Can the quick-close valve be closed to 1/3?
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Can the quick-close valve be closed to 1/3? Beginners, please feel free to offer your advice! ! Thank you
The quick-close valve is designed for shut-off purposes and can only be fully open or fully closed. The opening degree of the control valve can be adjusted.
No, it can only be fully on or fully off
At present, it’s only possible to switch things on or off completely. Some older units with hydraulic control systems have a handwheel; during startup, the main steam valve is used to increase the speed, and once the speed reaches the level at which the governor starts to function, the main steam valve is gradually opened fully
Old-style hydraulically regulated units are suitable for this; during static brake tests, the valves are closed to one-third of their position. During dynamic tests, this is done in order to reduce the impact force exerted by the valve stem on the valve seat. In hydraulically regulated units, the control system does not function during startup, so the valves are kept fully open, and the main steam valve is used to control the speed – it acts as a rapid shutdown valve. It is only after reaching 2800 RPM that the governor starts to function, gradually reducing the valve opening to maintain the speed. Once again, the main steam valve is opened fully, and the synchronizer is used to increase the speed from 2800 to 3000 RPM
No. The test oil can cause the valve to move slightly, which is used to determine whether the valve is stuck
It’s usually either fully on or fully off; I’ve never used it at half power
Can the adjustment screw be used to control the opening degree? ? ?