| 泵系统不同出流方式下的 水锤计算分析 |
| |
| 引用本文： | 于永海,秦晓峰,成斌. 泵系统不同出流方式下的 水锤计算分析[J]. 水利水电技术, 2011, 42(11): 82 |
| |
| 作者姓名： | 于永海 秦晓峰 成斌 |
| |
| 作者单位： | (河海大学水利水电学院，江苏南京210098) |
| |
| 基金项目： | “十一五”国家科技支撑计划项目(2006BAD11B07) |
| |
| 摘 要： | 泵系统自由出流时，在水力过渡过程中出口断面测压管水位与淹没出流时出口断面测压管水位基本不变的情形有所不同。将泵系统出口段作为一种特殊水力元件，应用特征线法计算泵系统自由出流下的水力过渡过程。对同一泵系统，通过事故停泵工况水锤计算可知，与淹没出流相比，自由出流方式可以增大管段水流压强，对水锤防护有利。泵系统自由出流下不需安装拍门或真空破坏阀断流设施，而自由出流比淹没出流多浪费一部分能量。当泵站出水池水位变幅较小、年运行时间较短时，从水锤防护和泵站维护方面看来，自由出流方式则是一种较优的运行方案。
|
| 关 键 词： | 水泵站 水锤计算 自由出流 淹没出流 |
Calculation and analysis on water hammer under different outflow modes of pump system |
| |
| YU Yonghai,QIN Xiaofeng,CHENG Bin. Calculation and analysis on water hammer under different outflow modes of pump system[J]. Water Resources and Hydropower Engineering, 2011, 42(11): 82 |
| |
| Authors: | YU Yonghai QIN Xiaofeng CHENG Bin |
| |
| Affiliation: | (College of Water Conservancy and Hydmpower Engineering, Hohai University, Nanjing 210098，Jiangsu, China) |
| |
| Abstract: | When pump system operates in a free outflow mode,the level of the outlet cross-section piezometer during the hydraulic transient process is different from the level that basically invariable during the operation mode of submerged discharge.Taking the outlet section as a special hydraulic element,the hydraulic transient process under the free outflow mode of pump system is calculated herein with the method of characteristics.For a same pump,it is known from the calculation made on the water hammer during the... |
| |
| Keywords: | pumping station water hammer calculation free outflow submerged discharge |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《水利水电技术》浏览原始摘要信息 |
|
点击此处可从《水利水电技术》下载全文 |
