一种用于时变来流下燃烧研究的调控系统及方法

By designing a control system that includes components such as an air compressor, a pressure stabilizing tank, and an electric regulating valve, time-varying regulation of air and fuel flow is achieved. This solves the problem that existing systems cannot achieve time-varying control with multi-parameter matching, ensuring the temperature stability of the gas heater under time-varying conditions and meeting the needs of engine combustion research.

CN117706019BActive Publication Date: 2026-07-17NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Filing Date
2023-11-27
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing combustion test systems cannot achieve time-varying control with multi-parameter matching, and cannot effectively simulate combustion studies of engines under time-varying incoming flow conditions.

Method used

A control system comprising components such as an air compressor, a pressure tank, an electric regulating valve, a flow meter, a heater, and a combustion chamber was designed. By changing the opening of the electric regulating valve and using PID control, the air and fuel flow rates are adjusted over time, ensuring that the fuel-to-gas ratio remains constant during the time-varying control process.

Benefits of technology

It achieves high-precision and rapid response regulation of airflow and fuel flow, and maintains a constant temperature of the gas heater during time-varying control, adapting to the combustion research needs of the engine under time-varying flow conditions.

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Abstract

本发明公开了一种用于时变来流下燃烧研究的调控系统,包含流量调控装置、油路系统和信号反馈系统。流量调控装置由空气压缩机、稳压罐、电动调节阀组、流量计等组成,通过调节不同支路的电动阀实现气流量的精细控制。油路系统包含对应燃烧室和加热器的多路燃油供给,按设定的燃油流量闭环控制。信号反馈系统通过安装在关键部位的压力计和流量计实时采集参数信号。时变调控时,通过PID调节实现空气和燃油流量的闭环控制;通过改变阀门开度和管路通径实现不同的空气时变流量变化率;通过匹配燃油空气的油气比实现温度的精确调节。本发明能够灵活准确地实现气流量及温度的时变调控,满足燃烧过程研究对条件控制的要求。
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