Flange seat plate for ship and ship

By designing a special connection method between the flange seat plate body and the side pipe and structural bulkhead, the problems of the small diameter of the ship's outer side pipe and the flange being covered by heat insulation were solved, enabling convenient repair and maintenance.

CN120889967APending Publication Date: 2025-11-04SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
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Patent Information

Application Number
CN202511303646.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-12
Publication Date
2025-11-04

AI Technical Summary

Technical Problem

The small diameter of the ship's outer hull pipes makes it difficult to grind, repair, and paint, and the flanges are covered by heat insulation, making inspection and maintenance difficult.

Method used

Design a flange seat plate body with a connecting hole in the middle. The flat surface is connected to the structural bulkhead or side pipe. The flange mating surface is connected to the valve body through the flange. The thickness of the flange seat plate body is greater than the insulation thickness of the bulkhead to avoid the valve body being blocked. The diameter of the outboard pipe is increased by connecting with a side pipe with a larger diameter.

Benefits of technology

It solves the problems of excessively small pipe diameter on the outer side of the vent and flange being covered by heat insulation, making it easy to grind, repair and paint, and facilitating the inspection and maintenance of the valve body.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of ship pipeline connection, in particular to a flange seat plate for a ship and the ship, the flange seat plate for the ship structurally comprises a flange seat plate body, and a communicating hole is formed in the middle of the flange seat plate body; the flat surface is arranged on the first side of the flange seat plate main body and used for being connected with a structural bulkhead of the ship or a broadside pipe of the ship, and the pipe diameter of the broadside pipe is larger than the hole diameter of the communicating hole; the flange combination surface is arranged on the second side of the flange seat plate main body, the flange combination surface is located on the opposite side of the flat surface, and the flange combination surface is connected with a valve body through a flange; and when the flat surface is connected with the structural bulkhead, the thickness of the flange seat plate main body is greater than that of the bulkhead insulation on the structural bulkhead. The flange seat plate for the ship and the ship can solve the problems that the pipe diameter of an outboard discharging pipe on the ship is too small, and a flange is shielded in a heat insulation and insulation mode.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship pipeline connection, in particular to a flange seat plate for a ship. BACKGROUND

[0002] The caliber of the outboard pipe of a ship varies due to system function design. Some outboard pipes have small design caliber because the medium source flow is small. For example, the smallest outboard pipe of a medium and large cargo ship usually has a diameter of 40 mm. In a conventional design, a flange corresponding to the caliber of the outboard pipe is selected. When the caliber of the outboard pipe is small, it is difficult to polish, repair and paint if welding damage occurs inside the welding position of the outboard pipe and the structure plate, which is not conducive to maintaining the coating quality inside the outboard pipe.

[0003] In addition, the pipeline connected to the fuel tank of the ship needs to be provided with an isolation valve on the structure bulkhead. The outside of the structure bulkhead is usually covered with thermal insulation. The use of a conventional flange seat plate will cause the valve body to be covered inside the thermal insulation, resulting in incomplete thermal insulation coverage. After the flange is covered by the thermal insulation, it is difficult to check and maintain. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a flange seat plate for a ship to solve the problems of small caliber of the outboard pipe and flange covered by thermal insulation on the ship.

[0005] According to a first aspect of the present application, a flange seat plate for a ship is provided, wherein the flange seat plate for the ship comprises: a flange seat plate body, a communication hole being arranged in the middle of the flange seat plate body; a flat surface arranged on a first side of the flange seat plate body for connecting with a structure bulkhead of the ship or a side pipe of the ship, the caliber of the side pipe being larger than the caliber of the communication hole; and a flange connecting surface arranged on a second side of the flange seat plate body, the flange connecting surface being located on the opposite side of the flat surface, and the flange connecting surface being connected with a valve body through a flange; when the flat surface is connected with the structure bulkhead, the thickness of the flange seat plate body is greater than the thickness of the bulkhead insulation on the structure bulkhead.

