RU158211U1 - ARC CHAMBER - Google Patents

Abstract

An interrupter chamber comprising side racks made of insulating material with slots placed between them and deion plates fixed in the recesses, characterized in that it is equipped with a protective curtain made of fiber with a figured hole and installed with the possibility of simultaneous interaction with the upper and rear surfaces of the arcing chamber while the shaped hole is made with the possibility of accelerated removal of the products of the combustion of the arc from the arcing chamber, and the deionic plates are made They are made of ferromagnetic material, and the lower deionic plate is made shortened and doubled.

Description

The utility model relates to electrical engineering, namely to electrical engineering, in particular to electrical switching devices, and can be used in arcing devices of circuit breakers.

The device is installed in each pole of the switching apparatus and performs the function of extinguishing an electric arc in a limited volume when disconnecting an electrical circuit under load.

Known interrupter chamber (patent of the Russian Federation for utility model No. 71813), comprising a housing consisting of side posts made of electrical insulating material, and deionic plates made of copper-plated steel.

A disadvantage of the known arcing chamber is the inability to extinguish the electric arc arising between the parts of the contact system after passing through them the maximum permissible short circuit currents in a short period of time.

The technical task is to create a device that provides the ability to repeatedly disconnect sections of electrical circuits while maintaining stable performance and the minimum dimensions of the switching apparatus.

The technical result consists in minimizing the time of extinction of the arc, as well as in eliminating the spraying of molten metal formed during the burning of the arc.

The problem is solved due to the fact that the arcing chamber, containing side posts made of insulating material with slots, placed between them and secured in the slots of deion plates, is equipped with a protective curtain made of fiber with a figured hole and installed with the possibility of simultaneous interaction with the upper and rear surfaces of the arcing chamber, while the figured hole is made with the possibility of accelerated removal of the products of arc burning from the arcing chamber, and deion nye plate made of ferromagnetic material, the bottom plate is shortened deionnaya and double.

The device is illustrated by illustrations, where

in FIG. 1 shows an arcing chamber; side view

in FIG. 2 shows a section through an arcing chamber; side view;

in FIG. 3 - shows the arcing chamber front view;

in FIG. 4 - shows the arcing chamber rear view;

in FIG. 5 - shows the arcing chamber, a top view;

in FIG. 6 - shows a protective curtain. The device contains:

1. side racks;

2. deionic plates;

3. places of attachment of deionic plates;

4. protective curtain made of fiber;

5. a hole in the protective curtain;

6. bottom deion double plate.

Side racks 1, equipped with slots and made of insulating material.

Deionic plates 2 are made of ferromagnetic material, namely, steel with an anti-corrosion coating, installed between the side posts 1 and fixed in their slots 3.

The use of deionic plates 2 made of ferromagnetic material can improve the retraction of the arc into the arcing lattice, reliably keep the arc within the arcing chamber, significantly reducing the likelihood of the arc leaving the arcing chamber.

The bottom plate 6 is made of steel with an anti-corrosion coating, installed between the side posts 1 and fixed in their slots.

The bottom plate 6 is made shortened and doubled to increase the resource, since it is it that takes over the arc when it leaves the arcing horn of a fixed contact (not shown in Fig.) And operates in the most unfavorable mode.

The arcing chamber is equipped with a protective curtain 4 made of fiber with a figured hole 5 and installed with the possibility of simultaneous interaction with the upper and rear surfaces of the arcing chamber.

The use of a protective curtain 4 from fiber is due to the fact that the arc burns at a very high temperature, under the influence of which a large amount of gas is released from the fiber, which helps to accelerate the attenuation of the arc.

The hole 5 in the protective shutter 4 is intended for accelerated removal of the products of arc burning from the arcing chamber outside the housing of the object of operation through the openings in its cover (not shown in Fig.), Which helps protect the entire device from overheating and ensure its reliability in operation .

The process of extinguishing an arc occurs as follows:

When a short circuit occurs, the free trip mechanism (not shown in FIG.) Of the operating object is activated, the movable contact (not shown in FIG.) Moves away from the fixed contact (not shown in FIG.).

A large current flowing through the contacts causes the appearance of an electric arc.

Under the influence of electrodynamic forces, the arc is repelled from the contacts in the direction of the deion plates 2.

Further, the arc is divided into small arcs, the total arc voltage increases sharply and the arc goes out.

Thus, minimizing the arc extinction time while eliminating the spraying of molten metal formed during arc burning, the task of creating a device that provides the ability to repeatedly turn off emergency sections of electrical circuits while maintaining stable performance and the minimum dimensions of the switching apparatus has been solved.

Claims (1)

An interrupter chamber comprising side racks made of insulating material with slots placed between them and deion plates fixed in the recesses, characterized in that it is equipped with a protective curtain made of fiber with a figured hole and installed with the possibility of simultaneous interaction with the upper and rear surfaces of the arcing chamber while the shaped hole is made with the possibility of accelerated removal of the products of the combustion of the arc from the arcing chamber, and the deionic plates are made They are made of ferromagnetic material, and the lower deionic plate is made shortened and doubled.

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