46results about "Hull shells" patented technology

The present invention discloses a fairlead hole structure for a double-hull bulwark, comprising a double-hull bulwark portion, a fairlead hole portion and a connecting bracket; the fairlead hole portion comprises an outer sealing plate, an intermediate cylindrical sealing plate, an inner sealing plate, an outer round steel and an inner round steel; the outer sealing plate and the inner sealing plate are both one-way curved plates with a conical bell mouth; the two ends of the outer sealing plate are respectively welded to the outer end ports of the bulwark outer plate and the intermediate cylindrical sealing plate; the two ends of the inner sealing plate are respectively welded to the inner end ports of the bulwark inner plate and the intermediate cylindrical sealing plate; the outer round steel and the inner round steel are both annular and respectively welded to the two end ports of the intermediate cylindrical sealing plate; a plurality of connecting brackets are radially arranged at equal angles around the center of the intermediate cylindrical sealing plate and are welded to the fairlead hole portion and the double-hull bulwark portion on all sides. The present invention can make the fairlead hole and the double-hull bulwark structure self-contained, can be manufactured and formed on site in one go, avoiding the problem of secondary construction, and at the same time has the advantages of high structural strength, rigidity and stability, simplicity, economy and beauty.

The invention discloses a non-pressure-resistant shell main structure of an unmanned underwater vehicle and a machining method, and relates to the technical field of underwater vehicles. The device comprises a lower shell and frameworks, the lower shell and the frameworks are fixedly connected in an up-and-down buckling mode, a transverse framework and a longitudinal framework are fixedly connected in a mutually perpendicular mode, and metal embedded parts are bonded to the positions, where equipment and a floating material body are installed, of the transverse framework and the longitudinal framework; the shell and the framework are both made of carbon fiber composite materials, a buoyancy material is arranged in the space formed by the shell and the framework, the buoyancy material, the shell and the framework form an integral revolving body streamline structure, and during processing, a modified epoxy gel coat is adopted, so that the performance of the shell is improved by means of blocking of nano-montmorillonite, wear resistance of silicon carbide and toughening of polyurethane microspheres. Water-resistant, wear-resistant and impact-resistant surface protection is provided for the shell, and underwater erosion and collision are resisted; the wettability and binding force with the carbon fiber cloth are improved by adopting the modified epoxy resin, and the mechanical bearing capacity of the composite material is enhanced.

Method of assembling a tubular floating structure and its use A first and a second tubular member (11, 12) are welded to opposite sides of a stiffening ring (10) in order to obtain a double-segment (12 / 11). Further segments (13, 14) can be added to form a tubular multi-segment with stiffening rings (10) in between adjacent 5 tubular members (11, 12, 13). The resulting multi-segment (12 / 11 / 13) is used as a tub- ular buoyancy module in a floating offshore structure.

The invention relates to a tower (2) for loading and / or unloading a tank (1) intended to contain a liquefied gas, the tower comprising at least two hollow masts (11, 12, 13) which extend parallel in a longitudinal direction (D), the masts being connected by reinforcing structures (20, 25, 26), each reinforcing structure comprising at least one crosspiece (21) and extending perpendicular to said longitudinal direction, the reinforcing structures being distributed along the masts being spaced apart by spacings (EN, EA) located between adjacent reinforcing structures along the masts, the reinforcing structures being distributed such that the spacings comprise a plurality of normal spacings (EN) having a normal spacing distance (H1), and a number equal to one or two of adaptation spacings (EA) having an adaptation spacing distance (H2) different from said spacing distance normal. Figure for the abstract: Fig.2.

