Sacrificial anode device and ship

Abstract

The utility model belongs to the technical field of sacrificial anodes, and discloses a sacrificial anode device and a ship. The sacrificial anode device is arranged on a propeller, the propeller comprises a shaft tunnel pipe, the sacrificial anode device comprises a support assembly, the shaft tunnel pipe is provided with a mounting port, and the support assembly is located at the mounting port and connected with the shaft tunnel pipe; and at least part of the anode body is embedded in the mounting opening and connected with the support assembly, and the side, facing the interior of the axial tunnel pipe, of the anode body is flush with the inner wall of the axial tunnel pipe. The inner wall of the shaft tunnel pipe is smooth, fluid resistance in the shaft tunnel pipe is reduced, thrust loss is reduced, the shaft tunnel pipe can be fully protected, the service life of the shaft tunnel pipe is prolonged, and therefore accurate berthing and positioning of a ship are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sacrificial anodes, in particular to a sacrificial anode device and a ship. Background Art

[0002] The sacrificial anode protection method usually uses metals with higher oxidation properties and are more susceptible to oxidation corrosion (such as magnesium alloys) as anodes and is placed on the hull or propeller of the ship to protect the hull or propeller.

[0003] Existing thrusters typically include a tunnel and a propeller. The propeller is disposed within the tunnel to provide power for the vessel. Conventional sacrificial anode devices are disposed on the inner wall of the tunnel, protruding toward the interior of the tunnel. Using sacrificial anodes protruding from the inner wall of the tunnel increases fluid resistance within the tunnel, leading to increased thrust loss and reduced propulsion efficiency. Under the action of the predetermined thrust, the vessel cannot reach the designated berthing location, thereby affecting the vessel's accurate berthing and positioning.

[0004] Therefore, there is an urgent need for a sacrificial anode device and a ship to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a sacrificial anode device, which can reduce the fluid resistance in the shaft tunnel, reduce thrust loss, improve propulsion efficiency, and thus achieve accurate berthing and positioning of ships.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A sacrificial anode device is provided on a propeller, wherein the propeller includes a shaft tunnel. The sacrificial anode device includes:

[0008] A bracket assembly, wherein the shaft tunnel is provided with a mounting opening, the bracket assembly is located at the mounting opening and is connected to the shaft tunnel;

[0009] The anode body, at least a portion of which is embedded in the installation opening and connected to the bracket assembly, and a side of the anode body facing the shaft tunnel is flush with the inner wall of the shaft tunnel.

[0010] Preferably, a guide groove is provided on a side of the anode body facing the interior of the shaft tunnel.

[0011] Preferably, the length direction of the guide groove forms a preset angle α with the axial direction of the shaft tunnel pipe, and the preset angle α is greater than or equal to 0 degrees and less than 90 degrees.

[0012] Preferably, the bracket assembly includes a shell and a bracket, the shell is connected to the outer wall of the shaft tunnel, and the bracket passes through the anode body and is connected to the shell.

[0013] Preferably, the housing is connected to the shaft tunnel by welding; or,

[0014] The housing is fixed on the shaft tunnel through a first fastener.

[0015] Preferably, the sacrificial anode device further comprises a waterproof sealing cover, which is provided on the first fastener and is sealed with the shell.

[0016] Preferably, a streamlined protrusion is provided on a side of the anode body facing away from the interior of the shaft tunnel, and a groove matching the streamlined protrusion is provided on the shell, and the streamlined protrusion is located in the groove.

[0017] Preferably, the bracket includes a bending portion and a connecting portion, the connecting portions are respectively provided at both ends of the bending portion, the bending portion is arranged in the anode body, and the connecting portion is connected to the shell.

[0018] Preferably, it comprises a hull, a propeller and a sacrificial anode device, the propeller comprises a shaft tunnel and a power assembly, the shaft tunnel is arranged at the bottom of the hull, at least part of the power assembly is located in the shaft tunnel, and the side wall of the shaft tunnel is provided with the sacrificial anode device.

