Which type of casing are used in centrifugal pump?

The three basic casing types primarily used for centrifugal pumps are the single volute, double volute and vaned diffuser.

Which curve is used in design of volute casing of centrifugal pump?

(a) Q-η curve, (b) Q-H curve, and (c) Q-P shaft curve. As shown in Figure 4(a) and Table 2, with the increase of volute throat area pump BEP moves to large capacity and slightly decreases. Figure 4(b) shows pump pressure head versus flow curve becomes increasingly flat with the increase of volute throat area.

What is a volute and how is it produced?

A volute is a curved funnel that increases in area as it approaches the discharge port. The “cutwater” is located in the discharge casing of a centrifugal pump and it directs the product discharge from the impeller into the discharge volute. Along with the impeller, the cutwater can suffer damage from cavitation.

What does the volute casing contain?

The casing contains the liquid and acts as a pressure containment vessel that directs the flow of liquid in and out of the centrifugal pump. The volute is a curved funnel that increases in area as it approaches the discharge port.

Which type of casing of centrifugal pump is most useful?

Volute casing is the most common type of casing The volute casing pump is the most common type of centrifugal pump. Its characteristic feature is the volute-shaped pump casing which is typical for single-stage centrifugal pumps.

What is the function of volute casing of a centrifugal pump?

The volute casing is designed to guide the flow out of the impeller in order to convert the fluid flow’s kinetic energy into static pressure; it serves to collect the fluid discharged from the impeller and route it to the discharge nozzle (also see Pump casing).

Why centrifugal pump casing is called Involutes casing?

Answer: Yes it does look like an involute that’s why it is called involute casing. The main reason behind this is that as the fluid moves through the casing some amount passes through the runner so, Q decreases and thus the velocity tends to decrease.

What happens in volute casing of centrifugal pump?

What is a pump casing?

Pump casings serve to seal off the intside of the pump to atmosphere to prevent leakage and retain pressure. In the case of centrifugal pumps, they surround the pump rotor which transmits energy to the fluid handled via the impeller(s) mounted on the rotating shaft.

What is the purpose of volute casing?

What are the importance of casing for centrifugal pump?

What kind of pump has a volute casing?

Volute casing pump. The volute casing pump is the most common type of centrifugal pump. Its characteristic feature is the volute-shaped pump casing which is typical for single-stage centrifugal pumps.

What is the volute of a centrifugal pump?

The volute of a centrifugal pump is the casing that receives the fluid being pumped by the impeller, maintaining the velocity of the fluid through to the diffuser. As liquid exits the impeller it has high kinetic energy and the volute directs this flow through to the discharge.

What are the different types of casing in a centrifugal pump?

There are three types of casing in a centrifugal pump are described below. 1. Volute casing. 2. Vortex casing. 3. Casing with guide blades.

Where is the discharge nozzle on a volute pump?

The pump discharge nozzle can be arranged either tangentially on the volute casing or radially in the shaft plane through the provision of a “gooseneck”. It can be arranged at the top, bottom or sides of the volute casing, providing it does not interfere with the pump feet on the casing.