JP2008280778A - Underground storage type snow melting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To use an area under which a rainwater storage tank is set as a snow disposing place, and effectively melt a large quantity of snow which falls and is collected in the area. <P>SOLUTION: The system comprises a storage tank 1 set under a wide flat surface such as an open space or a parking lot; a heat-exchange pipe 13 disposed so that one side thereof passes through the inside or peripheral part of the storage tank 1 and the other side passes through a heat source 15 in which heat-exchange water is distributed; a circulation pump 14 for circulating the heat-exchange water in the heat-exchange pipe 13; and the heat source 15 for heating the heat-exchange water to hot water. A snow mass put into the storage tank 1 through an input port 7 opened to the ground surface is melted with the heat-exchange water circulated in the heat-exchange pipe 13 and heated through the heat source part 15. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention uses a rainwater storage tank installed in the basement of a flat area such as a park or ground, a supermarket or a parking lot of a condominium, and the snow mass that has accumulated or collected in the area. It is related with the system which melts snow.

In residential areas on the outskirts of cities, rainwater is stored to control the amount of rainwater inflow into the river or to penetrate underground to prevent the inflow of rainwater into the river and flooding the river. There are times when facilities are installed to allow them to do so.
As such a facility, for example, as shown in FIG. 6, a storage tank 100 in which hollow fillers 101 are stacked in the ground is installed, and an inflow channel 102 leading to a side ditch or other drainage channel of a residential land and a discharge leading to a river The road 103 is connected to each other, the rainwater flowing into the storage tank 100 is infiltrated into the ground from the tank peripheral side and bottom, and drained from the discharge path 103 when rainwater flows in exceeding the capacity of the tank. It is known (see, for example, Patent Documents 1 to 5).

Japanese Patent Publication No. 4-35580 Japanese Patent No. 3208379 JP 2002-167723 A JP 2006-322148 A JP 2006-322149 A

In cold areas where heavy snow falls frequently in winter, large parking lots such as supermarkets and open spaces adjacent to roads are often used as temporary dumps for snow that has been removed. When there is heavy snow, when the snow removed by snowplow tractors and snowplows is collected in parking lots and squares and piled up high in the corners, waiting for it to melt naturally, or when there is a lot of snow Had to collect the collected snow on dump trucks and carry them to the sea and rivers for disposal.
However, when the parking lot is used as a snow dump, a space where snow is piled up cannot be used as a parking space until the snow has melted, which is not preferable for a supermarket or the like. Moreover, if the dump truck is loaded with snow removed from the city and transported away from the city area, the cost required for snow removal increases and the vehicle travels on a frozen road surface, which is not preferable with danger. In reality, no means has been realized for efficiently and safely melting a large amount of snow collected by removing snow from an urban area without cost.

  In view of such problems of the prior art, the present invention uses rainwater storage tanks installed in the basement as parking lots and open spaces as a dumping site for snow removed, and piled up in these places and collected a large amount It is an object to make it possible to melt snow efficiently.

  In order to solve the above problems, an underground storage type snow melting system according to the present invention includes a storage tank installed in a basement of a wide flat surface such as a plaza or a parking lot, one side passing through or inside the storage tank, and the other side being a heat source. A heat exchange pipe through which the heat exchange water circulates, a circulation pump for circulating the heat exchange water in the heat exchange pipe, and a heat source part for heating the heat exchange water to hot water. The snow mass introduced into the storage tank from the inlet opened on the ground surface is circulated and circulated through the heat exchange pipe, and is configured to melt snow with heat exchange water heated through the heat source section. It is characterized by.

