A welding device for assembling the exhaust pipe diffuser of a gas turbine

Abstract

The present invention relates to the technical field of gas turbine processing, and specifically to a welding device for the assembly of an exhaust pipe diffuser of a gas turbine, including a diffuser tube assembly arranged on an external turntable and a soldering assisting rotary table mechanism arranged on the diffuser tube assembly. By pre-setting an outer cylinder and an inner cylinder on the external turntable, and using a wing plate stability enhancing mechanism and a weld joint calibration mechanism to precisely clamp and calibrate both sides of the wing plate on the two cylinder walls. After the wing seam flattening assembly adapts to the inner wall of the outer cylinder and the outer wall of the inner cylinder and is pressed tightly, the wing seam flattening assembly descending along the two gaps on the side to be welded of the wing plate can cooperate with two argon arc welding heads after angle adjustment for rapid welding. During the welding process, the wing seam flattening assembly pressing down along the two weld seams can also forcibly flatten the uncooled welding part, thereby avoiding the occurrence of problems such as pores due to interference of multiple factors in the cylinder gap at the weld seam part.

Description

Technical Field

[0001] The present invention relates to the technical field of gas turbine processing, and specifically to a welding device for assembling the exhaust pipe diffuser of a gas turbine. Background Art

[0002] The exhaust pipe diffuser of a gas turbine is a transition structure between the gas turbine and the waste heat boiler. Its main function is to expand and reduce the pressure of the high-temperature and spiral exhaust gas discharged from the gas turbine until it is guided into a regular turbulent gas. After the turbulent gas enters the inlet flue of the waste heat boiler, it can finally enable each heating surface of the waste heat boiler to evenly and effectively absorb the waste heat.

[0003] Since the main body of the exhaust pipe diffuser of the gas turbine is in a frustum shape and the cylinder is horizontally arranged with the central axis as the reference, the outer cylinder, the inner cylinder, and multiple wing plates are welded with the central axis as the center by flanges. However, the diffuser mainly adopts two welding methods: manual welding and argon arc welding. When using argon arc welding to weld the wing plates, when affected by factors such as the humidity, temperature, and air flow in the cylinder gap, the welds between the wing plates and the outer cylinder and the inner cylinder are prone to irregular pores, and in severe cases, larger defects will occur in the wing plate welds.

[0004] In view of this, a welding device for assembling the exhaust pipe diffuser of a gas turbine is designed to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] For this reason, the technical solution adopted by the present invention is as follows:

[0007] A welding device for assembling the exhaust pipe diffuser of a gas turbine, including a diffuser tube assembly arranged on an external frustum, a soldering aid rotating mechanism arranged on the diffuser tube assembly, a propulsion mechanism arranged on the soldering aid rotating mechanism, and a wing plate stabilizing mechanism and a weld calibration mechanism arranged on the propulsion mechanism and located inside the diffuser tube assembly. Two argon arc welding heads and two protective air flow tubes are arranged inside the weld calibration mechanism; the diffuser tube assembly includes an outer tube arranged on the outside of the external frustum, an inner tube arranged on the inside of the external frustum, and multiple wing plates arranged in the gap between the outer tube and the inner tube; the wing plate stabilizing mechanism includes wing root bearing plates and wing side bearing plates symmetrically distributed on one side of the wing plates; the weld calibration mechanism includes a wing seam flattening assembly arranged on the other side of the wing plates, a first arc plate and a second arc plate arranged inside the wing seam flattening assembly, a closing and adjusting assembly arranged inside the wing seam flattening assembly, and two groups of welding head angle adjusting assemblies arranged at the inner ends of the first arc plate and the second arc plate; the two protective air flow tubes are respectively arranged inside the two groups of welding head angle adjusting assemblies, and the welding heads at the bottoms of the two protective air flow tubes are respectively oriented towards the two gaps between the wing plates and the inner wall of the outer tube and the outer wall of the inner tube.

[0008] In a preferred example, the present invention can be further configured as follows: the fluxing and circular rotation mechanism includes two groups of bearing components arranged in the top port of the inner tube;

[0009] The bearing assembly includes a support plate, a clamp installed on the support plate, and a rotation-assisting member movably installed in the support plate;

[0010] The inner wall of the support plate is provided with a limit plate, and the number of the limit plates is two, the two limit plates are stacked along the central axis, a recursive screw is movably installed in the gap between the two limit plates, a push plate is provided on the threaded section of the recursive screw, two oblique arms are movably installed at both ends of the push plate, and the bottoms of the two oblique arms are respectively connected to the two chucks;

[0011] The two support plates are provided with ring rails on the outside, two vertical rods are movably installed in the ring rails, the bottom ends of the vertical rods are provided with ring pads, and the first springs are provided on the outside of the vertical rods;

[0012] The top end and the bottom end of the first spring are respectively pressed between the ring rail and the ring washer.

