SU1359573A1 - Automatic control device for process of controlling solid fuel combustion - Google Patents

Abstract

The invention improves the accuracy of the adjustment. The device contains a flue 1, a firebox 2, a dust sensor 3 installed between the cyclone battery 4 and the smoke exhauster 5, a recorder, a fuel consumption regulator 7, an unburned particles return regulator 8, actuators 9.11, drive U of the electric motor of the charging device, electric drive 12. The signal from sensor 3 is fed to the controllers 7 and 8, which act on the actuators 9 and 11. In the case of increased dustiness in the duct compared to normal, the actuator 12 opens the valve and unburned particles returning are put into the firebox. 1 il. (C O) 00 ate CD sd with

Description

The invention relates to the technique of automatic control and regulation of technological processes, namely, devices for automatic control of the process of burning solid fuel in furnaces of boiler houses and drying plants.

The drawing shows a schematic diagram of the device.

The device for automatic regulation of the process of burning solid fuel in the boiler furnace, having a flue 1 and furnace 2, contains a dust sensor 3 installed between the battery cyclone 4 and the exhaust fan 5. The dust sensor 3 is connected via a self-recording device 6 to the fuel consumption controller 7 and to the controller 8 for returning unburned particles The fuel consumption controller 7 is designed as an amplifier of the signal unbalance of the electric bridge of the dust meter and through the first actuator 9 controls the drive 10 of the electric motor loading device made in the form of pneumomechanical spreader. The regulator 8 for returning unburned particles is made in the form of an electromagnetic relay and through the second actuator 11 controls the operation of the electric actuator of the valve 12 located in the zone of high concentrations of dust at the outlet of the exhaust fan 5.

The device works in the following way.

The change in the amount of coal dust in the duct 1 is converted by the sensor 3 dustiness into an electrical signal, which through the recorder 6 enters the regulator. tori 7 and 8. The regulator 7 acts on the first actuator 9. An electrical signal from the executive Editor A. Ogar

Compiled by Y. Bulkin

Tehred L. Serdyukova Corrector I. Erdeyi

Order 6138/39 Circulation 495 Subscription

VSIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Design, 4.

Mechanism 9 is fed to a charging device motor, which changes the amount of fuel supply (with an increase in the signal from the average value, the coal feed decreases and vice versa) to the furnace 2. At the same time, the regulator 8 acts on the second actuator 11 and

further to the actuator 12, which opens the valve and returns unburned particles of coal to the furnace 2 of the boiler room for reburning in the event of an increase in dust content in the flue I compared to

normal or closes the valve and stops returning in case of dust reduction in comparison with the norm.

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Claims (1)

Invention Formula 0 A device for automatic regulation of the process of burning solid fuel in a furnace of a boiler unit, having a gas duct, a cyclone, a smoke exhauster with a pressure nozzle, containing a fuel consumption regulator connected through the first actuator to the drive of the electric motor of the charging device, on a different basis .- so that in order to improve accuracy, it is additionally equipped with a dust sensor installed on the flue after the cyclone, a regulator of the return of unburned particles, a second actuator, a damper, detecting on the discharge port in a zone of greatest exhauster kontsentratsiy.pyli, recorder priQ boron, wherein the input of the latter is connected to the dust sensor, the first output - to the regulator fuel torus, and the second controller through the return torus unburnt particles and second actuator - a damper. five