基于热固耦合的压裂泵泵头体工作特性研究  

Research on Working Characteristics of Pump Body of Fracturing Pump Based on Thermal-solid Coupling Analysis

作　　者：周思柱[1] 廖建敏[1] 李宁[1] 崔灏[1] 

机构地区：[1]长江大学机械结构强度与振动研究所,荆州434000

出　　处：《科学技术与工程》2015年第25期38-43,共6页Science Technology and Engineering

基　　金：国家自然科学基金项目(51374041)资助

摘　　要：压裂泵泵头体是压裂工艺装备中的重要组成部分,其承载能力对压裂工艺技术的发展具有较大影响。针对泵流体吸入排出运动特性分析,建立了柱塞以及输出流量的运动规律曲线,完成了泵头体的热传递以及热变形分析。基于workbench软件热固耦合方法,获得了泵头体内腔的温度场以及应力应变分布场。结果表明:内腔温度场沿水平方向热传导速率最快;泵头体内部结构之间的相互约束及结构的应力集中性是导致温度场热应力产生原因,主要分布在内腔表面以及沿表层内侧厚度60 mm范围内;热应力的存在提高了整个内腔壁面的应力,但对相贯线处应力有一定改善作用。从热固耦合角度研究泵头体正常工况下承载性能,为泵头体的设计提供新思路。ing capacity The pump head of fracturing pump is an important part of fracturing process equipment, so the bear- of pump body has an influence on fracturing process technology view of the motion characteristic of pump body inhalation and excretion, the motion regularity＇ s curves of plunger and output flow are set up and the thermal transmission and thermal deformation of pump body are done. Based on the method of thermosetting cou- pling with workbench software, the field of temperature of stress and strain in the inner cavity at pump body are ob- tained. The results are shown that the thermal conductivity of temperature field in the cavity is fast along the hori- zontal direction, and the reason for thermal stress formed is the mutual constraint and stress concentration in the in- ner structural of pump body, which the distribution of thermal stress is located in the surface of cavity and the thick- ness scope of 60 mm along the cavity inside. The stress in the surface of cavity is increased but decreased in the in- tersecting line through thermal load and working load comprehensive action. It provides a new thought for pump body design to research the bearing capacity of pump body in the normal condition from the perspective of thermosetting coupling.

关 键 词：泵头体 运动规律 热分析 热固耦合 

分 类 号：TE933.3[石油与天然气工程—石油机械设备]