摘要
在简要介绍深水平台隔水管张紧器结构和工作原理之后,通过分析张紧器气体状态参数变化规律、液压管线压降及液压缸内摩擦力,得到张紧力及张紧器刚度计算公式。以建立的数学模型为基础,基于AMESim软件建立张紧器仿真模型,并以国外一种直接作用式张紧器为例进行实例计算,研究不同参数对张紧器性能的影响。研究结果表明,张紧力随活塞冲程的变化是非线性的,但线性化的张紧力变化曲线与非线性变化曲线基本一致,张紧器的特性类似线性弹簧;高压气体体积和压力对张紧力和张紧器刚度变化起主要作用,增大空气瓶体积不影响张紧器活塞零冲程位置的张紧力,但可以减小张紧器刚度并减缓刚度随活塞冲程的变化,增加张紧力的稳定性。
After a brief introduetion to the structure and operating principle of deepwater platform riser tensioner, the calculation formula for tension and tensioner rigidity was obtained through analysis of the variation law of tensionerg gas state parameter and hydraulic pipeline pressure drop and the friction force within hydraulic cylinder. Taking the established mathematic model as the basis, the tensioner simulation model was established on the basis of the AMESim software. The example calculation was condueted with a foreign direct-action tensioner as an example. The effect of different diameters on tensioner performanee was studied. The research findings show that the variation of tensioner with piston stroke is nonlinear, but the linear tension variation and the nonlinear tension variation are basically in agreement with each other. The property of tensioner is similar to that of linear spring. The high pressnre gas volume and pressure play a major role in tensioner rigidity variation. Increase of air bottle volume does not affect the tension of Iensioner at the piston＇ s zero stroke position, but it can reduce tensioner rigidity and slow down the change of tensioner rigidity with piston stroke, strengthening the stability of tension.
出处
《石油机械》
北大核心
2013年第12期38-42,共5页
China Petroleum Machinery
基金
国家科技重大专项"深水钻完井工程技术"(2011ZX05026-001-05)
中央高校基本科研业务费专项资金资助项目(11CX05009A)
