Flexible line plan undersea body based on small water plane catamaran and working method thereof

Abstract

The present application relates to a kind of flexible linear body based on small water plane catamaran and its working method, belong to the technical field of high-performance ship.The present application is equipped with installation groove in the middle position of the body, and at least one flexible linear component is arranged in the installation groove of both sides in symmetrical state;Multiple gas mist injection ports are arranged at the front end of the flexible linear component, and multiple gas mist injection ports are evenly distributed on the hull plate in a ring shape, and the orientation of single gas mist injection port is directly opposite the flexible linear component.The present application can make the maximum width, square coefficient and midship section coefficient of the body increase, and the volume of the middle part increases, the displacement increases, the longitudinal position of the floating center moves to the bow, the longitudinal inclination of the ship rotates to the bow, thereby improving the performance of the ship.

Description

Technical Field

[0001] This invention relates to the field of high-performance ship technology, and in particular to a flexible hull based on a small waterplane area catamaran and its operating method. Background Technology

[0002] The main submerged parts of a small waterplane area catamaran are the submerged hull and part of the support hull. The support hull is generally narrow, which allows for better seakeeping.

[0003] In a small waterplane area catamaran (SWACAT), the submerged hull is completely submerged underwater. Its displacement volume and wetted surface area account for a large proportion of the entire vessel, and its cross-section is generally elliptical. The center of buoyancy is located longitudinally near the center of the hull. As the speed of SWACATs continues to increase, the relative position of the center of buoyancy of the hull to the center of gravity of the vessel will affect the total resistance, motion stability, and sailing attitude of the vessel.

[0004] Therefore, how to improve the shape of the submersible to enhance the hydrodynamic performance of the small waterplane area catamaran is a key issue that needs to be addressed. Summary of the Invention

[0005] In response to the shortcomings of the existing production technology, the applicant provides a flexible hull shape for a small waterplane area twin hull (SWATT) vessel and its operating method, which enables the hull shape of the SWATT vessel to be changed according to requirements, adjusts the longitudinal position of the vessel's center of buoyancy, and further improves the vessel's performance.

[0006] The technical solution adopted in this invention is as follows: a flexible linear submersible based on a small waterplane area catamaran, with mounting slots on both sides of the middle position of the submersible, and at least one flexible linear component arranged symmetrically in the mounting slots on both sides; multiple aerosol nozzles are provided at the front end of the flexible linear component, and the multiple aerosol nozzles are evenly distributed in a ring on the outer plate of the hull, with the orientation of each aerosol nozzle facing the flexible linear component.

[0007] As a further improvement to the above technical solution:

[0008] Preferably, the structure of the flexible linear component includes: a fixed pin inserted through the hull plate; elastic supports on both sides of the fixed pin, the elastic supports forming a triangular frame, the apex of the triangular frame being located at the fixed pin, and the two sides of the triangular frame being connected to the inner sidewall of the hull plate; a cover plate is also provided on the top of the fixed pin, the cover plate having an arc-shaped structure, the arc surface of the cover plate matching the streamlined outer surface of the submersible; and a flexible inflatable rubber is also provided between the cover plate and the hull plate, the flexible inflatable rubber being inserted through the fixed pin, the top arc surface of the flexible inflatable rubber matching the bottom surface of the cover plate.

[0009] Preferably, the fixing pin is a hollow tubular structure, and an air supply pipe is provided inside the fixing pin; the bottom surface of the flexible inflatable rubber is connected to the air inlet, and the bottom of the air inlet is connected to the air supply pipe.

[0010] Preferably, the contact end of the fixing pin with the outer plate of the hull is provided with a watertight perforation component.

[0011] Preferably, the air inlet of the gas supply pipe is connected to the gas cylinder.

[0012] Preferably, each aerosol nozzle is equipped with an aerosol injection cylinder through an air intake pipe.

[0013] Preferably, each aerosol nozzle is equipped with a one-way valve extending from inside the hull to outside the hull along the direction of aerosol injection.

[0014] A method for operating a flexible hull-shaped submersible based on a small waterplane area catamaran includes the following steps:

[0015] Step 1: Normal operation, without opening the flexible hull assembly of the small waterplane area catamaran, the submerged body is a cigar-shaped rotating body, at this time the overall hull shape of the submerged body forms the hull shape before deformation;

[0016] Step 2: Open the flexible linear assembly of the small waterplane area catamaran, allowing the flexible inflatable rubber to expand and simultaneously lift the cover plate, which expands outward to form the outer contour of the submersible; set an aerosol nozzle at the front end of the flexible linear assembly to continuously spray air, with the spray direction facing the flexible linear assembly. At this time, the overall linear shape of the submersible forms the deformed linear shape.

