Assembly tool for preventing deformation during welding of gas turbine flame tube and using method

Abstract

The invention relates to an assembly tool for preventing deformation during welding of a flame tube of a gas turbine and a use method, and aims to solve the problems that the concentricity and other position requirements of three sections of thin-wall parts are difficult to effectively control during assembly of the flame tube, and the product deformation is serious in the welding process, the assembly requirement cannot be met, and the rejection rate of the product is extremely easy to increase. The lower end of the supporting mandrel is fixed to the middle of the supporting bottom plate, the lower outer supporting assembly and the upper outer supporting assembly are installed on the supporting mandrel, the upper portion of the upper outer supporting assembly is sleeved with the upper pressing plate, and the large nut is located above the upper pressing plate. According to the scheme, in the welding process, the shape and the position of the flame tube can be strictly controlled when the flame tube is assembled, the flame tube is prevented from deforming in the welding process, and the tool is convenient to disassemble when used.

Description

Technical Field

[0001] The invention relates to the technical field of combustion engine flame tube welding, and in particular to an assembly tool for preventing deformation during combustion engine flame tube welding and a use method thereof. Background Art

[0002] The combustion chamber of an internal combustion engine is the core component of a combustion engine unit. It mixes natural gas with air and then burns it. The generated combustion products are sent to the compressor to do work. The flame tube is the core component of the combustion chamber. The flame tube of a certain gas turbine combustion chamber consists of three sections: the front ring section, the spoiler section, and the cooling section. The front ring section and the cooling section are rolled into a cylindrical shape by a thin plate and then welded into a cylindrical shape; the spoiler section is rolled into a cone shape by a thin plate and then welded into a cone shape, and then welded together by argon arc welding to form a flame tube. The flame tube is welded together by large-sized thin-walled parts. Its diameter is greater than 500mm, the thickness does not exceed 3.5mm, and it is made of high-temperature alloy material. When assembling the flame tube, it is difficult to effectively control the concentricity and other position requirements of the three sections of thin-walled parts. In addition, the product is severely deformed during the welding process and cannot meet the assembly requirements, which easily increases the scrap rate of the product. Summary of the invention

[0003] The purpose of the patent of this invention: The invention is to solve the problem that it is difficult to effectively control the concentricity and other position requirements of the three-section thin-walled parts when assembling the flame tube, and the product is severely deformed during the welding process, and cannot meet the assembly requirements, which easily increases the product scrap rate. The present invention provides an assembly tool and a method of use for preventing deformation during welding of the flame tube of a gas turbine.

[0004] The object of the present invention is achieved as follows: an assembly tool for preventing deformation during welding of a combustion engine flame tube, characterized in that it comprises an upper pressure plate, a large nut, a support mandrel, a support bottom plate, a lower outer support assembly and an upper outer support assembly;

[0005] The lower end of the support core shaft is fixed to the middle part of the support base plate, the lower external support assembly and the upper external support assembly are installed on the support core shaft in sequence from bottom to top and are coaxially arranged with the support core shaft, the upper pressure plate is sleeved on the upper part of the upper external support assembly, the large nut is located above the upper pressure plate and is threadedly connected to the support core shaft, when the engine flame tube is installed, the lower part of the front ring section of the engine flame tube is sleeved on the boss of the support base plate, the upper part of the front ring section of the engine flame tube and the lower part of the spoiler section of the engine flame tube are sleeved on the outer support section of the lower external support assembly, the upper part of the spoiler section of the engine flame tube and the lower part of the rear ring section of the engine flame tube are sleeved on the outer support section of the upper external support assembly, and the upper part of the rear ring section of the engine flame tube is sleeved on the boss of the upper pressure plate.

[0006] Furthermore, a gasket five is arranged between the upper pressing plate and the large nut.

[0007] Furthermore, the lower outer support assembly includes a nut 1, a cone sleeve, a front ring segment cover plate, a front ring segment positioning plate, a spacer block and a front ring segment support plate;

[0008] The cone sleeve, the front ring segment cover plate, the front ring segment positioning plate, the cushion block and the front ring segment support plate are all coaxially arranged with the support core shaft;

[0009] The pad is arranged on the support bottom plate, the front ring segment positioning plate is arranged on the pad, a plurality of centripetally arranged front ring segment guide ridges are integrally arranged on the top of the front ring segment positioning plate, the front ring segment support plate includes a plurality of front ring segment fan-shaped support plates, the inner ring of each front ring segment fan-shaped support plate is provided with a slope inclined from top to bottom toward the center of the circle, a plurality of front ring segment fan-shaped support plates are arranged above the front ring segment positioning plate, each front ring segment fan-shaped support plate is arranged between two adjacent front ring segment guide ridges, a front ring segment cover plate is arranged above the plurality of front ring segment guide ridges, and the front ring segment cover plate and each front ring segment guide ridge are connected by a plurality of groups The positioning assembly is connected and fixed, the bottom of the conical sleeve is an inverted cone, the conical sleeve is sleeved on the supporting core shaft, nut one is located above the conical sleeve and is threadedly connected to the supporting core shaft. In the initial state, the conical sleeve is located above the inner ring of the front ring section support plate, the upper part of the front ring section of the engine flame tube and the lower part of the spoiler section of the engine flame tube are sleeved on the outer wall of the front ring section support plate, and during the tightening process of nut one, the conical sleeve presses the slopes of the multiple front ring section fan-shaped support plates to move the multiple front ring section fan-shaped support plates outward, and the multiple front ring section fan-shaped support plates support the upper part of the front ring section of the engine flame tube and the lower part of the spoiler section of the engine flame tube.

