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2117results about "Hydraulic engineering apparatus" patented technology
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Process to obtain water bodies larger than 15,000 m3 for recreational use with color, transparency and cleanness characteristics similar to swimming pools or tropical seas at low cost
The invention discloses a process to implement and maintain water bodies larger than 15,000 m3 for recreational use, such as lakes or artificial lagoons, with excellent color, transparency and cleanness properties at low cost, which comprises the following steps:a.—providing a structure able to contain a large water body larger than 15,000 m3;b.—feeding the structure of step (a) with inlet water having iron and manganese levels lower than 1.5 ppm and turbidity lower than 5 NTU;c.—measuring water pH, ideally it should be within a range lower than 7.8;d.—adding an oxidizing agent to the water contained in the structure of step (a), with which a 600 mV minimal ORP is controlled in water for a minimal period of 4 hours and in maximal cycles of 48 hours;e.—adding a flocculating agent in concentrations within 0.02 and 1 ppm with maximal frequencies of 6 days and cleaning the bottom of the structure of step (a) with a suction device to remove precipitated impurities from the bottom of said structure, together with the additional flocculants and;f.—generating a displacement of surface water containing impurities and surface oils by means of the injection of inlet water according to step (b), which generates said displacement in such a way to remove said surface water by means of a system for impurities and surface oils removal arranged in the structure of step (a), which together with step (e) replaces traditional filtering.The present invention also discloses a structure to contain large water bodies comprising a system for the removal of impurities and surface oils by means of skimmers and the suction device to clean said structure.
Owner:CRYSTAL LAGOONS TECH INC
Stereo in-situ ecological urban water system repairing process
InactiveCN101021062AControl survivalPurify waterEnergy based wastewater treatmentHydraulic engineering apparatusMicrobial inoculationConstructed wetland
The stereo in-situ ecological urban water system repairing process tackles polluted water via the quantitative analysis on the water. The technological scheme includes physical simulation and mathematic model analysis, microbe inoculation and culture, constituting refluxing ecological filter bed, purification with biocarrier, artificial aeration, purifying upper water, pre-treatment in the blow down port, establishing water ecological system balance, perfecting water environment data, etc. The present invention realizes the comprehensive tackling of urban water system.
Owner:上海中渠生态环保科技有限公司
Process to maintain large clean recreational water bodies
Owner:CRYSTAL LAGOONS TECH INC
Analysis and evaluation method for inrush mountain torrent disasters of regions without data
The invention discloses an analysis and evaluation method for inrush mountain torrent disasters of regions without data, and relates to the field of mountain torrent disaster analysis and evaluation. The method comprises the steps that the basic information of a project area is obtained; the landform, the river position form and the flood control current situation of an evaluated object are obtained; the catchment area and runoff components of the dike confluence drainage basin of each small watershed in the obtained evaluated object are determined; rainstorm parameter calculation, rainstorm calculation and concentration-time-based rainstorm time interval distribution of the evaluated object are obtained; flood calculation is designed, and the water level and flow relation of a riverway section, prone to inrush, of the evaluated object is obtained; the riverway flood control current situation in the evaluated object is determined, and accordingly danger zone grade division is conducted; and an early warning point is established, the early warning water level of the analyzed and evaluated object is determined, and the early warning index of the analyzed and evaluated object is formulated. According to the analysis and evaluation method, the inrush mountain torrents serves as the main analyzed and evaluated object, and a current riverway flood control current situation evaluation method and an early warning index analysis method are provided.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Plain river network area surface source pollution reinforced depuration prepositive library system
InactiveCN1621622ASolve the problem of runoff collection into the reservoir areaEfficient removalMultistage water/sewage treatmentHydraulic engineering apparatusRiver networkGrating
The present invention discloses one kind of reinforcing purifying pre-reservoir system for treating the plain river network area. The reinforcing purifying pre-reservoir system includes four parts: surficial runoff colleting and regulating subsystem; depositing plant grating subsystem; reinforcing purifying ecological permeable dam subsystem; and pre-reservoir area. The said four parts are connected successively to form one complete reinforcing purifying pre-reservoir system for treating the plain river network area. The system can eliminate N and P containing nutritive salts, suspended solid and one pollutant from surficial runoff and other pollution sources to reduce pollution load. The present invention can reach the target of eliminating TN in 60 %, TP in 70 % and SS in 80 %, and the technology may be used in plain river network area.
