Multi-stage sealed bow thrust seal cover

Abstract

The utility model relates to the technical field of ship side thrusters, and discloses a multi-stage sealed bow side thruster sealing cover which comprises a side thruster pipeline, a side thruster is arranged in the side thruster pipeline, a hydraulic part is arranged in the side thruster pipeline, and a sealing cover is hinged to the end, away from the interior of the side thruster pipeline, of the hydraulic part. A connecting block is fixedly connected to the outer wall of the sealing cover, a sealing ring is fixedly connected to the end, away from the sealing cover, of the connecting block, a sealing rubber ring is detachably connected to the side, close to the side pushing pipeline, of the sealing ring, and an annular air bag is fixedly connected between the sealing cover and a crack of the sealing ring. According to the side thrust pipeline sealing device, through cooperation of the sealing cover, the connecting block, the sealing ring, the sealing rubber ring, the annular air bag, the drainage hole and the drainage pipe, after the sealing cover shields and protects the end of the side thrust pipeline, sealing treatment can be conducted on the connecting positions of the sealing cover, the side thrust pipeline and the ship body twice in sequence, and the sealing effect on the interior of the side thrust pipeline is improved.

Description

Technical Field

[0001] This utility model relates to the field of ship thruster technology, and in particular to a multi-stage sealing bow thruster cover. Background Technology

[0002] The bow thruster is a tunnel propulsion device that plays an important role in modern ship maneuvering systems, improving the ship's maneuverability. However, the installation of the bow thruster will increase the ship's drag during navigation. Therefore, in order to reduce the drag when the ship is sailing straight, the technology of adding bow thrust caps to both ends of the bow thrust tunnel is adopted to improve the ship's speed and economy, reduce the loss of lateral thrust, and improve hydrodynamic performance.

[0003] A search revealed Chinese Patent Publication No. CN206327554U, which discloses a ship's side thrust device with a watertight side thrust cover. The side thrust cover is fixed to the side thrust tunnel by a hydraulic mechanism, enabling a watertight connection with the side thrust tunnel. A drain hole is provided on the bottom surface of the side thrust tunnel, and the drain hole is connected to a drain pump through a drain pipe. When the ship is not using the side thrust function, the side thrust cover can achieve a watertight connection with the side thrust tunnel, and then the drain pump is used to discharge seawater in the side thrust tunnel through the drain hole, preventing seawater from remaining in the side thrust tunnel and causing the growth of marine organisms inside the side thrust tunnel.

[0004] In actual use, when the aforementioned sealing structure seals the thrust pipe with the side thrust cap, the thrust pipe needs to fit tightly against the connection point between the thrust pipe and the outer wall of the hull. However, due to the influence of production precision and wear during use, the cap cannot fit completely against the connection point, which will affect the sealing effect. If only a rubber gasket is used for sealing, the corrosive nature of seawater will accelerate the hardening of the rubber products, which will affect the service life of the rubber gasket and the sealing effect. Therefore, a multi-stage sealing bow thrust cap is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a multi-stage sealing bow thruster cover, which aims to improve the risk of gaps arising at the connection points between the cover and the thruster tube and the outer wall of the hull in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-stage sealing bow thruster cover, comprising a thruster pipe, a thruster propeller disposed inside the thruster pipe, a hydraulic component disposed inside the thruster pipe, a sealing cover hinged to one end of the hydraulic component away from the inside of the thruster pipe, a connecting block fixedly connected to the outer wall of the sealing cover, a sealing ring fixedly connected to one end of the connecting block away from the sealing cover, a sealing rubber ring detachably connected to one side of the sealing ring near the thruster pipe, and an annular airbag fixedly connected between the sealing cover and the sealing ring.

[0007] As a further description of the above technical solution:

[0008] An annular filter screen is fixedly connected to the side of the connecting block away from the side push pipe, and the annular airbag is located on the side of the connecting block closer to the side push pipe.

[0009] As a further description of the above technical solution:

[0010] The center of the inner and outer surfaces of the annular airbag is fixedly connected to the outer wall of the sealing cap and the inner wall of the sealing ring, respectively.

[0011] As a further description of the above technical solution:

[0012] The sealing ring has an inclined structure on the side surface away from the side push pipe.

[0013] As a further description of the above technical solution:

[0014] The bottom surface of the side-push pipe is provided with a drainage hole, and a drainage pipe is fixedly connected to the bottom end of the drainage hole.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the annular filter mesh fits into the outer wall of the sealing cap and the inner wall of the sealing ring.

[0017] As a further description of the above technical solution:

[0018] The size of the sealing cap is adapted to the size of the side-push pipe.

[0019] As a further description of the above technical solution:

[0020] The sealing ring is fitted onto the outside of the sealing cover.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by combining the sealing cover, connecting block, sealing ring, sealing rubber ring, annular airbag, drainage hole and drainage pipe, the inside of the side thrust pipe can be quickly sealed. After the sealing cover protects the end of the side thrust pipe, the connection between the sealing cover and the side thrust pipe and the hull can be sealed twice, thereby improving the sealing effect of the inside of the side thrust pipe.

