Regenerative turbine pumps, also known as peripheral pumps or peripheral turbine pumps, are a type of centrifugal pump that operates on a unique principle called the regenerative or peripheral impeller effect. These pumps are designed to handle low-flow, high-head applications, making them suitable for situations where high pressures are required in compact systems. Regenerative turbine pumps are commonly used in industries such as HVAC, refrigeration, automotive, and aerospace. Here are some key features and components of regenerative turbine pumps:

1. Impeller: The impeller in a regenerative turbine pump is typically a multi-bladed, radial-flow design. It features a unique shape with curved vanes that direct the fluid flow in a spiral or circular path around the impeller periphery. The impeller’s rotational motion imparts kinetic energy to the fluid.
2. Diffuser: The diffuser is a stationary component located immediately downstream of the impeller. It helps convert the high-velocity kinetic energy of the fluid into pressure energy by slowing down the fluid flow and gradually expanding the cross-sectional area.
3. Volute Casing: Regenerative turbine pumps generally have a volute-shaped casing that surrounds the impeller and diffuser. The volute casing provides a path for the fluid flow and assists in directing the fluid from the impeller to the outlet.
4. Shaft and Motor: The shaft connects the impeller to the motor and transmits the rotational motion. The motor provides the power to drive the impeller and generate the pumping action.
5. Inlet and Outlet Ports: Regenerative turbine pumps have separate inlet and outlet ports for fluid entry and exit. The fluid enters the pump through the inlet and is discharged at a higher pressure through the outlet.

Regenerative turbine pumps offer advantages such as high-pressure capabilities, compact size, efficient performance at low flow rates, and the ability to handle liquids with low viscosity and low specific gravity. They are suitable for applications such as boosting water pressure, circulating refrigerants, fuel injection systems, and oil burners.

Proper selection and sizing of regenerative turbine pumps based on factors such as flow rate, pressure requirements, fluid properties, and system characteristics are crucial for optimal performance. Regular maintenance, including checking for impeller wear and maintaining proper clearances, is important to ensure the pump’s efficiency and longevity.

It’s essential to follow manufacturer guidelines and recommended operating procedures for regenerative turbine pumps to achieve optimal performance and reliability.

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