JP2009108534A - Rainwater storage facility and monitoring-management system for rainwater storage facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably use a rainwater storage facility for water utilization and flood control by monitoring the state of the rainwater storage tank and detecting and analyzing the abnormality early. <P>SOLUTION: In this monitoring-management system for a rainwater storage facility, the rainwater storage facility 1 comprises a means for transmitting water level data to the outside. An external data processing device 10 comprises a receiving means for receiving the water level data, a rainfall data collection means for receiving rainfall data in a district near the rainwater storage facility, a calculation means for calculating, from the rainfall data, one of the data on inflow amount into the rainwater storage facility and the data on level variation of the rainwater storage facility, and a determination means for comparing the level data obtained from the rainwater storage facility and the predicted change amount of level of the rainwater storage facility obtained from the rainfall data, and determining whether the rainwater storage facility is normally operating or not. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rainwater storage facility used for rainwater use and flood control, and more particularly, to a technique that enables stable water use and flood control by appropriately managing the state from an inflow pipe system of a rainwater to a storage tank.

  Conventionally, rainwater storage facilities have been mainly installed for the purpose of flood control, and have been used to store rainwater in a storage tank and adjust rainwater when heavy rains occur.

  However, in recent years, there has been an increasing demand for using rainwater storage facilities for water utilization so that rainwater stored in a storage tank can be used for toilets and greening facilities in parks, schools, shopping centers, and the like.

  However, in a rainwater storage facility for the purpose of water use, the stored rainwater is consumed for a predetermined period, and therefore, a predetermined amount of rainwater must always be held inside the storage tank of the rainwater storage facility. However, in the case where heavy rains occur in the state where rainwater is held inside the storage tank, the storage tank will be full in a short time, so it will not be possible to perform the flood control function of the rainwater storage facility. Problem arises.

  Therefore, a method of separately constructing a flood control tank and a water tank in a rainwater storage facility has been conventionally employed.

  Such a rainwater storage facility is configured to store rainwater in a flood control tank at the time of rainfall, and then transfer the rainwater to a water use tank for use. Therefore, since the flood control tank is empty except during rain, it can be prepared for the next rain. In addition, if rainwater is stored in both the irrigation tank and the flood control tank, the rainwater in the flood control tank is discharged into rivers and sewers without rain to secure the flood control function. is doing.

  Further, for example, in the rainwater adjustment and utilization system described in Patent Document 1, a reservoir for rainwater, a rainwater adjustment tank, and a permeation tank are provided, and by connecting these tanks with pipes, the use of rainwater, rainwater It has been proposed to efficiently adjust the rainwater and infiltrate rainwater into the ground.

  However, in rainwater storage facilities that have separate irrigation tanks and flood control tanks, it is necessary to create two storage tanks of the same degree and to empty one of them. In order to construct two storage tanks of the same degree, there was a problem that construction cost was required.

  Moreover, in the rainwater adjustment and utilization system described in the above-mentioned Patent Document 1, there is still a problem that construction costs are incurred for constructing the three tanks of the intermediate water storage tank, the rainwater adjustment tank, and the infiltration tank. It will occur.

Therefore, the inventors of the present invention have one storage tank, rainwater introduction means for guiding rainwater into the storage tank, discharge means for discharging water in the storage tank, and meteorological data obtained by various measuring instruments. Meteorological data collection means for collecting the stored water amount control means for controlling the amount of water stored in the storage tank based on the collected weather data, and the stored water amount control means causes rainfall based on the weather data. When it is expected, the rainwater remaining in the storage tank is discharged so that the storage tank functions as a flood control tank. On the other hand, the storage water amount control means stores the rainwater during a period when there is no possibility of rainfall predicted based on the weather data. The rainwater storage facility characterized by making a storage tank function as a water-use tank by continuing to store rainwater remaining in the tank has been proposed (see Patent Document 2).
That is, since this rainwater storage facility functions as a water tank as well as a water tank, the rainwater storage facility can be used for both water use and flood control purposes by constructing only one tank. be able to. Therefore, the land use efficiency can be significantly increased and the construction cost can be greatly reduced.

