CN220698650U - Welding positioning fixture for labyrinth seal sleeve of gas turbine - Google Patents
Welding positioning fixture for labyrinth seal sleeve of gas turbine Download PDFInfo
- Publication number
- CN220698650U CN220698650U CN202321969057.3U CN202321969057U CN220698650U CN 220698650 U CN220698650 U CN 220698650U CN 202321969057 U CN202321969057 U CN 202321969057U CN 220698650 U CN220698650 U CN 220698650U
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- China
- Prior art keywords
- sleeve
- pressing
- mandrel
- labyrinth seal
- welding
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- 238000003466 welding Methods 0.000 title claims abstract description 33
- 238000003825 pressing Methods 0.000 claims abstract description 73
- 230000006835 compression Effects 0.000 claims abstract description 15
- 238000007906 compression Methods 0.000 claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract 1
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to a welding positioning fixture for a labyrinth seal sleeve of a fuel machine, which comprises a guard plate pressing device, an air seal sleeve pressing device, a chassis and a mandrel; the mandrel is arranged at the center of the chassis; the guard plate pressing device comprises a pressing screw, a groove surface pressing block, a sleeve, a plate and a nut; the sleeve is arranged at the top of the mandrel, and the sleeve and the plate are fixed in a welding mode; the compression screw is in threaded connection with the plate; the groove face pressing block is arranged at the bottom of the compression screw; the air seal sleeve pressing device comprises a shaft sleeve, a hexagonal nut, a pressing sleeve A, a pressing sleeve B and a disc spring; the shaft sleeve is arranged on the outer side of the mandrel; the hexagonal nut, the disc spring, the pressing sleeve A and the pressing sleeve B are sequentially arranged on the shaft sleeve from top to bottom, and the outer diameters of the pressing sleeve A and the pressing sleeve B are stepped. The welding device is high in accuracy, stable, durable, high in quality, high in efficiency, convenient to operate and suitable for being popularized and used in positioning and clamping in the welding process of the labyrinth seal sleeve.
Description
Technical Field
The utility model belongs to the technical field of special welding forming, and particularly relates to a welding positioning fixture for a labyrinth seal sleeve of a combustion engine.
Background
The gas turbine is a complex and precise high-tech product, works in a severe environment with high temperature, high pressure and high rotating speed, the labyrinth seal sleeve is used as a structural component for sealing the gas turbine, the working reliability of the labyrinth seal sleeve directly influences the stable operation of the gas turbine, and the labyrinth seal sleeve works under the condition of lubricating oil supply. The lubricating oil leakage not only affects the economy of the gas turbine, but also generates carbon deposition when the leaked lubricating oil meets a high-temperature component, affects the heat exchange efficiency of a hot-end component, seriously affects the integral safety of the operation of the gas turbine, and leads to the failure of the gas turbine. The existing lubricating oil seal in the gas turbine adopts a labyrinth seal structure, a protecting plate in the labyrinth seal sleeve is fixed by adopting a welding procedure, the position and the size during welding cannot meet the requirements of a design drawing, and when the components are matched for long-term use, the sealing performance is poor, so that lubricating oil leakage is easy to occur, the long-term sealing performance of a lubricating oil system of the gas turbine cannot be met, and therefore, the protecting plate needs to be fixed at a reliable position in the welding forming process of the labyrinth seal sleeve of a certain model, and welding deformation is prevented.
Disclosure of Invention
The utility model aims to provide the welding positioning fixture for the labyrinth seal sleeve of the gas turbine, which is high in accuracy and convenient to operate, and ensures that the size of a welding position reaches the design requirement.
A welding positioning fixture for a labyrinth seal sleeve of a gas turbine comprises a guard plate pressing device, a gas seal sleeve pressing device, a chassis and a mandrel; the mandrel is arranged at the center of the chassis; the guard plate pressing device comprises a pressing screw, a groove surface pressing block, a sleeve, a plate and a nut; the sleeve is arranged at the top of the mandrel, and the sleeve and the plate are fixed in a welding mode; the compression screw is in threaded connection with the plate; the groove face pressing block is arranged at the bottom of the compression screw; the air seal sleeve pressing device comprises a shaft sleeve, a hexagonal nut, a pressing sleeve A, a pressing sleeve B and a disc spring; the shaft sleeve is arranged on the outer side of the mandrel; the hexagonal nut, the disc spring, the pressing sleeve A and the pressing sleeve B are sequentially arranged on the shaft sleeve from top to bottom, and the outer diameters of the pressing sleeve A and the pressing sleeve B are stepped.
