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234 results about "Tidal water" patented technology
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Tapered helical auger turbine to convert hydrokinetic energy into electrical energy
A helical auger turbine and hydrokinetic device for use with electrical generators for producing electricity. The auger turbine includes a generally helical turbine blade rotatably mounted on a central shaft, which may be tapered at each end, and a flange extending perpendicularly to an edge of the turbine blade. At least one turbine blade support connection is included for connecting the central shaft to a support structure. An electrical generator may be powered by the helical auger turbine, that can be used in a tidal water flow. The helical auger turbine can operate a high pressure pump connected to a hydraulic accumulator for storing pressurized hydraulic fluid from the high pressure pump. An electrical generator can be operated by hydraulic fluid delivered from the hydraulic accumulator at times of slow water flow. A plurality of helical auger turbines can be horizontally oriented under water, tethered to legs of an ocean platform such as an oil rig secured to the seabed.
Owner:ANDERSON JR WINFIELD SCOTT
Tapered helical auger turbine to convert hydrokinetic energy into electrical energy
Owner:ANDERSON JR WINFIELD SCOTT
Modular system for generating electricity from moving fluid
InactiveUS20090026767A1Inexpensive to buildInstallation economyPropellersWind motor controlVertical axisElectric power
A modular system for producing electricity from the channel, river, ocean or tidal water currents and wind is disclosed. The embodiments of the system comprise a set of interconnected modules. Each module contains a fluid flow energy converter positioned in a protecting housing. A converter consists of a vertical axis underwater hydro-turbine or wind turbine, connected to the electrical generator. The turbine is essentially a paddlewheel having an arrangement of attached paddles with mutually perpendicularly oriented asymmetric blades that are fixed to the poles at both ends. Such orientation of blades provides a positive feedback minimizing the blades' friction while maximizing a drag force and maximizing the turbine's efficiency. The electrical generator transforms the rotational energy of the turbine into electricity. An array of modules may be arranged side by side, thus providing versatile configurations of submersible hydroelectric or wind power systems, which are inexpensive to build, install and maintain.
Owner:PETROUNEVITCH EDOUARD
Cascading system of floodway stormwater containment basins
A series of cascading basins is excavated along a sloped floodway typically established between adjoining agricultural fields. These basins address problems of stormwater runoff from agricultural lands and certain urban areas where runoff carries sediment, nitrogen, phosphorous and other pollutants into nearby streams, rivers and tidal waters, The cascading basin series begins with basin placement at a higher topographical elevation, followed by basin positioning downwardly along a natural or excavated floodway slope simulating a terraced effect. As upper basins are filled they spill over into basins therebelow. Angular features of basin exit grade and stormwater escape slopes retard egress of stormwater. A lowermost terminal basin includes sand berm, boulders, rip rap and other barriers to retain the polluted runoff. Basins may include vegetation, slag stone layers, and other pollutant treatment elements.
Owner:OWINGS SAMUEL
Sea water resistant ecological floating bed
InactiveCN101508490ALow costCorrosion resistantSeawater treatmentReceptacle cultivationEutrophicationRestoration method
The invention discloses a seawater endurable ecological floating floor, and relates to a plant growth carrier. The invention provides a seawater endurable ecological floating floor which is used for the plant restoration in an eutrophicated seawater environment, a floating floor fixing device and a plant restoration method in the eutrophicated seawater environment. The floating floor is provided with a floor body and cultured plants; the floor body is provided with two layers of plastic films; a foam bar is arranged between the two layers of plastic films; the foam bar is provided with culture holes; and fixing rings are arranged on the circumference of the two layers of plastic films. The fixing device is provided with fixing piles and fixing ropes; the fixing piles are fixed under water; and the fixing ropes are connected with the fixing piles. The restoration method comprises the following steps: preparing the floor body of the floating floor; driving the fixing piles under water and fixing one end of each fixing rope onto the fixing piles along the water flow direction; planting the salt endurable restoration plants into the culture holes through cuttage and transporting the plants to a restoration area; connecting the fixing rings and the fixing ropes, and adjusting the tightness of the fixing ropes so as to make the fixing ropes float up and down with the flux and reflux of the tide; and adjusting the salt endurable restoration plants according to the growth status and restoration effects of the salt endurable restoration plants.
