CN112128043A - Water circulation power generation equipment and supercharging power generation device thereof - Google Patents
Water circulation power generation equipment and supercharging power generation device thereof Download PDFInfo
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- CN112128043A CN112128043A CN202011030223.4A CN202011030223A CN112128043A CN 112128043 A CN112128043 A CN 112128043A CN 202011030223 A CN202011030223 A CN 202011030223A CN 112128043 A CN112128043 A CN 112128043A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F7/00—Pumps displacing fluids by using inertia thereof, e.g. by generating vibrations therein
- F04F7/02—Hydraulic rams
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a water circulation power generation device and a supercharging power generation device thereof, which comprise a first water tank, a second water tank, a first water storage tower and a second water storage tower, wherein a first water hammer pump for introducing water from a flowing water source into the second water tank is arranged between the second water tank and the flowing water source, a second water hammer pump for introducing water from the second water tank into the first water tank is arranged between the first water tank and the second water tank, the first water tank is connected with a water inlet of the first water storage tower through a water pipe, the side wall of the first water storage tower is provided with a water outlet, the water outlet is connected with a water inlet of the second water storage tower through a water pipe, the drainage of the water outlets of the first water storage tower and the second water storage tower is discharged into the second water tank after passing through a water turbine, and the first water storage tower and the second water storage tower are both provided with a suspension pressure gauge. The invention provides a pressurizing power generation device which can apply pressure downwards to water, improve impact water pressure and further improve power generation efficiency, and realize more energy-saving and environment-friendly hydroelectric power generation through water circulation power generation equipment.
Description
Technical Field
The invention belongs to the technical field of hydroelectric power generation equipment, and particularly relates to water circulation power generation equipment and a supercharging power generation device thereof.
Background
Electric power is a national developing life line, particularly clean hydroelectric power. The manufacturing and application of hydroelectric power generation in China reach the advanced level of the world, the whole industry is developed vigorously and full of vitality, and the economic benefit is increased remarkably. The hydroelectric generation is basically divided into three categories of dam type, water diversion type and hybrid type by the prior art, but the dam needs to be built, so the construction period is long, the capital investment is large, and the ecological environment is damaged to a certain extent.
The water is a heavy substance and has the characteristic of fluidity, so that under the condition that the water level has a fall, the water can form a certain pressure to generate a certain power to push the water turbine to generate electricity. The traditional hydraulic power generation equipment adopts the principle of inclined tube type flowing water, namely, a pressure tunnel and a pressure water conduit with downward inclined angles are adopted to convey the flowing water with strong pressure to a power station from a reservoir or a dam, and certain flow velocity power is formed by utilizing the flow velocity generated by the flowing water.
Disclosure of Invention
The invention aims to provide a pressurizing power generation device which is simple in structure and convenient to install, can be used for applying pressure to water downwards, improving impact water pressure and further improving power generation efficiency, and realizes more energy-saving and environment-friendly hydroelectric power generation through water circulation power generation equipment.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a pressure boost power generation facility, includes the retaining tower and sets up the suspension pressure gauge in the retaining tower, the top of retaining tower is provided with the water inlet, the retaining tower has at least one to set up in the outlet of its bottom, sets up the outlet in retaining tower bottom and is provided with main control valve and connects the drain pipe on main control valve, the water outlet end of drain pipe is provided with the high-pressure injector head that is used for assaulting the hydraulic turbine, the hydraulic turbine is connected with the generator transmission, the inflow and the water yield keep balance of retaining tower.
By adopting the scheme, the water source is injected into the water storage tower firstly, according to the principle that an object is suspended in water and the water buoyancy force is generated, the volume of the suspension pressure gauge is large, the nuclear load capacity of the suspension pressure gauge is large, the water source is continuously injected, the suspension pressure gauge floats upwards in the water storage tower, when the suspension pressure gauge is abutted against the top of the water storage tower, the top of the water storage tower can limit the suspension pressure gauge, the suspension pressure gauge can be gradually immersed in the water, it needs to be noted that the suspension pressure gauge is partially immersed in the water, a certain reserved space needs to be reserved in the water storage tower, the aim is to downwards apply pressure to the water in the water storage tower by the nuclear load capacity pressure of the suspension pressure gauge so that the water in the water storage tower generates downward pressure, according to the principle that the pressure has power, the main control valve at the bottom of the water storage tower is opened, and the impact water pressure at the water, the rotating speed of the water turbine is accelerated, and the power generation efficiency is improved.
