CN100355626C - 'cabin inside cabin' type working space for welding subwater pipeline in dry mode and under normal pressure - Google Patents

'cabin inside cabin' type working space for welding subwater pipeline in dry mode and under normal pressure Download PDF

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Publication number
CN100355626C
CN100355626C CNB031279600A CN03127960A CN100355626C CN 100355626 C CN100355626 C CN 100355626C CN B031279600 A CNB031279600 A CN B031279600A CN 03127960 A CN03127960 A CN 03127960A CN 100355626 C CN100355626 C CN 100355626C
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CN
China
Prior art keywords
cabin
pipeline
welding
atmospheric
chamber
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CNB031279600A
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Chinese (zh)
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CN1539702A (en
Inventor
蒋力培
焦向东
周灿丰
陈家庆
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北京石油化工学院
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Priority to CNB031279600A priority Critical patent/CN100355626C/en
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Publication of CN100355626C publication Critical patent/CN100355626C/en

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Abstract

The present invention relates to a 'cabin-in-cabin'-typed working cabin for welding underwater pipelines in a dry mode under normal pressure, which is mainly composed of a main regulating frame (1), an auxiliary regulating frame (2), a high-pressure cabin (3) and a normal-pressure cabin (4), wherein the normal-pressure cabin (4) is additionally built in the existing underwater high-pressure cabin (3); only the process step of automatic welding is carried out in the normal-pressure cabin (4), and other process steps are carried out in the high-pressure cabin (3); a left cabin body (41) and a right cabin body (42) of the normal-pressure cabin (4) are mutually connected through flange edges (49), and the top and the bottom edges of the cabin bodies are screwed through top and bottom convex edges (412); the butt end between the flange edges are sealed through a sealing gasket (48); the cabin bodies and a pipeline (5) to be repaired are sealed by an annular special-shaped sealing device. The normal-pressure cabin (4) of the present invention has the advantages of small structural size, light weight, high welding quality, simple and easy maintenance and repair.

Description

" cabin middle deck " formula submarine pipeline atmospheric dry welding job cabin

Technical field

The present invention relates to the work chamber that welds under a kind of atmospheric pressure environment under water, this work chamber places among the hyperbaric chamber, can realize welding in atmospheric pressure environment.

Background technology

It is several that present worldwide submarine pipeline method for repairing and mending mainly contains the repairing of submarine mechanical unitor, repair by welding etc., and repair by welding is widely adopted because of it has series of advantages such as joint quality is good, in light weight.Repair by welding is with regard to its work overall situation, can be divided into dry type repair by welding and wet welding and repair two big classes, the latter by the welder directly at underwater work, thereby exist and easily to produce the hidden danger that weld seam hydrogen induced cracking etc. influences welding quality, many countries especially Europe often will adopt dry type repair by welding scheme more.Dry type welding is that dry chamber is straddled on by the welded tube road, drives away after the water that in the dry chamber a kind of submarine pipeline method for repairing and mending that carries out pipeline welding again by certain mode.Build the difference of principle according to dry chamber structure and dry type environment, the dry type welding can be divided into three kinds of shroud tub type, high pressure type and gerotor types.

In shroud tub type dry type welding, dry chamber (enclosing bucket) exceeds the suitable height of the water surface, and the bucket end, a bucket wall get lodged in water seal outside the bucket, is welded on dry type and encloses in the bucket and carry out.Shroud tub type is welded in the air environment and carries out, reliable welding quality, but configuration flexibility is low, only is suitable for usually carrying out at neritic province domain.

In the high pressure dry welding, drive away the method formation dry type environment of water in the cabin by charging into high pressure gas, be welded in the hyperbaric environment and carry out.Height press dry weldering and compares with other method for repairing and mending and have repairing quality failure-free advantage, compares with the shroud tub type REPAIR WELDING to have applying flexible, can adapt to than advantages such as deepwater field.But height press dry weldering and runs into two difficulties: working depth is crossed and is made welding arc be subjected to too high pressure influence deeply, and the restriction of human saturation diving depth limit (650 meters).So current height press dry weldering research two important directions: the one, exploitation can be applicable to the more welding technology and the new mode of deepwater field, the 2nd, unmanned automatic welding technique.