[0023] 2. In this utility model, the annular filter screen can reduce the contact between sharp objects and the annular airbag, thereby reducing the possibility of damage to the annular airbag caused by sharp objects. At the same time, the inclined structure of the sealing ring can reduce the impact of the wall thickness of the sealing cover and sealing ring on the ship's running resistance. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall multi-stage sealing bow-side push-lock cover proposed in this utility model;

[0025] Figure 2 This is a schematic cross-sectional view of the front portion of a multi-stage sealing bow-side push-lock cover proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the sealing cover, sealing ring, and annular filter screen of a multi-stage sealing bow-side push-lock cover proposed in this utility model;

[0027] Figure 4 This is a schematic cross-sectional view of the sealing cover and the annular filter screen of a multi-stage sealing bow-side push-lock cover proposed in this utility model.

[0028] Figure 5 This utility model proposes a multi-stage sealing bow-side push-lock cover. Figure 4 A schematic diagram of part A.

[0029] Legend:

[0030] 1. Side-push pipe; 2. Side-push thruster; 3. Hydraulic components; 4. Sealing cover; 5. Connecting block; 6. Sealing ring; 7. Sealing rubber ring; 8. Annular airbag; 9. Annular filter screen; 10. Drain hole; 11. Drain pipe. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-2One embodiment of this utility model is a multi-stage sealed bow thruster cover, including a thruster pipe 1. A thruster 2 is installed inside the thruster pipe 1. When the thruster 2 is activated, it can generate a jet stream towards the side of the ship to generate a lateral force acting on the hull. The magnitude and direction of the force can be directly controlled by a handle on the bridge to turn the ship or keep it stable. A hydraulic component 3 is installed inside the thruster pipe 1. A sealing cover 4 is hinged to one end of the hydraulic component 3 away from the inside of the thruster pipe 1.

[0033] Hydraulic component 3 includes a connecting frame and an adjusting cylinder. The connecting frame has a bent structure, and its upper end is hinged to the upper side of the side push pipe 1. By connecting to an external drive component, the connecting frame can perform rocker arm movement, thereby driving the sealing cover 4 to open or close when the connecting frame moves. One end of the adjusting cylinder is hinged to the inner wall of the connecting frame, and the other end is hinged to the outer wall of the sealing cover 4. The posture of the sealing cover 4 can be controlled by the adjusting cylinder. The above structure is a prior art in this field and will not be described in detail here. The size of the sealing cover 4 is adapted to the size of the side push pipe 1. When the sealing cover 4 is rotated to fit against the end of the side push pipe 1, the inside of the side push pipe 1 can be sealed.

[0034] Reference Figures 3-5 A connecting block 5 is fixedly connected to the outer wall of the sealing cover 4. A sealing ring 6 is fixedly connected to the end of the connecting block 5 away from the sealing cover 4. When the sealing cover 4 moves, the sealing ring 6 can be driven to move synchronously through the connecting block 5. The sealing ring 6 is sleeved on the outside of the sealing cover 4. The surface of the sealing ring 6 away from the side thrust pipe 1 is set with an inclined structure. When the sealing cover 4 rotates to seal the inside of the side thrust pipe 1, it will drive the sealing ring 6 to move synchronously. At this time, during the movement of the ship, the water flow can flow outward along the inclined surface of the sealing ring 6, which can reduce the influence of the wall thickness of the sealing cover 4 and sealing ring 6 on the ship's running resistance. A sealing rubber ring 7 is detachably connected to the side of the sealing ring 6 near the side thrust pipe 1.

[0035] When the sealing cover 4 rotates to fit against the end of the side thrust pipe 1, it will drive the sealing ring 6 to move synchronously, and drive the sealing rubber ring 7 to fit against the outer wall of the ship, and squeeze the sealing rubber ring 7, causing the sealing rubber ring 7 to compress and deform, filling the gap between the sealing ring 6 and the outer wall of the ship, thereby improving the sealing effect between the sealing cover 4 and the inside of the side thrust pipe 1.

[0036] An annular airbag 8 is fixedly connected between the gap between the sealing cover 4 and the sealing ring 6. The annular airbag 8 is located on the side of the connecting block 5 near the side thrust pipe 1. The annular airbag 8 can fill and seal the gap between the sealing cover 4 and the sealing ring 6 to prevent water from entering the side thrust pipe 1 from here. When the hull is launched, the deeper the hull's draft, the greater the water pressure will be, and the greater the squeezing force on the annular airbag 8 will also be.

