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99 results about "Plunge pool" patented technology
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A plunge pool (or plunge basin or waterfall lake) is a deep depression in a stream bed at the base of a waterfall or shut-in. It is created by the erosional forces of cascading water on the rocks at formation's base where the water impacts. The term may refer to the water occupying the depression, or the depression itself.
Flood discharging method for anticorrosion and energy dissipation of rotational flow ring dam and device thereof
The invention relates to a flood discharging method for anticorrosion and energy dissipation of a rotational flow ring dam and a device thereof. The device comprises a vertical well; the bottom of thevertical well is communicated with a horizontal energy dissipation hole; the energy dissipation hole is communicated with a flow guide hole; the inlet of the vertical well is provided with the ring dam; the inner ring of the ring dam is connected with a smooth contracted curved surface formed in the vertical well; the ring dam is externally provided with a plurality of flow guide piers; the central lines of the flow guide piers and the tangent lines of the flow guide piers form inclined angles Theta which is larger than and equal to 0 degree and is less than 45 degree; a connection part between the vertical well and the energy dissipation hole, which is relative to the energy dissipation hole, is provided with a space; the energy dissipation hole is provided with a water collecting pier and a contracting pier; and a plunge pool is arranged between the water collecting pier and the contracting pier. Because the flow guide piers are tangent with the edge of the ring dam or the flow guide piers are connected with the edge of the ring dam by forming a small angle, the water flow is rotary, and spiral flow moves in the vertical well. The invention has simple structure, convenient construction, less investment, no maintenance, good anticorrosion and energy dissipation effect, no pulverization phenomenon at the outlet of the flood discharging hole, and protects ecology environment.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Device and method for alleviating flood discharging atomization of high dam
The invention relates to a device and a method for alleviating flood discharging atomization of a high dam. The device comprises control rooms, connecting pipes, injection pipes and a low cost environmentally-friendly moisture absorption particle material. Injection systems are arranged at the top of a side wall of a downstream plunge pool of the dam or in a proper position of a downstream bank slope; the control rooms are close to the downstream face of the dam; the connecting pipes are arranged along the side wall top of the plunge pool and the injection pipes are arranged on the connecting pipes at intervals; the nozzles of the injection pipes face the inside of the plunge pool and the angles of the injection pipes can be adjusted toward a dense fog region. The environmentally-friendly moisture absorption particle material is injected to two sides of the dense fog region in the plunge pool by virtue of the injection devices. Atomized water drops are accelerated to combine and fall by virtue of the hydrophilicity of the moisture absorption particles and heavy rainfall is constrained in the plunge pool, so that the downstream atomizing damage is alleviated and the cost of a fog rain protective project is lowered, and meanwhile, a sufficient space is provided for optimizing project layout. The device and method not only can be used for a newly built high dam project, but also can be used for fog-reducing transformation of built projects.
Owner:SICHUAN UNIV
High-geostress narrow-valley inverted arch plunge pool and design method thereof
ActiveCN101555687AAvoid touchingImprove stress concentrationBarrages/weirsStress concentrationRiver bed
The invention belongs to a concentrated flood discharge and energy dissipation structure behind a hydroelectric dam, and more particularly relates to a high-geostress narrow-valley inverted arch plunge pool and a design method thereof. The plunge pool is structurally characterized by comprising a bottom plate (1), arch supports (2) and anchor bar piles (3), wherein the bottom plate (1) is an arched concrete structure on the whole, and two ends of the arched concrete bottom plate (1) is connected with the arch supports (2) into a whole; the anchor bar piles (3) are arranged at the lower end of the arched concrete bottom plate (1) at intervals, and each anchor bar pile (3) keeps perpendicular to the lower end of the bottom plate (1); and the arch supports (2) at the two ends are positioned at the lower ends of protection slopes (9) at the two ends. The design method is completed by five steps, makes full use of the natural 'pan bottom'-shaped river beds, avoids touching geostress concentration areas at the bottom of the valley due to trapezoid excavation, and adopts the inverted arch structure to finally transfer most of load to rock mass through the arch supports instead of bearing all the load by the river beds, thus improving the stress concentration phenomenon at the bottom of the valley.
