CN105598601A - Welding process for engine entrained air guide pipe of airplane heating system - Google Patents
Welding process for engine entrained air guide pipe of airplane heating system Download PDFInfo
- Publication number
- CN105598601A CN105598601A CN201610099376.1A CN201610099376A CN105598601A CN 105598601 A CN105598601 A CN 105598601A CN 201610099376 A CN201610099376 A CN 201610099376A CN 105598601 A CN105598601 A CN 105598601A
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- CN
- China
- Prior art keywords
- transition duct
- new
- metal
- catheter sheath
- cylinder
- Prior art date
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
Abstract
The invention belongs to the welding technology and relates to an improvement in a welding method for an engine entrained air guide pipe of an airplane heating system. The welding method is characterized by including the steps that the structures of a transition guide pipe and a guide pipe sheath are corrected; a new transition guide pipe (5) and a metal bellow (2) are welded; a metal woven mesh (3) and the metal bellow (2) are welded; the new transition guide pipe (5) and a new guide pipe sheath (6) are welded. The improved welding method for the engine entrained air guide pipe of the airplane heating system is provided, protection on a weld bead is improved, cracking of the weld bead in the long-term engine vibration environment is avoided, and use safety is guaranteed; wires of the metal woven mesh are prevented from being fused and disengaged in the welding process.
Description
Technical field
The invention belongs to solder technology, relate to aircraft heating system engine bleed conduit welding methodImprove.
Background technology
The operation principle of aircraft heating system is: utilize engine bleed to heat for driving cabin and passenger cabin, send outIn motivation, be designed with bleed interface, need to utilize bleed conduit that engine bleed mouth is connected with the pipeline of heating.During due to engine operation, can produce vibration, engine has Vibration Absorption Designing when mounted, if use hard tubeConnect, the vibration of engine will be passed on aircaft configuration by hard tube, and the time has been grown will wrap up,Jeopardize aircraft safety. The structure of current a kind of aircraft heating system engine bleed conduit is referring to Fig. 1, itProtected by a metal bellows 2, two metal nets 3, two Geju City transition duct 1 and two Geju City conduitsCover 4 compositions. The maximum outside diameter of metal bellows 2 is d1, and the minimum outer diameter of metal bellows 2 is d2.The assembly structure at metal bellows 2 two ends is identical, specifically: metal net 3 is positioned at metal bellows 2Outside and be welded as entirety, old catheter sheath 4 is positioned at the outside of metal net 3, old transition duct 1Be an one end with bell-mouthed cylinder, bell-mouthed external diameter is d1, the termination of metal bellows 2 withOld transition duct 1 is welded as entirety with the termination of bell-mouthed one end and old catheter sheath 4, and above-mentioned zeroThe material of part is stainless steel. The welding method of above-mentioned bleed conduit is: first by the termination of metal bellows 2Diameter is processed as d1, then by old transition duct 1 with bell-mouthed one end, metal bellows 2, goldBelong to mesh grid 3 and old catheter sheath 4 adopts argon arc fusion welding to weld simultaneously. Its shortcoming is: after weldingThe welding bead forming is larger, not attractive in appearance, and welding bead forms rear outside does not have safeguard measure, and conduit is in use procedureMiddle welding bead there will be cracking in the long vibration environment of engine, and impact is used safety. Welding processIn because metal knitted twine is thinner, transition duct, metal bellows, metal net, catheter sheathThawing speed difference, often occur transition duct in welding process, metal bellows, metal net,Catheter sheath is not melted and twine fusing release failure.
Summary of the invention
The object of the invention is: propose a kind of improved aircraft heating system engine bleed conduit welding sideMethod, to increase the protection to welding bead, avoids welding bead to occur out in the long vibration environment of engineSplit, affect safety; In welding process, there is fusing release failure in the twine of stopping metal net.