[0010] Furthermore, a gasket 1 is arranged between the nut 1 and the tapered sleeve.

[0011] Furthermore, a front ring segment fan-shaped support plate annular groove is provided in the middle part of the side wall of the front ring segment fan-shaped support plate, a front ring segment flow ring is embedded in the front ring segment fan-shaped support plate annular groove, a front ring segment flow ring is provided on the front ring segment flow ring, a plurality of front ring segment flow ring air holes arranged along its radial direction are provided on the front ring segment fan-shaped support plate, a front ring segment fan-shaped support plate air hole connecting its bottom end surface with the front ring segment fan-shaped support plate annular groove is provided on the front ring segment, a plurality of front ring segment positioning plate air holes arranged along its axial direction are provided on the front ring segment positioning plate, a plurality of supporting base plate air holes arranged along its axial direction are provided on the supporting base plate, and when welding shielding gas is input, it passes through the supporting base plate air holes, the front ring segment positioning plate air holes, the front ring segment fan-shaped support plate air holes and the front ring segment flow ring air holes in sequence.

[0012] Furthermore, the upper outer support assembly includes a second nut, a positioning cone sleeve, a spoiler section cover plate, a spoiler section support plate, a spoiler section positioning plate and a third gasket;

[0013] The positioning cone sleeve, the spoiler section cover plate, the spoiler section support plate, the spoiler section positioning plate and the gasket are all coaxially arranged with the supporting core shaft;

[0014] Gasket three is located above the step of the supporting core shaft, the spoiler section positioning plate is arranged on gasket three, a plurality of centripetally arranged spoiler section guide ridges are integrally arranged on the top of the spoiler section positioning plate, the spoiler section support plate includes a plurality of spoiler section fan-shaped support plates, the inner ring of each spoiler section fan-shaped support plate is provided with a slope inclined from top to bottom toward the center of the circle, a plurality of spoiler section fan-shaped support plates are arranged above the spoiler section positioning plate, each spoiler section fan-shaped support plate is arranged between two adjacent spoiler section guide ridges, a spoiler section cover plate is arranged above a plurality of spoiler section guide ridges, and the spoiler section cover plate and each spoiler section guide ridge are also connected by a plurality of sets of positioning plates. The positioning assembly is connected and fixed, the bottom of the positioning cone sleeve is an inverted cone, the positioning cone sleeve is sleeved on the supporting core shaft, nut two is located in the positioning cone sleeve and is threadedly connected to the supporting core shaft. In the initial state, the positioning cone sleeve is located above the inner ring of the spoiler section support plate, the upper part of the spoiler section of the engine flame tube and the lower part of the cooling section of the engine flame tube are sleeved on the outer wall of the spoiler section support plate, and during the tightening process of nut two, the positioning cone sleeve presses the slopes of multiple spoiler section fan-shaped support plates to move the multiple spoiler section fan-shaped support plates outward, and the multiple spoiler section fan-shaped support plates support the upper part of the spoiler section of the engine flame tube and the lower part of the cooling section of the engine flame tube.

[0015] Furthermore, a gasket four is arranged between the nut two and the positioning cone sleeve.

[0016] Still further, the positioning assembly includes a positioning assembly including a cylindrical pin and a plurality of positioning bolts;

[0017] The front ring segment cover plate and each front ring segment guide ridge are limited by a cylindrical pin, and the two are connected and fixed by a plurality of positioning bolts, and a gasket 2 is installed between the positioning bolts and the top surface of the front ring segment cover plate;

[0018] The spoiler section cover plate and each spoiler section guide ridge are limited by a cylindrical pin, and the two are connected and fixed by a plurality of positioning bolts, and a gasket 2 is arranged between the positioning bolts and the top surface of the spoiler section cover plate.

[0019] Furthermore, a spoiler section fan-shaped support plate annular groove is provided in the middle part of the side wall of the spoiler section fan-shaped support plate. A spoiler section flow ring is embedded in the spoiler section fan-shaped support plate, and a plurality of spoiler section flow ring air holes arranged along its radial direction are provided on the spoiler section fan-shaped support plate, a spoiler section fan-shaped support plate air hole connecting its top end surface with the spoiler section fan-shaped support plate annular groove is provided on the spoiler section fan-shaped support plate, a plurality of spoiler section cover plate air holes arranged along its axial direction are provided on the spoiler section cover plate, and a plurality of upper pressure plate air holes arranged along its axial direction are provided on the upper pressure plate. When welding shielding gas is input, it passes through the upper pressure plate air holes, the spoiler section cover plate air holes, the spoiler section fan-shaped support plate air holes and the spoiler section flow ring air holes in sequence.

