Process for Preventing Rotating Stall and Surge in a Turbomachine

摘要

The present application provides a process for preventing rotating stall and surge in a turbomachine compressor. The compressor may include air extraction pipes connecting the compressor to a turbomachine exhaust area or to the atmosphere, at least one of the pipes is fitted with a flow regulation valve, and each valve has an adjustable degree of opening. The process includes, for at least one of the valves, a complete opening command when the compressor rotation speed is less than a predetermined threshold value beyond which there is no longer any risk of rotating stall and surge and a command for lowering the degree of opening of the valve when the rotation speed of the compressor exceeds the threshold value.

主权项

1. A process for prevent rotating stall and surge in a compressor of a turbomachine, with air extraction pipes connecting the compressor to an exhaust area of the turbomachine or to the atmosphere, at least one of the air extraction pipes including an air regulation valve, and each valve including an adjustable degree of opening, comprising, for at least one of the valves:
a command for completely opening the valve when the compressor rotation speed is less than a predetermined threshold value; and a command for lowering the degree of opening of the valve when the compressor rotation speed exceeds the predetermined threshold value.