CN109249110B - High-strength welding device for copper-aluminum pipeline - Google Patents
High-strength welding device for copper-aluminum pipeline Download PDFInfo
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- CN109249110B CN109249110B CN201811357581.9A CN201811357581A CN109249110B CN 109249110 B CN109249110 B CN 109249110B CN 201811357581 A CN201811357581 A CN 201811357581A CN 109249110 B CN109249110 B CN 109249110B
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- 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
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- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
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- 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
- B23K9/32—Accessories
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- 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
- B23K9/32—Accessories
- B23K9/325—Devices for supplying or evacuating shielding gas
Abstract
The invention relates to a high-strength welding device for a copper-aluminum pipeline. The technical scheme is as follows: the transition welding part is arranged in the welding actuator, the welding actuator is fixed on the welding bracket, one end of the transition welding part corresponds to the copper pipeline, and the other end of the transition welding part corresponds to the aluminum pipeline; the outer side of the copper pipeline and the outer side of the aluminum pipeline are respectively connected with a pneumatic propulsion device, the copper pipeline and the aluminum pipeline are pushed to move towards the transition welding part through the pneumatic propulsion devices, meanwhile, the copper pipeline is welded with one end of the transition welding part through a butt welding machine, and the aluminum pipeline is welded with the other end of the transition welding part; the welding executor is connected with an argon protection device, and argon protection is carried out on the welding process through the argon protection device. The beneficial effects are that: through the preparation of transition welding spare, reduce the welding degree of difficulty, with the transition welding spare as an organic whole of two kinds of different metal material preparation to make copper pipeline and aluminum pipe line can weld with the pure copper portion of transition welding spare respectively and weld with pure aluminium portion, thereby make welding strength promote by a wide margin.
Description
Technical Field
The invention relates to a device and a method for welding a copper-aluminum pipeline, in particular to a high-strength welding device for the copper-aluminum pipeline.
Background
The welding process of the copper-aluminum pipeline refers to a process that a copper material and an aluminum material are connected into a whole through a welding process, the welding is essentially a process that a connected individual part is melted through the heating of a metal body and is cooled, in the welding process of the copper and the aluminum, the melting points of the copper and the aluminum are different, the temperature of the copper is 1083 ℃ and the temperature of the aluminum is 660 ℃, and the existing welding process directly welds the copper pipeline and the aluminum pipeline together, so that the welding requirement of most processes can be met, but if the welding requirement is too high in quality or the welding requirement is a workpiece in a special shape such as a thin and long workpiece, the welding requirement cannot be met.
The Chinese patent document with the publication number of 203738241U and the patent name of 'a copper-aluminum butt welder' aims at solving the problems that copper and aluminum are two materials with different melting points and great difference, and the welding efficiency is low by adopting the traditional welding method. The utility model discloses a copper aluminium butt welder, including double-shaft motor, the power output shaft of upside and the power output shaft of downside of double-shaft motor on install the driving gear respectively, every driving gear and driven gear meshing, wherein, be located and install thrust bearing below the driven gear of lower part, above-mentioned installation aluminum pipe clamping device is located upper portion driven gear and steering gear meshing, steering gear's the higher authority installation pressure device, below installation copper pipe clamping device, copper pipe clamping device on be provided with the electrode, the electrode pass through the connection of electric lines transformer. The utility model discloses a welding efficiency is high, and the loss is low, and is pollution-free, the environmental protection.
The Chinese patent document publication number is 207771081U, and the patent name is 'a copper-aluminum tube butt welding machine', which comprises a frame; l-shaped plate: the device comprises a transverse plate and a longitudinal plate, wherein the transverse plate is fixedly connected with the side surface of a rack, and the longitudinal plate is vertically fixed on the surface of the transverse plate; a guide shaft; welding the assembly; a driving component: the second fixing plate is fixedly connected with the lateral surface of the transverse plate through a second cylinder, and the second cylinder drives the second fixing plate to move along the direction of the guide shaft; an external power supply: the first upper electrode and the second upper electrode are respectively electrically connected with the anode and the cathode of an external power supply. The aluminum pipe and the copper pipe are sleeved, the joint of the aluminum pipe and the copper pipe is melted by resistance heat, the interface surface is combined under the action of interatomic binding force, the welding layer is thick, the welding seam strength is high, and the welding quality is good; and solder is not needed, so that the cost is saved and the welding efficiency is high. However, there is a problem that high quality welding is not satisfied since aluminum is welded to aluminum instead of copper.
