Vortex reduction cap

摘要

A vortex reduction cap for use within a fluid holding vessel above a discharge port for discharging the fluid from the vessel is disclosed. The vortex reduction cap includes a top solid surface greater than or equal to the area of the discharge port. The vortex reduction cap includes one or more inlets to allow fluid to flow from the vessel to an internal volume of the vortex reduction cap and then to the discharge port in the vessel. A passive element is positioned within the internal volume of the vortex reduction cap so that the flow of fluids through the cap and towards the discharge port of the vessel will be redirected around the passive element.

主权项

1. A vortex reduction cap configured to be positioned within a fluid holding vessel above a discharge port for discharging fluid from the vessel, the vortex reduction cap comprising:
a top solid surface greater than or equal to the area of the discharge port in the vessel; one or more inlets to allow fluid to flow from the vessel to an internal volume of the vortex reduction cap and then to the discharge port in the vessel; and at least one passive element positioned within the internal volume of the vortex reduction cap wherein the flow of fluid through the cap and toward the discharge port of the vessel will be redirected around the at least one passive element, the at least one passive element comprising: at least one first turbine blade with a plurality of individual first blades; and at least one second turbine blade with a plurality of individual second blades; wherein the turbine blades spin as the fluid flows past the blades and the plurality of individual first and second blades, each have a pitch angle, arranged around a central axis, and further comprising at least one shaft mounted to the top solid surface and extending toward the discharge port, said blades mounted so that fluid flow through the vortex reduction cap to the discharge port will cause the blades to rotate around the at least one shaft; and wherein the pitch angle of the plurality of individual first and second blades will cause each of the at least one first turbine blade to rotate around the shaft in a direction opposite the adjacent at least one second turbine blade.