SU1035077A1 - Device for mating flows of bulk materials in production process - Google Patents

Abstract

CONSTRUCTING AGREEMENT OF FLOWS OF BULK MATERIALS IN THE TECHNOLOGICAL PROCESS, containing a receiving bunker with a feeder, a drive, weighing instruments, an intermediate capacity, a hopper with a feeder, a drive and a sensor for monitoring its degree of filling, and a user of the drive, from which it received, with a feeder, drive and sensor for controlling its filling level and a consumer of the drive, from which it received, with a feeder, drive and sensor controlling the degree of filling and the consumer about the drive, from which it received, with a feeder, drive and sensor controlling the degree of filling and the consumer about the drive, from a storage tank with a feeder, drive and sensor controlling the degree of filling and the consumer about the drive, from the storage tank, the feeder, drive and sensor controlling the degree of filling the purpose of poaching a quality agglomerate, increasing the service life of the equipment due to its more rhythmic operation and increasing the productivity of sintering clay, it additionally contains a pulse generator, an average neither the parameters, the unit for calculating the values of fluxes of flows, the predictor of the flow of material into the hopper, the predictor of the material level in the hopper, the predictor of losses due to the deviation of the flow value from the given predictor of losses due to the deviation of the material level s of the loading bunker from the given over time, total losses, unit for finding the derivative of integral total losses over the values of flows, unit for checking the option of future flows for optimality ,. the first electronic key and the control unit for the drives of the feeders and the material consumer, the outputs of the weighing instruments, the sensor controlling the filling level of the hopper and the pulse generator are connected respectively to the first, second and third inputs of the averaging unit of parameters, the first and second outputs of which are connected respectively to the first inputs of the arrival predictor the material to the feed hopper and the material level predictor in the feed hopper, the second inputs of the material intake predictor A common bunker and material level predictor in the loading bin are connected to the first second SL of the calculator of the unit for calculating values in stream flow, respectively. The third input of the material level predictor is connected to the output of the input predictor, the material to the loading bin, the second output of the unit for calculating the values of The flows are also connected to the first input of the loss predictor due to the deviation of the flow value from the set of 100 SPN, the output of the material level predictor. In the loading hopper of the connections to the first input the predictor of losses due to deviations of the material level in the loading core from a given, the second inputs of the predictor of losses due to deviations of the flow from the specified ones and the predictor of losses due to deviations of the material level in the loading bunker from the specified ones are connected respectively to the first and second outputs of the setter, outputs the predictor of losses due to the deviation of the flow rate from the given one and the predictor of losses due to the deviation of the material level in the loading bin from the specified one are connected respectively to the first and second The inputs of the definition block are integral. timed total losses, per

Description

The high and low outputs of which are connected to the inputs of the unit for finding the derivative of the integral total losses in terms of the fluxes and the unit for checking the variant of the future fluxes for optimality, the first and. the second outputs of the unit Finding the derivative of the integral total losses in terms of the fluxes are connected to the first and second inputs of the first electronic key, the third input of which is connected to the output of the checking unit of the future streams option for optimality, the output of the checking block, future streams for optimality, first and second the outputs of the first electronic key are connected respectively to the first, second and third inputs of the block for calculating the values of future flows, the first and second outputs of which are connected to the first and second the inputs of the drive control unit of the feeders and the consumer of the material.

2.-The device according to claim 1, of tl and 1 ay, so that the block for calculating the values of future streams contains a one-shot, three keys, a logical element NOT, a logical element AND, a memory block, four multiplication blocks, two adders, a constant-coefficient sensor, and a cycle time adjuster of the next version, the one-shot output connected to the first input of the second key, the first and second outputs of which are connected to the first and second memories of the memory block, the first and second outputs of the memory block

connected to the first output of the setpoint controller, and the outputs of the first and second multiplication units are connected to the first inputs of the first and second adders, respectively, the second inputs of the first and second totalizers are connected respectively to the outputs of the third and fourth multiplication units, the first inputs of which are connected to the outputs the third and fourth keys, respectively, and the second inputs - with the second output of the constant coefficient setter; the first inputs of the third and fourth keys are connected to the output of the var test block Anta of future flows. On optimality, the second inputs of the third and fourth keys are connected respectively to the perylm and the second outputs of the block for finding the derivative of the integral total losses ;, the outputs of the first and second adders are connected respectively to the third and fourth inputs of the memory block, and also to the second inputs respectively, the predictor of the material in the hopper and the predictor of the material level in the hopper; the fifth and sixth inputs of the memory block are connected to the outputs of the logical

elements AND and NOT, the first and second inputs of the logical element AND are connected respectively with the output of the unit of the calculation cycle time of the next option and the output of the test block of the future streams option for optimality, the output of which is also connected to the input of the logical element NOT.

