244 results about "Marine terrace" patented technology

The invention provides a novel anti-skidding coating for a deck, which is composed of the following components in parts by weight: 30-45 parts of latex, 2-5 parts of film forming accessory ingredient, 15-25 parts of titanium pigment, 5-20 parts of filler, 0.2-1.0 part of wetting dispersant, 5-15 parts of anti-skidding agent, 0.1-0.5 part of de-foaming agent, 0.5-1.0 part of age inhibitor, 0.5-2.0 parts of thickening agent, 0.5-1.0 part of anti-mildew corrosion-protection agent, and 10-25 parts of water. The coating of the invention has very high wearing resistance and anti-skidding degree; the formed coat has good adhesive ability, wearing resistance, weather resistance, light-proof aging resistance, seawater resistance and salt mist resistance, wherein the artificial weathering aging test (ultraviolet UVB-313 resistance) is 4000 h, and the wearing resistance (1000g/1000r) is not more than 30mg; the coating is applied to the corrosion prevention of the decks and the iron surfaces of the sea apparatus of boats and ocean platforms, wherein the decks and the iron surfaces require to have weather resistance, anti-skidding property, wearing resistance, and seawater corrosion resistance. The preparation method of the anti-skidding coating for the deck is simple in technology, low in cost and is performed without special apparatus.

An automatic control method for lifting an ocean platform is disclosed, and comprises the steps that an electronic level meter detects the inclined angle of the platform and inputting the inclined angle to a main controller; the main controller corrects the inclination data of the platform according to predetermined coefficients Kx and Ky; a linkage operating handle inputs the handle speed command Vo to the main controller and the main controller applies PID (Proportion Integration Differentiation) algorithm to acquire the leg running speed Vout and inputting the Vout to a speed control valve; the speed control valve controls a hydraulic motor to control the leg to run according to the speed command till the platform is lifted. The invention further discloses an automatic control device for lifting an ocean platform. The electric level meter is connected on the platform. The output end of the electric level meter is connected with the input end of the main controller and the output end of the main controller is connected with the speed control valve of each leg. The automatic control method and device for lifting an ocean platform control the leg to life synchronously and maintainthe platform by adopting closed-loop control of platform gesture, and are simple to operate and have high safety.

The invention discloses a step-flow deep sea vertical pipe array model vortex-induced vibration test device capable of considering top movement influences, belonging to the technical field of ocean engineering. The device comprise a plurality of deep sea vertical pipe modules, a top support module, a bottom support module, two vertical track modules, a horizontal track module, four fairing modules, a sleeve module, four motor modules and a measurement analysis control module. The test device disclosed by the invention can be provided with a large-size vertical pipe module, so as to avoid the size effect; by utilizing the test device disclosed by the invention, the vertical track modules and the horizontal module are fully used for simulating vortex-induced vibration of a large-size vertical model under the influence of an ocean platform; and the test device can be used for simulating different arrays formed by the deep sea vertical pipe modules according to the actual requirements. The sleeve is arranged outside the vertical pipe model, vertical pipes in the sleeve are not influenced by water flow during the test, and simulation of a step flow can be realized, thus the simulated external environment of the vertical pipe model is truer; and the modular design is adopted in the test device, thus the test device is convenient to mount and dismount.

The invention discloses a self-lifting type multifunctional ocean platform and a work method thereof and belongs to the technical field of marine transportation and ocean engineering technology. The multiple functions of the platform are combined to realize well drilling, well repairing, household self-holding and small-scale drilling. The self-lifting type multifunctional ocean platform mainly comprises a platform upper-layer deck, a machinery deck, cylindrical pile legs, a crane, pile shoes, a helicopter deck, a fore body lateral pushing part, a derrick, a tail thruster, pile shoe containing zones, a pile driver slideway, an LNG tank body, a pile driver, a main machine and the like. The self-lifting type multifunctional ocean platform meets the existing ocean engineering development requirement, achieves various operations such as ocean platform well drilling, well repairing, household self-holding and small-scale drilling, has the all-weather operation capability and long self-holding capability and adopts a cantilever drilling mode and advanced pile leg lifting equipment, drilling equipment and generating equipment. The self-lifting type multifunctional ocean platform is higher in integration capacity, has the well drilling, well repairing and small-scale drilling capacities, has a broad deck space, is provided with a natural gas collecting and compression treatment device and a corresponding power system, and is economical, efficient and high in engineering applicability.

