KR200484602Y1

KR200484602Y1 - Generator rotor support device

Info

Publication number: KR200484602Y1
Application number: KR2020150007569U
Authority: KR
Inventors: 고권우; 김태춘; 김선호; 문택웅
Original assignee: 한국남부발전 주식회사
Priority date: 2015-11-20
Filing date: 2015-11-20
Publication date: 2017-09-27
Also published as: KR20170001882U

Abstract

A generator rotor support apparatus is disclosed. Wherein the generator rotor support device is coupled to the casing of the generator to support a rotor of the generator and is coupled to the casing and is semicircular or arcuate and has a plurality of first bolt holes A flange portion formed on the flange portion; A flange coupling bolt inserted into the first bolt hole to couple the flange portion to the casing; A plurality of second bolts projecting in a semicircular or arcuate shape from one surface of the flange portion perpendicularly to one surface of the flange portion and extending perpendicularly to the projecting direction and arranged at regular intervals along the semi- A rotor support portion including a hole; And a rotor support bolt coupled to the second bolt hole from an outer surface of the rotor support portion.

Description

{GENERATOR ROTOR SUPPORT DEVICE}

The present invention relates to a generator rotor supporting device, and more particularly, to a generator rotor supporting device capable of stably supporting a rotor of a generator without using a heavy equipment or the like.

Generator is a very important component among power generation facilities such as thermal power plant, hydro power plant, and nuclear power plant. A generator is a device that converts mechanical rotational energy into electric energy, such as a DC generator, a synchronous generator, and an induction generator. Generators usually consist of a stator, rotor, bearing and exciter, the rotor is the rotating part of the generator, and the stationary part is the stator.

Plan for Periodic Internal Inspection and Maintenance of Large Generator Generators Maintenance work is carried out on generator rotors and bearings coupled to generator rotors in repair work due to sudden failure of generator or generator.

In order to disassemble and maintain the generator, the bearings supporting the bearings and bearings are separated from the rotor. To do this, the rotor of the generator is lifted using a crane and a wire rope to separate the bearings and bearings. .

In this conventional maintenance process, the rotor of the generator is required to support the rotor through the crane and the wire rope, which makes it difficult to secure safety. During the decompression maintenance of the generator, the crane and the wire rope are continuously used to support the rotor There is a problem that the use of the crane is limited.

In order to solve such a problem, the inventor of the present invention has introduced the following structure to prevent a safety accident caused by the use of a crane and a wire rope, and to safely perform maintenance work on a generator without using a heavy equipment such as a crane And to develop a generator rotor support device capable of supporting the generator rotor.

The present invention relates to an apparatus coupled to a casing of a generator for supporting a rotor of a generator, the apparatus being coupled to the casing and having a semicircular or arcuate shape and having a plurality of first bolt holes formed along the semi- chapter; A flange coupling bolt inserted into the first bolt hole to couple the flange portion to the casing; A plurality of second bolts projecting in a semicircular or arcuate shape from one surface of the flange portion perpendicularly to one surface of the flange portion and extending perpendicularly to the projecting direction and arranged at regular intervals along the semi- A rotor support portion including a hole; And a rotor support bolt coupled to the second bolt hole from the outer surface of the rotor support portion.

In addition, the generator rotor support device may further include a reinforcing rib formed on an outer surface of the flange portion and the rotor support portion.

1 is a view showing a configuration of a generator rotor supporting device according to an embodiment of the present invention.
FIG. 2 is a view showing a state where the generator rotor supporting device shown in FIG. 1 supports the rotor.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a generator rotor supporting apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the appended claims are not intended to limit the invention to the particular forms disclosed, but to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged from the actual size in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 is a view showing a configuration of a generator rotor supporting device according to an embodiment of the present invention.

Referring to FIG. 1, a generator rotor support apparatus according to an embodiment of the present invention includes a flange portion 110, a flange coupling bolt 120, a rotor support portion 130, and a rotor support bolt 140 .

The flange portion 110 is a portion coupled to a generator, for example, a casing of a turbine generator. The flange portion 110 may be semicircular or arc-shaped. For example, it may be arc-shaped. In this case, the curvature of the arc shape may be a curvature corresponding to the periphery of the generator casing. The flange portion 110 is in the form of a plate having a predetermined width, and the first bolt hole 111 is formed along the arc shape. The number of the first bolt holes 111 is not particularly limited, and may be, for example, a number corresponding to a part of the bolt holes formed in the generator casing.

The flange coupling bolt 120 is a bolt for coupling the flange portion 110 to the casing. To this end, the flange coupling bolt 120 may be coupled to the first bolt hole 111 formed in the flange portion 110.

