CN103253356B - Large-size pipe welding floating platform waterborne and dry construction condition construction method - Google Patents
Large-size pipe welding floating platform waterborne and dry construction condition construction method Download PDFInfo
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- CN103253356B CN103253356B CN201310215905.6A CN201310215905A CN103253356B CN 103253356 B CN103253356 B CN 103253356B CN 201310215905 A CN201310215905 A CN 201310215905A CN 103253356 B CN103253356 B CN 103253356B
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Abstract
The invention discloses a kind of large-size pipe welding floating platform waterborne and dry construction condition construction method, welding floating platform comprises welding operation case, and welding operation case is made up of rectangular base plate and coaming plate, and welding operation case upper end is uncovered.Two end coamings are respectively equipped with buoyancy tank, and buoyancy tank is provided with note discharge port.Both sides coaming plate offers respectively arc and embed groove, embed on groove end face at arc and be provided with hermetically-sealed construction; Two end coamings are respectively provided with a casing pressure clamp device near coaming plate place, both sides respectively, and four casing pressure clamp devices on two end coamings embed in groove for the arc be pressed on side plate by object to be welded.Jig of the present invention can be two sections of large-scale weld-end fittings welding on the water and provides a dry construction condition, a series of troubles descending water-band again after avoiding welding on the coast.Dead work before welding significantly reduces, and also reduces the labour intensity of operating personnel.This jig can also as the maintenance platform in later stage.
Description
Technical field
The present invention relates to jig, concrete finger a kind of on the water surface operation with the jig of bubbling through the water column by some sections of welding object weld togethers, and before the pipe fitting welding large-scale waterborne to propose based on this jig, build the method for dry construction condition, belong to marine traffic engineering technical field.
Background technology
In Practical Project, usually relate to the welding of large-size pipe, if welded on the ground, more relatively easily, only need can be welded fixing for two sections of pipe fittings to be welded by fixture.If welded on the water surface, just there is series of problems.Although prior art can realize Underwater Welding, expensive, difficulty is comparatively large, cannot bear expensive welding expense for common engineering.Even if therefore weld on the water, also need to provide a dry construction condition for it.Although these pipe fittings can make it bubble through the water column, while bubbling through the water column, part must be had in underwater.How to build a dry construction condition, this is the Major Difficulties that large-scale (ultra-large type) pipe fitting welds on the water.In order to avoid the problems referred to above of welding on the water, after also having welding on the coast good, then be transported to way of carrying out installing waterborne, but will be transported to waterborne by the large-size pipe of weld together (such as hundreds of rice is long, and several meters thick), this is again another stubborn problem.
Such as, in order to protect bridge from ship collision, the navigation that particularly arch bridge brings with water level height affects very large, the risk of its collision is also large, prior art proposes a kind of application number for " 201210474849.3 ", the patent application that denomination of invention is " a kind of independent regional anti-collision device adapting to high water-level amplitude ", this anticollision device also can adapt to high water-level amplitude independent of bridge self, it comprises two driftways, the floating drum with water level automatic lifting is provided with in the well room of each driftway, driftway has and makes well room and the outside vertical guiding slot port connected, the vertical guiding slot port that the two ends of the crashproof band of arc are each passed through on two driftways is connected to form Anti-bumping protection district waterborne with corresponding floating drum.Crashproof band is arranged on boats and ships and also can be elevated voluntarily with change of level the arch ring of side, place and boats and ships to be kept apart by side, even if collide, is also the collision between boats and ships and crashproof band, therefore can protects bridge.
The crashproof band bodily form in this patent is huge, and total length is more than 300 meter, outer layer pipe diameter 4032mm, inner layer steel pipe diameter 2032mm, is typical large-scale pipe fitting waterborne, and entirety is arc.For so huge pipe fitting waterborne, its processing is a no small problem.Prior art is spliced by some sections of straight cylinder sections replace curve by straight lines by crashproof for whole arc band, and every section of straight cylinder sections forms independent closed buoyancy aid, and its length actual design is 6m.Consider and after being all welded as entirety on the coast, descend water and installation to be a very large problem again, also bother very much if all welded on the water, therefore crashproof band is first divided into four large sections man-hour by actual adding, every large section is first welded on the coast, and then be transported to waterborne by four large sections, then it is overall successively four large section welding to be formed crashproof band.Welding waterborne is the construction Difficulties of this project, and as previously mentioned, major technical barrier is welding needs dry construction condition, for respective close to hundred meters long, for the thick two sections of huge buoyancy aids of diameter four meters, a welding dry construction condition is in not easy.