[0020] A method for using an assembly tool for preventing deformation during welding of a combustion engine flame tube, comprising the following steps:

[0021] Step 1: Place the support base plate on the bracket platform and then put the front ring section of the engine flame tube on the boss of the chamfered support base plate, evenly distribute multiple pads on the upper surface of the support base plate, place the front ring section positioning plate on the pad, place multiple front ring section fan-shaped support plates on the front ring section positioning plate, and install the front ring section cover plate, put the cone sleeve on the support core shaft of the support base plate. At this time, the cone sleeve is just inserted into the circular hole formed by multiple front ring section support plates, and then put the spoiler section of the engine flame tube on the front ring section of the engine flame tube, assemble nut 1 and gasket 1, tighten nut 1 with socket wrench II to drive the cone sleeve to move downward until the front ring section of the engine flame tube and the spoiler section of the engine flame tube are supported into a circle, install the positioning bolts and tighten them, and after the front ring section cover plate and the front ring section guide ridge are fastened and connected, the positions of the multiple front ring section support plates are determined.

[0022] Step 2: Put in gasket three, put the spoiler section positioning plate on gasket three, put several spoiler section fan-shaped support plates on the spoiler section positioning plate, install the spoiler section cover plate, then put the cooling section of the engine flame tube on the spoiler section of the engine flame tube, put the positioning cone sleeve on the supporting core shaft, and install the upper pressure plate at the same time, first tighten nut two with socket wrench I until the spoiler section of the engine flame tube and the cooling section of the engine flame tube are supported into a circle, then tighten the large nut to make the front ring section of the engine flame tube, the spoiler section of the engine flame tube and the cooling section of the engine flame tube close to the contact end faces.

[0023] Step 3: Inject argon gas into the tooling through the upper plate air holes of the upper plate and the supporting bottom plate air holes of the supporting bottom plate.

[0024] The argon gas enters the cavity of the welding part of the combustion engine flame tube through the air holes of the upper pressure plate, the air holes of the spoiler cover plate, the air holes of the spoiler fan-shaped support plate and the air holes of the spoiler flow ring in sequence to isolate the air;

[0025] Argon gas enters the cavity of the welding part of the combustion engine flame tube through the air holes of the supporting bottom plate, the air holes of the front ring segment positioning plate, the air holes of the front ring segment fan-shaped supporting plate and the air holes of the front ring segment flow ring in sequence to isolate the air;

[0026] Step 4: After the welding is completely cooled, remove the large nut and the upper pressure plate, then remove the nut 2 and the various workpieces of the upper external support assembly, then remove the nut 1 and the various workpieces of the lower external support assembly, and finally remove the welded engine flame tube.

[0027] Beneficial effects:

[0028] The assembly tooling of this scheme can strictly control the shape and position of the flame tube during assembly and prevent its deformation during welding. The tooling is easy to disassemble during use, so that the product meets the design and use requirements, greatly improves the product's qualification rate, and provides guarantee for subsequent overall assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of an assembly tool used to prevent deformation during welding of a combustion engine flame tube;

[0030] Figure 2 yes Figure 1 AA view;

[0031] Figure 3 It is a schematic diagram of the flame tube of a combustion engine;

[0032] Figure 4 It is a partial schematic diagram of the upper pressing plate;

[0033] Figure 5 is a schematic diagram of a positioning cone sleeve;

[0034] Figure 6 is a schematic diagram of the spoiler cover;

[0035] Figure 7 It is a schematic diagram of the flow ring of the spoiler section;

[0036] Figure 8 It is a schematic diagram of the flow ring of the front ring section;

[0037] Fig. 9 is a schematic diagram of the fan-shaped support plate of the spoiler section;

[0038] Fig.10 yes Fig. 9 A top view of

[0039] Fig.11 is a schematic diagram of the spoiler section positioning plate;

[0040] Fig.12 yes Fig.11 A top view of

[0041] Fig.13 is a schematic diagram of a cone sleeve;

[0042] Fig.14 is a schematic diagram of the front ring segment cover;

[0043] Fig.15 is a schematic diagram of the fan-shaped support plate of the front ring segment;

[0044] Fig.16 yes Fig.15 A top view of

[0045] Fig.17 is a schematic diagram of the front ring segment positioning plate;

[0046] Fig.18 yes Fig.17 A top view of

[0047] Fig.19 is a schematic diagram of a supporting mandrel and a supporting base plate;

[0048] Fig. 20 is a schematic diagram of a socket wrench I;

[0049] Fig.21 It is a schematic diagram of socket wrench II. DETAILED DESCRIPTION

[0050] Specific implementation method 1: An assembly tool for preventing deformation during welding of a combustion engine flame tube, comprising an upper pressure plate 1, a large nut 4, a support mandrel 3, a support bottom plate 21, a lower outer support assembly and an upper outer support assembly;

[0051] The lower end of the support core shaft 3 is fixed to the middle part of the support base plate 21, and the lower external support assembly and the upper external support assembly are installed on the support core shaft 3 in sequence from bottom to top and are coaxially arranged with the support core shaft 3. The upper pressure plate 1 is sleeved on the upper part of the upper external support assembly, and the large nut 4 is located above the upper pressure plate 1 and is threadedly connected to the support core shaft 3. When the engine flame tube is installed, the lower part of the front ring segment of the engine flame tube is sleeved on the boss of the support base plate 21, the upper part of the front ring segment of the engine flame tube and the lower part of the spoiler segment of the engine flame tube are sleeved on the outer support segment of the lower external support assembly, the upper part of the spoiler segment of the engine flame tube and the lower part of the rear ring segment of the engine flame tube are sleeved on the outer support segment of the upper external support assembly, and the upper part of the rear ring segment of the engine flame tube is sleeved on the boss of the upper pressure plate 1.

