CN218431688U

CN218431688U - Underwater shell, pod propeller and ship

Info

Publication number: CN218431688U
Application number: CN202222725134.2U
Authority: CN
Inventors: 杜鹏; 舒永东; 陈代明; 皮志达; 谢堂海
Original assignee: Nanjing High Accurate Marine Equipment Co Ltd
Current assignee: Nanjing High Accurate Marine Equipment Co Ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-02-03
Anticipated expiration: 2032-10-17

Abstract

The utility model relates to a propeller technical field especially relates to a casing, nacelle propeller and boats and ships under water. The underwater shell comprises a pod shell, a propeller shell, a sealing element and a fastening element, wherein a first hole is formed in the lower end of the pod shell, a groove and a second hole are formed in the upper end of the propeller shell along the circumferential direction of the propeller shell, the sealing element is installed in the groove, and the first hole and the corresponding second hole are coaxially arranged. The fastener is arranged in the first hole and the second hole in a penetrating mode in sequence so as to enable the lower end of the nacelle shell to be detachably connected to the upper end of the propeller shell in a sealing mode. The pod propeller and the ship adopt the underwater shell, and the pod shell and the propeller shell are designed and processed independently, so that the processing difficulty is reduced, and the welding deformation between the pod shell and the propeller shell is avoided. When the pod propeller is overhauled and maintained, only the shell of the propeller needs to be disassembled, so that the maintenance workload of the pod propeller is reduced, the operation is simple and convenient, the maintenance difficulty of the pod propeller is reduced, and the maintenance efficiency is improved.

Description

Underwater shell, pod propeller and ship

Technical Field

The utility model relates to a propeller technical field especially relates to a casing, nacelle propeller and boats and ships under water.

Background

The underwater shell of the pod propeller generally comprises a pod shell and a propeller shell, and core components such as a propulsion motor, a propulsion transmission shaft system and the like in the pod propeller are all placed in the propeller shell. Thus, the safety of the underwater housing is directly related to the reliability of the pod propeller as a whole.

At present, an underwater shell of a pod propeller has the characteristics of large integral volume, heavy weight and the like, the integral length and height of the underwater shell are generally about 6m, and the integral weight is about 30 tons. In order to ensure the sealing performance of the underwater shell, the pod shell and the propeller shell are generally designed into an integral welding forming structure, so strict design and processing requirements are provided for the welding precision, the deformation compensation, the shell integrated machining precision, the field assembly process and the like of the underwater shell, the processing difficulty of the underwater shell is increased, and the welding deformation is easy to occur. Meanwhile, when the nacelle propeller part needs to be overhauled and maintained, the underwater shell needs to be integrally detached, the workload is high, the operation is complex, the maintenance difficulty of the nacelle propeller is increased, and the maintenance efficiency is reduced.

Therefore, there is a need for an underwater housing, pod propulsion and vessel to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a casing, nacelle propeller and boats and ships under water to reduce the processing degree of difficulty of casing under water, avoid the casing welding deformation to appear under water, improve nacelle propeller's maintenance efficiency.

To achieve the purpose, the technical proposal adopted by the utility model is that:

an underwater housing comprising:

the nacelle shell is provided with a first hole at the lower end;

the sealing element is arranged in the groove, and the first hole and the corresponding second hole are coaxially arranged; and

and the fastening piece sequentially penetrates through the first hole and the second hole so as to detachably and hermetically connect the lower end of the pod shell to the upper end of the propeller shell.

Preferably, the propeller housing comprises:

a housing main body; and

the transition shell is communicated with the shell main body, and the groove and the second hole are formed in the upper end face of the transition shell along the circumferential direction of the transition shell.

Preferably, the lower end surface of the transition shell and the shell main body are smoothly welded into a whole.

Preferably, the lower end of the nacelle housing is provided with a plurality of first holes along the circumferential direction thereof, and the second holes are provided in the same number as the first holes and located outside the recess.

Preferably, reinforcing ribs are arranged inside the pod housing and the transition housing.

Preferably, the fastening member is a stainless steel bolt, the second hole is a threaded hole, and the fastening member passing through the first hole is in threaded connection with the second hole.

Preferably, the pod housing comprises a first housing and a second housing which are communicated with each other up and down, the top of the first housing can be arranged on the ship body in a sealing mode, and the bottom of the second housing is communicated with the propeller shell.

Preferably, the first shell is integrally formed by casting, and the second shell is made by welding a plurality of steel plates.

A pod thruster comprising an underwater housing as described above.

A vessel comprising the pod thruster described above.

