JP2000319953A - Oxygen dissolution shield - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oxygen dissolving shield capable of excellently covering a water surface in a stable floating state and capable restraining manufacturing and carrying costs. SOLUTION: This oxygen dissolving shield is constituted so as to have a shield 2 being formed of an oxygen impermeable material and arranging a collar 3 on an outer peripheral surface 2a. The shield 2 is provided with a floating body part 4 being positioned above the collar 3 and having the inside formed in a hollow shape and a weight part 6 being positioned under the collar 3 and housing a weight inside, and the weight part 6 is formed so that the volume becomes smaller than the floating body part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to, for example, an open-type water tank water surface, and is disposed so as to float on the water surface and cover the water surface, thereby dissolving oxygen in the air from the water surface into water. The present invention relates to an oxygen dissolving shielding member for preventing the occurrence of a dissolution.

[0002]

2. Description of the Related Art As this kind of oxygen dissolving shield, for example, one having a number of resin balls floating on a water surface is known. However, in such a resin ball, a gap is formed between the adjacent balls, and it is possible to move independently of the other balls. Ineffectiveness,
For the reasons described above, it has been difficult to obtain good shielding performance for oxygen in the air to penetrate the water surface.

[0003] Therefore, a hemispherical material made of a thin plate slightly smaller than the disk is heat-bonded to both surfaces of the disk-shaped resin thin plate to form a flanged spherical body (Saturn-like). It was considered to float (see Japanese Patent Application Laid-Open No. 8-193773).

[0004] When a large number of such spherical bodies with a flange are floated on the water surface, the flange portions overlap each other and can be arranged on the water surface without any gap. By acting so as to suppress the vertical movement, it is possible to suppress the generation of the water surface wave. This makes it possible to favorably prevent oxygen in the air from dissolving into the water surface.

[0005]

In order for such an oxygen dissolving shield made of a spherical body with a flange to function well, a well-balanced surface of the disk, including the flange, is in contact with the surface of the water. Need to float. For this reason, in this flanged spherical body, a float for securing buoyancy is provided in one thin plate hemisphere portion, and a balancing resin ball is built in the other hemisphere as a weight.

However, since the oxygen dissolving shield thus formed has a vertically symmetrical shape with respect to the flange, the hemisphere with the built-in weight is located above, and the hemisphere without the built-in weight is positioned above. So-called vertical fixing errors, which are located below the water surface, are likely to occur. When such an upper and lower fixing error occurs, the floating state becomes unstable, and it has been difficult to cover the water surface well.

Furthermore, the oxygen dissolving shield formed as described above is manufactured by bonding both sides of a disk-shaped resin thin plate to both sides of a thin hemisphere made of a thin sheet by heat fusion bonding on both sides, which results in unevenness in quality and considerable manufacturing time. As a result, the production unit price increases, and it is necessary to transport and cure the soft hemisphere,
The transportation cost was increased.

The present invention has been made in view of the above circumstances, and has a stable floating state, is capable of satisfactorily covering the water surface, and is capable of suppressing production and transportation costs. It is an object to provide a shield.

[0009]

Means for Solving the Problems To solve the above problems, the present invention employs the following means. That is,
The oxygen dissolving shield according to claim 1, wherein the oxygen dissolving shield is arranged so as to be floated on a water surface and cover the water surface, thereby preventing dissolution of oxygen in the air from the water surface into the water. A shielding body formed of an oxygen-impermeable material and having a flange provided on an outer peripheral surface thereof. The shielding body is located above the flange and has a hollow inside. And a floating body portion into which aquarium water is difficult to flow, and a weight portion which is located below the flange and has a weight stored therein, and wherein the weight portion is It is characterized in that its volume is smaller than that of the floating body.

With this configuration, in the oxygen dissolving shield, the buoyancy of the upper portion of the flange can be made sufficiently larger than that of the lower portion of the flange. An upper and lower fixing error is less likely to occur.

The oxygen dissolving shield according to a second aspect is the oxygen dissolving shield according to the first aspect, wherein the shield main body includes:
An upper member integrally formed with the floating body and a part of the flange, and a lower member fitted below the upper member, wherein the upper member has an interior forming the floating body. The lower member comprises a hollow hemisphere, and a folded plate constituting a part of the flange is formed so as to protrude radially outward of the hemisphere from a periphery of the hemisphere. A bottomed tubular body, a fitting portion provided on the upper end edge of the tubular body and formed so as to be fitted inside the periphery of the hemisphere, and A flange component that is formed so as to protrude outward in the radial direction of the body, and that is integrated with the turnback plate to form the flange. Is provided so as to protrude downward from the bottom portion of the.