Owner:XIAMEN UNIV +1
Flow guiding device of vertical axis tidal current generator
InactiveCN101319648AEasy to moveImprove efficiencyHydro energy generationReaction enginesTidal waterWater flow
The invention discloses a diversion device of a vertical axis tidal generator, which relates to a diversion device of a vertical axis tidal water turbine which generates power with the energy of the rivers or ocean currents with quite low water flow speed. The device is technically characterized in that a main runner consists of the inlet of the diversion device, a contraction section, a middle runner, a divergent section and the outlet of the diversion device. The fluid is accelerated when flowing past the front sections of the contraction section and the middle runner; the flow speed from the tail end of the middle runner to the outlet of the diversion device is reduced, so that the pressure is recovered. In this way, the liquid flows the turbine with quite high flow speed, so as to improve the utilization rate of the water energy and recover stable flow status at the downstream of the turbine. The device is also provided with an auxiliary runner, so that the circular arc-shaped low-pressure position of the of the inflow surface at the inlet of the diversion device is communicated with the opening at the tail end of the middle runner; the structure can pump the fluid in the middle runner, expand the pressure difference in front of and behind the turbine, promote the fluid to be further accelerated and improve the flow pattern of the fluid.
Owner:TSINGHUA UNIV +1
Ground-type tidal Irrigation system
ActiveCN102379235ARealize continuous recyclingEasy to controlClimate change adaptationWatering devicesGround temperatureCold season
The invention discloses a ground-type tidal Irrigation system, which is used for irrigating potted plants with water or nutrient solution and comprises an upper water supply and drainage trench which is arranged at the upper part of a seedbed, a lower water supply and drainage pipeline which is arranged below the seedbed and is connected with the upper water supply and drainage trench, a water supply system and a water drainage system which are respectively connected with the lower water supply and drainage pipeline and a nutrient solution pond, and a comprehensive control system which are connected with the water supply system, the water drainage system and the nutrient solution pond. An ultraviolet ozone disinfection system and an electric floor heating system are additionally arranged in the system. The ground-type tidal Irrigation system can simulate tide rising and tide falling to irrigate the plants from roots, realizes the continuous cyclic use of the nutrient solution through the ultraviolet ozone disinfection system, reduces the spreading of soil-borne diseases and improves the production benefit of crops; good ground temperature can be provided for the growth and the irrigation of the crops in cold seasons and the situation that the crops grow slowly is avoided; and the comprehensive control system can realize the comprehensive control of the irrigation system, the disinfection system and the electric floor heating system to enable the application to be more convenient and faster.
Owner:BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI
Staging of tidal power reserves to deliver constant electrical generation
InactiveUS7564143B1Power balanceConstant level of hydrodynamic energy conversionFluid couplingsMachines/enginesEngineeringElectric power
Oceanic tidal energy sources hydroelectric generating system coupled to a primary tidal basin through a bi-directional tideway exciting a turbine as a diurnal cycle tide waxes and wanes. A secondary tidal basin includes a tideway and turbine with flow modulated by a regulator gate to proportionately blend reserve tidewater capacity of the secondary tidal basin as a delayed resource compensating a slacking of the primary tidal flow with a graduated secondary tidal basin influx or outflow providing an aggregate summation of tidal energy acting upon the turbines to continuously drive generators and deliver a constant flow of electric power throughout the diurnal tidal cycle. Shunting excess tidal energy around the turbines during periods of reduced electric power demand furthers a full capacity of tidal resources in subsequent phases of the diurnal tidal day when solar day related power demand may increase.
Owner:WEBER HAROLD J
Variable electrical generator
ActiveUS20130062889A1Maximum performanceGuaranteed uptimeAC motor controlGas turbine plantsTidal waterWater turbine
A variable electrical generator (20) is operable to convert mechanical motion to electrical power. The generator (20) includes at least a stator element (60) and a rotor element (50) including coils (320) and magnets (90). The generator (20) includes a configuration of modules (80) including the coils (320) for generating wavelets (30) in response to the coils (320) interacting magnetically with the magnets (90), and a control arrangement (70) for combining the wavelets (30) for generating a composite synthesized power output (10) from the generator (20). A method of maintaining a variable generator (20) includes steps of: (a) determining operating status of modules (80) of the generator (20); (b) unplugging and replacing one or more defective modules (80) as identified in step (a). The generator (20) is susceptible to being used in renewable energy system, for example in a tidal water turbine, in a wind turbine, in association with an oscillating wind vane, in association with an ocean float, in a hydroelectric turbine, in a steam turbine.
