高温高压过热蒸汽疏水阀消声减振研究

李树勋;;赵子琴;张云龙

振动与冲击 ›› 2011, Vol. 30 ›› Issue (10) : 116-121.

PDF(1770 KB)
PDF(1770 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (10) : 116-121.
论文

高温高压过热蒸汽疏水阀消声减振研究

  • 李树勋1,2 ; 赵子琴1 ; 张云龙3
作者信息 +

Analysis of noise elimination and vibration damping in high temperature and pressure superheat steam trap

  • LI Shu-xun1,2; ZHAO Zi-qin 1; ZHANG Yun-long3
Author information +
文章历史 +

摘要

针对国内某公司的蒸汽疏水阀在高温高压过热蒸汽工况下产生的强振动高噪声问题,采用有限元法模拟高工况下蒸汽疏水阀内二维非定常湍流激振特性,基于时均化的流场计算和大涡模拟2种方法,模拟分析过热蒸汽疏水阀及管道产生湍流旋涡的主要因素,研究找出产生振动和噪声的流场诱因。根据频谱特性、噪声产生机理及节流降压原理,研究设计了低振动低噪声蒸汽疏水阀的节流降压消声器,并进行频谱分析,其消声量试验结果与理论分析相吻合,为设计出具有消声减振且性能优良的蒸汽疏水阀提供了可靠依据。

Abstract

Strong vibration and high noise were generated in high temperature and pressure superheat steam trap of domestic company. Numerical simulation with finite element method was used to analyze the unstationary characteristic of inner 2D field for the steam trap. Based on the two methods of time-average flow analysis and large eddy simulation(LES),it was found the main factors of vibration and noise in steam trap. According to the characteristic of the frequency spectrum of the noise signal, mechanism with the high acoustic level and principle of throttle step-down ,throttle injection muffler of low vibration and noise steam trap was designed, and the spec-trum analysis was implemented. The results of numerical analysis match with the theoretical analysis ,which pro-vides the reliable basis for the noise elimination vibration damping and capability choiceness.

关键词

过热蒸汽疏水阀 / 数值模拟 / 流动特性 / 节流降压 / 消声减振

Key words

superheat steam trap / numerical simulation / flow characteristics / throttle step-down / noise elimination and vibration damping

引用本文

导出引用
李树勋;;赵子琴;张云龙. 高温高压过热蒸汽疏水阀消声减振研究 [J]. 振动与冲击, 2011, 30(10): 116-121
LI Shu-xun;ZHAO Zi-qin;ZHANG Yun-long. Analysis of noise elimination and vibration damping in high temperature and pressure superheat steam trap [J]. Journal of Vibration and Shock, 2011, 30(10): 116-121

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