RU2255897C1 - Device for generating of ozone - Google Patents

Abstract

FIELD: medicine; agriculture and other branches of economy.

SUBSTANCE: the invention is pertaining to the field of medicine, agriculture and other branches of economy, in particular to a device for generation of ozone. The device contains high-voltage and earthed located in a sealed body plate-type electrodes with the central holes, a power supply unit, leads of which are connected to the electrodes; a union for a working oxygen-containing gas supply; a union for withdrawal of heat transfer medium and a gas-ozone mixture. The electrodes are made with a capability of cooling by the heat transfer medium and coated outside by a dielectric. In addition the electrodes are made out of parallel plates hermetically connected t0 each other forming a cavity, in which there are jumpers rigidly linking the plates to each other. Some parts of the electrodes plates have protruding beyond the limits of the active zone. The unions for the heat transfer medium delivery to the electrodes and withdrawal of the heat transfer medium from them are connected to the cavity of the electrodes through injectors and the collectors made in the form of pipes with holes located at the opposite edges of the electrodes. The spacing dielectric inserts separating the electrodes are brought out of the zone of discharge and installed on a circumference between the protruding parts of the plates and the adjacent electrodes. The offered invention ensures equalization of the electrical field between the electrodes, more uniform distribution of the discharge between them, enlargement of a volume occupied by the discharge and a possibility to operate using heightened voltages and a constant optimal length of a discharge interval at exclusion of a breaking-down of the dielectric.

EFFECT: the invention ensures equalization of the electrical field between the electrodes, more uniform distribution of the discharge between them, enlargement of a volume occupied by the discharge and a possibility to operate using heightened voltages.

13 dwg

Description

The invention relates to devices for generating ozone and can be used for disinfection of drinking water, wastewater treatment, indoor air, as well as in medicine, in industrial production, in agriculture and other industries.

Known plate type ozonizer made of several discharge elements, each of which consists of two dielectric plates, cooled grounded and high voltage electrodes having central holes and placed in a sealed parallelepiped-shaped housing. Between the dielectric plates in the discharge zone, dielectric gaskets of a certain height are laid, creating gap discharge gaps through which ozonated air is passed. The size of the gap discharge gap is determined by the height of the square or round dielectric spacers [1].

The disadvantage of this ozonizer is the placement of spacer gaskets of insulating material in the discharge zone, which leads to a decrease in the active area of the electrodes, field distortion, the inability to uniformly distribute the discharge between the surfaces of adjacent electrodes, the gradual destruction of the dielectric, a decrease in the performance of the ozonizer and a reduction in its service life. Corona-resistant and ozone-resistant fluoroplastic are used as spacers, which, under long-term mechanical loads, is subject to plastic deformation, leading to a change in the size of the gap of the discharge gap, i.e. deterioration of the operating parameters of the ozonizer. The absence of shielding (alignment of the electric field) of the device for generating ozone reduces the reliability of its operation due to possible electrical breakdowns and eliminates the most productive mode of operation at elevated voltages.

A known system of electrodes of an ozone generator, containing at least two electrodes, each of which is made of two corrugated membranes, rigidly interconnected and forming an inner annular cavity having cooling water inlet and outlet fittings, the high-voltage and grounded electrodes have the same configuration in within the active zone, the corresponding vertices and depressions of the upper and lower membranes of each electrode are at the same distance from each other, and in the inner annular cavity between the membrane we placed a spacer insert within the active zone, having a height equal to the distance between the membranes, which in turn is equal to 10-30 values of the discharge distance. To ensure the constancy of the optimal length of the discharge gap between the electrodes, there must be a spacer insert made of dielectric material [2].

The disadvantage of this ozonizer is the placement of spacer gaskets of insulating material in the discharge zone, which leads to a decrease in the active area of the electrodes, field distortion, the inability to uniformly distribute the discharge between the surfaces of adjacent electrodes, the gradual destruction of the dielectric, a decrease in the performance of the ozonizer and a reduction in its service life. Corona-resistant and ozone-resistant fluoroplastic are used as spacers, which, under long-term mechanical loads, is subject to plastic deformation, leading to a change in the size of the gap of the discharge gap, i.e. deterioration of the operating parameters of the ozonizer. The absence of shielding (alignment of the electric field) of the device for generating ozone reduces the reliability of its operation due to possible electrical breakdowns and eliminates the most productive mode of operation at elevated voltages.