Owner:POWERCHINA XIBEI ENG
Double-wing type combined trajectory energy dissipation structure
The invention discloses a double-wing type combined trajectory energy dissipation structure, which comprises a central overflow groove, and an overflow side groove and a water discharging bottom hole which are orderly positioned on two sides of the central overflow groove; an outlet of the central overflow groove is provided with a planar diffusion continuous step-down; an outlet of the overflow side groove is provided with a shrinkage slotted flip bucket; and an outlet of the water discharging bottom hole is provided with a warped deflecting bucket. The energy dissipation structure can reduce the width of a downstream plunge pool, improve the state of flow of the plunge pool, and save construction cost and period.
Owner:SICHUAN UNIV
Arch dam flood-discharge energy-dissipating structure
ActiveCN101126232AMeet the requirements of flood discharge and energy dissipationReduce flood discharge atomization intensityBarrages/weirsPower stationPlunge pool
The invention discloses a flood-discharging and energy-dissipating structure for the high concrete arch dam in the gorge area, which can effectively decrease the discharging atomization in the flood discharge and can meet the requirement of draining the large water flow through the dam body in the gorge area. The arch dam flood-discharging and energy-dissipating structure is provided with an upper opening and a lower opening at the dam body, an afterbay dam is arranged at the downstream of the large dam to form a plunge pool, the upper opening adopts narrow slot falling type to drain, the water flow from the upper opening and the lower opening does not collide in the air. Through the reasonable arrangement of the position, type and the discharge angle of the upper opening and the lower opening, the drained water flow of the whole dam body is fully diffused, the water flow is considerably aerified in the air, the energy per unit area shot into the downstream plunge pool is decreased, which meets the flood-discharging and energy-dissipating requirement of the dam. At the same time, the water flow from the upper opening and the lower opening does not collide in the air, which considerably decreases the atomization intensity in the flood discharge. The invention can be widely generalized and used in the power station that has high head drop, large flow and is at the deep gorge.
Owner:POWERCHINA CHENGDU ENG
Testing device for measuring hydrodynamic gap pressure of bottom plates of plunge pool
The invention discloses a testing device for measuring the hydrodynamic gap pressure of bottom plates of a plunge pool. The testing device comprises the plunge pool and pressure sensors, wherein the plunge pool comprises a box, a testing section and non-testing sections; the box can move along the direction of water flow; the testing section is arranged at the bottom of the box; according to the non-testing section, transverse seams are formed in the bottom of the box and between the upstream and downstream ends of the testing section respectively; a lining plate is arranged between the testing section and the bottom of the box; a bottom seam is formed between the lining plate and the testing section; the pressure sensors pass through the lining plate and enter the bottom seam. According to the testing device, a transverse distribution rule of the hydrodynamic gap pressure can be obtained, and a longitudinal distribution rule of the hydrodynamic gap pressure can also be tested; the influence on the hydrodynamic gap pressure caused by water filled from the transverse seams and longitudinal seams is comprehensively considered; the influence on the hydrodynamic gap pressure caused by different sizes of uplift pressure is considered; the hydrodynamic gap pressure of the transverse seams or the longitudinal seams under different extents of water-seal inactivation can be measured; the deformation of concrete bottom plates can be simulated, and the device more accords with actual engineering.
Owner:POWERCHINA ZHONGNAN ENG
Step type and spiral reverse rotation bottom sill type combined energy dissipation facility and energy dissipation method
ActiveCN105133555AIncrease coefficient of frictionEnhanced shooting functionBarrages/weirsImpellerBall bearing
The invention discloses a step type and spiral reverse rotation bottom sill type combined energy dissipation facility and an energy dissipation method and relates to the technical field of dam flood discharge and energy dissipation. A step type and spiral reverse rotation bottom sill type combined energy dissipation facility body comprises an overflow weir, a step structure, a spiral impeller structure and a plunge pool; the step structure comprises multiple step units and is fixed on a straight line section of the overflow weir, and each step unit comprises a step curved surface, a step vertical surface and pier structures; the spiral impeller structure comprises multiple double-spiral impeller units, and each double-spiral impeller unit comprises impellers, rotating shafts, ball bearings and fixing parts; the spiral impeller structure is fixed on a reverse curve section of the overflow weir through a base. The step structure and the spiral impeller structure are assembled on the overflow weir, the energy dissipation mode of the overflow weir is improved, higher energy dissipation and erosion control efficiency and prominent engineering practical value are realized, and the application prospect is broad.
