Rotatable exhaust pipe structure of transport ship
By using a rotary exhaust pipe structure with threaded connections and clamps for fixation, the problem of adjusting the position of the exhaust pipe during the operation of the transport ship and the loading and unloading of cargo is solved, realizing flexible adjustment and reliable connection of the exhaust pipe, and meeting the actual needs of the transport ship.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 安徽海智装备研究院有限公司
- Filing Date
- 2025-06-30
- Publication Date
- 2026-05-12
AI Technical Summary
The existing deck transport ships have fixed exhaust pipe structures, which can easily obstruct cargo loading and unloading and cannot meet the usage requirements of transport ships.
A rotatable exhaust pipe structure is designed, in which the external exhaust pipe can be screwed onto the internal exhaust pipe via a threaded connection and secured with clamps, allowing for angle adjustment and ensuring the position of the exhaust pipe can be adjusted during driving and loading/unloading cargo.
When the transport ship is in motion, the exhaust pipe extends upward to meet the exhaust requirements, and extends downward to avoid obstructing the loading and unloading of cargo, ensuring the reliability and safety of the connection.
Smart Images
Figure CN224228747U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of exhaust system for transport ships, and more specifically, it relates to a rotatable exhaust pipe structure for transport ships. Background Technology
[0002] Deck transport ships have stringent requirements, including a continuous main deck that does not protrude beyond the loading deck cargo. Currently, the exhaust pipes of the internal combustion engines on deck transport ships are all fixed, either located in the stern engine room where the main engine is an internal combustion engine, in the funnel of the bow engine room where electric propulsion is used, or above the side deckhouse. These locations can easily obstruct cargo loading and therefore do not meet the usage requirements.
[0003] Existing technology includes a technology entitled "Compressed Natural Gas Transport Vessel and its Unloading System and Unloading Control Method," with publication number CN104279422B. This technology provides a compressed natural gas transport vessel, including a hull, multiple unloading systems, and a main exhaust pipe. Each unloading system includes a storage unit, an unloading unit, and a control unit. The unloading unit includes a tank for storing liquid medium, a pump for supplying liquid medium to the storage unit, and a liquid medium connection pipeline including a control valve bridge. A main return control valve and a buffer tank are installed on the return pipe of the liquid medium connection pipeline. A level gauge is installed in the buffer tank. During the return process, the level gauge monitors whether the liquid level in the buffer tank reaches a monitoring point and returns a monitoring signal to the control unit. The control unit controls the opening and closing of the main return control valve according to the monitoring signal, so that liquid remains in the pipeline between the tank and the monitoring point of the buffer tank. This invention also provides an unloading control method. This invention enables long-distance ocean transportation of CNG and can quickly, efficiently, and safely unload compressed natural gas from the hull to a CNG receiving terminal on land.
[0004] However, this technology does not address the technical issues and solutions of this application. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a rotatable exhaust pipe structure for transport ships that is simple in structure, easy to install exhaust pipes when the transport ship is in motion to ensure normal exhaust, and whose position can be easily adjusted when loading and unloading cargo to prevent it from being bumped during loading and unloading, and will not affect the loading and unloading of cargo, thus meeting the actual needs of the transport ship.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] This utility model relates to a rotatable exhaust pipe structure for a transport ship. One end of the internal exhaust pipe is connected to an internal combustion engine, and the other end of the internal exhaust pipe extends to the outside of the stern. The end of the internal exhaust pipe extending to the outside of the stern is provided with a threaded part. The end of the external exhaust pipe connected to the internal exhaust pipe is also provided with a threaded part. The end of the internal exhaust pipe extending to the outside of the stern is screwed together with the threaded part of the external exhaust pipe.
[0008] The internal combustion engine is located in the stern engine room. The end of the exhaust pipe inside the engine room that extends to the outside of the stern is provided with an external thread, and the end of the exhaust pipe outside the engine room that connects to the exhaust pipe inside the engine room is provided with an internal thread.
[0009] The rotatable exhaust pipe structure of the transport ship also includes clamps, which are configured to fix the exhaust pipe inside the cabin and the exhaust pipe outside the cabin.
[0010] The upper part of the internal exhaust pipe and the upper part of the external exhaust pipe are respectively provided with upper protrusions, and the lower part of the internal exhaust pipe and the lower part of the external exhaust pipe are respectively provided with lower protrusions.
[0011] The clamp has an upper recessed portion at the top and a lower recessed portion at the bottom.
[0012] The upper and lower protrusions of the internal exhaust pipe are spaced 180° apart, and the upper and lower protrusions of the external exhaust pipe are also spaced 180° apart.
