CN105569912A - Comprehensive hydraulic power generation system - Google Patents
Comprehensive hydraulic power generation system Download PDFInfo
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- CN105569912A CN105569912A CN201610115074.9A CN201610115074A CN105569912A CN 105569912 A CN105569912 A CN 105569912A CN 201610115074 A CN201610115074 A CN 201610115074A CN 105569912 A CN105569912 A CN 105569912A
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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
- F03B13/08—Machine or engine aggregates in dams or the like; Conduits therefor, e.g. diffusors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/04—Free-flow canals or flumes; Intakes
-
- 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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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Combustion & Propulsion (AREA)
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- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention provides a comprehensive hydraulic power generation system. A water channel is composed of a water channel inlet section, a water channel middle section and a water channel drainage section which are sequentially connected and incline downwards. The inclination of the water channel middle section is smallest, a power generator set B is arranged in the water channel middle section, and a power generator set A is arranged on the upstream part of the power generator set B. A power generator set C is arranged in the water channel drainage section. The power generator set A, the power generator set B and the power generator set C share the same water channel. The power generator set A can be located either outside a hydropower station dam body or inside the dam body. Resources are integrated through a scientific layout, the three power generator sets with different power generation modes can all meet the requirements for flow and pressure, and powerful hydraulic potential is converted into electricity to the maximum extent highly efficiently. The comprehensive hydraulic power generation system is simple in structure, reliable in performance, high in work efficiency and high in power generation efficiency, the installed capacity and the hydroenergy utilization rate are maximized, and the comprehensive hydraulic power generation system is particularly suitable for an ultra-high dam and large-flow hydropower station with the water elevation more than 270 m.
Description
Technical field
The present invention relates to a kind of hydroelectric power system, particularly relate to a kind of efficient, comprehensive hydroelectric power system being applicable to superelevation dam type water power plant.
Background technique
Hydroelectric power (Hydroelectricpower) be utilize river, lake etc. to be positioned at water that eminence has a potential energy flow to lower, potential energy that will be wherein contained converts the kinetic energy of water turbine to, then mat water turbine is motive force, and pushing generator produces electric energy.
Traditional hydroelectric power system as shown in Figure 1, is provided with water channel 2 in hydroelectric station dam 1, and water channel 2 top entry is water intake 3, is provided with a cylindrical valve 4 in water channel 2, and be provided with a water turbine 5 bottom water channel 2, water turbine 5 connects generator 6.During work, open cylindrical valve 4, water enters water channel 2 from water intake 3, pours down along water channel 2, and promotes water turbine 5 and do work, and then pushing generator 6 works, and produces electric energy.
There is following defect in traditional hydroelectric power system:
1, waterpower utilization rate is low.For high dam type water power plant, especially water power plant, the superelevation such as gorges Hydropower, Xi Luo Du reservoir dam, it has huge water energy, but is only configured with a water turbine bottom water channel, and unit electric motor power is less, can cannot make full use of water.Generation Rate as current in gorges Hydropower only has 50%.
2, during water turbine running, it has the blade of half to form reverse flow, produces inverse gesture impact, reduce the working efficiency of water turbine, thus also have impact on the efficiency of complete machine unit turbo machine.
In order to solve the problem, claimant has applied for patent " a kind of tandem mill hydroelectric power system ", and application number is 201510993308.5, and it arranges two row's units in water channel both sides, improves the electric motor power of system, can make full use of water energy.Meanwhile, water turbine half is located in water turbine shielding groove, and water turbine shielding groove can reduce the inverse gesture impact of reverse flow on turbo machine, water turbine maneuver energy is exported and maximizes.In addition, water channel Drainage Section is increased at water channel end downward bending, water channel Drainage Section produces powerful tractive force effect with certain height fall to the fluid of unit, improve water volume flow rate, the gravity accleration effect that current produce in almost vertical decline passway, ensure that the rotating speed of whole unit.
But in above-mentioned tandem mill hydroelectric power system, if dam type is enough high, especially for the super power station of more than 270m retaining elevation, the unit of water channel front end easily destroys by rush of water by the excess pressure that water body falls, the water body simultaneously fallen from water channel Drainage Section still has very large potential energy, but fails to be fully used.
Summary of the invention
The technical problem to be solved in the present invention be how greatly to utilize superelevation dam possibly, the huge water in large discharge water power plant can generate electricity.