Owner:嘉善永升五金厂
Dam face energy dissipation tool
InactiveCN103225292AAvoid cavitationImprove energy dissipation efficiencyBarrages/weirsCavitationWater flow
The invention discloses a dam face energy dissipation tool. A plurality of groups of bosses are distributed on a dam face from top to bottom in a staggered mode; the top surface of each boss tilts upwards from front to rear; the rear edge of each boss is arc-shaped; the air entraining length can be effectively increased, and the contact surface of water flow and air is enlarged, so that the air mixing on the surface of an aerial drainage tongue is full, an air-containing vortex on the bottom edge is stable and complete. In addition, the top surface of the boss tilts upwards to form a slightly concave area like a miniature plunge pool, the energy dissipation can be improved and the drop flow impact can be reduced due to a formed plunge layer, and the dam face is prevented from being subjected to cavitation; and during flood discharge, the water flow is dispersed and drops in a fan shape from the top surfaces of the bosses and forms the air-containing vortex along the arc-shaped rear edges of the bosses, the fan-shaped disperse water flow and the fan-shaped disperse water flow on the adjacent bosses are collided and mixed on the plunge layer on the top surfaces of the next bosses, are dispersed and drop in the fan shape and form a scale-type dam face space three-dimensional energy dissipation typical flow state in which the surface has an air mixing tongue, the bottom has the air-containing vortex and the local part has disperse collision and plunge energy dissipation. The dam face energy dissipation efficiency can be effectively improved.
Owner:PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION
Multifunctional sanitary equipment for swimming, bathing, surfing, massaging, and manufacturing method thereof
The invention discloses multifunctional sanitary wares which comprise a shell, wherein, a swim zone and a surf and massage plunge bath zone are formed at the two ends of the shell respectively. The surf and massage plunge bath zone is divided into a plurality of massage seats which are provided with surf ejection ports; a clapboard is arranged between the swim zone and the surf and massage plungebath zone to divide the two zones and integrate into a whole. By adopting the clapboard to divide the swim pool and the surf and massage plunge bath pool, the invention overcomes the shortage in the prior art and not only integrates the swim pool and the surf massage plunge pool into a whole but also has the two zones to be independent to each other, thereby providing the swim pool and the surf and massage plunge bath pool with comparatively large volumes and preventing people in need of steady massage and people in need of swimming from affecting each other and is beneficial for relaxing andrelieving tiredness, in addition, the invention also discloses a manufacturing method of the multifunctional sanitary wares.
Owner:东莞圣雅洁具有限公司
Non-uniform flexible anchoring baffle pond inverted arch bottom plate structure
InactiveCN101302750AFacilitate the realization of joint forceGood for anti-stress propertiesBarrages/weirsRebarBoard structure
The invention discloses a counterarch bottom board structure of an unevenly and softly anchored plunge pool. The counterarch bottom board structure comprises a plurality of sections of concrete counterarch bottom boards (1) which are transversely distributed along the counterarch bottom board of the plunge pool, concrete arch bases (2) and anchoring steel bars (6); the concrete counterarch bottom boards (1) which are arranged at the different transverse locations of the plunge pool are provided with the anchoring steel bars (6) in different amounts according to the principles of the small amount of central boards and the large amount of margin boards, and the anchoring steel bars (6) are provided with certain length of free sections. By adopting the counterarch bottom board structure of the unevenly and softly anchored plunge pool, the needed amount of the anchoring bars can be effectively reduced while the security of the plunge pool is guaranteed. In addition, when bearing a heavier thrust at springer, the counterarch bottom board structure of the unevenly and softly anchored plunge pool, provided by the invention, can realize the joint bearing between the anchoring bar and the arch base on the counterarch bottom board structure of the plunge pool, and is beneficial to the anti-pressing characteristics of the concrete of the arch base and the over load capacity of the arch structure.
