59results about "Hull bulkheads" patented technology

A method and system for fumigating a vessel includes delivering a fumigation agent to a cargo area of ​​the vessel. In particular, the vessel may be a roll-on / roll-off vessel. In such a system, a pneumatic system is provided for maintaining a selected minimum pressure differential between a selected area of ​​the vessel above the cargo area and the cargo area such that the pressure in the selected area is greater than the cargo area. A control system may maintain the pressure differential.

The invention belongs to a ship cabin structure in the technical field of ships. A ceramic wool layer is arranged on the deck (1) and comprises a framework plate (2) and ceramic wool (3), the framework plate (2) is provided with a plurality of framework plate holes (4) to form a honeycomb structure, the ceramic wool (3) is arranged in each framework plate hole (4) and covers the upper surface and the lower surface of the framework plate (4) at the same time, and a deck covering layer (5) is arranged on the upper surface of the ceramic wool layer. And a built-in enclosure bulkhead plate is arranged on the deck dressing layer (5). According to the ship cabin structure, the structure is simple, main vibration sources and noise isolation can be effectively achieved, silence and no vibration of the experiment cabin are achieved, the limitation of the arrangement position of the experiment cabin is small, an experiment can be conducted in the ship traveling period, and the requirement is met.

This invention discloses a support and reinforcement device for independent cargo holds, relating to the field of ship cargo hold technology. It includes a mounting base plate fixedly connected to the ship, two sliding brackets each with a cargo cover plate fixed to them, and a downward braking assembly for vertically locking a vertical sleeve fixed to a support column. A reinforcing arc plate is slidably mounted on the side of each cargo cover plate facing the mounting base plate. This invention uses two cargo cover plates and a support sleeve to form a cargo storage space. In extreme situations such as deck collapse, the protective top frame, supported by the support column and vertical sleeve, effectively protects the cargo cover plates. The drive slider in the retraction transmission assembly pushes against the tilting frame, causing the two tilting frames to slide towards each other and pull the two cargo cover plates together. This space contraction reduces the internal volume, significantly improving the pressure resistance of the cargo cover plates and ensuring effective protection of the cargo.

The invention discloses a connecting structure for a girder and a vertical aggregate of a ship body respectively positioned on two sides of a bulkhead, which comprises a bulkhead structure, the girder is fixedly arranged on the front surface of the bulkhead structure, and a first vertical aggregate and a second vertical aggregate are fixedly arranged on the back surface of the bulkhead structure; the girder is interrupted at the bulkhead structure; a panel of the girder is provided with a panel amplification end, and the panel amplification end is fixedly connected to the bulkhead structure; the width of the enlarged end of the panel is greater than that of the panel of the girder; the web part of the first vertical aggregate is aligned with the web of the girder; a reverse reinforcing plate is fixedly arranged on the back surface of the bulkhead structure; the reverse reinforcing plate is arranged between the two second vertical aggregates; the reverse reinforcing plate is flush with the panel of the girder; no toggle plate is arranged between the girder and the first vertical aggregate. According to the invention, the space below the girder can be fully utilized and is used for arranging equipment such as a ventilation pipe system and a cable.

A methods and systems of fumigating a vessel include delivering fumigant to a cargo area of the vessel. In particular, the vessel may be a roll-on / roll-off vessel. In such a system, an air pressure system is provided for maintaining a selected minimum pressure differential between a selected area of the vessel above the cargo area and the cargo area, such that pressure of the selected area is greater than the cargo area. A control system may maintain the pressure differential.

The utility model relates to a yacht bulkhead and bulkhead bottom connecting structure which comprises a bulkhead and a bulkhead bottom, the bottom of the bulkhead is welded and fixed on the top surface of the bulkhead bottom, and a first L-shaped plate, a second L-shaped plate and a third L-shaped plate are sequentially welded on connecting corners on two sides between the bulkhead and the bulkhead bottom from inside to outside. According to the connecting structure for the cabin wall and the cabin bottom of the yacht, by increasing the inertia moment of the cross section, the bending resistance and the shearing resistance of the area are remarkably improved. Local stress is dispersed into a bulkhead and a bulkhead bottom structure in a larger range through the L-shaped plates, and fatigue cracks or deformation caused by single-point overload is avoided.

