A support structure for a gas generator

Abstract

This utility model belongs to the technical field of gas generators, and specifically relates to a support structure for gas generators. The support structure for gas generators includes a mounting base, characterized in that: a front support flexible plate is fixed to the front end of the mounting base, a front casing is fixed to the top of the front support flexible plate, a main support flexible plate is fixed to the rear end of the mounting base, a main support column is fixed to the top of the main support flexible plate, a column support pin is installed on the main support column, the column support pin is connected to a tie rod ring, a tie rod is connected between the tie rod ring and the front casing, and the tie rod ring is connected to a load-bearing ring through a tie rod ring support pin. The beneficial effects of this utility model are: this support structure for gas generators, while ensuring effective support and fixation, can guarantee expansion in all directions without generating thermal stress. It can effectively transmit axial force and torque between the stator and rotor. Furthermore, it facilitates adjustment of the angle, gap, and preload during installation.

Description

Technical Field

[0001] This utility model belongs to the field of gas generator technology, and specifically relates to a support structure for a gas generator. Background Technology

[0002] A gas generator is a device that produces combustion gas at a certain pressure and temperature as the working fluid for a turbine. It mainly consists of a rotor and a stator. During operation, the axial forces and torques generated by the rotor and stator are fixed to the ground or a fixed frame through a support. Therefore, the support needs to meet the axial force, torque, and expansion deformation requirements of the rotor and stator during the operation of the gas generator, and also facilitate the installation and adjustment of the gas generator. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a support structure for a gas generator.

[0004] This utility model is achieved through the following technical solution:

[0005] A support structure for a gas generator includes a mounting base, characterized in that: a front support flexible plate is fixed to the front end of the mounting base, a front casing is fixed to the top of the front support flexible plate, a main support flexible plate is fixed to the rear end of the mounting base, a main support column is fixed to the top of the main support flexible plate, a column support pin is installed on the main support column, the column support pin is connected to a tie rod ring, a tie rod is connected between the tie rod ring and the front casing, and the tie rod ring is connected to a load-bearing ring through a tie rod ring support pin.

[0006] A clamping nut is installed at the end of the pull rod, a limiting ring is provided between the clamping nut and the pull rod ring, and a disc-shaped spring disc is provided between the limiting ring and the clamping nut.

[0007] The tie rod ring is connected to the main support column by a tangentially adjustable tie rod.

[0008] An adjustable support rod is provided between the main support column and the mounting base.

[0009] The front casing is fixed to the front support plate, and the front support plate is fixed to the top of the front support flexible plate.

[0010] The main support column is fixed with a diagonal brace between itself and the mounting base.

[0011] The beneficial effects of this utility model are: this support structure for gas generators, while ensuring effective support and fixation, can guarantee expansion in all directions without generating thermal stress. It can effectively transmit axial force and torque between the stator and rotor. Furthermore, it facilitates adjustment of the angle, clearance, and preload during installation. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Appendix Figure 2 This is a schematic diagram of the disc-shaped spring plate mounting structure of this utility model;

[0015] In the diagram, 1 is the mounting base, 2 is the front support flexible plate, 3 is the front casing, 4 is the main support flexible plate, 5 is the main support column, 6 is the column support pin, 7 is the tie rod ring, 8 is the tie rod, 9 is the tie rod ring support pin, 10 is the load-bearing ring, 11 is the clamping nut, 12 is the limit ring, 13 is the disc spring disc, 14 is the tangentially adjustable tie rod, 15 is the adjustable support rod, 16 is the front support plate, and 17 is the diagonal support. Detailed Implementation

[0016] The attached figure shows a specific embodiment of this utility model. This embodiment includes a mounting base 1, a front support flexible plate 2 fixed to the front end of the mounting base 1, a front housing 3 fixed to the top of the front support flexible plate 2, a main support flexible plate 4 fixed to the rear end of the mounting base 1, a main support column 5 fixed to the top of the main support flexible plate 4, a column support pin 6 installed on the main support column 5, the column support pin 6 connected to a tie rod ring 7, a tie rod 8 connected between the tie rod ring 7 and the front housing 3, and a load-bearing ring 10 connected to the tie rod ring 7 via a tie rod ring support pin 9.

[0017] A clamping nut 11 is installed at the end of the pull rod 8. A limiting ring 12 is provided between the clamping nut 11 and the pull rod ring 7. A disc-shaped spring disc 13 is provided between the limiting ring 12 and the clamping nut 11.