Further, the compression screw is in snap fit with the groove face pressing block, the groove face pressing block moves in the groove at the lower end of the compression screw in the angle direction, and the top structure of the compression screw is of a spherical structure.
Further, the chassis is installed in the switching dish bottom, and switching dish lower extreme is connected with the round pin.
The utility model has the beneficial effects that: (1) Under the condition that the assembly requirement of the labyrinth seal sleeve is met, the welding deformation is controlled, the machining process is simplified, the manufacturing period is saved, and the cost is reduced. (2) The labyrinth seal sleeve welding positioning fixture is convenient for assembly positioning and welding assembly of sheet metal parts such as guard plates, and ensures the assembly quality of butt welding seams and the shape, size and position size of each part during assembly. (3) The adapter plate is fixed with the chassis through M10 bolts, the lower end of the adapter plate is connected with the pin, the pin is connected with the flange of the positioner during welding, the rotating speed is adjusted along with the circumferential movement of the positioner, the welding work is performed, and the labor force is saved. (4) The top structure of the screw is in a spherical structure, and the groove surface pressing block adjusts the optimal position according to the curved surface of the groove surface pressing block when the guard plate is welded, so that the friction force of the groove surface pressing block is reduced. The design of the mechanism realizes convenient and quick position adjustment. The welding device is high in accuracy, stable, durable, high in quality, high in efficiency, convenient to operate and suitable for being popularized and used in positioning and clamping in the welding process of the labyrinth seal sleeve.
Drawings
FIG. 1 is an assembly view of the present utility model;
FIG. 2 is a top view of an assembly of the present utility model;
FIG. 3 is a view showing a shackle structure of the present utility model;
FIG. 4 is a shield compression assembly of the present utility model;
FIG. 5 is a top view of the shield compression device of the present utility model;
FIG. 6 shows a gas seal packing apparatus of the present utility model;
FIG. 7 shows a base assembly of the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1-7, a welding positioning fixture for a labyrinth seal sleeve of a gas turbine is characterized by comprising a guard plate pressing device, a gas seal sleeve pressing device, a chassis 10 and a mandrel 15; the mandrel 15 is arranged at the center of the chassis 10, and when the mandrel 15 is assembled, the mandrel 15 is matched with the chassis 10 by adopting a spigot, and in order to ensure that the structural connection strength is high, the mandrel is fixed by adopting a welding mode; the guard plate pressing device comprises a pressing screw 1, a groove surface pressing block 2, a sleeve 3, a plate 4 and a nut 5; the sleeve 3 is arranged at the top of the mandrel 15, and the sleeve 3 and the plate 4 are fixed in a welding mode; the compression screw 1 and the plate 4 are connected by adopting threads; the groove face pressing block 2 is arranged at the bottom of the pressing screw 1, and the pressing screw 1 is screwed in to adjust the distance between the groove face pressing block 2 and the welding guard plate, so that the clamp force can be adjusted; the air seal sleeve pressing device comprises a shaft sleeve 6, a hexagonal nut 7, a pressing sleeve A8, a pressing sleeve B9 and a disc spring 11; the shaft sleeve 6 is arranged outside the mandrel 15; the hexagonal nut 7, the disc spring 11, the pressing sleeve A8 and the pressing sleeve B9 are sequentially arranged on the shaft sleeve 6 from top to bottom, the outer diameter of the shaft sleeve 6 is processed into T-shaped external threads, the hexagonal nut 7 is connected with the shaft sleeve 6 through the T-shaped external threads, the disc spring 11 is arranged between the hexagonal nut 7 and the pressing sleeve 8, when the hexagonal nut 7 is screwed, screwing force is conducted through the disc spring 11, the stress is uniform, the outer diameter of the pressing sleeve 8 is partially processed into a step shape, the upper end of the labyrinth seal sleeve is fixedly pressed at the step position during assembly, the outer diameter of the pressing sleeve 9 is partially processed into a step shape, and the lower end of the labyrinth seal sleeve is fixedly pressed at the step position during assembly. The inner diameters of the pressing sleeve 8 and the pressing sleeve 9 are in clearance fit with the outer diameter of the shaft sleeve 6, and when the sleeve is assembled, the step positions enable the upper end and the lower end of the labyrinth seal sleeve to be fixed under the action of screwing force, and the stress is more uniform.
