JP7374727B2 - rainwater control system - Google Patents

Description

The present invention relates to a rainwater control system that adjusts the amount of rainwater released.

In recent years, torrential rains known as torrential rains have occurred, causing problems such as flooding of urban rainwater drainage infrastructure. For this reason, efforts are being made to further reduce the amount of rainwater released by installing facilities to temporarily store rainwater, such as seepage pits and rainwater storage tanks, in buildings.

JP2005-308927A

Patent Document 1 describes a biotope that uses water from hand-washing areas and rainwater that falls on the roof of a building. According to the technology described in Patent Document 1, there is a problem in that it is not possible to temporarily store and adjust the amount of rainwater that is released when the amount of rainwater increases rapidly when heavy rain occurs. Furthermore, biotopes may not be applicable without major changes to existing equipment.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rainwater control system that can minimize changes to existing equipment and adjust the amount of rainwater that rapidly increases.

In order to achieve the above object, the present invention provides a rainwater control system that adjusts the amount of temporarily stored rainwater discharged to the outside, the system comprising a load installed above a pipe into which the rainwater flows. and a water receiving part connected at one end to the sensor and having the other end disposed below within the conduit and formed to receive resistance to rainwater flowing within the conduit. a flow meter; an adjustment unit that adjusts the discharge amount of the stored water stored in a water storage section that stores rainwater flowing in from the pipe; a control device that calculates the flow rate of rainwater and controls the adjustment unit based on the flow rate ; further comprising a water storage tank capable of temporarily storing the stored water stored in the water storage unit; The rainwater control system is characterized in that the water storage section includes a retarding pond and an underground regulating pond, and the water storage tank is provided underground of a building .

According to the present invention, since the water meter includes a sensor that detects a load and a water receiver connected to the sensor, the amount of rainwater in the pipe can be detected with a simple configuration. In addition, since water meters can be retrofitted into pipes, it is possible to build a system that adjusts the amount of rainwater discharged without making major changes to existing equipment.

Further, in the present invention, the flow meter detects, by the sensor, a load applied to the one end transmitted from the water receiving section that has received resistance from rainwater flowing in the pipe, and the control device detects the load applied to the one end, The flow rate may be calculated based on the flow rate.

According to the present invention, since the amount of water in the pipe is detected by a sensor that detects the load, it is possible to construct a system with a simplified device configuration.

Further, the present invention includes a water storage tank provided on the downstream side of the water storage part, and the control device controls the adjustment part to move the water from the water storage part to the water storage tank when the flow rate is equal to or higher than a predetermined value. It may be configured to discharge the stored water to.

According to the present invention, when the flow rate of rainwater is detected by the flow meter to be greater than a predetermined value, it can be assumed that the amount of rain is greater than the predetermined amount, so the rainwater is temporarily stored in a water tank without being discharged to the outside. , can prevent sewer pipes from overflowing.

Further, the present invention includes a permeable layer provided on the downstream side of the water storage part, and the control device controls the adjustment part to move the water from the water storage part to the permeable layer when the flow rate is equal to or higher than a predetermined value. It may be configured to discharge the stored water to.

According to the present invention, when the flow rate of rainwater is detected by the flowmeter to be above a predetermined value, it can be assumed that the amount of rainwater is greater than the predetermined amount due to localized heavy rain, etc., and therefore the rainwater is temporarily stored in the permeable layer without being discharged to the outside. water can be discharged to prevent sewer pipes from overflowing.

Further, in the present invention, the control device may be configured to control the adjustment section to limit the stored water to be discharged from the water storage section to the outside when the flow rate is equal to or higher than a predetermined value. .

According to the present invention, when the flow meter detects that the flow rate of rainwater is higher than a predetermined value, it can be assumed that the amount of rainwater is higher than the predetermined amount due to localized heavy rain, etc., so the rainwater is temporarily stored in the water storage part without being discharged to the outside. It can store water and prevent sewer pipes from overflowing.

Further, in the present invention, when the water level of the stored water detected by a water level meter that detects the water level of the water storage section is equal to or higher than a predetermined value, the control device controls the adjustment section to remove the water from the water storage section. It may be configured to discharge the stored water to the outside.

According to the present invention, even if rainwater is temporarily stored in the water storage part, when the water storage part eventually becomes full, the stored water is discharged to the outside.

Further, in the present invention, the control device is configured to control the adjustment section to discharge the stored water from the water storage section to the outside after a predetermined period of time has passed after it is detected that the rain has stopped. It's okay.

According to the present invention, it is possible to prevent the sewer pipe from overflowing during rain by discharging the stored water from the water storage section to the outside when the capacity of the sewer pipe becomes available after the rain has stopped.

