关于锥阀芯稳态液动力方向的分析

摘要

Based on the current different understanding about the direction of steady-state flow force on cone valve,the external flow and internal flow direction of steady-state flow force on cone valve is analyzed by using the theorem of momentum.The results show that the internal flow steady-state force of cone valve and the external flow are pointing to the direction of valve closed.At the same time,the paper points out the reason of wrong judging of internal flow cone valve about the steady-state force in textbook,it is due to the inconsistent of valve body benchmark and the unclear definition of internal flow way.%针对目前内流式锥阀稳态液动力方向的不同认识,运用动量定理对外流式和内流式锥阀稳态液动力方向进行了分析,结果表明,内流式锥阀稳态液动力与外流式一样都是指向阀口关闭的方向.同时指出了教科书中内流式锥阀稳态液动力方向判断错误的原因,是由于阀体基准选择不一致和内流方式定义不明确等造成的.