Exhaust pipe penetration
By introducing a through-hull sleeve, flange assembly, and double insulation layer design into the marine exhaust pipe through-hull fittings, the problem of poor thermal insulation effect in the existing technology is solved, achieving efficient thermal insulation and safe exhaust pipe fixing, and reducing the risk of high temperature burns.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG ZHENHUA HEAVY EQUIP MFG
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-09
AI Technical Summary
The existing marine exhaust pipes have poor thermal insulation properties, leading to a risk of burns from high temperatures.
A marine exhaust pipe through-hull fitting including a through-hull sleeve, flange assembly, and double insulation layer is designed. The exhaust pipe is fixed to the bulkhead or main deck by welding and bolting. An inner insulation layer is set in the annular insulation cavity, and an outer insulation layer is wrapped around it to isolate heat transfer.
It effectively improves the heat insulation effect of the exhaust pipe, reduces the risk of high temperature burns, has high connection strength and high installation accuracy, low cost, and convenient construction of the outer insulation layer.
Smart Images
Figure CN224335824U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ship parts technology, and in particular to a marine exhaust pipe through-cabin component. Background Technology
[0002] Exhaust pipe penetration fittings are mainly used in the exhaust system of the main generator set of offshore oil drilling platforms. The main function of the exhaust system is to smoothly discharge the exhaust gas of the diesel engine outside the ship. When the exhaust pipe passes through the bulkhead, exhaust pipe penetration fittings need to be installed to prevent the heat on the exhaust pipe from being transferred to the bulkhead.
[0003] The Chinese utility model patent application CN202807081U discloses a smoke exhaust pipe through-chamber fitting. The insulating layer of the through-chamber fitting is fitted over the smoke exhaust pipe. Steel plate I passes through the insulating layer and is welded to the smoke exhaust pipe. Steel plate II is welded to a semi-circular steel pipe. The semi-circular steel pipe is welded to a cladding plate. The cladding plate is welded to the bulkhead. A heat insulation gasket is installed between steel plate I and steel plate II and is fixed by bolts, nuts and spring washers.
[0004] The inner end of the steel plate I in the aforementioned smoke exhaust pipe through-cabin component is directly connected to the smoke exhaust pipe. The heat inside the smoke exhaust pipe can be directly conducted to the steel plate I through the smoke exhaust pipe. The outer side of the steel plate I is directly exposed to the outside, and there is still a risk of high temperature burns when personnel pass through it.
[0005] Therefore, this utility model proposes a marine exhaust pipe through-hull component to solve the above problems. Utility Model Content
[0006] The technical problem to be solved by this utility model is to provide a marine exhaust pipe through-chamber component to improve the heat insulation effect of the exhaust pipe.
[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is: a marine exhaust pipe penetration component, installed on the bulkhead or main deck, the innovation of which is: the penetration component includes
[0008] The exhaust pipe has a through-hole on the bulkhead or main deck, and the central axis of the exhaust pipe is vertically set inside the through-hole;
[0009] A hatch-through sleeve is installed inside the hatch-through hole and is fixedly connected to the bulkhead or main deck. The hatch-through sleeve is fitted on the outside of the exhaust pipe and cooperates with the exhaust pipe to form an annular insulating cavity.
[0010] A flange assembly, comprising an upper flange and a lower flange, both of which are fitted onto the outside of the exhaust pipe. The lower flange is positioned above the through-bag sleeve, with its bottom end fixedly connected to the through-bag sleeve. The upper flange is positioned above the lower flange, with its top end fixedly connected to the exhaust pipe. The upper flange and the lower flange are connected by bolts.
[0011] The double insulation layer includes an inner insulation layer and an outer insulation layer. The inner insulation layer is disposed inside the annular insulation cavity, and the outer insulation layer covers the outer walls of the exhaust pipe, the upper flange, the lower flange, and the through-chamber sleeve.
[0012] Furthermore, the top of the upper flange is welded to the exhaust pipe, the bottom of the lower flange is welded to the through-hole sleeve, and the through-hole sleeve is welded to the bulkhead or main deck.
