CN202053008U - Connection structure used for repairing an aluminum magnesium alloy pipeline weld seam - Google Patents
Connection structure used for repairing an aluminum magnesium alloy pipeline weld seam Download PDFInfo
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- CN202053008U CN202053008U CN2011201047651U CN201120104765U CN202053008U CN 202053008 U CN202053008 U CN 202053008U CN 2011201047651 U CN2011201047651 U CN 2011201047651U CN 201120104765 U CN201120104765 U CN 201120104765U CN 202053008 U CN202053008 U CN 202053008U
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Abstract
The utility model discloses a connection structure used for repairing an aluminum magnesium alloy pipeline weld seam, which can realize the repair and weld to the pipeline without inner surface pad not having to cutting the pipeline at the repaired weld seam position, achieve good repairing quality, and save time and labor in the work process; solves the technique problems in prior arts that repairing an aluminum magnesium alloy pipeline weld seam needs cutting off pipeline at the repaired weld seam position, even adding an auxiliary interface, consequently increases the welding work load, and wastes manpower and material resources. The connection structure comprises pipelines butt joined and connected by ring weld seams bar shaped openings are formed on the defect positions of the ring weld seam, along the ring weld seam direction; pads made of the same material with the pipeline are disposed in the openings; a pull ring is in active connection with the outer side surface of the pad, and is extended to outside of the opening; and the outer side surface of the pad is abutted to the pipeline inner wall corresponding to the periphery of the opening.
Description
Technical field
The utility model relates to a kind of pipe welding seam and reprocesses syndeton, relates in particular to a kind of pipeline that need not to cut off the weld seam place of reprocessing and can reprocess syndeton to the al-mg alloy pipe weld seam that the linerless pipeline of inner surface is reprocessed welding.
Background technology
Because hydronalium has low temperature resistant characteristics, its tower and pipeline that is widely used in the air low temperature separator is made for this reason, wherein the diameter of tower is usually between 3000mm to 5000mm, height is between 40000mm to 60000mm, wall thickness is usually between 14mm to 30mm, between 25mm to 1200mm, the wall thickness of pipeline is between 3mm to 20mm usually for the diameter of pipeline.Characteristics such as fusing point is low because hydronalium also has simultaneously, heat conduction fast, fusing back flowability is strong; so can not adopt the process of traditional single face welding and double face shaping that does not add the cushions when hydronalium is welded, the interchange argon shield welding procedure that must adopt two arc weldings by both sides or welding backing is installed in advance in the weld seam bottom.
The welding procedure principle of hydronalium is under the normal condition: adopt as far as possible " two arc welding by both sides ", but when the welding of little caliber or closed weld, because limitting, the operating space can't adopt two arc weldings by both sides, can only adopt in advance the process of mounting process gasket ring to carry out single welding, and when weld defect occurring, generally be to follow to adopt which kind of technology welding just to adopt this technology to reprocess.Because the situation of air low temperature separator job site is very complicated; pipe welding seam after the completion detects excessive defect through regular meeting; must reprocess the weld seam that exceeds standard for this reason; traditional method can only be to cut off the pipeline of reprocessing the position; and after rejected region is installed gasket ring, carry out rewelding and connect; because being installed, the gasket ring operation needs enough spaces; therefore also to select a suitable position that pipeline is disconnected as satellite interface usually in addition; weld again after so that the pipeline of installing gasket ring resetted; reprocess welding for one section thus; promptly become the welding of several times even tens times; not only increased material cost; prolonged the duration, the radiographic inspection workload of reprocessing simultaneously after the welding increases the wasting manpower and material resources synchronously.
