CN107128470B - A Magnus sail applied to the outside of a ship's funnel - Google Patents

Abstract

The invention discloses a magnus sail which is used outside a ship chimney, wherein an inner-layer air cylinder and an outer-layer air cylinder are connected through a spiral blade, the inner-layer air cylinder is arranged on the outer side wall of the chimney through a rolling bearing, wind enters from a gap at the lower edges of the inner-layer air cylinder and the outer-layer air cylinder, and the wind pushes the spiral blade to drive the air cylinder to rotate; the bottom edge of the side wall of the inner-layer air duct is provided with a toothed edge along the circumference in a ring shape, two conical gears are symmetrically arranged on two sides of the chimney, and the conical gears are meshed with the toothed edge of the inner-layer air duct; the bevel gear is driven by the motor, and the bevel gear rotates to drive the inner layer wind barrel to rotate. The magnus wind tunnel and the ship chimney structure are combined, so that the space on the ship is greatly saved, the installation cost is saved, and the stress stability of the wind tunnel is improved; the spiral blades effectively utilize wind energy to drive the wind barrel to rotate, so that the efficiency is improved, the motor drives the bevel gear to drive the wind barrel to rotate, and the controllability and adjustability of the Magnus sail are improved.

Description

A Magnus sail applied to the outside of a ship's funnel

technical field

The invention belongs to the research field of using wind energy to boost sails in ships, and in particular relates to a Magnus sail applied outside a ship's chimney.

Background technique

Due to the current high cost of fuel oil, more control of emission areas, and increasingly stringent environmental regulations, wind energy, as a "primitive" power for ships, has gradually returned to people's vision. In recent years, many companies and research institutions have carried out in-depth research on ship wind power technology and realized the modern utilization of wind energy. The blower propulsion device designed by the Magnus effect can effectively save energy, reduce the unit thrust investment cost, and has a simple structure and is easy to operate and control. Based on these advantages, active research on the application of the Magnus effect will help promote the development of the shipbuilding industry.

Although the Magnus effect has been discovered for more than one hundred years, the application of the Magnus effect in ship propulsion has only been studied in the past ten years, and there are still certain defects and drawbacks in its specific practical application. , The utilization rate of wind energy in the common air duct device is greatly affected by the environment, and there are certain hidden dangers in the stability of large-scale devices when the wind speed is high.

Contents of the invention

Aiming at the technical problems in the prior art that the utilization rate of wind energy is low and the environment is greatly affected, the purpose of the present invention is to provide a Magnus sail that is applied outside the chimney of a ship.

The technical scheme that the present invention takes is:

A Magnus sail applied outside the chimney of a ship, including a chimney of a ship, a fan duct, a spiral blade, a bevel gear, and a motor, and the fan duct is composed of an inner fan duct and an outer fan duct arranged coaxially The inner and outer two-layer structure, the inner fan tube and the outer fan tube are connected by spiral blades, the inner fan tube is installed on the outer wall of the chimney through rolling bearings, and the wind flows from the lower edge of the inner fan tube and the outer fan tube. Entering through the gap, the wind pushes the helical blades and drives the air cylinder to rotate; the bottom edge of the side wall of the inner air cylinder is ring-shaped and there are toothed edges along the circumference, and two bevel gears are symmetrically arranged on both sides of the chimney, and the bevel gear and the inner layer The tooth edges of the blower are meshed with each other; the bevel gear is driven by a motor, and the rotation of the bevel gear drives the inner blower to rotate.

Further, the magnitude of the Magnus driving force generated by the air duct is

Among them, R is the radius of the outer layer of the air duct; ω is the rotational angular velocity of the air duct; v is the wind speed perpendicular to the duct; ρ is the fluid density; A is a constant.

Further, the rolling bearings are deep groove ball bearings, and at least one pair of rolling bearings are arranged along the outer wall of the ship's chimney.

Further, both the inner layer air cylinder and the outer layer air cylinder are configured as a hollow cylindrical structure, and the diameter of the outer layer air cylinder is larger than the diameter of the inner layer air cylinder.