[0017] Preferably, in step two, the flexible linear components of the small waterplane area catamaran are opened by supplying air to the air supply pipe through an air cylinder, which in turn inflates the flexible inflatable rubber, causing the flexible inflatable rubber to expand and drive the cover plate to expand outward. After the cover plate expands outward, the maximum width, block coefficient, and mid-section coefficient of the submersible all increase, and the volume of the middle part of the submersible increases due to the outward expansion of the cover plate, which leads to an increase in displacement. The longitudinal position of the center of buoyancy moves towards the bow to the middle of the ship, and the longitudinal dip of the ship rotates towards the bow.

[0018] Preferably, the aerosol nozzle is operated by continuously supplying air into the nozzle from an aerosol nozzle cylinder, with the aerosol being ejected from the inside of the hull to the outside. A one-way valve is also provided inside the aerosol nozzle to restrict the direction of the aerosol ejection from the inside to the outside.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention features a reasonable structure and convenient operation. By opening or closing the flexible linear component, the cover plate can be expanded. The curvature of the cover plate matches the curvature of the outer side of the submersible. After the cover plate is expanded, the maximum width, square coefficient, and mid-section coefficient of the submersible all increase. Furthermore, the volume of the central part of the submersible increases due to the outward expansion of the cover plate, leading to an increase in displacement. The longitudinal position of the center of buoyancy moves towards the bow and then to the center of the ship, causing the ship's longitudinal dip to rotate towards the bow. This allows the ship to change the longitudinal position of its center of buoyancy according to usage requirements, match the relative position of the center of gravity and the center of buoyancy, adjust the ship's trim angle, and further improve the ship's performance.

[0021] The present invention also has the following advantages:

[0022] The aerosol nozzle of this invention is equipped with a one-way valve, which can only spray aerosol from inside the ship to the outside, thus limiting the spray direction of the aerosol. At the same time, since the space between the cover plate and the outer plate of the ship is filled with flexible inflatable rubber, the surface roughness of the rubber is greater than that of the painted steel plate of the hull. During the navigation process after the ship is deformed, the aerosol sprayed from the nozzle covers the flexible linear component, which can further reduce the total resistance during navigation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the submersible body of the present invention in a longitudinal section.

[0024] Figure 2 This is a schematic diagram of the structure of the flexible linear component of the present invention.

[0025] Figure 3 This is a schematic diagram showing the distribution of the aerosol nozzles of the present invention on the hull plating.

[0026] Figure 4 This is a cross-sectional view showing the fit between the aerosol nozzle of the present invention and the outer plate of the ship.

[0027] Figure 5 This is a schematic diagram showing the direction of the aerosol in the aerosol nozzle of the present invention.

[0028] Figure 6 This is a schematic diagram showing the interaction between the flexible linear component and the submersible body of the present invention.

[0029] Figure 7 This is a schematic diagram of the linear shape of the submersible body of the present invention in a cross-section.

[0030] Figure 8 This is a schematic diagram of the arrangement of flexible linear components on one side of the submersible in another embodiment of the present invention.

[0031] The components include: 1. Submersible body; 2. Mounting slot; 3. Flexible linear assembly; 4. Inflatable gas cylinder; 5. Aerosol jet cylinder; 6. Hull plating; 7. Aerosol jet nozzle; 8. One-way valve; 9. Pre-deformation linear shape; 10. Post-deformation linear shape.

[0032] 301. Fixing pin; 302. Elastic support component; 303. Gas supply pipe; 304. Watertight penetration component; 305. Inflator; 306. Flexible inflatable rubber; 307. Cover plate. Detailed Implementation

[0033] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0034] Example 1:

[0035] like Figures 1 to 7 As shown, the flexible hull of the small waterplane area catamaran in this embodiment has mounting slots 2 on both sides of the middle position of the hull 1. Flexible hull components 3 are arranged symmetrically in the mounting slots 2 on both sides. Multiple aerosol nozzles 7 are provided at the front end of the flexible hull components 3. The multiple aerosol nozzles 7 are evenly distributed in a ring on the outer plate 6 of the hull. The orientation of each aerosol nozzle 7 is directly facing the flexible hull component 3.

[0036] like Figure 2 As shown, in this embodiment, the structure of the flexible linear component 3 includes: a fixing pin 301 passing through the outer plate 6 of the hull; elastic support members 302 are provided on both sides of the fixing pin 301, and the elastic support members 302 on both sides form a triangular frame, with the apex of the triangular frame located at the fixing pin 301, and the two sides of the triangular frame connected to the inner sidewall of the outer plate 6 of the hull; a cover plate 307 is also provided on the top of the fixing pin 301, the cover plate 307 has an arc-shaped structure, and the arc surface of the cover plate 307 matches the streamlined outer surface of the submersible 1; a flexible inflatable rubber 306 is also provided between the cover plate 307 and the outer plate 6 of the hull, the flexible inflatable rubber 306 passing through the fixing pin 301, and the top arc surface of the flexible inflatable rubber 306 matching the bottom surface of the cover plate 307. The fixing pin 301 is a hollow tubular structure, and an air supply pipe 303 is installed inside the fixing pin 301; the bottom surface of the flexible inflatable rubber 306 is connected to the air inlet 305, and the bottom of the air inlet 305 is connected to the air supply pipe 303. A watertight penetration component 304 is installed at the contact end between the fixing pin 301 and the outer plate 6 of the hull.