[0019] Preferably, the ship comprises a plurality of the sacrificial anode devices, and the plurality of the sacrificial anode devices are evenly distributed along the circumference and / or axial direction of the shaft tunnel.

[0020] Another object of the present invention is to provide a ship that, by adopting the above-mentioned sacrificial anode device, can ensure that the shaft tunnel pipe is fully protected and increase the service life of the shaft tunnel pipe.

[0021] To achieve this purpose, the present invention adopts the following technical solutions:

[0022] A ship comprises a hull, a propeller and a sacrificial anode device. The propeller comprises a shaft tunnel and a power assembly. The shaft tunnel is arranged at the bottom of the hull, at least part of the power assembly is located in the shaft tunnel, and the sacrificial anode device is provided on the side wall of the shaft tunnel.

[0023] Preferably, the ship comprises a plurality of the sacrificial anode devices, and the plurality of the sacrificial anode devices are evenly distributed along the circumference and / or axial direction of the shaft tunnel.

[0024] Beneficial effects:

[0025] The utility model provides a sacrificial anode device, which is arranged on a shaft tunnel pipe of a thruster. A mounting opening is provided on the shaft tunnel pipe. The sacrificial anode device comprises a bracket assembly and an anode body. The bracket assembly is located at the mounting opening and is connected to the shaft tunnel pipe. At least part of the anode body is embedded in the mounting opening and is connected to the bracket assembly. The side of the anode body facing the inside of the shaft tunnel pipe is flush with the inner wall of the shaft tunnel pipe, so that the inner wall of the shaft tunnel pipe is smooth, the fluid resistance in the shaft tunnel pipe is reduced, the thrust loss is reduced, the propulsion efficiency is improved, and the accurate berthing and positioning of the ship is achieved.

[0026] A ship of the present invention, by adopting the above-mentioned sacrificial anode device, can fully protect the shaft tunnel pipe, increase the service life of the shaft tunnel pipe, reduce thrust loss, improve propulsion efficiency, and thus achieve accurate berthing and positioning of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a first schematic diagram of the shaft tunnel provided by an embodiment of the present utility model;

[0028] Figure 2 This is a second schematic diagram of the shaft tunnel provided by an embodiment of the present utility model;

[0029] Figure 3 yes Figure 2 Cross-section of the sacrificial anode assembly at AA in the middle;

[0030] Figure 4 yes Figure 3 Schematic diagram of the sacrificial anode device from the perspective of point B.

[0031] In the picture:

[0032] 1. Anode body; 11. Guide groove;

[0033] 2. Bracket assembly;

[0034] 21. Bracket; 211. Connecting portion; 212. Bend portion; 213. Curved portion;

[0035] 22. Housing; 221. Streamlined convex portion; 222. Fixing portion;

[0036] 3. Propeller;

[0037] 31. Axial tunnel pipe;

[0038] 32. Power assembly; 321. Propeller; 322. Motor. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0040] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0043] This embodiment provides a ship, such as Figure 1-Figure 2 As shown, the ship includes a hull (not shown in the figure), a propeller 3 and a sacrificial anode device. The propeller 3 includes a shaft tunnel 31 and a power assembly 32. The shaft tunnel 31 is arranged at the bottom of the hull. At least part of the power assembly 32 is located in the shaft tunnel 31, which is used to provide power for the forward movement and steering of the ship. The side wall of the shaft tunnel 31 is provided with a sacrificial anode device, which is protected by the corrosion and dissolution of the sacrificial anode device. The side of the sacrificial anode device facing the inside of the shaft tunnel is flush with the inner wall of the shaft tunnel 31, which can reduce thrust loss, improve propulsion efficiency, and thus achieve accurate berthing and positioning of the ship.