 / .. ... one ; , -, The invention relates to a system of process control | Sami, associated with the movement of flows of bulk materials and can be used, for example, in ferrous and nonferrous metallurgy.

The task of matching material flows arises from a change in one or more flows or due to unexpected fluctuations in the rate or amount of material flows. These fluctuations are caused, on the one hand, by the inaccuracy of flow measurement, and on the other hand, by a change in the properties of the material. For example, if the value of one stream in technology. Since the process is measured in units of volume, the fluctuations in the bulk mass of the material lead to a mismatch of flows.

- a device is known for approving;; Wi charge capacities and

a sintering compartment which, according to the charge level information in the receiving bins, controls the consumption of the leading component of the charge Cl.

 However, due to a large transport delay, the adjusted charge reaches the sintering compartment, when the situation may already change and the arrival of the new charge will not correspond to the required flow rate.

It is also known a device that provides for the installation of additional supply paths for shredders and ensures the control of the flow rate of the driving component by the dosing system at a signal about the weight of the charge loaded on the sinter machine G2}.

The said device does not compensate for a large transport delay between the charge and the sintering compartment. Closest to the proposed technical essence and. The achieved result is a device containing a receiving hopper with a drive, house, weighing equipment, an intermediate tank, a drive tank, a hopper with a feeder, a drive and a sensor for monitoring its filling level and a consumer with a lead material. special distribution distributor SZ device. However, this device envisages the elimination of transport lag only on the path of supply of the charge in the sintering compartments and does not solve the problem of coordinating the productivity of the charge and sintering compartments. In addition, the device can function normally only if it is supplied from the receiving bunkers of a deliberately greater consumption of the charge, G.e, imposes additional restrictions on the charge supply control system, thereby narrowing its range (operation / which ultimately leads to large economic losses The purpose of the invention is to improve the quality of the sinter, to increase the life of the equipment due to its more rhythmic work and to increase the productivity of the glove machine. matching flow of bulk materials in the technological process, containing a receiving hopper with a feeder, a drive, a weighing measure BI, an intermediate tank, a loading hopper with a feeder, a drive and a sensor controlling its filling and a consumer of the driven material, additionally contains a pulse generator, a ycpejcj unit parameters, block 1 of calculating the values of future flows, the predictor of material flow into the hopper, the forecast of the level of Ms1 material in the hopper, the predictor of losses due to the deviation nor the magnitude of the flux from the preset, n & tkr. deviations of the material level in the loading bunker from the given one / unit for determining integral time-integral total. loss of flow values unit for finding the derivative of integral total 6i7tOK checks for future flows for optimality, first electronic key and feeder drive control unit and consumer lead material, the outputs of the weighing sensors, the sensor controlling the degree of filling of the hopper and the pulse generator are connected respectively to the first, second and third inputs of the block neither the parameters, the first and second outputs of which are connected respectively with the first inputs of the predictor of the material inlet to the hopper and the predictor of the material level in the loading bin; the second inputs of the predictor of the material in the hopper and the predictor of the material level in the loading bunker are connected respectively to the first and second outputs of the computing unit: the values of future flows, the third input of the material level predictor is connected to the K1 INPUT of the material flow predictor in the loading block nker, the second output of the calculating unit for future flows is also connected to the first input of the loss predictor due to the deviation of the flow value from the given one, the output of the material level predictor in the feed bin is dinene to the first input of the loss prediction due to the deviation of the material level in the loading bin from the specified In the second case, the inputs of the loss predictor due to the deviation of the flow value from the target one and the loss predictor, as well, due to the deviation of the material level in the boot bin from the preset one, are connected respectively to the first m and the second outputs of the setter, the outputs of the predictor of losses due to the deviation of the flow rate from the setpoint and; the loss collector due to the deviation of the material level in the loading bunk. From the setpoint are connected respectively with first second inputs of the unit for determining the integral of total integral losses, the first and The second outputs of which are connected to the inputs, respectively, of the unit for finding the derivative of the integral total losses in terms of the fluxes and the unit for checking the option of future currents for optimality, the first and second outputs the unit for finding the derivative of the integral total losses in terms of the fluxes is connected to the first and second inputs of the first electronic key, the third input of which is connected to the output of the test block of the future streams option for optimality, the first and second outputs of the first electronic key are connected respectively to the first, second and third inputs a unit for calculating the magnitude of future flows, the first and second outputs of which are connected to the first and second inputs of the drive control unit of the feeders and the material consumer. In addition, the block for calculating the magnitude of future flows contains a single key, three keys, a logical element NOT, a logical element AND, a memory block, four multiplicators, two adders, a generator of postolyny coefficients, and a generator of the time for calculating the next option, and

