Auxiliary propulsion device for ship

Abstract

The invention discloses a ship auxiliary propulsion device which comprises an isolation body, the isolation body is fixed to the position, in front of a wind resistance generating object, of a ship in use, and the wind resistance generating object comprises a ship body located above a waterline, a superstructure located above a deck and cargoes on the deck. When the ship advances, the isolation body is used for isolating at least part of airflow blowing to the object generating wind resistance, the isolation body is provided with a windward side directly facing the airflow, the windward side is in an uphill gradient mode in the direction from front to back, and a wing-shaped body arranged in an overhead mode is fixed to the position corresponding to the upper portion of the windward side. The device is easy to install, free of movable operation parts, capable of reducing wind resistance of the ship and generating horizontal component force for pushing the ship to advance, especially suitable for the container ship, and the whole device can better reduce oil consumption, reduce emission, achieve energy conservation and emission reduction and assist in achieving green shipping.

Description

Technical Field

[0001] The present invention relates to the field of ship wind-assisted boosting devices, and particularly to a ship auxiliary propulsion device. Background Art

[0002] In recent years, various ship wind-assisted boosting devices have gradually become a research hotspot. Prototype machines and products have been put into trial use and actual use both at home and abroad. They can generate lift through wind and use the lift to generate a resultant force in the direction of the bow to boost the ship. Currently, existing sail-like products usually require a control system to control the angle and rotation speed, and energy consumption is required to make them rotate. Moreover, it is difficult to adapt the installation position on ships with limited deck space such as container ships.

[0003] Therefore, how to provide a ship auxiliary propulsion device that can avoid the above drawbacks has become an urgent technical problem for those skilled in the art. Summary of the Invention

[0004] To achieve the above object, the present invention provides a ship auxiliary propulsion device. The specific technical solution is as follows:

[0005] A ship auxiliary propulsion device includes an isolation body. When in use, the isolation body is fixed in front of the wind resistance object on the ship. The wind resistance object includes the hull above the waterline, the superstructure above the deck, and the cargo on the deck. When the ship is moving, the isolation body is used to isolate at least part of the oncoming airflow blowing towards the wind resistance object. The isolation body has a windward surface directly facing the oncoming airflow, and the windward surface presents a slope style that slopes upward in the front-to-back direction. Above the corresponding windward surface, an airfoil body is fixed in an overhead arrangement. After the oncoming airflow passes through the windward surface presenting a slope style that slopes upward, the flow direction deflects upward, and then interacts with the airfoil body to generate a force pointing from the rear lower part to the front upper part. The horizontal component of this force is forward. The front and rear directions are defined with the bow as the front and the stern as the rear.

[0006] Preferably, the wind resistance object includes the container on the deck and the superstructure. The isolation body is fixed at the bow. The windward surface includes an inclined surface in the middle and streamlined surfaces on the left and right sides of the inclined surface and respectively connecting the inclined surface. The bottom side of the inclined surface is close to the front end of the bow, and the top side of the inclined surface is far from the front end of the bow. The left and right directions are based on the left and right sides of the ship, with the left side as the left and the right side as the right. Above the corresponding inclined surface, the airfoil body fixed in an overhead arrangement is provided.

[0007] Preferably, the airfoil includes a plate body having a leading edge presented as a circle and a trailing edge presented as being sharp relative to the leading edge. The plate body has a pressure surface and a suction surface that are oppositely arranged and are both curved surfaces. The pressure surface faces the inclined surface, and the suction surface faces away from the inclined surface. The plate body is arranged in the left-right direction, and when there is one plate body arranged in the left-right direction, its length is not less than the dimension of the corresponding inclined surface in the left-right direction. When there are multiple plate bodies arranged in the left-right direction, the sum of their lengths is not less than the dimension of the corresponding inclined surface in the left-right direction. The leading edge of the plate body is in the front, and the trailing edge is in the back.

[0008] Preferably, both the left and right ends of the plate body are fixedly connected to a support plate, and the support plate is fixedly connected to the windward surface to be able to fix the plate body overhead.

