摘要
在水力深穿透工具喷管送进系统结构分析的基础上建立了系统受力模型, 得出控制喷管送进的基本参数关系。分析了喷管在喷孔内的受力, 指出喷管在喷孔内所受的阻力是影响喷管送进的主要因素, 据此调节喷管送进控制液缸控制腔的压力可控制送进速度和限制最大推力。喷管在喷孔内主要处于承受轴向张力状态, 喷嘴对喷管的牵引作用是柔性喷管能顺着喷孔送进到较大深度的主要原因。保证喷嘴、喷管结构的轴对称性是防止喷管后段成为受压缩状态、乃至导致摩擦锁止的关键。
After a structural analysis of the jet pipe feeding system for hydraulic deep penetrating, the force model of the system is set up, and the fundamental parameters for controlling the jet pipe feeding are obtained. The force on the jet pipe in the hole jetted is analyzed, and it is indicated that the resistance on the jet pipe is the main factor influencing the feeding of jet pipe. Therefore the feeding speed can be controlled and maximal pushing force can be restricted by regulating the pressure of the hydraulic cylinder. The flexible jet pipe advances along the jetted hole with the tractive effort of the nozzle. Thus ensuring axial symmetry of the nozzle and jet pipe in the structure design is the key of preventing the jet pipe from being pressed and locked.
出处
《石油机械》
北大核心
2005年第5期7-9,83,共3页
China Petroleum Machinery
基金
CNPC科学研究与技术开发项目"水力深穿透射孔技术研究"的部分内容
项目编号: 2001412-20