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41results about How to "Improve water flow conditions" patented technology
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Measuring and controlling method of scouring depth of training wall of river reach of bridge site
InactiveCN102864754AGuaranteed to be scientificGuaranteed reasonablenessHydraulic modelsWater flowEngineering
The invention belongs to the field of bridge design, and provides a measuring and controlling method of scouring depth of a training wall of a river reach of a bridge site. The method comprises the following steps of: carrying out a stream deviation scouring experiment, a multi-stream scouring shifting bed model experiment and a projection flow rate shifting bed model experiment; and analyzing the experiment results. A hydraulics generalization experiment for the flood peak constant flow process and a typical shifting bed model experiment for flood peak non-constant flow process are adopted to research the training wall scouring depth problem, and the problem that when the scouring depth of the training wall of the river reach of the bridge site is calculated by the existing formula, the scouring depth does not meet the actual situation of a high-gradient gravel-cobble river is solved, so that the scientific and reasonable arrangement of the training river at the river reach of the bridge site is ensured, and the water flow conditions at the bridge site are improved, water and sand are discharged smoothly at the bridge opening, the approach embankment of a bridge and a bridge head is protected, the bridge site is stabilized, and the bridge crossing safety is prevented from being threatened by disadvantageous evolution of the river reach.
Owner:CHONGQING JIAOTONG UNIVERSITY +1
Inverted K-shaped energy dissipater of concentrated water conveyance system of ship lock and layout method thereof
InactiveCN103397624AUniform velocity distributionIncreased velocity distribution uniformityDry-docksEngineering
The invention discloses an inverted K-shaped energy dissipater of a concentrated water conveyance system of a ship lock and a layout method thereof, belonging to the technical field of the hydraulics of the water conveyance system of the ship lock. The whole energy dissipater is arranged in a grille energy dissipating chamber of a ship-lock short-corridor water conveyance system with the grille energy dissipating chamber and is composed of baffle sills, baffle beams and baffle dampers. The two longitudinal baffle sills are symmetrically arranged in front of a left corridor water outlet and a right corridor water outlet of the water conveyance system, a plurality of longitudinal baffle beams are symmetrically arranged in the energy dissipating chamber according to stepped separated holes, and a plurality of longitudinal baffle dampers are arranged under each top-surface grille hole of the energy dissipating chamber; the baffle sills, the baffle beams and the baffle dampers form the inverted K-shaped energy dissipater on the cross section of a lock chamber. The energy dissipater can significantly increase the uniformity coefficient of velocity distribution of the section of the lock chamber and reduce the turbulent fluctuation of water of the lock chamber so as to effectively improve the mooring condition of lock-chamber ships.
Owner:CHONGQING JIAOTONG UNIVERSITY
Water drainage cross inspection well preventing water face-to-face flushing
ActiveCN104018569AGive full play to drainage efficiencyReduce waterloggingSewerage structuresPipeflowWater flow
The invention discloses a water drainage cross inspection well preventing water face-to-face flushing, belongs to the field of water drainage projects and particularly relates to a rainwater and sewage convergence water drainage structure. The well is an intersection inspection well applicable to a rainwater or sewage pipeline. Branch pipes on the two sides of a water drainage pipeline are connected into the inspection well through sluices with large cornering radius, the sluices of the branch pipes on the two sides are spaced from a sluice of an upstream pipeline, and the included angle of afflux of the three sluices is small. The inspection well can prevent face-to-face flushing of water entering the inspection well, reduce turbulence flow to stabilize the water and bring the water drainage efficiency of the intersection inspection well into full play, thereby reducing the frequency of waterlogging of urban roads.
