Laterally-released wing-shaped sail

Abstract

Main decks on two broadsides of a ship body are lower than a convex deck in the middle of the ship body, the main decks and the convex deck are in transition connection through an inclined deck, a deck frame is arranged on the main decks, a sail face supporting component is arranged at the position corresponding to the deck frame, the sail face supporting component is fixed to the inclined deck, a sail base is fixed to the deck frame, and the sail base is fixed to the convex deck. And after the sail surface is put down, the end part of the sail surface falls on the sail surface supporting member. The sail face supporting component is composed of a sail face supporting stand column and an end point supporting block, the sail face supporting stand column is provided with two side panels, a web is fixed between the two side panels, the center line of the web is perpendicular to the inclined deck, the upper surface of the end point supporting block is in an arc shape, and the length of the end point supporting block is two times of the radius of the free end of the sail face. The height is equal to the distance from the free end of the sail surface to the inclined deck. By means of the structure and characteristics of the LNG ship, the sail device is placed in the area between the main deck and the inclined deck, the sail installation height is reduced, and the influence of the sail standing state on the blind area is reduced.

Description

Technical Field

[0001] This invention belongs to the field of LNG ship design and construction with sails, and specifically relates to a side-launchable wing-shaped sail. Background Technology

[0002] After nearly five years of continuous technological breakthroughs and hull design development for the 175,000 cubic meter MARK III Flex LNG carrier, significant progress has been made in the development and design of large LNG carriers. With numerous shipyards and design institutes dedicated to the research, design, optimization, and upgrading of large LNG carriers, the overall performance of these vessels continues to improve, leading to increasingly fierce competition. Furthermore, the constant updates to new standards and technologies are forcing the industry to actively innovate technical solutions for large LNG carriers, enhance their overall capabilities and market competitiveness, and proactively plan for securing more market orders.

[0003] LNG has limited emission reduction capabilities, necessitating research into the application of low-carbon and zero-carbon technologies in large LNG carriers to further reduce their carbon dioxide emissions. While there are no successful examples of sail technology applied to large LNG carriers, this patent, considering the specific characteristics of such vessels, proposes a sail arrangement scheme to further reduce carbon dioxide emissions and ultimately achieve the long-term goal of zero carbon emissions.

[0004] Existing LNG carriers are equipped with airfoil sail systems, which are placed on the main deck. Due to limitations such as blind spots on the main deck, they need to be placed on the side of the LNG carrier. The airfoil sail is a one-piece sail; the sail surface is not retractable, but it can be rotated and lowered. The furthest point of the lowered sail cannot exceed the side of the LNG carrier. This is why a deck rack is used to place the sail; if placed in other locations on the side, the lowered sail would extend beyond the hull, failing to meet port requirements. The problem with the current solution is that the sail is placed too high above the deck, requiring it to be lowered when passing under bridges, affecting the ship's stability. Furthermore, the upright sail significantly impacts blind spots, affecting the safety of navigation. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a side-launchable airfoil sail, aiming to reduce sail height while ensuring that the furthest point of the sail, when lowered, does not exceed the side of the LNG carrier. The technical solution adopted is as follows:

[0006] A side - placed airfoil sail. The main deck on both sides of the hull is lower than the convex deck in the middle of the hull. The main deck and the convex deck are connected by an inclined deck in a transitional manner. The inclined deck is inclined. There is a deck rack on the main deck. The height of the deck rack is lower than that of the convex deck. The bottom part of the deck rack is fixed on the main deck and part is fixed on the inclined deck. The vertical height between the main deck and the convex deck is B, and the height of the deck rack is A, where 0.3B < A < B.

[0007] There is a sail surface support member corresponding to the position of the deck rack. The sail surface support member is fixed on the inclined deck. After the sail surface is laid down, the end of the sail surface falls on the sail surface support member.

[0008] The sail base is fixed on the deck rack. The sail surface support member consists of a sail surface support column and an end support block. The sail surface support column has two side panels. A web is fixed between the two side panels. The center line of the web is perpendicular to the inclined deck. The width of the web is 400 - 800 mm, and the width of the side panel is 200 - 400 mm. The upper surface of the end support block is arc - shaped. The length of the end support block is twice the radius of the free end of the sail surface, and the height is equal to the distance from the free end of the sail surface to the inclined deck.

[0009] When the sail surface stops being used, first restore the sail surface to the front, then rotate the sail surface by an angle R, where 0 < R < 45°. At this time, the outermost end of the sail surface just does not exceed the side of the hull. Then rotate it inward by 1° to ensure that the sail surface does not exceed the side of the hull. Then lay down the sail surface. The sail surface falls on the sail surface support column, and the free end of the sail surface falls on the end support block. The rotatable and foldable sail base can refer to Patent CN118618591A.