Owner:HAGAL TECH AS
Underwater anchorage system auxiliary wooden stool structure platform and construction method thereof
InactiveCN101078211ASimple structureReduce weightArtificial islandsUnderwater structuresTidal waterRiver bed
The invention relates to a stool platform assisting anchorage system in water and the construction method. The structure is that the upper end of support pile of steel pipe is fixed with the whole platform truss; anchor rope of anchorage system in water is fixed with the whole platform truss; the lower end of support pile of steel pipe is fixed with riverbed rock. The construction method is that the whole platform truss is assembled on assembling ship and anchorage system in water is set at the position of pier; the whole platform truss is transported to the pier position in floating and by using anchorage system in water the platform truss is located accurately; support piles of steel pipe are installed symmetrically; by using variety of water level the platform truss is fixed on the top of support pile to accomplish system transformation; by using anchor rod the support pile of steel pipe is fixed with the bedrock and by using prior anchorage system platform stability is increased. The invention is provided with simple structure, light weight, small water resistance surface and low cost. Simple and practical method is proposed for building basic construction platform under conditions of deep water, large flowing speed, strong tide, no covering layer for riverbed or less covering layer for riverbed.
Owner:THE 2ND ENG CO LTD MBEC
Forecasting method of water level of potamic tidewater
The invention relates to a forecasting method of the water level of potamic tidewater. A traditional forecasting method of tidal hour comprises a time propagation method and a time isolation retardation method which weaken the influence of multiple factors, such as tides, radial flows, riverway terrain, wind power, wind directions, and the like on the tidewater to a certain extent. The forecasting method of the water level of the potamic tidewater comprises the following concrete steps: firstly, constructing a neural network model based on a neural network function in a kit function library of MATLAB 6.5 and the history data of tidewater water levels and time; then, utilizing a neural network training function in the kit function library to train a network; utilizing a simulation function to test the network; and finally, using the trained and tested neural network model to forecast a water level value of the next high tide level or the next low tide level. The invention uses the history tidewater data to forecast the water level value of short-term tidewater and can fully neglect the influence of uncertain factors, such as wind directions, rainfall, water supply and drainage, river-bed variation, and the like.
Owner:日照市信腾信息科技有限公司
Double-reservoir self-adjusting tidal power generation method and system
InactiveCN101314943AImprove conversion efficiencyImprove power generation efficiencyWater-power plantsMachines/enginesHigh energyWater turbine
The invention discloses a dual-reservoir self-adjusting tidal power generation method and the system thereof. The tidal power generation system is composed of an upper reservoir, a water inlet gate of the upper reservoir, a pressure pipeline, a water-turbine generator set, a lower reservoir and a water outlet gate of the lower reservoir. The water inlet gate of the upper reservoir and the water outlet gate of the lower reservoir adopt the jacking-shaft type hydraulic power self-regulation gate, so that the upper reservoir can fully introduce the tidal water, and the lower reservoir can fully discharge the tail water of a power station; furthermore, the inertia rise and fall of the tide are utilized, thus keeping the working head of the water-turbine generator set to the maximum extent, thus effectively improving transformation efficiency by utilizing the tidal energy to generate power, and solving the problems with a tidal power station, such as sediment accumulation, etc. Compared with the previous tidal power generation system, the novel tidal power generation system has the advantages of high energy conversion efficiency, long service life, simple structure, convenient operation, all-weather continuous generation, saved investment, research and promotion value, etc.
Owner:ZHEJIANG UNIV
Tide operated energy system
InactiveUS20100052327A1Easy to operateEfficient productionFluid couplingsFinal product manufactureOperating energyPollution
I am the sole inventor of this tide water energy system. This energy source is inexpensive and sustainable. Tides are available the world over and should be utilized as a source of efficient, non-polluting energy.A horizontal power wheel of different sizes can be used to generate power to a vertical pump. A series of gear increasing systems will lift ocean water to a storage basin. Storage basin water is used to operate a turbine powered generator to produce electricity.A tide height of 4 feet or more will effectively power this system with no pollution.All materials for the use and manufacture of Tide Operated Energy System to be salt water compatible.