Owner:国家环境保护总局南京环境科学研究所
Ballast and process for the production of ballast
The present invention relates to ballast which have a high stability and a long service life and to a process for the production of ballast. These ballast are suitable for railway track laying and road construction and dike systems used for example in costal protection. These ballast comprise ballast stones and polyurethane foams based on a reaction mixture of selected polyisocyanates and selected compounds with isocyanate-reactive groups.
Owner:COVESTRO DEUTSCHLAND AG
Storm water treatment apparatus employing dual vortex separators
ActiveUS20050184007A1Avoid backupImprove liquidityReversed direction vortexLiquid displacementSuspended particlesEddy current separator
A stormwater treatment device for removing floatables, solids and suspended particles and the like from stormwater run off, whereby a removable assembly is provided for installation into a manhole basin, the assembly including a pass-through member which receives stormwater from an incoming drainage system, and diverts low flows to at least one or more vortex separators, while allowing for high flows to bypass the separators and flow through the assembly untreated to exit the basin without diversion.
Owner:OLDCASTLE PRECAST
Support struts for mobile working machines and mobile concrete pump with said support struts
InactiveUS6840540B2Improvement of support strut stance stabilityReduce frictionVehicle fittings for liftingVehicle cleaning apparatusHydraulic cylinderAxial distance
A support strut for mobile working machines, especially for mobile concrete pumps. The support strut (20) has a strut body (38) that can be pivoted around a vertical pivoting axis (32) on a chassis (10), a telescopic part (40), a dual-acting hydraulic cylinder (42) (38) and the telescopic part (40), in addition to a foot part (26) that. Both ends of the telescopic hydraulic cylinder (42) are fixed on fixing points (46, 50) in the area of the opposite ends of the body of the strut (39 / 8) and the telescopic part (40). The vertical pivoting axis (32) is defined by a divided bearing or journal location arranged at an axial distance (S) from the inboard fixing point (46) in the direction of the foot part on the body of the boom (38), said location being positioned in such a way that it transects the displacement axis (52) of the hydraulic cylinder (42) transversely.
Owner:PUTZMEISTER ENG
Sewage treatment method for construction wetland of ditch and river bank
InactiveCN1546796AGive full play to the decontamination functionImprove material production capacityHydraulic engineering apparatusHorticulture methodsConstructed wetlandNatural ecosystem
The invention belongs to ecological condition project and hydraulic engineering technology field. It is based on indigene species, keeps the principle of 'from nature, excelled nature' to carry on ecology design, the designed groove, canal, river, bank, constructed swamped land, waste water processing system, and has merits of waste water process, greening and bank protection, beatifying landscape and continuous resources. Through constructing nature simulating ecological system, it can display the waste eliminating function of constructed swamped land system fully, but also it can upgrades material producing ability, and the cost is low, easy to be operated, the area is small.
Owner:NANJING UNIV
Motion compensation system and method
ActiveUS20050129464A1Convenience to workProvide compensationDrilling rodsHydraulic engineering apparatusOcean bottomEngineering
A system for providing motion compensation of a platform attached to an ocean floor. The platform is operatively associated with a riser extending from a subterranean well. The system comprises a frame member positioned on the platform and a deck slidably attached to the frame member, and wherein the deck is attached to the riser. The system further comprises a moving device for moving the frame member relative to the deck. In one of the preferred embodiments, the frame member contains a plurality of guide post and wherein the deck is slidably mounted on the guide post so that the frame member is movable relative to the deck. The moving device may comprise a cylinder member operatively attached to the frame member and a piston operatively attached to the deck and wherein the system further comprises a pressurized recharging vessel configured to direct a pneumatic supply to the cylinder member, and a gas delivery mechanism for keeping the cylinder member within a pressure range. A method of compensating for movement on an offshore platform during well operations is also disclosed.