the one-shot output is connected to the first input of the second key, the first and second outputs of which are connected to the first and second inputs of the memory block, the first and second outputs of the memory block are connected to the first output of the set constant factors, and the outputs of the first and second multiplication blocks are connected to the first inputs The first and second adders, respectively, the second inputs of the first and second adders are connected respectively to the outputs of the third and fourth multiplication units, the first inputs of which are connected to the outputs, respectively, t The second and fourth keys, and the inputs to the second output of the constant coefficient setter, the first inputs of the third and fourth keys are connected to the output of the test block of the future streams option for optimality, the second inputs of the third and fourth keys are connected respectively to the first and second outputs of the derivative finding block total losses, the outputs of the first and second adders are connected respectively to the third and fourth inputs of the memory unit, as well as to the second inputs of the predictor, respectively audio material in the hopper and the predictor layer of material in the hopper, fifth and sixth inputs of the memory unit are connected to the outputs of the AND gates, respectively and not the first. and the second inputs of the logical element I are connected respectively to the output of the sensor time of the calculation cycle of the next option and the output of the check block of the future streams option for optimality, the output of which is also connected to the input of the logical element NOT.

Figure 1 shows a block diagram of the device; Fig. 2 is a block diagram of the internal structure of a block for calculating values of future streams;

The device contains a receiving ker 1, a material supply path equipped with feeders 2 with drives 3 and weighing instruments 4, intermediate tank 5 with drive b, hopper SZB 7) equipped with feeder 2 with drive 3 and sensor 8 for monitoring its degree of filling, consumer 9, equipped with a drive 10, averaging unit 11, a unit 12 for calculating values of future Streams, a predictor 13 for entering a material hopper, a predictor 14 for a material level in a hopper, a predictor 15

1 loss due to the deviation of the flow rate from the target, the predictor 16 losses due to the deviation of the material level in the hopper from the given leg, unit 17 for determining the integral | Hoh over the total loss time, block 18 for finding the derivative of the total total loss for the flow values ,, block 19 checks the option of future flows for optimality, the first key 20, the drive control unit 21 of the 3 feeders and the material consumer drive 10.

The block 12 for calculating the values of future flows (FIG. 2 contains a one-shot 22, a second key 23, a setpoint generator 24 of the next calculation cycle time, a logical element 25 And, a first memory block 26, first, second, third and fourth blocks 27, 28, 29 and 30 multiplications, the third and fourth keys 31 to 32, the first and second adders 33 and 34, the logical element NOT 35 and the master of 36 constant coefficients.

. The parameter averaging unit 11 (Fig. 3) contains the second memory block 37 and the averaging unit 38 of the flow values.

Block 29 verifies the option of future flows for optimality (Fig. 4 contains the third memory block 39 of the previous forecast of total integrated losses, the third adder 40, element. 41 comparison, the analog code converter 42. The position 43 denotes the pulse generator.

The device works as follows.

In the preparation and processing compartments, on the material supply path and in the intermediate tank, the parameters characterizing the course of the technological process are continuously and automatically measured: the flow of material from the preparation compartment and the level of the material in the loading hopper. At each discrete moment of time {And -, 1 ..,), the signal coming from the pulse generator (GI, in block 11 averages the measured values for the period PI-f and the parameter values.