With this configuration, in this oxygen dissolving shield, the upper member and the lower member are fitted to each other, so that the shield main body can be easily formed while providing waterproofness at the joint.

According to a third aspect of the present invention, there is provided the oxygen dissolving shield according to the second aspect, wherein the hemisphere has a concave portion provided from the folded plate side to the top of the hemisphere. A plurality of recesses are provided at predetermined intervals in a circumferential direction around the top of the hemisphere.

With such a configuration, in the oxygen dissolving shield, the concave portion functions as a rib for reinforcing the hemisphere.

According to a fourth aspect of the present invention, there is provided the oxygen dissolving shield according to the second or third aspect, wherein the floating body has a communication hole communicating between the inside and the outside of the floating body. It is characterized by:

With this configuration, in the oxygen dissolving shield, when the shield main body is put on the water surface, the pressure when the air in the shield main body expands or contracts due to a temperature change can be relieved. it can.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are diagrams schematically showing an embodiment of the present invention, in which reference numeral 1 indicates an oxygen dissolving shield. The oxygen dissolving shield 1 is disposed so as to float on an open heat storage water tank water surface or the like so as to cover the water surface, thereby preventing the dissolution of oxygen in the air from the water surface into the water and preventing oxygen from dissolving. A flange 3 is provided on an outer peripheral surface 2a of a shielding body 2 made of a transparent material.

The shield body 1 is located above the flange 3 and has a hollow body 4 having a hollow inside, and a weight 6 located below the flange 3 and having a weight 5 housed therein. Is provided. The weight 6 has a smaller volume than the floating body 4.

As shown in FIG. 3, the shielding body 1 has an upper member 7 integrally formed with a floating body 4 and a flange 3, and a lower member fitted below the upper member 7. And the member 8. The upper member 7 and the lower member 8 are both integrally molded.

The upper member 7 constitutes the floating body 4 and includes a hemisphere 9 having a hollow inside, and a folded plate 10 constituting a part of the flange 3.
Are formed so as to protrude radially outward of the hemisphere 9 from the peripheral edge 9 a of the hemisphere 9.

At the top 9b of the hemisphere 9, there is provided a communication hole 11 communicating the inside and the outside of the hemisphere 9. Also, the hemisphere 9
As shown in FIG. 4, the concave portion 12 has a concave portion 12 extending from the folded plate 10 side to the top portion 9b in a circumferential direction around the top portion 9b of the hemisphere 9 as shown in FIG.
There are a total of four locations every °.

On the other hand, as shown in FIG. 3 and FIG. 5, the lower member 8 is provided on a cylindrical body 13 having a bottom and a top end 13a of the cylindrical portion 13 and at the same time a peripheral edge 9a of the hemisphere 9 is provided. It has a fitting portion 14 formed so as to be fitted inside, and a flange forming portion 15 formed so as to protrude radially outward of the tubular body 13 from the fitting portion 14. Tsuba constituent part 15
Has a configuration in which a step portion 15b is provided on the upper surface 15a, and the folding plate 10 is fitted to the step portion 15b, whereby the flange 3 is formed integrally with the folding plate 10. I have. In addition, the weight portion 6 is provided at the bottom 1 of the cylindrical body 13.
3b is provided so as to project downward.

As shown in the figure, the cylindrical body 13 contains a pressing plate 16 for preventing the weight 5 stored in the weight portion 6 from jumping out. The holding plate 16 is formed of a lightweight foamed resin material.

The oxygen dissolving shield 1 constructed as described above.
When manufacturing the lower member 8, the weight 5 is stored in the weight portion 6 of the lower member 8, the holding plate 16 is stored in the cylindrical body 13, and the fitting portion 14 is attached to the peripheral edge 9 a of the upper member 7. The folded plate 10 is fitted into the inside, and the folded plate 10 is fitted into the step portion 15b of the flange constituting portion 15. This allows
The shield body 2 and the flange 3 are formed, and the oxygen dissolution shield 1
Is completed.

