Abstract
The medium in the cooling circulation channel of the magnetic drive centrifugal pump will take away the heat generated by the magnetic eddy current and bearing friction in time to avoid the high temperature demagnetization phenomenon of the permanent magnets. Therefore, the reasonable design of the cooling circulation channel directly affects the stable operation of the magnetic drive centrifugal pump. In this paper, the heat exchange and temperature distribution in the cooling circulating channel of magnetic drive pump are studied by means of numerical calculation of fluid-heat coupling and external characteristic test. The temperature distribution and development law of the isolation sleeve clearance, the bottom of the isolation sleeve and the reflow hole are analysed emphatically, and the convection heat transfer coefficient distribution in the isolation sleeve clearance is studied.
Highlights
Magnetic driven centrifugal pump is a leak-free pump [1,2], mainly used for conveying strong corrosion, toxic, flammable and valuable medium in the process of industrial production
During the rotation of the inner and outer magnetic rotors of the magnetic drive centrifugal pump, Metal isolation sleeve will generate magnetic eddy current heat; If the heat cannot be cooled in time, the inner and outer magnetic rotors will be demagnetized at high temperature, and eventually the magnetic drive centrifugal pump will fail
After the magnetic eddy current heat is generated, a part of the medium needs to be introduced from the conveyed medium to take the heat away, this part will cause the loss of cooling flow, and the efficiency of magnetic drive centrifugal pump is lower than that of ordinary centrifugal pump
Summary
Magnetic driven centrifugal pump is a leak-free pump [1,2], mainly used for conveying strong corrosion, toxic, flammable and valuable medium in the process of industrial production. It is widely used in chemical industry, metallurgy, light industry, food, aerospace, aviation and other industries in recent years because of its characteristics of full seal and no leakage. The research of magnetic drive pump cooling circulating channel involved in this paper belongs to the category of forced convection heat transfer. In the process of magnetic drive pump operation, the wall of the isolation sleeve is a constant heat flux output surface, which belongs to the second boundary condition. In the process of magnetic drive pump operation, the wall of the isolation sleeve is a constant heat flux output surface, which belongs to the second boundary condition. 3) On the basis of the above, the convective heat transfer region is solved by the calculation method of "Partition to solve and boundary coupling" until the convergence is completed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