Incidentally, as a rainwater storage facility for using rainwater that has fallen in the water collection area of the rainwater storage facility as described above, there is a storage and penetration facility such as rainwater described in Patent Document 3. This is a rainwater storage facility (FIGS. 9 and 10) for the purpose of flood control that temporarily stores rainwater in a storage tank and discharges small amounts from the orifice pipe during rainfall. Moreover, there is a rainwater storage tank (FIG. 11) for the purpose of water utilization for storing rainwater in the storage tank without discharging little by little and draining from the overflow pipe only when the storage tank is full.
Further, in Patent Document 1 described above, a rainwater storage tank (FIG. 12) having both functions of water control and water supply by installing the rainwater storage tank for flood control and water use purposes and connecting them with pipes is provided. It is disclosed.

In any case, the rainwater storage system described in these documents is free from clogging of the inflow pipe, outflow pipe, and orifice pipe, and is not excessively deposited with dust, and the water from the storage tank. No leakage is a condition for achieving the target function.

For example, when an abnormality such as clogging occurs in the pipeline of the inflow system, the inflow of rainwater to the rainwater storage tank is remarkably reduced or no longer flows at all.
In such a situation, in a rainwater storage tank for flood control purposes, a problem arises that flooding occurs during heavy rain. Moreover, in the storage tank for the purpose of water use, since rainwater cannot be stocked in the rainwater storage tank, there is a problem that the amount of water use is greatly reduced.

  For example, when an abnormality such as clogging occurs in the orifice pipe of the drainage system, the stored water cannot be discharged from the rainwater storage tank, so that the rainwater storage tank is always close to full water. Accordingly, there is a problem that rainwater is discharged from the overflow pipe to the sewer or river immediately after the rain, preventing downstream flooding by temporary storage, which is the original purpose.

  For example, if an abnormality such as clogging occurs in the overflow pipe, when the storage tank becomes full, the inflow flow rate is greater than the outflow flow rate, so that rainwater flows back into the upstream rainwater drainage channel and blows out. There's a problem. In addition, if the flood level on the upstream side is high and the inflow water pressure is high, the water shielding sheet of the storage tank is broken, and there is a possibility that the problem of the collapse due to the movement of surrounding soil may occur.

  For example, when the amount of deposits increases in the rainwater storage tank, there is a problem of a substantial decrease in the amount of stored water and a further deterioration in the stored water quality.

  For example, when a water leak occurs from a storage tank, there is a problem that the amount of water used is drastically reduced in the case of a water tank, and the quality of water is deteriorated if groundwater is contaminated. In the case of a flood control tank, there is a problem that the primary water storage amount during rain falls due to the ingress of groundwater, so that a sufficient flood control function is not achieved.

In order to detect these problems in advance, there is a problem that the rainwater storage facility must be manually inspected regularly, which requires significant labor costs. Therefore, in general, such inspections are not performed due to the cost, and maintenance is performed after problems such as flooding, increased water charges, and deterioration of water quality are actually confirmed. However, there is a problem that stable water supply is not possible.
Furthermore, since there are several factors such as inflow pipes, sheets, outflow pipes, and deposits, the problem is that it takes time to analyze them.

JP 2000-355959 A JP 2007-126939 A Japanese Patent Publication No. 4-26648

The present invention was devised in view of such circumstances, and is a technique for monitoring a state of a water tank, detecting and analyzing an abnormality at an early stage, and making a rainwater storage facility stably usable for water use and flood control. It is intended to provide.

In order to achieve the above object, in the rainwater storage facility according to claim 1 of the present invention,
In a rainwater storage facility for the purpose of flood control and / or water use, which has one storage tank for storing rainwater flowing in from the inflow port,
Water level measuring means for measuring at least the water level in the storage facility;
Transmitting means for transmitting the water level data obtained by the water level measuring means to the outside;
Equipped with.
In claim 2,
In a rainwater storage facility for the purpose of flood control and / or water use, which has one storage tank for storing rainwater flowing in from the inflow port,
A flow rate measuring means for measuring at least the amount of rainwater flowing into the storage facility;
And transmission means for transmitting the inflow data obtained by the flow rate measurement means to the outside.
In claim 3,
In a rainwater storage facility for the purpose of flood control and / or water use, which has one storage tank for storing rainwater flowing in from the inflow port,
A flow rate measuring means for measuring at least the amount of water discharged from the discharge pipe of the storage facility;
And transmission means for transmitting the discharge amount data obtained by the flow rate measurement means to the outside.

