ГИДРАВЛИЧЕСКАЯ РЕГУЛИРУЕМАЯ НАСОСНАЯ СИСТЕМА И СПОСОБ ЕЕ РАБОТЫ

摘要

A fluid controlled pumping system includes a pumping unit disposed within a fluid cavity. The pumping unit includes a passage extending to a suction end of the pumping unit. The system also includes a pressure source coupled to the passage and operable to force a fluid outwardly from the passage proximate to the suction end of the pumpimg unit. The system includes a pressure sensor coupled to the passage. The system further includes a controller coupled to the pumping unit and operable to regulate an operating parameter of the pumping unit using the fluid pressure. A fluid level controlled pumping system includes a pumping unit disposed within a fluid cavity. The pumping unit includes an inlet operable to receive a fluid to be pumped from the fluid cavity. The system also includes a valve slidably coupled to the pumping unit. The valve includes a passage for receiving pumped fluid from an outlet of the pumping unit. In response to a decreasing fluid level within the fluid cavity, movement of the valve relative to the pumping unit to recirculate the pumped fluid from the outlet to the inlet.