Steam turbine oil motive
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Masters: 1. When the rotational speed is stable and the main valve does not operate, is there any other oil in the oil return line of the oil engine besides the periodic pressure relief of the secondary oil of the slide valve that causes the slide valve to vibrate? In other words, is the power oil return continuous? Or is the oil returned only when the speed is adjusted and the slide valve moves? 2. What is the function of the connecting line marked red in the picture?
1. It returns oil continuously. This is a typical Hangzhou Auto control system. The Hangzhou Auto control system rotates the slide valve, and the secondary oil is refueled at intervals, ensuring that the slide valve and oil motor operate without jamming. 2. When the speed decreases, the oil motor needs to run upward, and the oil will leak from the top. There is a cavity at the top of the oil motor. This cavity is connected to the oil return to prevent the control oil from leaking outward along the valve stem of the oil motor. The thin tube is an oil return pipe.
Please tell me； Is it the oil return pipe of the oil seal?
Looking at your picture again, your valve position indicator wire is bent and needs to be readjusted. Otherwise, the analysis of the problem may be inaccurate.