Ship sealing door, cabin sealing system and installation method and application of ship sealing door and cabin sealing system

Abstract

The invention discloses a ship sealing door, a cabin sealing system and an installation method and application of the cabin sealing system. The ship sealing door comprises a fixing piece, a clamping piece, a first sealing strip, a second sealing strip, a lower doorsill piece, a third sealing strip, a door frame piece and a door plate. The clamping piece comprises a transverse flat plate and a vertical plate, and the vertical plate is connected with the transverse flat plate; the lower doorsill piece comprises an outer vertical doorsill, a transverse doorsill and an inner vertical doorsill, the lower end of the outer vertical doorsill abuts against the top face of the fixing piece or the deck, the upper end is connected with the outer side face of the transverse doorsill, and the inner side face of the transverse doorsill is connected with the lower end of the inner vertical doorsill; the sealing strips are used for sealing the joints of the fixing piece and the clamping piece, the clamping piece and the lower doorsill piece and the lower doorsill piece and the door plate; the lower end of the door frame piece is connected with the doorsill piece. The door plate is hinged to the door frame. The ship sealing door and the doorsill can be conveniently disassembled and assembled, so that replacement and maintenance and access of large equipment are facilitated, the sealing performance before and after disassembly and assembly is good, and the weather tightness requirement of a ship is met.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding, and in particular to a ship's airtight door, a cabin sealing system, its installation method, and its application. Background Technology

[0002] As a core component ensuring the safety and watertightness of a ship, weatherproof doors in ship compartments directly affect the ship's survivability, structural strength, and the airtightness of the compartment environment under harsh sea conditions. According to relevant classification society regulations, all side door openings must meet weatherproof requirements. However, conventional weatherproof doors in the current technology have the following technical drawbacks: Maintenance limitations: Traditional welded fixed sills result in a permanent fixed connection between the door and the hull deck and bulkhead. When the hull structure deforms or the door seals age, local repairs and replacements are not possible. The entire door often needs to be disassembled, which increases maintenance costs and causes losses due to ship downtime. Potential seal failure: The joint between the fixed sill and the deck is made using a continuous welding process, which is susceptible to welding cracks due to long-term exposure to ship vibration and temperature stress, leading to rainwater leakage. Traditional weatherproof door thresholds are fixed structures that cannot be disassembled. During equipment maintenance, the threshold height restricts the entry and exit of large equipment, requiring the threshold to be destructively removed. It is difficult to restore the weatherproof performance during subsequent reinstallation. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a ship's weatherproof door, whose threshold can be easily disassembled and installed, thus facilitating replacement and maintenance. It also exhibits good sealing performance, meeting the weatherproof requirements of ships. Furthermore, the threshold can be easily removed to facilitate the entry and exit of large equipment, and can be easily reinstalled subsequently without affecting the weatherproof performance of the ship's weatherproof door.

[0004] The present invention also proposes a cabin sealing system including the aforementioned ship airtight doors.

[0005] The present invention also proposes an installation method for the above-mentioned ship cabin sealing system.

[0006] The present invention also proposes an application of the above-mentioned ship cabin sealing system.

[0007] According to a first aspect of the present invention, a ship's airtight door is installed on a ship. The ship's airtight door includes: a fastener for fixing the ship's deck; a clamping member including a horizontal plate and a vertical plate, the lower end of the vertical plate being connected to the outer side of the horizontal plate; a first sealing strip, the top surface of the first sealing strip abutting the bottom surface of the horizontal plate, the bottom surface of the first sealing strip being used to abut the top surface of the fastener or the top surface of the deck; the horizontal plate and the fastener are connected by bolts, the horizontal plate being used to clamp and fix the first sealing strip to the fastener or the deck; a second sealing strip, the inner side of the second sealing strip abutting the outer side of the vertical plate; a lower sill member including an outer vertical sill, a horizontal sill, and an inner vertical sill, the lower end of the outer vertical sill being used to abut the top surface of the fastener or the top surface of the deck, the outer side of the second sealing strip abutting the inner side of the outer vertical sill; the vertical plate and the outer vertical sill are connected by bolts, the vertical plate and the... The outer vertical sill clamps and fixes the second sealing strip; the upper end of the outer vertical sill is connected to the outer side of the horizontal sill, and the inner side of the horizontal sill is connected to the lower end of the inner vertical sill; a third sealing strip, the inner side of which abuts against the outer side of the inner vertical sill, and the bottom surface of which abuts against the top surface of the horizontal sill; a door frame, including an upper door frame, a left door frame, and a right door frame, the left side of which is connected to the upper end of the left door frame, and the right side of which is connected to the upper end of the right door frame; at least one of the outer vertical sill, the horizontal sill, and the inner vertical sill is connected to the lower end of the left door frame, and at least one of the outer vertical sill, the horizontal sill, and the inner vertical sill is connected to the lower end of the right door frame; the top surface of the upper door frame, the left side of the left door frame, and the right side of the right door frame are all used to connect to the structural wall of the ship; a door panel, one side of which is hinged to the left door frame or the right door frame, and the outer side of the third sealing strip is used to abut against the lower end of the door panel.

[0008] According to a first aspect of the present invention, a ship's weatherproof door has at least the following technical advantages: the threshold is only welded to the deck with a fixing component, and the rest is connected by bolts, which facilitates the disassembly and assembly of other parts of the threshold, thereby facilitating maintenance and replacement. Even though the fixing component is located above the deck, its height is very low. When large equipment enters or exits, the other parts of the threshold except for the fixing component can be removed to temporarily expand the passage, greatly reducing the height of the threshold and facilitating the entry and exit of large equipment. The threshold can be easily reinstalled later without affecting the weatherproof performance of the ship's weatherproof door. Furthermore, the door is equipped with a first sealing strip, a second sealing strip, and a third sealing strip to meet the sealing requirements of the threshold and the door after closure, thereby satisfying the weatherproof requirements of the ship.

[0009] According to some embodiments of the present invention, the ship's airtight door further includes a fourth sealing strip, the lower end of the fastener is used to fixally connect to the ship's deck, the outer side of the fourth sealing strip abuts against the inner side of the fastener, and the inner side of the fourth sealing strip abuts against the ship's interior deck covering.

[0010] According to some embodiments of the present invention, the ship's airtight door further includes a lower connecting plate and a decorative plate, the upper end of the lower connecting plate being connected to the bottom surface of the cross sill, and the decorative plate and the lower connecting plate being connected by screws.

[0011] According to some embodiments of the present invention, the ship's airtight door further includes thermal insulation cotton, and a lower sill cavity is defined between the top surface of the horizontal plate, the inner side surface of the outer vertical sill, the bottom surface of the horizontal sill, and the outer side surface of the decorative panel, and the thermal insulation cotton fills the lower sill cavity.