The embodiment of the invention discloses a piezoelectric stack clamping device for active vibration reduction of a bulkhead, relates to the technical field of structural vibration control, and can implement faster active control on the vibration response of the bulkhead on the premise that the structure is simple and the stability is high. The device is characterized in that a pair of bases are installed on the bulkhead in a non-punching mode, and the size and the shape of the bottom of each base are matched with the size and the shape of the bulkhead; one end of the piezoelectric stack actuator is fixedly connected with a base of the clamping device through a bearing seat, and the other end of the piezoelectric stack actuator is in threaded connection with the flexible hinge; the flexible hinge is fixedly connected to the inner side of the other base; the piezoelectric stack actuator serves as a source of excitation force, excitation voltage generates displacement response after being input into the piezoelectric stack actuator, the displacement response is transmitted to the clamping device through the flexible hinge, the displacement response is converted into the excitation force under the limitation of the clamping device, and therefore a pair of force which is equal in magnitude and opposite in direction is output to the base, and excitation is formed.

The utility model discloses a kind of layered weight-reducing groove type bulkheads, which is made by two layered structure plates opposite spliced, the layered structure plate thickness is half of general groove type bulkhead, the layered structure plate is divided into short distance groove and long rectangle groove, two kinds of grooves are oppositely arranged with interval, when two layered structure plates are spliced, the short distance groove outer ridge of one layered structure plate is spliced with the long rectangle groove inner groove of another layered structure plate, compared with general groove type bulkhead, the thickness of the layered spliced groove plate is the same on the same section, and the plate material of two layered structure plates is the same, but the groove wall of the layered spliced groove plate groove is the same as the general groove type bulkhead with the same length and the same number of groove width of short distance groove, but the groove wall of the layered structure plate is thinner, so the material is less.

The utility model belongs to the technical field of ship cabin wallboards, and particularly relates to a light-weight sound-insulation fire-resistant ship cabin wallboard which comprises a wallboard body, splicing grooves are formed in the four corners of the rear surface of the wallboard body, the interiors of the splicing grooves extend to the exterior of the wallboard body, splicing holes are formed in the two faces of the interior of each splicing groove, and the splicing holes are communicated with the splicing grooves. A first splicing block is connected between the two splicing grooves in an inserted mode, and a second splicing block is connected between the four splicing grooves in an inserted mode. After a plurality of wall plate bodies are spliced together, the opposite splicing grooves correspond to each other, the two splicing grooves are connected through the first inserting splicing blocks, and the four splicing grooves are connected through the second inserting splicing blocks, so that the plurality of wall plate bodies can be spliced conveniently, and the splicing efficiency is improved. And after the first splicing blocks and the second splicing blocks are connected in an inserted mode, the multiple wall plate bodies are spliced through installation of the connecting assemblies and the installation holes, and therefore the multiple wall plates can be conveniently spliced, and use is convenient.

The application discloses a kind of marine cabin anti-collision structure and its installation method, including bottom plate, the outside slide of the bottom plate Installation plate, the outside of the installation plate is movably installed with connecting plate by first buffer spring and second buffer spring, the arc-shaped anti-collision wood is installed outside the connecting plate, the outer arc surface of the anti-collision wood is installed with stainless steel layer by mounting assembly.The application can realize the quick disassembly of anti-collision wood, replace the damaged anti-collision wood conveniently, the impact force generated by the anti-collision wood reduces impact, reduces the damage of crew or equipment due to impact, realizes the quick disassembly of stainless steel layer and rubber layer, avoids the overall replacement of anti-collision wood structure, prolongs the service life of parts.

The present application relates to a method for installing a fuel tank top deck section and double-wall pipes of a dual-fuel container ship, which divides the deck section into a deck assembly, an A-zone longitudinal bulkhead assembly, a B-zone longitudinal bulkhead assembly and a C-zone longitudinal bulkhead assembly; the deck assembly and the C-zone longitudinal bulkhead assembly are separately built, the A-zone longitudinal bulkhead assembly is integrally built when the deck assembly is built; the B-zone longitudinal bulkhead assembly is separately built; sand-blasting and painting are performed; the deck assembly is reversely placed and the B-zone longitudinal bulkhead assembly is separately installed; four longitudinal bulkhead plates of the B-zone longitudinal bulkhead assembly are separately installed on the deck assembly, double-wall pipes are passed through the four longitudinal bulkhead plates of the B-zone longitudinal bulkhead assembly, and the rib plates between the four longitudinal bulkhead plates are installed; and the C-zone longitudinal bulkhead assembly is mounted on the B-zone longitudinal bulkhead assembly. The present application divides the deck section into different assemblies for building, installs the double-wall pipes and mounts the assemblies after sand-blasting and painting, so as to avoid damaging the double-wall pipes.

