Small-fall natural water flow multi-point type distribution power generation system

Abstract

The utility model discloses a small-fall natural water flow multi-point type distribution power generation system, which comprises a self-feedback water valve, a permanent magnet bearing water turbine, a permanent magnet generator, a self-feedback control system and a power storage system, and is characterized in that the self-feedback water valve is used for guiding water flow to the position of the water turbine and controlling the flow speed and the flow rate of the water flow flowing into the water turbine; the permanent magnet bearing water turbines are distributed on a small-fall water flow path and a river channel bending area, and kinetic energy of water flow is converted into mechanical energy. The permanent magnet generator is connected with the permanent magnet bearing water turbine, and mechanical energy is generated through rotation of blades of the permanent magnet bearing water turbine and converted into electric energy. Electric energy output by the permanent magnet generator is boosted by the transformer and then transmitted to a power grid or supplied to other power equipment for use. By means of the layout of the small water-turbine generator set and automatic induction regulation and control of water flow, distributed power generation is achieved, water flow energy is fully utilized, power generation efficiency is improved, kinetic energy of the water flow is converted into electric energy, and high efficiency and sustainability are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydroelectric power generation, and particularly relates to a multi-point distributed power generation system of natural water flow with a small drop. Background Art

[0002] With the vigorous promotion of low-carbon and environmental protection concepts, water as a renewable and clean energy has received much attention. At present, my country is paying more attention to the development of hydropower in the case of a large demand for electricity. Hydropower energy is used to replace emission reduction as a development goal. Hydropower generation uses the potential energy of the river at a high place to flow to a low place, converting the potential energy contained in it into the kinetic energy of the turbine. With the help of the turbine as the original power, the speed of the turbine and the generator are matched through the speed control device to drive the generator to generate electricity and realize power generation. It has the advantages of not using fuel and not polluting the environment. It effectively utilizes water resources and can contribute to energy transformation and sustainable development. However, traditional hydropower generation systems usually rely on large reservoirs or dams, using water accumulation to form high water levels, and then releasing water to drive turbines to generate electricity. This system has high construction and operation costs. At the same time, the power generation of power generation equipment depends entirely on the flow rate of the water. However, in some parts of my country, there are many water resources with slow flow rates, small flows, and small drops. These water resources are difficult to use due to their dispersion. It will consume a lot of financial, material and human resources to generate electricity through high water levels, and the construction period is long. In addition, most of the actual turbines on the market currently use bearing gear linkage, and the friction between gears will reduce the power generation efficiency.

[0003] Therefore, there is a need for a permanent magnetic levitation hydropower generation system suitable for small-drop natural water flow conditions, which will be conducive to the electrification of areas with densely distributed streams in my country, improve people's lives, accelerate rural revitalization, and promote the development of industrial and agricultural productivity. Utility Model Content

[0004] In order to solve the defects and shortcomings in the above-mentioned prior art, the utility model provides a hydroelectric power generation system using small-drop natural distributed water flow as energy, realizes distributed power generation through the layout of small hydro-turbine generator sets and automatic sensing and regulation of water flow, makes full use of water flow energy, reduces the friction of turbine and generator system through permanent magnetic bearings, improves power generation efficiency, converts the kinetic energy of water flow into electrical energy, and realizes networked combined power generation through distributedly arranged turbines and generators. It has the characteristics of high efficiency and sustainability, is suitable for the distributed power generation needs under small-drop water flow conditions, is suitable for rural revitalization, and promotes rural electrical development. Small-drop natural water flow multi-point distributed power generation system.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a small-drop natural water flow multi-point distributed power generation system, including distributed self-feedback water valves, permanent magnetic bearing turbines, permanent magnetic generators, self-feedback control systems and power storage systems.

[0006] The self-feedback water valve is used to guide the water flow to the turbine position and control the flow rate and flow size of the water flowing into the turbine;

[0007] The permanent magnetic bearing turbine is the core device of the hydroelectric power generation system, which is distributed in the small drop water flow path and the river bend area to convert the kinetic energy of the water flow into mechanical energy;

[0008] The permanent magnet generator is connected to the permanent magnet bearing turbine, and generates mechanical energy through the rotation of the blades of the permanent magnet bearing turbine, and converts the mechanical energy into electrical energy; the output electrical energy of the permanent magnet generator is boosted by the transformer and then transmitted to the power grid or supplied to other power equipment for use;

[0009] The self-feedback control system is used to monitor the operating status of the turbine and generator and adjust the water flow and flow velocity to ensure stable operation of the system and optimal power generation effect;

[0010] The power storage system is used to collect and store the electric energy generated by the permanent magnet generator or transmit it to a place where it is needed.

