A two-phase experimental system for impingement cooling of turbine blade leading edge

Abstract

The invention discloses a two-phase experimental system for leading-edge impact cooling of a turbine blade. The system comprises a cooling air supply segment, a water-mist mixed supply segment, a gas-mist mixed supply segment, an experimental segment and a data collection and analysis system; the cooling air supply segment comprises a high-pressure air pump, a current stabilizing gas tank, a PCHEheat exchange system and a gas solenoid valve; the water-mist mixed supply segment a gas-liquid separator, a liquid reserve tank, a water pump, a liquid solenoid valve and an atomizing device; the gas-mist mixed supply segment a gas-mist mixing device; the experimental segment comprises a gas-mist inlet channel and an impact cooling cavity, the top of the experimental segment is provided with jetorifices, and the two side surfaces are provided with bleeder holes; the data collection and analysis system comprises a data collection and analysis computer and a CCD camera and an infrared thermalimager connected with the data collection and analysis computer; gas and gas-liquid mixed outlet of the PCHE heat exchange system are communicated with the gas inlet of the gas-mist mixing device andthe inlet of the gas-liquid separator respectively, and a liquid outlet of the gas-liquid separator is communicated to the inlet of the liquid reserve tank.

Description

technical field [0001] The invention belongs to the technical field of gas turbine cooling, in particular to a two-phase experimental system for impingement cooling of the leading edge of turbine blades. Background technique [0002] Gas turbines are key industrial equipment for energy conversion, and are widely used in military and civilian manufacturing industries such as electric power, aviation, and ships. my country's "two-machine" major science and technology project aims at this important strategic demand, solves core technical problems, and makes breakthroughs in manufacturing Development bottleneck, to achieve the goal of independent research and development and production. However, with the development of gas turbines, the requirements for energy conversion efficiency and power continue to increase, which makes the temperature of the turbine inlet air continuously increase. In order to ensure the safe and stable operation of the turbine blades for a long time, part ...

AI Technical Summary

Problems solved by technology

In the development process of blade cooling technology, experiment is an important research method, which is an indispensable part. However, the current leading edge cooling test bench is relatively simple, and the supply of working fluid cannot be guaranteed when conducting two-phase cooling research. Stability, and the relevant parameters of the working fluid in the experiment, such as flow rate and temperature response speed, still need to be improved

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