Owner:洛阳城市建设勘察设计院有限公司 +1
Low-pressure pipeline water-delivering irrigation water outlet
InactiveCN103329777AReduce lossesAvoid scourOperating means/releasing devices for valvesWatering devicesWater useStream flow
The invention provides a Low-pressure pipeline water-delivering irrigation water outlet. The Low-pressure pipeline water-delivering irrigation water outlet comprises a lower-part base, an upper-part tank and a draining water stilling pool, wherein a vertical pipe is contained in the center of the lower base and is provided with the upper-part tank; a base-plate water inlet communicated with the vertical pipe is arranged at the bottom of the upper-part tank; two hinged supporting bases which are fixed by a fastening bolt are arranged on a bottom wall of the upper-part tank on one side of the base-plate water inlet; a turning cover plate covering the base-plate water inlet is connected with the hinged supporting bases; a circle of water-stopping rubber sheet is stuck to an upstream side of the turning cover plate; a manual screw-rod opening-closing device is mounted on a top surface of the upper-part tank and is connected with the turning cover plate through a hinge connecting rod; a water outlet is arranged on a side wall of the upper-part tank; and the draining water stilling pool with flow-measuring scales is mounted on one side of the water outlet, adjacent to the lower-part base. The low-pressure pipeline water-delivering irrigation water outlet can meet the mass flow requirements, and is low in interior water head loss, and is capable of dissipating energy, preventing erosion, quantitatively controlling the flow of drained water and promoting the uniformity of irrigation water.
Owner:YANGZHOU UNIV
Preparation method of biological packing for wastewater treatment
InactiveCN108821426AAvoid poisoningImprove processing efficiencySustainable biological treatmentBiological water/sewage treatmentBound propertyTherapeutic effect
The invention discloses a preparation method of biological packing for wastewater treatment and belongs to the field of water treatment. According to the preparation method, 10-undecen-1-ol and propylene are taken as raw materials, polar monomers trimethylaluminium and triisobutyl aluminium, methylaluminoxane and 2,6-di-tert-butyl-4-methylphenol are added and taken as promoters, ferrocene is takenas a main catalyst, a polymerization reaction is performed, oxygen atoms in enol are shielded by larger substituent groups on alkyl aluminium, catalyst poisoning caused by the fact that lone pair electrons on the oxygen atoms coordinate with an active center is prevented, protected undecylenyl alcohol monomers are copolymerized with propylene to obtain a polymer, hydroxyl is introduced into the polymer, the polymer has better hydrophilic performance and better binding property with wastewater in wastewater treatment, and water treatment efficiency is improved. The problem that the treatment effect is affected due to the fact that current packing is poor in affinity when bound with microorganisms and is prone to balling is solved.
Owner:CHANGZHOU UNIV
Engineering structure for improving water and sediment conditions of lock chamber of lock multi-section dispersive water conveyance system
InactiveCN102359085ASimple structureEasy constructionDry-docksClimate change adaptationEngineering structuresCanal lock
The invention discloses an engineering structure for improving water and sediment conditions of a lock chamber of a lock multi-section dispersive water conveyance system, which comprises a branch galleries and lock chamber water outlet holes arranged in the branch galleries. The end-to-end joint of each two adjacent branch galleries is respectively provided with an auxiliary water outlet gallery. Each auxiliary water outlet gallery is of a U shape or a rectangular shape. The minimum inundated depth at the top of each gallery is not less than the sill depth of a lock. The side walls of the auxiliary water outlet galleries are provided with a plurality of water outlet holes. Due to the adoption of the engineering structure, the uniformity of effluent in the lock chamber is effectively improved and the sediment deposition can also be prevented. Moreover, the engineering structure has simple structure and is convenient to construct, the operation and maintenance cost is obviously saved, and the engineering structure has good application prospect.
Owner:NANJING HYDRAULIC RES INST
Triangular rotary filter net mechanism capable of intaking water from exterior
The invention relates to a triangular rotary filter net mechanism caoable of intaking water from exterior. According to the technical scheme provided by the invention, the triangular rotary filter net mechanism caoable of intaking water from exterior comprises a rectangular net frame and a net covered on the net frame. The triangular rotary filter net mechanism is characterized in that a triangular end plate is installed on two parallel side frames of the net frame, one edge of the triangular end plate is fixed on the side frames of the net frame, the filter net is arranged on the other two edges of the triangular end plate, and the cross section of the filter net is triangular. The triangular rotary filter net mechanism of the invention is designed into a triangular structure, so that the rigidity of the equipment is strengthened, and the equipment can not deform easily, thereby prolonging the service life of the equipment. Meanwhile, the triangular structure has large sewage storing space, the effective filtering area is increased by 15-30%, the open area is large, the pressure difference is very small, impurities can not easily hang on the filter net, the sewage clearing capacity is enhanced, and water flow conditions are improved, thereby providing advantages for normal operation of a circulating water pump. The main body of the triangular rotary filter net mechanism of the invention is made of stainless steel materials, thereby greatly prolonging the overall service life of the equipment.
