34results about How to "Reduce wave height" patented technology

The present invention relates to a thoracic aortic covered stent (100), comprising a bare stent segment (110) and a covered stent segment (120). The bare stent segment (110) comprises a bare wave-shaped ring (111); the covered stent segment (120) has a lesser curvature side region (100c), a greater curvature side region (100a), and two opposite intermediate regions (100b) located between the lesser curvature side region (100c) and the greater curvature side region (100a) respectively; and the covered stent segment (120) comprises a first proximal wave-shaped ring (121). The stent (100) further comprises a first connecting member (131), a first side connecting member (132) and a second side connecting member (133) all connected to the bare wave-shaped ring (111) and the first proximal wave-shaped ring (121), wherein the first connecting member (131) is arranged in the lesser curvature side region (100c), and the first side connecting member (132) and the second side connecting member (133) are arranged in the two intermediate regions (100b) respectively. The stent (100) when located near the lesser curvature side (22) with a relatively small radius of curvature has a connecting assembly rigidly connecting the bare stent segment (110) and the covered stent segment (120), and through the constraints thereof, the bare stent segment (110) can be effectively prevented from overturning towards the vessel wall during the release process, so that the proximal end of the covered stent segment (120) is securely apposed to the wall, thereby avoiding the “turnover” effect.

The invention provides a coast wave absorbing group pile structure which comprises a pier group which is distributed on a coast in a discrete mode. Piers of the pier group are distributed in the direction of main waves, and distribution of the piers is determined according to horizontal wave force borne by pile bodies. According to the coast wave absorbing group pile structure, reflection and diffraction on the pile bodies of the waves and inner turbulent fluctuation of fluid among the pile bodies are fully used, a moving mode of the waves is changed, wave energy is consumed, wave height is lowered, and a bottom sand starting conveying mode, a suspended sand distributing mode and a sand conveying mode under the effect of the waves are changed.

The invention provides an amphibious wheel groove drainage drag reduction and anti-sway device and an amphibious vehicle. By using the position of the rear triangle of the two wheel grooves in front of the amphibious vehicle, a drainage plate is installed at the rear side of the wheel groove, and the The angle adjustment device adjusts the angle of the guide plate to change the inflow angle and the angle of the pressure wave, thereby reducing the resistance of the whole vehicle. The invention can reduce the inflow angle at the fault and the wave-making height by installing the diversion plate, so as to reduce the wave-making resistance and the viscous pressure resistance of the amphibious vehicle, thereby reducing the total resistance of the amphibious vehicle sailing on water. The test shows that the highest resistance reduction The effect can reach 26.32%. The invention has the advantages of simple structure, small occupied space, little influence on the weight of the whole vehicle, high reliability and easy realization. The anti-roll device is integrated on the basis of the drag-reduction device, which saves space, and because the drag-reduction device and the anti-roll device move independently, they do not affect each other, which improves the smooth sailing effect of the amphibious vehicle in water.

The invention relates to a breakwater and an arrangement method for emergency rescue and taking into account wave energy supply, and belongs to the technical field of offshore engineering. It is characterized in that it includes angle marks, upper wave body, lower wave body, support beams, anchor cables and sinkers; wherein the upper wave body and the lower wave body are suspended on the water surface relying on buoyancy; the angle marks are suspended on the basis of their own buoyancy It is a hollow structural member on the water surface, and can be connected with the wave-facing ends of the upper wave-facing body and the lower wave-facing body to jointly form the top angle of the breakwater in the wave-facing direction; the support beam is a rigid member with adjustable length, fixed on the The middle position of the upper wave body and the lower wave body supports each other with the upper wave body and the lower wave body to form an A-shaped structure; the upper wave body, the lower wave body and the angle marks are connected to the sinker placed on the seabed through anchor cables Anchored on the seabed to determine the location. The invention has the advantages of simple structure, convenient disassembly and assembly, high reliability of the integral structure, remarkable wave dissipation effect and consideration of wave energy conversion, can reduce engineering energy supply cost, and is suitable for various working conditions.

The disclosure provides a wave sheltering vessel used to reduce the significant wave height of waves. The wave sheltering vessel includes a hull, a plurality of anchors, and a propeller system. A length of the hull is greater than or equal to 60 meters. A ratio of the length to a design draft of the hull is less than or equal to 6.5. A ratio of the length to a breadth of the hull is less than or equal to 3.5. A ratio of the breadth to the design draft of the hull is less than or equal to 2.3. The anchors are installed at the hull along a longitudinal direction of the hull. The propeller system is disposed at the hull.