The beneficial effects of the utility model are that:

the utility model provides a casing under water adopts split type design processing mode, and nacelle casing and propeller shell carry out the design processing alone respectively promptly, have reduced the processing degree of difficulty, have improved machining efficiency. The disassembly and assembly operation of the pod shell and the propeller shell can be realized through the disassembly and assembly of the fastening piece, the disassembly and assembly efficiency of the underwater shell is improved, and the welding deformation between the pod shell and the propeller shell is avoided due to the fact that welding operation is not needed. Meanwhile, the pod shell and the propeller shell are sealed through a sealing element, and the underwater shell is guaranteed to have good sealing performance. In addition, as the core components such as the propulsion motor and the propulsion transmission shaft system of the pod propeller are arranged in the propeller shell, when the pod propeller needs to be overhauled and maintained, only the propeller shell needs to be disassembled, so that the maintenance workload of the pod propeller is reduced, the operation is simple and convenient, the maintenance difficulty of the pod propeller is favorably reduced, and the maintenance efficiency is improved.

The utility model provides a nacelle propeller is through adopting foretell casing under water, and nacelle casing and propeller shell carry out the independent design processing respectively, have reduced the processing degree of difficulty, have avoided appearing welding deformation between nacelle casing and the propeller shell. When the pod propeller is overhauled and maintained, only the shell of the propeller needs to be disassembled, so that the maintenance workload of the pod propeller is reduced, the operation is simple and convenient, the maintenance difficulty of the pod propeller is reduced, and the maintenance efficiency is improved.

The utility model provides a boats and ships are through adopting foretell nacelle propeller, and nacelle casing and propeller shell carry out the design alone respectively and process, have reduced the processing degree of difficulty, have avoided appearing welding deformation between nacelle casing and the propeller shell. When the pod propeller is overhauled and maintained, only the shell of the propeller needs to be disassembled, so that the maintenance workload of the pod propeller is reduced, the operation is simple and convenient, the maintenance difficulty of the pod propeller is reduced, and the maintenance efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of an underwater housing provided in an embodiment of the present invention;

fig. 2 is a schematic view of an assembly structure of an underwater housing provided by an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

fig. 5 is a longitudinal sectional view of an underwater housing provided by an embodiment of the present invention.

The component names and designations in the drawings are as follows:

1. a pod housing; 11. a first housing; 111. a swivel joint; 12. a second housing; 121. a first hole; 2. a propeller housing; 21. a housing main body; 22. a transition housing; 221. a groove; 222. a second hole; 3. a front housing; 4. a rear housing; 5. reinforcing ribs; 6. a fastener.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1, the present embodiment proposes an underwater housing which is part of a pod propeller on a ship. Specifically, the pod thruster includes an underwater housing, a propulsion motor, a propeller, and the like. The underwater shell comprises a pod shell 1 and a propeller shell 2, the top of the pod shell 1 is hermetically arranged on a ship body, the bottom of the pod shell 1 is communicated with the propeller shell 2, and a propeller shaft of a propeller penetrates through the two axial ends of the propeller shell 2 in a sealing mode so that the underwater shell is a watertight shell.

The existing underwater shell has the characteristics of large integral volume, heavy weight and the like, and the pod shell 1 and the propeller shell 2 are formed by welding, so that the processing difficulty of the underwater shell is increased, and welding deformation is easy to occur. When pod propeller parts in the propeller shell 2 need to be overhauled and maintained, the underwater shell needs to be integrally detached, the workload is large, the operation is complex, the maintenance difficulty of the pod propeller is increased, and the maintenance efficiency is reduced.

To solve the above problem, the underwater case further includes a sealing member and a fastening member 6, as shown in fig. 2 to 4. The lower end of the nacelle housing 1 is provided with a first hole 121, the upper end of the propeller housing 2 is provided with a groove 221 and a second hole 222 along the circumferential direction thereof, the sealing member is installed in the groove 221, and the first hole 121 and the corresponding second hole 222 are coaxially arranged. The fasteners 6 are sequentially inserted through the first and

second holes

121, 222 to detachably and sealingly connect the lower end of the nacelle housing 1 to the upper end of the propeller housing 2. The sealing element is an O-shaped sealing ring, so that the sealing effect is good and the installation is convenient.

The underwater shell of the embodiment adopts a split type design and processing mode, namely, the pod shell 1 and the propeller shell 2 are separately designed and processed, so that the processing difficulty is reduced, and the processing efficiency is improved. The disassembly and assembly operation of the pod shell 1 and the propeller shell 2 can be realized through the disassembly and assembly of the fastening piece 6, the disassembly and assembly efficiency of the underwater shell is improved, and welding deformation between the pod shell 1 and the propeller shell 2 is avoided due to the fact that welding operation is not needed. Meanwhile, the pod shell 1 and the propeller shell 2 are sealed through a sealing element, and the underwater shell is guaranteed to have good sealing performance. In addition, as the core components such as the propulsion motor and the propulsion transmission shaft system of the pod propeller are all arranged in the propeller shell 2, when the pod propeller needs to be overhauled and maintained, only the propeller shell 2 needs to be disassembled, so that the maintenance workload of the pod propeller is reduced, the operation is simple and convenient, the maintenance difficulty of the pod propeller is favorably reduced, and the maintenance efficiency is improved.