Owner:无锡市华东电力设备有限公司
Fluidized bed biological filler, preparation method thereof and flowing composite active microbe biological bed
InactiveCN111233133AImprove impact resistanceImprove wear resistanceSustainable biological treatmentBiological water/sewage treatmentBiotechnologyFluidized bed
The invention discloses a fluidized bed biological filler. The filler is composed of the following components in percentage by weight: 75%-85% of polypropylene resin, 1%-3% of a coupling agent, 1%-2%of attapulgite, 3%-8% of a hydrophilic agent, 3-4% of diatomite, 1%-2% of magnetic materials, 1%-3% of antioxidants, 2%-6% of nutritional agents, 0.5%-2% of lubricating agents and 0.2%-1% of dispersing agents and has good biological adhesiveness. The invention further discloses a preparation method of the fluidized bed biological filler and a flowing composite active microbe biological bed adopting the fluidized bed biological filler.
Owner:浙江永续环境工程有限公司
Floating net vortex eliminating method applied in front of water inlet
InactiveCN105544474AImprove water flow conditionsBreaking boundary conditionsBarrages/weirsVisual inspectionEngineering
The invention relates to a floating net vortex eliminating method applied in front of a water inlet. The method comprises the following steps: (1) firstly, a water level with stronger and stable serial inspiration vortex in front of the water inlet is observed through visual inspection; and meanwhile, the position and the diameter size of the vertical shaft vortex in front of the water inlet are determined; (2) the diameter size of the vertical shaft vortex is determined through visual inspection to produce a floating net with an edge length L=(3.0-5.0) D vortex max; (3) the vortex eliminating mounting position of the floating net, produced in the step (2), on the water surface in front of the water inlet is determined according to the position, of the vertical shaft vortex in front of the water inlet, determined through visual inspection in the step (1); and (4) the floating net produced in the step (2) is fixedly mounted in the position of the water surface with the vertical shaft vortex in front of the water inlet determined in the step (3). The method has the following prominent characteristics: after the vertical shaft vortex is discovered in front of the water inlet in engineering operation, the vortex eliminating floating net is produced according to actual conditions and mounted according to the vortex generation position, so that the pertinence is higher.
Owner:SICHUAN UNIV
Roller energy dissipation device
The invention discloses a roller energy dissipation device. The roller energy dissipation device comprises a roller supporting frame, a roller and a steel shaft. The roller support frame is arranged on the foundation of the sea flood section, the steel shaft is arranged in the roller supporting frame, and the roller is arranged on the steel shaft to rotate along with the steel shaft. The roller energy dissipation device is arranged behind a stilling basin and is simple in structure, easy to operate and low in manufacturing cost. The roller energy dissipation device can effectively solve the scouring effect of the high-speed water flow on the downstream riverbed of a low-head hydraulic structures (sluices) for retaining water and discharging water in the discharging process, further protectthe riverbed, the riverbank and improve the water flow condition, and save the cost for reinforcing and repairing the riverbank.
Owner:KUNMING UNIV OF SCI & TECH
Continuous flow diverting energy dissipation type spillway and arc-shaped stilling pier
The invention relates to a continuous flow diverting energy dissipation type spillway, an arc-shaped stilling pier and an energy dissipation unit. The continuous flow diverting energy dissipation typespillway comprises arc-shaped stilling piers, arc-shaped flow diverting partition walls, a side wall and a bottom plate, the arc-shaped stilling piers, the arc-shaped flow diverting partition walls,the side wall and the bottom plate are integrally poured, the arc-shaped stilling piers and the arc-shaped flow diverting partition walls are arc-shaped in the direction perpendicular to the water flow direction, the arc-shaped stilling piers are located on the center line of the spillway, flow diverting holes are formed in pier bodies of the arc-shaped stilling piers, and the arc-shaped flow diverting partition walls are symmetrically arranged on the two downstream sides of the arc-shaped stilling piers correspondingly. According to the spillway, the structure is simple, the manufacturing cost is low, the number of energy dissipation sections can be automatically adjusted to be increased or decreased according to water flow conditions, the arc-shaped stilling piers are adopted to stop flow and dissipate energy, the arc-shaped flow diverting partition walls and the arc-shaped stilling piers are used in cooperation, the symmetrical arc-shaped flow diverting partition walls on the two sides guide water flow to generate concentrated counteraction energy dissipation with water flow from the arc-shaped stilling piers, the flow direction of fluid tends to be unified again, and the waterflow condition is improved.
