PLC-based multifunctional gas turbine fuel control device

Abstract

The invention discloses a multifunctional gas turbine fuel control device based on a PLC, and mainly relates to the field of gas turbines. A bevel gear transmission device is arranged in a power cavity, a burning spraying pipe assembly comprises an outer pipe body, an inner pipe body and a sealing end cap, an air electromagnetic control valve and an air flow control valve are arranged on an air channel, a fuel gas electromagnetic control valve and a fuel gas flow control valve are arranged on a fuel gas entering pipe, a fuel oil electromagnetic control valve and a fuel oil flow control valve are arranged on a fuel oil entering pipe, and the air electromagnetic control valve, the air flow control valve, the fuel gas electromagnetic control valve, the fuel gas flow control valve, the fuel oil electromagnetic control valve and the fuel oil flow control valve are all connected with the PLC. The multifunctional gas turbine fuel control device has the beneficial effects that the fuel and air mixing ratio can be accurately matched according to needs; when a gas turbine is just started or the fuel has and air flow is small, power can be better provided for an air compressor, and normal use of the gas turbine is guaranteed.

Description

technical field [0001] The invention relates to the field of gas turbines, in particular to a multifunctional gas turbine fuel control device based on PLC. Background technique [0002] A gas turbine is a rotary power machine that uses continuously flowing gas as a working medium to convert heat energy into mechanical work. In the main process of air and gas, only the gas turbine cycle consisting of three major components: the compressor, the combustor and the gas turbine, is commonly referred to as a simple cycle. Most gas turbines use a simple cycle scheme. Because its structure is the simplest, and it can best reflect a series of advantages of gas turbines, such as small size, light weight, quick start, and less or no cooling water. The compressor inhales air from the external atmosphere, and it is pressurized step by step by the axial flow compressor, and the air temperature is also increased accordingly; the compressed air is sent to the combustion chamber and mixed w...

AI Technical Summary

Problems solved by technology

When the gas turbine is just started or the flow of gas and air is small, the expansion of high-temperature gas will do little work. Since the compressor impeller is used to compress air, it is difficult for the turbine impeller to rotate together with the compressor impeller, causing the central shaft to stop and jam , thus causing failures, and in severe cases, accidents of subsequent machines connected to the gas turbine

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