JP2021080669A - Rain-water control system - Google Patents

Abstract

To provide a rain-water control system that minimizes changes to an existing installation and can adjust an outflow rate of rain-water with a rapid increase in water volume.SOLUTION: The rain-water control system 1 that adjusts the outflow rate of temporarily stored rain-water to the outside comprises: a flowmeter 11 that has a sensor that detects load installed above in a pipeline D where the rain-water flows in, and a water receiving part that is formed so that one end side is connected to the sensor and the other end side is arranged below the inside of the pipeline to receive resistance of rain-water flowing in the pipeline; an adjustment part 20 that adjusts the outflow rate of stored water stored in a water storage part P1 that stores the rain-water flowing in from the pipeline; and a control device 30 that calculates a flow rate of the rain-water flowing through the pipeline based on information obtained from the flowmeter and controls an adjustment part based on the flow rate.SELECTED DRAWING: Figure 1

Description

The present invention relates to a rainwater control system that regulates the discharge rate of rainwater.

In recent years, torrential rains called guerrilla rainstorms have occurred, causing problems such as flooding of urban rainwater drainage infrastructure. For this reason, efforts are being made to further control the discharge of rainwater by installing equipment for temporarily storing rainwater, such as infiltration basins and rainwater storage tanks, in the building.

Japanese Unexamined Patent Publication No. 2005-308927

Patent Document 1 describes a biotope that uses water from a washroom or rainwater that has fallen on the roof of a building. According to the technique described in Patent Document 1, there is a problem that rainwater in which torrential rain occurs and the amount of water increases rapidly cannot be temporarily stored and the discharge flow rate cannot be adjusted. In addition, the biotope may not be applicable without major changes to existing equipment.

An object of the present invention is to provide a rainwater control system capable of adjusting the discharge rate of rainwater whose amount of water increases rapidly while minimizing the modification of existing equipment.

In order to achieve the above object, the present invention is a rainwater control system that adjusts the discharge flow rate of temporarily stored rainwater to the outside, and is a load installed above in the pipeline into which the rainwater flows. The sensor is provided with a sensor for detecting the above, and a water receiving portion formed so as to receive resistance of rainwater flowing in the pipeline so that one end side is connected to the sensor and the other end side is arranged below the inside of the pipeline. The flow meter, the adjusting unit that adjusts the discharge flow rate of the stored water stored in the water storage unit that stores the rainwater flowing from the pipeline, and the said that flows in the pipeline based on the information acquired from the flow meter. The rainwater control system is characterized by including a control device for calculating the flow rate of rainwater and controlling the adjusting unit based on the flow rate.

According to the present invention, since the water meter is composed of a sensor for detecting the load and a water receiving portion connected to the sensor, the amount of rainwater in the pipeline can be detected with a simple structure. In addition, since the water meter can be retrofitted in the pipeline, it is possible to construct a system that adjusts the discharge rate of rainwater without making major changes to the existing equipment.

Further, in the present invention, the flow meter detects a load applied to the one end transmitted from the water receiving portion that has received resistance of rainwater flowing in the pipeline by the sensor, and the control device detects the load. It may be configured to calculate the flow rate based on.

According to the present invention, since the amount of water in the pipeline is detected by the 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 unit, and when the flow rate is equal to or higher than a predetermined value, the control device controls the adjustment unit to control the water storage unit to the water storage tank. It may be configured to discharge the stored water.

According to the present invention, when the flow meter detects that the flow rate of rainwater is equal to or higher than a predetermined value, it can be estimated that the amount of rainfall is higher than a predetermined value. Therefore, the rainwater is temporarily stored in the water tank without being discharged to the outside. , It is possible to prevent the sewer pipe from overflowing.

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

According to the present invention, when the flow meter detects that the flow rate of rainwater is equal to or higher than a predetermined value, it can be estimated that the amount of rainfall is higher than a predetermined value due to torrential rain or the like. It is possible to prevent the sewer pipe from overflowing.