In the system having the above-described configuration, the storage tank is used to prevent the inundation damage caused by the inflow of rainwater into the river due to concentrated heavy rain and the like. It is installed in the basement of a wide flat surface, and the present invention makes it possible to melt a large amount of snow even in an urban area using this storage tank.
For example, a storage tank having a rainwater storage capacity of 1000 m ³ or more is preferable because it can cope with a large amount of snow melting even when it is hit by heavy snow. Further, if the charging port provided in the storage tank is provided in the central part of the tank, the charged snow mass is uniformly diffused around the inside of the tank, and the snow can be melted efficiently. Input ports may be provided at a plurality of locations on the upper surface of the tank. It is more preferable to provide a foreign matter capturing screen in the charging port or inside the tank in order to catch foreign matter mixed in the snow mass and remove it from the inside of the tank.
As the heat exchange pipe, a hot water resin pipe excellent in durability such as heat resistance and corrosion resistance, for example, a heat resistant polyethylene pipe, a polybden pipe, a cross-linked polyethylene pipe and the like can be used. The thickness of the pipe is preferably about 10 to 20 mm in consideration of flexibility, workability, and thermal efficiency. In addition, the piping position of the heat exchange pipe is the estimated amount of snow melting, tank capacity, installation environment, etc. determined based on the amount of snowfall in winter, such as above the vicinity of the storage tank inlet, below the tank bottom, or inside the tank. Can be selected.
Further, the heat exchange water in the heat exchange pipe is heated to warm water in the heat source part in the process of flowing through the pipe, and the snow mass in the storage tank is melted by the heat of the heat exchange water. The heat source part for heating the heat exchange water can be configured as a heat exchange means using waste heat of a hot water supply facility using a boiler or a heat pump, waste heat of a waste incineration facility, or geothermal heat.

  According to the underground storage type snow melting system of the present invention, the snow mass put into the tank is efficiently melted with the heat of the heat exchange water flowing through the heat exchange pipe arranged in or around the storage tank. can do. In addition to using storage tanks installed as countermeasures against inundation damage, and using natural energy such as geothermal heat and waste heat from various facilities as a heat source for heating heat exchange water, it is less expensive than road heating. A large amount of snow can be melted at a low cost, and the water melted by melting the snow can be permeated into the basement from the tank, or discharged from the tank to the river, or stored in the tank and used.

A preferred embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a configuration of an underground storage type snow melting system according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view showing a form of a storage tank used in the system of the present invention with a half surface of the tank broken. 3 is a diagram showing the plane and side surfaces of the filling body constituting the storage tank of FIG. 2, FIG. 4 is a diagram showing the plane and side surfaces of the flat plate attached to the peripheral surface of the storage tank of FIG. It is the figure which showed the structure of the underground storage type snow melting system of other embodiment of invention.

  As shown in FIG. 1, the underground storage type snow melting system of the present invention includes a storage tank 1 installed in the basement of a wide flat area in an urban area such as a plaza or a parking lot, and one side on the inside and upper and lower periphery of the storage tank 1. A heat exchange pipe 13 through which the heat exchange water is circulated, and a circulation pump 14 for circulating the heat exchange water in the heat exchange pipe 13. And a heat source section 15 for heating the heat exchange water to warm water, and the snow mass introduced into the storage tank 1 from the inlet 7 opened on the ground surface is circulated through the heat exchange pipe 13 as a heat source. The snow is melted by heat exchange water heated through the section 15.

  For example, as shown in FIG. 2, the storage tank 1 is formed by stacking packing bodies 2 in multiple stages on a space formed by digging the ground, and a water-permeable protective sheet 4 around the packing bodies 2 stacked together. The rainwater inflow channel 5 is connected to the upper part of the side surface on one side of the tank via the connection pipe 12, and the rainwater discharge channel 6 is connected to the lower part of the side surface on the other side via the connection pipe 12. So that rainwater can flow into the tank and be stored in the space inside the tank, and the stored rainwater can penetrate into the ground from the protective sheet 4 and can be discharged from the rainwater discharge path 6 to the sewer. Can be configured.

  On the upper surface of the tank, a loading port 7 which is a pipe communicating with the inside of the tank is projected to the vicinity of the ground, and the upper portion of the loading port 7 is a frame 9 supported by a base 8 fixed in the ground. The periphery is covered, and the upper end of the inlet 7 is closed with a lid 10 provided on the top of the frame 9. In addition, a sludge pit 11 is provided on the bottom surface of the tank vertically below the inlet 7 for depositing impurities that have flowed into the tank along with rainwater.

  For example, as shown in FIG. 3, the filling body 2 is formed by arranging a plurality of hollow column bodies 2 b having a height of about 300 mm and a thickness of about 50 mm on the lower surface of a frame body 2 a having a size of about 500 mm square. It is provided so that other fillers 2 can be placed on the frame 2a and stacked in multiple stages. The frame 2a has a plurality of openings 2c having an opening diameter of about 100 to 200 mm. With the fillers 2 stacked in multiple stages, the openings 2c at each stage are connected along the vertical direction. From the top part to the bottom part of the storage tank 1, each opening part 2c penetrates.

