Diversion tube device and catheter propeller

Abstract

The utility model belongs to the technical field of ship propellers, and discloses a flow guide pipe device and a guide pipe propeller. The flow guide pipe device comprises a pipe body, a sacrificial anode and a protective grating, the pipe body is used for surrounding a propeller, the pipe body is provided with a fluid inlet, and the fluid inlet is right opposite to the propeller; the sacrificial anode is provided with an outer surface deviating from the pipe body, the pipe body is provided with a peripheral surface deviating from the propeller, the sacrificial anode is connected to the pipe body, and the outer surface is smoothly connected with the peripheral surface; and the protective grating is connected to the pipe body over against the fluid inlet. The guide pipe propeller comprises the guide pipe device, the hydrodynamic performance of the guide pipe propeller can be improved, and the propelling efficiency is improved; the protective grating is arranged at the fluid inlet of the pipe body, so that sundries such as fishing nets and ice blocks in water can be blocked, damage to the propeller is avoided, and high practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of ship propulsion technology, and in particular to a guide tube device and a guide tube propulsion device. Background Technology

[0002] The ducted propulsion system is one of the most commonly used propulsion systems on ships. It consists of a propeller-type impeller and an annular duct surrounding the propeller. The duct reduces the adverse effects of oblique water flow on the propeller, thereby improving the stability of the ship in windy and wavy conditions. In addition, the duct protects the propeller from debris in the seawater that could damage the propulsion system.

[0003] To protect the propulsion pipe, sacrificial anodes are installed on it to form a galvanic cell with the pipe and slow down the corrosion rate. However, conventionally installed sacrificial anodes increase the resistance to relative motion with the water, thereby reducing the propulsion efficiency of the thruster. Furthermore, the sacrificial anodes are prone to detachment under the impact of water flow and other debris, which can cause localized corrosion of the pipe and exacerbate surface cavitation, posing a safety hazard to ship navigation. Utility Model Content

[0004] The purpose of this invention is to provide a guide tube device and a guide tube propulsion device, which can reduce the forward resistance of ships and extend their service life.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model provides a flow guide device, comprising:

[0007] A tube extending along a first direction, the tube being used to surround a propeller, the two ends of the tube along the first direction being a fluid inlet and a fluid outlet, the tube having an outer peripheral surface facing away from the propeller;

[0008] A sacrificial anode is connected to the tube body and disposed on the outer periphery of the fluid outlet, and the outer surface of the sacrificial anode is smoothly connected to the outer peripheral surface.

[0009] A protective grille is connected to the pipe body and disposed at the fluid inlet, the protective grille at least partially blocking the fluid inlet.

[0010] Preferably, the protective grille includes a support rib, one end of which is fixedly connected to the pipe body, and the other end of which extends radially along the pipe body.

[0011] Preferably, the protective grille further includes a grid frame, which is positioned opposite the fluid inlet and connected to the support rib.

[0012] Preferably, the grid frame includes a plurality of spaced partitions that extend in an arc around the circumference of the tube.

[0013] Preferably, multiple support ribs are provided, and the multiple support ribs are evenly connected to the tube body at intervals along the circumference of the tube body.

[0014] Preferably, a plurality of sacrificial anodes are provided, and the plurality of sacrificial anodes are evenly spaced along the circumferential direction of the tube body.

[0015] Preferably, an installation groove is provided on the outer peripheral surface, the sacrificial anode is disposed in the installation groove, and the installation groove surrounds the tube body.

[0016] Preferably, the diameter of the outer peripheral surface gradually decreases along the direction from the fluid inlet to the fluid outlet.

[0017] Preferably, the pipe body is provided with a hook.

[0018] The duct propulsion device includes a propeller and the aforementioned duct assembly, wherein the duct body surrounds the propeller, and the fluid outlet, the fluid inlet, and the propeller are coaxially arranged.

