A deep peaking steam turbine blade erosion test system and its test method

Abstract

The invention discloses a blade erosion test system and a test method of a deep peak-shaving steam turbine. The present invention includes steam turbine test equipment, a particle erosion system and a droplet erosion system; the particle erosion system includes a particle tank, a vibrating device installed under the particle tank, a screening device, a weighing machine, a propulsion device, a high-frequency Electric heating furnace, mixer and particle injector. The particles in the particle tank enter the screening device after passing through the vibrating device. The screened particles enter the propulsion device through the weighing machine. The propulsion device is used to push the particles into the high-frequency electric heating furnace. The frequency electric heating furnace heats the particles, and after heating, the particles enter the mixer, and then enter the particle injector, and the particle injector sprays the particles into the test chamber for the particle erosion test. The invention can be used to study the influence of different experimental conditions on the erosion of steam turbine blades, has the advantages of multiple functions and strong applicability, and is therefore especially suitable for the research on the vibration of deep peak-shaving steam turbines.

Description

technical field [0001] The invention belongs to the field of steam turbine blade erosion tests, and more particularly relates to a deep peak-shaving steam turbine blade erosion test system and a test method thereof. Background technique [0002] Steam turbine blades are the key components of steam turbines, which are subjected to high temperature, high pressure, centrifugal force, exciting force, and blade corrosion and water drop erosion during work. In this working environment, scales, defects, cracks and fractures occur in the blades, resulting in vibration problems, which seriously affect the safe operation of the steam turbine. [0003] With the increasing capacity of steam turbines in power stations in my country, the safety and reliability of blades are becoming more and more important. Fouling of the blades and erosion of solid particles will cause the unit to vibrate if it is mild, and cause the unit to shut down if it is serious. The problem of the blade and its ...

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Problems solved by technology

[0005] There are few existing studies on the erosion of steam turbine blades. With the increase of unit capacity, blade problems are becoming more and more frequent. There is an urgent need for a research system for steam turbine blades.

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