[0037] like Figure 1 As shown, in this embodiment, the air inlet of the air supply pipe 303 is connected to the air filling cylinder 4; each individual aerosol spray nozzle 7 is matched with an aerosol spray cylinder 5 through the air inlet pipe.

[0038] like Figure 5 As shown, in this embodiment, the left side is the hull and the right side is the outside of the hull. Each aerosol nozzle 7 is equipped with a one-way valve 8 extending from the hull to the outside of the hull along the aerosol spray direction.

[0039] like Figure 7As shown, the working method of the flexible hull-type submersible based on a small waterplane area catamaran in this embodiment includes the following steps:

[0040] Step 1: Normal operation, without starting the flexible hull assembly 3 of the small waterplane area catamaran, the submersible 1 is a cigar-shaped rotating body, and at this time the overall hull shape of the submersible 1 constitutes the pre-deformation hull shape 9; for example, in the state of the pre-deformation hull shape 9, the initial hull shape of the submersible 1 is 25.22m long, the maximum width is 2m, the longitudinal position of the center of buoyancy at the design draft is 1.6% of the ship length in the middle and aft direction, the block coefficient is 0.157, and the mid-transverse section coefficient is 0.159;

[0041] Step 2: Open the flexible linear component 3 of the small waterplane area catamaran, causing the flexible inflatable rubber 306 to expand, simultaneously lifting the cover plate 307. The cover plate 307 expands outward, forming the outer contour of the submersible 1. A mist spray nozzle 7 is set at the front end of the flexible linear component 3 to continuously spray air, with the spray direction facing the flexible linear component 3. At this time, the overall linear shape of the submersible 1 forms the deformed linear shape 10.

[0042] In this embodiment, the flexible linear component 3 of the small waterplane area catamaran is opened in step two by supplying air to the air supply pipe 303 through the air cylinder 4. The air supply pipe 303 then inflates the flexible inflatable rubber 306, causing the flexible inflatable rubber 306 to expand. This causes the cover plate 307 to expand outward. After the cover plate 307 expands outward, the maximum width, square coefficient, and mid-section coefficient of the submersible 1 all increase. Furthermore, the volume of the middle part of the submersible 1 increases due to the outward expansion of the cover plate 307, which increases the displacement. The longitudinal position of the buoyancy center moves towards the bow to the middle of the ship, and the ship's longitudinal dip rotates towards the bow.

[0043] In this embodiment, the aerosol nozzle 7 is sprayed by continuously supplying air into the aerosol nozzle 7 from the aerosol spray cylinder 5, and the aerosol is sprayed from the inside of the hull hull plate 6 to the outside of the ship. A one-way valve 8 is also provided in the aerosol nozzle 7 to limit the spray direction of the aerosol from the inside to the outside. Since the cover plate 307 and the hull hull plate 6 are filled by a flexible inflatable rubber 306, and the surface roughness of the rubber is greater than that of the steel plate painted on the hull, the aerosol sprayed through the aerosol nozzle 7 covers the flexible linear component 3 during the ship's deformation and navigation process, which can further reduce the total resistance during navigation.

[0044] The present invention has a reasonable structure. By opening or closing the flexible linear component 3, the cover plate 307 can be expanded. The curvature of the cover plate 307 matches the outer curvature of the submersible 1. After the cover plate 307 is expanded, the maximum width, square coefficient, and mid-section coefficient of the submersible 1 all increase. The volume of the middle part of the submersible increases due to the outward expansion of the cover plate 307, which leads to an increase in displacement. The longitudinal position of the center of buoyancy moves towards the bow to the middle of the ship, and the ship's longitudinal tilt rotates towards the bow. After the flexible linear component 3 is opened, the present invention allows the ship to change the longitudinal position of the ship's center of buoyancy according to the usage requirements, match the relative position of the center of gravity and the center of buoyancy, adjust the ship's trim angle, and further improve the ship's performance.

[0045] Example 2:

[0046] like Figure 8 As shown, by way of example, multiple flexible linear components 3 can also be installed inside the mounting slot 2 on one side of the submersible 1. In this embodiment, four flexible linear components 3 are provided in the mounting slot 2 on one side. The four flexible linear components 3 form an arc shape as a whole, and their arc surface matches the streamlined outer surface of the submersible 1.

