超高压柱塞泵柱塞副热压耦合特性
Thermal-Pressure Coupling Characteristics of Plunger Pair in Ultra-high Pressure Plunger Pump
夏宏新 1王淑平 1曾先顺 1丁华 1王义亮1
作者信息
- 1. 太原理工大学机械工程学院,山西太原 030024
- 折叠
摘要
为探究柱塞副热压特性对柱塞密封性能的影响,基于热流固耦合分别建立柱塞副热主导模型和热压耦合模型,结合黏温黏压效应分析了不同负载压力下的间隙形变与泄漏量.结果表明:柱塞副最大间隙发生在间隙入口端,仅受压形变影响,与热形变无关,柱塞副最小间隙发生在距间隙出口约 1/10 处,热形变占比约 80%,压形变占比约 20%;热压耦合作用下,随着负载压力的升高,柱塞副最大间隙增大,最小间隙持续减小,从而增加柱塞副卡死风险;对柱塞母线进行间隙补偿修形的方法可以改善柱塞副形变问题,从而有效地解决柱塞副出口端卡死的问题.
Abstract
In order to investigate the influence of the thermal-pressure characteristics of the plunger pair on the sealing perform-ance of the plunger,a thermal dominant model and a thermal-pressure coupling model were established based on the heat-fluid-solid coupling,combining the viscous-temperature-viscous-pressure effect,the clearance deformation and the leakage rate of the fluid in the clearance were analyzed under different loading pressures.The results show that the maximum clearance of the plunger pair occurs at the inlet of the clearance,which is only affected by pressure deformation and is not related to thermal,and the minimum clearance of the plunger pair occurs about 1/10 from the outlet of the clearance,the thermal deformation effect is about 80%and pressure deformation effect is about 20%;under the thermo-pressure coupling model,the maximum clearance of the plunger pair increases with the increase of the loading pressure,the minimum clearance decreases and the risk of seizing increases;the clearance compensation modified method of the plunger busbar can improve the problem of plunger pump deformation,which can effectively solve the seizing problem of the plunger pair outlet end.
关键词
超高压柱塞泵/柱塞副/热压耦合/修形柱塞Key words
ultra-high pressure plunger pump/plunger pair/thermal-pressure coupling/modified plunger引用本文复制引用
出版年
2024
NETL
NSTL
万方数据