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cryogenic liquid pump’s working principle
The working principle of centrifugal cryogenic liquid pump is the same as that of centrifugal water pump. Centrifugal pump relies on rotating impeller to do work on the liquid, the prime mover mechanical energy transfer to the liquid. When the pump is full of liquid work, due to the impeller high-speed rotation, the liquid under the action of centrifugal force, driving liquid in the process of flowing from the inlet to the outlet of the impeller, the pressure energy and speed energy are increased, and then in the diffuser chamber and speed can be further converted into pressure energy output. Simple summary: the working principle of the centrifugal pump is: when the centrifugal pump works, relying on the pressure difference between the pump and the pump, the liquid is constantly sucked into the pump, and the liquid obtains kinetic energy by the high-speed rotation of the impeller; The liquid kinetic energy is converted into pressure energy by diffuser or guide vane.
Reciprocating cryogenic pump and reciprocating compressor working principle is similar, is a kind of positive displacement compression machinery. It consists of reciprocating movement of piston (plunger) in the working chamber of the cylinder, so that the volume of the working chamber changes periodically to realize the whole process of suction, compression and drainage.
When the piston (plunger) moves to the right, the volume of the pump cylinder increases, and the pressure decreases accordingly. . so the pressure will rise rapidly, when the pressure to open the discharge liquid when the high pressure liquid discharge valve discharge, this is a reciprocating liquid pump working cycle.