[0052] In the present embodiment: when the engine flame tube is installed, the lower part of the front ring section of the engine flame tube is sleeved on the boss of the supporting bottom plate, the upper part of the front ring section of the engine flame tube and the lower part of the spoiler section of the engine flame tube are sleeved on the outer support section of the lower outer support assembly, the upper part of the spoiler section of the engine flame tube and the lower part of the rear ring section of the engine flame tube are sleeved on the outer support section of the upper outer support assembly, and the upper part of the rear ring section of the engine flame tube is sleeved on the boss of the upper pressure plate. This installation method is simple and easy to operate.

[0053] Specific implementation method 2: An assembly tool for preventing deformation during welding of a combustion engine flame tube, wherein a gasket 5 2 is arranged between an upper pressure plate 1 and a large nut 4.

[0054] Other implementations are the same as the first specific implementation.

[0055] Specific implementation method three: An assembly tool for preventing deformation during welding of a combustion engine flame tube, wherein the lower outer support assembly includes a nut 13, a cone sleeve 15, a front ring segment cover plate 16, a front ring segment positioning plate 19, a cushion block 20 and a front ring segment support plate;

[0056] The cone sleeve 15, the front ring segment cover plate 16, the front ring segment positioning plate 19, the cushion block 20 and the front ring segment support plate are all arranged coaxially with the support core shaft 3;

[0057] The pad 20 is arranged on the support bottom plate 21, the front ring segment positioning plate 19 is arranged on the pad 20, and a plurality of centripetally arranged front ring segment guide ridges 19-1 are integrally arranged on the top of the front ring segment positioning plate 19. The front ring segment support plate includes a plurality of front ring segment fan-shaped support plates 18, and the inner ring of each front ring segment fan-shaped support plate 18 is provided with a slope inclined from top to bottom toward the center of the circle. The plurality of front ring segment fan-shaped support plates 18 are arranged above the front ring segment positioning plate 19, and each front ring segment fan-shaped support plate 18 is arranged between two adjacent front ring segment guide ridges 19-1. The front ring segment cover plate 16 is arranged above the plurality of front ring segment guide ridges 19-1 and the front ring segment cover plate 16 is connected to each front ring segment guide ridge The edge 19-1 is connected and fixed by multiple groups of positioning components. The bottom of the conical sleeve 15 is an inverted cone. The conical sleeve 15 is mounted on the supporting core shaft 3. The nut 13 is located above the conical sleeve 15 and is threadedly connected to the supporting core shaft 3. In the initial state, the conical sleeve 15 is located above the inner ring of the front ring segment support plate, and the upper part of the front ring segment of the engine flame tube and the lower part of the spoiler section of the engine flame tube are mounted on the outer wall of the front ring segment support plate. During the tightening process of the nut 13, the conical sleeve 15 presses the slopes of the multiple front ring segment fan-shaped support plates 18 to move the multiple front ring segment fan-shaped support plates 18 outward, and the multiple front ring segment fan-shaped support plates 18 support the upper part of the front ring segment of the engine flame tube and the lower part of the spoiler section of the engine flame tube.

[0058] In this embodiment: during the tightening process of the nut, the conical sleeve presses against the slope of the multiple front ring segment fan-shaped support plates to move the multiple front ring segment fan-shaped support plates outward, and the multiple front ring segment fan-shaped support plates open the upper part of the front ring segment of the engine flame tube and the lower part of the spoiler segment of the engine flame tube to form a circle.

[0059] Other implementations are the same as the first specific implementation.

[0060] Specific implementation method 4: An assembly tool for preventing deformation during welding of a combustion engine flame tube, wherein a gasket 14 is provided between a nut 13 and a conical sleeve 15.

[0061] Other implementations are the same as the third specific implementation.

[0062] Specific embodiment 5: An assembly tool for preventing deformation during welding of a combustion engine flame tube, wherein a front ring segment fan-shaped support plate annular groove 18-1 is provided in the middle of the side wall of the front ring segment fan-shaped support plate 18, a front ring segment flow ring 17 is embedded in the front ring segment fan-shaped support plate annular groove 18-1, a front ring segment flow ring 17 is provided on the front ring segment flow ring 17, a plurality of front ring segment flow ring air holes 17-1 arranged along its radial direction are provided on the front ring segment fan-shaped support plate 18, a bottom end surface and the front ring segment fan-shaped support plate are provided on the front ring segment fan-shaped support plate The front ring segment fan-shaped support plate air hole 18-2 connected to the annular groove 18-1, the front ring segment positioning plate 19 is provided with a plurality of front ring segment positioning plate air holes 19-2 arranged along its axial direction, and the support base plate 21 is provided with a plurality of support base plate air holes 21-1 arranged along its axial direction. When the welding shielding gas is input, it passes through the support base plate air holes 21-1, the front ring segment positioning plate air holes 19-2, the front ring segment fan-shaped support plate air holes 18-2 and the front ring segment flow ring air holes 17-1 in sequence.

[0063] In this embodiment, when the welding shielding gas is input, it passes through the support bottom plate air holes, the front ring segment positioning plate air holes, the front ring segment fan-shaped support plate air holes and the front ring segment flow ring air holes in sequence, and the welding shielding gas is argon gas.

[0064] Other implementations are the same as the third specific implementation.

