57results about How to "Improve energy dissipation efficiency" patented technology

The invention relates to a slit type fishway experimental device with a plurality of stages of falling sills and grooves. The device mainly comprises a water inlet system connected with a water circulation system, a water retaining system connected with the water inlet system, and a water outlet system connected with the water retaining system. A water flow flows into the water inlet system through a ground water tank of the water circulation system, flows into a water tank of the water retaining system through a water flow buffer tank in the water inlet system, flows from a tail pond in the water inlet system into an underground pond through the water tank, and flows back into the ground water tank of the water circulation system through a draft tube.The water flow of the ground water tank is controlled by an upstream manual control valve, and the water flow of the tail pond is controlled by a downstream manual control valve. The device provided by the invention adopts the water circulation system, can recycle experimental water and reduces an experimental water volume and cost; three stages of falling sills are in fit with grooves so as to relatively more equally distribute energy dissipation to each energy dissipation part, improve the energy dissipation efficiency and reduce the degree of disorder of the water flow; and in a controllable range of the water flow, the flow rate and flow regime of the water flow are relatively closer to natural conditions, so a fish putting experiment meets actual conditions.

The invention relates to a vertical clearance type fish passing effect experimental system which comprises a water inlet system connected with a water circulation system, a water blocking system connected with the water inlet system and a water outlet system connected with the water blocking system. The water circulation system comprises a water suction pump, an overground water pool, an underground water pool, an upstream control valve and a downstream control valve. The water inlet system comprises an upstream flashboard and an upstream fish resting pool. The water blocking system is composed of a plurality of stages of fishponds. The water outlet system is composed of a downstream fish resting pool, a downstream water flow buffering box and an underground water pool. The vertical clearance type fish passing effect experimental system can be used for studying and analyzing hydraulics turbulent energy dissipation problem, a fish migration problem and hydraulics experimental model demonstration, due to the fact that the experimental system and an actual fishway partial project are built with a proportion of 1:1, the flow regime of the water flow in a fish passing facility is truly reflected, and the reliability and the accuracy of a water flow field in a fishway and the analysis of the fish passing effect are further guaranteed.

The invention relates to a shaft with the vertical eddy-flow energy dissipaters of hole stoppers. The problems of low energy dissipation rate, difficult aeration of a wall face, large vibration of a shaft and the like, which occur in an eddy-flow shaft of a traditional high dam with a high water head and large flow rate, can be effectively solved, so that the energy dissipation rate of a drainage passage is enhanced, and the phenomena of vibration of a shaft and cavitation, cavitation corrosion and destruction of a wall face are also reduced or avoided. The shaft with the vertical eddy-flow energy dissipaters of the hole stoppers is characterized in that a volute chamber is communicated with a water diversion channel by a water inlet on the volute chamber, the upper end of the volute chamber is provided with a vent hole, the lower end of the volute chamber is provided with a transition section, the lower end of the transition section is connected with a cylindrical shaft section, a plurality of sections of hole stopper bodies arranged at intervals are arranged on the shaft section, the bottom end of the shaft section is provided with a water cushion pool, and the upper end of the water cushion pool is provided with a water outlet section communicated with the shaft section; according to the shaft with the vertical eddy-flow energy dissipaters of the hole stoppers, the shaft section is designed into the eddy-flow energy dissipaters of hole stoppers arranged at intervals, so that the energy dissipation efficiency of water flow can be increased, and the problems of cavitation corrosion and cavitation, which are easy to occur in a traditional eddy-flow shaft, are avoided; and meanwhile, the vibration of the shaft can be effectively reduced.

The invention relates to a laminated self-adaptive drip irrigation emitter and a use method thereof; the laminated self-adaptive drip irrigation emitter is characterized by comprising a emitter shell body; both ends of the emitter shell body are respectively provided with a butting joint; two groups of arc tooth-shaped energy dissipation runners are arranged on the outer wall of the emitter shell body; a structure area and a buffer area are arranged between the two groups of arc tooth-shaped energy dissipation runners; positions on the two groups of arc tooth-shaped energy dissipation runners which are close to the structure area are provided with wall surface water inlets which are communicated with the inside of the emitter shell body, and the positions of the two groups of arc tooth-shaped energy dissipation runners which are close to the buffer area are provided with outlets which are communicated with the buffer area; both ends of the outer wall of the emitter shell body are respectively provided with a circle of water collection runner which is communicated with the buffer area; a capillary is wrapped outside the emitter shell body, and water outlets are arranged on one or two ends of the water collection runner on the capillary; positions in the emitter shell body which are close to butting joints on both ends are respectively provided with a water inlet and outlet laminate; two energy dissipation laminates are arranged between the two water inlet and outlet laminates; an elastic diaphragm is arranged between the two energy dissipation laminates; and the wall surface water inlets are arranged between the two energy dissipation laminates.