As shown in fig. 1 and 2, the propeller housing 2 includes a housing main body 21 and a transition case 22, and a shaft of the propeller is sealed at both ends of the housing main body 21 in the axial direction thereof. The transition shell 22 is disposed on the shell main body 21 in a communicating manner, and a groove 221 and a second hole 222 are formed in an upper end surface of the transition shell 22 along a circumferential direction thereof.

Specifically, the lower end face of the transition shell 22 and the shell main body 21 are smoothly welded into a whole, so that the structural strength and the sealing performance of the propeller shell 2 are improved. Meanwhile, the shell main body 21 and the transition shell 22 are welded after being cast separately, so that the processing difficulty of the propeller shell 2 is reduced, and the processing efficiency is improved.

When the fastening member 6 tightly attaches the lower end surface of the nacelle housing 1 to the upper end surface of the transition housing 22, the lower end surface of the nacelle housing 1 can press the sealing member, thereby ensuring a good sealing effect between the lower end surface of the nacelle housing 1 and the upper end surface of the transition housing 22.

As shown in fig. 3 and 4, the lower end of the nacelle housing 1 is opened with a plurality of first holes 121 along the circumferential direction thereof, and second holes 222 are provided in the same number as the first holes 121 and outside the recess 221. Since the plurality of second holes 222 are distributed along the circumferential direction of the transition housing 22 (the extending direction of the groove 221), the connection strength between the lower end surface of the nacelle housing 1 and the upper end surface of the transition housing 22 is improved, and the sealing member can be uniformly pressed, thereby further improving the sealing effect of the sealing member.

The fastening member 6 of the present embodiment is a stainless steel bolt, the second hole 222 is a threaded hole, and the fastening member 6 passing through the first hole 121 is in threaded connection with the second hole 222. The pod shell 1 and the transition shell 22 are mounted together in a bolt connection mode, so that the propeller shell 2 is convenient to assemble and disassemble from the pod shell 1, and the pod propeller parts in the shell main body 21 are convenient to overhaul and maintain. In addition, the fastener 6 is a stainless steel bolt, so that the fastener is cheap and easy to obtain, and has good structural strength and corrosion resistance.

Preferably, as shown in fig. 5, the nacelle housing 1 and the transition housing 22 are internally provided with reinforcing ribs 5. The reinforcing ribs 5 can be steel plates which are transversely, longitudinally and obliquely arranged so as to improve the structural strength of the underwater shell, increase the anti-collision performance and improve the safety of the pod propeller.

It should be noted that, because the top structure of the nacelle housing 1 is complicated, the construction method using steel plate splicing is difficult. Meanwhile, the pod shell 1 has a large overall size, and is difficult to integrally cast and molded, and high in cost. For this purpose, as shown in fig. 5, the nacelle housing 1 includes a first housing 11 and a second housing 12 which are disposed in communication with each other in the up-down direction, the top of the first housing 11 is sealingly disposed on the hull, and the bottom of the second housing 12 is disposed in communication with the propeller housing 2. By adopting the nacelle housing 1 to be processed in a split mode, the processing difficulty of the nacelle housing 1 is reduced, and the assembly efficiency is improved.

Specifically, the first housing 11 is integrally formed by casting, the second housing 12 is formed by welding a plurality of steel plates, and the first housing 11 and the second housing 12 are connected by welding. The first shell 11 with a complex modeling structure is integrally formed by casting, so that the structural strength and the water tightness of the first shell 11 are improved, and the processing efficiency is improved. Meanwhile, the second shell 12 is formed by welding steel plates, so that the water tightness of the second shell 12 is ensured, and the processing cost is reduced.

As shown in fig. 1 and 2, the lower half of the first housing 11 is smoothly connected with the top of the second housing 12, so that the nacelle housing 1 has a smooth outer side surface, the resistance of the nacelle housing 1 is reduced, and the hydrodynamic performance of the underwater housing is improved. The top of the first housing 11 has a swivel joint 111, and the swivel joint 111 can be rotatably connected to a swivel bracket on the hull. Specifically, the pod propeller further comprises a steering mechanism, the steering mechanism comprises a steering motor, a gear box and the like, and the steering motor drives the underwater shell to rotate relative to the slewing support through the gear box so as to achieve flexible adjustment of the thrust direction. Since the steering mechanism is the prior art, the detailed description of the specific structure is omitted.