Owner:DEVIN INT
Reservoir group combined operation scheduling system and method for improving river and lake relationship
ActiveCN103679285AOvercoming the Insufficiency of Water Volume RegulationGuarantee the need for water for ecological environment protectionForecastingWater resource assessmentOperation schedulingInformation transmission
The invention discloses a reservoir group combined operation scheduling system and method for improving a river and lake relationship. The system is characterized by comprising a hydrological information acquisition module, a reservoir working condition access module, an information transmission module, a data preprocessing module, a river and lake relationship scheduling and decision-making module and a display terminal module. By the system and method, shortcomings of an existing reservoir scheduling technique are overcome so as to realize the objective of benefiting both rivers and lakes, the river midstream-upstream and river-communicated lake reservoir group combined operation scheduling system and method is in favor of improving the river and lake relationship, multi-objective optimal regulation and control is carried out aiming for controlled hydrology and water ecological parameters for representing the river and lake relationship, and cross-basin, multi-objective and integrated water conservancy project group remote combined regulation and control in favor of improving the river and lake relationship is realized.
Owner:HOHAI UNIV +1
Marine water conversion
InactiveUS20070084768A1Reduce surface temperaturePromote formationFog dispersionSedimentation separationMarine engineeringSurface water
A marine water conversion apparatus capable of pumping ocean surface water several hundred feel below the surface to cause sufficient cooler water to rise to the surface to prevent formation of or to moderate hurricanes. The apparatus is remotely controlled and includes a propulsion system for moving it to a new location or in predetermined patterns through use of a global positioning system and computerized controls. Power for driving the pumps may be provided by a wind turbine driven electric generator at the upper end of an upper tube section pivotally connected to a float tank on a vertical axis.
Owner:BARBER GERALD L
Boom system and its use to attenuate underwater sound or shock wave transmission
InactiveUS6567341B2Minimize dissipationGood curative effectDefensive equipmentBarrages/weirsShock waveSystems design
The present invention relates to methods of attenuating underwater transmission of sound or shock waves as well as boom systems designed for such use. The boom system is characterized by a material (e.g., curtain or combination curtain and skirt) which extends substantially the entire water column when placed in a body of water, thereby defining a perimeter and a gas injection system which includes a plurality of outlets which are positioned between the perimeter and the site of underwater activity. In use, the boom system is installed such that it surrounds the site of underwater activity and then gas is injected into the water through the plurality of outlets to form a gas curtain during performance of an underwater activity capable of generating sound or shock waves.
Owner:GUNDERBOOM
Electric fish barrier for water intakes at varying depths
ActiveUS6978734B1Effectively control the motion of fishPisciculture and aquariaHydraulic engineering apparatusWater flowElectric fish
An electric fish barrier for deterring fish from entering a water intake in a reservoir or along a waterway has a set of conductive members at a first voltage potential and a second set of conductive members at a second voltage potential. The conductive members are disposed on support piles extending up from the bottom of the reservoir. Each conductive member extends vertically between a pre-determined range of depths from an upper depth to a lower depth, forming a contiguous voltage gradient between the two sets of conductive members. Fish are drawn to the attraction flow of water flowing into the intake. The two sets of conductive members are oriented such that the attraction flow passes through the contiguous voltage gradient, thereby deterring the fish from following the attraction flow into the water intake.
Owner:SMITH ROOT
Multiple points settlement observation method and device therefor
InactiveCN101016733AMonitoring layer settlementLow costBarrages/weirsRoadwaysMultiple pointObservation method
The invention discloses a method for checking artificial embankment body and foundation sink. The method comprises that embedding a deep sink detector and a shallow sink detector with hollow tubular structures in each checking layer along one normal line at object position in the artificial embankment body, and leading measuring device or measuring medium into a measuring channel formed by the shallow sink detector and a connecting tube, to measure the position change of the shallow sink detector and measure the height strike of the upper end of the connecting tube to find out the sink of each checking layer.
