JP4604947B2 - Bubble eraser - Google Patents

Description

  The present invention relates to a bubble erasing device that eliminates bubbles generated on a water surface and ejected from an opening of a water channel.

  For example, in a power plant, seawater is used for cooling various devices constituting the power generation facility, and a water channel is provided for intake and drainage of seawater. Most of such water channels are culvert type, and the water channel is provided with an air vent opening. Bubbles are generated in the seawater flowing through this water channel for various reasons. In particular, a large amount of foam is generated in the channel from early spring to autumn, and a large amount of foam may be ejected from the opening of the channel to the ground.

  FIG. 6 is an explanatory view of a phenomenon in which bubbles are ejected from the opening of the upper wall of the water channel to the ground. Sea water 12 flows through the culvert channel 11, and the bubbles 13 are caused to flow downstream by the flow of the sea water 12. In this case, the bubbles 13 are ejected to the ground portion through the opening 15 of the upper surface wall 14 of the water channel 11 due to the tide level or the like. If the bubbles 13 overflowing on the ground are left unattended, not only the aesthetics but also the odor is generated, and the peripheral equipment may be corroded. Therefore, the generated bubbles 13 are erased.

  In order to efficiently erase a large amount of bubbles floating on the sea surface, the inside of the separation tank that separates the bubbles into gas and liquid is held at a pressure lower than the atmospheric pressure by suction means, and the bubbles are sucked into the separation tank through the suction line. In some separate tanks, the sucked bubbles are liquefied, stored and discharged (see, for example, Patent Document 1).

In addition, weirs are provided in the water channel to accumulate bubbles, and the bubbles accumulated in the weirs are sucked into a steam ejector via a suction pipe, and the bubbles are destroyed and defoamed with the steam ejector (patent) Reference 2).
JP 2000-342905 A Japanese Utility Model Publication 2-70702

  However, in the thing of patent document 1, facilities, such as a separate tank and a suction means, are needed, and the motive power for attracting | sucking a bubble to a separate tank is needed. On the other hand, even the thing of patent document 2 requires facilities, such as a weir and a steam ejector which accumulate | store a bubble, and the motive power for operating a steam ejector is needed. Moreover, since the timing of bubble generation is not known, if the operation timing of these facilities is not properly performed, the bubbles may not be appropriately erased.

  An object of the present invention is to provide a defoaming apparatus that does not require power for defoaming and can erase bubbles in a timely manner with relatively simple equipment.

  The foam eliminator according to the invention of claim 1 is installed on the bottom surface of the car and is generated on the water surface so as not to be immersed in water in an opening of a culvert type water channel for discharging water. A mesh member that crushes bubbles that enter and passes fine bubbles that could not be crushed, a filter that crushes bubbles that have passed through the mesh member and allows fine bubbles that have not been crushed, and is stored in the basket. And a plurality of spheres that liquefy the bubbles that have passed through the filter.

  According to a second aspect of the present invention, there is provided a defoaming apparatus comprising: a car that is installed on a bottom surface and a side surface of the car, and is generated on the water surface; A net-like member that crushes the bubbles entering the inside and allows the fine bubbles that could not be crushed to pass through, and a plurality of spheres that are stored in the cage and crushed into a liquid by crushing the bubbles that have passed through the net-like member. It is characterized by that.

  According to the present invention, the foam entering the car is crushed with a mesh member, and the foam that has not been crushed is crushed by the rotation of a plurality of spheres in the car to make the foam liquid. The bubbles can be eliminated with relatively simple equipment without the need for power. Moreover, since it acts so that the bubble which entered the cage | basket may be crushed at that time, a bubble can be erase | eliminated appropriately irrespective of the generation | occurrence | production timing of a bubble.

  Embodiments of the present invention will be described below. FIG. 1 is an exploded perspective view showing a configuration of a foam erasing apparatus according to a first embodiment of the present invention, and FIG. 2 is an opening of a culvert-type water channel according to the foam erasing apparatus according to the first embodiment of the present invention. It is sectional drawing at the time of installing in.