Technical scheme of the present invention is: aircraft heating system engine bleed conduit welding method, institute weldsBleed conduit comprise a metal bellows 2, two metal nets 3, two transition duct and twoCatheter sheath; The maximum outside diameter of metal bellows 2 is d1, and the minimum outer diameter of metal bellows 2 is d2,The assembly structure at metal bellows 2 two ends is identical, specifically: metal net 3 is positioned at metal bellows 2Outside and be welded as entirety, catheter sheath is positioned at the outside of metal net 3, metal bellows 2One end of termination and transition duct and the termination of catheter sheath are welded as entirety, and the material of above-mentioned part is not forRust steel; It is characterized in that, the step of welding is as follows:
1, the structure of amendment transition duct and catheter sheath: the revised context of transition duct structure is: cancelThe horn mouth of old transition duct 1, makes new transition duct 5 become a cylinder, outside new transition duct 5Footpath is d2, and the wall thickness of new transition duct 5 is identical with the wall thickness of metal bellows 2; The amendment of catheter sheathContent is: new catheter sheath 6 is step cylinders, and it is by minor diameter cylinder 6a, major diameter cylinder 6c and companyConnect the transitional cylinder 6b composition of minor diameter cylinder 6a and major diameter cylinder 6c, minor diameter cylinder 6a, transitional cylinder 6b andMajor diameter cylinder 6c one shapes, the inner diameter D 2 of minor diameter cylinder 6a and the outside diameter d 2 of new transition duct 5Matched in clearance, the length of minor diameter cylinder 6a is less than the length of new transition duct 5, in major diameter cylinder 6cFootpath D1 is slightly larger than the external diameter of metal net 3;
2, weld new transition duct 5 and metal bellows 2: the first end face of processing metal bellows 2,Ensure that end face diameter is d2; Then adopt the method for argon arc welding by the termination of metal bellows 2 and new transitionOne end of conduit 5 is welded as entirety;
3, weld metal mesh grid 3 and metal bellows 2: adopt the method for spot welding by metal net 3Be welded as entirety with metal bellows 2;
4, weld new transition duct 5 and new catheter sheath 6: new catheter sheath 6 is assembled to new transition and leadsOn pipe 5, the major diameter cylinder 6c of new catheter sheath 6 is enclosed within the outside of metal net 3, employing solderingMethod is welded as entirety by the minor diameter cylinder 6a of new catheter sheath 6 with new transition duct 5.
Advantage of the present invention is: proposed a kind of improved aircraft heating system engine bleed conduit weldingMethod, has increased the protection to welding bead, has avoided welding bead to occur in the long vibration environment of engineCracking, has ensured use safety; In welding process, there is fusing and take off in the twine of having stopped metal netFault falls.
Brief description of the drawings
Fig. 1 is the structural representation of current a kind of aircraft heating system engine bleed conduit.
Fig. 2 is the structural representation that adopts the aircraft heating system engine bleed conduit of the inventive method weldingFigure.
Fig. 3 is the structural representation of new catheter sheath 6 in the present invention.
Detailed description of the invention
Below the present invention is described in further details. Referring to Fig. 1 to Fig. 3, aircraft heating system engineBleed conduit welding method, the bleed conduit welding comprises that a metal bellows 2, two are metal knittedNet 3, two transition duct and two catheter sheath; The maximum outside diameter of metal bellows 2 is d1, metalThe minimum outer diameter of bellows 2 is d2, and the assembly structure at metal bellows 2 two ends is identical, specifically: goldBelong to mesh grid 3 and be positioned at metal bellows 2 outsides and be welded as entirety, catheter sheath is positioned at metal knittedThe outside of net 3, the termination welding of the termination of metal bellows 2 and one end of transition duct and catheter sheathFor entirety, the material of above-mentioned part is stainless steel; It is characterized in that, the step of welding is as follows:
1, the structure of amendment transition duct and catheter sheath: the revised context of transition duct structure is: cancelThe horn mouth of old transition duct 1, makes new transition duct 5 become a cylinder, outside new transition duct 5Footpath is d2, and the wall thickness of new transition duct 5 is identical with the wall thickness of metal bellows 2; The amendment of catheter sheathContent is: new catheter sheath 6 is step cylinders, and it is by minor diameter cylinder 6a, major diameter cylinder 6c and companyConnect the transitional cylinder 6b composition of minor diameter cylinder 6a and major diameter cylinder 6c, minor diameter cylinder 6a, transitional cylinder 6b andMajor diameter cylinder 6c one shapes, the inner diameter D 2 of minor diameter cylinder 6a and the outside diameter d 2 of new transition duct 5Matched in clearance, the length of minor diameter cylinder 6a is less than the length of new transition duct 5, in major diameter cylinder 6cFootpath D1 is slightly larger than the external diameter of metal net 3;
2, weld new transition duct 5 and metal bellows 2: the first end face of processing metal bellows 2,Ensure that end face diameter is d2; Then adopt the method for argon arc welding by the termination of metal bellows 2 and new transitionOne end of conduit 5 is welded as entirety;
3, weld metal mesh grid 3 and metal bellows 2: adopt the method for spot welding by metal net 3Be welded as entirety with metal bellows 2;
4, weld new transition duct 5 and new catheter sheath 6: new catheter sheath 6 is assembled to new transition and leadsOn pipe 5, the major diameter cylinder 6c of new catheter sheath 6 is enclosed within the outside of metal net 3, employing solderingMethod is welded as entirety by the minor diameter cylinder 6a of new catheter sheath 6 with new transition duct 5.
