SU964684A1 - Device for testing explosive charge stage - Google Patents

Description

cells that are connected to the anode of three additional diodes, the cathodes of the first of which are connected to the junction points of the switching elements and the igniter batteries and the directions of the cathodes of the second diodes in each group of cells are connected together and connected through the first and second current-limiting resistors to the control electrodes of the first and second thyristors, the anodes which through the break contact of the reset button are connected to the positive terminal of the rectifier, the negative terminal of which is connected to one of the terminals of the relay coils, the other terminals to They are connected respectively to the cathodes of the first and second thyristors, and the cathodes of the third diodes of one group of cells; so they are connected respectively to the cathodes of the third diodes of another group of cells and are connected respectively to the switch terminals, the common terminal of which is connected via the third current-limiting resistor to the control electrode of the third the thyristor, the anode of which is connected to the same power supply bus, the other bus which is connected to the cathode of the third thyristor through the fault finding warning lamp to the same source bus The power supply is connected to one pin of the test contact of the test button, the other pin of which is connected via series-connected second resistors and isolating diodes to the first and second current-limiting resistors and to the common output of the switch, and the short-circuiting contacts of both relays are connected to the corresponding fault lamp and directions) and are connected between the power supply buses, and the switching elements are connected to the same power supply bus through the command delay element.

The drawing shows a schematic diagram of the device for monitoring the performance of the squib cartridge.

The device contains source buses 1 and 2, a rectifier 3 connected to them, a switch 4, a fault finding lamp 5, a test button 6, isolating diodes 7, cells are made on series-connected switching elements 8 and pyro cartridges 9 batteries and pyro patrons 10 directions, delay command element 11, resistors 12, diodes 13-15, current-limiting resistors 16-18, thyristors 19-21, reset button 22, windings of relays 23 and 24, the closing contacts 25 and 26 of which are connected in series with lamps 27 and 28 of the squib fault batteries and iropatronov directions. One test button 6 is connected to bus 1

power supply, and another output - to the resistors 29.

The device works as follows.

In the event of a fire in the protected room, the corresponding switching elements 8 and the command delay element 11 are triggered, which supply power from the power lines 1 and 2 to the igniter 9 and 10. The latter are triggered and turn on the fire extinguishing installation.

8 in open mode via squib

9 and 10 across the bus supply circuit 1 resistors 12 - Diodes 13, which prevent the control circuit from activating when the fire extinguishing unit is turned on - the pyrotechnical 9 and 1 o a safe control current flows, the value of which is determined by the resistance value of the resistors 12. As the resistance value of the pyro cartridges used in the fire extinguishing installations is small (about 0.30 m), then the thyristor control circuits 19 and 20, including resistors 16, 17 and diodes

14, shunted by diodes 13 and squibs 9 and 10. In this case, the thyristor 19 and 20 are disabled. When an open circuit of a pyro cartridge, for example a battery pyro cartridge 9, increases, the current in the thyristor circuit 19 increases, the thyristor 19 opens, a relay 23 is triggered, and with its contact 25 it switches on a lamp 27, which signals a circuit in the battery cutter circuits. Other contacts of relays 23 and 24 can be used if necessary to emit a sound signal. The search for a malfunctioning squib 9 is carried out with the help of switch 4 along the power supply bus 1 circuit - resistor 12 diode 15 - corresponding switch terminal 4 - common switch switch 4 - current limiting resistor 18 - thyristor control electrode 21. In position, switch 4 to which the circuit corresponds The corresponding squib 9, in which the breakage occurred, triggers the thyristor 21 and turns on the fault finding lamp 5. To simplify troubleshooting of the squib, the thyristor 21 is connected to the buses 1 and 2 of the alternating current source. At the same time, the switched on thyristor 21 is switched off when translating switch 4 from one position to the next without using thyristor deactivating devices.

Monitoring the condition of the circuits of the squibs 10 Is carried out by the thyristor 20 and the lamp 28. The operation of the circuit is similar to that described. At the same time, to simplify the device, troubleshooting of the squib 10 is provided with the same switch 4.

Claims (2)

Thus, according to the position of the switch 4 and the lighting of the lamps 5j 27 or 28, the location of the faulty squib 9 or 10 is located. Checking the lamps 27, 28 and 5 and the relay 23 and 24 of the control circuit is done by testing button 6 by applying voltage to the thyristor control electrodes 19, 20 and 21. The reset button 22 serves to bring the device to its original position, i.e. to control the health of the circuits. The invention The device for monitoring the operability of the squibs, containing a power source, the buses of which are connected to a diode rectifier, a malfunction warning lamp, a test button and two groups of cells made on successively connected switching elements and pyropatrons of batteries and directions different from that, in order to increase the reliability of the device, it introduced two relays, resistors, additional diodes, thyristors, fault signals, a switch and a command element The first resistors of the two groups of cells are connected to the same power supply bus; they are connected to the anodes of three additional diodes, the cathodes of the first of which are connected to the junction points of the switching elements and pyro-cartridges of batteries and directions, the cathodes of the second diodes in each group of cells are connected together and connected through the first and second current-limiting resistors to the control electrodes of the first and second thyristors, the anodes of which are connected to the plus terminal of the 1st rectifier, m The terminal terminal of which is connected to one of the terminals of the relay coils, others whose terminals are connected respectively to the cathodes of the first and second thyristors, and the cathodes of the third diodes of one group of cells are connected respectively to the cathodes of the third diodes of another group of cells and are connected respectively to the terminals of the switch, the common output of which is connected through the third current-limiting resistor with the control electrode of the third thyristor, the anode of which is connected to the same power supply bus, the other bus of which through the signal l LPA troubleshooting is connected to the cathode of a third thyristor to one bus power source is connected one terminal of the make contact button sampling, the other terminal of which is connected through a series-connected second. resistors and isolating diodes with the first and second current-limiting resistors and the common output of the switch, and the closing contacts of both relays are connected to the corresponding fault lamp and connected between the power supply buses, and the switching elements are connected to the same power supply bus via the delay commander. Sources of information taken into account in the examination 1. Technical description of gas fire extinguishing installations VPSN-15-72. IN Special Automation, 1972, p. 73. 2. Authors certificate of the USSR 509875, cl. G08 17/08, 1973 (prototype).