CN213574232U

CN213574232U - Steam turbine with replaceable blades

Info

Publication number: CN213574232U
Application number: CN202022883367.6U
Authority: CN
Inventors: 刘俊义; 贾尚霖; 李渊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-05
Filing date: 2020-12-05
Publication date: 2021-06-29
Anticipated expiration: 2030-12-05

Abstract

The utility model discloses a steam turbine of removable blade, including main shaft, impeller blade and fixed axle sleeve, the outside of main shaft is equipped with the shaft coupling, and the surface of shaft coupling is connected with the impeller blade to both ends are equipped with the dog about the main shaft, the one end of impeller blade is equipped with first fixed disk, and the other end of impeller blade is equipped with the second fixed disk to first fixed disk and second fixed disk surface all are equipped with the stopper, second fixed disk in-connection has the connecting rod, and the one end of connecting rod runs through first fixed disk, the outside of connecting rod is connected with fixed axle sleeve, and the outside of fixed axle sleeve is connected with movable axle sleeve, movable axle sleeve's rear end is equipped with connecting portion. This steam turbine of removable blade uses many connecting rods to fix, can carry out level and axial fixity to the impeller blade to increase the intensity to connecting the face by fixed axle sleeve, when can making the impeller blade be convenient for change, also increased holistic stability.

Description

Steam turbine with replaceable blades

Technical Field

The utility model relates to a steam turbine technical field specifically is a steam turbine of removable blade.

Background

The steam turbine is also called as a steam turbine engine, and is a rotary steam power device, high-temperature high-pressure steam passes through a fixed nozzle to become accelerated airflow and then is sprayed on blades, so that a rotor provided with blade rows rotates and does work outwards, the steam turbine is main equipment of a modern thermal power plant and is also used in the metallurgical industry, the chemical industry and a ship power device, and the structure of the steam turbine is greatly improved due to the continuous development of the metallurgical technology.

However, the blades of the steam turbine are welded on the outer shaft, so that the blades are very inconvenient to disassemble, the normal use of the steam turbine is guaranteed by long-term maintenance, the blades are required to be cut when being replaced, and corresponding wedge blocks are produced to be welded, so that the operation is troublesome, the strength is not high, fundamental solution is not available, the overall practicability is reduced, and therefore the steam turbine with the replaceable blades is required.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steam turbine of removable blade to the blade that proposes the steam turbine among the solution above-mentioned background art is the welding at the outer axle, and it is very inconvenient to dismantle, needs long-term maintenance to guarantee the normal use of steam turbine, when changing, needs to cut, and produces the voussoir that corresponds and weld, not only troublesome poeration, intensity is not high moreover, unable fundamental solution problem, thereby has reduced the problem of holistic practicality.

In order to achieve the above object, the utility model provides a following technical scheme: a steam turbine with replaceable blades comprises a main shaft, impeller blades and a fixed shaft sleeve, wherein a shaft coupler is arranged on the outer side of the main shaft, the outer surface of the shaft coupler is connected with the impeller blades, check blocks are arranged at the left end and the right end of the main shaft, a first fixed disc is arranged at one end of each impeller blade, a second fixed disc is arranged at the other end of each impeller blade, limit blocks are arranged on the outer surfaces of the first fixed disc and the second fixed disc respectively, a connecting rod is connected in the second fixed disc, one end of the connecting rod penetrates through the first fixed disc, the outer side of the connecting rod is connected with the fixed shaft sleeve, the outer side of the fixed shaft sleeve is connected with a movable shaft sleeve, a connecting part is arranged at the rear end of the movable shaft sleeve, a transmission chain is connected in the connecting part, the, and the bottom of the support frame is provided with a caster, and the support frame is positioned at the front end of the main shaft.

Preferably, the first fixed disk and the second fixed disk are in fit connection with the impeller blades, and the impeller blades are in clamping connection with the coupler.

Preferably, the limiting blocks are connected with the stop blocks in a fitting mode, and the stop blocks are symmetrically arranged on the outer surface of the main shaft.

Preferably, the transmission chain and the movable shaft sleeve form a transmission structure, and the transmission chain is meshed with the driving disc.

Preferably, the fixed shaft sleeve outside is pentagon column structure, and fixed shaft sleeve and activity axle sleeve be swing joint to activity axle sleeve internal surface is connected with the laminating of fixed shaft sleeve outside.

Preferably, the connecting rod is in threaded connection with the first fixed disk and the second fixed disk, the connecting rod is in threaded connection with the fixed shaft sleeve, and the connecting rods are distributed in the first fixed disk at equal intervals.

