Simple power tool for the end of the generator rotor

Abstract

The utility model discloses a simple power-aiding tool for generator rotor steam end, including the main part, the main part one end is provided with the first reinforcing plate, and the other end is provided with the second reinforcing plate, be provided with a plurality of through -holes on the first reinforcing plate. Simple power-aiding tool for generator rotor steam end of the utility model, convenient operation, use rotor steam end power-aiding tool, reduced rotor steam end and stator bore frictional collision, guaranteed rotor steam end, excitation end translation direction consistent, avoid steam end to appear unstable and lead to with excitation end not on the same axis situation, improved the efficiency of wearing rotor, save time, save the effort, improve the security.

Description

Technical Field

[0001] This utility model relates to the field of generator rotor installation technology, specifically to a simple auxiliary tool for the steam end of a generator rotor. Background Technology

[0002] A steam turbine generator, also known as a steam turbine engine, is a large mechanical device composed of multiple sets of mechanical parts, including a steam turbine rotor. The steam turbine rotor is an assembly of rotating steam turbine components such as the main shaft, impeller or drum, moving blades, and coupling, and is one of the essential components of a steam turbine.

[0003] The rotor needs to be installed inside the stator. This is typically done by hoisting equipment. Traditional hoisting methods are inefficient, and the rotor's steam end rubs and collides with the stator cavity during installation, leading to significant losses at the steam end and potentially affecting the turbine generator's lifespan. Utility Model Content

[0004] This utility model aims to solve some problems existing in the prior art. Therefore, one objective of this utility model is to provide a simple auxiliary tool for the steam end of a generator rotor, which can improve the efficiency of rotor insertion, save time and effort, and improve safety.

[0005] To achieve the above objectives, this utility model proposes: A simple power assist tool for the steam end of a generator rotor includes a main body, with a first reinforcing plate at one end and a second reinforcing plate at the other end. The first reinforcing plate has several through holes.

[0006] Preferably, the diameters of both the first reinforcing plate and the second reinforcing plate are larger than the diameter of the main body.

[0007] Preferably, a gasket is provided on the outside of the first reinforcing plate, and the gasket has several through holes.

[0008] Preferably, a plurality of equally spaced reinforcing ribs are provided between the main body and the first reinforcing plate, with one side of the reinforcing rib connected to the outer wall of the main body and the other side connected to the inner surface of the first reinforcing plate.

[0009] Preferably, a weight-adding component is provided on the outside of the second reinforcing plate.

[0010] Preferably, the weight-adding component is one of the following: cross-shaped, circular, or straight.

[0011] The beneficial effects of this utility model are: This utility model provides a simple auxiliary tool for the generator rotor steam end. It is easy to operate and reduces friction and collision between the rotor steam end and the stator bore. It ensures that the translation direction of the rotor steam end and excitation end is consistent, avoiding instability at the steam end that could lead to misalignment with the excitation end. This improves the efficiency of rotor insertion, saves time and effort, and enhances safety.

[0012] The features and advantages of this utility model will be described in detail through embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a perspective view of the utility model; Figure 2 This is a schematic diagram of the utility model in use.

[0014] In the diagram: 1. Main body, 2. First reinforcing plate, 21. Through hole, 3. Second reinforcing plate, 4. Gasket, 5. Reinforcing rib, 6. Weighting component, 7. Lifting strap, 8. Rotor, 9. Stator. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0017] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The words “a” or “one” and similar terms used in this application specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. “A plurality” includes two, equivalent to at least two. The words “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0018] Please refer to the following for details. Figure 1 The generator rotor steam end simple assist tool includes a main body 1, which is made of a hollow carbon steel tube with a length of about 900mm. A first reinforcing plate 2 with a thickness of about 30mm is welded and fixed to one end of the main body 1. The first reinforcing plate 2 is adapted to the steam end of the rotor 8. A second reinforcing plate 3 with a thickness of about 30mm is welded and fixed to the other end. The first reinforcing plate 2 is provided with several through holes 21. These through holes 21 are used to cooperate with the connecting holes on the steam end of the rotor 8 for installing fasteners, so that the generator rotor 8 steam end simple assist tool is fixed together with the rotor 8, which is convenient for simultaneous hoisting and installation.