Disclosure of Invention
The invention aims to provide a high-strength welding device for copper-aluminum pipelines, aiming at the defects in the prior art, the manufactured transition welding piece is utilized to convert the original welding of two metals with different melting points into the welding of two same materials, so that the welding quality is improved, and the high-quality welding requirement or the welding requirement of thin and long workpieces is met.
The invention provides a high-strength welding device for copper-aluminum pipelines, which adopts the technical scheme that: the device comprises a butt welding machine (48), a thermal relay (45), a welding actuator (49), a transition welding part (21), a welding bracket (43), an argon protection device and a pneumatic propulsion device, wherein the transition welding part (21) is arranged in the welding actuator (49), the welding actuator (49) is fixed on the welding bracket (43), one end of the transition welding part (21) corresponds to a copper pipeline (27), and the other end of the transition welding part corresponds to an aluminum pipeline (29); the outer side of the copper pipeline (27) and the outer side of the aluminum pipeline (29) are respectively connected with a pneumatic propulsion device, the copper pipeline (27) and the aluminum pipeline (29) are pushed by the pneumatic propulsion devices to move to the transition welding part (21), meanwhile, a butt welding machine (48) is used for welding the copper pipeline (27) and one end of the transition welding part (21), and the aluminum pipeline (29) and the other end of the transition welding part (21) are welded; welding executor (49) are connected argon gas protection device, carry out argon gas protection to the welding process through argon gas protection device, and thermal relay (45) are through hot argon output tube (44) intercommunication welding part, through the break-make of the temperature control thermal relay (45) of argon gas.
Preferably, the butt welding machine (48) comprises a silicon steel sheet (1), a primary coil (2), a binding post (3), a current regulating armature (4), a silicon steel sheet fixing support (5), a primary coil (6), a secondary coil (7), a connecting block (8), a regulating screw rod (9), a regulating handle (10), a guide rail (11) and a lifting guide rail fixing frame (12), wherein the silicon steel sheet (1) is installed in the middle of the silicon steel sheet fixing support (5), the primary coil (2) is wound on the silicon steel sheet (1), the guide rail (11) and a secondary coil winding rod are respectively installed on two sides of the silicon steel sheet (1), the current regulating armature (4) is respectively installed in the guide rail (11), and the current regulating armature (4) is matched and regulated through the regulating screw rod (9) and the lifting guide rail fixing frame (12) which are connected at the upper part; and the secondary coil winding rod is respectively wound with a first secondary coil (6) and a second secondary coil (7).
Preferably, the welding actuator (49) comprises a transition welding part fixing device, a copper pipeline pushing device and an aluminum pipeline pushing device, wherein the copper pipeline pushing device is arranged at one end of the transition welding part fixing device, and the aluminum pipeline pushing device is arranged at the other end of the transition welding part fixing device; transition welding spare fixing device includes tetrafluoro centre gripping lamella (13), transition carrier (14), clamping bolt (15), pressure wire dish (17), clamp bolt (18), ground wire flexible pad (19), and the outside of transition welding spare (21) is equipped with tetrafluoro centre gripping lamella (13), and tetrafluoro centre gripping lamella (13) pass through clamping bolt (15) fixed connection with transition carrier (14), and the both ends of transition carrier (14) are passed through ground wire flexible pad (19), ground wire terminal (16) and are fixed through clamp bolt (18) with welding arc lag (46).
Preferably, the copper pipeline pushing device comprises a feeding cylinder (23), a sealing piston (24), a running track (25), a pneumatic control pipeline (26), a pneumatic pipeline (28), a second tetrafluoro clamping flap (50), a second transition carrier (51) and a second clamping bolt (52), wherein the second tetrafluoro clamping flap (50) is sleeved on the outer side of the copper pipeline (27), the second tetrafluoro clamping flap (50) is fixedly connected with the second transition carrier (51) sleeved on the outer side through the second clamping bolt (52), and the pneumatic cylinder consisting of the feeding cylinder (23) and the sealing piston (24) is arranged on the outer side of the second transition carrier (51); the second transition carrier (51) is connected with the pneumatic cylinder through the operation track (25), the inner end of the operation track (25) is movably connected with a wire pressing disc (17) of the transition welding part fixing device, and when the compressed gas pushes the sealing piston (24), the second transition carrier (51) fixed on the outer wall of the copper pipeline is pushed to be close to the transition welding part (21) along the operation track (25).
Preferably, the lower end of the second transition carrier (51) is connected with the terminal (i) through a polytetrafluoroethylene ring, a fixed lantern ring (47) and an argon outlet pipe (22) are arranged on the lower side of the polytetrafluoroethylene ring, and the outer end of the argon outlet pipe (22) is connected with a hot argon output pipe (44); the argon gas outlet pipe (22) and the hot argon gas outlet pipe (44) lead out the heated argon gas between the copper pipeline and the transition welding part to a thermal relay (45).
