SU1314370A1 - Device for generating gas bubbles - Google Patents

Abstract

The invention relates to a device. M for the study of liquids and gases and can be used to improve the accuracy of the process of generating gas bubbles (HP) by producing single-size HPs of a given size. To do this, a short voltage pulse is applied to the working end of electrode 2, free of the insulating layer. The number and size of the semiconductor formed during electrolysis is determined by the values of the pulse width of the voltage and the amplitude of the voltage pulse IJ. The HP is discharged into the tank 1 with the working fluid through the capillary tube 7 via a cylinder 5 with a piston 6. 1 sludge / / (L with so about

Description

The invention relates to devices for the study of liquids and gases and can be used in installations for the study of cavitation phenomena.

The purpose of the invention is to improve the accuracy of the generation process by obtaining single bubbles of a given size.

The drawing shows a device for generating gas bubbles.

The device contains a container with a working fluid 1 and two electrodes 2 and 3 connected to a voltage source 4. One of the electrodes 3 is located in the container with the working fluid 1. The device also has a cylinder 5 with a piston 6 and a capillary 7, which connects it to the cylinder 5. In this case, the second electrode 2 is placed in the capillary 7 with a gap relative to its The inner surface also has an insulating layer on its surface, besides the working end, and the voltage source 4 is made in the form of a pulse generator. Capillary p 7 is made of transparent material.

A device for generating gas bubbles works in the following way.

When a short voltage pulse is applied from the source 4 to the electrode 2, small sized gas bubbles are formed at the working end of the working fluid by electrolysis. The amount of gas t formed during electrolysis is determined by the formula

t K I t, (1)

where K is the electrochemical equivalent of the working fluid (electrolyte); I - current flowing through the working

fluid; voltage pulse duration.

Based on relation (1), the radius R of a gas bubble formed as a result of electrolysis is determined by the ratio

ZK

) (u)

(2)

0

five

0

five

0

five

4 pr where f) is the gas density,

g is the specific resistance of the electrolyte;

IJ is the amplitude of the pulse.

From expression (2) it can be seen that, by changing the values of and and m, it is possible to regulate the size of the generated gas bubble.

It has been established experimentally that electrolysis produces several gas nozzles with a radius of 10 at the working end of electrode 2.

. (3)

Vn

where n is the number of gas bubbles formed.

Claims (1)

Movement of the piston 6 one by one through the slice of the capillary 7 is output into the working fluid 1. In the device implementation example, pulses of duration t 0.23 ms were used, the amplitude of which varied from 1 to 60 V, as a result of which bubbles were generated in a wide range of their sizes, including bubbles of small {- 1 micron) sizes. Invention Formula A device for generating gas bubbles containing a container with a working fluid and two electrodes connected to a voltage source, one of which is located in a container, characterized in that, in order to increase the accuracy of the generation process by obtaining single bubbles of a given size, it It has a cylinder with a piston and a capillary, which connects the tank with the ciliidrome, while the second electrode is dimensioned; it is in the capillary with a gap relative to its inner surface and has, on its entire surface, except for the working end, insulation | TH layer, and the voltage source is made in the form of impulse generator.