Owner:NORTHWEST RES INST CO LTD OF C R E C
Multi-model meta-synthesis flood forecasting system and forecasting method thereof
InactiveCN101864750AQuick buildQuick decisionClimate change adaptationHydraulic engineering apparatusFlood forecastBusiness forecasting
The invention discloses a multi-model meta-synthesis flood forecasting system which comprises a data integration module, component integration module, model integration module, scheme integration module and a result publishing module, wherein the data integration module, the component integration module, the model integration module, the scheme integration module and the result publishing module are sequentially connected. The invention also discloses a method for flood forecast by utilizing the multi-model meta-synthesis flood forecasting system, comprising the following steps of unifiedly treating historical or real-time hydrological data through the data integration to enable the hydrological data to accord with the use specifications and the requirements of the component integration; packaging each set of obtained data into a plurality of components according to the needs of a constructed framework; obtaining a plurality of flood forecasting models by respectively setting up the plurality of components on the basis of the structure requirements of the models and obtaining corresponding flood forecasting results; obtaining a final forecasting result and a final forecasting scheme by treating the plurality of flood forecasting results in a unified way; and publishing the final result. The method realizes rapid setting up of various flood forecasting models and can provide a plurality of schemes and scheme optimizations.
Owner:XIAN UNIV OF TECH
Method of installation of a tension leg platform
InactiveUS20040190999A1Provide stabilityReduce relative motionDrilling rodsHydraulic engineering apparatusInstabilityTendon
A method and system for attaching a TLP to its tendons using pull-down lines to rapidly submerge the hull to installation draft while compensating for inherent hull instability during submergence and to provide motion arrest and aid in station keeping. The system includes tensioning devices mounted on the TLP, usually one for each tendon. Each tensioning device is equipped with a pull-down line which is connected to the corresponding tendon. The TLP hull is submerged to lock-off draft by applying tensions to the pull-down lines connected to the top of the tensions, or by a combination of applying tensions to the pull-down lines and ballasting the hull. As the tensioners take in pull-down line, the hull submerges, i.e. the draft increases. After lock-off, high levels of tension in the pull-down lines can be rapidly transferred to the connection sleeves by slacking the pull-down lines, thus allowing the TLP to be made storm-safe much faster than by prior art methods which require de-ballasting to tension the tendons. In concert with TLP installation, the method may be used attach the mooring tendons to the seabed by suspending and lowering the tendons into their foundation receptacle in the seabed.
Owner:MODEC INT L L C +1
Temperature control and crack prevention design calculating method used for lining concrete of door-opening-shaped section structure
ActiveCN105672187AThe calculation formula is simpleQuick calculation of maximum temperatureGeometric CADHydraulic engineering apparatusTemperature controlFinite element method
The invention discloses a temperature control and crack prevention design calculating method used for lining concrete of a door-opening-shaped section structure. The method comprises the following steps of (1) determining a temperature control and crack prevention target, (2) calculating the permitted maximum temperature and (3) making a temperature control scheme, specifically, the maximum temperature inside the concrete is calculated, and on the premise that the worked-out maximum temperature is smaller than or equal to the permitted maximum temperature, the temperature control and crack prevention scheme is designed. The calculation formula of the method is simple, the influences of surrounding rock performance, the lining structure size, concrete strength, intro-opening air temperature, water-introducing cooling and water temperature thereof, pouring temperature and the like can be reasonably reflected, the permitted maximum temperature of pouring construction each month in the construction period of the lining concrete of the door-opening-shaped section structure can be rapidly calculated, the maximum temperature inside the lining concrete is calculated rapidly for different temperature control schemes, and a temperature control and crack prevention construction scheme suitable for a project is provided under the conditions that the inside maximum temperature is smaller than or equal to the permitted maximum temperature and economy is achieved. The error is smaller than 3% compared with the simulation calculation result of a finite element method, and the temperature control and crack prevention design calculating method is particularly suitable for optimization and adjustment of primary design and an on-site construction scheme.
Owner:WUHAN UNIV
Gas diffuser ocean water lifting method and device
A variety of devices capable of bringing ocean water from a considerable depth to the surface using airlift systems. A bubble of air released in the ocean will rise to the surface. If a gas diffuser is employed to release millions of bubbles of air, the rising cloud of bubbles will entrain the surrounding water and pull it toward the surface.
