Connecting structure of ship chimney top exhaust pipe and deck
By opening free holes on the top deck of the ship's chimney and using sliding brackets and elastic brackets to limit and support the exhaust pipe, the problem of vibration and structural damage caused by thermal expansion and contraction of the exhaust pipe is solved, extending the service life and Improved work reliability.
Patent Information
- Application Number
- CN202421356087.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The prior art is difficult to effectively solve the vibration and structural damage caused by high-temperature exhaust gas emissions and thermal expansion and contraction of ship exhaust pipes.
Design a connection structure between the exhaust pipe at the top of the ship's chimney and the deck. By opening free holes on the top deck of the chimney, sliding brackets and elastic brackets are used to limit and support the exhaust pipe, so that it can expand during thermal expansion and contraction. It slides freely in the middle and reduces vibration.
It effectively avoids damage or failure of the exhaust pipe due to thermal expansion and contraction, prolongs the service life of the chimney top deck and sliding bracket, while reducing the vibration of the exhaust pipe and improving its working reliability.
Smart Images
Figure CN222373100U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ship chimneys, in particular to a connection structure between an exhaust pipe at the top of a ship chimney and a deck. Background Art
[0002] For ships powered by diesel engines, there is inevitably the problem of exhaust pipe layout and laying. Generally speaking, the layout and laying of exhaust pipes starts from the exhaust outlet of the diesel engine and ends at the top of the ship's chimney. When the diesel engine is running, high-temperature exhaust gas will be continuously discharged from the exhaust outlet. During the process of high-temperature exhaust gas being discharged through the exhaust pipe, the exhaust pipe will heat up and expand through heat conduction; and after the diesel engine stops working, the exhaust pipe will gradually cool down and shrink to normal temperature. In other words, before and after each operation of the diesel engine, the exhaust pipe will experience a process of thermal expansion and contraction.
[0003] During the entire life cycle of the ship, the exhaust pipe will repeatedly experience this process of thermal expansion and contraction. If conventional fixed brackets or structures are used to constrain the exhaust pipe, the fixed brackets or structures are prone to fatigue due to repeated thermal expansion and contraction, leading to damage or failure. Therefore, considering that the exhaust pipe needs to transport high-temperature exhaust gas inside, special consideration and design are required for the fixing form of the exhaust pipe.
[0004] At the same time, since the end of the exhaust pipe is at the top of the open ship chimney, there is no hull structure around it for easy fixation, and the end of the exhaust pipe extends out of the deck at a high height, the vibration of the exhaust pipe is inevitable during the operation of the ship. How to reduce the vibration of the exhaust pipe and extend its service life has become the focus of designers. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a connection structure between the exhaust pipe on the top of a ship chimney and the deck, which can fix the exhaust pipe while avoiding damage or failure due to thermal expansion and contraction of the exhaust pipe.
[0006] The utility model adopts the following technical solutions:
[0007] The utility model provides a connection structure between an exhaust pipe on a chimney top and a deck of a ship, comprising a chimney top deck, an exhaust pipe and a sliding bracket, wherein a free hole is opened on the chimney top deck, one end of the exhaust pipe is connected with a diesel engine below the chimney top deck, the other end of the exhaust pipe vertically passes through the free hole, and an annular spacing space is reserved between the exhaust pipe and the free hole, a plurality of sliding brackets are arranged around the free hole at equal intervals in an annular direction, one end of each sliding bracket is fixed on the top surface of the chimney top deck, and the other end of each sliding bracket is connected with the exhaust pipe limit position at a position higher than the chimney top deck, and the exhaust pipe can slide relative to the sliding bracket in a vertical direction within the limit space.
[0008] Preferably, a water retaining wall is fixed around the free hole on the top surface of the chimney top deck, a cylindrical rain cover is axially passed through the exhaust pipe above the water retaining wall, and the bottom opening of the cylindrical rain cover is covered with the water retaining wall.
