SU935883A1 - Device for batching blast-furnace process burden components - Google Patents

Description

DEVICE FOR DOSING COMPONENTS

(54) BLOCK PROCESS

Claims (2)

The invention relates to a weight measuring technique and can be used; It is used for the dosing of the components of the blast furnace smelting batch, when two components of the charge are simultaneously metered into one load receiving bin, and the second component of the charge is started to be dosed after the beginning of the dosing of the first component. A device for multicomponent dosing is known, which contains metering devices, portions setting units, comparison units, load speed determination units, control units for Cl feeders. However, this device can be used only in those systems where each load-receiving hopper is dosed with only one component of the mixture. The closest to the proposed technical essence is a weight batch dosing device containing a load-carrying bunker mounted on a force-measuring sensors, a sensor signal measuring unit, a loading speed determining unit, a comparison unit, aa time determining unit; a unit for determining the magnitude and sign of the error of the current dosing cycle, a self-learning unit, the inputs of the latter being connected to the setting unit, to the unit for determining the magnitude and sign of the error of the current dosage cycle unit, the block for determining the loading speed and the block for determining the shutter closing time, and the output to the setter, the load measuring sensors are connected via the measuring unit of the sensor signals and the comparison unit with one input of the shutter closing time determining unit and with another input of the unit determining the shutter closing time, the second input of the comparison unit is connected to the output of the setpoint generator, the output of the measuring unit of the sensor signals and the output of the loading speed determining unit are connected to the inputs of the defro dividing the magnitude and sign of the current dispensing cycle t2 errors. However, this device is also applicable only in those systems where only one component is loaded into the load receiving bin. The purpose of the invention is to expand the field of application of the device. The goal is achieved by the fact that a device for metering the components of the blast furnace process, containing a load-receiving bin, mounted on load sensors, a block for determining the mass of the metering components and a block for determining the loading speed, the inputs of which are connected to the outputs of the load sensors, actuators and sequentially connected The first setting unit and the first comparison unit, the series-connected switch, the storage unit, the second comparison unit, the integrator and the third unit are entered. the comparison block, as well as the fourth comparison block and the second setter, the first input of the switch is connected to the output of the download speed determining block and to the second input of the second comparison block, and the second output to the first input of the second comparison block, the outputs of the execution units are connected to the corresponding second inputs the switch and the memory block, and the inputs, respectively, with the outputs of the first and third comparison blocks, the output of the block for determining the mass of the components being metered are under; 1, connected to the first input of the fourth comparison block , The second input of which is coupled to the output of the integrator, and vyhodso second input of the first comparator block, the output of the second set point connected to the second input of the third comparing unit. 1 In FIG. Figure 1 shows the flow diagrams: devices for metering the components of the charge of the blast furnace process; in fig. 2 shows the download speed curves,. where denoted by Aj, Ajj are the moments of switching on and off of the first feeder, Bj, Bf) are the moments of switching on and off of the second starter. The device for metering the component of the charge of the blast-furnace process contains a cargo-carrying hopper 1 installed on the metering sensors 2, a unit for determining the mass of the components to be dosed 3, a unit for determining the loading speed 4, a switch 5, a memory unit 6, a second comparison unit 7, an integrator 8, four 1 unit of comparison 9, the first unit setting lO, the first unit of comparison 11, the third unit of comparison 12, the second unit 13, the execution units 14 and 15, c. the composition of which includes blocks 16 and 17 of the control valves with relay devices. The device works as follows. When the material enters the load-receiving bin 1, the signal from the load-measuring sensors 2, proportional to the mass of the material in the bunker, is fed to the inputs of block 3 and block 4, made, for example, as a differentiator, from the output of block 4. material loading speeds are fed to the input of the switch 5 and the input of the comparison unit 7. The other inputs of switch 5 receive signals from the relay devices of blocks 14 and 15. The logic of operation of switch 5 and memory block 6 is as follows. 