[0009] Preferably, the support plate is a sheet-like plate body. The support surface of the sheet-like plate body is perpendicular to the airfoil, and the area of the support surface is not less than the area of the cross-section of the airfoil. The sheet-like plate body is fixed to the windward surface in a direction perpendicular to the windward surface. The leading edge of the airfoil is in the front, and the trailing edge is in the back.

[0010] Preferably, the number of the plate bodies is multiple, and the multiple plate bodies are arranged at intervals in the uphill direction of the inclined surface, and the distance between adjacent plate bodies is 1.5 to 10 times the length of the plate body in the front-back direction.

[0011] Preferably, the multiple plate bodies are arranged in multiple rows in the uphill direction of the inclined surface. The direction of the multiple rows is arranged in the front-back direction, and it also includes a structure arranged in one column or multiple columns. The direction of the multiple columns is arranged in the left-right direction. When arranged in multiple columns, the sum of the lengths of the airfoil in the left-right direction is not less than the dimension of the corresponding inclined surface in the left-right direction.

[0012] Preferably, the two streamlined surfaces are symmetrically arranged with respect to the middle inclined surface.

[0013] Preferably, the shape of the bottom end of the separator matches the contour shape of the bow of the ship.

[0014] Preferably, a perforation is provided at a position near the bottom end of the separator for the cable to pass through.

[0015] The provided one has the following technical effects:

[0016] The booster device proposed by the present invention is simple to install, has no moving parts, can reduce the wind resistance of the ship, and generate a horizontal force to push the ship forward. It is particularly suitable for container ships. The entire booster device can better reduce fuel consumption, reduce emissions, achieve energy conservation and emission reduction, and help achieve green shipping. Specifically, when sailing, the hull above the waterline and the superstructure, cargo and other parts above the hull deck will generate air resistance, especially for container ships. A large number of containers above the deck will generate greater wind resistance. After installing this device, relying on the association and cooperation of the isolation body and the airfoil body, specifically, the airflow passes through the windward surface with an uphill slope style, so that the direction of the airflow changes. At this time, the airflow on the windward surface flows from the bow to the stern, and the direction is upward, and then the airfoil body generates a force perpendicular to the incoming flow. The force points from the bottom of the stern to the top of the bow, so that a horizontal component force is generated, and the horizontal component force is from the stern to the bow. The structure of the isolation body and the airfoil body is simple, and they work together to generate a force to propel the ship forward in a lower cost manner, greatly saving energy consumption.

[0017] Preferably, the windward surface includes an inclined surface located in the middle and streamlined surfaces located on the left and right sides of the inclined surface and respectively connected to the inclined surface, and the overhead airfoil body is fixed above the inclined surface; when the inclined surface is a plane, the airfoil body can be arranged more conveniently corresponding to the inclined surface.

[0018] Preferably, each airfoil body includes a plate body, and the cross-section of the plate body in the left and right directions remains unchanged, which is easy to manufacture. At the same time, the airfoil body can adapt to the airflow passing through the inclined surface, and the installation method of the airfoil body is determined according to the airflow, for example, how to determine the installation angle of the airfoil body (the installation angle refers to the angle between the cross-sectional chord of the plate body and the inclined surface, and the determination method can be specifically determined through CFD calculation or wind tunnel test).

[0019] Preferably, the support plate is a sheet-like plate, and the area of ​​its support surface is limited to be no less than the area of ​​the cross-section of the airfoil body, so that the sheet-like plate has the effect of fixing the airfoil body and avoiding the occurrence of wingtip vortices to enhance the airfoil lift of the airfoil body. The sheet-like plate is fixed in a direction perpendicular to the windward surface and has a small thickness due to its sheet-like shape, so as to minimize the wind resistance it generates.