The invention relates to a degradable anti-clogging underground drip irrigation pipe and a manufacturing method thereof. The degradable anti-clogging underground drip irrigation pipe is characterized by comprising a drip irrigation pipe, and a plurality of irrigation emitters are arranged on the inner wall of the drip irrigation pipe at intervals; drip irrigation ports are arranged on the drip irrigation pipe in the positions corresponding to water outlets of the irrigation emitters; each irrigation emitter comprises an upper irrigation emitter piece and a lower irrigation emitter piece buckled together; two grid water intake regions are arranged on the bottom face of the upper irrigation emitter piece at intervals, one set of grid water intake ports are arranged in each grid water intake region, and one circle of roundabout and zigzag flow passage is arranged on the periphery of each grid water intake region; one sides of the two circles of roundabout and zigzag flow passages are communicated via a first-stage flow passage, and the first-stage flow passage also communicates the two grid water intake regions; the other sides of the two circles of roundabout and zigzag flow passages are communicated via a converging flow passage, and a pressure compensating region is arranged in the converging flow passage; a water outlet is arranged on the lower irrigation emitter piece in the position corresponding to the pressure compensating region; and a pressure compensating piece is arranged between the pressure compensating region and the water outlet, and the pressure compensating piece is fixed on the inner edge of the pressure compensating piece via two points.

The invention discloses a bottom-sudden-expansion gyrating shaft well flood discharging tunnel. The flood discharging tunnel comprises a lock chamber, an upper flat section, a volute chamber, a contraction section, a shaft well vertical section, a slope section and a flood discharging tunnel body. A sudden-expansion vertical section is disposed on the vertical lower portion of the shaft well straight section; the axes of the sudden-expansion vertical section and the shaft well vertical section are located on the same straight line, and the diameter of the sudden-expansion vertical section is larger than that of the shaft well vertical section; the sudden-expansion vertical section is connected with the shaft well vertical section through a connecting section, and the connecting section isin smooth transition connection with the shaft well vertical section; an outlet of the shaft well vertical section is correspondingly connected with an inlet of the connecting section; an outlet of the connecting section is correspondingly connected with an inlet of the sudden-expansion vertical section; the bottom of the sudden-expansion vertical section is sealed; an outlet is formed in the sidewall of the sudden-expansion vertical section; and an inlet of the slope section is correspondingly connected with the outlet of the sudden-expansion vertical section so that the slope section communicates with the sudden-expansion vertical section. The flood discharging capacity of a gyrating shaft well is improved, the energy dissipation efficiency and effect are improved, and the flood discharging burden of an existing gyrating shaft well flood discharging tunnel is reduced.

The invention discloses a combined energy dissipator. The combined energy dissipator comprises a plurality of energy dissipator bodies which are arranged side by side, and each energy dissipator bodycomprises an overflow dam, energy-dissipation steps, flaring piers and a stilling pool, wherein the step profile of each energy-dissipation steps is shaped like the lower part of an ellipse, the upperend of the energy-dissipation steps is connected with the top of the overflow dam, the lower end of the energy-dissipation steps is connected with the front ends of the flaring piers, and the rear ends of the flaring piers are connected with the stilling pool through inverted arc sections. Gate piers are arranged between the energy dissipator bodies, and the gate piers keep extending to the rearends of the flaring piers from the front ends of the overflow dams. By means of the combined energy dissipator, the lengths between the energy-dissipation steps and the stilling pool can be effectively reduced, the engineering quantity is reduced, the engineering cost is reduced, and energy loss can be efficiently reduced.

The invention discloses an overflow weir and elastic force type stilling pool combined energy dissipation structure and an energy dissipation method. The overflow weir and elastic force type stillingpool combined energy dissipation structure comprises an overflow weir and a stilling pool, the overflow weir comprises a WES straight line section and a WES ogee section, the WES straight line sectionis connected to the WES ogee section, a rotating shaft part is arranged at the joint, a hydraulic jacking device is arranged at the bottom of the tail part of the WES ogee section, the tail part of the WES ogee section of the overflow weir is connected to the stilling pool, the stilling pool comprises a stilling pool head part, a stilling pool middle part and a stilling pool tail part, the tail part of the WES ogee section of the overflow weir is connected to the stilling pool head part, and more than one rubber support is arranged under a base plate of each of the stilling pool head part, the stilling pool middle part and the stilling pool tail part. According to the overflow weir and elastic force type stilling pool combined energy dissipation structure and the energy dissipation method, the ascending height of the hydraulic jacking device is adjusted, so that the height difference between the WES ogee section of the overflow weir and the stilling pool head part can be adjusted, thepurpose of energy dissipation can be achieved, and in the pouring process, the rubber support are arranged under the base plate of each of the stilling pool head part, the stilling pool middle part and the stilling pool tail part, so that energy dissipation can also be carried out.