[0010] Here, R is the angle formed by the laid - down sail surface and the baseline.

[0011] For the above - mentioned side - placed airfoil sail, further, there is a support panel at the top of the sail surface support column. At the junction of the support panel and the sail surface, the bottom is connected to the inclined deck by an arc transition.

[0012] For the above - mentioned side - placed airfoil sail, further, when the sail surface is erected, the minimum distance C between the bottom of the sail surface and the junction of the inclined deck and the convex deck, C > 2000 mm.

[0013] For the above - mentioned side - placed airfoil sail, further, the deck rack is a square box. The top plate of the deck rack is square, and the side length of the top plate is D, where D is greater than the maximum value of the side length of the sail base.

[0014] For the above - mentioned side - placed airfoil sail, further, there is rubber pasted on the upper surface of the support panel.

[0015] For the above - mentioned side - placed airfoil sail, further, the top of the sail surface support column is fixed at 1 / 5L from the free end of the sail surface, where L is the width of the sail surface.

[0016] For the above-mentioned side-lying airfoil sail, further, when the distance between the sail surface support column and the free end of the sail surface is greater than 3 meters, another sail surface support column is provided between the free end of the sail surface and the sail surface support column.

[0017] For the above-mentioned side-lying airfoil sail, further, the upper surface of the end support block is pasted with rubber.

[0018] For the above-mentioned side-lying airfoil sail, further, holes for people to pass through are opened on the side plates of the deck rack.

[0019] For the above-mentioned side-lying airfoil sail, further, reinforcing ribs are provided on the inner surfaces of the top plate and the side plates of the deck rack.

[0020] This patent adopts the method of tilting and laying down the sail, and utilizes the structure and characteristics of the LNG ship itself to place the sail device in the area between the main deck and the inclined deck, reducing the installation height of the sail, minimizing the impact of the standing state of the sail on the blind area, reducing the size of the deck pedestal, reducing the light ship weight, simplifying the construction process, and at the same time, improving the safety of ship navigation. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram when the sail surface is erected, and a schematic structural diagram of the top view of the sail surface after the sail surface is laid down;

[0022] Figure 2 It is a schematic structural diagram of the deck rack;

[0023] Among them, 1 - deck rack, 2 - sail base, 3 - sail surface, 5 - end support block, 6 - sail surface support column, 7 - main deck, 8 - inclined deck, 9 - convex deck, 11 - top plate, 13 - side plate, 14 - hole for people to pass through. Detailed Embodiment

[0024] The present invention will be further described in conjunction with the drawings.

[0025] A side-lying airfoil sail, as Figure 1 shown, the main decks on both sides of the hull are lower than the convex deck in the middle of the hull, and the main deck and the convex deck are transitionally connected through an inclined deck. The inclined deck is inclined. A deck rack is provided on the main deck. The height of the deck rack is lower than the convex deck. Part of the bottom of the deck rack is fixed on the main deck, and part is fixed on the inclined deck. The vertical height between the main deck and the convex deck is B, the height of the deck rack is A, 0.3B < A < B, and the closest distance C between the sail surface 3 of the sail and the hull structure, C > 2000 mm. The sail surface is a non-retractable airfoil sail surface. The deck rack is arranged between the main deck 7 and the convex deck 9. At this time, the maximum boundary when the sail stands exceeds the side boundary of the LNG ship.

[0026] At a position corresponding to the deck rack, a sail surface support member is provided, and the sail surface support member is fixed on the inclined deck. After the sail surface is laid down, the end of the sail surface falls on the sail surface support member.

[0027] The sail base is fixed on the deck rack. The sail surface support member consists of a sail surface support column and an end point support block. The sail surface support column has two side panels, and a web is fixed between the two side panels. The center line of the web is perpendicular to the inclined deck, and its web width is 400 - 800 mm, and the side panel width is 200 - 400 mm. The upper surface of the end point support block is arc-shaped, and the length of the end point support block is twice the radius of the free end of the sail surface, and the height is equal to the distance from the free end of the sail surface to the inclined deck. A support panel is provided at the top of the sail surface support column. At the connection between the support panel and the sail surface, the bottom and the inclined deck are connected by an arc transition.

