Adaptive attack angle method of axial flow air compressor

Abstract

The invention provides an adaptive attack angle method of an axial flow air compressor. The method comprises the following steps: by building a calculation formula, obtaining a relation between a rotor pitch diameter air feeding attack angle and an adjustable guide vane geometric outlet angle; then determining an adjustable value or an adjustable range of the adjustable guide vane geometric outlet angle based on the relation between the rotor pitch diameter air feeding attack angle and the adjustable guide vane geometric outlet angle according to acquired temperatures, total pressures and static pressures of all positions on the section of an adjustable guide vane inlet and a pre-determined a target value or a target range of the rotor pitch diameter air feeding attack angle; and adjusting a rotating angle of an adjustable guide vane according to the obtained adjustable value or adjustable range of the adjustable guide vane geometric outlet angle, thus realizing an adaptive attack angle of the axial flow air compressor and enabling the attack angle of a rotor of the axial flow air compressor to be maintained in a proper range. Therefore, the axial flow air compressor can keep a good working state within a wide working range, and the workload and the working difficulty of an operator can be reduced.

Description

technical field [0001] The invention relates to a wide range adjustable axial flow compressor, in particular to an adaptive attack angle method of the axial flow compressor. Background technique [0002] Impeller machinery is a very important type of power device, widely used in fields such as aviation, shipbuilding, electric power, metallurgy, energy, medicine and health, and people's daily life. According to statistics in the last 20 years, the compression impeller machinery in today's social life and industrial and agricultural production consumes 30% to 40% of electricity. In the compression turbomachinery, the axial flow compressor occupies a pivotal position. Due to its strong flow capacity and high pressure ratio, axial flow compressors are often the core equipment of factories in energy and chemical industries, as well as the core components of large and medium-sized gas turbines and aeroengines. [0003] In practical engineering applications, axial flow compressor...

AI Technical Summary

Problems solved by technology

[0007] Therefore, the current compressor adjustment method is difficult to ensure that the compressor maintains a good working condition within a wide working range, and the workload of the operators is heavy and the operation is difficult

Images