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CN-224225240-U - Ship air drag reduction device

CN224225240UCN 224225240 UCN224225240 UCN 224225240UCN-224225240-U

Abstract

The utility model provides a ship air drag reduction device, which comprises a ship flat bottom, wherein the bottom of the flat bottom is divided into a plurality of independent air cavities through a plurality of crisscrossed separation sectional materials, two independent air cavities which are adjacent transversely are communicated with each other through throttling holes formed by the separation sectional materials, and air inlet packaging parts are arranged in one of the air cavities which are adjacent longitudinally; according to the utility model, the plurality of crisscrossed separation sectional materials are arranged at the bottom of the flat bottom of the ship, the plurality of independent air cavities are formed by separating the flat bottom of the ship, and the independent air cavities reduce the escape route of air, so that the escape quantity of air is obviously reduced, the air inlet packaging piece is arranged at the bottom of the flat bottom through the watertight flange sealing piece, the touch damage is prevented, the service life of the sensor can be effectively ensured, meanwhile, a group of air inlet packaging pieces is paved on one side, and the air inlet packaging piece is shared with the air charging pipe and the liquid level sensor of the adjacent air cavities, so that the cost can be effectively saved.

Inventors

  • SHI YANG
  • DU SHOUZHI
  • YANG FENGSHUN

Assignees

  • 时阳

Dates

Publication Date
20260512
Application Date
20250401

Claims (6)

  1. 1. The ship air drag reduction device is characterized by comprising the following components: The ship flat bottom (100) is characterized in that the bottom of the flat bottom (100) is divided into a plurality of independent air cavities (200) through a plurality of crisscross separation sectional materials (110), two independent air cavities (200) which are adjacent transversely are communicated with each other through throttling holes (111) formed in the separation sectional materials (110), an air inlet packaging piece (20) is arranged in each air cavity (200) on one side which is adjacent longitudinally, the air inlet packaging piece (20) comprises an air charging pipe (210) and a liquid level sensor (220), and the air charging pipe (210) and the liquid level sensor (220) are arranged in a hole in the bottom of the flat bottom (100) through watertight flange sealing pieces (230); The air supply storage device further comprises a plurality of air supply storage units (400) which are sequentially connected with the air cavity (200) through the air charging pipe (210) in cooperation with the pipeline (300), an air supply distribution unit (410) is arranged at the joint of the air supply storage units (400) and the pipeline (300), and the air supply distribution unit (410) and the liquid level sensor (220) are electrically connected with a control unit (500).
  2. 2. The ship air drag reducer according to claim 1, wherein the longitudinal sections of the partition section bar (110) are arranged in parallel with keels in the ship length direction, the number is not less than 3, the thickness is proper, the transverse sections of the partition section bar (110) are arranged in vertical keels in the ship width direction, the distance is less than or equal to H/d, the unit is meter, H is the section bar thickness, d is the draft change rate, and the longitudinal sections are connected with the transverse sections through 180-degree butt joint interfaces or 90-degree bend joint interfaces.
  3. 3. The ship air drag reduction device according to claim 1, wherein the air source storage unit (400) comprises an air compressor (420), an air bottle (430), a dryer (440) and a pressure reducing valve (450) which are sequentially connected, the pressure reducing valve (450) is communicated with one end of the pipeline (300), two air compressors (420) are arranged, one air compressor is used as a backup, the working pressure of the air compressor (420) is 30Bar, a pressure sensor (431) is arranged in the air bottle (430), the pressure sensor (431) is connected with the pressure reducing valve (450) through a connecting pipe and outputs an air source of 7Bar, and the air source storage unit (400) is arranged in an air compressor room of a ship.
  4. 4. A marine vessel air drag reducing device according to claim 3, wherein the air source distribution unit (410) comprises an air inlet valve (411), an electromagnetic valve (412) and a relay (413) which are arranged corresponding to each air cavity (200), the electromagnetic valve (412) controls the opening and closing of the air inlet valve (411), the relay (413) receives signals of a liquid level sensor (220) and is connected with the time relay (413) in parallel, the valve opening time is controlled to be less than or equal to 30 minutes, and the air inlet valve (411) is communicated with the pipeline (300).
  5. 5. A marine air drag reducer as in claim 1, wherein said spacer profile (110) is made of stainless steel, aluminum alloy composite profile or plastic material.
  6. 6. The ship air drag reducer according to claim 1, wherein the control unit (500) comprises a control panel (510), the control panel (510) is provided with an automatic, manual and beside three-gear mode switch (511), and the surface of the control panel (510) is also provided with an air cavity liquid level indicator lamp (512) and an air compressor start-stop button (513).