Operation principle of the present invention is:
The first step, welded together with metal bellows 2 new transition duct 5, connects into one and hasFlexible sealing pipeline. Metal bellows 2 can free bend, for flexibly connecting of pipeline, subtractsStress is installed on education and correction for juvenile offenders road, and new transition duct 5 connects for pipeline;
Second step, is welded to metal net 3 on the first raised face at metal bellows 2 two ends goldBelong to mesh grid 3 for the protection of metal bellows 2, the twine of metal net 3 is thinner, adopts the weldering of spot weldingThe mode that connects is welded to metal net 3 on first raised face at two ends of metal bellows 2, routineMelting welding meeting twine is blown rapidly, cannot weld;
The 3rd step, is welded to new catheter sheath 6 in new transition duct 5 internal diameter of new catheter sheath 6Identical with the external diameter of new transition duct 5, this design can guarantee that laminating is good, and welding bead is little, allEven attractive in appearance. New catheter sheath 6 protects new transition duct 5 and the welding bead of metal bellows 2, anti-There is the damaged aircraft safety that affects in weld only;
Embodiment
The material of metal bellows, metal net, new transition duct, new catheter sheath is1Cr18Ni9Ti stainless steel, has good weldability, and same material fusing point is identical, welding performance the best.Metal bellows adopts argon arc fusion welding with new transition duct, and this region is wrapped in inside by new catheter sheath; GoldBelong to bellows and metal net and adopt spot welding, this region is wrapped in inside by new catheter sheath; Wavy metalGuan Yuxin transition duct adopts soldering. The conduit welding bead that adopts the present invention to process is little, evenly attractive in appearance,There is enough intensity and soft readjustment function.
Claims (1)
1. aircraft heating system engine bleed conduit welding method, the bleed conduit welding comprises oneMetal bellows (2), two metal nets (3), two transition duct and two catheter sheath; MetalThe maximum outside diameter of bellows (2) is d1, and the minimum outer diameter of metal bellows (2) is d2, metal bellows (2)The assembly structure at two ends is identical, specifically: metal net (3) be positioned at metal bellows (2) outside andBe welded as entirety, catheter sheath is positioned at the outside of metal net (3), the termination of metal bellows (2) withOne end of transition duct and the termination of catheter sheath are welded as entirety, and the material of above-mentioned part is stainless steel;It is characterized in that, the step of welding is as follows:
1.1, the structure of amendment transition duct and catheter sheath: the revised context of transition duct structure is: getThe disappear horn mouth of old transition duct (1), makes new transition duct (5) become a cylinder, new transition duct (5)External diameter be d2, the wall thickness of new transition duct (5) is identical with the wall thickness of metal bellows (2); Catheter sheathRevised context be: new catheter sheath (6) is a step cylinder, and it is by minor diameter cylinder (6a), major diameterCylinder (6c) and transitional cylinder (6b) composition that is connected minor diameter cylinder (6a) and major diameter cylinder (6c), minor diameter cylinder(6a), transitional cylinder (6b) and major diameter cylinder (6c) one shape, the inner diameter D 2 of minor diameter cylinder (6a) withOutside diameter d 2 matched in clearance of new transition duct (5), the length of minor diameter cylinder (6a) is less than new transition duct (5)Length, the inner diameter D 1 of major diameter cylinder (6c) is slightly larger than the external diameter of metal net (3);
