Rotary sail rotor formed by bonding two semicircular panels and processing method of rotary sail rotor

Abstract

The invention discloses a rotary sail rotor formed by bonding two semicircular panels and a machining method. Wherein the rotary sail rotor is formed by bonding two semicircular panels. The machining method of the rotating sail rotor formed by bonding the two semicircular panels comprises the following steps that reinforcements are laid in the two semicircular molds, and the semicircular panels are formed in a vacuum infusion mode; the two semicircular molds are in butt joint, and the two semicircular panels in the two semicircular molds are in butt joint; and the joint of the two semicircular panels is bonded by using the bonding glue and the bonding strip to form a cylindrical rotor. Compared with a rotary sail rotor forming process in the prior art, the rotary sail rotor forming process has the advantages that the product weight is reduced, the original strength is kept, the production efficiency is improved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The present invention relates to nautical equipment, and particularly to a Magnus effect rotor. Background Art

[0002] A rotating sail is a rotating cylinder that utilizes the Magnus effect to harness wind power to propel a ship. It can be installed on new ships or on ships that are already in operation.

[0003] The basic description of the Magnus effect is as follows: when the axis direction of a rotating object does not coincide with the flight direction, the rotation of the object can drive the surrounding fluid, causing the fluid velocity on one side of the object to increase and on the other side to decrease. According to Bernoulli's law, an increase in fluid velocity will result in a decrease in pressure, and a decrease in fluid velocity will result in an increase in pressure. This leads to a pressure difference in the transverse direction of the rotating object and forms a transverse force. At the same time, since the transverse force is perpendicular to the direction of the object's motion, this force mainly changes the direction of the flight speed, that is, it forms the centripetal force in the object's motion, thus causing a change in the flight direction of the object. A rotating object flying in a fluid generates fluid vortices around it and is subjected to a force perpendicular to the direction of motion. For a rotating sailboat, the rotating object is a huge metal cylinder, and the "fluid" is the wind. The resulting force is used to generate propulsion for the ship.

[0004] The first commercial application of a rotating sail on a modern ship was in 2010 when German company Enercon installed a flettner rotor solution on the "E-Ship1". The ship is 130 m long, 22.5 m wide, and has a gross tonnage of 10,550 t. Four rotating cylinders (flettner rotors) with a height of 27 m and a diameter of 4 m are installed on the ship's deck, and it is equipped with two diesel engines with a power of 3.5 MW. The rotating sail and the diesel engine adopt a "sail-engine cooperation" method, with a maximum speed of up to 17.5 knots and an energy-saving efficiency of up to 30%.

[0005] Rotating sails are large in size. In the prior art, rotating sails can be as high as 35 m and have a diameter of 6 m. If they are processed using metal, not only is the processing difficult and the transportation difficult, but also, during use, driving the rotating sail requires consuming more fuel. If they are processed using composite materials, on the premise of ensuring sufficient strength, their weight can be effectively reduced, facilitating transportation and reducing energy consumption.

[0006] The existing manufacturing processes for composite rotating sails are mainly divided into two types: one is the winding process, and the rotors manufactured by this process are relatively heavy; the other is vacuum infusion, in which three circular arc-shaped panels, namely the first circular arc-shaped panel 01, the second circular arc-shaped panel 02, and the third circular arc-shaped panel 03, are made by vacuum infusion, as Figure 1As shown in the figure, and then bonded to form a cylindrical rotor. This process is relatively cumbersome to manufacture, has low production efficiency, and high production costs. Summary of the Invention

[0007] The technical problems solved by the present invention: When using the winding process to make the rotating sail, the product quality is relatively heavy and the production cycle is relatively long; when using the three-part arc panel bonding process to make the rotating sail, the production time of the three joints is relatively long and the production cost is relatively high.

[0008] To solve the above technical problems, the present invention provides a rotating sail rotor formed by bonding two semi-circular panels and a processing method thereof. Among them, the rotating sail rotor is formed by bonding two semi-circular panels. The processing method of the rotating sail rotor formed by bonding two semi-circular panels includes the following steps: First, lay the reinforcement in two semi-circular molds, and use the vacuum infusion method to form the semi-circular panels; Second, dock the two semi-circular molds so that the two semi-circular panels in the two semi-circular molds are docked; Third, use the adhesive and the adhesive strip to bond the joints of the two semi-circular panels to form a cylindrical rotor.

[0009] The reinforcement includes fiberglass cloth and core material, and the fiberglass cloth and the core material are laid according to the shape of the semi-circular panel. As an option, the fiberglass cloth layer can be laid in the semi-circular mold first, and then the core material can be laid.

[0010] Alternatively, the reinforcement includes carbon fiber cloth and core material, and the carbon fiber cloth and the core material are laid according to the shape of the semi-circular panel.

[0011] As an improvement, the two semi-circular molds are hinged on the same base. Around the base, the two semi-circular molds can be opened left and right, or closed towards each other. When the two semi-circular molds are opened left and right, lay the reinforcement in the two semi-circular molds, and use the vacuum infusion method to form the semi-circular panels. After the two semi-circular panels are formed, close the two semi-circular molds towards each other so that the two semi-circular panels are docked.