Owner:TIANJIN UNIV
Big-discharge efficient energy dissipater structure of narrow river valley arch dam
The invention discloses a big-discharge efficient energy dissipater structure of a narrow river valley arch dam. Aiming to solve the problems that under the conditions of a narrow river valley and a deluge, the conventional arch dam project easily causes serious downstream washing damage and stability of slopes on the side banks is affected, the big-discharge efficient energy dissipater structure of the narrow river valley arch dam is structurally characterized by including flood discharge surfaces holes and flood discharge deep holes in the arch dam body at the river bed, and a downstream plunge pool of the arch dam, wherein the surface holes and the deep holes are flaring piers, and the bottoms of the openings of the surface holes and the deep holes are connected with flip buckets. The big-discharge efficient energy dissipater structure provided by the invention is capable of discharging deluge and endowed with the function of excellent energy dissipation, meets the requirement for safe flood discharge, meanwhile better solves the difficult problem of downstream energy dissipation, and ensures the project safety.
Owner:POWERCHINA ZHONGNAN ENG
Plunge pool water filling and discharging system capable of generating electricity
ActiveCN103556611AImprove the operating environmentReduce energy consumptionWater-power plantsConventional hydroenergy generationElectricityWater diversion
The invention relates to a plunge pool water filling and discharging system capable of generating electricity, aiming at providing a plunge pool water filling and discharging system which is capable of generating electricity, is convenient to overhaul, safe, reliable and easy in running and maintenance, and can reduce energy consumption. The invention has the technical scheme that the plunge pool water filling and discharging system capable of generating electricity is provided with a dam, a plunge pool, an auxiliary weir and a downstream river channel, wherein a drainage gallery of the auxiliary weir is internally provided with a water pumping energy storage power generation plant; the plant is internally provided with a reversible type water pump hydroelectric generating set; under the working condition of a water pump, a water inlet of the reversible type water pump hydroelectric generating set is communicated with the plunge pool by a pipeline I buried in the auxiliary weir, and a water outlet is communicated with the downstream river channel by a pipeline II buried in the auxiliary weir; a mountain body at one side of the auxiliary weir is provided with a regulating reservoir used for converging the mountain earth surface water seepage of the both sides of the plunge pool and the leakage water of the dam, the plunge pool and an underground plant; the regulating reservoir is higher than the water level of the downstream river channel; the regulating reservoir is communicated with the pipeline II by a water diversion power generation pipeline. The plunge pool water filling and discharging system is suitable for the hydraulic and hydroelectric engineering.
Owner:POWERCHINA HUADONG ENG COPORATION LTD
Trajectory energy dissipation and scouring preventing method of spillway of small and medium-sized reservoir
The invention discloses a trajectory energy dissipation and scouring preventing method of a spillway of a small and medium-sized reservoir. The method comprises the step of correspondingly excavatinga flip bucket, a plunge pool and a retention wall in the flowing direction of a trajectory nappe of the spillway, wherein the flip bucket is at the upstream of the trajectory nappe; the plunge pool ispositioned at a scouring pit of the trajectory nappe; and the retention wall is at the downstream of the trajectory nappe. With the adoption of the method, the energy can be dissipated; the scouringis prevented; and the construction is quick.
