A gas turbine flame tube assembly welding tool

Abstract

The application relates to the technical field of flame tube processing, and discloses a gas turbine flame tube assembly and welding tool, which comprises a base, a roller support is arranged at the middle of the upper end of the base, upper and lower flame tubes are movably arranged on the left and right sides of the upper end of the roller support, an axle seat one is arranged at the left side of the upper end of the base, a sleeve is slidably inserted into the right end of the axle seat one, and an elastic core pipe is slidably inserted into the left side of the sleeve. The left end of the upper flame tube is clamped and extruded by a positioning disc, the tail part of the lower flame tube is locked by a positioning assembly, so that the axial length of the whole flame tube is limited, the radial position of the two parts of the flame tube when being butted is ensured, the welding seam area of the flame tube is reinforced and limited from the inside by an inner supporting assembly, the assembly precision is improved, and the radial run-out is not over the tolerance when subsequent rotary welding is carried out. In addition, the integrated control facilitates quick assembly and disassembly, and improves the assembly and welding efficiency of the flame tube.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flame tube processing, in particular to a gas turbine flame tube assembly welding tool. BACKGROUND

[0002] As a heat-power conversion power device, the gas turbine has the advantages of large specific power, fast start and load change, and can use various fuels. The combustion chamber is one of the three major components of the gas turbine, known as the "heart" of the engine, located between the compressor and the turbine. It is used to convert the chemical energy in the fuel into heat energy and heat the high-pressure air discharged by the compressor to the allowable temperature before the turbine. The flame tube, as the core component of the combustion chamber, also provides space for fuel combustion. Although the flame tube is a thin-walled part, the assembly requirements are very high, so the assembly of the flame tube needs to be completed with a special tool.

[0003] The utility model discloses a gas turbine combustion chamber flame tube assembly welding tool of CN209954070U discloses a kind of gas turbine combustion chamber flame tube assembly welding tool, center column is vertically arranged on base, center column is equipped with multiple axial through holes, the distance between adjacent axial through holes is single cone height;Lower tray is sleeved on center column, and multiple inner pressure hooks are provided on lower tray;Upper tray is sleeved on center column, and multiple outer pressure hooks are provided on upper tray.The utility model can quickly support and fix the cone, and ensure that the upper cone and the lower cone are coaxially sleeved, which facilitates welding.

[0004] The gas turbine combustion chamber flame tube assembly welding tool in the above patent fixes the cone at the bottom and the top by the multiple pressure hooks arranged in the circumference during use, and the pressure hooks are controlled to press the cone by the multiple fixed bolts arranged in the circumference. Since multiple fixed bolts are needed to control the pressure of the pressure hooks, if one or more fixed bolts are not screwed in place, the pressure hooks are not fixed in place, which can cause misalignment of the cone butt joint and welding position deviation, thereby reducing the assembly accuracy. Since multiple fixed bolts need to be operated, the operation is complicated and the disassembly efficiency is low. SUMMARY

[0005] The present application aims to solve the problems of low assembly accuracy and low disassembly efficiency of general gas turbine flame tube assembly welding tools during use, and provides a gas turbine flame tube assembly welding tool.

[0006] The present application specifically adopts the following technical solutions to achieve the above-mentioned purposes:

[0007] The application discloses a gas turbine flame tube assembly welding tool which comprises a base, a roller support installed at the middle of the upper end of the base, an upper flame tube and a lower flame tube movably arranged at the left and right sides of the upper end of the roller support, an axle seat one installed at the left side of the upper end of the base, a sleeve slidingly and telescopically connected to the right end of the axle seat one, an elastic core pipe slidingly and telescopically connected to the left side of the sleeve, an adjusting screw rod with the left side of the elastic core pipe screw-connected and rotatingly connected to the left wall of the axle seat one, a positioning disc with the right end of the sleeve rotatingly connected and protruding in a conical shape at the middle of the right end, a limiting assembly arranged on the inner wall of the axle seat one and used for locking the sleeve, and an inner supporting assembly arranged at the right side of the positioning disc and used for limiting the welding seam of the flame tube.

[0008] An axle seat two is installed at the right side of the upper end of the base, a rotating handle is rotatingly connected to the right wall of the axle seat two, an eccentric disc is fixedly connected to the left end of the rotating handle, the left wall of the eccentric disc is provided with a positioning groove matched with the tail of the lower flame tube, and a positioning assembly for locking the lower flame tube is arranged in the positioning groove.

