Closed high-pressure circulating type energy-saving and water-saving hydroelectric generation system and method

Abstract

The system comprises at least one submersible pump, the submersible pump is connected with a vacuum pressure tank through a water conveying pipe, the pressure tank is provided with a plurality of water outlets, the water outlets are connected with a plurality of high-pressure water pipe sprayers, the sprayers face a plurality of water turbines, and the water turbines are sealed in a box body. A water return pipe is arranged at the lower bottom of the box; each water turbine is connected with a counterweight wheel and then connected with a generator through a coupler. The submersible pump pumps water, and the water pipe conveys water into the vacuum pressure tank; the water level in the pressure tank rises to form the required strong water pressure, and the high-pressure water pipe valve is opened when the set pressure is reached; the high-pressure water flow jetted by the high-pressure water flow impacts the water turbine to push the water turbine to operate and drive a generator outside the closed water turbine to generate electricity. The construction of the system is not limited by landforms, the investment is small, the effect is quick, and the return rate is high.

Description

Technical Field

[0001] The present invention relates to the technical field of hydroelectric power generation systems, and in particular to a closed high-pressure circulation type energy-saving and water-saving hydroelectric power generation system and method. Background Art

[0002] As a renewable resource, hydropower has significant advantages. Compared with wind and solar energy, water resources are relatively stable and can provide relatively stable and continuous power output. It does not produce greenhouse gases and other pollutants during the power generation process, which is environmentally friendly. The operation and maintenance costs are relatively low. However, the existing hydropower generation system also has some disadvantages and challenges, such as the following aspects.

[0003] 1. High initial investment cost. It is necessary to build dams, water diversion channels, plant buildings and other infrastructure. The investment in infrastructure construction is large, which increases the initial investment and has a long investment payback period; 2. Existing hydropower generation relies on a stable water source and a certain water flow drop. It is suitable for limited geographical locations and requires specific terrain conditions (such as mountainous or hilly areas) to achieve effective water energy conversion; 3. The construction of dams and water diversion channels may damage the local ecosystem and affect the survival of fish and other aquatic organisms; it also requires the occupation of certain land resources, which may affect the lives of local residents and agricultural production; 4. The construction of a hydroelectric power station requires approval from multiple departments and the procedures are complicated. In some regions, policy support for small-scale hydropower generation is insufficient, which has affected its development. Summary of the invention

[0004] The purpose of the present invention is to provide a closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system and method, which drives the counterweight wheel and the water wheel to rotate through high-pressure energy to drive the generator to generate electricity. The construction site does not need to consider the topographic conditions, and can be built in places with space such as sewage treatment plants, without occupying arable land, saving land. To achieve the above purpose, the present invention provides the following technical solutions: A closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system includes at least one submersible pump, which is connected to a vacuum pressure tank through a water pipe. The pressure tank is provided with multiple water outlets, which are connected to multiple high-pressure water pipe nozzles. The water pipe nozzles are directed toward multiple turbines. The turbines are sealed in a box body, and a return pipe is provided on the box body. Each turbine is connected to a generator through a coupling.

[0005] The turbine is sealed in the box, which can reduce water loss and facilitate water recycling.

[0006] The submersible pump is arranged in the water collection circulation pool; the return pipe is connected to the water collection circulation pool. The water sprayed by the water pipe nozzle drives the water turbine to generate electricity and then returns to the circulation water pool through the return pipe at the bottom of the box body. The water can be recycled and reused, saving water resources.

[0007] Two high-pressure water pipe nozzles correspond to one turbine. The nozzles of the water pipe nozzles are directed toward the baffle blades at the lower middle of the turbine. The nozzles of the high-pressure water pipes are directed toward this position so that the turbine can be driven to rotate more easily.

[0008] The rotating shafts on both sides of the water turbine are respectively provided with counterweight wheels which are then connected to a generator via a coupling. The counterweight wheels are connected to the shaft of the water turbine via a coupling. The counterweight wheels and the generator are both arranged outside the casing.

[0009] The return water pipe is arranged at the bottom of the box body, and a return water generator set is arranged on the return water pipe. By arranging the return water generator set on the return water pipe, when the circulating water returns to the water collection circulation pool, it can generate electricity again, thereby increasing the reuse of water and improving the power generation.

[0010] The water delivery pipe and the water return pipe are both provided with filter screens which can filter out impurities in the water.

[0011] The water outlet is arranged at the middle bottom of the pressure tank, and a valve switch is arranged on the water outlet. The valve switch is used to control the high-pressure water pipe nozzle, and the valve switch is opened under the set pressure to increase the impact force, thereby improving the power generation efficiency of the turbine.

[0012] The sum of the power of the generator is greater than the sum of the power of all the submersible pumps. In the same time, the system generates more electricity than it consumes, thus ensuring the economic benefits of power generation.