[0011] Preferably, the permanent magnet bearing turbine, permanent magnet generator and auxiliary devices form a unit system and are distributed and arranged, and multiple generators are driven to generate electricity simultaneously through artificially created water flow drop, natural water flow drop and water flow in turbulent areas, and the generated electricity is transmitted to the output point system.

[0012] Preferably, the auxiliary device includes a turbine cooling system, a turbine lubrication system and a turbine speed regulating device, which are used to ensure the safe operation and efficient power generation of the power generation system.

[0013] Preferably, the permanent magnetic bearing turbine consists of a runner and blades, which are connected by permanent magnetic bearings. When water flows through the blades, the blades are acted upon by the force of the water flow, driving the runner to rotate.

[0014] Preferably, the self-feedback control system includes sensors, automatic adjustment devices and a monitoring system, and the power storage system includes a transformer, a power storage station, a transmission line and a distribution equipment.

[0015] Preferably, when the power generation system is used in an area with gentle water flow, water flow information data analysis and detection is performed on the water area. The water flow information includes inflow velocity, water flow velocity mutation rate and water level. The water level difference is artificially constructed and a stepped permanent magnet hydro-turbine generator set is installed to convert water kinetic energy into mechanical energy, and then generate electricity through the power generation system.

[0016] Preferably, the power generation system is used in turbulent river areas, including river corners, water fall areas, and areas with large terrain undulations. Water flow information data analysis and detection is performed on the water area. The water flow information includes inflow velocity, water flow velocity mutation rate and water level. Gates and water conduits are installed in turbulent areas. The water conduits are connected to vertical hydro-turbine generator sets. The size of the gate channel is automatically adjusted according to the water flow velocity and the matching degree of the turbine and generator speed through a self-feedback system. The flow velocity and flow are adjusted by changing the size of the gate opening according to actual conditions to ensure the normal operation of the unit system, and ensure the stable operation of the system and the best power generation effect.

[0017] Preferably, the power generation system is used to connect permanent magnet generator sets in all water areas through retractable connecting lines. The permanent magnet generators are externally connected to the permanent magnet bearing turbines in a matrix arrangement and assembled into a power generation structure through a modular structure, which can be flexibly adjusted according to different capacities and different needs.

[0018] Preferably, the power generation system can also establish a power storage station in the water area. The permanent magnet generator set generates current and connects to the power storage station. The current transmitted by the permanent magnet generator set is stabilized and transformed through the power storage station. The power storage station is connected to the circuit power supply and transmitted to the user to start powering on. The power storage station is equipped with charging piles and portable power storage boxes.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. High power generation efficiency: It utilizes the kinetic energy of small-drop water flow and the use of devices to generate electricity, making full use of renewable resources, reducing friction loss, and having a high energy conversion efficiency.

[0021] 2. Distributed layout: Through the distributed layout of turbines, decentralized power generation can be achieved and the small-drop water flow resources can be fully utilized.

[0022] 3. Sustainability: Hydropower is a renewable energy source that does not produce harmful gases such as carbon dioxide and is environmentally friendly. It does not require river damming and does not change the ecological environment, while beautifying rural construction.

[0023] 4. Economical: Compared with the traditional dam reservoir type hydropower generation system, the system construction and operation and maintenance costs of the present invention are lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a schematic diagram of the arrangement of the water turbine power generation device of the utility model in different water areas.

[0025] Figure 2 This is a schematic diagram of the layout of the hydro-turbine power generation device in areas Ⅰ and Ⅱ of the utility model.

[0026] Figure 3This is a schematic diagram of the layout structure of the hydro-turbine power generation device in area I of the utility model.

[0027] Figure 4 This is a schematic diagram of the layout structure of the hydro-turbine power generation device in area II of the utility model.

