CN105351656B - A kind of mechanical multiple tube with connecting hole and preparation method thereof - Google Patents
A kind of mechanical multiple tube with connecting hole and preparation method thereof Download PDFInfo
- Publication number
- CN105351656B CN105351656B CN201510772461.5A CN201510772461A CN105351656B CN 105351656 B CN105351656 B CN 105351656B CN 201510772461 A CN201510772461 A CN 201510772461A CN 105351656 B CN105351656 B CN 105351656B
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- CN
- China
- Prior art keywords
- bushing pipe
- base tube
- connecting hole
- tube
- carbon steel
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- 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-disconnectible 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-disconnectible 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
Abstract
The invention discloses a kind of mechanical multiple tube with connecting hole, including carbon steel base tube and the corrosion resisting alloy bushing pipe being enclosed within carbon steel base tube, the multiple tube is provided with connecting hole.Invention additionally discloses its preparation method：Base tube hole is opened up on carbon steel base tube first, by the resistant alloy liner sleeve after cleaning in carbon steel base tube, is served as a contrast base base bushing pipe using hydraulic pressure or air pressure and is brought into close contact together；Carbon steel base tube and corrosion resisting alloy bushing pipe gap location carry out seal welding or built-up welding welding at base tube hole, and bushing pipe connecting hole is finally opened up on corrosion resisting alloy bushing pipe, and the center of bushing pipe connecting hole is corresponding with the center in base tube hole.Multiple tube of the present invention has the structure of inside and outside double layer of metal, and with being brought into close contact for suitable intensity, base tube pressure-bearing, bushing pipe is corrosion-resistant, and connecting hole can be with connecting branch, various branch pipe connections and instrument connector.
Description
Technical field
The present invention relates to a kind of multiple tube and preparing technical field, and in particular to a kind of mechanical compound with connecting hole
Pipe, the invention further relates to the preparation method of the mechanical multiple tube.
Background technology
In recent years, due to the excellent performance, mechanical double such as high pressure resistant, corrosion-resistant of mechanical bimetal multiple tube
Metal composite pipe has obtained widely applying in oil, chemical industry.Mechanical bimetal multiple tube is mainly natural using oil
It is inevitable in order to the medium for conveying is converged or shunted outside gas station in process pipe engineering, but in whole process pipelines
Branch pipe is connect, in order to be monitored to process pipelines, some instrument must be installed, but because mechanical bimetal multiple tube is special
Different structure, scene is difficult perforate, be difficult branch pipe welded directly to the run pipe joint or branch pipe, be difficult to weld instrument connector, causes mechanical double gold
Branch pipe cannot be connect on category multiple tube and instrument is installed, constrain mechanical bimetal multiple tube process duct in petroleum gas station
Application in road engineering.It is basic multiple using one section of corrosion resistant alloy pipe of pre-terminated or metallurgy type originally in mechanical multiple tube application
Pipe, direct perforate branch pipe welded directly to the run pipe and instrument connector on corrosion resistant alloy pipe or metallurgy type multiple tube are closed, the problem for so existing is
Price is high, and additionally, due to material difference, its mechanical property is also subject to the safety coefficient of a definite limitation, pipeline to lower.
The content of the invention
It is an object of the invention to provide a kind of mechanical multiple tube with connecting hole, solve existing machinery formula bimetallic and answer
Close pipe be difficult perforate, be difficult branch pipe welded directly to the run pipe joint or branch pipe, be difficult weld instrument connector, cause on mechanical bimetal multiple tube
Branch pipe cannot be connect and the problem of instrument is installed.
It is a further object to provide a kind of preparation method of the mechanical multiple tube with connecting hole.
The technical solution adopted in the present invention is, a kind of mechanical multiple tube with connecting hole, including carbon steel base tube and set
Corrosion resisting alloy bushing pipe in carbon steel base tube, the multiple tube is provided with connecting hole.
The features of the present invention is also resided in,
Connecting hole is provided with one or more, and two neighboring connecting hole spacing L >=200mm.
Connection hole carbon steel base tube and corrosion resisting alloy bushing pipe gap location seal welding or built-up welding welding.
Connecting hole includes the bushing pipe connecting hole opened up on corrosion resisting alloy bushing pipe and the base tube hole opened up on carbon steel base tube, lining
The position of pipe connecting hole is corresponding with the position in base tube hole.
The size d2 of bushing pipe connecting hole matches with the manifold size for needing to be connected；The size d1 in base tube hole be d2+5mm >=
D1 >=d2+4mm, bevel angle α are 60 ° >=α >=40 °.
