108results about How to "Increase sailing speed" patented technology

The invention discloses a nanometer composite hydrophobic hard transparent film and a preparation method thereof, belonging to the nanometer technical field. The preparation method of the nanometer composite hydrophobic hard transparent film comprises the preparation of silicon dioxide sol, the preparation of aluminium sol, the preparation of composite sol, film-plating and other steps. The hardness of the finally obtained nanometer composite hydrophobic hard transparent film of the invention can reach 5h which is detected by a QHQ type pencil hardness gauge and SL100 type static contact angle admeasuring apparatus, and the hydrophobic angle can reach 115 degrees so that the nanometer composite film has excellent mechanical properties and hydrophobic function. The obtained nanometer composite hydrophobic hard transparent film in the invention can be used on the surface of different devices so as to prevent or reduce the adhesion of steam, ice and snow and other pollutants and has broad application prospect in national defense, aviation, aerospace, everyday life and other industrial fields.

The objective of the invention is to provide a float-type energy-generating system that is able to maintain the system's body stably, without listing, while sailing, even in a strong wind, while efficiently generating electricity. The system includes a hull (4) that allows the system to be suspended underwater or to float on seawater, one or more plates (6) that receive the sea wind so as to allow the hull to sail, and one or more power generators (3) that generate electricity by rotating one or more water turbines that use water as a working medium while the hull sails.

A ship hull structure includes a main hull and a movable rearbody having an engine and a propeller. The movable rearbody is located at a lower side of a stern of the main hull, connected with an aft of the main hull to form an integral unit by a hinge linking device allowing the rearbody to pivot up and down. By a block, a crane or a winch and through a chain or a hanging wire, a pivoting angle of the movable rearbody with respect to the main hull can be adjusted and controlled. A bottom of the hull can be provided with at least one, usually plural, air cushion recess, which is filled with pressurized air to reduce a viscous force between a bottom of the ship and water. When a ship of this kind of structure is sailing, the rearbody can be lifted up by the block or the winch, allowing part of the propeller to be separated from a water surface to reduce resistance in the water that the engine can achieve a required rotational speed (RPM) in a short time. Next, the rearbody is laid down slowly, allowing the propeller to be put into the water, thereby increasing propulsion and quickly achieving a cruising speed. When the ship is sailing and encounters with wind wave, the stern will ascend by longitudinal pitching; at this time, the rearbody can descend by its own weight, with a hinge axis as a center, preventing the propeller to leave the water surface to rotate idly. On the other hand, when a bow ascends (that is, the stern descends), the rearbody will maintain a normal draught height by buoyancy of the water and the force between the water and running propeller Therefore, for the entire ship, a wetted surface area of the propeller can be adjusted automatically to keep at a best sailing condition, which can further save fuel consumption significantly. In another embodiment that the bottom of the ship is formed with the air cushion recesses, a friction force of the water can be reduced to increase a ship speed by the air cushion effect formed at the bottom of the ship.

The invention discloses a water lifesaving device comprising a casing and propellers. The two U-shaped sides of the casing are provided with power cabins for accommodating the propellers, and the topsurface and the bottom surface of the casing are respectively provided with water inlets connected with the power cabins; the end of the casing is provided with water outlets communicating with the power cabins; the propellers are arranged in the power cabins, the water suction ports of the propellers are directed toward the water inlets, the water injection nozzles of the propellers are directedtoward the water outlets; the power cabins are provided with supporting devices for supporting the propellers, the outer surface of the propellers are provided with rotating devices, and the rotatingdevices are coupled with the supporting devices, so that the propellers can perform a flipping motion in the power cabins. In the water lifesaving device, the propellers can suck water in multiple directions and provide power to the lifesaving device, so that the lifesaving device can be adapted to different weather conditions for rescue, and the lifesaving device has good power performance, highrescue efficiency, stable and reliable structure, long service life, rich functions and good practicality.

The invention relates to a waterpower propulsion system with a water absorption passageway and belongs to the technical field of waterpower aircrafts. The system comprises a water inlet, the water absorption passageway, propellers, propulsion motors and a water outlet; and the propellers are located in the propulsion motors and arranged in a multi-stage mode. According to the waterpower propulsion system with the water absorption passageway, the multi-stage-arranged propellers are adopted and arranged in the propulsion motors and are each of a non-shaft structure; through multi-stage arrangement, under the requirement that the total propulsive power is ensured, the outer diameter and size of the single propulsion motor can be reduced, and the over large space, where the motors are placed, of the water absorption passageway is avoided. Meanwhile, by adoption of multi-stage arrangement, the capacity of redundancy degree improvement is achieved, and under the condition that one propulsion motor or two propulsion motors break down, the effect that at least one propulsion motor continues to work can further be ensured.