[0012] According to some embodiments of the present invention, the lower sill member further includes a lower fixing plate, the inner side of the lower fixing plate is connected to the upper end of the inner vertical sill, the outer side of the lower fixing plate is provided with a downwardly protruding lower limiting protrusion, the top surface of the third sealing strip abuts against the bottom surface of the lower fixing plate, and the lower limiting protrusion is used to abut against the top surface or outer side of the third sealing strip.

[0013] According to some embodiments of the present invention, the ship's airtight door further includes a fifth sealing strip, a side sill member, and a sixth sealing strip. The side sill member includes an inner limiting plate, a side sill plate, and an outer mounting plate. The inner side of the fifth sealing strip abuts against the structural wall, and the outer side of the fifth sealing strip abuts against the inner side of the outer mounting plate. The outer mounting plate is used to connect to the structural wall by bolts, and the outer mounting plate and the structural wall clamp and fix the fifth sealing strip. The end of the outer mounting plate near the door panel is connected to the outer side of the side sill plate, the end of the inner limiting plate away from the door panel is connected to the inner side of the side sill plate, the inner side of the sixth sealing strip abuts against the outer side of the inner limiting plate, and the side of the sixth sealing strip away from the door panel abuts against... The side sill plate is connected to the side of the door panel, and the sixth sealing strip is connected to the side of the door panel to abut against the other side of the door panel; at least one of the outer vertical sill plate, the horizontal sill plate, and the inner vertical sill plate is connected to the lower end of the fifth sealing strip, and the lower end of the left door frame or the lower end of the right door frame is connected to the upper end of the fifth sealing strip; at least one of the outer vertical sill plate, the horizontal sill plate, and the inner vertical sill plate is connected to the lower end of the side sill plate, and the lower end of the left door frame or the lower end of the right door frame is connected to the upper end of the side sill plate; at least one of the outer vertical sill plate, the horizontal sill plate, and the inner vertical sill plate is connected to the lower end of the sixth sealing strip, and the lower end of the left door frame or the lower end of the right door frame is connected to the upper end of the sixth sealing strip.

[0014] According to some embodiments of the present invention, the side sill member further includes a side fixing plate, the inner side of the side fixing plate is connected to the inner side of the inner limiting plate, the outer side of the side fixing plate is provided with a side limiting protrusion protruding in a direction away from the door panel, the side of the sixth sealing strip near the door panel abuts against the side of the side fixing plate away from the door panel, and the side limiting protrusion is used to abut against the inner side of the sixth sealing strip or the side of the sixth sealing strip near the door panel.

[0015] According to a second aspect of the present invention, a ship cabin sealing system includes: the aforementioned ship airtight door; a deck, wherein the fastener is fixedly connected to the deck; a structural wall connected to the deck, wherein the top surface of the upper door frame, the left side surface of the left door frame, and the right side surface of the right door frame are all connected to the structural wall, and the outer surface of the vertical plate and the outer surface of the structural wall are coplanar.

[0016] According to a second aspect of the present invention, a ship cabin sealing system has at least the following technical effects: it is equipped with a ship airtight door, which has good sealing performance and meets the ship's weatherproof requirements; the threshold of the ship airtight door can be disassembled and is simple and convenient to disassemble and assemble, and reinstallation does not affect its sealing performance, which facilitates the replacement and maintenance of the threshold and the entry and exit of large equipment; and the outer side of the vertical plate of the threshold is coplanar with the outer side of the structural wall, thereby reducing the accumulation, concealment and snagging of garbage, facilitating cleaning, and preventing uneven protrusions from obstructing or even injuring personnel on the ship.

[0017] An installation method for a ship compartment sealing system according to a third aspect of the present invention, applied to the aforementioned ship compartment sealing system, includes the following steps: The fasteners are welded to the deck so that the outer surface of the fasteners is coplanar with the outer surface of the structural wall. Place the first sealing strip on the fixing member, and connect the horizontal plate of the clamping member to the fixing member with bolts, so that the horizontal plate and the fixing member clamp and fix the first sealing strip. The second sealing strip is placed on the outside of the vertical plate, and the outer vertical sill of the lower sill piece is connected to the vertical plate with bolts, so that the outer vertical sill and the vertical plate clamp and fix the second sealing strip, and the outer side of the vertical plate and the outer side of the structural wall are coplanar. Install the third sealing strip on the horizontal sill so that the inner side of the third sealing strip abuts against the outer side of the inner vertical sill. Install the door frame components onto the structural wall; Hinge one side of the door panel to the left or right door frame.

[0018] According to a third aspect of the present invention, the installation method of a ship cabin sealing system has at least the following technical effects: the installation of the ship's airtight doors, especially the door sills, is simple and convenient while ensuring that they can be disassembled and installed, and the sealing performance is good after installation, meeting the requirements of the bulkhead for weather tightness. Moreover, during installation, the outer side of the fastener and the outer side of the vertical plate are coplanar with the outer side of the structural wall, which can reduce the accumulation, concealment, and snagging of garbage, facilitate cleaning, and prevent uneven protrusions from obstructing or even injuring personnel on the ship.

[0019] According to an embodiment of the fourth aspect of the present invention, the aforementioned cabin sealing system is applied to a ship.

[0020] The application of a cabin sealing system according to a fourth aspect of the present invention has at least the following technical effects: the sill of the ship's airtight door can be disassembled, which facilitates the entry and exit of large equipment, and the sill components can be replaced and repaired after the hull structure is deformed or the door sealing strip is aged, thereby ensuring its smooth use and meeting the ship's weatherproof requirements. Moreover, after the sill is installed, there are no hidden depressions or protrusions, which reduces the accumulation, hiding and snagging of garbage, and facilitates cleaning and personnel passage.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the overall assembly of a ship compartment sealing system according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure at point AA of the ship's cabin sealing system is shown. Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure at BB of the ship's cabin sealing system is shown. Figure 4 This is a schematic diagram of the overall assembly of the sill portion of the cabin sealing system according to another embodiment of the present invention; Figure 5 for Figure 4 The diagram shows a cross-sectional view of the threshold section CC of the ship's cabin sealing system.

[0023] Figure label: Fastener 100; Clamping component 200, horizontal plate 210, vertical plate 220; First sealing strip 300; First fastening bolt 400; Second sealing strip 500; Lower door sill 600, outer vertical door sill 610, horizontal door sill 620, inner vertical door sill 630, lower fixing plate 640, lower limit protrusion 641; Second fastening bolt 700; Third sealing strip 800; Door frame component 900; Door panel 1000; Fourth sealing strip 1100; Lower connecting plate 1210, decorative panel 1220, side connecting plate 1230, skirting board 1240; 1300mm heat insulation cotton; Fifth sealing strip 1400; Side door sill 1500, inner limit plate 1510, side door sill 1520, outer mounting plate 1530, side fixing plate 1540, side limit protrusion 1541; Third fastening bolt 1600; Sixth sealing strip 1700; Pressure plate 1800; 1900 for the pad; Deck 2010, Interior deck dressing 2020, Structural wall 2030. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that the directional descriptions, such as "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "point," "inner," "outer," "axial," "radial," "circumferential," and "around," are based on the directional or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, sidewalls refer to the left side wall and / or the right side wall.

