RU208008U1 - Device for generating ozone in an electric discharge - Google Patents

Abstract

The utility model relates to the synthesis of ozone from oxygen-containing gases. The device for producing ozone contains electric discharge electrodes made of cylindrical insulated cable segments located close to each other in a rectangular chamber and connected to a voltage source through resistors. EFFECT: simplification of the device, reduction of its size, increase in productivity and service life.

Description

The utility model relates to devices for the synthesis of ozone from oxygen-containing gases.

A device for ozonization is known, containing two high-resistance electrodes in the form of strips fixed on both surfaces of the dielectric barrier and spaced apart so that the strips of one electrode are located relative to the strips of the other electrode in a sequentially alternating order and each strip of electrodes is connected to a high-resistance voltage source through a resistor [1] ...

This device, due to the use of resistors, has an increased service life and ozone performance. However, this device has significant linear dimensions and technological difficulties in its manufacture.

The closest in technical essence to the claimed device is the device selected as a prototype, containing discharge electrodes made of pieces of insulated cylindrical cable and located in a rectangular chamber in several rows, both in horizontal and vertical planes close to each other and connected to voltage source in a checkerboard pattern [2].

However, the disadvantage of this device, like all ozonizers with highly conductive electrodes, is the high heating of the ozone-containing gas, which leads to a decrease in the resource and productivity in terms of ozone output.

The technical result of the claimed utility model is to increase the productivity and service life of the device with a compact design of the ozonation chamber.

This technical result is achieved by the fact that in a utility model containing discharge electrodes made of cylindrical insulated cable sections and located in a rectangular chamber close to each other and connected to a voltage source in a staggered manner, the connection is made through resistors. In the gas-discharge gap, less heat is released by the amount of heat release in the resistors, while heat transfer from the resistors back to the gas-discharge gap does not occur, due to this, the ozone productivity increases.

FIG. 1 shows a perspective view of a device with a circuit for connecting to a high-voltage source of alternating voltage 4 using resistors 3. The device for producing ozone also contains a rectangular body 2 and discharge electrodes 1 made of pieces of insulated cylindrical cable, which are located and respectively connected to a source 4 in staggered (in our case, Fig. 1 shows the simplest version, in each column and row there are two pieces of insulated cable, obviously a more complex arrangement is possible in terms of the number of electrodes more than two). Each discharge electrode is connected to a power source through a resistor using a detachable connection (for example, a terminal) or using a permanent connection (for example, soldering).

The device for producing ozone works as follows. The flow of ozonized gas enters chamber 2. Then it passes into the discharge gaps formed by the surfaces of the cable segments 1. When a high alternating voltage is applied through the resistors 3 to the electrodes 1 in the active zone, sliding discharges occur along the cylindrical surface of the cable segments 1, and ozone is synthesized. Then the ozone-gas mixture leaves the discharge gaps and is supplied to the ozone treatment facility. The number of bit zones on each cable segment is determined by the number of contact lines of the cable segments. Due to the staggered order of alternation, for the cable segments located inside the section of the ozonation chamber, the number of such lines is four, and for the extreme segments it is three and for the angular ones - two.

In the utility model, as in the analogue [1], the heat release is redistributed. In the gas-discharge gaps, the amount of heat is released less by the amount of heat generated in the resistors 3. Due to this, the resource and the productivity of ozone are increased. This follows from the discrete structure of the barrier discharge, which consists of individual partial discharges (micro-discharges). Performance and heating effects are determined by each micro-discharge. When using resistors in the claimed ozonizer, the amplitude of the microdischarge current will decrease, and the microdischarge time will increase as a result of the presence of resistors in the circuit of individual microdischarges. In this case, the transferred charge remains unchanged, and the Joule heat release in the micro-discharge zone in the gas will decrease as a result of the redistribution of heat between the micro-discharge zone in the gas and the resistor, therefore, the initial ozone synthesis remains the same due to the invariability of the charge, and the heating of the micro-discharge, barriers and ozone-gas mixture decreases , as a result of which the decomposition of ozone decreases. As a result, the ozone yield from a separate microdischarge and in the ozonizer as a whole will increase.

The implementation in the ozone generator of the most critical element of the dielectric barrier of the lengths of cables allows you to increase the service life of the proposed device. Such cables are widely produced by industry, their production and quality control are automated, which is a guarantee of their high reliability.

During the experiment, a comparison was made in terms of the ozone yield with and without resistors. The performance of the claimed camera of the model is 30% higher.

The experiment was carried out with the same electrical loads. The operating voltage of the high-voltage power supply is U = 7 kV at a power supply frequency of f = 400 Hz. The resource experiment continues. At present, the duration of continuous operation of the proposed device is over 2000 hours.

Sources of information:

1. RF patent No. 2660870, IPC S01B 13/11. Publ. 07/10/18. Bul. No. 19.

2. RF patent No. 2275324, IPC С01В 13/11. Publ. 04/27/06. Bul. No. 12.

Claims (1)

A device for producing ozone, containing discharge electrodes made of pieces of insulated cylindrical cable and located in a rectangular chamber in several rows in both horizontal and vertical planes close to each other, connected to a voltage source in a checkerboard pattern, characterized in that each discharge electrode is connected to a voltage source through a resistor.

Images