[0006] Preferably, the middle of the second side of the flange seat plate body is formed with an annular protruding portion protruding in the axial direction, and the flange connecting surface is an end surface of the annular protruding portion.

[0007] Preferably, the second side of the flange seat plate body further comprises an annular mounting surface, the mounting surface being arranged around the annular protruding portion, a plurality of screw holes being arranged on the mounting surface, and the flange being mounted on the screw holes through a threaded connecting piece.

[0008] Preferably, the end surface of the flange is in contact with the flange joint surface, the diameter of the flange joint surface is equal to the diameter of the end surface of the flange, and the diameter of the communication hole is equal to the diameter of the valve body.

[0009] Preferably, in the case where the flat surface is connected to the side pipe, the end of the side pipe is welded to the flat surface, the valve body is a side valve, one end of the side valve is connected to the source pipe of the ship, the diameter of the side pipe is greater than the diameter of the source pipe, and the other end of the side valve is connected to the side pipe.

[0010] Preferably, the diameter of the side pipe is ≤125mm.

[0011] Preferably, in the case where the flat surface is connected to the structural bulkhead, a through hole is formed in the structural bulkhead, the diameter of the through hole is smaller than the outer diameter of the flat surface, the diameter of the through hole is greater than the diameter of the communication hole, the flat surface is at least partially attached to the structural bulkhead, the communication hole is welded to the cabin suction pipe of the ship, and the valve body is a bulkhead isolation valve.

[0012] Preferably, the outer peripheral surface of the flange seat plate body in the radial direction is in contact with the bulkhead insulation, the cabin suction pipe passes through the through hole of the structural bulkhead and extends into the communication hole, and the bulkhead isolation valve is connected to the cabin suction pipe through the flange seat plate body.

[0013] Preferably, the thickness of the flange seat plate body is ≥50mm.

[0014] According to a second aspect of the present application, a ship is provided, wherein the ship comprises a flange seat plate for a ship as described above.

[0015] The flange seat plate for a ship and the ship of the embodiments of the present application have the following advantages. The middle part of the flange seat plate body is provided with a communication hole for fluid to pass through. The flat surface is arranged on the first side of the flange seat plate body and is used to connect with the structural bulkhead of the ship or the side pipe of the ship. The flange joint surface is arranged on the second side of the flange seat plate body. The flange joint surface is located on the opposite side of the flat surface and is used to connect with the valve body through the flange. In this way, when the flat surface is connected to the structural bulkhead, since the thickness of the flange seat plate body is greater than the thickness of the bulkhead insulation on the structural bulkhead, the valve body can be prevented from being shielded by the bulkhead insulation. When the pipe diameter of the source pipe of the side discharge pipe is too small, the flange seat plate body can be connected to the side pipe with a larger pipe diameter to increase the pipe diameter of the side discharge pipe, thereby facilitating polishing, repairing and painting. In this way, the problems of the pipe diameter of the side discharge pipe being too small and the flange being shielded by the thermal insulation can be effectively solved.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a flange seat plate for ships according to the present invention.

[0019] Figure 2 This is a schematic diagram of the connection between the flange seat plate and the side tube for ships according to the present invention.

[0020] Figure 3 This is a schematic diagram of a portion of the structure connecting the flange seat plate and the side tube for ships according to the present invention.

[0021] Figure 4 This is a schematic diagram of the connection between the flange seat plate and the structural bulkhead for ships according to the present invention.

[0022] Figure 5 This is a schematic diagram of a portion of the structure connecting the flange seat plate to the structural bulkhead for ships according to the present invention.