Further, in the present invention, the control device may be configured to control the adjusting unit to limit the stored water discharged to the outside from the water storage unit 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 equal to or higher than a predetermined value, it can be estimated that the amount of rainfall is higher than a predetermined value due to torrential rain or the like. It is possible to store water and prevent the sewer pipe from overflowing.

Further, in the present invention, when the water level of the stored water detected by the water level gauge that detects the water level of the water storage unit is equal to or higher than a predetermined value, the control device controls the adjusting unit to control the water level from the water storage unit. 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 section, when the water storage section is finally full, the stored water is discharged to the outside.

Further, the present invention is configured such that the control device controls the adjusting unit after a lapse of a predetermined time after detecting that the rain has stopped, and discharges the stored water from the water storage unit to the outside. You may.

According to the present invention, it is possible to prevent the drainage pipe from overflowing during rainfall by discharging the stored water from the water storage unit to the outside when the capacity of the drainage pipe is sufficient after the rain stops.

According to the present invention, it is possible to minimize the modification of the existing equipment and adjust the discharge rate of rainwater in which the amount of water increases rapidly.

It is a figure which shows the structure of the rainwater control system which concerns on embodiment of this invention. It is a block diagram which shows the structure of a control device. It is a figure which shows the structure of the flow meter. It is a graph which shows the relationship between the output value of a flow meter and the flow velocity of rainwater.

Hereinafter, embodiments of the 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 the water storage facility P in the building B. The rainwater control system 1 adjusts the amount of rainwater discharged from the building B according to the amount of rainfall at the time of 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 about the rainwater W, an adjustment unit 20 that adjusts the amount of rainwater W collected in the water storage facility P, and an adjustment unit 20 based on the detection result by the detection unit 10. A control device 30 for controlling the above is provided. The detection unit 10 includes a flow meter 11 for detecting the flow rate of rainwater W, an observation device 12 for observing the environment around the building B, and a water level meter 14 for detecting the water level of the water storage facility P. The adjusting unit 20 includes a drainage pump 21 and a floodgate 22.

The building B to which the rainwater control system 1 is applied is a structure such as a building or a condominium. In the building B, the observation device 12 is provided on the roof B1. Building B includes a pipeline D into which rainwater that has fallen on roof B1 flows in. The pipeline D includes a vertical portion D1 that is piped to the building B along the vertical direction, and a horizontal portion D2 that is connected to the vertical portion D1 on the upstream side and connected to the water storage portion P1 on the downstream side in the ground or on the ground surface. .. The horizontal portion D2 is sloped so that the downstream side is low. A flow meter 11 for detecting the flow rate of rainwater is provided in the middle of the horizontal portion D2.

A water storage unit P1 is provided on the downstream side of the pipeline D. A floodgate 22 is provided on the downstream side of the water storage unit P1. A regulating pond P4 is provided on the downstream side of the floodgate 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 the sewer pipe U. A drainage pump 21 is provided in the water storage unit P1. The drainage pump 21 is connected to the water storage tank P2 and the permeation layer P3.

The water storage unit P1 is a water storage facility that temporarily stores rainwater flowing in from the pipeline D. The water storage unit P1 is, for example, a retarding basin, 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 unit P1 temporarily stores and adjusts the rainwater, and discharges the rainwater to the sewer pipe U while adjusting the discharge rate after the rainfall is completed. The discharge rate of rainwater discharged from the water storage unit P1 is adjusted by the floodgate 22. The floodgate 22 is controlled by the control device 30 as described later. The water level of the rainwater stored in the water storage unit P1 is detected by the water level gauge 14 and adjusted by the drainage pump 21.

The drainage pump 21 drains rainwater from the water storage unit P1 to the water storage tank P2 and the infiltration layer P3. The drainage pump 21 is controlled by the control device 30 as described later. The water storage tank P2 is a water storage facility provided in the basement of the building B to store a predetermined amount of rainwater. The permeation layer P3 is a facility provided in the ground that permeates a predetermined amount of rainwater and guides it to a drainage facility. The regulating pond P4 is a temporary water storage facility provided as appropriate according to the scale of the building B and the water storage unit P1. The permeation layer P2 is, for example, a permeation basin, a permeation trench, a road permeation basin, a water permeable pavement, a permeation well, or the like.

