SU1379824A1 - Electric switch - Google Patents

Abstract

The invention relates to electrical engineering and can be used to turn on equipment when it leaves the water. The body is made of two chambers 5,6, which are partially filled with a liquid dielectric. Contact 2 is connected to load 4 via spring 13 and current collector 14, and contact 1 to current source 3. When the pressure changes, the elastic wall 11 of chamber 6 acts on rod 10, which opens contacts 1.2. Spring 13, unclenched, returns contact 2 to its original closed position. The position of the contacts can be adjusted by screwing the chamber 5 into the chamber 6. 1 vp f-ly, 9 ill.

Description

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The invention relates to electrical engineering, to switching off devices, which are sometimes either in air or in iodine, and can be used to turn on equipment when it leaves

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The purpose of the invention is to increase reliability.

FIG. 1 shows an electrical switch, front view, in FIG. 2- the same plan; in fig. 3-9 - details of the electric switch.

An electrical switch to turn on the equipment when it leaves the water contains a fixed 1 and a movable 2 contacts connected to a current source 3 and a load D. Contacts 1 and 2 are installed inside a sealed enclosure consisting of a constant volume chamber 5 and a variable chamber 6 volume. Chambers 5 and b have a common cavity 7. The fixed contact 1 is fixed to the wall of the chamber 5 of a constant. The movable contact 2 is mounted for movement along the axis O, -O, the chamber, moreover, both contacts 1 and 2 are insulated from water. Chamber 6 and cavity 7 are partially filled with liquid dielectric 8, for example, transformer oil.

Both chambers 5 and 6 are made of insulating material. A fixed contact 1 along the axis O, -O, the chamber has an opening 9, in which a pin 10 is installed with a gap, one end of which contacts the moving contact 2 and its other end with an elastic elastic end wall 11 of the variable volume of the chamber. In this case, a metallic return spring 13 is installed between the movable contact 2 and the end wall 12 of the constant volume chamber 5, which is co-operating with the movable contact 2 and with the down-conductor 1A located on the end wall 12 of the fixed volume chamber 5 and removed from the compartments of the chamber, The withdrawal from the fixed contact 1 is made in the form of a locking bolt 15. Chambers 5 and 6 have a threaded connection. The rod 10 can be performed with the head 16

The volume of air in the cavity / chamber

at Normal atmospheric pressure is equal to the free-running volume of the moving contact 2.

1ka source - chemical current source or turbo-electric generator, depending on water flow, load

4- radio transmitter from 17. A groove 18 for the passage of a liquid contact 1 from the side of the hole 9 is made for the passage of a liquid dielectric 8. The elastic end wall 1 1 is made of rubber and fixed on the end 6 of the variable volume with the help of bandages 19 As wall 11, an elastic membrane made of plastic or metal foil can be used. Spring

13 has metal washers 20 and 21 at the ends, soldered or welded to it. The current lead 14 is fixed on the chamber 5 by means of a nut 22, a rubber washer 23 and a metal washer (not shown). To current lead

14prip n wire. The bolt 15 passes through the hole in the chamber 5 and is screwed into the fixed contact 1. The bolt

15 is equipped with a rubber washer 23 and a metal washer (not shown). To bolt 15 prip n wire. The current taps 14 and 15 outside the chamber 5 and the location of the ration are covered with insulating varnish or sealant.

The free travel of contact 2 is selected depending on the change in volume of cameo 6 when moving the rod 10 Bdol axis 0 (-0 (cameras at distance a. The electric switch is fixed on the equipment carrier, for example a dolphin, so that when the dolphin moves in water) podi is directed along the axis of the camera 0 | -0 ((along the arrow).

The electrical switch operates in the following way.

In water, the static pressure of water or the pressure of water flow presses on the elastic wall 11 and compresses the air in cavity 7, while the rod 10 moves along the O, -O axis, the chamber and opens contacts 1 and 2, disconnecting the load 4 from the current source 3 . The opening of contacts 1 and 2 is associated with the compression of the spring 13. In air, pressure is exerted on the outside of the wall 11, and the spring 13 opens the contact 2 to the initial position of the contacts 1 and 2. The position of the contacts 1 and 2 can be adjusted by screwing in cameras

5c to chamber 6, while increasing the tension of wall 11 and decreasing

specific pressure, which increases the sensitivity of the switch to external static or dynamic pressure.

During operation of the apparatus at great depth, the external pressure of water on the switch walls is balanced by the internal pressure of the liquid 8 on the chamber walls, which allows thin walls of the chamber to be made and chambers 5 and 6 are made of synthetic material, for example plexiglass, and thereby significantly reduce the weight of the switch compared with the camera switch, having an air cavity, since such a chamber wall must be calculated on the pressure of the water column.

The switch is filled with a liquid dielectric before installing the wall 11 on the housing (before applying the tires 19).

The proposed switch can be used in conjunction with the well-known, while both switches are connected in series, they ensure reliable switching on of the equipment in air and increase the likelihood of turning it off in water, which is especially important when using it on a dolphin that takes different positions in water and rest.

Claims (2)

1. Electrical switch containing a sealed enclosure, state 0 five five 0 five 0 uiHii from a rigid cell chamber and flexible wall chambers that have a common cavity and are filled with a liquid dielectric, while both chambers are connected to each other by means of a threaded connection, movable and fixed contacts are placed (high in the case and connected to the current source and a load, wherein the fixed contact is fixed on the wall of the chamber having rigid walls, and the movable contact is mounted with the possibility of reciprocating movement, and a return spring, characterized in that, in order to increase reliability, It is equipped with a rod and a conductor, both chambers are made of insulating material and partially filled with a liquid dielectric, fixed contact is made with a central hole in which a rod is installed with a gap so that its one end can act on the movable contact and the other end abuts into the flexible wall of the corresponding chamber, wherein the return spring is placed between the movable contact and the end wall of the chamber with rigid walls and is connected to a collector located on said torus tsovo wall of the specified camera and displayed outside this camera. 2. A switch according to claim 1, characterized in that a locking bolt is used as the current lead. 0:} ig.g Fig.z jig eleven FIG. five FIG. 6 ftf sixteen sh Fig 7 Mr. Yu FIG. eight 1U FIG. 9