SU503565A3 - Electromagnetic pump - Google Patents

Description

(54) ELECTROMAGNETIC PUMP

The invention relates to the field of magnetic hydrodynamics and can be used to pump electrically conductive media, in particular metals.

Known electromagnetic pump transformer type, containing a flat pipe and a hollow coil, hermetically connected to the pipeline from two opposite sides. A single-phase excitation system with an open magnetic circuit creates a magnetic field in the area of attachment of the hollow turn to the pipeline, with the sector of the magnetic field being directed perpendicular to the longitudinal axis of the pipeline and parallel to the walls of the pipeline to which the hollow turn is attached. The second single-phase excitation system, whose closed magnetic circuit is coupled to the hollow coil, serves to induce current in the hollow coil filled by the fluid being pumped. The interaction of a current induced in an electrically conductive medium with a magnetic field leads to the appearance of forces acting on the medium along the channel of the pipeline pipe.

A disadvantage of the known electromagnetic pump is the presence of circulation of the pumped medium in the part of the hollow coil adjacent to the conduit channel, leading to a decrease in pump performance.

To increase the pump performance by reducing the circulation of the pumped medium, the proposed pump is equipped with two ceramic inserts with openings located in the hollow coil with a double wall with the inner surface of the pipeline, and the open hole areas in the ceramic inserts can be reduced in the direction of movement of the pumped medium.

FIG. 1 presents an overview of the proposed pump; in fig. 2 - hollow coil with tips, the area of the holes in which are constant; in fig. 3 - tip with a variable area of holes.

Electromagnetic pump contains a flat pipe 1, a hollow coil 2, an open laminated magnetic core 3, in the gap of which a pipeline 1 is located, a single-phase coil 4, a closed allowed magnetic core 5 coupled to the hollow coil 2, a single-phase coil 6. Tips 7 are flush with the inner surface of the channel of the pipeline 1. The holes 8 formed by partitions 9 can have both a constant area (Fig. 2) and a decreasing one in the direction of movement of the immersible medium (Fig. 3), which allows to take into account the possibility varying the magnetic field along the channel and thus prevent the circulating medium.

Works pump as follows. When filling the channel of the pipeline 1 and hollow

coil 2 is electrically and magnetic fields directed mutually perpendicularly into the odiophase network by the medium, e.g. liquid metal, and the insertion of coils 4 and 6 into the one-phase network. Volume forces equal to the vector product of current density and magnetic flux density, act along the conduit of the pipeline, creating a head. The presence of inserts 7, for example, of ceramic material, reduces the circulation of metal in the hollow turns, as a result of which the productivity of the pump increases.

Claims (2)

1. Electromagnetic transformer tiaa pump containing a flat pipe. an open magnetic system to create a magnetic field in the pipeline channel, a hollow coil, hermetically connected to the pipeline at the place of creation in it of a magnetic field, a closed magnetic system, the magnetic pipe of which is coupled to a hollow coil, characterized in that, in order to increase pump performance by reducing circulating of the pumped medium, it is provided with two ceramic inserts with openings located in the hollow turn flush with the inside surface of the pipeline. 2. A pump according to claim 1, characterized in that the holes in the ceramic inserts are made with decreasing areas in the direction of movement of the pumped medium. pus- / ig.g.