A half-physical simulation experiment device for marine riser system multi-body dynamics

Abstract

The invention relates to a marine riser system multi-body dynamics semi-physical simulation experiment device. The device comprises an excitation platform, a tensioner, a telescopic joint and a risersimulation system. A six-degree-of-freedom experimental platform is used as the excitation platform. The telescopic joint is composed of an inner cylinder and an outer cylinder which can relatively slide. The top end of the tensioner hydraulic cylinder is connected with the excitation platform. The bottom end of the tensioner hydraulic cylinder is connected with the telescopic joint. The mode of combining the hydraulic system and computer control is used as the riser simulation part. Firstly the motion information is transmitted to the riser dynamics simulation system by the sensor, and then the riser dynamics simulation system calculates the dynamic response of the riser system and determines the reaction force of the riser system to the telescopic joint and applies the reaction force through the hydraulic system. The platform-tensioner-telescopic joint-riser multi-body dynamics experiment device is constructed by using the semi-physical simulation mode so that the coupling mechanismbetween the marine riser multi-body systems can be accurately simulated and the cost of the experiment device can also be saved.

Description

technical field [0001] The invention relates to an ocean riser system dynamics experiment device, in particular to a semi-physical simulation experiment device used for the ocean riser system multi-body dynamics experiment. Background technique [0002] The marine riser system is the key equipment for offshore oil and gas exploration and development. The top of the riser system is suspended on the platform through tensioners and expansion joints. The bottom of the riser system is connected to the underwater blowout preventer through the riser bottom assembly. The platform deforms Smaller ones can be regarded as rigid bodies, risers, tensioners, and expansion joints are elastic bodies, and the components are connected by rotating or sliding pairs, so the entire marine riser-tensioner-expansion joint-platform system is a typical Rigid-flexible coupling multi-body system, referred to as marine riser multi-body system. The marine riser multi-body system is affected by platform ...

AI Technical Summary

Problems solved by technology

Or simplify the riser system as a spring damping system, carry out axial dynamic analysis, ignore the influence of marine environmental loads, and cannot simulate the nonlinear dynamic characteristics of the riser system in the marine environment; or simplify the tensioner as a spring system , it is impossible to accurately simulate the tensioner hydraulic dynamics and its nonlinear characteristics, especially complex issues such as nonlinear hydraulic dynamics and hydraulic system control involved in the recoil process; or simplify the three-dimensional topological relationship of the deepwater drilling riser multi-body system It is a two-dimensional relationship, ignoring factors such as tensioner distribution and multi-degree-of-freedom motion

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