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

[0020] The flow guide device provided by this utility model includes a pipe body, a sacrificial anode, and a protective grid. The pipe body surrounds the propeller and has a fluid inlet and a fluid outlet distributed along a first direction. Therefore, the pipe body can protect the propeller inside, preventing oblique water flow and debris in the water from affecting the normal operation of the propeller. The pipe body has an outer peripheral surface facing away from the propeller. The sacrificial anode is connected to the pipe body, and the outer surface of the sacrificial anode is smoothly connected to the outer peripheral surface. Therefore, the sacrificial anode will not protrude from the outer peripheral surface of the pipe body, ensuring the streamlined design of the outer peripheral surface of the pipe body, thereby reducing the weight of the flow guide device. The design reduces resistance between the anode and the water body, improving the propulsion efficiency of the ducted thruster. Simultaneously, the smooth connection of the sacrificial anode's outer surface to the outer circumference effectively reduces the impact of water and debris on the sacrificial anode, allowing it to adhere more stably to the tube body and thus extending its service life. Furthermore, the presence of a protective grille at the fluid inlet of the tube body effectively blocks fishing nets, ice, and other debris from entering the tube and damaging the propeller, thereby further extending the ducted thruster's service life.

[0021] The ducted propeller provided by this utility model includes a propeller and the aforementioned guide tube device. The tube body surrounds the propeller, and the fluid outlet, fluid inlet, and propeller are coaxially arranged. The tube body can protect the propeller inside, preventing oblique water flow and debris in the water from affecting the normal operation of the propeller. Since the sacrificial anode is connected to the tube body and the outer surface of the sacrificial anode is smoothly connected to the outer circumference of the tube body, the ducted propeller can improve its hydrodynamic performance and increase propulsion efficiency. Since a protective grid is provided at the fluid inlet of the tube body, it can block fishing nets, ice blocks, and other debris in the water to avoid damaging the propeller, thus having strong practicality. Attached Figure Description

[0022] Figure 1 This is an isometric view of the guide tube device provided in a specific embodiment of this utility model;

[0023] Figure 2 This is a front view of the guide tube device provided in a specific embodiment of this utility model;

[0024] Figure 3 This is a side view of the guide tube device provided in a specific embodiment of this utility model.

[0025] In the picture:

[0026] 1-tube body; 11-outer peripheral surface;

[0027] 2-Sacrificial anode;

[0028] 3-Protective grille; 31-Supporting rib; 32-Partition plate;

[0029] 4-Hook. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] like Figure 1 and Figure 2 As shown, this utility model provides a flow guide device, which includes a tube body 1, a sacrificial anode 2, and a protective grid 3, extending along a first direction. The tube body 1 is used to surround the propeller, and the two ends of the tube body 1 along the first direction are a fluid inlet and a fluid outlet, respectively. The tube body 1 has an outer peripheral surface 11 facing away from the propeller. The sacrificial anode 2 is connected to the tube body 1 and is disposed on the outer periphery of the fluid outlet. The outer surface of the sacrificial anode 2 is smoothly connected to the outer peripheral surface 11. The protective grid 3 is connected to the tube body 1 and is disposed at the fluid inlet. The protective grid 3 at least partially blocks the fluid inlet.

[0035] In this embodiment, the tube body 1 protects the internal propeller, preventing oblique water flow and debris in the water from affecting the normal operation of the propeller. The tube body 1 has an outer peripheral surface 11 facing away from the propeller. The sacrificial anode 2 is connected to the tube body 1, and the outer surface of the sacrificial anode 2 is smoothly connected to the outer peripheral surface 11. Therefore, the sacrificial anode 2 does not protrude from the outer peripheral surface 11 of the tube body 1, ensuring the streamlined design of the outer peripheral surface 11 of the tube body 1. This reduces the resistance between the guide tube device and the water body and improves the propulsion efficiency of the guide tube propeller. At the same time, the design of the outer surface of the sacrificial anode 2, which is smoothly connected to the outer peripheral surface 11, can effectively reduce the impact of water and debris on the sacrificial anode 2, allowing the sacrificial anode 2 to adhere more stably to the tube body 1, thereby extending the service life of the sacrificial anode 2. Since the tube body 1 is provided with a protective grille 3, and the protective grille 3 is located at the fluid inlet of the tube body 1, the protective grille 3 can block fishing nets, ice blocks and other debris at the fluid inlet, preventing debris from entering the tube body 1 and damaging the propeller, thereby improving the service life of the guide tube propeller.

