SU907371A1 - Apparatus for controlling cupola heat condition - Google Patents

Description

(54) DEVICE FOR REGULATING HEAT REGIME WAGRAN

one

The invention relates to devices for the automatic regulation of the thermal regime of a cupola and can be used in the building materials industry in the production of mineral wool, as well as in the metallurgical industry and in a number of other areas of the national economy.

A device for controlling the thermal regime of a cupola, containing a unit for dosing and charging the charge and fuel, a melt temperature sensor, a melt temperature controller, an air flow sensor connected to the first input of the air flow regulator, the outlet of which is connected to the regulator through an actuator, and differential pressure sensor in cupola charge column 1.

The drawback of the device is that it does not provide the necessary accuracy and reliability of the flow control, since it works on the principle of compensating the heaving effects associated with a change in the resistance of the charge column during the process, adjusting the parameter — air flow to the blast, but does not provide adjusting the value of other parameters, in particular the height of the charge column.

The closest to the proposed technical entity is a device for controlling the thermal mode of the cupola, containing a batch of charge and fuel dosing, a height sensor of the charge, a differential pressure sensor, a computing unit,

10 air flow sensor, melt temperature sensor, melt temperature controller, air flow controller, air flow and melt temperature adjusters, first time relay and regulator f5 with an actuator, one of the inputs of the glu key dosing unit to one of the sensor outputs inBGotnigtbg, the other output of which is connected to one input of the computing unit, the other input of which is connected to the differential pressure sensor20, the outputs of the air flow sensor are connected to the corresponding input of the calculator of the unit and with one of the inputs of the air flow regulator, the other input of which is connected to the air flow adjuster, the output of the air flow regulator is connected to the executive mechanism of the regulator, the temperature setpoint of the melt is connected to one input of the temperature controller of the melt, the other input of which is connected to the melt temperature sensor, the output of the melt temperature controller is connected to the corresponding input of the air flow regulator, and one output of the computing unit is connected via the first time relay a corresponding input controller melt temperature torus 2. However, mechanical movement of the sensor with the height matingly difficulties are, coupled to its location - movement area (working) usually extends through the third placing guild mark, making it difficult to mount the sensor. In addition, the mechanical movement of the sensor can distort its readings due to a misalignment between the sensor and the receiver, thereby reducing the accuracy of the adjustment. The purpose of the invention is to increase the reliability of the device and the accuracy of regulation. This is achieved by the device for controlling the thermal mode of the cupola containing a metering unit for fuel and fuel metering, a sensor for height altitude, a differential pressure sensor, a computing unit, an air flow sensor, a melt temperature sensor, a melt temperature controller, an air flow regulator, flow control devices air and temperature of the melt, the first time relay and the regulator with an actuator, and one of the inputs of the dosage unit is connected to one of the outputs of the sensor of the height of the batch, the other output of which Connected to one input of the computing unit, the other input of which is connected to the differential pressure sensor, the outputs of the air flow sensor are connected to the corresponding input of the computing unit and one of the inputs of the air flow regulator, the other input of which is connected to the air flow setting unit connected to the actuator of the regulator, the melt temperature controller is connected to one input of the melt temperature controller, the other input of which is connected to the temperature sensor the melt temperature, the output of the melt temperature regulator is connected to the corresponding input of the air flow regulator, and one output of the computing unit is connected via the first time relay to the corresponding input of the melt temperature regulator, equipped with a switch and the second and third time relays, and another output of the computing unit is connected to the input of the switch, one output of which is connected to another input of the height sensor of the charge, the other output of the switch is connected via the second time relay to the corresponding input of the sensors Single schihty height, and the other input of unit dosage schihty and fuel through a third time switch connected to the corresponding output switch. The drawing shows the proposed device. The device contains a cupola 1, a computing unit 2, a differential pressure sensor 3, an air flow rate for blasting sensor 5, a pole height sensor 5, a switch 6, a dosage and charge unit and fuel metering unit 7, a time relay 8 and 9, an air flow regulator 10 , the melt temperature controller 11, the air flow adjuster 12, the melt flow adjuster, the actuator 14, the regulator 15, the temperature sensor 16, the melt in the cupola, and the time relay 17. The device operates as follows. When changing the pressure drop in the cupola cup tuber within the specified limits, the automatic loading and batching and fuel batching unit is controlled by a signal from sensor 5 of the batch post installed permanently at a height corresponding to the calculated process conditions. Temperature controller 11 is off. The controller 10 through the actuator 14 and the regulator 15 by the signal of the sensor 4 supports the specified air flow at the blast. When the pressure drop changes by more than a specified value, the computing device 2 calculates the sign of the pressure change using signals from sensors 3 and 4 and instructs the switch of 6 channels to connect the required control channel. In case D ARP, -, i.e. it is necessary to raise the height of the receiving column and keep it at a new level, after compensating the disturbing effect in accordance with the absence of a signal, from the sensor 5, the output device 2 sends a command through the switch 6 channels by loading unit via software relay 9. If it is 1, i.e., it is necessary to reduce the height of the receiving column and keep it at a new level, after compensating for the disturbing effect in accordance with the continuous signal from sensor 5 computing devices o 2 through the channel b switch gives the command to control the unit 7 through the program relay 8 and the sensor 5. In the course of the control, the device 2 registers the signal reversal from the sensor 5, which indicates the position of the height of the bulk column corresponding to the calculated computing device 2 through switch 6.

Claims (1)

Claim A device for controlling the thermal regime of the cupola containing a charge and fuel metering unit, a charge height sensor, a differential pressure sensor, a computing unit, an air flow sensor, a melt temperature sensor, a melt temperature controller, an air flow controller, air and temperature controllers melt, the first time relay and ₁₅ regulatory body with an actuator, and one of the inputs of the dosage unit is connected to one of the outputs of the charge height sensor, the other output of which is connected to one input in the calculation unit, the other input of which is connected to the differential pressure sensor, the outputs of the air flow sensor are connected to the corresponding input of the computing unit and to one of the inputs of the air flow regulator, the other input, which is connected to the air flow regulator, the output of the air flow regulator is connected to the actuator regulator, the melt temperature setter is connected to one input of the melt temperature controller, the other input of which is connected to the melt temperature sensor, output is 5 The melt temperature is connected to the corresponding input of the air flow controller, and one output of the computing unit is connected through the first time relay to the corresponding input of the melt temperature controller, characterized in that, in order to increase the reliability of the device and the accuracy of regulation, it is equipped with a switch and a second and third a time relay, and the other output of the computing unit is connected to the input of the switch, one output of which is connected to another input of the charge height sensor, the other output will switch la is connected through a second time switch with a height corresponding input charge sensor, and the other input of the charge and dosage unit TOP20 Lib through the third time switch connected to the corresponding output switch.