Description

Ship air drag reduction device Technical Field The utility model belongs to the technical field of ship drag reduction, and particularly relates to a ship air drag reduction device. Background Under the general trend of energy conservation and emission reduction of ships, the air lubrication technology is taken as a development direction with great potential, at present, the main air lubrication technology comprises three types of air bubbles, an air layer and an air cavity, although the air bubble technology has realized mass production, such as a product of silver flow technology in the United kingdom, the drag reduction efficiency is only 5% -10%, the air consumption is high, the air compressor needs to continuously supply air, capillaries of an Air Release Unit (ARU) of core spare parts are easy to block and damage, and the cost of a single ship is high. The gas layer technology has higher drag reduction efficiency than the bubble technology in theory, however, the stable gas film is realized under harsh conditions, the production, design and manufacturing requirements are high, the gas consumption is high, and the mass production cannot be realized until now, while the traditional gas cavity technology has high drag reduction efficiency and small air escape amount, but is only suitable for gas cavity ships with special structures, the construction cost of the large gas cavity structure is high, the applicable ship range is limited, and the development is greatly limited. Therefore, the development of the ship air drag reduction device with high drag reduction efficiency, small air escape amount, low construction and modification cost and low maintenance cost has higher practicability and better market application prospect. Disclosure of utility model The utility model aims to provide a ship air drag reduction device, and aims to solve the problems in the background art. The ship air drag reduction device comprises a ship flat bottom, wherein the bottom of the flat bottom is divided into a plurality of independent air cavities through a plurality of crisscross separation sectional materials, two independent air cavities which are adjacent transversely are communicated with each other through throttling holes formed in the separation sectional materials, an air inlet packaging piece is arranged in each air cavity on one side which is adjacent longitudinally, the air inlet packaging piece comprises an air charging pipe and a liquid level sensor, and the air charging pipe and the liquid level sensor are arranged in holes in the bottom of the flat bottom through watertight flange sealing pieces; The air supply storage device is characterized by further comprising a plurality of air supply storage units which are sequentially connected with the air cavity through air inflation pipes in a matched mode, wherein an air supply distribution unit is arranged at the joint of the air supply storage units and the air cavity, and the air supply distribution unit and the liquid level sensor are electrically connected with a control unit. As a preferable technical scheme of the utility model, the longitudinal sections of the separation section bars are arranged along the parallel keels in the ship length direction, the number of the longitudinal sections is not less than 3, the thickness of the longitudinal sections is proper, the transverse sections of the separation section bars are arranged along the vertical keels in the ship width direction, the distance is less than or equal to H/d, wherein H is the section bar thickness, d is the draft change rate, and the longitudinal section bars are connected with the transverse section bars through 180-degree butt joint interfaces or 90-degree bend joint interfaces. As a preferable technical scheme of the utility model, the air source storage unit comprises an air compressor, an air bottle, a dryer and a pressure reducing valve which are sequentially connected, wherein the pressure reducing valve is communicated with one end of a pipeline, two air compressors are provided, one air compressor is used as a backup, the working pressure of the air compressor is 30Bar, a pressure sensor is arranged in the air bottle, the pressure sensor is connected with the pressure reducing valve through a connecting pipe and outputs an air source of 7Bar, and the air source storage unit is arranged in an air compressor room of a ship. As a preferable technical scheme of the utility model, the air source distribution unit comprises an air inlet valve, an electromagnetic valve and a relay, wherein the air inlet valve, the electromagnetic valve and the relay are arranged corresponding to each air cavity, the electromagnetic valve controls the air inlet valve to be opened and closed, the relay receives signals of the liquid level sensor and is connected with the time relay in parallel, the valve opening time is controlled to be less than or equal to 30 minutes, and the air inlet valve is communicat