A marine water spraying type propeller comprises a water spraying pipe body, a water inlet valve, backward water inlet pipes, a hydro-generator impeller wheel, an electric water spraying machine, backward water spraying pipes and a water outlet valve. The marine water spraying type propeller is characterized in that at least one cylindrical water spraying pipe is arranged on the outer wall, on the bottom of a ship, of a ship body, one end of the cylindrical water spraying pipe is provided with a water inlet, the other end of the cylindrical water spraying pipe is provided with a water spraying opening, the water inlet valve and water wheel blades of a hydroelectric generator are arranged in the pipe wall, close to the end provided with the water inlet, of the water spraying pipe, the water outlet valve and the electric water spraying machine are arranged in sequence in the water spraying pipe close to the end provided with the water spraying opening, the electric water spraying machine is fixed on the pipe wall of the water spraying pipe through a stand, and a closed blade water wheel is arranged in the pipe opening of the water spraying machine. The marine water spraying type propeller does not use a screw propeller for spraying, but uses hydraulic pressure for spraying, and is assisted by the rotation of the water wheel blades. Driving at high speed can be achieved, and noise can be reduced. The propeller is suitable for various ships and particularly suitable for a warship and a submarine, and quickness and sound concealing effects can be achieved.

The invention provides a waterborne flying ship which comprises a streamline shaped ship body, a power driving device comprising a centrifugal turbine, a high-speed running balance system and a rudder, wherein the centrifugal turbine is arranged at the lower part of the ship body; and turbine blades are arranged and fixed on the outer edge of a turbine hub and downwards extend to be exposed below the ship bottom. The waterborne flying ship can fly forward on water at an extremely high speed, reaction force of positive pressure is applied to the water surface by utilizing the centrifugal turbine, and the ship body is lifted up out of the water surface by utilizing the component force of the force in the upwards vertical direction, so that the ship body is separated from the water surface; and moreover, the component force of the centrifugal turbine, which is applied to the water surface in a horizontal forward direction, is basic power for driving the ship to run at a high speed. The contact area of the ship with the water and the resistance acting on the ship are obviously reduced, the running speed is greatly increased, and a high-speed, rapid and economic waterborne means of transport is provided for people.

A water-spraying thruster for ship or submarine is composed of an internal pipe, an external pipe, a fluid cavity between said internal and external pipes and with a conic head, a spray tube on said external pipe and a central water inlet tube, which are communicated with said fluid cavity, and a motor driven water pump connected to said water inlet tube. When water is sprayed out of the spray tube a huge push force is generated.

The invention belongs to the technical field of water wheel motors, and particularly relates to a water wheel device and a ship including the same. According to the water wheel device with multiple functions suitable for the ship, power generation is carried out by utilizing tidal current energy, the functions of propulsion and anti-rolling are realized, the pollution of the ship to the marine environment is reduced, the endurance of the ship is improved, the navigation speed of the ship is increased, and the stability of the ship is enhanced. According to the water wheel device and the ship including the same, a hydraulic expansion and retraction device controls the expansion and retraction of the water wheel device, and the water wheel device is capable of extending out of the ship bodywhen the water wheel device is used and retracting into the ship body when the water wheel device is not used, so that the normal navigation of the ship is not affected by the water wheel device, andthe embedded structure of the water wheel device is simple and practical and convenient to maintain and replace. According to the water wheel device and the ship including the same, the water wheel device is efficiently utilized under the existing ship condition, the functions of power generation, propulsion and anti-rolling are integrated, and the use of the inner space of the ship body is reduced.

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 discloses a water surface garbage salvage ship for keeping a reservoir clean. The ship comprises a ship body and a first cavity which is located in the ship body and provided with a downward opening, wherein the first cavity is arranged in bilateral symmetry, a paddling device capable of enabling the ship to sail on the water is arranged in the first cavity. The water surface garbagesalvage ship is advantaged in that the paddling device enables the ship to rapidly sail on the water surface, the salvaged garbage can be compressed through a sliding extrusion plate, the volume occupied by the garbage can be effectively reduced, a large amount of water in the garbage can be extruded out, the extruded water flows out through water flowing holes, the weight of a work box is reduced, and thereby the garbage salvage ship has the high sailing speed, and sweeping efficiency is improved.

