Rotor bracket

Abstract

The utility model discloses a rotor bracket, which relates to the field of steam turbine generators and comprises a bottom support frame, a box body bottom plate and a box body. The box body bottom plate is installed on the upper portion of the bottom supporting frame, the box body is installed on the box body bottom plate, a carrier roller shaft is arranged in the box body, a carrier roller is arranged on the carrier roller shaft, and the axis of the carrier roller is parallel to the axis of a rotor; the carrier roller assembly is installed on the box body, the axis of the rotor is parallel to the axis of the carrier roller, the contact rate of the carrier roller and the rotor is increased, and the rotor can rotate more easily.

Description

Technical Field

[0001] The utility model relates to the field of steam turbine generators, and particularly to a rotor bracket. Background Technique

[0002] A steam turbine generator is a device that uses a steam turbine to drive a generator to generate electricity. Its working principle is that high-temperature and high-pressure steam is generated by a boiler, and these steams are sprayed into the blades of the steam turbine at high speed through nozzles. Due to the high temperature and high pressure of the steam, the blades start to rotate under the action of a strong impact force. The rotation of the blades drives the steam turbine rotor connected thereto to rotate together, and the rotation of the steam turbine rotor further drives the rotor of the generator to rotate. When the rotor of the generator rotates, the coil cuts the magnetic force line, thereby converting mechanical energy into electrical energy.

[0003] The steam turbine generator rotor is a key component in a steam turbine generator. The steam turbine generator rotor is widely used in various types of power generation facilities such as thermal power plants, nuclear power plants, and geothermal power plants. As the core component of the entire generator system, the performance of the rotor directly affects the efficiency and reliability of the entire system. Its main function is to convert the mechanical energy of the steam turbine into electrical energy; during long-term operation, the rotor will be affected by various mechanical stresses and thermal stresses, and problems such as wear, deformation, and cracks may occur. Therefore, regular inspections and repairs are essential.

[0004] When problems such as wear, deformation, and cracks occur in the steam turbine generator rotor, a bracket is needed for its maintenance. Most of the existing rotor brackets use a transportation bracket or a simple bracket for support. Since the transportation bracket or the simple bracket cannot rotate the rotor, it is not convenient for maintenance, reducing the work efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide an elevator shaft door protection device because most of the existing rotor brackets use a transportation bracket or a simple bracket for maintenance. Since the transportation bracket or the simple bracket cannot rotate the rotor, it is not convenient for maintenance, reducing the work efficiency.

[0006] To achieve the above object, the utility model provides the following technical solution: a rotor bracket, including a bottom support frame, a box body bottom plate, and a box body; the box body bottom plate is installed on the upper part of the bottom support frame, the box body is installed on the box body bottom plate, a roller shaft is arranged in the box body, rollers are arranged on the roller shaft, and the axis line of the rollers is parallel to the axis line of the rotor.

[0007] Preferably, the bottom support frame includes two transverse support plates and three vertical support plates; the two transverse support plates and the three vertical support plates are inserted and spliced with grooves to form a "well"-shaped frame.

[0008] Preferably, it further includes reinforcing ribs, and the reinforcing ribs are respectively connected to the horizontal support plate and the vertical support plate.

[0009] Preferably, it further includes a bracket bottom plate, and the bracket bottom plate is installed at the bottom of the bottom support frame.

[0010] Preferably, the reinforcing ribs are located at the vertical center position of the bottom support frame and are parallel to the bracket bottom plate.

[0011] Preferably, the bracket bottom plate is welded to the bottom support frame.

[0012] Preferably, the box body is welded to the box body bottom plate.

[0013] Preferably, the material of the idler is H brass.

[0014] Preferably, it further includes a positioning pressure plate, and the positioning pressure plate is installed in the pin hole of the idler and fixes the idler shaft.

[0015] Preferably, the positioning pressure plate is fixed to the idler through a pressure plate screw.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: An idler assembly is installed on the box body, the axis of the rotor and the axis of the idler are kept parallel, the contact rate between the idler and the rotor is increased, and it has a centering function, the operation is simple, and the rotor is easier to rotate.

[0017] The rotor bracket is composed of split welding, with strong load-bearing capacity and stability, and the structure is more compact. The bracket adopts a multi-piece steel plate grooved insertion welding, effectively preventing the steel plate from being deformed and bent during the welding process.

[0018] The surface of the idler is processed with H68 brass which is softer than the rotor, better protecting the journal of the rotor from damage. Brief Description of the Drawings

[0019] Figure 1 It is a structural diagram of the rotor bracket of the present utility model.

[0020] Figure 2 It is a left view of the rotor bracket of the present utility model.

