36results about How to "Shorter working time at sea" patented technology

The invention relates to an offshore fan supporting structure and a construction method thereof. The offshore fan supporting structure comprises a main body mechanism, a supporting platform and a transition mechanism. The offshore fan supporting structure is great in integral rigidity, can be suitable for water path of 60 m, and is beneficial for improving applicability and reliability of an offshore fan foundation. Each foundation structure of the supporting structure can be constructed on land, so that foundation mounting can be completed by only needing to grouting on sea, offshore operation time is reduced, and construction cost is reduced. A main cylinder of the transition mechanism is connected through four diagonal bracings, the tops of the diagonal bracings are connected with the main cylinder, and the bottoms of the diagonal bracings are connected with leg cylinders, so that great bending moment of the fan is reasonably converted into axial force of diagonal bracings, and therefore, fatigue performance of the area is improved.

The invention provides an ice-breaking and wave-eliminating composite device for an offshore wind power pile-type foundation. The ice-breaking and wave-eliminating composite device is installed on a vertical steel pipe pile, and an upper annular plate and a lower annular plate are arranged on the outer wall of the steel pipe pile in the circumferential direction. The ice-breaking and wave-eliminating composite device comprises an ice-breaking cone, a plurality of ice-breaking blades and a sleeve, the ice-breaking cone is in an annular shape, a plurality of wave-eliminating holes are formed inthe ice-breaking blades , all the ice-breaking blades are vertically fixed to the ice-breaking cone at intervals, the ice-breaking cone sleeves the outer wall of the sleeve, the sleeve sleeves the outer side of the steel pipe pile, and is located between the upper annular plate and the lower annular plate and slidably connected with the steel pipe pile; a plurality of first telescopic springs arearranged at the top of the sleeve in the circumferential direction, and a plurality of second telescopic springs are arranged at the bottom of the sleeve in the circumferential direction. The ice-breaking and wave-eliminating composite device has the beneficial effects that the structure is simple, the cone volume is small, the vertical height is less than the difference between the average high tide level and the average low tide level in the sea area where the device is located, the self-adaption change with the tide level can be achieved, and the ice load during the ice period and the waveload during the ice-free period are effectively reduced.

The invention relates to a wet-dragging self-installation type offshore substation and seabed big data center integral structure and an installation and maintenance method. The wet-dragging self-installation type offshore substation and seabed big data center integral structure is mainly composed of an offshore substation upper module, an integral jacket, a seabed big data center module and lifting type connecting pile legs for connecting the upper module and the seabed big data center module. According to the invention, a wet-dragging self-installation type integral structure scheme is adopted, the device can be applied to a seabed big data center of an offshore transformer substation structure attached to medium and small upper modules (such as 200MW-500MW offshore booster stations), the application range is wide, the feasibility is high, the additional value of the offshore transformer substation is effectively improved, the electric energy access and data transmission requirements of the seabed big data center are met, and the cost is reduced. And the offshore construction operation flow of each stage of transportation, installation, service operation and maintenance is simplified.

The invention discloses a large-diameter single-pile steel pipe pile internal inserting transition section grouting construction system and method. The system comprises a steel pipe pile and an internal inserting transition section. A ring plate arranged on the internal inserting transition section is fixedly connected with the steel pipe pile. The bottom of the internal inserting transition section is connected with the steel pipe pile through an installing part. Grouting slurry is grouted into a grouting area between the internal inserting transition section and the steel pipe pile. The method comprises the following steps that pile striking operation of the steel pipe pile is carried out, the portion, exceeding the designed elevation, of the upper end of the steel pipe pile is cut, andthe pile top is polished flatly; the internal inserting transition section is internally inserted into the steel pipe pile and fixed; and the grouting slurry is grouted into the grouting area. According to the system and the method, construction precision is high, the safety coefficient is high, the requirement for equipment is low, marine operation time and construction cost are saved, and grouting and connecting construction quality of the internal inserting transition section can be ensured.

The invention discloses a pipe clamp type sacrificial anode installation device free from underwater welding. The device comprises a pipe clamp (1) and a sacrificial anode block (2), wherein the sacrificial anode block (2) is arranged on the pipe clamp (1) and is electrically connected with the pipe clamp (1). The sacrificial anode block and the pipe clamp are connected into a whole in advance through welding; due to the pipe clamp, the sacrificial anode block can be quickly fixed on an underwater protected metal pipe fitting, so that the sacrificial anode block and the underwater protected metal pipe fitting are conducted; therefore, the effect of preventing underwater metal structures from being corroded and damaged is achieved. By the device, underwater high-efficiency installation of the sacrificial anode block is realized and conduction connection is kept; and the device disclosed by the invention is simple in structure and free from underwater welding, can be installed quickly and is capable of shortening offshore operation time and reducing offshore operation risks and the operation cost.

The invention discloses a supporting structure of a fixed offshore photovoltaic power generation platform and a construction method of the supporting structure. The supporting structure comprises a platform truss, a box foundation, supporting columns, negative pressure pumping holes and a towing float; the box foundation is arranged below the platform truss; the supporting columns connect the platform truss and the box foundation; the supporting columns are of a hollow structure, and the bottoms of the supporting columns communicate with the box foundation; the negative pressure pumping holesare formed in the tops of the stand columns and communicate with the supporting columns; and the towing float is arranged on the box foundation and connected with the supporting columns through connecting cables. According to the supporting structure of the fixed offshore photovoltaic power generation platform and the construction method of the supporting structure, for adopting modular design, each platform supporting structure can be formed separately, the adjacent structures are connected through hinges, the good integrity of the structures is ensured, meanwhile, the huge bending moment bore by the platform truss when the platform truss is laid on a large scale is greatly reduced, and the structures are enabled to have higher ability to resist environmental load.

The invention provides a fixed conduit traction sensor and a use method thereof, including a wind power pipe pile, a ship, a solidified soil conveying device, a ship traction device, and a sounding sensor; The conveying device transports the solidified soil in the ship to the scour pit of the pile foundation of the wind power pipe pile. The depth-sounding sensor is installed on the ship's traction device, and the depth-sounding sensor is used to measure the depth of the scour pit. Therefore, taking advantage of the characteristics of high fluidity of the solidified soil, the solidified soil can be pumped to the designated position by using the on-board deployment and direct pumping process, covering the whole area, and can be operated on a large scale, which greatly shortens the working time at sea. The ship traction device does not need to be close to the pile foundation during construction, which can greatly reduce the accidental damage caused by the collision of pile foundation and submarine cable during construction. The safety protection is reliable and guaranteed, and the normal operation of the wind farm will not be affected during construction.