[0065] Specific implementation method six: An assembly tool for preventing deformation during welding of a combustion engine flame tube, the upper outer support assembly includes a nut 2 5, a positioning cone sleeve 7, a spoiler section cover plate 8, a spoiler section support plate, a spoiler section positioning plate 11 and a gasket 3 12;

[0066] The positioning cone sleeve 7, the spoiler section cover plate 8, the spoiler section support plate, the spoiler section positioning plate 11 and the gasket three 12 are all arranged coaxially with the supporting core shaft 3;

[0067] Gasket three 12 is located above the step of the support core shaft 3, and the spoiler segment positioning disk 11 is arranged on the gasket three 12. The top of the spoiler segment positioning disk 11 is integrally provided with a plurality of centripetally arranged spoiler segment guide ridges 11-1, and the spoiler segment support plate includes a plurality of spoiler segment fan-shaped support plates 10, and the inner ring of each spoiler segment fan-shaped support plate 10 is provided with a slope inclined from top to bottom toward the center of the circle, and a plurality of spoiler segment fan-shaped support plates 10 are arranged above the spoiler segment positioning disk 11, and each spoiler segment fan-shaped support plate 10 is arranged between two adjacent spoiler segment guide ridges 11-1, and the spoiler segment cover plate 8 is arranged above the plurality of spoiler segment guide ridges 11-1 and the spoiler segment cover plate 8 is connected to each spoiler segment guide ridge The edge 11-1 is also connected and fixed by multiple groups of positioning components. The bottom of the positioning cone sleeve 7 is an inverted cone. The positioning cone sleeve 7 is mounted on the supporting core shaft 3. The nut 25 is located in the positioning cone sleeve 7 and is threadedly connected to the supporting core shaft 3. In the initial state, the positioning cone sleeve 7 is located above the inner ring of the spoiler section support plate, and the upper part of the spoiler section of the engine flame tube and the lower part of the cooling section of the engine flame tube are sleeved on the outer wall of the spoiler section support plate. During the tightening process of the nut 25, the positioning cone sleeve 7 presses the slopes of the multiple spoiler section fan-shaped support plates 10 to move the multiple spoiler section fan-shaped support plates 10 outward, and the multiple spoiler section fan-shaped support plates 10 support the upper part of the spoiler section of the engine flame tube and the lower part of the cooling section of the engine flame tube.

[0068] In this embodiment: during the tightening process of nut 2, the positioning cone sleeve presses against the slope of the multiple spoiler section fan-shaped support plates to move the multiple spoiler section fan-shaped support plates outward, and the multiple spoiler section fan-shaped support plates open the upper part of the spoiler section of the engine flame tube and the lower part of the cooling section of the engine flame tube to form a circle.

[0069] Other implementations are the same as the third specific implementation.

[0070] Specific implementation method seven: An assembly tool for preventing deformation during welding of a combustion engine flame tube, wherein a gasket four 6 is arranged between a nut two 5 and a positioning cone sleeve 7.

[0071] Other implementations are the same as the first specific implementation.

[0072] Specific embodiment eight: An assembly tool for preventing deformation during welding of a combustion engine flame tube, wherein the positioning assembly includes a cylindrical pin 24 and a plurality of positioning bolts 23;

[0073] The front ring segment cover plate 16 and each front ring segment guide ridge 19-1 are limited by a cylindrical pin 24, and the two are connected and fixed by a plurality of positioning bolts 23, and a gasket 22 is installed between the positioning bolts 23 and the top surface of the front ring segment cover plate 16;

[0074] The spoiler section cover plate 8 and each spoiler section guide ridge 11 - 1 are limited by a cylindrical pin 24 , and the two are connected and fixed by a plurality of positioning bolts 23 , and a gasket 22 is installed between the positioning bolts 23 and the top surface of the spoiler section cover plate 8 .

[0075] Other implementations are the same as the sixth specific implementation.

[0076] Specific implementation nine: An assembly tool for preventing deformation during welding of a combustion engine flame tube, wherein the spoiler segment fan-shaped support plate 10 is provided with the spoiler segment fan-shaped support plate annular groove 10-1 in the middle of the side wall thereof. The spoiler segment fan-shaped support plate 10 is embedded with a spoiler segment flow ring 9, and the spoiler segment flow ring 9 is provided with a plurality of spoiler segment flow ring air holes 9-1 arranged along its radial direction, and the spoiler segment fan-shaped support plate 10 is provided with a spoiler segment fan-shaped support plate air hole 10-2 that connects its top surface with the spoiler segment fan-shaped support plate annular groove 10-1, and the spoiler segment cover plate 8 is provided with a plurality of spoiler segment cover plate air holes 8-1 arranged along its axial direction, and the upper pressing plate 1 is provided with a plurality of upper pressing plate air holes 1-1 arranged along its axial direction, and when welding shielding gas is input, it passes through the upper pressing plate air hole 1-1, the spoiler segment cover plate air hole 8-1, the spoiler segment fan-shaped support plate air hole 10-2 and the spoiler segment flow ring air hole 9-1 in sequence. .

[0077] In this embodiment, when the welding shielding gas is input, it passes through the air holes of the upper pressure plate, the air holes of the spoiler section cover plate, the air holes of the spoiler section fan-shaped support plate and the air holes of the spoiler section flow ring in sequence, and the welding shielding gas is argon.

[0078] Other implementations are the same as the sixth specific implementation.