[0013] Furthermore, both the upper and lower flanges are blind flanges, and both the upper and lower flanges have through holes in the middle that match the exhaust pipe.
[0014] Furthermore, the outer insulation layer includes an upper insulation layer and a lower insulation layer, which are respectively disposed on the upper and lower sides of the bulkhead or the main deck.
[0015] The advantages of this utility model are:
[0016] (1) The exhaust pipe of this utility model is fixed to the bulkhead or main deck by using the upper flange, the lower flange and the exhaust sleeve. By setting double insulation layers, the inner insulation layer is set in the annular insulation cavity between the exhaust sleeve and the exhaust pipe to isolate the heat transfer between the exhaust pipe and the bulkhead or main deck. The outer insulation layer is wrapped and covered on the outer wall of the exhaust pipe, the upper flange, the lower flange and the exhaust sleeve to isolate the heat transfer between the entire exhaust pipe exhaust pipe and the outside world, effectively improving the heat insulation effect of the exhaust pipe.
[0017] (2) The fixed connection between the components of the through-cabin part of this utility model is a welded connection, which has high connection strength. In addition, the welding is combined with the bolt connection of the upper and lower flanges to achieve the initial fixing and positioning of the through-cabin sleeve. The welding operation is convenient and the installation accuracy is high.
[0018] (3) Both the upper and lower flanges of this utility model are made of blind flanges, and through holes of corresponding sizes can be opened according to the size requirements of the exhaust pipe, which is convenient to manufacture and low in cost.
[0019] (4) The outer insulation layer of this utility model is divided into upper and lower sections, and the layers are respectively set on the upper and lower sides of the bulkhead or main deck. This design will not affect the connection between the through-bucket and the bulkhead or main deck, and can form a complete cover for the entire exhaust pipe through-bucket component, and facilitate the construction of the outer insulation layer. Attached Figure Description
[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0021] Figure 1 This is a structural schematic diagram of the marine exhaust pipe through-cabin component of this utility model. Detailed Implementation
[0022] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0023] Example
[0024] This embodiment provides a marine exhaust pipe through-chamber fitting, such as... Figure 1 As shown, the through-buoy is installed on the bulkhead or main deck 3 and includes a smoke exhaust pipe 1, a through-buoy sleeve 2, a flange assembly, and a double insulation layer.
[0025] A through-hole is provided on the bulkhead or main deck 3. The central axis of the exhaust pipe 1 is vertically set in the through-hole. The outer diameter of the through-hole sleeve 2 matches the diameter of the through-hole. The through-hole sleeve 2 is set in the through-hole. The outer wall of the through-hole sleeve 2 is welded to the bulkhead or main deck 3. The through-hole sleeve 2 is sleeved on the outside of the exhaust pipe 1 and cooperates with the exhaust pipe 1 to form an annular insulating cavity. An annular sealing plate is connected to the bottom end of the through-hole sleeve 2. The annular sealing plate is sleeved on the outside of the exhaust pipe 1 and covers the bottom opening of the annular insulating cavity.
[0026] The flange assembly includes an upper flange 5 and a lower flange 4. Both upper flange 5 and lower flange 4 are fitted onto the outside of the exhaust pipe 1. Both upper flange 5 and lower flange 4 are blind flanges. Both upper flange 5 and lower flange 4 have through holes in the middle with a diameter matching the outer diameter of the exhaust pipe 1. The exhaust pipe 1 passes through the through holes of upper flange 5 and lower flange 4. The lower flange 4 is positioned above the through-sleeve 2 and covers the top opening of the annular insulating cavity. The bottom end face of the lower flange 4 is welded to the top end face of the through-sleeve 2. The upper flange 5 is positioned above the lower flange 4. The top end face of the upper flange 5 is welded to the outer wall of the exhaust pipe 1. The upper flange 5 and lower flange 4 are connected by bolts.
