CN107953011A - A kind of subsea production tree petroleum pipeline assembly welding method - Google Patents
A kind of subsea production tree petroleum pipeline assembly welding method Download PDFInfo
- Publication number
- CN107953011A CN107953011A CN201711176267.6A CN201711176267A CN107953011A CN 107953011 A CN107953011 A CN 107953011A CN 201711176267 A CN201711176267 A CN 201711176267A CN 107953011 A CN107953011 A CN 107953011A
- Authority
- CN
- China
- Prior art keywords
- welding
- connecting seat
- petroleum pipeline
- production tree
- subsea production
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/02—Combined welding or cutting procedures or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/10—Pipe-lines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a kind of subsea production tree petroleum pipeline assembly welding method, step includes：1) auxiliary mould is well placed according to welding position, a connecting seat is installed respectively on two groups of predetermined holes of tooling base upper surface；2) where two welding neck flanges are connected respectively on the connecting seat on one side；3) pipeline body is assembled；Pipeline body two-port and the gap of two welding neck flange interfaces are adjusted, counterpart is carried out respectively using two line-up clamps；4) root pass all-position welding is carried out using tungsten argon arc soldering method；Before welding, back of the body protective gas is continually fed into pipeline chamber body at the connecting seat venthole of one end, after 23 layers of welding, stopping is passed through back of the body protective gas, removes two line-up clamps；5) all positon filling welding and cover welding are carried out using arc welding method；6) auxiliary mould is removed after weld seam is cooled to environment temperature,.The method of the present invention, welding quality is high, and precision meets the requirements.
Description
Technical field
The invention belongs to equipment manufacturing technology field, is related to a kind of subsea production tree petroleum pipeline assembly welding method.
Background technology
Subsea production tree petroleum pipeline is one of critical component of production tree, during use, is subjected to larger pressure, its
Structure includes pipeline body and welding neck flange, both are welded by full penetration mode, and weldquality requires high；Petroleum pipeline
With adjacent elements by flanged joint, metal sealing cushion ring sealing, therefore, the required precision to petroleum pipeline is especially high, trickle
Deformation may then cause seal failure, dielectric leakage.
And under the conditions of the prior art, it is compact-sized due to subsea production tree, using method of the scene with weldering, without enough
Operating space, weldquality can not ensure；Since caliber is small, wall thickness is big, when being welded using conventional method, welding deformation compared with
Greatly, flange center's line produces deflection with respect to petroleum pipeline body axis so that end face of flange does not hang down with petroleum pipeline body axis
Directly, and length dimension and both ends flange bolt hole the relative position error are big, seriously affect assembling quality and sealing performance；And by
Structure limits, and can not also using group postwelding, integrally mach method is made.Therefore, it is badly in need of development one kind and is directed to subsea production tree
The assembly welding method of petroleum pipeline, it is above-mentioned to overcome the shortcomings of.
The content of the invention
The object of the present invention is to provide a kind of subsea production tree petroleum pipeline assembly welding method, solve in the prior art, water
Lower production tree petroleum pipeline matches somebody with somebody weldering difficulty, can not ensure the problem of pipeline required precision at the scene.
The technical solution adopted in the present invention is that a kind of subsea production tree petroleum pipeline assembly welding method, has according to the following steps
Body is implemented：
Step 1, according to welding position be well placed auxiliary mould, pacifies respectively on two groups of predetermined holes of tooling base upper surface
Fill a connecting seat；
Step 2, by two welding neck flanges be connected respectively to where one side connecting seat on；
Step 3, assembling pipeline body；
Pipeline body two-port and the gap of two welding neck flange interfaces are adjusted, is carried out respectively pair using two line-up clamps
Mouthful, realize pipeline body two-port and the positioning of two welding neck flanges；
Step 4, using tungsten argon arc soldering method carry out root pass all-position welding；
Before welding, back of the body protective gas, welding layer 2-3 are continually fed into pipeline chamber body at the connecting seat venthole of one end
Afterwards, stop being passed through back of the body protective gas, remove two line-up clamps；
Step 5, carry out all positon filling welding and cover welding using arc welding method；
After the completion of step 6, arc welding, auxiliary mould is removed after weld seam is cooled to environment temperature,.
