Device capable of using rotary hole disc to generate high-speed cut-off jet flow

Abstract

The invention discloses a device capable of using a rotary hole disc to generate a high-speed cut-off jet flow. The device comprises a fixed wheel disc, multiple wheel disc round holes which are usedfor ensuring smooth passing of the cut-off jet flow and act on samples are evenly formed in the fixed wheel disc in the circumferential direction, semi-disc round holes corresponding to the wheel discround holes are formed in a hole semi disc, in the research state, a high-pressure water pump outlet is connected with a spraying nozzle inlet, a work wheel disc is arranged on a spindle in a sleeving manner, the material samples are mounted on the work wheel disc in the circumferential direction, the semi-disc round holes, the wheel disc round holes and the material samples are in one-to-one corresponding in position, and are kept consistent with the spraying nozzle positions in height, and when the spindle rotates, the fixed wheel disc and the work wheel disc are driven to synchronously rotate. Conversion of a high-speed continuous jet flow to the cut-off jet flow in the steam turbine blade water erosion research process can be achieved, the process of repeated collision of a single water drop and the blade surface in steam turbine blade water erosion can be simulated, quantitative test data about the erosion frequency of the water drops to the samples can be obtained, and the watererosion resistance property differences of different materials can be conveniently and subsequently analyzed and compared.

Description

technical field [0001] The invention belongs to the technical field of industrial equipment, and in particular relates to a device for generating high-speed cut-off jet flow by using a rotating disk with holes, which is applied in the research process of water erosion of steam turbine blades. Background technique [0002] Water erosion has always been a hot issue in the development of steam turbines. It generally exists in the operation of the last few stages of high-power steam turbines, and it is also an important factor restricting the development of steam turbines. Slight water erosion will affect the overall efficiency of the steam turbine unit, and as the degree of water erosion continues to deepen, it may even lead to breakage of the turbine blades and shrouds, seriously affecting the safe operation of the unit. In order to accurately evaluate and predict the turbine blades Water erosion resistance, in recent years, researchers from many countries have also carried ou...

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Problems solved by technology

Slight water erosion will affect the overall efficiency of the steam turbine unit, and as the degree of water erosion continues to deepen, it may even lead to breakage of the turbine blades and shrouds, seriously affecting the safe operation of the unit. In order to accurately evaluate and predict the turbine blades Water erosion resistance, in recent years, researchers from many countries have also carried out related research on the water erosion problem of steam turbines

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