SU77816A1 - Apparatus for automatic stabilization of a given alkalinity or acidity of a solution - Google Patents

Description

The invention is based on devices for the automatic stabilization of a given concentration of solutions in relation to the cleaning plant of sugar factories.

Devices are known which consist of an exciter, acting on the principle of a change in the electrical conductivity of a solution, with the subsequent amplification of the received impulse and its use in an electromagnetic performer. However, this principle has not yet been used to continuously measure the alkalinity of carbonated juice in the sugar industry due to the ignition of the electrodes.

In the proposed apparatus, this disadvantage is eliminated by the fact that the electrodes of the apparatus are cleaned by the incoming solution and are equipped with a temperature compensator, and the reactor is made in the form of a sector coupled to the electric motor of the rotating rheostat included in the primary current circuit.

FIG. 1 shows the pathogen apparatus; in fig. 2 - motor n in FIG. 3 - electromagnetic performer.

The causative agent (Fig. 1) consists of circulation pipes I and I, but with which the saturation juice circulates at a rate sufficient to wash out the sediments on the pipes and electrodes. On one side, pipes 1 and G are connected to a saturation boiler, on the other, they are connected by an extender P.

A long glass tube 2 is inserted into the circulation tube and clamped with a soft impermeable gland 5. Metal rings are placed on the tube - electrodes 3 and 4, from which wires 6, 6 and 0 are led out through a hole in the upper part of the tube.

An electric current passes through the circuit and between the electrodes 3 and 4, i.e., through the carbonated juice. When the conductivity of the juice changes, it is obvious that the current passing through the circuit will change. By size Yfi 77816

no current is judged on the conductivity of the medium. The interior of tube 2 is typically filled with an insulating mass, which is wax sealing.

A long glass tube 2 with electrode metal rings 5 and 4 is also inserted into the circulation pipe, but not placed outside, but inside the tube, where the filtered saturation juice of a given concentration is poured and having the same conductivity coefficient as the measured juice. Wires (and 5 to the metal rings are also passed through the tube, and the wire going to the electrode at the bottom of the tube is enclosed in a glass tube. The tube is plugged with a rubber plug through which the wires pass through to the liquid level. The same tube The tube and tube should be filled with an insulating compound that can withstand temperatures of 100. The plugged tube with juice should be sterilized. This electrode serves as a measurement standard.

The expander P is designed so that when the temperature of the controlled solution changes, the reference electrode (tube 2) Zspel accept the temperature of the measured solution while it passes through the expander P to the electrode (tube 2), which measures the concentration of its medium, to compensate for this. the effect of temperature on the result of this measurement.

Here there is a dependency:

Let (t-f) be the temperature variation of the solution;

/ -surface containing the end of the tube 2;

/ C is the heat transfer coefficient; 2 - heat transfer time;

Cn is the heat capacity of the glass tube;

gn is the weight of the glass end of the test tube with a solution;

C (-the heat capacity of the solution in the test tube;

gc is the weight of the solution in the test tube; Q-capacity of the spacing P;

y-constant volumetric circulation rate of the solution. C. g ,, - f S. g, (t-t ..

Then Z,

M 2j

whence the Q-volume of the opacifier P. is determined

The electroreactor (Fig. 2) is a device understood from the following description.

Let the alternating current branching at the point O (Fig. 1) with its branches pass the measuring 2 and reference 2 electrodes and enter the electric reactor (Fig. 2) through wires 7 and 7.

Pass through electromagnets E and 5 current meter and variable rotating resistances R and R currents of both branches are connected at point 9 (on the axis of rotation of the resistor RR and but wire 10 goes back to the current source.

If the current in branching is O, 4, 3, 6, 7, 8, 8, R, 9 and 10 is greater than in branching O, 3 4, b 7 Oe, 5, .9 and 10, then electromagnet 3 is no electromagnet 5 and close the mercury contact 13, as a result of which the electric motor 14 will receive power, i.e. the current (alternating or constant) will go from the current source along the circuit //, 12, 13 to the motor 14, 15 and return through the wire 16 and 17 to the current source. Motor M under the action of current will come into rotation and turn through the bevel gearing the CCC sector counterclockwise. Together with the sector, the resistor RR will turn and move relative to sliding or

The rolling contacts 8, 8 so that the resistance J increases, and the resistance decreases so that the currents in the coils of the electromagnets E and 5 are equalized, and the contact / 5 is opened, stopping the further rotation of the motor M.

The CCC sector carries a K brush (sliding or rolling contact), which supplies current (constant or alternating) from a new source through wire 18-18 to a potentiometer PP, where it branches into two equal or unequal branches 18, 19 , 20 and / 5, / Р and 20, depending on the position of the contact K on the potentiometer. Through these wires, the branched current is directed to the performer, where, after passing through the windings of the electromagnet and connecting at a common point 21, it returns to the current source.

When the mercury contact 13 closes, the motor will turn into rotation, the motor will turn the CCC sector in the opposite direction, producing the opposite of the previous action.

Thus, when the electrical conductivity between the measuring electrodes 4-3 (tubes /) changes in comparison with the electrical conductivity of the juice between the electrodes and 4 (tubes /), one of the mercury contacts 13 closes and a simultaneous movement of the contact occurs. L sector of the CCC, changing the position of the resistor Rll, leveling the currents in the electromagnets 55 n setting the limit for this movement.

The process carried out by the apparatus is equivalent to the feedback between the performer and the sensitive element of the electroreactor.

By wires 20 and 20, the electric currents modulated in the exciter and amplified in the electroreactor are directed to an electromagnet.

The electromagnetic actuator (Fig. 3) consists of an annular electromagnet FF into which the rotating core of the ZhZhElectromagnetic fixed on the bracket Y, which also serves as the bearing of the axis of the gate, is mounted which revolves along the axis of the adjusting gate W and n core with iron core.

The power of the electromagnet windings is supplied through wires 20 and 20, which, connected to the terminal of wire 21, return current to the current source.

E: If the current of the electromagnet winding, pntay from the wire 20, is stronger than the current of the winding fed from the wire 20, the center of gravity of the iron core moves to the left. If the current of the wire 20 is stronger, the core will turn to the right, additionally, the machine will be connected to the regulator of the saturation gas supply to the saturation boiler and thus regulates the gas supply in the quantities necessary to achieve the desired concentration of the saturation juice.

Subject invention

A device for automatic stabilization of a given alkalinity or acidity of a solution, consisting of an exciter acting on the principle of changing the electrical conductivity of a solution, followed by amplifying the received pulse and using it in an electromagnetic actuator, characterized in that the electrodes of the apparatus are cleaned with incoming solution and equipped with a temperature compensator , and the reactor is made in the form of a sector, coupled with the motor of bevel gear and turning the rheostat, included in the lane | . circuit current.

No. 77816

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