SU131420A1 - Method for continuous measurement of reverse emf during electrolysis - Google Patents

Description

The known methods for determining the back electromotive force require, at the time of the measurement, the electrolytic bath from the source supplying it with electric power, and are characterized by abrupt changes in the current flowing through the bath. This is due to a violation of the electrolyte mode. Both methods allow periodic determination of the emf value.

The described method of continuous measurement of the inverse emf. in the process of electrolysis using a counting device, it is possible to determine the magnitude of the emf., without changing the steady state electrolysis and without disconnecting the electrolytic bath from the power source with its electric power.

This is achieved by the fact that the value of the reverse emf. is determined by the strength of the current passing through the electrolyzer and the magnitude of the voltage on the bath by solving the equation

where Е is the value of the electromotive force being determined;

and - the voltage of the constant component on the bath (on the electrodes);

and - voltage variable component;

/ - constant current strength

/. - current of variable component.

To solve this equation, it is necessary to perform three mathematical operations: multiplication, division, and addition, which is carried out by an electromechanical counting device (according to the scheme).

The supply voltage through the isolation transformer / and rectifier 2 is supplied to the electrodes of the electrolysis bath 3. In the circuit

.I. J

Amplifiers are included by varying the voltage components Y and Y, which have a stable gain factor and a linear characteristic. These amplifiers are designed to amplify and then convert an alternating voltage signal to a constant so that all mathematical transformations can then be carried out at a constant current.

The voltages f / i and U-y at the terminals are proportional to the alternating components of current and voltage, respectively, and the voltages f / a and Ui are proportional to the constant components of current and voltage. These voltages are applied as signals, proportional to the components of the current and voltage of the electrolysis cell, to the inputs of the solver.

The voltage at the output of the last solver unit determines the desired magnitude of the back electromotive force, which is recorded continuously by a self-recording voltmeter.

Subject invention

Claims (2)

1- Method for continuous measurement of inverse emf in the process of electrolysis using a counting device, characterized in that in order to determine the inverse emf value, the voltage and current flow through the electrolyzer are measured, and the reverse emf is mathematically determined. 2. The implementation of the method according to claim I, characterized by the use of a counting-resolving device, consisting of multiplying, dividing and adding units.