In order to solve the problems of the technologies described above, technological scheme of the present invention is to provide a kind of comprehensive hydraulic electrogenerating system, it is characterized in that: water channel is made up of be the water channel entrance, water channel intermediate section and water channel Drainage Section three part that are tilted to lower setting connected successively, and water channel intermediate section inclination is minimum;
Be provided with generator set B in water channel intermediate section, the upstream of generator set B is provided with generator set A, is provided with generator set C in water channel Drainage Section, and generator set A, generator set B and generator set C share same water channel.
Preferably, the angle between described water channel entrance and water channel intermediate section is obtuse angle, and the angle between described water channel intermediate section and water channel Drainage Section is obtuse angle or right angle.
Preferably, described water channel entrance is located in hydroelectric station dam, and the top entry of described water channel entrance is water intake; Cylindrical valve is provided with in described water channel entrance.
Preferably, described generator set A is located in the water channel entrance in described hydroelectric station dam, and the water outlet of generator set A is connected by the generator set B that flexible pipe and described hydroelectric dam are external.
Preferably, described generator set A is located at described hydroelectric dam external body, and is positioned at the initial segment of described water channel intermediate section.
Preferably, described generator set A comprises circular body of wall, is evenly distributed with turbo machine in circular body of wall, and turbo machine connects generator.
Preferably, at least one is provided with for reducing reverse flow water turbine shielding groove on the inverse gesture impact of water turbine in the body of wall of described water channel intermediate section at least side, water turbine is located in water turbine shielding groove, and water turbine connects generator.
Preferably, described water turbine shielding groove be semicircle, and described in described semicircle size and half, the size of water turbine matches.
Preferably, central water flow passage is left between two described water turbines that described water channel intermediate section both sides are oppositely arranged.
Preferably, the line stretcher of described water channel intermediate section end is provided with water channel buffer area.
Preferably, described generator set C vertical direction layered arrangement in water channel Drainage Section, water channel is provided with vacuum pump above Drainage Section.
Preferably, first current drive generator set A to do work, and part hydraulic potential is converted into electric energy; Generator set A water body out drives the generator set B in water channel intermediate section to do work again, now, in the process that current slow down at flow velocity after last group of water turbine, flow velocity can be improved under the drive of central authorities' current relatively at a high speed again, then drive next group water turbine running; Water channel Drainage Section produces tractive force by height fall to fluid, and form drainage, to improve the water velocity in water channel intermediate section, meanwhile, generator set B water body out also can drive the generator set C in water channel Drainage Section to do work.
Comprehensive hydraulic electrogenerating system provided by the invention, shares a water channel by the generator set of Three models, adopts a water multicomputer, multi-mode operation to generate electricity.By the layout of science, carry out the integration of resource, make the unit of three kinds of different power generation modes can meet its flow and pressure demand, huge hydraulic potential is converted into electric energy to greatest extent, most efficiently.First digest a part of water pressure by generator set A, make it be unlikely to damage the generator set B in water channel intermediate section.Two row's units are set in water channel intermediate section both sides, improve the electric motor power of system, water energy can be made full use of.Meanwhile, the water turbine half in water channel intermediate section is located in water turbine shielding groove, and water turbine shielding groove can reduce the inverse gesture impact of reverse flow on turbo machine, water turbine maneuver energy is exported and maximizes.Water channel Drainage Section is increased at water channel end downward bending, water channel Drainage Section produces powerful tractive force effect with certain height fall to the fluid of unit, improve water volume flow rate, the gravity accleration effect that current produce in almost vertical decline passway, ensure that the rotating speed of whole generator set B, generator set C simultaneously in water channel Drainage Section can also utilize the water of abandoning of generator set B to do work, and is used by hydraulic potential ultimate attainment.
System provided by the invention overcomes the deficiencies in the prior art, and structure is simple, reliable performance, working efficiency is high, and Generation Rate is large, and electric motor power can be made to maximize, waterpower utilization rate maximizes, and is particularly useful for the superelevation dam of retaining more than elevation 270m, the water power plant of large discharge.
Accompanying drawing explanation
Fig. 1 is traditional hydroelectric power system schematic diagram;
The comprehensive hydraulic electrogenerating system plan view that Fig. 2 provides for embodiment 1;
Fig. 3 is " ring-current " unit plan view;
Fig. 4 is " interflow formula " unit plan view;
Fig. 5 is " drainage type " unit plan view;
Fig. 6 is " drainage type " unit longitudinal sectional view;
The comprehensive hydraulic electrogenerating system plan view that Fig. 7 provides for embodiment 2.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
Comprehensive hydraulic electrogenerating system comprise to flow to from above arrange successively in downstream " ring-current ", " interflow formula ", " drainage type " three kinds of power generation modes unit, the unit of three kinds of power generation modes shares a water channel, runs generating simultaneously.This power generation mode is applicable to the superelevation dam of retaining more than elevation 270m, the water power plant of large discharge, by the layout of science, carry out the integration of resource, to guarantee that the unit of three kinds of different power generation modes all meets flow required for it and pressure demand, huge hydraulic potential is converted into electric energy to greatest extent, most efficiently.