[0009] Further, the positioning disc, the upper flame tube, the lower flame tube and the rotating handle are coaxial, and the inner diameters of the upper flame tube and the lower flame tube gradually decrease from left to right after being combined.

[0010] Further, three groups of rollers are rotatingly connected to the upper end of the roller support, each group of the rollers is symmetrically arranged front and back, and the radii of the three groups of rollers gradually increase from left to right.

[0011] Further, the limiting assembly comprises a hydraulic oil cavity formed in the inner wall of the axle seat one around the periphery of the sleeve, a piston is fixedly connected to the outer wall of the sleeve and slidingly connected to the inner wall of the hydraulic oil cavity, a plurality of electromagnetic valves are circumferentially arranged on the piston, and a pressure sensor is electrically connected to the electromagnetic valves and mounted at the edge of the right wall of the positioning disc.

[0012] Further, the inner supporting assembly comprises an adjusting pipe rotatingly connected to the inner wall of the sleeve, arc grooves are circumferentially arranged on the upper and lower walls of the adjusting pipe, a pin column is movably connected to the inner wall of the elastic core pipe and movably connected to the arc grooves, a carrier pipe is slidingly and telescopically connected to the inner wall of the adjusting pipe, an adjusting disc is fixedly connected to the right end of the carrier pipe, a bent groove is circumferentially arranged on the adjusting disc, a rotating shaft is slidingly and telescopically connected to the inner wall of the adjusting pipe and rotatingly connected to the carrier pipe, a plurality of telescopic columns are circumferentially arranged on the outer periphery of the right end of the rotating shaft, a convex column is movably connected to the left wall of the telescopic column and movably connected to the bent groove, the left wall of the fixed section of the telescopic column is provided with a sliding groove corresponding to the convex column, and the radii of the left and right resistance wheels are different.

[0013] The left wall of the axle seat one is rotatingly connected to an electric screw rod screw-connected with the carrier pipe, the electric screw rod is driven by a motor mounted on the left wall of the axle seat one, and the motor is electrically connected to the pressure sensor.

[0014] Further, the rotating shaft upper wall is provided with a key groove, the adjusting pipe right side inner wall is provided with a key convex which is movably connected with the key groove, and the carrier pipe front side is provided with a movable slot corresponding to the key convex.

[0015] Further, the positioning assembly comprises a clamping block which is connected to the positioning slot at the upper and lower sides at right angles, the lower flame tube right end upper and lower walls are both provided with a mounting edge which can be clamped by the clamping block, the clamping block middle part is fixedly connected with a fixed gear, the positioning slot rear wall is slidably inserted with an elastic slide rod, the elastic force of the elastic slide rod is smaller than that of the elastic core pipe, the elastic slide rod left wall is fixedly connected with a tooth frame which is sleeved on the fixed gear, the shaft seat two left side inner walls are slidably connected with an adjusting ring, the adjusting ring right wall inner side edge is provided with an inclined surface which movably abuts against the elastic slide rod, and the adjusting ring and the sleeve are fixedly connected with two L-shaped connecting rods which penetrate through the roller support.

[0016] Further, the tooth frame inner cavity right wall on the upper side is engaged with the fixed gear, the tooth frame inner cavity left wall on the lower side is engaged with the fixed gear, and the clamping block middle part is provided with a through slot which is matched with the tooth frame.

[0017] The beneficial effects of the present application are as follows:

[0018] By using the present application, the upper flame tube is butted with the lower flame tube and placed on the roller support, the lower flame tube tail is inserted into the positioning slot in the eccentric disc, the positioning disc is clamped and extruded on the left end of the upper flame tube, the lower flame tube tail is locked by the positioning assembly, the axial length of the whole flame tube is limited, the radial position of the two parts of the flame tube is ensured, the welding area of the flame tube is reinforced from the inside by the inner support assembly, the assembly precision is improved, and the radial run-out is avoided during subsequent rotary welding.