In the rainwater storage facility monitoring and management system according to claim 4,
Receiving means for receiving water level data transmitted from the rainwater storage facility according to claim 1 to the outside;
Rain data collection means for receiving rain data near the rainwater storage facility;
A calculation means for calculating at least one of inflow data and water level change data into the rainwater storage facility from the rainfall data;
Comparing the water level data obtained from the rainwater storage facility with the predicted water level change amount to the rainwater storage facility obtained from the rain data, a judging means for judging whether the rainwater storage facility is operating normally is provided.
In claim 5,
Receiving means for receiving inflow data from the rainwater storage facility according to claim 2;
Rain data collection means for receiving rain data near the rainwater storage facility;
A calculation means for calculating an inflow amount to the rainwater storage facility from the rainfall data;
Comparing the received rainwater inflow amount with the predicted inflow amount to the rainwater storage facility obtained from the rainfall data, a judging means for judging whether the rainwater storage facility is operating normally is provided.
In claim 6,
Receiving means for receiving runoff data from the rainwater storage facility according to claim 3;
Comparing the received rainwater outflow amount with the predicted outflow amount set by the diameter of the outflow pipe, it was provided with a judging means for judging whether the rainwater storage facility is operating normally.
In claim 7,
In the monitoring and management system of the rainwater storage facility according to any one of claims 4, 5 and 6,
When the abnormality of the rainwater storage facility is determined, a notification means for automatically notifying the administrator of the abnormality is further provided.
In claim 8,
In the rainwater storage facility monitoring and management system according to any one of claims 4, 5, and 6,
In addition, it is further provided with notifying means for automatically transmitting an opening operation signal or a closing operation signal set in advance to the inflow and / or discharge valve when an abnormality of the rainwater storage facility is determined.

In the rainwater storage facility of claim 1 according to the present invention,
Water level measuring means for measuring at least the water level in the storage facility;
Transmitting means for transmitting the water level data obtained by the water level measuring means to the outside;
Therefore, it becomes possible to centrally manage the water levels of a plurality of rainwater storage facilities outside.
In claim 2,
A flow rate measuring means for measuring at least the amount of rainwater flowing into the storage facility;
Since the transmission means for transmitting the inflow amount data obtained by the flow rate measurement means to the outside is provided, the inflow amounts of a plurality of rainwater storage facilities can be concentrated and managed outside.
In claim 3,
A flow rate measuring means for measuring at least the amount of water discharged from the discharge pipe of the storage facility;
Since the transmission means for transmitting the discharge amount data obtained by the flow rate measurement means to the outside is provided, it becomes possible to centrally manage the drainage amounts of the plurality of rainwater storage facilities.

In the rainwater storage facility monitoring and management system according to claim 4,
Receiving means for receiving water level data transmitted from the rainwater storage facility according to claim 1 to the outside;
Rain data collection means for receiving rain data near the rainwater storage facility;
A calculation means for calculating at least one of inflow data and water level change data into the rainwater storage facility from the rainfall data;
Since the water level data obtained from the rainwater storage facility is compared with the predicted water level change amount to the rainwater storage facility obtained from the rain data, it has a judgment means to judge whether the rainwater storage facility is operating normally. Based on the water level data, it is possible to determine whether a plurality of rainwater storage facilities are operating normally.
In claim 5,
Receiving means for receiving inflow data from the rainwater storage facility according to claim 2;
Rain data collection means for receiving rain data near the rainwater storage facility;
A calculation means for calculating an inflow amount to the rainwater storage facility from the rainfall data;
Compared with the received rainwater inflow and the predicted inflow to the rainwater storage facility obtained from the rain data, it has a judgment means to judge whether the rainwater storage facility is operating normally. Thus, it is possible to determine whether a plurality of rainwater storage facilities are operating normally.
In claim 6,
Receiving means for receiving runoff data from the rainwater storage facility according to claim 3;
Since it has a judgment means that compares the received stormwater spillage with the predicted spillage set by the diameter of the spill pipe and determines whether the stormwater storage facility is operating normally, It is possible to determine whether the rainwater storage facility is operating normally.
In claim 7,
When the abnormality of the rainwater storage facility is determined, the abnormality is automatically notified to the administrator, so that it is possible to quickly cope with the occurrence of the abnormal situation.
In claim 8,
When an abnormality is detected in the rainwater storage facility, a preset opening or closing signal is automatically transmitted to the inflow and / or discharge valves, so that a predetermined operation is automatically performed in response to the occurrence of an abnormal situation. Can be performed.