1.If the first feeder is working and the second one is not working (the graph of Fig. 2a from point AJ- to point Bj |), then signals from this come from the relay devices & tv to switch 5, which connects the input to the second output connected to the output of the storage unit. In this case, the output value of the memory unit 6 is equal to zero (the unit 6 is zeroed out) and the load speed signal is sent to the second input of the comparison unit 7. Then the output signal of the comparator unit 7 is zero. If the first feeder is working and the second one is on (point B-, in Fig. 2a), then switch 5 connects its input to the first output, which is fed to the input of memory 6. The download speed signal at time B is remembered in the memory block 6 and is fed to the second input of the comparison block 7, where it is subtracted from the signal about the current download speed, which came from the output of the block 4 for determining the download speed. Thus, at the output of the comparator unit 7, a signal is received on the loading rate of the second component of the charge (in Fig. 2 a, b the shaded area). 2. If the second feeder is turned off and the first continues to work (point Bj. In Fig. 2a), switch 5 connects its input to the second output, which is connected to the output of memory block 6, block 6 is zeroed and to the second input The comparison unit 7 is signaled about the download speed, and at the output of this block the signal is zero. If the first feeder is turned off, and the second continues to work (point Aj in Fig. 26), then switch 5 does not connect its outputs to the input, the memory unit 6 is zeroed at the second input of the comparison unit 7 and a signal equal to zero is given. Then, at the output of block 7, the signal is equal to the loading rate of the second component of the charge (the shaded area in Fig. 2b from the point to the point Bc). From the output of the comparator unit 7, the signal about the loading speed of the second component of the charge goes to the integrator 8, during which you receive a signal about the current (instantaneous) mass of the second component of the charge. This signal is subtracted in block 9 of the comparison from the signal of the total instantaneous dosing materials coming from the output of block 3. At the output of block 9 of the comparison, a signal is obtained about the current mass of the first component of the charge. This signal is fed to the input of the comparator unit 11, and the signal about the specified mass of the first component from the setpoint device 1O is fed to the other ktt xjro input. The signal from the output of the comparator unit 11 is fed to the input of the executive unit 15 for controlling the gate of the feeder. When equality of signals arriving at both inputs of the comparison unit 11 is reached, the dosing of the first component of the charge stops (point Au in Fig. 2a) The signal of the current mass of the second component of the charge from the output of the integrator 8 enters the input of the comparison unit 12, where it is subtracted the mass of the second component of the charge, which is fed to another input of block 12 compared to the setting device 13. The signal from the output of the comparison unit 12 is fed to the input of the highlight 14. When the signals coming to both inputs of the second comparison unit 12 are equal, the dosage The second component of the charge is discontinued (point B in Fig. 2 a, b.) Similarly, devices can be built for dosing three or more components of the charge into one cargo intake: a bunker. Thus, the introduction of blocks and elements that are not in the known device allows you to expand the scope of the proposed device and use it in the system, where several components of the charge are dosed into one load receiving bin.The simulation of the proposed device shows that its use on a blast furnace of 3000 m l is the economic effect of about 200 thousand. rub / g due povpieni performance by about 1.5%, and quality stability n prime1 iron but at 10%. DETAILED DESCRIPTION OF THE INVENTION A device for dispensing components of a mixture of a blast furnace process, comprising a group receiving unit. a bunker mounted on load sensors, a unit for determining the mass of the components to be dosed and a block for determining the loading speed, the inputs of which are connected to the outputs of the load sensors, executive units and the first unit and the first unit of comparison connected in series, characterized in that, in order to expand the field of application of the device, it contains a switch, a memory unit, a second comparison unit, an integrator and a third comparison unit, as well as a fourth comparison unit and a second a control device, the first input of the switch is connected to the output of the loading rate determination unit and the second input of the second comparison unit, and the second output is connected to the first input of the second comparison unit, the outputs of the execution units are connected to the corresponding second inputs of the switch and the memory unit, and the inputs with the outputs of the first n of the third comparison unit, the output of the mass determination unit of the dosing components is connected to the first input of the fourth comparison unit, the second input of which is connected to the output of the integrator, and you od - with. the second input of the first comparison unit, the output of the second control unit is connected to the second output of the third comparison unit. Sources of information taken into account during the examination 1. USSR author's certificate No. 365582, cl. QOI G 13/28. 1970. 2. USSR author's certificate number 515947, cl. G01 O 13/28, 1975 (prototype). BI L / Fe / g.2 & x w-w Ai