[0026] In the description of this invention, "a plurality of" means two or more; "greater than," "less than," "exceeding," etc., are understood to exclude the number itself; and "above," "below," "within," etc., are understood to include the number itself. Where "first" or "second" is used, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0027] In the description of this invention, it should be understood that "A is set on B" or "A is set on B" describes the connection or positional relationship between A and B, and does not mean that A is necessarily above B.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, movable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication of two components. "Bolt connection" and "screw connection" can be used interchangeably. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances. It should be understood that multiple similar features in this invention are distinguished only by different prefixes. Therefore, in this invention, feature names without distinguishing prefixes (or feature names with partial prefixes) are used to represent the combination of similar features of this type. For example, "sill member" and "sill" are used to represent the lower sill member 600 and the side sill member 1500, respectively.

[0029] Reference Figures 1 to 5 According to an embodiment of the present invention, a ship airtight door is used for installation on a ship, and the ship airtight door includes: Fastener 100, used for securing the deck 2010 of a vessel; The clamping member 200 includes a horizontal plate 210 and a vertical plate 220, with the lower end of the vertical plate 220 connected to the outer side of the horizontal plate 210. The first sealing strip 300 has its top surface abutting against the bottom surface of the horizontal plate 210, and its bottom surface abutting against the top surface of the fixing member 100 or the top surface of the deck 2010. The horizontal plate 210 and the fixing member 100 are connected by bolts (screws), and the horizontal plate 210 is used to clamp and fix the first sealing strip 300 with the fixing member 100 or the deck 2010. The second sealing strip 500, the inner side of the second sealing strip 500 abuts against the outer side of the vertical plate 220; The lower sill 600 includes an outer vertical sill 610, a horizontal sill 620, and an inner vertical sill 630. The lower end of the outer vertical sill 610 is used to abut against the top surface of the fixing member 100 or the top surface of the deck 2010. The outer side of the second sealing strip 500 abuts against the inner side of the outer vertical sill 610. The vertical plate 220 and the outer vertical sill 610 are connected by bolts, and the vertical plate 220 and the outer vertical sill 610 clamp and fix the second sealing strip 500. The upper end of the outer vertical sill 610 is connected to the outer side of the horizontal sill 620, and the inner side of the horizontal sill 620 is connected to the lower end of the inner vertical sill 630. The third sealing strip 800 has its inner side abutting against the outer side of the inner vertical sill 630, and its bottom surface abutting against the top surface of the horizontal sill 620. The door frame component 900 includes an upper door frame, a left door frame, and a right door frame. The left side of the upper door frame is connected to the upper end of the left door frame, and the right side of the upper door frame is connected to the upper end of the right door frame. At least one of the outer vertical sill 610, the horizontal sill 620, and the inner vertical sill 630 is connected to the lower end of the left door frame, and at least one of the outer vertical sill 610, the horizontal sill 620, and the inner vertical sill 630 is connected to the lower end of the right door frame. The top surface of the upper door frame, the left side of the left door frame, and the right side of the right door frame are all used to connect to the structural wall 2030 of the ship. Door panel 1000, one side of which is hinged to the left or right door frame, and the outer side of the third sealing strip 800 is used to abut the lower end of door panel 1000.

[0030] Ship airtight doors, also known as weatherproof doors on ships, may be simply referred to as doors or weatherproof doors in this invention. The terms "inside" and "outside" are distinguished by the state of the ship airtight door after installation on the ship. The direction facing outwards is considered "outside," and the direction facing inwards is considered "inside." Specifically, in the accompanying drawings of this embodiment, the forward direction is the outward direction, and the backward direction is the inward direction; that is, the front-back direction is the inside-outside direction. Alternatively, the thickness direction of the door after normal closure is considered the inside-outside and front-back directions. Furthermore, the width direction of the door after normal closure is considered the left-right direction, and the up-down direction in its normal placement state is considered the up-down direction (or, the direction of gravity is considered the downward direction). Therefore, the inner side of a component can also be considered the rear side of the component, and the outer side of a component can also be considered the front side of the component.

[0031] The fastener 100 is provided with a first threaded connection hole, which extends vertically (or, in other words, the depth direction of the first threaded connection hole is downward). Specifically, the fastener 100 can be an aluminum alloy fastener 100, which has good deformability and can deform accordingly after the hull structure deforms, maximizing the sealing of its connection with the deck 2010; other components can also be made of aluminum alloy. The structural wall 2030 can specifically be an aluminum alloy structural wall 2030. It should be understood that in some embodiments, the fastener 100 is a long strip, longer than the width of the door panel 1000, extending in the left-right direction, or in other words, its length direction is the left-right direction. In this case, the fastener 100 can be fixedly connected above or below the deck 2010, and multiple first fastening bolts 400 connect the fastener 100 and the clamping member 200. In other embodiments, the fastener 100 is a smaller block. In this case, multiple fasteners 100 are provided, and one first fastening bolt 400 is connected to one fastener 100. Multiple first fastening bolts 400 connect multiple fasteners 100 and one clamping member 200. In this case, the fastener 100 does not have a sealing effect, so the fastener 100 is located below the deck 2010. The fastener 100 is positioned above the deck 2010 to facilitate its installation and removal. However, if the fastener 100 is positioned below the deck 2010, the adverse effects of ship deformation on the sill sealing effect will be reduced. In other words, the first sealing strip 300 and the deck 2010 directly abut against each other, so the deformation of the deck 2010 has little impact on the flexible, deformable, and compressible first sealing strip 300, thus not affecting the sill sealing effect.

