SU1454856A1 - System of automatic control of process of growing aerobic microorganisms in apparatus - Google Patents

Abstract

This invention relates to microbiological examination. The invention aims to increase product yield by increasing control accuracy. The system of automatic control of the growing process of aerobic microorganisms includes a meter 4 and an air flow controller 5 in the apparatus 1, block 6

Description

This invention relates to microbiology and can be used to automatically control aerobic fermentation processes.

The purpose of the invention is to increase the yield of the product.

The drawing shows the function on the scheme of the automatic

managing the growth of aerobic microorganisms.

The system contains an apparatus 1, in which microorganisms are cultivated, having a pipeline 2 supplying air to the device and a pipeline 3 for discharging exhaust gases, a meter 4 and an air flow regulator 5: a device, a delay unit 6, a measurement unit for the difference in oxygen concentration inlet air and exhaust gases, consisting of a pneumatic delay unit 7 and a concentration difference sensor 8, 6jioK 9 determining the amount of oxygen consumed, a differentiation unit 10, an adjustment regulator And and an executive device oystvo 12 mounted on the air supply to the apparatus. The pneumatic delay unit 7 is a pneumatic RC-chain consisting of series-connected chokes 1J

and containers 14.

Corrective Output

11 is connected to the inlet. Setting of the air flow regulator 5, to the inlet of which the output of the block 6 of the delay is connected.

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The proposed system can be implemented on standard,

and devices

The system works as follows.

 The air supplied to the device inlet 1, through the pulse to the pipeline, is fed to the entrance of the pneumatic delay unit 7, which is delayed by the time corresponding to the delay time of the change in the composition of the exhaust gases at the outlet of the device relative to the change in the composition of the air at the inlet. From block 7, air is supplied for analysis to one of the inputs of sensor B, the difference in concentrations, and washes one of its electrodes. Exhaust gas from the output of the apparatus, supplied through a pulse pipeline to another sensor input 8, washes the other electrode of the electrochemical cell of the sensor. Sensor 8 generates a signal proportional to the difference in oxygen concentrations in the incoming air and exhaust gases, which is fed to one of the inputs of the unit 9 for determining the amount of oxygen consumed. The second input of the latter is given a signal through the delay unit 6 from the output of the air flow meter 4, the signal of which is proportional to the air flow rate to the device and the corresponding composition of the spent lawn at the exit of the device at a given time. The output of block 9. Produces a signal in accordance with the law

Bbif-2,

3

where igbi, ib ,. . ifixj. is the value of the output and input signal of the direct current.

Since the signal comes from the output of sensor 8 and is proportional to the difference in oxygen concentrations in the incoming air C and exhaust gases Cj, and IBK, the signal from the output of meter 4 to the air flow through the delay unit 6 and proportional to the air flow Qg to the device, then the output signal of block 9 is proportional to the product of air flow by the difference in oxygen concentrations

Off

K.QjCC, - Cj).

This signal is fed to the input of the differentiation unit 10, from which the signal corresponding to the measurement rate of the amount of oxygen consumed is fed to the input of the correction regulator 11. If the amount of oxygen consumed is constant, the rate of its change is zero, the output of the correction regulator 11 the signal does not change, if the rate of change in the amount of acid consumed; is not equal to zero, then the signal at the output of the regulator 11 is changed and, arriving at the input of the air flow regulator 5, changes its task, the latter compares the received reference signal from the corrective regulator 11 s

The system of automatic control of the process of growing aerobic microorganisms in an apparatus that has piping for supplying air to the apparatus and for discharging exhaust gases, contains a meter and a regulator of air flow for aeration, a measuring unit

25 neither the difference between the concentrations of the component in the incoming air and the exhaust gases, the differentiation unit and the correction regulator, which is different in that

30 of the product output due to increased control accuracy, it is equipped with a unit for determining the amount of oxygen consumed and a delay unit, the input of the latter is connected to the output of the air flow meter, and the output is connected to the input of the Variable Flow Controller and to one of the inputs of the unit determining the amount of oxygen consumed;

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The signal received at the input of the Secondary is connected to the input of the unit and is differential from the output of the delay unit 6, and generates a command signal to the actuator 12, which changes the air supply until the reference signal to the regulator 5 comes from the correcting regulator 11, will not cease to change. This will happen when the rate of change in the amount of oxygen consumed becomes zero,

In this case, the unit for measuring the difference in concentrations of the component in the incoming air and exhaust gases consists of a pneumatic g delay unit and a difference sensor.

concentrations, and the pneumatic delay unit input is connected to the piping with the air supply to the apparatus, the output to one of the inputs of the concentration gauge sensor, the other coma oxygen input becomes rapia, concentration, Apyiu «w tooo when the consumption the second is connected to the pipeline from otnost microorganisms in oxygen, the gases worked, and the output of the sensor

Iv. . "Mch" h - "rt, octp ttmy pppklyuchen to

When implementing the proposed system

we provide higher accuracy in maintaining air flow

the difference in concentrations is connected to another input of the unit for determining the amount of oxygen consumed.

L856

at a value corresponding to the Mg-respiratory intensity of microorganisms due to the use in the management of a direct indicator of respiration intensity — the amount of oxygen consumed, by improving the quality of information and simplifying the node measuring the difference of oxygen concentration 1Q of the device at the inlet and outlet of the device. An increase in the accuracy of maintaining extremum in the intensity of respiration of microorganisms leads to an increase in the yield of the product.

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Claims (1)

Invention Formula 0 The system of automatic control of the process of growing aerobic microorganisms in an apparatus that has piping for supplying air to the apparatus and exhaust gases, contains a meter and a regulator of air flow for aeration, a measuring unit5 not the difference in concentrations of the component in the incoming air and exhaust gases, a differentiation unit and correction regulator, characterized in that, in order to increase product yield by increasing control accuracy, it is equipped with a unit for determining the amount of consumed ki The output of the latter is connected to the output of the air flow meter, and the output is connected to the input of the variable flow controller and to one of the inputs of the unit for determining the amount of oxygen consumed; Secondly, it is connected to the input of the differentiation unit, wherein the node measuring the difference in the concentrations of the component in the incoming air and exhaust gases consists of a pneumatic g delay unit and a difference sensor concentrations, and the input of the pneumatic delay unit is connected to the pipeline supplying air to the apparatus, and the output is connected to one of the inputs of the differential concentration sensor, the other input is the concentration bones, Apyiu "w ° that is connected to the exhaust gas pipeline, and the output of the sensor  ohtp ttmy pppklyuchen to the difference in concentrations is connected to another input of the unit for determining the amount of oxygen consumed.