A gas turbine electromagnetic valve control bleed valve

Abstract

The application belongs to the field of fuel control systems, and in particular relates to a gas turbine solenoid valve-controlled air release valve. Including: housing (1), end cover (2), control joint (3), main spring seat (6), main valve assembly (7) and main spring (8). The electromagnetic valve-controlled air-bleed valve of the gas turbine of the present application is a solenoid-controlled air-bleed valve with a separate electromagnetic valve control structure and a mechanical air-bleed structure, which not only combines the advantages of ordinary mechanical air-bleed valves and electromagnetic valve-controlled air-bleed valves , and reasonably avoid the defects of both. The structure of this application is simple. By setting the speed regulating structure on the main valve assembly (7), the quick opening and slow closing of the air release valve can be realized without an external air source; On the hole, the control joint (3) is connected to the solenoid valve through the pipeline, so that the solenoid valve control structure can be arranged in the low temperature area, so as to avoid the high cost and maturity of the whole solenoid valve control air release valve due to the high temperature and special environment. Low.

Description

technical field [0001] The application belongs to the field of fuel control systems, and in particular relates to a gas turbine solenoid valve-controlled air release valve. Background technique [0002] When the gas turbine works in a non-design state (especially in low working conditions), it is easy to cause the flow capacity of the front and rear booster stages of the compressor to not match, resulting in the phenomenon of front and rear vortex or front and rear vortex. In order to improve the compressor performance Working characteristics, reasonably control the air flow through all levels of the compressor to match the flow capacity, and maintain the smooth and continuous air flow. Usually, anti-surge devices are installed, and the air release valve in the middle stage of the compressor is one of them. . Considering the inherent inertia of the fuel control system itself, it is difficult to ensure that the transient overshoot and stabilization time meet the requirements...

AI Technical Summary

Problems solved by technology

Mechanical bleed valves can usually be divided into two categories. One type does not depend on external air sources. The bleed valve is controlled by the internal air pressure of the engine, but it is difficult to realize the quick opening and slow closing functions of the valve, and the consistency of the valve action is poor; The second type requires an external air source to bleed air. By changing the pressure of the external air source, the pressure of the upper and lower chambers of the valve core is adjusted to realize the control of the valve's instant opening and slow closing.

Solenoid valve-controlled bleed valve can satisfy valve instant opening and slow closing control, but compared with pure mechanical bleed valve, its structure is more The valve, the valve is located in a high temperature environment, the solenoid valve control structure in the air release valve needs to have high temperature resistance, and needs special research and development, the cost of the entire air release valve is high, and the maturity is low

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