[0036] Specifically, the sacrificial anode 2 can be made of zinc, magnesium, aluminum or a combination of the above metals, depending on actual needs; the pipe body 1 has a fluid inlet and a fluid outlet. Water flows into the pipe body 1 from the fluid inlet and flows out of the pipe body 1 through the fluid outlet after being stirred by the propeller blades; the sacrificial anode 2 is welded to the outer peripheral surface 11. The shape of the sacrificial anode 2 can be designed according to actual needs, as long as its outer surface is smoothly connected to the outer peripheral surface 11.

[0037] The outer surface of the sacrificial anode 2 is smoothly connected to the outer peripheral surface 11, meaning that the outer surface and the outer peripheral surface 11 can be spliced ​​into a continuous surface. This helps maintain the streamlined design of the outer peripheral surface 11 of the tube body 1, improves the hydrodynamic performance of the guide pipe device, and thus reduces the resistance encountered by the ship during navigation. Specifically, since the outer peripheral surface 11 of the tube body 1 is an arc-shaped surface curved circumferentially, and the outer surface of the sacrificial anode 2 is an arc-shaped surface with a certain curvature, and its curvature is the same as that of the outer peripheral surface 11 of the tube body 1, the outer surface of the sacrificial anode 2 can be smoothly spliced ​​with the outer peripheral surface 11 of the tube body 1.

[0038] The specific structure of the protective grille 3 can be configured according to actual needs, as long as it can be stably connected to the pipe body 1 and can protect the internal propeller. For example, such as Figure 1 and Figure 3 As shown, the protective grid 3 includes a support rib 31, one end of which is fixedly connected to the pipe body 1, and the other end of which extends radially along the pipe body 1.

[0039] like Figure 1 and Figure 2As shown, the protective grid 3 also includes a grid frame, which is positioned opposite the fluid inlet and connected to the support rib 31. The grid frame and the support rib 31 are detachably connected.

[0040] Specifically, the grid frame includes several spaced-apart partitions 32. The partitions 32 extend in an arc around the circumference of the pipe body 1, and the spaced-apart partitions 32 form gaps for water to flow through. The partitions 32 can prevent debris or fishing nets in the water from accidentally entering the pipe body 1 and damaging the propeller. In this embodiment, the support ribs 31 are arranged along the circumference of the pipe body 1 and are welded to the pipe body 1. The partitions 32 are detachably connected to the support ribs 31 by bolts. In order not to affect the connection between the duct and the propeller gearbox, two protective grids 3 are provided. The two protective grids 3 are symmetrically arranged on the pipe body 1 about the vertical mounting bracket. Each protective grid 3 has four support ribs 31 and two partitions 32. The installation space between the two protective grids 3 is reserved for the vertical mounting bracket and the duct propeller gearbox.

[0041] Furthermore, such as Figure 2 As shown, multiple support ribs 31 are provided. The multiple support ribs 31 are evenly connected to the pipe body 1 along the circumference of the pipe body 1. The support ribs 31 are welded to the pipe body 1. The multiple support ribs 31 can make the grid frame connection more stable and reliable. Specifically, the shape of the support ribs 31 can be set according to actual needs, such as L-shaped or triangular, as long as it can connect the grid frame to the pipe body 1. In this embodiment, the support ribs 31 are L-shaped.

[0042] To ensure the protective effect on pipe body 1 and effectively prevent pipe body 1 from being corroded by seawater, such as Figure 1 and Figure 3 As shown, multiple sacrificial anodes 2 are provided, and the multiple sacrificial anodes 2 are evenly spaced along the circumference of the pipe body 1; specifically, the evenly arranged sacrificial anodes 2 can form uniform protection for all parts of the pipe body 1, preventing local corrosion due to uneven protection effect.

[0043] like Figure 1 and Figure 3 As shown, an installation groove is provided on the outer peripheral surface 11, and the sacrificial anode 2 is disposed in the installation groove. The installation groove surrounds the tube body 1. The sacrificial anode 2 can be designed to be any length along the circumference of the tube body 1 according to actual needs, thereby improving the adaptability of the installation groove.