Chinese patent discloses the welding connection structure (CN201269372Y) in a kind of aluminium and aluminium alloy pipe road, comprise that both sides need dock the aluminium and aluminium alloy pipe of connection, the interface of aluminium and aluminium alloy pipe becomes divided edge structure respectively, being provided with the gap between two joint faces becomes noncontact to cooperate, the link inner surface of both sides aluminium and aluminium alloy pipe touches with the stainless steel grommet respectively and cooperates, the grommet outer surface is equipped with groove corresponding to the interstitial site between the interface of both sides aluminium and aluminium alloy pipe, is sealedly and fixedly connected by welding formation between two connectivity ports of aluminium and aluminium alloy pipe and the grommet.This kind welding method is to adopt the grommet butt joint, thereby can effectively prevent the inside incomplete penetration defect that causes by force because of aluminium and aluminium alloy flowability when the high temperature, but this kind Welding Structure exists need cut off the pipeline of reprocessing the position and increase satellite interface equally grommet is installed, thereby cause the weld job amount to increase technical problems such as wasting manpower and material resources.
Summary of the invention
The utility model has mainly provided a kind of pipeline that need not to cut off the weld seam place of reprocessing can reprocess welding to the linerless pipeline of inner surface, it is good to reprocess quality, time saving and energy saving al-mg alloy pipe weld seam is reprocessed syndeton to reprocess operation process, solved when the al-mg alloy pipe weld seam that exists in the prior art is reprocessed and to have cut off the pipeline of reprocessing the position, even increase satellite interface, thereby cause the weld job amount to increase wasting manpower and material resources's etc. technical problem.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of al-mg alloy pipe weld seam is reprocessed syndeton, comprise the pipeline that links to each other by the girth joint butt joint, be provided with the opening of strip at the rejected region of described girth joint, the direction that described opening carries over girth joint distributes, in described opening, be provided with the liner identical with pipe material, on the lateral surface of described liner, be connected with draw ring, described draw ring extends in outside the opening, and the lateral surface of described liner is connected on the corresponding all around inner-walls of duct of opening.The welding seam part bit clear of at first needs being reprocessed is clean, cut the openning of a strip along bead direction at this position, then according to the size of opening, select for use the material identical or close to make a size suitably and the liner of draw ring is housed with pipeline, hand-held then draw ring an end of liner in opening is sent into pipeline, adjust the position of liner by draw ring, for weld seam can better be fused, firmly spur liner again and make it and inner-walls of duct applying as far as possible, in the pipeline outside that the two-end-point of liner is solid on the pipeline of opening two ends correspondence afterwards, remove draw ring again and just can carry out normal weld job opening.When adopting this structure that pipeline part or spot defect are reprocessed, need not pipeline is carried out the cutting of a place even many places, excessive radiographic inspection after welding again and welding, it is good to reprocess quality, reduces effectively the pipeline destroyed and the consumption in material and man-hour.
Draw ring can be the screwed screw rod of an end, and,, a pair of through hole is set at least on described liner as preferably by being threaded on the liner, described through hole symmetry is positioned at the two ends of liner, forms draw ring opening or sealing behind ring wire rope handling rope between every pair of through hole.After passing from another through hole again after one end of rope penetrated from a through hole on the liner, take mutually in the outside of liner at the two ends of rope or the back that links to each other forms a draw ring that is used to spur liner, only need untie an end that spurs rope behind the rope gently during dismounting, rope promptly skids off in two through holes, simple in structure, easy accessibility; The through hole that is symmetrically distributed can make the two ends stress equalization of liner, guarantees that liner and inner-walls of duct develop fully.
As more preferably, the diameter of described through hole is φ 2mm to φ 3mm.Reasonably through-hole diameter can not influence and reprocess welding quality.
As preferably, described liner is a rectangle sheet material, and the thickness of liner is 2mm to 4mm, big 6 mm to 10mm of the width of the width ratio open of liner, the length of liner and the equal in length of opening.The opening interworking of liner that rectangle sheet material is processed into and strip is made simple; Be unfavorable for when liner is blocked up that itself and inner-walls of duct develop, the long or wide meeting of liner causes the perk and influence the serviceability of air separation unit in pipeline of unnecessary part.
As preferably, the edge smooth transition of described liner.The edge of liner can guarantee the serviceability of air separation unit when keeping smooth transition.