Preferably, the inner end of the ground wire binding post (16) is provided with a ground wire contact (20), and one side of the welding arc protection sleeve (46) is provided with a wire pressing disc (17).
Preferably, the running rail (25) is made of polytetrafluoroethylene, so that current of copper pipelines or aluminum pipelines is prevented from being conducted to the transition welding piece (21).
Preferably, the transition welding part (21) comprises a pure copper part (L1), a pure aluminum part (L2) and a copper-aluminum mixed part (L3), wherein the length of the pure copper part (L1) is larger than that of the pure aluminum part (L2), and welding auxiliary parts (21.1) are arranged at the outer ends of the pure copper part (L1) and the pure aluminum part (L2).
Preferably, foretell welding auxiliary part (21.1) includes that outside most advanced discharge ring (21.1.1), middle part borax heat attach district (21.1.2) and inside prevent deforming ring (21.1.3), outside most advanced discharge ring (21.1.1) outwards stretch out the length be greater than inside prevent deforming ring (21.1.3) outwards stretch out the length, and outside most advanced discharge ring (21.1.1) and inside prevent being equipped with between deforming ring (21.1.3) that middle part borax heat attach district (21.1.2), middle part borax heat attach district (21.1.2) be round arc groove shape.
Preferably, foretell welding auxiliary part (21.1) includes that outside most advanced discharge ring (21.1.1), middle part borax attach district (21.1.2) and inside prevent deforming ring (21.1.3), outside most advanced discharge ring (21.1.1) outwards stretch out the length be greater than inside prevent deforming ring (21.1.3) outwards stretch out the length, and be equipped with between outside most advanced discharge ring (21.1.1) and inside prevent deforming ring (21.1.3) that middle part borax attaches district (21.1.2) with heat, middle part borax heat attaches district (21.1.2) and constitutes the one round for a plurality of hemisphere grooves.
The invention has the beneficial effects that: 1. through the preparation of transition welding spare, reduce the welding degree of difficulty, the concrete expression is in: firstly, two different metal materials are manufactured into an integrated transition welding part, one end of the transition welding part is a pure copper part, and the other end of the transition welding part is a pure aluminum part, so that a copper pipeline and an aluminum pipeline can be respectively welded with the pure copper part and the pure aluminum part of the transition welding part, and the welding strength is greatly improved; welding auxiliary parts at two ends of the transition welding part adopt a special structure, so that welding is facilitated, the forming precision of a welding opening is higher, and the control is easier; 2. the welding actuator is provided with a running track made of polytetrafluoroethylene, and the copper pipeline or the aluminum pipeline is connected with the transition welding part, so that the copper pipeline or the aluminum pipeline is pushed to be close to the transition welding part under the pushing of compressed air, then the copper pipeline and the aluminum pipeline are respectively communicated with two secondary coils separated from the butt welding machine, the welding of the copper pipeline and a pure copper part of the transition welding part and the welding of the aluminum pipeline and a pure aluminum part of the transition welding part are realized under the arc discharge principle, the welding of the same metal is finally realized, and the welding strength is improved; 3. the gas compressor pushes the copper pipeline and the aluminum pipeline to be close to the transition welding part, so that the body health of welding workers is facilitated; 4. the implementation of argon protective gas ensures that the craters formed by aluminum and copper are not easily oxidized, thereby ensuring the welding quality; 5. the thermal relay is matched with the hot argon gas, so that the controllability of the whole welding process is greatly improved, and the welding quality is more reliable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of a butt welding machine;
FIG. 3 is a schematic view of a welding actuator;
FIG. 4 is a schematic structural view of a transition weldment;
FIG. 5 is a cross-sectional view of a weld aid at the end of a first transition weldment;
FIG. 6 is a cross-sectional view of a weld aid at the end of a second transition weldment;