The invention discloses water area rescue equipment. The water area rescue equipment comprises a rescue cabin body, and the rescue cabin is composed of a cabin head, a cabin body and a cabin tail. A wireless remote control system, a power battery, an air sucking and exhausting system and a first submergence system are arranged in the cabin head. The wireless remote control system is used for receiving wireless signals and sending out corresponding instructions through calculation. A second submergence system and a rotating mechanical arm are arranged in the cabin body. The first and second submergence systems are connected with the air sucking and exhausting system by the wireless remote control system, and the rotating mechanical arm is connected with a driving motor to control the opening and closing of the rotating mechanical arm by the wireless remote control system. A power system is installed in the cabin tail, and the power system is connected with the power battery through thewireless remote control system. According to the water area rescue equipment, a rescue mechanical arm can be remotely controlled to carry out rescue instead of rescue or searching under all-weather and all-terrain entering water for rescuers, so that the rescuers are prevented from accidental accidents in the rescue process.

The invention provides a marine micro-plastic collection device, and belongs to the technical field of micro-plastic collection. The device comprises a ship body, two circular pipes and a rotating mechanism, the two circular pipes are respectively located at the left side and the right side of the ship body correspondingly, the length directions of the two circular pipes are consistent with the length direction of the ship body, every circular pipe is horizontally provided with supporting rods, the free ends of the supporting rods are hinged to the ship body, a water inlet is arranged at one end, close to the head of the ship body, of every circular pipe, a water outlet is arranged at one end, close to the tail of the ship body, of each circular pipe, three filtering mechanisms are sequentially arranged in every circular pipe from the corresponding water inlet to the corresponding water outlet, the three filtering mechanisms can sequentially filter micro-plastics from large to small, the rotating mechanism is arranged on the ship body structure, and the rotating mechanism can drive the two round pipes to rotate in the same direction and in the opposite directions at the same time.The device can quickly collect the micro-plastics in the ocean, and is simple and efficient.

The invention relates to a ship form for a semi-submersible type hoisting pipe-laying ship. A ship body comprises an upper platform, a plurality of upright columns and two lower floaters, wherein the upright columns are fixed at the two sides under the upper platform and are arrayed in parallel; the lower floaters are fixed at two sides, are arrayed in parallel and are connected to the upright columns; and a crane is fixed on the tail part of the upper platform. The ship form is characterized in that a centrum structure expanding outwards from bottom to top is formed by the joints of the upper parts of the upright columns on the stem and the upper platform; the outer sides of the lower edges of the upright columns are matched with the deck molded lines of the lower floaters; the upper sides of the upper edges of the upright columns are aligned with the side boundaries of the upper platform; the joints between the bottoms of the upright columns and the lower floaters are in bulbous bow arch-shaped natural transition; and after being connected in such a manner, the ship form of the stem is of a streamline structure. The ship form for the semi-submersible type hoisting pipe-laying ship can be used for maximally reducing the water resistance and improving the routing speed of the pipe-laying ship under the condition of ensuring the structural strength and buoyancy of the ship body.

The invention provides an annular flow guide gate for a ship. The annular flow guide gate is characterized by comprising a left side flow guide pipe, a right side flow guide pipe, left side guide vanes and right side guide vanes; the upper end of the left side flow guide pipe and the upper end of the right side flow guide pipe are fixed to a hull through a reinforcing structure, and the lower end of the left side flow guide pipe and the lower end of the right side flow guide pipe are fixedly connected to the hull; one end of each left side guide vane is installed on the inner side of the left side flow guide pipe, and the other end of each left side guide vane is installed on the hull in the radial direction of a propeller; and one end of each right side guide vane is installed on the inner side of the right side flow guide pipe, and the other end of each right side guide vane is installed on the hull in the radial direction of the propeller. By the adoption of the annular flow guide gate, the wake flow field of the hull can be improved, the losses of the main machine output power are reduced, the efficiency of a thruster is improved, and the navigation speed of the ship is increased. The annular flow guide gate has the beneficial effects of being simple in structure and convenient to install.