[0013] The upper and lower recesses of the clamp are spaced 180° apart.
[0014] When the transport ship is in normal operation, the external exhaust pipe is configured to extend upwards, with the upper end of the external exhaust pipe protruding from the surface of the transport ship's deck.
[0015] When loading and unloading cargo, the external exhaust pipe of the transport ship is configured to extend downwards and is located below the deck of the transport ship.
[0016] The working principle and beneficial effects of this utility model are as follows:
[0017] The rotatable exhaust pipe structure for transport ships described in this utility model is constructed as a segmented exhaust pipe, including an external exhaust pipe and an internal exhaust pipe. The external exhaust pipe is adjustable and detachable, while the internal exhaust pipe is fixed. One end of the internal exhaust pipe is connected to the internal combustion engine, and the other end extends to the outside of the stern. The end extending to the outside of the stern is connected to the threaded part of the external exhaust pipe via a threaded portion. Thus, the external and internal exhaust pipes are connected by screwing, and the angle can be adjusted by rotating the external exhaust pipe. When the transport ship needs to operate normally, the external exhaust pipe is configured to extend upwards, i.e., the exhaust port is located at the top, so the upper end of the entire external exhaust pipe protrudes above the transport ship's deck surface, meeting normal exhaust requirements. When the transport ship needs to load or unload cargo, the external exhaust pipe is rotated so that the exhaust port is located at the bottom, so the entire external exhaust pipe is located below the transport ship's deck, i.e., the external exhaust pipe does not protrude above the transport ship's deck. A connecting bridge or step is erected between the transport ship's deck and the dock to facilitate personnel access for loading and unloading cargo. Whether driving normally or loading and unloading cargo, once the external exhaust pipe is adjusted to the correct position, clamps are used to securely connect the internal and external exhaust pipes, ensuring that they will not shift or detach due to vibration, thus ensuring the overall reliability of the exhaust pipe connection. Attached Figure Description
[0018] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:
[0019] Figure 1 This is a schematic diagram of the rotatable exhaust pipe structure for the transport ship described in this utility model.
[0020] Figure 2 This is a schematic diagram of the rotatable exhaust pipe structure for the transport ship described in this utility model.
[0021] Figure 3 This is a schematic diagram of the rotatable exhaust pipe structure for the transport ship described in this utility model.
[0022] Figure 4 This is a schematic diagram of the rotatable exhaust pipe structure for the transport ship described in this utility model.
[0023] Figure 5 This is a schematic diagram of the rotatable exhaust pipe structure for the transport ship described in this utility model.
[0024] The labels in the attached diagram are as follows: 1. External exhaust pipe; 2. Clamp; 3. Internal thread; 4. Internal exhaust pipe; 5. Internal combustion engine; 6. Stern; 7. Stern engine room; 8. Upper protrusion; 9. Lower protrusion; 10. Upper recess; 11. Lower recess; 12. Transport ship deck; 13. Dock; 14. Limiting block; 15. Positioning block. Detailed Implementation
[0025] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:
[0026] As attached Figure 1 -Appendix Figure 5 As shown, this utility model is a rotatable exhaust pipe structure for a transport ship. One end of the internal exhaust pipe 4 is connected to an internal combustion engine 5, and the other end extends to the outside of the stern 6. The end of the internal exhaust pipe 4 extending to the outside of the stern 6 has a threaded portion. An external exhaust pipe 1 connects to the threaded end of the internal exhaust pipe 4. The end of the internal exhaust pipe 4 extending to the outside of the stern 6 is screwed together with the threaded portion of the external exhaust pipe 1. The rotatable exhaust pipe structure for the transport ship also includes a clamp 2, which is configured to securely connect the internal exhaust pipe 4 and the external exhaust pipe 1. This structure addresses the shortcomings of existing technologies by proposing an improved technical solution. During structural design, a segmented exhaust pipe is fabricated, including an external exhaust pipe 1 and an internal exhaust pipe 4. The external exhaust pipe 1 is adjustable and detachable, while the internal exhaust pipe 4 is fixed. One end of the internal exhaust pipe 4 is connected to the internal combustion engine 5, and the other end extends to the outside of the stern 6. The end extending to the outside of the stern 6 is connected to the threaded part of the external exhaust pipe 1 via a threaded part. Thus, the external exhaust pipe 1 and the internal exhaust pipe 4 are connected by screwing, and the angle can be adjusted by rotating the external exhaust pipe 1. When the transport ship needs to operate normally, the external exhaust pipe 1 is configured to extend upwards, i.e., the exhaust port is located at the top, so the upper end of the entire external exhaust pipe 1 protrudes from the surface of the transport ship's deck 12, meeting normal exhaust requirements. When loading and unloading cargo on the transport ship, the external exhaust pipe 1 is rotated so that the exhaust port is located downwards. This positions the entire external exhaust pipe 1 below the transport ship's deck 12, meaning it does not protrude from the deck 12. A connecting bridge or step is erected between the transport ship's deck 12 and the dock 13 to facilitate personnel passage during loading and unloading. Whether during normal navigation or cargo loading / unloading, once the external exhaust pipe 1 is adjusted to its correct position, clamps 2 securely connect the internal exhaust pipe 4 and the external exhaust pipe 1, ensuring that they will not shift or detach due to vibration and guaranteeing the overall reliability of the exhaust pipe connection. The rotatable exhaust pipe structure for transport ships described in this invention is simple in structure, convenient for installation during transport ship navigation to ensure normal exhaust, and allows for easy adjustment of the exhaust pipe's position during cargo loading / unloading to prevent it from being bumped or interfered with, thus meeting the actual needs of the transport ship.