[0019] By rotating the adjusting screw, the positioning disc can first extrude and fix the upper flame tube, the positioning assembly is automatically driven to lock the lower flame tube at the same time, the positioning assembly is automatically locked to the sleeve when the pressure of the positioning disc is sufficient, the inner support assembly is automatically extended, the adjusting screw is continuously rotated, the inner support assembly is controlled to limit the welding area inside the flame tube, the assembly and disassembly are facilitated, and the assembly and welding efficiency of the flame tube is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a three-dimensional structure diagram of the assembly and welding tool of the present application;

[0021] Figure 2 is a three-dimensional sectional view of the assembly and welding tool base and roller support part of the present application;

[0022] Figure 3This is a three-dimensional sectional view of the assembly and welding tooling bearing seat and the elastic core tube of the present invention;

[0023] Figure 4 This is a three-dimensional sectional view of the assembly and welding tooling bearing seat and the adjusting tube portion of the present invention;

[0024] Figure 5 This is a three-dimensional sectional view of the positioning plate portion of the assembly and welding fixture of the present invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the assembly and welding tooling bearing seat 2 and the eccentric disk of the present invention;

[0026] Figure 7 This is a three-dimensional sectional view of the lower flame tube and eccentric disk portion of the assembly and welding fixture of the present invention;

[0027] Figure 8 This is a three-dimensional sectional view of the eccentric disc and clamping block of the assembly and welding fixture of the present invention.

[0028] Reference numerals: 1. Base; 11. Roller support; 12. Roller; 2. Upper flame tube; 3. Lower flame tube; 4. Shaft seat one; 41. Sleeve; 42. Piston; 43. Solenoid valve; 44. Elastic core tube; 45. Pin; 46. Adjusting screw; 47. Positioning plate; 48. Pressure sensor; 5. Adjusting pipe; 51. Arc groove; 52. Carrier tube; 53. Electric screw; 54. Adjusting plate; 55. Bend groove; 56. Rotating shaft; 57. Telescopic column; 58. Protruding column; 59. Abutment wheel; 6. Shaft seat two; 61. Rotating handle; 62. Eccentric plate; 63. Locking block; 64. Fixed gear; 65. Elastic slide rod; 66. Gear frame; 67. Adjusting ring; 68. L-shaped connecting rod. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example 1, as Figures 1-8 As shown, a welding fixture for assembling a gas turbine flame tube includes a base 1. A roller support 11 is installed at the middle of the upper end of the base 1. An upper flame tube 2 and a lower flame tube 3 are movably arranged on the left and right sides of the upper end of the roller support 11, respectively. A bearing seat 4 is installed on the left side of the upper end of the base 1. A sleeve 41 is slidably inserted into the right end of the bearing seat 4. A spring core tube 44 is slidably inserted into the left side of the sleeve 41. An adjusting screw 46, which is threaded into the left side of the spring core tube 44, is rotatably connected to the left wall of the bearing seat 4 via a thrust bearing. A positioning disc 47, which protrudes in a conical shape at the middle of the right end, is rotatably connected to the right end of the sleeve 41. A limiting component for locking the sleeve 41 is provided on the inner wall of the bearing seat 4. An inner support component for limiting the weld seam of the flame tube is provided on the right side of the positioning disc 47.

[0031] The right side of the upper end of the base 1 is provided with an axle seat two 6, the right wall of the axle seat two 6 is rotatably connected with a handle 61, the left end of the handle 61 is fixedly connected with an eccentric disc 62, the left wall of the eccentric disc 62 is provided with a positioning groove matched with the tail of the lower flame tube 3, and the positioning groove is provided with a positioning assembly for locking the lower flame tube 3.

[0032] The positioning disc 47, the upper flame tube 2, the lower flame tube 3 and the handle 61 are coaxial, and the inner diameter of the upper flame tube 2 gradually decreases from left to right after being combined with the lower flame tube 3.

[0033] In use, the upper flame tube 2 and the lower flame tube 3 are placed on the roller support 11 in abutment, and the tail of the lower flame tube 3 is inserted into the positioning groove in the eccentric disc 62, the adjusting screw 46 is rotated to drive the elastic core tube 44 to move rightwards, the elastic core tube 44 drives the sleeve 41 to move rightwards, and during the movement, the elastic core tube 44 and the sleeve 41 are relatively fixed due to the large elastic force of the elastic core tube 44, when the right end of the positioning disc 47 is inserted into the left end port of the upper flame tube 2 and presses the same, the upper flame tube 2 and the lower flame tube 3 are firmly abutted, and the positioning assembly is simultaneously locked to the tail of the lower flame tube 3, thereby limiting the axial length of the flame tube as a whole, and ensuring the radial position of the abutted two parts of the flame tube, when the pressing force of the positioning disc 47 is sufficient, the limiting assembly is automatically locked to the sleeve 41 to prevent further extension, thereby avoiding damage to the abutted two parts of the flame tube due to excessive pressing, and the inner supporting assembly is automatically extended and the outer end is extended to the gap area between the upper flame tube 2 and the lower flame tube 3 to be welded, the adjusting screw 46 is continuously rotated, the elastic core tube 44 is compressed to move into the sleeve 41, and the inner supporting assembly is automatically opened to strengthen the welding area of the flame tube from the inside, thereby improving the assembly precision and ensuring the assembly safety, and avoiding radial run-out out-of-tolerance during rotary welding, in addition, the integrated control facilitates quick assembly and disassembly, improves the assembly and welding efficiency of the flame tube, and when the flame tube needs to be rotated for subsequent welding, the handle 61 is rotated to drive the eccentric disc 62 to rotate, the positioning disc 47 is rotated to drive the flame tube to deflect, and the flame tube is relatively fixed after being rotated to any angle by the pressing force of the positioning disc 47.

