SU758288A1 - Liquid metal switching apparatus - Google Patents

Description

The invention relates to electrical engineering, in particular to liquid metal switching devices, and can be used to create 5 switching equipment for submersible systems.

A pinch-type switching device is known, comprising a case of an elastic material, inside of which an electrically conducting fluid is placed [1]. On the outer side of the case, there is a pinch element, under the influence of which on the elastic case, a separation occurs, 5 of electrically conducting fluid into two. parts that breaks the electrical circuit.

The drawbacks of the device are large dimensions, due to the external position of the pinch element and insufficient switching capacity.

The liquid metal switching device is also known. It contains 25 two current leads installed at the ends of an elastic tube, an internal cavity filled with liquid metal, and an insulating partition installed between the current leads and. Bie ~

2

a variable volume servo installed on one of the current leads, communicating with the internal cavity of an elastic tube £ 2].

The drawbacks of the device is a complex structure, in which the insulating partition must be fixed on one of the current leads and insufficient switching capacity due to one place of an electrical circuit break.

The purpose of the invention is to simplify the design and increase the switching capacity of the device.

This goal is achieved by the fact that in a known liquid metal switching device containing current leads installed at the ends of an elastic tube whose internal cavity is filled with liquid scrap, an insulating partition installed between the current leads and a variable volume tank installed at one of the current leads communicating with "The internal cavity of the elastic tube, the insulating partition. The city is made movable * in the form of at least one ball.

3 '758288 4

Fig ·, 1 shows an apparatus in which the insulating partition is made in the form of one ball; in Fig. 2 - the same, in the form of several balls.

The device contains current leads 1 and 2, between which there is an elastic tube 3, the internal cavity of which is filled with liquid metal 4. Inside the elastic tube 3 there is an insulating ball 5 (FIG. 1) or several balls (FIG. 2) mounted on it. the bellows 6 is fixed, the internal cavity of which communicates with the internal cavity of the elastic tube 3 by means of the channel 7. ' Elastic tube 3 is fixed on the current leads 1, 2 using clamps 8.

The device works as follows.

FIG. 1 and 2 shows the disabled state of the device. To turn on the apparatus ....., it is enough to use any known drive (not shown in the drawings) to act on the bellows 6. At the same time, the liquid metal comes from

 the bellows 6 into the internal cavity of the elastie of the tube 3, increasing its volume. When the inner diameter is elastic

 the tube is larger than the diameter of the ball 5, a liquid metal located on both

'sides of the ball 5, merges, that when' leads to the closure of the electric circuit.

Disconnection of the device occurs after removing the force from the bellows' 6. In

The apparatus inside the elastic tube contains several insulating balls. This allows you to get several breaks when disconnecting, therefore, to increase the breaking capacity of the device.

Lack of need to fix an insulating partition, considerably simplifies a device design.

Claims (1)

Claim Liquid metal switching apparatus containing current leads installed at the ends of the elastic. ¹⁵ tubes, the internal cavity of which is filled with liquid metal, an insulating breakdown, installed between the current drives and a variable volume reservoir, mounted on one of those 20 connectors connected to the internal cavity of the flexible tube, about tons of l. For example, in order to simplify the construction. and increase the switching capacity, the insulating 25 partition is made movable in the form of at least one ball.