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Energy consumption damping device for large-scale generator

A vibration damping device and generator technology, which is applied to electromechanical devices, electrical components, electric components, etc., can solve the problems of affecting the stability of the shaft system, large vibration of the base, affecting the bearing, etc., achieving a simple and reliable structure, reducing vertical Directional vibration, the effect of reducing horizontal vibration

Inactive Publication Date: 2017-06-30
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large vibration of the base will cause great harm to the unit itself and the foundation, especially for units supported by end cover bearings, the vibration of the base will also affect the bearings, thereby affecting the stability of the shafting system

Method used

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  • Energy consumption damping device for large-scale generator
  • Energy consumption damping device for large-scale generator
  • Energy consumption damping device for large-scale generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of energy consumption damping device for large generator of the present invention such as figure 1 , figure 2 with image 3 As shown, the device is set on the generator stator frame. The specific structure is as follows: an energy-dissipating vibration-damping device for a large-scale generator is mainly composed of four parts: a vibration-damping box 2, a spring 3, a mass box 4, and a counterweight 5.

[0026] The damping box 2 and the mass box 4 are respectively assembled with several steel plates, and the steel plates should have high strength to prevent compression deformation. The damping box 2 chooses a wedge-shaped structure, and the bottom surface of the wedge-shaped body is an arched surface. The curvature of the arched surface should be consistent with the curvature of the generator stator frame 1, so that the vibration-damping box 2 can be better connected with the generator stator frame. connect. The mass box 4 is suspended inside the vibration-d...

Embodiment 2

[0029] The difference from Embodiment 1 is that the counterweight 5 uses steel balls, and the steel balls act as damping media, and the mutual impact of the steel balls is used to achieve the purpose of energy consumption.

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PUM

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Abstract

The invention discloses an energy consumption vibration damping device for a large generator, which belongs to the technical field of vibration damping of steam turbine generator sets. The energy consumption damping device comprises a combination of several damping boxes (2) arranged on the generator stator frame (1), and the vibration damping box (2) is arranged on the generator stator frame (1) upper part. The key point of the design is to design the mass of the counterweight in the mass box according to the vibration frequency of the generator stator frame, so that the natural frequency of the mass box in the vibration-absorbing box in the vertical and horizontal directions is equal to the vibration frequency of the generator stator frame. The invention can effectively reduce the vibration of the stator frame of the generator. The device has simple structure and convenient operation, and can meet the needs of industrial production.

Description

technical field [0001] The invention relates to an energy consumption vibration reduction device technology for a large-scale generator, and belongs to the technical field of vibration reduction of large-scale steam turbine generator sets. Background technique [0002] The steam turbine generator set is the core equipment of a thermal power plant, mainly composed of a stator and a rotor. According to statistics, 70% of the major accidents of turbogenerators are due to mechanical reasons, and as long as they are related to vibration problems, vibration problems are a type of failure that often occurs in units and is relatively difficult to deal with. In the past, the vibration analysis of the turbogenerator was mainly focused on the rotor, but the stator system of the turbogenerator is one of the key components of the generator, and the vibration failure of the stator system of the turbogenerator also involves the safety and stability of the power station production and econ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/24
CPCH02K5/24
Inventor 杨建刚吴亚军
Owner SOUTHEAST UNIV
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