Optimization inputs are the averaged past fluxes from block 11, and the output is the optimal material input from the preparation department and the material consumption to the processing department in the prediction interval f And, And + vn 3 where M is the depth of prediction of losses.

At the initial moment of time, the initial variant is set for calculating the variants of the flows in block 12, for which, for example, the predetermined average values of the flows 2 and H can be chosen. These predetermined values through the second key 23, controlled by a signal from a single vibrator 22, generating a signal of a certain duration, corresponding to the time of the first calculation cycle, arrive at the second inputs of the material arrival predictor 13 in the loading hopper and the material level predictor 14 in the loading hopper, as well as at the first and the second inputs of the memory block 26, where it is stored until the next second calculation cycle, moreover, the control A) the SCH signal and the readout of the information stored by the first block 26, in the case of a non optimal variant and for the "next 1 cycle, the calculation comes from block 19 of checking the variation of future flows for optimality / The calculation of the next {second and subsequent variants) is carried out according to the following scheme. After the end of the first cycle. calculating future variants of streams and checking them for optimality, from the output of block 19 for checking the variant of future streams. The logical 1 signal is removed for optimality (the first variant is not optimal), allowing the next variant to be calculated (signal to the fifth input of the first memory block 26 and the first inputs of the third and fourth keys 31. and 32. block 12 calculate the values of future flows) and the openers first key 20 to skip the derivatives of the integral total losses obtained in block 17 on the options for future flows of intake and flow, respectively etstvenno, the second inputs of the third and fourth keys 31 and 32 of the block 12. The second cycle starts calculating embodiments streams. . In block 12, the next version of the future values of flows is given by formulas. Oj, (bQ, I,, where IC ,, are the past versions of the values of future flows of intake and flow, respectively (from memory block 26) for the second calculation cycle, these are Z and N, y are the next versions of the values of future flows of input and flow, respectively / GK, QK are the derivatives of the losses and the magnitudes of the residuals for the input and flow currents, respectively; ot, i are the specified values. At a signal of logical 1, removed from the output of block 19, from the first block 26 the memory is removed from the previous options potosh, enrolled in the first block 26 memory from the output of the second key a 23. Then the values of the previous streams Z and Ы are multiplied in the first and second blocks 27 and 28 multiplied by a constant factor 0, and from the output of the last value o (. 2 and odN, received 1 g at the first inputs of the first and second adders 33 and 34, respectively - of course, the second inputs of which come from the outputs of the third and fourth blocks 30 multiply the values pQj and Ib. Cc, respectively, and the derivatives of the integral total losses and Q are fed through the second inputs, respectively, of the third and fourth keys: and 32 (the keys are opened with a logical 1 signal from the output Lok 19 when calculating the first embodiment is not optimal), the first inputs of the third and fourth blocks 29 and multiplier 30, the second input of which receives a constant factor f. in the first and second su 1mator ah, the successive (for the second variant of the calculation) values of the future inflow and consumption flows of the material, respectively, are obtained. Then, these obtained values are transferred to the third and fourth inputs of the first, memory block 26, and to the second inputs of the material arrival predictors 13. into the feed hopper and level 14 material in the feed hopper. If the flux values obtained and at the second cycle of the calculation are not optimal, then all the operations described above are repeated until the optimal flux variants are obtained. In the case when the next va) indicator in block 19 is recognized as optimal, then the block of calculation of the next variant is disconnected from the corresponding signal and the supply of derived loss values from block 18, i.e. The block 19 is fed to these blocks - O. At the same time, the opposite signal 1 (obtained at the output of the element NOT) is fed to the sixth input of the memory block 26, from which the stored optimal input and flow variant is fed to the block 21 of the drives for controlling the input and material flow. In block 13, predictions are made regarding material availability from the preparation compartment to the feed hopper. For this purpose, the input values of the material 13 from the preparation compartment (from block 11 and the option of future receipt from memory block 26 of block 12) are fed to the input of block 13. The forecast of material receipt in the hopper during the C, I + 1J prediction interval is determined

according to odds, mule.

.)).

- Prokhnoz admission

Where

mi

material in the loading bunker at the moment

(пи и). ;

and . - receipt of material J from the preparation department, when IS j is supplied from block 11, and from block 12; jrQ, f, .t; 4i; - given numbers l

3,017

VfJ. "The value is determined by the inertia of the process.

