337 results about "Lightering" patented technology

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.

Articulated tug and barge arrangements and methods for transportation, storage and regasification of liquefied natural gas (LNG) aboard barge units and for ballasting the barge units are provided. A barge unit includes a type C tank for the containment of LNG under pressure and a regasification unit fluidly coupled to the type C tank for regasification of LNG aboard the barge unit for offloading natural gas. The barge unit is adapted for loading LNG directly from a liquefaction plant, for transporting LNG by operatively coupling to a tug unit, as well as for storing LNG at a destined off board facility, and for fueling a floating power production facility. The arrangements and methods provide a transport terminal ring. The arrangements and methods provide for the circulation of seawater through the regasification unit and into ballast tanks for ballasting of the barge unit while offloading natural gas.

A portable marine lift capable of multi-directional off-loading of yachts, ships, and other marine vessels at ground level to dry-dock them. It is compact and barge-like, and can be shared by independent shipyards, or used to expand the work area within a single port facility or shipyard. It is also self-contained when fitted with generators and/or propulsion means via add-on pods, and comprises independent platform sections joined together to meet any hull design, length and water depth. Platform sections have the ability to submerge, and may also be employed to capture and temporarily contain environmentally hazardous materials commonly produced by shipyards. In addition, the platform sections are preferably open-framed for weight savings. Computerized lifting, via multiple lift modules secured to platform sections, assures lifting of vessels in substantially level orientation. Optionally, platform sections can be configured for shallow water operation, with locking devices, and/or guides usable for off-loading railway alignment.

The invention relates to a buoyancy type mounting method for an offshore boosting station, which aims to be safe and high-efficiency, save expense and have low requirements on ship machines and equipment. The technical scheme includes that the buoyancy type mounting method for the offshore boosting station is characterized by comprising steps of a, building the offshore boosting station on the land; b, sliding the offshore boosting station on a barge, conveying the offshore boosting station to a specified mounting position, judging whether the bottom of a support of the offshore boosting station is higher than the top end of a foundation or not, executing a step d if the bottom of the support of the offshore boosting station is higher than the top end of the foundation, and executing a step c if the bottom of the support of the offshore boosting station is not higher than the top end of the foundation; c, controlling the barge to ascend; d, leading the barge to move into a gap of the middle of the foundation and positioning the barge; e, controlling the barge to descend, placing the support of the offshore boosting station on the foundation, simultaneously, leading the barge to continue descending until the barge is separated from the offshore boosting station, and then dragging the barge out from the bottom of the offshore boosting station; and f, welding the support with the foundation. The buoyancy type mounting method is applicable to the field of offshore wind power generation.

The invention provides an installation equipment of an above-water wind generator and a construction method thereof, belonging to the technical field of above-water wind power generation, comprising a hoisting ship, a transportation barge, a hoisting machine, a hoisting ring, a telescopic floating cylinder, an inflation device, a supporting leg and a lifting device, wherein four supporting legs are fixedly arranged below the hoisting ship; the circumference of the hoisting ship is fixedly provided with a plurality of telescopic floating cylinders; the hoisting machine is fixedly arranged vertically right at the center of the upper deck of the hoisting ship; 2-10 hoisting rings are symmetrically and fixedly arranged at two sides of the hoisting machines on the upper deck of the hoisting ship respectively; the hoisting rings are connected with the back rods of the hoisting machine by wire ropes; and the circumference of the transportation barge is provided with the telescopic floating cylinders and the inflation device. The installation equipment can carry out the installation operation of the marine wind power generation towel pile foundations and fans within 0.3-5m of water depth, greatly improve the installation efficiency of the marine wind power generation towers and reduce the construction cost of the marine wind power generation fields.

