Ship wind-shield wall

Abstract

The utility model provides a ship wind-shield wall which comprises a bulwark extension part and a curved surface main body part, the bulwark extension part is connected to a bulwark at the edge of a ship forecastle deck, the bulwark extension part vertically extends upwards along the bulwark, and a window structure is arranged on the bulwark extension part; the lower end of the curved surface main body part is connected with the upper end of the bulwark extension part, and the curved surface main body part is a smooth curved surface inclining towards the tail part of the wind-shield wall and retracting towards the middle longitudinal section line. According to the utility model, the wind resistance during ship navigation can be reduced, the ship power requirement for maintaining the same navigational speed is reduced, and fuel is saved, so that the effects of reducing carbon emission and improving the ship energy efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, and particularly relates to a ship windshield wall. Background Art

[0002] When medium and large container ships are sailing, since the containers on the deck are stacked to a relatively high height, when viewed from the front, a plane facing the wind directly is formed during sailing. This plane will bring relatively large wind resistance, resulting in a large sailing resistance, thereby having an adverse impact on ship carbon emissions and ship energy efficiency. Summary of the Invention

[0003] The purpose of the utility model is to effectively reduce the resistance during ship sailing, reduce ship carbon emissions, and improve ship energy efficiency by adding a windshield wall at the bow of the container.

[0004] The purpose of the utility model is achieved through the following technical solutions: The ship windshield wall includes a bulwark extension part and a curved surface main body part. The bulwark extension part is connected to the bulwark on the edge of the ship's forecastle deck, and the bulwark extension part extends vertically upward along the bulwark. A window structure is provided on the bulwark extension part; the lower end of the curved surface main body part is connected to the upper end of the bulwark extension part, and the curved surface main body part is a smooth curved surface that slopes towards the tail of the windshield wall and converges towards the centerline plane.

[0005] Preferably, the height of the bulwark extension part is 1 - 1.5 m.

[0006] Preferably, the window structure is any one or a combination of several of a mooring equipment observation window, an observation port for the master control equipment, and a Suez Canal lamp window.

[0007] Preferably, the tangential angle at the middle position of the bottom of the curved surface main body part is 40 - 75 degrees.

[0008] Preferably, the part of the curved surface main body part close to the upper edge is a curved surface with a radius of curvature greater than 3 m.

[0009] Preferably, the two tail edges of the curved surface main body part are straight lines or curved surfaces that converge in the middle and have a radius of curvature greater than 3 m.

[0010] Preferably, when the ratio of the forecastle deck length to the maximum width of the ship exceeds 60%, the length of the ship windshield wall is 60% - 80% of the forecastle deck length.

[0011] Preferably, vertical and horizontal reinforcing girders are provided inside the curved main body. Both the vertical and horizontal reinforcing girders are arranged closely against the inner side of the curved main body. The vertical reinforcing girder is installed perpendicular to the outer edge contour of the bow and extends along the height direction of the curved main body, while the horizontal reinforcing girder extends along the horizontal direction. The strength specification of the horizontal reinforcing girder with a lower height is stronger than or equal to that of the horizontal reinforcing girder with a higher height.

[0012] Preferably, the upper end height of the curved main body is restricted below the sight line limit, and the sight line limit slopes downward towards the bow direction; when the height of the sight line limit is lower than 50% of the height of the first row of containers, the upper ends on both sides of the curved main body of the windshield extend upward along the original curve to form an extension part, and the upper end height of the extension part does not exceed the height of the first row of containers.

[0013] Preferably, between the two sides of the curved main body of the windshield, a transverse support is provided.

[0014] The beneficial effects of the present utility model are as follows: The present utility model can reduce the wind resistance during ship navigation, reduce the ship power demand to maintain the same speed, save fuel, thereby achieving the effects of reducing carbon emissions and improving ship energy efficiency. Description of the Drawings

[0015] Figure 1 It is the front view of Embodiment 1 of the present utility model.