  In FIG. 1, the defoaming apparatus according to the first embodiment has a mesh member 17 disposed on the bottom surface of a car 16, a filter 18 disposed on the mesh member 17, and a plurality of filters 18 disposed on the filter 18. A single sphere 19 is accommodated. The car 16 is formed as a rectangular parallelepiped with each surface formed by a mesh, and the mesh member 17 has a mesh smaller than the mesh of the car 16.

  As shown in FIG. 2, the bubble erasing device is installed so that the cage 16 is not immersed in the seawater 12, for example, in the opening 15 provided in the upper surface wall 14 of the culvert-type water channel 11 that discharges seawater. Therefore, most of the bubbles 13 generated on the surface of the seawater 12 enter the car 16 from the bottom surface of the car 16. The bubbles 13 entering the car 16 are first crushed by the mesh member 17 with a mesh member 17 having a mesh size smaller than that of the cage 16. The fine bubbles that could not be crushed by the mesh member 17 are further crushed by the filter 18, and the bubbles that could not be crushed by the filter 18 are crushed on the surfaces of the plurality of spheres 19. In other words, the sphere 19 rotates due to the blowing of bubbles from below and the weight of the sphere 19, and the bubbles are crushed by rubbing the surfaces of the adjacent spheres 19 due to the rotation.

  FIG. 3 is an explanatory diagram of a defoaming mechanism in the defoaming apparatus. The bubbles 13 generated on the surface of the seawater 12 pass through the mesh member 17 and become bubbles 13A smaller than the mesh of the mesh member 17. That is, bubbles larger than the mesh of the mesh member 17 are crushed by the mesh member 17, and bubbles 13 A smaller than the mesh of the mesh member 17 pass through the mesh member 17. Next, the fine bubbles 13 </ b> A that could not be crushed by the mesh member 17 pass through the filter 18 and become bubbles 13 </ b> B smaller than the filter particle size of the filter 18. That is, bubbles larger than the filter particle size of the filter 18 are crushed by the filter 18, and bubbles 13 B smaller than the filter particle size of the filter 18 pass through the filter 18.

  The bubbles 13B that could not be crushed by the filter 18 are crushed on the surfaces of the plurality of spheres 19. That is, when the bubble 13B is blown up from below, the sphere 19 temporarily rises upward and tries to move upward. On the other hand, when the bubble 13B is blown down, the sphere 19 tends to move downward due to its own weight. The sphere 19 is rotated by the force acting on the sphere 19, and the surface of the adjacent sphere 19 is rubbed with the rotation. Thereby, the fine bubbles 13B that have passed through the filter 18 are crushed. The bubbles 13B crushed by the rotation of the sphere 19 become the liquid 20 and are returned to the lower water channel 11.

  Here, irregularities may be provided on the surface of the sphere 19. By providing the unevenness, the efficiency of crushing the bubbles 13B can be improved. The number of the spheres 19 is determined according to the amount of the bubbles 13B that have passed through the filter 18. Further, although the mesh member 17 is provided on the bottom surface of the car 16, the mesh member 17 may be provided not only on the bottom surface of the cage 16 but also on the side surface.

  According to the first embodiment, the spherical body 19 is installed in the car 16, and the bubbles are crushed by rotating using the force of the bubbles blowing out. Therefore, the power for eliminating the bubbles is not required. Easily eliminate bubbles with simple equipment. In addition, the bubbles can be erased in real time according to the generation timing of the bubbles. In addition, since the number of the spheres 19 can be selected according to the amount of bubbles ejected, the bubbles can be erased according to the amount of bubbles ejected.

  Next, a second embodiment of the present invention will be described. FIG. 4 is an exploded perspective view of the foam erasing apparatus according to the second embodiment of the present invention, and FIG. 5 is a diagram showing the foam erasing apparatus according to the second embodiment of the present invention installed at the opening of a culvert type waterway. It is sectional drawing in the case.

