Turbine generator coupling bolt dismounting and mounting device

Abstract

The utility model relates to the technical field of steam turbine generator coupling bolt disassembly and assembly, in particular to a steam turbine generator coupling bolt disassembly and assembly device which comprises a disassembly and assembly device cylinder body, a connecting rod is arranged on the disassembly and assembly device cylinder body, a reinforcing rib and a disassembly and assembly head are arranged on the connecting rod, and an arc-shaped inverted face is arranged on the disassembly and assembly head. A lengthening rod is connected into the replacer barrel body in a sliding mode, a first clamping groove, a second clamping groove and a built-in groove are formed in the lengthening rod, a fixing base and a labor-saving grab handle are arranged in the built-in groove, a connecting shaft is arranged on the labor-saving grab handle, a rotating disc is arranged on the connecting shaft, a first locking groove and a second locking groove are formed in the rotating disc, and a machine meter screw is arranged on the lengthening rod. And a positioning pin is arranged on the replacer cylinder body. According to the dismounting and mounting device for the coupler bolt on the steam turbine generator, the dismounting labor-saving performance is improved, the structural stability between the dismounting and mounting device cylinder body and the connecting rod in the dismounting process is improved, and the dismounting and mounting head can be smoothly inserted into an inner hexagonal groove of a bolt cap on a coupler.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine generator coupling bolt disassembly and installation, in particular to a steam turbine generator coupling bolt disassembly and installation device. Background Art

[0002] A steam turbine generator is a device that converts thermal energy into electrical energy. It is mainly composed of two parts: a steam turbine and a generator. Its working principle is to use the thermal energy of steam to drive the steam turbine to rotate, and then drive the generator to generate electricity. Steam turbine generators are widely used in energy fields such as thermal power plants, nuclear power plants, and gas power plants.

[0003] Among them, the turbine coupling is connected to the generator coupling through a coupling, which in turn drives the generator coupling to rotate, drives the generator rotor to rotate, and the generator rotor cuts the magnetic lines to generate induced electromotive force, forming current and realizing the output of electrical energy.

[0004] The coupling on the steam turbine generator is a wearing part, which is prone to wear after long-term use and needs to be disassembled, replaced and installed. The coupling is generally composed of a first flange coupling and a second flange coupling. The turbine coupling key is connected to the first flange coupling, and the generator coupling key is connected to the second flange coupling. Finally, the first flange coupling and the second flange coupling are fixedly connected by bolts to achieve the coupling transmission effect.

[0005] At present, when removing the bolts of the existing disassembler barrel body for the coupling on the steam turbine generator, the preset disassembly head on the disassembler barrel body is generally inserted horizontally into the hexagonal groove of the bolt cap, and then the disassembler barrel body is held and rotated by hand to remove the bolts. However, if the bolts are locked too tightly and the torque of the hand holding the disassembler barrel body horizontally is too small, the hand will need to use a lot of force to rotate, which is very laborious, greatly reducing the labor-saving disassembly of the disassembler and installer for the coupling bolts on the steam turbine generator.

[0006] The above problems are widespread and urgently need to be improved. Utility Model Content

[0007] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes a steam turbine generator coupling bolt disassembly and installation device.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A steam turbine generator coupling bolt disassembly and installation device is designed, including a disassembler barrel body, a connecting rod is arranged on the disassembler barrel body, a reinforcing rib and a disassembly head are arranged on the connecting rod, an arc-shaped inverted surface is arranged on the disassembler barrel body, an extension rod is slidably connected in the disassembler barrel body, a first clamping groove, a second clamping groove and a built-in groove are opened on the extension rod, a fixing seat and a labor-saving handle are arranged in the built-in groove, a connecting shaft is arranged on the connecting shaft, a turntable is arranged on the turntable, a first locking groove and a second locking groove are arranged, a machine screw is arranged on the extension rod, and a positioning pin is arranged on the disassembler barrel body.

[0010] Furthermore, the side cross-section of the extension rod is a square structure, and the machine screw is threadedly connected to the disassembler barrel body, and the machine screw is not higher than the side wall of the extension rod.

[0011] Furthermore, the fixing seat is arranged in the built-in groove, the labor-saving handle is rotatably arranged with the fixing seat via a connecting shaft, and the overall inner cavity size of the built-in groove is not less than the overall size of the labor-saving handle.

[0012] Furthermore, a positioning plate is provided at the right end of the extension rod, and the side surface of the positioning plate is a circular structure and the overall size is not less than the side surface size of the extension rod.

[0013] Furthermore, the positioning pin is slidably connected to the disassembler barrel body, a pin cap is provided on the positioning pin, and a spring is provided between the disassembler barrel body and the pin cap.

[0014] Furthermore, the cross section of the reinforcing rib is a triangular structure, and there are eight reinforcing ribs arranged circumferentially and disposed between the disassembler barrel body and the connecting rod.

[0015] Furthermore, the side section of the disassembly head is a regular hexagonal structure, and the arc-shaped inverted surface is arranged at the left corner of the disassembly head.

