58 results about "Pressure hull" patented technology

The invention provides a manless underwater vehicle. The manless underwater vehicle comprises a pressure hull, a vehicle bow and a vehicle stern, wherein the vehicle bow and the vehicle stern are arranged at two ends of the pressure hull, a liquid control system which is used for controlling the liquid flow is arranged in the pressure hull. The manless underwater vehicle is characterized in that adjustment cabins are respectively arranged between the vehicle bow and the pressure hull and between the vehicle stern and the pressure hull, a piston which divides each adjustment cabin into a liquid storage cabin and a water discharging cavity is arranged in each adjustment cabin, the piston is controlled by the liquid control system and does reciprocating movement in the adjustment cabin, and a permeable hole which is communicated with outside part is formed in the water discharging cavity. The manless underwater vehicle is simple in structure, convenient to arrange, huge in adjustment ability and capable of adjusting trim gestures.

An air bag launch assembly is disclosed which allows for modular loading onto a submarine, the launch of weapons or vehicles external to the submarine pressure hull, while also achieving greater packing density. The air bag launch assembly includes a large, watertight pressure container; one or more smaller, watertight canisters used to contain the weapon or vehicle. The canisters are sized to fit within the larger pressure container. An air bag inflator is attached to the top and / or sides of the small canister to buoy the canister out of the container.

The invention discloses an in-built middle through-hole dynamic throttling element flow meter, belonging to the technical field of automatic detection of a throttling flow meter. The flow meter is characterized in that an in-built middle through-hole dynamic throttling element is adopted; the internal and external pressures of the dynamic throttling element are balanced; the measured fluid pressure is born by a flow meter pressure hull, thus, a thin wall thick dynamic throttling element can be used; the main boy of an anti-blocking mechanism is a flexible filter medium or a filter membrane with a simple structure; compared with the used pore plates of a differential pressure flow meter, the flow meter provided by the invention mainly uses a dynamic venturi tube; the venturi tube has the advantages of small flowing resistance loss, long service life, high precision, and the tube is hard to block and the like. The flow meter provided by the invention is simple in structure, easiness in manufacturing, high in performance cost ratio, less in energy consumption for measurement, thus, the flow meter can be used for measuring the flow of small pipe diameter and dirty fluid, and has a development prospect for replacing differential pressure flow meters and partial small pipe diameter ultrasonic flow meters.

A self-balanced pressure hull device, belonging to the field of pressure structure technology of deep-sea submersibles, being assembled by nesting, from inside to outside, a spherical inner housing, a spherical intermediate housing and a spherical outer housing around the sphere centre, pairs of symmetric coaxial connecting shaft components being connected between the spherical inner housing and the spherical intermediate housing and between the spherical intermediate housing and the spherical outer housing, respectively; axes of the two pairs of connecting shaft components are perpendicular to each other so as to enable the spherical inner housing and the spherical intermediate housing to rotate relative to each other, and the spherical intermediate housing and the spherical outer housing to rotate relative to each other; and each of the connecting shaft components in the two pairs being provided with a spring damper for resisting the axial impact between each two adjacent housings.

A spacecraft is disclosed. The spacecraft (10) includes a pressure hull (12) for containing a gas (13). The spacecraft further includes a propulsion system (18) coupled to the pressure hull so as to be disposed within the pressure hull, the propulsion system operable to generate a propulsion force for propelling the spacecraft through space.

A submarine (1) has an assembly (3) for deploying a life raft (5), the assembly (3) being located in a well (7) formed outside the submarine's pressure hull (11). The assembly includes a pressure vessel (4) for storing the life raft (5) in a pressurized state. To deploy underwater, a lid (71) covering an opening to the well (7) is released to permit the assembly (3), which is buoyant, to ascend towards the water surface. A sensor (43) determines proximity to the water surface, whereby a pneumatic ram (42) in the pressure vessel is activated to eject the life raft (5) from the pressure vessel (4).

A method of removing salt from seawater to produce potable freshwater. Apparatus that may be used with the method includes a large metal cylinder, with open top and bottom ends, anchored to the sea floor offshore. Several pressure hulls may be attached to the side of the cylinder. Within each pressure hull there are several reverse osmosis devices ("RODs"), each containing a membrane that will allow water molecules, but not sodium and chlorine ions, to pass through. Due to the pressure differential, freshwater passes through the membranes by reverse osmosis, and is pumped out of the pressure hulls to a storage facility onshore. After equilibrium is reached, the pumps for the brine can be turned off, as gravity will cause brine to flow down from the pressure hulls through an opening in the bottom of the cylinder. Alternatively, a reverse osmosis system may be supported on an elevated undersea platform.