The technical solution closest to the invention is an ozonizer in which the electrodes are made in the form of hollow elements (for example, a hollow disk with a hole in the center) obtained by connecting corrugated annular membranes with a ratio of the radius of curvature of the corrugations to the length of the discharge gap equal to 5-25, and the corrugations bipolar elements are equidistant within the discharge gap. Corrugations give the plates rigidity and allow applying a dielectric coating without disturbing flatness due to compensation of thermal deformations by the corrugations. Between the membranes, spacers made of insulating material are installed that do not impede the passage of gas [3].

The disadvantage of this ozonizer is the placement of spacer gaskets of insulating material in the discharge zone, which leads to a decrease in the active area of the electrodes, field distortion, the inability to uniformly distribute the discharge between the surfaces of adjacent electrodes, the gradual destruction of the dielectric, a decrease in the performance of the ozonizer and a reduction in its service life. Corona-resistant and ozone-resistant fluoroplastic are used as spacers, which, under long-term mechanical loads, is subject to plastic deformation, leading to a change in the size of the gap of the discharge gap, i.e. deterioration of the operating parameters of the ozonizer. The absence of shielding (alignment of the electric field) of the device for generating ozone reduces the reliability of its operation due to possible electrical breakdowns and eliminates the most productive mode of operation at elevated voltages.

The objective of the invention is to increase the productivity, reliability and durability of the device for generating ozone.

The technical result is the equalization of the electric field between the electrodes, a uniform distribution of the discharge between them, an increase in the volume occupied by the discharge, the possibility of working at elevated voltages, the constancy of the optimal length of the discharge gap, and the exclusion of destruction of the dielectric.

The problem is solved in that in a device for generating ozone containing high-voltage and grounded plate electrodes located in a sealed enclosure, having central holes and configured to cool with a coolant, coated externally with a dielectric and alternating through one, a power source whose leads are connected to the electrodes, a fitting for supplying a working oxygen-containing gas and a coolant and a fitting for removing a coolant and a gas-zone mixture, the electrodes being made of tightly interconnected parallel plates forming an internal cavity in which jumpers are mounted perpendicularly to the internal surfaces of the plates of the plates, rigidly connecting the plates to each other, and the fittings for supplying the heat carrier to the electrodes and removing the heat carrier from them are connected to the electrode cavity through injectors and collectors, made in the form of pipes with holes located at opposite edges of the electrodes, spacing dielectric inserts between the electrodes, plates The electrodes are made with parts protruding beyond the limits of the active zone of the electrodes, and the spacing dielectric inserts between the electrodes are removed from the discharge zone and installed around the circumference between the protruding parts of the plates of adjacent electrodes.

One of the plates of the electrodes can be made with the part protruding beyond the limits of the active zone of the electrodes, ending with a cylindrical rounding with the possibility of performing the functions of the screen.

Both plates of the electrodes can be made with parts protruding beyond the limits of the active zone of the electrodes, ending with a semi-cylindrical rounding with the possibility of performing the functions of the screen.

Spacing dielectric inserts can be made in the form of cylindrical rings with holes.

Spacing dielectric inserts can be made in the form of support rods.

The removal of spacing dielectric inserts from the discharge zone allows to increase the productivity of the device for generating ozone, its reliability and service life. Alignment of the electric field between the electrodes, obtaining a more uniform distribution of the discharge between them, increasing the volume occupied by the discharge, and providing the possibility of working at elevated voltages lead to an increase in the productivity of the device. Improving reliability is achieved by ensuring the constancy of the optimal distance between the electrodes due to the use of other insulating materials for distance inserts - less ozone-resistant and corona-resistant, but more rigid with higher and more stable insulating properties. The exclusion of mechanical destruction of the dielectric on the surface of the electrodes upon receipt of a more uniform distribution of the discharge between them leads to an increase in the service life of the device.

Figure 1 shows a device for generating ozone.