[0020] Preferably, by limiting the distance between adjacent plates, it is possible to avoid the situation where the front plate affects the horizontal force generation of the rear plate due to too close a distance. The fluid velocity is the lowest at about 30% of the far distance at one plate length behind the plate, about 70% of the far distance at 1.4 times the plate length behind the plate, and about 90% of the far distance at 3 times the plate length behind the plate. Therefore, when the front-to-back interval between the plates exceeds 1.5 times, the influence of the front plate on the rear plate can be reduced. When the front-to-back interval between the plates exceeds 10 times, the number of arranged plates is limited. Therefore, the distance between adjacent plates is 1.5 to 10 times the front-to-back length of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a schematic structural diagram of a specific embodiment of a ship auxiliary propulsion device provided by the present invention;

[0022] Figure 2 For Figure 1 the propulsion device is a schematic structural diagram applicable to a specific situation;

[0023] Figure 3 For Figure 1 the side view is a schematic structural diagram, in which the directions of the wind and the lift are shown.

[0024] Figures 1-3 The reference numerals in the figures are as follows:

[0025] 1 Separator, 2 Windward surface, 3 Container, 4 Ship, 5 Inclined surface, 6 Streamlined surface, 7 Plate, 8 Pressure surface, 9 Suction surface, 10 Sheet plate, 11 Support surface, 12 Notch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further details a ship auxiliary propulsion device proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings are in a very simplified form and all use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the embodiments of the present invention. In order to make the objectives, features and advantages of the present invention more obvious and understandable, please refer to the accompanying drawings. It should be noted that the structures, scales, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the objectives that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention.

[0027] Combined with the appendixFigures 1-3 , the present invention provides a ship auxiliary propulsion device, including an isolation body 1 which is fixed in front of the wind resistance object on the ship 4 during use. The wind resistance object includes the hull above the waterline, the superstructure above the deck, and the cargo on the deck. When the ship 4 is moving forward, the isolation body 1 is used to isolate at least part of the incoming air flow blowing towards the wind resistance object. The isolation body 1 has a windward surface 2 directly facing the incoming air flow, and the windward surface 2 presents an uphill slope pattern along the direction from front to back. Above the corresponding windward surface 2, an airfoil is fixedly arranged in an overhead manner. After the incoming air flow passes through the windward surface 2 with an uphill slope pattern, the flow direction deflects upward and then interacts with the airfoil to generate a force pointing from the lower rear to the upper front. The horizontal component of this force is forward, and the front and rear directions are based on the bow and stern of the ship 4. The bow is the front, and the stern is the rear.

[0028] The boosting device proposed by the present invention is simple to install and has no moving parts, which can reduce the wind resistance of the ship 4. At the same time, it generates a horizontal force to push the ship 4 forward, especially suitable for container ships carrying a large number of containers 3. The entire boosting device can better reduce fuel consumption and emissions, achieve energy conservation and emission reduction, and contribute to the realization of green shipping. Specifically, during navigation, the hull above the waterline, the superstructure above the hull deck, the cargo, etc. will all generate air resistance. Especially for container ships, a large number of containers 3 above the deck will generate a large amount of wind resistance. After installing this device, relying on the associated cooperation of the isolation body 1 and the airfoil, specifically, the air flow passes through the windward surface with an uphill slope pattern, which changes the air flow direction. At this time, the air flow on the windward surface flows from the bow to the stern, with the direction deflecting upward, and then generates a force perpendicular to the incoming flow with the airfoil. This force points from below the stern to above the bow, generating a horizontal component force, and the horizontal component force is in the direction from the stern to the bow. The structures of the isolation body 1 and the airfoil are simple, and they cooperate together to generate the force to propel the ship forward in a lower-cost way, greatly saving energy consumption.

[0029] In a specific embodiment, as Figures 1-3 shown, the wind resistance object includes a container 3 on the deck. The isolation body 1 is fixed at the bow. The windward surface 2 includes an inclined surface 5 in the middle and streamlined surfaces 6 located on the left and right sides of the inclined surface 5 and respectively connecting the inclined surface 5. The bottom side of the inclined surface 5 is close to the front end of the bow, and the top side of the inclined surface 5 is far from the front end of the bow. The left and right directions are based on the port and starboard directions of the ship 4. The port side is the left, and the starboard side is the right. Above the corresponding inclined surface 5, the airfoil fixedly arranged in an overhead manner is provided. Figure 1 The angle shown is only for showing one streamlined surface 6.

