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首页> 外文会议>American Society of Mechanical Engineers(ASME) Pressure Vessels and Piping Conference; Symposium on Fluid-Structure Interactions, Aeroelasticity and Flow-Induced Vibration and Noise; 20060723-27; 20060723-27; Vancouver(CA); Vancouver(CA) >A FULL SCALE TEST FOR ACOUSTIC FATIGUE IN PIPEWORK
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A FULL SCALE TEST FOR ACOUSTIC FATIGUE IN PIPEWORK

机译：管材声学疲劳的全面测试

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摘要

Gas flow through a corrugated pipe can produce unacceptable levels of noise. The occurrence of such noise gave rise to concerns about vibration induced fatigue of small-bore subsea pipework in the Schiehallion oil field. In order to check that the subsea pipework was free from noise-induced vibration a full scale replica of the subsea equipment containing the small-bore pipework was built and tested. The test required the generation of acoustic pressures with a 1 bar amplitude and a frequency range of 80 to 800Hz. It was also necessary to arrange for resonant conditions within the pipework and for acoustic nodes and anti-nodes to be swept though a range of possible locations. The test was conducted with full-scale conditions of methane at a static pressure of 170bar and with a range of gas flow rates. Particular attention was given to achieving the correct acoustic and structural natural frequencies together with the correct acoustic and structural damping ratios. The subsea equipment was found to be vulnerable for one operating condition. This vulnerability was removed by retro-fitting a brace to the existing subsea pipework.
机译：穿过波纹管的气流会产生不可接受的噪声水平。这种噪声的出现引起人们对Schiehallion油田小口径海底管道振动引起的疲劳的担忧。为了检查海底管道系统是否没有噪音引起的振动，建造并测试了包含小口径管道系统的海底设备的完整复制品。该测试要求产生声压，其振幅为1 bar，频率范围为80至800Hz。还必须安排管道内的共振条件，以及使声学节点和波腹扫过一定范围的可能位置。该测试是在甲烷的满量程条件下，静态压力为170bar和一定范围的气体流速下进行的。特别注意实现正确的声学和结构固有频率以及正确的声学和结构阻尼比。发现水下设备在一种操作条件下易受攻击。通过在现有的海底管道上加装支架，可以消除此漏洞。

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