[0013] In a preferred example, the present invention can be further configured as follows: the propulsion mechanism includes a slide seat arranged on the top threaded section of the ring rail, two propulsion rods arranged in the slide seat, a clamp seat installed on the top rod body of the propulsion rod, and a distance adjustment plate movably installed on the clamp seat;

[0014] The number of the clamping seat and the distance adjusting plates are both two, and combination bolts are arranged in the adjacent ends of the two distance adjusting plates.

[0015] In a preferred example, the present invention can be further configured as follows: the wing plate stabilization mechanism further includes a mother tube installed on the outside of the wing root pressure plate, a sub-rod installed on the inside of the wing side pressure plate, and a second spring arranged on the inside of the mother tube;

[0016] The end cap of the inner end of the sub-rod is adapted to penetrate into the inner cavity of the mother tube.

[0017] In a preferred example, the present invention may be further configured as follows: the wing slot flattening assembly includes an inner tube reinforcement plate and an outer tube reinforcement plate;

[0018] An inner tube smoke cover is installed outside the inner tube reinforcement plate, and an outer tube smoke cover is installed outside the outer tube reinforcement plate;

[0019] The tops of the inner tube smoke cover and the outer tube smoke cover are both provided with screw sleeves, and the first bolts are both provided in the two screw sleeves;

[0020] The top surfaces of the inner tube fume hood and the outer tube fume hood are both equipped with air pipes, and the two air pipes are butted with the two protective air flow pipes;

[0021] In the middle of the top surface of the inner pipe smoke hood, a first arc channel adapted to the first arc plate is provided;

[0022] In the middle of the top surface of the outer pipe smoke hood, a second arc channel adapted to the second arc plate is provided.

[0023] In a preferred example of the present invention, it can be further configured that: the welding head angle adjustment assembly includes a protractor base, a welding head protection tube movably installed inside the protractor base, a triangular plate fixedly installed outside the welding head protection tube, and a second bolt provided inside the welding head protection tube;

[0024] The argon arc welding head is adapted to penetrate into the inside of the welding head protection tube, and the second bolt is used to control the argon arc welding head after height adjustment.

[0025] In a preferred example of the present invention, it can be further configured that: the opening and closing adjustment assembly includes a telescopic sleeve installed on the outer wall of the inner pipe smoke hood, a telescopic sub-rod installed on the inner wall of the outer pipe smoke hood, and the other end of the telescopic sub-rod is movably installed inside the telescopic sleeve;

[0026] A third spring is arranged in the inner cavity of the telescopic sleeve;

[0027] A third bolt is arranged inside the telescopic sleeve.

[0028] In a preferred example of the present invention, it can be further configured that: the support plate is composed of an elongated elastic arc plate, a sector-shaped cushion block, and an arc-shaped end plate, and the elongated elastic arc plate, the sector-shaped cushion block, and the arc-shaped end plate are all made of stainless steel materials;

[0029] The bottom of the ring gasket is adapted to fit against the top of the arc-shaped end plate.

[0030] In a preferred example of the present invention, it can be further configured that: two insertion rods are symmetrically distributed at the bottom of the push rod, and the two insertion rods at the bottom of one push rod are inserted into two holes of the wing root bearing plate, and the two insertion rods at the bottom of the other push rod are inserted into two holes of the inner pipe reinforcement plate.

[0031] In a preferred example of the present invention, it can be further configured that: grooves are provided on the end faces of the wing root bearing plate and the wing side bearing plate facing the wing plate, and the grooves are used to provide heat dissipation windows for the two welds of the wing plate.

[0032] By adopting the above technical solutions, the beneficial effects obtained by the present invention are:

[0033] 1. In the present invention, the outer cylinder and the inner cylinder are pre - arranged on an external round table, and the two sides of the wing plate are precisely clamped and calibrated on the two cylinder walls by means of a wing - plate stability - enhancing mechanism and a weld - joint calibration mechanism. After the wing - seam flattening assembly adapts to the inner wall of the outer cylinder and the outer wall of the inner cylinder is adapted and pressed, the wing - seam flattening assembly descending along the two gaps on the side of the wing plate to be welded can cooperate with two argon - arc welding heads after angle adjustment for rapid welding. During the welding process, the wing - seam flattening assembly pressing down along the two weld seams can also forcibly flatten the un - cooled welding part, thus avoiding problems such as porosity and other defects in the weld seam part due to interference by various factors within the cylinder gap.