Owner:TIANJIN CHENGJIAN UNIV
Inverted K-shaped energy dissipater of concentrated water conveyance system of ship lock and layout method thereof
InactiveCN103397624BUniform velocity distributionIncreased velocity distribution uniformityDry-docksEngineering
The invention discloses an inverted K-shaped energy dissipater of a concentrated water conveyance system of a ship lock and a layout method thereof, belonging to the technical field of the hydraulics of the water conveyance system of the ship lock. The whole energy dissipater is arranged in a grille energy dissipating chamber of a ship-lock short-corridor water conveyance system with the grille energy dissipating chamber and is composed of baffle sills, baffle beams and baffle dampers. The two longitudinal baffle sills are symmetrically arranged in front of a left corridor water outlet and a right corridor water outlet of the water conveyance system, a plurality of longitudinal baffle beams are symmetrically arranged in the energy dissipating chamber according to stepped separated holes, and a plurality of longitudinal baffle dampers are arranged under each top-surface grille hole of the energy dissipating chamber; the baffle sills, the baffle beams and the baffle dampers form the inverted K-shaped energy dissipater on the cross section of a lock chamber. The energy dissipater can significantly increase the uniformity coefficient of velocity distribution of the section of the lock chamber and reduce the turbulent fluctuation of water of the lock chamber so as to effectively improve the mooring condition of lock-chamber ships.
Owner:CHONGQING JIAOTONG UNIVERSITY
Method for culturing whitefish through running water
InactiveCN106172102AGood current conditionsHigh oxygen contentClimate change adaptationPisciculture and aquariaFisherySilt
A method for breeding white fish in running water, which relates to the technical field of fish farming, comprising the following steps: constructing fish ponds, constructing fish ponds in rows and in steps, and building them with cement, and the water surface area of a single fish pond is 10 to 200 square meters The depth of the water is between 1.5 and 2 meters. There are water hole grooves between the adjacent single fish ponds for continuous disinfection. The disinfection kits are wrapped with gauze and bound to the edge of the most upstream single fish pond; white fish Stocking, raising 8 to 12 seedlings per unit square; daily management: replenish water to the most upstream fish ponds every day, and the water in the upstream fish ponds flows downstream continuously to ensure the water flow rate of each fish pond , every 15 to 20 days to clean up the silt at the bottom of the pond to ensure that the thickness of the bottom silt is less than 10cm. The invention has good water flow conditions and high oxygen-enriched content, is convenient for rapid growth of white fish, and has high quality of white fish.
Owner:全椒县管坝民族村综合养殖专业合作社
Natural vertical seam type fish way structure with adjustable flow speed and construction method thereof
PendingCN112761121AImprove water flow conditionsFavorable for inducing migration throughBarrages/weirsClimate change adaptationWater flowEngineering
The invention relates to the technical field of fish way engineering in the water and electricity industry, and particularly relates to a natural vertical seam type fish way structure with the adjustable flow speed. The natural vertical seam type fish way structure comprises a fish way bottom plate, wherein fish way side walls are vertically arranged on the two sides of the top of the fish way bottom plate, the fish way bottom plate and the fish way side walls are of an integrally-formed structure, and a plurality of speed adjusting units are arranged between the two fish way side walls at equal intervals. According to the natural vertical seam type fish way structure, a large number of natural building materials such as sandy gravel are used, the flow speed of the fish way water flow is adjusted, the characteristics of a natural river channel are simulated to the maximum extent, a good fish passing environment and the most suitable water flow condition are created for fish passing objects, the advantages of being high in fish passing efficiency and environmentally friendly are achieved, and the defects in the prior art can be well overcome.
