SU78905A1 - Mercury switch - Google Patents

Description

Delayed time mercury contacts are available for intermediate installation; 1st, gas and low relays.

Similar contacts are known with instantaneous opening or ignition, in which mercury is poured through pipes, connecting connecting vessels. The disadvantage of such contacts is aaiiiicHMocTb exposure time from the temperature and the inability to save time from the steps.

In the described mercury contact the 1edostntok ycTi} a: it4i nsnolzovaniem termokompensiruyushego npiU.riocoo.iCiMiH, nalonmer bimetallic plate upraVoT yushego needle k 1ananom throttling openings and using a number ontact, pacni}; io i OHHi ix Comte in separate sleeves ktnyh .

In addition, the contact provides for a series of design measures that ensure an increase in the potential of mercury contact and mg1- (oats return of mercury to the original, 1n the state of the Bosnian contact of the contact ycTpoileTBa to the normal number one.

On fng. 1 and 2 two projections of normally closed are given; and on fng. 3 and 4 are two projections orormally different mercury contacts, we propose an Optina with four stages Mn /, II, III, IV time delays and yr,: turn iOM at 90 °.

Mercury contact is a glass, U-shaped, hermetically sealed and partially filled with mercury tube with a contact system under vacuum.

The U-shaped tube consists of a system of collecting vessels: a collector /, a connecting tube 2, a chamber 3 and a conical contact chamber 4.

In the chamber 3 there is a valve in the form of a ball 7, covering a large opening, which communicates the chamber 3 with the connecting tube 2.

In normally closed contacts, ball 7 is removed from the mat) and a shaft with a higher specific gravity than mercury. This achieves an instantaneous return of mercury to the initial cocTOHHiie at the return of the contact device to the smallest position. In normally open contacts, the ball 7 is made of steel or glass.

The connecting tube 2 communicates with the contact chamber 4 through the dross, a 1-sleeve tube 8, the hole in which closes the needle-shaped clans 12. The latter is controlled by a thermocouser adapted, which is used a bimetallic nlastina 13.

The contact chamber 4 is divided into two parts by an insulating partition 6 and is provided with inclined contact sleeves 9, in which a number of contacts 10 permanently covered with mercury are exchanged. This increases the power of the preferred mercury contact compared to the known muds.

For the free passage of mercury vapors between the associated vessel1. (And a connecting tube 11 is provided connecting the contact 4 with the collector 1. To increase the strength and rigidity of the structure, the U-shaped tube is provided with a stiffener 5.

The mercury contact is enclosed in a metal holder (support or collar), the axis of which is associated with a rod or cross member of a relay or apparatus.

The normally closed co-tact (Figs. 1 and 2) works as follows.

Its normal position is that where:. axis contact camera 4 horizont.a.na.

When a relay or an apparatus with which a contact device is connected is triggered, the latter is used. The watch is turned clockwise to the position at which the alcgact: and camera 4 is installed vertically (Fig. 1). At that, ball 7 instantly closes the side opening of chamber 3, as a result of which mercury flows directly from contact chamber 1Ы 4 through throttling tube 8 into connecting tube 2, filling it and collecting container / and alternately (pairwise) opening contacts 10 with time delay in time dke from / to stage IV. Mercury droplets remain in the sleeves of the 9 pins thanks to their drag.

When the relay or device returns to its original (normal) position, the contact device turns counterclockwise. At the same time, the axis of the chamber 4 is set in the horizon. position, HjapHK 7 goes down, opening the side opening of chamber 3, and mercury through chamber 3 instantly fills contact chamber 4 and closes all contacts 10.

Normally open the contact contact is as follows.

Its normal position is such that the axis of the connecting tube 2 is horizontal, ball 7 floats in the chamber and all contacts 10 are open.

When a relay or apparatus with which a contact device is connected is triggered, the latter is turned counterclockwise in a position, in which the contact chamber 4 is set to the vertical position (Fig. 3). At the same time, 1narik 7 instantly closes the upper opening of chamber 3 and the mercury slowly flows from the connecting tube 2 through the throttling tube 8 into the contact chamber 4 and alternately (pairwise) closes contacts 10 with WYOI idle time in the order from / to IV level .

When a relay or apparatus returns to its normal position, their mechanism rotates the contact device clockwise to its original position. When the axis of the connecting tube 2 is set to the horizontal position, the ball 7 is moved upwards.

Opening the larger opening of chamber 3, and mercury through chamber 3 pours into the connecting tube 2, fill it and collector 1 and instantly open all contacts 10.

1. Mercury switch (or switch) with a rotary body, operating with a time delay, carried out by slow mercury overflow through a throttling hole when it is tilted, and with instantaneous opening 1 or by closing the contacts when the switch returns to its original position, and with the fact that, in order to ensure the independence of time exposure on temperature, a thermocompressing device was used, for example, a bimetallic plate controlling the needle valve of the throttling hole.

2. In the switch of item 1, a row of contacts located in the contact chamber at different heights is attached to change the time support in steps.

3. The switch on the PP. 1 and 2, characterized in that, in order to increase the power to be switched off, the contacts are arranged in separate inclined arms B and are permanently covered with mercury.

4. The switch on the PP. 1-3, characterized in that. that the contact chamber is divided into two parts by an electrically insulating partition 5. The switch on PP. 1-4, characterized by the use of a ball valve with a shch.arikom from a material with a large specific gravity than the specific gravity of mercury, in order to effect an instantaneous transfusion of mercury and return the switch to its original position.

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