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Damping mechanism and buffer cylinder type flexible connecting device

A vibration damping mechanism and flexible connection technology, applied in floating buildings and other directions, can solve problems such as failure of risers, and achieve the effects of ensuring effectiveness, eliminating alternating bending moments, and reducing the risk of fatigue damage.

Pending Publication Date: 2019-05-21
CHANGSHA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a vibration damping mechanism and a buffer cylinder type flexible connection device to overcome the riser failure problem caused by the rigid fixed connection between the riser and the floating platform

Method used

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  • Damping mechanism and buffer cylinder type flexible connecting device
  • Damping mechanism and buffer cylinder type flexible connecting device
  • Damping mechanism and buffer cylinder type flexible connecting device

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Embodiment Construction

[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention relates to the field of ocean engineering equipment, in particular to a damping mechanism and a buffer cylinder type flexible connecting device, wherein the damping mechanism comprises across hinge assembly, wherein the cross hinge assembly comprises a near-center hinge support, a cross shaft and a far-center hinge support, which are sequentially connected in a first direction; anda spherical hinge assembly, wherein the spherical hinge assembly comprises a ball head connecting rod and a spherical hinge support with a spherical cavity, a connecting rod part of the ball head connecting rod is fixedly connected with the far-center hinge support, and a ball head part of the ball head connecting rod is hinged in the spherical cavity. According to the invention, the spherical hinge and the cross shaft hinge are both adopted; compared with a prior rigid fixed bracket, the mechanism increases the degree of freedom of rotation, eliminates the alternating bending moment caused byrotation during fixed rigid connection, improves the self-adaptive capacity for random load and impact, greatly reduces the fatigue damage risk and ensures the effectiveness of a vertical pipe.

Description

technical field [0001] The invention mainly relates to a marine oil and gas transportation device, which belongs to the field of marine engineering equipment, and in particular to a vibration damping mechanism and a buffer cylinder type flexible connection device. Background technique [0002] Deepwater oil and gas development generally adopts the model of floating platform and deep water riser. Commonly used floating platforms include: tension leg platform (TLP), single tube platform (SPAR), semi-submersible platform (SEMI) and floating production storage platform. Oil Offloading Platform (FPSO), etc. [0003] The offshore oil and gas production system model is as follows: (1) The subsea wellhead is connected with TLP or SPAR or SEMI through a riser, and then connected with FPSO or other tankers through a pipeline; (2) FPSO is used as a production platform and directly connected with the subsea The wellhead is connected; (3) The subsea production system is connected with t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B35/44
Inventor 郭磊段梦兰吴泽超潘钟键刘卫衡程立志
Owner CHANGSHA UNIVERSITY
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