A submersible vessel having wing and keel assemblies that are extendable for wind-powered surface operation and retractable to reduce drag for submerged operation or to place the vessel in a more compact configuration. A deployment mechanism including an actuator and linkage pivots the wing and keel assemblies-simultaneously between the deployed and retracted configuration. The vessel may have first and second pressure hulls flanking the wing and keel assemblies. A drive mechanism including a motor and a gear train employing pulley-and-cable assemblies rotates either the wing and flap together such that the flap angle relative to the wing is constant, or to change the flap angle relative to the wing with the wing angle of incidence held constant. The invention also provides a retractable wind-powered propulsion apparatus that is mountable to the hull assembly of a submersible or non-submersible vessel.

An assembly for launching bodies from an underwater platform having a pressure hull, and an outer hull subject to free flooding. The assembly includes a module having a proximal end outboard of the pressure hull portion of the platform, a distal end disposed proximate and in alignment with a launch opening in the outer hull portion, and a chamber in the module extending from the distal end of the module to proximate the proximal end of the module, the module chamber being adapted to receive and retain one of the bodies. Support structure on the platform retains the module. A pump on the platform is in communication with water outside the pressure hull, and an impulse tank on the platform is in communication with the pump. A manifold is in communication with the impulse tank for directing outflow of water from the impulse tank to the chamber to eject the body from the chamber.

The present invention discloses a system for wireless communications and / or data transfer through a sea-vessel hull by means of electric and / or magnetic coupling between first and second transducers located on opposing sides of the hull. Transmit and receive transducers located on opposing sides of the hull are clamped around cables which penetrate the hull and which are fed through pressure hull glands in the hull. The inductive transducers couple electric and / or magnetic signals through the sea vessel hull via paths through the pressure hull glands or via paths through the cables. The system for wireless communication and / or data transfer of the present invention is capable of operation through an electrically conductive sea vessel hull which would ordinarily present a physical barrier against the transmission of such signals. The system can be deployed on an ad ad-hoc basis and is capable of providing high data rate and high bandwidth communications and / or data transfer through the sea vessel hull. The system does not interfere with existing cabled systems penetrating the hull via the pressure hull glands. In particular, the system of the present invention requires no modification of existing hardware nor does it require any modification of the hull for operation.

The invention belongs to the technical field of cleaning of marine biofouling and particularly relates to a cavitation cleaning device. A cavitation cleaning device for clearing biofouling on surfaces of marine ships and platforms comprises a water inlet adapter (5), a cavitation cleaning spray gun (6), a head cover (7), a stabilizing disc (8), a control unit (9), a pressure hull (10), a power unit (11), a depth sensor (12), a tail cover (13), a lifting oil bag (14), a two-way hydraulic pump (15), an oil storage barrel (16) and a battery pack (17). The cavitation cleaning device provided by the invention can be used for cleaning for a long time underwater without needing underwater manual operation, and the cleaning process of the cavitation cleaning device is finished by an operator on a deck through complete remote control of a control center according to a signal fed back by an underwater camcorder unit. Because underwater manual operation is avoided, underwater potential safety hazards of workers are eliminated; and diving suits and underwater acoustic communication equipment are not used, thereby greatly reducing the system cost.

A submersible vessel having wing and keel assemblies that are extendable for wind-powered surface operation and retractable to reduce drag for submerged operation or to place the vessel in a more compact configuration. A deployment mechanism including an actuator and linkage pivots the wing and keel assemblies simultaneously between the deployed and retracted configuration. The vessel may have first and second pressure hulls flanking the wing and keel assemblies. A drive mechanism including a motor and a gear train employing pulley-and-cable assemblies rotates either the wing and flap together such that the flap angle relative to the wing is constant, or to change the flap angle relative to the wing with the wing angle of incidence held constant. The invention also provides a retractable wind-powered propulsion apparatus that is mountable to the hull assembly of a submersible or non-submersible vessel.

With an unmanned underwater vessel having a pressure hull, drive assembly and at least one ancillary device arranged on the pressure hull, for example a propeller protection apparatus (15), the at least one ancillary device (15) is fixedly connected to a lifting body (16), which has a lower density than the density of the water, in order to make it possible to replace the ancillary devices or to arrange additional ancillary devices on the pressure hull without changing the trim of the underwater vessel as a result. The density and volume of the lifting body (16) are selected such that the lifting force acting in the water on the ancillary device (15) and the lifting body (16) compensates for the force of gravity acting on the ancillary device (15) and the lifting body (16).