[0018] A tangentially adjustable tie rod 14 connects the tie rod ring 7 to the main support column 5. An adjustable support rod 15 is provided between the main support column 5 and the mounting base 1.

[0019] The front casing 3 is fixed to the front support plate 16, and the front support plate 16 is fixed to the top of the front support flexible plate 2. An inclined support 17 is fixed between the main support column 5 and the mounting base 1.

[0020] The support structure for a gas generator using this utility model consists of components such as a mounting base 1, a main support flexible plate 4, a column support pin 6, a tie rod ring support pin 9, an adjustable support rod 15, a tangentially adjustable tie rod 14, a front support flexible plate 2, a front casing 3, and a tie rod 8.

[0021] The main support flexible plate 4 can swing left and right along the axis of the gas generator, with the fixed point below the main support flexible plate 4 as the fulcrum. By adjusting the length of the adjustable support rod 15, the front and rear positions of the gas generator can be finely adjusted.

[0022] The column support pin 6 is the main load-bearing component. The main support column 5 has two column support pins 6 connected to the tie rod ring 7. The extension length of the tie rod ring 7 is adjusted by threaded connection to adjust the distance between the gas generator and the main support column 5. After adjustment, the tie rod ring 7 is locked by a locking device. The tie rod ring 7 has four tie rod ring support pins 9 for connecting to the load-bearing ring 10 of the gas generator.

[0023] Similar to the main support flexible plate 4, the front support flexible plate 2, during gas generator operation, with the main support point as the dead point, causes the front casing 3 to expand forward due to heat. This expansion can be absorbed by the forward swinging deformation of the front support flexible plate 2, thus eliminating thermal expansion stress. A thrust bearing is installed inside the front casing 3. The axial force of the rotor moving forward is transmitted to the front casing 3 through the thrust bearing. The axial force on the front casing 3 can be transmitted to the main support through the tie rod 8, greatly reducing the axial tension borne by the compressor casing.

[0024] During operation, the stator of the gas generator has a large torque. Part of it is transmitted to the mounting base 1 through the support pin, and part of it is transmitted to the mounting base 1 through the tangentially adjustable tie rod 14. At the same time, when there is a gap between the pin hole and the pin shaft, the gap on the side bearing the torque can be eliminated by adjusting the length of the tangentially adjustable tie rod 14.

[0025] Finally, the axial force compensation system uses four tie rod ring support pins 9 to fix the rear tie rod ring 7. The tie rod ring 7 has two suspension points (column support pins 6) for fixing the engine to the frame. Four tie rods 8 are used to fix the front housing, rear housing, and load-bearing ring 10 together. The elasticity of the axial force compensation system is ensured by four disc spring discs 13, which are installed on the tie rods 8 in the area of ​​the tie rod ring 7, the limit ring 12, and the clamping nut 11. The elastic force of the disc spring discs 13 replaces part of the axial force borne by the casing. When the casing thermally expands, the thermal expansion stress is released by compressing the springs.

Claims

1. A support structure for a gas generator, comprising a mounting base (1), characterized in that: The front end of the mounting base (1) is fixed with a front support flexible plate (2), the top of the front support flexible plate (2) is fixed with a front housing (3), the rear end of the mounting base (1) is fixed with a main support flexible plate (4), the top of the main support flexible plate (4) is fixed with a main support column (5), a column support pin (6) is installed on the main support column (5), the column support pin (6) is connected to the tie rod ring (7), the tie rod ring (7) is connected to the front housing (3) with a tie rod (8), and the tie rod ring (7) is connected to the load-bearing ring (10) through the tie rod ring support pin (9).

2. The support structure for a gas generator according to claim 1, characterized in that: A clamping nut (11) is installed at the end of the pull rod (8). A limiting ring (12) is provided between the clamping nut (11) and the pull rod ring (7). A disc-shaped spring disc (13) is provided between the limiting ring (12) and the clamping nut (11).

3. The support structure for a gas generator according to claim 1, characterized in that: The tie rod ring (7) is connected to the main support column (5) by a tangentially adjustable tie rod (14).

4. The support structure for a gas generator according to claim 1, characterized in that: An adjustable support rod (15) is provided between the main support column (5) and the mounting base (1).

5. The support structure for a gas generator according to claim 1, characterized in that: The front casing (3) is fixed to the front support plate (16), and the front support plate (16) is fixed to the top of the front support flexible plate (2).

6. The support structure for a gas generator according to claim 1, characterized in that: An inclined support (17) is fixed between the main support column (5) and the mounting base (1).

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