CN219317005U

CN219317005U - Main shaft device for gas turbine

Info

Publication number: CN219317005U
Application number: CN202320020994.8U
Authority: CN
Inventors: 刘军
Original assignee: Tianjin Huadian Fuyuan Thermal Power Co ltd
Current assignee: Tianjin Huadian Fuyuan Thermal Power Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-07-07
Anticipated expiration: 2033-01-05

Abstract

The utility model provides a main shaft device for a gas turbine, which relates to the field of main shafts and comprises: the shaft body, the mounting hole has been seted up according to the outer end of shaft body, and the draw-in groove has been seted up to the inner wall of mounting hole to the inside of draw-in groove is inlayed and is equipped with the baffle, and the inboard of baffle is provided with fixing bolt, the inner wall of shaft body is provided with the heat conduction piece, and the inboard of heat conduction piece is connected with the heat conduction stick, and the inboard of heat conduction stick is connected with the heat conduction axle, the outside of heat conduction axle is connected with the heating panel, and the outside of heating panel is connected with the fin, and the outer end of heat conduction axle is connected with the end plate, the middle part of end plate is provided with the louvre, and the outside of louvre has been seted up the second connecting hole, and the inside of second connecting hole is provided with connecting bolt. The utility model solves the problems that the inside of a main shaft device in the prior art lacks a heat radiation structure, and the outside lacks a blocking structure, so that a generator component and a turbine unit are easy to damage.

Description

Main shaft device for gas turbine

Technical Field

The utility model relates to the technical field of spindles, in particular to a spindle device for a gas turbine.

Background

With the continuous progress of society, gas turbines are widely used in the power generation industry. The normal operation of gas turbine, the main shaft that does not leave the main shaft device that does not use at present all adopts echelonment structure, and the installation of its turbine blade and other blades is fixed through welding after measuring in advance, and fixed structure can guarantee gas turbine's normal operation like this, through retrieving, it is described in prior art (application number: CN 202021643460.3) this document "a main shaft device for gas turbine, it includes and is echelonment main shaft, the main shaft on set up the open slot along length direction, the open slot evenly set up along main shaft circumferencial direction, the open slot in evenly set up a plurality of screw holes along length direction, the screw hole be used for the fixed mounting of turbine piece. The main shaft device for the gas turbine has a simple structure, can realize free loading and unloading of the turbine blade, improves the convenience of later maintenance, and is convenient for wide popularization and use. "

But in order to facilitate the disassembly and assembly of the partition plate, the main shaft device in the prior art adopts a hollow shaft structure, and the main shaft of the gas turbine is in a high-temperature working environment, and a poor conductor of heat is generated when the main shaft is in air in the hollow shaft, so that the main shaft is not utilized for radiating, the main shaft in the high-temperature environment is not utilized for radiating, the temperature of the main shaft can be transmitted to the inside of the generator, the service lives of the rotor and the stator coil are influenced, and secondly, the outside of the partition plate is lack of a blocking structure, so that external impurities enter the main shaft to cause the vibration of the turbine unit, and the turbine unit is easily damaged for a long time.

Disclosure of Invention

In order to overcome the defects existing in the prior art, a main shaft device for a gas turbine is provided at present, so that the problems that a heat dissipation structure is lacking in the main shaft device in the prior art, and a plugging structure is lacking on the outer side, so that a generator component and a turbine unit are easy to damage are solved.

A main shaft device for a gas turbine, comprising: the novel heat-conducting shaft comprises a shaft body (1), wherein the shaft body (1) is provided with a mounting hole (2), the mounting hole (2) is provided with a clamping groove (13), the clamping groove (13) is embedded with a partition plate (3), the inner side of the partition plate (3) is provided with a fixing bolt (14), the shaft body (1) is provided with a heat-conducting block (8), the heat-conducting block (8) is connected with a heat-conducting rod (9), the heat-conducting rod (9) is connected with a heat-conducting shaft (10), the heat-conducting shaft (10) is connected with a heat-radiating plate (11), the heat-radiating plate (11) is connected with a heat-radiating fin (12), the heat-conducting shaft (10) is connected with an end plate (4), the end plate (4) is provided with a heat-radiating hole (6), the heat-radiating hole (6) is provided with a second connecting hole (15), and the second connecting hole (15) is provided with a connecting bolt (5).