The regulating pond P4 temporarily stores the rainwater discharged from the water storage unit P1 and slows down the flow velocity of the rainwater. The final basin X temporarily retains the rainwater and sinks foreign substances contained in the rainwater before the rainwater is discharged into the sewer pipe U. Due to the structure of the building B described above, rainwater is stored. The water storage facility P is composed of the water storage unit P1, the water storage tank P2, the permeation layer P3, and the regulating pond P4 described above.

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

The acquisition unit 32 is an interface for acquiring an electric signal output from the sensor 11A provided in the flow meter 11 wirelessly or by wire. The acquisition unit 32 is a wired or wireless device. The configuration of the flow meter 11 will be described later. The acquisition unit 32 acquires data of observation values related to the environment around 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 by, for example, a hardware processor such as a CPU (Central Processing Unit) executing a program (software). Some or all of these components are hardware such as LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), GPU (Graphics Processing Unit), etc. It may be realized by (including circuits), or it may be realized by the cooperation of 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 is stored in a removable storage medium such as a DVD or a CD-ROM, and the storage medium is stored in the drive device. It may be installed by being attached. Further, 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 pipeline 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 the water storage unit P1. Adjust the discharge rate of the stored water. Based on the information acquired from the water level gauge 14, the control unit 34 controls the adjusting unit 20 via the control panel 35 based on the water level to adjust the discharge flow rate 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, and outputs a predetermined alarm. The alarm device 25 is composed of a rotating light, a speaker, and the like, and outputs a warning by a light, a voice, or the like. When the information acquired by the detection unit 10 is equal to or greater than a predetermined threshold value, the control unit controls the alarm device 25 to output a predetermined alarm. 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 that is separate from the control device 30 such as a personal computer (PC), a tablet-type terminal device, or a smartphone. The storage unit 38 is a storage device such as an HDD, a flash memory, a RAM (Random Access Memory), or a 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 drainage pump 21, the floodgate 22, and the alarm device 25 based on the control signal output from the control device 30.

Next, the configuration of the flow meter 11 will be described.

As shown in FIG. 3, the flow meter 11 includes a sensor 11A for detecting a load and a water receiving unit 11B attached to the sensor. The sensor 11A is mounted upward in the horizontal portion D2 of the pipeline D. It is desirable that the sensor 11A is installed at the highest position in the pipeline D so as not to be immersed in the rainwater W at all times in the pipeline D. For the sensor 11A, for example, a load cell is used. The sensor 11A may detect a moment load or may detect 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 arranged below in the pipeline. The water receiving portion 11B is formed so as to receive the resistance of the rainwater W flowing in the pipeline D. When the rainwater W flows in the pipeline D, the lower end side of the water receiving portion 11B receives the resistance of 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 side of the water receiving portion 11B. This load changes according to the resistance (stress) received by the other end side of the water receiving portion 11B. That is, the sensor 11A outputs an output value of an electric signal according to the flow rate of the water flow of the rainwater W flowing in the pipeline D.

Since the flow meter 11 can be retrofitted in the pipeline D by the simple configuration as described above, it can be installed not only when the building B is newly constructed but also when the current building B is renovated without any change. Unlike the existing non-contact ultrasonic flowmeter, the flowmeter 11 does not require a straight pipe portion having a diameter of about 10 times the diameter of the pipe D, and the inside of the pipe D does not need to be full, so that the flow meter 11 is inexpensive. The flow rate of rainwater W in the pipeline D can be detected.

As shown in FIG. 4, there is a proportional relationship between the voltage value of the electric signal output from the sensor 11A and the flow velocity of the rainwater W. The control unit 34 reads out the proportional expression between the voltage value indicated by the sensor 11A and the flow velocity of the rainwater W calculated in advance from the storage unit 38, 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 at a predetermined time for monitoring, and calculates the flow rate of the rainwater W flowing in the pipeline D. The flow meter 11 detects the load applied to one end transmitted from the water receiving unit 11B that has received the resistance of the rainwater W flowing in the pipeline D by the sensor 11A, and the control unit 34 detects the flow rate of the rainwater W based on the load. Is calculated.

