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一、一般情况天津第一发电厂某机组是1961年安装的中压机组,型号为AK—25—127型,设计参数如下: 进汽参数:P_o=35ata t_o=435℃经济功率:N_e=20000KW 额定成率:N_m=25000KW 排汽压力:P_k=0.05ata(冷却水温:t_oh=20℃) 给水温度:t_n=162.4℃(N_o=20000KW) 监视段压力:P=15.5ata(N_o=20000KW) 该机组由一个双列速度级和九个压力级组成,配汽机构为8个喷嘴组8个调节阀门控制,在第一、三、六、八压力级后各有一个回热抽汽口,原设计热力系统有两台高压加热器,两台低压加热器和一台低压除氧器,除氧器和一级高压加热器共用第二段抽汽。回热系统逐级疏水。
First, the general situation Tianjin First Power Plant is a unit installed in 1961 in the medium-pressure units, model AK-25-127 type, the design parameters are as follows: Into the steam parameters: P_o = 35ata t_o = 435 ℃ Economic power: N_e = 20000KW Rated rate: N_m = 25000KW Exhaust pressure: P_k = 0.05ata Water temperature: t_n = 162.4 ℃ (N_o = 20000KW) Monitoring section pressure: P = 15.5ata (N_o = 20000KW) The unit consists of a double-row speed stage and nine pressure-level composition, with the steam unit for the eight nozzle group 8 regulating valve control, after the first, three, six, eight pressure levels have a heat recovery steam outlet, The original design of the thermal system has two high-pressure heaters, two low-pressure heaters and a low-pressure deaerator, deaerator and a high-pressure heater share the second extraction. Regeneration system by level hydrophobic.