Safety watertight chamber door for fire extinguishing type cabin

Abstract

The invention discloses a safety watertight chamber door for a fire extinguishing type cabin, and belongs to the field of cabin watertight doors, the safety watertight chamber door for the fire extinguishing type cabin comprises a frame welded with the cabin in a sealing manner, one side of the frame is connected with a watertight door body through a hinge, and the watertight door body is sequentially provided with a heat insulation heat exchange body, a watertight internal pressure body and a safety lock control body from outside to inside; the heat insulation and heat exchange body comprises a heat insulation plate and a heat exchange base plate installed on the heat insulation plate in a press fit mode. The internal pressure trigger type fire extinguishing sprayer in the lock column is automatically opened through high-pressure water supply, flame near the door body can be effectively restrained through spraying, meanwhile, the temperature of the door body and the temperature of surrounding air are greatly reduced through evaporation heat absorption, an evacuation channel is protected, and the heat exchange pipeline arranged in the heat insulation heat exchange body is used for heat exchange. Circulating cooling water is used for continuously taking away heat transmitted from the fire scene side, so that the temperature of the outer surface of the watertight door is remarkably reduced, high-pressure water is injected into the water pressure abutting pipe to expand the water pressure abutting pipe, continuous pressure is applied to the rubber sealing gasket, the rubber sealing gasket is tightly attached to the frame sealing outer groove, and oxygen is effectively prevented from entering the fire scene side.

Description

Technical Field

[0001] This invention relates to the field of watertight doors for ship cabins, and more particularly to a safety watertight door for fire-extinguishing ship cabins. Background Technology

[0002] Watertight doors are crucial equipment for separating ship compartments and are commonly used in drilling ships (barges), semi-submersible transport vessels, and other similar vessels. They are classified into different grades depending on their installation location, but all require excellent sealing performance and fire resistance. Ships often spend months at sea, and if a fire breaks out in one compartment, watertight doors can effectively prevent the fire from spreading to adjacent compartments, confining the fire to a single compartment.

[0003] Currently, conventional watertight doors are significantly less heat-insulating than ship bulkheads. In the event of a fire, heat can easily be transferred rapidly to the outside of the cabin through the watertight doors, causing a rapid rise in temperature near the door and severely impacting external evacuation routes, threatening the safety of personnel.

[0004] To improve fire-resistant sealing, some existing watertight doors have fire-expanding rubber strips installed at the sealing points of the door frame or door body. In the event of a fire, the rubber strip expands due to heat, temporarily enhancing the seal and preventing fresh air from entering the fire, thus playing a role in suffocating the fire. However, these fire-expanding rubber strips have significant drawbacks: after the fire is extinguished, the strips are difficult to retract, preventing the watertight door from opening properly. Furthermore, the expanding rubber strips become permanently ineffective after being ablated by high temperatures, rendering them unusable. This means that the watertight door will lose its normal opening and closing function during the ship's voyage for several months, creating a safety hazard. Ship owners will have to temporarily change course, dock nearby to replace the rubber strips or repair the door, severely impacting navigation plans and economic efficiency. Therefore, there is an urgent need for a watertight door structure that can actively insulate against heat during a fire, dynamically enhance the seal, and be reusable after a fire.

[0005] Based on this, the present invention proposes a safety watertight door for fire-extinguishing ship cabins. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the prior art by proposing a fire-extinguishing type safe watertight compartment door for ship cabins.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A fire-extinguishing type safety watertight compartment door for ship cabins includes a frame welded to the cabin in a sealed manner. A watertight door body is connected to one side of the frame body via a hinge. The watertight door body is configured from the outside to the inside as a heat exchanger, a watertight internal pressure body, and a safety lock control body. The heat exchanger includes a heat insulation plate and a heat exchange substrate pressed and installed with the heat insulation plate. The heat exchange substrate is provided with heat exchange pipes for circulating heat exchange to reduce the temperature outside the watertight door. The watertight internal pressure body includes a sealing base plate, the outer wall of the sealing base plate is provided with an indentation, the inside of the indentation is provided with a rubber sealing gasket to improve the sealing performance, the inner wall of the frame is provided with a sealing outer groove adapted to the rubber sealing gasket, and the inside of the indentation is also provided with a water pressure sealing element to improve the sealing effect of the rubber sealing gasket in the event of a fire. The safety locking control body includes an inner locking base plate. The inner locking base plate is connected to a control disc via a control shaft that penetrates the watertight inner pressure body and the side wall of the heat exchanger. The control shaft is connected to a locking column via a linkage locking control. An internal pressure triggered fire extinguishing sprayer is installed inside the locking column. The inner wall of the cabin is provided with multiple inner locking buckles that are adapted to the locking column.

