Wave compensation piston tensioner and use method thereof

Abstract

The invention provides a wave compensation piston tensioner and a use method thereof. The wave compensation piston tensioner mainly comprises a piston tensioner, a gas-liquid energy accumulator, an electric or hydraulic winch, an air bottle set, an oil supplementing device and an air discharging device, wherein the piston tensioner is connected with the gas-liquid energy accumulator through a hydraulic pipeline, the air bottle set is connected with the upper portion of the energy accumulator, the oil supplementing device is connected with the hydraulic pipeline, and the air discharging deviceis connected with the upper portion of a hydraulic oil cylinder; and a cable is wound on the piston tensioner, one end of the cable is connected with the electric or hydraulic winch, and the other endof the cable is connected with a load. The passive wave compensation piston tensioner can be applied to an offshore drilling device, an offshore transfer device, an offshore replenishing device, a marine crane and the like, the precision is high, and the reaction is sensitive and rapid; and the oil cylinder and the energy accumulator are adopted, so that a compensation device and a hydraulic system are simple in structure, easy to implement, rapid in reaction, high in tension control precision, high in safety and reliability and capable of normally working during power loss.

Description

technical field [0001] The present invention relates to the technical field of heave compensation mechanism, in particular, to a heave compensation piston tensioner and its usage method. Background technique [0002] The development of marine resources requires a variety of equipment, among which marine cranes are special hoisting machinery that operate in the marine environment. There will be complex relative motions such as rolling, pitching and heaving. The cargo being lowered will collide with the rising hull. The cargo that is about to be dropped on the deck will suddenly increase due to the sinking of the hull and the deck. This causes the cargo to be suspended in the air, which brings safety hazards to the hoisting operation of the ship at sea. [0003] For drilling ships and semi-submersible drilling platforms, under the action of waves, there will be motions with six degrees of freedom, including heave, lateral movement, longitudinal movement, yaw, roll, and pitch....

AI Technical Summary

Problems solved by technology

Due to the complex relative movement of ships, various types of supplies, and long transmission distances, there are many difficulties, which bring great challenges to the horizontal supply of maritime navigation.

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