Priming and Lubricating System and Method for Marine Pump Impellers

摘要

A marine pumping system includes a pump for providing a cooling fluid to, for example, an internal combustion engine. The pumping system includes a pump, a reservoir separate from and upstream of the pump for storing cooling fluid, and plumbing downstream of the pump configured to maintain cooling fluid in the reservoir during non-operation of the pump. The reservoir and plumbing configuration minimize dry run time of the pump.

主权项

1. A marine pumping system, comprising:
a pump including a housing and a flexible impeller rotatably mounted in the housing about a rotation axis, the housing including an inlet and an outlet; a reservoir including a body defining an inlet and an outlet, the body further defining a chamber for storing a quantity of cooling fluid in fluid communication with the inlet and the outlet of the reservoir, wherein the inlet is connected to a source of cooling fluid; a conduit connecting the outlet of the reservoir to the inlet of the pump; and a cooling fluid retention device connected downstream of the housing of the pump, wherein the cooling fluid retention device is located above and in fluid communication with the outlet of the pump and the inlet to the reservoir so that when operation of the pump is terminated at least a portion of the cooling fluid downstream of the pump is returned by gravity to the pump to wet the impeller and to the reservoir for storage to prime the pump when the pump is started.