Owner:WATER ENG ECOLOGICAL INST CHINESE ACAD OF SCI
Grid stirring flocculation reaction device
InactiveCN103848487AReduce lossesGood flocculation effectWater/sewage treatment by flocculation/precipitationFlocculationImpeller
The invention discloses a grid stirring flocculation reaction device. The grid stirring flocculation reaction device is composed of a plurality of vertical shafts via series connection; the tops of the vertical shafts are provided with a cover plate; the straight groove of every 1 to 3 rows of the vertical shafts is provided with a stirring machine and a plurality of layers of a grid filling material; each stirring machine is composed of a stirring motor and stirring blades; the stirring motors are arranged on the corridor-type cover plate arranged on the tops of the vertical shafts; the grid filling material is penetrated by stirring shafts; the stirring blades are connected with the stirring motors via the stirring shafts. The grid stirring flocculation reaction device is low in head loss and excellent in effects; effective energy consumption ratio is increased, so that needed flocculation time is shortened, and pond volume is reduced; the grid stirring flocculation reaction device is simple in structure; management, installation, and maintenance are convenient; impact resistance is excellent; water flow conditions are improved greatly; pond bottom sludge deposition is not easily caused; growth of algae on grids, and blocking of grid meshes are not easily caused because of continuous stirring.
Owner:JIANGSU JINGYUAN ENVIRONMENTAL PROTECTION
Double outlet type volute centrifugal pump with high specific speed
InactiveCN111536077AImprove outflow efficiencyImprove efficiencyPump componentsRadial flow pumpsWater flowEngineering
The invention discloses a double outlet type volute centrifugal pump with a high specific speed. An impeller is arranged at an annular opening of the inner side of a double outlet type volute, the bottom of the impeller is connected to a water suction pipeline, and two water outlets of the double outlet type volute are connected to water outlet pipelines; blades of the impeller are of cylindrical-like twisting structures, and the front and back surfaces of the blades are in smooth connection from top to bottom by curved surfaces with different curvatures; and the water suction pipeline, the impeller and the center of the double outlet type volute are in the same axis. The double outlet type volute centrifugal pump discharges water bidirectionally through the two water outlets, so that theeffluent efficiency of the centrifugal pump is improved. Meanwhile, the speed component of a water flow in the circumferential direction of the volute is enhanced, the water flow condition at the outlets of the volute are improved, and the hydraulic loss is reduced, so that the centrifugal pump has good hydraulic performance and operating efficiency.
Owner:HOHAI UNIV
Adjustable vortex-preventing beam and construction method thereof
ActiveCN107288108AOvercome the disadvantage of not being able to adjust the heightAvoid it happening againBarrages/weirsFinal product manufactureReinforced concreteEntablature
The invention discloses an adjustable vortex-preventing beam. The adjustable vortex-preventing beam comprises precast reinforced concrete beams, lifting rings and precast concrete cushion blocks; the precast reinforced concrete beams adopt T-shaped structures; one end of each lifting ring is pre-embedded in the corresponding precast reinforced concrete beam, and the other end of the lifting ring extends out of the upper end of the precast reinforced concrete beam; bolt holes include first bolt holes, second bolt holes, third bolt holes and fourth bolt holes; the precast reinforced concrete beams include transverse precast reinforced concrete beams and longitudinal precast reinforced concrete beams; the first bolt holes are formed in the left and right end surfaces of the transverse precast reinforced concrete beams from top to bottom; the precast concrete cushion blocks are arranged between the precast reinforced concrete beams and entablatures and are arranged on four corners in the positions where the precast reinforced concrete beams are overlapped with the entablatures; the precast reinforced concrete beams are fixed on the entablatures through angle steel; and the second bolt holes correspond to the first bolt holes. The adjustable vortex-preventing beam has the advantage that vortex production can be prevented. The invention further discloses a construction method of the adjustable vortex-preventing beam.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES
Ship lock concentration and dispersion delivery system without calm section
ActiveCN101525876BReduce the intensity of wave propagationOpen fastDry-docksWater flowDelivery system
The invention relates to a ship lock concentration and dispersion delivery system without a calm section, belonging to the technical field of ship lock water-carriage system hydraulics. The ship lock concentration and dispersion delivery system comprises a lock chamber formed by an upper course strobe and a lower course strobe, wherein the upper course of the upper course strobe is provided with a water inlet which spans a ship lock, and both ends of the water inlet respectively extend into the lock chamber through water-carriage passages controlled by a water-carriage valve; the lock chamberis provided with at least two bottom water-outflow energy dissipation sections which extend longitudinally, and the water-carriage passages inside the lock chamber are respectively communicated with the adjacent bottom water-outflow energy dissipation sections through lateral branching holes which are distributed at intervals. The invention has the obvious advantages of sufficient current energy dissipation, engineering investment saving, increased starting speed of a valve, shortened water-carriage time, increased lockage number, small construction quantities, convenient construction maintenance, and the like.