[0028] When the sail surface stops being used, first restore the sail surface to the front, and then rotate the sail surface by an angle R, 0 < R < 45°. The outermost end of the laid-down sail surface does not exceed the side boundary of the LNG ship. At this time, the outermost end of the sail surface just does not exceed the hull side, and then rotate it inward by 1° to ensure that the sail surface does not exceed the hull side. Then lay down the sail surface, and the sail surface falls on the sail surface support column, and the free end of the sail surface falls on the end point support block. The rotatable and foldable sail base can refer to Patent CN118618591A.

[0029] Where, R is the included angle formed by the laid-down sail surface and the baseline.

[0030] As Figure 2 shown, the deck rack is a square box, the top plate of the deck rack is square, and the side length of the top plate is D, and D is greater than the maximum value of the side length of the sail base. A hole 13 for people to pass through is provided on the side plate structure of the deck rack, which can facilitate personnel passage. Reinforcing ribs are arranged at equal intervals above the side plate 14, and the direction of the reinforcing ribs is inward. The large gusset plate 15 is a T-shaped gusset plate.

[0031] The sail surface 3 of the sail can rotate 360° during use. When it stops being used, first restore it to the front, that is, the concave surface faces the bow of the ship, and then rotate the sail surface by an angle R, 0 < R < 45°. At this time, the outermost end of the sail surface just does not exceed the ship's side, and then rotate it inward by 1°. At this time, it can be ensured that the sail surface does not exceed the hull side. Then lay down the sail surface, and the sail surface falls on the sail surface end point support structure 5

[0032] and the sail surface surface support structure 6. The purpose of doing this is to reduce the area of the deck occupied by the sail surface, and it is also possible to place the sail device at the key points of the deck and the side deck.

[0033] End support block 5, which is set on the inclined deck 8, has a length of twice the radius of the end of the airfoil sail. The height of the web plate is determined according to the distance from the end of the sail to the inclined deck 8 after the sail is laid down. The width of the panel is 200~400mm. The panel is arc-shaped and covered with a rubber pad to protect the sail.

[0034] The top of the sail support column is fixed at a distance of 1 / 5L from the free end of the sail, where L is the width of the sail. If the distance between the sail support column and the free end of the sail is greater than 3 meters, an additional sail support column is installed between the free end of the sail and the original sail support column.

Claims

1. A side-mountable airfoil sail, characterized in that, The main decks on both sides of the hull are lower than the convex decks amidships. The main decks and convex decks are connected by sloping decks, which are angled. A deck rack is installed on the main deck, its height lower than the convex deck. The bottom part of the deck rack is fixed to the main deck, and the rest is fixed to the sloping deck. The vertical distance between the main deck and the convex deck is B, and the height of the deck rack is A, 0.3B. <A<B; A sail support component is installed at the location corresponding to the deck frame. The sail support component is fixed on the inclined deck. After the sail is laid down, the end of the sail rests on the sail support component. The sail base is fixed to the deck frame. The sail support structure consists of sail support columns and end support blocks. The sail support columns have two side panels, and a web is fixed between the two side panels. The center line of the web is perpendicular to the inclined deck. The width of the web is 400~800mm, and the width of the side panels is 200~400mm. The upper surface of the end support block is arc-shaped. The length of the end support block is twice the radius of the free end of the sail, and the height is equal to the distance from the free end of the sail to the inclined deck.

2. The side-launchable airfoil sail according to claim 1, characterized in that, The top of the sail support column is equipped with a support panel, and the bottom of the support panel is connected to the sail with a curved transition.

3. A side-mountable airfoil sail according to claim 1, characterized in that, When the sail is raised, the closest distance C between the bottom of the sail and the junction of the inclined deck and the convex deck is C>2000mm.

4. A side-mountable airfoil sail according to claim 1, characterized in that, The deck frame is a square box, and the top plate of the deck frame is a square with a side length D, which is greater than the maximum side length of the sail base.

5. A side-launchable airfoil sail according to claim 1, characterized in that, The upper surface of the support panel is covered with rubber.

6. A side-mountable airfoil sail according to claim 1, characterized in that, The top of the sail support column is fixed at a distance of 1 / 5L from the free end of the sail, where L is the width of the sail.

7. A side-launchable airfoil sail according to claim 6, characterized in that, If the distance between the sail support column and the free end of the sail is greater than 3 meters, then another sail support column should be installed between the free end of the sail and the sail support column.

8. A side-launchable airfoil sail according to claim 1, characterized in that, Rubber is attached to the upper surface of the end support block.

9. A side-mountable airfoil sail according to claim 4, characterized in that, The side panels of the deck frame have openings for people to pass through.

10. A side-mountable airfoil sail according to claim 1, characterized in that, The inner surfaces of the top and side plates of the deck frame are reinforced with ribs.

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