The welding process of gerotor type dry type welding (normal pressure welding) is carried out in atmospheric pressure environment, and welding quality is identical with land welding, be better than high pressure welds; But the manufacturing that the key of normal pressure welding and difficult point are atmospheric dry chamber.Generally speaking, atmospheric dry chamber can be made the high pressure water shutoff by the strict seal between two openable faying faces out of my cabin.Obviously, the outstanding problem of normal pressure welding existence is: the waters is dark more, and the foundation of normal pressure welding surroundings is difficult more.

Summary of the invention

According to background technology, the object of the present invention is to provide a kind of " cabin middle deck " formula submarine pipeline normal pressure welding job cabin, promptly in existing high undersea hydrostatic pressures work chamber, set up a normal pressure welding chamber again.All welderings operation preceding, postwelding is all finished in hyperbaric chamber, and only the automated welding operation is carried out in atmospheric chamber.Atmospheric chamber cabin body adopts left and right two goblet Butt sealing versions, is provided with the sealing arrangement that adopts the ring-type special-shaped seal ring between its section structure and the pipeline.The pipeline welding machine places in the atmospheric chamber, after downcutting pipeline section to be replaced, puts an atmospheric chamber left side, right cabin body waits to finish the processing of welding body groove, the replace tubes counterpart, after the operation, with a left side, body sealed type assembling in right cabin forms actv. normal pressure working space before the welderings such as adjustment automatic are welding machine.

To achieve these goals, the present invention adopts following technical scheme:

A kind of " cabin middle deck " formula submarine pipeline atmospheric dry welding job cabin, mainly by the whole framework 1 of homophony, the auxiliary framework 2 of adjusting, hyperbaric chamber 3 and atmospheric chamber 4 are formed, and wherein, homophony is put in order framework 1 and waited that repairing pipeline 5 is connected, auxiliary adjustment framework 2 supportings wait to repair pipeline 5, and be connected with the end 35 of hyperbaric chamber 3, with surging sealing damper 31 and wait to repair sealing between the pipeline 5, be fixed on articulated type auxiliary manipulator 32 on the hyperbaric chamber bottom guide track 34 and adjust and support to replace pipe 51; Portable atmospheric chamber 4 is sleeved on by the ring-type profiled seal device 43 on the atmospheric chamber 4 cabin bodies to be waited to repair on the pipeline 5, realize and the sealing of waiting to repair pipeline 5 by ring-type profiled seal device 43, track welding car body 47 is placed in the cabin body of atmospheric chamber 4, and by supporting structure 46 with wait that repairing pipeline 5 is connected, the left cabin body 41 of atmospheric chamber 4, right cabin body 42, be connected to each other by flange 49, the top and the bottom of atmospheric chamber are spirally connected by chimb 412 up and down, air inlet valve 45 on the atmospheric chamber 4 cabin bodies is connected with working cell 33 by pipeline with blow off valve 44, and working cell 33 is connected with the lash ship working cell 61 of lash ship 6 by pipeline 62.

Owing to adopted technique scheme, the present invention to have following advantage and effect:

1, atmospheric chamber size of the present invention can design much smaller than hyperbaric chamber, and the sealing difficulty of this structure significantly reduces;

2, technical scheme of the present invention is compared with the high pressure welding, owing to carry out in atmospheric pressure environment, welding quality is good reliable.The present invention has broken through depth of water restriction, is adapted to very much the requirement of current marine oil industry to deep-water developments.