[0044] like Figure 1As shown, the fluid outlet of the pipe body 1 is positioned directly opposite the fluid inlet. The mounting groove is located on the outer peripheral surface 11 near the fluid outlet. The sacrificial anode 2 is positioned on the mounting groove near the fluid outlet to prevent the water flow from directly impacting the sacrificial anode 2 and causing it to be damaged or fall off. At the same time, the mounting groove is located on the outer peripheral surface 11 near the fluid outlet, which further reduces the resistance between the sacrificial anode and the water.

[0045] Specifically, along the direction from the fluid inlet to the fluid outlet, the diameter of the outer peripheral surface 11 gradually decreases, making the tube body 1 more streamlined, thereby further reducing the forward resistance.

[0046] like Figure 2 and Figure 3 As shown, a hook 4 is provided on the pipe body 1. The hook 4 is used to connect with the hoisting equipment, thereby facilitating the hoisting of the guide pipe device. Specifically, the hook 4 is provided on the outer circumferential surface 11 of the pipe body 1 and is integrally formed with the pipe body 1. Workers can use the hoisting equipment to hoist the pipe body 1 through the hook 4, which saves time and effort and is easy to operate.

[0047] This embodiment also provides a duct propulsion device, which includes a propeller and the above-mentioned guide tube device. The tube body 1 is surrounded by the propeller, and the fluid outlet, fluid inlet and propeller are coaxially arranged.

[0048] In this embodiment, the tube body 1 surrounds the propeller, and the fluid outlet, fluid inlet, and propeller are coaxially arranged. The tube body 1 can protect the propeller inside, preventing oblique water flow and debris in the water from affecting the normal operation of the propeller. Since the sacrificial anode 2 is connected to the tube body 1 and the outer surface of the sacrificial anode 2 is smoothly connected to the outer peripheral surface 11 of the tube body 1, the duct propeller can improve its hydrodynamic performance and increase propulsion efficiency. Since a protective grid 3 is provided at the fluid inlet of the tube body 1, it can block fishing nets, ice blocks, and other debris in the water to avoid damage to the propeller, thus having strong practicality.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A flow guide device, characterized in that, include: A tube (1) extends along a first direction and is used to surround a propeller. The two ends of the tube (1) along the first direction are a fluid inlet and a fluid outlet, respectively. The tube (1) has an outer peripheral surface (11) facing away from the propeller. A sacrificial anode (2) is connected to the tube body (1) and disposed on the outer periphery of the fluid outlet, and the outer surface of the sacrificial anode (2) is smoothly connected to the outer peripheral surface (11); A protective grille (3) is connected to the pipe body (1) and disposed at the fluid inlet, wherein the protective grille (3) at least partially blocks the fluid inlet.

2. The guide tube device according to claim 1, characterized in that, The protective grille (3) includes a support rib (31), one end of which is fixedly connected to the tube body (1), and the other end of which extends radially along the tube body (1).

3. The guide tube device according to claim 2, characterized in that, The protective grille (3) also includes a grille frame, which is positioned opposite the fluid inlet and connected to the support rib (31).

4. The guide tube device according to claim 3, characterized in that, The grid frame includes a number of spaced partitions (32) that extend in an arc around the circumference of the tube body (1).

5. The guide tube device according to claim 2, characterized in that, The support ribs (31) are provided in multiple ways, and the multiple support ribs (31) are evenly connected to the tube body (1) at circumferential intervals.

6. The guide tube device according to claim 1, characterized in that, Multiple sacrificial anodes (2) are provided, and the multiple sacrificial anodes (2) are evenly spaced along the circumferential direction of the tube body (1).

7. The guide tube device according to claim 6, characterized in that, An installation groove is provided on the outer peripheral surface (11), and the sacrificial anode (2) is disposed in the installation groove, which surrounds the tube body (1).

8. The guide tube device according to claim 1, characterized in that, Along the direction from the fluid inlet to the fluid outlet, the diameter of the outer peripheral surface (11) gradually decreases.

9. The flow guide device according to any one of claims 1-8, characterized in that, The pipe body (1) is provided with a hook (4).

10. A duct pusher, characterized in that, The device includes a propeller and a flow guide tube as described in any one of claims 1-9, wherein the tube body (1) surrounds the propeller, and the fluid outlet, the fluid inlet and the propeller are coaxially arranged.

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