[0016] The utility model provides a steam turbine generator coupling bolt disassembly and installation device, which has the following beneficial effects:

[0017] 1. The utility model provides a sliding positioning extension rod structure in the disassembler barrel body, and provides a labor-saving handle structure that can be rotated and folded for positioning in the extension rod. When it is necessary to disassemble and replace the coupling on the steam turbine generator, the extension rod is first slid out to position, and then the labor-saving handle is rotated, folded and positioned. Then, the disassembly head is inserted into the hexagonal groove of the bolt cap on the coupling. The bolt can be removed by holding the labor-saving handle and rotating it, thereby improving the labor-saving disassembly of the disassembly and installation device for the coupling bolts on the steam turbine generator.

[0018] 2. The utility model improves the structural stability between the disassembler barrel body and the connecting rod during the disassembly process by arranging a reinforcing rib structure between the disassembler barrel body and the connecting rod.

[0019] 3. The utility model provides an arc-shaped inverted surface structure on the disassembly head, so that the disassembly head can be smoothly inserted into the hexagonal groove of the bolt cap on the coupling, so as to facilitate the disassembly of the bolt later. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the utility model in which the extension rod and the labor-saving handle have been extended, rotated, folded and released;

[0021] Figure 2 It is a three-dimensional schematic diagram of the extension rod and the labor-saving handle of the utility model in a state of being retracted, rotated, folded and stored;

[0022] Figure 3 For the utility model Figure 1 A local enlarged view of point A in FIG.

[0023] Figure 4 For the utility model Figure 2 A schematic diagram of a top view of the overall structure;

[0024] Figure 5 For the utility model Figure 4 Middle BB section;

[0025] Figure 6 For the utility model Figure 1 Schematic diagram of the medium-effort grip.

[0026] In the figure: 1 disassembler barrel body; 2 connecting rod; 21 reinforcing rib; 22 disassembly head; 23 arc-shaped inverted surface; 3 extension rod; 31 machine screw; 32 positioning plate; 33 first card slot; 34 second card slot; 4 built-in slot; 41 fixed seat; 5 labor-saving handle; 51 connecting shaft; 6 turntable; 61 first locking slot; 62 second locking slot; 7 positioning pin; 71 pin cap; 72 spring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figure 1-6A steam turbine generator coupling bolt disassembly and installation device comprises a disassembly and assembly device barrel body 1, a connecting rod 2 is arranged on the disassembly and assembly barrel body 1, a reinforcing rib 21 and a disassembly and assembly head 22 are arranged on the connecting rod 2, an arc-shaped inverted surface 23 is arranged on the disassembly and assembly barrel body 1, an extension rod 3 is slidably connected in the disassembly and assembly barrel body 1, a first card groove 33, a second card groove 34 and a built-in groove 4 are opened on the extension rod 3, a fixing seat 41 and a labor-saving handle 5 are arranged in the built-in groove 4, a connecting shaft 51 is arranged on the connecting shaft 51, a turntable 6 is arranged on the turntable 6, a first locking groove 61 and a second locking groove 62 are arranged on the turntable 6, a machine screw 31 is arranged on the extension rod 3, a positioning pin 7 is arranged on the disassembly and assembly barrel body 1, and when the labor-saving handle 5 rotates, the turntable 6 will also rotate accordingly.

[0029] In detail, the side cross-section of the extension rod 3 is a square structure, which prevents the extension rod 3 from sliding and rotating.

[0030] The machine screw 31 is threadedly connected to the disassembler barrel body 1, and the machine screw 31 is not higher than the side wall of the extension rod 3. The machine screw 31 is a prior art, and its outer end is pre-set with an inner hexagonal groove, and the machine screw 31 can be quickly rotated by an inner hexagonal wrench.

[0031] Furthermore, the fixing seat 41 is arranged in the built-in groove 4, and the labor-saving handle 5 is rotatably arranged with the fixing seat 41 through the connecting shaft 51. The overall inner cavity size of the built-in groove 4 is not less than the overall size of the labor-saving handle 5, ensuring that the labor-saving handle 5 is rotated and folded as a whole and stored in the built-in groove 4.

[0032] Furthermore, a positioning plate 32 is provided at the right end of the extension rod 3. The side surface of the positioning plate 32 is a circular structure and the overall size is not smaller than the side size of the extension rod 3. When the extension rod 3 is slid into the disassembler barrel body 1, the positioning plate 32 can achieve limited positioning, so as to facilitate holding the positioning plate 32 and sliding the extension rod 3 out later.

[0033] In more detail, the positioning pin 7 is slidably connected to the disassembler barrel body 1, a pin cap 71 is provided on the positioning pin 7, a spring 72 is provided between the disassembler barrel body 1 and the pin cap 71, and the spring 72 is made of high-quality spring steel, has strong retraction and is stable.