[0034] In example two, on the basis of the above-mentioned example, three groups of rollers 12 are rotatably connected to the upper end of the roller support 11, each group of rollers 12 is symmetrically arranged front and back, and the radii of the three groups of rollers 12 gradually increase from left to right.

[0035] In use, the two groups of rollers 12 on the left side are used to support the upper flame tube 2, and the group of rollers 12 on the right side is used to support the lower flame tube 3 in cooperation with the positioning groove, and the design that the radii of the three groups of rollers 12 gradually increase from left to right can ensure that the upper flame tube 2 and the lower flame tube 3 are coaxial.

[0036] In the above embodiment, the limiting assembly includes a hydraulic oil cavity formed in the inner wall of the shaft seat one 4 around the outer periphery of the sleeve 41, the outer wall of the sleeve 41 is fixedly connected with a piston 42 which is slidingly connected with the inner wall of the hydraulic oil cavity, a plurality of electromagnetic valves 43 are circumferentially arranged on the piston 42, and a pressure sensor 48 is mounted on the right wall edge of the positioning disc 47 and electrically connected with the electromagnetic valves 43.

[0037] When the initial electromagnetic valve 43 is opened, the sleeve 41 can drive the piston 42 to move right along the hydraulic oil cavity, and the hydraulic oil flows through the electromagnetic valve 43 with small resistance to the piston 42, when the positioning disc 47 extrudes the upper flame tube 2 and the pressure sensor 48 detects that the pressure is sufficient, the pressure sensor 48 feeds back to control each electromagnetic valve 43 to be closed, so that the sleeve 41 cannot continue to move and is locked to prevent further extension, thereby avoiding excessive extrusion of the two parts of the flame tube and causing damage, and the axial length size of the flame tube is limited safely and reliably.

[0038] In the above embodiment, the inner support assembly includes an adjusting pipe 5 which is rotationally connected to the inner wall of the sleeve 41, arc grooves 51 are circumferentially arranged on the upper and lower walls of the adjusting pipe 5, a pin column 45 is movably connected with the arc grooves 51 on the inner wall of the elastic core pipe 44, a carrier pipe 52 is slidingly inserted into the inner wall of the adjusting pipe 5, the right end of the carrier pipe 52 is fixedly connected with an adjusting disc 54, a bent groove 55 is circumferentially arranged on the adjusting disc 54, a rotating shaft 56 is slidingly connected with the adjusting pipe 5 in the carrier pipe 52, a plurality of telescopic columns 57 are circumferentially arranged on the right end of the rotating shaft 56, a convex column 58 is movably connected with the bent groove 55 on the left wall of the telescopic column 57, the left wall of the fixed segment of the telescopic column 57 has a sliding groove corresponding to the convex column 58, and the left and right sides of the outer end of the telescopic column 57 are respectively rotationally connected with abutting wheels 59, the radius of the left abutting wheel 59 is greater than that of the right abutting wheel 59.

[0039] The left wall of the shaft seat one 4 is rotationally connected with an electric screw rod 53 which is screwedly inserted into the carrier pipe 52, the electric screw rod 53 is driven by a motor mounted on the left wall of the shaft seat one 4, and the motor is electrically connected with the pressure sensor 48.

[0040] A key groove is formed on the upper wall of the rotating shaft 56, a key convex is movably connected with the key groove on the right inner wall of the adjusting pipe 5, and an active groove corresponding to the key convex is formed on the front side of the carrier pipe 52.