[0016] Figure 2 It is the side view of Embodiment 1 of the present utility model.

[0017] Figure 3 It is the top view of Embodiment 1 of the present utility model.

[0018] Figure 4 It is the longitudinal sectional view of Embodiment 1 of the present utility model.

[0019] Figure 5 It is the installation schematic diagram of the cross brace of Embodiment 1 of the present utility model.

[0020] Figure 6 It is the side view of Embodiment 2 of the present utility model.

[0021] In the figure: 1. forecastle deck, 2. bulwark, 3. bulwark extension, 4. window structure, 5. curved main body, 6. upper edge curve of the curved main body, 7. tail curve of the curved main body, 8. vertical reinforcing girder, 9. horizontal reinforcing girder, 10. sight line limit, 11. cross brace, 12. extension part. Detailed Embodiments

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model belong to the protection scope of the present utility model.

[0023] Embodiment 1:

[0024] As Figures 1 to 5 shown, a ship windshield includes a bulwark extension part 3 and a curved surface main body part 5. The bulwark extension part 2 is connected and installed on the bulwark 2 at the edge of the ship's forecastle deck 1. The bulwark extension part 3 extends vertically upward along the bulwark, and a window structure 4 is provided on the bulwark extension part; the lower end of the curved surface main body part 5 is connected to the upper end of the bulwark extension part 3. The curved surface main body part 5 is a curved surface that inclines towards the tail of the windshield and converges towards the midship line. The curved surface is a fairing surface with a smooth surface and no obvious angular turning.

[0025] In the present utility model, the windshield is connected and installed on the bulwark 2 at the edge of the ship's forecastle deck 1, located at the very front of the entire ship. The windward curved surface is a fairing surface with a smooth surface and no obvious angular turning. The curved surface main body part is a curved surface that inclines towards the tail of the windshield and converges towards the midship line, so that the curved surface main body part 5 has a lower wind resistance coefficient. When a container ship is sailing, through the guiding effect of the windshield when the ship faces the wind, it can cross the windward wall formed by the containers, and make the flow field smoother, reducing eddy currents and turbulent flows, thereby reducing the wind resistance coefficient of the ship.

[0026] The shape of the bulwark extension part 3 is adapted to the bulwark 2 at the edge of the forecastle deck 1. The bulwark extension part 2 is connected and installed at the upper end of the bulwark 2 by welding. The height of the bulwark extension part 3 is 1 - 1.5 m.

[0027] The window structure 4 is any one or a combination of a mooring line guiding device observation window, a master control device observation port, and a Suez Canal lamp window. By providing the window structure 4 on the bulwark extension part 3, the influence of the windshield on observing the situation around the ship is compensated.

[0028] Among them, the mooring line guiding device observation window and the master control device observation port are mainly distributed on both sides of the bulwark extension part 3. When the ship is moored, the situation can be observed and the equipment can be operated through the mooring line guiding device observation window and the master control device observation port. As one of the most important international waterways, when a ship passes through the specific waterway of the Suez Canal, special Suez Canal lamps need to be equipped on the ship, and the Suez Canal lamps are installed behind the Suez Canal lamp window.

[0029] In the present utility model, the tangential angle at the middle position of the bottom of the curved surface main body part 5 is 40 - 75 degrees.

[0030] In the present utility model, the upper edge surface 6 of the curved surface main body portion 5 close to the upper edge is a slightly concave curved surface with a small curvature (as shown in Figure 1 ). The tail curved surfaces 7 of the curved surface main body portion 5 on both sides are straight lines or slightly concave curved surfaces with a small curvature and inwardly converging in the middle (as shown in Figure 1 ).

[0031] In the present utility model, when the ratio of the length of the forecastle deck 1 to the maximum width of the ship exceeds 60%, the length of the ship's windshield is 60% - 80% of the length of the forecastle deck 1.