Owner:CAHILL JANET L
Ocean tidal energy telescoping cylinder water pump
ActiveCN103912469AIncrease profitReduce use costGeneral water supply conservationEngine componentsTidal waterWater desalination
The invention discloses an ocean tidal energy telescoping cylinder water pump. The ocean tidal energy telescoping cylinder water pump comprises a floater assembly, a telescoping cylinder and a lower base cylinder, wherein the floater assembly is arranged above the telescoping cylinder, the lower base cylinder is arranged below the telescoping cylinder and provided with a drainage outlet, the telescoping cylinder is composed of two flanges and a telescoping cylinder body, the telescoping cylinder body is arranged between the two flanges, the floater assembly is provided with a plurality of hollow upper floating barrels, and sea water can enter cavities of the upper floating barrels to support the weight of the floating barrels during tide falling. The ocean tidal energy telescoping cylinder water pump adopting the above structure can improve utilization rate of ocean tidal energy, is low in using cost and maintenance cost and widely applicable to ocean tidal water storage generation, sea water desalination, mariculture, seawater baysalt and the like.
Owner:马灼明
Vertical barrier fencing for containing contaminated materials, and use thereof
InactiveUS20110305517A1Protecting uncontaminated areaInstallation economyWater cleaningClimate change adaptationFiberMarsh
A system for separating contaminated materials from clean natural waterways and environmentally safe areas that thrive in wildlife breeding grounds, wetlands, marsh grass, natural vegetation, and wildlife habitats. The invention provides an effective and relatively inexpensive apparatus and process for hazardous material containment along shorelines, rivers, and estuaries (for maximum protection against contamination). Vertical erected fiber mesh filter fabric which allows clean water molecules to pass through but does not allow heavier / larger contaminated molecules to enter into uncontaminated areas, either from surface areas or subsurface areas. A floating boom acts as an oscillating scrub brush as tidal waters increase (rise) as well as an absorbent pad for the contaminated materials. One-way tidal doors allow juvenile sea life to naturally migrate to deeper safe havens with normal daily tidal changes.
Owner:BORRIES SAMUEL DOUGLAS
Air type tide generating method and special apparatus thereof
InactiveCN101000036ALower requirementWon't breakMachines/enginesWind motor combinationsControl mannerAir cavity
The present invention belongs to the field of electricity generating technology, and is especially one kind of airflow type tidal power generating method and equipment. The present invention features that one air cavity is set between the maximum water level and the minimum water level to collect air by means of the tide energy and air is controlled to exhaust out of the air cavity so as to drive the wind electricity generator. The airflow is controlled with valves. The present invention has simple control, low cost, environment friendship and other advantages.
Owner:庄石
Tapered helical auger turbine to convert hydrokinetic energy into electrical energy
ActiveUS20110085907A1Reduce turbulencePromote generationPropellersWind motor controlElectricityTidal water
A helical auger turbine and hydrokinetic device for use with electrical generators for producing electricity. A helical turbine blade may be mounted on a central shaft, and a flange extending perpendicularly to an edge of the turbine blade. The helical auger may be a multi-section auger having radial sections covering a radial arc of between 45 degrees and 180 degrees, and that are rotational molded with identical center sections. The auger may have tapered end sections. The radial and end sections may be interlockingly mounted onto the central shaft to enable the complete transfer of torque captured by the helical auger by a moving fluid media, such as a tidal water flow, to the central shaft. The adjacent surfaces of the radial and end sections may be flush with one another to reduce disruptions of the moving fluid flowing over the completed helical auger and rotating the assembled helical auger.
