assembly of centrifugal pump|centrifugal pump parts and function

One common way of increasing overall pump efficiency for a process is to utilise a bigger pump and run it at a slower RPM speed. Bigger pumps, especially centrifugal pumps, have a higher % BEP. On average, small centrifugal pumps have BEP of 40 – 50%, whereas large centrifugal pumps have BEP of 70 – 80%, with some achieving 90%.

Different types of centrifugal pumps are widely used in various industries worldwide. These pumps are classified based on the number of impellers, type of casing, orientation, and position. Let's delve into the assembly process of a centrifugal pump, focusing on the various components and their functions.

It is one of the simple and exciting topics in fluid mechanics.What is the need for a pump? We require a pump to transmit water from a region of low pressure to a region of higher pressure. The centrifugal pump defines as a hydraulic machine that converts mechanical energy into hydraulic energyby means of a

Types of Centrifugal Pumps Based on the Number of Impellers

# 1. Single Stage Impeller

A single-stage centrifugal pump has only one impeller mounted on the shaft. This type of pump is suitable for applications where a low flow rate and low head are required. The assembly of a single-stage centrifugal pump involves the following steps:

1. **Impeller Installation**: The impeller is mounted on the shaft and secured in place using a locking nut.

2. **Casing Assembly**: The casing is carefully positioned around the impeller and shaft assembly.

3. **Sealing**: Seals are installed to prevent leakage and ensure efficient operation.

4. **Motor Coupling**: The pump is connected to the motor through a coupling to transfer power.

# 2. Multi-Stage Impeller

In a multi-stage centrifugal pump, multiple impellers are stacked together on the same shaft. This design allows for higher flow rates and increased pressure. The assembly process for a multi-stage centrifugal pump is more complex and involves the assembly of each impeller stage individually before final assembly.

Components of a Centrifugal Pump

# 1. Casing

The casing of a centrifugal pump houses the impeller and directs the flow of fluid through the pump. It is typically made of durable materials such as cast iron or stainless steel.

# 2. Impeller

The impeller is a rotating component that imparts energy to the fluid by centrifugal force. It is designed with curved blades to increase the velocity of the fluid.

# 3. Shaft

The shaft connects the impeller to the motor and transmits rotational motion. It must be properly aligned to ensure smooth operation of the pump.

# 4. Seals

Seals are used to prevent leakage of fluid from the pump. Common types of seals include mechanical seals and gland packing.

# 5. Motor

The motor provides the power needed to drive the pump. It is typically electrically powered and must be properly sized to match the pump's requirements.

Assembly Process of a Centrifugal Pump

1. **Preparation**: Gather all the necessary components and tools for assembly, ensuring a clean and organized work area.

2. **Impeller Installation**: Mount the impeller on the shaft and secure it in place using a locking nut.

3. **Casing Assembly**: Position the casing around the impeller and shaft assembly, making sure it is properly aligned.

4. **Seal Installation**: Install the appropriate seals to prevent leakage and ensure efficient operation of the pump.

5. **Motor Coupling**: Connect the pump to the motor through a coupling, ensuring proper alignment and secure connection.

The different parts of the centrifugal pumpare listed below. 1. Shaft and shaft sleeve 2. Impeller 3. Casing 4. Suction Pipe 5. Delivery Pipe See more

API Pump는 Centerline mounted고, 그 외의 Pump들은 Foot mounted 방식이다. 영어로 하면 어려운데 API Pump는 동그란 Pump casing을 딱 허리 쯤에서 잡아주는 형태로 되어있고, Non .

assembly of centrifugal pump|centrifugal pump parts and function