Further, as shown in fig. 5, the underwater housing further includes a front housing 3 and a rear housing 4, and the nacelle housing 1 is provided with the front housing 3 and the rear housing 4 extending outward along both sides of the propeller housing 2 in the axial direction, respectively. The front shell 3 and the rear shell 4 are respectively arranged on the two sides of the nacelle shell 1 in the front-rear direction, so that the structural strength and the anti-collision capacity of the underwater shell are improved. When the pod propeller is operated underwater, and hard objects such as ice blocks in the water collide with the underwater housing, the front housing 3 and the rear housing 4 can protect the pod housing 1. Even if the front shell 3 and/or the rear shell 4 are damaged by collision, the structural strength and the water tightness of the pod shell 1 are not damaged, and the water tightness and the safety of the underwater shell are improved.

The nacelle shell 1 is welded with the front shell 3 and the rear shell 4 respectively to form a main shell, and the cross section of the main shell is of a symmetrical wing-shaped structure. The structure of the main shell body can reduce the resistance of the underwater shell body, improve the hydrodynamic performance of the underwater shell body, and simultaneously be beneficial to improving the propelling efficiency of the pod propeller.

It should be noted that the front housing 3 and the rear housing 4 are watertight housings, which can prevent seawater from entering the interior of the main housing, thereby preventing seawater from corroding the inner walls of the front housing 3 and the rear housing 4 and part of the outer wall of the pod housing 1, and improving the protection effect on the main housing.

The embodiment also provides the pod propeller, and the pod propeller reduces the processing difficulty of the underwater shell, improves the processing efficiency and avoids welding deformation between the pod shell 1 and the propeller shell 2 by adopting the underwater shell. Meanwhile, the maintenance workload of the pod propeller is reduced, the operation is simple and convenient, the maintenance difficulty of the pod propeller is reduced, and the maintenance efficiency is improved.

The embodiment also provides a ship, and the ship adopts the pod propeller, so that the processing difficulty of the underwater shell is reduced, the processing efficiency is improved, and the welding deformation between the pod shell 1 and the propeller shell 2 is avoided. Meanwhile, the maintenance workload of the pod propeller is reduced, the operation is simple and convenient, the maintenance difficulty of the pod propeller is reduced, and the maintenance efficiency is improved.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An underwater housing, comprising:

the nacelle comprises a nacelle shell (1), wherein a first hole (121) is formed in the lower end of the nacelle shell (1);

the propeller comprises a propeller shell (2) and a sealing element, wherein a groove (221) and a second hole (222) are formed in the upper end of the propeller shell (2) along the circumferential direction of the propeller shell, the sealing element is installed in the groove (221), and the first hole (121) and the corresponding second hole (222) are coaxially arranged; and

and the fastening piece (6) sequentially penetrates through the first hole (121) and the second hole (222) so as to detachably and hermetically connect the lower end of the nacelle shell (1) to the upper end of the propeller shell (2).

2. The underwater case of claim 1, characterized in that the thruster well (2) comprises:

a housing main body (21); and

the transition shell (22) is communicated with the shell main body (21), and the groove (221) and the second hole (222) are formed in the upper end face of the transition shell (22) along the circumferential direction of the transition shell.

3. The underwater case of claim 2, characterised in that the lower end face of the transition case (22) is welded smoothly in one piece with the shell body (21).

4. The underwater case according to claim 2, characterized in that the lower end of the nacelle case (1) is opened with a plurality of the first holes (121) along its circumference, and the second holes (222) are the same number as the first holes (121) and are located outside the groove (221).

5. The underwater case according to claim 2, characterized in that the nacelle case (1) and the transition case (22) are internally provided with stiffening ribs (5).

6. An underwater housing according to any of claims 1-5, characterized in that the fastening member (6) is a stainless steel bolt and the second hole (222) is a threaded hole, the fastening member (6) after passing through the first hole (121) being in threaded connection with the second hole (222).

7. The underwater case according to claim 1, characterized in that the pod case (1) comprises a first case (11) and a second case (12) which are arranged in a vertical communication manner, wherein the top of the first case (11) can be arranged on a ship body in a sealing manner, and the bottom of the second case (12) is provided with the propeller housing (2) in a communication manner.

8. Underwater casing according to claim 7, wherein the first casing (11) is integrally formed by casting and the second casing (12) is made by welding a plurality of steel plates.

9. A pod propeller comprising an underwater housing as claimed in any one of claims 1 to 8.

10. A vessel comprising a pod propeller as claimed in claim 9.