Owner:ANDERSON JR WINFIELD SCOTT
Method for recovering intertidal zone salt marsh wetland
ActiveCN105638015AGrow fastAchieve recoveryClimate change adaptationSoil-working methodsWater dischargeSalt marsh vegetation
The invention discloses a method for recovering intertidal zone salt marsh wetland. The method includes the steps that a recovery area suitable for wetland recovery and wetland vegetation growth is selected in an intertidal zone; an ecological dam is constructed on the outer edge of the recovery area, and a culvert pipe for communicating the recovery area with the sea area is mounted; part of substrate is dug in the recovery area to form a shallow pond, and part of the substrate is lifted up to form a plant growth area suitable for growth of salt marsh plants; wetland plants are planted in the plant growth area, the culvert pipe is closed in the planting state and the seedling stage, a water pump is utilized to inject water in the shallow pond into wetland in the recovery area, water discharged out of the wetland flows and returns the shallow pond, the wetland and the shallow pond form internal water circulation, and the low water level is maintained; when wetland plants are mature, the culvert pipe is opened, sea tide flow is introduced, tidal water level change is formed, a proper flooding-drying alternating habitat is provided for the formed salt marsh vegetation, and the recovery area is made to gradually recover to the salt marsh wetland. According to the method, earthwork balance, water quantity regulation and other technical means are utilized, the degraded intertidal zone is recovered, and structural and functional stability of a wetland ecological system is improved.
Owner:SHANGHAI WATERWAY ENG DESIGN & CONSULTING
Puer tea and fermenting method
InactiveCN103300176ASpeed up the fermentation processMellow tastePre-extraction tea treatmentFlavorTidal water
The invention belongs to the technical field of tea manufacture and discloses puer tea and a fermenting method. The fermenting method comprises the following steps that: (1) pile fermentation is carried out, wherein sunned raw tea is adopted as a raw tea material, and the initial pile height is controlled to be 30cm-45cm; (2) amino acid with the mass accounting for 0.3%-0.6% of that of the sunned raw tea is dissolved into tidal water for humidifying, and then the amino acid solution is uniformly sprayed on the tea material till the water content of the tea is 43%-48% through humidification of the tidal water; and (3) then fermentation is carried out in a fermentation box for 16-20 days, the pile is overturned once at an interval of 5-7 days in the fermentation process, and the fermented tea is flatly spread and is put at a shady and dry place for natural drying. The puer tea prepared by the fermenting method has the obvious characteristics of high-quality puer tea, such as short fermenting time, pure and full taste and red and bright color, and also has the characteristic of special flavor of puer tea.
Owner:SOUTH CHINA UNIV OF TECH
Portable boat mooring system and method
InactiveUS20060060124A1Avoid damageProtection from damageWaterborne vesselsTidal waterMarine engineering
A boat mooring system provides protection for moored boats in tidal waters. The system can be used with existing pilings and existing mooring lines and allows the moored boat to rise and fall with the tide which preventing horizontal movement thus preventing the boat from contacting the pier. The system includes rollers and spacers placed on the mooring line to allow movement of the mooring line along a piling.
Owner:DICAMPLI NICHOLASC
Method for planting suaeda salsa in coastal beach and application
ActiveCN111373995AExpand the scope of plantingHabitat expansionPlant cultivationCultivating equipmentsTidal waterIntertidal area
The invention belongs to the technical field of plant planting and discloses a method for planting suaeda salsa in a coastal beach and an application. The method comprises the steps of 1, planting area selection, selecting an area suitable for planting from a mid-tide area and a high-tide area of an intertidal zone and building a wave blocking zone; 2, seeding, namely selecting temperature, seeding rate and seeding time; and 3, management after seeding, namely carrying out net covering, diversion and drainage for preventing flooding. The step 1 specifically comprises the content of selecting the area suitable for planting from the mid-tide area and the high-tide area of the intertidal zone; building the water blocking zone in a tidewater entering direction and building a dam in an offshoredirection in the planting area; or planting phragmites australis, high-stalk straws and phyllostachys pubescens in the tidewater entering direction in the planting area. According to the method, thesuaeda salsa is planted in a suitable environment on the beach, so that the growth area of the suaeda salsa is increased, the growth environment of the suaeda salsa on the beach is repaired and a support is provided for the stabilization of the biological diversity on the beach.