In block 14, a prediction is made of the level of material in the feed bin .re on the C interval,

To do this, the inputs of block 14 are supplied with the past value of the material level in the loading bin from block 11, the forecast for the intake of material into the loading bin from block 13 and the variant of future material consumption from i block 26 of block 12 memory. Forecast; the level of material in the ST is carried out according to the formula

.-t., 1, ... M, /

fv

where the prediction of the material level in the hopper at the (-th moment is obtained from block ll) i

7 - enrollment forecast

I41 material in the ST (from block 13);

- variant of the consumption of the V141 material at the time ((from the block 26 of the memory of block 12). Y is the specified coefficient

Coefficient T; is the reciprocal of the bulk density of the material. It was introduced due to the fact that the material intake in BZ - Z is measured in units of mass, and the consumption of material is in units of mass. X, c. -L-in volume units. Level jt / y ,. is thus obtained in units of volume.

 In block 15, on the basis of the future pac- option obtained in block 12, the progress of the material in the processing department determines the future forecast by Tejjb due to the deviation of the consumption of the consumed material from the nominal one. The specified forecast is calculated by

 1в1Х- „4),

.-.

material consumption option

"4-1 in the processing department Cl 0,1,.,. M) obtained from block 12;

X - given nominal consumption of consumed mainland;

A, ADB are positive parameters determined by the properties of the TP.

In block 16, on the basis of the material level obtained in block 14 of schneognosis in the loading bunker, the prediction of future losses is determined because of the level of material in the loading bunker from the nominal one, taking into account the likelihood of overfilling the bunker. This forecast is obtained by the formula.

F uU w vi-Wo); w "(fe

 to, WM.sWo, i-0, i, ... M, where J is the prediction of the material level

in the bunker, at the moment (and,. Wo is the nominal nominal level of the Material in the bunker, are the positive parameters determined by the flow properties.

In block 17, the losses found in blocks 15 and 16 are summed and integrated over time. The overall loss prediction is determined by the formula

) ,,

The resulting loss prediction is a function of the option for future receipt of Material from the preparation department and the future consumption of material in the processing department, which are obtained in block 12.

In block 18, which is a differentiator, the prediction of the total integral loss F obtained in block 17 is carried out according to options for future flows of income and expenditure, respectively.

In block 19, a test of the option of future flows for optimality is performed. IF during the transition from the previous version of the future flows to the current forecast, the loss was reduced slightly (the difference is less than the predetermined small positive number A, then the current version is considered optimal and a corresponding signal is generated - a logical O, which, entering the block 12, prohibits the calculation of the next variant, and does not pass the signals from block 18 through the first key 20 to block 12. After this, the current variant is transferred from the prediction block S the block 21 controls the receipt and material consumption drives .

If the comparison result is the opposite of the difference between the previous and current loss forecast values greater than the specified positive number), the search continues for the OPTIONAL option — for which, using the 12 signal, the logical 1 resolves the calculation of the next HTF in block 12 and passes the signals from block 18 through key 20 in block

Thus, block 19 can be implemented as a third memory unit 39 connected in series, a third adder 40, an arithmetic comparison element 41, and an analogue converter — Code 42. At adder 40, the difference in loss prediction in the previous one (removed from memory block 39) and current moment, which is then compared with a given positive number in the reference element 41. In m 4ent | 1, when analyzing the first option, instead of predicting the loss at the previous time, a large positive number B is supplied to the memory unit 39, so that the result of comparison

for the first option, it would certainly lead to a permission to calculate: the next option. The output of the value of the comparison element 41 is indicated by the converter of the Angsho-code 42 into the logic signals 1 or O.

The device allows to ensure a consistent rhythm of the operation of the sintering and charge sections of the sinter alumina, to prevent blockages and breaks in the batch flow, segregation and freezing in bunkers. As a result, the quality of sinter will increase by 15-20%, the equipment life will increase due to its more rhythmic work, but ("productivity of sintering stations will increase by 1-1.5% by reducing economic losses.