Therefore, al-mg alloy pipe weld seam of the present utility model is reprocessed syndeton and had following advantage: the pipeline with diameter 711mm is an example, when poor weld length is 100mm, adopt this structure to carry out weld seam when reprocessing, only need to cut the long opening of a 100mm, then the opening of 100mm is welded and radiographic inspection gets final product at the poor weld place; And can only whole pipe be cut off the back at the poor weld place when using conventional methods gasket ring is installed, in order to be installed to pipe interior to gasket ring and to reset, sometimes also need to cut off an other place or many places pipeline as satellite interface, a 100mm's of place reprocesses defective thus, just become 2000mm even 4000mm many welding and radiographic inspection work, material consumption also rolls up thereupon.This structure is not only reprocessed at hoop linerless weld seam, also can reprocess linerless longitudinal seam defective, even can reprocess specific mother metal defective.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the vertical view that removes behind the draw ring shown in Figure 1.
The specific embodiment:
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
As shown in Figure 1, a kind of al-mg alloy pipe weld seam of the present utility model is reprocessed syndeton, comprise a pair of al-mg alloy pipe 5 that links to each other by girth joint 6 butt joints, the diameter of pipeline 5 is 711mm, it is the rejected region of 100mm that a length is arranged on girth joint 6, at first carrying over rejected region that the direction of girth joint 6 reprocesses needs when reprocessing, to cut out a 100mm long, width is the opening 1 of the strip of 6mm, make the suitable liner of a block size 2 according to the size of opening 1, liner 2 is to be the rectangle metallic plate that the almag plate cutting of 3 mm forms by thickness, the length of liner 2 is 102mm, wide is 14mm, remove wedge angle or burr on liner 2 edges, and two diameters of brill are 3mm through hole 3 on liner 2, through hole 3 is symmetrically distributed in the two ends of liner 2, corresponding to 3 rings of two through hole stainless steel wire that to wear a diameter be 2mm, the two ends of stainless steel wire form a draw ring 4 behind the lateral surface lap of liner 2, hand-held draw ring 4, with liner 2 in opening 1 is sent into pipeline 5, firmly spur draw ring 4 behind the position of adjustment liner 2, the lateral surface of liner 2 is connected on pipeline 5 inwalls of opening 1 periphery, again the two ends of liner 2 are fixed on the two ends of opening 1 by spot welding, take the junction of stainless steel wire apart, behind one end of pulling stainless steel wire stainless steel wire is removed, opening 1 is implemented ac argon arc weld and formed weld seam, carry out radiographic inspection to reprocessing weld seam at last.In order to guarantee to reprocess quality, in the rewelding termination process, to reduce the aluminium bits as far as possible and fall in the pipeline 5, to reduce pipeline 5 is polluted, and liner 2 is adjacent to as far as possible on pipeline 5 inwalls.Unsuccessful as repair for 1st time, can carry out repair for 2nd time according to said method according to actual conditions, do not get rid of the possibility that opening 1 is enlarged.
Specific embodiment described herein only is that design of the present utility model is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (6)
1. an al-mg alloy pipe weld seam is reprocessed syndeton, comprise the pipeline (5) that links to each other by girth joint (6) butt joint, it is characterized in that: the opening (1) that is provided with strip at the rejected region of described girth joint (6), the direction that described opening (1) carries over girth joint (6) distributes, in described opening (1), be provided with the liner (2) identical with pipeline (5) material, on the lateral surface of described liner (2), be connected with draw ring (4), described draw ring (4) extends in outside the opening (1), and the lateral surface of described liner (2) is connected on corresponding all around pipeline (5) inwall of opening (1).
2. al-mg alloy pipe weld seam according to claim 1 is reprocessed syndeton, it is characterized in that: a pair of through hole (3) is set on described liner (2) at least, described through hole (3) symmetry is positioned at the two ends of liner (2), forms draw ring (4) opening or sealing behind ring wire rope handling rope between every pair of through hole (3).
