SU1183543A1 - Device for monitoring intensity of blast furnace run - Google Patents

Description

The invention relates to ferrous metallurgy, in particular, to the domain of production, and can be used in feed systems to control the progress of the blast furnace. five

The purpose of the invention is to improve the accuracy and noise immunity.

The drawing shows a block diagram of the proposed device.

The device contains a sensor 1 through 1® dachas, a block 2 of delays, a distributor 3, a block 4 of zeroing, elements 5 of zeroing, elements 6 of the count, a counter 7 of memory 8, a generator of 9 pulses, a converter 10, a secondary 15 device 11, a block 12 of control innings, display unit 13, static setting unit 14.

The principle of operation of the device corresponds to the formula for calculating the linear 20 smoothing midpoint. Since the best smoothing is obtained for mid-points, the number of measurements should be chosen odd, and the groups of points should be selected sliding along the row, i.e. 25 uses a moving average model.

For example, to smooth five points

Ν. = ^ (Ν ₅ + Ν ₄ + Ν ₃ + Ν ^ Ν _ή ), ³⁰

where N ^Ν 5 " ^Ν 1 signal corresponding to the evaluation of the smoothed value (the time interval between two successive feeds), after the 5th filing;

signals corresponding to the current time intervals between the 4th and 5th, 3rd and 4th, 2nd and 3rd, 1st and 2nd, 0 and 1st feeds.

where £ ₀ is the generator frequency; 45

ί - serial number.

The device works as follows.

The signal of the sensor 1 innings is fed to the input of the delay unit, from the output of which the signal is fed to the input of the distributor 3, as well as to the input of the zeroing unit 4. At one of the outputs of the distributor 3, for example, the first signal appears, arriving at 55, the first inputs of the corresponding elements And 5 and 6. The second inputs of the elements And 5 receive a signal from the output

unit 4 reset. At the output of the first element And 5, a signal appears, which arrives at the installation input in the "0" of the first counter 7 of the memory block 8, and its content is reset. This counter is prepared for pulse counting. The pulses from the generator 9 pulses to the second inputs of the elements And 6, appears at the output of only the first element And 6, the first input of which has a signal from the distributor 3. Thus, this counter is filled with pulses before the arrival of the 2nd signal of the sensor 1 feed, which switches the valve 3 to the next counter 7. The order of resetting and filling the next counters 7 of the memory block 8 when the second and subsequent signals from the sensor 1 of the feeds do not * change.

From the outputs of memory block 8, the signals in binary code are fed to the converter 10, and from its output the analog signal goes to the first input of the secondary device, to the second input of which a signal comes from the sensor 1 of feeds, allowing registration of the signal from the converter 10.

Simultaneously with the filling of each of the counters 7, the pulses of the frequency generator 9 are fed to the second input of the control unit 12 of the handles. If the sensor 1 feeds pulses through the intervals of time less than the interval N ^ set in block 12 of the feed control, there is no pulse at its output (i.e., each pulse

Sensor 1 innings zeroes block 12 control innings, acting on its first input, passing through blocks 2 delays and 4 zeroing. If, prior to the arrival of the next impulse of sensor 1 of innings, the unit 12 of feed control (i.e. Ν ^ *) operates, a pulse appears on its output that switches distributor 3 to the next channel to fill the next counter 7 of memory 8. At operation of the block of 12 control of giving on the filled account

ke 7 is Ν · = Ν ^, i.e. in the absence of feeds, counters 7 are alternately filled with a time interval value equal to Ν *. The time interval is chosen so that Ν * ^ Ν _{Μλκ {} ., Where Ν _{ΜΜΚ (;} ~ is the maximum time interval between the feeds during the operation of the furnace. '

3

The outputs of the distributor 3 is also connected to the inputs of the display unit 13,. serving for digital indication of the number of the counter 7 of the memory block 8.

Block 14 static settings ensures the configuration of the entire device in a static state. The operator can transfer to the state ”1” or “O” all counters 7 at the same time for checking and adjusting the secondary device 10 ra 11, for this he must give the signal 5 and 5 _in , respectively. The operator can alternately fill counters 7 to check them serviceability and

1183543

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the calibration of the secondary device 11, for which he must give a signal B _p simulating the operation of sensor 1 of feeds And a signal _{P p} simulating the operation of the frequency generator 9.

The proposed device will improve the accuracy and noise immunity of controlling the intensity of the blast furnace stroke, in addition, you can quickly monitor the intensity of the blast furnace stroke. The use of the invention contributes to the improvement of the furnace and improve its performance

Claims (2)

A DEVICE FOR CONTROLLING THE INTENSITY OF A DOMAIN FURNACE, containing a feed sensor, a memory unit, a converter and an intensity recorder connected in series, a zeroing unit whose input is connected to the output of the feed sensor and the output is connected to the second outputs of the memory block counters, characterized in that in order to improve accuracy and noise immunity, it is equipped with an additional counter, a frequency generator, a frequency divider and a distributor, with the first input of an additional counter connected to the output of the generator and the second input is connected to the output of the reset unit, the output of the additional counter is connected to the input of the frequency divider, the output of which is connected to the inputs of the distributor and the resetting unit. 00 00 SL 00 > one 1 183543 2