JP3666069B2 - Water storage tank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a pressure-type water tank connected to a water supply main of a transmission and distribution facility. In an emergency such as an earthquake disaster, the water storage is shut off from the water main and used as a water supply source for drinking water or fire-fighting water. It relates to the tank.
[0002]
[Prior art]
Pressure-type water tanks that are shut off from the water mains and used as water supply sources for drinking water and fire extinguishing water in the event of an emergency such as an earthquake disaster, generally have a cylindrical cylinder with both ends sealed vertically. A cylindrical water tank, a horizontal cylindrical water tank with a cylindrical cylinder sealed at both ends, or a U-shaped cylindrical water tank with a cylindrical cylinder sealed at both ends in a U-shape The inflow and outflow pipes connected to the high-pressure buried water mains are connected to both ends of the sealed cylindrical cylinder, and the tap water flowing in from the water mains is stagnant in the reservoir in normal times. It was formed so that it would flow out to the water main.
[0003]
[Problems to be solved by the invention]
However, since these water tanks are often installed buried in the ground, when installing large water tanks, it is difficult to dig deep in the ground with a cylindrical water tank. The shape-type water tank does not require deep digging work, but it requires a long and narrow burial site that is inefficient in terms of site, and the U-shaped cylindrical water tank has a large volume of water stored in a relatively small site. Although the tank can be installed efficiently, there are still idle sites between the ends of the U-shape, and these conventional water tanks all receive the high water pressure of the water mains. Both ends of the sealed cylindrical body had to be formed into a robust pressure-resistant structure such as a semi-ellipsoidal end plate.
[0004]
In addition, when the cylindrical body shape, which is a shape excellent in pressure-resistant structure, is used as the body of a rectangular tube with excellent storage capacity, when trying to form a rectangular annular water tank that is highly efficient in terms of site, capacity, There is a concern that stagnant water called dead water may be generated at locations where the direction of water flow changes greatly, such as a rectangular corner of a water tank corner or an inlet / outlet pipe attachment portion of the water tank.
[0005]
The present invention solves the above-mentioned problems, does not cause stagnant water called dead water in the water tank, and has an economical structure that eliminates the need for a robust end plate or the like that is highly efficient in terms of capacity against the site. It is intended to provide a pressure-type large-capacity water tank connected to the water tank.
[0006]
[Means for Solving the Problems]
The water storage tank of the present invention is formed in a rectangular ring shape by connecting rectangular cylinders, provided with a wall body that partitions one part of the annular water channel so as to be orthogonal to the axis of the rectangular cylinder body, and the partition wall body An inflow pipe connected to the upstream side of the water main pipe is attached to the square cylinder wall of one annular water channel, and an outflow pipe connected to the downstream side of the water main pipe to the square cylinder wall of the other annular water channel To form a water storage tank with an annular flow channel attached to the inlet, outlet and corner where the water flow direction of the water storage tank is greatly changed, and to guide the direction of changing the flow path by dividing the water flow, A plurality of rectifying plates made up of rectangular flat plates or curved plates whose extending length, that is, the overhanging width gradually increases in the traveling direction, are installed in parallel along the flowing water direction.
[0007]
In addition, when a cylindrical body such as a cylindrical body is connected to form a ring-shaped annular water channel, the water storage tank is provided with a wall body that partitions one part of the annular water channel so as to be orthogonal to the axis of the cylindrical body In addition, an inflow pipe connected to the upstream side of the water main pipe is attached to the cylindrical wall of one annular water channel with the partition wall interposed therebetween, and the downstream side of the water main pipe is attached to the cylindrical wall of the other annular water channel. Attach the outlet pipe to be connected to form a water tank in the annular water channel, and tap water on the upstream side of the water main pipe from the inlet pipe attached to the cylindrical wall on one side of the annular water channel with the partition wall in between. The ring-shaped annular water channel connecting the cylinders is allowed to flow in one direction, and the wall of the partition is sandwiched between the outflow pipe attached to the cylindrical wall on the other side of the annular water channel and stagnate to the downstream side of the water main It forms so that it may flow out without.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described based on the drawings from FIG. 1 to FIG.
In the drawings, 1 is a water storage tank, 2 is a water main, 3 is an inflow pipe, 4 is an outflow pipe, 11 is an annular water channel, and 13 is a partition wall.
