Cabin inner layer leakproof barrier convenient to extend and stretch

By employing a design that facilitates the stretching and expansion of the leak-proof barrier, and utilizing stress absorption by the deformation cavity, impact buffering by the sacrificial connecting block, self-compensation by the flame-retardant gel, and monitoring by the fiber optic grating sensing module, the problems of tensile strength, impact resistance, sealing performance, and real-time monitoring of the leak-proof barrier inside the ship's cabin have been solved, thereby improving safety and reliability.

CN120986602AActive Publication Date: 2025-11-21南通长青沙船舶工程有限公司
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Patent Information

Application Number
CN202511475571.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-16
Publication Date
2025-11-21
Estimated Expiration
2045-10-16

AI Technical Summary

Technical Problem

Existing internal leak-proof barriers for ship hulls suffer from insufficient tensile strength, limited impact resistance, unstable sealing performance, lack of real-time monitoring methods, and poor material and structural adaptability, resulting in low safety and reliability.

Method used

It adopts a leak-proof barrier design that is easy to extend and expand, including a tension plate, a deformation cavity, a sacrificial connector, and a fiber optic grating sensing module. The deformation cavity absorbs tensile stress, the sacrificial connector buffers impact, the flame-retardant gel provides self-compensating sealing, and the fiber optic grating sensing module monitors temperature changes in real time.

Benefits of technology

It improves the tensile and impact resistance of the inner layer of the hull, maintains airtightness, achieves self-compensation and real-time monitoring, and enhances safety and reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a cabin inner layer leakproof barrier convenient to extend and stretch, and relates to the technical field of cabin inner layer leakproof, the cabin inner layer leakproof barrier comprises a connecting mechanism and a control module, the connecting mechanism comprises a leakproof back plate, the interior of the leakproof back plate is fixedly connected with a stretching plate, deformation cavities are formed in the stretching plate at intervals, and the deformation cavities are connected with the control module; a plurality of deformation cavities are formed in the stretching plate, flame-retardant gel is filled in the deformation cavities, fiber bragg grating sensing modules are evenly arranged among the multiple deformation cavities in the stretching plate, and the fiber bragg grating sensing modules are used for monitoring the temperature of the stretching plate. The stress is absorbed through folding or expansion of the deformation cavity, so that the stretching plate extends and is not torn, the overall sealing performance of the leakage-proof back plate is kept, the stretching resistance of the device is enhanced, and the leakage-proof back plate has the characteristics of high practicability and real-time monitoring capability.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship cabin inner layer leakage prevention, in particular to a ship cabin inner layer leakage prevention barrier convenient for extension and retraction. BACKGROUND

[0002] In order to ensure the safety of the internal environment of the cabin, a leakage prevention barrier is usually arranged on the cabin wall or the inner layer of the cabin to prevent liquid or gas leakage from causing equipment damage, personnel injury or environmental pollution. The existing leakage prevention barrier is mostly made of rigid or semi-rigid materials such as metal plates, composite material plates or rubber sealing layers, which are combined with the cabin wall by fixing or pressing to form a sealed protective structure. However, the existing technology has the following main problems:

[0003] During the operation of the ship or submarine, the inner layer of the cabin will be periodically stretched or deformed due to cabin vibration, external impact or temperature changes. The existing leakage prevention barrier structure is mostly rigidly connected or locally flexible, which cannot effectively absorb the tensile stress, resulting in local tearing or sealing failure, reducing the leakage prevention reliability. Especially in the case of long-term operation or frequent vibration, the leakage prevention plate is prone to fatigue failure, with high safety risk.

[0004] In actual navigation or operation, the cabin may be subjected to external impact such as wave impact, collision or movement of equipment in the cabin. The traditional leakage prevention plate is mostly connected by an integral rigid plate, which lacks a buffer design. When the impact is concentrated in a local area, it is easy to cause the leakage prevention plate and the connecting piece to break, reducing the impact resistance of the overall barrier, and it is difficult to achieve self-protection or controllable sacrifice of local damage.

[0005] The existing Chinese patent with publication number CN106573664B discloses a leakage prevention barrier for a liquefied gas cargo tank and a liquefied gas cargo tank and a manufacturing method thereof. Although this application can connect the stroke seal more tightly and stably, it cannot completely solve the above problems.