An aeroamphibious aircraft comprises a drive system assembly. A machine body of the aircraft is composed of two parts of a machine head and a fuselage, and a lifting rudder is arranged on the machine head; an air inlet valve which is used for controlling air inflow and composed of two valve leaves hinged on a shaft is arranged on an airflow inlet at the bottom part of the machine head, and airflow outlets are formed on the left and the right side surfaces of the machine head; a triangular vertical wing is arranged on a top plate at the back part of the fuselage; a fixed horizontal wing and a telescopic movable horizontal wing are arranged at the tail part of the fuselage; left and right wings are hinged on two waists of an isosceles trapezoid at a bottom plate, and two flaps are hinged on two waists of an isosceles triangle at the bottom plate; and four wheels are arranged on the bottom plate. The aeroamphibious aircraft solves the lift control during the flight from a plurality of aspects and solves the problem of reverse buoyancy during the land driving and the surface navigation by the unique design. The aeroamphibious aircraft can be applicable to the production of practical transportation tools or the production of toys.

The invention discloses a ship with a hydrofoil wing. The hydrofoil wing capable of loading is arranged below a ship body. The ship can control a working angle of the hydrofoil wing in a travelling process; the ship body is adjusted to be ascended, descended and balanced and the ship is loaded by the hydrofoil wing in a high-speed navigation process; and after a building above a deck is closed, the ship body can enter water. The ship with the hydrofoil wing has a simple structure, and has an excellent seaworthiness performance and the navigation speed of the ship can be extremely improved.

The invention discloses novel multifunctional shrimp automatic feeding apparatus. The apparatus comprises a ship body; viewing glass is arranged at a central position on one side of the outer surfaceof the ship body; propeller blades are arranged at the bottom of the ship body; an oxygen booster is arranged at one end, close to the propeller blades, of the bottom of the ship body; a solar photoelectric conversion device is arranged on the top of the ship body; one side, close to the solar photoelectric conversion device, of the ship body is provided with a driving device; one side, close to the driving device, of the ship body is provided with a bait stirring barrel; the bait stirring barrel is rotationally connected with a bulk material barrel through a feeding pipe; and the bottom of the bulk material barrel is provided with a discharging pipe. The invention relates to the technical field of aquaculture equipment. The novel multifunctional shrimp automatic feeding apparatus is apparatus which can be used to automatically carry out uniform feeding on the shore of a shrimp pond; a solar panel can be utilized to carry out underwater oxygenation; and meanwhile the feeding conditionof feed can be monitored in real time, so that the influence on the growth of shrimp groups by serious eutrophication of a water body is avoided.

The invention discloses a screw propeller protection cover, which is formed by an air guide sleeve supporting part and a tensioning and fixing part. An air guide sleeve is formed by rolling and welding a steel plate; the supporting part is formed by support rods and a support rod base; one end of each support rod is fixedly connected with the support rod base; the other end of each support rod is fixed onto the air guide sleeve; the tensioning and fixing part comprises pull rod locating rings and pull rods; one end of each pull rod is fixedly arranged on the corresponding pull rod locating ring; and the other end of each pull rod is arranged on the air guide sleeve. According to the screw propeller protection cover provided by the invention, the phenomenon that a screw propeller hit and cut a buoyancy ball so as to damage the buoyancy ball can be prevented, the sailing speed of a ship can be improved, the occurrence rate of the phenomenon that objects such as a fishing net and a mooring rope wind the screw propeller can be reduced, and the screw propeller protection cover can be soaked in sea water for a long time without being corroded, has sufficient strength and rigidity, cannot produce plastic deformation caused by collision of the buoyancy ball to damage the screw propeller, is convenient to install without the need for disassembling any parts of the screw propeller, is light in dead weight so as to be convenient to transport and seldom increase the dead weight of the ship, and is simple in structure, and economic and practical.