[0027] The internal combustion engine 5 is located inside the stern engine room 7. The end of the internal exhaust pipe 4 extending to the outside of the stern 6 is provided with an external thread, and the end of the external exhaust pipe 1 connected to the internal exhaust pipe 4 is provided with an internal thread 3. This structure allows for easy connection and separation of the two systems through the external thread of the internal exhaust pipe and the internal thread of the external exhaust pipe. Alternatively, the internal exhaust pipe 4 can be configured with an internal thread at the end extending to the outside of the stern 6, and the end of the external exhaust pipe 1 connected to the internal exhaust pipe 4 is provided with an external thread, which also satisfies the connection and separation requirements.
[0028] The upper part of the internal exhaust pipe 4 and the upper part of the external exhaust pipe 1 are respectively provided with upper protrusions 8, and the lower part of the internal exhaust pipe 4 and the lower part of the external exhaust pipe 1 are respectively provided with lower protrusions 9. The upper part of the clamp 2 is provided with an upper recess 10, and the lower part of the clamp 2 is provided with a lower recess 11. With the above structure, regardless of whether the external exhaust pipe extends downward or downward, when the clamp is connected, it is ensured that the upper and lower protrusions of the external exhaust pipe and the internal exhaust pipe are always engaged in the upper and lower recesses of the clamp, respectively. The clamp reliably positions the two exhaust pipe sections and ensures that the structure is fixed after connection.
[0029] The upper protrusion 8 and lower protrusion 9 of the internal exhaust pipe 4 are spaced 180° apart, as are the upper protrusion 8 and lower protrusion 9 of the external exhaust pipe 1. The upper recess 10 and lower recess 11 of the clamp 2 are spaced 180° apart. With this structure, regardless of whether the external exhaust pipe extends downwards or downwards, when the clamp 2 is connected, it ensures that the upper protrusion 8 and lower protrusion 9 of both the external exhaust pipe 1 and the internal exhaust pipe 4 are always respectively engaged within the upper recess 10 and lower recess 11 of the clamp 2. The clamp reliably positions the two exhaust pipe sections, ensuring structural stability after connection.
[0030] The rotatable exhaust pipe structure for transport ships described in this utility model uses a rubber-made limiting block 14. This allows the stern of the transport ship to dock, preventing damage to the stern from hard contact. Furthermore, the limiting block prevents the exhaust pipe from contacting the dock, avoiding collisions. When the stern contacts the dock, the exhaust pipe is positioned between adjacent limiting blocks. The positioning block 15 allows for the use of a clamp to secure the external exhaust pipe and the internal exhaust pipe when the external exhaust pipe extends downwards; the two are only connected by threads. Instead, another clamp secures the external exhaust pipe to the positioning block. When the transport ship needs to proceed normally, the clamp securing the positioning block and the external exhaust pipe is loosened, the external exhaust pipe is rotated, and the other clamp secures the external exhaust pipe to the internal exhaust pipe.
[0031] When the transport ship is operating normally, the external exhaust pipe 1 is configured to extend upwards, with its upper end protruding from the surface of the transport ship's deck 12. With this configuration, the exhaust port of the external exhaust pipe faces upwards and is at a relatively high height, meeting the exhaust requirements of the transport ship.
