Roof rainwater collection, power generation and purification integrated system

Abstract

The invention relates to the technical field of rainwater collection, and discloses a roof rainwater collection, power generation and purification integrated system which comprises a power generation mechanism, a collecting pipe, a rainwater collection pipe arranged on a building, a water tank communicating with the rainwater collection pipe, and a first pipeline and a second pipeline both communicating with the bottom of the water tank. One ends, far away from the water tank, of the first pipeline and the second pipeline are communicated with a collecting pipe; an outlet of the collecting pipe is connected with a multi-stage water purification mechanism capable of purifying water; a first valve is arranged on the first pipeline, a second valve is arranged on the second pipeline, and the diameter of the first pipeline is smaller than that of the collecting pipe; the power generation mechanism comprises a first hydroelectric generation device installed on the first pipeline and a second hydroelectric generation device installed on the collecting pipe, and the rated power of the first hydroelectric generation device is smaller than that of the second hydroelectric generation device. By arranging the roof rainwater collection, power generation and purification integrated system, rainwater potential energy can be converted into electric energy regardless of the rainfall.

Description

Technical Field

[0001] This invention relates to the field of rainwater harvesting technology, and in particular to an integrated rooftop rainwater harvesting, power generation, and purification system. Background Technology

[0002] During natural rainfall, houses collect rainwater, and rainwater from the roof flows into drainage pipes and is discharged in a timely manner.

[0003] Existing technologies include rooftop rainwater harvesting devices that generate electricity by collecting rainwater to impact hydroelectric power generation devices. However, rainfall fluctuates significantly due to regional and seasonal differences. For example, annual rainfall differs significantly between the south and the north, and summer and winter rainfall also vary in the same region. This leads to a contradiction in the application of existing devices for hydroelectric power generation: if the rated power of the hydroelectric power generation device is too large, it cannot meet the power generation requirements when rainfall is low; if the rated power of the hydroelectric power generation device is too small, it is prone to rooftop rainwater blockage due to insufficient drainage capacity during the rainy season in summer. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an integrated rooftop rainwater harvesting, power generation, and purification system.

[0005] This invention provides an integrated rooftop rainwater harvesting, power generation, and purification system, comprising a power generation mechanism, a collection pipe, a rainwater collection pipe installed on the building, a water tank connected to the rainwater collection pipe, and a first pipe and a second pipe, both connected to the bottom of the water tank. The ends of the first and second pipes furthest from the water tank are both connected to the collection pipe, and a multi-stage water purification mechanism capable of purifying water quality is connected to the outlet of the collection pipe. A first valve is provided on the first pipe, and a second valve is provided on the second pipe. The diameter of the first pipe is smaller than the diameter of the collection pipe. The power generation mechanism includes a first hydroelectric generator installed on the first pipe and a second hydroelectric generator installed on the collection pipe. The rated power of the first hydroelectric generator is smaller than the rated power of the second hydroelectric generator.

[0006] Optionally, it also includes a controller, with a first pressure sensor located upstream of the first valve on the first pipeline, and a second pressure sensor and a temperature sensor located upstream of the second valve on the second pipeline. The controller is electrically connected to the first pressure sensor, the second pressure sensor, the temperature sensor, the first valve, and the second valve, respectively.

[0007] Optionally, the first pipe is inclined and has a baffle inside that can guide the water in the first pipe to the turbine of the first hydroelectric power generation device.

[0008] Optionally, the multi-stage water purification system includes a debris-blocking device capable of intercepting impurities in the water, a water purifier capable of purifying the water, and a water storage device capable of storing water; the inlet of the debris-blocking device is connected to the outlet of the manifold, the outlet of the debris-blocking device is connected to the inlet of the purifier through a third pipe, and the outlet of the purifier is connected to the inlet of the water storage device through a fourth pipe.

[0009] Optionally, the multi-stage water purification system also includes a water pump pipe and a water pump mounted on the water pump pipe. One end of the water pump pipe extends into the water storage device, and the other end is connected to the water tank.

[0010] Optionally, the interception device includes a sewage interception tank, which is equipped with a filter screen and divides the sewage interception tank into a first sub-tank and a second sub-tank. The collection pipe is connected to the first sub-tank, and the third pipe is connected to the second sub-tank.

[0011] Optionally, the first sub-pool is equipped with a storage chamber capable of holding impurities, and the bottom of the storage chamber is equipped with a sewage pipe leading to the outside of the intercepting pool.

[0012] Optionally, the purifier includes multiple water purification devices connected in series via connecting pipes. The outlets of the upstream water purification device and the wastewater interception device are connected via a third pipe, and the inlets of the downstream water purification device and the water storage device are connected via a fourth pipe.