[0027] The double insulation layer includes an inner insulation layer 6 and an outer insulation layer 7. The inner insulation layer 6 is disposed within an annular insulation cavity, and the outer insulation layer 7 covers the outer walls of the exhaust pipe 1, upper flange 5, lower flange 4, and through-hull sleeve 2. In this embodiment, the inner insulation layer can be made of thermally insulating materials such as expanded perlite or calcium silicate, while the outer insulation layer can be made of thermally insulating materials such as glass wool or ceramic wool. The outer insulation layer 7 includes an upper insulation layer and a lower insulation layer, which are respectively disposed on the upper and lower sides of the bulkhead or main deck 3. This design does not affect the connection between the through-hull sleeve and the bulkhead or main deck, and can form a complete cover for the entire exhaust pipe through-hull component, while also facilitating the construction of the outer insulation layer covering.
[0028] When installing the exhaust pipe through-hull component, first, the upper flange 5, lower flange 4, and through-hull sleeve 2 are sequentially fitted onto the outside of the exhaust pipe 1. The upper flange 5 is welded onto the exhaust pipe 1. After limiting the installation height of the through-hull sleeve 2, the inner insulation layer 6 is filled between the through-hull sleeve 2 and the exhaust pipe 1. After filling, the lower flange 4 is welded onto the through-hull sleeve 2 to seal the annular insulation cavity. Then, the through-hull sleeve 2 and the lower flange 4 are moved up close to the upper flange 5. The lower flange 4 and the upper flange 5 are connected with bolts. After positioning the installation position of the through-hull sleeve 2, the through-hull sleeve 2 is welded to the bulkhead or main deck 3. Finally, the outer insulation layer 7 is wrapped around the outer wall of the through-hull component to complete the installation of the through-hull component. The operation is convenient.
[0029] The smoke exhaust pipe penetration component uses the upper flange 5, lower flange 4, and penetration sleeve 2 to fix the smoke exhaust pipe 1 to the bulkhead or main deck 3. By setting up double insulation layers, the inner insulation layer 6 is set in the annular insulation cavity between the penetration sleeve 2 and the smoke exhaust pipe 1, which isolates the heat transfer between the smoke exhaust pipe 1 and the bulkhead or main deck 3. The outer insulation layer 7 wraps and covers the outer wall of the smoke exhaust pipe 1, upper flange 5, lower flange 4, and penetration sleeve 2, which isolates the heat transfer between the entire smoke exhaust pipe penetration component and the outside world, effectively improving the heat insulation effect of the smoke exhaust pipe.
[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A marine exhaust pipe penetration fitting, installed on the bulkhead or main deck, characterized in that: The hatch-penetrating component includes The exhaust pipe has a through-hole on the bulkhead or main deck, and the central axis of the exhaust pipe is vertically set inside the through-hole; A hatch-through sleeve is installed inside the hatch-through hole and is fixedly connected to the bulkhead or main deck. The hatch-through sleeve is fitted on the outside of the exhaust pipe and cooperates with the exhaust pipe to form an annular insulating cavity. A flange assembly, comprising an upper flange and a lower flange, both of which are fitted onto the outside of the exhaust pipe. The lower flange is positioned above the through-bag sleeve, with its bottom end fixedly connected to the through-bag sleeve. The upper flange is positioned above the lower flange, with its top end fixedly connected to the exhaust pipe. The upper flange and the lower flange are connected by bolts. The double insulation layer includes an inner insulation layer and an outer insulation layer. The inner insulation layer is disposed inside the annular insulation cavity, and the outer insulation layer covers the outer walls of the exhaust pipe, the upper flange, the lower flange, and the through-chamber sleeve.
2. The marine exhaust pipe penetration fitting according to claim 1, characterized in that: The top of the upper flange is welded to the exhaust pipe, the bottom of the lower flange is welded to the through-hole sleeve, and the through-hole sleeve is welded to the bulkhead or main deck.
3. The marine exhaust pipe penetration fitting according to claim 1, characterized in that: Both the upper and lower flanges are blind flanges, and both the upper and lower flanges have through holes in the middle that match the exhaust pipe.
4. The marine exhaust pipe penetration fitting according to claim 1, characterized in that: The outer insulation layer includes an upper insulation layer and a lower insulation layer, which are respectively installed on the upper and lower sides of the bulkhead or main deck.