Fuel flow control method and system for a high-temperature burner

Abstract

The invention relates to a fuel oil flow control method and system of a high-temperature combustor. The fuel oil flow control system comprises a flow controller, a fuel oil supply system, a flow sensor, a comparator and an optimal flow identifier. The flow sensor is installed on an oil supply pipeline of the fuel oil supply system and connected with the pipeline. The flow controller is installed in a control cabinet and connected with the fuel oil supply system. The optimal flow identifier determines the optimal flow value needed by the fuel oil supply system under different working situations, and the optimal flow identifier is arranged in the controller and connected with the comparator. The fuel oil supply system is used for supplying fuel oil to a high-temperature combustion system, installed between oil pumps and connected with a combustion chamber of the high-temperature combustor. The comparator is arranged in the controller and connected with the fuel oil flow controller. The invention further relates to the fuel oil flow control method of the high-temperature combustor. The fuel oil flow control method and system of the high-temperature combustor have the advantages that high-quality control over the fuel oil flow can be achieved, high-quality and low-emission combustion of fuel oil is achieved, and the purposes of energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention relates to the technical field of fluid delivery and adjustment equipment, in particular to a fuel flow control method and system for a high-temperature burner. Background technique [0002] The fuel supply system of the high temperature burner is a set of fuel supply system based on the combination of frequency conversion hydraulic technology and proportional throttle valve control technology. The supply system is a system with lag, time-varying and difficult to establish an accurate mathematical model. These factors increase the difficulty of achieving precise control of fuel flow. In addition, for high-temperature burners, the ultimate goal of achieving high-quality control of fuel flow is to achieve high-quality control of burner temperature, which requires determining the desired fuel flow value based on the target temperature value. In the actual working process of a high-temperature burner, the fuel flow rate is usually determine...

AI Technical Summary

Problems solved by technology

In the actual working process of a high-temperature burner, the fuel flow rate is usually determined by the target temperature of the system and the air flow rate in the combustion chamber. The fuel flow rate is usually given by an empirical formula, which is not very accurate. In addition, due to the hysteresis characteristics of the temperature, resulting In the actual combustion process, in order to achieve the target temperature, the fuel flow always exceeds the actual required optimum flow, and is in a fuel-rich combustion state, which leads to energy waste and air pollution by exhaust gas

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