[0044] like Figure 2 As shown, in this embodiment, the axis direction of the shaft tunnel 31 is a first direction, and the power assembly 32 is capable of driving the water flow in the shaft tunnel 31 to move in the first direction. Specifically, the power assembly 32 includes a propeller 321 and a motor 322. The motor 322 is disposed outside the shaft tunnel 31, and the propeller 321 is disposed inside the shaft tunnel 31. The motor 322 is capable of driving the propeller 321 to rotate so that the water flow in the shaft tunnel 31 flows in the first direction.

[0045] This embodiment provides a sacrificial anode device, which is arranged on the shaft tunnel 31 of the above-mentioned ship, such as Figure 3 As shown, the sacrificial anode device includes a bracket assembly 2 and an anode body 1. A mounting opening is provided on the shaft tunnel 31, and the bracket assembly 2 is located in the mounting opening and connected to the shaft tunnel 31. At least a portion of the anode body 1 is embedded in the mounting opening and connected to the bracket assembly 2. The side of the anode body 1 facing the inside of the shaft tunnel 31 is flush with the inner wall of the shaft tunnel 31, making the inner wall of the shaft tunnel 31 smooth, reducing fluid resistance in the shaft tunnel 31, reducing thrust loss, and improving propulsion efficiency.

[0046] like Figure 4 As shown, in this embodiment, a guide groove 11 is provided on the side of the anode body 1 facing the inside of the shaft tunnel tube 31. The setting of the guide groove 11 can provide a guiding effect for the fluid in the shaft tunnel tube 31, further reduce the fluid resistance in the shaft tunnel tube 31, reduce thrust loss, and improve propulsion efficiency.

[0047] Optionally, the length direction of the guide groove 11 forms a preset angle α with the axial direction of the shaft tunnel 31, and the preset angle α is greater than or equal to 0 degrees and less than 90 degrees. It is understood that the water flow in the shaft tunnel 31 can flow along a first direction, the first end of the guide groove 11 is located upstream of the water flow, and the second end of the guide groove 11 is located downstream of the water flow. The direction from the first end of the guide groove 11 to the second end of the guide groove 11 forms a preset angle α with the first direction, and the preset angle α is greater than or equal to 0 degrees and less than 90 degrees. Within this angle range, the water flow direction in the shaft tunnel 31 is consistent, the diversion effect is good, and the propulsion efficiency of the power assembly 32 is improved.

[0048] Optionally, the preset angle α can be 0 degrees, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, etc. In this embodiment, the preset angle α is 30 degrees, which can optimize the water flow diversion effect and improve the propulsion efficiency of the power assembly. In other embodiments, the preset angle α is not limited to a specific value, as long as it can guide the water flow in the shaft tunnel 31.

[0049] Optionally, a plurality of guide grooves 11 may be provided on the anode body 1, and the width and depth of each guide groove 11 are consistent so that the guide efficiency of each guide groove 11 on the anode body 1 is consistent. In this embodiment, four guide grooves 11 are provided on the anode body 1. In other embodiments, five, six, seven, eight, etc. guide grooves 11 may be provided on the anode body 1. The number of guide grooves 11 can be flexibly adjusted according to the length of the anode body 1, and there is no specific limitation on the number of guide grooves 11 provided on the anode body 1.

[0050] like Figure 3 As shown, the bracket assembly 2 includes a shell 22 and a bracket 21. The shell 22 is connected to the outer wall of the shaft tunnel 31. The bracket 21 passes through the anode body 1 and is connected to the shell 22. That is, the anode body 1 is connected to the bracket 21, the bracket 21 is connected to the shell 22, and the shell 22 is connected to the shaft tunnel 31, thereby fixing the anode body 1 to the shaft tunnel 31 and ensuring the stability of the anode body 1.

[0051] Optionally, the material of the shaft tunnel tube 31 can be steel, and the materials of the shell 22 and the bracket 21 are consistent with the material of the shaft tunnel tube 31, both of which are steel. The material of the anode body 1 can be a magnesium-based alloy, a zinc-based alloy and an aluminum-based alloy, which are not specifically limited here. The shaft tunnel tube 31 can be protected by the corrosion of the anode body 1.