Summary of the invention
For prior art above shortcomings, the object of the invention is for above-water large-scale welding object provides the floating jig of a dry construction condition.
The present invention devises based on above-mentioned floating jig the method that dry construction condition built by a set of large-scale pipe fitting waterborne simultaneously.
For achieving the above object, the present invention adopts following technological means:
Floating jig, is characterized in that: comprise welding operation case, and welding operation case is made up of rectangular base plate and the coaming plate being positioned at rectangular base plate surrounding, and welding operation case upper end is uncovered; Two end coamings are respectively arranged with the buoyancy tank making jig entirety be in setting floading condition, buoyancy tank upper surface is provided with note discharge port for changing buoyancy tank buoyancy by the water in increase and decrease buoyancy tank; Both sides coaming plate offers respectively the arc corresponding with object curved surfaces to be welded and embed groove, embed on groove end face at arc and be provided with for embedding the hermetically-sealed construction forming sealing surface between groove at object to be welded and arc; Two end coamings are respectively provided with a casing pressure clamp device near coaming plate place, both sides respectively, and four casing pressure clamp devices on two end coamings embed in groove for the arc be pressed on side plate by object to be welded.
Described hermetically-sealed construction is pressure bladder, and the shape after pressure bladder inflation is embed arc corresponding to groove shape with arc.
Described pressure clamp device has a pressure head, and object to be welded is steel pipe, and pressure head is provided with operation pulley towards that face of steel pipe to be welded, run pulley can with steel tube surface Structure deformation to be welded.
Before welding, two sections of objects to be welded are (as steel pipe, crashproof band in background technology can think a kind of steel tube component of ad hoc structure) locate on the water surface in advance and bubbled through the water column, and the position relationship between two sections of objects to be welded is fixed by fixture.The core object of this floating jig makes welding be in a dry construction condition exactly, because under normal circumstances, two sections of objects to be welded have half to be positioned under water, can not carry out welding procedure.
This floating jig is bubbled through the water column, its using method is (to weld crashproof band, other weld-end fittings is similar): 1, first by noting discharge port to water filling in buoyancy tank, buoyancy tank buoyancy is decreased to and makes jig be in suspended state, namely buoyancy is suitable with jig weight; 2, jig to be submerged in water by manpower and to move to immediately below two sections of crashproof welding positions to be welded; 3, jig is pulled out make the arc on the coaming plate of both sides embed groove in the water surface respectively two sections of crashproof bands to be welded to be blocked again, then by pressure clamp device, two sections of crashproof band arcs be pressed on side plate are embedded in groove, the position of two sections of crashproof bands and jig is fixed; 4, the water in buoyancy tank is discharged, make buoyancy tank reach the buoyancy of setting, and make welding operation case emersion in the water surface; 5, by sealing arrangement (if air bag, then by the airbag aeration of emptying in advance), crashproof band and arc are embedded between groove and form positiver sealing face, the water in river course can not enter welding operation case; 6, the water in welding operation case is extracted out, make to form dry construction condition in welding operation case; 7, be reserved with between and crashproof band inner at welding operation case can for people by and as the passage of operating area, welding personnel enters in welding operation case passage by ladder access, can weld two sections of crashproof belt surfaces to be welded.Wherein after two sections of welding, run pulley auxiliary under, can by jig directly along crashproof Tape movement to the next position needing to weld, and need not preceding step 1-6 be repeated.
Compared to existing technology, the present invention has following beneficial effect:
1, this jig can be two sections of large-scale weld-end fittings welding on the water and provides a dry construction condition, a series of troubles descending water-band again after avoiding welding on the coast.
2, after first paragraph welding, just do not need below again this jig to be removed and move to next welding position again, directly this jig can be moved to the next position needing welding along welding object when welding object had in arms by jig, dead work before welding significantly reduces, and also reduces the labour intensity of operating personnel.
3, this jig also has maintenance function, and namely it not only can play jig effect in the construction stage, can also as the maintenance platform in later stage.
Accompanying drawing explanation
Fig. 1-structural representation of the present invention.
Fig. 2-Figure 1A-A cutaway view.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further details.