[0006] Moreover, this application mainly relies on manual inspection or regular maintenance to find leakage hazards, lacking real-time monitoring means for the state of the inner layer, especially the temperature, stress or local rupture, which cannot be learned in time. This makes it difficult to take preventive measures before leakage or abnormality occurs, resulting in high safety risks.

[0007] In summary, the existing leakage prevention barrier of the inner layer of the ship cabin has the problems of insufficient tensile resistance, limited impact resistance, unstable sealing performance, lack of real-time monitoring means, and poor adaptability of materials and structure. Therefore, it is necessary to design a multifunctional leakage prevention barrier that can adapt to stretching and deformation, buffer impact, achieve uniform sealing and self-compensation, and has real-time monitoring capability, in order to improve the safety and reliability of ships, submarines or other liquid / gas storage and transportation equipment. SUMMARY

[0008] The present application aims to provide a cabin inner layer anti-leakage barrier convenient for extension and retraction to solve the problems raised in the background art.

[0009] In order to solve the above technical problems, the present application provides the following technical scheme: a cabin inner layer anti-leakage barrier convenient for extension and retraction, comprising a connecting mechanism and a control module, the connecting mechanism comprising:

[0010] An anti-leakage backboard, the inside of the anti-leakage backboard is fixedly connected with a stretch plate, a plurality of deformation cavities are arranged on the stretch plate at intervals, the inside of the deformation cavity is filled with a fire-retardant gel, and a plurality of fiber grating sensing modules are uniformly arranged between the plurality of deformation cavities on the stretch plate, the fiber grating sensing module is used for monitoring the temperature of the stretch plate.

[0011] According to the above technical scheme, the rear side of the anti-leakage backboard is a plate structure, the rear side of the anti-leakage backboard is fixedly connected with a conductive wire, and the right side and the lower side of the front side of the anti-leakage backboard are fixedly connected with a stretch side plate and an extrusion bottom plate respectively, a connecting hole penetrating up and down is arranged on the lower side of the anti-leakage backboard, the left side front part of the upper end of the stretch side plate extends to the middle part of the anti-leakage backboard to the left, the left side front part of the upper end of the extrusion bottom plate extends to the middle part of the anti-leakage backboard upward, a fixed strip is arranged on the left upper part of the front side of the anti-leakage backboard, the two ends of the fixed strip are fixedly connected with the stretch side plate and the extrusion bottom plate through a sacrifice connecting block respectively, and the middle part of the extrusion bottom plate and the middle part of the stretch side plate are fixedly connected with a sacrifice connecting block.

[0012] According to the above technical scheme, the tensile strength of the material of the sacrifice connecting block is lower than that of the extrusion bottom plate, the stretch side plate and the anti-leakage backboard, the stretch side plate is a plate structure extending rightward from front to back, and the extrusion bottom plate is a trapezoidal structure extending downward from the rear side.

[0013] According to the above technical scheme, the upper side of the stretch plate extends to the front side of the anti-leakage backboard between the upper part of the front side and the stretch side plate, the right side of the stretch plate is fixedly connected with the left side of the stretch side plate, the lower side of the stretch plate is fixedly connected with the upper surface of the extrusion bottom plate, and the left side of the stretch plate extends to the front side of the anti-leakage backboard between the left part of the front side and the left side of the extrusion bottom plate.

[0014] According to the above technical scheme, the plurality of fiber grating sensing modules are electrically connected with the control module, and the lower end of the fiber grating sensing module extends downward from the connecting hole.

[0015] According to the technical scheme, the stretching plate is a cavity structure in the up-down direction arranged inside the deformation cavity, and the upper and lower sides of the deformation cavity are both arranged in a sealed manner in a normal state, the thickness of the side wall of the stretching plate at the deformation cavity is smaller than the thickness of the stretching plate between the deformation cavities, and the side wall of the stretching plate at the deformation cavity is in a left folding state.

[0016] According to the technical scheme, the lower rear part of the extrusion bottom plate is protruded downward, and the lower front part of the extrusion bottom plate is a slope, so that after the extrusion bottom plate is inserted into the upper side of the anti-leakage back plate, the lower side of the extrusion bottom plate can extrude the upper side of the stretching plate forward.