Owner:广东省水利电力勘测设计研究院有限公司
Arch dam flood-discharge energy-dissipating structure
ActiveCN101126232BMeet the requirements of flood discharge and energy dissipationReduce flood discharge atomization intensityBarrages/weirsPower stationWater flow
The invention discloses a flood-discharging and energy-dissipating structure for the high concrete arch dam in the gorge area, which can effectively decrease the discharging atomization in the flood discharge and can meet the requirement of draining the large water flow through the dam body in the gorge area. The arch dam flood-discharging and energy-dissipating structure is provided with an upper opening and a lower opening at the dam body, an afterbay dam is arranged at the downstream of the large dam to form a plunge pool, the upper opening adopts narrow slot falling type to drain, the water flow from the upper opening and the lower opening does not collide in the air. Through the reasonable arrangement of the position, type and the discharge angle of the upper opening and the lower opening, the drained water flow of the whole dam body is fully diffused, the water flow is considerably aerified in the air, the energy per unit area shot into the downstream plunge pool is decreased, which meets the flood-discharging and energy-dissipating requirement of the dam. At the same time, the water flow from the upper opening and the lower opening does not collide in the air, which considerably decreases the atomization intensity in the flood discharge. The invention can be widely generalized and used in the power station that has high head drop, large flow and is at the deep gorge.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
Sump dredging system and mode
ActiveCN102635133AEasy to operateWill not affect normal useSewer cleaningMechanical machines/dredgersElectricityWater flow
The invention relates to a sump dredging system and a sump dredging mode. The invention aims at providing the sump dredging system and the sump dredging mode with the advantages of convenience for operation, less energy consumption and high efficiency. The technical scheme is as follows: the sump dredging system is characterized in that a sump is internally provided with a drainage facility, a sand-containing water flow collecting pipe is buried in a place close to a lower region on the bottom of the sump; a bottom plate of the sump is provided with a slope with certain inclination, a grab bucket type dredging device is arranged above the sump and corresponding to the lowest part of the bottom plate; and a sediment density and sediment accumulation height measurement system and a sediment collection high-pressure washing system are arranged at the bottom of the sum. The sump dredging system and the sump dredging mode are suitable for water and electricity and water conservancy projects, especially suitable for dredging sediments on the bottom of a sump in an underground power plant, a dam body and a plunge pool, dredging sediments on the bottom of the sump of a water pumping pump station, and is also suitable for regions such as water taking pools of various diversion works and sedimentation basins of a sewage treatment plant.
Owner:POWERCHINA HUADONG ENG COPORATION LTD
Water supply and drainage system of plunge pool
InactiveCN101949145AReduce energy consumptionAvoid installation workBarrages/weirsRiver bedEngineering
The invention discloses a water supply and drainage system of a plunge pool with relatively low energy consumption. The system comprises a water pipe for communicating the plunge pool at the upstream of an afterbay dam and a river bed at the downstream of the afterbay dam, the water pipe is embedded in the dam body of the afterbay dam, the front end of the water pipe is led to a bottom plate of the plunge pool at the upstream of the afterbay dam, and the rear end of the water pipe is led to the river bed at the downstream of the afterbay dam; and the water pipe is provided with a control valve and a pumping device for pumping accumulated water in the plunge pool into the river bed at the downstream of the afterbay dam. The pumping device of the system can pump off the accumulated water in the plunge pool only by endowing each unit weight of accumulated water in the plunge pool with energy for raising the accumulated water to the downstream water level height of the afterbay dam from the bottom of the afterbay dam so that the energy consumption of the pumping device is saved. The water pipe is embedded in the dam body of the afterbay dam to become a permanent facility so as to avoid repeated assembly and disassembly, save the time for assembling and disassembling the pumping facility and gain more time for overhauling of an energy-dissipating building.
Owner:POWERCHINA CHENGDU ENG
Ski-jump and jet flow combined energy dissipation device
The invention discloses a ski-jump and jet flow combined energy dissipation device. The ski-jump and jet flow combined energy dissipation device is composed of an impounding reservoir, a dam crest, a dam surface, an impeller, a transmission, a generator, a high pressure water pump and a plunge pool. The generator and the impeller are coaxial. The high pressure water pump is arranged inside the plunge pool. High-velocity water flow discharged from a dam top is utilized for impacting the impeller on the overflow dam surface, the impeller rotates to drive the generator to generate electricity and supply power for the high pressure water pump in the plunge pool. The surface-shaped jet flow sprayed upwards from the water pump and the surface-shaped water flow discharged after being flipped by the overflow dam surface collide in the air and dissipate energy. The ski-jump and jet flow combined energy dissipation device has the advantage of dissipating energy by a sill, nappe convection and the plunge pool, has high energy dissipation efficiency.