As depicted in figs. 1 and 2, floating jig of the present invention (being that crashproof band carries out introducing with welding object bright), comprise welding operation case, welding operation case is made up of rectangular base plate 1 and the coaming plate (two end coamings 2 and both sides coaming plate 3) being positioned at rectangular base plate surrounding, and welding operation case upper end is uncovered.Two end coamings 2 are respectively arranged with the buoyancy tank 4 making jig entirety be in setting floading condition, buoyancy tank 4 upper surface is provided with note discharge port 9 for changing buoyancy tank buoyancy by the water in increase and decrease buoyancy tank.Both sides coaming plate offers respectively the arc corresponding with crashproof band curved surfaces to be welded and embed groove, embed on groove end face at arc and be provided with for embedding the hermetically-sealed construction 5 forming sealing surface between groove at crashproof band to be welded and arc.Two end coamings 2 are respectively provided with a casing pressure clamp device 6 near coaming plate place, both sides respectively, four casing pressure clamp devices 6 on two end coamings are relative between two, wherein one section of arc be pressed on side plate in two sections of crashproof bands 8 embeds in groove by a pair relative pressure clamp device jointly, and another section in two sections of crashproof bands compresses relative pressure clamp device by jointly.
Described hermetically-sealed construction 5 is pressure bladder, and the shape after pressure bladder inflation is embed arc corresponding to groove shape with arc.
Described pressure clamp device 6 has a pressure head, and pressure head is provided with operation pulley 7 towards crashproof that face of being with to be welded, and running pulley 7 can contact with crashproof band 8 surface scrolls to be welded.
Before welding, all crashproof bands to be welded, from moving to water on the bank, locating in advance and bubbling through the water column by natural buoyancy on the water surface, and the position relationship between all crashproof bands to be welded is fixed by fixture.Namely this floating jig does not provide fixture positioning function, and its core object is just to provide a jig, makes welding be in a dry construction condition, because under normal circumstances, two sections to be welded is crashproofly positioned under water with half, obviously can not carry out welding procedure.
The method (being also this floating jig using method) of dry construction condition is built before large-scale pipe fitting welding waterborne, two sections of pipe fittings to be welded are located in advance on the water surface and bubbles through the water column, and the position relationship between two sections of pipe fittings to be welded is fixed by fixture; The steps include:
1) first by noting discharge port to water filling in buoyancy tank, buoyancy tank buoyancy being decreased to and making jig be in suspended state; Namely buoyancy is suitable with jig weight, and the 2nd, 3 step operations are more laborsaving so below;
2) jig to be submerged in water by manpower and to move to immediately below two sections of pipe fitting welding positions to be welded;
3) jig is pulled out make the arc on the coaming plate of both sides embed groove in the water surface respectively two sections of pipe fittings to be welded to be blocked, then by the pressure clamp device on jig, two sections of pipe fitting to be welded arcs be pressed on side plate are embedded in groove, the position of two sections of pipe fittings to be welded and jig is fixed;
4) with pump, the water in buoyancy tank is discharged, make buoyancy tank reach the buoyancy of setting, and make welding operation case emersion in the water surface, now filled water in welding operation case;
5) start sealing arrangement (if air bag, then by the airbag aeration of emptying in advance) pipe fitting to be welded and arc to be embedded between groove form positiver sealing face, make the water in river course can not enter welding operation case;
6) water in welding operation case is all drained, make to form dry construction condition in welding operation case;
7) be reserved with between and pipe fitting to be welded inner at welding operation case can for people by and as the passage of operating area, welding personnel enters in welding operation case passage by being located at inner ladder access, can weld two sections of tube surface to be welded.
If it is inner to weld airtight buoyancy aid, airtight buoyancy aid can be entered by the manhole (service hatch) of airtight buoyancy aid upper end.Wherein after two sections of welding, do not need to throw off jig, only need run pulley auxiliary under, just jig directly can be moved to the next position needing to weld along pipe fitting to be welded, and need not preceding step 1-6 be repeated.
Buoyancy during jig work of the present invention is provided jointly by both sides buoyancy tank and middle welding operation case; By the floading condition to buoyancy tank note draining adjustment floating jig.Floating jig utilizes aerated capsule hermetic seal, and coordinates water-pumping/draining measure, builds dry construction condition, takes necessary aeration-cooling measure simultaneously, and is equipped with corresponding buoyant apparatus, guarantee welding personnel personal safety.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. floating jig, is characterized in that: comprise welding operation case, and welding operation case is made up of rectangular base plate (1) and the coaming plate that is positioned at rectangular base plate surrounding, and welding operation case upper end is uncovered; Two end coamings (2) are respectively arranged with the buoyancy tank (4) making jig entirety be in setting floading condition, buoyancy tank (4) upper surface is provided with note discharge port (9) for changing buoyancy tank buoyancy by the water in increase and decrease buoyancy tank; Both sides coaming plate (3) offers respectively the arc corresponding with object curved surfaces to be welded and embed groove, embed on groove end face at arc and be provided with for embedding the hermetically-sealed construction (5) forming sealing surface between groove at object to be welded and arc; Two end coamings (2) are respectively provided with a casing pressure clamp device (6) near coaming plate place, both sides respectively, and four casing pressure clamp devices on two end coamings embed in groove for the arc be pressed on side plate by object to be welded; Four casing pressure clamp devices on two end coamings are relative between two, and wherein one section of arc be pressed on side plate in two sections of crashproof bands embeds in groove by a pair relative pressure clamp device jointly, and another section in two sections of crashproof bands compresses relative pressure clamp device by jointly;
Described pressure clamp device has a pressure head, and object to be welded is steel pipe, and pressure head is provided with operation pulley towards that face of steel pipe to be welded, run pulley can with steel tube surface Structure deformation to be welded.