[0037] The bottom surface of the side thrust pipe 1 is provided with a drain hole 10. The bottom end of the drain hole 10 is fixedly connected to a drain pipe 11, which can be connected to a water pump. After the sealing cover 4 seals the inside of the side thrust pipe 1, the water pump can be started to pump out the water inside the side thrust pipe 1, so as to prevent the water from staying in the side thrust pipe 1 and causing the growth of organisms and bacteria. When the water volume inside the side thrust pipe 1 decreases rapidly, the internal air pressure will decrease. At this time, the water pressure outside the hull will squeeze the annular airbag 8, causing the annular airbag 8 to deform closer to the hull. This allows the annular airbag 8 to further fill and seal the inside of the sealing ring 7, achieving multi-stage sealing and improving the sealing effect inside the side thrust pipe 1. This prevents the sealing ring 7 from hardening after long-term use, which would affect the sealing effect inside the side thrust pipe 1.

[0038] Reference Figure 1 and Figure 5 The center of the inner and outer surfaces of the annular airbag 8 is fixedly connected to the outer wall of the sealing cover 4 and the inner wall of the sealing ring 6, respectively. The left and right sides of the outer wall of the annular airbag 8 are not fixed to any object, which can seal the gap between the sealing cover 4 and the sealing ring 6. At the same time, it allows the left and right ends of the annular airbag 8 to deform to a greater extent, which can ensure the sealing effect inside the side push pipe 1. The connecting block 5 is fixedly connected to the side away from the side push pipe 1 with an annular filter screen 9. The outer wall of the annular filter screen 9 fits against the outer wall of the sealing cover 4 and the inner wall of the sealing ring 6. The annular filter screen 9 can filter the gap between the sealing cover 4 and the sealing ring 6, which can prevent sharp objects from entering the gap and causing damage to the annular airbag 8 when the annular airbag 8 recovers its deformation, thus reducing the contact between sharp objects and the annular airbag 8.

[0039] Working principle: When the side thruster 2 is not in use, the hydraulic component 3 can be activated to rotate the sealing cover 4 to seal the inside of the side thrust pipe 1. When the sealing cover 4 is in contact with the end of the side thrust pipe 1, it will drive the sealing ring 6 to approach the connection between the side thrust pipe 1 and the outer wall of the hull, and squeeze the sealing ring 7, causing the sealing ring 7 to compress and deform, filling the gap between the sealing ring 6 and the outer wall of the hull. Then, the external water pump can be started, and the water inside the side thrust pipe 1 can be pumped out through the cooperation of the drain hole 10 and the drain pipe 11 to prevent the growth of organisms and bacteria inside the side thrust pipe 1. As the water flow inside the side thrust pipe 1 decreases rapidly, the air pressure inside the side thrust pipe 1 will decrease accordingly. At this time, the water pressure outside the hull will squeeze the side of the annular airbag 8 away from the side thrust pipe 1, causing the annular airbag 8 to deform towards the side of the hull, so that the annular airbag 8 further fills and seals the inside of the sealing ring 7, realizing multi-stage sealing and further improving the sealing effect inside the side thrust pipe 1.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage sealing bow thrust cap, comprising a thrust pipe (1), characterized in that: The side-push pipe (1) is equipped with a side-push thruster (2) and a hydraulic component (3). A sealing cap (4) is hinged to one end of the hydraulic component (3) away from the inside of the side-push pipe (1). A connecting block (5) is fixedly connected to the outer wall of the sealing cap (4). A sealing ring (6) is fixedly connected to one end of the connecting block (5) away from the sealing cap (4). A sealing rubber ring (7) is detachably connected to one side of the sealing ring (6) near the side-push pipe (1). An annular airbag (8) is fixedly connected between the gap between the sealing cap (4) and the sealing ring (6).

2. The bow-side push-lock cover with multi-stage sealing according to claim 1, characterized in that: An annular filter (9) is fixedly connected to the side of the connecting block (5) away from the side push pipe (1), and the annular airbag (8) is located on the side of the connecting block (5) close to the side push pipe (1).

3. The bow-side push-lock cover with multi-stage sealing according to claim 1, characterized in that: The center of the inner and outer surfaces of the annular airbag (8) is fixedly connected to the outer wall of the sealing cover (4) and the inner wall of the sealing ring (6), respectively.

4. The bow-side push-lock cover with multi-stage sealing according to claim 1, characterized in that: The sealing ring (6) is arranged with an inclined structure on the side surface away from the side push pipe (1).

5. A bow-side push-lock cover with multi-stage sealing according to claim 1, characterized in that: The bottom surface of the side-push pipe (1) is provided with a drain hole (10), and a drain pipe (11) is fixedly connected to the bottom end of the drain hole (10).

6. A multi-stage sealing bow-side push-lock cover according to claim 2, characterized in that: The outer wall of the annular filter (9) fits against the outer wall of the sealing cover (4) and the inner wall of the sealing ring (6).

7. A multi-stage sealing bow-side push-lock cover according to claim 1, characterized in that: The size of the sealing cap (4) is adapted to the size of the side push pipe (1).

8. A multi-stage sealing bow-side push-lock cover according to claim 1, characterized in that: The sealing ring (6) is fitted onto the outside of the sealing cover (4).

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