[0012] Using the vacuum infusion method to make the two semi-circular panels, and the joints are bonded through trapezoidal adhesive strips. Compared with using the three-part arc panel bonding process to make the rotating sail, there is one less joint, and the processing difficulty and comprehensive cost of the product can be well improved. Compared with the existing forming process of the rotating sail rotor, the present invention reduces the product weight and maintains the original strength, improves the production efficiency, and reduces the manufacturing cost. Description of the Drawings

[0013] The following further describes the present invention with reference to the drawings: Figure 1Schematic diagram of manufacturing a rotating sail using a three - part arc - shaped panel bonding process; Figure 2 Schematic diagram of the processing method of a rotating sail rotor with two semi - circular panels bonded together according to the present invention.

[0014] Explanation of symbols in the figure: 01, First arc - shaped panel; 02, Second arc - shaped panel; 03, Third arc - shaped panel; 1, First semi - circular mold; 2, First semi - circular panel; 3, Second semi - circular mold; 4, Second semi - circular panel; 5, First bonding strip; 6, Second bonding strip; 7, Base. Specific implementation method

[0015] A rotating sail rotor with two semi - circular panels bonded together is formed by bonding two semi - circular panels. At the joint of the two semi - circular panels, an adhesive and bonding strips are used.

[0016] As Figure 2 , the processing method of a rotating sail rotor with two semi - circular panels bonded together includes the following steps: First, lay reinforcements in two semi - circular molds and form semi - circular panels by means of vacuum infusion. Among them, the two semi - circular molds are the first semi - circular mold 1 and the second semi - circular mold 3 respectively. The first semi - circular panel 2 is formed in the first semi - circular mold, and the second semi - circular panel 4 is formed in the second semi - circular mold; Second, dock the two semi - circular molds so that the two semi - circular panels in the two semi - circular molds are docked; Third, bond the joints of the two semi - circular panels with an adhesive and bonding strips to form a cylindrical rotor. Among them, the first bonding strip 5 is used at the bottom joint of the two semi - circular panels, and the second bonding strip 6 is used at the top joint of the two semi - circular panels.

[0017] The reinforcement includes fiberglass cloth and core material, and the fiberglass cloth and core material are laid according to the shape of the semi - circular panel. Or, the reinforcement includes carbon fiber cloth and core material, and the carbon fiber cloth and core material are laid according to the shape of the semi - circular panel. First, lay a layer of fiberglass cloth or carbon fiber cloth in the semi - circular mold, and then lay the core material. Then lay a vacuum bag and evacuate the air in the system to form a negative pressure in the mold cavity. Use the pressure generated by the vacuum to press the unsaturated resin into the fiber laminate through the pre - laid pipeline, so that the resin infiltrates the reinforcement and finally fills the entire mold cavity. After the product is cured, remove the vacuum bag material to obtain the required product from the mold.

[0018] Two semi-circular molds are hinged on the same base 7. Around the base, the two semi-circular molds can be opened left and right, or closed towards each other. When the first semi-circular mold 1 and the second semi-circular mold 3 are opened left and right, a reinforcing material is laid inside the two semi-circular molds, and a semi-circular panel is formed by means of vacuum infusion. After the two semi-circular panels are formed, the first semi-circular mold 1 and the second semi-circular mold 3 are closed towards each other to butt the two semi-circular panels. Then, the bottom joint of the two semi-circular panels is bonded with a first bonding strip 5, and the top joint of the two semi-circular panels is bonded with a second bonding strip 6.

[0019] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A rotating sail rotor formed by bonding two semi-circular panels, characterized in that: The rotating sail rotor is formed by bonding two semi-circular panels together.

2. The rotatable sail rotor with two semi-circular panels bonded as claimed in claim 1, wherein: At the joint of the two semi-circular panels, adhesive and adhesive strips are used.

3. Processing method of a rotating sail rotor with two semi-circular panels bonded together, characterized in that, It includes the following steps: First, lay the reinforcement in two semi-circular molds and form the semi-circular panels by vacuum infusion. Second, dock the two semi-circular molds so that the two semi-circular panels in the two semi-circular molds are docked. Third, bond the joints of the two semi-circular panels with adhesive and adhesive strips to form a cylindrical rotor.

4. The processing method of the rotating sail rotor with two semi-circular panels bonded as claimed in claim 3, characterized in that: The reinforcement includes fiberglass cloth and core material, and the fiberglass cloth and core material are laid according to the shape of the semi-circular panel.

5. The processing method of the rotating sail rotor with two semi-circular panels bonded as claimed in claim 3, characterized in that: The reinforcement includes carbon fiber cloth and core material, and the carbon fiber cloth and core material are laid according to the shape of the semi-circular panel.

6. The processing method of the rotating sail rotor with two semi-circular panels bonded as claimed in claim 3, characterized in that: The two semi-circular molds are hinged on the same base, and around the base, the two semi-circular molds can be opened left and right, or closed towards each other.

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