Multi-stage power generation system using a circulating water system

Abstract

Multi-stage power generation system using circulating water, characterized in that it comprises multi-stage water basins at degressive heights, several siphon devices are provided between adjacent water basins to supply the water from the water basin at a low level to the water basin at a high level, a bottom part of the water basin at the highest level is connected to the water basin at the lowest level by a return line, and a turbine is provided on the return line which is connected to a generator in drive connection;that the siphon device comprises a water storage box located above the water basin in a high position, the water storage box is connected at a top to a suction pipe, at a bottom to an outlet pipe, an inlet end of the suction pipe is located inside the water basin in a low position, the outlet pipe is directed vertically downwards and an outlet is located inside the water basin in a high position.

Description

Technical field

[0001] The present invention belongs to the technical field of hydroelectric power generation, specifically relating to a multi-stage power generation system using circulating water. State of the art

[0002] With the continuous growth of global energy demand and increasing pressure for environmental protection, the development of green, renewable energy has become a crucial direction for countries around the world. Hydropower generation is a clean and efficient form of renewable energy that has long played an important role in the global energy landscape. However, traditional hydropower generation typically relies on a large reservoir and a relatively steep head of water; not only is the investment substantial and the construction cycle lengthy, but it can also have a detrimental impact on the environment.

[0003] Furthermore, the siphon principle is a natural phenomenon that allows for the automatic flow of liquids depending on air pressure and gravity. It is already widely used in areas such as agricultural irrigation and water cycles. For the development of small, distributed clean energy systems, the siphon principle is being used in hydropower generation systems, enabling the reuse of water flow and the creation of elevation differences independently of an external energy input. Disclosure of the invention

[0004] To overcome the aforementioned technical problem, the present invention provides a multi-stage power generation system using a circulating water system. The water is conveyed from a low to a high level using the siphon principle, creating a controllable water level gradient. This gradient drives a turbine to convert the energy, thus enabling stable power generation. Exploring this technology offers the potential to overcome the limitations of terrain and gradient in traditional hydropower generation, providing an environmentally friendly and efficient energy solution for remote mountainous areas, rural regions, and even urban rainwater harvesting systems.

[0005] The present invention uses the following technical solution: Multi-stage power generation system using a circulating water system, comprising multi-stage water basins at degressive heights, with several siphon devices provided between adjacent water basins to supply water from the water basin at a low height to the water basin at a high height, a bottom part of the water basin at the highest height is connected to the water basin at the lowest height by a return line, a turbine is provided on the return line which is connected to a generator in drive connection; The siphon device comprises a water storage box located above the water basin in the high position, the water storage box is connected at a top section to a suction pipe, at a bottom section to an outlet pipe, an inlet end of the suction pipe is located inside the water basin in the low position, the outlet pipe is directed vertically downwards and an outlet is located inside the elevated tank.

[0006] Preferably, the water storage box is connected to a filling pipe, the filling pipe is equipped with a filling valve, the filling pipe is connected to a water pump which is arranged inside the water basin in the high position, a vent opening is provided at the head of the water storage box which is equipped with a vent valve.

[0007] Preferably, a total of four levels of water basins and three layers of siphon devices are provided.

[0008] Preferably, the liquid level difference between the adjacent water basins is identical, with the height of the highest water basin being 10 m.

[0009] Preferably, a water purification filter material is placed inside the water basin through a mesh frame.

[0010] Preferably, the outlet pipe is equipped with an outlet valve.

[0011] Compared to existing technology, the advantageous effects of the present invention are as follows: 1. Green, environmentally friendly, zero CO2 emissions. In the operating process of the device, it is not necessary to consume fossil fuels; there is no emission of exhaust gas or wastewater. 2. Simple construction, relatively low costs. Compared to the conventional hydroelectric power plant, the device does not require a high dam or a large reservoir; the conversion of energy is made possible simply by a siphon pipe in combination with the turbine, and the manufacturing and maintenance costs are reduced. 3. It can be widely used in low-gradient or flatland regions. The siphon is innovatively used to construct an artificially created water level difference, breaking the dependence of conventional hydropower on a natural gradient of the terrain, and offering greater adaptability and flexibility in deployment. 4. Energy recycling, increasing the efficiency of the water resource. It can be combined with the water cycle system, enabling the secondary use of rainwater, river water and drainage, etc., while ensuring water supply and simultaneously generating electricity, thus increasing the utilization rate of the water resource. 5. It facilitates modular construction and is suitable for distributed deployment. The device can be assembled and expanded as needed, and is particularly suitable for use in households, agriculture, or areas far from the power grid, with good prospects for application and widespread use. 6. It has exploratory research value. The combination of the siphon principle with hydropower generation has exploratory and innovative significance on a theoretical and structural engineering level, and has the prospect of leading the way in a new direction for small-scale hydropower development. Explanation of the illustrations

[0012] Fig. is a diagram of the entirety of the present invention; Fig. This is a diagram of a siphon device. Indication of reference numerals:

