57results about How to "Improve wave resistance" patented technology

The invention relates to a fitting part in a tank truck, in particular to a waving resistance device in the tank truck and the tank truck with the same. The waving resistance device comprises a main body and a fixing base, wherein the fixing base is arranged at the top of the main body and is provided with an air inlet-outlet servo control device, and the main body is a soft air-tight capsule body. The waving resistance device is made of soft elastic materials instead of a traditional waving resistant plate made of hard materials, such as metal and the like, thereby performing the upgrade from a one-dimensional waving resistance to three-dimensional waving resistance, effectively absorbing the energy of fluid waves in the tank, reducing impact to the tank from waves, improving the effect of the waving resistance and ensuring the service life of the tank and the stable running of the tank truck.

The invention provides a sea wave sensing based water unmanned plane autonomous taking-off and landing control system. The system comprises a sea wave sensing device, a data acquisition device, an autopilot, a receiver module, a data transfer radio, a power source module and an actuating mechanism unit. The autopilot receives sea wave information provided by the sea wave sensing device, a plane gesture and track information provided by the data acquisition device and commands from both the receiver module and the data transfer radio, then performs corresponding control algorithms and distributes control commands to the actuating mechanism unit and accordingly controls the actuating mechanism unit to realize autonomous taking-off and landing of the water unmanned plane. The sea wave sensing based water unmanned plane autonomous taking-off and landing control system can performs adaptive flying control based on the sea wave state in the taking-off and landing processes, improves the anti-wave capability of the water unmanned plane, and also improves the water working capability under a high sea condition.

The invention relates to a manual seaweed transplanting method and a reef used for transplanting seaweeds, and belongs to the technical field of marine ecology. The manual seaweed transplanting method comprises the following steps: firstly manufacturing a reef formed by a reinforcing steel base and a dome-shaped algal reef matrix, wherein the surface of the algal reef matrix is provided with a rough surface beneficial for adhesion of seaweed spores; cultivating small reef blocks adhered with the seaweed spores in a laboratory, wherein the surface of small reef blocks are rough; and then transplanting the small reef blocks to preformed holes in the algal reef matrix, placing the algal reef matrix transplanted with the small reef blocks with a lifting rope to the seabed requiring to be transplanted with seaweeds, and making the seaweeds grow in the natural environment. According to the invention, the dome shape of the algal reef matrix is favorable for preventing sediments in seawater from accumulating on the algal reef to block the adhesion of the seaweed spores, and can efficiently disperse the impact of sea waves so as to enhance the wave resistance of the algal reef matrix and make the transplanting ration of the reef higher. A large scale of reefs, which are transplanted according to the transplanting method provided by the invention, can form a stable and durable algal reef group on the sea bed so as to successfully build a manual seaweed field.

The invention discloses a high-performance hybrid hullform for an amphibious aircraft. The high-performance hybrid hullform comprises a multi-bilge-line hull, two ground-effect wings and two force-bearing buoys, wherein the hull is tapering in front and rear; the ground-effect wings are symmetrically arranged at the two sides of the middle part of the hull, and the force-bearing buoys are fixed at the outer end. A non-step-fault design is adopted at the middle part of the hull, the hull is provided with three bilge lines, an upper hull between the upper bilge line and the middle bilge line and a middle hull between the middle bilge line and the lower bilge line are in the shape of a linear ramp with a bilge turn respectively, the bilge turns are arranged at the outer sides of the transverse sections, and the ramp angles of the upper hull and the middle hull range from 65 degrees to 75 degrees; and the transverse section of a lower hull is in the shape of a curve ramp. According to the high-performance hybrid hullform disclosed by the invention, the motion response of the amphibious aircraft in a wave is reduced through using the hull with the large ramp angle and multiple bilge lines; and meanwhile, an aerodynamic lift is remarkably increased and a water take-off and landing speed is reduced through using the ground-effect wings and a ground-effect lift-enhancing air cavity, and then the motion response of the amphibious aircraft in the wave is reduced and the pitching motion time of the amphibious aircraft during take-off and landing in the wave is reduced, and the anti-wave capacity of the amphibious aircraft is remarkably improved.

The invention discloses a mixed-flow device of a ship diversion propelling system, aiming at solving the problem of jet flow of the ship diversion propelling system. The mixed-flow device mainly consists of a jet pipe, a wake flow pipe and a mixed-flow pipe, wherein a nozzle of the jet pipe and an outlet of the wake flow pipe are communicated with the mixed-flow device; an inlet of the wake flow pipe is arranged at the lateral side of the jet pipe; the cross section of the jet pipe is less than that of the mixed-flow pipe; and jet flow and wake flow are acted and mixed together in a mixed-flow cavity. By comparing water flow at the outlet of the mixed-flow pipe with the water flow at the nozzle of the jet pipe, the invention reduces the speed and increases the flow so as to improve the stern flow field of the ship, reduce the wave making resistance of the stern, or improve the flow field of a propeller or a pump impeller, improve the propelling efficiency and reduce damage of vacuole and water attach. The induced velocity generated by the water flow at the outer side of the inlet of the wake flow pipe and the induced pressure converted thereby can be further used for improving the stern flow field of the ship and reducing the wave making resistance of the stern.