[0052] In this embodiment, the shell 22 is welded to the shaft tunnel 31; the installation method of welding the shell 22 to the shaft tunnel 31 ensures the reliability of the connection between the shell 22 and the shaft tunnel 31, thereby ensuring that the anode body 1 is firmly set on the shaft tunnel 31 and protecting the shaft tunnel 31.

[0053] In other embodiments, the housing 22 is fixed to the shaft tunnel 31 by a first fastener, which facilitates installation, removal, and replacement of the housing 22 and improves operational convenience. The first fastener can be a bolt, stud, or screw, which is not specifically limited here.

[0054] Optionally, the sacrificial anode device also includes a waterproof sealing cover (not shown in the figure), which is provided on the first fastener and is sealed with the shell 22 to prevent the first fastener from being corroded, thereby increasing the service life of the first fastener and ensuring the reliability of the connection between the shell 22 and the shaft tunnel 31.

[0055] In this embodiment, the bracket 21 is fixed to the shell 22 by a second fastener, so that the anode body 1 can be pre-installed on the shaft tunnel 31. This facilitates operation and avoids the need to install the anode body 1 after the entire hull is installed. This improves work efficiency and facilitates subsequent removal and replacement of the anode body 1. The second fastener can be a bolt, stud, or screw, which is not specifically limited here.

[0056] In other embodiments, the bracket 21 is welded to the shell 22 to improve the tightness of the connection between the bracket 21 and the shell 22. Other installation methods are not specifically limited here.

[0057] like Figure 3 As shown, in this embodiment, a streamlined protrusion is provided on the side of the anode body 1 facing away from the interior of the shaft tunnel 31. The housing 22 is provided with a groove that matches the streamlined protrusion, with the streamlined protrusion located within the groove. The anode body 1 and the housing 22 are configured to fit together in a concave-convex manner. The housing 22 protects the anode body 1 while reducing frictional wear and erosion caused by the fluid outside the shaft tunnel 31.

[0058] Specifically, the shell 22 includes a streamlined protrusion 221 and a fixing portion 222. The streamlined protrusion 221 protrudes toward the side away from the shaft tunnel tube 31 to form a groove on the side facing the shaft tunnel tube 31. The anode body 1 is located in the groove. The two ends of the streamlined protrusion 221 are respectively provided with a fixing portion 222. The fixing portions 222 at both ends of the streamlined protrusion 221 are respectively connected to the shaft tunnel tube 31 to achieve a stable connection relationship.

[0059] like Figure 3 As shown, the bracket 21 includes a bent portion 212 and a connecting portion 211. The connecting portions 211 are respectively provided at both ends of the bent portion 212. The bent portion 212 is disposed in the anode body 1, and the connecting portion 211 is connected to the housing 22. The bracket 21 can achieve a stable connection with the housing 22 and effectively support the anode body 1.

[0060] Optionally, the bent portion 212 is trapezoidal, capable of withstanding radial pressure from the anode body 1, thereby providing enhanced support stability. The bracket 21 further includes a curved portion 213, which is streamlined to match the anode body 1 and effectively support the anode body 1. Other design options for the bracket 21 are not specifically limited herein, provided they effectively support the anode body 1.

[0061] like Figure 1 As shown, multiple sacrificial anode devices can be installed on the hull of the ship, and multiple installation ports can be opened on the shaft tunnel pipe 31. The installation ports correspond to the anode bodies 1 one by one. An anode body 1 is set at each installation port, which can fully protect the shaft tunnel pipe 31, improve the service life of the shaft tunnel pipe 31, reduce thrust loss, improve propulsion efficiency, and thus achieve accurate berthing and positioning of the ship.

