1212 results about "Floating platform" patented technology

Innovative new methods in connection with lighter-than-air (LTA) free floating platforms, of facilitating legal transmitter operation, platform flight termination when appropriate, environmentally acceptable landing, and recovery of these devices are provided. The new systems and methods relate to rise rate control, geo-location from a LTA platform including landed payload and ground-based vehicle locations, and steerable recovery systems.

The invention relates to the field of natural gas chemical industry, in particular to a natural gas desulfurization process suitable for an offshore floating platform. The natural gas desulfurizationprocess comprises a reactor, a re-reactor and a centrifugal machine; acid gas coming from a boundary region is directly introduced into the reactor, a trivalent complex iron catalyst enters the re-reactor, the trivalent complex iron catalyst at the bottom of the re-reactor enters the reactor under the control of a valve and a pipeline, a chemical reaction is then carried out, divalent complex ironobtained by means of the reaction is centrifuged, the divalent complex iron is conveyed to an electrochemical regeneration device by means of a regenerative feed pump so as to complete the regeneration, and the regenerated trivalent complex iron catalyst is returned to the re-reactor by means of a circulation pump. The natural gas desulfurization process is simple in technological process, smallin equipment size and compact in structure, and adapts to the condition limit of limited production space of offshore floating liquefied natural gas (FLNG).

A deepwater windpower plant (DWP) has a tension leg-type floating platform with an evacuable base for adjusting its buoyancy for installation at ocean depths ranging from 40 meters up to 1.5 kilometers and more. The DWP has a typical offshore wind turbine assembled close to shore which is then towed to a desired installation site on the ocean, and held in place by a gravity anchoring base (GAB), to which an evacuable portion or space of the DWP platform is anchored. The GAB has upwardly extending mooring tethers and a power cable which are brought to the ocean surface by attached buoys. The GAB is sunk to the ocean floor at the installation site under controlled conditions so that the GAB lands flat on the ocean floor. As the GAB sinks to the ocean floor, the mooring tethers and power cable are pulled to the surface by their respective buoys. The GAB is loaded with heavy ballast material that can be dropped from barges on the ocean surface into the upwardly open GAB below the barges.

A machine and a process to produce compressed air by sea waves, using the weight of the floating platform with its fixture using its up and down movement to compress air in both directions to absorb the maximum energy of that wave in a direct drive bidirectional pump with a single piston wherein the kinetic energy and wave bouncy force is used to compress ambient air as stored energy. This unique arrangement doubles air volume for compression in both directions in any single wave curve, doubles the energy production in both upper and lower chambers of the pump and multiplies the “psi” based on the float thrust area against the size of the piston in the pump. The preferred embodiment can be used as a stand alone unit as well as in array formation for the desired output 24/7.

A machine tool for machining and testing the non-spherical optical part features that its main body has the symmetrical gantry frame structure with X, Y, Z and C axises designed modularly, the milling head or polishing mechanism is installed to the Z-axis bench, and the floating platform equipped with the in-line measuring and error-measuring unit for plane and parallel to Y axis is arranged on main body. Its advantage is high machining precision.

Subsea wells are drilled and completed with an offshore floating platform in a manner that allows simultaneous work on more than one well. A first well is drilled and cased. Then a tubing hanger is run through a drilling riser and landed in the wellhead housing. Then, with the same floating platform, the drilling riser is disconnected and moved to a second well. While performing operations on the second well, the operator lowers a production tree from the floating platform on a lift line, and connects it to the first wellhead housing. An ROV assisted subsea plug removal tool is used for plug removal and setting operations. Seabed separation is configured upstream of a production choke valve.

Aspects of an embodiment of a check valve turbine assembly include a rotation platform having an axis of rotation, a vertical member concentrically secured to the rotation platform about the axis of rotation, a rotatable sail assembly attached to the vertical member that includes a frame, a hinge beam, and a rotatable sub-sail assembly. The sub-sail assembly includes a stem beam, a sub-sail grid frame attached to the stem beam, and a plurality of flaps rotatably attached to the sub-sail grid frame and configured to move between a closed position and an open position relative to the sub frame. Aspects of a marine check valve turbine include a free-floating platform structure configured with an upper surface at or near a water surface and a vertical member secured to the platform structure about an axis of rotation and configured to extend from the upper surface of the platform structure.