[0034] 2. In the present invention, protective air - flow tubes are arranged at the tops of both the inner - pipe smoke hood and the outer - pipe smoke hood. After the wing - seam flattening assembly cooperates with the wing plate to provide a sealed space for the solder - assisting part, the protective gas is injected into the two sealed spaces by means of the protective air - flow tubes. Along with the uniform descent of the wing - seam flattening assembly along the two gaps of the wing plate, finally, the protective gas can effectively protect the welding parts between the wing plate and the two cylinder walls, avoiding arc - pit porosity in the welding parts and also avoiding interference from the air flow within the cylinder gap.

[0035] 3. In the present invention, a solder - assisting rotating round mechanism is arranged at the top of the inner pipe to provide a rotating platform for the propulsion mechanism. After the wing - plate stability - enhancing mechanism and the weld - joint calibration mechanism are suspended by the propulsion mechanism, the wing plate relatively clamped by the wing - plate stability - enhancing mechanism and the weld - joint calibration mechanism can quickly adjust the welding position along the cylinder gap, and at the same time, the vertical accuracy of the wing - plate clamping within the cylinder gap can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic diagram when the present invention is in use;

[0037] Figure 2 is a sectional view of the outer pipe of the present invention;

[0038] Figure 3 is a partial schematic diagram of the present invention;

[0039] Figure 4 is an exploded schematic diagram of the solder - assisting rotating round mechanism of the present invention;

[0040] Figure 5 is a schematic diagram of the bearing assembly of the present invention;

[0041] Figure 6 is a schematic diagram of the propulsion mechanism of the present invention;

[0042] Figure 7 is a schematic diagram of the wing - plate stability - enhancing mechanism of the present invention;

[0043] Figure 8 is a schematic diagram of the weld - joint calibration mechanism of the present invention;

[0044] Figure 9 For the present invention Figure 8 explosion schematic diagram;

[0045] Figure 10 is the explosion schematic diagram of the wing slot leveling assembly of the present invention;

[0046] Figure 11 is the explosion schematic diagram of the welding head angle adjustment assembly of the present invention.

[0047] Reference numerals:

[0048] 100, diffusion tube assembly; 110, outer tube; 120, inner tube; 130, wing plate;

[0049] 200, soldering aid rotation mechanism; 210, bearing assembly; 211, support plate; 212, chuck; 213, auxiliary rotating part; 220, limiting plate; 230, inclined arm; 240, push plate; 250, push rod; 260, ring gasket; 270, vertical rod; 280, first spring; 290, ring track;

[0050] 300, propulsion mechanism; 310, sliding seat; 320, propulsion rod; 330, clamping seat; 340, distance adjusting plate; 350, combination bolt;

[0051] 400, wing plate stability enhancing mechanism; 410, wing root bearing plate; 420, wing side bearing plate; 430, mother tube; 440, sub-rod; 450, second spring;

[0052] 500, weld calibration mechanism; 510, wing slot leveling assembly; 511, inner tube reinforcement plate; 512, inner tube smoke hood; 513, outer tube reinforcement plate; 514, outer tube smoke hood; 515, air pipe; 516, first bolt; 520, first arc plate; 530, second arc plate; 540, welding head angle adjustment assembly; 541, protractor base; 542, welding head protection tube; 543, second bolt; 544, triangular plate; 550, opening and closing adjustment assembly; 551, telescopic sleeve; 552, third bolt; 553, telescopic sub-rod; 554, third spring;

[0053] 600, argon arc welding head;

[0054] 700, protective gas flow tube. Detailed implementation manners

[0055] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in combination with specific implementation manners and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0056] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0057] A welding device for assembling a gas turbine exhaust pipe diffuser provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0058] Embodiment 1:

[0059] Combination Figures 1 to 11 As shown, a welding device for assembling a gas turbine exhaust pipe diffuser provided by the present invention comprises a diffuser assembly 100 arranged on an external truncated table, a welding and circular rotating mechanism 200 arranged on the diffuser assembly 100, a propulsion mechanism 300 arranged on the welding and circular rotating mechanism 200, and a wing plate stabilization mechanism 400 and a weld joint calibration mechanism 500 arranged on the propulsion mechanism 300 and located in the diffuser assembly 100, wherein two argon arc welding heads 600 and two shielding gas flow pipes 700 are arranged in the weld joint calibration mechanism 500, and the welding and circular rotating mechanism 200 is provided with a plurality of argon arc welding heads 600 and two shielding gas flow pipes 700. 00 is used to provide a suspended and rotating support platform for the propulsion mechanism 300, the propulsion mechanism 300 is used to provide a boosting platform for the wing plate stabilization mechanism 400 and the weld calibration mechanism 500, the wing plate stabilization mechanism 400 is used to provide anti-slip and calibration support for welding, the weld calibration mechanism 500 is used to provide a convenient and fast welding platform for the diffuser assembly 100, the argon arc welding head 600 is used to actively weld the selected gap of the diffuser assembly 100, and the shielding gas flow tube 700 is used to input shielding gas into the closed cavity of the selected gap of the diffuser assembly 100.