  In the lowermost packing body, the columnar body 2b is vertically supported by a flat plate 3 having a large number of pores formed on the surface, as shown in FIG. The flat plate 3 is also integrally attached to the side portion and the upper portion of the filler 2.

  The insertion port 7 also serves as an inspection port for the storage tank 1 and is formed in a size that allows an operator to enter the tank, and an inner surface is provided with a step for the operator to move up and down. Moreover, it may replace with the said water-permeable protective sheet 4, and may use the water-impervious protective sheet 4 or may use both members together.

  As the heat exchange pipe 13, a hot water resin pipe such as a polybden tube is used, and as shown in FIG. Is passed through a heat pump 15 through a circulation pump 14. The circulation pump 15 operates so that the heat exchange water in the heat exchange pipe 13 is circulated and circulated in the pipe.

  The heat source unit 15 is a means for heating the heat exchange water in the heat exchange pipe 13 to warm water, and heat exchange water by heating means such as a boiler and a heat pump, or by using waste heat from a hot water supply facility or waste incineration facility using these. The heating is performed.

  According to the underground storage type snow melting system shown in FIG. 1, when heavy snow falls, the collected snow is collected on a wide flat surface above the storage tank 1, and a snow mass is input into the storage tank 1 from the inlet 7. Then, the inside of the tank is heated by the heat of the heat exchange water passing through the heat exchange pipes 13 disposed in the inside and the periphery of the tank, and the introduced snow mass can be melted in the tank. The melted water permeates into the basement through the water-permeable protective sheet 4 from the bottom of the tank, or is discharged from the rainwater discharge path 6 to the river.

For the storage tank 1 installed in the basement, the heat exchange pipe 13 can be arranged according to the installation environment. For example, as shown in FIG. Also good. Further, as shown in FIG. 5B, the heat exchange pipe 13 may be arranged by laying a water-permeable asphalt 16 on the ground surface above the storage tank 1 and also using a load heating under the ground surface. In this case, the snow accumulated on the ground surface is melted by the heat of the heat exchange pipe 13 and enters the storage tank 1 through the water permeable asphalt. Also good.
Furthermore, geothermal heat may be used as the heat source section 15, and as shown in FIG. 5C, heat exchange water heated by geothermal heat is circulated through the heat exchange pipe 13 disposed at the lower part of the storage tank 1. Then, the heat exchange pipe 13 may be arranged so that the tank is heated from the lower side, or as shown in FIG.

  In addition, the illustrated system configuration and the form of the storage tank are examples, and the present invention is not limited to the illustrated form, and can be configured in other appropriate forms.

It is the figure which showed the structure of the underground storage type snow melting system of one Embodiment of this invention. It is the schematic sectional drawing which fractured | ruptured the half surface of the tank and showed one form of the underground storage tank used for the system of this invention. It is the figure which showed the plane and side surface of the frame unit which comprise the storage tank of FIG. It is the figure which showed the plane and side surface of the flat plate attached to the surrounding surface of the storage tank of FIG. It is the figure which showed the structure of the underground storage type snow melting system of other embodiment of this invention. It is sectional drawing which shows the structure of the conventional underground storage facility.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage tank, 2 filling body, 3 flat plate, 4 protection sheet, 5 rainwater inflow path, 6 rainwater discharge path, 7 inlet, 8 base, 9 frame, 10 cover body, 11 sludge pit, 12 connection pipe, 13 heat exchange Pipe, 14 Circulation pump, 15 Heat source, 16 Permeability asphalt

Claims (2)

A storage tank installed in the basement of a flat area such as a plaza or a parking lot, and one side passes through or inside the storage tank, and the other side passes through the heat source. A heat exchange pipe, a circulation pump for circulating and circulating the heat exchange water in the heat exchange pipe, and a heat source part for heating the heat exchange water to warm water,
It is configured so that the snow mass introduced into the storage tank from the inlet opened on the ground surface is circulated through the heat exchange pipe and melted with heat exchange water heated through the heat source. Underground storage type snow melting system. 2. The underground storage type snow melting system according to claim 1, wherein the heat source unit is heat exchange means using waste heat of a hot water supply facility using a boiler or a heat pump, waste heat of a waste incineration facility, or geothermal heat.

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