SU1458045A1 - Apparatus for controlling consumption of water at working station for accelerated cooling of rolled stock - Google Patents

Abstract

The invention relates to the production of heat-treated rolled products and can be used in installations for the accelerated cooling of rolled products. The purpose of the invention is to reduce the consumption of cooling water. The device containing the speed sensor 1 and the rental position sensor 2, to the output of which one and the same vibrators 3 and 4 and one vibrators 5 and 6 are connected in series, triggers 7 and 8, sensors 9 and 10 of the arrows, switch 11, relief valve 12 and main valves are entered 13,14 and 15. When the device is operated, the trigger 7 and 8 form 3 to 6 pulses under the influence of the output pulses of the single vibrators, including the relief valve 12 and the main valves 13, 14 and 15. At the same time, switch II, controlled by Fy sensors 9 and 10 arrows 16 and 17, subkey It triggers the trigger 8 only to the main valve connected to the line of the center --- the fundamental cooling into which the rolling enters. Due to this, cooling water during cooling of the rolled product enters only one line of accelerated cooling (19.20 or 21), and in the intervals between cooling of the individual lanes the pump 27 circulates in the circuit 27 - bypass valve 12. 1 sludge. 4i joint venture 00 about joint venture

Description

The invention relates to the production of heat-treated rolled products and can be used in installations for the accelerated cooling of rolled products. "

The aim of the invention is to reduce the flow of cooling water.

The drawing shows a block diagram of the proposed device.

A device for controlling the flow of water contains a speed sensor 1

rolled and gauge 2 position of rolled, one-shot 3 and 4, one-shot 5 and 6, triggers 7 and 8, sensors 9 and 10 position of the arrows, switch 11, bypass valve 12, main valves 13, 14 and 15, arrows 16 and 17, the drive 18 of the rolls, lines 19, 20 and 21 of the accelerated cooler 25 are connected to the second inputs of logic gates And 23 and 24, and the output of the latter is connected to the second input of the main valve 15, The output of the inverter 26 is connected to the third input of the And 24 logic element ,

The device works as follows,

1Q Let the arrows 16 and 17 be set to position AB, Before starting work before switching on the pump 27, the first trigger 7 is set to 1, and the second trigger 8 to O, the output

5 signal and, the first trigger 7 opens the bypass valve 12 and after switching on the pump 7.7 water is circulating through the pump 27 and the bypass valve 12, With the passage of the front

Deni, logical elements And 22 - 24,20 the end of the first rolled strip

the driver 25 is connected to the second inputs of logic elements And 23 and 24, and the output of the latter with the second input of the main valve 15, the Output of the inverter 26 is connected to the third input of the logic element And 24,

The device works as follows

Let the arrows 16 and 17 be set to AB, Before starting work before turning on the pump 27, the first trigger 7 is set to 1, and the second trigger 8 to O, the output

the signal and, the first trigger 7 opens the bypass valve 12 and after turning on the pump 7.7 water circulates through the pump 27 and the bypass valve 12, With the passage of the front

inverters 25 and 26, a pump 27, the output of the rental speed sensor 1 is connected to the first inputs of the first and third single vibrators 5 and 3, the second inputs of which are connected to the output of the rental position sensor 2. The output of the first one-shot 3 is connected to the input of the second one-shot 4 and the first input of the trigger 8, the Output of the third one-shot is connected to the input of the fourth one-shot 6 and the first input of the trigger 7, the second input of which is connected to the output of the second one-shot 6 - c the second input of the trigger 8, the output of the trigger 7 is connected to the first input of the relief valve 12, the second input of which is connected to the output of the pump 27, and the output to the first inputs of the main valves 13 to 15, the outputs of which are connected but with the lines 19-21 accelerated cooling -,

The output of the trigger 8 is connected to the first inputs of logic elements 22 - 24 of the switch 11, the output of the rental position sensor 2 is connected to the second inputs of the first and third single vibrators 3 and 5. The output of the position 9 arrow 9 is connected to the input of the inverter 25 and the second input of the logic element 22 the output of which is connected to the second input of the main valve 13, the output of the sensor 10 of the position of the arrow 17 is connected to the input of the inverter 26 and the third input of the logic element I 23, the output of which is connected to the second input of the main valve 14

0

five

five

the output signal U ,, of the rental position sensor 2 starts the first single vibrator 3, the falling edge of the pulse Uf resets to 1 second trigger 8 and starts the second single vibrator 4, the output signal U of the second trigger 8 goes to the input of the switch 11, and since the arrow 16 is in the AV position and the rolling enters the accelerated cooling line 19, a pulse Uj appears at the output of the switch, the main valve I3 opens and water enters the accelerated cooling line 19. At the moment of termination of the pulse U of the second one-shot 4, the back edge of the pulse and, 0, drops the first trigger 7 into O, and the O and the relief valve 12 is closed,

At the moment of passing the rear end of the rolled strip through the point

0

U signal (-j trailing edge

0

28

The third one-shot one, the leading edge of the pulse Ug sets the first trigger 7 to 1 and starts the fourth one-shot 6, the relief valve 12 opens, and at the time when the pulse U, the fourth one-shot 6 ends, the second trigger 8 is reset to 0, the main valve 13 closes to stop water in line 19 accelerated cooling.

If the next one is rolled, the strip will flow into the accelerated cooling line 20 and the arrow 16 will be transferred to the AC position, the signal Uj through the switch 11 will come as a signal U to the main valve 14 and the cooling water

Pete in line 20 accelerated cooling.

Thus, due to the presence of the triggers 7 and 8, the sensors 9 and 10 of the arrows, the switch 11, the bypass valve 12 and the main valves 13, 14 and 15, the water flow control mode is organized, in which water circulates through the pump in the absence of rolled metal in the accelerated cooling section 27 and the bypass valve 12, and in the presence of rolled products in one of the lines (19, 20, 21) of accelerated cooling, water flows through one of the main valves 13, 14, 15 only to this line, which contributes to reducing the flow of cooling water.

Claims (1)

Invention Formula A device for controlling the flow rate of water in the area of accelerated cooling of the steel, mainly when winding strips on several coilers, containing speed detectors and positioning P454 neither rolled, four single vibrators, the first inputs of the first and third single vibrators connected to the output of the rolling speed sensor, and the second inputs to the output of the rolling position sensor, the output of the first single vibrator connected to the input of the second single vibrator, and the third output from the fourth input, characterized in that, in order to reduce the flow of cooling water, it is equipped with two triggers, two position sensors, switches, rum, bypass and three main valves; the inputs of the first trigger are connected to the outputs of the second and third single-shot; and the output is connected to the bypass valve, inputs The second trigger is connected to the outputs of the first and fourth single-shot drives, and its output is connected to the first input of the switch, to the other two inputs of which are connected the alarm clock arrows, three switch outputs are connected to the inputs of the bypass valves, respectively.