管道泄漏水力瞬变模拟研究

Study on the Leak in the Hydraulic Transient Simulation of the Pipeline

当管道某处突然发生泄漏时,泄漏处将出现瞬态压力突降,形成一个负压波,并以一定的速度向管道上、下游两端传播。根据泄漏产生负压波的原理,利用VB语言编写了泄漏水力特性分析程序。以设定的管道为例,分析了因泄漏引起的水力瞬变特性,分析结果可以为准确定位泄漏点提供帮助。

When there is a leak point in the pipeline,the pressure is fallen and the negative pressure wave occurs at once. The negative pressure wave will transmit in pipeline and separately transmit to the first inspection point and the last inspection point. Based on VB language and the theory of the negative pressure wave of leak,the analytical procedure of the leaky hydraulic transient properties is written. The characteristic of hydraulic transient is analyzed in order to find leak point precisely for a special pipeline.