The main shaft device for the gas turbine is characterized in that a first connecting hole (7) is formed in the shaft body (1), the first connecting hole (7) corresponds to the second connecting hole (15), and the first connecting hole (7) is matched with the connecting bolt (5); the clamping groove (13) is axially formed in the shaft body (1) along the shaft body (1), and the clamping groove (13) is arranged along the shaft body (1); the mounting holes (2) are threaded holes, the mounting holes (2) are formed in the circumferential direction of the shaft body (1), and the mounting holes (2) are in threaded connection with the fixing bolts (14).

The main shaft device for the gas turbine is characterized in that the heat conducting rod (9) is welded with the heat conducting shaft (10); the left end of the heat conducting shaft (10) is arranged in the shaft body (1), the heat conducting shaft (10) is connected with the end plate (4), and the heat radiating plate (11) is close to one end of the end plate (4); the heat conducting block (8) is of an arc-shaped plate structure, the heat conducting block (8) is connected with the shaft body (1), and the heat conducting block (8) corresponds to the mounting hole (2) in position.

Advantageous effects

Firstly, an impeller is arranged on the surface of an axle body through a mounting hole and a fixing bolt, then the left end of the axle body is connected with a generator set, after the axle body rotates, the heat conduction block, a heat conduction rod and a heat conduction shaft are utilized to conveniently transfer the heat in the axle body to a heat dissipation plate, then the heat is dissipated through a heat dissipation plate, and further the heat in the axle body is dissipated through an end plate and a heat dissipation hole, so that the heat is prevented from being continuously transferred to the generator set, and the service life of the generator set is prevented from being influenced; utilize end plate, first connecting hole and second connecting hole and connecting bolt, be convenient for fix the end plate at the outer port of axis body, and then avoid external impurity to get into the axis body inside under the circumstances that does not influence the heat dissipation, and then protected turboset.

Drawings

Fig. 1 is a schematic front view of a shaft body according to an embodiment of the present utility model.

Fig. 2 is a schematic cross-sectional view of a shaft according to an embodiment of the utility model.

Fig. 3 is a schematic diagram of a structure a in fig. 1 according to an embodiment of the present utility model.

Fig. 4 is a schematic view of a partial structure of an outer side of a heat conducting shaft according to an embodiment of the present utility model.

In the figure: 1. a shaft body; 2. a mounting hole; 3. a partition plate; 4. an end plate; 5. a connecting bolt; 6. a heat radiation hole; 7. a first connection hole; 8. a heat conduction block; 9. a heat conduction rod; 10. a heat conducting shaft; 11. a heat dissipation plate; 12. a heat sink; 13. a clamping groove; 14. a fixing bolt; 15. and a second connection hole.

Detailed Description

Referring to fig. 1 to 4, the present utility model provides a main shaft device for a gas turbine, comprising: the heat-conducting device comprises a shaft body 1, a mounting hole 2, an end plate 4, a heat-conducting block 8, a heat-conducting rod 9, a heat-conducting shaft 10 and a heat-radiating plate 11.

Specifically, the outer end of the shaft body 1 is provided with the mounting hole 2, and the inner wall of the mounting hole 2 is provided with the clamping groove 13, and the inside of the clamping groove 13 is embedded with the partition plate 3, and the inner side of the partition plate 3 is provided with the fixing bolt 14, the inner wall of the shaft body 1 is provided with the heat conducting block 8, and the inner side of the heat conducting block 8 is connected with the heat conducting rod 9, and the inner side of the heat conducting rod 9 is connected with the heat conducting shaft 10, the outside of the heat conducting shaft 10 is connected with the heating panel 11, and the outside of the heating panel 11 is connected with the fin 12, and the outer end of the heat conducting shaft 10 is connected with the end plate 4, the middle part of the end plate 4 is provided with the louvre 6, and the outside of the louvre 6 is provided with the second connecting hole 15, and the inside of the second connecting hole 15 is provided with the connecting bolt 5.

In the present embodiment, the left end of the shaft body 1 is connected to a generator set, and the outer end of the shaft body 1 is mounted with an impeller of a steam turbine through a fixing bolt 14 and a mounting hole 2.

As a preferred embodiment, the baffle plate 3 is convenient to have a sealing effect on the mounting hole 2 after the fixing bolt 14 is mounted, and the baffle plate 3 is pulled out when the impeller is dismounted, and the impeller can be taken out after the fixing bolt 14 is dismounted.