3. al-mg alloy pipe weld seam according to claim 1 and 2 is reprocessed syndeton, it is characterized in that: the diameter of described through hole (3) is φ 2mm to φ 3mm.
4. reprocess syndeton according to claim 1 or 2 or 3 described al-mg alloy pipe weld seams, it is characterized in that: described liner (2) is a rectangle sheet material, the thickness of liner (2) is 2mm to 4mm, big 6 mm to 10mm of width of the width ratio open (1) of liner (2), the equal in length of the length of liner (2) and opening (1).
5. reprocess syndeton according to claim 1 or 2 or 3 described al-mg alloy pipe weld seams, it is characterized in that: the edge smooth transition of described liner (2).
6. al-mg alloy pipe weld seam according to claim 4 is reprocessed syndeton, it is characterized in that: the edge smooth transition of described liner (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201047651U CN202053008U (en) | 2011-04-12 | 2011-04-12 | Connection structure used for repairing an aluminum magnesium alloy pipeline weld seam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201047651U CN202053008U (en) | 2011-04-12 | 2011-04-12 | Connection structure used for repairing an aluminum magnesium alloy pipeline weld seam |
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| CN202053008U true CN202053008U (en) | 2011-11-30 |
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| CN2011201047651U Expired - Fee Related CN202053008U (en) | 2011-04-12 | 2011-04-12 | Connection structure used for repairing an aluminum magnesium alloy pipeline weld seam |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848057A (en) * | 2012-09-27 | 2013-01-02 | 中国化学工程第三建设有限公司 | Method for reworking welding seam of aluminum and aluminum alloy |
| CN106425049A (en) * | 2016-12-06 | 2017-02-22 | 武汉天高熔接股份有限公司 | Submerged-arc welding deep penetration single-side welding technology of thick plates |
| CN107127492A (en) * | 2017-06-14 | 2017-09-05 | 中交第二航务工程局有限公司 | A kind of U ribs weld joint on inner side repair welding servicing unit |
| CN108161267A (en) * | 2018-01-30 | 2018-06-15 | 舞阳钢铁有限责任公司 | A kind of welding method of hot environment pipe welding port pulling force gusset |
| CN108555524A (en) * | 2018-04-03 | 2018-09-21 | 中铁山桥集团有限公司 | A kind of U-shaped angle of rib weld seam panel crack welding repair method |
-
2011
- 2011-04-12 CN CN2011201047651U patent/CN202053008U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848057A (en) * | 2012-09-27 | 2013-01-02 | 中国化学工程第三建设有限公司 | Method for reworking welding seam of aluminum and aluminum alloy |
| CN102848057B (en) * | 2012-09-27 | 2016-01-20 | 中国化学工程第三建设有限公司 | A kind of repair method of Al and Alalloy weld seam |
| CN106425049A (en) * | 2016-12-06 | 2017-02-22 | 武汉天高熔接股份有限公司 | Submerged-arc welding deep penetration single-side welding technology of thick plates |
| CN107127492A (en) * | 2017-06-14 | 2017-09-05 | 中交第二航务工程局有限公司 | A kind of U ribs weld joint on inner side repair welding servicing unit |
| CN107127492B (en) * | 2017-06-14 | 2018-06-19 | 中交第二航务工程局有限公司 | A kind of U ribs weld joint on inner side repair welding auxiliary device |
| CN108161267A (en) * | 2018-01-30 | 2018-06-15 | 舞阳钢铁有限责任公司 | A kind of welding method of hot environment pipe welding port pulling force gusset |
| CN108161267B (en) * | 2018-01-30 | 2020-08-21 | 舞阳钢铁有限责任公司 | Welding method for tensile rib plate of pipeline welded junction in high-temperature environment |
| CN108555524A (en) * | 2018-04-03 | 2018-09-21 | 中铁山桥集团有限公司 | A kind of U-shaped angle of rib weld seam panel crack welding repair method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20200412 |