[0009]
The water storage tank 1 is formed by forming a ring-shaped annular water channel 11 connecting cylinders such as a rectangular tube or a cylindrical body with a concrete structure, a steel structure, or a structure combining these, and the annular water channel. 11 is provided with a wall 13 made of a thin stainless steel plate or the like that partitions one part of the steel plate 11, and is made of a steel pipe that is connected to the upstream side of the water main pipe 2 to the cylindrical wall of one annular water channel 11 with the wall 13 of the partition interposed therebetween. And an outflow pipe 4 made of steel pipe or the like connected to the downstream side of the water main pipe 2 is attached to the cylindrical wall of the other annular water channel 11.
[0010]
Further, the water tank 1 is configured such that the high-pressure tap water of the water main 1 is placed on the cylindrical wall on one side of the annular water channel 11 with the partition wall 13 sandwiched from the upstream side of the water main 1 partitioned by the valve 5. It flows into the annular water channel 11 of the water storage tank 1 through the attached inflow pipe 3, flows in the annular water channel 11 in one direction, and is attached to the cylindrical wall on the other side of the annular water channel 11 with the partition wall 13 interposed therebetween. It is formed so as to flow out without stagnation through the outflow pipe 4 to the downstream main water pipe 2 partitioned by the valve 5.
[0011]
The water tank 1 formed as described above uses an annular channel 11 in which tap water is constantly replaced as a tap water transmission / distribution facility in normal times, and supplies emergency water by drawing out stored water from a manhole (not shown) in an emergency. Use as a facility. If the on-off valves 6 and 7 provided in the inflow and outflow pipes 3 and 4 are formed by seismic emergency shut-off valves that operate by detecting seismic motion, the valves 6 and 7 can be shut off with good response. The leakage of stored water in the tank 1 can be prevented, and muddy water intrusion from the damaged water main 2 can be prevented quickly.
[0012]
In addition, when the water tank 1 is formed as described above, the large-scale and large-capacity ring-shaped water tank 1 can be efficiently formed in accordance with a rectangular, circular, or oval site, and an annular water channel. Since the wall 13 that partitions 11 receives high tap water pressure from both sides and the generated differential pressure is small, the end plate structure of a robust pressure-resistant structure such as both ends that seals the cylindrical body of the conventional pressure-type water storage tank, etc. It is not necessary to form in this, and it can form with economical structures, such as a thin plate steel plate structure.
[0013]
The water tank 1 shown in FIGS. 1 and 2 is provided along the ground outer periphery of the side wall 10 of the swimming pool 8 installed in a school or the like, and has a rectangular cross section at the bottom of the pool deck 9. A rectangular tubular body, that is, a long rectangular annular water passage 11 is formed by connecting the cylindrical tubular bodies, and one central portion located on the short side of the long rectangular annular water passage 11 is formed at the axial center of the cylindrical body. The inflow pipe 3 connected to the upstream side of the water main pipe 2 is attached to the lower cylindrical wall of one right-side annular water channel 11 in close proximity with the wall body 13 sandwiched between and in close proximity to the wall body 13. An outflow pipe 4 connected to the downstream side of the water main pipe 2 is attached to the upper cylindrical wall of the left annular water channel 11.
[0014]
In this way, when the water tank 1 formed of a rectangular cylinder is used by using the periphery of the pool 8 of a school or the like that is likely to become a block disaster prevention base, the small space below the periphery of the pool deck 9 that tends to be an idle space is used. In addition, there is an advantage that the large-capacity water storage tank 1 can be installed. Further, by forming the annular water channel 11 by effectively using the side wall 10 of the pool 8, the effect of reinforcing the annular water channel 11 can be obtained. Evacuees who gather at the disaster prevention base effectively use the water for emergency drinking water stored in the water tank 1 formed by the square cylinder that can store more water than the cylindrical body and the water for the daily miscellaneous water pool 8 Can be used. Of course, the ring-shaped annular waterway 11 is not limited to installation on the periphery of the pool 8 but is installed on the periphery of the building or structure, such as a disaster prevention article storage, or in the ground, and as a disaster prevention facility in combination with disaster prevention equipment. May be used or installed in its own place.
[0015]
Although not shown, a cylindrical body such as a steel pipe having a circular cross section is connected to form a ring-shaped annular water channel 11 such as an annular shape, and two pipe flanges are attached to one portion of the annular water channel 11; If the wall 13 of the blind plate (blind flange) is inserted and partitioned between the pipe flanges, and the wall 13 is sandwiched between the inflow pipe 3 and the outflow pipe 4, the structure is simple and constructed. It is easy to do and can form the pressure type water storage tank 1 more economically.