Hereinafter, a rainwater storage facility according to the present invention will be described in detail with reference to the drawings showing embodiments thereof.
1 to 7 show various embodiments of a rainwater storage facility according to the present invention.
As shown in FIG.
The rainwater storage facility 1 includes one storage tank 2, a rainwater introduction part 3 that guides rainwater into the storage tank 2, an outflow manhole 4 that adjusts the outflow amount inside the storage tank 2, a discharge pipe 41 that discharges rainwater, Furthermore, it has a float (floating ball position detection) type water level gauge 5 for measuring the water level in the rainwater storage tank 2.
In addition, a digital data conversion device 6 that converts analog water level data obtained by the water level gauge 5 into digital water level data, and data transmission that transmits the digital water level data to a predetermined management device 10 via communication means such as the Internet. Means 7 are provided.
In the present embodiment, the water level gauge 5 is installed in the outflow manhole 4, but the installation location is not limited and may be installed anywhere in the rainwater storage tank 2, but the water level gauge such as garbage can be installed. The outflow manhole 4 having the lowest possibility of inflow of impurities that disturb the measurement is most preferable.

The storage tank 2 first digs a ground such as a parking lot, and places a number of unit members such as a synthetic resin plate material such as polypropylene and leg members in the excavation hole in a state where a waterproof sheet or the like is arranged along the wall surface of the excavation hole. The storage space is formed so that rainwater can be stored by combining the top, bottom, left, and right, and the load-bearing performance is T25 (load-bearing performance that can pass 25 tons of trucks). It is collected in the groove part provided in the lower end.
In addition, although not shown in the drawing, the drainage pipe 41 has a drain control valve, a water supply pump, a water supply pipe, a water supply pipe, a flow meter for measuring the flow rate of water supply flowing through the water supply pipe, and Overflow piping is provided.

  The rainwater introduction part 3 is provided in the upper part of the storage tank 2, and although not shown in figure, it is comprised so that rainwater may flow in from the roof of the building which is a water collection part through collective masses, such as a fence and a manhole. Has been.

The water level data measured by the water level gauge 5 in the rainwater storage tank 2 is sent to the digital data converter 6 as an electrical signal (analog water level data). The water level data converted from the analog water level data to the digital water level data by the digital data conversion device 6 is added with time data by the data transmission means 7 and sent to the external data processing device 10 via the communication means 8 such as the Internet. Sent to.
However, when the water level data output from the water level gauge 5 is digital water level data, the digital data converter 6 is not necessary.

As shown in FIG. 4, the data processing apparatus 10
A data receiving means 11 for collecting water level data of a plurality of rainwater storage tanks via a communication means 8 such as the Internet;
Storage means 12 for storing and storing the collected water level data;
Weather data collection means 13 for collecting weather data;
Calculating means 14 for calculating a predicted inflow based on weather data;
A determination means 15 for comparing the predicted inflow amount with the received water level data to determine the presence or absence of an abnormality,
When it is determined that an abnormality has occurred, there is provided an informing means 16 for informing that an abnormality has occurred in a preset procedure.

The data processing apparatus 10 configured as described above
When the water level data in the rainwater storage tank 2 is transmitted via the communication means 8, the data processing device 10 receives the water level data using the data receiving means 11 and stores it in the storage means 12. save.
In this way, the data receiving means 11 collects the water level data transmitted from the rainwater storage tanks installed in various places, and stores / stores it in the storage means 12.