[0017] Compared with the prior art, the present application has the following beneficial effects: by arranging the deformation cavities on the stretching plate, when the inner layer of the cabin is subjected to a stretching force, the stress can be absorbed by the folding or expansion of the deformation cavities, so that the stretching plate is stretched without tearing, thereby maintaining the overall sealing of the anti-leakage back plate and enhancing the stretching resistance of the device.

[0018] By arranging the sacrificial connecting block, when the anti-leakage back plate is impacted, the sacrificial connecting block is preferentially broken to absorb the impact energy, thereby relieving the deformation of the anti-leakage back plate and the extrusion bottom plate and the stretching side plate connected thereto, preventing the back plate or the plate from tearing, and improving the impact resistance and reliability of the anti-leakage device.

[0019] By filling the fire-retardant gel inside the deformation cavities and cooperating with the uniform extrusion of the extrusion bottom plate and the stretching side plate on the stretching plate, the device can achieve good sealing in normal use, the fire-retardant gel can automatically leak out to fill the broken part when the deformation or the deformation cavity is broken, thereby achieving self-sealing compensation, enhancing the anti-leakage effect and safety.

[0020] By arranging the fiber grating sensing module on the stretching plate and electrically connecting it with the control module, the temperature change of the stretching plate can be monitored in real time, and abnormal temperature rise or leakage hazards can be promptly investigated, thereby improving the safety and maintainability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, which together with the embodiments of the present application, serve to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0023] Figure 2 is a schematic diagram of the rear side structure of the present application;

[0024] Figure 3 is a schematic diagram of the connecting mechanism structure of the present application;

[0025] Figure 4 is a schematic diagram of the disassembled structure of the connecting mechanism of the present application;

[0026] Figure 5 is a schematic diagram of the anti-leakage backboard structure of the present application;

[0027] Figure 6 is a schematic diagram of the lower side structure of the anti-leakage backboard of the present application;

[0028] Figure 7 is a schematic diagram of the anti-leakage backboard structure of the present application; Figure 6 is a schematic diagram of the enlarged structure of A in the present application;

[0029] Figure 8 is a schematic diagram of the stretching plate structure of the present application;

[0030] Figure 9 is a schematic diagram of the enlarged structure of B in the present application; Figure 8

[0031] In the figure: 1, connecting mechanism; 2, stretching plate; 3, deformation cavity; 4, fiber grating sensing module; 5, conductive wire; 101, anti-leakage backboard; 102, fixed strip; 103, sacrificial connecting block; 104, extrusion bottom plate; 105, connecting hole; 106, stretching side plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Embodiment one: please refer to Figures 1-9 The present application provides a technical solution: a ship cabin inner layer anti-leakage barrier convenient for extension and retraction, comprising a connecting mechanism 1 and a control module.

[0034] The connecting mechanism 1 comprises: an anti-leakage backboard 101 internally fixedly connected with a stretching plate 2, the stretching plate 2 is provided with deformation cavities 3 at intervals, the stretching plate 2 is a cavity structure in the up-down direction arranged inside the deformation cavities 3, and the upper and lower sides of the deformation cavities 3 are both sealingly arranged in normal state, the thickness of the side wall of the stretching plate 2 at the deformation cavities 3 is less than the thickness of the stretching plate 2 between the deformation cavities 3, and the side wall of the stretching plate 2 at the deformation cavities 3 is in a left folding state;

[0035] ​The rear side of the leakage-proof back plate 101 is a plate-shaped structure, the leakage-proof back plate 101 is fixedly connected with the conductive wire 5 at the rear side, and the right side and the lower side of the front side of the leakage-proof back plate 101 are fixedly connected with the stretching side plate 106 and the extrusion bottom plate 104 respectively, the leakage-proof back plate 101 is provided with the connecting hole 105 penetrating from top to bottom, the left side of the upper end of the stretching side plate 106 extends to the middle of the leakage-proof back plate 101, the left side of the upper end of the extrusion bottom plate 104 extends to the middle of the leakage-proof back plate 101, the left upper side of the front side of the leakage-proof back plate 101 is provided with the fixed strip 102, the two ends of the fixed strip 102 are fixedly connected with the stretching side plate 106 and the extrusion bottom plate 104 through the sacrifice connecting block 103 respectively, and the middle of the extrusion bottom plate 104 and the middle of the stretching side plate 106 are fixedly connected with the sacrifice connecting block 103;