Description of drawings

Figure 1A is the present invention's normal pressure welding operation system and Working cabin structural representation under water

Figure 1B is the schematic side view of Figure 1A of the present invention

Fig. 2 is the sealed structural representation of atmospheric chamber of the present invention

Fig. 3 is the A-A cross-sectional schematic of Fig. 3 of the present invention

Among the figure: the 1-homophony is put in order framework, auxiliary framework, the 3-hyperbaric chamber adjusted of 2-, the 31-sealing damper that surges, 32-articulated type auxiliary manipulator, 33-working cell, 34-hyperbaric chamber bottom guide track, 35-end, 331-breather hose, the 4-atmospheric chamber, cabin, 41-left side body, body termination, 411-cabin, 412-is chimb up and down, the right cabin of 42-body, 43-ring-type profiled seal device, 431-inner seal circle, the inboard pressure ring that floats of 432-, 433-outside seal ring, the unsteady pressure ring in the 434-outside, 435-threaded adjustment end cap, 44-blow off valve, the 45-air inlet valve, 46-supporting structure, 461-track pillar, the 462-track, 463-miniature gears, 47-track welding car body, the 48-gasket seal, 49-flange, 5-pipeline to be repaiied, 51-replaces pipe, 6-lash ship, 61-lash ship working cell, the 62-pipeline, 7-separate room work chamber

The specific embodiment

Illustrate by Figure 1A, Figure 1B, a kind of " cabin middle deck " formula submarine pipeline atmospheric dry welding job cabin, mainly by the whole framework 1 of homophony, assist and adjust framework 2, hyperbaric chamber 3 and atmospheric chamber 4 are formed, wherein, homophony is put in order framework 1 and is waited that repairing pipeline 5 is connected, and auxiliary adjustment framework 2 supportings wait to repair pipeline 5, and are connected with the end 35 of hyperbaric chamber 3, with surging sealing damper 31 and wait to repair between the pipeline 5 sealing, be fixed on articulated type auxiliary manipulator 32 on the hyperbaric chamber bottom guide track 34 and adjust and support to replace pipe 51; Portable atmospheric chamber 4 is sleeved on by the ring-type profiled seal device 43 on the atmospheric chamber 4 cabin bodies to be waited to repair on the pipeline 5, realize and the sealing of waiting to repair pipeline 5 by ring-type profiled seal device 43, track welding car body 47 is placed in the cabin body of atmospheric chamber 4, and by supporting structure 46 with wait that repairing pipeline 5 is connected, the left cabin body 41 of atmospheric chamber 4, right cabin body 42, be connected to each other by flange 49, the top and the bottom of atmospheric chamber are spirally connected by chimb 412 up and down, air inlet valve 45 on the atmospheric chamber 4 cabin bodies is connected with working cell 33 by pipeline with blow off valve 44, and working cell 33 is connected with the lash ship working cell 61 of lash ship 6 by pipeline 62.

As seen from the figure, the present invention from wait to repair pipeline 5 tops fall clamp pipeline after, wait to repair pipeline 5 with hydraulic gear lifting in the whole framework 1 of homophony and first slightly the adjustment, the auxiliary adjustment framework 2 of hyperbaric chamber 3 ends is accurately adjusted the position of waiting to repair pipeline 5, realize and wait to repair multi-sealed between the pipeline 5 with the sealing damper 31 of surging simultaneously, make and wait to repair pipeline 5 and fuse, add anchor in case of necessity with the present invention.

Finish the preceding dead work of weldering under water in the hyperbaric chamber 3, wait to repair pipeline 5 surfaces as cleaning, pipe clamp is installed, cutting damage pipeline, bevel for welding processing, replace tubes counterparts etc. support the replacement pipeline section by the articulated type auxiliary manipulator 32 that is installed on the hyperbaric chamber bottom guide track 34, and finish the adjusting process of replacing pipeline section.