[0034] In general, the cross-section of the reinforcing rib 21 is a triangular structure. There are eight reinforcing ribs 21 arranged circumferentially and disposed between the disassembler barrel body 1 and the connecting rod 2. The reinforcing rib 21 is made of hard alloy steel with high strength. Combined with the stability of the triangular structure, the structural stability between the disassembler barrel body 1 and the connecting rod 2 is improved during the disassembly process.

[0035] Finally, the side section of the disassembly head 22 is a regular hexagonal structure, and the arc-shaped inverted surface 23 is arranged at the left corner of the disassembly head 22. The surface of the arc-shaped inverted surface 23 is flat and smooth, so that the disassembly head 22 can be smoothly inserted into the hexagonal groove of the bolt cap on the coupling.

[0036] Working method: When the coupling on the turbine generator needs to be disassembled and replaced, refer to Figure 2 and Figure 5 , it is the initial state, first pull the pin cap 71 outward, drive the positioning pin 7 to slide outward and exit the first slot 33, at this time the spring 72 is stretched and deformed, then the extension rod 3 slides out to the right, and then the positioning pin 7 is loosened, the spring 72 pulls back the pin cap 71 and drives the positioning pin 7 to slide quickly and snap into the aligned second slot 34, and then the machine screw 31 is rotated counterclockwise, and the machine screw 31 is driven to move outward and exit the first locking slot 61 through the threaded transmission, the rotation of the machine screw 31 is stopped, and then the effort-saving handle 5 is rotated outward horizontally until it is perpendicular to the extension rod 3 in the horizontal plane, and then the machine screw 31 is rotated clockwise, and the machine screw 31 is driven to snap into the aligned second locking slot 62 through the threaded transmission, and then the disassembly head 22 is inserted into the preset hexagonal groove of the bolt cap of the bolt on the coupling, refer to Figure 1 , you can hold the labor-saving handle 5 and turn it. Since the torque has been lengthened at this time, the bolt can be removed with little effort, thereby improving the labor-saving disassembly of the disassembly and installation device for the coupling bolts on the steam turbine generator.

[0037] Furthermore, by providing the reinforcing rib 21 structure between the disassembler barrel body 1 and the connecting rod 2, the structural stability between the disassembler barrel body 1 and the connecting rod 2 is improved during the disassembly process.

[0038] In addition, by providing an arc-shaped inverted surface 23 structure on the disassembly head 22, the disassembly head 22 can be smoothly inserted into the hexagonal groove of the bolt cap on the coupling, so that the bolt can be easily disassembled later.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steam turbine generator coupling bolt disassembly and installation device, comprising a disassembly and installation device barrel body (1), Features: The disassembler barrel body (1) is provided with a connecting rod (2), the connecting rod (2) is provided with a reinforcing rib (21) and a disassembly head (22), the disassembly head (22) is provided with an arc-shaped inverted surface (23), the disassembler barrel body (1) is slidably connected with an extension rod (3), the extension rod (3) is provided with a first clamping groove (33), a second clamping groove (34), and a built-in groove (4), the built-in groove (4) is provided with a fixing seat (41) and a labor-saving handle (5), the labor-saving handle (5) is provided with a connecting shaft (51), the connecting shaft (51) is provided with a rotating disk (6), the rotating disk (6) is provided with a first locking groove (61) and a second locking groove (62), the extension rod (3) is provided with a machine screw (31), and the disassembler barrel body (1) is provided with a positioning pin (7).

2. A steam turbine generator coupling bolt disassembly and installation device according to claim 1, Features: The side cross-section of the extension rod (3) is a square structure, and the machine screw (31) is threadedly connected to the disassembler barrel body (1), and the machine screw (31) is not higher than the side wall of the extension rod (3).

3. A steam turbine generator coupling bolt disassembly and installation device according to claim 1, Features: The fixing seat (41) is arranged in the built-in groove (4), the labor-saving handle (5) is rotatably arranged with the fixing seat (41) via a connecting shaft (51), and the overall inner cavity size of the built-in groove (4) is not less than the overall size of the labor-saving handle (5).

4. A steam turbine generator coupling bolt disassembly and installation device according to claim 1, Features: A positioning plate (32) is provided at the right end of the extension rod (3); the side surface of the positioning plate (32) is a circular structure and the overall size is not less than the side surface size of the extension rod (3).

5. A steam turbine generator coupling bolt disassembly and installation device according to claim 1, Features: The positioning pin (7) is slidably connected to the disassembler barrel body (1), a pin cap (71) is provided on the positioning pin (7), and a spring (72) is provided between the disassembler barrel body (1) and the pin cap (71).

6. A steam turbine generator coupling bolt disassembly and installation device according to claim 1, Features: The cross section of the reinforcing rib (21) is a triangular structure. The reinforcing ribs (21) are eight in number and arranged circumferentially and are disposed between the disassembler barrel body (1) and the connecting rod (2).

7. A steam turbine generator coupling bolt disassembly and installation device according to claim 1, Features: The side section of the disassembling head (22) is a regular hexagonal structure, and the arc-shaped inverted surface (23) is arranged at the left corner of the disassembling head (22).

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