The invention discloses three-dimensional general arrangement, loading and unloading process and system of an automatic container wharf. The container wharf comprises six parts: a seagoing vessel wharf, a lighter berth, a seagoing vessel wharf front edge working area, a lighter berth front edge working area, a container yard and a landside interaction area. The loading and unloading system is formed by a quay crane, a lighter loading and unloading ship overhead crane, a seagoing vessel wharf front edge three-dimensional track horizontal transportation system, a lighter berth front edge three-dimensional track horizontal transportation system and a three-dimensional automatic container yard loading and unloading system. The loading and unloading process comprises the steps of unloading a ship; loading and unloading a ship at the lighter berth; carrying out cargo concentration in a port and evacuation of cargoes from the port for a container, and loading and unloading the container; andrehandling, loading and unloading a container yard. The various function areas in general arrangement are compact in arrangement, high in land area utilization rate, short in horizontal load distance,free of interference, and low in energy consumption. The whole loading and unloading system and the process technology are mature and reliable, the control system is simple, and the cost is low.

The invention discloses a method used for realizing the integral lifting of marine engineering modules in the marine engineering field. After the module is constructed integrally, the invention makes use of floating cranes, barges and special crane beams to realize the integral lifting of modules on water by regulating the sea gauge of a main hull. Compared with the similar technology, the invention has the following advantages that the preparation of special crane beams can reduce the length of lifting cables so as to enhance the effective lifting height of floating cranes; and the adopting of the floating crane to lift the modules to the barges can avoid the use of a plurality of fittings used for conveying so as to reduce the cost. Simultaneously, the deep water is adopted to moor the main ship so as to ballast the main hull and reduce the height of the freeboard and then the high lifting capability of the floating crane is enhanced and the shipbuilding cost is reduced finally.

Methods and systems for producing, trading, transporting, conveying, and storing non-salt water are disclosed. More specifically, methods and systems for producing, trading, transporting, and storing large quantities of water having specific characteristics are provided. Various transport systems are disclosed, including devices and methods for utilizing standard shipping containers on ships, oil tankers, barges, boats, trains, trucks, planes, and other modes of transportation. More particularly, this invention relates to delivering drinkable water to the water-poor regions of the globe using large bags or membranes in shipping containers, empty cargo holds, or empty oil tankers' cargo holds.

A method and apparatus for removing debris from an ocean floor or seabed employs a subsea debris basket. The basket eliminates the absolute necessity of a cargo barge or any other supporting vessel that might be required to remain in a field until the objects on the ocean floor can be lifted. The present invention provides a non-weather sensitive solution. The present invention affords the safe operation in that all lifting and lowering is performed in a subsea environment next to the ocean floor or seabed. The present invention enables operation to be completed with the use of an ROV or remotely operated vehicle. The present invention provides improved offshore efficiency, less time being required to recover debris from the seabed to the underwater salvage basket or debris basket. The present invention enables the possibility of use of an A-frame or simple crane to lower debris into a subsea basket. The basket can be reused or redeployed in the field if desired. The basket may also be “reefed” in place to address the stability concerns of small debris and to minimize transit time of debris to a reef site.

The invention discloses a method for disassembling and assembling a superaqueous bridge, which combines the buoyancy change of a barge with the waterlevel change caused by the rising and the falling of the tide level. The method can be used in a light-draft area where a floating crane can not enter, and can be effectively and safely used within the carrying capacity range of a buoyant box.

A support structure for supporting a lift crane, and in particular to a lift crane jack-up structures, including rigs, platforms, barges, boats or the like, wherein the lift crane is positioned about a leg of the jack-up structure atop the jack-house. The preferred embodiment of the present invention contemplates a system for elevating a lift crane above the deck and about the leg of the jack-up structure, without relying upon the leg for structural support. A structurally reinforced jack-house having jacking units interfacing with the leg is provided at the deck of the vessel the jack-house configured to engage and support a crane tube column upon the roof of the jack house, which crane tube column in turn has situated thereupon the lift crane. The combined jack-house/crane tube column design allows one to support a crane above the deck in a stable manner independent of the leg situated therethrough, so as to provide a superior structural support for the lift crane, while providing ample space within the jack-house for the jacking units. The combined jack-house/crane support structure thereby affords significant space savings upon deck of the platform, while providing enhanced support of the lift crane. The substructure of the vessel comprises longitudinal and transverse bulkheads intersecting to form a support cell having a perimeter, the portion of the bulkheads forming the cell extend vertically through the deck to form the walls of the jack house and support for the platform. In an alternative embodiment, a truss-type bracing assembly engages the perimeter of the support cell below deck to form a raised platform without walls.