[0023] Reference numerals: 1-Flange seat plate body; 101-Connecting hole; 2-Flat surface; 3-Flange mating surface; 30-Annular protrusion; 4-Mounting surface; 40-Screw hole; 5-Flange; 6-Side pipe; 7-Side valve; 8-Structural bulkhead; 9-Bulkhead insulation; 10-Inner suction pipe; 11-Bulkhead isolation valve. Detailed Implementation

[0024] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0025] The features described can be implemented in different ways, and are not to be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided for the purpose of illustrating several ways in which the methods, devices, and / or systems described herein can be implemented.

[0026] Throughout the specification, when an element (such as a layer, region, or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "in contact with" another element, or "covering" another element, it can be directly on, connected, coupled, in contact with, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to," "directly in contact with," or "directly covering" another element, there are no other elements interposed therebetween.

[0027] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.

[0028] Although terms such as "first", "second", and "third" can be used herein to describe various components, assemblies, regions, layers, or sections, these components, assemblies, regions, layers, or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, assembly, region, layer, or section from another component, assembly, region, layer, or section. Thus, a component, assembly, region, layer, or section referred to as the first component, assembly, region, layer, or section in an example described herein can also be referred to as the second component, assembly, region, layer, or section in another example without departing from the teachings of the examples.

[0029] For ease of description, spatial relationship terms, such as "on", "upper", "beneath", and "lower", can be used herein with respect to the position of one element relative to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, a component described as on "upper" or "top" relative to another component would then be oriented on "lower" or "bottom" relative to the other component. Accordingly, the term "on" encompasses both an "on" and "under" orientation in

[0030] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of examples. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including" and "has" or "having" and the like are inclusive of the stated features, numbers, operations, members, elements and / or the like, but do not exclude the presence or addition of one or more other features, numbers, operations, members, elements and / or the like.

[0031] Variations in the shapes illustrated in the drawings can occur as a result of manufacturing processes and / or tolerances. Thus, the examples described herein are not limited to the specific shapes illustrated in the drawings, but include variations in shapes that occur during manufacturing.

[0032] Features of the examples described herein can be combined with one another as would be apparent to one of ordinary skill in the art after understanding the disclosure provided herein. Furthermore, although examples described herein have a variety of configurations, other configurations are possible in which are apparent after understanding the disclosure provided herein.

[0033] As Figures 1 to 5 As shown, a flange seat plate for a ship according to a first aspect of the present application includes a flange seat plate body 1, a flat surface 2, and a flange joint surface 3.

[0034] In the following description, reference will be made to Figures 1 to 5 The specific structure of the above components of the flange seat plate for a ship and the connection relationship of the above components will be described in detail.

[0035] As Figures 1 to 5 As shown, in an embodiment, a middle portion of the flange seat plate body 1 can be provided with a communication hole 101 for passing fluid. The flat surface 2 can be provided on a first side (which can be the left side as shown) of the flange seat plate body 1 for connecting with a structural bulkhead 8 of the ship or a side pipe 6 of the ship. The flange joint surface 3 can be provided on a second side (which can be the right side as shown) of the flange seat plate body 1 for connecting with a flange 4 of the ship. Figure 1 Figure 1 ​The flange joint surface 3 can be located on the opposite side of the flat surface 2. The flange joint surface 3 can be connected with the valve body through the flange 5. In this way, when the flat surface 2 is connected with the structural bulkhead 8, the valve body can be padded by the flange seat plate body 1 due to the thickness of the flange seat plate body 1 being greater than the thickness of the bulkhead insulation 9 on the structural bulkhead 8, thereby avoiding the valve body being shielded by the bulkhead insulation 9. The pipe diameter of the side pipe 6 is greater than the hole diameter of the communication hole 101, and when the pipe diameter of the source pipe of the side discharge pipe is too small (equal to the hole diameter of the communication hole 101), the flange seat plate body 1 can be connected with the side pipe 6 with a larger pipe diameter to increase the pipe diameter of the side discharge pipe, thereby facilitating polishing, repairing and painting. In this way, the situation of the pipe diameter of the side discharge pipe on the ship being too small and the flange 5 being shielded by the thermal insulation is effectively avoided.