The invention discloses a hybrid mooring system for ultra-deepwater floating structures and a mooring method in the field of marine engineering oil and gas development. The mooring method includes: recording a motion response value of an ocean platform in real time by a GPS (global position system), when the motion response value is lower than a preset reasonable response value, judging the current ocean condition to be the ordinary ocean condition, and otherwise the limit ocean condition; when in the limit ocean condition, straining a tension-type mooring line, and transmitting tension A on a catenary-type mooring line and tension B on the tension-type mooring line to a control module by a second tension sensor and a first tension sensor respectively; calculating a value C through a formula by the control module, if the value C is smaller than a preset reasonable difference, keeping the tension-type mooring line constant in length, otherwise comparing the tension A with the tension B, if A is smaller than B, loosening the tension-type mooring line in length, and if A is larger than B, shrinking the tension-type mooring line in length. By the mooring method, intelligent switching between a single set of catenary-type mooring line system and the hybrid mooring system can be automatically completed, and the mooring method is simple and convenient and rapid.

The present invention relates to the measuring method and device of sea wave load. The measurement includes the following steps: suspending one rigid cylinder around one marine platform casing; setting at least two dynamometric sensors between the rigid cylinder and the casing in proper axial positions; detecting the force of sea wave on the rigid cylinder with the dynamometric sensors and transmitting the measured data to available data processor for processing. The suspended sea wave load measuring device includes rigid cylinder, dynamometric sensors and connectors. The cylinder is connected to casing to fix the axial position via steel bar, steel wire or other flexible connectors without radial position constraint, so the present invention has simple structure. The present invention adopts marketable dynamometric sensors and thus has the advantages of high reliability, easy installation, etc.

The invention discloses a multifunctional pile leg applicable to an ocean platform. The multifunctional pile leg comprises a pile leg main body and a pile shoe. The pile shoe is a sealed hollow shell.The bottom of the pile leg main body is connected with the top of the pile shoe. The multifunctional pile leg further comprises a jetting mechanism and a seawater lifting device. The jetting mechanism comprises an upper jetting unit and a lower jetting unit which are mutually independent. A water conveying pipe is vertically arranged between an upper conveying pipe and a lower conveying pipe. Thewheel face of a guide pipe pulley abuts against the upper conveying pipe or the lower conveying pipe. A rope coiling device pulls the water conveying pipe to slide up and down along a gap between theupper conveying pipe and the lower conveying pipe through a guide pipe pulley mechanism. The seawater lifting device is arranged on a truss of the pile leg main body. The water conveying pipe is controlled to ascend and descend in the truss of the pile leg main body through the rope coiling device mounted on the ocean platform so that seawater can be extracted rapid; and the jetting mechanism isarranged for assisting in pulling out the pile shoe, and rapid pull-out of the pile shoe is achieved.

The invention discloses a special mounting and construction method for seabed fixation of an offshore platform in a soft soil layer sea area; and in a thick soft soil environment, a soft soil layer cannot be totally dug away. The method comprises the following steps: a large-diameter steel cylinder is beaten into the soft soil layer as a temporary or permanent support of a buoyancy cylinder; the buoyancy cylinder is accurately supported on the steel cylinder according to a preset plane and a vertical position; then, the piling is performed to produce a platform on piles; or the steel cylinder is used as a cofferdam, soft soil in the cylinder is replaced or modified to bear the load of the platform; the load is carried to a force holding layer at the seabed; and a straight cone at the bottom of the buoyancy cylinder and a concrete bed reverse cone prepared at the seabed are coupled to solve the position adjusting problem of the platform. The offshore platform and the mounting and construction method thereof can be applied to natural geological environments of all offshore areas; compared with the land reclamation, the method less destroys the environmental ecology; and compared with a steel floating platform, the offshore platform has more prominent economic benefit.

