SU1401498A1 - Fire alarm arrangement - Google Patents

Abstract

This invention relates to automatic systems control, smoke removal and fire alarm systems. The purpose of the invention is to increase the functional reliability of the device. With a break tse-. For example, if the thyristors 5 (or 7) are opened between the sensors in the sensor groups 2 (or 4), the relay 13 (or 14) is triggered, and the warning lamps 9, 11 (or 10, 12) come on. In the event of a fire, sensors 2 (or 4) of the sensor groups are opened simultaneously and the winding of the actuator relay 8 is energized, relays 13, 14 are triggered, contacts 18 and 20 are closed and time relay 15 is turned on, resulting in a fire alarm and diodes 26-31, control commands can be formed. 1 il. i (L

Description

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This invention relates to automatic controls for smoke removal and fire alarm systems.

The purpose of the invention is to increase the functional reliability of the device.

The drawing shows a circuit diagram of a device for one floor.

The device contains a button 1 and contact sensors 2, a button 3 and contact sensors 4, a thyristor 5, a spreading diode 6, a thyristor 7, p

the second decoupling diodes, the first and second control relays, the current limit on the actuator 8, the signal resistors, the relay actuators 9-12, common for the control relays 13 and 14, the time relay 15 with contact 16, the contacts 17 and 18 of the relay 13 , pins 19 and 20 of relay 14, current-limiting resistors 21–23, and developing diodes 24–31.

The device works in the same way.

When the circuit is broken, for example, between the sensors 2 to the control electrode, the thyristor 5 through the resistor 21 is supplied a positive voltage, the thyristor 5 is opened. This triggers the relay 13, blocks through contact 17, and with its closing contact (not shown) outputs a fault signal to the control room. In addition, the signal elements 9 of this floor and the common signal element 11 are included. By contact 18 of relay 13, time relay circuit 15 is prepared.

When the circuit is broken, for example, between sensors 4, the circuit operates in a similar way, with the only difference that the thyristor 7 opens, the relay 14 is activated, the signal elements 10 and 12 are turned on.

In case of fire, simultaneous opening of the contacts of sensors 2 and 4 occurs. At the same time, the thyristors 5 and 7 open and the winding of the actuator relay 8 is energized, relays 13 and 14 close, contacts 18 and 20 close, and time relay 15 switches on. Closing contacts (not shown) of the time relay 15, a fire alarm is issued to the control room, a fan is turned on, and a command is given, for example, to lower the elevators. By contact 16, relay 15: time is de-energized from all actuators. Signal transmission is possible through diodes 26-31.

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mechanism, characterized in that, in order to increase the functional reliability of the device, a second thyristor, a third spreading diode, another button and a second group of contact sensors are inserted into it, another output of each sensor group is connected to the control electrode of the corresponding thyristor and accordingly through the first and the second current-limiting resistors with a different power supply bus; the cathode of the first thyristor is connected via the first signal element to a single bus power supply and through the first spreading diode. connected to the anode of the second thyristor, and through the second signal element connected to another power supply bus; the cathode of the second thyristor connected to one power supply bus; the anode of the first thyristor through the third current-limiting resistor connected to the other bus and through the actuator relay coil to the output of the device and one the output of the soft contact of the time relay, the other view of which is connected to a different power bus, each control relay is connected in parallel to the source buses and the power supply, parallel to each winding of the control relay, is connected the third and fourth signal element, respectively, the common points of the winding of the first control relay and its closing contact are connected to the anode of the second spreading diode, the cathode of which is connected to the cathode of the first developing diode, the anode of which is connected to the anode of the third of the developing diode, the cathode of which is connected to the common point of the winding of the second control relay and its closing contact, one output of the time relay

to turn on relays 13 and 14 from signal circuits of other floors.

Claims (1)

Invention Formula A fire alarm device containing one button, one output of which is connected to one power supply busbar, and another output connected to the first group of contact sensors, the first thyristor, a time relay, alarm elements, the first and second isolating diodes, first and second control relays, current-limiting resistors, operating relay 0 five 0 five 0 five 0 five mechanism, characterized in that, in order to increase the functional reliability of the device, a second thyristor, a third spreading diode, another button and a second group of contact sensors are inserted into it, another output of each sensor group is connected to the control electrode of the corresponding thyristor and accordingly through the first and the second current-limiting resistors with a different power supply bus; the cathode of the first thyristor is connected via the first signal element to a single bus power supply and through the first spreading diode. connected to the anode of the second thyristor, and through the second signal element connected to another power supply bus; the cathode of the second thyristor connected to one power supply bus; the anode of the first thyristor through the third current-limiting resistor connected to the other bus and through the actuator relay coil to the output of the device and one the output of the soft contact of the time relay, the other view of which is connected to a different power bus, each control relay is connected in parallel to the source buses and the power supply, parallel to each winding of the control relay, is connected the third and fourth signal element, respectively, the common points of the winding of the first control relay and its closing contact are connected to the anode of the second spreading diode, the cathode of which is connected to the cathode of the first developing diode, the anode of which is connected to the anode of the third of the developing diode, the cathode of which is connected to the common point of the winding of the second control relay and its closing contact, one output of the time relay 3UOU98 connected to another bus of the source of the pivot and second control relays of the trace; another vygeod of the time relay is sequentially connected to the same bus by cutting the second closing contacts of the power supply source.