[0060] The diffuser assembly 100 includes an outer tube 110 disposed outside the outer truncated cone, an inner tube 120 disposed inside the outer truncated cone, and a plurality of wing plates 130 disposed in the gap between the outer tube 110 and the inner tube 120;

[0061] The wing panel stabilizing mechanism 400 includes a wing root pressure plate 410 and a wing side pressure plate 420 which are symmetrically arranged on one side of the wing panel 130;

[0062] The weld calibration mechanism 500 includes a wing gap flattening assembly 510 disposed on the other side of the wing plate 130, a first arc plate 520 and a second arc plate 530 disposed in the wing gap flattening assembly 510, an opening and closing adjustment assembly 550 disposed in the wing gap flattening assembly 510, and two sets of welding head angle adjustment assemblies 540 disposed at the inner ends of the first arc plate 520 and the second arc plate 530;

[0063] The two protective air flow tubes 700 are respectively disposed in the two sets of welding head angle adjustment components 540, and the welding heads at the bottom of the two protective air flow tubes 700 are respectively facing the two gaps between the wing plate 130 and the inner wall of the outer tube 110 and the outer wall of the inner tube 120;

[0064] The wing slot flattening assembly 510 includes an inner tube reinforcement plate 511 and an outer tube reinforcement plate 513;

[0065] An inner tube smoke cover 512 is installed outside the inner tube reinforcement plate 511, and an outer tube smoke cover 514 is installed outside the outer tube reinforcement plate 513;

[0066] The tops of the inner tube smoke cover 512 and the outer tube smoke cover 514 are both provided with screw sleeves, and the first bolts 516 are both provided in the two screw sleeves;

[0067] The top surfaces of the inner tube smoke cover 512 and the outer tube smoke cover 514 are both installed with air pipes 515, and the two air pipes 515 are connected to the two protective air flow pipes 700;

[0068] A first arc track adapted to the first arc plate 520 is opened in the middle of the top surface of the inner tube smoke cover 512;

[0069] A second arc track adapted to the second arc plate 530 is opened in the middle of the top surface of the outer tube smoke cover 514;

[0070] The welding head angle adjustment assembly 540 includes an angle measuring base 541, a welding head protective tube 542 movably mounted inside the angle measuring base 541, a triangular plate 544 fixedly mounted outside the welding head protective tube 542, and a second bolt 543 disposed inside the welding head protective tube 542;

[0071] The argon arc welding head 600 is adapted to penetrate the interior of the welding head protection tube 542, and the second bolt 543 is used to control the height of the argon arc welding head 600;

[0072] The opening and closing adjustment assembly 550 includes a telescopic sleeve 551 installed on the outer wall of the inner tube smoke cover 512, a telescopic sub-rod 553 installed on the inner wall of the outer tube smoke cover 514, and the other end of the telescopic sub-rod 553 is movably installed in the telescopic sleeve 551;

[0073] The inner cavity of the telescopic sleeve 551 is provided with a third spring 554;

[0074] A third bolt 552 is disposed inside the telescopic sleeve 551 .

[0075] By using the external truncated cone as a supporting die base for welding, when the outer tube 110 and the inner tube 120 are effectively supported by the external truncated cone, the symmetrically distributed wing plate stabilization mechanism 400 and the weld joint calibration mechanism 500 can be used to deliver a selected wing plate 130 into the gap between the outer tube 110 and the inner tube 120 until the bottom of the wing plate 130 is supported by the external truncated cone;

[0076] Next, loosen the third bolt 552. At this time, after the telescopic sub-bar 553 loses the restraint of the third bolt 552, the third spring 554 can actively push the telescopic sub-bar 553 outwards. Then, the telescopic sleeve 551 and the telescopic sub-bar 553 can relatively expand the inner pipe smoke hood 512 and the outer pipe smoke hood 514 along the gaps between the outer pipe 110 and the inner pipe 120 until the inner pipe reinforcement plate 511 and the outer pipe reinforcement plate 513 are respectively attached to the outer wall of the inner pipe 120 and the inner wall of the outer pipe 110. After combination, the ports of the inner pipe reinforcement plate 511 and the inner pipe smoke hood 512 face the gap at the root of the wing plate 130, and the ports of the combined outer pipe reinforcement plate 513 and the outer pipe smoke hood 514 face the gap on the side of the wing plate 130.