[0036] Preferably, as shown in the embodiment, the second side of the flange seat plate body 1 can be provided with a ring-shaped protruding portion 30 protruding in the axial direction. The communication hole 101 is located in the center of the ring-shaped protruding portion 30 and penetrates the flange seat plate body 1. The ring-shaped protruding portion 30 is coaxial with the communication hole 101. The flange joint surface 3 is the end surface of the ring-shaped protruding portion 30, so as to easily abut with the end surface of the flange 5. Figures 1 to 5 Further, preferably, as shown in the embodiment, the second side of the flange seat plate body 1 can further include a ring-shaped mounting surface 4. Specifically, the flange seat plate body 1 can be approximately a cylindrical plate. The mounting surface 4 can be arranged around the ring-shaped protruding portion 30, and the mounting surface 4 and the flange joint surface 3 can be circularly arcuate. A plurality of screw holes 40 can be arranged on the mounting surface 4, and the flange 5 can be mounted on the screw holes 40 through threaded connections (such as screws). Preferably, the plurality of screw holes 40 can be uniformly and circumferentially spaced.

[0037] Figures 1 to 5 Further, preferably, as shown in the embodiment, the second side of the flange seat plate body 1 can further include a ring-shaped mounting surface 4. Specifically, the flange seat plate body 1 can be approximately a cylindrical plate. The mounting surface 4 can be arranged around the ring-shaped protruding portion 30, and the mounting surface 4 and the flange joint surface 3 can be circularly arcuate. A plurality of screw holes 40 can be arranged on the mounting surface 4, and the flange 5 can be mounted on the screw holes 40 through threaded connections (such as screws). Preferably, the plurality of screw holes 40 can be uniformly and circumferentially spaced.

[0038] Further, preferably, as shown in the embodiment, the second side of the flange seat plate body 1 can further include a ring-shaped mounting surface 4. Specifically, the flange seat plate body 1 can be approximately a cylindrical plate. The mounting surface 4 can be arranged around the ring-shaped protruding portion 30, and the mounting surface 4 and the flange joint surface 3 can be circularly arcuate. A plurality of screw holes 40 can be arranged on the mounting surface 4, and the flange 5 can be mounted on the screw holes 40 through threaded connections (such as screws). Preferably, the plurality of screw holes 40 can be uniformly and circumferentially spaced. Figure 2 Figure 4 Further, preferably, as shown in the embodiment, the second side of the flange seat plate body 1 can further include a ring-shaped mounting surface 4. Specifically, the flange seat plate body 1 can be approximately a cylindrical plate. The mounting surface 4 can be arranged around the ring-shaped protruding portion 30, and the mounting surface 4 and the flange joint surface 3 can be circularly arcuate. A plurality of screw holes 40 can be arranged on the mounting surface 4, and the flange 5 can be mounted on the screw holes 40 through threaded connections (such as screws). Preferably, the plurality of screw holes 40 can be uniformly and circumferentially spaced.

[0039] Further, preferably, as shown in the embodiment, the second side of the flange seat plate body 1 can further include a ring-shaped mounting surface 4. Specifically, the flange seat plate body 1 can be approximately a cylindrical plate. The mounting surface 4 can be arranged around the ring-shaped protruding portion 30, and the mounting surface 4 and the flange joint surface 3 can be circularly arcuate. A plurality of screw holes 40 can be arranged on the mounting surface 4, and the flange 5 can be mounted on the screw holes 40 through threaded connections (such as screws). Preferably, the plurality of screw holes 40 can be uniformly and circumferentially spaced. Figures 1 to 3 ​​As shown in the embodiments, in the case where the flat surface 2 is connected with the side pipe 6, the end of the side pipe 6 can be welded with the flat surface 2. Specifically, the outer periphery of the end of the side pipe 6 can be deep penetration welded with the flat surface 2, and then the side pipe 6 is fixed to the second side of the flange base plate body 1. The valve body can be a side valve 7. One end of the side valve 7 can be communicated with the source pipe of the ship (i.e. the source pipe of the overboard pipe). The diameter of the side pipe 6 is larger than that of the source pipe, and the other end of the side valve 7 is communicated with the side pipe 6. In this way, the diameter of the overboard pipe is increased by being communicated with the side pipe 6, and the problem of being difficult to polish, repair and paint due to the too small diameter is avoided.

