RU1778807C - Vacuum arc blow-out chamber - Google Patents

Abstract

Usage: switching low-voltage electric circuits by vacuum devices. Objective: Save energy by eliminating the need for a long-term auxiliary circuit. SUMMARY OF THE INVENTION: The chamber comprises an insulating housing 1, at the end of which a membrane 2 is placed, bearing a movable contact 3 and configured to set two stable equilibrium positions. At the second end of the housing 1, a second membrane 4 is mounted, bearing a semi-movable contact 5. The contacts are installed on contact holders 6 and 7. Closing contacts 3 and 5 is carried out by pressing the contact holder 6 of the movable contact 3, opening - by pressing the contact holder 7 of the semi-movable contact 5. 1 ill.

Description

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The invention relates to electrical engineering, in particular to low-voltage vacuum switching devices

A known vacuum arrester has a chamber containing an insulating casing, at the ends of which membranes are mounted. bearing contacts, and two concentrically mounted screens inclined to the camera axis by about 30 °.

In operation, such a chamber needs energy consumption by an auxiliary circuit.

Closest to the technical nature of the claimed invention, a vacuum arrester chamber is selected as a prototype, comprising an insulating casing, a membrane mounted at the end of the casing, and a contact system, three poles being placed in one casing.

By placing the three poles in such a chamber, the power consumption of the auxiliary circuit is somewhat reduced, however, it also needs to be supplied with the auxiliary circuit during operation.

The aim of the invention is to save energy by eliminating the need for a long-term auxiliary circuit.

This goal is achieved in that the vacuum arcing chamber containing the insulating body, the membrane mounted on the end of the body, and the contact system is provided with a second membrane mounted on the second end of the body, on which the semi-movable contact is fixed, and the first membrane carries movable contact and made with the possibility of setting two positions of stable equilibrium.

The drawing shows a variant of a vacuum interrupter chamber.

The camera contains an insulating casing.

1, at the end of which a membrane is installed

2, bearing a movable contact 3 and configured to set two positions of stable equilibrium. At the second end of the housing 1, a second membrane 4 is mounted. Bearing a semi-movable contact 5. The contacts are mounted on contact holders 6 and 7.

The camera is turned on by pressing the contact holder 6 of the movable contact 3. The membrane 2 undergoes radial compression, passes through the maximum compression position and spreads inside the housing 1, As a result

the movable contact 3 abuts and the semi-movable contact 5, and the circuit closes. Since the membrane 2 in this position remains stably stationary and does not require additional force to maintain the closed position of the contacts 3 and 5, there is no need for additional energy to keep the contacts closed. The circuit can be opened by pressing the contact holder 7 of the semi-movable contact 5. In this case, the membrane 4 bends into the housing 1, and the semi-movable contact 5, abutting the movable contact 3, bends the membrane 2 until it passes through the maximum compression position. Further, the membrane 2 itself assumes the position shown in the drawing, in which the contacts are open. The closing and opening of the contacts can be carried out manually or by an electromagnetic drive, but in any case

energy is consumed only during the switching process. Opening the contacts can be done not only by pressing the contact holder of the semi-movable contact, but also by pulling the contact holder of the movable contact.

The mechanical holding of the contacts in the closed and open position eliminates the need for a long-term activation of the auxiliary circuit, which is achieved

save energy during the operation of the vacuum interrupter chamber.

Claims (1)

SUMMARY OF THE INVENTION A vacuum chamber comprising an insulating housing, a membrane mounted on the end of the housing, and a contact system, characterized in that, in order to save power by eliminating the need for long-term connection of the auxiliary circuit, the chamber is provided with a second membrane mounted on the second end a housing on which a semi-movable contact is fixed, and the first membrane carries a movable contact and is configured to set two stable equilibrium positions,