The invention relates to a metal material blue sea couple current multichannel testing device, which belongs to the field of corrosive couple current situ automatic testing of metal materials in abyssal environment, wherein a couple sample is connected to mounting plates of an operational amplifier and a sensitive resistance, an reference electrode is connected to the mounting plates of the operational amplifier, two mounting plates of the operational amplifier and the sensitive resistance are respectively connected to two different ports of an expander board of a data acquisition unit, which is connected with corresponding port of the data acquisition unit. The operational amplifier, the sensitive resistance mounting plate, the operational amplifier mounting plate, the data acquisition unit mounting plate, the data acquisition unit expander board, the data acquisition unit and a data acquisition unit are mounted in a pressure hull, connected with an external couple sample and the reference electrode through a cable and a multicore cable. The device has the advantages of simple and compact complete machine structure, simple operation of laying and recovery, safe and reliable using performance, long service life.

The invention belongs to the technical field of underwater vehicle navigation safety protection, and particularly relates to an underwater vehicle protection device and method based on depth control. The device comprises a mechanical depth detection device, an electromagnet, a weight, a power supply circuit and a detection circuit, wherein the mechanical depth detection device and the electromagnet are arranged on a pressure hull of an underwater vehicle and contact with water outside the underwater vehicle, the mechanical depth detection device and the electromagnet are in series connection in the same power supply circuit, the electromagnet attracts the weight when the power supply circuit supplies power, and the power supply circuit is connected with a main control computer of the underwater vehicle through the detection circuit. The method includes that when the water pressure outside the underwater vehicle reaches a trigger water pressure, a normally-closed contact of the mechanical depth detection device is opened, the power supply circuit of the electromagnet is opened, without the attraction of the electromagnet, the weight can detach from the underwater vehicle, and a bigger positive buoyancy and a bigger bow-buoying moment enable the underwater vehicle to float upwards automatically. The underwater vehicle protection device based on the depth detection is simple in structure, reliable in work and independent of a control system of the underwater vehicle, and can effectively protect the safety of the underwater vehicle.

A modular watercraft capable of both surface and submersible accommodation and transport of passengers. In one embodiment of the submersible watercraft of this invention, the hull comprises air bladders, thereby avoiding the engineering complexity, weight and cost of constructing a pressure hull.

A submarine (1) has an assembly (3) for deploying a life raft (5), the assembly (3) being located in a well (7) formed outside the submarine's pressure hull (11). The assembly includes a pressure vessel (4) for storing the life raft (5) in a pressurized state. To deploy underwater, a lid (71) covering an opening to the well (7) is released to permit the assembly (3), which is buoyant, to ascend towards the water surface. A sensor (43) determines proximity to the water surface, whereby a pneumatic ram (42) in the pressure vessel is activated to eject the life raft (5) from the pressure vessel (4).

A submarine vehicle may include a storage area for storing loads. The submarine vehicle may further include a pressure hull. The submarine vehicle is configured to pick loads up from a seabed and / or set loads down on the seabed. The storage area may be positioned outside the pressure hull and, in some examples, between numerous pressure hulls. Further, the storage area may include a lower hatch disposed on an underside of the pressure hull or an upper hatch disposed on a top side of the pressure hull. Some submarine vehicles may include a load transporting system for picking the load up from the seabed, setting the load down on the seabed, and / or conveying the load within the storage area.

A multiple stage buoyancy changing system, or variable buoyancy device, for an underwater vehicle. The multiple stage buoyancy changing system comprises: a pressure hull containing a flexibly-sized internal fluid reservoir; a flexibly-sized external fluid reservoir attached to the pressure hull and connected to the internal reservoir; a system of devices and channels configured to move fluid between the internal fluid reservoir and the external fluid reservoir to change a displaced volume of the vehicle. Each stage of the variable buoyancy device can be optimized for maximum energy efficiency while changing the vehicle's displaced volume within an ambient pressure range. A control system for the variable buoyancy device engages different stages depending on ambient external pressure such that maximum energy efficiency is achieved over a large range of pressures / depths.

The invention provides a Beidou / GPS multi-frequency-point antenna for a deep sea intelligent buoy. The Beidou / GPS multi-frequency-point antenna for a deep sea intelligent buoy includes a multi-frequency-point Beidou / GPS antenna, an antenna feed line and a pressure hull, wherein the pressure hull comprises a threading pipe, a flange and a radome; the radome is located at the top of the pressure hull and is sealedly connected to one side of the flange; the multi-frequency-point Beidou / GPS antenna is arranged in the radome; the threading pipe is sealedly connected to the other side of the flange;and the antenna feed line penetrates the threading pipe to connect the multi-frequency-point Beidou / GPS antenna and a Beidou module in a buoy compartment. The Beidou / GPS multi-frequency-point antennafor a deep sea intelligent buoy can ensure that the intelligent buoy can work in an underwater environment with a water depth of 4000 meters, and the Beidou / GPS multi-frequency-point antenna can effectively transmit or receive electromagnetic wave signals of four frequency bands of a Beidou first generation S / L, a Beidou second generation B1 and a GPS L1 after the deep sea intelligent buoy floatson the water surface, and can provide guarantee for deep sea intelligent buoy satellite positioning and implementation of a communication function.

