Guide bearing supporting structure of vertical hydroelectric unit

Abstract

The invention discloses a guide bearing supporting structure of a vertical hydroelectric unit. The guide bearing supporting structure comprises rack bodies, guide bearing pads, cylindrical pins, limiting blocks and a lower guide bearing pad support plate, wherein an arc surface is arranged on each of the guide bearing pads; the arc surfaces of the guide bearing pads are mounted in a manner of being tightly clung to a guide bearing; the guide bearing pads are uniformly distributed around the center of the guide bearing; two blind holes are formed in each of the guide bearing pads; the guide bearing is used for allowing the rotating shaft of the vertical hydroelectric unit to be mounted; each of the guide bearing pads is provided with two cylindrical pins correspondingly, and one ends of thetwo cylindrical pins are inserted into the two blind holes of the corresponding guide bearing pad; the limiting blocks are fixed with the rack bodies separately; an arc cavity and a limiting step which are symmetrical are arranged on the two surfaces of each of the limiting blocks separately; the extending ends of each pair of cylindrical pins are clamped in the corresponding two arc cavities; agap is reserved between each of the end faces of each pair of cylindrical pins and the corresponding limiting step; each of the limiting blocks can limit the corresponding guide bearing pad in the tangent and radial directions through the corresponding cylindrical pins; and the lower guide bearing pad support plate is fixed with the rack bodies or the limiting blocks and tightly clung to the bottom surfaces of the guide bearing pads.

Description

technical field [0001] The invention relates to a guide bearing supporting structure of a vertical water turbine generator set, belonging to the technical field of fluid machinery and energy engineering equipment. Background technique [0002] The vertical hydro-generator set is a prime mover that converts water energy into mechanical energy. The generator is driven by water energy to convert the mechanical energy of rotation into electrical energy. The working condition of the turbine depends on the working head and flow of the hydropower plant. Due to the large variation range of water head and flow, relatively simple structure, large capacity and speed range, etc., this type of model is most widely used in the field of hydropower generation. Between the rotating parts of the vertical unit, three guide bearing support structures, the upper guide bearing, the lower guide bearing and the water guide bearing, are generally used to ensure the stability of the shaft system ...

AI Technical Summary

Problems solved by technology

Therefore, the support structure of the traditional guide bush is complicated, the manufacturing is difficult and the cost is high, and it needs to be pre-installed and debugged in the factory before being installed and debugged on site, and the installation and commissioning cycle is very long.

[0004] In addition, due to the large number of guide bearing pads of vertical hydro-generators, the total number of guide bearing pads from the unit to the general unit is between 24 and 36. The conventional guide bearing support structure is too complicated and difficult to manufacture, although the performance can meet the shafting design of the unit. , unit vibration and unit swing requirements

However, due to the unreasonable design of the supporting structure, there are situations where the rigidity is too strong or the rigidity is weak. At the same time, the number of supporting structures is extremely large, which increases the construction cost and maintenance cost of the power station

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