The invention discloses a bionic robotic fish based on magnetic driving and a propelling method thereof, and relates to the technical field of fish bionics, the bionic robotic fish is composed of a bionic fish body, a magnetic driving device and a fish tail, and the magnetic driving device drives the fish tail to swing back and forth to propel the fish body to advance; according to the magnetic driving device, the magnetic field direction of the electromagnetic module is periodically changed through the control module, the magnetic driving device interacts with the permanent magnet module to generate torque, the swing module and the fishtail are driven to perform efficient and smooth reciprocating motion, and the driving mode is simple in structure and higher in reliability, durability and maintainability; the crescent-shaped structure of the fish tail simulates the swimming mechanism of real fishes, strong propulsive force is provided, and the bionic fish body is completed according to bionics, so that the bionic fish body has excellent adaptive capacity and flexible movement performance in complex submarine topography and high-current environment, and can easily pass through narrow space or execute fine operation.

The invention relates to the technical field of composite structure ship plate forming, in particular to a basalt fiber composite structure ship plate and forming equipment thereof, the basalt fiber composite structure ship plate comprises a surface protection layer, a middle functional layer, a core supporting layer and a bottom joining layer which are arranged from top to bottom, and the thickness ratios of all the layers are 15%, 30%, 40% and 15% in sequence; and the middle functional layer comprises a flexible heating layer which is electrified to heat. The outer side of the ship plate can be effectively prevented from being frozen when the ship sails in a severe cold area, so that the problems of ship weight increase, gravity center shift, stability reduction, sailing resistance increase, fuel consumption increase, ship structure damage, key equipment damage and the like caused by freezing are prevented, sailing risks are remarkably reduced, and the sailing efficiency is improved. Pollution and damage of accidents such as sinking and oil leakage to the marine environment are reduced, meanwhile, the living environment of sailors is improved, and cargo safety and normal operation of equipment on the ship are guaranteed.

[Problem] To provide an index-based hull structure manufacturing method, design method and design program with which it is possible to prevent a breach of a cargo oil tank and oil outflow, or to reduce the amount of outflow, in the event of running aground. [Solution] The present invention includes: a step for selecting a steel plate to be applied to a hull structure 10 of a ship; a step for quantifying a stress-strain relationship of the steel plate; a step for using the stress-strain relationship to execute a grounding analysis of the hull structure 10 to which the steel plate is applied, to obtain a calculated value of a critical grounding speed; a step for determining a required value of the critical grounding speed; and a step for evaluating a grounding resistance of the hull structure 10 on the basis of the calculated and required values of the critical grounding speed. The hull structure 10 for which it has been determined, from the evaluation result of the grounding resistance, that the required value is satisfied, is manufactured.

The application belongs to the technical field of military ship plates, and discloses a ship detachable plate which can be separately disassembled, comprising a ship body surface, a ship detachable single plate being tightly and clippably connected to the ship body surface, a group of telescopic rods being fixedly connected to the inner walls on both sides of one end of the ship detachable single plate, and a rubber clamping cylinder being fixedly connected to the other end of the two groups of telescopic rods. The ship detachable single plate is placed on the U-shaped clamping rod on the ship body surface by artificial operation, the rubber clamping cylinder is clamped on the U-shaped clamping rod, and the ship detachable single plate is temporarily limited. When the ship detachable single plate clamped and installed on the surface of the ship body surface is damaged after long-time use, the damaged ship detachable single plate is replaced by passive reverse rotation of the sensor through the central control, so that the ship detachable single plate is separated from the ship body surface, and the ship detachable single plate on the ship body surface is separately disassembled.

A method for assembling a tubular floating structure and its use. First and second tubular members (11, 12) are welded to opposite sides of a stiffening ring (10) to obtain a double segment (12 / 11). Additional segments (13, 14) can be added to form a tubular multi-segment with a stiffening ring (10) between three adjacent tubular members (11, 12, 13). The resulting multi-segment (12 / 11 / 13) is used as a tubular buoyancy module for a floating offshore structure.