The invention discloses a pile-type offshore embankment, a design method and an application thereof, and belongs to the technical field of coastal engineering. The layout structure of the piled offshore embankment is in the form of a sinusoidal curve. The design method includes: collecting historical data such as the coastline, water depth, and wind field near the area to be protected; determining the range of the sea area to be protected and the corresponding wave spectrum, direction spectrum and calculating Input conditions of S3; determine the main axis length L of the offshore embankment, the sinusoidal wave length (m) of the sinusoidal curve layout control elements and the sinusoidal amplitude A of the non-control elements, the single pile distance d of the control elements, the number of single piles N and the single pile of the non-control elements The width of the pile a. The sinusoidal array arrangement can effectively block the interference of long-period waves and avoid wave resonance in the area to be sheltered. At the same time, the single piles arranged in the array can effectively block the interference of short waves and expand the wave dissipation frequency from a narrow bandwidth to a wide frequency band, thereby Improve the wave-blocking efficiency of piled offshore dikes.

The invention discloses a perforated caisson vertical groyne. The perforated caisson vertical groyne comprises a caisson and a breast wall, wherein separation walls or separation plates are arranged in the caisson to form multiple cells; a caisson hole is formed in a wave surface exterior wall at the upper part of the caisson; the cell behind the caisson hole serves as a wave eliminating chamber; sand is filled in the other cells of the caisson besides of the wave eliminating chamber; the wave eliminating chamber is provided with a top plate; the top plate is provided with multiple water inlets; the breast wall is arranged at the top of the top plate; an inclined surface is arranged on a wave side of the breast wall, and is provided with multiple water outlets; and the water outlets are communicated with the water inlets formed in the top plate through pipes. The perforated caisson vertical groyne uses self kinetic energy of waves to eliminate the energy, reduces the wave force thereof, reduces the groyne back wave height, reduces the wave overtopping rate, reduces the caisson size, reduces the work amount, saves investments, is convenient to construct, can fully use self kinetic energy of water, saves the energy, and protects the environment.

The invention discloses a purification method for eliminating fine particle pollutants in near-coastal sea areas, which is set in the field of environmental treatment. The method comprises the following steps: throwing purification components in the waters of near-coast sea areas, and connecting adjacent purification components with connecting anchor ropes And on the land near the shore, there are fixed piles connected with the anchor ropes. The purification component includes a buoyant purification base. The purification base has a disc-shaped bottom plate. The first filter screen is set around, the bottom plate of the inner middle part of the cylindrical sleeve-shaped body is provided with a disc-shaped protrusion, the upper part of the disc-shaped protrusion is provided with a rotating base, and the disc-shaped protrusion and the middle part of the assembled disc Coaxial first flow holes are all provided. The invention realizes the automatic purification of nearshore water bodies, rapidly separates microplastic particles of different particle sizes in the water body and intercepts the microplastic particles for centralized treatment, and effectively improves the light transmittance of nearshore water layers.

The invention discloses an intercooler of a double-wave inner-fin structure. The interior of a radiating tube is provided with a double-wave inner fin. The double-wave inner fin comprises an upper inner fin, a lower inner fin and a flat fin in the middle. The flat fin is connected with the upper inner fin and peaks of the lower inner fin. Outermost waves at two end portions of the upper inner fin and the lower inner fin are matched with four corners R of the radiating tube in order to form a double-layer composite structure. Two ends of the flat piece are provided with signal sides or overturn sides on two sides. The overturn sides and short sides of the radiating tube are matched in order to form a double-layer composite structure. Without increasing cost, structural strength is improved.

The invention discloses a floating breakwater. The floating breakwater comprises a plurality of floating boxes which are connected to one another by connecting devices, wherein each floating box comprises an upper floating body and a lower floating body which are in contact from top to bottom and are fixedly arranged; the upper floating body is of a tortuous slope-shaped groove type steel structure, and a plurality of block-shaped energy dissipating devices are arranged on the inward bending surface of the groove of the upper floating body; the lower floating body is a rectangular body made of a high-strength polypropylene material, and a plurality of wave dissipating holes which are perforated and staggered are formed in the lower floating body; and the floating banks are provided with mooring guide rope holes which are used for connecting guide ropes so as to moor the floating boxes in water. The floating breakwater has the beneficial effects that the floating breakwater has a good wave dissipating effect under terrible ocean environments and long-period waves and is simple in structure; and the width of the breakwater is unlimited due to adoption of modular assembly, thereby facilitating offshore construction and later maintenance.

The square corrugated pipe includes corrugated pipe, positioning screws and nuts, and features that the pressed square corrugated pipe has connecting flanges welded to its ends, square stainless steel corrugated pipe of wall thickness of 0.3-0.6 mm, and the positioning screws and the corresponding nuts are set in the connecting holes of the flanges. The present invention solves the technological problems of compression capacity, flexibility, five-dimensional displacement regulation and compensation, and aperture and shape matching.