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一、机组技术特性及振动概况北京第一热电厂三号机系苏制BΠT—50—2型高压高温双抽汽冷凝式机组,容量为5万瓩。该机为双缸共28级,高压转子15级整锻一体,重9.4吨,临界转速为1760转/分,低压转子13级为锻制和套装结构,重21吨,临界转速为1950转/分,高、低压转子用活动式靠背轮连接。机组带有二段调整抽汽: 生产抽汽(10—16绝对压力)在15级后,其压力为13绝对压力时流量为140吨/时; 采暖抽汽(1.2—2.5绝对压力)在24级后,其压力为1.2绝对压力时流量为100吨/时。
First, the unit technical characteristics and vibration profile Beijing No. 1 Thermal Power Plant System B Soviet-made BΠT-50-2 high-pressure high-temperature steam extraction condensate unit, a capacity of 50000 瓩. The aircraft is a total of 28 two-cylinder, high-pressure rotor 15 integral forging, weighing 9.4 tons, the critical speed of 1760 rev / min, 13 low-pressure rotor forging and suits, weighing 21 tons, critical speed of 1950 rev / Points, high and low pressure rotor with movable back wheel connection. The unit is equipped with two-stage extraction extraction: the production extraction (10-16 absolute pressure) after the 15th, the pressure is 13 tons of absolute pressure when the flow is 140 tons / hour; The heating extraction (1.2-2.5 absolute pressure) After the stage, the pressure of 1.2 absolute pressure when the flow of 100 tons / hour.