Multistage centrifugal pump is a commonly used pump. Now with the development of economy and the progress of science and technology, the pump technology is constantly improving. People who use it are also constantly pursuing the energy saving and environmental protection of pumps. Here is how to save energy for multi-stage centrifugal pump. The multi-stage centrifugal pump is designed according to the principle of centrifugal force. The impeller blade of high-speed rotation drives the water to rotate and throws the water out, so as to achieve the purpose of transportation. There are many kinds of multi-stage centrifugal pumps, which can be divided into civil and industrial pumps in use, and water purification pumps, impurity pumps, corrosion-resistant pumps in transport media.
Through the technical transformation of impeller cutting of multi-stage centrifugal pump, the situation of equipment "big horse trolley" has been changed. Multistage centrifugal pump is the main fluid conveying equipment in petrochemical production process, and the operation of facilities often leaves a large design margin. Because the pump design margin mostly consumes 5.26 million kWh of electricity, resulting in a serious waste of energy. The working principle of centrifugal pump is that the centrifugal pump can send water out because of the centrifugal force. Before the pump works, the pump body and the intake pipe must be filled with water to form a vacuum state. When the impeller rotates rapidly, the blade prompts the water to rotate quickly. The rotating water flies from the impeller under the action of centrifugal force. After the water in the pump is thrown out, the central part of the impeller forms a vacuum area. The water of Shuiyuan is pressed into the intake pipe through the pipe network under the action of atmospheric pressure (or water pressure). In this way, continuous pumping can be realized. It is worth mentioning here that before starting the centrifugal pump, it must be filled with water in the pump shell before it can start. Otherwise, the pump body will not be able to complete suction, resulting in heat, vibration, no water, resulting in "idling", causing damage to the pump (abbreviated as "air lock") and causing equipment accidents.