in the upper diagram: silicon steel sheet 1, primary coil 2, binding post 3, current regulating armature 4, silicon steel sheet fixing bracket 5, primary coil 6, secondary coil 7, connecting block 8, regulating screw 9, regulating handle 10, guide rail 11, lifting guide rail fixing bracket 12, tetrafluoro clamping flap 13, transition carrier 14, clamping bolt 15, ground wire binding post 16, wire pressing disc 17, pressing bolt 18, ground wire flexible pad 19, ground wire contact 20, transition welding part 21, argon outlet pipe 22, feeding cylinder 23, sealing piston 24, running rail 25, pneumatic control pipeline 26, copper pipeline 27, pneumatic pipeline 28, aluminum pipeline 29, air compressor 30, stop valve 31, safety valve 32, first pressure gauge 33, air storage tank 34, blind plug 35, manual reversing valve 36, handle 37, welding pneumatic control pipeline 38, argon protection gas pipeline 39, argon gas bottle 40, argon stop valve 41, second pressure gauge 42, safety valve 42, argon protection gas bottle 34, argon protection gas bottle 40, argon gas bottle stop valve 41, and the like, Welding support 43, hot argon output tube 44, thermal relay 45, welding arc lag 46, fixed lantern ring 47, butt welder 48, welding executor 49, second tetrafluoro centre gripping lamella 50, second transition carrier 51, second centre gripping bolt 52, welding auxiliary part 21.1, outside point discharge ring 21.1.1, middle part borax heat attach district 21.1.2 and inside anti-deformation ring 21.1.3, hemisphere groove 21.1.4.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to the attached drawing 1, the invention provides a high-strength welding device for copper-aluminum pipelines, which adopts the technical scheme that: the device comprises a butt welding machine 48, a thermal relay 45, a welding actuator 49, a transition welding part 21, a welding bracket 43, an argon protection device and a pneumatic propulsion device, wherein the transition welding part 21 is arranged in the welding actuator 49, the welding actuator 49 is fixed on the welding bracket 43, one end of the transition welding part 21 corresponds to a copper pipeline 27, and the other end of the transition welding part corresponds to an aluminum pipeline 29; the outer side of the copper pipeline 27 and the outer side of the aluminum pipeline 29 are respectively connected with a pneumatic propulsion device, the copper pipeline 27 and the aluminum pipeline 29 are pushed by the pneumatic propulsion device to move to the transition welding part 21, meanwhile, the butt welding machine 48 welds the copper pipeline 27 and one end of the transition welding part 21, and welds the aluminum pipeline 29 and the other end of the transition welding part 21; the welding executor 49 is connected with an argon protection device, argon protection is carried out on the welding process through the argon protection device, the thermal relay 45 is communicated with the welding part through a thermal argon output pipe 44, and the on-off of the thermal relay 45 is controlled through the temperature of argon.
Referring to the attached figure 2, the butt welding machine 48 of the invention comprises a silicon steel sheet 1, a primary coil 2, a binding post 3, a current regulating armature 4, a silicon steel sheet fixing support 5, a primary coil 6, a secondary coil 7, a connecting block 8, a regulating screw 9, a regulating handle 10, a guide rail 11 and a lifting guide rail fixing support 12, wherein the silicon steel sheet 1 is installed in the middle of the silicon steel sheet fixing support 5, the primary coil 2 is wound on the silicon steel sheet 1, the guide rail 11 and a secondary coil winding rod are respectively installed on two sides of the silicon steel sheet 1, the current regulating armature 4 is respectively installed in the guide rail 11, and the current regulating armature 4 is matched and regulated through the regulating screw 9 and the lifting guide rail fixing support 12 which are connected at; and the secondary winding rod is respectively wound with a first secondary winding 6 and a second secondary winding 7, and it needs to be explained that: the melting point of copper is 1083 degrees, the melting point of aluminum is 660 degrees, so that the requirement of the melting points of two metals is met by adjusting two coils, and the length of the large-current adjusting armature 4 is adjusted by adjusting the adjusting screw 9 on one side of the primary coil, so that the contact ratio is increased, the current is increased, the magnetic flux is increased, and the requirement of welding energy of a copper pipeline is met; the armature is adjusted by the current on one side of the secondary coil, so that the coincidence degree is reduced, the current is reduced, and the magnetic flux is reduced, thereby meeting the welding energy requirement of the aluminum pipeline.
Referring to fig. 3, the welding actuator 49 of the present invention includes a transition weld assembly fixing device, a copper wire pushing device and an aluminum wire pushing device, wherein the copper wire pushing device is provided at one end of the transition weld assembly fixing device, and the aluminum wire pushing device is provided at the other end; the transition welding part fixing device comprises a tetrafluoro clamping flap 13, a transition carrier 14, a clamping bolt 15, a wire pressing disc 17, a compression bolt 18 and a ground wire flexible pad 19, the tetrafluoro clamping flap 13 is arranged on the outer side of the transition welding part 21, the tetrafluoro clamping flap 13 and the transition carrier 14 are fixedly connected through the clamping bolt 15, and two ends of the transition carrier 14 are fixed with a welding arc protection sleeve 46 through the ground wire flexible pad 19 and a ground wire binding post 16 through the compression bolt 18.