[0009] Preferably, the arc-shaped bent pipe section of the exhaust pipe passing through the free hole is beveled from high to low toward the free hole at the end position, and the angle α between the beveled surface of the exhaust pipe and the vertical direction is 10°-30°.
[0010] Preferably, the exhaust pipe is fixed with multiple ear plates at equal intervals in an annular direction at a position higher than the chimney top deck, the mounting end of each sliding bracket is inclined toward an ear plate, and the mounting end of the sliding bracket and the ear plate are provided with strip holes extending in the vertical direction, the threaded connector is passed through the strip hole and connects the sliding bracket to the ear plate, and the rod diameter of the threaded connector is smaller than the hole diameter of the strip hole.
[0011] Preferably, the sliding bracket includes a first double plate and an angle steel, the first double plate is fitted and fixed on the top surface of the chimney top deck, one end of the angle steel is welded and fixed to the first double plate, and the other end of the angle steel is inclined toward an ear plate and connected to the ear plate through a threaded connector.
[0012] Preferably, it also includes an elastic bracket, a plurality of elastic brackets are arranged at equal intervals around the free hole below the chimney top deck, one end of each elastic bracket is fixed to the bottom surface of the chimney top deck, and the other end of each elastic bracket extends obliquely toward the exhaust pipe and is connected to the exhaust pipe.
[0013] Preferably, the elastic bracket includes a first connecting frame, a second connecting frame and an elastic gasket, the first connecting frame is fixed to the bottom surface of the chimney top deck, the second connecting frame is hinged to the exhaust pipe, two elastic gaskets are arranged at intervals on the free end of the second connecting frame, the free end of the first connecting frame is passed through the free end of the second connecting frame and is located in the interval space between the two elastic gaskets, and the free end of the first connecting frame is simultaneously abutted against the two elastic gaskets.
[0014] Preferably, the elastic support further comprises a second doubler plate, the second doubler plate is fitted and fixed on the bottom surface of the chimney top deck, and the first connecting frame is welded and fixed on the second doubler plate.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The connection structure of the exhaust pipe on the top of the ship chimney and the deck of the utility model avoids welding and fixing between the exhaust pipe and the chimney top deck by opening a free hole on the chimney top deck, and because the thermal expansion and contraction deformation of the exhaust pipe mainly occurs in the axial direction and the deformation in the radial direction is very small, the exhaust pipe can undergo thermal expansion and contraction deformation in the vertical direction within the limited space without affecting the chimney top deck and the sliding bracket, thereby extending the service life of the chimney top deck and the sliding bracket; at the same time, by arranging a plurality of sliding brackets at equal intervals in the circumferential direction above the chimney top deck to limit the exhaust pipe, the vibration of the exhaust pipe is reduced, the working reliability of the exhaust pipe is improved, and the service life of the exhaust pipe is extended.
[0017] Obviously, the connection structure between the exhaust pipe on the top of the ship chimney and the deck of the utility model can fix the exhaust pipe while avoiding damage or failure of the exhaust pipe due to thermal expansion and contraction. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is an overall schematic diagram of the connection structure between the exhaust pipe on the top of the ship chimney and the deck in an embodiment of the utility model.
[0019] Figure 2 yes Figure 1 Enlarged schematic diagram of the strip hole location.
[0020] Figure 3 yes Figure 1 Enlarged schematic diagram at the location of the elastic gasket.
[0021] The reference numerals are described as follows:
[0022] 1. Chimney top deck 302, angle steel
[0023] 101, free hole 4, strip hole
[0024] 102. Retaining wall 5. Threaded connector
[0025] 2. Exhaust pipe 6. Elastic bracket
[0026] 201, cylindrical rain cover 601, first connecting frame
[0027] 202, ear plate 602, second connecting frame
[0028] 3. Sliding bracket 603, elastic gasket
[0029] 301, first double plate 604, second double plate DETAILED DESCRIPTION
[0030] The following is a further detailed description of the specific implementations of the present invention in conjunction with the accompanying drawings. These implementations are only used to illustrate the present invention, but not to limit the present invention.