The invention discloses a wave resisting device for an offshore operating platform. The device comprises an air sac component (1) and a positioning component (2) which is used for positioning the air sac component (1) on a platform structural piece, wherein the air sac component (1) comprises at least one long-pipe-shaped air sac (11) which is sleeved on the platform structural piece; the air sac(11) comprises a hose (12) and connecting joints (13) which are arranged at the two ends of the hose (12); and the hose (12) is connected with the connecting joints in a sealed manner(13). The wave resisting device for the offshore operating platform has the advantages of high sea wave buffering property and good protective effects on the offshore operating platform, is safe and reliable, is easyand convenient to use and is quickly maintained.

The present invention provides a three-V type combined double float motorboat (ship and moving platform) with lifting pendant platform, light self weight, small inactive friction area with water surface, reasonable structure, high power, low energy consumption, rapid speed, good wave-resistance, long service life and smooth running. The invention can be implemented by adopting the following schemes: the motorboat (ship and moving platform) is formed from gliding float portion, platform (cabin body) portion, power portion, operation device and water injection lifting cabin portion and connecting portion of platform (cabin body) and gliding float, and the boat (ship and platform) can be made up by adopting newest synthetic fibre and composite plastics material and special process.

The invention provides a slight-splashing high-performance two-hull amphibious aircraft which comprises an aerodynamic lift type main fuselage, wings, empennages, turbofan engines and slight-splashing sliding hulls. The wings 2 are arranged in the middle of the aerodynamic lift type main fuselage. The turbofan engines are arranged on the upper position, near the aerodynamic lift type main fuselage, of the wings. The empennages are arranged at the tail end of the aerodynamic lift type main fuselage. The two slight-splashing sliding hulls are arranged on the two longitudinal sides of the lower portion of the aerodynamic lift type main fuselage. A longitudinal aerodynamic groove channel 5 is formed after the connection of the two slight-splashing sliding hulls and the aerodynamic lift type main fuselage. The aerodynamic lift type main fuselage is provided with reverse profile planing steps which divide the aerodynamic lift type main fuselage into a front fuselage body and a rear fuselage body. An upper transverse bent sliding face and a lower transverse bent sliding face are arranged in the position, at the bottom of each slight-splashing sliding hull, on the sliding face of the front fuselage body sequentially from inside to outside. The anti-wave ability of the amphibious aircraft is improved, and the amphibious aircraft has an excellent hydrostatic and wave splashing controlling ability to adapt to a more complex marine environment.

The invention discloses an air resistance-reduced ship with a front propelling plant and a skeg course control system. The major structure, common functions and basic characteristics of the conventional ship are remained, and a ship which is provided with the combined front propelling plant and the skeg course control system and reduces frictional resistance through air lubrication is specially designed. The course is controlled by thrust generated by a propeller in a skeg, a grid stepped multi-nest structure with a downward opening is arranged at the bottom, air is delivered into or discharged from nests timely through a control system and an air supply and discharge system, an isolation state between the water quantity in the nests and a hull bottom is regulated, frictional resistance is reduced, the stability of the ship is improved, a wave eliminating bow is matched with a bow propeller to change a water pressure field around the bow, and wave-making resistance is reduced. The air resistance-reduced ship with the front propelling plant and the skeg course control system has the advantages of better course control, stabilization performance and reduction of energy loss so as to effectively improve the dynamic performance and seagoing capability of the ship.

The invention relates to the technical field of tank trucks, in particular to a wave prevention device in a tank body of a tank truck, and the tank truck with the wave prevention device. The wave prevention device comprises a shell with a cavity, wherein through holes are formed on the outer surface of the shell; and the shell is spherical, square, cylindrical, conical, triangular pyramid-shaped, or rectangular pyramid-shaped and made of polyamide, thermoplastic resins, plastic or rubber. Compared with the prior art, the wave prevention device has the advantages that waves can be prevented in a three-dimensional space; a wave prevention effect is greatly enhanced; the service life of a wave prevention plate and the safety performance of the tank truck are improved.

The invention discloses an anti-wave type transport ship. By adoption of the anti-wave type transport ship, the anti-wave capacity can be improved, and the defect that transport ships have large jolt during rough sea is effectively improved. The anti-wave type transport ship comprises a water storage cabin arranged at the bottom of a cabin of the transport ship and an auxiliary anti-wave mechanism arranged on a ship body of the transport ship. The auxiliary anti-wave mechanism comprises a vertical guide sleeve arranged at the top of the water storage cabin, a floating guide rod slidably arranged in the vertical guide sleeve, a buoyancy device which is arranged at the lower end of the floating guide rod and located in the water storage cabin, anti-wave plate accommodation grooves formed in the outer side faces of the ship body, anti-wave plates arranged in the anti-wave plate accommodation grooves, horizontal guide through holes formed in the bottom faces of the anti-wave plate accommodation grooves and horizontal guide rods slidably arranged in the horizontal guide through holes. One ends of the horizontal guide rods are connected with the anti-wave plates, and the other ends of the horizontal guide rods stretch into the cabin and are connected with the upper end of the floating guide rod through connecting rods.