According to the present invention, it is possible to minimize changes to existing equipment and to adjust the amount of rainwater discharged, which increases rapidly.

1 is a diagram showing the configuration of a rainwater control system according to an embodiment of the present invention. FIG. 2 is a block diagram showing the configuration of a control device. It is a figure showing the composition of a flow meter. It is a graph showing the relationship between the output value of a flow meter and the flow velocity of rainwater.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a rainwater control system according to the present invention will be described with reference to the drawings.

As shown in FIG. 1, the rainwater control system 1 is a system that controls the discharge of rainwater collected in a water storage facility P in a building B. The rainwater control system 1 adjusts the amount of rainwater discharged from the building B according to the amount of rainfall during rainfall, and reduces the amount of rainwater flowing into the sewer pipe U.

The rainwater control system 1 includes a detection unit 10 that detects information regarding rainwater W, an adjustment unit 20 that adjusts the storage amount of rainwater W collected in a water storage facility P, and an adjustment unit 20 based on the detection result by the detection unit 10. A control device 30 is provided. The detection unit 10 includes a flow meter 11 that detects the flow rate of rainwater W, an observation device 12 that observes the environment around the building B, and a water level meter 14 that detects the water level of the water storage facility P. The adjustment unit 20 includes a drainage pump 21 and a water gate 22.

The building B to which the rainwater control system 1 is applied is a structure such as a building or an apartment building. In the building B, an observation device 12 is provided on the rooftop B1. The building B includes a pipe D through which rainwater that falls on the rooftop B1 flows. The conduit D includes a vertical part D1 that is piped vertically to the building B, and a horizontal part D2 that is underground or on the ground surface and is connected to the vertical part D1 on the upstream side and connected to the water storage part P1 on the downstream side. . The horizontal portion D2 is sloped so that the downstream side is lower. A flow meter 11 for detecting the flow rate of rainwater is provided in the middle of the horizontal portion D2.

A water storage section P1 is provided on the downstream side of the pipe D. A water gate 22 is provided downstream of the water storage portion P1. A regulating pond P4 is provided downstream of the water gate 22. A final basin X is provided on the downstream side of the regulating pond P4. The downstream side of the final basin X is connected to a sewer pipe U. A drainage pump 21 is provided in the water storage section P1. Drain pump 21 is connected to water tank P2 and permeation layer P3.

The water storage section P1 is a water storage facility that temporarily stores rainwater flowing in from the pipe D. The water storage portion P1 is, for example, a retarding pond, a retarding basin, an underground regulating pond, or the like. In order to reduce the amount of rainwater flowing into the sewer pipe U, the water storage section P1 temporarily stores and adjusts the rainwater, and after the rain has finished, discharges the rainwater into the sewer pipe U while adjusting the discharge amount. The amount of rainwater discharged from the water storage part P1 is adjusted by the water gate 22. The water gate 22 is controlled by a control device 30 as described below. The water level of rainwater stored in the water storage part P1 is detected by the water level gauge 14 and adjusted by the drainage pump 21.

Drainage pump 21 drains rainwater from water storage portion P1 to water storage tank P2 and permeation layer P3. The drainage pump 21 is controlled by a control device 30 as described below. The water tank P2 is a water storage facility that is installed in the basement of the building B and stores a predetermined amount of rainwater. The permeation layer P3 is a facility provided underground that allows a predetermined amount of rainwater to permeate and guide it to drainage equipment. The regulating pond P4 is a temporary water storage facility that is appropriately provided depending on the scale of the building B and the water storage section P1. The permeation layer P2 is, for example, a permeation pit, a permeation trench, a road permeation pit, a permeable pavement, a permeation well, or the like.

The regulating pond P4 temporarily stores rainwater discharged from the water storage section P1 and reduces the flow rate of the rainwater. The final basin X temporarily retains rainwater and allows foreign matter contained in the rainwater to settle before the rainwater is discharged into the sewer pipe U. Rainwater is stored by the configuration of building B described above. A water storage facility P is configured by the water storage portion P1, water storage tank P2, permeation layer P3, and regulation pond P4 described above.

As shown in FIG. 2, the control device 30 is provided, for example, in a central monitoring room of building B, and monitors and controls building B. The control device 30 may remotely monitor the building B via a network. The control device 30 includes an acquisition section 32 that acquires environmental information regarding the environment around the building B from the detection section 10, a control section 34 that controls the adjustment section 20 and the alarm device 25 based on the environmental information, and a control section 34 that acquires environmental information regarding the environment around the building B from the detection section 10. It includes a display unit 36 that displays information regarding the environment, and a storage unit 38 that stores environmental information and data used for control. The control device 30 is realized by, for example, a terminal device such as a personal computer (PC), a tablet terminal device, or a smartphone.