[0031] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] In addition, in the description of the present invention, unless otherwise specified, “plurality” means two or more.
[0034] See also Figure 1 The present embodiment provides a connection structure between the exhaust pipe on the top of a ship chimney and a deck, comprising a chimney top deck 1, an exhaust pipe 2 and a sliding bracket 3. A free hole 101 is opened on the chimney top deck 1. One end of the exhaust pipe 2 is connected to the diesel engine below the chimney top deck 1. The other end of the exhaust pipe 2 vertically passes through the free hole 101, and an annular spacing space is reserved between the exhaust pipe 2 and the free hole 101. A plurality of sliding brackets 3 are arranged around the free hole 101 at equal intervals in an annular direction. One end of each sliding bracket 3 is fixed on the top surface of the chimney top deck 1, and the other end of each sliding bracket 3 is limitedly connected to the exhaust pipe 2 at a position higher than the chimney top deck 1. The exhaust pipe 2 can slide relative to the sliding bracket 3 in the vertical direction within the limited space.
[0035] The connection structure between the exhaust pipe at the top of the ship chimney and the deck of this embodiment avoids welding and fixing between the exhaust pipe 2 and the chimney top deck 1 by opening a free hole 101 on the chimney top deck 1. Since the thermal expansion and contraction deformation of the exhaust pipe 2 mainly occurs in the axial direction and the deformation in the radial direction is very small, the exhaust pipe 2 can expand and contract in the vertical direction within the limited space without affecting the chimney top deck 1 and the sliding bracket 3, thereby extending the service life of the chimney top deck 1 and the sliding bracket 3; at the same time, the exhaust pipe 2 is limited by arranging a plurality of sliding brackets 3 at equal intervals in the circumferential direction above the chimney top deck 1, thereby reducing the vibration of the exhaust pipe 2, improving the working reliability of the exhaust pipe 2, and extending the service life of the exhaust pipe 2.
[0036] Obviously, the connection structure between the exhaust pipe on the top of the ship chimney and the deck of this embodiment can fix the exhaust pipe 2 while avoiding damage or failure of the exhaust pipe 2 due to thermal expansion and contraction.
[0037] Preferably, see Figure 1 A water retaining wall 102 is fixed in an annular direction around the free hole 101 on the top surface of the chimney top deck 1, and a cylindrical rain cover 201 is axially penetrated through the exhaust pipe 2 at the upper position of the water retaining wall 102, and the bottom opening of the cylindrical rain cover 201 is covered with the water retaining wall 102. Since the free hole 101 is opened on the chimney top deck 1, the water retaining wall 102 and the cylindrical rain cover 201 are arranged at the position of the free hole 101 on the top surface of the chimney top deck 1 to form a waterproof device, thereby preventing the possibility of water entering the ship from the free hole 101.
[0038] Preferably, in this embodiment, the water retaining wall 102 is made of flat iron.
[0039] Preferably, see Figure 1 The curved curved pipe section of the exhaust pipe 2 passing through the free hole 101 is beveled from high to low toward the free hole 101 at the end position, and the angle α between the beveled surface of the exhaust pipe 2 and the vertical direction is 10°-30°. Beveling an angle of 10°-30° at the end of the exhaust pipe 2 can prevent rainwater from flowing into the exhaust pipe 2 from the curved curved pipe section to a certain extent, reducing the risk of rainwater infiltrating into the diesel engine under the chimney top deck 1.
[0040] Preferably, see Figure 1 and Figure 2 The exhaust pipe 2 is fixed with a plurality of ear plates 202 at equal intervals in a circumferential direction at a position higher than the chimney top deck 1. The mounting end of each sliding bracket 3 is inclined toward one ear plate 202. The mounting end of the sliding bracket 3 and the ear plate 202 are provided with a strip hole 4 extending in the vertical direction. The threaded connector 5 is penetrated through the strip hole 4 and connects the sliding bracket 3 with the ear plate 202, and the rod diameter of the threaded connector 5 is smaller than the hole diameter of the strip hole 4.