As a further provision of the invention, the water storage tower is provided with an abutment against the suspension forcer, the maximum immersed volume of the suspension forcer being not more than 90% of the overall volume of the suspension forcer.
Adopt above-mentioned scheme, butt portion and suspension pressure gauge butt through the water storage tower to this reaches the purpose that makes more submergence of suspension pressure gauge in aquatic, and suspension pressure gauge displacement is more, and its pressure of exerting downwards is big more, and the pressure of constantly increasing downwards exerting can provide bigger impact water pressure.
As a further arrangement of the invention, the side wall of the water storage tower is provided with a water outlet, and the water outlet is correspondingly arranged at the liquid level height when the immersion volume of the suspension pressure gauge is 90%.
By adopting the scheme, the water outlet is arranged on the side wall of the water storage tower, and the water outlet is correspondingly arranged at the liquid level height position when the immersion volume of the suspension pressure gauge is 90%, so that the immersion volume of the suspension pressure gauge can be kept stable at 90%, and the best pressurization effect can be ensured.
As a further arrangement of the invention, the suspension pressure gauge is an air suspension pressure gauge, and the air suspension pressure gauge is provided with a closed cavity for storing air.
By adopting the scheme, the structure is simple, and the processing and implementation are convenient.
As a further arrangement of the invention, the drain is a high pressure hose.
By adopting the scheme, the water pump can bear larger water pressure, the service life of a product is prolonged, and the stability of the water pressure is kept.
As a further arrangement of the invention, the water outlet is arranged at the center of the bottom of the water storage tower.
Adopt above-mentioned scheme, set up the outlet in the bottom central authorities of retaining tower, because the bottom of retaining tower is conical usually, conical bottom central authorities atress is even, and the water pressure that receives is the biggest, consequently sets up the outlet in the bottom central authorities of retaining tower and plays certain pressure boost effect, further increases the impact water pressure in outlet, improves the generating efficiency.
The utility model provides a hydrologic cycle power generation facility includes two kinds of foretell pressure boost power generation facility at least, includes first pond, second pond, first retaining tower and second retaining tower, water liquid height in the first pond is higher than the water liquid height in the second pond, be provided with the first hydraulic ram pump in introducing the second pond with water by the water source that flows between second pond and the mobile water source, be provided with the second hydraulic ram pump in introducing the first pond with water by the second pond between first pond and the second pond, first pond passes through the water pipe and is connected with first retaining tower water inlet, the lateral wall of first retaining tower is provided with the delivery port, the delivery port leads to pipe and is connected with the water inlet of second retaining tower, the drainage in first retaining tower and second retaining tower outlet is discharged into in the second pond behind the hydraulic turbine.
Adopt above-mentioned scheme, earlier send into the second pond by the water source in proper order under first hydraulic ram pump and second hydraulic ram pump's effect with water, first pond, then supply water in to first retaining tower through first pond, because first retaining tower can form under the effect that self possesses the suspension pressure ware and strike water pressure, with strike the hydraulic turbine electricity generation better, and the delivery port of first retaining tower lateral wall can be used as and supply water in to second retaining tower, the second retaining tower and then also form and strike water pressure under the effect that self possesses the suspension pressure ware, strike the hydraulic turbine electricity generation, and the water that strikes the hydraulic turbine electricity generation still discharges into the second pond, the water in second pond gets back to first pond again under the effect of second hydraulic ram pump, thereby reach hydrologic cycle's purpose.
In a further aspect of the present invention, the first hydraulic ram pumps send water into the second water tank through a hard water pipe inclined upward at an angle of 15 degrees, and the second hydraulic ram pumps send water into the first water tank through a hard water pipe inclined upward at an angle of 15 degrees.