When the oxygen dissolving shield 1 thus manufactured is used, for example, to shield oxygen from dissolving from the surface of the water tank, water is first taken in and out of the water tank. A net for preventing the outflow of the oxygen dissolving shield 1 is attached to the outflow inlet, and the number of packages corresponding to the number calculated in advance is supplied several times from the manhole of the water storage tank. At this time, every time the injection is performed, the vicinity of the injection port is ruffled, and the injected oxygen dissolving shield 1 is moved toward the surrounding wall. By repeating this series of operations, the flange 3 is overlapped with the flange 3 of the adjacent oxygen dissolution shield 1 by utilizing the strong floating performance exerted by the air in the floating body 4. The water surface is evenly covered with the oxygen dissolving shield 1 so that In this way, the oxygen dissolving shield 1 can evenly shield the water surface of the water storage tank, and can significantly reduce oxygen in the air that dissolves into the water from the water surface.

According to the oxygen dissolving shield 1 described above, the floating body 4 is formed above the flange 3, the weight 6 is formed below the flange 3, and the volume of the weight 6 is reduced. , The buoyancy of the floating body portion 4 can be made sufficiently larger than that of the weight portion 6, and there is no concern that a vertical erroneous fixing may occur when the floating body portion 4 is put on the water surface. As a result, a stable floating state can be realized, and the water surface shielding performance can be improved. In addition, since the volume of the floating portion 4 is increased, the heat insulation effect of the air in the floating portion 4 is very large. By uniformly covering the water surface with the oxygen dissolving shield 1, heat loss can be greatly reduced, and In the heat insulation work of the tank, the heat insulation work of the ceiling, which is the most expensive, can be omitted, and the construction cost can be reduced.

In the oxygen dissolving shielding body 1 described above, the upper member 7 and the lower member 8 are fitted to each other,
Since the shield main body 1 and the flange 3 are formed, unlike the related art, it is possible to manufacture without performing operations such as heat fusion, and it is possible to facilitate the manufacture as compared with the related art. Products having a certain quality can be manufactured at low cost. Furthermore, if the upper member 7 and the lower member 8 are assembled on site, a plurality of upper members 7 or lower members 8 can be stacked and packed. In this case, since the upper member 7 and the lower member 8 are formed of thin plates, they do not become bulky even when they are stacked, and the size of the packaging for transportation can be dramatically reduced.
Transportation costs can be reduced.

Further, in the oxygen dissolving shielding body 1 described above, the concave portion 12 provided in the hemisphere 9 functions as a rib for reinforcing the hemisphere 9, so that the strength of the hemisphere portion can be improved as compared with the related art. It is possible to simplify the transfer curing of the hemisphere portion.

Further, the above-mentioned oxygen dissolving shield 1 reduces the pressure generated by the expanded air in the floating body 4 by the communication hole 11 provided in the floating body 4 when the temperature of the water in the charged water tank is high. Can be eased. Thus, it is possible to prevent the inflated air in the floating body portion 4 from affecting the fitting and joining of the upper member 7 and the lower member 8.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and the form and the like can be changed. For example, the shield body 2 and the flange 3 may be formed in a regular hexagonal shape in plan view. Also in this case, by arranging the oxygen dissolving shields 1 on the water surface, the water surface can be covered evenly.

[0031]

As described above, according to the oxygen dissolving shield of the first aspect, the floating body is formed above the flange,
Since the weight portion is formed below the flange and the volume of the weight portion is smaller than the volume of the floating body portion, the buoyancy of the floating body portion can be made sufficiently larger than the weight portion, and There is no concern that upper and lower fixing errors will occur when inserted. As a result, a stable floating state can be realized, and the water surface shielding performance can be improved. In addition, since the volume of the floating body has been increased, the heat insulation effect of the air inside the floating body is very large, and by uniformly covering the water surface with this oxygen dissolving shield, the heat loss can be greatly reduced, and the insulation work of the water storage tank In this case, it is possible to omit the most expensive thermal insulation work for the ceiling, thereby reducing the construction cost.

In the oxygen dissolving shield according to the second aspect, since the shield main body and the flange are formed by fitting the upper member and the lower member, work such as heat fusion is performed unlike the conventional case. Therefore, it is possible to manufacture the semiconductor device without any difficulty, and to simplify the manufacturing process as compared with the related art, and to manufacture a product having a certain quality at a low cost. Furthermore, if the upper member and the lower member are assembled on site, a plurality of upper members or lower members can be stacked and packed. In this case, if the upper member and the lower member are formed of thin plates, they do not become bulky even when they are stacked, so that the size of the packaging for transportation can be dramatically reduced and the transportation cost can be reduced. it can.