The invention discloses a stepped graded spillway with an energy dissipation effect, and belongs to the technical field of water conservancy and hydropower building engineering. The spillway comprises a first-stage stilling pool, a first-stage chute, a second-stage stilling pool, a third-stage stilling pool, a second-stage chute, a fourth-stage stilling pool and an apron which are sequentially arranged from upstream to downstream, the upstream side of the first-stage stilling pool is connected with a flood discharge tunnel, and the downstream side of the apron is smoothly connected with an original river channel. The spillway is arranged at an outlet of the spillway tunnel, and spillway water flows through the multi-stage stilling pool and the multi-stage chute to fully dissipate energy and then is discharged into an original river channel, so that scouring to the original river channel is relieved, and the safety of downstream buildings is guaranteed; meanwhile, due to the fact that the first-stage stilling pool, the first-stage chute, the second-stage stilling pool, the third-stage stilling pool, the second-stage chute and the fourth-stage stilling pool are each of a closed structure in the transverse direction, flood discharge atomization can be prevented from being caused in the energy dissipation process.

The invention belongs to the technical field of hydraulic engineering, and discloses a combined energy dissipation wall for hydraulic engineering. The combined energy dissipation wall for hydraulic engineering comprises a wall body, wherein a mounting groove is formed in the wall body, four auxiliary oil cylinders are fixedly mounted at the bottom of an inner cavity of the mounting groove, a base is fixedly mounted at the tops of the auxiliary oil cylinders, a main oil cylinder is fixedly mounted at the top of the base, and a limiting ring is fixedly mounted on the outer surface of the top of the main oil cylinder. According to the combined energy dissipation wall for hydraulic engineering, when oncoming impact water impacts a cambered surface wall through the cambered surface wall, the flowing direction of the oncoming impact water can be changed, the flowing direction of the oncoming impact water can be changed, the oncoming impact water flows downwards, the oncoming impact water directly impacts the inclined surface of a buffering plate, and the buffering plate moves downwards under pressure, so that a damping spring and a hydraulic mechanism which are lowered are driven to buffer water pressure, impact energy of water energy is partially converted into heat energy and elastic potential energy of the damping spring, then partial energy of water flow is converted, and the energy is counteracted.

The invention discloses a stilling pool with a continuous incident angle. The stilling pool with the continuous incident angleconsists of an inflow section, a stilling pool, and a tail sill, wherein the inflow section, the stilling pool, and the tail sill are sequentially arrangedin the water flow direction, diffuser sills are arranged on a bottom slope of the tail end of the inflow section, and the two diffuser sills are symmetrically arranged on the left and right sides of the inflow section; the upper surface of each of the diffuser sills is a circular arc surface in the direction of the water flow, the upper surface of each of the diffuser sills is in smooth engagement and transition with the bottom slope, and the height from the corresponding bottom slopeincreases gradually in the water flow direction; the lower surface of each of the diffuser sills is fixedly connected with the corresponding bottom slope, one side wall of each of the diffuser sills is fixedly connected with the side wall of the corresponding inflow section, the width of each of the diffuser sills in the direction of the water flow graduallydecreasesin a linear mode until decreases to zero at the tail end of the inflow section, thus a flared groove is formed in the middle of the tail end of the inflow section. According to the stilling pool with the continuous incident angle, the mixing effect of water body in the stilling pool and the energy dissipation efficiency of the stilling poolcan be greatly improved.

An ecological protection slope for preventing geological disasters comprises a slope body provided with multiple layers of steps, protection structures are arranged on the steps of the slope body, the protection structures are a plurality of waste tires which are continuously and horizontally arranged and fixed to the steps, the waste tires between the adjacent layers of steps are tightly arranged in a staggered mode, the front ends of the waste tires stretch out of the corresponding steps, the front ends of the waste tires stretch out of the corresponding steps. a nutrient soil layer and a cobblestone layer are arranged in each waste tire from bottom to top, deep root system plants are planted in the nutrient soil layers, annular water absorption layers surrounding the bottoms of the nutrient soil layers are arranged below the nutrient soil layers, and the annular water absorption layers are arranged on the tire sides of the lower edges of the waste tires. The waste tires are reasonably applied to disaster prevention engineering, the waste tires can be directly used as construction materials without any treatment, the problem of environmental pollution caused by waste tire treatment in the past is solved, and meanwhile the method is convenient in mounting, high in working efficiency, low in cost, economical and environmentally friendly.

The invention discloses a novel spillway energy dissipation system with an arc-shaped cylindrical side wall. The novel spillway energy dissipation system slightly scours downstream riverways and bank slopes, has a low cost, a simple and compact structure and high flood discharge capacity, is free from flood atomization, shortens the length of a downstream stilling pool, has a long service life, is resistant to impact, is high in durability, and organically combines energy dissipation by trajectory jet, ladder energy dissipation, arc-shaped cylindrical side wall energy dissipation, energy dissipation by surface flow and energy dissipation by underflow into a whole. The novel spillway energy dissipation system consists of a transition section, a step, an arc-shaped cylindrical side wall, a flip bucket, sawteeth and an energy dissipation ridge. A water flow reaches the step and the arc-shaped cylindrical side wall section through the transition section, the flip bucket is connected to the tail end of the step to pick the water flow to the downstream sawtooth section, the energy dissipation ridge is connected behind the sawtooth section, and the water flow finally enters the riverway through the energy dissipation ridge.