[0032] A first connecting through hole is provided on the horizontal plate 210, and a second connecting through hole is provided on the vertical plate 220. The clamping member 200 is approximately L-shaped, so the horizontal plate 210 is approximately horizontal and the vertical plate 220 is approximately vertical. The horizontal plate 210 and the vertical plate 220 are integrally connected (integratedly formed). Specifically, the clamping member 200 can be an angle aluminum. In the specific embodiment of the accompanying drawings, the vertical plate 220 extends in the left-right direction, and the length direction of the vertical plate 220 is the left-right direction. Therefore, the width direction of the vertical plate 220 is the up-down direction, and the thickness direction is the front-back direction. The horizontal plate 210 also extends in the left-right direction, that is, the length direction of the horizontal plate 210 is the left-right direction. Therefore, the width direction of the horizontal plate 210 is the front-back direction, and the thickness direction is the up-down direction. All connecting through holes are provided along the thickness direction of the plates. That is, the first connecting through hole extends vertically through the horizontal plate 210, and the second connecting through hole extends longitudinally through the vertical plate 220. It should be understood that multiple first and second connecting through holes can be provided, extending and spaced apart in the left and right direction. Correspondingly, multiple first fastening bolts 400, second fastening bolts 700, first threaded connecting holes, and second connecting holes can also be provided. 'The horizontal plate 210 and the fixing member 100 are connected by bolts'. Specifically, the ship's airtight door also includes a first fastening bolt 400 (screw). The first fastening bolt 400 (screw) passes through the first connecting through hole (horizontal plate 210) and the first sealing strip 300, and is then threadedly connected to the fixing member 100 (first threaded connecting hole).

[0033] When the fastener 100 is positioned above the deck 2010 (with the lower end of the fastener 100 fixedly connected to the deck 2010), the bottom surface of the first sealing strip 300 abuts against the top surface of the fastener 100, the horizontal plate 210 and the fastener 100 clamp and fix the first sealing strip 300, the lower end of the outer vertical sill 610 abuts against the top surface of the fastener 100, and the inner side of the fastener 100 abuts against the ship's interior deck covering 2020; when the fastener 100 is positioned below the deck 2010 (with the upper end of the fastener 100 fixedly connected to the deck 2010), the bottom surface of the first sealing strip 300 abuts against the top surface of the deck 2010, the horizontal plate 210 clamps and fixes the first sealing strip 300 with the deck 2010, the lower end of the outer vertical sill 610 abuts against the top surface of the deck 2010, and the inner side of the first sealing strip 300 abuts against the ship's interior deck covering 2020.

[0034] According to relevant regulations, such as Article 12 of Annex B to Part 3 of the "Technical Rules for Statutory Inspection of Seagoing Ships on International Voyages" (Amended Protocol B to the 1988 Protocol to the International Load Line Convention of 1966), the threshold of a ship's sealed door needs to have a certain height. Therefore, an external vertical threshold 610 is installed to increase the threshold height to meet the specified requirements. A horizontal threshold 620 is installed so that, when the door is normally closed, the top surface of the horizontal threshold 620 and the bottom surface of the door panel 1000 are opposite each other, roughly isolating and sealing the space inside and outside the door. It is important to understand that there is a certain gap between the top surface of the horizontal threshold 620 and the bottom surface of the door panel 1000 to facilitate the rotation of the door panel 1000. The horizontal threshold 620 also facilitates the connection and installation of the inner vertical threshold 630. The inner vertical threshold 630 serves to limit and fix the third sealing strip 800, bearing the impact force when the door panel 1000 closes, preventing the third sealing strip 800 from moving backward and detaching from the lower threshold piece 600 after being impacted. The lower threshold piece 600 can be a one-piece structure, meaning the connection between the outer vertical threshold 610, the horizontal threshold 620, and the inner vertical threshold 630 is a one-piece connection (molded in one piece); the same applies to the side threshold piece 1500. The vertical plate 220 and the outer vertical sill 610 are connected by bolts. Specifically, the outer vertical sill 610 is provided with a second connecting hole, which extends through the outer vertical sill 610 in the front-to-back direction (the depth direction of the second connecting hole is the front-to-back direction). The ship's airtight door also includes a second fastening bolt 700 and a second fastening nut. The second fastening bolt 700 (screw) passes through the second connecting hole (outer vertical sill 610), the second sealing strip 500, and the second connecting through hole (vertical plate 220) before being threadedly connected to the second fastening nut. It should be understood that the various bolts in this application can be M8 pan head hexagonal socket head cap bolts, with a small protruding bolt head for easy cleaning. They can also be equipped with nylon sleeves, steel threaded sleeves, flat washers, washers 1900, etc., to enhance the sealing performance and fastening effect of the bolt connection. The lower sill plate 600 itself and various other components connected to it, such as the sealing strip, the lower fixing plate 640, and the decorative plate 1220, generally extend in the left-right direction (the left and right ends of some components may bend upwards), or in other words, their length direction is the left-right direction; while the side sill plate 1500 itself and various other components connected to it extend in the up-down direction, or in other words, their length direction is the up-down direction.

[0035] The third sealing strip 800 can be fixed in place by adhesive, screw connection, or concave-convex structure limiting; other similar structures are handled similarly. A sealing strip is also typically provided on the door frame component 900. This sealing strip abuts against the door panel 1000, ensuring a complete seal of the ship's weathertight door after the door panel 1000 is closed, meeting the ship's weathertight requirements. It's important to understand that the joints between the door frame component 900 and the sill components (lower sill component 600, side sill component 1500), the lower sill component 600 and the side sill component 1500 (when both are independent components), and the side sill component 1500 and the deck 2010 can be sealed with adhesive to achieve weathertightness. Specifically, Sica adhesive can be used. The sealing strip, specifically, can be a neoprene rubber sealing strip. The sealing strip deforms under pressure to achieve weathertightness.

[0036] It should be understood that, in the description of this invention, for the ship's airtight door, apart from the door frame 900 and door panel 1000, the remaining components (including the side sill 1500 and other components described below) are basically part of the sill (the decorative panel 1220, the insulation cotton 1300, and part of the baseboard are not part of the sill; only the portion of these components that is separately connected to or cut out of the sill is considered part of the sill). It should be understood that the sides (left and right sides) and ends (top and bottom) of the door panel 1000 generally have built-in sealing structures to facilitate sealing the ship's airtight door after the door panel 1000 abuts against the sealing strip. It should be understood that, in this invention, the descriptions of "top end," "bottom end," etc., for components refer to the end region of the component in the corresponding direction, not absolute geometric endpoints or end faces.

[0037] The ship's airtight door of this invention has a threshold where only the fixing component 100 and the deck 2010 are welded together, while the rest are connected by bolts. This facilitates the disassembly and assembly of other parts of the threshold, making maintenance and replacement convenient. Even if the fixing component 100 is located above the deck (if it is located below the deck, it will not affect the entry and exit of equipment), because the height of the fixing component 100 is very low (specifically, it can be 15mm-30mm), when large equipment enters and exits, the other parts of the threshold except for the fixing component 100 can be removed to temporarily widen the passage and greatly reduce the height of the threshold, facilitating the entry and exit of large equipment. The threshold can then be easily reinstalled without affecting the weathertight performance of the ship's airtight door. Furthermore, the door is equipped with a first sealing strip 300, a second sealing strip 500, and a third sealing strip 800 to ensure the sealing of the threshold and the sealing after the door panel 1000 is closed, thereby meeting the ship's weathertight requirements.