Figure 2 shows the electrode system of a device for generating ozone with flat electrodes with the implementation of one of the plates of the electrodes with a protruding part outside the active zone of the electrodes.

Figure 3 shows a section aa in figure 2.

Figure 4 shows a view of B in figure 2.

Figure 5 shows a view In figure 2.

In Fig.6 shows a view of G in Fig.3.

In Fig.7 shows a view of G in Fig.3 with the implementation of the spacing dielectric inserts in the form of support rods.

On Fig shows the electrode of the device for generating ozone with flat electrodes with the implementation of both plates of the electrodes with protruding parts outside the active zone of the electrodes.

In Fig.9 shows a section aa in Fig.8.

In Fig.10 shows a section bB in Fig.8.

Figure 11 shows the electrode of a device for generating ozone with corrugated electrodes.

In Fig.12 shows a section aa in Fig.11.

On Fig shows the electrode of the device for generating ozone with a radial arrangement of the injector.

A device for generating ozone contains located in a sealed enclosure 1 high voltage 2 and grounded electrodes 3 having central holes and made of stainless steel (figure 1). The electrodes are cooled by a coolant and uniformly coated externally with a corona-resistant dielectric 4 insulation (Fig. 3). The electrodes alternate through one (figure 1). The conclusions of the high-voltage power supply 5 through the bushing insulator 6 are connected to the electrodes 2, 3. The device for generating ozone is equipped with fittings for supplying a working oxygen-containing gas 7 and coolant 8 and fittings for removing the coolant 9 and gas-ozone mixture 10, as well as fittings for supplying 11 and removal 12 coolant from the electrodes (Fig.1, 2). The electrodes 2, 3 are made of tightly interconnected plates 13, 14, forming an internal cavity 15 (figure 3). For mounting the electrodes, there are tie rods 16 (Fig. 1). The plates of the electrodes 13, 14 are installed parallel to each other and are rigidly interconnected by jumpers 17 (Fig.2, 3). The jumpers are made in the form of plates of the same width, placed in the cavity 15 formed by the electrode plates, and mounted perpendicular to the inner surfaces of the electrode plates 13, 14. The jumpers 17 are made of stainless steel and are attached to the inner surfaces of the electrodes 2, 3, for example, by soldering .

The fitting for supplying the coolant to the electrodes 11 and removal of the coolant from them 12 (Fig. 2) is connected to the cavity of the electrodes 15 (Fig. 3) through injectors and collectors made in the form of pipes 18, 19 (Fig. 2) with holes 20 (Fig. .4), 21 (Fig. 5) located at opposite edges of the electrodes 22, 23 (Fig. 3). High-voltage electrodes 2 are connected to fittings for supplying a heat carrier 8 through a hose 24 of insulating material, the length and diameter of which are selected from the conditions for ensuring high ohmic resistance (Fig. 1). The jumpers 17 are located either perpendicular to the edges of the electrodes 22, 23 (Fig. 3) when the electrodes are flat or corrugated with a radial arrangement of corrugations, or coaxially when the electrodes are flat or corrugated with an annular arrangement of corrugations (Figs. 11, 12). The plates of the electrodes are made with parts protruding beyond the limits of the active zone of the electrodes: either one of the plates 13 of each electrode is made with a part 25 protruding beyond the limits of the active zone, ending with a cylindrical rounding 26 with the possibility of performing the functions of the screen (Fig. 3), or both plates of the electrodes 13, 14 are made with parts 25 protruding beyond the active zone of the electrodes, ending with a semi-cylindrical curvature 27 with the possibility of performing the functions of the screen (Fig. 9). In this case, either the lower plate 14 is rigidly connected to the upper plate 13 (Fig. 3), or the protruding parts of the plates of the electrodes 25 are rigidly interconnected (Fig. 9). The spacing dielectric inserts between the electrodes 28 are removed from the discharge zone and installed along the perimeter of the electrodes between the protruding parts of the plates of adjacent electrodes (Fig. 3).

Spacing dielectric inserts 28 can be made in the form of cylindrical rings with holes 29 (Fig.6).