The invention has the advantages that it is easy to operate, weldquality is good, pipeline precision is high, it is defeated to solve subsea production tree
Oil pipeline scene is with the problem of weldering is difficult, conventional method can not ensure pipeline required precision；Auxiliary mould is tied for split type combination
Structure, location hole and bolt hole is pre-machined in appropriate location on tooling base as needed when in use, suitable for different sizes
Petroleum pipeline positioning, versatility is good.
Brief description of the drawings
Fig. 1 is subsea production tree petroleum pipeline assembled state schematic diagram of the present invention；
Fig. 2 is the A-A expansion sectional views in Fig. 1.
In figure, 1. pipeline bodies, 2. welding neck flanges, 3. connecting seats, 4. tooling bases, 5. line-up clamps.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
Subsea production tree petroleum pipeline assembly welding method of the present invention, is first made pipeline body 1 respectively of common manufacturing method
And welding neck flange 2, auxiliary mould is made, then using auxiliary mould and line-up clamp 5, completes pipeline body 1 and welding neck flange 2
Counterpart and positioning, are finally welded.
With reference to Fig. 1, Fig. 2, the structure of auxiliary mould is, including tooling base 4 and line-up clamp 5, and tooling base 4 is using square
Body structure, the upper surface of tooling base 4 are provided with two groups of holes in advance according to petroleum pipeline curved course, and every group of hole includes two spiral shells
Keyhole and two location holes, two bolts hole and two location holes are located at a rectangular corner location and two-by-two diagonal friendship
Fork is set, and every group of hole is fixedly connected with a connecting seat 3 using bolt and positioning pin, is provided with two connecting seats 3 altogether；Each
3 horizontal plane of connecting seat is respectively arranged with four holes (equally including two bolts hole and two location holes), horizontal plane with vertical plane
Four holes be engaged with one group of hole on tooling base 4 for connecting tooling base 4, four holes of vertical plane and welding neck flange
Mounting hole on 2 is engaged for connecting welding neck flange 2, and one of 3 vertical plane of connecting seat, four bolt hole center positions are opened
There is a venthole.
Subsea production tree petroleum pipeline assembly welding method of the present invention, is embodied according to the following steps：
Step 1, according to welding position be well placed auxiliary mould, on two groups of predetermined holes of 4 upper surface of tooling base respectively
One connecting seat 3 is installed, sees Fig. 1；
When connecting seat 3 is installed, using it is diagonal wear positioning finger setting after, then diagonally to wear bolt fastening firm；
Step 2, by two welding neck flanges 2 be connected respectively to where one side connecting seat 3 on；
When welding neck flange 2 is installed, using it is diagonal wear positioning finger setting after, then diagonally to wear bolt fastening firm, sees Fig. 2；
Step 3, assembling pipeline body 1；
Adjust 1 two-port of pipeline body and the gap of two 2 interfaces of welding neck flange, 2~3mm of clearance requirement and meet work
After skill requirement, counterpart is carried out respectively using two line-up clamps 5, realizes determining for 1 two-port of pipeline body and two welding neck flanges 2
Position；
Step 4, using tungsten argon arc soldering method carry out root pass all-position welding；
The technological parameter of tungsten argon arc soldering method is：Welding wire：AWS A5.9ER2209, electric current 100-110A, voltage are
10-11V, speed of welding 3.5-5cm/min；
Before welding, back of the body protective gas a (Ar gas) is continually fed into 1 inner cavity of pipeline body at 3 venthole of one end connecting seat,
After welding layer 2-3, stopping is passed through back of the body protective gas a, removes two line-up clamps 5；
Step 5, carry out all positon filling welding and cover welding, the technique ginseng of arc welding using (artificial) arc welding method
Number is：Welding rod：AWS A5.4ER2209-15, electric current 95-105A, voltage 19-21V, speed of welding 8-9cm/min；
After the completion of step 6, arc welding, auxiliary mould is removed after weld seam is cooled to environment temperature,.