The outer terminal surface of the shaft body 1 is offered first connecting hole 7, and first connecting hole 7 and second connecting hole 15 position correspond to, and first connecting hole 7 and connecting bolt 5 matees and connects.

As a preferred embodiment, the end plate 4 is easily mounted on the right end of the shaft body 1 through the first coupling hole 7, the second coupling hole 15 and the coupling bolt 5, and is easily disassembled.

The clamping grooves 13 are formed in the shaft body 1 along the axial direction of the shaft body 1, and the clamping grooves 13 are equidistantly arranged along the circumferential direction of the shaft body 1.

As a preferred embodiment, the baffle 3 is conveniently connected with the shaft body 1 in a sliding way through the clamping groove 13, so that the limiting and fixing of the baffle 3 are realized.

The mounting holes 2 are provided as screw holes, and the mounting holes 2 are equidistantly opened along the circumferential direction of the shaft body 1, and the mounting holes 2 are in matching screw connection with the fixing bolts 14.

As a preferred embodiment, the steam turbine impeller is conveniently fixed at the outer end of the shaft body 1 in a ring shape by arranging a plurality of groups of mounting holes 2.

The heat conduction rod 9 is welded on the outer wall of the heat conduction shaft 10 in a cross structure, and the heat conduction rod 9, the heat conduction block 8 and the heat conduction shaft 10 are all made of metal copper.

As a preferred embodiment, the metal copper material is adopted to achieve good heat conduction and transmission effects, so that the heat in the shaft body 1 is emitted to one end of the end plate 4.

The left end of the heat conducting shaft 10 is suspended in the shaft body 1, the right end of the heat conducting shaft 10 is fixedly connected with the end plate 4, and the heat radiating plate 11 is close to one end of the end plate 4.

As a preferred embodiment, the heat radiated through the heat radiating fins 12 is radiated from the heat radiating holes 6 by disposing the heat radiating plate 11 near the side of the end plate 4.

The heat conduction block 8 is arranged into an arc plate structure, the heat conduction block 8 is fixedly connected with the inner wall of the shaft body 1, and the heat conduction block 8 corresponds to the inner and outer positions of the mounting hole 2.

As a preferred embodiment, the heat conducting block 8 is fixedly connected with the inner wall of the shaft body 1, so that a certain internal supporting effect is achieved on the shaft body 1, and the structural strength of the shaft body 1 is enhanced.

Claims

1. A main shaft device for a gas turbine, comprising: shaft body (1), its characterized in that: the utility model discloses a heat-conducting structure, including installation hole (2) is offered to axis body (1), and installation hole (2) offer draw-in groove (13) to draw-in groove (13) inlay and be equipped with baffle (3), and baffle (3) inboard is equipped with fixing bolt (14), axis body (1) is equipped with heat conduction piece (8), and heat conduction piece (8) connect heat conduction stick (9), and heat conduction shaft (10) are connected to heat conduction shaft (10), heating panel (11) are connected to heat-dissipating plate (11), and heating panel (11) connect fin (12), and heat conduction shaft (10) connect end plate (4), end plate (4) are equipped with louvre (6), and the louvre (6) are opened and are had second connecting hole (15), and second connecting hole (15) are equipped with connecting bolt (5).

2. A main shaft device for a gas turbine according to claim 1, characterized in that the shaft body (1) is provided with a first connecting hole (7), the first connecting hole (7) corresponds to the second connecting hole (15) in position, and the first connecting hole (7) is matched with the connecting bolt (5); the clamping groove (13) is axially formed in the shaft body (1) along the shaft body (1), and the clamping groove (13) is arranged along the shaft body (1); the mounting holes (2) are threaded holes, the mounting holes (2) are formed in the circumferential direction of the shaft body (1), and the mounting holes (2) are in threaded connection with the fixing bolts (14).

3. A main shaft device for a gas turbine according to claim 1, characterized in that the heat conducting rod (9) is welded to a heat conducting shaft (10); the left end of the heat conducting shaft (10) is arranged in the shaft body (1), the heat conducting shaft (10) is connected with the end plate (4), and the heat radiating plate (11) is close to one end of the end plate (4); the heat conducting block (8) is of an arc-shaped plate structure, the heat conducting block (8) is connected with the shaft body (1), and the heat conducting block (8) corresponds to the mounting hole (2) in position.