[0077] Adjust the two second bolts 543 and the two first bolts 516 to control the lifting height and spacing of the two argon arc welding heads 600 in the two sealed cavities. Until the downward ends of the two argon arc welding heads 600 are aligned with the two gaps of the wing plate 130, along with the overall uniform descent of the wing seam flattening assembly 510 along the side of the wing plate 130, finally, the two argon arc welding heads 600 can uniformly weld the two side gaps of the wing plate 130. After inputting protective gas into the two cavities through the two protective gas flow pipes 700, the welded parts on both sides of the wing plate 130 can be avoided from being interfered by various factors in the gaps between the outer pipe 110 and the inner pipe 120.

[0078] Embodiment 2:

[0079] Combined with Figures 2 to 5 As shown in the figure, on the basis of Embodiment 1, the soldering assistant rotary circular mechanism 200 includes two groups of bearing assemblies 210 arranged in the top port of the inner pipe 120;

[0080] The bearing assembly 210 includes a support plate 211, a chuck 212 installed on the support plate 211, and a rotation assisting member 213 movably installed in the support plate 211;

[0081] The support plate 211 is composed of an elongated elastic arc plate, a sector-shaped cushion block, and an arc-shaped end plate, and the elongated elastic arc plate, the sector-shaped cushion block, and the arc-shaped end plate are all made of stainless steel material.

[0082] Preferably, the rotation assisting member 213 is composed of a vertical shaft and a sliding wheel. The outer wall of the sliding wheel is provided with a non-slip rough surface. The vertical shaft is installed inside the sector-shaped cushion block, and an arc-shaped groove is provided on the outside of the sector-shaped cushion block, and the sliding wheel is located in the arc-shaped groove.

[0083] The inner wall of the support plate 211 is provided with a limiting plate 220, and the number of the limiting plates 220 is two. The two limiting plates 220 are stacked along the central axis. A push rod 250 is movably installed in the gap between the two limiting plates 220. A push plate 240 is arranged on the threaded section of the push rod 250. Two inclined arms 230 are movably installed at both ends of the push plate 240, and the bottoms of the two inclined arms 230 are respectively connected to the two chucks 212.

[0084] An annular track 290 is arranged outside the two support plates 211.

[0085] Preferably, an arc-shaped sliding groove is formed inside the annular track 290, and the arc-shaped sliding groove is adapted to two lengthened elastic arc plates. Two symmetrically distributed I-shaped sleeves are installed inside the annular track 290, and the two I-shaped sleeves are respectively movably installed outside the two vertical rods 270.

[0086] Two vertical rods 270 are movably installed inside the annular track 290. A ring gasket 260 is installed at the bottom end of the vertical rod 270. A first spring 280 is arranged outside the vertical rod 270.

[0087] The top end and the bottom end of the first spring 280 are respectively pressed between the annular track 290 and the ring gasket 260.

[0088] The bottom of the ring gasket 260 is adapted to fit against the top of the arc-shaped end plate.

[0089] Preferably, the vertical rod 270 is made of a ductile material. When the push rod 250 rotates counterclockwise, the push plate 240 will descend along the threaded section of the push rod 250. The two outwardly expanding inclined arms 230 can push the two sector-shaped pads. At this time, the two sector-shaped pads will relatively press the inner wall of the port of the inner tube 120. Finally, the two sliding wheels will press against the inner wall of the inner tube 120. At this time, the lengthened elastic arc plates and the vertical rod 270 can form a certain inclination of side bending without interfering with the free rotation of the annular track 290. Finally, the propulsion mechanism 300 arranged on the threaded section of the annular track 290 can accurately pre-install the suspended wing plate stabilizing mechanism 400 and the weld calibration mechanism 500 in the gap between the outer tube 110 and the inner tube 120.

[0090] Embodiment 3:

[0091] Combined with Figures 2 to 11 As shown in the figure, on the basis of the above embodiment, the propulsion mechanism 300 includes a sliding seat 310 arranged on the top threaded section of the annular track 290, two propulsion rods 320 arranged inside the sliding seat 310, a clamping seat 330 installed on the top rod body of the propulsion rod 320, and an adjustable distance plate 340 movably installed on the clamping seat 330.

[0092] The number of the clamping seats 330 and the distance adjusting plates 340 is two, and a combined bolt 350 is arranged in the adjacent ends of the two distance adjusting plates 340.

[0093] Preferably, according to the different wall thicknesses of the inner pipe 120 to be processed, the sliding seat 310 can be adjusted accordingly along the threaded section at the top of the ring rail 290. Loosen the nut on the threaded section at the top of the ring rail 290, and extend the sliding seat 310 along the threaded section at the top of the ring rail 290 until the wing plate stability enhancing mechanism 400 and the weld calibration mechanism 500 assembled on the two push rods 320 are adapted to and fit the outer wall of the inner pipe 120. At this time, the nut on this threaded section can be locked. At this time, the symmetrically distributed wing plate stability enhancing mechanism 400 and the weld calibration mechanism 500 can accurately clamp and pre-assemble a selected wing plate 130 in the gap between the outer pipe 110 and the inner pipe 120.

