2000米全液压岩心钻机下放钻杆过程中液压系统热平衡分析  

Analysis on Heat Balance of Hydraulic System of 2000m Full-hydraulic Core Drilling Machine in the Process of Drill Pipe Sending

作　　者：张旭 冉恒谦[1] 刘凡柏[1] 李文秀[1] 

机构地区：[1]中国地质科学院勘探技术研究所,河北廊坊065000

出　　处：《探矿工程（岩土钻掘工程）》2010年第11期29-31,共3页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：国家"863"计划重点项目"2000米地质岩心钻探关键技术与装备"(项目编号:0607课题编号:2007AA060701)

摘　　要：钻机在下放钻杆过程中,做了大量负功,钻杆势能几乎全部转化为钻机液压系统的热能,这部分热量是很大的,将对钻机的液压系统造成极大危害。因此,对整个能量转化和散热过程进行分析非常必要。通过对下放钻杆过程的能量转化和液压系统发热、散热过程进行较详细的分析,提出了有等差数列形式热量输入的液压系统的散热函数,并以实测和计算数据验证了散热器的选型。Drilling machine does a lot of negative work in sending drilling pipes down into the well.Nearly all the potential energy of the drilling pipe converts into the huge thermal energy of the hydraulic system.Therefore,it is necessary to analyze the process of energy conversion and heat radiation.This paper analyzes the complete process,proposes a heat radiation function of the hydraulic system with the arithmetic progression heat importation and validates the rational selection of radiator with measured and calculated data.

关 键 词：下放钻杆 液压系统 能量转化 热平衡 

分 类 号：P634[天文地球—地质矿产勘探]