SU1278350A1 - Device for automatic control of load distribution between n-parallel connected apparatus of soda ash production departments - Google Patents

Abstract

The invention relates to a device for automatically controlling the load distribution between n devices connected in parallel, can be used in petrochemicals. chemical, food and chemical industry and allows to reduce the expenditure coefficients of energy flow (L C

Description

by increasing the accuracy of maintaining optimal load distribution. The device contains, for each soda ash production apparatus 1, a flow control loop for the processed product including a flow sensor 4, a controller 12, an actuator 13 and a pressure correction circuit.

On the device, including the sensor 8, the sensors 8, the controller 7 connected to the controller 12, the product consumption sensor K through the adder 3 and the common correction controller 5 are connected to another adder 10, the output of the latter is connected to the minimum selection block 9, and the input with the regulator 7 through the averaging block 11, 1 slug.

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Inventor-je relate to devices for automatic control of load distribution between parallel controllers and devices and can be used in chemical, petrochemical and food .soft industry in the production of soda ash, with distributed} W load between soda carbonated, absorption and distillation columns.

The purpose of the invention is the condensation of the flow paths of the energy flows due to the accuracy of maintaining the optimal load distribution.

Pa drawing presents block diagrams

devices.

The device contains devices 1 for the production of capped soda, a common collector 2 of the product being processed, the first adder 3, sensors 4 for the flow of 1 x streams, 1 D7 regulator 5 corrections, a thorn 6 tasks 1 and the total load of the department, private regulators 7 corrections, sensors 8 ENS-SIZE parameters of the apparatus, minimum selection blocks 9, second adder 10, averaging block 11, regulators 12, and executive -mechanisms 13 of the feed of processed streams and blocks 14 of scaling.

The device works in the following way.

Processing material stream flows to each device 1 of the common collector. 2. The actual total load of the device group is determined by the first adder 3 by summing the signals Proportional to the expenses. We process 1) Gh: the flows per device measured by the sensors 4. stabilize the total load applied to the device group, serves as an ob (the correction regulator 5, to one of the inputs of which receives a signal of the actual total load from the output of the first adder 3, and on the other - a signal for setting the total load taken from the task bus. When the signal changes, the task is shared The correction controller generates a signal to increase, or decrease the load on each device, thereby driving the total cyi-jMapHyio load in accordance with the specified,

 The output parameter values are stabilized using private adjustments of the seven corrections, one of the inputs of which receives a signal about the actual value of the output parameter, measured by the sensor 8, and the other signal of setting this parameter outputs of blocks 9 of the minimum.

The output parameter reference signal is determined with adder 10 by. The sum of two signals: the first is proportional to the average value of this parameter over all working devices, calculated from

5 using the averaging block 11, the inputs of which receive signals from the scaling block 14 of the output parameters of the apparatus, and the second, the proportional deviation of the actual load from the set

Claims (1)

Invention Formula A device for automatic control of the load distribution between ff parallel connected apparatuses of soda ash production units, containing rf feed flow controllers, the inputs of which are connected to flow control flow rate sensors and to private correction controllers, and outputs to the control and supply mechanisms of processing Beeway streams, n output sensors (Parameter of devices, averaging unit if a general correction regulator, characterized in that, in order to reduce expenditure energy flux ratios by increasing accuracy; maintaining optimal load distribution; it additionally contains n scaling and minimum selection blocks, two adders and a bus for setting the total separation load, while the sensors of the output parameter anrtapaTa are parallelly connected to the inputs of the averaging block and the first inputs of their private correction controllers, the second inputs of which are connected to the outputs of the minimum selection blocks, the output of the averaging block is connected to the first input The second adder, the second input of which is connected to the output of the common correction regulator, the output of the second adder is connected in parallel to the inputs of the minimum selection blocks, the flow sensors of the process streams are connected in parallel to the inputs of the first adder, the output of which the correction torus, connected by its second input to the bus, sets the total load of 1x. Subscription