Another technical scheme of the present invention is, a kind of preparation method of the mechanical multiple tube with connecting hole,
Specifically implement according to following steps：
Step 1, opens up one or more base tube holes, and two spacing L >=200mm in base tube hole on carbon steel base tube first,
Then to carbon steel base tube inner surface blasting treatment, corrosion resisting alloy bushing pipe outer surface is cleared up；By the resistant alloy after cleaning
Liner sleeve is pressurizeed using hydraulic pressure or air pressure in carbon steel base tube to corrosion resisting alloy bushing pipe, and corrosion resisting alloy bushing pipe receives compression swelling
Generation is plastically deformed and makes carbon steel base tube that elastic deformation to occur, and serves as a contrast base and is brought into close contact together；
Step 2, carbon steel base tube and corrosion resisting alloy bushing pipe gap location carry out seal welding or built-up welding welding at base tube hole,
Bushing pipe connecting hole is finally opened up on corrosion resisting alloy bushing pipe, the center of bushing pipe connecting hole is corresponding with the center in base tube hole.
It is a feature of the present invention that
The size d2 of bushing pipe connecting hole matches with the manifold size for needing to be connected；The size d1 in base tube hole be d2+5mm >=
D1 >=d2+4mm, bevel angle α are 60 ° >=α >=40 °.
The beneficial effects of the invention are as follows,
1. mechanical multiple tube of the present invention with connecting hole, the structure with inside and outside double layer of metal, carbon steel base tube is thicker, resistance to
Resistant alloy bushing pipe is relatively thin, and band connecting hole, and the double-metal layer has being brought into close contact for suitable intensity, and base tube pressure-bearing, bushing pipe is resistance to
Corrosion, connecting hole can be a kind of high mechanical bimetal of cost performance with connecting branch, various branch pipe connections and instrument connector
Multiple tube.
2. the preparation method of mechanical multiple tube of the present invention with connecting hole, carries out perforate twice, is opened in basic unit for the 1st time
Hole, the 2nd perforate on lining, twice perforate can realize that corrosion resisting alloy bushing pipe bore size is less than carbon steel base tube perforate chi
It is very little, Seal welding or built-up welding can be realized in tapping, it is ensured that the corrosion resisting property of tapping.
Brief description of the drawings
Fig. 1 is the mechanical composite tube structure chart that built-up welding is carried out with 1 connecting hole and connecting hole；
Fig. 2 is the mechanical composite tube structure chart that soldering and sealing is carried out with 1 connecting hole and connecting hole；
Fig. 3 is with 2 mechanical composite tube structure charts of connecting hole；
Fig. 4 is the structure chart that connecting hole carries out built-up welding treatment；
Fig. 5 is the structure chart that connecting hole carries out Seal welding treatment；
Fig. 6 is the welding structure figure that multiple tube of the present invention is directly connected to branch pipe；
Fig. 7 is welding structure figure of the multiple tube of the present invention by Saddle connecting branch.
In figure, 1. carbon steel base tube, 2. corrosion resisting alloy bushing pipe, 3. connecting hole, 3-1 base tubes hole, 3-2. bushing pipe connecting holes, 4.
Connecting hole heap weld seam, 5. connecting hole sealing weld seam, 6. branch pipe, the 7. attachment weld of multiple tube and branch pipe, 8. branch pipe and Saddle
Attachment weld, 9. Saddle, the 10. attachment weld of Saddle and multiple tube.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
A kind of mechanical multiple tube with connecting hole of the present invention, referring to Fig. 1,2 and 3, including carbon steel base tube 1 and is enclosed within carbon steel
Corrosion resisting alloy bushing pipe 2 in base tube 1, the multiple tube is provided with connecting hole 3.Corrosion resisting alloy bushing pipe 2 is stainless steel, titanium alloy
Or Cu alloy material.
Connecting hole 3 is provided with one or more, and two neighboring connecting hole 3 spacing L >=200mm.
As shown in Fig. 4 or Fig. 5, carbon steel base tube 1 and the gap location seal welding of corrosion resisting alloy bushing pipe 2 or heap at connecting hole 3
Weldering welding.Connecting hole 3 includes the bushing pipe connecting hole 3-2 opened up on corrosion resisting alloy bushing pipe 2 and the base tube opened up on carbon steel base tube 1
The position of hole 3-1, bushing pipe connecting hole 3-2 is corresponding with the position of base tube hole 3-1.The size d2 of bushing pipe connecting hole 3-2 and needs
The manifold size of connection matches；The size d1 of base tube hole 3-1 is d2+5mm >=d1 >=d2+4mm, and bevel angle α is 60 ° >=α
≥40°。
Mechanical multiple tube with connecting hole of the invention, the structure with inside and outside double layer of metal, carbon steel base tube 1 is thicker, resistance to
Resistant alloy bushing pipe 2 is relatively thin, and band connecting hole 3, and the double-metal layer has being brought into close contact for suitable intensity, base tube pressure-bearing, bushing pipe
Corrosion-resistant, connecting hole 3 can be a kind of high mechanical double of cost performance with connecting branch, various branch pipe connections and instrument connector
Metal composite pipe.