The copper pipeline pushing device comprises a feeding cylinder 23, a sealing piston 24, a running track 25, a pneumatic control pipeline 26, a pneumatic pipeline 28, a second tetrafluoro clamping flap 50, a second transition carrier 51 and a second clamping bolt 52, wherein the second tetrafluoro clamping flap 50 is sleeved on the outer side of a copper pipeline 27, the second tetrafluoro clamping flap 50 is fixedly connected with the second transition carrier 51 sleeved on the outer side through the second clamping bolt 52, and the pneumatic cylinder consisting of the feeding cylinder 23 and the sealing piston 24 is arranged on the outer side of the second transition carrier 51; the second transition carrier 51 is connected with the pneumatic cylinder through the operation track 25, the inner end of the operation track 25 is movably connected with the wire pressing disc 17 of the transition welding part fixing device, and when the compressed gas pushes the sealing piston 24, the second transition carrier 51 fixed on the outer wall of the copper pipeline is pushed to be close to the transition welding part 21 along the operation track 25.
The lower end of the second transition carrier 51 is connected with the terminal i through a polytetrafluoroethylene ring, a fixed lantern ring 47 and an argon outlet pipe 22 are arranged on the lower side of the polytetrafluoroethylene ring, and the outer end of the argon outlet pipe 22 is connected with a hot argon output pipe 44; the argon outlet pipe 22 and the hot argon outlet pipe 44 conduct heated argon between the copper line and the transition weld out into a thermal relay 45.
The inner end of the ground wire binding post 16 is provided with a ground wire contact 20, and one side of the welding arc protection sleeve 46 is provided with a wire pressing disc 17; the running rail 25 is made of polytetrafluoroethylene, so that current of a copper pipeline or an aluminum pipeline is prevented from being conducted to the transition welding part 21.
In addition, the structure of the aluminum pipeline pushing device is the same as that of the copper pipeline pushing device, and the difference is that the melting point of aluminum is low, so that the current from the butt welding machine is small, two independent loops are formed for the butt welding machine, the copper pipeline is welded with the pure copper part of the transition welding piece, the aluminum pipeline is welded with the pure aluminum part of the transition welding piece, and the strong welding strength is realized.
Referring to fig. 4, the transition welding part 21 of the present invention includes a pure copper part L1, a pure aluminum part L2, and a copper-aluminum mixed part L3, wherein the length of the pure copper part L1 is greater than the length of the pure aluminum part L2, and welding auxiliary parts 21.1 are disposed at the outer ends of the pure copper part L1 and the pure aluminum part L2.
In addition, referring to fig. 4 and 5, welding auxiliary portion 21.1 includes that outer tip discharge ring 21.1.1, middle part borax thermally adhere district 21.1.2 and inside shape ring 21.1.3 of preapring for an unfavorable turn of events, the length that outer tip discharge ring 21.1.1 outwards stretched out is greater than the length that inside shape ring 21.1.3 outwards stretched out, and is equipped with middle part borax thermally adhere district 21.1.2 between outer tip discharge ring 21.1.1 and the inside shape ring 21.1.3 of preapring for an unfavorable turn of events, and middle part borax thermally adheres district 21.1.2 is the shape of a round arc groove.
The principle of the special structure of the welding aids 21.1 is:
1. in the manufacturing process of the transition welding part 21, the arc of the end part is kept slightly convex outside, slightly low inside and arc-shaped special welding interface in the middle, and the fundamental reason for doing so is that: determined by the arc discharge principle and the welding principle of metals. When the craters are close to each other, a so-called "tip discharge" is formed due to the accumulation of charge, in which the outer protruding outer tip discharge ring 21.1.1 discharges and melts first with the outer edge of the copper or aluminum pipeline, and the central borax heat attachment zone 21.1.2 in the center of the transition weldment 21 takes the shape of an arc-shaped groove, which becomes the best weld pool, and at the same time, as the applied forces and temperature increase, so that a perfect weld is formed, namely: can weld through and be unlikely to weld and leak, simultaneously, the extension length of inside shape ring 21.1.3 of preapring for an unfavorable turn of events is less than outside point discharge ring 21.1.1, like this, makes inside shape ring 21.1.3 of preapring for an unfavorable turn of events can not warp to guarantee that the internal diameter of the crater of welded copper aluminium pipe can not be outstanding, the variable of avoiding influencing the inside passageway is less.
