Effect of sealing surface wear on the performance of V-shaped combined sealing ring

doi:10.3785/j.issn.1006-754X.2023.00.017

Chin J Eng Design

2023, Vol. 30

Issue (2): 237-243 DOI: 10.3785/j.issn.1006-754X.2023.00.017

Modeling, Simulation, Analysis and Decision

Effect of sealing surface wear on the performance of V-shaped combined sealing ring

Yi ZHANG(

),Siyang XIONG,Sipeng ZHONG,Zijie XIONG,Qiang YANG

School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China

Download:

HTML

PDF(3127KB)
Export: BibTeX | EndNote (RIS)

Abstract

The wear of the sealing surface has a significant impact on the sealing performance of V-shaped combined sealing ring. A finite element model of the V-shaped combined sealing ring was established. Based on the characteristics of rapid wear in areas with high contact pressure and the movement of the area with greater wear towards the air side, the contact pressure distribution of the sealing ring under different wear states was studied by modifying the contour of the V-shaped ring in the finite element simulation process to represent the different wear states of the V-shaped combined seal. Considering the coupling effect between deformation of V-shaped combined sealing ring and lubricating oil film, based on the elastohydrodynamic lubrication theory, an elastohydrodynamic lubrication mathematical model for V-shaped combined sealing ring was established. Based on the small deformation theory, the elastic deformation of the sealing ring under high pressure was obtained by the deformation influence coefficient matrix method. The oil film pressure distribution and thickness distribution in the working process of the sealing ring were solved by the finite difference method, and the influence of the wear and roughness of the sealing surface on the lubrication performance of the combined sealing ring was analyzed. A V-shaped combined sealing ring performance test bench was built to obtain the friction torque and leakage rate of the sealing ring under mild and moderate wear conditions at different motor speeds, and the test results were compared with the simulation results. The results showed that as wear intensified, the pressure and thickness of the oil film near the lubricating oil side increased; for seals that had already undergone wear, an increase in roughness would increase the oil film pressure; an increase in motor speed would increase the frictional torque and leakage rate of the sealing ring. The research results provide a reference for improving the performance of V-shaped combined sealing ring.

Key words： elastohydrodynamic lubrication model wear roughness rotary seal ring

Received: 27 April 2022 Published: 06 May 2023

CLC:

TQ 336.42

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Yi ZHANG
	Siyang XIONG
	Sipeng ZHONG
	Zijie XIONG
	Qiang YANG

Cite this article:

Yi ZHANG,Siyang XIONG,Sipeng ZHONG,Zijie XIONG,Qiang YANG. Effect of sealing surface wear on the performance of V-shaped combined sealing ring. Chin J Eng Design, 2023, 30(2): 237-243.

URL:

https://www.zjujournals.com/gcsjxb/10.3785/j.issn.1006-754X.2023.00.017 OR https://www.zjujournals.com/gcsjxb/Y2023/V30/I2/237

密封面磨损对V形组合密封圈性能的影响

密封面磨损对V形组合密封圈的密封性能有显著影响。建立了V形组合密封圈的有限元模型，基于V形圈接触压力大的地方磨损较快且磨损较大的区域向空气侧移动的特点，在有限元仿真计算中通过修改V形圈的轮廓来表示V形组合密封圈不同的磨损状态，进而研究密封圈在不同磨损状态下的接触压力分布情况。考虑到V形组合密封圈变形与润滑油膜之间的耦合作用，基于弹性流体动压润滑理论，建立了V形组合密封圈弹流润滑数学模型。基于小变形理论，通过变形影响系数矩阵法得到V形组合密封圈在高压作用下的弹性变形，通过有限差分法求解了密封圈在工作过程中的油膜压力分布和厚度分布，分析了密封面磨损和粗糙度对组合密封圈润滑性能的影响。搭建了V形组合密封圈性能实验台，得到了在轻度和中度磨损状态下密封圈在不同电机转速下的摩擦扭矩和泄漏率，并将实验结果与仿真结果进行对比。结果表明：随着磨损加剧，靠近润滑油一侧油膜的压力和厚度增大；对于已经发生磨损的密封圈，粗糙度的提高会使其油膜压力增大；转速提高会使密封圈所受的摩擦扭矩和泄漏率增大。研究结果为提高V形组合密封圈的性能提供了参考。

