize to corrosion resisting alloy bushing pipe 2, corrosion resisting alloy bushing pipe 2 produces plastic deformation by compression swelling and makes carbon steel base tube 1 that resiliently deformable occur, and base is served as a contrast and fits tightly together;
Step 2, carry out seal welding at 3-1 place, base tube hole carbon steel base tube 1 and corrosion resisting alloy bushing pipe 2 gap location and form attachment hole caulk weld 5, or built-up welding welding forms attachment hole heap weld seam 4, welding consumables is dissimilar metal wlding, wherein dissimilar metal wlding is ER309LMo, ER316L, ERNiCrMo-3, ER2209 or ER385 welding wire, attachment hole caulk weld 5 or attachment hole heap weld seam 4 will carry out dye penetrant inspection, after weld inspection is qualified, corrosion resisting alloy bushing pipe 2 is offered bushing pipe attachment hole 3-2, and the center of bushing pipe attachment hole 3-2 is corresponding with the center of base tube hole 3-1.
The preparation method of the mechanical type composite pipe of band attachment hole of the present invention, carry out twice perforate, 1st perforate in basic unit, 2nd perforate on lining, twice perforate can realize corrosion resisting alloy bushing pipe 2 bore size and be less than carbon steel base tube 1 bore size, Seal welding or built-up welding can be realized at tapping, ensure that the corrosion resisting property of tapping.
The present invention is not by base tube and the supporting disposable perforate afterwards of bushing pipe, its reason is: (one) due to mechanical composite tube be mechanical bond, between base lining, adhesive strength is low, and lining is thinner, if directly perforate on mechanical composite tube, under drilling tool effect, the defects such as the separation of base lining and lining subside will be there is; (2) if directly perforate on mechanical composite tube, base tube is the same with the bore size of bushing pipe, cannot can carry out Seal welding or built-up welding, cannot ensure the corrosion resisting property of tapping at tapping; (3) need to add cooling liquid during the drilling tool operation had cold, if directly perforate on mechanical composite tube, cooling liquid will enter base lining gap, and this will affect the usability of mechanical type composite pipe.
The mechanical type composite pipe of band attachment hole of the present invention and arm are connected with two kinds of Placements:
The first Placement is that the welded arm 6 not with reinforcement connects, as shown in Figure 6, this Placement is at the direct branch pipe welded directly to the run pipe 6 in attachment hole 3 place, forms the attachment weld 7 of composite pipe and arm, this Placement is applicable to low and middle pressure pipe system, and the bore of arm is less.
The second Placement is that the welded arm 6 that band is strengthened connects, as shown in Figure 7, this Placement is: in order to improve the bearing capacity of pipeline, the attachment weld 10 of Saddle and composite pipe is first formed at attachment hole 3 place weldolet 8, again by Saddle 9 connecting branch 6, form the attachment weld of arm and Saddle, during this Placement is applicable to and high pressure pipe system.
Claims (7)
1. the mechanical type composite pipe with attachment hole, is characterized in that, comprise carbon steel base tube (1) and be enclosed within the corrosion resisting alloy bushing pipe (2) in described carbon steel base tube (1), this composite pipe is provided with attachment hole (3).
2. the mechanical type composite pipe of band attachment hole according to claim 1, is characterized in that, described attachment hole (3) is provided with one or more, and the spacing L >=200mm of adjacent two attachment holes (3).
3. the mechanical type composite pipe of band attachment hole according to claim 1, is characterized in that, described attachment hole (3) place carbon steel base tube (1) and corrosion resisting alloy bushing pipe (2) gap location seal welding or built-up welding welding.
4. the mechanical type composite pipe of the band attachment hole according to claim 1,2 or 3, it is characterized in that, described attachment hole comprises the base tube hole (3-1) that bushing pipe attachment hole (3-2) and described carbon steel base tube (1) that described corrosion resisting alloy bushing pipe (2) is offered are offered, and the position of described bushing pipe attachment hole (3-2) is corresponding with the position of described base tube hole (3-1).
5. the mechanical type composite pipe of band attachment hole according to claim 4, is characterized in that, the size d2 of described bushing pipe attachment hole (3-2) matches with needing the manifold size be connected; The size d1 of described base tube hole (3-1) is d2+5mm >=d1 >=d2+4mm, groove angle α is 60 ° >=α >=40 °.