[0079] Specific embodiment 10: A method for using an assembly tool for preventing deformation during welding of a combustion engine flame tube, comprising the following steps:

[0080] Step 1: Place the support base plate 21 on the support platform and then put the front ring section of the combustion engine flame tube on the chamfered boss of the support base plate 21, evenly place multiple pads 20 on the upper surface of the support base plate 21, put the front ring section positioning plate 19 on the pads 20, put multiple front ring section fan-shaped support plates 18 on the front ring section positioning plate 19, and install the front ring section cover plate 16, and put the cone sleeve 15 on the support core shaft 3 of the support base plate 21. At this time, the cone sleeve 15 is only inserted into the support core shaft 3 of the support base plate 21. The front ring section support plate 18 is placed in the circular hole, and then the spoiler section of the engine flame tube is placed on the front ring section of the engine flame tube, and the nut 13 and the gasket 14 are assembled. The nut 13 is tightened with the socket wrench II 26 to drive the cone sleeve 15 to move downward until the front ring section of the engine flame tube and the spoiler section of the engine flame tube are supported into a circle, and the positioning bolts 23 are installed and tightened. After the front ring section cover plate 16 and the front ring section guide ridge 19-1 are fastened and connected, the positions of the multiple front ring section support plates 18 are determined.

[0081] Step 2: Put in gasket three 12, put the spoiler section positioning plate 11 on gasket three 12, put multiple spoiler section fan-shaped support plates 10 on the spoiler section positioning plate 11, and install the spoiler section cover plate 8, then put the cooling section of the engine flame tube on the spoiler section of the engine flame tube, put the positioning cone sleeve 7 on the supporting core shaft 3, and install the upper pressure plate 1 at the same time, first tighten the nut two 5 with socket wrench I25 until the spoiler section of the engine flame tube and the cooling section of the engine flame tube are supported into a circle, and then tighten the large nut 4 to make the front ring section of the engine flame tube, the spoiler section of the engine flame tube and the cooling section of the engine flame tube contact the end faces tightly.

[0082] Step 3: Inject argon gas into the tooling through the upper plate air hole 1-1 of the upper plate 1 and the supporting bottom plate air hole 21-1 of the supporting bottom plate 21.

[0083] The argon gas enters the cavity of the welding part of the combustion engine flame tube through the upper pressure plate air hole 1-1, the spoiler section cover plate air hole 8-1, the spoiler section fan-shaped support plate air hole 10-2 and the spoiler section flow ring air hole 9-1 in sequence to isolate the air;

[0084] The argon gas enters the cavity of the welding part of the combustion engine flame tube through the supporting bottom plate air hole 21-1, the front ring segment positioning plate air hole 19-2, the front ring segment fan-shaped supporting plate air hole 18-2 and the front ring segment flow ring air hole 17-1 in sequence to isolate the air;

[0085] Step 4: After the welding is completely cooled, remove the large nut 4 and the upper pressure plate 1, then remove the nut 2 5 and the various workpieces of the upper external support assembly, then remove the nut 1 13 and the various workpieces of the lower external support assembly, and finally remove the welded engine flame tube.

[0086] Working principle:

[0087] The flame tube is composed of three sections: the front ring section, the spoiler section and the cooling section. The front ring section and the cooling section are rolled into a cylindrical shape by a thin plate and then welded into a cylindrical shape; the spoiler section is rolled into a conical shape by a thin plate and then welded into a conical shape. When each section is rolled and then welded into a cylindrical shape, the interfaces at both end faces are not regular circles but approximate ellipses, which cannot satisfy the requirement that the docking ports of the front ring section and the spoiler section, and the spoiler section and the cooling section are completely aligned. This tooling is required to correct the end faces of each section into a circle and dock them accurately, and ensure that the interfaces of each section are not deformed when welded with argon arc welding.

Claims

1. An assembly tool for preventing deformation of a combustion engine flame tube during welding, characterized in that: It comprises an upper pressing plate (1), a large nut (4), a supporting mandrel (3), a supporting bottom plate (21), a lower outer supporting assembly and an upper outer supporting assembly; The lower end of the support core shaft (3) is fixed to the middle part of the support base plate (21); the lower external support assembly and the upper external support assembly are installed on the support core shaft (3) in sequence from bottom to top and are coaxially arranged with the support core shaft (3); the upper pressure plate (1) is sleeved on the upper part of the upper external support assembly; the large nut (4) is located above the upper pressure plate (1) and is threadedly connected to the support core shaft (3); when the engine flame tube is installed, the lower part of the front ring section of the engine flame tube is sleeved on the boss of the support base plate (21); the upper part of the front ring section of the engine flame tube and the lower part of the spoiler section of the engine flame tube are sleeved on the outer support section of the lower external support assembly; the upper part of the spoiler section of the engine flame tube and the lower part of the rear ring section of the engine flame tube are sleeved on the outer support section of the upper external support assembly; the upper part of the rear ring section of the engine flame tube is sleeved on the boss of the upper pressure plate (1).

2. The assembly tool for preventing deformation of a combustion engine flame tube during welding according to claim 1, characterized in that: A gasket five (2) is arranged between the upper pressing plate (1) and the large nut (4).

