Vertical pipe vortex-induced vibration response testing device and using method thereof

Abstract

The invention relates to the field of ocean engineering instruments, in particular to a vertical pipe vortex-induced vibration response testing device and a using method thereof. The vertical pipe vortex-induced vibration response testing device comprises a supporting frame, a first rotation adjusting structure, a steel wire rope, a power mechanism used for driving the steel wire rope to do reciprocating linear motion, a first guide rail arranged on the first rotation adjusting structure, a first adjusting sliding block connected to the first guide rail in a sliding mode and a first pipe connector arranged on the first adjusting sliding block. The second rotation adjusting structure is provided with a second guide rail, the second guide rail is slidably connected with a second adjusting sliding block, and the second adjusting sliding block is provided with a second pipe joint; one end of the steel wire rope is connected with the power mechanism, and the other end is connected with the first pipe joint through a sliding structure. According to the invention, factors, such as top tension, outflow velocity, series-parallel connection mode and axial distance between risers, which influence the vortex-induced vibration characteristics of the risers can be tested and studied, and the actual working condition of the deep sea risers can be comprehensively simulated.

Description

technical field [0001] The invention relates to the field of marine engineering equipment, and more particularly, to a test device for vortex-induced vibration response of a standpipe and a method for using the same. Background technique [0002] my country's ocean area is vast, rich in resources, and has high scientific research value. As an important support for marine scientific research, marine engineering equipment is a high-input, high-risk equipment. Among them, deep-sea risers are important for marine oil and gas exploitation. Marine engineering equipment requires high technical indicators. [0003] However, the current engineering equipment for deep sea oil and gas exploitation in my country is relatively backward, and the existing test devices for the dynamic response of deep sea risers cannot comprehensively simulate the actual working conditions of deep sea risers. The main defect is that most of the experimental devices are only for One or two factors that affect...

AI Technical Summary

Problems solved by technology

[0003] However, the current engineering equipment for deep sea oil and gas exploitation in my country is relatively backward, and the existing test devices for the dynamic response of deep sea risers cannot comprehensively simulate the actual working conditions of deep sea risers. The main defect is that most of the experimental devices are only for One or two factors that affect the vibration characteristics of the riser are studied, and the simulation of the actual working conditions of the riser is not comprehensive enough; the series-parallel connection of the riser or the axial distance between the risers cannot be adjusted during the test; there is also the applied top tension The test is not precise enough, the time-varying cycle is not accurate, and the module for applying the top tension is not automatic enough

[0004] Prior art such as the Chinese patent of notification number CN105157940B, said patent is a deep-sea tensioned single riser vortex-induced vibration test device under the condition of inclination step flow, including a marine riser model, a transverse test support frame, a trailer, a strain acquisition instrument and computer, the two ends of the ocean riser model are provided with end support devices connected with the transverse test support frame, and the transverse test support frame is fixed at the bottom of the trailer; the ocean riser model includes several wires and a thin-walled copper pipe, and the ocean riser model The shaft section at one end of the pipe model is equipped with a streamlined fairing, and the wires and tension sensors are connected to the strain acquisition instrument. The patent can realize the vortex-induced vibration test observation of the deep-sea riser with a large Reynolds number and a large length-to-diameter ratio. Although the design is simple, the installation The debugging is convenient and the cost is low, but the patent can only conduct the vortex-induced vibration test on a single standpipe, and cannot conduct the vortex-induced vibration test on two or more standpipes, let alone study the influence of the standpipe axial distance on the standpipe vortex-induced vibration

Images