Installation method of super large type light bulb through-flow type hydro-turbo generator set pipe type base

Abstract

The invention provides a method for mounting a tube-shaped base of an ultra-large bulb tubular turbine generator set. The method comprises the following steps: an inner ring is assembled; circular arcs forming a transitional lining, an outer ring lining and an outer ring respectively are lifted in mounting positions to assemble into a circular ring; the positions of the transitional lining, the outer ring lining and the outer ring are adjusted, so that end faces of the circular ring correspond to form two ring-shaped weld seams; connecting plates are welded between the transitional lining and the outer ring lining and between the outer ring lining and the outer ring; the concentricity, the roundness and the center height of the inner and outer rings of the tube-shaped base are adjusted; a support frame is welded between the inner ring and the outer ring of the tube-shaped base; the concrete is cast; the parts of the ring-shaped weld seams, which are not blocked by the connecting plates, are welded; the connecting plates are cut off, and the parts of the ring-shaped weld seams, which are blocked by the connecting plates, are welded; and the support frame is cut off. The mounting process has the advantages of greatly lowering deformation caused by thermal stress, ensuring the roundness of the outer ring of the tube-shaped base, reducing mounting difficulty, lowering mounting risk and improving mounting precision.

Description

technical field [0001] The invention relates to a method for installing a tubular seat of an extra-large bulb tubular hydroelectric generating set, and belongs to the technical field of bulb tubular hydroelectric generating sets. Background technique [0002] It can be seen from the development trend of hydropower in the world that the importance of the construction of low-head power stations is growing day by day, and the size of generator sets is also developing in the direction of large and extra-large, while my country's hydropower market is also developing from high-head to low-head, which makes the light bulb Tubular hydroelectric generating units have received extensive attention from academia and industry. [0003] The bulb tubular hydroelectric generator set mainly includes a water turbine and a generator that share a main shaft. The generator and bearing components are arranged in the bulb head, and the whole unit is horizontally placed in the flow channel according...

AI Technical Summary

Problems solved by technology

This installation method of pouring concrete after welding is prone to stress and deformation, and the roundness of the outer ring cannot be guaranteed

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