The invention provides a using method of a high-strength welding device for a copper-aluminum pipeline, which comprises the following steps:
1. manufacturing transition weldments 21 with different diameters for standby according to different pipe diameter requirements, wherein each transition weldment 21 comprises a pure copper part L1, a pure aluminum part L2 and a copper-aluminum mixing part L3, the length of the pure copper part L1 is larger than that of the pure aluminum part L2, and welding auxiliary parts 21.1 are arranged at the outer ends of the pure copper part L1 and the pure aluminum part L2;
2. installing the transition weldment 21 into the welding actuator:
(1) covering the tetrafluoro clamping flap 13 on the transition welding part 21, then putting the tetrafluoro clamping flap into the transition carrier 14, and clamping the tetrafluoro clamping flap by using the clamping bolt 15;
(2) the two ends are respectively provided with a ground wire flexible pad 19 and a welding arc protective sleeve 46 which are pressed and fixed through a pressing bolt 18;
(3) integrally fixed to the welding bracket 43;
3. connecting the welding parts at the two ends:
(1) the feeding cylinder 23 and the sealing piston 24 are assembled into a pneumatic cylinder, and an upper running guide rail 25 is installed;
(2) two pneumatic cylinders are sleeved on the copper pipeline 27 and the aluminum pipeline 29 respectively, and then a second transition carrier 51, a second tetrafluoro clamping flap 50 and a second clamping bolt 52 are fixed on the copper pipeline 27 and the aluminum pipeline 29 through a running guide rail 25;
(3) screwing down the running guide rail 25 and connecting the running guide rail to the transition carriers 14 at the two ends of the transition welding part 21, so that the welding parts at the two ends are connected, and the manufacturing of the welding actuator is finished;
4. wiring: respectively connecting a first coil and a second coil of a butt welder 48 to binding posts of a copper pipeline and an aluminum pipeline of a welding actuator, communicating argon of the welding actuator with a thermal relay 45 through an argon outlet pipe 22 and a hot argon outlet pipe 44, and controlling the on-off of the thermal relay 45 through the temperature of the argon; different welding temperature requirements for welding the copper pipeline and the aluminum pipeline are met through different currents output by the two secondary coils;
in addition, an argon bottle 40 is communicated with the two ends of the transition welding part 21 of the welding actuator through an argon protective gas pipeline 39; connecting an air compressor 30 to pneumatic cylinders of copper and aluminum lines at both ends of the weld actuator via an air reservoir 34 and a weld pneumatic control line 38, pushing the copper and aluminum lines closer to the transition weldment 21;
5. the welding process is as follows:
(1) starting the air compressor 30 to make the pressure in the air storage tank 34 reach the working standard;
(2) closing the cut-off valve 31 and stopping the operation of the air compressor 30;
(3) starting a start button of the butt welding machine 48 to enable the butt welding machine 48 to be in a standby working state;
(4) opening an argon stop valve 41 to enable argon in an argon bottle 40 to continuously supply gas to two ends of a transition welding part 21 of the welding actuator;
(5) after the air at the position to be welded is replaced by argon, the handle 37 is operated to enable the welding parts at the two ends to approach the transition welding part 21, when the copper pipeline or the aluminum pipeline and the transition welding part 21 reach a proper distance, arc discharge is generated, high temperature is generated, the joint of the copper pipeline 27, the aluminum pipeline 29 and the transition welding part 21 generates high temperature and is melted, meanwhile, the surrounding argon is heated, at the moment, the argon is output as high-temperature gas by a welding actuator, when the high-temperature argon enters the thermal relay 45 and reaches a set temperature, the thermal relay 45 is automatically powered off, at the moment, the copper pipeline 27 and the aluminum pipeline 29 continue to approach the transition welding part 21 and contact with the transition welding part under the action of the compressed gas at the two ends, and then, the temperature at the two ends of the transition welding part 21 is reduced due to the power off of the thermal relay 45, so;
8. collecting the pipe:
firstly, cutting off the power supply of the butt welding machine 48;
closing the argon stop valve 41 and stopping the supply of argon;
thirdly, the handle 37 is pushed to the opposite direction, so that the compressed gas of the pneumatic cylinder is discharged into the air from the O cavity, and the force applied by welding is relieved;
fourthly, respectively loosening the copper pipeline 27, the aluminum pipeline 29 and the clamping bolts on the outer wall of the transition welding part 21 so as to release the clamping force at three positions;
fifthly, the welded copper pipeline and the welded aluminum pipeline are collected.