6. a preparation method for the mechanical type composite pipe with attachment hole, is characterized in that, specifically implements according to following steps:
Step 1, first on carbon steel base tube (1), one or more base tube holes (3-1) are offered, and the spacing L >=200mm of adjacent two base tube holes (3-1), then to carbon steel base tube (1) internal surface sand blast, corrosion resisting alloy bushing pipe (2) outer surface is cleared up; Resistant alloy bushing pipe (2) after cleaning is enclosed within carbon steel base tube (1), hydraulic pressure or air pressure is adopted to pressurize to corrosion resisting alloy bushing pipe (2), corrosion resisting alloy bushing pipe (2) produces plastic deformation by compression swelling and makes carbon steel base tube (1) that resiliently deformable occur, and base is served as a contrast and fits tightly together;
Step 2, seal welding or built-up welding welding is carried out at base tube hole (3-1) place carbon steel base tube (1) and corrosion resisting alloy bushing pipe (2) gap location, finally on corrosion resisting alloy bushing pipe (2), offer bushing pipe attachment hole (3-2), the center of bushing pipe attachment hole (3-2) is corresponding with the center of base tube hole (3-1).
7. the preparation method of the mechanical type composite pipe of band attachment hole according to claim 6, is characterized in that, the size d2 of described bushing pipe attachment hole (3-2) matches with needing the manifold size be connected; The size d1 in base tube hole (3-1) is d2+5mm >=d1 >=d2+4mm, groove angle α is 60 ° >=α >=40 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510772461.5A CN105351656B (en) | 2015-11-12 | 2015-11-12 | A kind of mechanical multiple tube with connecting hole and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510772461.5A CN105351656B (en) | 2015-11-12 | 2015-11-12 | A kind of mechanical multiple tube with connecting hole and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105351656A true CN105351656A (en) | 2016-02-24 |
| CN105351656B CN105351656B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510772461.5A Active CN105351656B (en) | 2015-11-12 | 2015-11-12 | A kind of mechanical multiple tube with connecting hole and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514031A (en) * | 2016-12-28 | 2017-03-22 | 中核核电运行管理有限公司 | Connecting structure of branch pipe and main pipe of pipeline of sea water system of nuclear power plant |
| CN112439979A (en) * | 2020-11-16 | 2021-03-05 | 四川石油天然气建设工程有限责任公司 | Plug-in type pure material branch pipe welding process of corrosion-resistant alloy composite pipe |
| CN114207342A (en) * | 2019-08-09 | 2022-03-18 | 三樱工业株式会社 | Branching structure of piping |
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| JP2008157016A (en) * | 2006-12-01 | 2008-07-10 | Mitsubishi Plastics Ind Ltd | Collecting pipe |
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| CN103411072A (en) * | 2013-08-27 | 2013-11-27 | 西安向阳航天材料股份有限公司 | Surfacing corrosion resistant alloy lined composite tee in transition circular arc and manufacturing method thereof |
| CN203948802U (en) * | 2014-06-18 | 2014-11-19 | 西安向阳航天材料股份有限公司 | A kind of composite bimetal pipe |
| CN204300573U (en) * | 2014-12-08 | 2015-04-29 | 西安向阳航天材料股份有限公司 | A kind of bimetallic composite reducing crossover sub |
| CN205226712U (en) * | 2015-11-12 | 2016-05-11 | 西安向阳航天材料股份有限公司 | Take compound pipe of mechanical type of connecting hole |
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2015
- 2015-11-12 CN CN201510772461.5A patent/CN105351656B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008157016A (en) * | 2006-12-01 | 2008-07-10 | Mitsubishi Plastics Ind Ltd | Collecting pipe |
| CN202580332U (en) * | 2012-06-05 | 2012-12-05 | 西安向阳航天材料股份有限公司 | Bimetal composite pipe fitting with instrument joint |
| CN103411072A (en) * | 2013-08-27 | 2013-11-27 | 西安向阳航天材料股份有限公司 | Surfacing corrosion resistant alloy lined composite tee in transition circular arc and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514031A (en) * | 2016-12-28 | 2017-03-22 | 中核核电运行管理有限公司 | Connecting structure of branch pipe and main pipe of pipeline of sea water system of nuclear power plant |
| CN114207342A (en) * | 2019-08-09 | 2022-03-18 | 三樱工业株式会社 | Branching structure of piping |
| EP4012241A4 (en) * | 2019-08-09 | 2023-05-10 | Sanoh Industrial Co., Ltd. | PIPE BRANCH STRUCTURE |
| CN112439979A (en) * | 2020-11-16 | 2021-03-05 | 四川石油天然气建设工程有限责任公司 | Plug-in type pure material branch pipe welding process of corrosion-resistant alloy composite pipe |
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| Publication number | Publication date |
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| CN105351656B (en) | 2017-06-16 |
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