[0062] like Figure 1As shown, multiple mounting openings can be arranged at intervals along the axial direction of the shaft tunnel 31, and an anode body 1 is provided at each mounting opening, which can fully protect the shaft tunnel 31 and improve the service life of the shaft tunnel 31. In this embodiment, two mounting openings are evenly distributed along the axial direction of the shaft tunnel 31, and correspondingly, two anode bodies 1 are provided along the axial direction of the shaft tunnel 31. In other embodiments, multiple mounting openings can be evenly distributed along the axial direction of the shaft tunnel 31, and the number of mounting openings provided can be consistent with the number of anode bodies 1 provided, and is not specifically limited here.

[0063] like Figure 2 As shown, multiple mounting openings can be spaced apart along the circumference of the shaft tunnel 31, with an anode body 1 disposed at each mounting opening. This can provide adequate protection for the shaft tunnel 31 and increase its service life. In this embodiment, eight mounting openings are evenly distributed along the circumference of the shaft tunnel 31, and correspondingly, eight anode bodies 1 are disposed along the circumference of the shaft tunnel 31. In other embodiments, multiple mounting openings can be evenly distributed along the circumference of the shaft tunnel 31, and the number of mounting openings provided can be consistent with the number of anode bodies 1 provided, and this is not specifically limited herein.

[0064] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A sacrificial anode device, arranged on a propeller (3), wherein the propeller (3) comprises a shaft tunnel (31), characterized in that: The sacrificial anode device comprises: A bracket assembly (2), wherein the shaft tunnel tube (31) is provided with a mounting opening, and the bracket assembly (2) is located at the mounting opening and connected to the shaft tunnel tube (31); An anode body (1), at least a portion of which is embedded in the mounting opening and connected to the bracket assembly (2), and a side of the anode body (1) facing the inside of the shaft tunnel (31) is flush with the inner wall of the shaft tunnel (31).

2. The sacrificial anode device according to claim 1, characterized in that: A guide groove (11) is provided on one side of the anode body (1) facing the interior of the shaft tunnel (31).

3. The sacrificial anode device according to claim 2, characterized in that: The length direction of the guide groove (11) and the axial direction of the shaft tunnel (31) form a preset angle α, and the preset angle α is greater than or equal to 0 degrees and less than 90 degrees.

4. The sacrificial anode device according to claim 1, characterized in that: The support assembly (2) comprises a shell (22) and a support (21); the shell (22) is connected to the outer wall of the shaft tunnel (31); and the support (21) passes through the anode body (1) and is connected to the shell (22).

5. The sacrificial anode device according to claim 4, characterized in that: The housing (22) is connected to the shaft tunnel (31) by welding; or, The housing (22) is fixed to the shaft tunnel (31) via a first fastener.

6. The sacrificial anode device according to claim 5, characterized in that: The sacrificial anode device further comprises a waterproof sealing cover, which is arranged on the first fastener and is sealedly connected to the shell (22).

7. The sacrificial anode device according to claim 4, characterized in that: A streamlined protrusion is provided on the side of the anode body (1) facing away from the interior of the shaft tunnel (31), and a groove matching the streamlined protrusion is provided on the shell (22), and the streamlined protrusion is located in the groove.

8. The sacrificial anode device according to claim 4, characterized in that: The bracket (21) comprises a bending portion (212) and a connecting portion (211); the connecting portions (211) are respectively provided at both ends of the bending portion (212); the bending portion (212) is arranged in the anode body (1); and the connecting portion (211) is connected to the shell (22).

9. A ship, characterized in that: The invention comprises a hull, a propeller (3) and a sacrificial anode device according to any one of claims 1 to 8, wherein the propeller (3) comprises a shaft tunnel (31) and a power assembly (32), the shaft tunnel (31) is arranged at the bottom of the hull, at least part of the power assembly (32) is located in the shaft tunnel (31), and the side wall of the shaft tunnel (31) is provided with the sacrificial anode device.

10. The ship according to claim 9, characterized in that The ship comprises a plurality of sacrificial anode devices, and the plurality of sacrificial anode devices are evenly distributed along the circumferential direction and / or axial direction of the shaft tunnel (31).

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