[0021] In the figure: 1 - box body, 2 - idler, 3 - idler shaft, 4 - box body bottom plate, 5 - horizontal support plate, 6 - vertical support plate, 7 - reinforcing rib, 8 - bracket bottom plate, 9 - positioning pressure plate, 10 - pressure plate screw. Detailed Description of the Preferred Embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] As Figure 1 shown, the rotor bracket of the present utility model includes a bottom support frame, a box body bottom plate 4, and a box body 1; the box body bottom plate 4 is installed on the upper part of the bottom support frame, the box body 1 is installed on the box body bottom plate 4, a roller shaft 3 is arranged in the box body 1, and a roller 2 is arranged on the roller shaft 3; wherein, a bracket bottom plate 8 is welded to the bottom support frame, and the bottom support frame includes two transverse support plates 5 and three vertical support plates 6. The two transverse support plates 5 and the three vertical support plates 6 are inserted and spliced with grooves to form a frame similar to a "well", which can better bear the weight of the rotor.

[0024] Specifically, on the bracket bottom plate 8, mark the center lines of the two transverse support plates 5 and the three vertical support plates 6. Divide the two transverse support plates 5 into four parts according to the length dimension of the box body bottom plate 4, measure the thickness of the support plates, and perform cutting. The cutting height is half of the height of the transverse support plate.

[0025] Divide the three vertical support plates 6 into three parts according to the width dimension of the box body bottom plate 4, perform cutting, and the cutting height is half of the height of the vertical support plate 6. Perform insertion splicing and welding. Then weld the above-mentioned reinforcing rib 7 at the vertical center position of the bracket.

[0026] Place the above-mentioned box body bottom plate 4 on the bottom support frame and align and level it; process two symmetrical pin holes on the same straight line at 1 / 4 height of the vertical plane of the first transverse support plate and the second transverse support plate symmetrical to the box body 1 according to the diameter of the journal.

[0027] Place the above-mentioned roller 2 into the box body 1 and put on the roller shaft 3. To prevent the roller shaft 3 from moving in the pin hole, positioning pressure plates 9 are provided at both ends of the pin hole, and both ends of the positioning pressure plates 9 are fastened with screws 10 respectively.

[0028] According to the design provided by the present utility model, the rotor bracket is composed of split welding, with strong load-bearing capacity and stability, and a more compact structure. The bracket uses multiple steel plates with slotted insertion welding, effectively preventing the steel plates from being deformed and bent by heat during the welding process. The idler assembly is installed on the box body, and the axis of the rotor is kept parallel to the axis of the idler, improving the contact rate between the idler and the rotor, and having an automatic centering function, which is simple to operate and makes the rotor easier to rotate; the surface of the idler is processed with H68 brass that is softer than the rotor, better protecting the journal of the rotor from damage.

[0029] The manufacturing materials of the rotor bracket of the present utility model are simple and easy to obtain at the construction site, with low cost, and have very good practical value.

[0030] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A rotor bracket, characterized in that: The invention comprises a bottom support frame, a box bottom plate (4) and a box (1); the box bottom plate (4) is mounted on the upper part of the bottom support frame, the box (1) is mounted on the box bottom plate (4), a roller shaft (3) is arranged in the box (1), a roller (2) is arranged on the roller shaft (3), and the axis center line of the roller (2) is parallel to the axis center line of the rotor.

2. The rotor bracket according to claim 1, characterized in that: The bottom support frame comprises two transverse support plates (5) and three vertical support plates (6); the two transverse support plates (5) and the three vertical support plates (6) are slotted, inserted into each other and spliced ​​to form a "well"-shaped frame.

3. The rotor bracket according to claim 2, characterized in that: It also includes reinforcing ribs (7), which are respectively connected to the transverse support plate (5) and the vertical support plate (6).

4. The rotor bracket according to claim 3, characterized in that: It also comprises a bracket bottom plate (8), wherein the bracket bottom plate (8) is mounted on the bottom of the bottom support frame.

5. The rotor bracket according to claim 4, characterized in that: The reinforcing rib (7) is located at the vertical center of the bottom support frame and is parallel to the bracket bottom plate (8).

6. The rotor bracket according to claim 4, characterized in that: The bracket bottom plate (8) is connected to the bottom support frame by welding.

7. The rotor bracket according to claim 1, characterized in that: The box body (1) is connected to the box body bottom plate (4) by welding.

8. The rotor bracket according to claim 1, characterized in that: The material of the roller (2) is H (68) brass.

9. The rotor bracket according to claim 1, characterized in that: It also includes a positioning pressure plate (9), which is installed in the pin hole of the roller (2) and fixes the roller shaft (3).

10. The rotor bracket according to claim 9, characterized in that: The positioning pressure plate (9) is fixed to the support roller (2) via a pressure plate screw (10).

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