This application discloses a double-hull support assembly for a ship, comprising: ribs, a plurality of outer shell longitudinal ribs, a plurality of inner shell longitudinal ribs, and reinforcing ribs; the ribs are connected between the outer shell plates and the inner shell plates; through holes are formed in the ribs; the plurality of outer shell longitudinal ribs are arranged on the outer shell plates along the ship's height direction, and each of the outer shell longitudinal ribs extends along the ship's length direction; the spacing between adjacent outer shell longitudinal ribs is equal; each of the outer shell longitudinal ribs passes through the through holes and is connected to the ribs; the plurality of inner shell longitudinal ribs are arranged on the inner shell plates along the ship's height direction, and each of the inner shell longitudinal ribs extends along the ship's length direction; the spacing between adjacent inner shell longitudinal ribs is equal; the inner shell longitudinal ribs are opposite to and staggered with the outer shell longitudinal ribs; each of the inner shell longitudinal ribs passes through the through holes and is connected to the ribs; the reinforcing ribs are arranged perpendicular to the ribs, the outer shell plates, and the inner shell plates, and are connected to the ribs.

The invention relates to the technical field of ship heat preservation and heat insulation, in particular to a ship composite heat insulation structure which comprises a heat insulation coating layer, a spraying insulation layer and a reinforced sealing layer from inside to outside. The ship body steel plate is coated with the heat insulation coating layer, the thickness ranges from 2 mm to 10 mm, and the heat conductivity coefficient is smaller than or equal to 0.035 W / m.k; the sprayed insulating layer covers the heat insulation coating, and the thickness of the sprayed insulating layer is 20-80 mm; and the reinforced sealing layer is coated on the spraying insulating layer, the thickness is 20-100 microns, and the impact resistance is greater than or equal to 50 cm. By means of the mode of combining multiple functional layers, a cross-scale heat insulation system is constructed, the multi-element hierarchical synergistic effect is achieved, the cold and heat bridge phenomenon is avoided through the integrated technology, the defect of a single heat insulation structure is overcome, and the heat preservation and heat insulation requirements of ships in the polar region environment can be met. In addition, the thermal insulation coating system is different from a traditional thermal insulation coating, the synthesized novel benzoxazine structure can achieve good sealing and anti-corrosion performance, and the service life of the material is greatly prolonged.

The invention relates to the technical field of ship manufacturing, in particular to a modular honeycomb core board ship and a construction method thereof. According to the honeycomb core plate module, materials are efficiently utilized through a hexagonal honeycomb structure, the overall steel consumption of a ship is reduced, and the construction cost is reduced; due to the modular design, the construction period of the ten-thousand-ton ship is shortened, and the labor cost is greatly reduced; the independent sealed cabin and the double-layer shell structure form multiple safety barriers, and buoyancy can still be kept even if a small part of the cabin is damaged; the honeycomb structure improves the impact resistance by dispersing stress, and the structural stress under extreme sea conditions is lower than that of a traditional hull; compared with the traditional fuel power, the hybrid energy system has the advantages that the energy consumption is reduced and the carbon emission is reduced; the energy utilization rate is improved through intelligent energy distribution, the energy storage device adapts to the marine environment, and the continuous navigation stability is guaranteed.

This application discloses an underwater vehicle recovery device based on a floating bladder cable delivery device, which relates to the field of positioning and recovery. The device comprises an end cap, a floating bladder, and a gas cylinder. The end cap is connected to a hollow cylinder, which is connected to the vehicle. The end cap is connected to the outside of the cylinder via a connecting device. The cylinder has a through hole. The gas cylinder is connected to the side of the end cap facing the center of the cylinder and inserted into the cylinder through the through hole. The floating bladder is sleeved on the outside of the gas cylinder. A breaking device is also connected to the side of the end cap facing the cylinder to break the connecting device and cause the end cap to eject the gas cylinder and floating bladder from the through hole. The end cap is connected to the inner wall of the cylinder via a cable, ensuring that the supercavitating vehicle can be recovered quickly, efficiently, and at low cost.