[0013] Optionally, the water purification device includes a tank with multiple layers of packing material inside; an inlet pipe is provided at the top of the tank and an outlet pipe is provided at the bottom of the tank. The inlet pipe is connected to the outlet pipe of the upstream water purification device or a third pipe, and the outlet pipe is connected to the inlet pipe of the downstream water purification device or a fourth pipe.

[0014] Optionally, a flow straightener is provided horizontally above the packing layer inside the tank to change the flow velocity and direction of the water flow.

[0015] The technical solution provided by the embodiments of the present invention has the following advantages compared with the prior art: 1. By setting up a first pipe and a second pipe, a small-rated-power first hydroelectric generator is installed in the first pipe, and a large-rated-power second hydroelectric generator is installed on the collector pipe, forming a dual-path power generation and drainage structure. When the rainfall is small (such as in northern winters or arid regions), the second valve can be closed and the first valve opened. As rainwater flows through the first pipe, the small-power generator generates electricity stably, avoiding the problem of existing high-power generators not generating electricity in light rain. When the rainfall is large (such as in southern summers or heavy rain), the first and second valves can be opened simultaneously, allowing rainwater to quickly flow into the collector pipe, thereby enhancing drainage capacity and preventing roof blockage. At the same time, by setting up the first and second hydroelectric generators, the coverage of power generation scenarios is increased, and rainwater potential energy can be converted into electrical energy regardless of the rainfall amount.

[0016] 2. The multi-stage water purification mechanism installed at the outlet of the collection pipe can classify and deeply purify the collected rainwater. Through multi-stage filtration, impurities in the rainwater can be effectively removed, preventing rainwater from being affected by poor water quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the power generation mechanism provided in Embodiment 1 of the present invention, which is located in the first pipe and the collector pipe.

[0018] Figure 2 This is a schematic diagram of the multi-stage water purification mechanism provided in Embodiment 1 of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of a water tank and a water storage device connected by a pumping pipe, as provided in Embodiment 1 of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the pollution interception device provided in Embodiment 1 of the present invention.

[0021] Figure 5 This is a schematic diagram of the water purification device provided in Embodiment 1 of the present invention.

[0022] Explanation of reference numerals in the attached drawings: 1-1, rainwater collection pipe; 1-2, power generation mechanism; 1-3, first hydroelectric power generation device; 3-1, collection pipe; 3-2, sewage pipe; 3-3, intercepting tank; 3-4, filter screen; 3-5, storage bin; 4-1, third pipeline; 4-2, purifier; 4-3, connecting pipeline; 4-4, water purification device; 4-5, air valve; 4-6, water inlet pipe; 4-7, inspection hole; 4-8, rectifier plate; 4-9, flushing pipeline; 4-10, activated carbon layer; 4-11, inspection door; 4-12, sand and gravel layer; 4-13, water outlet pipe; 5-1, water tank; 5-2, first valve; 5-3, second valve; 6-1, water storage tank; 6-2, water supply pipe; 7-1, water pump; 7-2, pumping pipe. Detailed Implementation

[0023] The following detailed description of a specific embodiment of the present invention is provided in conjunction with the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] Example 1: like Figure 1 and Figure 2 As shown, a rooftop rainwater harvesting, power generation, and purification integrated system includes a power generation mechanism 1-2, a collection pipe 3-1, a rainwater collection pipe 1-1 installed on the building, a water tank 5-1 connected to the rainwater collection pipe 1-1, and a first pipe and a second pipe, both connected to the bottom of the water tank 5-1. The ends of the first pipe and the second pipe away from the water tank 5-1 are both connected to the collection pipe 3-1. A multi-stage water purification mechanism capable of purifying water quality is connected to the outlet of the collection pipe 3-1. A first valve 5-2 is provided on the first pipe, and a second valve 5-3 is provided on the second pipe. The diameter of the first pipe is smaller than the diameter of the collection pipe 3-1. The power generation mechanism 1-2 includes a first hydroelectric generator 1-3 installed on the first pipe and a second hydroelectric generator installed on the collection pipe 3-1. The rated power of the first hydroelectric generator 1-3 is smaller than the rated power of the second hydroelectric generator.

[0026] In this embodiment, the first hydroelectric power generation device 1-3 and the second hydroelectric power generation device are both existing technologies, both including a water turbine and a micro generator. The water turbine is installed in the corresponding pipe, and the micro generator is installed outside the pipe. The output shaft of the micro generator is dynamically sealed to the pipe and extends into the pipe to connect with the corresponding water turbine. In addition, a battery capable of storing electricity is also provided.