The invention relates to a hippocampus-shaped bulbous bow type bow structure of a marine tug. The front part of a bulbous bow of the bow structure is positioned below a bow; the front end in the front of the bulbous bow is positioned at the rear part of the head end of a deck; the bulbous bow is hippocampus-shaped; one or more horizontal thrusters are mounted at the rear part of the bulbous bow of the bow structure; each horizontal thruster transversely penetrates through the rear part of the bulbous bow. The bow structure fully takes multiple factors such as ship resistance, sailing, arrangement, horizontal thruster mounting and using functions into consideration, so that compared with an oblique straight bow, the ship sailing economy is improved; the width of a part where a bow thruster is mounted is increased, so that the mounting of the large-diameter bow thruster can be facilitated, and the bow thruster can be conveniently arranged as far forward as possible to effectively improve applied moment of the horizontal thrusters; compared with the conventional bulbous bow type bow, after being close to an FPSO, a marine platform and other marine structures to perform pushing operation, the bulbous bow is free of collision with a pushed ship or a platform when the ship is in any longitudinal floating state, so that the head structure safety of the ship is ensured.

The present invention provides a V-type multistage stepped double-semifloat gliding motorboat (ship) with light self-weight, small inactive friction area with water surface, reasonable structure, lowenergy consumption, good starting and steering performance and high wave-resisting property. The invention can be implemented by adopting the following schemes: the boat is formed from boat body, gliding portion, operation device, power portion and propeller portion, and the boat body is made up by adopting two materials of new type glass fibre reinforced plastics composite material and newest full-plastics composite material, and utilizing new production process and adopting new structure.

The invention provides a method for improving wave resistance of an amphibious aircraft based on the active flow control technology, a basic mechanical high lift device of the aircraft adopts a leading edge slat, a main wing and a trailing edge flap, a blow hole is arranged at a hinge of the trailing edge flap, and high-pressure airflow of an engine is guided to be blown to the surface of the flap through a pipeline system, so that the wave resistance of the amphibious aircraft is improved. The inner blowing type flap is formed; similarly, an air blowing hole is formed in the hinge position of the control surface of the empennage, a small engine arranged in the empennage generates high-pressure airflow, and the high-pressure airflow is guided to be blown to the control surface through a pipeline. By means of the active flow control technology, lift augmentation and empennage and control surface benefits are achieved more efficiently, the lift coefficient of the amphibious aircraft in the take-off and landing stage is increased to the maximum extent, and the wave resistance of the amphibious aircraft is improved by reducing the take-off and landing speed and the take-off and landing skating distance and guaranteeing the stable maneuverability.

The invention relates to an embankment, in particular to a power-generating embankment comprising an embankment body, a generator and a drain pipe. A buoyant box is arranged on the head sea side of the embankment body and provided with a wave inlet. An inlet of the drain pipe locates in the buoyant box. The drain pipe is provided with a power-generating impeller driving the generator. The wave side of the buoyant box is provided with a wave guide plate which guides the waves into the buoyant box through the wave inlet. The power-generating embankment is capable of converting wave power into electric energy, and the problem that the existing embankment has the single function is solved.

The invention relates to a separation device for oil exploitation and with a preliminary filter function. The separation device comprises a connection platform, a protection bar and liquid flow pipes,wherein a support rod is connected with the interior of the connection platform in a welding manner; connection holes are formed in the outer side of the support rod through chiseling; the outer sides of the connection holes are wrapped by leakage preventing pads; the protection bar is fastened and fixed at the upper end of the connection platform through a screw; a connection block is arranged on the inner side of the protection bar; a filter tank is connected with the inner side of the connection block through thermal welding; a filter basket is arranged in the filter tank. According to theseparation device for oil exploitation and with the preliminary filter function, the connecting holes are uniformly arrayed in a same parallel line direction with respect to the inside of the connection platform, the liquid flow pipe can be connected through the connection hole clamping bolts, and the leakage prevention pad outside the connection holes are capable of increasing the tightness therebetween so as to prevent oil from leaking during the flow process; the position of an axle wire of the filter basket is consistent with the position of an axle wire of the filter tank, so that the oil can enter the interior of the filter basket for secondary filtration.

The sliding motorboat with platform type cabin and double float consists of motorboat body, control unit, drive system and propeller. Compared with V-shaped motorboat, the present invention has reduced idle friction area between motorboat and water, reduced power consumption, raised stability and wave resistance, and raised speed. The design may be also used in movable float platform.