Centrifugal Pump Engineering Technology Specifications
Centrifugal pumps are commonly used in the industry to transfer fluids. They are widely used due to their reliable operation and simple structure. Centrifugal pumps are widely used in the chemical industry, petroleum, marine engineering, power plants, water supply systems, fire fighting systems and other fields. In the selection of centrifugal pump engineering technology, the following guidelines should be used as a reference.
A. Strength and Sealing
The strength of the centrifugal pump is composed of two parts, one is the mechanical strength, and the other is the pressure resistance of the material for the transport fluid. It is necessary to consider both strength and sealing to ensure the reliability of the pump operation. The mechanical strength of a centrifugal pump can be determined by calculations according to relevant standards. The sealing part of the pump requires a strong pressure-bearing capacity, and it must also have good wear resistance and corrosion resistance according to the fluid characteristics.
B. Efficiency
The efficiency of a centrifugal pump is the ratio of the useful power of the pump to the input power, which is related to the design parameters of the pump and the selection of the correct type and size. For example, a pump with a larger impeller diameter will have a better efficiency.
The selection of the pump structure should also take into account the cavitation characteristics of the pump. When the pump rotates quickly, if the suction pressure is too low, bubbles will form in the liquid due to the decrease in absolute pressure. If the suction pressure is too high, the absolute pressure of the liquid will be too high and the bubbles will collapse and cause cavitation. Therefore, it is necessary to select a reasonable suction pressure for the pump to ensure its smooth operation.
C. Noise
The noise of Centrifugal pumps is divided into two types, that is, flow noise and mechanical noise. Flow noise is generated by the movement of fluids in the pump and is difficult to control. Therefore, it is necessary to pay attention to noise control when designing the pump structure and choose appropriate materials to reduce noise.
D. Safety Considerations
When selecting a centrifugal pump, the safety performance of the pump needs to be considered. The most common safety precaution when using a centrifugal pump is to install a relief valve. The relief valve is used to reduce the pressure of the fluid in the pump if the suction pressure or pressure decreases below a certain value, thus protecting the pump from damage. In addition, it is also necessary to pay attention to the external leakage of the centrifugal pump in use.
E. Reliability
The reliability of centrifugal pumps is an important factor to be considered when selecting and using the pumps. It is necessary to consider the materials and bearings used for the pump. The choice of materials should not only depend on their strength and wear resistance, but also on the corrosion-resistance of the material, which helps to ensure the long-term performance of the pump.
In addition, in order to ensure the reliable operation of the centrifugal pump, the installation and maintenance of the pump are also important. Therefore, it is necessary to do a good job of inspection and maintenance of the pumps during and after use to ensure its reliable operation.
In conclusion, centrifugal pumps are widely used in the industry due to their reliable operation and simple structure. In order to ensure their reliable operation, it is necessary to pay attention to the selection of materials and take into account the strength, sealing, efficiency, noise, safety and reliability of the centrifugal pump engineering technology.