[0036] In actual application, a single device is only a single plate in a sealed array, and the sealed array is completed by splicing a plurality of devices, wherein the extrusion bottom plate 104 is inserted into the upper side of the lower leakage-proof back plate 101, the stretching side plate 106 is inserted into the left side of the right leakage-proof back plate 101, and welding is performed for fixation;

[0037] In the embodiment, the stretching plate 2 is fixedly connected inside the leakage-proof back plate 101, a plurality of deformation cavities 3 are arranged on the stretching plate 2 at intervals, each deformation cavity 3 is a cavity structure in the up-down direction, and the upper side and the lower side are in a sealed state under normal circumstances, the thickness of the side wall of the stretching plate 2 at the deformation cavity 3 is smaller than the thickness of the stretching plate 2 between the deformation cavities 3, and the side wall is in a left folding state, when the inner layer of the cabin is subjected to a stretching force or an external force, the deformation cavities 3 on the stretching plate 2 can adapt to stretching deformation in a folding or expansion mode, so as to absorb stress and prevent the stretching plate 2 and the leakage-proof back plate 101 from being broken or torn, and the specific working process is as follows: the cabin generates stretching, further causes the stretching force to act on the leakage-proof back plate 101, and then causes the deformation cavities 3 on the stretching plate 2 to fold or expand to absorb stress, so that the stretching plate 2 is uniformly stretched, so that the leakage-proof back plate 101 remains complete and sealed, and liquid or gas leakage is avoided,

[0038] In this process, the deformation cavities 3 are arranged to realize stretching adaptation, so that the sealing property of the leakage-proof back plate 101 can be maintained under the action of an external force, and the tensile resistance and safety of the structure are improved.

[0039] Embodiment two: please refer to Figures 1-9 On the basis of embodiment one, the technical scheme of the present application is provided:

[0040] The embodiment further provides a fixing strip 102 on the left upper portion of the front side of the leakage-proof back plate 101, and the two ends of the fixing strip 102 are fixedly connected with the extrusion bottom plate 104 and the stretching side plate 106 through sacrifice connecting blocks 103 respectively, and the middle portions of the extrusion bottom plate 104 and the stretching side plate 106 are also connected through the sacrifice connecting blocks 103, the material of the sacrifice connecting blocks 103 has a tensile strength lower than that of the extrusion bottom plate 104, the stretching side plate 106 and the leakage-proof back plate 101, when the leakage-proof back plate 101 is impacted, the sacrifice connecting blocks 103 are firstly broken to absorb the impact energy, thereby relieving the local deformation of the leakage-proof back plate 101 and the extrusion bottom plate 104 and the stretching side plate 106 connected with the leakage-proof back plate 101, preventing the back plate or the plate member from being torn, and the specific working process is as follows: external impact is applied to the leakage-proof back plate 101 to cause the sacrifice connecting blocks 103 to preferentially bear local stress, and then the sacrifice connecting blocks 103 are broken to absorb the energy, so that the local deformation of the leakage-proof back plate 101 and the extrusion bottom plate 104 and the stretching side plate 106 is reduced, thereby the overall structure is kept intact, and the leakage-proof function is continuously and effectively ensured.

[0041] In this process, the external force impact is buffered through the breaking of the sacrifice connecting blocks 103, the leakage-proof back plate 101 and the related plate members are effectively protected from being damaged, and the reliability and impact resistance of the leakage-proof device are improved.

[0042] Embodiment three: please refer to Figures 1-9 On the basis of the embodiments one and two, the technical scheme of the present application is provided: the inside of the deformation cavity 3 is filled with fire-retardant gel, the stretching side plate 106 is a plate-shaped structure extending rightward from front to back, the extrusion bottom plate 104 is a trapezoidal structure extending downward from back, the lower rear portion of the extrusion bottom plate 104 is protruded downward, the lower front portion of the extrusion bottom plate 104 is a slope, after the extrusion bottom plate 104 is inserted into the upper side of the leakage-proof back plate 101, the lower side of the extrusion bottom plate 104 can extrude the upper side of the stretching plate 2 forward, the material of the sacrifice connecting blocks 103 has a tensile strength lower than that of the extrusion bottom plate 104, the stretching side plate 106 and the leakage-proof back plate 101, the upper side of the stretching plate 2 extends between the front side upper portion of the leakage-proof back plate 101 and the stretching side plate 106, the right side of the stretching plate 2 is fixedly connected with the left side of the stretching side plate 106, the lower side of the stretching plate 2 is fixedly connected with the upper surface of the extrusion bottom plate 104, and the left side of the stretching plate 2 extends between the front side left portion of the leakage-proof back plate 101 and the left side of the extrusion bottom plate 104.

