• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>XXIX Biennial Congress of the International Association of Hydraulic Engineering and Research (IAHR), 29th, Sep 16-21, 2001, Beijing, China >EXPERIMENTAL STUDIES OF LEAK DETECTION USING HYDRAULIC TRANSIENTS
【24h】

EXPERIMENTAL STUDIES OF LEAK DETECTION USING HYDRAULIC TRANSIENTS

机译：液压瞬态泄漏检测的实验研究

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hydraulic transients in pipelines are normally looked upon as a problem but could also be considered as a kind of a probe propagating through the pipeline. Measurement and careful analysis of a pressure transient could reveal some valuable properties of the pipeline. Thus a leak in a single pipeline should affect the appearance of the measured transient making it possible to indicate the existence of a leak as well as pointing at the location of the leak. This paper will give some theoretical and experimental evidence for this beneficial use of hydraulic transients. In the first place theoretical computations of the effect of a leak on the transient are discussed concerning the case with a single pipeline at pump stop. It is shown that the transient wave interacts with the leak generating a small pressure rise at the measurement point at the pumping station. The elapsed time between pump stop and the recorded pressure rise can be used for assessing the location of the leak. Secondly, results from transient measurements on an experimental pipeline set-up with simulated leaks are presented. Transients were generated through valve closure at the end of a 135 m long pipeline. Leak flow rates of about 5 - 14 % of the pipe flow were investigated and it was shown that the leak in most cases could be qualitatively traced on the transient measurement and that the leak could be located with an accuracy of a few meters on the basis of a good knowledge of the initial wave propagation velocity.
机译：管道中的水力瞬变通常被视为一个问题，但也可以被视为在管道中传播的一种探针。对压力瞬变的测量和仔细分析可能会揭示出管道的一些有价值的特性。因此，单个管道中的泄漏应影响所测瞬变的出现，从而可以指示泄漏的存在以及指向泄漏的位置。本文将为液压瞬变的这种有益使用提供一些理论和实验证据。首先，讨论了关于泄漏对瞬变影响的理论计算，涉及泵停在单个管道上的情况。结果表明，瞬变波与泄漏相互作用，在泵站的测量点产生较小的压力上升。从泵停止到记录的压力上升之间经过的时间可用于评估泄漏的位置。其次，给出了在具有模拟泄漏的实验管道装置上进行瞬态测量的结果。瞬态是通过在135 m长的管道末端的阀门关闭而产生的。研究了大约5％至14％管道泄漏的泄漏率，结果表明，在大多数情况下，泄漏可以通过瞬态测量进行定性跟踪，并且泄漏的定位精度可以达到几米对初始波传播速度的了解。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号