[0041] When the positioning disc 47 extrudes the upper flame tube 2 and the pressure sensor 48 detects that the pressure is sufficient to control the locking of the sleeve 41, the pressure sensor 48 synchronously controls the motor to drive the electric screw rod 53 to rotate, drives the carrier pipe 52 to move the abutting wheels 59 to the gap area between the upper flame tube 2 and the lower flame tube 3 to be welded, and after the movement is completed, the key convex is still connected with the key groove.

[0042] Continue to rotate the adjusting screw rod 46, the elastic core tube 44 is compressed to advance to the inside of the sleeve 41, the elastic core tube 44 drives the pin 45 to extrude the arc groove 51 to drive the adjusting tube 5 to deflect, the adjusting tube 5 drives the key convex to drive the key groove to drive the rotating shaft 56 to deflect, the rotating shaft 56 drives the telescopic column 57 to deflect, the convex column 58 is driven by the bending groove 55 to make the telescopic column 57 elongate, the telescopic column 57 drives the left side abutting wheel 59 to abut the inside port area of the upper flame cylinder 2, and the right side abutting wheel 59 abuts the inside port area of the lower flame cylinder 3, so that the welding area of the flame cylinder is reinforced and limited from the inside, so that the assembly precision is improved, the assembly safety is ensured, and the radial runout is avoided.

[0043] In the above embodiment, the positioning assembly comprises a clamping block 63 which is connected to the positioning groove at the upper and lower sides at right angles, the right end of the lower flame cylinder 3 is provided with a mounting edge which can be clamped by the clamping block 63, the clamping block 63 is fixedly connected with a fixed gear 64 in the middle, the rear wall of the positioning groove is slidably inserted with an elastic sliding rod 65, the elastic force of the elastic sliding rod 65 is smaller than that of the elastic core tube 44, the left wall of the elastic sliding rod 65 is fixedly connected with a tooth frame 66 which is sleeved on the fixed gear 64, the left side inner wall of the shaft seat 2 is slidably clamped with an adjusting ring 67, the right wall inner side edge of the adjusting ring 67 is provided with an inclined surface which is movably abutted by the elastic sliding rod 65, and the adjusting ring 67 is fixedly connected with two L-shaped connecting rods 68 which penetrate through the roller support 11 between the sleeve 41.

[0044] The right wall of the inner cavity of the upper tooth frame 66 is engaged with the fixed gear 64, the left wall of the inner cavity of the lower tooth frame 66 is engaged with the fixed gear 64, and the clamping block 63 is provided with a through groove which is matched with the tooth frame 66 in the middle.

[0045] When the sleeve 41 is driven by the initial rotation of the adjusting screw rod 46 to move the positioning disc 47 to the right to press and fix the flame cylinder, the sleeve 41 synchronously pushes the L-shaped connecting rod 68 to stably move to the right through the roller support 11, so as to drive the inclined surface on the adjusting ring 67 to extrude and contract the elastic sliding rod 65, the elastic sliding rod 65 drives the two tooth frames 66 to deflect, so that the corresponding fixed gear 64 drives the clamping block 63 to deflect, and the upper and lower clamping blocks 63 automatically press the mounting edges of the tail of the lower flame cylinder 3, so as to realize the locking of the lower flame cylinder 3.

[0046] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gas turbine combustor assembly welding fixture comprising a base (1), characterized in that, The upper end of the base (1) is provided with a roller support (11), the upper end of the roller support (11) is movably provided with an upper flame tube (2) and a lower flame tube (3) on the left and right sides, respectively, the left side of the upper end of the base (1) is provided with a shaft seat (4), the right end of the shaft seat (4) is slidably inserted with a sleeve (41), the left side of the sleeve (41) is slidably inserted with a spring core pipe (44), the left wall of the shaft seat (4) is rotatably connected with an adjusting screw (46) which is threadedly connected with the left side of the spring core pipe (44) through a thrust bearing, the right end of the sleeve (41) is rotatably connected with a positioning disc (47) which is protruded in a conical shape in the middle of the right end, the inner wall of the shaft seat (4) is provided with a limiting assembly for locking the sleeve (41), the right side of the positioning disc (47) is provided with an inner support assembly for limiting the weld of the flame tube. The right side of the upper end of the base (1) is provided with a shaft seat (6), the right wall of the shaft seat (6) is rotatably connected with a handle (61), the left end of the handle (61) is fixedly connected with an eccentric disc (62), the left wall of the eccentric disc (62) is provided with a positioning groove which is matched with the tail of the lower flame tube (3), the positioning groove is provided with a positioning assembly for locking the lower flame tube (3).