[0094] The wing plate stability enhancing mechanism 400 further includes a mother pipe 430 installed on the outside of the wing root bearing plate 410, a sub-rod 440 installed on the inside of the wing side bearing plate 420, and a second spring 450 arranged inside the mother pipe 430;

[0095] The end of the inner end of the sub-rod 440 is adapted to penetrate into the inner cavity of the mother pipe 430;

[0096] Two symmetrically distributed insertion rods are arranged at the bottom of the push rod 320. The two insertion rods at the bottom of one push rod 320 are inserted into two holes of the wing root bearing plate 410, and the two insertion rods at the bottom of the other push rod 320 are inserted into two holes of the inner pipe reinforcement plate 511;

[0097] The end faces of the wing root bearing plate 410 and the wing side bearing plate 420 facing the wing plate 130 are both provided with grooves, and the grooves are used to provide heat dissipation windows for the two welds of the wing plate 130.

[0098] Preferably, heat insulation coatings are provided on the outsides of the wing root bearing plate 410 and the wing side bearing plate 420. After the groove at the inner end of the wing root bearing plate 410 fits the gap at the root of the wing plate 130, a spacious heat dissipation window is formed, and after the groove at the inner end of the wing side bearing plate 420 fits the gap outside the inner pipe 120, another spacious heat dissipation window is formed;

[0099] After adjusting the extension and contraction of the two distance-adjusting plates 340 through the combined bolt 350, the two clamping seats 330 will traction the two push rods 320 to make a fine adjustment of the corresponding angle. The symmetrically distributed wing root bearing plates 410, inner tube reinforcement plates 511, outer tube reinforcement plates 513, and wing side bearing plates 420 can clamp the selected wing plate 130. After being clamped, the wing plate 130 is pressed into the gap between the outer tube 110 and the inner tube 120 and can always be perpendicular to the cylinder wall. Finally, under the pushing action of the passive downward pressure of the propulsion mechanism 300, the wing plate stability enhancement mechanism 400 and the weld calibration mechanism 500 can safely and efficiently weld the two gaps of the wing plate 130.

[0100] The working principle and usage process of the present invention: First, invert the outer tube 110 and the inner tube 120 to be welded, then clamp the wing plate 130 to be welded towards the inner sides of the outer tube 110 and the inner tube 120, and assemble the soldering auxiliary rotary mechanism 200 into the port at the top of the inner tube 120. The wing plate stability enhancement mechanism 400 and the weld calibration mechanism 500 suspended by the propulsion mechanism 300 can adaptively clamp both sides of the wing plate 130 in the clamped state;

[0101] By rotating the top runner of the push rod screw 250 counterclockwise, at this time, the push plate 240 will descend along the threaded section of the push rod screw 250. At this time, the push plate 240 will push the two inclined arms 230 to expand outwards. The two inclined arms 230 will expand the bottoms of the two support plates 211 towards the inner wall of the inner tube 120 until they are in a fitting state. At this time, the two symmetrically distributed sets of bearing components 210 can adaptively clamp the top of the inner tube 120, and after the two support plates 211 generate a certain deformation, they will also provide a stable rotating platform for the ring rail 290.

[0102] Then loosen the third bolt 552 counterclockwise. At this time, the telescopic sub-rod 553 is extruded outwards by the third spring 554. At this time, the symmetrically distributed inner tube reinforcement plates 511 and outer tube reinforcement plates 513 can respectively adaptively press the outer wall of the inner tube 120 and the inner wall of the outer tube 110. With the elastic boost of the second spring 450 on the sub-rod 440 outwards, finally, the evenly distributed wing root bearing plates 410, inner tube reinforcement plates 511, wing side bearing plates 420, and outer tube reinforcement plates 513 can calibrate the root and side edges of the wing plate 130. At this time, the root of the wing plate 130 and the outer wall of the inner tube 120 will be vertically constrained, and at the same time, the side edge of the wing plate 130 and the inner wall of the outer tube 110 will also be vertically constrained.

[0103] According to the orientation and spacing between the welding heads at the bottom of the two argon arc welding heads 600 and the root and side of the wing plate 130, by adjusting the first bolt 516, the extension spacing of the first arc plate 520 and the second arc plate 530 in the inner pipe smoke hood 512 and the outer pipe smoke hood 514 is controlled until the welding heads at the bottom of the two argon arc welding heads 600 and the root and side of the wing plate 130 maintain a constant distance. Then, the second bolt 543 is adjusted to control the lifting height of the argon arc welding head 600, and through the fine adjustment of the comparison triangular plate 544 along the scale of the angle measuring base 541, finally, the bottom end of the argon arc welding head 600 can be selectively and precisely calibrated with the two gaps of the wing plate 130.