The acquisition unit 32 is an interface that acquires the electrical signal output from the sensor 11A provided in the flow meter 11 by wireless or wire. The acquisition unit 32 is a wired or wireless device. The configuration of the flowmeter 11 will be described later. The acquisition unit 32 acquires observation value data regarding the environment surrounding the building B, such as rainfall, temperature, humidity, solar radiation, wind direction, and wind speed, from the observation device 12.

The control unit 34 is realized, for example, by a hardware processor such as a CPU (Central Processing Unit) executing a program (software). Some or all of these components are hardware (circuit parts) such as LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), and GPU (Graphics Processing Unit). (including circuitry), or may be realized by collaboration between software and hardware.

The program may be stored in advance in a storage device such as an HDD (Hard Disk Drive) or a flash memory, or may be stored in a removable storage medium such as a DVD or CD-ROM, and the storage medium may be installed in a drive device. It may be installed by being attached. Alternatively, this computer program may be distributed to a computer via a communication line, and the computer receiving the distribution may execute the program.

The control unit 34 calculates the flow rate of rainwater flowing in the pipe D based on the information acquired from the flow meter 11, and controls the adjustment unit 20 via the control panel 35 based on the flow rate to flow into the water storage unit P1. Adjust the discharge amount of stored water. The control unit 34 controls the adjustment unit 20 via the control panel 35 based on the water level based on the information acquired from the water level gauge 14, and adjusts the discharge amount of the stored water stored in the water storage unit P1.

The control unit 34 controls the alarm device 25 via the control panel 35 based on the information acquired from the detection unit 10 to output a predetermined alarm. The alarm device 25 is composed of a rotating light, a speaker, etc., and outputs a warning by light, sound, etc. The control unit controls the alarm device 25 to output a predetermined alarm when the information acquired by the detection unit 10 is greater than or equal to a predetermined threshold. The processing of the control unit 34 will be described later.

The display unit 36 is realized by, for example, a display device such as a liquid crystal display, an organic EL display, or an LED display. The display unit 36 may be realized by another terminal device separate from the control device 30, such as a personal computer (PC), a tablet terminal device, or a smartphone. The storage unit 38 is a storage device such as an HDD, flash memory, RAM (Random Access Memory), or ROM (Read Only Memory).

The control panel 35 is connected to the control device 30 wirelessly or by wire. The control panel 35 is connected to a power source, and switches and supplies power to the drain pump 21, water gate 22, and alarm device 25 based on control signals output from the control device 30.

Next, the configuration of the flowmeter 11 will be explained.

As shown in FIG. 3, the flow meter 11 includes a sensor 11A that detects a load, and a water receiver 11B attached to the sensor. The sensor 11A is mounted above in the horizontal portion D2 of the conduit D. It is desirable that the sensor 11A be installed at the top of the pipe D where it is not always immersed in rainwater W. For example, a load cell is used as the sensor 11A. The sensor 11A may be one that detects a moment load or may be one that detects a uniaxial load. One end side of the water receiving portion 11B is connected to the sensor 11A.

The water receiving portion 11B is formed, for example, into a rod-shaped body or a plate-shaped body whose longitudinal direction is along the vertical direction. The other end side of the water receiving portion 11B is disposed below within the conduit. The water receiving portion 11B is formed to receive resistance from rainwater W flowing within the pipe D. When rainwater W flows in the pipe D, the lower end side of the water receiving portion 11B receives resistance from the rainwater W, and the water receiving portion 11B is pulled in the downstream direction. Then, a moment load is applied to the sensor 11A connected to one end of the water receiver 11B. This load changes depending on the resistance (stress) that the other end of the water receiving portion 11B receives. That is, the sensor 11A outputs an output value of an electric signal according to the flow rate of the rainwater W flowing in the pipe D.

Since the flow meter 11 can be retrofitted into the conduit D with a simple configuration as described above, it can be installed not only when the building B is newly constructed but also when it is renovated without making any changes to the existing building B. Unlike existing non-contact ultrasonic flowmeters, the flowmeter 11 does not require a straight pipe section approximately 10 times the diameter of the pipe D, and does not require the pipe D to be filled with water, making it inexpensive. The flow rate of rainwater W in the pipe D can be detected.

As shown in FIG. 4, there is a proportional relationship between the voltage value of the electrical signal output from the sensor 11A and the flow velocity of the rainwater W. The control unit 34 reads out from the storage unit 38 a proportional equation between the pre-calculated voltage value indicated by the sensor 11A and the flow velocity of the rainwater W, and calculates the flow velocity based on the value of the electric signal output from the sensor 11A. The control unit 34 integrates the calculated flow velocity over a predetermined monitoring time, and calculates the flow rate of the rainwater W flowing in the pipe D. The flow meter 11 uses the sensor 11A to detect the load applied to one end of the water receiving part 11B that has received resistance from the rainwater W flowing in the pipe D, and the control part 34 adjusts the flow rate of the rainwater W based on the load. Calculate.