The weather data collection means 13 includes:
The meteorological (rainfall) data of the point / region where the rainwater storage tank is installed is collected via the communication means 8 such as the Internet. For example, in the present embodiment, “analytical rainfall” data provided by the Ministry of Land, Infrastructure, Transport and Tourism can be preferably used. The Ministry of Land, Infrastructure, Transport and Tourism's “Analytical Rainfall” data is a 1km square detail of precipitation distribution by combining the Ministry of Land, Infrastructure, Transport and Tourism's River and Road Bureaus with radar, AMeDAS, etc. It was analyzed by.
This “analytical rainfall” data is created every 30 minutes. Moreover, the precipitation nowcast which provides the 1km square (mesh) precipitation of the whole country 6 hours ago can also be used suitably as the weather (rainfall) data concerning this invention.
The rainfall data in the vicinity of the rainwater storage tank is not particularly limited, but weather information obtained on the Internet, such as the Japan Meteorological Agency website, information provided for free or free of charge at the Meteorological Business Support Center and various sites Can be used. It is preferable to use paid data of public institutions from the viewpoint of information reliability.
In addition, it is preferable from the viewpoint of information accuracy that the rainfall information is not a predicted value but a past actual measured value.
Information such as meteorological radar, Doppler laser or multi-radical meter radar installed in each municipality can also be used. Furthermore, in order to improve the performance at a specific site, it is most preferable to install a rain gauge on the site and use the information.

The calculation means 14 calculates the amount of water flowing into the rainwater storage tank of the area based on the precipitation data included in the weather data of the area for each area where the rainwater storage tank is installed and for each predetermined time interval. And predictive water level change data of the rainwater storage tank that changes as a result are calculated.
The calculation means 14 further compares the predicted water level change data with the actual water level change data obtained by examining in advance, and obtains a correction operation that obtains predicted water level change data close to the actual water level change data. In actual calculation processing, expected water level change data closer to actual water level change data is obtained by taking the correction calculation into account.

  The determination unit 15 calculates the change in the water level data of the rainwater storage tank installed in the area for each area where the rainwater storage tank is installed and for each predetermined time interval. Compared with the expected water level change data of the rainwater storage tank, the difference data between the two is obtained, and when the difference data is within a predetermined threshold set in advance, from the inflow system to the rainwater storage tank 2 Is determined to be normal, and if the set threshold value is exceeded, it is determined that an abnormality has occurred in the range from the inflow system to the rainwater storage tank 2.

When it is determined by the determination means 15 that some abnormality has occurred, the notification means 16 outputs a preset abnormality occurrence signal in accordance with a preset procedure. This is notified to the outside.
For example, a preset notification lamp may be turned on, or a preset notification sound may be generated.
Also, a preset text abnormality notification mail may be automatically transmitted to a preset e-mail address.

  Alternatively, the notifying means 16 outputs an opening / closing operation signal set in advance according to the determined abnormality type to the opening / closing valve provided in the rainwater introduction unit 3 or the opening / closing valve provided in the discharge pipe 41 to flow in. The opening / closing valve on the side or the opening / closing valve on the outflow side may be automatically opened and closed.

In addition, the rainwater storage tank for the purpose of flood control and / or water use may be either underground or open type, but in order to prevent deterioration of water quality due to light and temperature, an underground type that can effectively use the ground is preferable.
The main material of the storage facility is not particularly limited, and may be a plastic underground storage tank, a concrete or precast concrete underground storage tank.
More preferably, the deposits that have flowed into the storage tank are automatically collected in one place to improve maintenance performance.
The water level meter 5 is not particularly limited as long as it can output an analog signal or a digital signal. The electromagnetic wave (reflection) type, the float (floating ball position detection) type, the pressure type, and the ultrasonic wave (reflection) type. Etc.
The flow meter 31 is not particularly limited as long as it can output flow rate data as an analog signal or a digital signal, and examples thereof include an electromagnetic type, an ultrasonic type, and a rotary type.
The digital data communication method by the data transmission means 7 is not particularly limited, and may be transmitted by wired communication means such as a cable or wireless communication means such as radio wave communication. For transmission to remote locations, the Internet (optical communication, ADSL, etc.), VPN, telephone line, etc. can be used.