Owner:NANJING HYDRAULIC RES INST
A magnetic biofilter
ActiveCN104829041BGood adhesionHigh activityMultistage water/sewage treatmentBiofilm growthFiltration
Owner:云南傲远市政建设工程有限公司
Low-water-head large-flow axial flow water turbine with double-inlet volute
PendingCN111535972AImprove uniformityEnhanced speed componentHydro energy generationReaction enginesWater turbineStream flow
The invention discloses a low-water-head large-flow axial flow water turbine with a double-inlet volute. According to the water turbine, a socket ring is arranged at an annular opening in the inner side of the double-inlet volute, a circle of movable guide vanes are arranged in the socket ring, a rotating wheel is arranged at the bottom of the socket ring, the bottom of a runner cone penetrates through the rotating wheel, the top of the runner cone is connected to the inner side of the seat ring in a sleeved mode, a draft tube is arranged at the bottom of the rotating wheel, two water inlet pipes are arranged in the circumferential direction of a volute structure section, a corresponding downward slope section is arranged at the tail end of each water inlet pipe, a plurality of water outlet pipes are arranged at the tail end of the draft tube, and front surfaces and back surfaces of blades are smoothly connected through curved faces with different curvatures from top to bottom correspondingly. According to the water turbine, two-way water inflow is achieved through two water inlets, uniformity of water flow in the volute in the circumferential direction is improved, the speed component of the water flow in the circumferential direction is enhanced, the water flow circulation of incoming flow is effectively increased, the condition of the water flow entering a water guide mechanism is improved, the hydraulic loss of the water guide mechanism is reduced, and the advantages of being good in hydraulic performance, high in operation efficiency and the like are achieved.
Owner:HOHAI UNIV
Low-specific-speed mixed-flow water turbine with double-inlet volute
InactiveCN111535971AImprove efficiencyImprove operational efficiencyHydro energy generationReaction enginesWater turbineWater flow
The invention discloses a low-specific-speed mixed-flow water turbine with a double-inlet volute. An annular opening in the inner side of the double-inlet volute is provided with a connecting base ring; the inner periphery of the connecting base ring is provided with a circle of fixed guide vanes; the outer periphery of the connecting base ring is provided with a circle of movable guide vanes; aninner ring of the connecting base ring is sleeved with a rotating wheel; the lower portion of the connecting base ring is connected with the front end of a tail water pipe; the vanes in the rotating wheel are configured as X-type unequal-thickness distortional vanes; and the front surfaces and back surfaces of the vanes are smoothly connected from top to bottom by virtue of different-curvature curved surfaces. Two water inlets of the low-specific-speed mixed-flow water turbine disclosed by the invention are the uniformity of water flow in the circumferential direction of the volute is improvedand the velocity component of the water flow in the circumferential direction is enhanced, thereby effectively increasing the circular rector of the coming water flow, improving the condition of thewater flow entering a water guide mechanism, reducing hydraulic loss of the water guide mechanism and thus achieving good hydraulic performance and running efficiency of the low-specific-speed mixed-flow water turbine.