This invention relates to the field of ship vibration reduction and noise reduction technology, specifically to an elastically reinforced connection structure for bulkheads, panels, and handrails. The structure includes bulkheads, panels, and handrails, with the handrails connected to the outer surface of the panels. The key feature is the presence of an elastically reinforced connection structure assembly between the inner surface of the panel corresponding to the handrail and the bulkhead. This assembly includes an elastic noise-reducing reinforcing connector, a lower elastic clip, a support pad, and a support plate. The outer side of the elastic noise-reducing reinforcing connector is bolted to the panel and handrail, while the inner side is connected to the bulkhead via the lower elastic clip, support pad, and support plate. This design offers advantages such as simple structure, good noise reduction effect, improved cabin comfort and working environment, and benefits to the physical and mental health of crew and passengers.

The present invention relates to a passenger ship (1) comprising at least one superstructure (3), this superstructure (3) being formed of a plurality of decks (P0-P5) including decks (P1-P4) each having at least one longitudinally oriented passageway (5) and serving a first set of spaces (40) such as cabins located on the port side and a second set of spaces (42) such as cabins located on the starboard side, characterized in that the spaces (40, 42) of at least one of said sets of spaces are provided with a structural bulkhead (70) parallel or substantially parallel to said passageway (5), which extends within the space occupied by these spaces (40, 42). Figure for the abstract: Fig. 1a

The utility model discloses a transition structure for adjacent bulkheads of a B-type cabin, which comprises a longitudinal wall plate, a bottom wall plate and an arc-shaped outer plate I. The transition structure is characterized in that the longitudinal wall plate and the bottom wall plate are orthogonally arranged at 90 degrees; the arc-shaped outer plate I is arranged at the intersection of the longitudinal wall plate and the bottom wall plate; a bottom bulkhead reinforcing T row, a transverse large longitudinal girder reinforcing plate and an arc-shaped supporting reinforcing plate are sequentially connected to the bottom wall plate, and the arc-shaped supporting reinforcing plate is fixed to the bottom wall plate and the first arc-shaped outer plate at the same time. A longitudinal reinforcing T row is arranged on the longitudinal wall plate and is fixedly connected with the arc-shaped supporting reinforcing plate and the first arc-shaped outer plate; the longitudinal reinforcing T row and the bottom bulkhead reinforcing T row are composed of a plurality of T-shaped plates. The device solves the problems that the evaporation rate of liquefied gas is high and the building efficiency is low in the prior art.

The invention relates to the technical field of cargo ships, in particular to a bottom side tank structure of a bulk cargo ship, which comprises a cabin, a cabin bottom mechanism is arranged at the bottom of the cabin, the cabin bottom mechanism comprises a lifting ejector rod, the lower end of the lifting ejector rod is fixedly connected with the bottom of the cabin, and the upper end of the lifting ejector rod is fixedly connected with a horizontal bottom plate; the side wall of the cabin is hinged to a side plate through a hinge shaft, and the end, away from the hinge shaft, of the side plate is in lap joint with the upper surface of the bottom plate and can slide along the upper surface. When the lifting ejector rod drives the bottom plate to ascend or descend, the end of the side plate slides on the bottom plate along with the lifting ejector rod, so that the side plate rotates around a hinge shaft to change the inclination angle of the side plate, and a dynamic supporting structure capable of changing along with loads is formed through sliding hinge connection between the side plate and the bottom plate. Therefore, high stress concentration caused by rigid connection is avoided, the risk caused by fatigue cracks is effectively reduced, and the safety and durability of the hull structure are improved.

The invention provides a sealed bulkhead structure with a self-adaptive compensation core material.The sealed bulkhead structure with the self-adaptive compensation core material comprises a front longitudinal beam, a forecabin upper edge beam, a shock absorber assembly and a reinforcing connecting part, the front longitudinal beam is horizontally arranged, the forecabin upper edge beam and the front longitudinal beam are oppositely arranged, and the shock absorber assembly is arranged between the front longitudinal beam and the front longitudinal beam; the shock absorber assembly is arranged between the front longitudinal beam and the forecabin upper edge beam and connected with the front longitudinal beam and the forecabin upper edge beam, one end of the reinforcing connecting part is connected with the forecabin upper edge beam, and the other end of the reinforcing connecting part is connected with the shock absorber assembly. Impact force can be effectively dispersed, energy absorption is achieved, and the complete effect of a passenger compartment is protected.