Owner:江苏盐城国家级珍禽自然保护区管理处
A tidal current energy generating device
InactiveCN102261305ASimple structureLow costMachines/enginesEngine componentsEngineeringTorsion spring
The invention discloses a tidal current energy generating device, which comprises a generator set on a riverside or seaside platform, a water surface buoyancy tank floating on a tidal river or sea surface, one end of a rope is connected with the water surface buoyancy tank, and the other One end is wound on the reel through a fixed pulley fixed in the river or sea; one end of the reel is connected to the generator through an overrunning clutch, and the other end is connected to one end of the torsion spring; the other end of the torsion spring fixed on the foundation. The invention can utilize the inexhaustible huge tidal current energy of rivers and seasides to generate power, has simple structure, low cost, and no pollution, and is suitable for occasions without time requirements such as seawater desalination, and can also be configured with energy storage converter or supply power to the grid through a transformer.
Owner:SHAOXING UNIVERSITY
Cloud platform-based mangrove forest remote sensing rapid and accurate extraction method
InactiveCN114266958AGet it quickly and accuratelyAvoid difficultiesImage enhancementImage analysisVegetationTidal water
The invention discloses a mangrove forest remote sensing rapid and accurate extraction method based on a cloud platform, and relates to the field of mangrove forest distribution diagram manufacturing, and the method comprises the steps: firstly, screening Sentinel-2 images with good quality through a Google EarthEngine cloud platform, and forming an image set; calculating a vegetation index NDVI of each image in the image set to obtain an NDVI image in space; forming a low-tide image formed by the maximum NDVI pixels; erasing an area without vegetation by using a mask function; utilizing an MFVI index to identify mangrove forest space distribution information; and erasing a non-mangrove forest region by using a mask function to obtain a spatial distribution diagram of the mangrove forest. According to the method, the difficulty of mangrove forest remote sensing interpretation caused by periodic tidal water submerging is overcome, and the problems that the submerged mangrove forest is missed to be painted and inland vegetation is wrongly divided into mangrove forests are solved. The mangrove forest interpretation method is fast and effective, improves the precision and credibility of mangrove forest interpretation, and has repeatability and robustness.
Owner:CHINA FORESTRY STAR BEIJING TECH INFORMATION CO LTD
Device and method for disposing river sewage through wind and tidal power generation and water storage drainage
ActiveCN104746475AEasy to implementNo pollution in the processBarrages/weirsEnergy industryTidal waterWater storage
The invention discloses a device and method for disposing river sewage through wind and tidal power generation and water storage drainage. The device comprises water storage gates and a high-position water storage platform. The high-position water storage platform is provided with a high-position water storage pool and a control room. The water storage gates comprise the first water storage gate, the second water storage gate, the third water storage gate, the fourth water storage gate and the fifth water storage gate. The fifth water storage gate is connected with a wind and tidal power generation device. The high-position water storage pool is connected with a water drawing pipe. The water drawing pipe is connected with a tidal water storage unit. The method for disposing river sewage through wind and tidal power generation and water storage drainage includes the procedure of high-position water storage platform and high-position water storage pool construction, water storage gate installation, wind and tidal power generation device and power generator set installation, tidal water storage unit installation, wind and tidal power generation device power generation and energy storage, tidal water storage unit water storage conducted for the high-position water storage pool, river upstream guidance of water in the high-position water storage platform, river floating object disposal, and river suspended object disposal.