The invention provides a 47kg grade steel plate used on an ocean engineering platform and a production method thereof. According to the invention, low carbon content design is adopted, the alloying elements of Mn, Cr, Ni, Mo, V and Cu are added for micro alloy element intensification, the rolling technique of controlled rolling and controlled cooling is adopted, and finally a lath-shaped bainite and ferritic structure is obtained. Tests show that the steel plate provided by the invention has the yield strength of 480MPa, totally reaching the requirement of a 47kg grade, the tensile strength of the steel plate is 630MPa, and the elongation is 27.5%; the impacting energy of the steel plate is 284J under 40 DEG C below zero and is 290J under 60 DEG C below zero; and the low-temperature toughness of the steel plate is guaranteed. The 47kg grade steel plate can satisfy the requirement of operation of the ocean platform under low-temperature aquatic environment and thereby solves the problem of lower strength of steel used in ocean engineering.

The invention discloses an intertidal zone simple ocean platform and a construction method thereof. The intertidal zone simple ocean platform comprises a lower pile-barrel combination foundation and an upper platform block. The lower pile-barrel combination foundation comprises four barrel-shaped foundation bodies, the four barrel-shaped foundation bodies are opposite in pairs and distributed at intervals, every two of the four barrel-shaped foundation bodies are connected with each other to form a whole, the upper portion of the outer wall of each barrel-shaped foundation body is provided with a sleeve, and the top of each barrel-shaped foundation body is provided with a positioning pillar and a water feeding/discharging valve; the upper platform block is formed by welding four stand columns to an upper-end platform plate of the upper platform block, and the lower portions of the outer walls of the four stand columns are provided with sleeving pipes matched with the positioning pillars; and when the lower pile-barrel combination foundation and the upper platform block are assembled, the four sleeving pipes of the upper platform block sleeve and fix the four positioning pillars of the lower barrel-shaped foundation bodies. The intertidal zone simple ocean platform is large in foundation rigidity, the perpendicularity of the barrel-shaped foundation bodies automatically meet requirements, the weight of each independent component is small, construction is easy and convenient, the barrel-shaped foundation bodies penetrate into a seabed with the help of the seawater weight, and the intertidal zone simple ocean platform has economy and practicability.

The invention relates to a sea platform uplift reducer bearing clearance adjusting method and a special tool therefor. One of two bearings at both ends of a shaft of a reducer is a limit bearing A, the other one B is not a limit bearing; a compacting part of the adopted special tool extends into a bearing mounting hole; the compacting part is made to cling closely to an outer ring side face of the bearing B through manual rotation; axial clearance is eliminated by using a torque wrench to rotate the compacting part; a corresponding bearing cover of a reducer housing is made after calculation based on axial clearance values of various positions. The special tool comprises an axial clearance adjustment cover, wherein a connecting hole is arranged on the axial clearance adjustment cover; the compacting part is connected through an internal thread hole in the center of the axial clearance adjustment cover; and one end portion of the compacting part is arranged with a screw nut used for connecting with the torque wrench. According to the method provided by the invention, axial clearance of the reducer installed with the method has high precision; precision has good stability; service life of the reducer shaft components is prolonged; maintenance frequency is reduced; and use cost is reduced.