[0008] As a preferred embodiment, the internal pressure triggered fire extinguishing sprayer includes a sliding locking cavity opened in the locking column, and a spray telescopic tube is slidably arranged on the inner wall of the sliding locking cavity. The spray telescopic tube is slidably connected to the sliding locking cavity through a sealing air plug.

[0009] As a preferred embodiment, the inner wall of the sliding lock cavity is connected to a trigger sealing ball via a trigger post, and an inner core channel is provided inside the spray telescopic tube to form a sliding seal with the trigger sealing ball. The other end of the inner core channel is connected to a high-pressure sprayer.

[0010] As a preferred embodiment, the water pressure seal includes a pressure port formed in the inner wall of the recess, a water pressure contact pipe is provided in the pressure port, and a heat exchange connecting plate that is rotatably connected to the control shaft is provided in the sealing base plate. The heat exchange connecting plate is connected to the water pressure contact pipe through multiple direct pipes.

[0011] As a preferred embodiment, the heat exchange tube route consists of a heat exchange frame tube embedded in the heat exchange substrate and a connecting pipe connecting adjacent heat exchange frame tubes. The heat exchange frame tube is connected to the direct tube through a transverse connecting pipe that penetrates into the sealing substrate.

[0012] As a preferred embodiment, the interlock control control includes a control gear disk disposed inside the inner lock base plate and connected to the control shaft. The two sides of the control gear disk are connected to interlock connecting plates via sliding limit members, and the sidewalls of the interlock connecting plates are provided with racks that mesh with the control gear disk.

[0013] As a preferred embodiment, the inner wall of the inner locking base plate is connected to a sliding connecting rod via a U-shaped slide block. One end of the sliding connecting rod is connected to the side wall of the locking pin via a reinforcing inner tube, and the other end of the sliding connecting rod is connected to a linkage rod via a rotating shaft. The end of the linkage rod is connected to the control plate via a connecting shaft.

[0014] As a preferred embodiment, the sliding limiting component includes a limiting port formed on the control plate, and the inner wall of the inner locking base plate is slidably connected to the limiting port through a limiting cap.

[0015] As a preferred embodiment, the outer wall of the control shaft is provided with a pressure conveying plate, which is connected to the inner pipe of the sliding connecting rod through multiple water conveying pipes. The inner pipe of the rod is connected to the sliding lock cavity through a reinforcing inner pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the event of a fire, the present invention automatically activates the internal pressure-triggered fire extinguishing sprayer inside the lock column by high-pressure water supply. The spray can effectively suppress the flames near the door, and at the same time, it can significantly reduce the temperature of the door and the surrounding air by evaporation and heat absorption, thus protecting the evacuation passage. Furthermore, through the heat exchange pipes set inside the heat exchange body, the circulating cooling water continuously removes the heat transferred from the fire side, thus significantly reducing the temperature of the outer surface of the watertight door (the evacuation side outside the cabin).

[0017] 2. In the event of a fire, high-pressure water is injected into the water pressure contact pipe, causing it to expand and applying continuous pressure to the rubber sealing gasket, making it tightly fit against the outer sealing groove of the frame. This effectively blocks oxygen from entering the fire area, thus playing a role in suffocation and extinguishing the fire. Compared with existing fire-expanding rubber strips, this sealing force comes from controllable water pressure. After the fire ends, the pressure can be released to restore the original state, and the watertight door can be opened normally and reused, avoiding door failure caused by rubber strip burning or permanent expansion.