By adopting the scheme, the water hammer pump takes running water as power, generates a water hammer effect through mechanical action, converts low water head energy into an advanced water lifting device with high water head energy, and can ensure the circulation of water supply by utilizing the water hammer pump, thereby being more energy-saving and environment-friendly. In order to better play the effect of a water hammer pump and ensure that water can be sent into the first water tank and the second water tank, the water in the water source is conveyed to the second water tank at the upper part along the hard water pipe with the inclination angle of 15 degrees, and the water in the second water tank is sent into the first water tank along the hard water pipe with the inclination angle of 15 degrees.
As a further arrangement of the present invention, a flow guide surface is formed in the second water pool in an inclined arrangement, the second hydraulic ram is arranged at the downstream of the flow guide surface, and the hydraulic turbine is arranged at the upstream of the flow guide surface.
By adopting the scheme, the impact power for impacting the second hydraulic ram pump can be formed through the flow guide surface, the water supply capacity of the second hydraulic ram pump is better exerted, and the purposes of energy conservation and environmental protection are further achieved.
The invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a supercharged power generation device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the embodiment of the invention in which the floating pressure device is indirectly abutted against the top of the impoundment tower;
FIG. 3 is a schematic structural view of the embodiment of the invention in which the floating pressure device is directly abutted against the top of the impoundment tower;
FIG. 4 is a schematic structural diagram of a levitation pressure apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a water circulation power generation plant according to an embodiment of the present invention;
fig. 6 is a schematic view of the supercharging principle of the supercharging power generation device in the embodiment of the invention.
Detailed Description
Detailed description of the inventionas shown in fig. 1 to 4, a supercharged power generating device comprises a water storage tower 1 and a suspension pressure device 2 arranged inside the water storage tower 1, the suspension pressure device 2 is an air suspension pressure device which is provided with a closed cavity 21 for storing air, the top of the water storage tower 1 is provided with a water inlet 12, the water inlet 12 is arranged in the center of the top of the water storage tower 1, the water storage tower 1 is provided with at least one water outlet 13 arranged at the center of the bottom thereof, the water outlet 13 arranged at the bottom of the water storage tower 1 is provided with a main control valve 14 and a water outlet pipe 15 connected with the main control valve 14, the water outlet pipe 15 is a high-pressure hose, the water outlet end of the water outlet pipe 15 is provided with a high-pressure spray head 16 for impacting the water turbine 3, the water turbine 3 is in transmission connection with the generator 4, and the water inlet quantity and the water outlet quantity of the water storage tower 1 are kept balanced. The main control valve 14, the drain pipe 15 and the high-pressure spray head 16 are conventional products in the mechanical field, and the structure thereof is well known by the technical personnel in the field, and can also be directly purchased from the market, so the description is omitted, and a simple drawing method is adopted. Firstly, a water source is injected into the water storage tower 1, according to the principle that an object is suspended in water, the volume of the suspension pressure gauge 2 is large, and the nuclear load capacity of the suspension pressure gauge 2 is large, when the suspension pressure gauge 2 can be abutted against the top of the water storage tower 1, the water source is continuously injected until the suspension pressure gauge 2 is gradually immersed in the water, and it needs to be noted that the suspension pressure gauge 2 is partially immersed in the water, and a certain reserved space needs to be reserved in the water storage tower 1, so that the nuclear load capacity pressure of the suspension pressure gauge 2 can be downwards applied to the water in the water storage tower 1, so that the water in the water storage tower 1 generates downward pressure, according to the principle that the pressure has power, the main control valve 14 at the bottom of the water storage tower 1 is opened, the impact water pressure at the water outlet 13 is further increased through the high-pressure injector head 16, the rotating speed of the.
In this embodiment, the water storage tower 1 is provided with an abutting part abutting against the suspension pressure device 2, and the maximum immersion volume of the suspension pressure device 2 is not more than 90% of the whole volume of the suspension pressure device 2.