The rotor support portion 130 is a portion for supporting the rotor of the generator. The rotor support part 130 may protrude in a semicircular shape or arc shape from one surface of the flange part 110 so as to be perpendicular to one surface of the flange part 110. For example, it can be projected in an arc shape. In this case, the curvature of the arc shape may be greater than the diameter of the rotor of the generator, which may encompass the rotor of the generator. The rotor support part 130 includes two or more second bolt holes 141 protruding from the flange part 110 by a predetermined length and arranged at regular intervals along the arc shape. For example, the number of the second bolt holes 141 may be two.

The rotor support bolt 140 is coupled to the second bolt hole 141 from the outer surface of the rotor support portion 130. The rotor support bolt 140 is screwed to the second bolt hole 141 and an end portion of the rotor support bolt 140 is supported by the outer surface of the rotor of the generator 130 surrounding the rotor support portion 130 to support the generator rotor. The rotor support bolt 140 is tightened to the second bolt hole 141, that is, the degree of protrusion of the rotor support bolt 140 toward the inner side of the rotor support portion 130 is adjusted so that the rotor of the generator is rotated from the inner surface of the rotor support portion 130 You can control the distance of separation.

The generator rotor support device according to one embodiment of the present invention is coupled to the casing of the generator during the decommissioning maintenance of the generator to support the generator rotor. Hereinafter, the decompression maintenance process of the generator will be described using the generator rotor support device of the present invention.

When disassembling and repairing the generator, separate and repair the generator rotor, ie, the bearing attached to the rotor and the bearing bearing supporting the bearing.

To separate the bearings and the bearing base, first connect the wire rope attached to the crane to the rotor to lift the rotor upward.

The generator rotor support device of the present invention is coupled to the casing of the generator with the rotor in an elevated state. At this time, the flange portion 110 is coupled and fixed around the front end of the casing 10 using the flange coupling bolts 120 so that the rotor support portion 130 is positioned below the rotor, The portion 130 is located under the rotor 20. Then, the rotor support bolt 140 is engaged with the second bolt hole 141 of the rotor support portion 130.

When the rotor support bolt 140 is coupled to the rotor support portion 130, the pro rotor is lowered toward the rotor support portion 130 by the crane and the wire, and then the wire rope is separated from the rotor. Since the diameter of the rotor support portion 130 is larger than the diameter of the rotor 130, a gap is formed between the rotor and the inner surface of the rotor support portion 130. When the rotor support bolt 140 is inserted into the rotor 20 ).

The rotor support bolt 140 is further tightened to the second bolt hole 141 so that the second bolt hole 141 is rotatably supported by the rotor bolt 140 so that a sufficient space for separating the bearing can be secured with the rotor support bolt 140 supporting the rotor. .

In this way, the generator rotor support device of the present invention supports the rotor while separating the bearings and the bearing support from the rotor.

When the generator rotor supporting device according to one embodiment of the present invention is used, it is possible to separate and maintain the bearing and the bearing bearing after supporting the rotor without using a crane or a wire rope, It is possible to prevent safety accidents caused by the use of the rope, and to perform the maintenance work safely without using heavy equipment such as a crane.

In addition, since the rotor can be supported without the crane and wire rope for a period of time during which the bearing and bearing support are separated and maintained, there is an advantage that the crane can be used in other processes.

The generator rotor support device according to the present invention may further include a reinforcing rib 150 formed on an outer surface of the flange portion 110 and the rotor support portion 130. In this case, the strength of the flange portion 110 and the rotor support portion 130 can be reinforced, whereby the rotor support portion 130 can more stably support the generator rotor.

The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention should not be construed as limited to the embodiments set forth herein but is to be accorded the widest scope consistent with the principles and novel features set forth herein.

Claims

An apparatus coupled to a casing of a generator for supporting a rotor of the generator,
A flange coupled to the casing and having a semicircular or arcuate shape and having a plurality of first bolt holes formed along the semicircular or arcuate shape;
A flange coupling bolt inserted into the first bolt hole to couple the flange portion to the casing;
A plurality of second bolts projecting in a semicircular or arcuate shape from one surface of the flange portion perpendicularly to one surface of the flange portion and extending perpendicularly to the projecting direction and arranged at regular intervals along the semi- A rotor support portion including a hole;
A rotor bearing bolt coupled to the second bolt hole from an outer surface of the rotor bearing portion; And
And a reinforcing rib formed on an outer surface of the flange portion and the rotor receiving portion.
Generator rotor support device.

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