3. The assembly tool for preventing deformation during welding of a combustion engine flame tube according to claim 1, characterized in that: The lower outer support assembly comprises a nut 1 (13), a cone sleeve (15), a front ring segment cover plate (16), a front ring segment positioning plate (19), a cushion block (20) and a front ring segment support plate; The cone sleeve (15), the front ring segment cover plate (16), the front ring segment positioning plate (19), the cushion block (20) and the front ring segment support plate are all coaxially arranged with the support core shaft (3); The cushion block (20) is arranged on the supporting bottom plate (21), the front ring segment positioning plate (19) is arranged on the cushion block (20), the top of the front ring segment positioning plate (19) is integrally provided with a plurality of front ring segment guide ridges (19-1) arranged centripetally, the front ring segment support plate comprises a plurality of front ring segment fan-shaped support plates (18), the inner ring of each front ring segment fan-shaped support plate (18) is provided with a slope inclined from top to bottom toward the center of the circle, the plurality of front ring segment fan-shaped support plates (18) are arranged above the front ring segment positioning plate (19), each front ring segment fan-shaped support plate (18) is arranged between two adjacent front ring segment guide ridges (19-1), the front ring segment cover plate (16) is arranged above the plurality of front ring segment guide ridges (19-1), and the front ring segment cover plate (16) is in contact with each front ring segment guide ridge. The convex ridge (19-1) is connected and fixed by multiple groups of positioning components. The bottom of the conical sleeve (15) is inverted cone shape. The conical sleeve (15) is sleeved on the support core shaft (3). The nut (13) is located above the conical sleeve (15) and is threadedly connected to the support core shaft (3). In the initial state, the conical sleeve (15) is located above the inner ring of the front ring section support plate. The upper part of the front ring section of the combustion engine flame tube and the lower part of the spoiler section of the combustion engine flame tube are sleeved on the outer wall of the front ring section support plate. During the tightening process of the nut (13), the conical sleeve (15) presses against the slopes of the multiple front ring section fan-shaped support plates (18) to move the multiple front ring section fan-shaped support plates (18) outward, and the multiple front ring section fan-shaped support plates (18) open the upper part of the front ring section of the combustion engine flame tube and the lower part of the spoiler section of the combustion engine flame tube.

4. The assembly tool for preventing deformation during welding of a combustion engine flame tube according to claim 1, characterized in that: A gasket (14) is arranged between the nut (13) and the tapered sleeve (15).

5. The assembly tool for preventing deformation during welding of a combustion engine flame tube according to claim 3, characterized in that: A front ring segment fan-shaped support plate annular groove (18-1) is provided in the middle of the side wall of the front ring segment fan-shaped support plate (18), a front ring segment flow ring (17) is embedded in the front ring segment fan-shaped support plate annular groove (18-1), a front ring segment flow ring (17) is provided on the front ring segment flow ring (17), a plurality of front ring segment flow ring air holes (17-1) are provided along the radial direction thereof, and a front ring segment fan-shaped support plate (18) is provided on the front ring segment fan-shaped support plate (18) to connect its bottom end surface with the front ring segment fan-shaped support plate annular groove (18-1). The support plate air holes (18-2) are provided on the front ring segment positioning plate (19) and are arranged along the axial direction thereof. The support bottom plate (21) is provided with a plurality of support bottom plate air holes (21-1) arranged along the axial direction thereof. When welding shielding gas is input, it passes through the support bottom plate air holes (21-1), the front ring segment positioning plate air holes (19-2), the front ring segment fan-shaped support plate air holes (18-2) and the front ring segment flow ring air holes (17-1) in sequence.

6. The assembly tool for preventing deformation during welding of a combustion engine flame tube according to claim 3, characterized in that: The upper outer support assembly comprises a second nut (5), a positioning cone sleeve (7), a spoiler section cover plate (8), a spoiler section support plate, a spoiler section positioning plate (11) and a third gasket (12); The positioning cone sleeve (7), the spoiler section cover plate (8), the spoiler section support plate, the spoiler section positioning plate (11) and the gasket three (12) are all coaxially arranged with the supporting core shaft (3); The gasket three (12) is located above the step of the support core shaft (3), the spoiler section positioning plate (11) is arranged on the gasket three (12), the top of the spoiler section positioning plate (11) is integrally provided with a plurality of centripetally arranged spoiler section guide ridges (11-1), the spoiler section support plate comprises a plurality of spoiler section fan-shaped support plates (10), the inner ring of each spoiler section fan-shaped support plate (10) is provided with a slope inclined from top to bottom toward the center of the circle, the plurality of spoiler section fan-shaped support plates (10) are arranged above the spoiler section positioning plate (11), each spoiler section fan-shaped support plate (10) is arranged between two adjacent spoiler section guide ridges (11-1), the spoiler section cover plate (8) is arranged above the plurality of spoiler section guide ridges (11-1), and the spoiler section cover plate (8) is adjacent to each spoiler section guide ridge. The convex ridge (11-1) is also connected and fixed by multiple groups of positioning components. The bottom of the positioning cone sleeve (7) is an inverted cone. The positioning cone sleeve (7) is sleeved on the support core shaft (3). The second nut (5) is located on the positioning cone sleeve (7) and is threadedly connected to the support core shaft (3). In the initial state, the positioning cone sleeve (7) is located above the inner ring of the spoiler section support plate. The upper part of the spoiler section of the engine flame tube and the lower part of the cooling section of the engine flame tube are sleeved on the outer wall of the spoiler section support plate. During the tightening process of the second nut (5), the positioning cone sleeve (7) presses against the slopes of the multiple spoiler section fan-shaped support plates (10) to move the multiple spoiler section fan-shaped support plates (10) outward, and the multiple spoiler section fan-shaped support plates (10) open the upper part of the spoiler section of the engine flame tube and the lower part of the cooling section of the engine flame tube.