Mobile atmospheric chamber 4 is to the work area, and the left rudder body 41 of closed atmospheric chamber 4 and right cabin body 42 are connected blow off valve 44 and formed the normal pressure working environments, and the welding machine that starts track welding car body 47 carries out automated welding.Can adopt welding robot to finish automatic tracking and weld full position ring weld seam.Welding finishes, and connects air inlet valve 45, forms hyperbaric environment, is convenient to open atmospheric chamber 4, checks welding quality.

By Fig. 2, Fig. 3 illustrates, and left cabin body 41 adopts ring seal pad 48 with the sealing of right cabin body 42 interfaces, and flange 49 clamps gasket seal 48 by being spirally connected.

Atmospheric chamber 3 adopts ring-type profiled seal device 43 with waiting the sealing of repairing pipeline 5, pressure ring 432 wherein floats the inboard, inner seal circle 431 and outside seal ring 433, the unsteady pressure ring 434 in the outside is sleeved on to be waited to repair on the replacement pipe 51 of pipeline 5, threaded adjustment end cap 435 can be threaded with body termination, cabin 411, screw threaded adjustment end cap 435, make it inwardly promote the outside float pressure ring 434 and the inboard pressure ring 432 that floats, and compression outside seal ring 433 and inner seal circle 431 play sealing function when mobile.

From Fig. 3 also as can be known, the chimb 412 of butt splice is a damascene structures about the atmospheric chamber 4 cabin bodies.

Claims (4)

1, a kind of " cabin middle deck " formula submarine pipeline atmospheric dry welding job cabin, mainly by the whole framework (1) of homophony, the auxiliary framework (2) of adjusting, hyperbaric chamber (3) and atmospheric chamber (4) are formed, it is characterized in that: homophony is put in order framework (1) and is connected with pipeline to be repaiied (5), auxiliary framework (2) the supporting pipeline to be repaiied (5) of adjusting, and be connected with the end (35) of hyperbaric chamber (3), with sealing between sealing damper that surges (31) and the pipeline to be repaiied (5), articulated type auxiliary manipulator (32) adjustment that is fixed on the hyperbaric chamber bottom guide track (34) supports to replace pipe (51); Portable atmospheric chamber (4) is sleeved on the pipeline to be repaiied (5) by the ring-type profiled seal device (43) on the body of atmospheric chamber (4) cabin, realize and the sealing of pipeline to be repaiied (5) by ring-type profiled seal device (43), track welding car body (47) is placed in the cabin body of atmospheric chamber (4), and be connected with pipeline to be repaiied (5) by supporting structure (46), the left cabin body (41) of atmospheric chamber (4), right cabin body (42) is connected to each other by flange (49), the top and the bottom of atmospheric chamber are spirally connected by chimb (412) up and down, air inlet valve (45) on the body of atmospheric chamber (4) cabin is connected with working cell (33) by pipeline with blow off valve (44), and working cell (33) are connected with the lash ship working cell (61) of lash ship (6) by pipeline (62).
2, " cabin middle deck " according to claim 1 formula submarine pipeline atmospheric dry welding job cabin is characterized in that: be mounted with gasket seal (48) between flange (49) butting surface of left cabin body (41) and right cabin body (42).
3, " cabin middle deck " according to claim 1 formula submarine pipeline atmospheric dry welding job cabin, it is characterized in that: ring-type profiled seal device (43), by inner seal circle (431), the inboard pressure ring (432) that floats, outside seal ring (433), pressure ring (434) and threaded adjustment end cap composition float in the outside, wherein threaded adjustment end cap (435) can be threaded with body termination, cabin (411), screw threaded adjustment end cap (435), make it inwardly promote unsteady pressure ring (434) in the outside and the inboard pressure ring (432) that floats, and when mobile, compress outside seal ring (433) and inner seal circle (431), realize sealing.
4, " cabin middle deck " according to claim 1 formula submarine pipeline atmospheric dry welding job cabin, it is characterized in that: the supporting structure (46) of track welding car body (47) is by track pillar (461), track (462), miniature gears (463) is formed, its middle orbit pillar (461) is fixed on the pipeline to be repaiied (5), trapped orbit on it (462), track welding car body (47) is by miniature gears (463) and track (462) engagement.
CNB031279600A 2003-04-25 2003-04-25 'cabin inside cabin' type working space for welding subwater pipeline in dry mode and under normal pressure CN100355626C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB031279600A CN100355626C (en) 2003-04-25 2003-04-25 'cabin inside cabin' type working space for welding subwater pipeline in dry mode and under normal pressure