The utility model relates to a dead-corner-free sterile refrigeration house floor structure which structurally comprises a floor body, a wall plate body and an arc corner plate arranged at the edge connecting position of the floor body and the wall plate body, the lower end of the arc corner plate is welded to the floor body, and the upper end of the arc corner plate and the wall plate body are sealed through Sika glue. Rock wool is filled in gaps among the arc corner plates, the wall plate body and the floor body. The utility model has the advantages that the structural design is reasonable, and no dead angle and sterility of the refrigeration house can be effectively ensured through the Sika glue sealing between the skirting line and the wall plate, the filling of the rock wool in the gap and the reasonable structural design of the wall plate and the floor.

The utility model relates to a reversed beam structure of a deck in a ship cargo hold area. The problems that in the prior art, a ship liquid cargo tank deck is insufficient in strength, and a liquid cargo tank is not easy to clean are solved. The deck comprises a deck body, a liquid cargo tank is arranged at the bottom of the deck body, a deck reinforcing aggregate structure is arranged on the upper end face of the deck body, a water sealing bulkhead structure is arranged in the circumferential direction of the deck body, and an outward turning assembly capable of turning the deck outwards so that the liquid cargo tank can communicate with the outside is arranged on the upper end face of the deck body. The utility model has the advantages that the structural strength and the sealing performance of the deck in the cargo tank area are improved, and the cleaning is more convenient.

This invention discloses a biomimetic bulkhead filling structure with sound absorption and noise reduction functions and its preparation method, belonging to the field of shipbuilding and marine engineering technology. This invention extracts the microscopic hollow structure characteristics of crane feathers and integrates the sound absorption principle of Helmholtz resonators to establish four biomimetic lattice structures. By drawing on the hollow structure characteristics of crane feathers through biomimetic design, a lattice structure base with high mechanical robustness is constructed. At the same time, the sound absorption principle of Helmholtz resonators is integrated to organically combine the resonant sound absorption structure with the biomimetic lattice base. This structure inherits the mechanical advantages of crane feathers in terms of light weight and high mechanical robustness, and also has efficient sound absorption and noise reduction capabilities, meeting the integrated requirements of ship bulkheads for lightweight, high mechanical performance, and wide-band efficient sound absorption and noise reduction.

The invention provides a ship anti-reburning safe cabin opening system and method based on external continuous supply, and relates to the technical field of ship fire fighting and safety. The system comprises a cabin body interface which is pre-buried in the outer side wall of a ship cabin body and penetrates through the cabin wall, and the cabin body interface is provided with a detachable screw cover; the conveying pipeline is used for connecting the cabin body interface with an external fire extinguishing agent supply device; the external fire extinguishing agent supply device is integrated with a control system and is used for adjusting the conveying pressure and the flow speed of the fire extinguishing agent; the system is suitable for secondary and above fire extinguishing after first fire extinguishing, before cabin opening and after cabin opening of a ship, and a fire extinguishing agent is continuously conveyed into a cabin through a cabin body connector so as to completely eliminate smoldering and after-combustion hidden dangers. According to the system, secondary or more fire extinguishment can be carried out after a ship completes first fire extinguishment, before cabin opening operation and after cabin opening, accurate detection and continuous extinguishment of a smoldering point in a cabin are achieved, the possibility of after-combustion is completely eradicated, and the safety of goods and equipment in the cabin is protected to the maximum extent.

The invention discloses a hull girder end and vertical aggregate connecting structure form. The hull girder end and vertical aggregate connecting structure form comprises a girder; the girder is fixedly connected to the bulkhead structure; the bulkhead structure is fixedly connected with a first vertical aggregate and a second vertical aggregate; the girder, the first vertical aggregate and the second vertical aggregate are all located on the same side of the bulkhead structure. The bottom of the girder is fixedly connected to the top of the first vertical aggregate; a web of the girder is fixedly connected with a reinforcing plate; the reinforcing plate obliquely extends upwards; the bottom of the reinforcing plate is flush with the end part of the first vertical aggregate; the web part of the first vertical aggregate is flush with the web of the girder; the end parts of the reinforcing plate and the first vertical aggregate are positioned on the same side of a web plate of the girder; no toggle plate is arranged between the girder and the first vertical aggregate. According to the invention, the specification requirement of hull structure design is met, the influence of the girder end bracket on cabin arrangement can be avoided, and the use space of a cabin is greatly released.