[0038] Reference Figures 1 to 5In some embodiments of the present invention, the ship's airtight door further includes a fourth sealing strip 1100, the lower end of the fastener 100 is used to fix and connect the ship's deck 2010, the outer side of the fourth sealing strip 1100 abuts against the inner side of the fastener 100, and the inner side of the fourth sealing strip 1100 is used to abut against the ship's interior deck covering 2020.

[0039] A fourth sealing strip 1100 is installed to enhance the sealing effect of the ship's airtight doors. Especially during long-term voyages, when the ship is subjected to vibrations and temperature stress, cracks may appear at the welded joints of the fastener 100 above the deck 2010, leading to rainwater leakage. The fourth sealing strip 1100 can block the leaking rainwater, preventing it from entering the interior. The fourth sealing strip 1100 is to some extent restrained and fixed by the fastener 100, the interior deck covering 2020, and the decorative panel 1220 (skirting board 1240). Particularly when the fastener 100 deforms, it compresses the fourth sealing strip 1100, increasing its fixing effect and thus improving the sealing effect even after ship deformation. The interior deck covering 2020 (or interior deck covering layer, interior deck covering component) can specifically be a combination of PVC flooring, self-leveling covering, and ultra-lightweight deck 2010 base covering.

[0040] Reference Figures 1 to 5 In some embodiments of the present invention, the ship's airtight door also includes a lower connecting plate 1210 and a decorative plate 1220. The upper end of the lower connecting plate 1210 is connected to the bottom surface of the cross sill 620, and the decorative plate 1220 and the lower connecting plate 1210 are connected by screws.

[0041] The lower end of the decorative panel 1220 abuts against the fixing piece 100, the fourth sealing strip 1100, or the interior deck covering 2020. Specifically, the decorative panel 1220 can be a detachable aluminum honeycomb decorative panel, and the baseboard can also be detachable, facilitating the installation and removal of the threshold. The decorative panel 1220 serves two purposes: firstly, it blocks the cavities within the threshold (lower threshold cavity, side threshold cavity) to prevent the entry of foreign objects and dust; secondly, it serves a decorative function, ensuring compatibility (or similarity) with the ship's floor covering materials, making the ship's security door and interior more aesthetically pleasing, and facilitating the sale of ship security doors, the ship itself, and ship tickets. The decorative panel 1220 can be made of suitable materials, such as PVC or aluminum composite panels, to suit different interior decoration needs. The connection between the connecting plate and the threshold components can be achieved through screw connections, welding, bolt connections, snap-fit ​​connections, adhesive bonding, or integrated connections.

[0042] The ship's sealed door also includes a kickboard 1240, the inner side of which connects to the outer side of the decorative panel 1220, and the lower end of the kickboard 1240 is used to abut against the interior deck covering 2020. 1240 baseboard (or skirting board) is a specialized term used in interior design. In room design, baseboards, including cornices, wainscoting, and skirting boards, play a role in visual balance. Their linear feel, materials, and colors complement each other in a harmonious way, creating a pleasing aesthetic effect. Another function of 1240 baseboards is protection. As the name suggests, baseboards are the wall area that is easily kicked, making them more susceptible to impact. Using 1240 baseboards helps to ensure a stronger bond between the wall and the floor, reducing wall deformation and preventing damage from external impacts. Additionally, 1240 baseboards are relatively easy to clean; if dirty water splashes while mopping, they are very easy to wipe clean. Besides their protective function, 1240 baseboards also play a significant role in the aesthetics of a home. As the outline of the floor, the eye naturally falls on them. In general, the thickness of 1240 baseboards protruding from the wall is 5-10mm.

[0043] Reference Figures 1 to 5 In some embodiments of the present invention, the ship's airtight door also includes thermal insulation cotton 1300, and a lower sill cavity is defined between the top surface of the horizontal plate 210, the inner side of the outer vertical sill 610, the bottom surface of the horizontal sill 620 and the outer side of the decorative panel 1220, and the thermal insulation cotton 1300 fills the lower sill cavity.

[0044] The installation of 1300mm thermal insulation material ensures that the door sill does not become a source of heat loss, thus facilitating insulation of the ship's interior. The 1300mm thermal insulation material is made of insulating material; for details on specific insulating materials, please refer to existing technical specifications, which will not be elaborated upon here.

[0045] To remove the lower sill piece 600 and its related components, first disconnect the decorative panel 1220 from the lower connecting plate 1210, remove the decorative panel 1220, then remove the heat insulation cotton 1300, and then unscrew the first fastening bolt 400 and the second fastening bolt 700. Remove the lower sill piece 600, the clamping piece 200, the first sealing strip 300, and the second sealing strip 500 to complete the removal of the lower sill. Installation is the reverse process.

[0046] Reference Figures 1 to 5 In some embodiments of the present invention, the lower sill member 600 further includes a lower fixing plate 640, the inner side of the lower fixing plate 640 is connected to the upper end of the inner vertical sill 630, the outer side of the lower fixing plate 640 is provided with a downwardly protruding lower limit protrusion 641, the top surface of the third sealing strip 800 abuts against the bottom surface of the lower fixing plate 640, and the lower limit protrusion 641 is used to abut against the top surface or outer side of the third sealing strip 800.

[0047] At least a portion of the third sealing strip 800 is limited and fixed between the lower limit protrusion 641 and the inner vertical threshold 630, thereby limiting and fixing the third sealing strip 800 to a certain extent and preventing it from detaching from the threshold.