A submarine is designed for combating oil when submerged. The submarine includes a snout (14, 36) which is conduit-connected to a conduit leading into the submarine. The snout (14, 36) is part of an oil suction device and / or part of a device for bringing out an oil decomposition substance. The snout (14) may be designed in a rigid manner and be pivotable from a position between a pressure hull (6) of the submarine and an outer hull (10) forming an upper deck (12) of the submarine, into a position outside the outer hull (10). The snout (36) may also be designed in a flexible manner, wherein the snout (36) is fastened in a section adjacent to a free end, on an ROV (40).

The invention provides a vibration isolation mass rigid vibration isolation structure for a bulkhead of a ship. A vibration isolation mass loop is arranged between a pressure hull and the bulkhead, and is arranged at the position, which is a frame away from the pressure hull, on the edge of the bulkhead, and a partition is used for connecting the vibration isolation mass loop and the pressure hull; and the bulkhead is provided with vibration isolation mass saws, and the vibration isolation mass saws are arranged among equipment installation areas on the bulkhead. A rigid vibration isolation mass composite bulkhead structural form for the ships of the invention has the effect of attenuating and isolating the propagation of structural noise well under the condition of increasing the weight of a bulkhead structure as few as possible.

The invention belongs to the field of submarine hull structure design, and relates to a submarine non-pressure hull pyramid lattice sandwich anti-impact structure and a design method thereof. The invention provides a structure and a design method for applying a pyramid lattice sandwich anti-impact structure to a weak area of a non-pressure shell. The method improves the anti-knock performance of the non-pressure shell by replacing a conventional non-pressure shell with a pyramid lattice sandwich shell plate structure without reducing the structural performance of the original non-pressure shell.

A modular watercraft capable of both surface and submersible accommodation and transport of passengers. In one embodiment of the submersible watercraft of this invention, the hull comprises air bladders, thereby avoiding the engineering complexity, weight and cost of constructing a pressure hull.

A variable buoyancy buoy and method for deployment therefor can include a fixed buoyancy portion formed with a cavity and an enclosure. A pressure hull containing instrumentation can be place in the cavity, and a variable buoyancy portion that can be inserted into the enclosure. The fixed buoyancy portion can have a spar buoy configuration or a marker buoy configuration, and can further be formed with at least one opening to establish a path of fluid communication between the exterior of the buoy and the enclosure. The variable buoyancy portion can be a compressible bladder, or compressible foam, which can change form a maximum volume at the water surface to a minimum volume as the buoy descends towards stowage depth. The decrease in buoyancy facilitates retrieval of the buoy by an apparatus on the ocean floor.

The submarine is equipped with a fluid gas pressure container, in particular for storing liquid oxygen. The liquid gas pressure container is arranged within the pressure hull of the submarine and is surrounded by an outer pressure container which is likewise stored within the pressure hull of the submarine. A device is provided which on exceeding a predefined pressure within one pressure container leads fluid from the pressure container out of the pressure hull.

An interface assures high-speed transmission of optical data between submerged vessels. First and second vessels have pressure hulls and have a first plate transparent to optical data on the pressure hull of the first vessel and a second plate transparent to optical data on the pressure hull of the second vessel. A first optical transceiver in the first vessel is adjacent to the first transparent plate, and a second optical transceiver in the second vessel is adjacent to the second transparent plate. A layer of water between the first plate and the second plate is optically transparent to optical data to allow the first optical transceiver and the second optical transceiver to transmit and receive optical data through the first transparent plate, the water layer, and the second transparent plate.

A submersible vessel having wing and keel assemblies that are extendable for wind-powered surface operation and retractable to reduce drag for submerged operation or to place the vessel in a more compact configuration. A deployment mechanism including an actuator and linkage pivots the wing and keel assemblies-simultaneously between the deployed and retracted configuration. The vessel may have first and second pressure hulls flanking the wing and keel assemblies. A drive mechanism including a motor and a gear train employing pulley-and-cable assemblies rotates either the wing and flap together such that the flap angle relative to the wing is constant, or to change the flap angle relative to the wing with the wing angle of incidence held constant. The invention also provides a retractable wind-powered propulsion apparatus that is mountable to the hull assembly of a submersible or non-submersible vessel.