SU1012364A1 - Pulsed liquid-metal connector - Google Patents

Abstract

AND THE FLUSH-METAL LIQUID METHOD, which contains a cylindrical vessel with liquid metal, two solid-metal electrodes, an inductor coil, and a magnetic core, which is the case. due to the fact that in order to increase speed and reliability, it is equipped with a partition made of an electrically insulating material installed in a cil-drier vessel with the formation of a single-turn coil circuit of the liquid metal, which is connected in series with the inductor coil.

Description

(L

with

Yu

with

F 4; The invention relates to electrical switching devices, more specifically to closures with a liquid metal working medium. A liquid metal closure is known, comprising an insulating cylindrical vessel with a liquid metal, two solid metal electrodes and an inductor coil. When a current pulse passes through a coil in a liquid metal, a current is induced, by the interaction of which with a current, a coil generates a force to move the liquid metal, which closes the solid metal contacts. However, in this device, due to the absence of a magnetic conductor, the losses on the scattering flows are large. what lack pn speed. In addition, the elements of the design: the channel is not formed — the movement of the liquid metal, and the closure occurs when the liquid metal matic and the solid electrode are free from contact, so the contact may break due to the occurrence of pinch effect and splashing) metal. Thus, at the moment of switching, the contact will not be stable and reliable in a wide range of switched currents. The closest to the proposed technical essence and the achieved result is a liquid-metal contactor containing an insulating cylindrical vessel with liquid metal, two solid-metal electrodes and an inductor coil. The clamping device is provided with a magnetic core and a porous gasket. The magnetic circuit is made in the form of two coaxial cylinders mounted with a common cylinder, and the mentioned induction coil and a vessel with a liquid metal are placed in the nominal gap with a magnetic core. , and the electrodes are installed above the magnetic conductor at different positions from the gap 2. 3 The disadvantage of this circuit breaker is that for; Any sufficient force acting on the liquid metal ring and displacing it towards the solid metal contacts should be generated. A sufficiently large current pulse of high frequency should be applied to the inductor coil. The aim of the invention is to increase the speed of the closure while improving the reliability of the closure. This goal is achieved by the fact that a liquid metal contactor containing a cylindrical vessel with liquid metal, two solid-metal electrodes, an inductor coil and a magnetic conductor, is provided with a partition made of electrically insulating material installed in a cylindrical vessel with the formation of a single-turn contour of liquid metal that is connected in series with coil inductor, FIG. 1 depicts a pulsed liquid metal switch, a general view; in fig. 2 is a section A-A in FIG. 1. The coupler contains a laminated magnetic core consisting of two coaxially mounted cylinders 1 and 2 with a common chuck 3, an inductor coil 4, an insulating cylinder 5 with a liquid metal 6. A vessel with a liquid metal is divided by a transverse insulating partition 7 and forms. single-turn contour of liquid metal, which is connected in series with the inductor coil. A porous gasket 8 is located at the bottom of the vessel with the liquid metal. The contact assembly consists of contacts 9 and 10. Contact 9 made in the form of an alternating-section cylinder and mounted on the inner cylinder 2 of the magnetic core has its own current lead through the rod 11 from below. The contact 10 has the shape of a ring of rectangular cross section, is located coaxially with the contact 9 and is mounted on a cylindrical insulating vessel 5. The locking device, unlike the known devices, operates at any frequency of the supply current, since the metal moves towards the solid metal contacts by induction dynamic forces arising from the interaction of a magnetic field created by an inductor with a magnetic field. field induced current in the liquid metal coil, and due to the electrodynamic forces arising in the single-turn contour of the liquid metal. The movement of the liquid metal in the direction of solid metal contacts occurs due to the total force equal to the sum of the induction-dynamic forces and electrodynamic. At a low frequency of the supply current, the electrodynamic force generated by the interaction of the field with the supply current flowing in the circuit becomes decisive. In addition, the contactor can also operate with DC power. The expected effect from the application of the circuit breaker is determined by its high Specific indicators, small dimensions, high drive efficiency, speed, high durability and reliability, as well as the ability to work as from the first

alternating current of any frequency, as well as from a source of direct current power.

Claims (1)

PULSE LIQUID-METAL! CIRCUIT BREAKER, containing a cylindrical vessel with liquid metal, two solid-metal electrodes, a coil * inductor and a magnetic circuit, characterized in that / in order to increase speed and reliability, it is equipped with a partition made of an insulating material installed in a cylindrical vessel with the formation of a single ι turn loop of liquid metal, which is connected in series with the inductor coil.