The invention discloses a power generation propulsion roll-weakening integrated device suitable for ships. The power generation propulsion roll-weakening integrated device suitable for the ships comprises a push rod and a power generation propulsion roll-weakening system, the push rod is connected with the top end of a rotary device, and the bottom end of the rotary device is connected with a linear motor through a rotary shaft. The power generation propulsion roll-weakening system comprises a generator, an electric motor, a water turbine and a propeller, the propeller is connected with the front end of the electric motor through a connecting rod, the water turbine is connected with the front end of the electric motor through the connecting rod, the electric and the rear end of the generator are fixed through a second support, one end of the second support is connected with the linear motor, and the other end of the second support is connected with a first support. The first support isenclosed on the outer side of the propeller and the water turbine and fixed through the linear motor, and fixing devices are mounted on the outer side, opposite to the propeller and the water turbine, of the first support. According to the power generation propulsion roll-weakening integrated device suitable for the ships, in addition to using tides to generate electricity, the functions of propulsion and weakening roll can further be achieved, the marine environmental pollution is reduced, the ship cruising ability is improved, the ship navigation speed is sped up, and the ship stability isenhanced.

A ship hull structure includes a main hull and a movable rearbody having an engine and a propeller. The movable rearbody is located at a lower side of a stern of the main hull, connected with an aft of the main hull to form an integral unit by a hinge linking device allowing the rearbody to pivot up and down. By a block, a crane or a winch and through a chain or a hanging wire, a pivoting angle of the movable rearbody with respect to the main hull can be adjusted and controlled. A bottom of the hull can be provided with at least one, usually plural, air cushion recess, which is filled with pressurized air to reduce a viscous force between a bottom of the ship and water.

The invention discloses an amphibious scientific investigation robot. The robot comprises a detection vehicle body and water surface rotors, movable crawler belts are arranged right under the detection vehicle body, control magnets are arranged in the detection vehicle body, the water surface rotors are installed on the left side and the right side of the detection vehicle body, a solar cell panelis arranged right above the detection vehicle body, a lifting equipment support is arranged on one side of the solar cell panel, a storage platform is arranged on one side of the lifting equipment support, a mechanical arm is fixed to the outer side of the detection vehicle body through bolts, a PTC heating box is welded and fixed to the bottom in the detection vehicle body, and battery packs arearranged on the left side and the right side of the PTC heating box. According to the amphibious scientific investigation robot, movable crawler plates and magnetic hasps are adopted, the outer sidesof the movable crawler plates are attracted and fixed through the magnetic hasps, the movable crawler plates can be conveniently disassembled and replaced, and the flexibility and convenience of thedevice in the using process are improved.

The invention discloses a ship with side wings, and belongs to the field of ships. The ship is characterized by comprising the ship wings, a ship body, an airplane engine and a main ship power device. The ship wings are arranged on the left side and the right side, above the water surface, of the ship body, one or more airplane engines are arranged on the portions, above the water surface, of the ship wings or the ship body, and the main ship power device is arranged on the portion, below the water surface, of the tail portion of the ship body. The ship has the advantages that resultant force of an air pressure difference, ground effect lift force and buoyancy force of water is used in a comprehensive mode to lift the ship body, and resistance of the ship during sailing is reduced; the airplane engine and the main ship power device are simultaneously used for serving as a power mechanism of the ship during sailing, and sailing speed of the ship is increased on the premise that large carrying capacity of the ship is not weakened.

The invention discloses a novel liftable semi-submersible yacht. The invention comprises two buoyancy cabins, a passenger cabin and a control terminal. The buoyancy chamber includes a streamlined housing, ballast tank, motor, propeller, lifts and batteries, the streamlined enclosure provides buoyancy, the ballast tank drains and sucks water to control the volume of buoyancy tank flooding, the motor and propeller are used to propel the yacht forward, backward, and steering, the lift is used to adjust the position of the passenger compartment (float, submerge), and the battery is used to providepower to propulsion, lift, control, and the like. The invention can realize the high-speed and stable navigation on the water surface and the sightseeing effect of multiple angles under the water surface. In addition, the new liftable semi-submersible yacht has the advantages of low cost, disassembly, easy transportation and maintenance compared with the large-scale sightseeing boat.

A ship maneuvering device rotates a propeller at a lower rotational frequency than the rotational frequency of the minimum idling speed of an engine. A control device has a crawling speed navigation mode. A crawling speed navigation mode button that selects whether or not to execute the crawling speed navigation mode is connected to the control device. When the crawling speed navigation mode is selected, and the amount of operation of a joystick lever is at or beneath a baseline amount of operation Ms, the control device causes the rotational frequency N of the engine to be the rotational frequency Nlow of the minimum idling speed, and in accordance with the amount of operation of the joystick lever, varies the duty ratio D, which is the fraction of time T1 that a main clutch is engaged in a predetermined cycle T, within a range of no greater than 100%.