Compared with the prior art, the beneficial effects of the utility model are that: the steam turbine with the replaceable blades comprises a turbine body,

1. the fixed disks with the same diameter are additionally arranged on the outer sides of the impeller blades and are fixed by the connecting rods, so that the impeller blades can be horizontally and axially fixed, the strength of a connecting surface is increased by the fixed shaft sleeve, the impeller blades can be conveniently replaced, and the overall stability is also increased;

2. the plurality of stop blocks are arranged on the outer side of the main shaft, so that the fixed disc can be conveniently connected with the main shaft, the effect of positioning and mounting can be achieved, and the stress area of the fixed disc and the impeller blade can be increased by matching with the connecting rod, so that the durability of the fixed disc is increased, and the stability of the integral transmission is increased;

3. through setting up fixed axle sleeve and movable shaft sleeve, can be convenient for control the connecting rod, not only increased the convenience of installation, carry out the transmission by the driving chain simultaneously, can carry out rotation control to a plurality of connecting rods simultaneously, can also increase the convenience of dismantling to holistic practicality has been increased.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged schematic view of the area A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the internal structure of the fixing shaft sleeve of the present invention;

fig. 4 is a side view of the first fixing plate of the present invention.

In the figure: 1. a main shaft; 2. a coupling; 3. impeller blades; 4. a first fixed disk; 5. a second fixed disk; 6. a limiting block; 7. a stopper; 8. a drive chain; 9. a speed reducer; 10. a support frame; 11. a caster wheel; 12. fixing the shaft sleeve; 13. a connecting rod; 14. a movable shaft sleeve; 15. a connecting portion; 16. a drive plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a steam turbine with replaceable blades comprises a main shaft 1, impeller blades 3 and a fixed shaft sleeve 12, wherein a shaft coupler 2 is arranged on the outer side of the main shaft 1, the outer surface of the shaft coupler 2 is connected with the impeller blades 3, stoppers 7 are arranged at the left end and the right end of the main shaft 1, a first fixed disc 4 is arranged at one end of each impeller blade 3, a second fixed disc 5 is arranged at the other end of each impeller blade 3, limiting blocks 6 are arranged on the outer surfaces of the first fixed disc 4 and the second fixed disc 5, a connecting rod 13 is connected in the second fixed disc 5, one end of the connecting rod 13 penetrates through the first fixed disc 4, a fixed shaft sleeve 12 is connected on the outer side of the connecting rod 13, a movable shaft sleeve 14 is connected on the outer side of the fixed shaft sleeve 12, a connecting part 15 is arranged at the rear end of the movable shaft sleeve 14, a transmission chain 8 is connected in, the outer side of the speed reducer 9 is connected with a support frame 10, the bottom end of the support frame 10 is provided with a caster 11, and the support frame 10 is located at the front end of the main shaft 1.

The first fixing disc 4 and the second fixing disc 5 are in fit connection with the impeller blades 3, the impeller blades 3 are in clamping connection with the coupler 2, and the impeller blades 3 are conveniently fixed on the outer side of the coupler 2 by mutually fitting the first fixing disc 4 and the second fixing disc 5 with the impeller blades 3, so that the stability of the connection position of the impeller blades 3 is ensured, and the stability of the operation of the impeller blades 3 is also improved while the disassembly and assembly are facilitated;

the limiting blocks 6 are connected with the stop blocks 7 in an attaching mode, the stop blocks 7 are symmetrically arranged on the outer surface of the main shaft 1, the limiting blocks 6 and the stop blocks 7 are the same in number, when the first fixing disc 4 and the second fixing disc 5 are installed, the positioning installation effect can be achieved, the limiting blocks 6 are attached with the stop blocks 7 in the same mode, the connecting stability of the first fixing disc 4 and the second fixing disc 5 and the main shaft 1 can be improved, and the impeller blades 3 can be axially fixed;

the transmission chain 8 and the movable shaft sleeves 14 form a transmission structure, the transmission chain 8 is meshed with the driving disc 16, the transmission chain 8 can synchronously transmit the movable shaft sleeves 14 under the driving of the driving disc 16 along the outer sides of the movable shaft sleeves 14, so that the movable shaft sleeves 14 control the fixed shaft sleeves 12 to rotate, blades can be conveniently mounted and dismounted, and the movable shaft sleeves can synchronously move along with the fixed shaft sleeves 12 in cooperation with the caster wheels 11;

the outer side of the fixed shaft sleeve 12 is of a pentagonal structure, the fixed shaft sleeve 12 is movably connected with the movable shaft sleeve 14, the inner surface of the movable shaft sleeve 14 is attached to the outer side of the fixed shaft sleeve 12, the outer side of the fixed shaft sleeve 12 is pentagonal, the inner part of the fixed shaft sleeve is in threaded transmission with the connecting rod 13, the fixed shaft sleeve 12 can control the connecting rod 13 to be connected with the first fixed disk 4 and the second fixed disk 5, the installation convenience is improved, meanwhile, the connecting rod 13 can be fixed for the second time, and therefore the stability of the connection surface of the first fixed disk 4 and the second fixed disk 5 is improved;