[0041] When the exhaust pipe 2 undergoes thermal expansion and contraction deformation, the strip hole 4 can be used as a reserved space in the axial direction for the thermal expansion and contraction deformation of the exhaust pipe 2. Because the rod diameter of the threaded connector 5 is smaller than the aperture of the strip hole 4, the micro-deformation of the exhaust pipe 2 in the radial direction can also be completed in the gap between the strip hole 4 and the threaded connector 5, thereby preventing the thermal expansion and contraction deformation of the exhaust pipe 2 from affecting the sliding bracket 3 and extending the service life of the sliding bracket 3.
[0042] Preferably, in this embodiment, the threaded connector 5 includes a bolt and a nut, the bolt is inserted into the strip hole 4 and is threadedly connected to the nut; and the strip hole 4 is in the shape of an oblong hole.
[0043] Preferably, see Figure 1 and Figure 2 The sliding bracket 3 includes a first doubler plate 301 and an angle steel 302. The first doubler plate 301 is fixedly attached to the top surface of the chimney top deck 1. One end of the angle steel 302 is welded and fixed to the first doubler plate 301. The other end of the angle steel 302 is tilted toward an ear plate 202 and connected to the ear plate 202 through a threaded connector 5. In order to ensure the connection strength between the angle steel 302 and the chimney top deck 1, it is necessary to fix them by welding. By attaching and fixing the first doubler plate 301 on the top surface of the chimney top deck 1, the first doubler plate 301 can be used to protect the coating on the top surface of the chimney top deck 1 to prevent welding damage.
[0044] Preferably, see Figure 1 The connection structure between the exhaust pipe on the top of the chimney and the deck of the ship in this embodiment also includes an elastic bracket 6. A plurality of elastic brackets 6 are arranged at equal intervals around the free hole 101 below the chimney top deck 1. One end of each elastic bracket 6 is fixed to the bottom surface of the chimney top deck 1, and the other end of each elastic bracket 6 extends obliquely toward the exhaust pipe 2 and is connected to the exhaust pipe 2. The setting of the elastic bracket 6 can strengthen the connection between the exhaust pipe 2 and the chimney top deck 1. At the same time, the elastic bracket 6 can also adapt to the thermal expansion and contraction deformation of the exhaust pipe 2 by relying on its own elastic deformation ability, without being damaged or failing.
[0045] Preferably, see Figure 1 and Figure 3The elastic bracket 6 includes a first connecting bracket 601, a second connecting bracket 602 and an elastic gasket 603. The first connecting bracket 601 is fixed on the bottom surface of the chimney top deck 1. The second connecting bracket 602 is hinged to the exhaust pipe 2. Two elastic gaskets 603 are arranged at intervals on the free end of the second connecting bracket 602. The free end of the first connecting bracket 601 is passed through the free end of the second connecting bracket 602 and is located in the interval space between the two elastic gaskets 603. The free end of the first connecting bracket 601 is simultaneously in contact with the two elastic gaskets 603. The arrangement of the elastic gasket 603 enables the elastic bracket 6 to have elastic deformation ability when subjected to tension or compression, thereby extending the service life of the elastic bracket 6.
[0046] Preferably, see Figure 1 The elastic support 6 also includes a second doubler plate 604, which is fixed to the bottom surface of the chimney top deck 1, and the first connecting frame 601 is welded and fixed to the second doubler plate 604. The second doubler plate 604 can protect the coating on the bottom surface of the chimney top deck 1 and prevent welding damage.
[0047] It should be noted that, in this embodiment, the number of the sliding brackets 3 and the elastic brackets 6 is determined according to the size and weight of the exhaust pipe 2 , and is generally 3 or 4.
[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.