Owner:HOHAI UNIV
Gate chamber of horizontal gate of high water head ship lock and operation control method of horizontal gate
ActiveCN105442519ASimple structureEasy construction and maintenanceBarrages/weirsDry-docksEngineeringHydraulic engineering
The invention relates to a gate chamber of a horizontal gate of a high water head ship lock and an operation control method of the horizontal gate, and belongs to the technical field of hydraulic engineering. The gate chamber is used for placing a gate body arranged on an upper gate of the ship lock, and includes gate walls arranged at the upstream and the downstream of the gate body and a first gate chamber and a second gate chamber oppositely arranged on two sides of the gate head of the gate body; the first gate chamber and the second gate chamber are respectively formed by projecting the gate walls to two sides; the first gate chamber is used for accommodating the parking of the gate body when the gate body is totally opened; the second gate chamber is used for supporting the gate head of the gate body when the gate body is closed to stop water; the ratio of the widths of the first gate chamber and the second gate chamber to the thickness of the gate body is 1.9-2.2: 1.2: 1; the ratio of the lengths of the first gate chamber and the second gate chamber to the width of the gate body is 1.5: 1.3: 1; and when the gate body is totally opened and parked in the first gate chamber, the ratio of the gap distance length between the first gate chamber and the gate chamber edge wall of the first gate chamber to the thickness of the gate body is 0.9-1.2: 1. The gate chamber and the gate operation control method have the advantage of capability of reducing hydrodynamic drag moment.
Owner:NANJING HYDRAULIC RES INST
Drainage four-way inspection well to prevent water flow hedging
ActiveCN104018569BGive full play to drainage efficiencyReduce waterloggingSewerage structuresPipeflowWater flow
The invention discloses a water drainage cross inspection well preventing water face-to-face flushing, belongs to the field of water drainage projects and particularly relates to a rainwater and sewage convergence water drainage structure. The well is an intersection inspection well applicable to a rainwater or sewage pipeline. Branch pipes on the two sides of a water drainage pipeline are connected into the inspection well through sluices with large cornering radius, the sluices of the branch pipes on the two sides are spaced from a sluice of an upstream pipeline, and the included angle of afflux of the three sluices is small. The inspection well can prevent face-to-face flushing of water entering the inspection well, reduce turbulence flow to stabilize the water and bring the water drainage efficiency of the intersection inspection well into full play, thereby reducing the frequency of waterlogging of urban roads.
Owner:洛阳城市建设勘察设计院有限公司 +1
Low-pressure pipeline water-delivering irrigation water outlet
InactiveCN103329777BReduce lossesAvoid scourOperating means/releasing devices for valvesWatering devicesWater useStream flow
The invention provides a low-pressure pipeline water delivery irrigation outlet, which includes a lower base, an upper box body and a water outlet stilling pool. The center of the lower base contains a riser, and an upper box body is placed; The water inlet of the bottom plate of the riser is provided with two hinge supports fixed by fastening bolts on the bottom wall of the upper box on the side of the water inlet of the bottom plate. The hinge supports are connected with a flip cover covering the water inlet of the bottom plate. A circle of water-stop rubber is bonded to the facing surface of the overturned cover; a manual screw opening and closing device is installed on the top surface of the upper box, and the overturned cover is connected to the overturned cover through a hinged connecting rod; a water outlet is provided on the side wall of the upper box. A water outlet stilling tank with a flow measurement scale is installed adjacent to the lower base on one side of the water outlet. The invention adapts to the requirement of large flow, has small internal water head loss, can dissipate energy and prevent scour, can quantitatively control the flow of water, and improves the uniformity of irrigation water.
Owner:YANGZHOU UNIV
A floating net vortex elimination method used before the water inlet
InactiveCN105544474BImprove water flow conditionsBreaking boundary conditionsBarrages/weirsVisual inspectionEngineering
Owner:SICHUAN UNIV
Underwater water taking system, ship lock water inlet system with underwater water taking system and construction method
ActiveCN112982276AReduce wave heightReduce flow rateDry-docksClimate change adaptationWater flowEnvironmental engineering
The invention provides an underwater water taking system, a ship lock water inlet system with the underwater water taking system and a construction method. The underwater water taking system comprises a water inlet system and a water conveying system; the water inlet system and the water conveying system are connected and arranged in an approach channel; the water inlet system comprises a water inlet box culvert; a box culvert pit is formed in the approach channel; the water inlet box culvert is arranged in the box culvert pit; the water conveying system comprises a water conveying box culvert; the water conveying box culvert is buried at the bottom of the approach channel and connected with the water inlet box culvert to convey water flow entering from the water inlet box culvert; and the burying depth of the water conveying box culvert is 1 m. According to the underwater water taking system, the ship lock water inlet system with the underwater water taking system and the construction method, direct water taking from the approach channel is avoided, the wave height and the flow speed in the approach channel can be reduced by about 50% when a ship lock is used for water filling, the water flow condition in the approach channel is improved, meanwhile, the construction process is dry land construction, and the construction difficulty can be greatly reduced.
