基于扬程定义的密封端面螺旋槽泵送效应分析  

Pumping effect analysis of spiral groove on seal loop face based on head definition

作　　者：陈汇龙[1] 李亚南[2] 赵斌娟[1] 翟晓[1] 黄建平[1] 袁寿其[2] 

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013 [2]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《排灌机械工程学报》2010年第1期83-87,共5页Journal of Drainage and Irrigation Machinery Engineering

基　　金：江苏省自然科学基金资助项目(BK2007095);江苏省高校自然科学基础研究项目(06KJB480019)

摘　　要：基于水泵的扬程定义,结合端面机械密封的特点对扬程定义式进行了简化修正,给出了描述端面螺旋槽液体机械密封泵送效应的表达式,揭示了泵送效应与端面静压分布的关系.应用Fluent软件对密封环端面间的流场进行了数值模拟,根据模拟的结果验证了泵送效应表达式的准确性和适用性;结合数值模拟的结果和上述表达式,对比了在旋转环和静止环两种情况开槽时数值模拟的结果,分析了密封端面螺旋槽开槽端面的不同对螺旋槽泵送效应的影响,发现在旋转环端面开槽时螺旋槽产生的泵送效应优于在静止环端面开槽的情况,且在旋转环端面开槽有利于减小密封环端面间的摩擦.Based on head concept for pumps, the formula for pumping capability of spiral groove on seal loop face was conducted by modifying the defined head formula with consideration of the face mechanical sealing characters, which shows the pumping capability is related with the static pressure distribution on the face. Numerical simulation for the inner flow of the mechanical face seal was carried out by using Fluent software, and the results proved the correctness and applicability of the modified formula. The pumping capabilities of the spiral grooves were analyzed combining the simulation results and the modified formula, and the different simulation results of spiral grooves pumping capability on different loops were compared. It shows that the pumping capability on the rotating loop is better than that on the static one, and the former condition is also better for reducing the friction between the two loops.

关 键 词：螺旋槽 机械密封 泵送效应 数值模拟 扬程 

分 类 号：TH136[机械工程—机械制造及自动化]