The invention discloses a heat treatment process capable of improving NDT performance of steel for an F-grade ultrahigh-strength ocean platform. The heat treatment process comprises an online quenching step, a high-temperature subcritical quenching step and a tempering heat treatment step, wherein in the online quenching step, a temperature is Ac3+(50-100) DEG C, and uniform and fine lath martensite structures are obtained; Ac3 is a temperature for completely converting ferrites to austenites during hypoeutectoid steel heating; with regard to the lath martensite structures formed by the online quenching in the invention, a small amount of undissolved ferrites is left at austenite crystals during the high-temperature subcritical quenching, and due to the existence of the ferrites, the growth of the austenite crystal grains can be effectively inhibited and a role of refining the austenite crystal grains is played; after quenching, close lath martensites, a small amount of fine ferrite structures distributed along the crystal boundaries of the austenites, and trace amounts of austenite structures left among the lamella of the martensites are obtained; during tempering, the martensite laths are softened, supersaturated carbon atoms are separated out, and the ferrite matrixes are recovered and recrystallized; and the fine lath martensite structures can still ensure a high strength after the tempering.

The invention discloses a seawater lifting device arranged in a spud leg. The seawater lifting device comprises a seawater lifting pump and a water delivery pipe. The seawater lifting pump is installed at the bottom end of the water delivery pipe and communicates with the water delivery pipe, the water delivery pipe is perpendicularly installed in the spud leg of an ocean platform, two guiding pipes are close to the two sides of the water delivery pipe correspondingly and arranged in a truss of the spud leg, and the two ends of each guiding pipe are fixedly installed on the spud leg. A bulky lifting frame and a complex lifting driving mechanism are not needed, seawater extraction can further be achieved, the length of the water delivery pipe does not need to be larger than the height difference between the ocean platform and the sea level, the water delivery pipe is dropped into sea by adjusting the down-pass length of a tow rope, material consumption is reduced, and the production cost and the production difficulty are reduced; lifting can be controlled only through a rope collecting machine, operation is simple, energy consumption is low, and the using cost is reduced; and the seawater lifting device is arranged in the spud leg, a lifting channel does not need to be additionally arranged on the ocean platform, and less space is occupied.

The invention discloses a modular offshore floating type wind-solar hybrid power generation and storage platform which is characterized in that the platform comprises a full-floating type offshore floating type platform of a modular space truss structure, and the full-floating type offshore floating type platform comprises a deck platform, a plurality of stand columns and a buoyancy main body which are sequentially arranged in the vertical direction from top to bottom; the buoyancy of the buoyancy main body is realized by adjusting the buoyancy of at least part of buoyancy adjustable points inthe buoyancy main body; the wind-solar complementary assembly on the platform comprises a vertical-axis wind power generation device, a solar power generation device, an energy storage device and a seawater cooling device, and most of the components are arranged in a deck platform with a hollow conical interlayer. Modularized construction and expansion are adopted for the main body, the two prominent problems of stormy wave resistance and benefit generation in ocean platforms for deep sea cultivation and the like are solved, a comprehensive power generation system for solar power generation and vertical-axis wind power generation is constructed on the platform, and the problems of storage, heat dissipation, maintenance, guarantee and the like are solved; and a perfect power supply solution can be provided for other ocean platforms.

A stepped anti-subsidence leg of an ocean platform includes a leg, a ribbed plate, a stepped ring, transition sections and circular metal rings, the ribbed plate is welded between the leg and the stepped ring to remit stress concentration; the stepped ring is composed of a plurality of superposed steel tubes having different external diameters, a connection part between each two steel tube is provided with the transition section, and the transition section externally includes an inclined circular metal ring; pipe diameters of corresponding stepped sections are determined according to conditions of a surface foundation under a seabed soil level while mounting the leg, the stepped ring is hit to be sunken at 0.5-2.5m depth of the seabed soil level in a construction period of the leg in the seabed, so that an aim of anti-subsidence is implemented, simultaneously, depth of the leg sunken in the seabed also can be reduced about 1/3; fillers are placed at the connection part of the transition sections when it is necessary to hit the leg on the spot, and the fillers are externally covered with the inclined circular metal ring to bear loads.