2. A gas turbine combustor assembly welding fixture as defined in claim 1, wherein, The positioning disc (47), the upper flame tube (2), the lower flame tube (3) and the handle (61) are coaxial, the inner diameter of the upper flame tube (2) and the lower flame tube (3) gradually decreases from left to right after being combined.

3. A gas turbine combustor assembly welding fixture as defined in claim 2 wherein, The upper end of the roller support (11) is rotatably connected with three groups of rollers (12), each group of the rollers (12) is symmetrically arranged front and back, the radii of the three groups of rollers (12) gradually increase from left to right.

4. A gas turbine combustor assembly welding fixture as defined in claim 3 wherein, The limiting assembly comprises a hydraulic oil cavity which is formed in the inner wall of the shaft seat (4) around the outer periphery of the sleeve (41), the outer wall of the sleeve (41) is fixedly connected with a piston (42) which is slidably connected with the inner wall of the hydraulic oil cavity, a plurality of electromagnetic valves (43) are circumferentially arranged on the piston (42), the right wall edge of the positioning disc (47) is provided with a pressure sensor (48) which is electrically connected with the electromagnetic valves (43).

5. A gas turbine combustor assembly welding fixture as defined in claim 4 wherein, The inner support assembly comprises an adjusting pipe (5) rotatably connected to the inner wall of the sleeve (41), the adjusting pipe (5) is provided with circumferentially arranged arc grooves (51) on the upper and lower walls, the elastic core pipe (44) is provided with a pin column (45) movably connected to the arc grooves (51), the adjusting pipe (5) is slidably connected with a carrier pipe (52), the right end of the carrier pipe (52) is fixedly connected with an adjusting disc (54), the adjusting disc (54) is circumferentially provided with a curved groove (55), the carrier pipe (52) is rotatably connected with a rotating shaft (56) slidably connected to the adjusting pipe (5), the right end of the rotating shaft (56) is fixedly connected with circumferentially arranged elastic columns (57), the elastic column (57) is provided with a convex column (58) movably connected to the curved groove (55) on the left wall of the elastic column (57), the left wall of the fixed section of the elastic column (57) is provided with a sliding groove corresponding to the convex column (58), the left and right sides of the elastic column (57) are rotatably connected with abutting wheels (59), the radius of the left abutting wheel (59) is greater than that of the right abutting wheel (59). The left wall of the shaft seat one (4) is rotatably connected with an electric screw rod (53) threadedly connected to the carrier pipe (52), the electric screw rod (53) is driven by a motor mounted on the left wall of the shaft seat one (4), and the motor is electrically connected with the pressure sensor (48).

6. A gas turbine combustor assembly welding fixture as defined in claim 5 wherein, The upper wall of the rotating shaft (56) is provided with a key groove, the right inner wall of the adjusting pipe (5) is provided with a key convex movably connected to the key groove, and the front side of the carrier pipe (52) is provided with a movable groove corresponding to the key convex.

7. A gas turbine combustor assembly welding fixture as defined in claim 6 wherein, The positioning assembly comprises a clamping block (63) rotatably connected to the upper and lower sides of the positioning groove at a right angle, the upper and lower walls of the right end of the lower flame tube (3) are provided with mounting edges capable of being clamped by the clamping block (63), the middle of the clamping block (63) is fixedly connected with a fixed gear (64), the rear wall of the positioning groove is slidably connected with an elastic slide rod (65), the elastic force of the elastic slide rod (65) is smaller than that of the elastic core pipe (44), the left wall of the elastic slide rod (65) is fixedly connected with a tooth frame (66) sleeved on the fixed gear (64), the left inner wall of the shaft seat two (6) is slidably connected with an adjusting ring (67), the right inner wall of the adjusting ring (67) is provided with an inclined surface movably abutting against the elastic slide rod (65), and the adjusting ring (67) and the sleeve (41) are fixedly connected with two L-shaped connecting rods (68) penetrating through the roller support (11).

8. A gas turbine combustor assembly welding fixture as defined in claim 7, wherein, The right wall of the inner cavity of the upper tooth frame (66) is engaged with the fixed gear (64), the left wall of the inner cavity of the lower tooth frame (66) is engaged with the fixed gear (64), and the middle of the clamping block (63) is provided with a through groove matched with the tooth frame (66).

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