According to the oxygen dissolving shield according to the third aspect,
Since the concave portion provided in the hemisphere functions as a rib for reinforcing the hemisphere, the strength of the hemisphere portion can be improved as compared with the related art, and the transfer curing of the hemisphere portion can be simplified.

In the oxygen dissolving shield according to the fourth aspect, the communication hole provided in the floating body reduces the pressure generated by the expanded air in the floating body when the water temperature in the charged water tank is high. Can be. Thus, it is possible to prevent the inflated air in the floating body from affecting the fitting and joining of the upper member and the lower member.

[Brief description of the drawings]

FIG. 1 is an elevational view of an oxygen dissolving shield schematically showing one embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an exploded sectional view of the same.

FIG. 4 is a plan view of the upper member shown in FIG.

FIG. 5 is a plan view of a lower member shown in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oxygen dissolving shield 2 Shield main body 2a Outer peripheral surface 3 Flange 4 Floating body 5 Weight 6 Weight 7 Upper member 8 Lower member 9 Hemisphere 9a Peripheral edge 10 Folding plate 11 Communication hole 12 Depression 13 Cylindrical body 13a Upper edge 13b Bottom 14 Fitting part 15 Flange constituent part 15a Upper surface 15b Step

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shunichi Kato 1-6-1 Kyobashi, Chuo-ku, Tokyo Inside TEPCO Real Estate Management Co., Ltd. (72) Inventor Morihiko Ota 1-6-1 Kyobashi, Chuo-ku, Tokyo Within TEPCO Real Estate Management Co., Ltd. (72) Takayoshi Kano, Inventor 1-6-1 Kyobashi, Chuo-ku, Tokyo Inside TEPCO Real Estate Management Co., Ltd. (72) Inventor Yoji Oku 1153-26 Komahane, Sowa-cho, Sarushima-gun, Ibaraki Prefecture (72) Inventor Keijiro Suzuki 1471-17 Hasunuma, Omiya City, Saitama Prefecture (72) Inventor Toshinobu Furuki 4-5 Hirao Sanshozuka, Yamashiro Town, Soraku-gun, Kyoto Prefecture No. 3 Shimizu Construction Co., Ltd. (72) Inventor Hiroyuki Fujiwara Shimizu Construction Co., Ltd. 2-3 2-3 Shibaura, Minato-ku, Tokyo

Claims (4)

[Claims] 1. An oxygen dissolving shield which is floated on a water surface and disposed so as to cover said water surface, thereby preventing dissolution of oxygen in air from said water surface into water. A shielding body formed of a material and having a configuration in which a flange is provided on an outer peripheral surface, the shielding body being located above the flange and having a hollow inside formed therein. And a weight portion which is located below the flange and has a weight stored therein. The weight portion has a smaller volume than the floating body portion. An oxygen dissolving shield characterized by the following. 2. The oxygen dissolving shield according to claim 1, wherein the shield main body includes an upper member integrally formed with the floating body and a part of the flange, and a lower part of the upper member. The upper member is provided with a hollow hemisphere inside the floating body portion, and a folded plate forming a part of the flange is formed from a periphery of the hemisphere. The lower member is provided on a bottomed tubular body, and is provided at an upper end edge of the tubular body, and the hemisphere is formed so as to protrude outward in the radial direction of the hemisphere. A fitting portion formed so as to be fittable inside the peripheral edge of the cylindrical member, and formed so as to protrude outward in the radial direction of the tubular body from the fitting portion, and integrated with the folded plate to form And a flange constituting part forming a flange, and the weight portion is the cylindrical body An oxygen dissolving shield characterized in that it is provided so as to protrude downward from the bottom of the oxygen dissolving shield. 3. The oxygen dissolving shield according to claim 2, wherein the hemisphere has a concave portion provided from the folded plate side to a top of the hemisphere. Characterized by being provided at predetermined intervals in a circumferential direction centering on the top of the oxygen dissolving shield. 4. The oxygen dissolving shield according to claim 2, wherein a communication hole communicating between the inside and outside of the floating body is formed in the floating body.