Examples of the calculating means 14 The calculating means 14
Rainfall data W (mm / hr) obtained by means of weather data collection,
Pre-set rainwater collection area A (ha),
In addition, the inflow prediction amount Qin2 is calculated from the water collection coefficient α using the equation (1).
Qin2 (m3 / hr) = α × 10000A × W / 1000 formula (1)
In addition, based on the basic discharge amount Qout2 calculated from the orifice pipe diameter (zero in the case of a water tank, zero because there is no orifice) and the projected amount Ar (m2) of the rainwater storage tank, ).
h (mm) = (Qin2-Qout2) / Ar * 1000 formula (2)

In the case of an embodiment corresponding to claim 4,
The judging means 15
The predicted water level increase / decrease amount h obtained from Equation (2) was compared with the actual difference (= change amount) hr of the water level before and after the predicted time obtained from the rainwater storage / use facility, and the difference was set in advance. If it is within the threshold value, it is judged as normal, and if it exceeds the threshold value, it is judged as abnormal. However, if the water level obtained from the rainwater storage / use facility is higher than the overflow pipe height, it will be excluded from normal / abnormal judgment.

In the case of an embodiment corresponding to claim 5,
The judging means 15
Comparing the inflow prediction data obtained from Equation (1) with the actual inflow data Qin-r obtained from the rainwater storage / use facility, it is normal if the difference is within a preset threshold value. If it exceeds the threshold, it is determined as abnormal.
In this case, the cause of the abnormality can be determined as clogging of the inflow pipe or inflow (collection) system. Although the threshold value is not particularly limited, it is preferably about ± 10%. Furthermore, since the inflow fluctuation is large when the rainfall is 2 mm / hr or less, the abnormal judgment is when the rainfall is 2 mm / hr or less. It is preferable not to implement.

Embodiment of calculation means and determination means In the case of an embodiment corresponding to claim 6,
In the calculation means 14,
The basic discharge amount Qout2 calculated from the orifice tube diameter is obtained.
And in the judging means 15,
When the basic discharge Qout2 is compared with the actual runoff data Qout-r obtained from the rainwater storage / use facility, if the difference is within the preset threshold, it is normal and exceeds the threshold Is judged abnormal. In this case, it can be determined that the cause of the abnormality is a clogged outflow (drainage) pipe or outflow (drainage) system.

In the case of a composite system in which 4, 5 and 6 are combined after requesting embodiments of calculation means and determination means, it becomes possible to perform more detailed factor analysis. Most preferred is such a hybrid system.
For example, when the inflow amount Qin is normal, the discharge amount Qout is also normal, and the water level increase / decrease prediction amount h is abnormal, the seat is torn and the stored water leaks or the groundwater flows in. It can be judged.
Moreover, when the inflow amount Qin is 0 and the water level increase / decrease prediction amount h is changing, it can be determined that the seat is torn and the stored water leaks or the groundwater flows in.
Further, when the time to overflow level -A / (Qin-Qout) is shortened, it can be determined that the accumulation of dust is progressing.

Example of notification means When an abnormality is detected by the above method,
The notification means 16
An abnormal signal and / or document is automatically transmitted to a mobile phone of a person registered in advance such as an administrator and / or a terminal such as a PC at a preset location (address). This kind of rainwater storage facility monitoring and management system allows managers to recognize rainwater storage facility abnormalities at any time without having to regularly check rainwater storage tanks, and to quickly restore normal conditions. It becomes.

With reference to FIG. 7, the operation of the notification means will be described.
In the procedure 1, the water level data / inflow amount data / outflow amount data of the rainwater storage tank 2 are measured, converted into digital data in the procedure 2, and transmitted to the outside through the data transmission means in the procedure 3.
In step 4, the data receiving means of the data processing device 10 receives the data, and in step 5, the expected water level fluctuation data / expected inflow data / expected outflow data is calculated. In step 6, the presence / absence of an abnormality is determined. If there is no abnormality, the process ends. However, if it is determined that there is an abnormality, the abnormality information is transmitted in step 8, so that in step 9, the information is sent to the administrator PC or administrator mobile phone set in advance via the Internet. Anomaly information is reported.