[0027] It also includes a controller. A first pressure sensor is provided on the first pipeline upstream of the first valve 5-2, and a second pressure sensor and a temperature sensor are provided on the second pipeline upstream of the second valve 5-3. The controller is electrically connected to the first pressure sensor, the second pressure sensor, the temperature sensor, the first valve 5-2, and the second valve 5-3, respectively.

[0028] In this embodiment, the first pressure sensor, the second pressure sensor, and the temperature sensor monitor pressure and temperature information in real time. When the monitoring value of the first pressure sensor is greater than the first preset value (when the rainfall is small), the controller opens the first valve 5-2, and the first hydroelectric power generation device 1-3 generates electricity. When the second pressure sensor is greater than the second preset value, the controller opens the first valve 5-2 and the second valve 5-3 (when the rainfall is large), and both hydroelectric power generation devices generate electricity. When the monitoring value of the temperature sensor is less than 3°C, the controller opens the second valve 5-3 to drain the water in the water tank 5-1 to prevent the water from freezing inside the tank.

[0029] The first pipe is inclined and has a baffle inside that can guide the water in the first pipe to the water turbine of the first hydroelectric power generation device 1-3.

[0030] like Figure 2 As shown, the multi-stage water purification system includes a debris-blocking device that can intercept impurities in the water, a purifier 4-2 that can purify the water, and a water storage device that can store water. The inlet of the debris-blocking device is connected to the outlet of the collection pipe 3-1, the outlet of the debris-blocking device is connected to the inlet of the purifier 4-2 through a third pipe 4-1, and the outlet of the purifier 4-2 is connected to the inlet of the water storage device through a fourth pipe.

[0031] In this embodiment, the third pipe 4-1 is equipped with a water pump capable of drawing water from the wastewater interception device to the purifier 4-2. like Figure 2 and Figure 3 As shown, the multi-stage water purification mechanism also includes a water pump 7-2 and a water pump 7-1 installed on the water pump 7-2. One end of the water pump 7-2 extends into the water storage device, and the other end is connected to the water tank 5-1.

[0032] If the water quality is poor and there are still impurities after purification by the purifier, the water is pumped to the water tank for circulation and purification.

[0033] like Figure 4 As shown, the interception device includes a sewage interception tank 3-3, in which a filter screen 3-4 is installed, dividing the sewage interception tank 3-3 into a first sub-tank and a second sub-tank. The collection pipe 3-1 is connected to the first sub-tank, and the third pipe 4-1 is connected to the second sub-tank.

[0034] The first sub-pool is equipped with a storage chamber 3-5 that can hold impurities. At the bottom of the storage chamber 3-5 is a drain pipe 3-2 leading to the outside of the intercepting pool 3-3 (the drain pipe is equipped with a valve).

[0035] The storage bin can store solid impurities, and the impurities in the storage bin can be periodically cleaned by opening the valve on the drain pipe periodically.

[0036] The purifier 4-2 includes multiple water purification devices 4-4 connected in series via connecting pipes 4-3. The upstream water purification device 4-4 and the outlet of the wastewater interception device are connected via a third pipe 4-1, and the downstream water purification device 4-4 and the inlet of the water storage device are connected via a fourth pipe.

[0037] like Figure 5 As shown, the water purification device 4-4 includes a tank, which contains multiple layers of packing material capable of purifying water. The top of the tank is equipped with an inlet pipe 4-6, and the bottom of the tank is equipped with an outlet pipe 4-13. The inlet pipe 4-6 is connected to the outlet pipe 4-13 of the upstream water purification device 4-4 or the third pipe 4-1, and the outlet pipe 4-13 is connected to the inlet pipe 4-6 of the downstream water purification device 4-4 or the fourth pipe.

[0038] In this embodiment, cavities are formed on both the upper and lower sides of the tank, and the cavities and the packing layer are separated by a drain plate, which is installed in the tank.

[0039] like Figure 5 As shown, in this embodiment, the tank is provided with an inspection door 4-11, through which the packing of the packing layer can be replaced. The tank is provided with an inspection hole 4-7 for maintenance. In addition, an air valve 4-5 is provided at the top of the tank, and a flushing pipe 4-9 is provided at the upper part of the tank. Water is injected into the tank through the flushing pipe 4-9 for flushing, and water is injected into the tank through the water outlet pipe 4-13 to achieve backflushing. The backflushing water flows out through the air valve 4-5.

[0040] In this embodiment, the packing layer includes, from top to bottom, an activated carbon layer 4-10 and a sand and gravel layer 4-12, etc. (other packing materials, such as zeolite, can be set according to the actual situation). Adjacent packing layers are separated by a filter screen, and the bottom layer of the packing layer is also set on a drain plate (for supporting the packing).