Embodiment
The material of pipeline body 1 is：Steel pipe Φ 168X24/S32205, the material of welding neck flange 2 are：S32205.
With reference to Fig. 1, Fig. 2, overall process is first to be made pipeline body 1 and welding neck flange respectively of common manufacturing method
2, compound bevel processed finished products, 1.6 ± 0.6mm of root face, then, using above-mentioned auxiliary mould and line-up clamp 5, completes pipeline sheet
The combination and positioning of body 1 and two welding neck flanges 2, are then welded step by step.
Claims (7)
1. a kind of subsea production tree petroleum pipeline assembly welding method, it is characterised in that be embodied according to the following steps：
Step 1, according to welding position be well placed auxiliary mould, pacifies respectively on two groups of predetermined holes of tooling base (4) upper surface
Fill a connecting seat (3)；
Step 2, by two welding neck flanges (2) be connected respectively to where one side connecting seat (3) on；
Step 3, assembling pipeline body (1)；
Pipeline body (1) two-port and the gap of two welding neck flange (2) interfaces are adjusted, using two line-up clamps (5) respectively
Counterpart is carried out, realizes pipeline body (1) two-port and the positioning of two welding neck flanges (2)；
Step 4, using tungsten argon arc soldering method carry out root pass all-position welding；
Before welding, back of the body protective gas, welding 2-3 are continually fed into pipeline body (1) inner cavity at one end connecting seat (3) venthole
After layer, stopping is passed through back of the body protective gas, removes two line-up clamps (5)；
Step 5, carry out all positon filling welding and cover welding using arc welding method；
After the completion of step 6, arc welding, auxiliary mould is removed after weld seam is cooled to environment temperature,.
2. subsea production tree petroleum pipeline assembly welding method according to claim 1, it is characterised in that：In the step 1,
When connecting seat (3) are installed, using it is diagonal wear positioning finger setting after, then diagonally to wear bolt fastening firm.
3. subsea production tree petroleum pipeline assembly welding method according to claim 1, it is characterised in that：In the step 2,
When welding neck flange (2) are installed, using it is diagonal wear positioning finger setting after, then diagonally to wear bolt fastening firm.
4. subsea production tree petroleum pipeline assembly welding method according to claim 1, it is characterised in that：In the step 4,
Technological parameter using tungsten argon arc soldering method is：Welding wire：AWS A5.9 ER2209, electric current 100-110A, voltage 10-
11V, speed of welding 3.5-5cm/min.
5. subsea production tree petroleum pipeline assembly welding method according to claim 1, it is characterised in that：In the step 5,
The technological parameter of arc welding is：Welding rod：AWS A5.4 ER2209-15, electric current 95-105A, voltage 19-21V, welding speed
Spend for 8-9cm/min.
6. subsea production tree petroleum pipeline assembly welding method according to claim 1, it is characterised in that：The auxiliary mould
Structure be that including tooling base (4) and line-up clamp (5), tooling base (4) use square box structure, tooling base (4)
Upper surface is provided with two groups of holes in advance according to petroleum pipeline curved course, and every group of hole includes two bolts hole and two location holes, and two
A bolt hole and two location holes are located at a rectangular corner location and diagonal arranged in a crossed manner two-by-two, and every group of hole utilizes spiral shell
Bolt and positioning pin are fixedly connected with a connecting seat (3), are provided with two connecting seats (3) altogether；Each connecting seat (3) horizontal plane
Four holes are respectively arranged with vertical plane, four holes of horizontal plane are engaged with one group of hole on tooling base (4) for connecting
Tooling base (4), four holes of vertical plane are engaged with the mounting hole on welding neck flange (2) for connecting welding neck flange (2).
