Performance comparison of self-pumping and spiral groove mechanical seals

doi:10.11949/j.issn.0438-1157.20160419

CIESC Journal ›› 2016, Vol. 67 ›› Issue (10): 4370-4377.DOI: 10.11949/j.issn.0438-1157.20160419

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Performance comparison of self-pumping and spiral groove mechanical seals

LU Jianhua¹, SUN Jianjun¹, CHEN Wei², MA Chenbo¹, YAN Yan¹

1 School of Mechanical and Electrical Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China;
2 Yangzhou Qiu Yuan Pressure Vessel Manufacturing Limited Company, Yangzhou 225115, Jiangsu, China

Received:2016-04-05 Revised:2016-05-10 Online:2016-10-05 Published:2016-10-05
Supported by:
supported by the National Natural Science Foundation of China (51375245, 51505230), the Natural Science Foundation of Jiangsu Province (BK20130976) and the Yangzhou City Industrial Prospective Study Program (YZ2014092).

自泵送机械密封与螺旋槽机械密封的性能比较

陆建花¹, 孙见君¹, 陈卫², 马晨波¹, 严彦¹

1 南京林业大学机械电子工程学院, 江苏南京 210037;
2 扬州秋源压力容器制造有限公司, 江苏扬州 225115

通讯作者: 孙见君
基金资助:
国家自然科学基金项目（51375245，51505230）；江苏省自然科学基金项目（BK20130976）；扬州市工业前瞻性研究计划项目（YZ2014092）。

Abstract

Abstract:

3D flow field dynamics of two hydrodynamic mechanical seals of self-pumping and spiral groove, which were based on "pumping in" principle, were simulated by Fluent software. Sealing properties of opening force and leakage rate were compared on these two seals at various structural and operating parameters. The numerical simulation results showed that, at the same structure and operating condition, the spiral groove mechanical seal had higher hydrodynamic effect and leakage rate but lower ratio of opening force over leakage rate than self-pumping mechanical seal. In terms of seal performance of opening force and leakage rate, the impact of both transverse structure parameters and rotating speed were significant to spiral groove mechanical seal but insignificant to self-pumping mechanical seal. The performance of hydrodynamic mechanical seals is more dependent on dimensions for spiral groove mechanical seal than for self-pumping mechanical seal.

Key words: mechanical seals, model, numerical simulation, CFD, opening force, leakage rate

摘要：

运用Fluent软件对泵入式自泵送机械密封与螺旋槽流体动压型机械密封进行三维流场动力学仿真分析，比较研究了两种流体动压型机械密封在不同几何参数和操作条件下的端面开启力和泄漏率。结果表明：在相同的结构和操作条件下，螺旋槽机械密封的动压效应和泄漏率均大于自泵送机械密封的相应值，其开启力与泄漏率的比值小于自泵送机械密封的相应值的比值；端面结构参数和转速对螺旋槽机械密封的开启力和泄漏率影响显著，对自泵送机械密封影响不明显。螺旋槽机械密封比自泵送机械密封在性能上具有更高的尺寸依赖性。

关键词: 机械密封, 模型, 数值模拟, 计算流体力学, 开启力, 泄漏率

CLC Number:

TH136

LU Jianhua, SUN Jianjun, CHEN Wei, MA Chenbo, YAN Yan. Performance comparison of self-pumping and spiral groove mechanical seals[J]. CIESC Journal, 2016, 67(10): 4370-4377.

陆建花, 孙见君, 陈卫, 马晨波, 严彦. 自泵送机械密封与螺旋槽机械密封的性能比较[J]. 化工学报, 2016, 67(10): 4370-4377.

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Performance comparison of self-pumping and spiral groove mechanical seals

自泵送机械密封与螺旋槽机械密封的性能比较

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