Axial flow compressor surge boundary measurement system

Abstract

The invention discloses an axial flow compressor surge boundary measurement system. Aiming at an axial flow compressor installed in a wind tunnel major loop, by means of the system, the accurate measurement for a surge boundary of the axial flow compressor can be achieved, and it is sufficiently guaranteed that the surge boundary is applicable to future testing conditions of a wind tunnel, and the monitoring is facilitated. According to the method of the system, the measurement process is safe and reliable, and the surge boundary obtained through measurement is accurate; compared with domestic existing continuous type wind tunnel compressor surge boundary measurement methods, the method of the system is simpler, more accurate, safer and more reliable, and the result application is more convenient. The surge boundary measured by means of the axial flow compressor surge boundary measurement system is a smooth curve and conforms to performance characteristics of the axial flow compressor, the line type is simpler, the application is more convenient and faster, and the anti-surge program design and personnel monitoring are facilitated to a greater extent; the system particularly aims at new requirements for conducting measurement at different total pressure, at different stationary blade angles and under the condition to adjust the speed continuously within a total working revolving speed range.

Description

technical field [0001] The invention relates to the field of measuring the surge boundary of a turbo compressor, in particular to a system for measuring the surge boundary of an axial flow compressor installed in the main circuit of a continuous high-speed wind tunnel. Background technique [0002] Axial flow compressors in conventional industrial installations are mostly located in open pipe networks, and the speed, inlet flow, and inlet pressure of the compressors are relatively stable with little change, while the continuous wind tunnel is a special pipe network that is different from conventional industrial plants. The obvious characteristics of the environment: the wind tunnel and the axial flow compressor form a closed loop, the resistance of the pipe network changes frequently, the operating speed range of the compressor is large, the operating conditions are changeable, and individual operating points are close to the surge area, etc., so surge is more likely to occur...

AI Technical Summary

Problems solved by technology

[0004] However, in the field of turbo compressor surge boundary measurement at this stage, especially in continuous high-speed wind tunnel applications, there is still no surge boundary measurement system that can be applied to the user's site

Even if the device or method can complete the determination of the surge boundary, there are still defects such as scattered equipment and operation interfaces, many post settings, and cumbersome procedures, which lead to high safety risks and poor measurement results; the universality of the surge determination device and criteria, The reliability is not strong, which brings great danger to the equipment in the wind tunnel circuit; it is impossible to simulate the actual working conditions such as airflow blockage, Mach number coarse / fine adjustment, and total pressure change in the wind tunnel test model in the future. Few functions, poor research and production value; the method that has been adopted in similar working conditions, the curve composition corresponding to the obtained surge boundary is extremely complicated, the visualization effect is poor, the protection application setting is complicated, and it is inconvenient for personnel to monitor

[0005] It can be seen that the existing devices and methods are no longer suitable for the continuously increasing construction and use requirements of continuous wind tunnels in my country.

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