关键词： 弹流润滑模型, 磨损, 粗糙度, 旋转密封圈

Fig.1 Structure of V-shaped combined sealing ring

Fig.2 Schematic of lubricating oil film of V-shaped combined sealing ring

参数	量值
l	0.74 mm
b	1.75 mm
聚四氟乙烯表面粗糙度R_a_seal	1.6 μm
聚四氟乙烯均方根粗糙度 $σ s e a l$	2 μm

Table 1 Contact surface parameters of V-shaped ring

Fig.3 Simulation diagram of the distribution of rough height of contact surface of V-shaped ring

Fig.4 Grid division result of V-shaped combined sealing ring model

Fig.5 Schematic of V-shaped ring contour under different wear conditions

Fig.6 Cloud diagram of contact pressure between V-shaped ring and shaft under different wear conditions

Fig.7 Normal deformation coefficient matrix of V-shaped ring

Fig.8 Process for elastohydrodynamic lubrication numerical calculation

Table 2 Operating conditions parameters for elastohydrodynamic lubrication

Fig.9 Oil film pressure and thickness under different degrees of wear

Fig.10 Oil film pressure and thickness under different roughness

Fig.11 Performance test bench of V-shaped combined sealing ring

Fig.12 Effect of motor speed on the friction torque of V-shaped combined sealing ring

Fig.13 Effect of motor speed on the leakage rate of V-shaped combined sealing ring


[1]	吴长贵，索双富，张开会，等.基于ABAQUS的航空作动器VL密封圈有限元分析［J］.液压与气动，2016（1）：60-65. doi：10.11832/j.issn.1000-4858.2016.01.012 WU C G， SUO S F， ZHANG K H， et al. Aircraft actuator VL seal finite element analysis based on ABAQUS［J］. Chinese Hydraulics & Pneumatic， 2016 （1）： 60-65. doi: 10.11832/j.issn.1000-4858.2016.01.012

[2]	徐敏，徐时贤，陆明，等.磨损对VL结构密封性能的影响分析［J］.液压气动与密封，2019，39（2）：45-48，53. doi：10.3969/j.issn.1008-0813.2019.02.013 XU M， XU S X， LU M， et al. Influence of wear on the sealing performance of VL structure［J］. Hydraulics Pneumatics & Seals， 2019， 39（2）： 45-48， 53. doi: 10.3969/j.issn.1008-0813.2019.02.013

[3]	欧阳小平，薛志全，彭超，等.航空作动器的VL密封特性分析［J］.浙江大学学报（工学版）， 2015， 49（9）：1755-1761. doi：10.1016/j.carbon.2015.03.024 OUYANG X P， XUE Z Q， PENG C， et al. Performance analysis on VL seal in aircraft cylinder［J］. Journal of Zhejiang University （Engineering Science）， 2015， 49（9）： 1755-1761. doi: 10.1016/j.carbon.2015.03.024

[4]	HAI S， HEIKO P， UWE S， et al. Wear and friction of PTFE seals［J］. Wear， 1999， 224（2）： 175-182. doi：10.1016/S0043-1648（98）00306-8 doi: 10.1016/S0043-1648（98）00306-8

[5]	SUI P C， ANDERLE S. Optimization of contact pressure profile for performance improvement of a rotary elastomeric seal operating in abrasive drilling environment［J］. Wear， 2011（9/10）： 2466-2470. doi：10.1016/j.wear.2011.02.021 doi: 10.1016/j.wear.2011.02.021

[6]	BURKHART C， EMRICH S， KOPNARSKI M， et al. Excessive shaft wear due to radial shaft seals in lubricated environment. Part I： Analysis and mechanisms［J］. Wear， 2020，460-461： 203419.

[7]	GRÜN J， FELDMETH J， BAUER F. Wear on radial lip seals： A numerical study of the influence on the sealing mechanism［J］. Wear， 2021， 476： 203674.