[0048] Reference Figures 1 to 5 In some embodiments of the present invention, the ship's airtight door further includes a fifth sealing strip 1400, a side sill plate 1500, and a sixth sealing strip 1700. The side sill plate 1500 includes an inner limiting plate 1510, a side sill plate 1520, and an outer mounting plate 1530. The inner side of the fifth sealing strip 1400 abuts against the structural wall 2030, and the outer side of the fifth sealing strip 1400 abuts against the inner side of the outer mounting plate 1530. The outer mounting plate 1530 is used to connect with the structural wall 2030 by bolts, and the outer mounting plate 1530 and the structural wall 2030 are clamped together. The fifth sealing strip 1400 is fixed; the end of the outer mounting plate 1530 near the door panel 1000 is connected to the outer side of the side sill plate 1520, the end of the inner limiting plate 1510 away from the door panel 1000 is connected to the inner side of the side sill plate 1520, the inner side of the sixth sealing strip 1700 abuts against the outer side of the inner limiting plate 1510, and the side of the sixth sealing strip 1700 away from the door panel 1000 abuts against the side of the side sill plate 1520 near the door panel 1000 (i.e., the aforementioned components located on the right side of the ship's airtight door, the right side of its sixth sealing strip 1700 abuts against the side...). The left side of the sill plate 1520; the aforementioned component located on the left side of the ship's sealed door, wherein the left side of its sixth sealing strip 1700 abuts against the right side of the side sill plate 1520, and the side of the sixth sealing strip 1700 near the door panel 1000 abuts against the other side of the door panel 1000; at least one of the outer vertical sill plate 610, the horizontal sill plate 620, and the inner vertical sill plate 630 is connected to the lower end of the fifth sealing strip 1400, and the lower end of the left door frame or the lower end of the right door frame is connected to the upper end of the fifth sealing strip 1400; the outer vertical sill plate 610, the horizontal sill plate 620, and the inner vertical sill plate 630 At least one of the following 630 is connected to the lower end of the side sill piece 1500 (all of the inner limit plate 1510, side sill plate 1520 and outer mounting plate 1530), and the lower end of the left door frame or the lower end of the right door frame is connected to the upper end of the side sill piece 1500 (all of the inner limit plate 1510, side sill plate 1520 and outer mounting plate 1530); at least one of the outer vertical sill 610, horizontal sill 620 and inner vertical sill 630 is connected to the lower end of the sixth sealing strip 1700, and the lower end of the left door frame or the lower end of the right door frame is connected to the upper end of the sixth sealing strip 1700.

[0049] The fifth sealing strip 1400 and the sixth sealing strip 1700 are provided to facilitate sealing at the connection and abutment of the opposite sill piece 1500, door panel 1000, and structural wall 2030. The outer mounting plate 1530 is used to connect to the structural wall 2030 via bolts. Specifically, the outer mounting plate 1530 has a third connecting through hole extending through it in the front-to-back direction, and the structural wall 2030 has a fourth connecting through hole extending through it in the front-to-back direction. The ship's airtight door also includes a third fastening bolt 1600 and a third fastening nut. The third fastening bolt 1600 (screw) passes through the third connecting through hole (outer mounting plate 1530), the fifth sealing strip 1400, and the fourth connecting through hole (structural wall 2030) before being threadedly connected to the third fastening nut. It should be understood that the descriptions of 'near' and 'far from' in this invention do not refer to specific distances, but rather to orientation. That is, one side of the component (the left and right sides of the component in the attached drawings) is closer to the door panel 1000, and the other side is farther from the door panel 1000. Specifically, for the component located on the right side of the ship's sealed door, its left side is closer to the door panel 1000, and its right side is farther from the door panel 1000. For the component located on the left side of the ship's sealed door, its right side is closer to the door panel 1000, and its left side is farther from the door panel 1000.

[0050] It should be understood that in some embodiments, the lower sill piece 600 and the side sill piece 1500 are two independent components. Therefore, the side sill piece 1500 is provided to facilitate the installation and removal of the sill. In particular, after the hull structure deforms, the lower sill piece 600 can easily be completely jammed and locked by the door frame piece 900, making it difficult to remove even after loosening the bolts. However, the side sill piece 1500 can be removed when the hull structure deforms and jams the lower sill piece 600, freeing up space for the removal of the lower sill piece 600, thus allowing the lower sill piece 600 and the door frame piece 900 to be installed together. No longer in contact, it will not be stuck or jammed; and even if the side sill piece 1500 is completely stuck or jammed by the door frame piece 900, the overall length of the side sill piece 1500 is relatively short (the length of the lower sill piece 600 must be greater than the width of the door panel 1000, so its length is relatively long; while the length of the side sill piece 1500 can be freely set, and is generally set to be smaller, for example, its maximum length can be set to not exceed 200mm), and the connection and sealing with the structural wall 2030 is relatively simple, so the sealing performance of the ship's airtight door after the sill is reinstalled can be guaranteed to the greatest extent.

[0051] In other embodiments, the lower sill 600 and the side sill 1500 can be an integral structure (integrated molding and integral connection), that is, the lower sill 600 is an integral structure (the outer vertical sill 610, the horizontal sill 620, and the inner vertical sill 630 are integrally molded and integrally connected), and the side sill 1500 is an integral structure (the inner limiting plate 1510, the side sill plate 1520, and the outer mounting plate 1530 are integrally molded and integrally connected). Furthermore, the inner limiting plate 1510 and the inner vertical sill 630 are integrally connected, the side sill plate 1520 and the horizontal sill 620 are integrally connected, and the outer mounting plate 1530 and the outer vertical sill 610 are integrally connected. Specifically, the inner limiting plate 1510 and the side sill plate 1520... The lower ends of both are inclined downwards (downwards to the left or right), while the left and right ends of the horizontal sill 620 and the inner vertical sill 630 are inclined upwards (upwards to the left or right). The lower end of the inner limiting plate 1510 is integrally connected to the left or right end of the inner vertical sill 630, the lower end of the side sill plate 1520 is integrally connected to the left or right end of the horizontal sill 620, and the lower end of the outer mounting plate 1530 is integrally connected to the left or right end of the outer vertical sill 610. Furthermore, the third sealing strip 800 and the sixth sealing strip 1700 can also be integrally connected, and the lower end of the fifth sealing strip 1400 abuts against the deck 2010, the fastener 100, the first sealing strip 300, or the second sealing strip 500.

[0052] In other embodiments, the outer vertical sill 610 and the outer mounting plate 1530 are integrally formed (the whole is the outer sill plate). Other components of the lower sill piece 600 and the side sill piece 1500 can be integrally formed and then welded to the outer sill plate. For example, the horizontal sill 620 and the side sill plate 1520 are integrally formed and then welded to the outer sill plate. The inner vertical sill 630 and the inner limiting plate 1510 are integrally formed and then welded to the horizontal sill 620 and the side sill plate 1520. Or, for example, the horizontal sill 620, the side sill plate 1520, the inner vertical sill 630, and the inner limiting plate 1510 are integrally formed and then welded to the outer sill plate.

[0053] Reference Figures 1 to 5 In some embodiments of the present invention, the side sill member 1500 further includes a side fixing plate 1540, the inner side of the side fixing plate 1540 is connected to the inner side of the inner limiting plate 1510, and the outer side of the side fixing plate 1540 is provided with a side limiting protrusion 1541 protruding in a direction away from the door panel 1000. The side of the sixth sealing strip 1700 near the door panel 1000 abuts against the side of the side fixing plate 1540 away from the door panel 1000, and the side limiting protrusion 1541 is used to abut against the inner side of the sixth sealing strip 1700 or the side of the sixth sealing strip 1700 near the door panel 1000.

[0054] At least a portion of the sixth sealing strip 1700 is limited and fixed between the side limiting protrusion 1541 and the side sill plate 1520, thereby limiting and fixing the sixth sealing strip 1700 to a certain extent and preventing it from detaching from the sill.