Claims
1. A connection structure between the exhaust pipe at the top of a ship chimney and the deck, characterized in that: The invention comprises a chimney top deck (1), an exhaust pipe (2) and a sliding bracket (3); a free hole (101) is provided on the chimney top deck (1); one end of the exhaust pipe (2) is connected to a diesel engine below the chimney top deck (1); the other end of the exhaust pipe (2) vertically passes through the free hole (101); an annular spacing space is reserved between the exhaust pipe (2) and the free hole (101); a plurality of sliding brackets (3) are arranged at equal intervals in the annular direction around the free hole (101); one end of each sliding bracket (3) is fixed on the top surface of the chimney top deck (1); and the other end of each sliding bracket (3) is limitedly connected to the exhaust pipe (2) at a position higher than the chimney top deck (1); and the exhaust pipe (2) can slide relative to the sliding bracket (3) in the vertical direction within the limited space.
2. The connection structure between the exhaust pipe on the top of a ship chimney and the deck according to claim 1, characterized in that: A water retaining wall (102) is fixed in an annular direction around the free hole (101) on the top surface of the chimney top deck (1); a cylindrical rain cover (201) is axially penetrated through the exhaust pipe (2) above the water retaining wall (102); and the bottom opening of the cylindrical rain cover (201) is covered with the water retaining wall (102).
3. The connection structure between the exhaust pipe on the top of a ship chimney and the deck according to claim 1, characterized in that: The arc-shaped bent pipe section of the exhaust pipe (2) passing through the free hole (101) is beveled from high to low in the direction of the free hole (101) at the end position, and the angle α between the beveled surface of the exhaust pipe (2) and the vertical direction is 10°-30°.
4. The connection structure between the exhaust pipe on the top of a ship chimney and the deck according to claim 1, characterized in that: The exhaust pipe (2) is fixed with a plurality of ear plates (202) at equal intervals in a circular direction at a position higher than the chimney top deck (1); the mounting end of each sliding bracket (3) is arranged to be inclined toward one of the ear plates (202); the mounting end of the sliding bracket (3) and the ear plate (202) are both provided with a strip hole (4) extending in a vertical direction; a threaded connector (5) is inserted into the strip hole (4) and connects the sliding bracket (3) to the ear plate (202); and the rod diameter of the threaded connector (5) is smaller than the hole diameter of the strip hole (4).
5. The connection structure between the exhaust pipe on the top of a ship chimney and the deck according to claim 4, characterized in that: The sliding bracket (3) comprises a first doubler plate (301) and an angle steel (302), wherein the first doubler plate (301) is fixedly attached to the top surface of the chimney top deck (1), one end of the angle steel (302) is welded and fixed to the first doubler plate (301), and the other end of the angle steel (302) is inclined toward one of the ear plates (202) and connected to the ear plate (202) via a threaded connector (5).
6. The connection structure between the exhaust pipe on the top of a ship chimney and the deck according to claim 1, characterized in that: It also comprises an elastic bracket (6), wherein a plurality of the elastic brackets (6) are arranged at equal intervals around the free hole (101) below the chimney top deck (1), one end of each of the elastic brackets (6) is fixed to the bottom surface of the chimney top deck (1), and the other end of each of the elastic brackets (6) extends obliquely toward the exhaust pipe (2) and is connected to the exhaust pipe (2).
7. The connection structure between the exhaust pipe on the top of a ship chimney and the deck according to claim 6, characterized in that: The elastic bracket (6) comprises a first connecting frame (601), a second connecting frame (602) and an elastic gasket (603), wherein the first connecting frame (601) is fixed to the bottom surface of the chimney top deck (1), the second connecting frame (602) is hinged to the exhaust pipe (2), the two elastic gaskets (603) are arranged at intervals on the free end of the second connecting frame (602), the free end of the first connecting frame (601) is passed through the free end of the second connecting frame (602) and is located in the interval space between the two elastic gaskets (603), and the free end of the first connecting frame (601) is simultaneously in contact with the two elastic gaskets (603).
8. The connection structure between the exhaust pipe on the top of a ship chimney and the deck according to claim 7, characterized in that: The elastic support (6) also includes a second doubler plate (604), the second doubler plate (604) is fitted and fixed on the bottom surface of the chimney top deck (1), and the first connecting frame (601) is welded and fixed on the second doubler plate (604).