[0013] 1. Water basin; 2. Siphon device; 21. Water storage box; 22. Suction pipe; 23. Outlet pipe; 24. Vent valve; 25. Filling valve; 26. Filling pipe; 27. Water pump; 28. Outlet valve; 3. Return line; 4. Turbine; 5. Generator. Designs

[0014] The following are detailed embodiments of the present invention. These embodiments are shown schematically in the figures, where identical or similar reference symbols from beginning to end represent identical or similar elements or elements with identical or similar functions. Unless specifically stated otherwise, the raw materials, equipment, etc., used are commercially available or common in the relevant field. Unless specifically stated, the methods used in the embodiments are all conventional methods in the relevant field. The embodiments described below with reference to the accompanying figures are exemplary and serve only to illustrate the present invention; they should not be understood as limiting the present invention.

[0015] Referring to the Fig.A multi-stage power generation system using circulating water comprises four layers of water basins 1 at decreasing heights. The liquid level difference between adjacent water basins 1 is identical. The height of the highest water basin 1 is 10 m. Several siphon devices 2 are provided between the adjacent water basins 1 to transfer the water from the water basin 1 at a lower level to the water basin 1 at a higher level. Because there are a total of four layers of water basins 1, a total of three layers of siphon devices 2 are provided. A bottom section of the water basin 1 at the highest level is connected to the water basin 1 at the lowest level by a return line 3. A turbine 4 is provided on the return line 3, which is connected to a generator 5.The siphon device 2 comprises a water storage box 21 located above the water basin 1 in the high position, the water storage box 21 is connected at a top part to a suction pipe 22, and at a bottom part to an outlet pipe 23, an inlet end of the suction pipe 22 is located inside the water basin 1 in the low position, the outlet pipe 23 is directed vertically downwards and an outlet is located inside the water basin 1 in the high position, the outlet pipe 23 is provided with an outlet valve 28.

[0016] To facilitate the starting and control of the siphon device 2, the water storage box 21 is connected to a filling pipe 26, the filling pipe 26 is equipped with a filling valve 25, the filling pipe 26 is connected to a water pump 27, which is arranged in the upper position inside the water basin 1, a vent opening is provided at the top of the water storage box 21, which is equipped with a vent valve 24.

[0017] To maintain the pure water quality, a water purification filter material is placed inside water basin 1 through a mesh frame.

[0018] One work process of the multi-stage power generation system using a circulating water system is:

[0019] The outlet valve 28 is closed, the filling valve 25 and the water pump 27 are open; water is quickly supplied to the water storage tank 21 via the water pump 27 and the filling pipe 26; air inside the tank is released through the open vent valve 24; after a certain quantity of water has been supplied to the tank, the filling valve 25 and the vent valve 24 are closed, the siphon device 2 begins to operate; due to the force of gravity, the water inside the tank falls from the outlet pipe 23 and flows into the water basin 1 at the upper level, thus conveying the water from the lower water basin 1 to the upper water basin 1, enabling the gradual upward conveyance of the water.The water pressure within water basin 1 is greatest at the highest level, within which the water returns from the return line 3 to water basin 1 at the lowest level; in the return process, the turbine 4 drives the generator 5 to generate electricity.

[0020] Although the embodiments of the present invention have already been indicated and illustrated, the person skilled in the art in the relevant field can understand that, for the embodiments mentioned above, several changes, modifications, substitutions and deformations may have been carried out without deviation from the principle and guiding idea of ​​the present invention, the scope of the present invention is limited by claims and their equivalents.

Claims

Multi-stage power generation system using circulating water, characterized in that it comprises multi-stage water basins at degressive heights, several siphon devices are provided between adjacent water basins to supply the water from the water basin at a low level to the water basin at a high level, a bottom part of the water basin at the highest level is connected to the water basin at the lowest level by a return line, and a turbine is provided on the return line which is connected to a generator in drive connection;that the siphon device comprises a water storage box located above the water basin in a high position, the water storage box is connected at a top to a suction pipe, at a bottom to an outlet pipe, an inlet end of the suction pipe is located inside the water basin in a low position, the outlet pipe is directed vertically downwards and an outlet is located inside the water basin in a high position. Multi-stage power generation system using circulating water according to claim 1, characterized in that the water storage box is connected to a filling pipe, the filling pipe is provided with a filling valve, the filling pipe is connected to a water pump which is arranged in the high position within the water basin, and a vent opening is provided at the head of the water storage box which is provided with a vent valve. Multi-stage power generation system using circulating water according to claim 1, characterized in that a total of four stages of water basins and three layers of siphon devices are provided. Multi-stage power generation system using circulating water according to claim 3, characterized in that the liquid level height difference of the adjacent water basins is identical. Multi-stage power generation system using circulating water according to claim 1, characterized in that a water purification filter material is placed within the water basin by means of a mesh frame. Multi-stage power generation system using circulating water according to claim 1, characterized in that the outlet pipe is provided with an outlet valve.

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