[0018] 3. The safety watertight door designed in this invention allows all functional layers to be restored to their initial state after a fire by depressurization and resetting, without the need to replace any disposable ablated parts. The watertight door can be put into use immediately for subsequent navigation, significantly reducing navigation economic costs and safety hazards. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the assembly structure of a fire-extinguishing ship cabin safety watertight compartment door proposed in this invention; Figure 2 This is a schematic diagram of the main structure of a fire-extinguishing type safe watertight compartment door for ship cabins proposed in this invention; Figure 3 This is a schematic diagram of the heat exchanger structure in a fire-extinguishing ship cabin safety watertight compartment door proposed in this invention. Figure 4 This is a schematic diagram of the watertight internal pressure body in a safety watertight compartment door for fire extinguishing ship cabins, as proposed in this invention. Figure 5 This is a schematic diagram of the interlocking control system in a safety watertight compartment door for fire extinguishing ships, as proposed in this invention. Figure 6 This is a schematic diagram of the cross-sectional structure of the control shaft, control gear plate, and pressure conveying plate in a fire-extinguishing ship cabin safety watertight compartment door proposed in this invention; Figure 7This is a schematic diagram showing the connection relationship between the sliding connecting rod and the internal pressure triggered fire extinguishing sprayer in a fire-extinguishing type safe watertight compartment door for ship cabins proposed in this invention. Figure 8 This is a schematic diagram of the cross-sectional structure of an internal pressure-triggered fire extinguishing sprayer for a safe watertight compartment door in a fire-extinguishing ship cabin, as proposed in this invention.

[0020] In the diagram: 1. Frame; 2. Insulation plate; 3. Heat exchange base plate; 4. Heat exchange pipeline; 5. Sealing base plate; 6. Inner recess; 7. Rubber sealing gasket; 8. Inner locking base plate; 9. Control shaft; 10. Locking post; 11. Inner lock buckle; 12. Sliding locking cavity; 13. Spray telescopic tube; 14. Sealing air plug; 15. Trigger post; 16. Trigger sealing ball; 17. Inner core channel; 18. High-pressure sprayer; 19. Water pressure contact tube; 20. Heat exchange connecting plate; 21. Direct pipe; 22. Lateral connecting pipe; 23. Control gear plate; 24. Interlocking plate; 25. Sliding connecting rod; 26. Reinforced inner tube; 27. Limiting port; 28. Limiting cap; 29. ​​Pressure conveying plate; 30. Sealing outer groove; 31. Linkage rod. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] Example, refer to Figures 1 to 8 A fire-extinguishing type safety watertight compartment door for ship cabins includes a frame 1 welded to the cabin in a sealed manner. A watertight door body is connected to one side of the frame 1 via a hinge. A high-pressure water supply pipeline hidden in the fireproof layer is provided between the frame 1 and the watertight door body for delivering high-pressure water from the outside to the control shaft 9, thereby realizing the delivery of high-pressure water layer by layer to the heat exchanger, the watertight internal pressure body and the safety lock control body. In the event of a fire, the ship's own fire-fighting system or an external high-pressure water source can be used to directly deliver cooling water or fire-extinguishing water to the functional layers inside the watertight door body. The fire alarm triggering is existing technology and will not be described in detail here.

[0025] The watertight door body is configured from the outside to the inside as an insulation heat exchanger, a watertight internal pressure body, and a safety lock control body. The heat exchanger, watertight internal pressure body, and safety interlocking body have clearly defined functions and work together: the outer layer actively cools down to block heat conduction, the middle layer dynamically enhances the seal to isolate oxygen, and the inner layer is linked to interlock and trigger fire extinguishing spray, thereby maintaining the reliability and repeatability of the watertight door throughout the fire process and avoiding the navigation safety hazards of "difficult to open again after fire extinguishing" and "unusable afterward" in existing technologies.

[0026] The heat exchanger includes a heat insulation plate 2 and a heat exchange substrate 3 that is pressed and installed with the heat insulation plate 2. The heat exchange substrate 3 is provided with a heat exchange pipe 4 for circulating heat exchange to reduce the temperature outside the watertight door. The heat exchange pipeline 4 consists of heat exchange frame tubes embedded in the heat exchange substrate 3 and connecting pipelines connecting adjacent heat exchange frame tubes. The heat exchange frame tubes are connected to the direct pipe 21 through the transverse connecting pipe 22 that penetrates into the sealing substrate 5. The heat exchange frame tubes are embedded, which increases the contact area with the heat exchange substrate 3 and improves the heat exchange efficiency. The connecting pipelines enable multiple heat exchange frame tubes to form a series or parallel circulation network, ensuring that the cooling water flows evenly through the entire door cross section.