The invention discloses a low-water-resistance submarine. The low-water-resistance submarine comprises a submarine body. The low-water-resistance submarine is characterized in that a drainage channel is formed in the submarine body in the extension direction of the length of the submarine body. According to the low-water-resistance submarine, the drainage channel is formed in the submarine body, the underway submarine forms negative pressure in the drainage channel, partial seawater at the front end of the submarine flows through the outer surfaces of the two sides of the submarine body, the other part of the seawater rapidly passes through the drainage channel in the submarine body and is directly discharged through the tail of the submarine body, the seawater passing through the outer surfaces of the submarine is reduced, the low water resistance of the underway submarine is obviously reduced, and the cruising speed of the submarine is increased.

The invention discloses a device mounted on ship for reducing sailing resistance, which comprises an air compressor arranged in the ship body and a bubbling pipe arranged on the outer side of the ship bottom along a keel line. One end of the bubbling pipe is connected with an air outlet of the air compressor by a pipeline. The bubbling pipe is located beneath the water surface. The device has the following advantages: 1, the device is used for reducing the friction resistance between the ship body and water, which is not as good as the air cushion manner but easier than the air cushion manner in implementation, the sailing speed of the ship is enhanced greatly without the great change on the ship body, and the fuel oil is saved in abundance; 2, the device is simpler and can reduce the friction resistance between the ship body and water in use, and the device can be used in various ships conveniently, even supersized ships and also can be used in the improvement of various old ships easily; and 3, the device only needs low cost.

The invention relates to a turbine jet-type ship propulsion system which comprises a wave inlet pipe, an engine, a turbo, a gearshift, a transmission system and a jetteau, wherein, one end of the turbo is connected with the wave inlet pipe and the other end is connected with the jetteau; the engine drives the turbo through the transmission system and the gearshift; waves flow into the turbo through the wave inlet pipe and impact the turbo, both the engine and the waves drive the turbo to rotate to cause high-speed water flow which is jetted from the jetteau to boost the ship to move forward at a high speed. The turbine jet-type ship propulsion system can ensure the ship to have high navigation speed and even ultrasonic cruising speed and can realize high usage of energy by making full use of the energy of waves.

The invention discloses a spraying device of an unmanned aerial vehicle (UAV) for pesticide spraying operations. The spraying device of the UAV comprises a pesticide box, the spraying device and supporting legs which are all arranged on a UAV body, wherein the pesticide box is connected to the bottom of the UAV body; the supporting legs are fixedly arranged at four corners of the bottom of the UAVbody; the spraying device is arranged at the left end of the pesticide box; and the spraying device comprises a spraying box, a sealing plate and spraying holes. The spraying device of the UAV achieves the purpose of increasing the amount of pesticide spraying by controlling the sealing plate to move to the left to reveal most of the spraying holes without the need for decelerating the UAV so asto replace a method for increasing the amount of pesticide spraying by speed control and repeating spraying in the prior art, thereby accelerating the process of agricultural operations. When pesticides are sprayed, the pesticides are atomized in a rotating manner under the cooperation among the spraying holes, atomizing plates and a high-pressure pump, so as to increase the spraying area at one time and increase the efficiency of the pesticide spraying of the UAV, so that the spraying device of the UAV is suitable for popularization.

The invention belongs to the technical field of metal surface treatment and modification and particularly relates to a preparation method of an aluminum-based liquid injection type drag reduction surface. The preparation method comprises the following specific steps: (1) preparing a micron-sized rough surface on an aluminum surface through a chemical etching method; (2) generating a zinc-aluminum oxide thin film through a hydrothermal synthesis method and forming a micro-nano cooperative binary structure on the aluminum surface; (3) modifying with a low-surface energy substance to form a super-hydrophobic surface; (4) injecting lubricating oil into the super-hydrophobic surface to form the injection type drag reduction surface. The prepared injection type drag reduction surface has wetting resistance to water, alcohol, rapeseed oil, industrial white oil and other liquid, a contact angle for the water is about 110 degrees, a sliding angle is less than 3 degrees, and the surface has a good drag reduction effect on the water, the alcohol and the No. 15 industrial white oil. The preparation method provided by the invention is simple and practical, and low in requirements for equipment; a used chemical etching and hydrothermal synthesis technology is relatively mature, so that the preparation of the large-area drag resistance surface can be realized, and industrial manufacture is easy to realize.