A submersible vehicle having an elongate shape comprises, arranged along a length of the submersible vehicle, an external surface comprising: a front portion, a middle portion, and a rear portion, a first transitional portion between the front portion and the middle portion, and a second transitional portion between the middle portion and the rear portion; wherein, in a cross-sectional plane perpendicular to the length of the submersible vehicle: the front portion comprises a substantially circular cross-section, the middle portion comprises a substantially triangular cross-section formed of a base surface and, angled relative to the base surface, a first upper surface and a second upper surface, the surfaces joined by radiused vertices, and the rear portion comprises a substantially circular cross-section; the first transitional portion configured such that the substantially circular cross-section of the front portion gradually transitions, along the length of the submersible vehicle, to the substantially triangular cross section of the middle portion, and the second transitional portion configured such that the substantially triangular cross section of the middle portion gradually transitions, along the length of the submersible vehicle, to the substantially circular cross-section of the rear portion. A corresponding hull for a submersible vehicle, a fairing for a submersible vehicle, a kit of parts and a seismic survey system are also provided.

The utility model discloses a ship body which comprises a ship body shell and a reinforcing structure. The hull shell is an integrally formed metal piece; the reinforcing structure is a friction stir additive deposited on the inner surface of the hull shell. The ship body is high in overall structural strength, few in weld joints and high in machining efficiency.

Provided are a manufacturing method, a design method, and a design program for a hull structure based on an index capable of preventing oil tank breakage and oil discharge or reducing the discharge amount when touching a reef. Comprising the steps of: selecting a steel plate to be applied to a hull structure (10) of a ship; quantifying the stress-strain relationship of the steel plate; a calculation unit that uses a stress-strain relationship to perform a strike analysis of a hull structure (10) to which a steel sheet is applied, and obtains a calculated value of a limit strike speed; determining a required value of the ultimate reef-touching speed; and evaluating the strike resistance of the hull structure (10) on the basis of the calculated value of the limit strike speed and the required value, in which the hull structure (10) determined to satisfy the required value is manufactured on the basis of the evaluation result of the strike resistance.

This invention discloses an underwater self-propelled biomimetic exploration robot, belonging to the field of robotics technology. The exploration robot includes a spherical outer shell and multiple power systems arranged in a circumferential array on the outer shell. Each power system includes a drive motor installed inside the spherical outer shell, multiple elastic frames arranged in a circumferential array outside the outer shell, and a canopy fixed to the elastic frames. One end of each elastic frame is fixed to the outside of the spherical outer shell, and the other end passes through the outer shell and is wound around the drive motor shaft via parachute ropes. The elastic frames form a U-shaped structure. The support structure of this invention's underwater self-propelled biomimetic exploration robot is a highly stable spherical outer shell with strong resistance to external pressure. Furthermore, this structure has strong adaptability to complex water surface and underwater environments such as eddies and turbulence, and can continue to operate even if it capsizes.

This application relates to the field of metal material processing technology, and discloses a titanium-steel composite plate, its preparation method, and a ship. The titanium-steel composite plate includes a steel substrate layer, a pure titanium cladding layer, and an alloy layer, wherein the alloy layer is disposed between the steel substrate layer and the pure titanium cladding layer; wherein the alloy layer includes a Fe-intermediate element-Ti ternary alloy layer, and the Fe-intermediate element-Ti ternary alloy layer satisfies the following conditions along the direction from the steel substrate layer to the pure titanium cladding layer: the Fe content gradually decreases, the Ti content gradually increases, and the content of the intermediate element first gradually increases and then gradually decreases; the intermediate element is a transition element in the Fe-Ti system. This composite plate exhibits excellent interface quality, as well as excellent structural stability and corrosion resistance.