2. floating jig according to claim 1, is characterized in that: described hermetically-sealed construction is pressure bladder, and the shape after pressure bladder inflation is embed arc corresponding to groove shape with arc.
3. large-scale pipe fitting dry construction condition construction method waterborne, it is characterized in that: this method adopts floating jig according to claim 1, two sections of pipe fittings to be welded are located in advance on the water surface and bubbles through the water column, and the position relationship between two sections of pipe fittings to be welded is fixed by fixture; The steps include:
1) first by noting discharge port to water filling in buoyancy tank, buoyancy tank buoyancy being decreased to and making jig be in suspended state;
2) jig to be submerged in water and to move to immediately below two sections of pipe fitting welding positions to be welded;
3) jig is pulled out make the arc on the coaming plate of both sides embed groove in the water surface respectively two sections of pipe fittings to be welded to be blocked, then by the pressure clamp device on jig, two sections of pipe fitting to be welded arcs be pressed on side plate are embedded in groove, the position of two sections of pipe fittings to be welded and jig is fixed;
4) water in buoyancy tank is discharged, make welding operation case emersion in the water surface;
5) start sealing arrangement pipe fitting to be welded and arc to be embedded between groove form positiver sealing face, make the water in river course can not enter welding operation case;
6) water in welding operation case is drained, make to form dry construction condition in welding operation case;
7) be reserved with between and pipe fitting to be welded inner at welding operation case can for people by and as the passage of operating area, welding personnel enters in welding operation case passage, can weld two sections of tube surface to be welded;
Wherein after two sections of welding, run pulley auxiliary under, floating jig is directly moved to the next position needing welding along pipe fitting waterborne.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310215905.6A CN103253356B (en) | 2013-06-03 | 2013-06-03 | Large-size pipe welding floating platform waterborne and dry construction condition construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310215905.6A CN103253356B (en) | 2013-06-03 | 2013-06-03 | Large-size pipe welding floating platform waterborne and dry construction condition construction method |
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| CN103253356A CN103253356A (en) | 2013-08-21 |
| CN103253356B true CN103253356B (en) | 2015-10-14 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103910044B (en) * | 2014-04-14 | 2016-08-17 | 大连理工大学 | A kind of large-scale the floating structures semi-submersible type lifting platform and application process thereof |
| CN104192266A (en) * | 2014-09-30 | 2014-12-10 | 广州广船国际股份有限公司 | Maintenance method and device for ship screw shaft rear seal |
| CN109655474A (en) * | 2018-12-20 | 2019-04-19 | 铜陵市特种设备监督检验中心 | Ray flaw detector high-altitude tooling and its application method and application |
| CN110076510A (en) * | 2019-05-27 | 2019-08-02 | 胡晓光 | Large-size pipe anticollision band afloat joining construction method |
| CN113441883B (en) * | 2021-07-29 | 2023-05-09 | 广东华坤建设集团有限公司 | Immersed tube welding water workbench |
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| CN202388186U (en) * | 2011-12-07 | 2012-08-22 | 广州市恒盛建设工程有限公司 | Assistor for over-water butt weld of large-diameter steel pipes |
| CN102926355A (en) * | 2012-11-21 | 2013-02-13 | 重庆交通大学西南水运工程科学研究所 | Independent regional anti-collision device adapting to high water-level amplitude |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20130043011A (en) * | 2011-10-19 | 2013-04-29 | 대우조선해양 주식회사 | Pipe support |
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| 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 |
| CN201596882U (en) * | 2010-01-12 | 2010-10-06 | 金华送变电工程有限公司 | Adjustable pipe welding rotator |
| CN102133692A (en) * | 2010-01-21 | 2011-07-27 | 中国石油天然气集团公司 | Floating butt-welding device for submarine pipeline |
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