[0030] The windward surface 2 includes an inclined surface 5 in the middle and streamlined surfaces 6 located on the left and right sides of the inclined surface 5 and respectively connecting the inclined surface 5. The airfoil body arranged overhead is fixed above the corresponding inclined surface 5; when the inclined surface 5 is a flat surface, it is more convenient to arrange the airfoil body corresponding to the inclined surface 5.

[0031] In a specific embodiment, as Figures 1-3 shown, the airfoil body includes a plate body 7 with a cross-section similar to that of an aircraft wing airfoil. The pressure surface 8 of the plate body 7 faces the inclined surface 5, and the suction surface 9 faces away from the inclined surface 5. The plate body 7 is arranged in the left-right direction and its length in the left-right direction is not less than the size of the corresponding inclined surface 5 in the left-right direction.

[0032] The plate body 7 with a cross-section similar to that of an aircraft wing airfoil is selected as the airfoil body. At the same time, the plate body 7 can adapt to the incoming airflow passing through the inclined surface 5. The determination method of the installation angle of the airfoil body (this installation angle refers to the angle between the chord line of the plate body 7 of the aircraft wing airfoil and the inclined surface 5) can be specifically determined by CFD calculation or wind tunnel test.

[0033] In a specific embodiment, both the left and right ends of the plate body 7 are fixedly connected to a support plate, and the support plate is fixedly connected to the windward surface 2 to be able to fixedly support the plate body 7 overhead.

[0034] Among them, as Figure 1 shown, the support plate is a sheet-like plate body 10. The sheet-like plate body 10 has a support surface 11. The end of the plate body 7 is fixed to the support surface 11 in a direction perpendicular to the support surface 11. The sheet-like body 10 is perpendicular to the plate body 7. The area of the support surface 11 is not less than the area of the cross-section of the plate body 7. The sheet-like plate body 10 is fixed to the windward surface 2 in a direction perpendicular to the windward surface 2.

[0035] The support plate is selected as the sheet-like plate body 10, and it is defined that the area of its support surface 11 is not less than the area of the cross-section of the plate body 7, so that the sheet-like plate body 10 not only fixes the airfoil body but also avoids the occurrence of wing tip vortices to enhance the thrust generation effect of the airfoil body. And the sheet-like plate body 10 is fixed in a direction perpendicular to the windward surface 2 and has a relatively small thickness due to its sheet-like shape, which can minimize the wind resistance generated by it.

[0036] In a preferred specific embodiment, the sheet-like plate body 10 is only arranged at both ends of the plate body 7, Figure 1 as shown, arranging an additional sheet-like plate body 10 in the middle of the plate body 7 is considered for the stability of support. However, considering the better thrust generation aspect, it is better to only arrange it at both ends. The sheet-like plate body 10 arranged in the middle will reduce the area where the plate body 7 can generate thrust.

[0037] In a specific embodiment, the number of the plate bodies 7 is multiple, and the multiple plate bodies 7 are arranged at intervals along the uphill direction of the inclined surface 5, and the distance between adjacent plate bodies 7 is 1.5 times to 10 times the length of the plate body 7 in the front-back direction. The plate bodies 7 can be arranged in one row or multiple rows, and in this specific embodiment, they are arranged in one row.

[0038] Limiting the distance between adjacent plate bodies 7 can avoid the situation that the front plate body 7 affects the force generation effect of the rear plate body 7 due to too close a distance.

[0039] In this specific embodiment, as Figure 1 shown, the two streamlined surfaces 6 are symmetrically arranged with respect to the middle inclined surface 5.

[0040] The shape of the bottom end of the separator 1 matches the contour shape of the bow of the ship. As Figure 2 shown, the bottom end of the separator 1 is installed at the edge of the bow. This installation position and the setting of the separator 1 can avoid occupying too much space on the ship 4.

[0041] Perforations are formed at a position of the separator 1 close to its bottom end for the cable to pass through.