[0055] The ship's airtight door also includes a side connecting plate 1230 and a decorative plate 1220. The end of the side connecting plate 1230 near the door panel 1000 is connected to the side of the side sill plate 1520 away from the door panel 1000. The decorative plate 1220 and the side connecting plate 1230 are connected by screws. Therefore, the decorative plate 1220 can be connected and fixed to the side connecting plate 1230 and the lower connecting plate 1210 by screws, thereby fixing the decorative plate 1220 and the ship's airtight door together.

[0056] The ship's airtight door also includes thermal insulation 1300. A side sill cavity is defined between the inner side of the outer mounting plate 1530 (fifth sealing strip 1400, structural wall 2030), the side sill plate 1520 away from the door panel 1000, and the outer side of the decorative panel 1220. The thermal insulation 1300 fills the side sill cavity. The arrangement of the side connecting plate 1230, decorative panel 1220, and thermal insulation 1300 can be referred to the above-mentioned related content.

[0057] The ship's airtight door also includes a pressure plate 1800 and a pad 1900. One side of the pressure plate 1800 abuts against the outer side of the outer mounting plate 1530, the side of the side sill plate 1520 near the door panel 1000, and the outer side of the outer mounting plate 1530. The other side of the pressure plate 1800 abuts against the pad 1900.

[0058] The pressure plate 1800 and the pad 1900 are provided. The pad 1900, like the sealing strip, is made of flexible material. On the one hand, it can enhance the sealing performance near the through hole of the side sill piece 1500 after it is connected to other parts by bolts, and the tightness of the bolt connection. On the other hand, it can buffer the impact force of the door panel 1000 on the sixth sealing strip 1700. The pressure plate 1800 can protect the pad 1900 and ensure that the pad 1900 is flat and fits tightly against other parts to ensure its sealing performance.

[0059] Reference Figures 1 to 5 According to an embodiment of the present invention, a ship's cabin sealing system includes: The aforementioned ship's sealed doors; Deck 2010, the lower end of fastener 100 is fixedly connected to the deck 2010 of the ship; The structural wall 2030, the connecting deck 2010, the top surface of the upper door frame, the left side of the left door frame and the right side of the right door frame are all connected to the structural wall 2030, and the outer side of the fastener 100 and the outer side of the vertical plate 220 are coplanar with the outer side of the structural wall 2030.

[0060] The cabin sealing system may also include an interior deck covering 2020, which is disposed on the deck 2010, with the inner side of the fastener 100 (fourth sealing strip 1100) abutting against the interior deck covering 2020.

[0061] The ship cabin sealing system of the present invention is equipped with a ship airtight door, which has good sealing performance and meets the requirements of weathertightness of ships. The threshold of the ship airtight door can be disassembled and is simple and convenient to disassemble and assemble. Reinstallation does not affect its sealing performance, which facilitates the replacement and maintenance of the threshold and the entry and exit of large equipment. The outer side of the threshold (the outer side of the fixing member 100 set above the deck 2010 and the outer side of the vertical plate 220) and the outer side of the structural wall 2030 are coplanar, thereby reducing the accumulation, hiding and snagging of garbage, facilitating cleaning, and preventing uneven protrusions from obstructing or even injuring personnel on the ship.

[0062] Reference Figures 1 to 5 The installation method of the ship compartment sealing system according to an embodiment of the present invention, applied to the aforementioned ship compartment sealing system, includes the following steps: The fastener 100 is welded to the deck 2010 such that the outer side of the fastener 100 is coplanar with the outer side of the structural wall 2030, and the inner side of the fastener 100 is used to abut against the interior deck covering 2020. The first sealing strip 300 is placed on the fixing member 100, and the horizontal plate 210 of the clamping member 200 is connected to the fixing member 100 by bolts, so that the horizontal plate 210 and the fixing member 100 clamp and fix the first sealing strip 300. The second sealing strip 500 is placed on the outside of the vertical plate 220, and the outer vertical sill 610 of the lower sill piece 600 is connected to the vertical plate 220 by bolts, so that the outer vertical sill 610 and the vertical plate 220 clamp and fix the second sealing strip 500, and make the outer side of the vertical plate 220 and the outer side of the structural wall 2030 coplanar. Install the third sealing strip 800 on the horizontal sill 620, so that the inner side of the third sealing strip 800 abuts against the outer side of the inner vertical sill 630. Install the door frame component 900 onto the structural wall 2030; Hinge one side of door panel 1000 to the left or right door frame.

[0063] The installation method of the ship's cabin sealing system of the present invention, the installation of the ship's airtight doors, especially the door sills, is simple and convenient while ensuring that they can be disassembled and installed. After installation, the sealing performance is good, which meets the requirements of the bulkhead for weather tightness. Moreover, during installation, the outer side of the fixing member 100 set above the deck 2010 and the outer side of the vertical plate 220 are coplanar with the outer side of the structural wall 2030. This can reduce the accumulation, concealment and snagging of garbage, facilitate cleaning, and prevent uneven protrusions from obstructing or even injuring personnel on the ship.

[0064] Subsequently, thermal insulation cotton 1300 can be filled into the cavity of the lower sill, and then the decorative panel 1220 can be installed on the lower connecting plate 1210. The fastener 100 is arranged on the deck 2010 and directly welded to the deck 2010 surface, optimizing the construction process and reducing welding to the structural wall 2030. During removal, the sill can be disassembled without destructive operations, and disassembly and reassembly can be completed within 10 minutes. Reinstallation after disassembly still meets the IMO weather tightness standard (water tightness pressure ≥10 kPa).

[0065] Installation of the side sill piece 1500: Place the fifth sealing strip 1400 on the outer side of the structural wall 2030, and connect the outer mounting plate 1530 of the side sill piece 1500 to the structural wall 2030 with bolts, so that the outer mounting plate 1530 and the structural wall 2030 clamp and fix the fifth sealing strip 1400; install the sixth sealing strip 1700 on the side sill plate 1520, so that the inner side of the sixth sealing strip 1700 abuts against the outer side of the inner limiting plate 1510; subsequently, the side sill cavity can be filled with heat insulation cotton 1300, and then the decorative plate 1220 can be installed on the side connecting plate 1230.

[0066] Reference Figures 1 to 5 According to the application of the hull sealing system of the present invention, the aforementioned hull sealing system is applied to a ship.

[0067] Ships using the aforementioned cabin sealing system have detachable door sills that facilitate the entry and exit of large equipment. They also allow for the replacement and repair of sill components after hull deformation or door sealing strip aging, ensuring smooth operation and meeting the ship's weatherproof requirements. Furthermore, the sills are installed without any hidden recesses or protrusions, reducing the accumulation, concealment, and snagging of garbage, and facilitating cleaning and personnel passage.

