Adjusting device for electric control valve of gas turbine combustion chamber nozzle

Abstract

The invention provides a fuel flow adjusting device for an electric control valve of a gas turbine combustion chamber nozzle. The fuel flow adjusting device for the electric control valve of the gas turbine combustion chamber nozzle simplifies the processing and debugging process of the valve by adding an electric control technology, and the fuel flow adjusting device for the electric control valve of the gas turbine combustion chamber nozzle comprises a valve shell, a valve mechanical assembly and a valve electric control assembly; the valve electric control assembly comprises an oil inlet joint used for supplying fuel to a first cavity, a flowmeter used for feeding back fuel flow information and outputting a signal, and a microprocessor and a motor used for receiving the output signal ofthe precision flowmeter; the microprocessor controls the motor according to the output signal of the flowmeter, so that the valve mechanical assembly can adjust the fuel flow under the driving of themotor.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a fuel flow regulating device for an electric control valve of a nozzle of a combustion chamber of a gas turbine. Background technique [0002] The existing gas turbine combustor uses a nozzle with a valve to control the fuel flow into the combustor to increase the flow adjustment range and further increase the working envelope of the combustor. The current valves are all mechanical valves. The hole and the precision spring matched with the valve plug jointly control the effective opening under different pressures, so as to achieve the purpose of flow regulation. [0003] However, the inventors found that the processing accuracy of the special-shaped holes and springs obtained under the existing mechanical processing capabilities cannot meet the control accuracy requirements, and each set of valves must be manually selected and a large number of flow adjustments are performe...

AI Technical Summary

Problems solved by technology

[0003] However, the inventor found that the processing accuracy of the special-shaped holes and springs obtained under the existing mechanical processing capabilities cannot meet the control accuracy requirements, and each set of valves must be manually selected and a large number of flow adjustments are performed, which leads to the current production of valves. The scrap rate is high in the process and the processing cycle is long. These problems cause the cost of the valve to be high and cannot be mass-produced and processed.

At the same time, after long-term use, the special-shaped hole is worn out, causing the flow characteristic curve of the valve to deviate from the original design value

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