The economic effect of using the device will be 150 thousand rubles. per year per sinter machine. / 7-

0fff, f igt, fff / y

FIG. J

3/7

Claims (2)

DEVICE FOR AGREEMENT OF STREAMS OF BULK MATERIALS IN THE TECHNOLOGICAL PROCESS, comprising a receiving hopper with a feeder, drive, weight meters, an intermediate tank, a loading hopper with a feeder, drive and a sensor for monitoring its degree of filling and a consumer of material about the drive., Characterized in that it improves the quality of sinter, increase the service life of equipment due to its more rhythmic operation and increase sinter machine productivity, it additionally contains a pulse generator, averaging unit for pairs meters, a unit for calculating the values of future flows, a predictor of the flow of material into the loading hopper, a predictor of the level of material in the loading hopper, a predictor of losses due to deviation of the flow from the set value; a loss predictor due to a deviation of the material level in the loading hopper from the predetermined one, a unit for determining time-cumulative total losses, a unit for finding the derivative of integral total losses in terms of flows, a unit for checking the variant of future flows for optimality, - the first electronic key and control unit for drive drives the consumer of the material, and the output of the load measuring devices, the sensor for monitoring the degree of filling of the loading hopper and the pulse generator are connected respectively to the first, second and third the inputs of the parameter averaging block, the first and second outputs of which are connected respectively to the first inputs of the material flow predictor in the loading hopper and the material level predictor in the loading hopper, the second inputs of the material flow predictor in the loading hopper and the material level predictor in the loading hopper are respectively connected to the first second 'outputs of the unit for calculating the values of future: future flows., the third input of the material level predictor is connected to the rial output and the receipts, by mating the loading hopper, of the second block of calculation of the bopotok values are also connected to the first input of the loss predictor due to deviation of the flow value from the set one, the output of the material level predictor in the loading hopper is connected to the first input of the loss predictor due to deviation of the material level in the loading hopper from the given one, the second inputs of the loss predictor due to deviation of the flow value from the predetermined one and the loss predictor due to deviation of the material level in the loading hopper from the given one are connected to accordingly, with the first and second exits behind the sensor, the outputs of the loss predictor due to deviation of the flow value from the preset and losses predictor due to deviation of the material level in the loading hopper from the preset are connected respectively to the first and second inputs of the time integral total determination unit losses, lane 1035077 and the second outputs of which are connected * to the inputs with, respectively, the unit for finding the derivative of the integral total losses with respect to the values of the flows and the verification unit for the optimal • future flows nost, first and. the second outputs of the unit for finding the derivative of the integral total losses with respect to the values of the flows are connected to the first and second inputs of the first electronic key, the third input of which is connected to the output of the unit for checking the future flows for optimality, the output of the unit for checking the future flows for optimality: first and second the outputs of the first electronic key are connected respectively to the first, second · and third inputs of the unit for calculating the values of future flows, the first and second outputs of which are connected to the first and second inputs ladies control unit drives feeders and consumer of the material. 2.-The device according to claim 1, with the fact that the unit for calculating the values of future flows contains a single vibrator, three keys, a logical element NOT, a logical element AND, a memory block, four multiplication blocks, two an adder, a constant coefficient adjuster, and a cycle time adjuster. for calculating another embodiment, the output of the one-shot being connected to the first input of the second key, the first and second outputs of which are connected to the first and second inputs of the memory unit, the first and second outputs of the memory unit I · · are connected to the first output of the constant coefficient generator, and the outputs of the first and second multiplication units are connected to the first inputs of the first and second adders, respectively, the second inputs of the first and second adders are connected respectively to the outputs of the third and fourth multiplication units, the first inputs of which are connected to the outputs the third and fourth keys, respectively, and the second inputs are with the second output of the constant coefficient generator, the first inputs of the third and fourth keys are connected to the output of the verification unit As future flows are optimized, the second inputs of the third and fourth keys are connected respectively to the first and second outputs of the unit for finding the derivative of the integral total losses ;, the outputs of the first and second adders are connected to the third and fourth inputs of the memory block, as well as to the second inputs, respectively, of the arrival predictor material in the loading hopper and the material level predictor in the loading hopper, the fifth and sixth inputs of the memory block are connected to the outputs of the logical AND and NOT cops, the first and second inputs of the AND gate soediveny respectively with the setpoint output time calculation cycle of another embodiment and output unit checks embodiment future flows for optimality, whose output is also connected to an input of the NOR gate. ’ 1 ' . .