[0027] The advantage of adopting the above structure is that the heat exchange pipes 4 set inside the heat exchange base plate 3 continuously carry away the heat transferred from the fire side through the circulating cooling water, so that the temperature of the outer surface of the watertight door (i.e. the side of the external evacuation passage) is significantly lower than that of the fire side.

[0028] The watertight internal pressure body includes a sealing base plate 5, an inner recess 6 is provided on the outer wall of the sealing base plate 5, a rubber sealing gasket 7 for improving sealing is provided inside the inner recess 6, the rubber sealing gasket 7 is made of fire-resistant rubber material, a sealing outer groove 30 adapted to the rubber sealing gasket 7 is provided on the inner wall of the frame 1, and a water pressure sealing component is also provided inside the inner recess 6 to improve the sealing effect of the rubber sealing gasket 7 in the event of a fire. Furthermore, the water pressure seal includes a pressure port opened in the inner wall of the recess 6, and a water pressure contact pipe 19 is provided in the pressure port. A heat exchange connecting plate 20 rotatably connected to the control shaft 9 is provided in the sealing base plate 5. In this scheme, the rotation angle of the control shaft 9 does not exceed 180 degrees. At this angle, the heat exchange connecting plate 20 can be provided with a rotational sealing connection to the control shaft 9. The heat exchange connecting plate 20 is connected to the water pressure contact pipe 19 through multiple direct pipes 21. Both the direct pipes 21 and the water pressure contact pipe 19 are located inside the watertight inner pressure body. The water pressure contact pipe 19 is located in the inner wall of the rubber sealing gasket 7. Under normal operation, the water pressure contact pipe 19 does not exert pressure on the rubber sealing gasket 7 it contacts. When there is high pressure water inside the water pressure contact pipe 19, it will expand and generate pressure, thereby generating continuous pressure on the rubber sealing gasket 7, causing it to deform. Together with the sealing outer groove 30 on the frame 1, it achieves the effect of sealing and preventing oxygen from entering.

[0029] The safety lock control body includes an inner lock base plate 8. The inner lock base plate 8 is connected to a control disc via a control shaft 9 that passes through the side wall of the watertight inner pressure body and the heat exchange body. The control shaft 9 is connected to a lock pin 10 via a joint control lock control. Multiple inner lock buckles 11 adapted to the lock pin 10 are provided on the inner wall of the cabin.

[0030] Furthermore, the interlock control control includes a control gear disk 23 disposed inside the inner lock base plate 8 and connected to the control shaft 9. The control gear disk 23 is connected to the interlock connecting plates 24 on both sides by sliding limit members. The sliding limit members include limit openings 27 opened on the interlock connecting plates 24. The inner wall of the inner lock base plate 8 is slidably connected to the limit openings 27 by limit caps 28. The side wall of the interlock connecting plates 24 is provided with racks that mesh with the control gear disk 23. The racks provided on the two interlock connecting plates 24 are arranged opposite to each other. During the rotation of the control gear disk 23, the two interlock connecting plates 24 will move in opposite directions respectively.

[0031] Furthermore, a sliding connecting rod 25 is connected to the inner wall of the inner locking base plate 8 via a U-shaped slide block. The U-shaped slide block is fixedly installed on the inner wall of the inner locking base plate 8 and is slidably connected to the sliding connecting rod 25 to limit the vertical displacement of the sliding connecting rod 25. One side wall of the sliding connecting rod 25 is connected to the side wall of the locking pin 10 via a reinforcing inner tube 26, and the other side wall of the sliding connecting rod 25 is connected to a linkage rod 31 via a pivot. The end of the linkage rod 31 is connected to the control plate 24 via a connecting shaft.

[0032] It should be noted that the control shaft 9 runs through the entire watertight door body. One end of the control rotary table is connected to the outside to control the opening and closing of the watertight door body, and the other end is connected to the inner lock 11 to realize linkage control.

[0033] The locking column 10 is equipped with an internal pressure triggered fire extinguishing sprayer. The internal pressure triggered fire extinguishing sprayer includes a sliding locking cavity 12 opened in the locking column 10. A spray telescopic tube 13 is slidably arranged on the inner wall of the sliding locking cavity 12. The spray telescopic tube 13 is slidably connected to the sliding locking cavity 12 through a sealing air plug 14. The setting of the sealing air plug 14 is such that when water pressure enters the sliding locking cavity 12, the water pressure will force the spray telescopic tube 13 connected to the sealing air plug 14 to move outward.