the connecting rod 13 is in threaded connection with the first fixing disc 4 and the second fixing disc 5, the connecting rod 13 is in threaded connection with the fixing shaft sleeve 12, the connecting rod 13 is distributed in the first fixing disc 4 at equal intervals, the connecting rod 13 fixes the first fixing disc 4 and the second fixing disc 5 by utilizing thread braking, so that the first fixing disc 4 and the second fixing disc 5 can be tightly attached to the outer side of the impeller blade 3, and the axial rotation of the first fixing disc 4, the second fixing disc 5 and the impeller blade 3 can be controlled by the connecting rods 13, and the overall stability is further improved.

The working principle is as follows: when the steam turbine with replaceable blades is used, firstly, the impeller blades 3 are connected to the coupler 2 on the outer side of the main shaft 1, then the limiting blocks 6 at one ends of the first fixed disk 4 and the second fixed disk 5 correspond to the positions of the stop blocks 7 on the outer side of the main shaft 1, so that the first fixed disk 4 and the second fixed disk 5 slide towards one end of the impeller blades 3 along the stop blocks 7, the positioning and mounting effects can be achieved, meanwhile, the connecting rod 13 penetrates through the first fixed disk 4 and the second fixed disk 5, the connecting force between the first fixed disk 4 and the second fixed disk 5 and the impeller blades 3 can be more uniform, then the connecting rod 13 corresponds to the thread groove of the second fixed disk 5, then the movable shaft sleeve 14 is clamped on the outer side of the fixed shaft sleeve 12, the speed reducer 9 is started to rotate the driving disk 16 of the driving chain 8, and the driving chain 8 is matched with the connecting part 15, make connecting rod 13 run through in first fixed disk 4, fix impeller blade 3, wherein truckle 11 cooperation support frame 10 can also remove along with driving chain 8 at the colleague that can support driving chain 8 speed reducer 9, when needs are dismantled impeller blade 3, can according to repetition above-mentioned step to holistic practicality has been increased.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A steam turbine with replaceable blades comprises a main shaft (1), impeller blades (3) and a fixed shaft sleeve (12), and is characterized in that: the outer side of the main shaft (1) is provided with a shaft coupler (2), the outer surface of the shaft coupler (2) is connected with impeller blades (3), the left end and the right end of the main shaft (1) are provided with stop blocks (7), one end of each impeller blade (3) is provided with a first fixing disc (4), the other end of each impeller blade (3) is provided with a second fixing disc (5), the outer surfaces of the first fixing disc (4) and the second fixing disc (5) are respectively provided with a limiting block (6), a connecting rod (13) is connected in the second fixing disc (5), one end of the connecting rod (13) penetrates through the first fixing disc (4), the outer side of the connecting rod (13) is connected with a fixing shaft sleeve (12), the outer side of the fixing shaft sleeve (12) is connected with a movable shaft sleeve (14), the rear end of the movable shaft sleeve (14) is provided with a connecting part (15, the internal surface of driving chain (8) is connected with driving-disc (16), and the one end of driving-disc (16) is connected with speed reducer (9), the outside of speed reducer (9) is connected with support frame (10), and the bottom of support frame (10) is equipped with truckle (11) to support frame (10) are located the front end of main shaft (1).

2. The replaceable blade steam turbine of claim 1, wherein: the first fixing disc (4) and the second fixing disc (5) are attached to the impeller blades (3), and the impeller blades (3) are connected with the coupler (2) in a clamping mode.

3. The replaceable blade steam turbine of claim 1, wherein: the limiting blocks (6) are connected with the stop blocks (7) in a laminating mode, and the stop blocks (7) are symmetrically arranged on the outer surface of the main shaft (1).

4. The replaceable blade steam turbine of claim 1, wherein: the transmission chain (8) and the movable shaft sleeve (14) form a transmission structure, and the transmission chain (8) is meshed with the driving disc (16).

5. The replaceable blade steam turbine of claim 1, wherein: the outer side of the fixed shaft sleeve (12) is of a pentagonal structure, the fixed shaft sleeve (12) is movably connected with the movable shaft sleeve (14), and the inner surface of the movable shaft sleeve (14) is attached to the outer side of the fixed shaft sleeve (12).

6. The replaceable blade steam turbine of claim 1, wherein: connecting rod (13) are threaded connection with first fixed disk (4) and second fixed disk (5), and connecting rod (13) are threaded connection with fixed axle sleeve (12), and connecting rod (13) equidistant distribution is in first fixed disk (4).