The flange 12 is connected with the chassis 10 through bolts, when the flange 12 is assembled, the middle of the chassis 10 is provided with a labyrinth seal sleeve disk end, and when the flange is screwed, the flange is fixed at 12 points through M10 bolts 21 and nuts 22.
The pressing screw 1 and the groove face pressing block 2 are in snap fit, the groove face pressing block 2 moves in the groove at the lower end of the pressing screw 1 in an angular direction, the top structure of the pressing screw 1 is of a spherical structure, the groove face pressing block 2 adjusts the optimal position according to the curved surface of the groove face pressing block when a guard plate is welded, and the friction force of the groove face pressing block is reduced.
The adapter plate is fixed with the chassis through M10 bolt 21, and adapter plate lower extreme connecting pin 13 makes the round pin connect the positioner flange, and along with the positioner circumferential motion, the rotational speed is adjusted, carries out welding work shackle 14 rated load 2t, is connected with the dabber through the round pin, conveniently transports.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (3)
1. The welding positioning fixture for the labyrinth seal sleeve of the gas turbine is characterized by comprising a guard plate pressing device, a gas seal sleeve pressing device, a chassis (10) and a mandrel (15); the mandrel (15) is arranged at the center of the chassis (10); the guard plate pressing device comprises a pressing screw (1), a groove surface pressing block (2), a sleeve (3), a plate (4) and a nut (5); the sleeve (3) is arranged at the top of the mandrel (15), and the sleeve (3) and the plate (4) are fixed in a welding mode; the compression screw (1) is in threaded connection with the plate (4); the groove face pressing block (2) is arranged at the bottom of the compression screw (1); the air seal sleeve pressing device comprises a shaft sleeve (6), a hexagonal nut (7), a pressing sleeve A (8), a pressing sleeve B (9) and a disc spring (11); the shaft sleeve (6) is arranged at the outer side of the mandrel (15); the hexagonal nut (7), the disc spring (11), the pressing sleeve A (8) and the pressing sleeve B (9) are sequentially arranged on the shaft sleeve (6) from top to bottom, and the outer diameters of the pressing sleeve A (8) and the pressing sleeve B (9) are stepped.
2. The welding positioning fixture for the labyrinth seal sleeve of the gas turbine according to claim 1, wherein the compression screw (1) is in snap fit with the groove face pressing block (2), the groove face pressing block (2) moves in the angle direction in a groove at the lower end of the compression screw (1), and the top structure of the compression screw (1) is in a spherical structure.
3. A welding positioning fixture for a labyrinth seal sleeve of a combustion engine according to claim 1, wherein the chassis (10) is arranged at the bottom end of a switching disc, and the lower end of the switching disc is connected with the pin (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321969057.3U CN220698650U (en) | 2023-07-25 | 2023-07-25 | Welding positioning fixture for labyrinth seal sleeve of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321969057.3U CN220698650U (en) | 2023-07-25 | 2023-07-25 | Welding positioning fixture for labyrinth seal sleeve of gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220698650U true CN220698650U (en) | 2024-04-02 |
Family
ID=90442759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321969057.3U Active CN220698650U (en) | 2023-07-25 | 2023-07-25 | Welding positioning fixture for labyrinth seal sleeve of gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220698650U (en) |
-
2023
- 2023-07-25 CN CN202321969057.3U patent/CN220698650U/en active Active
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| GR01 | Patent grant |