[8]	BÉKÉSI N， VÁRADI K. Wear simulation of a reciprocating seal by global remeshing［J］. Periodica Polytechnica Mechanical Engineering， 2010， 54（2）： 71-75.

[9]	张付英，郭威，初宏怡.润滑条件下油封的磨损预测［J］.机械设计与研究， 2021， 37（1）：97-101. ZHANG F Y， GUO W， CHU H Y. Prediction of radial lip seal wear under lubricating conditions［J］. Machine Design & Research， 2021， 37（1）： 97-101.

[10]	杨化林，孙维威，李修隆.往复式骨架油封密封界内油膜压力和厚度分布［J］.润滑与密封，2020，45（7）：36-40. YANG H L， SUN W W， LI X L. Distribution of film pressure and thickness in the sealing interface of reciprocating skeleton oil seal［J］. Lubrication Engineering， 2020， 45（7）： 36-40.

[11]	景国权，田建辉，孙金绢，等.微尺度油膜动密封研究［J］.西安工业大学学报， 2019， 39（5）：547-552. JING G Q， TIAN J H， SUN J J， et al. Study on micro-scale dynamic seal of oil film［J］. Journal of Xi'an Technological University， 2019， 39（5）： 547-552.

[12]	NIKAS G K. Elastohydrodynamics and Mechanics of rectangular elastomeric seals for reciprocating piston rods［J］. Journal of Tribology， 2003， 125 （1）： 60-69.

[13]	SALANT R F， MASER N， YANG B. Numerical model of a reciprocating hydraulic rod seal［J］. Journal of Tribology， 2007， 129（1）： 91-97.

[14]	HAJJAM M， BONNEAU D. Influence of the roughness model on the thermo-elasto-hydrodynamic performance of lip seals［J］. Tribology International， 2006， 39（3）： 198-205.

[15]	钟凯超.基于TEHL理论的液压动密封性能的研究［D］.哈尔滨：哈尔滨工业大学，2017：12-29. ZHONG K C. Research on the performance of hydraulic dynamic seal based on TEHL theory［D］. Harbin： Harbin Institute of Technology， 2017： 12-29.

[16]	DOWSON G， HIGGINSON G R. Elastohydrodynamic lubrication［C］. Oxford： Pergamon， 1977： 235.

[17]	王晓晶，陈帅，孙宇微，等.连续回转电液伺服马达组合密封特性研究［J］.华中科技大学学报（自然科学版），2019，47（4）：55-60. WANG X J， CHEN S， SUN Y W， et al. Research on combined sealing characteristics of continuous rotary electro-hydraulic servo motor［J］. Journal of Huazhong University of Science and Technology （Natural Science Edition）， 2019， 47（4）： 55-60.

[18]	孙健伟.高温高速旋转轴接触式密封材料研制及其密封性能研究［D］.哈尔滨：哈尔滨工业大学，2014：88-106. SUN J W. Development of high temperature and high speed rotating shaft contact sealing material and its sealing performance［D］. Harbin： Harbin Institute of Technology， 2014： 88-106.

[19]	ROELANDS C J A. Correlational aspects of the viscosity-temperature-pressure relationship of lubricating oils［J］. Journal of Lubrication Technology， 1971， 97（1）： 209-210.

[20]	韩传军，胡洋，张杰，等.齿形滑环密封圈力学性能分析及结构改进［J］.润滑与密封， 2018， 43（11）：86-92. doi：10.3969/j.issn.0254-0150.2018.11.016 HAN C J， HU Y， ZHANG J， et al. Mechanical properties analysis and structure improvement of tooth and sliding ring combined seals［J］. Lubrication Engineering， 2018， 43（11）： 86-92. doi: 10.3969/j.issn.0254-0150.2018.11.016

[21]	吴长贵，索双富，黄乐，等.航空作动器VL密封圈唇口接触压力分析［J］.液压气动与密封，2015，35（7）：18-21. doi：10.3969/j.issn.1008-0813.2015.07.006 WU C G， SUO S F， HUNNG L， et al. Lip contact stress analysis of aircraft actuator VL seal［J］. Hydraulics Pneumatics & Seals， 2015， 35（7）： 18-21. doi: 10.3969/j.issn.1008-0813.2015.07.006

[1]	Jiang LIU,Zheng-ming XIAO,Long-long ZHANG,Wei-biao LIU. Transmission accuracy reliability analysis and parameter optimization of RV reducer considering cycloid gear wear[J]. Chin J Eng Design, 2022, 29(6): 739-747.