To provide a ship capable of reducing restriction of arrangement of a fuel tank and a pump and transferring methanol as fuel from the fuel tank by the pump while suppressing vaporization of the methanol.SOLUTION: A ship includes a hull having a pair of broadsides and a bottom, a lowermost deck provided in the hull and defining a double bottom space between the lowermost deck and the bottom, a tank at least partially provided in the double bottom space and capable of storing methanol as fuel, a pump provided outside the tank and below the lowermost deck in the hull and pumping the methanol in the tank, and a combustion device provided in the hull and to which the methanol pumped by the pump is supplied.SELECTED DRAWING: Figure 1

This invention discloses a method for arranging a staggered tandem cavity group with superior hydrodynamic characteristics, relating to the field of underwater vehicle structure design technology. The key technical points are: it includes multiple cavities arranged in at least two columns, with the at least two columns of cavities staggered along the direction of travel of the underwater vehicle, forming a staggered tandem layout. Furthermore, the ratio of the distance I between two adjacent cavities in the same column to the cavity length L is I / L ≥ 2. This invention, through the staggered tandem cavity layout, reduces the total drag of the cavity group by 70.6%, effectively suppressing the downstream cavity drag multiplication and flow interference. Simultaneously, this cavity layout balances the flow field structure, significantly reduces the Reynolds stress peak, fundamentally improves acoustic stealth performance, avoids noise frequency down-frequencyization and energy amplification, and while maintaining the total number and function of cavities, it still meets the requirements of high performance and high concealment.

The invention belongs to the technical field of air cushion suspension transportation equipment, and relates to an air cushion suspension ship with a lift low-wind-resistance bow body, the air cushion suspension ship comprises a ship body main frame, an arc streamline bow body and a stern body, the arc streamline bow body and the stern body are symmetrically arranged at the two ends of the ship body main frame, the sweepback angle of the front edge of the bow is 17-18.3 degrees, and the downward inclination angle of the lower edge of the bow is 5-7 degrees to form a front air seal. An integrally-formed air cushion flow guide enclosure shell is arranged on the lower portion of the ship body main frame, the air cushion flow guide enclosure shell, the ship head and the ship tail define an air cushion positive pressure cavity, and a ground effect air cushion is formed through air supply of front and rear duct booster fans to achieve non-contact suspension. The system further comprises a splayed symmetrical four-rotor power system, and four groups of rotor assemblies are fixed through vertical left and right motor mounting brackets to form a main propulsion and posture adjusting unit. Wind resistance is reduced and lifting torque is generated through the bow at a specific angle, air leakage is restrained in cooperation with an air seal structure, and low-wind-resistance, zero-friction suspension and high-stability control are achieved.

A method for assembling a tubular floating structure and its use. First and second tubular members (11, 12) are welded to opposite sides of a stiffening ring (10) to obtain a double segment (12 / 11). Additional segments (13, 14) can be added to form a tubular multi-segment with a stiffening ring (10) between three adjacent tubular members (11, 12, 13). The resulting multi-segment (12 / 11 / 13) is used as a tubular buoyancy module for a floating offshore structure.

Disclosed is a composition for coating substrates used in wet environments, including boats, ships, other marine vessels and their submerged parts. The composition includes a solvent-based monomer, a diluent, an adhesion promoter, a rheology modifier, and ceramic performance additives such as hollow and non-hollow spheres. When the composition is applied to a substrate, the coating protects by minimizing cavitation and underwater radiated noise during operation of the marine vessel. The coating may also exhibit improved substrate adhesion, overcoat adhesion, recoat adhesion, flexural strength of at least 10 mm, reduced noise emission, and / or improved hardness as indicated by scratch resistance (compared to a control).

The invention discloses a staggered serial cavity group arrangement method with better hydrodynamic characteristics, and relates to the technical field of underwater vehicle structure design, and the technical scheme is characterized in that a plurality of cavities are included, the cavities are arranged into at least two columns, the at least two columns of cavities are arranged in a staggered manner in the advancing direction of an underwater vehicle, and the cavities are arranged in a staggered manner in the advancing direction of the underwater vehicle. And the ratio I / L of the distance I between two adjacent cavities in the same column to the length L of the cavities is greater than or equal to 2. Through the staggered serial cavity layout, the total resistance of the cavity group is reduced by 70.6%, resistance multiplication and flow interference of downstream cavities are effectively inhibited, meanwhile, the flow field structure is balanced through the cavity layout, the Reynolds stress peak value is remarkably reduced, the sound stealth performance is fundamentally improved, low noise frequency and energy amplification are avoided, and the sound stealth effect is improved. And the requirements of high performance and high concealment are also considered while the total number of the cavities and the functions are kept unchanged.