[0104] As the ring rail 290 presses down along the outside of the two support plates 211 until the entire propulsion mechanism 300 descends at a constant speed, the wing plate stability enhancement mechanism 400 and the weld calibration mechanism 500 suspended by the two propulsion rods 320 can perform precise welding on both sides of the wing plate 130 in the clamped state. When the two gaps of the wing plate 130 are effectively welded, the instantaneous downward pressure of the wing root bearing plate 410 and the inner pipe reinforcement plate 511 in cooperation with the wing side bearing plate 420 and the outer pipe reinforcement plate 513 will forcibly flatten the two welding heads of the wing plate 130. At the same time, the welding assistant cavities formed by the combined inner pipe reinforcement plate 511 and the inner pipe smoke hood 512 and the combined outer pipe reinforcement plate 513 and the outer pipe smoke hood 514 can input protective gas through the protective gas pipe 700. By setting an external round table at the bottom of the gap between the outer pipe 110 and the inner pipe 120 and using the external round table as the support carrier for multiple wing plates 130, finally, the protective gas will enter the cavities of the inner pipe reinforcement plate 511, the inner pipe smoke hood 512, the outer pipe reinforcement plate 513, and the outer pipe smoke hood 514. The protective gas can provide welding assistance protection for the two gaps of the wing plate 130, and at the same time, the waste slag will quickly sink to the two cavities of the inner pipe reinforcement plate 511, the inner pipe smoke hood 512, the outer pipe reinforcement plate 513, and the outer pipe smoke hood 514 under the cooling effect of the protective gas, thereby avoiding interference with the two welds of the wing plate 130 caused by the falling or splashing of the waste slag.

[0105] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A welding device for assembling a diffuser of a gas turbine exhaust connection pipe, comprising a diffuser pipe assembly (100) arranged on an external round table, characterized in that, It further includes a soldering flux turning and rounding mechanism (200) arranged on the diffusion tube assembly (100), a propulsion mechanism (300) arranged on the soldering flux turning and rounding mechanism (200), and a wing plate stability enhancing mechanism (400) and a weld calibration mechanism (500) which are arranged on the propulsion mechanism (300) and located inside the diffusion tube assembly (100). There are two argon arc welding heads (600) and two protective air flow tubes (700) arranged inside the weld calibration mechanism (500). The soldering flux turning and rounding mechanism (200) is used to provide a suspended and rotating support platform for the propulsion mechanism (300). The propulsion mechanism (300) is used to provide a boosting platform for the wing plate stability enhancing mechanism (400) and the weld calibration mechanism (500). The wing plate stability enhancing mechanism (400) is used to provide anti-slip and calibration support for welding. The weld calibration mechanism (500) is used to provide a convenient and fast welding platform for the diffusion tube assembly (100). The argon arc welding head (600) is used to actively weld the selected gap of the diffusion tube assembly (100). The protective air flow tube (700) is used to input protective gas into the sealed cavity of the selected gap of the diffusion tube assembly (100). The diffusion tube assembly (100) includes an outer tube (110) arranged on the outside of the external frustum, an inner tube (120) arranged on the inside of the external frustum, and a plurality of wing plates (130) arranged in the gap between the outer tube (110) and the inner tube (120). The weld calibration mechanism (500) includes a wing gap flattening assembly (510) arranged on the other side of the wing plate (130), a first arc plate (520) and a second arc plate (530) arranged inside the wing gap flattening assembly (510), a closing and adjusting assembly (550) arranged inside the wing gap flattening assembly (510), and two sets of welding head angle adjusting assemblies (540) arranged at the inner ends of the first arc plate (520) and the second arc plate (530). The wing plate stability enhancing mechanism (400) includes a wing root bearing plate (410) and a wing side bearing plate (420) which are arranged on one side of the wing plate (130) and symmetrically distributed, a mother tube (430) installed on the outside of the wing root bearing plate (410), a sub-rod (440) installed on the inside of the wing side bearing plate (420), and a second spring (450) arranged inside the mother tube (430). The end of the inner end of the sub-rod (440) is adaptively penetrated into the inner cavity of the mother tube (430). The wing gap flattening assembly (510) includes an inner tube reinforcing plate (511) and an outer tube reinforcing plate (513). An inner tube smoke hood (512) is installed outside the inner tube reinforcing plate (511), and an outer tube smoke hood (514) is installed outside the outer tube reinforcing plate (513). Screw sleeves are arranged at the tops of the inner tube smoke hood (512) and the outer tube smoke hood (514), and a first bolt (516) is arranged inside each of the two screw sleeves. Air pipes (515) are installed on the top surfaces of the inner tube smoke hood (512) and the outer tube smoke hood (514), and the two air pipes (515) are docked with the two protective air flow tubes (700). A first arc channel adapted to the first arc plate (520) is opened in the middle of the top surface of the inner tube smoke hood (512). The middle part of the top surface of the outer pipe smoke hood (514) is provided with a second arc channel adapted to the second arc plate (530); The welding head angle adjustment assembly (540) includes a protractor base (541), a welding head protection tube (542) movably installed inside the protractor base (541), a triangular plate (544) fixedly installed outside the welding head protection tube (542), and a second bolt (543) arranged inside the welding head protection tube (542); The argon arc welding head (600) is adapted to penetrate into the inside of the welding head protection tube (542), and the second bolt (543) is used to control the argon arc welding head (600) after height adjustment; The opening and closing adjustment assembly (550) includes a telescopic sleeve (551) installed on the outer wall of the inner pipe smoke hood (512), a telescopic sub-bar (553) installed on the inner wall of the outer pipe smoke hood (514), and the other end of the telescopic sub-bar (553) is movably installed inside the telescopic sleeve (551); A third spring (554) is arranged in the inner cavity of the telescopic sleeve (551); A third bolt (552) is arranged inside the telescopic sleeve (551).