[0040] Further, preferably, as shown in the embodiments, Figures 1 to 3 As shown in the embodiments, in the case where the flat surface 2 is connected with the side pipe 6, the end of the side pipe 6 can be welded with the flat surface 2. Specifically, the outer periphery of the end of the side pipe 6 can be deep penetration welded with the flat surface 2, and then the side pipe 6 is fixed to the second side of the flange base plate body 1. The valve body can be a side valve 7. One end of the side valve 7 can be communicated with the source pipe of the ship (i.e. the source pipe of the overboard pipe). The diameter of the side pipe 6 is larger than that of the source pipe, and the other end of the side valve 7 is communicated with the side pipe 6. In this way, the diameter of the overboard pipe is increased by being communicated with the side pipe 6, and the problem of being difficult to polish, repair and paint due to the too small diameter is avoided.

[0041] Preferably, as shown in the embodiments, Figure 1 , Figure 4 and Figure 5 As shown in the embodiments, in the case where the flat surface 2 is connected with the structure bulkhead 8, the flat surface 2 is at least partially attached to the structure bulkhead 8. Specifically, a circular through hole can be formed on the structure bulkhead 8, the diameter of the through hole is smaller than the outer diameter of the flange base plate body 1, and the diameter of the through hole is larger than the diameter of the communication hole 101. The flange base plate body 1 can be coaxially arranged with the through hole. The outer periphery of the flange base plate body 1 in the radial direction can be connected with the surface of the structure bulkhead 8 by fillet welding, so that the flat surface 2 is at least partially attached to the structure bulkhead 8, and then the flange base plate body 1 is fixed to the structure bulkhead 8. At the same time, the communication hole 101 can be welded with the cabin suction pipe 10 of the ship. The valve body can be a bulkhead isolation valve 11.

[0042] Further, preferably, as shown in the embodiments, Figure 1 , Figure 4 and Figure 5As shown in the embodiment, the outer circumferential surface (i.e. the circumferential surface) of the flange seat plate body 1 in the radial direction can be in contact with the bulkhead insulation 9. The bulkhead insulation 9 covers the surface of the structural bulkhead 8, and at the position where the flange seat plate body 1 is installed, the structural bulkhead 8 is not provided with the bulkhead insulation 9. Since the thickness of the flange seat plate body 1 is greater than the thickness of the bulkhead insulation 9, the bulkhead insulation 9 is only in contact with the circumferential surface of the flange seat plate body 1, and the bulkhead isolation valve 11 is installed on the second side of the flange seat plate body 1, so that the flange 5 can be prevented from being shielded by the thermal insulation. The cabin suction pipe 10 can pass through the through hole of the structural bulkhead 8 and extend into the communication hole 101. The outer periphery of the cabin suction pipe 10 can be fillet-welded with the flange seat plate body 1, and the end of the cabin suction pipe 10 can be fillet-welded with the inner wall surface of the communication hole 101, thereby fixing the cabin suction pipe 10 to the flange seat plate body 1. The bulkhead isolation valve 11 is communicated with the cabin suction pipe 10 through the flange seat plate body 1.

[0043] Further preferably, as shown in the embodiment, Figure 1 , Figure 4 and Figure 5 , in the embodiment, the thickness of the flange seat plate body 1 is ≥ 50 mm, so as to ensure that the thickness of the flange seat plate body 1 is greater than the thickness of the thermal insulation, and the material is not wasted due to excessive thickness.