7. The assembly tool for preventing deformation of a combustion engine flame tube during welding according to claim 6, characterized in that: A gasket four (6) is arranged between the nut two (5) and the positioning cone sleeve (7).

8. The assembly tool for preventing deformation of a combustion engine flame tube during welding according to claim 6, characterized in that: The positioning assembly comprises a cylindrical pin (24) and a plurality of positioning bolts (23); The front ring segment cover plate (16) and each front ring segment guide ridge (19-1) are limited by a cylindrical pin (24), and the two are connected and fixed by a plurality of positioning bolts (23), and a gasket 2 (22) is installed between the positioning bolts (23) and the top end surface of the front ring segment cover plate (16); The spoiler section cover plate (8) and each spoiler section guide ridge (11-1) are limited by a cylindrical pin (24), and the two are connected and fixed by a plurality of positioning bolts (23). A gasket 2 (22) is installed between the positioning bolts (23) and the top end surface of the spoiler section cover plate (8).

9. The assembly tool for preventing deformation of a combustion engine flame tube during welding according to claim 6, characterized in that: The spoiler section fan-shaped support plate (10) is provided with a spoiler section fan-shaped support plate annular groove (10-1) in the middle of the side wall. The spoiler section fan-shaped support plate (10) is embedded with a spoiler section flow ring (9), and the spoiler section flow ring (9) is provided with a plurality of spoiler section flow ring air holes (9-1) arranged along its radial direction. The spoiler section fan-shaped support plate (10) is provided with a spoiler section fan-shaped support plate that connects its top end surface with the spoiler section fan-shaped support plate annular groove (10-1). The spoiler section cover plate (8) is provided with a plurality of spoiler section cover plate air holes (8-1) arranged along its axial direction, and the upper pressure plate (1) is provided with a plurality of upper pressure plate air holes (1-1) arranged along its axial direction. When welding shielding gas is input, it passes through the upper pressure plate air holes (1-1), the spoiler section cover plate air holes (8-1), the spoiler section sector support plate air holes (10-2) and the spoiler section flow ring air holes (9-1) in sequence.

10. The method for using the assembly tool according to any one of claims 1 to 9, characterized in that: It includes the following steps: Step 1: Place the support base plate (21) on the support platform and then sleeve the front ring section of the combustion engine flame tube on the chamfered boss of the support base plate (21), evenly place a plurality of pads (20) on the upper surface of the support base plate (21), place the front ring section positioning plate (19) on the pads (20), place a plurality of front ring section fan-shaped support plates (18) on the front ring section positioning plate (19), and install the front ring section cover plate (16), sleeve the cone sleeve (15) on the support core shaft (3) of the support base plate (21), and at this time, the cone sleeve (15) is only inserted into the support core shaft (3) of the support base plate (21). The circular hole formed by the plurality of front ring section support plates (18) is then placed on the front ring section of the engine flame tube, and the nut (13) and the gasket (14) are assembled. The nut (13) is tightened with a socket wrench II (26) to drive the cone sleeve (15) to move downward until the front ring section of the engine flame tube and the spoiler section of the engine flame tube are supported into a circle. The positioning bolts (23) are installed and tightened. After the front ring section cover plate (16) and the front ring section guide ridge (19-1) are fastened and connected, the positions of the plurality of front ring section support plates (18) are determined. Step 2: Place gasket three (12), place spoiler section positioning plate (11) on gasket three (12), place multiple spoiler section fan-shaped support plates (10) on spoiler section positioning plate (11), and install spoiler section cover plate (8), then place the cooling section of the engine flame tube on the spoiler section of the engine flame tube, put the positioning cone sleeve (7) on the supporting core shaft (3), and install the upper pressing plate (1) at the same time, first tighten nut two (5) with socket wrench I (25) until the spoiler section of the engine flame tube and the cooling section of the engine flame tube are supported into a circle, and then tighten the large nut (4) to make the front ring section of the engine flame tube, the spoiler section of the engine flame tube and the cooling section of the engine flame tube tightly contact the end faces. Step 3: Inject argon gas into the tooling through the upper plate air hole (1-1) of the upper plate (1) and the supporting plate air hole (21-1) of the supporting plate (21). Argon gas enters the cavity of the welding part of the combustion engine flame tube through the upper pressure plate air hole (1-1), the spoiler section cover plate air hole (8-1), the spoiler section fan-shaped support plate air hole (10-2) and the spoiler section flow ring air hole (9-1) in sequence to isolate the air; Argon gas enters the cavity of the welding part of the combustion engine flame tube by passing through the supporting bottom plate air hole (21-1), the front ring segment positioning plate air hole (19-2), the front ring segment fan-shaped supporting plate air hole (18-2) and the front ring segment flow ring air hole (17-1) in sequence to isolate the air; Step 4: After the welding is completely cooled, remove the large nut (4) and the upper pressure plate (1), then remove the nut two (5) and then remove the various workpieces of the upper outer support assembly, then remove the nut one (13) and then remove the various workpieces of the lower outer support assembly, and finally remove the welded engine flame tube.

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