It should be noted that:
the wiring in the step 4 comprises the following specific steps:
1) wire connection: firstly welding the welding ends c-i, d-g, e-h and f-j in the following sequence: the welding actuator, the thermal relay 45, the butt welder and the two power transmission binding posts a and b are connected to realize two paths of current with the same source, and because of the same phase and the same frequency, the loops are respectively connected to g and h of a transition welding part, so that respective loops are formed;
2) and connecting a protection gas circuit: firstly, connecting a K port of a welding actuator with a shielding gas inlet line 39, and then connecting the K port of the welding actuator with a second pressure gauge 42, an argon stop valve 41 and an argon bottle 40; the welding actuator is connected with a thermal relay 45 by a hot argon output pipe 44 and an argon outlet pipe 22;
3) and connecting a control gas circuit:
(1) tapping the weld control line 38 from the end of the weld actuator to the position of the manual diverter valve 36;
(2) the cavity B of the manual reversing valve 36 is blocked by a blind plug 35, then a welding control pipeline 38 is connected to the cavity A, and the cavity P is connected with a first pressure gauge 33;
(3) the air storage tank 34 is connected next, and the stop valve 31 and the air compressor 30 are connected, so that the whole process is completed.
Example 2, the difference from example 1 is: referring to fig. 6, the welding auxiliary part 21.1 of the transition welding part 21 of the present invention adopts another structure, specifically: foretell welding auxiliary part 21.1 includes that outside point discharge ring 21.1.1, middle part borax thermally attached district 21.1.2 and inside shape ring 21.1.3 of preapring for an unfavorable turn of events, the length that outside point discharge ring 21.1.1 outwards stretched out is greater than the outside length that stretches out of inside shape ring 21.1.3 of preapring for an unfavorable turn of events, and is equipped with middle part borax thermally attached district 21.1.2 between outside point discharge ring 21.1.1 and the inside shape ring 21.1.3 of preapring for an unfavorable turn of events, and middle part borax thermally attached district 21.1.2 constitutes the round for a plurality of hemisphere shape grooves 21.1.4.
This structure also can satisfy that the outside convex outside point discharge ring 21.1.1 discharges with the outside edge of copper pipeline or aluminium pipeline at first, and melt, and middle part borax heat attaches district 21.1.2 at the center of transition welding piece 21 adopts the shape of round hemisphere groove, then becomes better molten bath, and simultaneously, along with the rising of external force and temperature, so, just can form perfect welding seam just, simultaneously, the extension length of inside shape ring 21.1.3 of preapring for an unfavorable turn of events is less than outside point discharge ring 21.1.1, so, make inside shape ring 21.1.3 of preapring for an unfavorable turn of events indeformable, thereby guarantee that the internal diameter of the crater of copper aluminium pipe after the welding can not be outstanding, it is less to avoid influencing the variable of inside passageway.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (6)
1. A high-strength welding device for copper-aluminum pipelines is characterized in that: the device comprises a butt welding machine (48), a thermal relay (45), a welding actuator (49), a transition welding part (21), a welding bracket (43), an argon protection device and a pneumatic propulsion device, wherein the transition welding part (21) is arranged in the welding actuator (49), the welding actuator (49) is fixed on the welding bracket (43), one end of the transition welding part (21) corresponds to a copper pipeline (27), and the other end of the transition welding part corresponds to an aluminum pipeline (29); the outer side of the copper pipeline (27) and the outer side of the aluminum pipeline (29) are respectively connected with a pneumatic propulsion device, the copper pipeline (27) and the aluminum pipeline (29) are pushed by the pneumatic propulsion devices to move to the transition welding part (21), meanwhile, a butt welding machine (48) is used for welding the copper pipeline (27) and one end of the transition welding part (21), and the aluminum pipeline (29) and the other end of the transition welding part (21) are welded; the welding actuator (49) is connected with an argon protection device, argon protection is carried out on the welding process through the argon protection device, the thermal relay (45) is communicated with the welding part through a thermal argon output pipe (44), and the on-off of the thermal relay (45) is controlled through the temperature of argon;
the welding actuator (49) comprises a transition welding part fixing device, a copper pipeline pushing device and an aluminum pipeline pushing device, wherein the copper pipeline pushing device is arranged at one end of the transition welding part fixing device, and the aluminum pipeline pushing device is arranged at the other end of the transition welding part fixing device; transition welding spare fixing device includes tetrafluoro centre gripping lamella (13), transition carrier (14), clamping bolt (15), pressure wire dish (17), clamp bolt (18), ground wire flexible pad (19), and the outside of transition welding spare (21) is equipped with tetrafluoro centre gripping lamella (13), and tetrafluoro centre gripping lamella (13) pass through clamping bolt (15) fixed connection with transition carrier (14), and the both ends of transition carrier (14) are passed through ground wire flexible pad (19), ground wire terminal (16) and are fixed through clamp bolt (18) with welding arc lag (46).
