Steam turbine whole annular blade grid heating blowing sweeping dehumidification experiment system and testing method

Abstract

The invention discloses a steam turbine whole annular blade grid heating blowing sweeping dehumidification experiment system and testing method. The steam turbine whole annular blade grid heating blowing sweeping dehumidification experiment system comprises a main flow humid air supply pipeline, a blowing sweeping gas supply pipeline, an experiment testing section and a humidification testing system. The main flow humid air supply pipeline comprises an air pump, a regulating valve, a liquid storage box, a water pump, an atomization device and a main flow gas flow stabilizing chamber. The blowing sweeping gas supply pipeline comprises a gas compressor and a blowing sweeping gas flow stabilizing chamber. The experiment testing section comprises a main flow channel, a blowing sweeping gas main pipeline, a blowing sweeping gas distribution cavity, blowing sweeping gas branch pipelines and a whole annular blade grid. The humidification testing system comprises particle size analyzers and aliquid film high-speed shooting system. By the adoption of the steam turbine whole annular blade grid heating blowing sweeping dehumidification experiment testing method, the actual running situationof a steam turbine blade can be simulated, dehumidification performance parameters of different types of blowing sweeping holes are obtained through testing, and the critical experimental data reference is provided for the design of a dehumidification structure of the steam turbine blade.

Description

Technical field [0001] The invention belongs to the field of steam turbine dehumidification, and in particular relates to a steam turbine full circle cascade heating, purging and dehumidifying experiment system and a test method. Background technique [0002] The operation of the steam turbine mainly relies on the conversion of the thermal energy of the steam into mechanical energy to continuously perform work, and the steam will condense and form water droplets due to the reduction of parameters during the flow process. Especially in the last few stages of the blade channel, the droplet content is relatively high. Small droplets are deposited on the surface of the stationary blade to form a water film, and are torn by the high-speed airflow into large droplets hitting the surface of the moving blade, resulting in water erosion. Damage the surface shape of the blade, increase the flow loss, affect the efficiency and output power of the steam turbine, or cause large-area damage to...

AI Technical Summary

Problems solved by technology

However, there are only conventional blade suction dehumidification test benches in the public information at present, and there are no related experimental systems and test methods for heating, purging and dehumidification. Cascade heating, purging and dehumidification experimental system, for the reference of relevant research and design personnel

Images