Owner:HOFER KURT G +1
Packaged technology for underwater in situ automatically monitoring
ActiveCN101037864ASmooth and convenient in-situ monitoringShorten the timeArtificial islandsFoundation testingPore water pressureEarth surface
An in-situ automatic monitoring complete technology method for an underwater groundwork comprises a section surface subsidence monitoring method by multiple fixed inclinometers; a multipoint hydraulic difference surface subsidence monitoring method; a layered soil mass subsidence monitoring method; a pore water pressure monitoring method; and a horizontal and vertical displacement monitoring method; an automatic monitoring technology with a monitoring and control system disposed in the deep water sea bottom for long period. The invention can successfully and conveniently perform the in-situ monitoring of the underwater groundwork without disposing waterborne bases, arranging maritime platforms and passing through buildings; can perform full-course monitoring on the engineering, perform underwater automatic monitoring and real-time monitoring data transmission, in particular monitor continuously in the typhoon period; the automatic monitoring can save monitoring workers and cruise time; the automatic monitoring instruments are all disposed underwater, thereby having little influence on construction and decreasing instrument damage rate; the automatic monitoring can perform on-time on-point test to eliminate man-made reading error, and make the reading accurate, quick and precise.
Owner:TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG +1
Integral drip irrigation emitter with an easy spreadable exit pool
ActiveUS20150201568A1Reduce areaPromote disseminationClimate change adaptationWatering devicesDrip irrigationOutfall
An integral, discrete, drip irrigation emitter that comprises means for facilitating spreading of its water exit “pool” U configured, in cross section, “legs”, so that after affixing the drip emitter onto the inner wall surface of the hose, and following water pressure increase within the hose, an elastic movement of a sector of the hose's wall that is framed and delineated as a consequence of affixing the circumferential rim of the exit pool onto the inner wall of the hose, will take place onto opening a water outlet opening, and from the time the water pressure in the hose decreases, closing of the water outlet opening would occur, and a drip irrigation hose embedding at least one such emitter in it, and a general method for opening and closing water outlet openings in such hose, wherein the opening and closing is performed in accordance with and in correlation to the water pressure prevailing in the hose.
Owner:RIVULIS IRRIGATION
Mobile wind-driven electric generating systems and method and apparatus
InactiveUS20050260040A1Automatically and easily jacked up hydraulicallyContinuous motionArtificial islandsDrilling rodsElectricityWind driven
A wind-driven source of electricity can be located and oriented to take advantage of winds traveling over water. A structure is provided that can be transported over water and carry one or more wind-driven sources of electricity and structure-supporting means for engaging the earth's surface under water. The structure is transported to an advantageous location for operation of the wind-driven sources of electricity; the structure supporting means is engaged with the earth's surface under water at the advantageous location; and the one or more wind-driven sources of electricity can be elevated to take advantage of the winds traveling over the water.
Owner:INGLE JAMES E
Composite unit for restoration of landscape water body
ActiveCN103626355ADoes not affect flood dischargeImprove water purification efficiencyMultistage water/sewage treatmentHydraulic engineering apparatusFiltrationWater quality
The invention discloses a composite unit for restoration of a landscape water body. The composite unit at least comprises a water quality regulating zone, a filtration and sewage interception zone, an emergent aquatic plant arranging zone, a waterfall reoxygenation zone, an artificial floating island arranging zone, a base and a connecting pipe, wherein the water quality regulating zone is fixed on the filtration and sewage interception zone in an embedded mode, the middle of the emergent aquatic plant arranging zone is provided with a diversion table, the upper part of the diversion table is used for supporting the filtration and sewage interception zone, the filtration and sewage interception zone, the diversion table, the waterfall reoxygenation zone, the artificial floating island arranging zone and the base are respectively provided with a first center hole, a second center hole, a third center hole, a fourth center hole and a fifth center hole, and the connecting pipe passes through the first center hole, the second center hole, the third center hole, the fourth center hole and the fifth center hole to allow the filtration and sewage interception zone, the emergent aquatic plant arranging zone, the waterfall reoxygenation zone, the artificial floating island arranging zone and the base to be fixedly connected from top to bottom. The composite unit has the advantages of high water purification efficiency, no generation of secondary pollution, simple and convenient construction and maintenance, low investment cost and a small occupied water area.
