SU1399343A1 - Device for automatic regulation of process of stabilizing culture fluid - Google Patents

Abstract

The invention relates to devices for automatically regulating the process of stabilization of a culture fluid and can be used in the food and microbiological industry. The purpose of the invention is to reduce product losses by determining the change in integration time in dividing unit 6 depending on the change in flow rate and level of culture fluid in the reactor, measured by flow sensor 1 and level 4, integrating the signal in integrator 7 coming from sensor 8 pH values of the culture fluid, summing signals in the adder 10 supplied from the outputs of the integrator 7 through the regulator 9, the flow sensor 1, the sensor 12 pH values through the regulator 11 pH values stabilized cult tral fluid regulator correcting specifying acid 13 flow connected to the output of the adder 10. The 1-yl. ifi (l

Description

YU

CO 4

WITH

The invention relates to devices for automatically regulating the process of stabilization of the culture fluid and can be used in the food and microbiological industries.

The purpose of the invention is to reduce product losses.

The drawing shows a schematic diagram of the device,

The device contains a flow sensor 1 and an actuator 2 installed on the supply line of the culture fluid, connected with the controller 3,

A level 4 sensor is installed in the reactor 5 and is connected to the input of the setting of the regulator 3 for the flow of culture liquid and the dividing unit 6, the second input of which is connected to the flow sensor 1, and the output to the first input of the integrator 7, the second input of the integrator 7 is connected to the sensor 8 pH values set on the culture fluid supply line. The output of the integrator 7 is connected to the input of the regulator 9, the output of which is connected to the first input of the adder 10 "The second input of the adder 10 is connected through the regulator 11 with the pH sensor 12 installed on the supply line of the stabilized culture liquid. The third input of the adder 10 is connected to the sensor 1 of the flow of culture fluid, and the output of the adder - to the input of the task of the acid consumption regulator 13, which is connected to the sensor 14 of the acid consumption and to the actuator 15j installed on the acid supply line to the eject® p 16,

The device works as follows.

At steady state operation, the circuit: the flow sensor 14, the regulator 13 and the actuator 15, stabilizes the supply of acid to the ejector according to the task

step from the adder 10. The task Q | j. in a sumplator 10 is formed in proportion to the values of G,, pHst:

Q Q, + Qa - Q

3

(1) 55

where Q, K, RIC, W, Q Kg RHE-i-, Q3 Kz GH.,

Q

S

0 5 o Q

K ,, K

g

TO.

five

pH

pH

st

-j - proportionality coefficients of the controllers,

J, is the signal of the pH sensor of the culture fluid, which enters the input of the adder through the integrator and the regulator 9, the signal of the pH sensor of the stabilized culture liquid, which enters the integrator through the regulator

 eleven,

GH is a signal from flow sensor 1, which enters the integrator through controller 3.

With an increase in the selection of the stabilized culture liquid from the reactor 5, the liquid level decreases. The signal from sensor 4 is fed to the input of the setting of regulator 3, which produces a signal proportional to the change in level, and outputs it to actuator 2, increasing the flow of culture fluid. At the same time, signals from sensors 1 and 4 about the change in the flow rate and the level come to the dividing unit 6, in which certain are carried out; changes in integration time

The calculated signal is transmitted by a dividing unit to integrator 7, where during a time (T -. T) the signal from the pH sensor 8 is integrated, and

H P

T - y, where T is the lag time,

H is the height of the reactor, G is the flow rate of the liquid, F is the area of the reactor, dT is the change in the integration time as the flow rate or level changes.

 iiH (l-)

G + & G.

F.

45

50

55

where 4H, (jG - level change or

consumption, the + sign corresponds to the increase in consumption (D G 0), - decrease (dG:. 0).

Since the signal from the flow sensor 1 has increased (C + DS), as a result of the addition of the signals, the output signal of the adder 10, which is fed to the input of the flow controller 13, increases. The increased signal from the regulator 13 is fed to the executive mechanism, opens

it, thereby increasing the amount of acid into reactor 5,

When reducing the selection of stabilized hydraulics, the level in reactor 5 increases and the signal from sensor 4 enters the input of the reference of controller 3, which tests the signal proportional to the level change and transfers it to executive mechanism 2, reducing the flow of culture fluid

At the same time, signals from sensors 1 and 4 about the change in flow and level come to dividing unit 6, where the change for the integration time T is calculated

The calculated signal is transmitted by block 6 to integrator 7, where the signal from sensor 8 is integrated over time (T). Since the signal from sensor 1 has decreased (G - 4G), as a result of signals, the output signal of the adder 10 decreases, which enters the chamber of the task of the flow regulator 13. The reduced signal from the regulator 13 enters the actuator 15 and closes it, reducing the flow of acid into the reactor .5. .

The use of the invention in the production of vitamin B12 reduces the loss of vitamin 2%,

five

Formula and 3 sets. A device for automatic regulation of the process of stabilization of a chycral fluid, containing a sensor for the flow of culture liquid, connected through a regulator with an actuator installed on the supply line of a culture liquid, an acid consumption sensor connected through an regulator with an actuator mounted on the acid supply line, a pH sensor mounted on the supply pipe of the stabilized culture liquid connected to the regulator, sensors to the level of the culture liquid. in the reactor, connected to the input of the setting of the flow regulator of the culture liquid, characterized in that, in order to reduce product losses, it is equipped with a dividing unit and the pH measuring sensor, 5, sequentially connected by the integrator, torus and adder, two. inputs. the latter are connected respectively to the flow sensor. cultural. pn-stabilized culture fluid, a - the output of the adder is connected to the acid supply controller, and the inputs of the division unit are connected, respectively, to flow sensors, the culture fluid and the level of culture fluid in the reactor, and the output connected to the integrator input.

0

0

five

Ni-gtur 1 nal ukiyokost

TURAL - JI.DOSTOST

Claims (1)

Claims A device for automatically regulating the process of stabilization of the culture fluid, comprising a culture fluid flow sensor connected through an regulator to an actuator mounted on the culture fluid supply line, an acid flow sensor connected through a regulator to an actuator mounted on an acid supply line, a quantity sensor pH mounted on the pipe15 wire stabilized culture fluid supply, connected to the regulator, the level sensor of the culture fluid in the reactor, connected to the input of the task of the regulator 2Q of the flow of culture fluid, characterized in that, in order to reduce product losses, it is equipped with a division unit and series-connected sensor 25 for measuring the pH of the culture fluid, an integrator,: a regulator and an adder, two. the input of the latter is connected respectively to the flow sensor of the culture fluid and to the 30 regulator of the pH of the stabilized culture fluid, and the output of the adder is connected to the acid supply regulator, the inputs of the the lines are connected, respectively, with flow sensors of the culture fluid and the level of the culture fluid in the reactor, and the output is connected to the input of the integrator.