Spacer inserts can be made in the form of support rods of arbitrary section 30, providing rigidity and structural strength (Fig.7).

The electrode 2, located first from the fitting for supplying a working oxygen-containing gas 7, is solid (without a central hole) (Fig. 1).

When the device for generating ozone, the working oxygen-containing gas (for example, air or oxygen) is cleaned in the device for cleaning the working oxygen-containing gas 31 (Fig. 1) and moisture is separated in the device for separating moisture from the working oxygen-containing gas 32. The working oxygen-containing gas is supplied to the housing 1 through the nozzle 7, is directed into the space between the electrodes 2, 3 from the periphery to the center. A high-frequency alternating voltage of the required magnitude from the power source of the device for generating ozone 5 is applied to the electrodes 2, 3. An electric barrier discharge arises between the electrodes, which acts on the oxygen-containing gas. The resulting free electrons having large energy, resulting in the destruction of the oxygen molecules and the formation in the discharge gap between the electrodes of the ozone molecules _(O3), which is discharged through nozzle 10. The heat generated in the electrodes during discharge is diverted created by coolant flow. The coolant stream is pre-cooled in the cooling device 33. The coolant is fed into the cavity 17 of the electrodes 2, 3 (Fig. 3) either through injectors made in the form of pipes 18 with holes 20 (Figs. 2, 4) located at the inner edge of the electrodes, or through injectors located radially and made with a hole 34 (Fig.13) at the end of the pipe located at the inner edge of the electrodes 22, and withdrawn from the cavity 17 of the electrodes 2, 3 through the holes 21 of the collectors 19 (Fig.2, 5) located along the outer edge of the electrodes 23 (figure 3). As a result of the execution of the first electrode, a continuous gas flow is created directed from the periphery to the center (Fig. 1). And the coolant flow, carrying out heat removal from the electrodes, is created directed from the center to the periphery, i.e. the coolant flow is directed towards the flow of the working oxygen-containing gas.

Removing the dielectric spacers from the discharge zone and installing them along the perimeter of the electrodes between the protruding parts of the plates of adjacent electrodes allows you to align the electric field between the electrodes, to obtain a more uniform distribution of the discharge between them, to increase the volume occupied by the discharge. Shielding (alignment of the electric field) on the outer edges of the ozone generating device increases its reliability and allows you to use the most efficient mode of operation at elevated voltages.

Information sources

1. RF patent No. 2147010, C 01 B 13/11, 2000.

2. RF patent No. 2199487, C 01 B 13/11, 2003.

3. RF patent No. 2046753, C 01 B 13/11, 1995.

Claims (5)

1. A device for generating ozone containing high-voltage and grounded plate electrodes located in a sealed enclosure, having central holes and configured to cool with a coolant, coated on the outside with a dielectric and alternating through one, a power source whose leads are connected to the electrodes, a fitting for supplying an oxygen-containing working gas and coolant and a fitting for removing the coolant and the gas-zone mixture, the electrodes being made of hermetically interconnected parallel plates forming an internal cavity in which jumpers are mounted perpendicularly to the internal surfaces of the plates of the plates, rigidly connecting the plates to each other, and the fittings for supplying the coolant to the electrodes and for removing the coolant from them are connected to the electrode cavity through injectors and collectors made in the form of pipes with holes located at opposite edges of the electrodes, spacing dielectric inserts between the electrodes, characterized in that the electrode plates are Nena with protruding beyond the core portions of the electrodes, and distancing the dielectric insert between the electrodes is removed from the discharge zone and mounted circumferentially between the protruding portions adjacent electrode plates. 2. The device according to claim 1, characterized in that one of the plates of the electrodes is made with protruding beyond the limits of the active zone of the electrodes, ending with a cylindrical rounding with the ability to perform screen functions. 3. The device according to claim 1, characterized in that both plates of the electrodes are made with parts protruding beyond the boundaries of the active zone of the electrodes, ending with a semi-cylindrical rounding with the possibility of performing screen functions. 4. The device according to claim 1, characterized in that the spacing dielectric inserts are made in the form of cylindrical rings with holes. 5. The device according to claim 1, characterized in that the spacing dielectric inserts are made in the form of support rods.

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