Owner:JIANGSU ZHONGYI HUANKE WATER BODY REMEDIATION +1
Method of determining downstream design flood of cascade reservoirs
ActiveCN103276686AReflect flood control effectClimate change adaptationHydraulic engineering apparatusDesign floodMulti dimensional
The invention belongs to the field of flood control safety design of reservoirs, and relates to a method of determining downstream design flood of cascade reservoirs. The method comprises the following steps that by the adoption of the Copula function, multi-dimensional simultaneous distribution of the section flood volume and the regional flood volume of the reservoirs is constructed, the explicit expression of a conditional probability function is deduced, the frequency curve of the conditional probability is dispersed, and according to the principle of probability combination discrete summation, the design value and the corresponding probability of the annular maximum peak discharge of downstream sections are determined after flood regulation is conducted through the cascade reservoirs. The method can overcome the defects of traditional determination technologies of the design flood of the cascade reservoirs, and provides more comprehensive reference information for cascade planning and development of drainage basins.
Owner:WUHAN UNIV
Fire simulation experiment equipment for caverns in hydraulic and hydro-power engineering and simulation experiment method
ActiveCN101914904AEasy to adjustGood experimental repeatabilityHydraulic engineering apparatusEducational modelsUnderground cavernControl engineering
The invention relates to fire simulation experiment equipment for caverns in hydraulic and hydro-power engineering. The equipment comprises a cavern simulation system, a fire source system, a ventilation and smoke discharge system, a detecting and warning system and a measurement, collection and data analysis system, wherein the cavern simulation system is used for simulating a three-dimensional restricted space of fire generation; the fire source system is used for simulating different fire scenes and can be arranged at any position in the constituent parts of the cavern simulation system; the ventilation and smoke discharge system is used for simulating ventilation and smoke discharge in the cavern; and the detecting and warning system is used for detecting, identifying and warning on the fire inside the cavern simulation system; and the measurement, collection and data analysis system is used for measuring, collecting and processing data, comparing and analyzing experimental data and forecasting and estimating an accident. The equipment and the method of the invention can be used for carrying out experimental study on generation and development mechanism, ventilation, smoke discharge, control and prevention of the cavern fire in the hydraulic and hydro-power engineering, and providing reasonable and correct scientific proofs for engineering design and operation of underground caverns construction and fire safety of construction.
Owner:CHINA ACAD OF SAFETY SCI & TECH
Semi-submersible offshore vessel
ActiveUS20050058513A1Reduce the excitation forceIncrease the exciting forceDrilling rodsHydraulic engineering apparatusPontoon bridgeBoard structure
A semi-submersible offshore vessel (1) exhibiting a first end (2), for example constituting the forward end of the vessel, and a second end (4), for example constituting the aft end of the vessel (1), or vice versa, wherein the vessel (1) includes a substantially rectangular ring-pontoon (6) including a first transverse pontoon section (10) located at the first end (2) of the vessel (1); a second transverse pontoon section (12) located at the second end (4) of the vessel (1), the second transverse pontoon section (12) being parallel to the first transverse pontoon section (10), the ring-pontoon (6) further including two mutually parallel longitudinal pontoon sections (14) extending between the first (2) and the second end (4) of the vessel (1); at least four support columns (16, 18, 20, 22) extending upwardly from respective edge-portions (23) of said ring-pontoon (2), the support columns (16, 18, 20, 22) being arranged in a first column pair (24) located at the first end (2) of the vessel (1) and a second column pair (26) located at the second end (4) of the vessel (1); and an upper deck structure (28) positioned upon the support columns (16, 18, 20, 22). The first transverse pontoon section (10) may also include a vertical mean cross-section area (A) which exceeds the corresponding vertical mean cross-section area (B) of the second transverse pontoon section (12), and the support columns (20, 22) in the second column pair (26) each has a water-plane area (E) which exceeds the water-plane area (D) of each of the support columns (16, 18) in the first column pair (24).
