A pipe for passing through a watertight bulkhead

By designing the pipe structure of the watertight compartment, the problems of easy corrosion and aging and inconvenient maintenance of traditional outboard pipes have been solved, achieving convenient operation and improved pipeline strength, and extending service life.

CN224301520UActive Publication Date: 2026-05-29JIANGSU DAYANG MARINE EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU DAYANG MARINE EQUIP CO LTD
Filing Date
2025-07-07
Publication Date
2026-05-29

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Abstract

The utility model relates to shipbuilding technology technical field discloses a kind of through water-tight cabin's pipe fitting, including valve piece connecting flange end, knee protection sleeve, ship structure, reinforcing knee, cabin-penetrating piece, inner bulkhead and ship outer plate, valve piece connecting flange end is inner field pipe fitting prefabricated and with the one end connection of cabin-penetrating piece, cabin-penetrating piece is according to shipyard standard inner field pipe fitting prefabricated, cabin-penetrating piece penetrates inner bulkhead and water-tight cabin, knee protection sleeve is inner field pipe fitting prefabricated and is set in the outer surface of cabin-penetrating piece, technical effect is through process improvement valve accessory can be set in cabin outside nearby, it is convenient to operate and check maintenance, after pipe plus reinforcing knee protection sleeve, just can be by a tube until outboard, increase pipeline overall strength, prolong pipeline use period, with outboard reinforcing knee protection sleeve protection galvanized layer, knee galvanization is then according to scene situation and add on protection sleeve, reduce modification.
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Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, specifically to a pipe fitting that passes through a watertight compartment. Background Technology

[0002] With increasingly sophisticated modern shipbuilding technology and the growing use of green energy in ships, a new optimized design for ship outboard tubes has emerged to address this need.

[0003] Traditional outboard pipe fitting installation methods include: 1. Two pipe fittings connected by flanges, butt welds, or sleeves, with operating valves located inside the compartment. When passing through ballast tanks, empty tanks, and other side compartments, flanges, valves, bolts, gaskets, sleeves, and butt welds are prone to corrosion and aging, making maintenance inconvenient. 2. Reinforcing elbow plates are fabricated on the pipe in the factory and then galvanized to protect the galvanized layer. However, there may be errors in the fabrication angle. Therefore, we propose a pipe fitting that passes through a watertight compartment. Utility Model Content

[0004] This utility model provides the following technical solution: a pipe fitting through a watertight compartment, including a valve connecting flange end, an elbow plate protective sleeve, a hull structure, a reinforcing elbow plate, a through-hull fitting, an inner bulkhead, and an outer hull plate. The valve connecting flange end is a prefabricated in-house pipe fitting and is connected to one end of the through-hull fitting. The through-hull fitting is prefabricated according to shipyard standards and penetrates the inner bulkhead and the watertight compartment. The elbow plate protective sleeve is a prefabricated in-house pipe fitting and is fitted onto the outer surface of the through-hull fitting. The reinforcing elbow plate is connected to the hull structure and the through-hull fitting through field splicing and welding. The outer hull plate is connected to the hull structure. A margin for field trimming is provided on one side of the outer hull plate at the through-hull location of the pipe fitting.

[0005] Preferably, there are multiple reinforcing elbow plates, which are located at both ends of the elbow plate protective sleeve and at key locations where the pipe connects to the hull structure.

[0006] Preferably, the valve connecting flange end is tightly connected to the cabin penetration component via a flange connection.

[0007] Preferably, the elbow plate protective sleeve is interference-fitted with the through-cabin component.

[0008] Preferably, the reinforcing elbow plate is welded to the hull structure and the through-cabin component.

[0009] Preferably, the inner bulkhead provides positioning and support for the valve connection flange end and the through-cabin component.

[0010] Preferably, the outer surface of the elbow plate protective sleeve is provided with a protective galvanized layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model improves the process so that valve accessories can be installed near the outside of the cabin, facilitating operation, inspection and maintenance. After adding a protective sleeve with a reinforcing elbow plate to the pipe, it can run from a single pipe all the way to the outside, increasing the overall strength of the pipeline and extending its service life. With the protective sleeve protecting the galvanized layer of the reinforcing elbow plate outside the cabin, the elbow plate can be added to the protective sleeve according to the site conditions after galvanizing, reducing the need for modifications. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0014] In the diagram: 1. Valve connection flange end; 2. Elbow plate protective sleeve; 3. Hull structure; 4. Reinforced elbow plate; 5. Through-hull component; 6. Inner bulkhead; 7. Excess material for field trimming; 8. Outer hull plating.

[0015] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0016] 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.

[0017] like Figure 1 As shown, this utility model provides a technical solution: a pipe fitting that passes through a watertight compartment, including a valve connecting flange end 1, an elbow plate protective sleeve 2, a hull structure 3, a reinforcing elbow plate 4, a compartment penetration piece 5, an inner bulkhead 6, and a hull outer plate 8. The valve connecting flange end 1 is a prefabricated in-house pipe fitting and is connected to one end of the compartment penetration piece 5. The compartment penetration piece 5 is prefabricated in-house according to shipyard standards and passes through the inner bulkhead 6 and the watertight compartment. The elbow plate protective sleeve 2 is a prefabricated in-house pipe fitting and is fitted onto the outer surface of the compartment penetration piece 5. The reinforcing elbow plate 4 is connected to the hull structure 3 and the compartment penetration piece 5 through an external splicing and welding method. The hull outer plate 8 is connected to the hull structure 3. A margin for external trimming 7 is provided on one side of the hull outer plate 8 located at the compartment penetration point of the pipe fitting.