Further, the structures of the tooth rim and the bevel gear are arranged in cooperation with each other, and the gap between adjacent teeth on the tooth rim is consistent with the gap between adjacent teeth on the bevel gear.

Further, the windward surface of the spiral blade is provided with a deflector.

Further, the deflector is arranged along the flow direction of the wind as an arc-shaped blade with a "V"-shaped constriction in cross-section, and the widest width of the arc-shaped blade is narrower than the width of the spiral blade.

Utilizing the deflecting effect of the helical blades, the wind is transmitted from bottom to top along the gap between the inner and outer air ducts. The special structure of the deflector is beneficial to the wind in the inner and outer air ducts It plays the role of secondary gathering, increases the contact area of the wind force, and is conducive to enhancing the driving force of the wind force on the inner and outer layer air ducts. The special structure of the "V"-shaped tapered mouth is conducive to increasing the wind The driving force at the end of the spiral blade makes full use of the wind energy.

The beneficial effects of the present invention are:

Combining the Magnus air duct with the chimney structure of the ship greatly saves space on the ship, saves installation costs, and improves the stability of the air duct under force;

The helical blades are set between the inner fan cylinder and the outer fan cylinder to effectively use the wind energy to drive the fan cylinder to rotate, so that the ship can maximize the use of wind energy to provide propulsion when driving downwind, improve efficiency, greatly reduce energy consumption, and save energy , saving operating costs.

The lower edge of the blower is designed as a toothed edge structure, and the bevel gear is driven by a movable motor to drive the blower to rotate, which improves the controllability and adjustability of the Magnus sail, so that the ship is not only affected by When there is a transverse wind, the Magnus effect can be used to convert wind energy into kinetic energy to provide propulsion for the ship. Moreover, the wind energy can be effectively used when the ship is traveling with the wind and against the wind to save energy.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the Magnus force of the hair dryer of the present invention;

Among them, 1. Ship chimney; 2. Rolling bearing; 3. Inner layer fan duct; 4. Outer layer fan duct; 5. Spiral blade; 6. Bevel gear; 7. Motor.

Detailed ways

Further illustrate the present invention below in conjunction with accompanying drawing.

Example 1

As shown in Fig. 1 and Fig. 2, a kind of Magnus sail applied outside ship's chimney, comprises ship's chimney 1, blower, helical blade 5, bevel gear 6, electric motor 7, and blower is arranged as by coaxial Arranged inner layer fan tube 3 and outer layer fan tube 4 are composed of inner and outer two-layer structure, the inner layer fan tube 3 and the outer layer fan tube 4 are connected by spiral blades 5, and the inner layer fan tube 3 is installed on the On the outer wall of the chimney, the wind enters from the gap between the inner air cylinder and the lower edge of the outer air cylinder 4, and the wind pushes the spiral blade 5 to drive the air cylinder to rotate; There are toothed edges, and two bevel gears 6 are symmetrically arranged on both sides of the chimney, and the bevel gears 6 mesh with the tooth edges of the inner fan cylinder 3; the bevel gears 6 are driven by the motor 7, and the bevel gears 6 rotate to drive the inner The layer air duct 3 rotates.

Further, the magnitude of the Magnus driving force generated by the air duct is

Where R is the radius of the outer layer 4 of the air duct; ω is the rotational angular velocity of the air duct; v is the wind speed perpendicular to the duct; ρ is the fluid density; A is a constant.

Further, the rolling bearings 2 are deep groove ball bearings, and at least one pair of rolling bearings 2 are arranged along the outer wall of the ship chimney 1 . The two pairs of rolling bearings 2 have strong support, and they play the role of connecting the ship chimney 1 and the inner layer air duct 3, greatly reducing the rotational resistance between the ship chimney 1 and the inner layer air duct 3.

Further, the inner air cylinder 3 and the outer air cylinder 4 are both configured as a hollow cylindrical structure, and the diameter of the outer air cylinder 4 is larger than that of the inner air cylinder 3 . The double cylinder structure of the inner layer air cylinder 3 and the outer layer air cylinder 4 makes a gap between the two, so that the wind can play a certain role in promoting the air cylinder along the gap.

