论文部分内容阅读
ДКФ型钻具是供钻进7级以下强胶结、软硬互层、含磷或其它粉矿层用的.它的最大特点是岩芯容纳管能够根据所钻岩石的物理机械性质自动地调整工作状态,相应地改变冲洗液在钻具内的流向流量,有效地提高了岩矿芯采取率和质量指标,减轻和简化了操作人员的工作. ??Φ型钻具由外管1、内管2、外钻头3、内钻头4、接头5、连接管6、接头7、接管8、外套9、碟形弹簧10、异径接头11、球阀19等组成(见图).外、内管的下端相应地拧接外、内钻头3、4,外管1上端经接头5和连接管6与接头7连接,此接头中借助轴承悬吊装置连接管8,其下与外套9相接.在外套9里装置碟形弹簧组
The ДКФ is designed for drilling strong cemented, soft and hard interbed, phosphorous or other fines below grade 7. Its greatest feature is its ability to automatically adjust to the physical and mechanical properties of the rock being drilled State, and accordingly change the flow of flushing fluid in the flow of drilling tools, effectively improve the rock core take rate and quality indicators, to reduce and simplify the work of the operator. Φ type drilling tool consists of an outer tube 1, the inner tube 2, outer drill bit 3, inner drill bit 4, joint 5, connecting pipe 6, joint 7, take over 8, jacket 9, disc spring 10, reducing joint 11, ball valve 19 and other components The lower end of the corresponding screwed outside, the drill 3, 4, the upper end of the outer tube 1 is connected via a joint 5 and the connecting pipe 6 and the connector 7, the connector by means of a bearing suspension connecting pipe 8, the lower phase with the jacket 9 in The jacket 9 is equipped with a disc spring set