Loading device for mounting moving blade of steam turbine

Abstract

The utility model relates to a loading device for steam turbine moving blade installation, and belongs to the technical field of steam turbine assembly.The loading device comprises a movable base, a lifting platform and a loading mechanism, the lifting platform is installed on the movable base, the loading mechanism is installed on the lifting platform, the loading mechanism comprises supporting plates which are symmetrically arranged, and supporting blocks are fixed to the top ends of the supporting plates; notches are formed in the side portions of the supporting blocks, a limiting groove is formed between the notches in the two sides, baffles are rotationally connected to the two sides of the supporting block on one side respectively, and clamping grooves are formed in the two sides of the supporting block on the other side respectively. The movable base, the lifting table and the loading mechanism are arranged, the movable base moves in the vertical direction of the main shaft of the steam turbine, the moving blade is positioned and clamped in the loading mechanism, and during installation, the moving blade only needs to be lifted to a proper installation position through the lifting table; and a subsequent worker only needs to push the moving blade into the main shaft mounting groove from one side, so that the labor intensity of the worker is greatly reduced, and the mounting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of steam turbine assembly, in particular to a loading device for steam turbine moving blade installation. BACKGROUND

[0002] The blade is a key part of the steam turbine and one of the most delicate and important parts. It bears the combined action of high temperature, high pressure, huge centrifugal force, steam force, steam excitation force, corrosion and vibration, and wet steam area water drop erosion under extremely harsh conditions. The aerodynamic performance, processing geometry, surface roughness, installation gap, running condition and fouling of the blade all affect the efficiency and output of the steam turbine, and the structural design, vibration strength and running mode of the blade have a decisive influence on the safety and reliability of the unit.

[0003] In the prior art, when the steam turbine moving blade is installed, the staff lifts the moving blade and inserts it into the installation slot on the main shaft. For some moving blades with large volume and heavy weight, the staff needs to hold the moving blade to align the installation slot on the main shaft. During the alignment process, the staff has a large labor intensity, the installation efficiency is low, and there is a great safety hazard.

[0004] Therefore, in order to reduce the labor intensity of the staff and improve the installation efficiency, it is urgent to develop a loading device which can assist the staff to install the moving blade. CONTENT OF THE INVENTION

[0005] The application aims to provide a loading device for steam turbine moving blade installation to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the application provides a loading device for steam turbine moving blade installation, which adopts the following technical scheme:

[0007] A loading device for steam turbine moving blade installation, comprising a movable base, a lifting platform and a loading mechanism, the lifting platform is installed on the movable base, the loading mechanism is installed on the lifting platform, the loading mechanism comprises symmetrically arranged support plates, the top end of the support plate is fixed with a support block, the side part of the support block is provided with a notch, a limiting groove is formed between the two notches, a baffle is rotatably connected to the two sides of the support block on one side, a clamping groove is arranged on the two sides of the support block on the other side, and the baffle can be clamped in the clamping groove.

[0008] Preferably, the surfaces of the notches are uniformly provided with a plurality of balls.

[0009] By adopting the above technical scheme, the balls are arranged, the rolling friction between the moving blade and the balls is used, the friction of the rolling friction is small, and the staff only needs to apply a small pushing force to push the moving blade.

[0010] Preferably, in order to improve the installation efficiency, the movable base is arranged to move along the vertical direction of the main shaft of the steam turbine.

[0011] Preferably, the workbench surface of the lifting platform is fixed with a sliding rail, the bottom end of the support plate is slidingly connected to the sliding rail, a plurality of adjusting holes are provided through the sliding rail, and the support plate and the sliding rail are fixed by studs.

[0012] By adopting the above technical scheme, the support plate is slidingly connected to the sliding rail, the distance between the two support plates can be adjusted, so that the installation and use of the dynamic blade of different sizes can be adapted.

[0013] Preferably, a protective cover is further arranged beside the lifting platform, and the protective cover is fixed to the movable base.

[0014] By adopting the above technical scheme, when the blade tilts and slides down in danger during installation, the protective cover can block it to avoid hitting the staff.

[0015] Preferably, in order to facilitate the pushing of the movable base, a handle frame is further installed on the movable base.

[0016] To sum up, the present application has at least one of the following beneficial technical effects: the steam turbine dynamic blade installation loading device is provided with a movable base, a lifting platform and a loading mechanism, the movable base is arranged to move along the vertical direction of the main shaft of the steam turbine, the dynamic blade is positioned and clamped in the loading mechanism, during installation, the lifting platform only needs to lift the dynamic blade to a suitable installation position, and the subsequent staff only needs to push the dynamic blade into the main shaft installation groove from one side, which greatly reduces the labor intensity of the staff and improves the installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the embodiment of the present application in the state of loading dynamic blades.

