| 管道系统泄漏检测的全频域法 |
| |
| 引用本文： | 杨开林,郭新蕾.管道系统泄漏检测的全频域法[J].水利水电科技进展,2008,28(3):40-44. |
| |
| 作者姓名： | 杨开林 郭新蕾 |
| |
| 作者单位： | 中国水利水电科学研究院水力学所,北京,100038 |
| |
| 基金项目： | 国家自然科学基金
,
国家社会公益专项基金
,
中国水利水电科学研究院配套专项基金 |
| |
| 摘 要： | 针对长距离管道输水系统的特点,建立了适合各种边界条件的管道水击频域数学模型,并应用拉氏变换原理导出了实测离散函数的频域数学模型。在此基础上,提出完全在频域中检测管道泄漏的新方法,即管道泄漏检测的全频域法。全频域法与之前频域法的差别有两点:一是边界条件不受限制,二是泄漏检测完全在频域中完成,无需求解任何一点的傅里叶逆变换时域函数。最后通过数字算例检验了管道泄漏检测全频域法的可行性。
|
| 关 键 词： | 管道泄漏 泄漏检测 全频域法 水击 水力瞬变 |
| 修稿时间： | 2008/6/16 0:00:00 |
Pure frequency domain method for pipeline leakage detection in water diversion projects |
| |
| YANG Kai-lin,GUO Xin-lei.Pure frequency domain method for pipeline leakage detection in water diversion projects[J].Advances in Science and Technology of Water Resources,2008,28(3):40-44. |
| |
| Authors: | YANG Kai-lin GUO Xin-lei |
| |
| Abstract: | In consideration of the characteristics of pipeline system in long distance water diversion projects,a water hammer frequency domain model,suitable for various boundary conditions and incorporating the Laplace transform of the discrete measured data in the frequency domain,is established.A novel method for pipeline leak detection called the pure frequency domain method is proposed.Compared with previous frequency response methods,the pure frequency domain method has two advantages: the boundary conditions are unconstrained and the leak detection is carried out only in the frequency domain,without calculation of the inverse Fourier transform function.Finally,the model is verified through application to a practical problem. |
| |
| Keywords: | pipeline leakage leakage detection pure frequency domain method water hammer hydraulic transient |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《水利水电科技进展》浏览原始摘要信息 |
|
点击此处可从《水利水电科技进展》下载全文 |
|
