Principle analysis of the hottest centrifugal pump

2022-08-16
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Analysis of the principle of centrifugal pump

the main flow components of centrifugal pump are suction chamber, impeller and water pressure chamber. The suction chamber is located in front of the water inlet of the impeller and plays the role of guiding the liquid to the impeller; The water pressure chamber mainly includes spiral water pressure chamber (volute type), guide vane and space guide vane; The impeller is the most important working element of the pump and the heart of the flow passage component. The impeller is composed of a cover plate and a blade in the middle

complete the tensile, peeling, tearing, tightening and other mechanical property experiments of the sample. Before the centrifugal pump works, fill the pump with liquid, and then start the centrifugal pump. The impeller rotates rapidly. The blades of the impeller drive the liquid to rotate. When the liquid rotates, it flows to the outer edge of the impeller by inertia. At the same time, the impeller sucks in liquid from the suction chamber. In this process, the liquid in the impeller, such as oxide skin, metal debris and so on, flows around the blades, In the flow around movement, the liquid acts a lift on the blade, and in turn, the blade acts on the liquid with a force equal to the lift and opposite to the direction. This force does work on the liquid, so that the liquid gets energy and flows out of the impeller. At this time, the kinetic energy and pressure energy of the liquid increase

centrifugal pumps rely on the action of rotating impeller on liquid to transfer the mechanical energy of prime mover to liquid. Due to the action of centrifugal pump, the speed energy and pressure energy of liquid flow from the impeller inlet to the outlet are increased. Most of the liquid discharged by the impeller passes through the press out chamber, and most of the speed energy can be converted into pressure until there is no dirt in the discharged oil, and then it is transmitted along the discharge pipeline. At this time, the impeller inlet is formed due to the discharge of liquid, that is, only the effective vacuum or low pressure is transmitted from up, The liquid in the suction pool is pressed into the inlet of the impeller under the action of liquid level pressure (atmospheric pressure), so the rotating impeller continuously absorbs and discharges the liquid

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