2. The welding device for assembling the diffuser of the gas turbine exhaust pipe joint according to claim 1, characterized in that, The soldering aid rotation mechanism (200) includes two sets of bearing assemblies (210) arranged at the top port of the inner pipe (120); The bearing assembly (210) includes a support plate (211), a chuck (212) installed on the support plate (211), and an auxiliary rotating part (213) movably installed inside the support plate (211); A limiting plate (220) is arranged on the inner wall of the support plate (211), and the number of the limiting plates (220) is two. The two limiting plates (220) are stacked along the central axis. A push rod (250) is movably installed in the gap between the two limiting plates (220). A push plate (240) is arranged on the threaded section of the push rod (250). Two inclined arms (230) are movably installed at both ends of the push plate (240), and the bottoms of the two inclined arms (230) are respectively connected to the two chucks (212); Two ring rails (290) are arranged outside the two support plates (211). Two vertical rods (270) are movably installed inside the ring rails (290). A ring gasket (260) is installed at the bottom end of the vertical rod (270). A first spring (280) is arranged outside the vertical rod (270); The top end and the bottom end of the first spring (280) are respectively pressed between the ring rail (290) and the ring gasket (260).

3. A welding device for assembling a diffuser of a gas turbine exhaust pipe connection, according to claim 1, characterized in that, The propulsion mechanism (300) includes a sliding seat (310) arranged on the threaded section at the top of the ring rail (290), two propulsion rods (320) arranged inside the sliding seat (310), a clamping seat (330) installed on the top rod body of the propulsion rod (320), and a distance adjustment plate (340) movably installed on the clamping seat (330); The number of the clamping seats (330) and the distance adjustment plates (340) is two, and a combined bolt (350) is arranged in the adjacent ends of the two distance adjustment plates (340).

4. A welding device for assembling a diffuser of a gas turbine exhaust pipe joint, according to claim 2, characterized in that The support plate (211) is composed of an elongated elastic arc plate, a sector-shaped cushion block, and an arc-shaped end plate, and the elongated elastic arc plate, the sector-shaped cushion block, and the arc-shaped end plate are all made of stainless steel materials; The bottom of the ring gasket (260) is adapted to fit against the top of the arc-shaped end plate.

5. A welding device for assembling a diffuser of a gas turbine exhaust pipe joint, characterized in that, Two symmetrically distributed insertion rods are provided at the bottom of the push rod (320). The two insertion rods at the bottom of one push rod (320) are inserted into two holes of the wing root bearing plate (410), and the two insertion rods at the bottom of the other push rod (320) are inserted into two holes of the inner tube reinforcement plate (511); grooves are formed on the end faces of the wing root bearing plate (410) and the wing side bearing plate (420) facing the wing plate (130), and the grooves are used to provide heat dissipation windows for the welds at two places of the wing plate (130).

6. A welding device for assembling a diffuser of a gas turbine exhaust pipe connection, characterized in that, The two protective air flow tubes (700) are respectively arranged in two groups of welding head angle adjustment assemblies (540), and the welding heads at the bottoms of the two protective air flow tubes (700) are respectively oriented towards two gaps between the wing plate (130) and the inner wall of the outer tube (110) and the outer wall of the inner tube (120).

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