Example of notification means By controlling the discharge valve according to weather data, etc., if one rainwater storage tank detects an abnormality in an integrated shared tank that expresses both functions of a flood control tank and a water use tank, priority is given to flood control safety It is also required for safety to switch to a single function that gives priority to either securing water, that is, water use. Therefore, when an abnormality is detected by the means of claims 1 to 6, a predetermined open or close signal is transmitted to the inflow and / or discharge valve, and the rainwater storage / water tank monitoring / management is characterized. By providing the system and service, the security of the system is maintained.

With reference to FIG. 8, the operation of the notification means will be described.
Since steps 1 to 8 are the same as those in FIG. 7, the description thereof is omitted, and only different steps 10 and 20 are described.
When operating this rainwater storage tank 2 with priority on the flood control function,
In the procedure 10, an opening / closing signal that opens the opening / closing valve on the inflow side of the rainwater storage tank 2 and opens the opening / closing valve on the discharge side is output. Therefore, it is possible to prevent the rainwater from overflowing on the inflow side and the rainwater from overflowing from the rainwater storage tank 2.
When operating this rainwater storage tank 2 with priority on the water utilization function,
In step 20, an opening / closing signal is output to open the opening / closing valve on the inflow side of the rainwater storage tank 2 and close the opening / closing valve on the discharge side. Therefore, it can be sufficiently stored in the rainwater storage tank 2 and used for water utilization.

In another embodiment of the rainwater storage tank shown in FIG. 2, a flow meter 31 is provided in the inflow pipe 35 from the rainwater introduction unit 3 to the storage tank 2.
Instead of the water level data, the analog flow data obtained by the flow meter 31 is sent to the digital data converter 6. The digital data conversion device 6 converts the analog flow rate data into the digital flow rate data, adds the time data by the data transmission means 7, and transmits it to the external data processing device 10 via the communication means 8 such as the Internet. Is done.
Since the processing on the data processing apparatus 10 side is the same as that described above, description thereof is omitted.

In another embodiment of the rainwater storage tank shown in FIG. 3, a flow meter 42 for measuring the discharge amount is provided in the discharge pipe 41 from the storage tank 2.
Then, instead of the water level data, the analog flow rate data obtained by the flow meter 42 is sent to the digital data converter 6. The digital data conversion device 6 converts the analog flow rate data into the digital flow rate data, adds the time data by the data transmission means 7, and transmits it to the external data processing device 10 via the communication means 8 such as the Internet. Is done.
Since the processing on the data processing apparatus 10 side is the same as that described above, description thereof is omitted.

FIG. 5 is a configuration example of a system including the rainwater storage tank 2 and the data processing device 10 shown in FIG.
FIG. 6 is a configuration example of a system including the rainwater storage tank 2 and the data processing device 10 illustrated in FIG. 3.

 The storage tank 2 is a shared tank for water utilization tank and flood control tank, and when the water level detected by the water level meter 21 exceeds a predetermined upper limit, the electromagnetic valve of the drain pipe 41 is opened to drain the water. Control to do. In this manner, the amount of drainage is determined from the rainfall forecast, the area of the water collection area, the expected flow rate into the storage tank, and the storage volume in the storage tank obtained by the water level gauge 21 and the like, and drainage control is performed. The solenoid valve of the drain pipe 41 has a diameter that can secure a predetermined amount of drainage.

 In order to function sufficiently as a shared tank for water use tank and flood control tank, when rain is expected based on weather data, the electromagnetic valve of the drain pipe 41 is opened to discharge the rainwater remaining in the storage tank 2. While the storage tank 2 functions as a flood control tank, the rain valve remaining in the storage tank 2 is stored by closing the solenoid valve of the drain pipe 41 during a period when there is no possibility of rain predicted based on weather data. By continuing, the storage tank 2 can be functioned as a water-use tank.

 In the present embodiment, the amount of stored water in the storage tank 2 is controlled by opening and closing the electromagnetic valve in the drain pipe 41, but not limited to the electromagnetic valve, for example, the amount of stored water such as an air valve or a hydraulic valve. A controllable on-off valve may be used.

  Moreover, since one storage tank functions as a water-saving tank and also functions as a water-control tank, it is possible to use a rainwater storage facility for the purpose of both water use and water-control only by constructing one storage tank. Therefore, land use efficiency can be significantly increased and construction costs can be greatly reduced.