[0028] Arrows indicate the direction of water flow.

[0029] Explanation of the accompanying drawings: 1-step variable speed permanent magnet generator set, 2-step high potential energy water turbine set based on step difference, 3-self-feedback water valve, 4-self-feedback control system, 5-vertical permanent magnet water turbine generator set, 6-staggered high power water turbine permanent magnet generator set, 7-vertical variable speed permanent magnet generator, 8-small step distributed permanent magnet water turbine, 9-small step distributed permanent magnet generator, 10-self-feedback movable shaft, 11-self-feedback baffle, 12-vertical variable speed permanent magnet water turbine. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the drawings in the embodiments. The utility model can also be applied through other different specific implementations, and is not limited to the described implementations. The purpose of providing these implementations is to make the disclosure of the utility model more clearly understood.

[0031] like Figure 1-4 As shown, a small-drop natural water flow multi-point distributed power generation system includes a distributed stepped variable-speed permanent magnet generator set 1, a stepped high-potential energy water turbine set 2 based on the drop, a self-feedback water valve 3, a self-feedback control system 4, a vertical permanent magnet water turbine generator set 5, a staggered high-power water turbine permanent magnet generator set 6, a vertical variable-speed permanent magnet generator 7, a small stepped distributed permanent magnet water turbine 8, a small stepped distributed permanent magnet generator 9, a self-feedback movable shaft 10, a self-feedback baffle 11, and a vertical variable-speed permanent magnet water turbine 12. Example 1

[0032] Figure 1-3 The middle area I is a river channel with a small drop. The water flows through the artificial small-scale stepped distributed permanent magnet turbine 8 to drive the internal blades to rotate. The small-scale stepped distributed permanent magnet turbine 8 is externally connected to a small-scale stepped distributed permanent magnet generator 9 to convert water energy into mechanical energy. The small-scale stepped distributed permanent magnet generator 9 is connected to the power storage station through a connecting line to generate electricity. Example 2

[0033] Figure 1 , 2In the second region of the second region, the water flow information data analysis and detection is performed on the water area through the self-feedback control system 4. When the water flow velocity and flow rate in the second region are low, the self-feedback system controls the self-feedback movable shaft 10 to be locked, and closes the self-feedback baffle 11. The water flows into the vertical permanent magnet turbine 12 through the designated opening, driving the internal blades to rotate. The vertical permanent magnet turbine 12 is connected to the vertical variable speed permanent magnet generator 7, converting the water energy into mechanical energy to generate current, and connecting to the power storage station for power generation; when the water flow velocity and flow rate in the second region are large, the self-feedback system controls the self-feedback movable shaft 10 to be unlocked, forming an "S"-shaped structure, and at the same time controls the self-feedback baffle 11 to be opened according to the actual situation, and the water flow can flow out through the closed part of the original self-feedback baffle 11, and a proper amount of water flows into the vertical permanent magnet turbine 12 through the designated opening, driving the internal blades to rotate. The vertical permanent magnet turbine 12 is connected to the vertical variable speed permanent magnet generator 7, converting the water energy into mechanical energy to generate current, and connecting to the power storage station for power generation; Example 3

[0034] Figure 1 The middle III area is an area where water flows freely and the terrain is undulating. The water flows through the staggered high-power water wheel permanent magnet generator set built on the slope, and generates electricity and supplies electricity based on the same principle as in Example 1.

[0035] Among them, embodiment 1 and embodiment 3 do not need to control the water flow speed and flow rate, and the power supply is implemented uninterruptedly, and embodiment 2 needs to cooperate with the self-feedback system for real-time monitoring. However, based on different practical applications, embodiment 1 and embodiment 2 can also be connected to the self-feedback system to control the power supply size by controlling whether the turbine blades rotate. In the absence of conflict, the features in the above embodiments and embodiments can be combined with each other.

[0036] The utility model provides a hydroelectric power generation system and method suitable for naturally distributed water flow conditions with small drop, which utilizes the kinetic energy of water flow to convert into electrical energy. The system has the characteristics of high efficiency and sustainability, and is suitable for distributed power generation and full utilization of small drop water flow energy. The hydroelectric power generation system of the utility model is expected to play an important role in areas with rich small drop water flow resources and contribute to sustainable development.