1.2, weld new transition duct (5) and metal bellows (2): first processing metal bellows (2)End face, ensures that end face diameter is d2; Then the method that adopts argon arc welding by the termination of metal bellows (2) withOne end of new transition duct (5) is welded as entirety;
1.3, weld metal mesh grid (3) and metal bellows (2): adopt the method for spot welding by metal knittedNet (3) is welded as entirety with metal bellows (2);
1.4, weld new transition duct (5) and new catheter sheath (6): new catheter sheath (6) is assembled to newlyTransition duct (5) is upper, and the major diameter cylinder (6c) of new catheter sheath (6) is enclosed within the outside of metal net (3),Adopt the method for soldering that the minor diameter cylinder (6a) of new catheter sheath (6) and new transition duct (5) are welded as wholeBody.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610099376.1A CN105598601B (en) | 2016-02-23 | 2016-02-23 | Aircraft heating system engine bleed conduit welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610099376.1A CN105598601B (en) | 2016-02-23 | 2016-02-23 | Aircraft heating system engine bleed conduit welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105598601A true CN105598601A (en) | 2016-05-25 |
| CN105598601B CN105598601B (en) | 2018-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610099376.1A Active CN105598601B (en) | 2016-02-23 | 2016-02-23 | Aircraft heating system engine bleed conduit welding method |
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| Country | Link |
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| CN (1) | CN105598601B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110465717A (en) * | 2019-06-28 | 2019-11-19 | 秦皇岛市泰德管业科技有限公司 | A kind of TIG arc brazing welding method |
| CN113864057A (en) * | 2021-10-27 | 2021-12-31 | 中国航发沈阳发动机研究所 | Air-entraining structure in double-layer casing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2670609Y (en) * | 2003-08-12 | 2005-01-12 | 董菁荣 | Flexible metal bellows of vehicle exhaust pipe |
| CN201475531U (en) * | 2009-09-02 | 2010-05-19 | 航天晨光股份有限公司 | Oxygen blast metal hose |
| KR101260229B1 (en) * | 2011-11-03 | 2013-05-03 | 신동해(주) | Vibration-absorbing tube for refrigerating compressor |
| CN203215122U (en) * | 2013-03-23 | 2013-09-25 | 浙江鸿森机械有限公司 | Double-welded corrugated pipe with single welding spot |
| CN203703441U (en) * | 2013-12-01 | 2014-07-09 | 太原航空仪表有限公司 | Bellow type universal joint |
| CN204572155U (en) * | 2014-12-30 | 2015-08-19 | 浙江乐鼎波纹管有限公司 | Protection type flexible corrugated pipe for automobile exhaustion |
-
2016
- 2016-02-23 CN CN201610099376.1A patent/CN105598601B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2670609Y (en) * | 2003-08-12 | 2005-01-12 | 董菁荣 | Flexible metal bellows of vehicle exhaust pipe |
| CN201475531U (en) * | 2009-09-02 | 2010-05-19 | 航天晨光股份有限公司 | Oxygen blast metal hose |
| KR101260229B1 (en) * | 2011-11-03 | 2013-05-03 | 신동해(주) | Vibration-absorbing tube for refrigerating compressor |
| CN203215122U (en) * | 2013-03-23 | 2013-09-25 | 浙江鸿森机械有限公司 | Double-welded corrugated pipe with single welding spot |
| CN203703441U (en) * | 2013-12-01 | 2014-07-09 | 太原航空仪表有限公司 | Bellow type universal joint |
| CN204572155U (en) * | 2014-12-30 | 2015-08-19 | 浙江乐鼎波纹管有限公司 | Protection type flexible corrugated pipe for automobile exhaustion |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110465717A (en) * | 2019-06-28 | 2019-11-19 | 秦皇岛市泰德管业科技有限公司 | A kind of TIG arc brazing welding method |
| CN113864057A (en) * | 2021-10-27 | 2021-12-31 | 中国航发沈阳发动机研究所 | Air-entraining structure in double-layer casing |
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| Publication number | Publication date |
|---|---|
| CN105598601B (en) | 2018-01-16 |
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