Owner:GVA GONSULTANTS
Integrated system for lakefront incipient rainwater collection, diffluence and ecological purification
InactiveCN1635227AEfficient separationAvoid pollutionHydraulic engineering apparatusWater/sewage treatment by flocculation/precipitationConstructed wetlandEngineering
The invention relates to an early stage rain-water collecting and diverting ecological purification integrated system used for lakesides, laying rain-water collecting pipe and filling ecological gravels in the rain-water entrapment trench, The water collected by the collecting pipe is transported into rain-water diverting well, diverting the water by the inlet pipe and outlet diverting pipe with the same height and diameter, and than transferred to four grade artificial wetland of 'coarse gravel-zeolite-functional stuffing-fine gravel' for stage ecological purification by adjusting the cloth water pipe laid on the bottom, and transported into lake again after purification. The invention can purify the heavily polluted early stage hard rain without effecting the ecological landscape.
Owner:北京铭泽源环境工程有限公司
Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water
ActiveUS7517460B2Damage to flotationDamage to partsTreatment using aerobic processesFlow mixersAmmonia-oxidizing bacteriaWater cycling
A circulation system for bodies of water. In one set of embodiments for larger bodies of water, modified horizontal plate designs are provided at the entrance of the draft hose. The plate designs have sections that pivot downwardly as the flotation platform and depending draft hose are rapidly raised in high wave conditions to let the water escape downwardly out of the hose. Adaptations to the floats for the elongated arms of the platform are also made to essentially eliminate the creation of any damaging torques on them from high waves. Another set of embodiments are particularly adapted for smaller systems in municipal water tanks for thorough mixing of the water and treatment to kill undesirable ammonia oxidizing bacteria and prevent or at least inhibit their return.
Owner:IXOM OPERATIONS
Motion compensation system and method
InactiveUS6929071B2Satisfy safety performance requirementsProvide compensationDrilling rodsHydraulic engineering apparatusOcean bottomEngineering
A system for providing motion compensation of a platform attached to an ocean floor. The platform is operatively associated with a riser extending from a subterranean well. The system comprises a frame member positioned on the platform and a deck slidably attached to the frame member, and wherein the deck is attached to the riser. The system further comprises a moving device for moving the frame member relative to the deck. In one of the preferred embodiments, the frame member contains a plurality of guide post and wherein the deck is slidably mounted on the guide post so that the frame member is movable relative to the deck. The moving device may comprise a cylinder member operatively attached to the frame member and a piston operatively attached to the deck and wherein the system further comprises a pressurized recharging vessel configured to direct a pneumatic supply to the cylinder member, and a gas delivery mechanism for keeping the cylinder member within a pressure range. A method of compensating for movement on an offshore platform during well operations is also disclosed.
Owner:DEVIN INT
Method for estimating ecological water amount of shallow lake under pollution stress
InactiveCN101858065AThe results of ecological water demand estimation are comprehensivePracticalHydraulic engineering apparatusStream regulationTreatment levelInflow rate
The invention provides a method for estimating the ecological water amount of a shallow lake under the pollution stress. The method comprises the following steps of: firstly, selecting a key ecological index and determining the ideal ecological water amount by adopting an ecological water level method; secondly, determining an important water quality index by means of a principal component analysis method and building a model of water quality simulation; thirdly, adopting a scenario analysis method on the base, i.e., stimulating the water environment information under different conditions through setting a certain combine scenes (including management objective, wastewater treatment level, conditions of inflow rate, conditions of outflow rate and the like); and finally, comprehensively determining the ecological water amount of the lake under the pollution stress by combining different management requirements and ecological water levels. The action of pollution stress in the current situation is fully considered, the water quality model is coupled to the evaluation for the ecological water amount of the shallow lake, the ecological water amount of the shallow lake is estimated from water quality and water amount demand, so that the ecological water amount is more effectively applied to the actual water resources allocation, and the practicability of the method for estimating the ecological water amount is enhanced.
Owner:BEIJING NORMAL UNIVERSITY
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