[0068] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A shipboard airtight door for installation on a ship, characterized in that, The ship's secure doors include: Fasteners, used to securely connect the deck of the vessel; The clamping component includes a horizontal plate and a vertical plate, wherein the lower end of the vertical plate is connected to the outer side of the horizontal plate; A first sealing strip, the top surface of which abuts against the bottom surface of the horizontal plate, and the bottom surface of which abuts against the top surface of the fastener or the top surface of the deck; the horizontal plate and the fastener are connected by bolts, and the horizontal plate is used to clamp and fix the first sealing strip with the fastener or the deck; The second sealing strip has its inner side abutting against the outer side of the vertical plate; The lower sill includes an outer vertical sill, a horizontal sill, and an inner vertical sill. The lower end of the outer vertical sill abuts against the top surface of the fixing member or the top surface of the deck. The outer side of the second sealing strip abuts against the inner side of the outer vertical sill. The vertical plate and the outer vertical sill are connected by bolts, and the vertical plate and the outer vertical sill clamp and fix the second sealing strip. The upper end of the outer vertical sill is connected to the outer side of the horizontal sill, and the inner side of the horizontal sill is connected to the lower end of the inner vertical sill. The third sealing strip has its inner side abutting against the outer side of the inner vertical sill, and its bottom surface abutting against the top surface of the horizontal sill. A door frame component includes an upper door frame, a left door frame, and a right door frame. The left side of the upper door frame is connected to the upper end of the left door frame, and the right side of the upper door frame is connected to the upper end of the right door frame. At least one of the outer vertical threshold, the horizontal threshold, and the inner vertical threshold is connected to the lower end of the left door frame, and at least one of the outer vertical threshold, the horizontal threshold, and the inner vertical threshold is connected to the lower end of the right door frame. The top surface of the upper door frame, the left side of the left door frame, and the right side of the right door frame are all used to connect to the structural wall of the ship. A door panel, one side of which is hinged to the left or right door frame, and the outer side of the third sealing strip is used to abut against the lower end of the door panel.

2. The ship's airtight door according to claim 1, characterized in that, The ship's airtight door also includes a fourth sealing strip. The lower end of the fastener is used to fix and connect to the ship's deck. The outer side of the fourth sealing strip abuts against the inner side of the fastener, and the inner side of the fourth sealing strip abuts against the ship's interior deck covering.

3. The ship's airtight door according to claim 1, characterized in that, The ship's airtight door also includes a lower connecting plate and a decorative plate. The upper end of the lower connecting plate is connected to the bottom surface of the horizontal threshold, and the decorative plate and the lower connecting plate are connected by screws.

4. The ship's airtight door according to claim 3, characterized in that, The ship's airtight door also includes thermal insulation cotton. A lower sill cavity is defined between the top surface of the horizontal plate, the inner side of the outer vertical sill, the bottom surface of the horizontal sill, and the outer side of the decorative panel. The thermal insulation cotton fills the lower sill cavity.

5. The ship's airtight door according to claim 1, characterized in that, The lower sill piece also includes a lower fixing plate, the inner side of which is connected to the upper end of the inner vertical sill, and the outer side of which is provided with a downwardly protruding lower limit protrusion. The top surface of the third sealing strip abuts against the bottom surface of the lower fixing plate, and the lower limit protrusion is used to abut against the top surface or outer side of the third sealing strip.

6. The ship's airtight door according to claim 1, characterized in that, The ship's airtight door also includes a fifth sealing strip, a side sill member, and a sixth sealing strip. The side sill member includes an inner limiting plate, a side sill plate, and an outer mounting plate. The inner side of the fifth sealing strip abuts against the structural wall, and the outer side of the fifth sealing strip abuts against the inner side of the outer mounting plate. The outer mounting plate is used to connect to the structural wall via bolts, and the outer mounting plate and the structural wall clamp and fix the fifth sealing strip. The end of the outer mounting plate near the door panel is connected to the outer side of the side sill plate, the end of the inner limiting plate away from the door panel is connected to the inner side of the side sill plate, the inner side of the sixth sealing strip abuts against the outer side of the inner limiting plate, and the side of the sixth sealing strip away from the door panel abuts against the side sill plate. The side of the door panel close to the fifth sealing strip is used to abut against the other side of the door panel. At least one of the outer vertical sill, the horizontal sill, and the inner vertical sill is connected to the lower end of the fifth sealing strip, and the lower end of the left door frame or the lower end of the right door frame is connected to the upper end of the fifth sealing strip. At least one of the outer vertical sill, the horizontal sill, and the inner vertical sill is connected to the lower end of the side sill piece, and the lower end of the left door frame or the lower end of the right door frame is connected to the upper end of the side sill piece. At least one of the outer vertical sill, the horizontal sill, and the inner vertical sill is connected to the lower end of the sixth sealing strip, and the lower end of the left door frame or the lower end of the right door frame is connected to the upper end of the sixth sealing strip.

7. The ship's airtight door according to claim 6, characterized in that, The side sill piece also includes a side fixing plate, the inner side of which is connected to the inner side of the inner limiting plate. The outer side of the side fixing plate is provided with a side limiting protrusion protruding away from the door panel. The side of the sixth sealing strip near the door panel abuts against the side of the side fixing plate away from the door panel. The side limiting protrusion is used to abut against the inner side of the sixth sealing strip or the side of the sixth sealing strip near the door panel.

8. A ship's cabin sealing system, characterized in that, include: Ship's sealed door as claimed in any one of claims 1 to 7; Deck, the fastener is fixedly connected to the deck; The structural wall connects to the deck. The top surface of the upper door frame, the left side of the left door frame, and the right side of the right door frame are all connected to the structural wall. The outer side of the vertical plate and the outer side of the structural wall are coplanar.

9. A method for installing a ship's cabin sealing system, applied to the ship's cabin sealing system of claim 8, characterized in that, Includes the following steps: The fasteners are welded to the deck so that the outer surface of the fasteners is coplanar with the outer surface of the structural wall. Place the first sealing strip on the fixing member, and connect the horizontal plate of the clamping member to the fixing member with bolts, so that the horizontal plate and the fixing member clamp and fix the first sealing strip. The second sealing strip is placed on the outside of the vertical plate, and the outer vertical sill of the lower sill piece is connected to the vertical plate with bolts, so that the outer vertical sill and the vertical plate clamp and fix the second sealing strip, and the outer side of the vertical plate and the outer side of the structural wall are coplanar. Install the third sealing strip on the horizontal sill so that the inner side of the third sealing strip abuts against the outer side of the inner vertical sill. Install the door frame components onto the structural wall; Hinge one side of the door panel to the left or right door frame.

10. An application of a ship cabin sealing system, characterized in that, Apply the cabin sealing system of claim 8 to a ship.

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