[0018] In an optional embodiment, there are multiple reinforcing elbow plates 4, which are located at both ends of the elbow plate protective sleeve 2 and at key locations where the pipe connects to the hull structure 3.

[0019] It should be noted that the multiple settings are intended to distribute stress and enhance connection stability.

[0020] In an optional embodiment: the valve connecting flange end 1 is tightly connected to the through-cabin part 5 via a flange connection.

[0021] It should be noted that this is mainly to achieve a stable connection of the inner cabin pipes.

[0022] In an optional embodiment: the elbow plate protective sleeve 2 is interference-fitted with the through-cabin component 5.

[0023] It should be noted that the interference fit provides protection and structural reinforcement for the 5th hull-through component.

[0024] In an optional embodiment, the reinforcing elbow plate 4 is welded to the hull structure 3 and the through-hull component 5.

[0025] It should be noted that welding can enhance the overall strength of the section penetrating the compartment.

[0026] In an alternative embodiment: the inner bulkhead 6 provides positioning and support for the valve connection flange end 1 and the through-cabin part 5.

[0027] It should be noted that the installation accuracy of the through-cabin fittings must be ensured.

[0028] In an optional embodiment, the outer surface of the elbow plate protective sleeve 2 is provided with a protective galvanized layer.

[0029] It should be noted that the galvanized layer has a certain degree of hardness and wear resistance, which can reduce surface damage caused by friction, collision and other mechanical actions during use and extend its service life.

[0030] In practical use, the working principle of this utility model is as follows:

[0031] The valve connection flange end 1 serves as a prefabricated component for internal piping, connecting to one end of the through-tank component 5 via a flange connection. The through-tank component 5 is prefabricated according to shipyard standards, passing through the inner bulkhead 6 to achieve pipe connectivity between compartments. The elbow plate protective sleeve 2, also a prefabricated component for internal piping, is fitted onto the through-tank component 5, providing protection and enhancing its structural stability. It also forms a tight fit with the through-tank component 5. The elbow plate 4 is reinforced and spliced ​​and welded in the external field, respectively connecting to the hull structure 3 and... The through-hull component 5 is firmly welded to enhance the strength of the connection between the through-hull component 5 and the hull structure 3. The inner bulkhead 6 serves as a compartment partition structure, providing positioning support for the valve connection flange end 1 and the through-hull component 5, so that the valve connection flange end 1 and the through-hull component 5 can be precisely connected at the inner bulkhead 6. The outer plate 8 of the hull is connected to the hull structure 3 to form a complete shell. After the through-hull component 5 passes through the hull structure 3, there is a margin for external field trimming 7 at the outer plate 8 to ensure the sealing and compatibility of the connection between the pipe and the hull structure 3.

[0032] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A pipe fitting through a watertight compartment, comprising a valve connection flange end (1), an elbow plate protective sleeve (2), a hull structure (3), a reinforcing elbow plate (4), a compartment penetration component (5), an inner bulkhead (6), and an outer hull plate (8), characterized in that: The valve connection flange end (1) is a prefabricated internal pipe fitting and is connected to one end of the through-tank fitting (5). The through-tank fitting (5) is prefabricated according to shipyard standards for internal pipe fittings. The through-tank fitting (5) penetrates the inner bulkhead (6) and the watertight compartment. The elbow plate protective sleeve (2) is a prefabricated internal pipe fitting and is fitted onto the outer surface of the through-tank fitting (5). The reinforcing elbow plate (4) is connected to the hull structure (3) and the through-tank fitting (5) by external splicing and welding. The outer plate (8) of the hull is connected to the hull structure (3). The outer plate (8) of the hull located at the through-tank fitting has a margin for external trimming (7) on one side.

2. A pipe fitting passing through a watertight chamber according to claim 1, characterized in that: The number of the reinforcing elbows (4) is multiple, and the multiple reinforcing elbows (4) are located at both ends of the elbow protective sleeve (2) and at the key parts where the pipe is connected to the hull structure (3).

3. A pipe fitting passing through a watertight chamber according to claim 1, characterized in that: The valve connecting flange end (1) is tightly connected to the cabin component (5) through a flange connection.

4. A pipe fitting passing through a watertight chamber according to claim 1, characterized in that: The elbow plate protective sleeve (2) is interference-fitted with the cabin insert (5).

5. A pipe fitting passing through a watertight chamber according to claim 1, characterized in that: The reinforcing elbow plate (4) is welded to the hull structure (3) and the through-hull component (5).

6. A pipe fitting through a watertight chamber according to claim 1, characterized in that: The inner bulkhead (6) provides positioning and support for the valve connection flange end (1) and the through-body component (5).

7. A pipe fitting through a watertight chamber according to claim 1, characterized in that: The outer surface of the elbow plate protective sleeve (2) is provided with a protective galvanized layer.