The invention discloses a device for an underwater pile foundation construction platform convertible in floating and fixing and belongs to the field of bridge construction. The device comprises a two-barge supporting device body, a shape steel beret slice combination construction platform device body, a positioning device body, a hole guiding and rock embedding device body and a system conversion device body. Two barges are parallelly connected to be the floating supporting device body, a shape steel beret slice combination construction platform is assembled on the floating supporting device body, and the floating supporting device body and the shape steel beret slice combination construction platform are fixedly connected to form an overwater floating construction platform device body; hole guiding is conducted through a percussion drill, and a pile foundation steel casing is embedded into a basement rock stratum through the percussion drill assisted with hoisting equipment and a vibration hammer; the shape steel beret slice combination construction platform above a floating platform is made to fall onto bracket supporting device bodies on the two sides of the pile foundation steel casing to complete platform system conversion by increasing the immersion depth of the two-barge supporting device body; and finally pile foundation construction is conducted. Under the conditions that the site condition is limited, waterway regulation is strict, and the geological condition is unfavorable, by using the device, the effects of being quick in starting is achieved, construction is easy and convenient, and the construction period is greatly shortened; and meanwhile, the material investment amount is small, and the cost is reduced.

The invention provides an offshore engineering vessel loading and launching system and method. The system comprises a semi-submersible barge and a drag system, wherein a plurality of standby dragging winches are additionally arranged at the outer side of a barge slideway so as to be used for guaranteeing the safety in loading. The method is characterized in that the standby winches which are additionally arranged at the outer side of the barge slideway are used for dragging a main vessel body to the barge slideway from a wharf construction slideway, the barge is adjusted by discharging the water from different cabins of the semi-submersible barge, so that the horizontal dragging loading safety coefficient can be improved, the construction period is shortened, and the dragging cost is reduced.

According to some aspects, a tug and barge arrangement is provided that is configured with an articulated conduit system for transferring a fuel gas (e.g., natural gas) between the tug and barge. In some embodiments, an articulated conduit system is provided that comprises a plurality of conduits fluidically interconnected by rotatable joints configured to permit positional alterations of the fluid conduits that result from differential movement between a tug and barge, such as relative vertical displacement between the tug and barge and/or relative rotation between the tug and barge about a forward-aft axis of the tug.

The invention discloses a modern intensive fast fish farm. The modern intensive fast fish farm is constructed on a pollution-free sea surface, and an offshore area which is 8 kilometers long and 3 kilometers wide and has a water depth of 20 to 100 meters is required. The modern intensive fast fish farm comprises a reinforced concrete foundation, bridge piers, fender piers, beams, movable fish boxes and matched steel wire mesh risers, wherein gantry cranes, reinforced concrete beams for supporting the gantry cranes, longitudinal reinforced concrete beams supported by bridge pier brackets, steel rails on the longitudinal reinforced concrete beams and portal bridge cranes capable of moving on the steel rails are arranged over water; multiple gondolas, tugboats and barges for periodically lifting feeding cylinders to feed fish food or lifting the movable fish boxes to the water surface in a layering manner and unloading fish onto the barges or the tugboats are further arranged on the water surface; after the fish is unloaded, the boxes are lifted into water again according to the sequence of the layers; in addition, multiplying farms for precious fish fries such as cods and squids are further constructed on the shore, and after being cultured to certain specifications, juvenile fish are fed into the steel wire mesh risers communicated with the movable fish boxes for being fed in the boxes.