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Application Number Priority Date Filing Date Title
CNB031279600A CN100355626C (en) 2003-04-25 2003-04-25 'cabin inside cabin' type working space for welding subwater pipeline in dry mode and under normal pressure

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CN1539702A CN1539702A (en) 2004-10-27
CN100355626C true CN100355626C (en) 2007-12-19

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Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100363676C (en) * 2005-12-20 2008-01-23 中国海洋石油总公司 Working cabin for drying maintain of underwater pipeline
CN100363673C (en) * 2005-12-20 2008-01-23 中国海洋石油总公司 Three-dimensional implementing device for underwater dry type cabin
CN100411797C (en) * 2006-03-03 2008-08-20 华南理工大学 Semi-automatic underwater welder with local dryness
CN100464934C (en) * 2006-04-10 2009-03-04 中国海洋石油总公司 Welder support of high pressure dry welding experimental cabin
CN100436034C (en) * 2006-04-10 2008-11-26 中国海洋石油总公司 Welder support gear of high pressure dry welding experimental cabin
CN1877181B (en) * 2006-06-01 2010-05-12 中国石化集团胜利石油管理局钻井工艺研究院 Underwater dry-type repairing work cabin
CN102039500A (en) * 2009-10-13 2011-05-04 北京石油化工学院 Submarine pipeline dry welding work cabin with sealed cabin
WO2013044518A1 (en) * 2011-09-30 2013-04-04 Shi Xiaoming Work chamber at normal pressure for underwater working
CN103507109B (en) * 2013-10-11 2015-07-15 上海利策科技股份有限公司 Underwater dry type cutting cabin and application method thereof
CN105460183B (en) * 2015-12-11 2017-10-20 深圳海油工程水下技术有限公司 Self-floating waterproof cabin and its application method under water
CN105576564B (en) * 2016-03-09 2018-09-14 青岛大学 A kind of water proof constructing device for submerged cable connection
GB2566287A (en) * 2017-09-07 2019-03-13 Irish Sea Contractors Ltd A submersible habitat for the repair of subsea cable
CN108817606A (en) * 2018-07-04 2018-11-16 北京石油化工学院 High undersea hydrostatic pressures dry type welding protective device, welder and welding method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795115A (en) * 1972-09-05 1974-03-05 Lockheed Petroleum Services Method and apparatus for joining subsea pipelines
US4648626A (en) * 1984-08-07 1987-03-10 Nuovo Pignone S.P.A. Telescopic joint for repairing underwater pipelines laid at a great depth
JPS6277176A (en) * 1985-09-30 1987-04-09 Aiteru Giken Service Kk Underwater welding equipment
WO1991004826A1 (en) * 1989-09-28 1991-04-18 Niinivaara Ensi Kyoesti Juhani Method and apparatus for making an underwater weld seam between endwise positioned tubular elements, like pipes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795115A (en) * 1972-09-05 1974-03-05 Lockheed Petroleum Services Method and apparatus for joining subsea pipelines
US4648626A (en) * 1984-08-07 1987-03-10 Nuovo Pignone S.P.A. Telescopic joint for repairing underwater pipelines laid at a great depth
JPS6277176A (en) * 1985-09-30 1987-04-09 Aiteru Giken Service Kk Underwater welding equipment
WO1991004826A1 (en) * 1989-09-28 1991-04-18 Niinivaara Ensi Kyoesti Juhani Method and apparatus for making an underwater weld seam between endwise positioned tubular elements, like pipes

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