A kind of preparation method of the mechanical multiple tube with connecting hole, specifically implements according to following steps：
Step 1, opens up base tube hole 3-1 on carbon steel base tube 1 first, resistance to then to the inner surface blasting treatment of carbon steel base tube 1
The outer surface of resistant alloy bushing pipe 2 is cleared up；Resistant alloy bushing pipe 2 after cleaning is enclosed within carbon steel base tube 1, using hydraulic pressure or
Air pressure is pressurizeed to corrosion resisting alloy bushing pipe 2, and corrosion resisting alloy bushing pipe 2 is produced by compression swelling and is plastically deformed and sends out carbon steel base tube 1
Raw elastic deformation, serves as a contrast base and is brought into close contact together；
Step 2, carbon steel base tube 1 and the gap location of corrosion resisting alloy bushing pipe 2 carry out seal welding and form company at the 3-1 of base tube hole
Hole sealing weld seam 5 is connect, or built-up welding welds to form connecting hole heap weld seam 4, welding material is dissimilar metal wlding, wherein dissimilar metal
Wlding is ER309LMo, ER316L, ERNiCrMo-3, ER2209 or ER385 welding wire, connecting hole sealing weld seam 5 or connecting hole heap
Weld seam 4 will carry out dye penetrant inspection, after weld inspection is qualified, bushing pipe connecting hole 3-2, bushing pipe be opened up on corrosion resisting alloy bushing pipe 2
The center of connecting hole 3-2 is corresponding with the center of base tube hole 3-1.
The preparation method of the mechanical multiple tube with connecting hole of the invention, carries out perforate twice, is opened in basic unit for the 1st time
Hole, the 2nd perforate on lining, twice perforate can realize that the bore size of corrosion resisting alloy bushing pipe 2 is less than the perforate of carbon steel base tube 1
Size, Seal welding or built-up welding can be realized in tapping, it is ensured that the corrosion resisting property of tapping.
The present invention is not that, by the supporting perforate disposable afterwards of base tube and bushing pipe, its reason is：(1) because machinery is compound
It is mechanical bond to manage, and bond strength is low between base is served as a contrast, and lining is relatively thin, if the directly perforate on mechanical composite tube, in perforate work
Under tool effect, the defects such as base lining is separated and lining is collapsed are will appear from；(2) if directly the perforate on mechanical composite tube, base tube with
The bore size of bushing pipe is the same, it is impossible to can carry out Seal welding or built-up welding in tapping, it is impossible to ensure the corrosion resisting property of tapping；
(3) drilling tool having needs when operating plus coolant is cold, if the directly perforate on mechanical composite tube, coolant will be entered
Enter base lining gap, this will influence the performance of mechanical multiple tube.
Mechanical multiple tube with connecting hole of the invention is connected with two kinds of connected modes with branch pipe：
The first connected mode is to be connected without the welded branch pipe 6 strengthened, as shown in fig. 6, the connected mode is
The direct branch pipe welded directly to the run pipe 6 at connecting hole 3, forms the attachment weld 7 of multiple tube and branch pipe, and the connected mode is suitable for the low pressure with
Piping, and the bore of branch pipe is smaller.
Second connected mode is that the welded branch pipe 6 with strengthening is connected, as shown in fig. 7, the connected mode is：For
The bearing capacity of pipeline is improved, first weldolet 8 forms the attachment weld 10 of Saddle and multiple tube at connecting hole 3,
Again by the connecting branch 6 of Saddle 9, the attachment weld of branch pipe and Saddle is formed, the connected mode is applied to neutralization high-voltage tube
System.
Claims (2)
1. a kind of preparation method of the mechanical multiple tube with connecting hole, it is characterised in that specifically implement according to following steps：
Step 1, opens up one or more base tube holes (3-1) on carbon steel base tube (1) first, and two neighboring base tube hole (3-1)
Spacing L >=200mm, then to carbon steel base tube (1) inner surface blasting treatment, 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), using hydraulic pressure or air pressure to corrosion resisting alloy bushing pipe (2)
Pressurization, corrosion resisting alloy bushing pipe (2) is produced by compression swelling and is plastically deformed and makes carbon steel base tube (1) that elastic deformation to occur, and serves as a contrast base
It is brought into close contact together；
Step 2, seal welding or heap are carried out at base tube hole (3-1) place's carbon steel base tube (1) and corrosion resisting alloy bushing pipe (2) gap location
Weldering welding, finally opens up bushing pipe connecting hole (3-2), the center of bushing pipe connecting hole (3-2) and base on corrosion resisting alloy bushing pipe (2)
The center of pore (3-1) is corresponding.
2. the preparation method of the mechanical multiple tube with connecting hole according to claim 1, it is characterised in that the bushing pipe
The size d2 of connecting hole (3-2) matches with the manifold size for needing to be connected；The size d1 in base tube hole (3-1) is d2+5mm >=d1
>=d2+4mm, bevel angle α are 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105351656A CN105351656A (en) | 2016-02-24 |
| CN105351656B true 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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Families Citing this family (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 |
| JP7424722B2 (en) * | 2019-08-09 | 2024-01-30 | 三桜工業株式会社 | Piping 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 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103411072B (en) * | 2013-08-27 | 2015-11-04 | 西安向阳航天材料股份有限公司 | The corrosion resistant alloy liner composite tee of built-up welding in transition arc and manufacture 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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- 2015-11-12 CN CN201510772461.5A patent/CN105351656B/en active Active
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| CN105351656A (en) | 2016-02-24 |
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