The invention belongs to the technical field of ocean resource development and utilization, and relates to a wave power generation device, in particular to a wave power generation device capable of harvesting energy by utilizing a free pendulum. The wave power generation device is mounted on a moving or fixed ocean platform, and comprises the following three parts which are connected in sequence:a wave energy harvesting system, an energy transmission system and an energy output conversion system, wherein the wave energy harvesting system is used for harvesting wave energy and converting the harvested wave energy into mechanical energy; the energy transmission system is used for flexibly and unidirectionally transmitting reciprocating mechanical motion to the energy output conversion system; and the energy output conversion system is used for converting the transmitted mechanical energy into electric energy. The wave power generation device capable of harvesting energy by utilizing thefree pendulum has the beneficial effects that not only can wave energy of different wave directions be efficiently harvested, but also the constant value of wave energy can be converted into electricenergy output; the whole system is high in energy utilization ratio, easy to maintain, and steady in electric energy output; and the wave power generation device can be applied to various ocean platforms for power generation.

The present invention relates to the foil gage insulating method and device under deep sea condition. In the bottom edge of one thin metal hood comprising hood top and hood edge, one ring of brazingagent and soft brazing alloy in the same shape as that painted around the foil gage, and the hood has wire leading port in the top and bottom edge shape adaptive with the marine platform casing. after the thin metal hood covers onto the casing wall with adhered foil gage, the hood edge and the casing are brazed fast via heating. After the lead connected to the foil gage passes through the port,the port is sealed with high pressure sealing joint. Owing to the relatively low smelting point of the soft brazing alloy, the painting and brazing process has no influence on the mechanical performance of the casing wall and accurate measurement.

The invention discloses a steel plate for a thick-gauge high-toughness EH36-level ocean platform and a manufacturing method. The manufacturing method comprises the steps of heating of a plate blank, and rolling, cooling and heat treatment of the steel plate. A finished plate blank is composed of, by weight, 0.15%-0.18% of C, 0.30%-0.50% of Si, 1.4%-1.6% of Mn, 0-0.015% of P, 0-0.005% of S, greater than or equal to 0.020% of Alt, 0.030%-0.050% of Nb, 0.030%-0.050% of V, 0.008%-0.020% of Ti, 0.15%-0.30% of Ni, 0.0010%-0.0020% of La, and the balance Fe and impurities. The content of the Ni is low and the trace rare earth element La is added to serve as an alloying design for improving the strength and toughness of the steel plate; a normalizing heat treatment technique is adopted after controlled rolling and cooling, and accordingly the steel plate for the high-strength high-toughness thick-gauge ocean platform is obtained.

The ice force measuring device includes one cylinder with certain flexibility and one strain sensors. The cylinder is mounted onto the casing of marine platform, and can slide up and down along the casing without vertical constraint force. In the inside wall of the cylinder, there are the strain sensors adhered densely in the circumferential and longitudinal directions. Between the cylinder and the casing, soft silicone gel is filled. On two ends of the cylinder, some floating material is installed for the cylinder to float in marine. The cylinder structure can maintain the original geometrical shape of the casing at most and reduce the change caused by the change in geometrical shape of the ice load in the ice facing direction, so that the present invention has the advantages of direct measurement and indirect inversion.

The invention discloses a marine equipment underwater cleaning device which comprises a machine body, a mechanical arm, a cleaner, positioning clamping arms, electric crawler belts and cleaning discs.The mechanical arm is installed at the top of the machine body, the cleaner is installed at the tail end of the mechanical arm, and the two transverse opposite sides of the machine body are symmetrically provided with one set of the positioning clamping arms. Two electric crawler belts are sequentially arranged on each of two opposite transverse sides of the machine body at a distance, each set comprises two positioning clamping arms arranged at a distance, and the multiple cleaning discs are installed at the bottom of the machine body. The invention further discloses a cleaning control method of the device. The device meets the requirements of ship body surface cleaning and cleaning operation modes of ocean platform jackets, submarine pipelines and breeding nettings, and is high in universality, wide in application range and capable of saving cost; potential safety hazards brought to the device body due to uncontrollable underwater ocean current disturbance and other unpredictable potential risks are avoided, and the operation stability and the operation range are improved; and cleaning of all corners is guaranteed, the cleaning efficiency is high, and cleanliness is high.