[0013] The power generation method using the closed high-pressure circulation energy-saving and water-saving hydropower generation system comprises: Step 1: The submersible pump pumps water and delivers the water into the vacuum pressure tank through the water pipe; Step 2: The water level in the pressure tank rises, and the upper air is squeezed to form a strong pressure. When the set pressure is reached, the high-pressure water pipe nozzle is opened; Step 3: The water flow sprayed from the high-pressure water pipe nozzle impacts the turbine to drive the turbine to operate; Step 4: The turbine rotates to drive the generator to generate electricity.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention utilizes the impact force of the high-pressure water pipe nozzle to drive the water turbine to rotate, and the rotation of the water turbine drives the generator to generate electricity. It does not need to build basic projects such as dams and water diversion channels, with low initial investment and quick results.

[0015] 2. The overall equipment of the present invention is simple, and there is no need to consider the terrain conditions. It can be built in sewage treatment plants, steel mills, chemical plants and other enterprises and factories, 24-hour electricity-using enterprises, residential areas, communities and other places with space, and it is suitable for military defense. It has broad prospects, does not occupy arable land, saves land, benefits the country and the people, and has loose implementation space. It only needs to reach a land lease agreement with the owner of the vacant land, and the two parties sign a power supply contract, adopt an investment method of self-generation and self-use, and the surplus electricity is not connected to the Internet. In principle, the functional department is put on record, and the construction can be started, and the declaration is simple and convenient.

[0016] 3. The present invention does not have high requirements on water quality. The closed high-pressure circulation energy-saving and water-saving method can utilize the wastewater generated by various enterprises for power generation. After purification, the present invention patent can be used to save water resources.

[0017] 4. The turbine of the present invention is sealed in the casing, and the water consumption is slow. The water returns to the water collection circulation pool through the return pipe, and the closed circulation does not damage the ecological environment and does not damage the vegetation to cause new soil and water loss.

[0018] 5. The water flow of the invention is not restricted by seasons, and the operation and power generation time is ample, which can be operated for about 8,000 hours a year. The power consumption of pumping is lower than the power generation of the generator set, with high output efficiency, small investment and high efficiency. It is a good invention that benefits the country and the people. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a system schematic diagram of the present invention; Among them, 1. water collection circulation pool, 2. submersible pump, 3. pressure tank, 4. water outlet, 5. water pipe nozzle, 6. turbine, 7. box, 8. return pipe, 9. counterweight wheel, 10. generator, 11. drain outlet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the implementation cases of the present invention to clearly and completely describe the technical solutions in the implementation cases of the present invention. Obviously, the described embodiments are only part of the implementation cases of the present invention, not all of the implementation cases. Based on the implementation cases in the present invention, all other implementation cases obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figure 1As shown, the present invention provides a closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system, including a submersible pump 2, the submersible pump 2 is connected to a vacuum pressure tank 3 through a water pipe, the pressure tank 3 is provided with a plurality of water outlets 4, the water outlets 4 are connected to a plurality of high-pressure water pipe nozzles 5, the water pipe nozzles 5 face a plurality of water turbines 9, the water turbines 6 are sealed in a box 7, and a return pipe 8 is provided on the box 7; each of the water turbines 6 is connected to a generator 10 through a coupling, and the generator 10 is arranged outside the box 7. A drain port 11 is provided at the bottom of the pressure tank 3 to drain water as needed.

[0022] The rotating shafts on both sides of the turbine are respectively provided with counterweight wheels 9 which are then connected to a generator 10 via a coupling. The counterweight wheels are connected to the shaft of the turbine via a coupling, and the counterweight wheels and the generator are both arranged outside the casing. The counterweight wheels 9 can play a role of dynamic balancing, improve the efficiency of power generation, and are used to store and release energy to adjust the speed of the turbine, adapt to hydraulic changes, and ensure that the generator outputs stable electrical energy. The rotation of the counterweight wheel increases the inertia, which helps to reduce the fluctuation of the turbine speed, keep the speed stable, and thus improve the quality of the electrical energy output by the generator. The counterweight wheel can help the turbine respond quickly to load changes and adjust the output power.

[0023] The turbine is sealed in the box 7, which can reduce water consumption and facilitate water recycling. The same amount of water is used for reciprocating circulation, with very little loss. When the machine runs for ten days or half a month, a small amount of water is added according to the water consumption. When it does exceed the water suction position of the submersible pump, part of the water can be added. The power generation system provided by the present invention is energy-saving, water-saving, and zero-emission, which is a good invention that benefits the country and the people.

[0024] The submersible pump 2 is arranged in the water collection circulation pool 1; the return pipe is connected to the water collection circulation pool 1. The used water returns to the water collection circulation pool 1, and the water can be recycled to save water resources. In order to ensure the uninterrupted operation of the equipment, the submersible pump 2 is provided with two sets, one for use and one for backup, to ensure 24-hour operation.

[0025] Each turbine is equipped with two high-pressure water pipe nozzles, which drive a turbine to rotate. The two nozzles are facing the same blade of the turbine and are symmetrically arranged, which can keep the high-pressure water pipe nozzles impacting the blades symmetrically and maintain the balance of the turbine.

[0026] The nozzle of the high-pressure water pipe is directed toward the blades at the lower middle of the turbine. When the nozzle of the high-pressure water pipe is directed toward this position, it is easier to drive the turbine to rotate and increase the speed of the water wheel. The higher the speed of the water wheel, the greater the centrifugal force.