[0016]
1 and 2 has a structure in which the lower part is buried in the ground and the upper part is joined to the lower part of the deck 9 of the pool 8, but the water tank 1 has a large water pressure or the like. For example, if a slide shoe (not shown) is provided and formed so that the annular water channel 11 of the water tank 1 can slide outward when added, the water tank 1 connected to the water main 2 for flowing high-pressure water, A more suitable structure can be obtained.
[0017]
Moreover, the water storage tank 1 shown in FIGS. 1 and 2, that is, a rectangular tube annular water channel 12 is formed by connecting the rectangular tube bodies, and a wall body 13 that partitions one part of the annular water channel 12 is provided, The inflow pipe 3 connected to the upstream side of the water main pipe 2 is attached to the cylindrical wall of one annular water channel 12 with the partition wall 13 interposed therebetween, and the water main pipe 2 is attached to the cylindrical wall of the other annular water channel 12. In the water tank 1 formed by attaching the outflow pipe 4 connected to the downstream side of the water tank, the water flow is diverted along the water flow direction to the location where the water flow direction of the water tank 1 is largely changed, and the parallel flow direction is guided in the direction of change. The rectifying plates 14, 14A, 14B are provided, and the rectifying plates 14, 14A, 14B formed of a stainless steel plate having parallel durability provided along the flowing direction of the water flow guide the direction in which the water flow is divided and changed. , Inlet / outlet pipe 3 to the water tank 1 4 of a portion flowing water direction such corner portion 15 of the ring-shaped rectangular angle attachment points and annular water passage 12 is significantly changed, it is formed so as dead water does not occur easily places occur i.e. stagnant water.
[0018]
As described above, the water tank 1 provided with the rectifying plates 14, 14 </ b> A, 14 </ b> B is in the direction of flowing water such as the location where the inflow / outlet pipes 3, 4 are attached to the water tank 1, the corner 15 of the ring-shaped rectangular corner of the annular water channel 12. Since there is no dead water stagnant at the place where the water changes greatly, it is possible to make the structure suitable for the pressure-type water storage tank 1 and to store water with a large-capacity rectangular tubular water channel 12 for the installation area. The tank 1 can be formed economically.
[0019]
The parallel rectifying plates 14, 14A, 14B provided along the direction of water flow so that the water flow is diverted to a location where the direction of water flow of the water storage tank 1 is greatly changed and guided in the direction of change are further described in detail with reference to the drawings. To do.
[0020]
FIG. 3 shows an example of the rectifying plate 14 provided at the corner portion 15 of the ring-shaped rectangular corner where the flowing direction of the rectangular tubular water channel 12 is greatly changed to a right angle. The rectifying plate 14 includes a plurality of parallel rectifying plates 14. Downstream of the flat plate 18 from the diagonal line connecting the corner of the water channel inner wall of the four corner portions 15 to the corner of the outer wall of the water channel to the downstream downstream channel 17 downstream position of the inner wall extension line position of the upstream water channel 16 The extension length from the water channel 17 is changed in parallel, the bottom portion of the water channel 12 and the ceiling portion (not shown) are connected to be vertically installed to form a plurality of channels, and the tap water flowing from the upstream water channel 16 , The straightening plate 14 of the flat plates 18, 18... With different extension lengths, the water flow is divided for each of the hitting extension portions, and the water flow is divided and guided to the rightward current changing plate 14 in the direction perpendicular to the change direction. Between the plurality of passage-shaped flat plates 18 or flat Each branch flow advances in parallel between the wall 18 and the wall, and after passing through the rectifying plate 14, the respective divided flows merge and flow into the downstream water channel 17 without stagnation in the passage partitioned by the rectifying plate 14. Form to run. The spacing distance of the rectifying plate 14 is set such that the spacing width is gradually increased from the inside to the outside as shown in FIG. 4 in consideration of the illustrated equal spacing or the structure and shape of the rectifying plate 14. You may form so that adjustment may be carried out.