Owner:嘉善永升五金厂
Ecological energy-saving septic tank
InactiveCN1712369AAchieve harmlessEnhanced bioremediation technologyEnergy based wastewater treatmentBiological sludge treatmentSludgeEngineering
An ecological energy-saving digestion tank consists of head sewage well, anaerobic pool, anaerobic filtering pool, oxidizing channel and ecological pond. Head sewage well is arranged on the top of anaerobic pool and communicated with anaerobic pool, plunge pool is set on the top of anaerobic filtering pool, and sludge pipe is inserted in head sewage well. It achieves lower environmental pollution and energy saving.
Owner:XUZHOU INST OF ARCHITECTURAL TECH
Dam for blocking mountainous area and river way mountain torrents and debris flow
PendingCN108547262ALow terrain and geological conditionsQuality assuranceBarrages/weirsMaterial resourcesEngineering
The invention discloses a dam for blocking mountainous area and river way mountain torrents and debris flow. The dam comprises at least one assembled prefabricated prestress arch, an arch ring is in an arch shape protruding towards the upstream position in the plane, and an arch foot is assembled between barricade brackets on the two sides. The prefabricated prestress arch is a prefabricated prestress concrete arch. Barricades include the side pier barricades and the middle pier barricade. Underground diaphragm wall manner construction is adopted in foundations of the side pier barricades andthe middle pier barricade, and the anti-sliding force of the dam is improved. Reinforced concrete anti-collision stone intercepting piers are arranged at the upstream position of the dam in a staggered manner. An energy dissipation tail bucket is arranged at the downstream position of the dam, a plunge pool is formed between the prefabricated prestress arch and the energy dissipation tail bucket,and an anti-scouring apron is laid at the downstream position of the energy dissipation tail bucket. The requirement of the dam to the foundations is low, stability is good, and the dam is applicableto various terrain geological conditions. The prestress arch is of a prefabricated concrete arch structure, manufacturing can be conducted in a factory in advance, direct field hoisting is conducted,construction is convenient and fast, the work period is short, and maintaining is convenient; during dam construction, construction flow guiding is not needed, and manpower and material resources aregreatly saved; and since the body form of the dam is small, the structure is simple, and the project cost is low.
Owner:CHINA WATER RESOURCES BEIFANG INVESTIGATION DESIGN & RES
Automatic trip gate
Owner:MCCREEDY C THOMAS +1
Method for reducing flood discharge atomized rain in covering mode
The invention relates to a method for reducing flood discharge atomized rain in a covering mode, and relates to the field of flood discharge. According to the technical scheme, the method for reducing the flood discharge atomized rain in the covering mode is characterized in that a shielding device is arranged above a plunge pool on the outer side of a high dam; two ends of the shielding device are fixed to bank slopes on two sides; the width of the front-and-back direction of the shielding device is 2 to 3 times of the width of a water falling point of flood discharge water in the plunge pool; the front-and-back direction is the projection of the spraying direction of the flood discharge water on the horizontal surface; and the flood discharge water of a flood discharge tunnel falls to the position under the shielding device, and the atomized rain produced by the flood discharge water under the shielding device is mostly shielded by the shielding device, so that the leakage of the flood discharge atomized rain is reduced. The shielding device is formed by covering a grid support frame with a transparent thin film. In the water flow direction, cord fabric is hung at the front endof the shielding device and drops to the water surface of the plunge pool. The upper part, the side surfaces and the front part of the flood discharge water falling point are enclosed, so that the airflow is reduced favorably, and the flood discharge atomized rain is further reduced.