An apparatus for dewatering dredge spoils includes a floating barge having a planar upper surface or deck. One end of the barge, such as the stem, is partially flooded or otherwise ballasted so that the deck slopes downwardly from the bow toward the stem. Dredge spoils removed from a waterway are deposited onto the bow where they flow down toward the stem. A plurality of concrete blocks on the deck form an attenuator that, in turn, defines one or more settling ponds on the surface of the barge. A weir across the stem of the barge forms an additional settling pond at the rear of the barge. Solids suspended in the water removed from the waterway settle out onto the deck when the dredge spoils are deposited onto the bow. Remaining solids suspended in the water deposit onto the deck as the water flows through the settling ponds. The relatively clear water that remains then flows back into the waterway off the stem of the sloped barge after passing through the settling ponds. Because the apparatus and method use materials and equipment, such as the barge and blocks, that are already likely to be on hand, the method and apparatus are particularly economical and easy to implement.

The invention discloses a foundation construction barge for an immersed tube, which is characterized in that a rail extending in the barge direction is arranged on one side of the barge main deck; a travelling mechanism is arranged on the rail and driven by a cable winch; the travelling mechanism comprises an elephant trunk trolley and a flat rammer trolley; the elephant trunk trolley is connected with an elephant trunk system located on one side of the barge; and the flat rammer trolley is loaded with a vibratory hammer and a vibratory hammer lifting system. The foundation construction barge for the immersed tube is reasonably designed in structure, has multiple functions, and meets the engineering requirements of stone transportation, accurate riprap and hammering. The barge is highly effectively to operate, flexible and can realize the area construction requirement of a fixed point. The barge can be formed by modifying the prior ship; each device on the barge is reasonably distributed; and the barge can meet the requirements of island tunnel construction, construction safety and reliability.

A submersible offshore jack-up frame comprises a base and at least four legs, wherein said base is positionable along said legs, so that said base may be moved from a first position wherein said base is transportable on the deck of a surface vessel such as a barge, to a second position wherein said base is above a water surface when supported by said legs. The base may be elevated above the deck of the barge when supported by said legs. The base is also positionable on said legs so as to be submerged below the water surface to allow a barge to be positioned above the base, and then elevated to support the barge above sea level.

The invention relates to a device for dredging sludge by a dredger. The device comprises a suction dredger which is used for transmitting the sludge in a riverway or a lake into a port of a waterborne floating tube through a sludge suction pump; the other port of the waterborne floating tube is communicated with a shore tube bridged over the land; the device is characterized in that: the length of the waterborne floating tube is limitless and the waterborne floating tube consists of a plurality of sections; and any two adjacent sections of the waterborne floating tube are connected with each other through a booster pump. In the device, as the waterborne pressurization of the booster pump is assorted with the suction dredger, the extraction and the transportation of sludge form line production; therefore, the process flow is simplified, the investment of equipment and labor is reduced, and most importantly, the working efficiency of engineering is improved greatly and the daily management work and the construction cost are reduced at the same time; and secondary pollution of barge transportation to the periphery environment can be avoided.

The invention relates to a ship launching method on a floating slipway or a carried barge deck. Ship launching on the floating slipway or the carried barge deck is longitudinal launching, and a mode that the tail firstly enters the water forwards is adopted; and the launching declivity of the floating slipway of a carried barge, the sliding force of a launching sip and the quantity and pressure intensity of airbags need to be calculated in advance before launching. The method comprises the steps of (1) fixing the launching ship; (2) arranging airbags; (3) inflating the airbags to jack the launching ship and removing a support pier; (4) adjusting the weight and a pitch angle of the floating slipway or the carried barge; and (5) cutting off a fixed wire rope at the head of the launching ship by adopting an oxygen-acetylene gas cutting method, and enabling the launching ship and the rolling airbags to enter water together under the action of the sliding force of the launching ship, and finally retracting the airbags, thus completing launching. Ship construction on the water without a dock can be achieved, occupation of the land and the coastline can be effectively reduced, environment protection is facilitated and the ship launching method has good social and economic benefits.