[0043] During the application process of the device, the extrusion bottom plate 104 can extrude the upper side of the stretching plate 2 inside the lower side leakage-proof back plate 101, so that the upper side of the stretching plate 2 is compressed forward, the tearing resistance of the stretching plate 2 and the sealing effect of the deformation cavity 3 are increased, the stretching side plate 106 is welded with the left side of the stretching plate 2 inside the right side leakage-proof back plate 101, the strength of the connection portion is enhanced, and the stretching plate 2 is uniformly stretched when the device is transversely broken.

[0044] The inside of the deformation cavity 3 is filled with fire-retardant gel, the extrusion bottom plate 104 extends downward in a trapezoidal structure after being extruded, the lower rear part is convex, and the lower front part is inclined, the stretching side plate 106 is a plate-shaped structure extending forward and backward to the right, the extrusion bottom plate 104 is inserted into the upper rear of the anti-leakage back plate 101, and the lower side of the extrusion bottom plate 104 extrudes the upper side of the stretching plate 2 forward, so that the stretching plate 2 enhances the sealing performance, when the stretching plate 2 is deformed and causes part of the deformation cavity 3 to be broken, the fire-retardant gel leaks out of the broken part to fill the gap, and self-sealing is formed, and the specific working process is that: when the device is normally used, the anti-leakage back plate 101, the extrusion bottom plate 104 and the stretching side plate 106 work together, when the stretching plate 2 is uniformly stretched, good sealing can be maintained, if the deformation is too large and the deformation cavity 3 is broken, the fire-retardant gel will leak out, thereby automatically filling the broken part, so that the anti-leakage function continues to take effect.

[0045] The device can still maintain anti-leakage sealing in the case of deformation or breakage, and the self-compensation function of the fire-retardant gel enhances the safety and reliability of the device.

[0046] Embodiment four: please refer to Figures 1-9 On the basis of embodiments one, two and three, the technical scheme of the present application is provided: a plurality of deformation cavities 3 on the stretching plate 2 are evenly provided with fiber grating sensing modules 4, the fiber grating sensing modules 4 are used for monitoring the temperature of the stretching plate 2, a plurality of fiber grating sensing modules 4 are electrically connected with a control module, and the lower end of the fiber grating sensing module 4 extends downward through the connecting hole 105.

[0047] A plurality of deformation cavities 3 on the stretching plate 2 are evenly provided with fiber grating sensing modules 4, the fiber grating sensing modules 4 are electrically connected with the control module through the connecting hole 105, the temperature data of the stretching plate 2 can be collected in real time, the temperature data can be analyzed by the control module, possible abnormal temperature rise or leakage hidden danger can be found in time, so that maintenance or treatment measures can be taken in advance, and if the anti-leakage back plate 101 causes the rear side conductive wire 5 to break, the conductive wire 5 is electrically connected with the control module and passes through a low-voltage current, the control module monitors the electrification of each conductive wire 5, the deformation position can be quickly located when the conductive wire 5 is broken, and if the outer sealing layer is broken and air enters, condensation water will be formed between the anti-leakage back plate 101 and the inner side mounting plate of the ship body, the conductive wire 5 works and heats to maintain the temperature between the anti-leakage back plate 101 and the inner side mounting plate of the ship body, which is beneficial to evaporation of the condensation water before maintenance.

[0048] The specific working process is that: the temperature signal is collected by the fiber grating sensing module 4 during the use of the stretching plate 2, and then the temperature change is analyzed by the control module, if the temperature is abnormal or exceeds the threshold value, an alarm or maintenance instruction is triggered, so that potential leakage risks can be checked in advance, and the long-term safe operation of the inner layer anti-leakage barrier of the ship cabin is ensured.