Owner:SICHUAN UNIV
Connecting method of rubber water stopping band and copper water stopping sheet
Owner:YELLOW RIVER ENG CONSULTING
Overhauling arrangement structure for permanent plug of high arch dam diversion tunnel
The invention relates to an overhauling arrangement structure for a permanent plug of a high arch dam diversion channel, correspondingly relates to an overhauling method for the permanent plug of the high arch dam diversion channel and belongs to the technical field of diversion and closure construction in hydraulic and hydropower engineering. The overhauling arrangement structure includes a drainable blocking structure and an overhauling blocking structure. The drainable blocking structure is arranged at the position of an outlet of the diversion channel and includes a gallery, a vertical well platform, a draining vertical well and a water collecting well. The overhauling blocking structure is arranged in a construction adit and includes an overhauling channel and an overhauling water blocking gate. The overhauling method includes the steps that water flow in the diversion channel is completely extracted through the arranged draining vertical well, then the overhauling gate is opened through the overhauling channel so that entering the diversion channel can be achieved, and finally monitoring and overhauling of the permanent plug are achieved. According to the arrangement structure, monitoring and overhauling of the permanent plug of the diversion channel are facilitated, and the arrangement structure of safety running of a draining gallery of a plunge pool is not affected; and the structure is simple and reliable, safety is high, the investment is saved, and construction is convenient.
Owner:POWERCHINA CHENGDU ENG
Sewage treatment method
InactiveCN102464429AOptimize process flowSmall footprintMultistage water/sewage treatmentWater resourcesSand filter
The invention relates to a sewage treatment method, in particular to an urban sewage and industrial sewage treatment method. The sewage treatment method is characterized by comprising the following steps of: treating raw sewage by a lifting pump station; removing particle sands and impurities in the sewage by a grid; treating the sewage by an electrolytic bath; adding a purifying agent; mixing the obtained sewage into a distribution well by a mixer; filling the sewage into a primary sedimentation tank to purify and precipitate and increasing dissolved oxygen in the treated sewage by a plunge pool; then adding the purifying agent and mixing the sewage into the distribution well by the mixer; filling the obtained sewage into a secondary sedimentation tank to carry out secondary sedimentation and purification treatment and filling the effluent obtained after secondary treatment into the plunge pool to increase the dissolved oxygen; filtering the sewage by a sand filter and filling the obtained sewage into a pipeline; and sterilizing the sewage. The sewage treatment method has a simple and convenient process, small occupied area and low civil engineering investment cost, can completely remove organisms and has a good purifying effect. A good foundation is provided for treating the water environment and saving water resources.
Owner:XIAOJIAN TECH DALIAN
Jet flow and drop flow energy dissipation structure for overflowing of shore-side flood protection gap of gravity dam
ActiveCN106368186AImprove energy dissipation effectIncrease water flowBarrages/weirsJet flowWater flow
The invention discloses a jet flow and drop flow energy dissipation structure for overflowing of a shore-side flood protection gap of a gravity dam. A shore-side gap is arranged in a dam section close to a river bank at one side; a plunge pool is arranged downstream the shore-side gap; one side of the plunge pool is a bank slope; a shore-side platform is arranged at the top of the bank slope; a shore-side guide wall is arranged on the shore-side platform and is connected with the tail end of the shore-side gap; the shore-side platform is connected with the plunge pool via the bank slope; separating piers are arranged at the other side of the shore-side gap opposite to the shore-side guide wall and are used for preventing water flow in the gap from being turned over outwards. The radius of the shore-side guide wall is 4H to 6H; the length of the shore-side guide wall is 2H to 4H; the height of the shore-side guide wall is larger than 0.4H; the included angle of the tail end of the guide wall and the bank slope is 5 to 15 degrees; the gradient of the bank slope is larger than 1:0.3; the water depth of the plunge pool is larger than 0.2 Delta Z; H represents the difference of the highest flood protection water level and the bottom elevation of the gap; Delta Z represents a designed difference of the upstream water level and the downstream water level. The bank slope is provided with no packway. The jet flow and drop flow energy dissipation structure is good in energy dissipation effect, good in water flow condition, free of phenomenon of deflected water flow, and free of phenomenon of concentrated impact. The main flow does not wash against the bank slope, and the shore-side flow speed is small. The jet flow and drop flow energy dissipation structure is manufactured from conventional concrete, so the manufacturing cost is low.