As shown in fig. 2, a supporting member 17 for indirectly abutting the suspension pressure device 2 with the water storage tower 1 is arranged between the suspension pressure device 2 and the top of the water storage tower 1. The support 17 constitutes an abutment.
As shown in fig. 3, the suspension pressure device 2 is directly abutted against the top of the water storage tower 1, at this time, the top of the water storage tower 1 forms an abutting part, and the maximum immersion volume of the suspension pressure device 2 is not more than 90% of the whole volume of the suspension pressure device 2.
A water circulation power generation device is disclosed, as shown in figure 5, comprising a first water pool 5, a second water pool 6, a first water storage tower 1a and a second water storage tower 1b, wherein the water level of the first water pool 5 is higher than that of the second water pool 6, a first water hammer pump 7 is arranged between the second water pool 6 and a flowing water source, the first water hammer pump 7 is arranged in the flowing water source, the first water hammer pump 7 is connected with the second water pool 6 through a hard water pipe with an inclination angle of 15 degrees, the water in the water source can be conveyed to the second water pool 6 at the upper part along the hard water pipe with the inclination angle of 15 degrees by utilizing the power of the flowing water source and the principle of the water hammer pump, a second water hammer pump 8 is arranged between the first water pool 5 and the second water pool 6, the second water hammer pump 8 is arranged in the second water pool 6, and is connected with the first water pool 5 through a hard water pipe with an inclination angle of 15 degrees, can carry the water in the second pond 6 in the first pond 5, first pond 5 is connected with first water storage tower 1a water inlet 12 through the water pipe, the lateral wall of first water storage tower 1a is provided with delivery port 1a1, delivery port 1a1 of first water storage tower 1a corresponds the setting and is in liquid level height department when suspension pressure gauge 2 submergence volume in first water storage tower 1a is 90%, delivery port 1a1 of first water storage tower 1a is connected with the water inlet 12 of second water storage tower 1b through the water pipe, discharge into second pond 6 behind water turbine 3 in the drainage of first water storage tower 1a and second water storage tower 1b outlet 13, and water turbine 3 all is connected with generator transmission through the transmission shaft. Because, the water yield and the inflow of first retaining tower 1a and second retaining tower 1b all keep balance, consequently can guarantee the water level in first retaining tower 1a and the second retaining tower 1b keep balance to can guarantee that suspension pressure gauge 2 can keep the state of exerting pressure all the time, thereby reach the purpose of circulation electricity generation.
In this embodiment, the water inlet 12 of the first water storage tower 1a has the following water inlet volume: water discharge amount of the water outlet 1a 1: the water discharge amount of the water discharge port 13 of the first water storage tower 1a is 2:1: 1.
A guide surface (not shown) is formed in the second water tank 6, the second hydraulic ram 8 is arranged at the downstream of the guide surface, and the hydraulic turbine 3 is arranged at the upstream of the guide surface.
In practical application, the water circulation power generation equipment in the embodiment can be used as a set of basic power generation equipment according to the actual geographic environment, and a large-scale hydroelectric power station is built through connection.
The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention.
Claims (9)
1. A supercharged power generation device is characterized in that: including holding the water tower and setting up the suspension pressure gauge in holding the water tower, the top of holding the water tower is provided with the water inlet, the retaining tower has at least one to set up in the outlet of its bottom, sets up the outlet in retaining tower bottom and is provided with main control valve and connects the drain pipe on main control valve, the play water end of drain pipe is provided with the high-pressure injector head that is used for assaulting the hydraulic turbine, the hydraulic turbine is connected with the generator transmission, the inflow and the water yield keep balance of holding the water tower.
2. A supercharged power-generating device according to claim 1, characterized in that: the water storage tower is provided with an abutting part abutted against the suspension pressure gauge, and the maximum immersion volume of the suspension pressure gauge is not more than 90% of the whole volume of the suspension pressure gauge.
3. A supercharged power-generating device according to claim 2, characterized in that: the side wall of the water storage tower is provided with a water outlet, and the water outlet is correspondingly arranged at the liquid level height when the immersion volume of the suspension pressure gauge is 90%.