[0044] In addition, according to the second aspect of the present application, a ship is provided, which comprises the flange seat plate for ship as described above. A plurality of the flange seat plates for ship can be provided in the ship to be simultaneously installed on the structural bulkhead 8 and the outboard pipe.

[0045] During use, when the flat surface 2 is connected with the structural bulkhead 8, since the thickness of the flange seat plate body 1 is greater than the thickness of the bulkhead insulation 9 on the structural bulkhead 8, the valve body can be raised by the flange seat plate body 1, thereby preventing the valve body from being shielded by the bulkhead insulation 9. When the pipe diameter of the source pipe of the outboard pipe is too small, the flange seat plate body 1 can be communicated with the side pipe 6 with a larger pipe diameter, so as to increase the pipe diameter of the outboard pipe, thereby facilitating polishing, repairing and painting. In this way, the situation that the pipe diameter of the outboard pipe on the ship is too small and the flange 5 is shielded by the thermal insulation can be effectively avoided.

[0046] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any skilled person in the art can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features, within the technical scope disclosed by the present application. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A flange seat plate for ships, installed on ships, characterized in that, The flange seat plate for the ship includes: The flange seat plate body has a connecting hole in the middle. A flat surface, located on the first side of the flange seat plate body, is used to connect with the structural bulkhead of the vessel or the side pipe of the vessel, wherein the diameter of the side pipe is larger than the diameter of the connecting hole; and A flange mating surface is provided on the second side of the flange seat plate body. The flange mating surface is located on the opposite side of the flat surface. The flange mating surface is connected to the valve body through a flange. When the flat surface is connected to the structural bulkhead, the thickness of the flange seat plate body is greater than the thickness of the bulkhead insulation on the structural bulkhead.

2. The flange seat plate for ships according to claim 1, characterized in that, An axially protruding annular protrusion is formed in the middle of the second side of the flange seat plate body, and the flange mating surface is the end face of the annular protrusion.

3. The flange seat plate for ships according to claim 2, characterized in that, The second side of the flange seat plate body also includes an annular mounting surface, which surrounds the annular protrusion. The mounting surface is provided with multiple screw holes, and the flange is installed in the screw holes by a threaded connector.

4. The flange seat plate for ships according to claim 3, characterized in that, The end face of the flange is in contact with the flange mating surface, the diameter of the flange mating surface is equal to the diameter of the end face of the flange, and the diameter of the connecting hole is equal to the diameter of the valve body.

5. The flange seat plate for ships according to claim 1, characterized in that, When the flat surface is connected to the side pipe, the end of the side pipe is welded to the flat surface, the valve body is a side valve, one end of the side valve is connected to the source pipe of the ship, the diameter of the side pipe is larger than the diameter of the source pipe, and the other end of the side valve is connected to the side pipe.

6. The flange seat plate for ships according to claim 5, characterized in that, The diameter of the side tube is ≤125mm.

7. The flange seat plate for ships according to claim 1, characterized in that, When the flat surface is connected to the structural bulkhead, a through hole is formed on the structural bulkhead. The diameter of the through hole is smaller than the outer diameter of the flat surface, and the diameter of the through hole is larger than the diameter of the connecting hole. The flat surface is in contact with the structural bulkhead at least in a partial position. The connecting hole is welded to the ship's internal suction pipe. The valve body is a bulkhead isolation valve.

8. The flange seat plate for ships according to claim 7, characterized in that, The radial outer circumferential surface of the flange seat plate body is in insulating contact with the bulkhead. The internal suction pipe passes through the through hole of the structural bulkhead and extends into the connecting hole. The bulkhead isolation valve is connected to the internal suction pipe through the flange seat plate body.

9. The flange seat plate for ships according to claim 8, characterized in that, The thickness of the flange seat plate body is ≥50mm.

10. A ship, characterized in that, The vessel includes a flange base plate for a vessel as claimed in any one of claims 1 to 9.