Regarding issues related to steam turbines, I seek help from experts
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What is the main function of the secondary oil pressure in a turbine? What is the main function of a accumulator? Does anyone have information on the internal structure and specifications of quick-shut valves and speed control valves? Thank you. What is the reason why oil keeps leaking from the valve handle of the quick shut-off valve? Thank you.
The speed of the turbine is transmitted to the speed sensor; the electrical signal generated is converted into a secondary oil pressure signal via an electro-hydraulic converter. Changes in this secondary oil pressure cause the throttle slide valve to move up and down, allowing pressurized oil to enter the cylinder. The piston inside the cylinder then moves the lever system of the control valve, thereby regulating the air valve. The main function of the accumulator is, on one hand, to prevent the main pump from sending low-pressure oil to the regulator in the event of a failure, thereby maintaining oil pressure supply during the startup phase of the auxiliary pump; on the other hand, it is able to provide regulated oil pressure instantly. I’m a beginner; this is all I know. I hope it can help you; let’s learn together*.
The speed of the turbine is transmitted to the speed sensor; the electrical signal generated is converted into a secondary oil pressure signal via an electro-hydraulic converter. Changes in this secondary oil pressure cause the throttle slide valve to move up and down, allowing pressurized oil to enter the cylinder. The piston inside the cylinder then moves the lever system of the control valve, thereby regulating the air valve. The main function of the accumulator is, on one hand, to prevent the main pump from sending low-pressure oil to the regulator in the event of a failure, thereby maintaining oil pressure supply during the startup phase of the auxiliary pump; on the other hand, it is able to provide regulated oil pressure instantly. I’m a beginner; this is all I know. I hope it can help you; let’s learn together*.
Thank you, you’ve already said a lot. I’m a newer beginner than you
Could an expert please indicate what the marked area in the diagram is? Thank you.
Yes, one is a quick-close valve and the other is a speed control valve
Which manufacturer made this valve? After installation, it should be easy to determine based on the on-site procedures; it’s mostly related to the oil circuits. There is a port for collecting leaks from the valve seals, and that’s what I assume – I’m not entirely sure, but it’s somewhat similar to the quick-shut valves used by Hangqi