JP5427448B2 - Ozone generator - Google Patents

Description

  The present invention relates to an ozone generator that can be suitably used in industrial fields that require ozone such as water and sewage treatment and pulp bleaching.

  As an industrial-scale ozone generator, an ozone generator that uses a silent discharge to ozonize a source gas containing oxygen is known from, for example, Patent Document 1 and Patent Document 2. For example, as shown in FIGS. 1 and 2, the conventional ozone generator has a plurality of ozone generation tubes 4 having an inflow port through which raw material gas flows and an outflow port through which ozonized gas flows out at both ends, A container 9 in which these ozone generation tubes 4 are accommodated in parallel and spaced apart from each other, and supplied with a refrigerant (usually cooling water) A that cools them by contact with each outer peripheral portion of each ozone generation tube 4. And a support hole 11 for supporting each end portion of each ozone generation tube 4 is defined between the refrigerant chamber 1 which is a space to which the refrigerant A is supplied and the gas chamber 5 which is a space to which the refrigerant A is not supplied. The gaps between the pair of tube plates 3 and the ozone generation tubes 4 and the support holes 11 are supported over the entire circumference in a state in which the both ends are protruded toward the space (gas chamber 5) to which the refrigerant A is not supplied. Interposed between each ozone generating tube 4 and each tube plate 3 , An airtight fixture 6 for securing airtight relative to the tube plate 3 of each ozone generating tube 4 by that which was equipped with.

  Here, the airtight fixture 6 is locked to the tube plate 3 and an O-ring 7 that is an annular elastic member respectively arranged so as to block the gaps between the ozone generation tube 4 and the support hole 11 over the entire circumference. Accordingly, a pressing member 15 that presses each O-ring 7 against each gap between the ozone generation tube 4 and the support hole 11 in an airtight manner is provided.

  The refrigerant A is supplied and circulated in the refrigerant chamber 1 via the heat exchanger 8. And since the refrigerant | coolant A is circulated and used and forms a closed pipe line, the upper part of the refrigerant | coolant chamber 1 is open | released to air | atmosphere in order to absorb the expansion | swelling and shrinkage | contraction by a temperature change of a refrigerant | coolant. Stainless steel or the like is used for the piping member for circulating the refrigerant, the ozone generating pipe, and the refrigerant chamber.

  FIG. 2 is a general cross-sectional view in which the ozone generating tube is hermetically penetrated through the tube plate. In FIG. 2, the ozone generating tube 4 penetrating the tube plate 3 from the refrigerant chamber 1 side through the gap 2 is connected to the tube plate 3 from the gas chamber 5 side through the airtight fixture 6 (O-ring 7 and pressing member 15). To be airtightly fixed. Conventionally, as this airtight fixture 6, an annular one corresponding to an ozone generating tube having a circular cross section as shown in FIG. 3 is used. Reference numeral 13 denotes a hole for penetrating and holding the ozone generating tube 4, and reference numeral 14 denotes a locking member such as a bolt and a nut for locking the pressing member to the tube plate 3.

  Ozone generators differ in the number of installed ozone generator tubes depending on their use and the amount of ozone generated, and they are not always mass-produced with the same type of tube arrangement. In general, each product has a different design depending on the application. In such a case, use of the conventional airtight fixture as shown in FIG. 3 causes useless space, and particularly when a large number of ozone generating tubes are arranged, useless space is generated. In particular, when 200 or more ozone generating tubes are installed, there is a problem that the ozone generating device main body becomes larger than necessary.

  In addition, Patent Document 2 shows an example of a hexagonal airtight fixture, but there is no suggestion of the effect of arranging a large number of airtight fixtures, and there is no description of integration. .

JP-A-6-263409 JP-A-9-315803

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to generate ozone that can reduce the mounting pitch of the ozone generator tube and make the ozone generator main body compact. Is to provide a device.

