SU858194A1 - Electromagnetic induction pump - Google Patents

Description

one

The invention relates to power engineering, in particular, to alternating current electromagnetisation pumps for liquid conductive media, and can be used for pumping liquid metals, especially under high pressure, for example, in sod power installations where it is necessary to transport liquid lethal coolants, in particular (sodium, potassium) metals and their alloy

BOB

A known electromagnetic induction pump with an electrically conductive bus welded to the walls of the channel and an envelope pole core of the magnetic circuit on one side. The kanesh of such a pump is a conventional tube, flattened in the active.

An end conductor is welded to the side walls of the channel by a locking bus which bends around the pole core on the outlet side of the liquid metal from the core. Two pole cores of a magnetic circuit with a single-phase coil, closed with each other by a magnetic rod, are adjacent on both sides to the walls of a flat linear channel.

The operation of the pump is based on the interaction of a magnetic field with a current, induced in the liquid metal by the same field and closes the circuit across the conductive June. Moreover, the effect of scattering of the secondary winding (tire) leads to the inphase of the magnetic field and current through the liquid metal.

However, the known pump has low specific energy and weight and size parameters due to the fact

10 that the inductance of the secondary circuit is small. When induction in the kangsha is close to nadvdenii, and the relative equimension of its distribution along the channel length, the possible pressure, developed in the channel, does not exceed the fraction of at15 iosfex1 | 1.

The aim of the invention is to improve the specific energy and mas20 dimensions of the pump.

The goal is achieved by the fact that the pump is provided with pole pieces, protruding towards the output end of the channel, the total length of the tips being determined by the ratio

t

 2,

Claims (2)

V2 / (r oJL where E is the length of the pole tips; (Y is the electrical conductivity of the pumped medium; and is the magnetic permeability of the medium, W is the angular frequency of the supply network. The drawing shows an electromagnetic INDUCTION pump, general view in Fig. 2 is a section AA) in Fig. 1. The pump contains a magnetic conductor, which is made up of pole cores 1 with pole pieces 2 and a clamping frame 3. The single-phase coils of the 4 pans are located on the pole cores 1. The flat linear Kangsh 5 is located in the gap between the half-ends of tips 2. To the side walls 5 over the length of pole pieces 2 when electrified bus 6 is welded; it bends around the pole core 1 at the output end of channel 5. The length of pole tips 2 exceeds the length of pole cores 1, and pole tips 2 are offset relative to pole core 1 towards the exit end of channel 5 The pump works in the following way. When connecting coils 4 to a single-phase AC network, a pulsating magnetic field is induced in the gap between the pole tips 2, which in turn induces com metal currents. These currents, passing through the active zone of channel 5, are then closed along the supply side of the conductive loop b. The currents flowing through the liquid metal induce an own magnetic field in the channel, which, summing up with the primary field, additionally magnetizes the excitement at the entrance to the active field and demagens it at the output. As a result, we obtain induction at the input, equal to the saturation induction of the magnetic protrusion & one at the output, close to zero. The magnitude of the average amplitude of induk-. The length of the eaeor is much less than the induction at the inlet (i.e., the saturation induction) and therefore the length of the pole cores 1 is less than the length of the pole tips 2. The pump can also be implemented in a multiphase design, for example, by sequentially installing pole cores 1 with pole pieces 2 and coils 4 along one channel and combining them into a single multiphase electromagnetic systole. The use of the proposed single-phase electromagnetic induction pump allows, with practically current induced current flowing through the channel, magnetic flux and consumed active power, to significantly increase 10 times the developed pressure and efficiency of the pump in comparison with the known. Claims of Invention Electromagnetic induction pump comprising pole cores with a conductor, single-phase power coils and a conduit for transporting the hard metal with an electrically conductive bus around the pole core from the output end of the channel, which is characterized by the fact that in order to improve specific energy and mass-size parameters of the pump , it is equipped with pole lugs protruding in the direction of the output end of the channel, and the total length of the lugs is determined by the relation i2lff oif} where is the pole pole length nechnikov; C is the electrical conductivity of the transducer; Lo - magnetic permeability Ere-. ct) is the angular frequency of the power supply. Sources of information taken into account in the examination 1, Vleyk A. Electromagnetic pumps of alternating and direct current for liquid metals - Problems of Nuclear Energy, No. 5, 1957, p. 12. AND / Aa