某微型燃气轮机适应高原起动的技术方案

为满足某微型燃气轮机能同时在平原及不低于4500m高原地区安全可靠运行，通过设计减小单油路离心式燃油雾化喷嘴的流量数，以及改变喷嘴与供油控制系统的耦合工作特性，设计利用起动泄油系统，在降低点火与起动过程供油量的同时提高了燃油喷嘴的雾化及点火性能，解决了高原起动超温问题。平原及高原地区试验证明，点火起动成功率为100%、高原起动过程最高排气温度为720℃，与原设计状态在平原环境工作时一致、起动时间小于40s，可保证平原、高原点火和起动过程的安全性与可靠性，满足平原、高原条件下的燃气轮机性能。 

Starting technical scheme of a micro gas turbine adapting to plateau

In order to ensure the micro gas turbine can be reliably and safely operated on the plain and plateau area not less than 4500 m, this technical solution was designed by reducing flow number of single centrifugal fuel atomized nozzle, considering the parameter matching of oil supply control system. When the ignition and fuel supply quantity at starting process was reduced, and the coupling of nozzle and oil control system was changed, the problem of starting over temperature on the plateau was solved. The test on plain and plateau showed that the success rate of ignition start-up was 100%, the highest exhaust temperature was 720℃ through plateau starting process, which was consistent with the state of the original design working environment on the plain, and the starting time was less than 40s. This can guarantee the safety of ignition and starting process and reliability on plain and plateau, helping to satisfy gas turbine property on the condition of plain and plateau.