The invention discloses a fully automatic mobile hydraulic lifting platform machine. The machine comprises a chassis, a travelling drive device, a lifting device, hydraulic and electrically controlled systems and a charging device, wherein the lower surface of the chassis is provided with wheels, the travelling drive device and a braking device, the lifting device, the hydraulic system, a steering system, a operation system, a control system, the charging device and a foot device are arranged on the chassis, the chassis and a platform are provided with a safety device and a measurement system, and the lifting device is provided with a floating platform device. The machine of the invention can bear the rated weight according to the demand; and the travelling mechanism thereof can realize forth-back travelling and left-right travelling, 90 degrees of translation and crab motion, and the lifting platform device can move longitudinally and transversely, rotates and go up and down freely. Owning to various movement choices, the degrees of mechanization and automation are high, and the machine can change according to different conditions and accurately and timely position the installation position of the chassis, thus increasing the efficiency, ensuring the satisfy and satisfying the demand of the railway vehicle manufacture and assembly production line.

A method and system of operating a landing string utilized on a floating platform. The landing string is disposed within a marine riser, with the marine riser being connected to a subsea production tree, and wherein the subsea production tree contains internal conduits communicating controls through a series of stab passageways. The method comprises providing a tubing hanger operatively connected to the landing string, delivering hydraulic or electrical controls from the floating platform through a control system umbilical to a junction plate operatively attached to the subsea production tree. The method further comprises landing the tubing hanger into the subsea production tree, establishing control of the tubing hanger by providing the hydraulic controls to the tubing hanger with the series of stab passageways through the subsea production tree, and establishing control of the completion bottom hole assembly with the stab passageways. In the preferred embodiment, the landing string has attached thereto a completion bottom hole assembly that will be placed in the well.

An open-air filtration device cleans swimming pools and hot tubs in an efficient, reliable manner. An open-air filter with a suction chamber unit comprises two scrubbing brushes and an impeller powered by a motor drive. Water containing debris is pumped to a level above the swimming pool or hot tub surface. The debris containing water is discharged through a spout into a filter tube. A filter element associated with the filter tube, and open to atmosphere filters the debris containing water by gravitational forces solely. The spout and filter tube are, optionally, attached to a pole that manually propels the suction unit. They may alternatively be attached to a floating platform that floats on the water surface of the pool or hot tub. If filter efficiency decreases, the water level in the filter tube rises, indicating that the filter element must be replaced. A rise in water level is visually observed or detected automatically and communicated using a visible or audible alarm.

A floating type wave power generation system is characterized in that the system consists of eight sets of lever-type floating bodies and a hydraulic energy accumulation converter with the hydraulic pump function. On a floating workbench 7, eight sets of levers 2 and a floating body 1 are connected through supporting hinge bearers 10 and 11; in this way, the highly undulating displacement caused by waves can be converted to relatively lesser displacement of a piston rod 4, and the minor force that the floating body bears can be converted through the lever to the major force on the piston rod. The piston rod drives a hydraulic tank 3 to switch and transmit the hydraulic energy through a connecting oil pipe5, a high-pressure oil pipe6, a hydraulic oil tank and four no-return valves of each set to a hydraulic motor in a hydraulic power generation control chamber 9; in this way the generator is driven to work. The present system can absorb, convert and accumulate the intermittent unstable wave energy in a highly effective way and can buffer the destructive effect of waves. The floating platform can be suitable to different marine space by adjusting the length of an anchor chain 8. And in various sea conditions, kinetic energy and potential energy possessed by waves in the sea surface can be converted and accumulated as hydraulic mechanical energy by utilization of the wave drop; thus the generator is driven to unremittingly provide electric power.

Disclosed are compliant variable tension risers (106) to connect deep-water subsea wellheads (102) to a single floating platform (104) in wet tree or dry try systems. The variable tension risers (106) allow several subsea wellheads (102), in water depths from 1220 to 3050 meters, at lateral offsets from one-tenth to twice the depth or more, to tie back to a single floating platform (104). Also disclosed are methods to counter buoyancy and install variable tension risers using a weighted chain ballast line (228, 230).

