About the lubricating oil pump pipeline problem
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As shown in the figure, why are the main oil pump and the accident oil pump connected (check valve, stop valve, restriction orifice plate)? What is the function of this China Unicom pipeline? When does the valve open and close? Please give me some advice, heroes.
This picture of yours dazzles me... I can only help you analyze the problem from a theoretical perspective, but please answer my following two questions first.: 1. What is the function of the main oil pump? What is the function of the accident oil pump? 2. If there is no connection, what will happen in the event of an accident? Therefore, should the stop valve of this communication valve be open or closed?
The arrow should be pointing to a check valve. You can understand it after determining its directionality. Then combine it with the system pressure interlock. The pipeline above is gone, so I don't know what it does. For reference.
Fill the accident pump and lines with oil. When the accident pump is in standby mode, the oil pump and pipelines are filled with oil.
The pipe in the upper right corner is the pipeline connecting the accident oil pump and the lubricating oil pipe. The picture is incomplete: lol