摘要:
A construction method for fixing a foundation of a waterborne structure including an offshore platform to a seabed (2) is described. The foundation includes at least one hollow column (108) which incorporates a pile cap (43) at its bottom. In the method, piles (49) are driven into the seabed (2) to a design depth, and the hollow column (108) is then lowered to the seabed (2) so as to surround the pile group and be supported thereby. Concrete is cast into the bottom of the hollow column (108), wherein reinforcement steel bar (45) has been pre-installed to translate the conventional mass concrete plug into a reinforced concrete small pile cap (43) adapted to support the hollow column (108) thereon during construction. The hollow column (108) is de-watered, excessive pile length is cut, and pile cap reinforcement (47) is fixed followed by concrete casting of the pile cap (44). A platform deck is then installed and constructed on top of the now-fixed hollow column (108).
摘要:
Disclosed are a semi-submersible raft wind power generation unit and a construction method therefor. The raft wind power generation unit includes at least three floaters (12) and at least three wind turbines (21) configured to be placed on the floaters (12). The raft is configured to turn about a vertical axis and be fixed to a seabed (2) by a mooring line (36). A force resultant from an incoming wind load passes closely around the center of geometry of the raft, which is a distance away from the center of rotation of the raft so that a yaw moment about the center of rotation is created that rotates the raft until the force resultant passes through the center of geometry and center of rotation
摘要:
The invention is an Energy Storage Bridge (ESB) consisting of air-tight steel pipes, which are used to store the compressed air as stored energy, also used as the load carrying structural elements of the bridge. The stored energy can be the unwanted grid power or the intermittent regenerated energy sources. When the energy is needed, the compressed air is released to convert back to electricity, or to make use of the compressed air to produce hot water during its compression cycle, and cool air at its decompression and expansion cycle when it absorbs heat- an air conditioning technology called Air Cycle Air Conditioning (ACAC) widely used in commercial aircraft. For sea-crossing bridges, because of their great lengths the bridge body volume is enormous, and because of their remoteness from populated areas, they suit well for mass energy storage attached to power plants. With safety measures built in the steel pipes, the ESB can be applied to city road bridges. Since these bridges are not far from populated areas, they can be used as small energy storage units that provide the nearby industrial and commercial complex as well as residential buildings hot water and compressed air for air-conditioning using ACAC technology. The process eliminates the conversion of compressed air back to electricity, but directly uses the compression and decompression cycles to supply hot water and cool air for air-conditioning to the nearby consumers.
摘要:
A self-aligning to the incoming wind floating platform supporting multiple wind turbines (17, 18) forms a wind power generation unit. Under horizontal wind, the wind load resultant passes the center of geometry (or “C.Geo”) of the wind load receiving areas of the floating platform, but not the turning axis (15). This results in a yaw moment about the turning axis (15) to turn the floating platform, until the wind load resultant simultaneously passes through the C.Geo and the turning axis (15). A wind park or wind farm may include at least one of these floating platforms that are capable of self-aligning to the incoming wind for electric power generation. The floating platform helps reduce the length of a submarine power cable (44) of the platform, hence reducing electric resistance and subsequently heat loss, thereby reducing the cost of the submarine power cable (44).
摘要:
A wind turbine energy storage system includes a hollow wind turbine tower shaft having a top end and a bottom end covered by top and bottom end caps respectively to form a tank. A compressor is coupled to the wind turbine for compressing air into the tank through a high pressure pipe and valve assembly. The compressed air stored in the tank can be released on demand or on a fixed schedule. A method of storing energy in a wind turbine is also disclosed.
摘要:
Method or apparatus for passive process monitoring is described. One aspect of the invention relates to monitoring a process executing on a computer system. An operating system is instructed to report at least one event related to process termination. Termination of the process is detected in response to a reported instance of the at least one event by the operating system. A notification is provided to an agent in the computer system that the process has terminated.
摘要:
An offshore platform for a marine environment includes a regulating tower section supporting at least one offshore wind turbine, at least one buoyancy tube connected between the regulating tower section, the at least one buoyancy tube having a tapered lower end extending to a seabed, and a concrete bed within the seabed. The tapered lower end is a cone-shaped bottom slab having a flat top surface with an apex of the cone-shaped bottom slab pointing downward towards the seabed. The concrete bed includes a reversed cone-shaped indentation to which the cone-shaped bottom slab is to be fixed within that was formed in the concrete bed by the cone-shaped bottom slab prior to the concrete bed hardening to a final design strength.
摘要:
In a construction method for planting a hollow column (21) in a seabed (2) for supporting a waterborne structure (11) thereon, a steel tube (101) is driven into the bed (2) to the founding stratum (5), with materials of the bed (2) within tube (101) excavated and any surplus steel tube (101) cut off. A first segment (1A) is inserted into tube (101), then second/subsequent segments (2A-8A) are joined tightly to its previous segment (1A-7A) to form column (21). Pressure grouting fills gaps between the tube (101) and column (21). Upon hardening, the tube (101) and column (21) form an integral unit adapted to take loads due to a surface friction resistance present between the steel tube (101) outer surface and soil materials (4) of the seabed (2), and due to an end bearing resistance present between the base of column (21) and the founding stratum (5).
摘要:
A floating wind farm includes a plurality of floating rafts connected with one another and being disposed in a body of water below the water by a predetermined distance; a plurality of wind turbines connected to the floating rafts respectively and being configured to be driven by wind and thereby generate power; a power generator connected to the floating rafts; a plurality of anchors connected to the floating rafts respectively and disposed in the body of water for confining the location of the floating rafts. Each of the floating rafts includes at least three pipes and a plurality of ballast blocks attached to the pipes. The pipes are configured to store air compressed by the power generated by the wind turbines. The power generator is configured to generate and output electricity from the compressed air stored in the pipes.
摘要:
An energy storage bridge includes a plurality of bridge girders. The bridge girder includes a number of steel pipes and a plurality of web plates. The steel pipes are assembled either in a single row or in multiple rows in the structural depth direction to form the girder together with the web plate welded between the two halves of the pipe; or with two web plates welded to each side of the pipe. The bridge girder forms an energy storage unit between two consecutive movement joints of the bridge, and two consecutive storage units can be joined by high pressure flexible pipe to form a giant energy storage unit.