RU1813992C - Automatic burner firing control device - Google Patents

Abstract

Use: for automatic ignition. SUMMARY OF THE INVENTION: A control system (CS) performs repeated ignition cycles in the case when it has not taken place and during burner operation. In this case, the number of repeated starts and the operating time of the control system during ignition before the onset of the flame can vary by matching devices depending on the design features of the burner. In this case, the Plam and Avari signals are issued to the user when the CS is worked out for a given number of repeated ignition cycles. 1 ill.

Description

The invention relates to a power system, and in particular, to devices for automatic control of the ignition of gas-oil burners.

- The purpose of the invention is to increase the reliability of the device in operation.

This object is achieved in that the device comprises an air purge unit and four pulse matching units, the air purging unit being connected to the output of the third power amplifier, the input of the first pulse matching unit connected to the first output of the pulse counter, and the output to the first input of the first trigger, the second the output of which is connected to the first input of the second trigger, the output of the second pulse matching unit is connected to the first input of the third trigger, and the input to the second output

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the pulse counter house, the second input of the OR element, and the second inputs of the first and second triggers, the output of the counter of unsuccessful starts is connected to the input of the fourth matching unit, the output of which is connected to the input of the fourth trigger, the second output of which is connected to the input of the command unit, the second output of the element is NOT connected with the third input of the first trigger and the fifth power amplifier, the output of the command generation unit is connected to the fourth input of the first, third input of the second and second input of the third trigger, the third input m-OR gate and the second input of the counter of failed starts.

The drawing shows a structural diagram of the device.

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The device for automatically controlling the ignition of the burner 1 comprises an ignitor 2, a shut-off valve 3 installed on the gas supply line 4 to the burner 1, a high-voltage unit 5 connected to the igniter 2, a power amplifier 6, which controls the air purge unit 7 of the burner 1, a power amplifier 8, control shut-off valve 3, power amplifier 9, control high-voltage unit 5, power amplifiers 10 and 11, control alarm boards 12 Avari and 13 Plum. Amplifiers 6, 8, 9 are controlled by triggers 14-17, the first inputs of which are connected: trigger-14 - to the matching unit 18, trigger 15 - to the output of the trigger 16, triggers 16 and 17 - to matching units 19 and 20, respectively. The matching blocks 19 and 18 receive signals from the counter 21, the matching block 20 from the counter of failed starts 22. The counter 21 receives signals from the generator 23 to the counter input, the counter of failed starts 22 from the matching block 24. The output of block 24 is also connected to the third the input of the OR element 25 and zero the inputs of the triggers 15 and 16. The second input of the element 25 is connected to the output of the element 26 NOT, as well as the zero input of the trigger 16 and the input of the power amplifier 10. The first input of the element 25 is connected to the output of the shaper 27 teams Start and stop and resetting trig inputs jers 14-16. The input of element 26 is connected to a flame control sensor 28.

The automatic burner ignition control device operates as follows. 8 initial position (after applying the supply voltage) the shut-off valve 3 is closed, the air purge unit 7 does not work, which excludes the supply of air and fuel to the burner 1. At the output of the sensor 28, at the inputs of the triggers 14-16 and counters 21 and 22 - a signal logical unit. At the command of the operator from the shaper 27 Start, a low-level signal passes, unlocking the counters 21 and 22 and triggers 14-16. The counter 21 counts the pulses from the generator 23. When the number of pulses coincides with the settings of the block 18, the trigger 14 is triggered, transmitting a signal to the amplifier 6; purge control unit 7. The burner is purging with air. Triggers 15 and 16 will work similarly, transmitting signals through the power amplifiers 8 and 9 to open valve 3 and turn on the high-voltage unit 5, The burner is igniting. When the sensor 28 is triggered, the low-level signal is inverted by element 26 and blocks the trigger 16, e, through element 25, counter 21.

With non-ignition of the mixture to the settings

of matching unit 24, it will issue a lockout signal for triggers 16 and 15, closing valve 3 and turning off high voltage unit 5. The burner ignition process is repeated. In operating mode, burns when extinguished

The SU flame works similarly.

Claims (1)

SUMMARY OF THE INVENTION A device for automatically controlling the ignition of a burner, comprising a flame monitoring sensor connected via the element is NOT with the first input of the OR element, a pulse generator, a pulse counter, a failed start counter, an ignitor connected through a high-voltage block and a first power amplifier with the output of the first trigger, a fuel shut-off valve connected through a second power amplifier with the output of the second trigger, the third amplifier power connected to the output of the third trigger, the fourth a power amplifier connected to the Avari alarm board and the output of the fourth trigger, a fifth power amplifier connected to the Plam alarm board and an instruction generating unit, characterized in that, in order to increase reliability, it comprises an air purge unit and four pulse matching units, moreover, the air purge unit is connected to the output of the third power amplifier, the input the first pulse matching unit is connected to the first output of the pulse counter, and the output to the first input of the first trigger, the output of the second pulse matching unit is connected to the first input the third trigger, and the input with the second output of the pulse counter, the second input of the OR element and the second inputs of the first and second triggers, the output of the counter of failed starts is connected to the input of the fourth matching unit, the output of which is connected to the input of the fourth trigger, the second output of which is connected to the input of the command forming unit, the second output of the element is NOT connected to the third input of the first trigger and the fifth power amplifier, the output of the command forming unit is connected to the fourth input of the first, third input of the second and the second input, the third trigger, the third input of the element OR and. the second input of the counter of unsuccessful starts.