SU113385A1 - Device for automatic regulation of the firing of ceramic products in ring furnaces - Google Patents

Description

To regulate the firing of ceramic products in ring furnaces, non-automatic devices are usually used that act on the rotary valves and gas distributors installed on gas pipelines.

The proposed device differs from the known ones by the use of an automatic controller consisting of a system of temperature sensors of electronic potentiometers, isodromic consoles, executive electrical mechanisms, regulating bodies and a switching unit of circuit elements.

This controller periodically switches off and on according to a given program individual burner groups, depending on the temperature of the charge in the furnace, and when the furnace operates on two fires, it synchronizes the movement of the lights by means of a selsyn connection between the gas distributors.

Such an implementation of the regulation system makes it possible to automate the control of the movement of fire in a ring kiln and stabilize the technological process of burning products.

The drawing shows a block diagram of the proposed device.

To measure the firing temperature on the kiln / sensor 2 (thermocouple) is installed, which senses the top temperature of the charge. The number of such sensors is equal to the number of rows of burners in the furnace. Sensors through two switching units 3 (for the first and second fire), containing step finders and microswitches, are connected to two self-powered electronic potentiometers 4 and 5 Potentiometers 4, which continuously record the temperature of the zone in which it is turned on gas, equipped with a signaling device YY 113385-2 -

A BOM interlocked with a time relay contact that delays gas switching to the next row of burners until the charge in this place is calcined to the required temperature.

Potentiometers 5 give a pulse to advance the fire to the next position and are equipped with signaling devices and attachments 6 for isodromic adjustment.

The isodromic attachments 6 act on electric actuators 7 connected with regulating bodies 8 (rotary valves on the gas pipeline) To automate the movement of the furnace in the furnace, depending on the temperature of the charge, switching units 3 periodically switch on and off according to a predetermined program of individual groups of sensors 2 and individual rows of burners 9. The switching of the burners is effected by acting on actuators 10, which rotate the gas distribution devices //, made in the form runs with the number of positions equal to the number of rows of burners.

When the furnace is operated on two fires, in order to maintain a constant distance between the fires, a synchronization unit 12 is introduced into the control circuit, made in the form of a selsyne coupling circuit.

When one of the second row lights advances by 2-3 positions, the synchronization unit 12 gives impetus to the actuator 10 of the fire moving at a high speed, providing a delay in the advancement of this fire.

Subject invention

The use of an automatic controller consisting of a system of temperature sensors, electronic potentiometers, an isodromic set-top box, actuators, regulators and a switching unit for circuit elements for adjusting the firing mode of ceramic products in ring furnaces with synchronized movement of lights by means of a selsin connection between the gas | Distributor mi in the case of the furnace at two fires.