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供热蝶阀误关处理?

问答题
2021-12-25 01:28
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正确答案

1.检查机组中压缸排汽压力,若中压缸排汽压力>2.0Mpa,机组DEH停机保护拒动应立即打闸停机。
2.启动主机交流润滑油泵,检查机组高、中压主汽门、高、中压调门、供热蝶阀、高排逆止门应关闭,检查机组转速应下降。
3.检查两台小机均应跳闸,及时关闭汽泵出口电动门、中间抽头电动门,注意小机转速的变化情况。及时启动电泵给锅炉上水。
4.及时调整轴封压力、热井水位、低压缸排汽温度,投入III级减温器,投入水幕保护;切换除氧器汽源至辅汽联箱供给,及时关闭四抽至除氧器电动门。
5.机组转速降至1200r/min时及时启动顶轴油泵,联系热工检查高压调门或中压调门误关闭的原因,解除机组低真空、发电机主保护、MFT动作保护。
6.视情况高、低压旁路系统暖管,暖管完毕后投运机组的旁路系统。
7.完成其他相应的停机操作。


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