[0047] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A flexible hull-shaped submersible based on a small waterplane area catamaran, characterized in that: Mounting slots (2) are opened on both sides of the middle position of the submersible (1), and at least one flexible linear component (3) is arranged symmetrically in the mounting slots (2) on both sides. The structure of the flexible linear component (3) includes: a fixed pin (301) inserted on the outer plate (6) of the ship body, elastic support members (302) provided on both sides of the fixed pin (301), the elastic support members (302) on both sides forming a triangular frame, the apex of the triangular frame being located at the fixed pin (301), and the two sides of the triangular frame being connected to the inner wall of the outer plate (6). A cover plate (307) is also provided on the top of the fixed pin (301). The cover plate (307) has an arc-shaped structure and the arc surface of the cover plate (307) matches the streamlined outer surface of the submersible (1). A flexible inflatable rubber (306) is also provided between the cover plate (307) and the outer plate (6) of the ship. The flexible inflatable rubber (306) is inserted on the fixing pin (301), and the top arc surface of the flexible inflatable rubber (306) matches the bottom surface of the cover plate (307). The fixing pin (301) is a hollow tubular structure, and an air supply pipe (303) is provided inside the fixing pin (301); the bottom surface of the flexible inflatable rubber (306) is connected to the air inlet (305), and the bottom of the air inlet (305) is connected to the air supply pipe (303). When the flexible inflatable rubber (306) is inflated, it lifts the cover plate (307), causing the cover plate (307) to expand outward and form the outer contour of the submersible (1). The space between the cover plate (307) and the outer plate (6) of the hull is filled by the inflated flexible inflatable rubber (306). The surface roughness of the flexible inflatable rubber (306) is greater than the surface roughness of the painted steel plate of the hull. Multiple aerosol nozzles (7) are provided at the front end of the flexible linear component (3). The multiple aerosol nozzles (7) are evenly distributed in a ring on the outer plate (6) of the ship body, and the orientation of each aerosol nozzle (7) is facing the flexible linear component (3).

2. The flexible hull-shaped submersible based on a small waterplane area catamaran as described in claim 1, characterized in that: The contact end between the fixing pin (301) and the outer plate (6) of the ship is provided with a watertight penetration component (304).

3. The flexible hull-shaped submersible based on a small waterplane area catamaran as described in claim 1, characterized in that: The inlet end of the gas supply pipe (303) is connected to the gas cylinder (4).

4. The flexible hull-shaped submersible based on a small waterplane area catamaran as described in claim 1, characterized in that: Each aerosol nozzle (7) is equipped with an aerosol injection cylinder (5) through an air intake pipe.

5. The flexible hull-shaped submersible based on a small waterplane area catamaran as described in claim 4, characterized in that: Each aerosol nozzle (7) is equipped with a one-way valve (8) extending from inside the ship to outside the ship along the direction of aerosol injection.

6. A method for operating a flexible hull-shaped submersible based on a small waterplane area catamaran, characterized in that: Includes the following steps: Step 1: Normal operation, without opening the flexible hull form component (3) of the small waterplane area catamaran, the submerged body (1) is a cigar-shaped rotating body, and at this time the overall hull form of the submerged body (1) constitutes the pre-deformation hull form (9). Step 2: Open the flexible linear component (3) of the small waterplane area catamaran, so that the flexible inflatable rubber (306) expands and simultaneously lifts the cover plate (307). The cover plate (307) expands outward to form the outer contour of the submersible (1). Set the air mist spray nozzle (7) at the front end of the flexible linear component (3) to continuously spray air. The spray direction is directly facing the flexible linear component (3). At this time, the overall linear shape of the submersible (1) forms the deformed linear shape (10).

7. The working method of the flexible hull-shaped submersible based on a small waterplane area catamaran as described in claim 6, characterized in that: In step two, the flexible linear component (3) of the small waterplane area catamaran is opened by supplying air to the air supply pipe (303) through the air cylinder (4), and then the air supply pipe (303) inflates the flexible inflatable rubber (306), causing the flexible inflatable rubber (306) to expand, which in turn causes the cover plate (307) to expand outward. After the cover plate (307) expands outward, the maximum width, square coefficient, and mid-section coefficient of the submersible (1) all increase, and the volume of the middle part of the submersible (1) increases due to the expansion of the cover plate (307), which in turn increases the displacement. The longitudinal position of the buoyancy center moves towards the bow to the middle of the ship, and the longitudinal dip of the ship rotates towards the bow.

8. The working method of the flexible hull based on a small waterplane area catamaran as described in claim 6, characterized in that: The aerosol nozzle (7) is operated by continuously supplying air into the aerosol nozzle (7) through the aerosol injection cylinder (5), and the aerosol is ejected from the inside of the hull hull (6) to the outside of the ship. A one-way valve (8) is also provided inside the aerosol spray nozzle (7) to limit the spray direction of the aerosol from the inside to the outside.

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