[0027] The return pipe is provided with a return water generator set 11, and the return water generator set may not be provided according to actual needs. By providing the generator set on the return pipe, water reuse can be increased and the amount of power generated can be improved. As required, a valve may also be provided on the return pipe.

[0028] The water delivery pipe and the water return pipe are provided with filter screens which can filter out impurities in the water and purify the water quality.

[0029] The water outlet is arranged at the middle bottom of the pressure tank, and a valve switch is arranged on the water outlet. The valve switch is used to control when to open the high-pressure water pipe nozzle. When the water pipe nozzle is opened at a set pressure, the pressure is large enough, the impact force of the water is greater, and the power generation efficiency of the turbine can be improved.

[0030] In practical applications, the water collection circulation pool 1 can be a movable pool or a downwardly dug pool, with a capacity ranging from 10 cubic meters to 10,000 cubic meters, a water pipe diameter ranging from 10 mm to 2 meters, and a generator set ranging from 10 kilowatts to 10 megawatts. The corresponding equipment parameters can be set according to actual needs.

[0031] The power generation method using the closed high-pressure circulation energy-saving and water-saving hydropower generation system comprises: Step 1: pump water using a submersible pump 2 and transport the water to a vacuum pressure tank 3 through a water pipe; Step 2: the water level in the pressure tank 3 rises, the upper air is squeezed, and when the set pressure is reached, the high-pressure water gun 5 is turned on; Step 3: The water flow sprayed from the high-pressure water pipe nozzle impacts the turbine 6, driving the turbine 6 to operate; Step 4: drive the generator 10 outside the closed turbine 6 to generate electricity, and the generated electric energy is processed and reused according to needs.

[0032] In the present invention, the sum of the powers of all the generators is greater than the sum of the powers of all the submersible pumps. In the same time, the system generates more electricity than the consumed electricity, which can ensure the economic benefits of power generation. In this embodiment, two submersible pumps 2 are provided, one for use and one for standby. The head of the submersible pump 2 is 150 meters, the power is 25 kilowatts, and two turbines are provided. Both sides of each turbine are connected to the generator through a coupling. The rated power of the generator is 10 kilowatts, the rated voltage is 380 volts, and the rated frequency is 50Hz. The submersible pump consumes 20 degrees of electricity when working for one hour, and the four generators can generate 40 degrees of electricity in total. The consumed electricity is less than the generated electricity. It has also been verified through experiments that the use of this set of inventions can indeed achieve the effect of generating 2 degrees of electricity from 1 degree of electricity. The present invention drives the water wheel to rotate through high-pressure energy, accelerates the rotation of the counterweight wheel, realizes energy conversion, and achieves efficient power generation results.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Closed high-pressure circulation energy-saving and water-saving hydropower generation system, characterized by: It comprises at least one submersible pump, which is connected to a vacuum pressure tank through a water pipe. The pressure tank is provided with a plurality of water outlets, which are connected to a plurality of high-pressure water pipe nozzles. The water pipe nozzles face a plurality of water turbines, which are sealed in a box body, and a return pipe is provided on the box body. Each water turbine is connected to a generator through a coupling.

2. The closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system according to claim 1 is characterized in that: The submersible pump is placed in a water collection circulation pool; the return pipe is connected to the water collection circulation pool.

3. The closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system according to claim 1 is characterized in that: Two of the water pipe nozzles correspond to one water turbine.

4. The closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system according to any one of claims 1 to 3, characterized in that: The nozzle of the water pipe nozzle is directed toward the baffle blades at the lower middle part of the turbine.

5. The closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system according to claim 1 is characterized in that: The rotating shafts on both sides of the water turbine are respectively provided with counterweight wheels which are then connected to a generator via a coupling. The counterweight wheels are connected to the shaft of the water turbine via a coupling. The counterweight wheels and the generator are both arranged outside the casing.

6. The closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system as claimed in claim 5 is characterized in that: The water return pipe is arranged at the lower bottom of the box body, and a water return generator set is arranged on the water return pipe.

7. The closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system as claimed in claim 5 is characterized in that: The water delivery pipe and the water return pipe are both provided with filter screens.

8. The closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system according to claim 1 is characterized in that: The water outlet is arranged at the middle bottom of the pressure tank, and a valve switch is arranged on the water outlet.

9. The closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system according to claim 1 is characterized in that: The sum of the powers of all the generators is greater than the sum of the powers of all the submersible pumps.

10. A method for generating electricity using the closed high-pressure circulation energy-saving and water-saving hydroelectric power generation system according to claim 1, characterized in that: include: Step 1: The submersible pump pumps water and delivers the water to the vacuum pressure tank through the water pipe; Step 2: The water level in the pressure tank rises, the upper air is squeezed to form pressure, and the water pipe nozzle is opened when the set pressure is reached; Step 3: The water flow sprayed from the high-pressure water pipe nozzle impacts the turbine to drive the turbine to operate; Step 4: The turbine rotates to drive the generator to generate electricity.

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