As mentioned above, although the Example as an example was demonstrated about embodiment of this invention, it is not restricted to the Example mentioned above.

The present invention can provide a rainwater storage facility in which one storage tank functions as a water-saving tank and also functions as a flood control tank.

It is the block diagram which showed the structure of embodiment of the rainwater storage facility concerning this invention. It is a block diagram of the rainwater storage facility of another Example. Furthermore, it is a block diagram of the rainwater storage facility of another Example. Furthermore, it is a block diagram of the rainwater storage facility of another Example. Furthermore, it is a block diagram of the rainwater storage facility of another Example. Furthermore, it is a block diagram of the rainwater storage facility of another Example. It is explanatory drawing explaining operation | movement in the rainwater storage facility concerning this invention. It is explanatory drawing explaining operation | movement of another Example in the rainwater storage facility concerning this invention. It is a block diagram of the rainwater storage facility for flood control of a prior art example. It is a block diagram of the rainwater storage facility for flood control of another conventional example. It is a block diagram of the rainwater storage facility for water use of a prior art example. It is a block diagram of the rainwater storage facility for flood control and water utilization of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rainwater storage facility 2 Reservoir 3 Rainwater introduction part 4 Outflow manhole 5 Water level meter 6 Digital data converter 7 Data transmission means 8 Communication means 10 Data processing apparatus 11 Data reception means 12 Storage means 13 Weather data collection means 14 Calculation means 15 Determination Means 16 Notification means

Claims (8)

In a rainwater storage facility for the purpose of flood control and / or water use, which has one storage tank for storing rainwater flowing in from the inflow port,
Water level measuring means for measuring at least the water level in the storage facility;
Transmitting means for transmitting the water level data obtained by the water level measuring means to the outside;
A rainwater storage facility characterized by comprising: In a rainwater storage facility for the purpose of flood control and / or water use, which has one storage tank for storing rainwater flowing in from the inflow port,
A flow rate measuring means for measuring at least the amount of rainwater flowing into the storage facility;
A rainwater storage facility comprising transmission means for transmitting the inflow data obtained by the flow measurement means to the outside. In a rainwater storage facility for the purpose of flood control and / or water use, which has one storage tank for storing rainwater flowing in from the inflow port,
A flow rate measuring means for measuring at least the amount of water discharged from the discharge pipe of the storage facility;
A rainwater storage facility comprising transmission means for transmitting emission data obtained by a flow rate measurement means to the outside. Receiving means for receiving water level data transmitted from the rainwater storage facility according to claim 1 to the outside;
Rain data collection means for receiving rain data near the rainwater storage facility;
A calculation means for calculating at least one of inflow data and water level change data into the rainwater storage facility from the rainfall data;
Comparing the water level data obtained from the rainwater storage facility with the predicted water level change amount to the rainwater storage facility obtained from the rain data, and a judgment means for judging whether the rainwater storage facility is operating normally A rainwater storage facility monitoring and management system. Receiving means for receiving inflow data from the rainwater storage facility according to claim 2;
Rain data collection means for receiving rain data near the rainwater storage facility;
A calculation means for calculating an inflow amount to the rainwater storage facility from the rainfall data;
A rainwater storage system comprising a judging means for comparing the received rainwater inflow amount with the predicted inflow amount to the rainwater storage facility obtained from the rain data and determining whether the rainwater storage facility is operating normally Facility monitoring and management system. Receiving means for receiving runoff data from the rainwater storage facility according to claim 3;
The rainwater storage facility is characterized by comprising a judging means for comparing the received rainwater outflow amount with the predicted outflow amount set by the diameter of the outflow pipe and judging whether the rainwater storage facility is operating normally. -Management system. In the monitoring and management system of the rainwater storage facility according to any one of claims 4, 5 and 6,
A rainwater storage facility monitoring and management system, further comprising a notification means for automatically notifying an administrator of an abnormality when a rainwater storage facility abnormality is determined. In the rainwater storage facility monitoring and management system according to any one of claims 4, 5, and 6,
A rainwater storage facility characterized by further comprising notification means for automatically transmitting an opening operation signal or a closing operation signal set in advance to the inflow and / or discharge valve when an abnormality is detected in the rainwater storage facility. Monitoring and management system.

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