[0019] Furthermore, the diameters of the first reinforcing plate 2 and the second reinforcing plate 3 are both larger than the diameter of the main body 1, which can lock and restrict the sling 7 to prevent the sling 7 from sliding out from both ends of the simple power-assisted tool at the steam end of the generator rotor 8.

[0020] Furthermore, a gasket 4 is provided on the outside of the first reinforcing plate 2. The gasket 4 has several through holes 21. The gasket 4 is located between the first reinforcing plate 2 and the steam end of the rotor 8 to prevent wear on the rotor 8.

[0021] Furthermore, four equally spaced reinforcing ribs 5 are provided between the main body 1 and the first reinforcing plate 2. One side of the reinforcing rib 5 is connected to the outer wall of the main body 1, and the other side is connected to the inner surface of the first reinforcing plate 2. The reinforcing ribs 5 strengthen the connection between the main body 1 and the first reinforcing plate 2.

[0022] To prevent the generator rotor steam end simple assist tool from being too light, a weight-adding component 6 can be welded and fixed on the outside of the second reinforcing plate 3. At the same time, steel plates can also be welded inside the main body 1, and the first reinforcing plate 2 and the second reinforcing plate 3 also play a role in adding weight.

[0023] Furthermore, the weight-adding component 6 can be one of a cross shape, a circle, or a straight line shape; in this embodiment, a cross shape is used.

[0024] This utility model is a simple auxiliary tool for the steam end of a generator rotor. Its working principle is described in the attached instruction manual. Figure 2 illustrate: Place the shim 4 between the first reinforcing plate 2 and the steam end of the rotor 8, and fix the power-assist tool to the steam end of the rotor 8 with fasteners. Inside the stator 9, lay a layer of special polytetrafluoroethylene plate as a sliding plate, keeping it vertically aligned with the generator axis. Fix the tension wire rope and sling 7 at the middle position of the rotor 8, with the sling 7 on the same horizontal axis. After fixing the hand-operated hoist on both sides of the excitation end (the end opposite the steam end) bearing seat of the rotor 8, ensure that the excitation end is supported and slides using the bearing seat, and the rotor 8 begins to enter the stator 9. After the assist tool passes through the other end of the stator 9, fix the sling 7 to the assist tool, adjust the position of the other sling 7, and slowly use a crane to slightly lift the rotor 8 until the exciter bearing seat is suspended. Relying on the traction of the exciter hand hoist and the assist tool, move the rotor 8 towards the steam end. During the movement, maintain sufficient clearance between the stator 9 and the rotor 8, and observe the clearance between the stator 9 and the rotor 8 at all times. Finally, the entire rotor 8 slowly moves to the end point of the generator end cover. After clearance measurement and level adjustment, it accurately reaches the predetermined position. After the rotor 8 is in place, remove the PTFE plate, loosen the sling 7, remove the rotor 8 assist tool, and complete the installation of the rotor 8.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A simple power-assisted tool for the steam end of a generator rotor, characterized in that, The device includes a main body, one end of which is provided with a first reinforcing plate and the other end with a second reinforcing plate. The first reinforcing plate is provided with several through holes.

2. The simple auxiliary tool for the steam end of the generator rotor according to claim 1, characterized in that, The diameters of both the first and second reinforcing plates are larger than the diameter of the main body.

3. The simple auxiliary tool for the steam end of the generator rotor according to claim 1, characterized in that, A gasket is provided on the outside of the first reinforcing plate, and the gasket has several through holes.

4. The simple auxiliary tool for the steam end of the generator rotor according to claim 2, characterized in that, A number of equally spaced reinforcing ribs are provided between the main body and the first reinforcing plate. One side of each reinforcing rib is connected to the outer wall of the main body, and the other side is connected to the inner surface of the first reinforcing plate.

5. The simple auxiliary tool for the steam end of the generator rotor according to claim 1, characterized in that, The second reinforcing plate has weight-adding components on its outside.

6. The simple auxiliary tool for the steam end of the generator rotor according to claim 5, characterized in that, The weight-adding component is one of the following shapes: cross-shaped, circular, or straight.

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