2. The high-strength welding device for the copper-aluminum pipeline as claimed in claim 1, which is characterized in that: the butt welding machine (48) comprises a silicon steel sheet (1), a primary coil (2), a binding post (3), a current regulating armature (4), a silicon steel sheet fixing support (5), a primary coil (6), a secondary coil (7), a connecting block (8), a regulating screw rod (9), a regulating handle (10), a guide rail (11) and a lifting guide rail fixing frame (12), wherein the silicon steel sheet (1) is installed in the middle of the silicon steel sheet fixing support (5), the primary coil (2) is wound on the silicon steel sheet (1), the guide rail (11) and a secondary coil winding rod are respectively installed on two sides of the silicon steel sheet (1), the current regulating armature (4) is respectively installed in the guide rail (11), and the current regulating armature (4) is matched and regulated through the regulating screw rod (9) and the lifting guide rail fixing frame (12) which are connected with the upper portion; and the secondary coil winding rod is respectively wound with a first secondary coil (6) and a second secondary coil (7).
3. The high-strength welding device for the copper-aluminum pipeline as claimed in claim 1, which is characterized in that: the copper pipeline pushing device comprises a feeding cylinder (23), a sealing piston (24), a running track (25), a pneumatic control pipeline (26) and a pneumatic pipeline (28), a second tetrafluoro clamping flap (50), a second transition carrier (51) and a second clamping bolt (52), wherein the second tetrafluoro clamping flap (50) is sleeved on the outer side of the copper pipeline (27), the second tetrafluoro clamping flap (50) is fixedly connected with the second transition carrier (51) sleeved on the outer side through the second clamping bolt (52), and the pneumatic cylinder consisting of the feeding cylinder (23) and the sealing piston (24) is arranged on the outer side of the second transition carrier (51); the second transition carrier (51) is connected with the pneumatic cylinder through the operation track (25), the inner end of the operation track (25) is movably connected with a wire pressing disc (17) of the transition welding part fixing device, and when the compressed gas pushes the sealing piston (24), the second transition carrier (51) fixed on the outer wall of the copper pipeline is pushed to be close to the transition welding part (21) along the operation track (25).
4. The high-strength welding device for the copper-aluminum pipeline as claimed in claim 3, wherein: the lower end of the second transition carrier (51) is connected with the wiring terminal (i) through a polytetrafluoroethylene ring, a fixed lantern ring (47) and an argon outlet pipe (22) are arranged on the lower side of the polytetrafluoroethylene ring, and the outer end of the argon outlet pipe (22) is connected with a hot argon output pipe (44); the argon gas outlet pipe (22) and the hot argon gas outlet pipe (44) lead out the heated argon gas between the copper pipeline and the transition welding part to a thermal relay (45).
5. The high-strength welding device for the copper-aluminum pipeline as claimed in claim 1, which is characterized in that: the inner end of the ground wire binding post (16) is provided with a ground wire contact (20), and one side of the welding arc protective sleeve (46) is provided with a wire pressing disc (17).
6. The high-strength welding device for the copper-aluminum pipeline as claimed in claim 3, wherein: the running track (25) is made of polytetrafluoroethylene, so that current of a copper pipeline or an aluminum pipeline is prevented from being conducted to the transition welding piece (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811357581.9A CN109249110B (en) | 2018-11-15 | 2018-11-15 | High-strength welding device for copper-aluminum pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811357581.9A CN109249110B (en) | 2018-11-15 | 2018-11-15 | High-strength welding device for copper-aluminum pipeline |
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| CN109249110B true CN109249110B (en) | 2020-09-25 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3240377A (en) * | 1961-12-11 | 1966-03-15 | Reynolds Metals Co | Cryogenic tank system |
| EP0126831B1 (en) * | 1983-05-25 | 1987-09-30 | O.L.S. S.r.l. | Copper-aluminium couplings |
| CN101145471B (en) * | 2007-07-27 | 2010-05-26 | 太仓绿翔光电科技有限公司 | Relay for radio circuit and electronic ballast employing the relay |
| CN101274389B (en) * | 2008-05-14 | 2010-06-09 | 佛山市顺德区三胜家电制造有限公司 | Copper-aluminum joint pressure welding technique |
| CN101549434A (en) * | 2009-02-10 | 2009-10-07 | 海信科龙电器股份有限公司 | Welding device and method |
| CN105171216B (en) * | 2015-09-01 | 2018-10-16 | 河北五鑫花园制品有限公司 | Pneumatic butt-weld machine |
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