[0018] Figure 2 is a structural schematic diagram of the embodiment of the present application in the state of opening the baffle during the auxiliary assembly process.

[0019] Reference signs: 1, movable base; 11, handle frame; 2, lifting platform; 21, sliding rail; 3, loading mechanism; 31, support plate; 311, support block; 32, baffle; 33, clamping groove; 34, ball; 4, protective cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings Figures 1-2 The present application will be further described in detail.

[0021] The embodiment of the application discloses a loading device for installing turbine moving blades Figures 1-2 , comprising a movable base 1, a lifting platform 2 and a loading mechanism 3, the movable base 1 is arranged to move along the vertical direction of the main shaft of the turbine, a handle frame 11 is further installed on the movable base 1, the lifting platform 2 is installed on the movable base 1, the loading mechanism 3 is installed on the lifting platform 2, the loading mechanism 3 comprises symmetrically arranged support plates 31, support blocks 311 are fixed at the top ends of the support plates 31, notches are formed in the side portions of the support blocks 311, a limiting groove is formed between the two notches, a baffle 32 is rotatably connected to the two sides of each support block 311, respectively, clamping grooves 33 are arranged on the two sides of the other support block 311, the baffle 32 can be clamped in the clamping groove 33, by arranging the baffle 32, the two ends of the moving blade can be limited during movement and lifting, so that the moving blade cannot slide down, the operation safety is improved, and the moving blade cannot be damaged.

[0022] Refer to Figure 2 , the surfaces of the notches are uniformly provided with a plurality of balls 34.

[0023] By arranging the balls 34, the rolling friction between the moving blade and the balls 34 is utilized, the friction of the rolling friction is small, and the staff only needs to apply a small pushing force to push the moving blade.

[0024] Refer to Figure 1 , the working table surface of the lifting platform 2 is fixed with sliding rails 21, the bottom ends of the support plates 31 are slidingly connected to the sliding rails 21, a plurality of adjusting holes are formed in the sliding rails 21, and the support plates 31 and the sliding rails 21 are fixed through studs.

[0025] The support plates 31 are slidingly connected to the sliding rails 21, the distance between the two support plates 31 can be adjusted, so that the installation of moving blades of different sizes can be adapted.

[0026] Refer to Figure 2 , a protective cover 4 is further arranged beside the lifting platform 2, and the protective cover 4 is fixed to the movable base 1.

[0027] By arranging the protective cover 4, when the moving blade is in danger of tilting and sliding down during installation, the protective cover 4 can block the moving blade, so that the moving blade cannot hit the staff.

[0028] The implementation principle of the loading device for installing turbine moving blades is as follows:

[0029] In use, the staff first places the moving blade in the limiting groove on the top of the two side support plates 31, and clamps the two side baffles 32 into the clamping grooves 33, then lifts the moving blade through the lifting platform 2 until it moves to the installation groove of the main shaft, then opens the two side baffles 32, and the staff only needs to push the moving blade into the installation groove of the main shaft from one side (when there is a height error, the staff only needs to slightly lift the moving blade upward), which greatly reduces the labor intensity of the staff and improves the installation efficiency.

[0030] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A loading device for mounting a turbine blade, characterized by: Including movable base (1), lifting platform (2) and loading mechanism (3), the lifting platform (2) is installed on the movable base (1), the loading mechanism (3) is installed on the lifting platform (2), the loading mechanism (3) includes symmetrically arranged support plate (31), the support plate (31) top end is fixed with support block (311), the support block (311) side is provided with a gap, and the limiting groove is formed between the two gaps, the support block (311) is respectively rotatably connected with the baffle (32) on both sides, and the both sides of the support block (311) on the other side are respectively provided with the clamping groove (33), the baffle (32) can be clamped in the clamping groove (33).

2. The loading device for a turbine blade mounting according to claim 1, characterized by: The surface of the gap is uniformly provided with a plurality of balls (34).

3. The loading device for a turbine blade mounting according to claim 1, characterized by: The movable base (1) is arranged along the vertical direction of the steam turbine main shaft.

4. The loading device for a turbine blade mounting according to claim 1, characterized by: The workbench surface of the lifting platform (2) is fixed with a slide rail (21), the bottom end of the support plate (31) is slidably connected on the slide rail (21), a plurality of adjusting holes are provided on the slide rail (21), and the support plate (31) and the slide rail (21) are fixed by stud.

5. The loading device for a turbine blade mounting according to claim 1, characterized by: The lifting platform (2) is also provided with a protective cover (4), and the protective cover (4) is fixed on the movable base (1).

6. The loading device for a turbine blade mounting according to claim 1, characterized by: The movable base (1) is also provided with a handle frame (11).

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