燃气轮机燃料控制系统中非线性特性对其性能的影响研究  

Effects of Nonlinear Characteristics on the Performance of a Gas Turbine Fuel Control System

作　　者：肖旺 黄大文 刘功银 马永飞 张会生[2] XIAO Wang;HUANG Dawen;LIU Gongyin;MA Yongfei;ZHANG Huisheng(Petrochina West Pipeline Company,Urumqi 830000,China;Institute of Turbomachinery,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]中国石油管道联合有限公司西部分公司,乌鲁木齐830000 [2]上海交通大学叶轮机械研究所,上海200240

出　　处：《动力工程学报》2020年第4期290-296,共7页Journal of Chinese Society of Power Engineering

基　　金：中石油自研资助项目(XG-JCGL-CX-KJXX-01-JL-03/201502)。

摘　　要：以驱动用燃气轮机为研究对象,考虑电液伺服机构中的非线性因素,从液压机械的基本原理出发建立了燃料控制系统模型,研究了燃料计量装置的动态特性以及电液伺服机构的死区继电特性对燃料控制系统的影响。结果表明:燃料控制系统的电液伺服机构可以快速精确地控制计量活门开度,等压差活门可以保证计量活门前后的压差维持在0.25 MPa左右;死区宽度对燃气轮机的动态特性有明显影响。Taking the gas turbine for driving purpose as an object of study, a model was established for the fuel control system considering the nonlinear characteristics of the electro-hydraulic servo actuator based on the hydro-mechanical theory, so as to investigate the effects of the following factors on the performance of the fuel control system, such as the dynamic behaviors of the fuel metering unit, the dead zone relay characteristics of the servo actuator, etc. Results show that the electro-hydraulic servo actuator can control the opening of the metering valve fast and precisely, and the constant differential pressure valve can maintain the pressure difference at 0.25 MPa. The width of dead zone has a great effect on the dynamic performance of the gas turbine.

关 键 词：燃气轮机 燃料控制系统 电液伺服机构 死区继电 

分 类 号：TK478.9[动力工程及工程热物理—动力机械及工程]