[0032] When loading and unloading cargo on the transport ship, the external exhaust pipe 1 is configured to extend downwards, and is located below the deck 12 of the transport ship. With this configuration, the exhaust port of the external exhaust pipe faces downwards and is at a relatively low height, meeting the requirements for passage during loading and unloading.
[0033] The rotatable exhaust pipe structure for transport ships described in this utility model is a segmented exhaust pipe, including an external exhaust pipe 1 and an internal exhaust pipe 4. The external exhaust pipe 1 is adjustable and detachable, while the internal exhaust pipe 4 is fixed. One end of the internal exhaust pipe 4 is connected to the internal combustion engine 5, and the other end extends to the outside of the stern 6. The end extending to the outside of the stern 6 is connected to the threaded part of the external exhaust pipe 1 via a threaded part. Thus, the external exhaust pipe 1 and the internal exhaust pipe 4 are connected by screwing. Rotating the external exhaust pipe 1 allows for angle adjustment. When the transport ship needs to operate normally, the external exhaust pipe 1 is configured to extend upwards, i.e., the exhaust port is located at the top, so the upper end of the entire external exhaust pipe 1 protrudes from the surface of the transport ship's deck 12, meeting normal exhaust requirements. When loading and unloading cargo on the transport ship, the external exhaust pipe 1 is rotated so that the exhaust port is located downwards. This positions the entire external exhaust pipe 1 below the transport ship's deck 12, meaning it does not protrude from the deck 12. A connecting bridge or platform is erected between the transport ship's deck 12 and the dock 13 to facilitate personnel passage for loading and unloading. Whether during normal navigation or cargo loading / unloading, once the external exhaust pipe 1 is adjusted to its correct position, clamps 2 securely connect the internal exhaust pipe 4 and the external exhaust pipe 1, ensuring that they will not shift or detach due to vibration and guaranteeing the overall reliability of the exhaust pipe connection.
[0034] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.
Claims
1. A rotatable exhaust pipe structure for a transport ship, characterized in that: One end of the internal exhaust pipe (4) is connected to the internal combustion engine (5), and the other end of the internal exhaust pipe (4) extends to the outside of the stern (6). The end of the internal exhaust pipe (4) extending to the outside of the stern (6) is provided with a threaded part. The external exhaust pipe (1) is connected to the end of the internal exhaust pipe (4) which is provided with a threaded part. The end of the internal exhaust pipe (4) extending to the outside of the stern (6) is screwed together with the threaded part of the external exhaust pipe (1).
2. The rotatable exhaust pipe structure for transport ships according to claim 1, characterized in that: The internal combustion engine (5) is located in the stern engine room (7). The end of the exhaust pipe (4) extending to the outside of the stern (6) is provided with an external thread. The exhaust pipe (1) connecting to the end of the exhaust pipe (4) is provided with an internal thread (3).
3. The rotatable exhaust pipe structure for transport ships according to claim 1, characterized in that: The rotatable exhaust pipe structure of the transport ship also includes a clamp (2), which is configured to fix the exhaust pipe (4) inside the cabin and the exhaust pipe (1) outside the cabin.
4. The rotatable exhaust pipe structure for transport ships according to claim 2 or 3, characterized in that: The upper part of the internal exhaust pipe (4) and the upper part of the external exhaust pipe (1) are respectively provided with upper protrusions (8), and the lower part of the internal exhaust pipe (4) and the lower part of the external exhaust pipe (1) are respectively provided with lower protrusions (9).
5. The rotatable exhaust pipe structure for transport ships according to claim 3, characterized in that: The clamp (2) has an upper recess (10) on the upper part and a lower recess (11) on the lower part.
6. The rotatable exhaust pipe structure for transport ships according to claim 4, characterized in that: The upper protrusion (8) and lower protrusion (9) of the internal exhaust pipe (4) are spaced 180° apart, and the upper protrusion (8) and lower protrusion (9) of the external exhaust pipe (1) are spaced 180° apart.
7. The rotatable exhaust pipe structure for transport ships according to claim 5, characterized in that: The upper recess (10) and lower recess (11) of the clamp (2) are spaced 180° apart.
8. The rotatable exhaust pipe structure for transport ships according to claim 2 or 3, characterized in that: When the transport ship is in normal operation, the external exhaust pipe (1) is configured to extend upward, with the upper end of the external exhaust pipe (1) protruding from the surface of the transport ship deck (12).
9. The rotatable exhaust pipe structure for a transport ship according to claim 2 or 3, characterized in that: When the transport ship loads and unloads cargo, the external exhaust pipe (1) is configured to extend downwards and is located below the deck (12) of the transport ship.