论文部分内容阅读
认识汽轮机的启动过程就是认识相对静止和运动的金属部件的加热过程,因此掌握其加热规律和特点,就能使汽轮机的启动有章可循和安全可靠地进行。国产200 MW汽轮机组启动中,解决好以下几个主要问题,对启动具有比较重要的意义。1汽轮机启动时的参数与缸温的情况(1)冲动参数:对于缸温为室温或小于50℃的机组的启动,主汽压力选择≥1.5 MPa,主汽温度选择≥240℃,这是规程中的一般规定。为了使中压缸具有较好的加热条件,在启动中,一般选择主汽温度为260～280℃,再热汽
Understand the turbine starting process is to understand the relatively static and moving metal parts of the heating process, so to master the laws and characteristics of heating, you can make the steam turbine started to follow and safe and reliable. Domestic 200 MW turbine start-up, to solve the following major issues, the start-up has a more important significance. (1) Impulse parameters: for the start of the unit with the cylinder temperature of room temperature or less than 50 ℃, the main steam pressure is selected to be ≥1.5 MPa and the main steam temperature is selected to be ≥240 ℃, which is the regulation In the general provisions. In order to make the pressure cylinder has better heating conditions, in the start, the general choice of the main steam temperature of 260 ~ 280 ℃, reheat steam