Is the water supply valve on the turbine’s atmospheric safety valve open or closed?
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The atmospheric safety valve on condensing steam turbines is of the water-sealed weight-type design; to ensure reliable sealing, the valve requires condensate water for sealing. After filling the atmospheric safety valve with water, we closed the water supply valve. May I ask the experts: should the water supply valve be in a closed state or an open state? And why? ? ?
The drain should always remain flowing
There should be some overflow water flowing out in order to maintain a normal water level; this allows the water volume to be controlled, but it’s not possible to completely shut off the flow. Once water evaporates or there is a lack of water for other reasons, the valve loses its function. It’s better to follow the procedures as required.
We also ensure that just a little water flows out from the overflow port
Its function is that of a water seal: it is left slightly open to allow a little water to flow out from the overflow port, and this outlet needs to be checked regularly to prevent vacuum leaks caused by this issue.
Keep it on at all times; during each patrol, check whether water is flowing out of the return water overflow pipe to ensure proper water sealing
It must remain open at all times; the flow can be reduced slightly, as long as water continues to flow out of the overflow tube, so as to ensure that the water seal function is maintained continuously.
In the on state, keep water flowing continuously from the outlet to create a water seal.