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xing ye wen zhai
Author(s): 
Pages: 247-253
Year: Issue:  4
Journal: Underground Water

Keyword:  研制成功供水系统地下水水压割管器工程勘察过滤器液力偶合器封隔器工作原理综合勘察;
Abstract: <正> 供水系统大口径井管起拔有望一种可切割口径为219mm井管的水压割管器由建设部综合勘察院研制成功,其工作原理是利用调压孔来调整泵压,推进活塞,通过连杆使扁心体在滑道中向下滑动。与此同时,滑道向两侧平移,刀片从刀体管伸出。随着钻具的转动,刀片合金对井管内壁进行切割。当管壁被切透,水从泄压孔排出,泥浆泵压力表指针回零。
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