I have a question regarding turbine pumps; could everyone give me some advice?
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The feed for the turbine pump in our unit comes from a high-temperature source; there is a DN25 pipeline for feeding warm water to the pump. The operating procedures for the turbine pump require that the pump be filled with fluid, but there are no high-point vents at either the inlet or outlet, so it’s not possible to release air. How can the pump be filled in such a situation? Some technicians say that a turbine does not require a priming pump; it is sufficient to open the outlet valve and turn on the heating pump line for preheating. Is this okay?
I’m not sure if your hydraulic turbines are of the BB2 type, with inlet and outlet on the same side; if so, exhaust may not be necessary.
Yes, that’s how imports and exports are arranged! !
A priming pump is used when there is positive pressure at the inlet. I don’t know much about turbines, but for turbine equipment, there is positive pressure at the inlet, so a priming pump isn’t necessary
Backflow: one character was missing. When pumping is required, the inlet is at negative pressure, while the inlet of turbine equipment is at positive pressure; no pumping is needed in this case
I’ve seen some information stating that due to the different structure of the turbines, and because the liquid entering them comes at high speed with high pressure, in order to protect the equipment, backflow is usually allowed through the outlet! ! I’m not very familiar with turbines specifically either