[0032] In the present utility model, a vertical stiffening girder 8 and a horizontal stiffening girder 9 are provided inside the curved surface main body portion 5. Both the vertical stiffening girder 8 and the horizontal stiffening girder 9 are arranged closely against the inner side of the curved surface main body portion 5. The vertical stiffening girder 8 is installed and arranged perpendicular to the outer contour of the ship's bow and extends along the height direction of the curved surface main body portion 5. The horizontal stiffening girder 9 extends along the horizontal direction and selects different strength specifications according to the stress magnitude at different heights.

[0033] Further, the upper end height of the curved surface main body portion is limited below the line of sight limit line 10 (as shown in Figure 2 ). The line of sight limit line 10 slopes downward from the stern to the bow direction. In this embodiment, when the height of the line of sight limit line is higher than 50% of the height of the first row of containers at the bow of the ship.

[0034] In the present utility model, for the curved surface main body portion 5 of the windshield, according to the need of structural strength, a transverse support 11 for horizontally connecting the curved surface outer shells on both sides is added to enhance the anti-buckling ability of the entire windshield structure.

[0035] Embodiment 2:

[0036] As shown in Figure 6 , the difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, the height of the line of sight limit line 10 is lower than 50% of the height of the first row of containers at the bow of the ship. In this case, the upper ends on both sides of the curved surface main body portion 5 extend upward along the original curved surface and form extension portions, and the upper end height of the extension portions does not exceed the height of the first row of containers to improve the drag reduction effect.

[0037] For the remaining structures of Embodiment 2, refer to Embodiment 1.

[0038] The present utility model is not limited to the above best implementation manner. Any person can obtain other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in its shape or structure, as long as it has a technical solution identical or similar to the present application, it falls within the protection scope of the present utility model.

Claims

1. Ship windshield, characterized in that, It includes a bulwark extension and a curved main body. The bulwark extension is connected to the bulwark on the edge of the forecastle deck of the ship. The bulwark extension extends vertically upward along the bulwark, and a window structure is provided on the bulwark extension. The lower end of the curved main body is connected to the upper end of the bulwark extension, and the curved main body is a smooth curved surface that slopes towards the tail of the windshield and converges towards the centerline plane.

2. The ship windshield according to claim 1, characterized in that, The height of the bulwark extension is 1 - 1.5 m.

3. The ship windshield wall according to claim 1, wherein, The window structure is any one or a combination of several of the fairlead equipment observation window, the observation port of the master control equipment, and the Suez Canal lamp window.

4. The ship windshield according to claim 1, characterized in that, The tangential angle at the middle position of the bottom of the curved main body is 40 - 75 degrees.

5. The ship windshield according to claim 1, characterized in that The part of the curved main body close to the upper edge is a curved surface with a radius of curvature greater than 3 m.

6. The ship windshield according to claim 1, characterized in that, The two tail edges on both sides of the curved main body are straight lines or curved surfaces that converge in the middle and have a radius of curvature greater than 3 m.

7. The ship windshield according to claim 1, characterized in that, When the ratio of the length of the forecastle deck to the maximum width of the ship exceeds 60%, the length of the ship's windshield is 60% - 80% of the length of the forecastle deck.

8. The ship windshield according to claim 1, characterized in that, Vertical stiffeners and horizontal stiffeners are provided inside the curved main body. Both the vertical stiffeners and the horizontal stiffeners are arranged closely along the inner side of the curved main body. The vertical stiffeners are installed perpendicular to the outer contour of the bow and extend along the height direction of the curved main body, and the horizontal stiffeners extend along the horizontal direction.

9. The ship windshield according to claim 1, characterized in that, The upper end height of the curved main body is restricted below the sight line limit. The sight line limit slopes downward towards the bow of the ship; when the height of the sight line limit is lower than 50% of the height of the first row of containers at the bow of the ship, the upper ends on both sides of the windshield curved main body extend upward along the original curved surface and form extensions, and the upper end height of the extensions does not exceed the height of the first row of containers.

10. The ship windshield according to claim 9, characterized in that, A transverse support is provided between the two sides of the windshield curved main body.

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