  This second embodiment is different from the first embodiment shown in FIG. 1 in that a net-like member 17 is provided on the bottom and side surfaces of the car 16, the filter 18 is omitted, and a part of the car 16 is seawater. It is soaked in and installed.

  In FIG. 4, the defoaming apparatus according to the second embodiment is configured by arranging a mesh member 17 on the bottom and side surfaces of a car 16 and housing a plurality of spheres 19 in the car 16. The car 16 is formed as a rectangular parallelepiped with each surface formed by a mesh, and each mesh member 17 has a mesh smaller than the mesh of the car 16.

  As shown in FIG. 5, the foam eliminator is installed, for example, so that a part of the cage 16 is immersed in the seawater 12 in the opening 15 provided in the upper surface wall 14 of the underwater channel 11 that discharges seawater. Is done. Thereby, the spherical body 19 of the cage | basket | car 16 immersed in the seawater 12 receives the force of the flow of seawater, and rotates. Further, the bubbles 13 generated on the surface of the seawater 12 enter the car 16 from the side surface of the car 16. The bubbles 13 entering the car 16 are crushed by the mesh member 17, and the fine bubbles that cannot be crushed by the mesh member 17 are crushed on the surfaces of the plurality of spheres 19. That is, the sphere 19 in the cage 16 is rotated by the flow of the seawater 12, and bubbles are crushed by rubbing on the surface of the adjacent sphere 19 accompanying the rotation.

  Also in the second embodiment, irregularities may be provided on the surface of the sphere 19. By providing the unevenness, the efficiency of crushing the bubbles 13B can be improved. The number of the spheres 19 is determined according to the amount of the bubbles 13B that have passed through the filter 18. Also, the location of the foam eliminator is not necessarily the opening 15 of the water channel 11. You may make it attach to the upper surface wall 14 in the water channel 11 away from the opening part 15. FIG.

  According to the second embodiment, since the sphere 19 is installed in the car 16 and the sphere 19 is rotated using the force of flowing seawater to crush the bubbles, power for eliminating the bubbles is not required. Bubbles can be eliminated with relatively simple equipment. In addition, the bubbles can be erased in real time according to the generation timing of the bubbles.

The disassembled perspective view which shows the structure of the foam eliminating apparatus concerning the 1st Embodiment of this invention. Sectional drawing at the time of installing the foam eliminating apparatus concerning the 1st Embodiment of this invention in the opening part of a culvert type waterway. Explanatory drawing of the mechanism of the foam elimination in the foam elimination apparatus concerning the 1st Embodiment of this invention. The disassembled perspective view of the foam eliminating apparatus concerning the 2nd Embodiment of this invention. Sectional drawing at the time of installing the foam eliminating apparatus concerning the 2nd Embodiment of this invention in the opening part of a culvert type waterway. Explanatory drawing of the phenomenon which a bubble spouts from the opening part of the conventional water channel to the above-ground part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Waterway, 12 ... Seawater, 13 ... Bubble, 14 ... Top wall, 15 ... Opening, 16 ... Cage, 17 ... Reticulated member, 18 ... Filter, 19 ... Sphere, 20 ... Liquid

Claims (2)

Whether it is installed so as not to be immersed in water at the opening of a culvert channel that discharges water,
A net-like member that is installed on the bottom surface of the car and that generates fine bubbles that have not been able to be crushed while crushing the foam that is generated on the water surface and enters the car,
A filter that crushes bubbles that have passed through the mesh member and allows finer bubbles that have not been crushed to pass through, and
A bubble erasing apparatus comprising: a plurality of spheres that are crushed and made liquid by rubbing bubbles that have been stored in the cage and passed through the filter. Whether a part of the channel is immersed in seawater in a culvert channel that discharges water,
A net-like member that is installed on the bottom and side surfaces of the car and that passes through fine bubbles that could not be crushed while crushing the foam generated on the water surface and entering the car;
A bubble erasing apparatus comprising: a plurality of spheres that are crushed and made liquid by crushing bubbles that are stored in the cage and pass through the mesh member.

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