The comprehensive hydraulic electrogenerating system schematic that Fig. 2 provides for the present embodiment, described comprehensive hydraulic electrogenerating system comprises water channel, and water channel is made up of the water channel entrance 2-1, the water channel intermediate section 2-2 that connect successively and water channel Drainage Section 2-3 tri-part.Water channel entrance 2-1, water channel intermediate section 2-2 and water channel Drainage Section 2-3 are and are tilted to lower setting, and water channel intermediate section 2-2 inclination is minimum.Water channel intermediate section 2-2 end downward bending, forms water channel Drainage Section 2-3.Angle between water channel entrance 2-1 and water channel intermediate section 2-2 is obtuse angle, and the angle between water channel intermediate section 2-2 and water channel Drainage Section 2-3 is obtuse angle or right angle.
Water channel entrance 2-1 is located in hydroelectric station dam 1, and the top entry of water channel entrance 2-1 is water intake 3, is provided with cylindrical valve 4 in water channel entrance 2-1.
Generator set A-" ring-current " unit, can be located in hydroelectric station dam 1, also can be located at outside hydroelectric station dam 1.Composition graphs 3, generator set A comprises circular body of wall, is evenly distributed with turbo machine in circular body of wall, and turbo machine connects generator, forms generator set.
When being located in dam, be located in water channel entrance 2-1 by generator set A.In order to convenience of calculation, suppose normal pool level 300m elevation, adopt semisubmersible platform, being dived by ring-current unit is deep to apart from the water surface-120m working depth, and the pressure needed for such ring-current unit, flow, flow velocity, flow condition are all met.The water outlet of generator set A adopts the flexible pipe possessing some strength to be connected with the second unit water channel outside dam, has so just possessed power generation conditions.Ring-current working pressure 11.5-12kg/cm
2, flow velocity 115-120m/s, possesses very big kinetic energy and impact force, so ring-current turbine size is also not very big, diameter 15m (connecting control valve), high about 8m, installation 300-600 ten thousand kilowatts (platform), 4 one group, every platform unit second flow is greater than 1800m
3, 4 water consumption 7200-8000m
3/ s, just in time meets latter two unit generation pattern water consumption needs, perfect adaptation.The benefit of semisubmersible platform is that water level changes about 50m up and down and has no effect to it, because this floating platform can be elevated with storage capacity fluctuation in stage, remains this water level, unless can not meet pressure 11.5kg/cm
2, flow velocity 115m/s requirement.For example water outlet-150m elevation, in storehouse, water level is down to 250m, and three kinds of units still can generate electricity.
When being located at outside dam, be located at the initial segment in water channel intermediate section 2-2 by generator set A.This mode unit installation is convenient, and generating capacity is the same with above-mentioned semi-submersible type, and problem is that it can not control water pressure and second flow, and the immense pressure especially completely during storage capacity, huge flow velocity are difficult to control.
Above-mentioned two kinds " ring-currents " cut both ways, but huge single-machine capacity and generated energy have great market value, especially in the super power station of more than 270m retaining elevation, serve as first senior, efficiency power generation pattern and have great market value.In addition, the magical part of this " ring-current " unit generation pattern is that it can adopt hundreds of kilowatts (platforms)-600 10,100 kilowatts (platform) to be all a pattern, and water consumption is also few, water recycling " interflow formula " tandem mill generating after simultaneously can also generating electricity.One 3,000,000 kilowatts unit water usage 1800m second
3, its moment impact kinetic energy, up to 50,000 tons, can drive the generator of 3,000,000 kilowatts normally to run with the kinetic energy of this lasting power generation mode completely.
Generator set B-" interflow formula " unit, is located in water channel intermediate section 2-2, is positioned at the downstream of generator set A.Composition graphs 4, semicircular water turbine shielding groove 7 is arranged with in the body of wall of water channel intermediate section 2-2 both sides, water turbine shielding groove 7 is that half water turbine is large, water turbine 5 is generally located in water turbine shielding groove 7, and two water turbines that water channel both sides are oppositely arranged are one group.Two row's water turbines are arranged, and can make full use of water energy, water turbine maneuver energy is exported and maximizes.Meanwhile, water turbine shielding groove can reduce the inverse gesture impact of reverse flow on turbo machine.Water turbine 5 connects generator 6.