A ship structure is provided that enables inspection of welded portions that become critical points in bilge tanks without incurring a large amount of expense on inspection equipment. A side girder (31) is provided along the welded portion between the first connecting edge (29Ac) of the first transverse web member (29A) and the second connecting edge (29Ba) of the second transverse web member (29B) in the transverse web (29). A window hole (33) for inspection is formed in the side girder (31). The window hole (33) is used to allow an inspection worker (M) to inspect the welded portion between the inclined inner edge (29Ab) and the straight inner edge (29Bc), which become the critical point (CP) for endurance inspection, while lying prone on the side girder (31).

An embodiment of the present invention provides a large-opening-angle head configuration for an underwater vehicle and the underwater vehicle. The head configuration is a left-right symmetric and up-down asymmetric structure. In the axial direction, it includes: a head spherical section, a middle cylindrical section, a curved surface transition section, and a rear cylindrical section. The head spherical section is a hemispherical structure with a radius of R2, and the radius of the middle cylindrical section is the same as that of the head spherical section. The rotation axes of the middle cylindrical section and the rear cylindrical section are located in the symmetry plane. The curved surface transition section includes N angular section curves. With the rotation axis of the middle cylindrical section as a reference, the angle between each section is θ, and each angular section is evenly distributed in the circumferential direction, θ = 180 / N. The projection of each angular section curve on the corresponding angular section is a B-spline constructed by control points. The technical solution of the present invention can take into account the acoustic fan surface, fluid performance, and structural layout, and improve the comprehensive performance of the underwater vehicle underwater.

The invention relates to the field of shipbuilding equipment.The anti-shearing structure of the container ship cabin comprises an outer plate, a double-layer bottom is arranged at the bottom end of the outer plate, a deck platform is horizontally arranged in the outer plate, an inner longitudinal wall is vertically arranged in the outer plate, the inner longitudinal wall is fixedly connected with the deck platform, and the inner longitudinal wall is fixedly connected with the deck platform. And the inner longitudinal wall is fixedly connected with the outer plate. The structure can be rapidly arranged, the cabin separation requirement of a cabin can be met, the effect of supporting a cabin deck can be achieved, the thickness of a hatch coaming is reduced, and the structure weight and the shipbuilding cost are reduced.

A collapsible kayak may include a single-piece hull including a plurality of crease lines along which the hull is foldable. A floorboard lines a midship portion of the hull between a bow portion and a stern portion, and the floorboard includes a base and a pair of outboard walls permanently fixed at distal ends to port and starboard gunwales of the hull. The bow, stern, and midship portions are configured as a tri-fold, such that the bow portion and the stern portion of the kayak are foldable toward each other to overlap the midship portion of the hull when collapsed.

The utility model discloses a dragon boat, which belongs to the technical field of dragon boats, the dragon boat comprises a dragon head, a dragon body and a dragon tail, the dragon body adopts a hull structure, the hull structure comprises a support frame body and a ship-shaped shell, the ship-shaped shell is provided with a cabin, the support frame body is erected in the cabin, the support frame body mainly comprises a keel and ribs, the dragon head is installed on the bow of the ship-shaped shell, and the dragon tail is installed on the stern of the ship-shaped shell. The supporting frame body can replace an inner shell of the ship body, the supporting frame body can provide supporting, it is guaranteed that the ship body has sufficient structural strength, compared with a ship body structure with an inner shell and an outer shell formed at the same time, the manufacturing process of the ship body structure is much simpler, and the manufacturing efficiency can be effectively improved.