[0021]
FIG. 4 shows another example of the rectifying plate 14 provided at the corner portion 15 in which the ring-shaped rectangular corner of the rectangular tube-shaped water channel 12 is formed with a curvature, and the water flow is divided with respect to the embodiment shown in FIG. This rectifying plate 14 excellent in function is perpendicular to the predetermined direction from the upstream water channel 16 to the downstream water channel 17 where the water flow direction of the four corner portions 15 of the rectangular tube-shaped water channel 12 changes greatly to a right angle. A plurality of curved plates 20 having arcuate curved portions 19 are arranged in parallel along the flow of the water, and are formed so as to provide a plurality of passages by vertically connecting the bottom portion of the water channel 12 and a ceiling portion (not shown). The tap water flowing in from 16 is divided for each passage at the parallel inlets of the rectifying plates 14, guided along a plurality of curved plates 20 of the rectifying plates 14 in a perpendicular change direction, and advances. 14 After passing the installation position Formed to such flows without merging with other guided diverted tap water at the outlet of Nagareban 14 stagnates to the downstream side water passage 17.
[0022]
FIG. 5 shows a rectifying plate 14A installed at a location where the inflow pipe 3 is mounted horizontally on the upper side wall surface of the inflow location on one side across the wall body 13 of the rectangular tubular water channel 12, As shown in the perspective explanatory view of FIG. 5 (a), the horizontal cross-sectional explanatory view from above (b), and the side cross-sectional explanatory view of (c), the flowing water direction changes in two directions, a horizontal direction and a vertical direction. The flat waters 21 and 22 are installed in parallel, and the tap water introduced in the horizontal direction from the inlet 3A of the inflow pipe 3 hits the flat plate 21 in which the overhang width gradually increases in the forward direction. The water flow is shunted, guided in the direction perpendicular to the change direction, proceeds downward in the vertical direction, and further hits the flat plate 22 where the overhang width gradually increases as it goes downward in the traveling direction, and the water flow is divided for each overhang width, Guided in a direction perpendicular to the change direction, Flat square tube joins the water flow diverted to the water flow direction of the annular water passage 12 smoothly formed to flowing water without stagnating even greater direction change twice.
[0023]
FIG. 6 shows a rectifying plate 14A installed at a location where the inflow pipe 3 is vertically attached to the upper central ceiling wall surface of the inflow location on one side across the wall body 13 of the rectangular tubular water channel 12. A flat plate 23 is installed in parallel in the horizontal direction where the vertical flow direction changes to a horizontal direction at right angles, and the tap water flowing vertically from the inflow pipe 3 spreads at a lower speed at the inflow port 3A. It hits the flat plate 23 that gradually increases as it goes downward, and the water flow is diverted for each overhang width, guided in the direction perpendicular to the changing direction, and the water flow diverted in the horizontal water flow direction of the horizontal rectangular tube-shaped water channel 12 is merged. Even if it falls, it forms so that it may flow smoothly without stagnation.
[0024]
FIG. 7 shows a rectifying plate 14B installed at a location where the outflow pipe 4 is horizontally mounted on the upper side wall surface of the outflow location on the other side across the wall body 13 of the rectangular tube-shaped water channel 12. A flat plate 24, 25 is installed in parallel in two directions, a horizontal direction and a vertical direction, in which the direction of flowing water changes at a right angle, and the tap water flowing in the horizontal direction from the rectangular tube-shaped water channel 12 is not shown in the ceiling of the water channel. From the flat plate 24 that gradually increases as it goes forward in the direction of travel, the water flow is divided for each overhang width, and the water flow that is guided by the flat plate 24 in the direction perpendicular to the changing direction and proceeds in the vertical direction is merged. In addition, it hits the flat plate 25 where the overhang width gradually increases as it goes upward in the traveling direction, and the water flow is diverted for each overhang width, guided to the flat plate 25 in the direction perpendicular to the change direction, and merged at the outlet 4A. Formed to flowing water without stagnating even greater direction change twice from the outflow pipe 4 towards the water mains 2.
[0025]
As described above, the water flow is divided into the corner portion 15 where the flow direction of the rectangular tube-shaped water channel 12 formed in a ring shape of a plane rectangular shape changes to a right angle or the like, the attachment portion of the inflow pipe 3 and the attachment portion of the outflow pipe 4. When the rectifying plates 14, 14A, 14B are provided to guide the direction of change, the tap water flowing from the upstream water main 2 is installed because the cross section of the water channel is reduced by providing the rectifying plates 14, 14A, 14B. The flow velocity is increased at the place, the water flows between the rectifying plates 14, 14 </ b> A, 14 </ b> B arranged in parallel in a passage shape without stagnation, and smoothly flows around the entire circumference of the rectangular tubular water channel 12 to the downstream water main 2. Therefore, the water tank 1 is suitable for a normal water transmission and distribution facility because fresh water always flows smoothly in the water tank 1, and suitable for an emergency water supply source that supplies fresh water as drinking water in an emergency. It can be.