[0049] The real-time monitoring of the temperature of the stretching plate 2 is realized through the fiber grating sensing module 4, so that the leakage hidden danger can be found in advance, and the safety and reliability of the leakage prevention device are improved.

[0050] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0051] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A leak-proof barrier for the inner layer of a ship's cabin that is easy to extend and retract, comprising a connecting mechanism (1) and a control module, characterized in that: The connecting mechanism (1) includes: A leak-proof backplate (101) is provided, and a tension plate (2) is fixedly connected inside the leak-proof backplate (101). Deformation cavities (3) are spaced apart on the tension plate (2). Flame-retardant gel is filled inside the deformation cavities (3). Fiber grating sensing modules (4) are uniformly arranged between several deformation cavities (3) on the tension plate (2). The fiber grating sensing modules (4) are used to monitor the temperature of the tension plate (2).

2. The easily extendable and retractable leak-proof barrier for the inner layer of a ship's cabin according to claim 1, characterized in that: The rear side of the leak-proof backplate (101) is a plate-like structure. A conductive wire (5) is fixedly connected to the rear side of the leak-proof backplate (101). A tension side plate (106) and an extrusion base plate (104) are fixedly connected to the right front side and the lower front side of the leak-proof backplate (101), respectively. A through-hole (105) is provided on the lower side of the leak-proof backplate (101). The upper left front part of the tension side plate (106) extends to the left to the middle of the leak-proof backplate (101). The upper left front part of the extrusion base plate (104) extends upward to the middle of the leak-proof back plate (101). A fixing strip (102) is provided on the upper left front part of the leak-proof back plate (101). Both ends of the fixing strip (102) are fixedly connected to the tension side plate (106) and the extrusion base plate (104) respectively through sacrificial connecting blocks (103). Sacrificial connecting blocks (103) are fixedly connected to the middle part of the extrusion base plate (104) and the middle part of the tension side plate (106).

3. A ship's internal leak-proof barrier that is easy to extend and retract, as described in claim 2, is characterized in that: The tensile strength of the material of the sacrificial connecting block (103) is lower than that of the extruded base plate (104), the tensile side plate (106), and the leak-proof back plate (101).

4. A ship's internal leak-proof barrier that is easy to extend and retract, as described in claim 3, is characterized in that: The stretching side plate (106) is a plate-shaped structure extending from front to back to the right, and the extrusion bottom plate (104) is a trapezoidal structure extending downward from the rear.

5. A ship's internal leak-proof barrier that is easy to extend and retract, as described in claim 4, characterized in that: The upper side of the stretch plate (2) extends to the upper front part of the leak-proof back plate (101) and between the stretch side plate (106). The right side of the stretch plate (2) is fixedly connected to the left side of the stretch side plate (106). The lower side of the stretch plate (2) is fixedly connected to the upper surface of the extrusion base plate (104). The left side of the stretch plate (2) extends to the left front part of the leak-proof back plate (101) and between the left side of the extrusion base plate (104).

6. A ship's internal leak-proof barrier that is easy to extend and retract, as described in claim 5, is characterized in that: The fiber Bragg grating sensing modules (4) are electrically connected to the control module, and the lower end of the fiber Bragg grating sensing module (4) extends downward through the connection hole (105).

7. A ship's internal leak-proof barrier that is easy to extend and retract, as described in claim 6, characterized in that: The tension plate (2) is a hollow structure in the vertical direction inside the deformation cavity (3), and the upper and lower sides of the deformation cavity (3) are sealed under normal conditions. The side wall thickness of the tension plate (2) at the deformation cavity (3) is less than the thickness of the tension plate (2) between several deformation cavities (3), and the side wall of the tension plate (2) at the deformation cavity (3) is folded to the left.

8. A ship's internal leak-proof barrier that is easy to extend and retract, as described in claim 7, characterized in that: The lower rear part of the extrusion base plate (104) protrudes downward, and the lower front part of the extrusion base plate (104) is inclined. After the extrusion base plate (104) is inserted into the upper side of the anti-leakage back plate (101), the lower side of the extrusion base plate (104) can press forward against the upper side of the stretching plate (2).

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