Owner:POWERCHINA BEIJING ENG +2
Multipurpose fish breeding station wilding training system and application method thereof
PendingCN109644899AIncrease profitStrong field adaptabilityClimate change adaptationPisciculture and aquariaWater treatment systemWater channel
The invention provides a multipurpose fish breeding station wilding training system. The multipurpose fish breeding station wilding training system comprises that an ecological channel is provided with a high-level reservoir, a storage pond, an ecological pond and a sewage treatment system, wherein the high-level reservoir is connected with the sewage treatment system through a water lifting pipe,and the high-level reservoir, the storage pond, the ecological pond and the sewage treatment system form a circulating channel; in the length direction of the ecological channel, every 5-10 meters isprovided with a plunge pool; one end of the water lifting pipe is provided with a lifting pump which is arranged inside the sewage treatment system; the high-level reservoir is provided with a discharging valve; the circulating channel is arranged along a fish breeding station, which is connected with the storage pond through pipes. The multipurpose fish breeding station wilding training system can make good use of existing facilities of the fish breeding station and simulate a natural water environment to improve the utilization rate of existing facilities of the fish breeding station in China and improve the field adaptability of field-bred fishes, thereby being applicable to application and generalization.
Owner:CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
Plunge pool structure and construction method thereof
PendingCN107100145ASmall amount of workShorten the construction periodBarrages/weirsMonitoring systemRevetment
The invention provides a plunge pool structure. The plunge pool structure comprises a dam, a water tongue is arranged on one side of the dam, and the water tongue is located on the ground surface line; a concrete foot and plunge pool excavation boundaries are arranged under the water tongue, and the concrete foot and the plunge pool excavation boundaries are located under the ground surface line; one side of the concrete foot is connected with the water tongue, and the other end of the concrete foot is connected with a dam foot of the dam; one side of a plunge pool is connected with the water tongue, and the plunge pool and the concrete foot are located at the same horizontal position without being connected with each other; and the two sides of the concrete foot are provided with revetments correspondingly. By adoption of the plunge pool structure, the problem of low anti-floating stability is solved, no curtain grouting system, no drainage system, no pumping drainage system and no monitoring system is arranged, the engineering quantities of concrete, basic joint bars, steel bars, consolidation grouting, drainage holes and the like are reduced, the engineering investments are decreased, the construction period of an absorption basin is shortened, the safety risks of the construction period are reduced, and the problem of inspection of the absorption basin in the operating period is avoided effectively.
Owner:CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
Water cushion pond filling and drainage system capable of generating electricity
ActiveCN103556611BImprove the operating environmentReduce energy consumptionWater-power plantsHydro energy generationElectricityWater diversion
Owner:POWERCHINA HUADONG ENG COPORATION LTD
Micro-friction stress test simulating system and method of plunge pool water-permeable side slope plate
A micro-friction stress test simulating system of a plunge pool water-permeable side slope plate comprises a limiting box and a side slope simulating plate arranged in the limiting box, wherein the periphery of the limiting box is connected with a plunge pool side slope, gaps are reserved in the periphery and the bottom surface of the side slope simulating plate, universal wheels for limiting are adopted for the gaps reserved in the periphery and the bottom surface, a tension-compression sensor perpendicular to the side slope simulating plate and the limiting box is arranged in the side slope simulating plate, and the side slope simulating plate is vertically provided with multiple water-permeable holes in a thorough mode. The micro-friction stress test simulating system is used for stress test simulation of the high-dam plunge pool water-permeable side slope plate, the influence on a boundary friction force is reduced to the greatest degree by arranging the universal wheels under the situation that water-permeable holes and the gaps are similar in water permeation, so that the water-permeable plate moves in the direction perpendicular to the plate surface, the stress process of the water-permeable plate in a plunge pool is obtained by utilizing the tension-compression sensor, the risk that discharged flood damages the plunge pool side slope is reduced, meanwhile a construction period is shortened, and the construction difficulty and construction costs are reduced.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES +1
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