The invention discloses a distributed spacecraft ground simulation system and a method for realizing same, belonging to the technical field of space flight and aviation. The invention aims at solving the problems that the configuration of the simulation platform of a prior distributed spacecraft is solidified and the expandability is bad. The invention adopts a one-dimensional rotational base air floated platform which is based on a plane two-dimensional parallel motion and is perpendicular to a parallel motion plane. By configuring a cooling air thrustor and a counteractive flywheel as an executing mechanism and configuring a high-precision optical fibre gyro, an x-axle accelerometer and a Y-axle accelerometer as a sensing component, the definition of a high-precision relative position and the standardization of an initiate posture can be realized by a high-precision local GPS positioning system, and other hardware systems can be configured according to different tasks, thereby forming a multi-spacecraft ground simulation system. The invention can realize the ground simulation multi-spacecraft system by configuring different practical hardwares or simulators according to the task of the spacecraft, thereby having strong expansion capability and applicability.

A tensioner system for a top-tensioned riser in a floating platform includes a hydro-pneumatic tensioner assembly resiliently mounted to the floating platform, and a riser support conductor surrounding the riser coaxially, wherein the support conductor conveys a pull-type tensional force from the hydro-pneumatic tensioner assembly to the riser through a riser conductor coupling assembly that engages the tensioner assembly and the riser support conductor to convey the tensional force. A riser tension joint support assembly conveys the tensional force from the riser support conductor to a riser tension joint on the riser. The tensioner assembly compensates for relative platform motion including pitch, heave, and yaw. Also a reactive load assembly is mounted to the platform and reacts to a two-point dynamic bending moment imposed on the riser support conductor, while resisting riser support conductor rotation.

A portable battery-powered ozone generator, or ozonator, contained in a waterproof housing with an air intake and an ozone discharge conduit diffuses ozone directly into a body of water in a pool, pond or tank. The ozone generator and housing can be part of (1) a buoyant floating platform that is also equipped with solar power collector panels to provide a recharging current for the battery; (2) a robotic, self-propelled pool cleaner; or (3) a skimmer filter assembly that can include a solar panel under a solar transmissive cover that is flush mounted in the walk area alongside the pool.

A riser tensioner system maintains a tensile force in a riser having an axis and extending from a subsea wellhead assembly through an opening in a floating platform deck. The tensioner includes a plurality of tensioner legs having lower ends mounted to the deck, and upper ends having slots formed therein to receive leg attachment plates having an opening therein through which a tubular support ring passes. A plurality of cylinders extend between the tubular support ring and a tensioner ring and couple to the support ring with cylinder attachment plates through which the tubular support ring passes. An upper end of each cylinder pivots about the mounting point, and a lower end of each cylinder adjustably mounts to the tensioner ring.

An apparatus for use in offshore oil or gas production in which a plurality of vertical stabilizing columns are supported on a submerged horizontal water entrapment plate is provided to support minimum offshore oil and gas production facilities above a subsea wellhead, or subsea processing facilities, or a submarine pipeline, and whose main function is to provide power or chemicals or to perform other operations such as compression, injection, or separation of water, oil and gas. The apparatus is maintained in the desired location by a plurality of mooring lines anchored to the sea-bed. The respective size and shape of the columns and water entrapment plate are designed to provide sufficient buoyancy to carry the weight of all equipment on the minimum floating platform and mooring lines, umbilical and risers attached to it, and to minimize the platform motion during normal operations.

The invention relates to a power station on a submerged floating platform consisting of a floating structure (1) submerged at a certain depth, where it is moored by means of guy lines (2) with respect to ballasts or mooring buoys (3) located in the aquatic bed, arranging on said floating structure (1) hydraulic pumping mechanisms (5) which are operated by the weight differential of the water column between the crests and the troughs of the waves when such waves pass over them, in combination with a pneumatic system acting as a spring in said mechanisms (5) for operating an electricity-generating turbine (8) through a hydraulic closed circuit.

The invention discloses a sea observation platform for unmanned and automatic navigation. According to upward and downward movement of a water turbine which is arranged under sea and is pulled by a sea floating platform driven by wave, water flow entering into a water turbine casing is enabled to be guided by upper part guide blades and lower part guide blades to act on a one-way rotating rotor, the up and down movement is converted into one-way rotation of the rotor, by the adoption of the rotor, according to a transmission mechanism, and kinetic energy of rotation is transmitted into the rotor of a generation set which is accelerated by a speed shifting mechanism, so that sea wave energy is enabled to be converted into electrical energy; and a power supply system further comprises a solar photovoltaic system, the electrical energy generated by the solar photovoltaic system is taken as an auxiliary power supply for an observation platform, the electric energy converted from the sea wave energy is used as a main power supply for various systems, and a complemented method of the main power supply and the auxiliary power supply is used for providing power source for a propelling system and an intelligent control system. By providing adequate electric energy, the sea observation platform becomes the observation platform with functions of remote control, multi-method communication, visualized remote online monitoring and observing and the like, and the possibility of transparently supervising all sea observation stations in the country is realized.

