热动力试验系统温度压力动态调节方法研究

Study on Regulating Method of Temperature and Pressure in Thermodynamics Test System

针对现有大型热动力试验系统动态性能不足的问题,提出了一种动态调温调压的热动力试验系统;建立了其温度、压力动态关系的数学模型,并在SIMULINK中实现了压力温度动态变化的数值仿真;讨论了该系统温度、压力的调节能力及限制因素,并分析了二者调节的相互影响。模拟结果表明,该热动力试验系统不仅能够实现温度、压力的大跨度快速调节,还能实现二者的定斜率调节。

Aiming at the shortage of dynamic performance of existing thermodynamics test system, a kind of thermodynamics test system which can be used to regulating pressure and temperature dynamically was proposed. A mathematical model of the dynamic relationship between temperature and pressure of this system was established and numerical simulation of dynamic regulation of pressure and temperature was realized in SIMULINK. The ability and limiting factors of regulating temperature and pressure were discussed and the interaction between the two factors was analyzed. Simulation results show that the test system has the ability to realize not only large-span and variable-speed but also constant-slope regulation of pressure and temperature.