Owner:TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
Method of farming cyprinus carpio with running water
InactiveCN106172107APromote growthImprove qualityFood processingClimate change adaptationWater sourceSludge
The invention relates to the technical field of fish farming, in particular to a method of farming cyprinus carpio with running water. The method includes the steps of constructing fish ponds, wherein the fish ponds are constructed in rows in a stepped mode and built with cement, the water surface area of the single fish pond is 10-200 m<2>, the water depth is 1.5-2 m, a running water hole groove is formed between the adjacent single fish ponds, the fish ponds are continuously disinfected, and a disinfectant bag is wrapped by gauze and bound to the edge of the most upstream single fish pond; stocking cyprinus carpio, wherein 8-12 fry are farmed in one unit square; daily management, wherein water is continuously supplemented to the fish pond at the most upstream position every day, water in the upstream fish ponds continuously flows to the downstream position, the water flow speed of all the fish ponds is ensured, sludge at the bottoms of the ponds is cleared at the interval of 15-20 days, it is ensured that the thickness of the bottom sludge is smaller than 10 cm. The water flow condition is good, enriched oxygen content is high, which is beneficial for fast growth of cyprinus carpio, and cyprinus carpio is high in quality.
Owner:全椒县管坝民族村综合养殖专业合作社
High-specific-speed axial flow water turbine with double-inlet volute
InactiveCN111577508AImprove uniformityEnhanced speed componentHydro energy generationReaction enginesWater turbineWater flow
Owner:HOHAI UNIV
Novel horizontal h-shaped pump gate device
PendingCN113323881AOptimize layoutLow operating headCircumferential flow pumpsPump componentsPipe waterWater flow
The invention discloses a novel horizontal h-shaped pump gate device. The device comprises a bulkhead gate, a lower-layer water passing flow channel, a water suction horn pipe, a service gate, a bent pipe, a diffusion pipe water outlet flow channel, a flap valve and a horizontal front shaft extension type water pump unit; the horizontal front shaft extension type water pump unit is mounted above the water inlet side of the lower-layer water passing flow channel; one end of the horizontal front shaft extension type water pump unit is connected with the water suction horn pipe through a 90-degree elbow, and the other end of the horizontal front shaft extension type water pump unit is connected with the diffusion pipe water outlet flow channel; the water suction horn pipe extends into the lower-layer water passing flow channel; the flap valve is arranged at an outlet of the diffusion pipe water outlet flow channel and is positioned in a B-side water tank; the lower-layer water flow channel is positioned between an A-side water tank and the B-side water tank; the bulkhead gate is arranged at a communication port of the lower-layer water flow channel and the A-side water tank; and the working gate is arranged at a communication port of the lower-layer water flow channel and the B-side water tank. The device has the advantages of self-flowing water passing function, convenience in ventilation, heat dissipation and operation maintenance, and small occupied plane vertical water flow direction size.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES
Medium-specific-speed centrifugal pump with double-outlet volute
InactiveCN111795004AImprove efficiencyImprove operational efficiencyPump componentsRadial flow pumpsWater flowEngineering
The invention discloses a medium-specific-speed centrifugal pump with double-outlet volute. The medium-specific-speed centrifugal pump is characterized in that an impeller is arranged at an annular opening in the inner side of the double-outlet volute, a water suction pipeline is connected to the bottom of the impeller, and water outlet pipelines are connected to two water outlets of the double-outlet volute; blades of the impeller are of a cylinder-like twisted structure, and the front faces and the back faces of the blades are smoothly connected through curved surfaces with different curvatures from top to bottom. For the medium-specific-speed centrifugal pump with the double-outlet volute, two-way water outlet is achieved through the two water outlets, the outflow efficiency of the centrifugal pump is improved, meanwhile, the speed component of water flow in the circumferential direction of the volute is enhanced, the water flow condition at the outlet of the volute is improved, hydraulic losses are reduced, and the medium-specific-speed centrifugal pump has good hydraulic performance and operation efficiency.
Owner:HOHAI UNIV
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