The application belongs to the technical field of ship structure design, and discloses a ship bow strong frame design method and a ship. The ship bow strong frame design method comprises the following steps: S1, a positioning line A vertical to a bow outer plate is drawn through a first intersection point a of a bow inner plate and a first transverse bulkhead, and the positioning line A intersects with an extension line of a second transverse bulkhead at a second intersection point b; S2, an included angle α between the positioning line A and the second transverse bulkhead and an arc length L between the positioning line A and the second transverse bulkhead are measured and obtained; S3, the included angle α and the arc length L are divided according to the number of the strong frame structures set between the first transverse bulkhead and the second transverse bulkhead, and a plurality of side strong frame positioning lines B are formed through the second intersection point b; and S4, the side strong frame structures between the bow inner plate and the bow outer plate are arranged along the direction of the side strong frame positioning lines B. The intersection angle between the side strong frame structures and the bow outer plate is large, so that the modulus reduction is not needed during the design, the purpose of saving the steel material, reducing the shipbuilding cost and improving the economic benefit is achieved.

The application relates to a LNG ship liquid cargo containment system corrugated unit and a corrugated plate, wherein the LNG ship liquid cargo containment system corrugated unit comprises a bottom plane part and a corrugated convex part arranged in a stack, the corrugated convex part has a certain height relative to the bottom plane part, the height is less than the length of the bottom plane part; the projection of the corrugated convex part on the bottom plane part coincides with the bottom plane part; the bottom plane part has a plurality of edges, and each edge of the bottom plane part is connected with the corrugated convex part. The corrugated convex structure can simultaneously absorb transverse and vertical low-temperature cold contraction deformation, so that the internal stress generated by the low-temperature contraction of the corrugated plate in a large temperature difference change working scene can be reduced. The corrugated unit has a simple form structure, is easy to process, is easy to control in forming in punching and stamping, has uniform and dispersed thinning rates, and has a high yield.

The utility model belongs to the technical field of ship hulls, and particularly relates to an integral watertight reinforcing plate of a ship hull structure, which comprises a reinforcing plate body, an inserting opening is arranged in the middle of the front side of the reinforcing plate body, a waterstop expansion glue layer is arranged on the outer edge of the reinforcing plate body, and a first welding plate is arranged on the reinforcing plate body in front of the waterstop expansion glue layer. And a second welding plate is arranged on the back of the water-stop expansion glue layer on the reinforcing plate body. Through mutual cooperation of the water stop expansion glue layer, the first welding plate and the second welding plate, the watertight performance of the watertight patching plate is improved, the problem that the watertight patching plate is limited by welding thermal deformation and assembly precision, and microcracks or sealing defects are prone to being generated at the joint position is solved, and the watertight patching plate has good sealing performance. According to the watertight reinforcing plate, the supporting plate, the first fixing bolt, the supporting rod, the second fixing bolt, the mounting plate and the fastening bolt are matched with one another, so that the watertight reinforcing plate has a supporting and reinforcing structure, and the problem that the watertight reinforcing plate is prone to local deformation when bearing a large external load is solved.

The application discloses a connecting assembly, a connecting device and a mounting method of the connecting device, and relates to the technical field of connecting devices. The connecting assembly comprises a corrugated plate and a folded edge plate, the folded edge plate is provided with a bending part, the bending part protrudes towards the corrugated plate, at least a partial area of the corrugated plate is coincident with the projection of the bending part in the horizontal direction, the coincident area of the corrugated plate has a first surface facing the bending part in the horizontal direction, the shape of the first surface is matched with the shape of the bending part, and the first surface is connected with the bending part. The first surface of the corrugated plate facing the bending part in the horizontal direction is matched with the shape of the bending part through grinding treatment, and finally the first surface is tightly connected with the bending part and is connected with each other, so that the defects that the connecting mode of the corrugated plate and the folded edge plate is unstable, the welding amount is huge, the accumulated welding stress is large, and the corrugated plate is easily deformed are solved.