In " interflow formula " unit, the electric motor power of every platform unit is 60 ~ 800,000 kilowatts, and every bar water channel can symmetric configuration 6 ~ 8 groups, i.e. 12 ~ 18 water turbines, and certainly, concrete number of units, also needs to set according to the power station flow under specific operation.
Water channel intermediate section 2-2 starting point height is 100m, and end height is 90m.Channel width between the body of wall of water channel intermediate section 2-2 both sides is 9.8m.The distance of 3m is stopped between two water turbines be oppositely arranged, in the process that such water velocity slows down at flow velocity after water turbine, flow velocity can be recovered under the drive of central authorities' current relatively at a high speed again, then drive next unit to operate, so until end unit.
" interflow formula " unit generation utilizes water pressure to be greater than 10kg/cm
2, flow velocity is greater than 100m/s, flow 8000m
3the surplus value of/s, adopts 8 groups * 2-12 group * 2, single-machine capacity 600,000 kilowatts (platform), and wall scroll water channel adopts the design of 100m decline 10m ramp, is conducive to like this keeping flow velocity in water channel, does not affect horizontal stable between unit.When storage capacity reduces, minimizing (successively decreasing) unit mode can be adopted to generate electricity.
Generator set C-" drainage type " unit, is located in the 2-3 of water channel Drainage Section, is positioned at the downstream of generator set B, vacuum pump 8 is provided with above the 2-3 of water channel Drainage Section, before whole system work, first open vacuum pump, close when reaching the vacuum pressure of-0.1 ~-0.2kg.Before " drainage type " unit adopts, water recycling is abandoned in two-stage generating, and adopt gravity drainage principle, this power generation mode kinetic transformation rate about 70%, exceedes the kinetic transformation rate of axial flow 50%.Due to 8000m
3/ s water collapsing force is huge, needs to reduce water energy, and method for reducing only has elongation, widens the cross section of water channel Drainage Section.
As shown in Figure 5, each layer plane layout 2 groups of 600,000 kilowatts of units and 6-8 group 800,000 kilowatts of units in water channel Drainage Section, the unit being positioned at both sides adopts lateral arrangement (namely vertical with water channel intermediate section inflow direction), be positioned at middle unit and adopt axial arranged (namely parallel with water channel intermediate section inflow direction), Vertical direction arranges 3-5 layer, unit between coaxially arranged adjacent layer is connected by water channel, as shown in Figure 6, has so just digested this 8000m
3/ s water.
By each layer plane layout 2 groups of 600,000 kilowatts of units and 6 groups of 800,000 kilowatts of units, Vertical direction arranges 3 layers of calculating.A unit is established every 15m from 80m elevation, wherein, 600,000 kilowatts of diameter 6.8m*10m, 800000 kilowatts of diameter 8m*12m, add water-supply line height about 15m one deck, Vertical dimension establishes 3 layers of unit, do the drainage of drainage lumens low speed for remaining more than 30 meters, thirties meters of drainages adopt vertical angles.The buffer area of-20m is also provided with below 0m line, to guarantee safety bottom the 2-3 of water channel Drainage Section.
10,000 m are greater than with Xi Luo Du reservoir mean flowrate
3/ s calculates, establish the generated energy of a water channel, Three models, flow by 8000m3/s temporarily, the electric motor power of Xi Luo Du reservoir turbogenerator reaches 4,000 ten thousand kilowatts, compares traditional 1,480 ten thousand kilowatts, and the generated energy of the comprehensive hydraulic electrogenerating system that the present embodiment provides is traditional 2.7 times.
Embodiment 2
The comprehensive hydraulic electrogenerating system schematic that Fig. 7 provides for the present embodiment, the present embodiment is substantially the same manner as Example 1, and its difference is: on the line stretcher of water channel intermediate section 2-2 end, be provided with water channel buffer area 2-4.After current pour down from water channel intermediate section 2-2, part water directly falls from water channel Drainage Section 2-3, and part water flows down from water channel Drainage Section 2-3 after water channel buffer area 2-4 cushions.
Embodiment 3
The difference of the present embodiment and embodiment 1 is: flow to the unit that downstream only arranges " ring-current ", " interflow formula " two kinds of power generation modes successively from above, and the unit of two kinds of power generation modes shares a water channel, runs generating simultaneously.
Although this mode waterpower utilization rate comparatively embodiment 1 is low, relatively traditional hydroelectric power system or high.
Embodiment 4
The difference of the present embodiment and embodiment 1 is: flow to the unit that downstream only arranges " interflow formula ", " drainage type " two kinds of power generation modes successively from above, and the unit of two kinds of power generation modes shares a water channel, runs generating simultaneously.