A tieback connector connects a riser between a subsea wellhead housing and a floating platform. The tieback connector has a tubular body that stabs into and seals with a casing hanger. A latch member on the tieback connector engages a locking profile to secure the tieback connector to the wellhead housing. A sleeve is slidably carried on the tubular body between a running-in position and a set position. The lower end of the sleeve lands on an upper rim of the casing hanger prior to the seal engaging the seal surface. Continued downward movement of the tubular body relative to the sleeve causes the seal to engage the seal surface and the sleeve to move to the set position. The sleeve has upper end that engages a lower end of the latch member to limit any upward movement of the casing hanger in the wellhead housing.

The floating platform of the invention is intended for supporting industrial, commercial, cultural, and dwelling structures and is suitable for deployment in shallow as well as in deep waters, The platform is assembled from prefabricated hollow structural elements in such a way that the unified center of masses of the loads that consist of a plurality of arbitrarily distributed loads of different masses supported by the platform is always maintained in the same position whereby the platform is always maintained in a horizontally counterbalanced position. This is achieved by locally adjusting the buoyancy of the structural elements. Furthermore, the loads are positioned on the platform so that moments created by these loads relative to the aforementioned unified center of masses are equal. This allows maintaining the loads on the platform in equilibrium.

In order to solve the technical problems of difficulties in coverage and intensive monitoring to obtain accurate dynamic data, the invention provides an air/space/boat/buoy/island-reef based waters multi-sensor integrated monitoring system. In this system, the satellite SAR image passive positioning is used, an unmanned aerial vehicle (UAV) adopts a radar/image/ultrasound and other multi-sensor dedicated monitoring pod, an unmanned boat adopts a search radar/image/ultrasound/laser integrated monitoring system, the island-reef base and shore base adopt an ADS-B/AIS/radar/panoramic image/tracking image/ultrasonic/laser integrated monitoring system, a buoy/floating platform adopts a hemispherical panoramic image/laser system, an underwater vehicle adopts a multi-channel infrared CCD/ultrasonic and sonar monitoring system, a comprehensive analysis system is established at the background to obtain illegal, air and sea non-cooperation objectives on island reefs and offshore structures and comprehensive marine environmental information, and the technical problems of difficulties in coverage and intensive monitoring to obtain accurate dynamic data monitoring are solved.

An offshore floating platform having at least one buoyant column with an upper end extending above a sea surface, a lower end submerged below the sea surface, and at least one keel tank disposed at the lower end. A deck is supported at the upper end the column. An ocean thermal energy conversion (OTEC) system is integrated with the platform in which heat is extracted from warm sea surface waters to vaporize a liquid working fluid and heat is rejected to cold water from lower depths of the sea to condense the vaporized working fluid. At least one turbine and power generator is disposed on the deck, at least one evaporator is disposed on the platform beneath the deck, and at least one condenser is disposed on the seabed or platform or keel tank a distance beneath the evaporator.

The invention discloses a space on-orbit fault removing operation ground simulation experiment system. The space on-orbit fault removing operation ground simulation experiment system comprises a simulation service spacecraft, a simulation target spacecraft, a microgravity simulation air-floating platform and a simulation ground control station. The simulation service spacecraft and the simulation target spacecraft operate on the microgravity simulation air-floating platform and communicate with the simulation ground control station through wireless communication. The simulation service spacecraft is used for simulating a spacecraft with on-orbit operation and service capabilities. The simulation target spacecraft is used for simulating a spacecraft with on-orbit faults. According to the space on-orbit fault removing operation ground simulation experiment system, on-orbit approach and on-orbit capture can be simulated, and an automatic control mode, a man-in-loop control mode and other various control modes are achieved.

A substrate handling robot having a robot body and a robot arm with an end effector is configured to exhibit angular (θ), radial (R) and Z motion. A pair of coaxial shafts link the robot arm to respective motors dedicated to angular (θ) and radial (R) motions. The motors are stationarily mounted with respect to the robot body. The shafts are rotatably supported by a floating platform which is motivated in the Z direction by a third motor also stationarily mounted with respect to the robot body. The third motor is coupled to the platform by a Z motion linkage. The first and second motors are coupled to the coaxial shafts by angular and radial motion linkages each of which includes primary and secondary timing belts whose relative motions are synchronized with the Z motion linkage to achieve controllable independent angular (θ), radial (R) and Z motions in a simple, light-weight package.

