SU23187A1 - Alarm device for fire and alarm - Google Patents

Description

The present invention consists of a specific form of signaling device for fire and alarm signaling. The device can be used to maintain, for example, a group of buildings, and works perfectly automatically, giving control signals to the main station about the state of its lines and fire signals.

The drawing shows a diagram of the device.

Any damage that occurred in the line (short, open, etc.) is triggered by the auxiliary BR relay, which is included in the control device circuit and is dependent on other relays that control the good condition of this installation. The BP relay by its contact a closes the circuit of a slowly acting (for example, thermal) relay TP (positive pole of the current source, contact a of the relay TP, contact of rest of the rotating searcher AND and negative pole).

After a certain period of time, which is necessary, for the corresponding heating of the winding of the relay TP, the latter is triggered and closes the circuit: -f- / contact b of the relay TP, elec / magnet

 seeker He, contact, pulse-relay PR, I -. The electromagnet AY, having excited, j will move the finder's brushes from the zero position I, which will cause the following changes in the circuit: j 1) the winding of the TP relay turns off and then its contact b is opened; 2) The electromagnet AY is supplied by power from the 1st region // the finder I. The simultaneous operation of the electromagnet 5th also closes the relay contact circuit by the PR contact in this electromagnet AY. But triggered PR relay with its contact g turns off the electromagnet circuit Hey, and the latter opens the circuit of the PR relay with a contact. Thus, an EI electromagnet and an LR relay are jointly dependent on each other, causing the searcher to rotate until its brushes engage the zero position contact, in which the EI electromagnet loses power. In this position, the TP coil is turned on again, and the entire process described is repeated again. Simultaneously with the excitation of the electromagnet, the EI receives power and the buzzer 3, which operates on the transformer primary winding T. The current inducting in the secondary winding through the corresponding bus // // contacts of the Z finder, when it rotates, enters the detector, and from there into the line.

Thus, in one revolution, the searcher sends several phonical signals to the line, the number of which corresponds to the number of a given substation. The change of this number is made by switching in the contacts of the bus III finder. Obviously, the signals will be sent as long as the damage continues. If necessary, sending signals can be produced by direct current, for which one pole is connected to the corresponding contacts of bus III

and the other pole is on

batteries,

in the line.

The subject of the patent.

A fire and alarm signaling device, characterized by the use of a slow-acting TR relay and a rotating finder with an electromagnet that works in conjunction with a pulse relay PR, which the searcher is designed to activate when the relay TPf b closes the circuit of this relay, which is restored after each seeker through his contact rest about.

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