When the flow rate of the rainwater W in the pipeline 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 unit P1 from the water storage unit P1 to the water storage tank P2. When the flow rate of the rainwater W in the pipeline 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 unit P1 from the water storage unit P1 to the permeation layer P3. May be good. When the flow rate of the rainwater W in the pipeline D is equal to or higher than a predetermined value, the control unit 34 controls to close the water gate 22 to limit the stored water discharged from the water storage unit P1 to the outside.

When the water level of the stored water detected by the water level gauge 14 that detects the water level of the water storage unit P1 even if the rainwater W is discharged to the water storage tank P2 and the permeation layer P3, the control unit 34 exceeds a predetermined value, the water gate 22 Is controlled so as to open the water, and the stored water is discharged to the outside from the water storage unit P1. Based on the detection result by the observation device 12, the control unit 34 controls to open the water gate 22 after a lapse of a predetermined time after the rain stops, and discharges the stored water from the water storage unit P1 to the outside.

According to the rainwater control system as described above, the discharge rate of rainwater can be adjusted by a flow meter having a simple structure. According to the stormwater control system, a water meter can be retrofitted to the building, 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-mentioned one embodiment, and can be appropriately modified without departing from the spirit of the present invention. For example, in addition to the load cell, another sensor may be used as long as it detects a load. When the water level of the water storage unit P1 becomes equal to or higher than a predetermined value, the stored water may be overflowed from the water storage unit P1. In addition, a valve may be used for the floodgate.

1 Rainwater control system, 10 detectors, 11 flowmeters, 11A sensors, 11B water receivers, 12 observation devices, 14 water level gauges, 20 regulators, 21 drainage pumps, 22 water gates, 25 alarm devices, 30 control devices, 32 acquisitions Unit, 34 Control unit, 35 Control panel, 36 Display unit, 38 Storage unit, B Building, D Pipeline, D1 Vertical part, D2 Horizontal part, EL Organic, P1 Water storage part, P2 Water tank, P3 Permeation layer, P4 Adjustment Pond, U sewer, W rainwater, X final basin

Claims (7)

It is a rainwater control system that adjusts the discharge of temporarily stored rainwater to the outside.
A sensor that detects a load installed above the pipeline into which the rainwater flows, and a sensor that is connected to the sensor at one end and the other end is located below the pipeline and flows through the pipeline. A flow meter with a water receiver formed to receive resistance,
An adjustment unit that adjusts the discharge flow rate of the stored water stored in the water storage unit that stores the rainwater that flows in from the pipeline, and
A control device for calculating the flow rate of the rainwater flowing through the pipeline based on the information acquired from the flow meter and controlling the adjusting unit based on the flow rate is provided.
Stormwater control system. The flowmeter detects the load applied to the one end transmitted from the water receiving portion that has received the resistance of rainwater flowing in the pipeline by the sensor.
The control device is characterized in that the flow rate is calculated based on the load.
The rainwater control system according to claim 1. A water storage tank provided on the downstream side of the water storage unit is provided.
The control device is characterized in that, when the flow rate is equal to or higher than a predetermined value, the adjusting unit is controlled to discharge the stored water from the water storage unit to the water storage tank.
The rainwater control system according to claim 1 or 2. A permeation layer provided on the downstream side of the water storage unit is provided.
The control device is characterized in that when the flow rate is equal to or higher than a predetermined value, the adjusting unit is controlled to discharge the stored water from the water storage unit to the permeation layer.
The 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 adjusting unit is controlled to limit the stored water discharged from the water storage unit to the outside.
The rainwater control system according to any one of claims 1 to 4. When the water level of the stored water detected by the water level gauge that detects the water level of the water storage unit is equal to or higher than a predetermined value, the control device controls the adjusting unit to discharge the stored water from the water storage unit to the outside. Characterized by
The rainwater control system according to any one of claims 1 to 5. The control device is characterized in that, after it is detected that the rain has stopped, the adjusting unit is controlled after a lapse of a predetermined time to discharge the stored water from the water storage unit to the outside.
The rainwater control system according to any one of claims 1 to 6.

Images