[0034] Furthermore, the inner wall of the sliding lock cavity 12 is connected to a trigger sealing ball 16 via a trigger post 15. The spray telescopic tube 13 has an inner core channel 17 that forms a sliding seal with the trigger sealing ball 16. The other end of the inner core channel 17 is connected to a high-pressure sprayer 18. The high-pressure sprayer 18 is used to generate spray, which can suppress the fire on the side close to the watertight door and reduce the temperature at the watertight door, thereby protecting the external personnel evacuation route.

[0035] When the water pressure causes the spray telescopic tube 13 to move outward, the trigger sealing ball 16, which was originally located in the inner core channel 17 inside the spray telescopic tube 13, will gradually disengage from the inner core channel 17, thereby opening the inner core channel 17 that was originally sealed by the trigger sealing ball 16, so as to achieve high-pressure water supply to the high-pressure sprayer 18; and after the fire ends, the spray telescopic tube 13 can be moved and reset for reuse to meet the needs of the watertight chamber door during subsequent ship navigation.

[0036] It is worth noting that the trigger sealing ball 16 and the inner core channel 17 constitute a "water pressure delayed opening valve": when the spray telescopic tube 13 is not fully extended, the trigger sealing ball 16 still blocks the inner core channel 17, and the high-pressure sprayer 18 does not work; only when the water pressure is large enough and the spray telescopic tube 13 is extended to the correct position, the trigger sealing ball 16 relatively exits the inner core channel 17, and the channel is opened, allowing high-pressure water to enter the high-pressure sprayer 18 to produce a fine spray. This timing control ensures that the spray is only started when the locking column 10 has reached the effective spray position, avoiding premature spraying that would not be effective in the critical area.

[0037] The outer wall of the control shaft 9 is provided with a pressure conveying plate 29. The pressure conveying plate 29 is connected to the rod internal pipeline opened in the sliding connecting rod 25 through multiple water conveying pipes. The rod internal pipeline is connected to the sliding locking cavity 12 through the reinforcing inner tube 26. In order to show the core components in the figure, some conventional pipeline connection technologies such as water conveying pipes are not shown in the figure.

[0038] The advantages of the above structure are that the U-shaped slide provides precise linear guidance for the sliding connecting rod 25, ensuring that the locking pin 10 can be accurately aligned with the inner locking buckle 11 during locking and unlocking, avoiding offset of the locking pin 10 due to thermal deformation or installation errors. The linkage rod 31 converts the linear movement of the control plate 24 into the linear movement (or the opposite direction) of the sliding connecting rod 25, achieving a reasonable layout of the movement direction and making the overall locking mechanism more compact. The reinforced inner tube 26 not only serves as a transmission connector but also has an internal channel for the flow of fire extinguishing media, integrating transmission and delivery functions and reducing the space occupied by additional piping.

[0039] In this invention, the water pressure contact pipe 19 remains contracted in the unpressurized state, without affecting normal opening and closing. When a fire occurs, high-pressure water is injected, causing the contact pipe to expand and compress the rubber sealing gasket 7, forming a positive feedback sealing force that increases with the water pressure. Since the deformation of the rubber sealing gasket 7 is elastic, and the pressure comes from removable water pressure, it can return to its original state after the pressure is released after the fire is extinguished. At the same time, this tight fit effectively blocks fresh air from entering the fire area through the door gap, playing a "suffocating and extinguishing" role in the fire. However, unlike traditional expansion strips, this solution will not cause the door to jam due to carbonization or permanent deformation of the strip, completely solving the problem of "difficulty in reopening the watertight door after fire extinguishing" in the prior art. Together with the resettable spray telescopic pipe 13, it enables the watertight door to be reused after a fire.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A safety watertight door for fire-extinguishing ship cabins, comprising a frame (1) welded to the cabin seal, characterized in that, The frame (1) is connected to a watertight door body by a hinge on one side. The watertight door body is arranged from the outside to the inside as a heat exchanger, a watertight internal pressure body and a safety lock control body. The heat exchanger includes a heat insulation plate (2) and a heat exchange substrate (3) pressed and installed with the heat insulation plate (2). The heat exchange substrate (3) is provided with a heat exchange pipeline (4) for circulating heat exchange to reduce the temperature outside the watertight door. The watertight internal pressure body includes a sealing base plate (5), the outer wall of the sealing base plate (5) is provided with an inner recess (6), the inner recess (6) is provided with a rubber sealing gasket (7) to improve the sealing performance, the inner wall of the frame (1) is provided with a sealing outer groove (30) that is compatible with the rubber sealing gasket (7), and the inner recess (6) is also provided with a water pressure sealing element to improve the sealing effect of the rubber sealing gasket (7) in the event of a fire. The safety lock control body includes an inner lock base plate (8). The inner lock base plate (8) is connected to a control disc via a control shaft (9) that passes through the side wall of the watertight inner pressure body and the heat exchange body. The control shaft (9) is connected to a lock column (10) via a joint control lock control. An internal pressure triggered fire extinguishing sprayer is installed inside the lock column (10). The inner wall of the cabin is provided with multiple inner lock buckles (11) that are adapted to the lock column (10).