The invention provides an amphibian stable floating platform or a house based on reliable independent stability of a floating platform with a lower opening floating vessel. Particularly, the lower opening floating vessel 7 of the stable floating platform has the depth of 0.4m at least, and at least comprises three or more circles of annular floating vessels from the inside to the outside; the annular floating vessels at each circle are actually independent with each other and are not staggered, wherein independence with each other means that the floating vessels are not communicated directly in a floating state; the middle annular floating vessels 48 and external annular floating vessels 49 are at least provided with 6 subsections and actually independent floating vessels 7; and the annular floating vessels are alternately distributed by equidistant or approximately equidistant annular pins 3. The application comprises that the disaster reducing capability of a conventional amphibian house can be expanded by the stable diving function of the floating body, and a conceptual disaster reduction house comprehensively relates to the blank disaster reduction field of physical natural disaster; the self-subside defect when a ground pillar is rammed for a house can be passingly solved; and the popularity of the amphibian variable house can be passingly fulfilled.

The invention provides an integrated system of a floating offshore wind generator and a deepwater aquaculture net cage, and belongs to the technical field of marine renewable energy and aquaculture engineering. The integrated system comprises a wind generation system, a floating deepwater aquaculture system and an anchoring chain system, wherein the wind generation system comprises wind generators and a semi-submersible offshore floating platform; the semi-submersible offshore floating platform comprises an upper floating body, circular vertical columns and a lower floating body; the upper floating body and the lower floating body are of circular ring structures and are connected through three circular vertical columns; three wind generators are circumferentially uniformly distributed on the upper floating body; the floating deepwater aquaculture system comprises a closed circular net cage and pressing blocks; the upper part of the closed circular net cage is fixed to the bottom part of the lower floating body, and the lower part of the closed circular net cage is circumferentially uniformly provided with the pressing blocks; the wind generators of the wind generation system are used for supplying power to the floating deepwater aquaculture system; the anchoring chain system is an anchoring chain; one end of the anchoring chain is fixed to the lower floating body, and the other end of the anchoring chain is connected to a seabed, so that the lower floating body is connected to the seabed.

A check valve turbine assembly includes an assembly base, a vertical member rotatable relative to the base, and a sail assembly attached to the vertical member, wherein the sail assembly has a frame with parallel horizontal airfoil members and parallel vertical airfoil members, a sub frame connected to the horizontal and vertical airfoil members, and a plurality of flaps rotatably attached to the sub frame. In another aspect of the disclosure a turbine assembly includes an assembly base, a vertical member rotatable relative to the base, and at least one flexible sail assembly attached to the vertical member. In another aspect of the disclosure, a turbine system includes a a floating platform, a generator, a gearbox connected to the generator; and a check valve turbine assembly that drives the gearbox. Another aspect of the disclosure includes a check valve assembly with a longitudinal center section and a wing section.

The invention provides a vertical shaft tidal current generating set. The vertical shaft tidal current generating set comprises three modules, namely an upper layer platform part, a supporting frame part and an impeller part, wherein the upper layer platform part mainly comprises a generator, a gear box, a horizontal connecting shaft, a supporting platform, a supporting column and a vertical connecting shaft; the supporting frame part is formed by connecting an upper frame plate, a lower frame plate, a left frame plate and a right frame plate; and the impeller part comprises a main shaft, a spoke sleeve, a spoke, a spoke shaft, a blade, a blade shaft, a wheel disk and an adaptive attack angle control device. The invention provides the high-performance vertical shaft tidal current generating set, which has high starting and generating performances and high structural strength, can be developed towards large-scale direction, can be used below a floating platform and above a pile base and a tension leg, is convenient to produce, manufacture, install and debug, and is suitable for engineering application.

The invention relates to a gang offshore floating platform, which diffuses several elongates float bowl on the water and fixes them with hack lever structure with integrated rigidity. The invention can be used as one basic structure of large and hype-large floaters, after the box and semi-sink platform. The invention can solve the problems of large load and lower rigidity of box type and high weigh, cost and deep draft of semi-sink type. The invention also provides a new floating concept of dynamic semi-sink small waterline area. And it has simple structure, lower weight, lower draft, stability, and the ability to reduce the load of wave and wind, avoid the limit of sea depth with lower cost and wider application of offshore exploitation.