The present invention relates to a ship comprising, in one compartment in which deck tanks are disposed on a deck from among a plurality of compartments in which cargo holds are disposed along the stem-stern direction of a hull: a cargo hold; a double bulkhead space that encompasses the cargo hold; a first deck that covers the upper portion of the cargo hold; a second deck that covers the upper portion of the double bulkhead space; and a deck tank disposed on the second deck, wherein the second deck can have a height lower than that of the deck of the compartment that differs from the one compartment, and the second deck can have a height lower than that of the first deck.

The application discloses a fireproof arc-shaped cabin-penetrating sealing device, relates to the technical field of valve remote transmission mechanisms in the ship industry, and is installed on a fireproof bulkhead. The fireproof bulkhead is provided with a mounting hole. The fireproof arc-shaped cabin-penetrating sealing device comprises a cabin-penetrating pipe, the cabin-penetrating pipe is installed in the mounting hole, a connecting main shaft is arranged in the cabin-penetrating pipe, fireproof sealing rings are arranged at the two ends of the connecting main shaft, end covers are arranged at one end of the fireproof sealing rings, and the end covers are connected with the cabin-penetrating pipe. The fireproof arc-shaped cabin-penetrating sealing device can meet the requirements of the valve remote transmission mechanism in penetrating the bulkhead and transmitting torque, and can reach the fireproof requirement. The structure is simple, and the fireproof arc-shaped cabin-penetrating sealing device is convenient to use.

The application relates to the ship technology field, and particularly discloses a ship groove type bulkhead plane panel frame structure which is arranged between an original ship deck panel frame and an original ship inner bottom plate, is used for assembling with a notch of an original ship groove type bulkhead, and comprises a sealing plate, a vertical partition plate, a reinforcing rib and a triangular elbow plate. The two ends of the sealing plate are connected with the original ship deck panel frame and the original ship inner bottom plate respectively, the sealing plate is used for closing the notch of the original ship groove type bulkhead, the side edge of the sealing plate is welded with the original ship groove type bulkhead and is arranged on the same plane with the original ship groove type bulkhead, the vertical partition plate is vertically arranged on one side of the sealing plate which faces the notch of the original ship groove type bulkhead, the reinforcing rib is connected with the sealing plate, the reinforcing rib is arranged on the two sides of the vertical partition plate, and the triangular elbow plate is arranged at the end of the reinforcing rib. The application can reduce the modification of the original ship structure as much as possible, thereby reducing the workload of the modification, the installation is simple and easy to construct, and the application has high cost performance and practicability.

The application discloses a cylindrical curved surface composite plate based on a zero Poisson's ratio honeycomb core and a preparation method thereof. The composite plate comprises an upper curved surface plate, a lower curved surface plate and an intermediate sandwich honeycomb core. The honeycomb core is formed by parallel arrangement and mutual splicing of multiple corrugated plates with the same cross section profile in the same direction. The cross section of the corrugated plate is composed of periodically repeated 'concave-convex' units, and the concave angle alpha and the convex angle beta of the unit satisfy alpha+beta=180°. Two corrugated plates are spliced in a mirror-symmetrical manner, so that the concave parts are mutually attached to form a half-concave hexagonal honeycomb grid array, and the zero Poisson's ratio characteristic is exhibited. The honeycomb core solves the problem that the traditional honeycomb core must be processed twice when forming a curved surface, can realize high-precision one-time attachment with a single-curvature curved surface, and completes the formation of a cylinder with an arbitrary curvature radius. Meanwhile, the honeycomb core has the advantages of light weight, high strength, batch manufacturing and low cost, and is suitable for fields of aerospace, rail transportation and building.

The application discloses a fire-fighting monitor protection cover integrated with a cabin wall and a wall structure, wherein the fire-fighting monitor protection cover comprises a wall plate, a protection cover top plate horizontally fixed on the top of the wall plate, a protection cover support elbow plate vertically fixed on the inner side surface of the wall plate at the position of the protection cover top plate, and a protection cover observation hole opened on the wall plate at the position of the protection cover top plate. The application makes the original cabin wall structure have the function of the protection cover without destroying the original wall basic structure, and does not need to additionally manufacture an independent protection cover and additionally arrange an independent protection cover near the fire-fighting monitor on the top of the cabin shed and the top of the deck house, thereby reducing the consumption of steel plates, saving the production cost, saving the arrangement space and reducing the structure weight of the ship.