According to the present invention, the following ozone generator is provided.
[1] A plurality of ozone generating pipes having an inlet through which raw material gas flows in and an outlet through which ozonized gas flows out at both ends, and these ozone generating pipes are accommodated in parallel and spaced apart from each other. A container to which a refrigerant for cooling them is contacted with each outer peripheral part of the ozone generation tube, a space to which the refrigerant is supplied, and a space to which no refrigerant is supplied are defined, and each end of each ozone generation tube is supported. A pair of tube plates that are provided with support holes for supporting each end portion in a state of projecting to the space side where the refrigerant is not supplied, and an airtight fixture for airtightly fixing each ozone generating tube to the tube plate, Wherein the airtight fixture is configured to block the gaps between the ozone generation tubes and the support holes from the space side where the refrigerant is not supplied over the entire circumference. Between the tube and each tube plate. A plurality of O-rings arranged at the same time, and a plurality of O-rings and a plurality of the O-rings are simultaneously connected to the entire circumference from the space side where the refrigerant is not supplied by being locked to the tube plate. Monodea and a plate-like member fixed to simultaneously the tube plate said plurality of ozone generating tubes by being integrally formed with pressed against the gap of the support hole is, the plate-like member, said plate The entire surface of the member on the tube plate side is in contact with the tube plate in a state where the entire surface of the tube plate is not supplied with the refrigerant, and each of the plurality of O-rings is An ozone generator that is pressed toward the respective ozone generator tubes and the gaps between the ozone generator tubes and the support holes over the entire circumference by the end portions of the plate-like members on the ozone generator tubes side. .

  According to the present invention, it is possible to increase the installation density of the ozone generating tubes and to make the ozone generating apparatus main body small and compact as compared with the conventional one. Furthermore, since the number of parts used for the ozone generator can be reduced, there is a further effect that the assembly operation process of the ozone generator can be simplified. Therefore, even when it is necessary to change the number of ozone generation tubes according to the application, the reliability of the assembly operation process of the ozone generator is increased and the cost is reduced.

It is a front sectional view of a general ozone generator. It is sectional drawing which shows the aspect which penetrates an ozone generation pipe | tube through a tube sheet airtightly. It is explanatory drawing which shows an example of the annular | circular shaped airtight fixing tool used conventionally. It is explanatory drawing which shows one Embodiment of the airtight fixing tool used for this invention. It is sectional drawing which shows the aspect which penetrates an ozone generation pipe in a tube sheet airtightly with the airtight fixing tool used for this invention.

Next, embodiments for carrying out the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments, and a person skilled in the art can depart from the scope of the present invention. It should be understood that design changes, improvements, and the like can be made as appropriate based on general knowledge of the above.

  The basic configuration of the ozone generator according to the present invention is not different from the conventional one. Referring to FIG. 1 and FIG. 2, a plurality of inlets into which raw material gas flows and outlets through which ozonized gas flows out are provided at both ends. A container 9 in which the ozone generation pipe 4 and these ozone generation pipes 4 are accommodated in parallel with a space between each other and supplied with refrigerant A for cooling them by contact with each outer peripheral portion of each ozone generation pipe 4. And a support hole 11 for supporting each end portion of each ozone generation tube 4 is defined between the refrigerant chamber 1 which is a space to which the refrigerant A is supplied and the gas chamber 5 which is a space to which the refrigerant A is not supplied. The gaps between the pair of tube plates 3 and the ozone generation tubes 4 and the support holes 11 are supported over the entire circumference in a state in which the both ends are protruded toward the space (gas chamber 5) to which the refrigerant A is not supplied. Each ozone generating tube is locked to the tube plate 3 so as to close The is that a gas-tight fixture 6 for securing airtight with respect to the tube plate 3.

  In the above ozone generator, the present invention is characterized in that a plurality of airtight fixtures 10 are integrally formed as shown in FIG. 4 instead of the conventional airtight fixture 6 (see FIG. 3). The ozone generating tube 4 is fixed to the tube plate at the same time. Here, 13 shows a hole for penetrating and holding the ozone generating tube 4.

  This will be described in more detail. FIG. 4 is an explanatory view showing an embodiment of an airtight fixture used in the present invention. In FIG. 4, the airtight fixture 10 is configured to fix a plurality of ozone generation tubes to the tube plate at the same time as compared with the conventional case where one airtight fixture is used for one ozone generation tube. , It is configured integrally. In other words, it can be said that a plurality of airtight fixtures are integrated into one airtight fixture so as to correspond to a plurality of ozone generating tubes.