The invention discloses marine climate resistant high-strength coating which comprises the following components of acrylic resin, polyether polyol, nano-silica, a hydrophilic acrylate dispersing agent, a polyether modified siloxane foam breaking agent, a composite mildewproof and bactericidal agent, a polyurethane thickening agent, a wetting agent, titanium dioxide, kaolinite, coarse whiting and deionized water. The coating has excellent adhesive force, wearing resistance, weather resistance, light aging resistance, sea water resistance and salt fog resistance, and can be used for corrosion protection of the surface of iron steel of decks, required to be weather-proof, anti-skid and wear-resistant, and seawater corrosion resistant, of ships, ocean platforms and the like and other marine facilities. According to the invention, a preparation method of the marine climate resistant high-strength coating is simple in technology, special equipment is not required, and the price is lower.

The invention discloses a wave self-adaptive ocean platform full-automatic gangway ladder device and an application method thereof.The wave self-adaptive ocean platform full-automatic gangway ladder device comprises a fixed ladder, an extension ladder, a driving system, a laser ranging system and a safety device, the extension ladder is arranged in the space between the fixed ladder and a ship board outer plate, the driving system is located on an ocean platform deck, and a noose wound on a winch is connected with the extension ladder; the laser ranging system is located at the bottom of the extension ladder, one end of the safety and protection device is connected with a deck of the ocean platform, the other end of the safety and protection device is connected with the extension ladder, and after a ship travels to one side of the ocean platform and is detected by the laser ranging system, the PLC control system controls the extension ladder to ascend and descend along with fluctuation of the ship according to the preset height. The height of the operator stepping on the folding pedal is always kept unchanged, and the operator is connected with the safety and protection device when climbing. The device has the advantages of being simple in structure, safe, reliable, low in cost and easy and convenient to operate, avoiding collision between the gangway ladder and a ship and collision between an operator and the ship, and avoiding falling of the operator in a quick state.

The invention discloses an anchor chain sensor fixture based on permanent magnetic chuck adsorption and applied to an ocean platform. The anchor chain sensor fixture comprises a loading-unloading handle (1), a hinge A (2), a hinge B (3), crank connecting rods A (4), hinges C (5), crank connecting rods B (6), a NdFeB-CoNiAl permanent magnetic chuck (7), a fixture frame (8), sensor fixing loops (9) and sensors (10). The anchor chain sensor fixture disclosed by the invention has the advantages that the mounting mode is simple and effective; the fixing effect is tight; the working requirements of the sensors are met; the mounting action is simple; and the underwater unmanned operation can be performed by an ROV.

It is an object of the present invention to provide a means of constructing an Autonomous fully-Submersible Offshore Marine Platform (ASOMP) of considerable warfighting or commercial capability which is mobile and can autonomously transport to a hazardous operating area in a low-observable reduced vulnerability manner, fully submerge to avoid the military or environmental threat hazard, hibernate until needed, perform fully submerged mobility and mission operations, surface and provide Barge and SWATH surface ship mobility and mission operations, resubmerge if the hazardous threat appears and relocate to a new operating area. Another object of the present invention is to provide a fully autonomous and submersible low-cost “lily-pad” that surfaces when called and provides a main deck platform at appropriate freeboard and seakeeping motions to function as a refueling landing zone and pier to extend the range of aircraft and marine vehicles operating in a high-threat environment.