7. subsea production tree petroleum pipeline assembly welding method according to claim 6, it is characterised in that：One of them described
Four bolt hole center positions of connecting seat (3) vertical plane are provided with a venthole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711176267.6A CN107953011B (en) | 2017-11-22 | 2017-11-22 | Assembly welding method for oil pipeline of underwater Christmas tree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711176267.6A CN107953011B (en) | 2017-11-22 | 2017-11-22 | Assembly welding method for oil pipeline of underwater Christmas tree |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107953011A true CN107953011A (en) | 2018-04-24 |
| CN107953011B CN107953011B (en) | 2020-04-24 |
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ID=61959635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711176267.6A Active CN107953011B (en) | 2017-11-22 | 2017-11-22 | Assembly welding method for oil pipeline of underwater Christmas tree |
Country Status (1)
| Country | Link |
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| CN (1) | CN107953011B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2403540Y (en) * | 1999-08-23 | 2000-11-01 | 赵谦 | Pipe and flange abutting joint device |
| CN202411761U (en) * | 2011-12-13 | 2012-09-05 | 中冶天工集团有限公司 | Thick-wall pipeline aligning and welding seam adjusting device |
| CN202447851U (en) * | 2011-12-31 | 2012-09-26 | 扬州秋源压力容器制造有限公司 | Butt welding tool of connecting pipe and flange pipe |
| CN103537781A (en) * | 2012-07-10 | 2014-01-29 | 洪泽东俊机械有限公司 | Ocean Christmas tree pipeline automatic welding device |
| CN205496899U (en) * | 2016-03-29 | 2016-08-24 | 中化二建集团有限公司 | Heavy -calibre welding neck flange and pipe connection internal [line up] clamp |
| CN106141531A (en) * | 2015-04-14 | 2016-11-23 | 昆山安意源管道科技有限公司 | Elbow group is to special internal clamp |
| KR20170030683A (en) * | 2015-09-09 | 2017-03-20 | 대우조선해양 주식회사 | Method and apparatus for purging welding pipe |
-
2017
- 2017-11-22 CN CN201711176267.6A patent/CN107953011B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2403540Y (en) * | 1999-08-23 | 2000-11-01 | 赵谦 | Pipe and flange abutting joint device |
| CN202411761U (en) * | 2011-12-13 | 2012-09-05 | 中冶天工集团有限公司 | Thick-wall pipeline aligning and welding seam adjusting device |
| CN202447851U (en) * | 2011-12-31 | 2012-09-26 | 扬州秋源压力容器制造有限公司 | Butt welding tool of connecting pipe and flange pipe |
| CN103537781A (en) * | 2012-07-10 | 2014-01-29 | 洪泽东俊机械有限公司 | Ocean Christmas tree pipeline automatic welding device |
| CN106141531A (en) * | 2015-04-14 | 2016-11-23 | 昆山安意源管道科技有限公司 | Elbow group is to special internal clamp |
| KR20170030683A (en) * | 2015-09-09 | 2017-03-20 | 대우조선해양 주식회사 | Method and apparatus for purging welding pipe |
| CN205496899U (en) * | 2016-03-29 | 2016-08-24 | 中化二建集团有限公司 | Heavy -calibre welding neck flange and pipe connection internal [line up] clamp |
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| Publication number | Publication date |
|---|---|
| CN107953011B (en) | 2020-04-24 |
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Effective date of registration: 20201228 Address after: 721002 No.2 Dongfeng Road, Jintai District, Baoji City, Shaanxi Province Patentee after: Baoji Oilfield Machinery Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC national oil and gas drilling equipment Engineering Technology Research Center Co., Ltd Address before: 721002 No.2 Dongfeng Road, Jintai District, Baoji City, Shaanxi Province Patentee before: Baoji Oilfield Machinery Co.,Ltd. |
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