4. A supercharged power-generating device according to claim 1, 2 or 3, characterized in that: the suspension pressure gauge is an air suspension pressure gauge, and the air suspension pressure gauge is provided with a closed cavity for storing air.
5. A supercharged power-generating device according to claim 1, characterized in that: the drain pipe is a high-pressure hose.
6. A supercharged power-generating device according to claim 1, characterized in that: the water outlet is arranged in the center of the bottom of the water storage tower.
7. A hydronic plant comprising at least two booster generators according to any of claims 1-6, characterized in that: including first pond, second pond, first retaining tower and second retaining tower, water liquid height in the first pond is higher than the water liquid height in the second pond, be provided with the first hydraulic ram pump in introducing the second pond with water by the water source that flows between second pond and the mobile water source, be provided with the second hydraulic ram pump in introducing the first pond with water by the second pond between first pond and the second pond, first pond passes through the water pipe and is connected with first retaining tower water inlet, the lateral wall of first retaining tower is provided with the delivery port, the delivery port of first retaining tower leads to pipe to be connected with the water inlet of second retaining tower, the drainage of first retaining tower and second retaining tower outlet is arranged into in the second pond behind the hydraulic turbine.
8. The water-circulating power generation device and the booster power generation device thereof according to claim 7, wherein: the first hydraulic ram pump sends water to the second water pool through the hard water pipe inclined upwards by 15 degrees, and the second hydraulic ram pump sends water to the first water pool through the hard water pipe inclined upwards by 15 degrees.
9. The water-circulating power generation device and the booster power generation device thereof according to claim 8, wherein: the second water hammer pump is arranged at the downstream of the flow guide surface, and the water turbine is arranged at the upstream of the flow guide surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030223.4A CN112128043A (en) | 2020-09-27 | 2020-09-27 | Water circulation power generation equipment and supercharging power generation device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030223.4A CN112128043A (en) | 2020-09-27 | 2020-09-27 | Water circulation power generation equipment and supercharging power generation device thereof |
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| CN112128043A true CN112128043A (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011030223.4A Pending CN112128043A (en) | 2020-09-27 | 2020-09-27 | Water circulation power generation equipment and supercharging power generation device thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260857A (en) * | 2008-04-23 | 2008-09-10 | 齐峰 | Generating set for levitating force switching to pressure |
| CN102269098A (en) * | 2010-06-05 | 2011-12-07 | 许汉清 | Sustainably-recyclable hydraulic power generating method and system |
| CN102619668A (en) * | 2012-04-06 | 2012-08-01 | 王焕然 | Constant-pressure water-gas compatible cabin power energy storage system |
| WO2012116956A1 (en) * | 2011-02-28 | 2012-09-07 | Universität Innsbruck | Hydraulic energy store |
| WO2014128729A2 (en) * | 2013-02-22 | 2014-08-28 | Mahadevan A S | Hydro buoyancy weight power generation |
| CN109779819A (en) * | 2019-04-02 | 2019-05-21 | 吕传庆 | A kind of energy-storage type electricity generation system |
-
2020
- 2020-09-27 CN CN202011030223.4A patent/CN112128043A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260857A (en) * | 2008-04-23 | 2008-09-10 | 齐峰 | Generating set for levitating force switching to pressure |
| CN102269098A (en) * | 2010-06-05 | 2011-12-07 | 许汉清 | Sustainably-recyclable hydraulic power generating method and system |
| WO2012116956A1 (en) * | 2011-02-28 | 2012-09-07 | Universität Innsbruck | Hydraulic energy store |
| CN102619668A (en) * | 2012-04-06 | 2012-08-01 | 王焕然 | Constant-pressure water-gas compatible cabin power energy storage system |
| WO2014128729A2 (en) * | 2013-02-22 | 2014-08-28 | Mahadevan A S | Hydro buoyancy weight power generation |
| CN109779819A (en) * | 2019-04-02 | 2019-05-21 | 吕传庆 | A kind of energy-storage type electricity generation system |
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