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葛洲坝水轮发电机组500真空破坏阀在机组开、停机运行过程中会频繁启动,迅速地通过开启和关闭阀门对机组补气,这样,在阀门动作过程中会造成阀盘与阀座频繁撞击,对真空破坏阀破坏极大,检修中经常发现阀盘变形现象,甚至出现机组在运行中阀轴断裂造成水淹水导的严重事故。为了解决这个问题,采取加大真空破坏阀阀轴直径等改造措施,提高了真空破坏阀的安全可靠性,确保了机组的安全稳定运行。
Gezhouba turbine generator 500 vacuum damage valve in the unit open, shut down during the operation will be frequently started quickly by opening and closing the valve on the unit gas, so that the valve action will cause the valve plate and seat frequent impact , Greatly damaging the vacuum damage valve, valve disc deformation often found in the maintenance, and even the unit running in the valve shaft rupture caused by water flooding leading to serious accidents. In order to solve this problem, take measures to increase the diameter of the vacuum destructive valve shaft and other transformation measures to improve the safety of the vacuum valve damage and ensure the safe and stable operation of the unit.