Owner:ZHEJIANG UNIV OF WATER RESOURCES & ELECTRIC POWER
Tidal river reach fishway inlet design method and fishway inlet
ActiveCN106759164AImprove fish passing efficiencyReduce barrier effectGeometric CADWater resource protectionEcological environmentEngineering
The invention relates to a tidal river reach fishway inlet design method and a fishway inlet. The method comprises the steps of: typical tide process selection; tide level calculation; fishway inlet section hydraulic characteristic calculation; fishway inlet arrangement and water level design; and fishway inlet parameter determination. The method builds a flux and reflux model of a tidal river reach by tide current principles and tidal river reach hydraulic characteristics, calculates various types of tidal ranges and the tide level change conditions through the model, calculates and determines optimal fishway inlet positions of various tide levels to adapt to the flows, the flowing directions and the water level changes of different tide currents through the fishway inlet section hydraulic characteristics, improves the fishway fish passing efficiency, reduces the influence on fish stop by the hydraulic engineering construction, and achieves important significance on protection or repair of the river ecological environment.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Deposition promotion dyke and deposition promotion method for reclaiming land from sea by building dykes
InactiveCN103953003AAvoid the problem of being easily carried away by the tideEfficient use ofDamsClimate change adaptationTidal waterEngineering
Owner:SECOND INST OF OCEANOGRAPHY MNR
Mudflat wind electric field fan foundation structure
InactiveCN101324061ASmall amount of workImprove economyArtificial islandsUnderwater structuresTidal waterBarrel Shaped
The invention relates to a fan foundation structure in the beach wind power field, mainly comprising a fan foundation upper bearing platform, a barrel-shaped foundation structure type formed by the surrounding wave walls and a drainage facility which is arranged on the foundation surface and drains the water from interior to the exterior. The top surface elevation of the fan foundation can be appropriately lifted up according to the elevation of beach surface; the wave walls which are arranged around the foundation are used for retaining the tidewater, so as to ensure that the fan tower frame steel structure is not soaked and corroded by the seawater. During the construction of the fan foundation, the foundation construction difficulty is reduced owing to the small elevation difference of the casting surface and the beach surface; after the existing beach surface is locally levelled and structurally disposed, a fan hoisting platform can be directly formed, thus reducing the engineering quantity of cubic metre of earth and stone of the fan hoisting platform, saving the engineering investment and shortening the construction period; on the fan hoisting aspect, as the hoisting platform is basically flush with the fan foundation surface, the fan foundation structure has the advantages of smaller hoisting height, convenient hoisting, and low hoisting expense, etc. compared with the existing beach fan foundation types.
Owner:SHANGHAI INVESTIGATION DESIGN & RES INST
Semi-floatation-condition work method for offshore self-elevating type work platform
The invention relates to a semi-floatation-condition work method for an offshore self-elevating type work platform. The semi-flotation condition work method includes the following steps that semi-floatation-condition work conditions are determined, a semi-floatation-condition work pile leg loading curve is mapped according to a tidal table of the location of a work project and a draught-buoyancy curve chart in a stability calculation report, and the draught upper limit Dh and the draught lower limit Dl under the semi-floatation-condition work lifting condition are determined; a semi-floatation-condition work ship body lifting plan is scheduled according to the weather change trend and the tidal water change trend and with the combination of the semi-floatation-condition work pile leg load curve, and the draught can be maintained between the draught upper limit and the draught lower limit; ship lifting work is conducted, and leveling and prepressing can be conducted at the center position between the draught upper limit and the draught lower limit; and lifting work is conducted, wherein the lifting and ship body lifting construction work sequence is arranged, a ship body is lifted so that the draught of the ship body can be maintained between the draught upper limit and the draught lower limit, and it is ensured that the pressure of a pile leg over the ground is in the allowed range. Platform environment loads of various time points of tidal changing are taken into consideration.
Owner:HUADIAN HEAVY IND CO LTD
Device for simulating coast reservoir pollutant migration and use method of device
The invention discloses a device for simulating coast reservoir pollutant migration and a use method of the device. The device comprises a planar water trough, a fresh water supply system, a saline water supply system, a base flow simulation system, a sampling system and a tidal wave generator, wherein the fresh water supply system is connected with the head of the planar water trough; the salinewater supply system is connected with the tail of the planar water trough; the sampling system is connected with the body of the planar water trough; the base flow simulation system is positioned at the bottom of the planar water trough; the tidal wave generator is connected with the tail of the planar water trough. Compared with the prior art, migration of coast reservoir pollutants can be precisely simulated, not only are variable levels of fresh water and saline water monitored in real time, but also water inside the water trough is sampled in real time under a condition that a good overallsimulation environment is ensured, and migration rules of the pollutants at different flows, water levels and tidal water heads can be detected.
Owner:HOHAI UNIV
Vertical circulating water tank for water turbine test
The invention discloses a vertical circulating water tank for water turbine test. The water tank comprises a drainage section and a work section. A first vertical water flow section and a second vertical water flow section are arranged between the drainage section and the work section. A water driving mechanism is arranged between the drainage section and the first vertical water flow section. The work section is connected with the second vertical water flow section through a trapezoidal water inlet. The water tank can provide a relatively stable water flow. By combining the water tank with tidal water turbine test, the experiment process is simplified, and an accurate experiment result is easier to obtain.
Owner:TIANJIN UNIV
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