[2]	Xiao-hua ZHU,Cong LI,Wei-ji LIU,Bin TAN,Wen XU. Study on bottom hole thermal-fluid-solid coupling of PDC bit in strong abrasive formation[J]. Chin J Eng Design, 2022, 29(4): 446-455.

[3]	Jin-nan LU,Yang LIU,Lian-jie WANG,Run-kun YANG,Zhen-zhi DING. Research on shovel tooth wear detection based on improved Mask Scoring R-CNN[J]. Chin J Eng Design, 2022, 29(3): 309-317.

[4]	LUO Yan-yan, PAN Xiao-song, MA Xuan, WU Xiong-wei. Research on application of infrared thermal imaging technology in plug-in wear detection of electrical connector[J]. Chin J Eng Design, 2021, 28(5): 615-624.

[5]	LIU Shu-qin, LIU Ruo-chen, SUN Jian-zhong, ZHANG Jin-wu. Research on on-line electrostatic monitoring method for wear state of wind turbine gearbox[J]. Chin J Eng Design, 2021, 28(2): 163-169.

[6]	DENG Xiao-fan, REN Cheng-zu, CHEN Yang, CHEN Guang, CAI Zhi-jie, HE Ying-lun. Research on material selection of lapping tools for double-disc and linear-groove lapping method based on friction and wear experiment[J]. Chin J Eng Design, 2020, 27(6): 720-728.

[7]	MA Ya-chao, ZHANG Peng, HUANG Zhi-qiang, NIU Shi-wei, XIE Dou, DENG Rong. Prediction of dynamic wear trend of PDC bit under the influence of varying temperature and load[J]. Chin J Eng Design, 2020, 27(5): 625-635.

[8]	LIU Ruo-chen, XU Cheng, WANG Kui-yang, WANG Yi-min, SUN Jian-zhong. Research on performance parameters of new wear-site electrostatic sensor[J]. Chin J Eng Design, 2020, 27(5): 645-653.

[9]	ZHANG Qiang, LIU Zhi-heng, WANG Hai-jian, ZHANG He-zhe. Research on wear degree recognition of picks based on multi feature signal fusion[J]. Chin J Eng Design, 2018, 25(3): 278-287.

[10]	CHEN Ya-jun, LONG Wei, YANG Shao-hua, CHAI Hui, JU Shao-hua. Effect of roughness on continuous directional transport of fluid in microchannel[J]. Chin J Eng Design, 2018, 25(3): 321-329.

[11]	LI Yan-kui, LÜ Yan-ming, NI Ming-ming. The wear analysis of precision blasting die for aviation blades based on orthogonal test[J]. Chin J Eng Design, 2017, 24(6): 632-637.

[12]	TIAN Jia-lin, LIU Gang, LIU Si-lu, ZHOU Kun, HUANG Jun-hang, SUN Ye, LIU Yan-qiu, YANG Jia-jun. Geometric properties and three-dimensional rock-breaking mechanics of a new ring-embedded PDC drill bit[J]. Chin J Eng Design, 2017, 24(1): 70-76.

[13]	ZHANG Yan-qiang, LI Xiu-hong, REN Jia-jun, TAN Bin. Wear analysis on bucket tooth of WK-75 mining excavator[J]. Chin J Eng Design, 2015, 22(5): 493-498.

[14]	ZOU Yu-jing，CHANG De-gong. Friction coefficient analysis of involute spur gears with consideration of dynamic load and surface roughness[J]. Chin J Eng Design, 2014, 21(3): 285-291.

[15]	FENG Wei, HE Shi-Zhong. Testing study on relationship of characteristic information in tribological system[J]. Chin J Eng Design, 2011, 18(4): 288-292.

Viewed

Full text

Abstract

Cited

Shared

Discussed