[0026]
【The invention's effect】
As described, a rectangular tube is connected to form a rectangular ring shape, and a wall body is provided to partition one portion of the annular water channel so as to be orthogonal to the axis of the rectangular tube body, and the partition wall body is sandwiched between them. Attach an inflow pipe connected to the upstream side of the main water pipe to the square cylinder wall of one annular water channel, and attach an outflow pipe connected to the downstream side of the main water pipe to the square cylinder wall of the other annular water channel A water tank is formed in the annular flow channel, and the water flow is diverted to the inlet, outlet, and corner where the water flow direction is greatly changed, and the water flow is diverted and guided in the direction of changing the flow path. A water tank with a plurality of rectifying plates made of rectangular flat plates or curved plates that gradually increase in length, that is, the overhang width in the direction of travel, is arranged in parallel along the flowing direction. And the corner of the ring-shaped rectangular corner of the annular channel The water flow direction is greatly changed, and the water flow is divided and divided for each extension length, that is, for each overhang width, and is guided by the current plate in the changing direction, and is divided between a plurality of passage-shaped flat plates or curved plates. After passing through the rectifying plate, the diversions merge and flow smoothly without stagnation into the downstream channel, and there is no dead water in the stagnation water. Since it flows smoothly, it is suitable for a normal water transmission / distribution facility, and it can be a water storage tank suitable for an emergency water supply source that supplies fresh water as drinking water in an emergency.
[0027]
In addition, the water tank consisting of this circular flow channel is not limited to installation on the periphery of the pool, but is installed on the periphery or in the ground of buildings and structures such as storages for disaster prevention supplies. It may be used as a storage space, or may be installed in its own place, and a large and large-capacity water tank can be formed efficiently according to the site.
Furthermore, it is not necessary to form the wall body partitioning the annular water channel into a strong pressure-resistant structure end plate structure that seals the cylindrical body of the conventional pressure-type water storage tank, etc. A large-scale, large-capacity pressure-type water storage tank that can be formed with an economical structure and does not generate stagnant water can be economically constructed.
[0028]
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a horizontal cross-sectional conceptual explanatory diagram schematically showing a part of an example of a water storage tank according to the present invention.
FIG. 2 is a vertical cross-sectional conceptual explanatory diagram schematically showing a part of the water storage tank of FIG.
FIG. 3 is a perspective explanatory view schematically showing a part of an example of a current plate with a part omitted.
FIG. 4 is a horizontal cross-sectional explanatory diagram schematically showing a part of another example of the rectifying plate, omitting a part thereof.
FIG. 5 is a simplified illustration of a part of the rectifying plate provided on the inflow pipe mounting portion, with a part omitted. FIG. 5 (a) is a perspective explanatory view with a part omitted, and FIG. Sectional explanatory drawing, (c) is a side sectional partial explanatory view.
FIG. 6 is a perspective explanatory view showing, in a simplified manner, a part of another example of the rectifying plate provided in the inflow pipe mounting portion is omitted.
FIG. 7 is a perspective explanatory view showing a simplified illustration, omitting part of an example of a rectifying plate provided in the outflow pipe mounting portion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Reservoir 2 Water supply main 3 Inflow pipe 3A Inlet 4 Outlet 4A Outlet 5 Valve 6 Valve 7 Valve 8 Pool 9 Deck 10 Side wall 11 Annular water channel 12 Square tube annular water channel 13 Wall bodies 14, 14A, 14B Rectification plate 15 Corner portion 16 Upstream water channel 17 Downstream water channel 18 Flat plate 19 Arc-shaped curved portion 20 Curved plate 21 Flat plate 22 Flat plate 23 Flat plate 24 Flat plate 25 Flat plate

Claims (1)

A rectangular tube is connected to form a rectangular ring shape, and a wall body is provided to partition one portion of the annular water channel so as to be orthogonal to the axis of the rectangular tube body. An inflow pipe connected to the upstream side of the water main is attached to the square tube wall of the water channel, and an outflow pipe connected to the downstream side of the water main is attached to the square tube wall of the other annular water channel. The extension length, that is, the overhang, forms a water storage tank and guides the water flow to the direction of changing the flow path by diverting the water flow to the inlet, outlet, and corner where the water flow direction of the water tank changes greatly A water storage tank comprising a plurality of rectifying plates made of rectangular flat plates or curved plates whose width gradually increases in the traveling direction, arranged in parallel along the flowing water direction.

Images