When the flow rate of rainwater W in the conduit D is equal to or higher than a predetermined value, the control unit 34 controls the drainage pump 21 to discharge the stored water stored in the water storage portion P1 from the water storage portion P1 to the water storage tank P2. When the flow rate of rainwater W in the pipe D is equal to or higher than a predetermined value, the control unit 34 controls the drainage pump 21 to discharge the stored water stored in the water storage part P1 from the water storage part P1 to the permeation layer P3. Good too. When the flow rate of rainwater W in the conduit D is equal to or higher than a predetermined value, the control unit 34 controls the water gate 22 to close to limit the amount of the stored water to be discharged from the water storage unit P1 to the outside.

The control unit 34 controls the water gate 22 when the water level of the stored water detected by the water level gauge 14 that detects the water level of the water storage part P1 exceeds a predetermined value even if rainwater W is discharged into the water storage tank P2 and the permeation layer P3. is controlled to open, and the stored water is discharged from the water storage part P1 to the outside. Based on the detection result by the observation device 12, the control unit 34 controls the water gate 22 to be opened after a predetermined period of time has passed after the rain has stopped, and discharges the stored water from the water storage unit P1 to the outside.

As described above, according to the rainwater control system, the amount of rainwater released can be adjusted using a flow meter with a simple configuration. With rainwater control systems, water meters can be retrofitted to buildings, minimizing changes to existing equipment.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described one embodiment, and can be modified as appropriate without departing from the spirit thereof. For example, in addition to the load cell, other sensors may be used as long as they detect a load. When the water level of the water storage portion P1 becomes equal to or higher than a predetermined level, the stored water may overflow from the water storage portion P1. Further, a valve may be used as the water gate.

1 rainwater control system, 10 detection unit, 11 flowmeter, 11A sensor, 11B water receiver, 12 observation device, 14 water level gauge, 20 adjustment unit, 21 drainage pump, 22 water gate, 25 alarm device, 30 control device, 32 acquisition part, 34 control part, 35 control panel, 36 display part, 38 storage part, B building, D conduit, D1 vertical part, D2 horizontal part, EL organic, P1 water storage part, P2 water storage tank, P3 permeation layer, P4 adjustment Pond, U Sewer pipe, W Rainwater, X Final basin

Claims (7)

A rainwater control system that adjusts the amount of temporarily stored rainwater discharged to the outside,
a sensor for detecting a load installed above the pipe into which the rainwater flows; and one end connected to the sensor and the other end disposed below the pipe, the rainwater flowing through the pipe. a flowmeter comprising a water receiver formed to receive resistance;
an adjustment unit that adjusts a discharge amount of stored water stored in a water storage unit that stores rainwater flowing in from the pipe;
A control device that calculates the flow rate of the rainwater flowing in the pipe based on the information acquired from the flow meter and controls the adjustment section based on the flow rate ,
further comprising a water storage tank capable of temporarily storing the stored water stored in the water storage section,
The water storage section is composed of a retarding pond and an underground regulating pond,
The water tank is characterized in that it is provided in the basement of the building .
Rainwater control system. The flow meter detects, by the sensor, a load applied to the one end transmitted from the water receiving portion that is subjected to resistance of rainwater flowing in the pipe,
The control device calculates the flow rate based on the load,
A rainwater control system according to claim 1. comprising the water storage tank provided on the downstream side of the water storage section,
The control device is characterized in that when the flow rate is equal to or higher than a predetermined value, the control device controls the adjustment section to discharge the stored water from the water storage section to the water storage tank.
The rainwater control system according to claim 1 or 2. comprising a permeable layer provided downstream of the water storage section,
The control device is characterized in that when the flow rate is equal to or higher than a predetermined value, the control device controls the adjustment section to discharge the stored water from the water storage section to the permeation layer.
A rainwater control system according to any one of claims 1 to 3. The control device is characterized in that when the flow rate is equal to or higher than a predetermined value, the control device controls the adjustment section to limit the stored water to be discharged from the water storage section to the outside.
A rainwater control system according to any one of claims 1 to 4. When the water level of the stored water detected by a water level meter that detects the water level of the water storage section is equal to or higher than a predetermined value, the control device controls the adjustment section to discharge the stored water from the water storage section to the outside. characterized by
A rainwater control system according to any one of claims 1 to 5. The control device is characterized in that after a predetermined period of time has elapsed after it is detected that the rain has stopped, the control device controls the adjustment section to discharge the stored water from the water storage section to the outside.
A rainwater control system according to any one of claims 1 to 6.

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