[0037] The above embodiments are only used to illustrate the specific implementation scheme of the present utility model, but the protection scope of the present utility model is not limited thereto. Technical personnel familiar with the field can modify the technical solutions recorded in the above embodiments with reference to the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should all be included in the scope of the claims and description of the present utility model.

Claims

1. A small-drop natural water flow multi-point distributed power generation system, characterized by: It includes distributed self-feedback water valves, permanent magnet bearing turbines, permanent magnet generators, self-feedback control systems and power storage systems. The self-feedback water valve is used to guide the water flow to the turbine position and control the flow rate and flow size of the water flowing into the turbine; The permanent magnetic bearing turbine is the core device of the hydroelectric power generation system, which is distributed in the small drop water flow path and the river bend area to convert the kinetic energy of the water flow into mechanical energy; The permanent magnet generator is connected to the permanent magnet bearing turbine, and the blades of the permanent magnet bearing turbine rotate to generate mechanical energy, which is converted into electrical energy; the electrical energy output by the permanent magnet generator is boosted by a transformer and then transmitted to the power grid or supplied to power equipment for use; The self-feedback control system is used to monitor the operating status of the turbine and generator and adjust the water flow and flow velocity to ensure stable operation of the system and optimal power generation effect; The power storage system is used to collect and store the electric energy generated by the permanent magnet generator or transmit it to a place where it is needed; The permanent magnetic bearing turbine, permanent magnetic generator and auxiliary devices form a unit system and are distributed and arranged. The multiple generators are driven to generate electricity simultaneously by artificially creating water flow drop, natural water flow drop and water flow in turbulent areas, and the generated electricity is transmitted to the output point system; The auxiliary devices include a turbine cooling system, a turbine lubrication system and a turbine speed regulating device, which are used to ensure the safe operation and efficient power generation of the power generation system; The self-feedback control system includes sensors, automatic adjustment devices and monitoring systems, and the power storage system includes transformers, power storage stations, transmission lines and distribution equipment.

2. According to claim 1, a small-fall natural water flow multi-point distributed power generation system is characterized by: The permanent magnetic bearing turbine consists of a runner and blades, which are connected by a permanent magnetic bearing. When water flows through the blades, the blades are acted upon by the water flow, driving the runner to rotate.

3. The small-fall natural water flow multi-point distributed power generation system according to claim 1, characterized in that: When the power generation system is used in areas with slow water flow, it will conduct water flow information data analysis and detection on the water area. The water flow information includes inflow velocity, water flow velocity mutation rate and water level. The water level difference is artificially constructed and a stepped permanent magnet hydro-turbine generator set is installed to convert the kinetic energy of the water into mechanical energy, and then generate electricity through the power generation system.

4. The small-fall natural water flow multi-point distributed power generation system according to claim 1, characterized in that: The power generation system is used in turbulent areas of the river, including river corners, water fall areas, and large areas with undulating terrain. The water flow information data analysis and detection is carried out in the water area. The water flow information includes inflow velocity, water flow velocity mutation rate and water level. Gates and water guide pipes are installed in turbulent areas. The water guide pipes are connected to the vertical turbine generator set. The self-feedback system automatically adjusts the size of the gate channel according to the water flow velocity and the matching degree of the turbine and generator speed. The gate opening size is changed according to the actual situation to adjust the flow rate and flow rate, ensure the normal operation of the unit system, and ensure the stable operation of the system and the best power generation effect.

5. The small-fall natural water flow multi-point distributed power generation system according to claim 1 is characterized by: The power generation system is used to connect permanent magnet generator sets in all water areas through retractable connecting lines. The permanent magnet generators are externally connected to the permanent magnet bearing turbines in a matrix arrangement and assembled into a power generation structure through a modular structure, which can be flexibly adjusted according to different capacities and different needs.

6. The small-fall natural water flow multi-point distributed power generation system according to claim 1, characterized in that: The power generation system can also establish a power storage station in the water area. The permanent magnet generator set generates current and connects to the power storage station. The current transmitted by the permanent magnet generator set is stabilized and transformed through the power storage station. The power storage station is connected to the circuit power supply and transmitted to the user to start powering the power. The power storage station is equipped with charging piles and portable power storage boxes.

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