  In the embodiment of FIG. 4, the airtight fixture 10 corresponds to five ozone generation tubes, but it is needless to say that the airtight fixture 10 is not limited to this. An airtight fixture having a structure capable of supporting a larger number of ozone generating tubes is desirable from the viewpoint of reducing the number of parts used. On the other hand, considering the difficulty and manufacturing cost of manufacturing an airtight fixture, The one corresponding to the ozone generating tube in the range of 1 to 5 is preferable.

  By using this airtight fixture 10, it is possible to increase the installation density of the ozone generating tube as compared with the conventional airtight fixture. Further, in this airtight fixture 10, conventionally, when a plurality of airtight fixtures are used, adjacent bolts, nuts, washers and the like are shared, and the number of necessary airtight fasteners is reduced. Can do. As a result, the number of parts used in the ozone generator can be reduced. This means that the assembly process of the ozone generator according to the present invention can be simplified. Furthermore, the reliability of the assembly operation of the ozone generator is increased and the cost is reduced.

  From the viewpoint of preventing cost increase by using a general-purpose product as much as possible, for example, as shown in FIG. 5, each air gap between the ozone generating tube 4 and the support hole 11 is used as the airtight fixture 10. 2 and an annular elastic member 7 such as an O-ring arranged so as to cover the entire circumference, and the elastic member 7 by being locked to the tube plate 3 to each of the ozone generating tube 4 and the support hole 11. It is preferable to include a plate-like member that is a pressing member 15 that presses against the gap 2 in an airtight manner, and a bolt and a nut that are locking members 14 that lock the pressing member 15 to the tube plate 3.

  The material of the hermetic fixing tool is not particularly limited, but it is preferable to use stainless steel or the like, similarly to the piping member for circulating the refrigerant, the ozone generating pipe, and the refrigerant chamber.

  The ozone generator according to the present invention can be suitably used in industrial fields that require a large amount of ozone, such as water and sewage treatment and pulp bleaching.

DESCRIPTION OF SYMBOLS 1 Refrigerant chamber 2 Crevice 3 Tube plate 4 Ozone generating tube 5 Gas chamber 6 Airtight fixture 7 O-ring 8 Heat exchanger 9 Container 10 Airtight fixture 13 Hole for penetrating and holding the ozone generating tube 14 Locking member 15 Pressing Element

Claims (1)

A plurality of ozone generator tubes having an inlet through which raw material gas flows into both ends and an outlet through which ozonized gas flows out;
A container to which these ozone generation tubes are accommodated in parallel with a space between each other and supplied with a coolant for cooling them by contact with each outer peripheral portion of each ozone generation tube;
A state in which a space for supplying the refrigerant is separated from a space for which the refrigerant is not supplied, and support holes for supporting both ends of each ozone generation tube are provided, and each end protrudes toward the space where no refrigerant is supplied. a pair of tube plates for supporting in,
An airtight fixture for airtightly fixing each ozone generating tube to the tube plate;
An ozone generator comprising:
The airtight fixture is arranged between each ozone generation tube and each tube plate so as to block the gap between each ozone generation tube and each support hole from the space side where the refrigerant is not supplied over the entire circumference. A plurality of O-rings and the plurality of O-rings are simultaneously inserted into the gaps between the ozone generation tubes and the support holes from the space side where the refrigerant is not supplied by being locked to the tube plate, over the entire circumference. Monodea and a plate-like member fixed to simultaneously the tube plate said plurality of ozone generating tubes by being integrally formed with the pressing is,
The plate-like member is locked to the tube plate in a state where the entire surface of the plate-like member on the tube plate side is in contact with a surface of the tube plate on which the refrigerant is not supplied.
Each of the plurality of O-rings is directed to each ozone generation tube side and to each gap side of the ozone generation tube and the support hole over the entire circumference by an end of the plate-like member on the ozone generation tube side. Ozone generator that is pressed .

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