2. The safety watertight compartment door for fire-extinguishing ship cabins according to claim 1, characterized in that, The internal pressure triggered fire extinguishing sprayer includes a sliding lock cavity (12) opened in the lock column (10), and a spray telescopic tube (13) is slidably arranged on the inner wall of the sliding lock cavity (12). The spray telescopic tube (13) is sealed and slidably connected to the sliding lock cavity (12) through a sealing air plug (14).

3. A fire-extinguishing type watertight compartment door for ship cabins according to claim 2, characterized in that, The inner wall of the sliding lock cavity (12) is connected to a trigger sealing ball (16) via a trigger post (15). The spray telescopic tube (13) has an inner core channel (17) that forms a sliding seal with the trigger sealing ball (16). The other end of the inner core channel (17) is connected to a high-pressure sprayer (18).

4. A fire-extinguishing type watertight compartment door for ship cabins according to claim 3, characterized in that, The water pressure seal includes a pressure port opened on the inner wall of the recess (6), and a water pressure contact pipe (19) is provided in the pressure port. A heat exchange connecting plate (20) rotatably connected to the control shaft (9) is provided in the sealing base plate (5). The heat exchange connecting plate (20) is connected to the water pressure contact pipe (19) through multiple direct pipes (21).

5. A fire-extinguishing type watertight compartment door for ship cabins according to claim 4, characterized in that, The heat exchange pipeline (4) consists of a heat exchange frame tube embedded in the heat exchange substrate (3) and a connecting pipeline connecting adjacent heat exchange frame tubes. The heat exchange frame tube is connected to the direct pipe (21) through a transverse connecting pipe (22) that penetrates into the sealing substrate (5).

6. A safety watertight compartment door for fire-extinguishing ship cabins according to claim 5, characterized in that, The control control unit includes a control gear plate (23) disposed inside the inner lock base plate (8) and connected to the control shaft (9). The control gear plate (23) is connected to the control connecting plate (24) on both sides by sliding limit members. The control connecting plate (24) has a rack on its side wall that meshes with the control gear plate (23).

7. A fire-extinguishing type watertight compartment door for ship cabins according to claim 6, characterized in that, The inner wall of the inner locking base plate (8) is connected to a sliding connecting rod (25) via a U-shaped slide block. One side wall of the sliding connecting rod (25) is connected to the side wall of the locking post (10) via a reinforcing inner tube (26). The other side wall of the sliding connecting rod (25) is connected to a linkage rod (31) via a rotating shaft. The end of the linkage rod (31) is connected to the control plate (24) via a connecting shaft.

8. A fire-extinguishing type watertight compartment door for ship cabins according to claim 7, characterized in that, The sliding limit component includes a limit opening (27) on the control plate (24), and the inner wall of the inner locking base plate (8) is slidably connected to the limit opening (27) through a limit cap (28).

9. A safety watertight compartment door for fire-extinguishing ship cabins according to claim 7, characterized in that, The outer wall of the control shaft (9) is provided with a pressure conveying plate (29). The pressure conveying plate (29) is connected to the rod internal pipeline opened in the sliding connecting rod (25) through multiple water conveying pipes. The rod internal pipeline is connected to the sliding lock cavity (12) through the reinforcing inner tube (26).

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