[0042] Furthermore, a groove-shaped notch 12 can be provided in the middle part of the top of the separator 1 to avoid blocking the line of sight.

[0043] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0044] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A marine auxiliary propulsion device, characterized in that, It includes a separator which is fixed in front of the wind resistance generating object on the ship during use. The wind resistance generating object includes the hull above the waterline, the superstructure above the deck, and the cargo on the deck. When the ship is moving, the separator is used to separate at least part of the oncoming airflow blowing towards the wind resistance generating object. The separator has a windward surface directly facing the oncoming airflow, and this windward surface presents a slope style of uphill in the direction from front to back. Above the corresponding windward surface, an airfoil body arranged overhead is fixed. After the oncoming airflow passes through the windward surface with the slope style of uphill, the flow direction deflects upward, and then interacts with the airfoil body to generate a force pointing from the lower rear to the upper front. The horizontal component of this force is forward, and the front and rear orientations are defined with the bow of the ship as the front and the stern of the ship as the rear.

2. The marine auxiliary propulsion device according to claim 1, characterized in that, The wind resistance generating object includes containers on the deck and the superstructure. The separator is fixed at the bow of the ship. The windward surface includes an inclined surface in the middle and streamlined surfaces on the left and right sides of the inclined surface and respectively connecting the inclined surface. The bottom side of the inclined surface is close to the front end of the bow, and the top side of the inclined surface is far from the front end of the bow. The left and right orientations are based on the port and starboard of the ship, with the port side as the left and the starboard side as the right. Above the corresponding inclined surface, the airfoil body arranged overhead is fixed.

3. The marine auxiliary propulsion device according to claim 2, characterized in that, The airfoil body includes a plate body. The plate body has a leading edge presented as a circle and a trailing edge presented as relatively sharp compared to the leading edge. The plate body has a pressure surface and a suction surface which are oppositely arranged and are both curved surfaces. The pressure surface faces the inclined surface, and the suction surface faces away from the inclined surface. The plate body is arranged in the left-right direction, and when there is one plate body arranged in the left-right direction, its length is not less than the size of the corresponding inclined surface in the left-right direction. When there are multiple plate bodies arranged in the left-right direction, the sum of their lengths is not less than the size of the corresponding inclined surface in the left-right direction. The leading edge of the plate body is in the front and the trailing edge is in the rear.

4. The auxiliary propulsion device for a ship according to claim 3, characterized in that, Both the left and right ends of the plate body are fixedly connected to a support plate, and the support plate is fixedly connected to the windward surface to be able to fix the plate body overhead.

5. The auxiliary propulsion device for a ship according to claim 4, characterized in that, The support plate is a sheet-like plate body. The support surface of the sheet-like plate body is perpendicular to the airfoil body. The area of the support surface is not less than the area of the cross-section of the airfoil body. The sheet-like plate body is fixed to the windward surface in the direction perpendicular to the windward surface.

6. The auxiliary propulsion device for a ship according to claim 5, characterized in that, The number of the plate bodies is multiple, and the multiple plate bodies are arranged at intervals in the uphill direction of the inclined surface, and the distance between adjacent plate bodies is 1.5 to 10 times the length of the plate body in the front-rear direction.

7. The marine auxiliary propulsion device according to claim 6, characterized in that, The multiple plate bodies are arranged in multiple rows in the uphill direction of the inclined surface. The direction of the multiple rows is arranged in the front-rear direction, and it also includes a structure arranged in one column or multiple columns. The direction of the multiple columns is arranged in the left-right direction. When arranged in multiple columns, the sum of the lengths of the airfoil body in the left-right direction is not less than the size of the corresponding inclined surface in the left-right direction.

8. The marine auxiliary propulsion device according to claim 2, characterized in that, The two streamlined surfaces are symmetrically arranged with respect to the inclined surface in the middle.

9. The marine auxiliary propulsion device according to claim 8, wherein The shape of the bottom end of the separator matches the contour shape of the bow of the ship.

10. The marine auxiliary propulsion device according to claim 9, wherein Perforations are opened at the position of the separator close to its bottom end for the cable to pass through.

Images