Although this mode waterpower utilization rate comparatively embodiment 1 is low, relatively traditional hydroelectric power system or high.
Claims (10)
1. a comprehensive hydraulic electrogenerating system, it is characterized in that: the water channel entrance (2-1) that water channel is tilted to lower setting by being of connecting successively, water channel intermediate section (2-2) and water channel Drainage Section (2-3) three part form, water channel intermediate section (2-2) inclination is minimum;
Be provided with generator set B in water channel intermediate section (2-2), the upstream of generator set B is provided with generator set A, is provided with generator set C in water channel Drainage Section (2-3), and generator set A, generator set B and generator set C share same water channel.
2. a kind of comprehensive hydraulic electrogenerating system as claimed in claim 1, it is characterized in that: described water channel entrance (2-1) is located in hydroelectric station dam (1), the top entry of described water channel entrance (2-1) is water intake (3); Cylindrical valve (4) is provided with in described water channel entrance (2-1).
3. a kind of comprehensive hydraulic electrogenerating system as claimed in claim 2, it is characterized in that: described generator set A is located in the water channel entrance (2-1) in described hydroelectric station dam (1), the water outlet of generator set A is connected with described hydroelectric station dam (1) generator set B outward by flexible pipe.
4. a kind of comprehensive hydraulic electrogenerating system as claimed in claim 1, is characterized in that: it is outside that described generator set A is located at described hydroelectric station dam (1), and be positioned at the initial segment of described water channel intermediate section (2-2).
5. a kind of comprehensive hydraulic electrogenerating system as described in any one of claim 1-4, is characterized in that: described generator set A comprises circular body of wall, is evenly distributed with turbo machine in circular body of wall, and turbo machine connects generator.
6. a kind of comprehensive hydraulic electrogenerating system as claimed in claim 1, it is characterized in that: be provided with at least one in the body of wall of described water channel intermediate section (2-2) at least side for reducing reverse flow water turbine shielding groove (7) on the inverse gesture impact of water turbine, water turbine (5) is located in water turbine shielding groove (7), and water turbine (5) connects generator (6).
7. a kind of comprehensive hydraulic electrogenerating system as claimed in claim 6, is characterized in that: leave central water flow passage between two described water turbines (5) that described water channel intermediate section (2-2) both sides are oppositely arranged.
8. a kind of comprehensive hydraulic electrogenerating system as claimed in claim 1, is characterized in that: the line stretcher of described water channel intermediate section (2-2) end is provided with water channel buffer area (2-4).
9. a kind of comprehensive hydraulic electrogenerating system as claimed in claim 1, it is characterized in that: described generator set C is vertical direction layered arrangement in water channel Drainage Section (2-3), water channel Drainage Section (2-3) top is provided with vacuum pump (8).
10. a kind of comprehensive hydraulic electrogenerating system as described in any one of claim 7 ~ 9, is characterized in that: first current drive generator set A to do work, and part hydraulic potential is converted into electric energy; Generator set A water body out drives the generator set B in water channel intermediate section (2-2) to do work again, now, in the process that current slow down at flow velocity after last group of water turbine, flow velocity can be improved under the drive of central authorities' current relatively at a high speed again, then drive next group water turbine running; (2-3) produces tractive force by height fall to fluid in water channel Drainage Section, form drainage, to improve the water velocity in water channel intermediate section (2-2), meanwhile, generator set B water body out also can drive the generator set C in water channel Drainage Section (2-3) to do work.
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| CN201610115074.9A CN105569912A (en) | 2016-03-01 | 2016-03-01 | Comprehensive hydraulic power generation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989869A (en) * | 2019-04-28 | 2019-07-09 | 中国华能集团清洁能源技术研究院有限公司 | A kind of water generating turbine apparatus and method |
| CN113265988A (en) * | 2021-05-27 | 2021-08-17 | 广东粤源工程咨询有限公司 | Porous hedging energy dissipation structure for hydraulic structure and implementation method |
| CN114738164A (en) * | 2021-01-08 | 2022-07-12 | 陈纯辉 | Mutual support system for green energy power generation |
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| CN109989869A (en) * | 2019-04-28 | 2019-07-09 | 中国华能集团清洁能源技术研究院有限公司 | A kind of water generating turbine apparatus and method |
| CN114738164A (en) * | 2021-01-08 | 2022-07-12 | 陈纯辉 | Mutual support system for green energy power generation |
| CN113265988A (en) * | 2021-05-27 | 2021-08-17 | 广东粤源工程咨询有限公司 | Porous hedging energy dissipation structure for hydraulic structure and implementation method |
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Application publication date: 20160511 |