[0041] Above the packing layer inside the tank, there is a flow straightener 4-8 that can change the flow velocity and flow direction of the water.

[0042] In this embodiment, after rainwater enters the tank through the outlet of the inlet pipe 4-6, it falls onto the rectifier plate 4-8. The rectifier plate 4-8 changes the flow rate and direction of the water flow through its own structure, and then the rainwater naturally falls onto the packing layer for purification.

[0043] In this embodiment, frequency converters are installed between the water pump and the controller to adjust the speed of water intake and pumping. All power transmission lines are housed in metal conduits to prevent direct contact with rainwater.

[0044] The above inventions are merely a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A rooftop rainwater harvesting, power generation, and purification integrated system, characterized in that, It includes a power generation unit, a manifold, a rainwater collection pipe installed in the building, a water tank connected to the rainwater collection pipe, and a first pipe and a second pipe, both of which are connected to the bottom of the water tank. The ends of both the first and second pipes furthest from the water tank are connected to the manifold, and the outlet of the manifold is connected to a multi-stage water purification system capable of purifying water quality. The first pipe is equipped with a first valve, and the second pipe is equipped with a second valve. The diameter of the first pipe is smaller than the diameter of the manifold. The power generation mechanism includes a first hydroelectric power generation device installed on a first pipeline and a second hydroelectric power generation device installed on a collector pipe, wherein the rated power of the first hydroelectric power generation device is less than the rated power of the second hydroelectric power generation device.

2. The rooftop rainwater harvesting, power generation, and purification integrated system as described in claim 1, characterized in that, It also includes a controller, a first pressure sensor located upstream of the first valve is provided on the first pipeline, a second pressure sensor and a temperature sensor located upstream of the second valve are provided on the second pipeline, and the controller is electrically connected to the first pressure sensor, the second pressure sensor, the temperature sensor, the first valve and the second valve respectively.

3. The rooftop rainwater harvesting, power generation, and purification integrated system as described in claim 1, characterized in that, The first pipe is inclined and has a baffle inside that can guide the water in the first pipe to the water turbine of the first hydroelectric power generation device.

4. The rooftop rainwater harvesting, power generation, and purification integrated system as described in claim 1, characterized in that, The multi-stage water purification system includes a debris-blocking device that can intercept impurities in the water, a purifier that can purify the water, and a water storage device that can store water. The inlet of the debris-blocking device is connected to the outlet of the manifold, the outlet of the debris-blocking device is connected to the inlet of the purifier through a third pipe, and the outlet of the purifier is connected to the inlet of the water storage device through a fourth pipe.

5. The rooftop rainwater harvesting, power generation, and purification integrated system as described in claim 4, characterized in that, The multi-stage water purification system also includes a water pump pipe and a water pump mounted on the water pump pipe. One end of the water pump pipe extends into the water storage device, and the other end is connected to the water tank.

6. The rooftop rainwater harvesting, power generation, and purification integrated system as described in claim 4, characterized in that, The pollution interception device includes a pollution interception tank, which is equipped with a filter screen that divides the pollution interception tank into a first sub-tank and a second sub-tank. A collection pipe is connected to the first sub-tank, and a third pipe is connected to the second sub-tank.

7. The rooftop rainwater harvesting, power generation, and purification integrated system as described in claim 6, characterized in that, The first sub-pool is equipped with a storage chamber capable of holding impurities, and the bottom of the storage chamber is equipped with a sewage pipe leading to the outside of the intercepting pool.

8. The rooftop rainwater harvesting, power generation, and purification integrated system as described in claim 4, characterized in that, The purifier includes multiple water purification devices connected in series via connecting pipes. The outlets of the upstream water purification device and the wastewater interception device are connected via a third pipe, and the inlets of the downstream water purification device and the water storage device are connected via a fourth pipe.

9. The rooftop rainwater harvesting, power generation, and purification integrated system as described in claim 8, characterized in that, The water purification device includes a tank, and the tank is equipped with multiple layers of filler material that can purify water. The tank is equipped with an inlet pipe at the top and an outlet pipe at the bottom. The inlet pipe is connected to the outlet pipe of the upstream water purification device or a third pipe, and the outlet pipe is connected to the inlet pipe of the downstream water purification device or a fourth pipe.

10. The rooftop rainwater harvesting, power generation, and purification integrated system as described in claim 9, characterized in that, Above the packing layer inside the tank, a flow straightener is provided in the horizontal direction, which can change the flow velocity and flow direction of the water.

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