Further, the structures of the tooth rim and the bevel gear 6 are arranged in cooperation with each other, and the gap between adjacent teeth on the tooth rim is consistent with the gap between adjacent teeth on the bevel gear 6 . The tightness of cooperation is strong, and the air cylinder is rotated through the bevel gear 6 .

According to the measured lateral wind speed v and density ρ, and the required driving force F, the required angular velocity of the air duct can be obtained from the deformation formula

The working principle of the present invention is as follows: when the ship is in the process of traveling, when the ship is subjected to lateral wind, the GPS sensor senses the wind direction and wind speed. The steering direction is opposite to the direction of the required force, and the bevel gear 6 will mesh with the lower tooth edge of the inner layer 3 of the air duct, and the gear transmission will be driven by the motor 7, so that the wind energy can be effectively used, and the fuel cost can be greatly saved.

Example 2

On the basis of Embodiment 1, different from Embodiment 1, the windward surface of the spiral blade 5 is provided with deflectors.

The deflector is arranged as an arc-shaped blade with a "V"-shaped constriction in cross section along the flow direction of the wind, and the widest width of the arc-shaped blade is narrower than the width of the spiral blade 5 .

Utilizing the deflecting effect of the helical blade 5, the wind is transmitted from bottom to top along the gap between the inner layer air cylinder 3 and the outer layer air cylinder 4. The special structure of the deflector is beneficial to the inner and outer layer air cylinder. The wind in 4 plays the role of secondary gathering, which increases the contact area of the wind force, which is beneficial to enhance the driving force of the wind force on the inner layer air cylinder 3 and the outer layer air cylinder 4, and the special "V" shaped tapered mouth The structure is conducive to increasing the driving force of the wind at the end of the spiral blade 5, and fully utilizes the wind energy.

The above is not a limitation of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the essential scope of the present invention, some changes, modifications, additions or substitutions can also be made, these Improvements and retouches should also be considered within the protection scope of the present invention.

Claims (4)

1. A Magnus sail applied outside the chimney of a ship is characterized in that it comprises a chimney of a ship, a blower, a spiral blade, a bevel gear, and a motor, and the blower is arranged as an inner layer blower coaxially arranged The inner and outer two-layer structure composed of the outer fan duct and the inner fan duct are connected by spiral blades. The inner fan duct is installed on the outer wall of the chimney through rolling bearings. The air duct enters into the gap at the lower edge, and the wind pushes the spiral blade to drive the air duct to rotate; the bottom edge of the side wall of the inner air duct is ring-shaped and is provided with toothed edges along the circumference, and two bevel gears are symmetrically arranged on both sides of the chimney. The bevel gear meshes with the teeth of the inner fan cylinder; the bevel gear is driven by a motor, and the rotation of the bevel gear drives the inner fan cylinder to rotate; The structures of the tooth rim and the bevel gear are arranged in cooperation with each other, and the gap between adjacent teeth on the tooth rim is consistent with the gap between adjacent teeth on the bevel gear; The windward surface of the spiral blade is provided with a deflector, and the deflector is arranged along the flow direction of the wind as an arc-shaped blade with a "V"-shaped tapered mouth in section, and the widest width ratio of the arc-shaped blade is The width of the spiral blade is narrow. 2. according to claim 1, a kind of Magnus sail applied outside the chimney of the ship is characterized in that the Magnus driving force generated by the blower is

Among them, R is the radius of the outer layer of the air duct; ω is the rotational angular velocity of the air duct; v is the wind speed perpendicular to the duct; ρ is the fluid density; A is a constant. 3 . The Magnus sail applied outside the chimney of a ship according to claim 1 , wherein the rolling bearing is a deep groove ball bearing, and at least one pair of rolling bearings are arranged along the outer wall of the chimney of the ship. 4 . 4. A kind of Magnus sail applied outside the chimney of a ship according to claim 1, characterized in that, the inner layer wind tube and the outer layer wind tube are all set to a hollow cylindrical structure, and the outer layer wind tube The diameter is greater than the diameter of the inner layer air duct.

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