Study on structure optimization and performance improvement of Y-shaped water seal of rock drill

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL Industrial Lubrication and Tribology Pub Date : 2024-01-25 DOI:10.1108/ilt-11-2023-0366

Chun Qiang Jia, Aofei Wang, Ling Yu, Li Zong

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Abstract

Purpose

The rock drill’s drill tail experiences high-frequency fretting simultaneously in the rotational and axial directions. Due to the complex working characteristics and the low viscosity of the water medium, the pure water seal is susceptible to damage and failure. The purpose of this paper is to enhance the water seal’s performance.

Design/methodology/approach

The Y-shaped seal ring is modeled and simulated using orthogonal testing. Through analysis of the impact of various seal section parameters on sealing performance, the maximum contact stress and maximum Von Mises stress are selected as indicators of sealing effectiveness.

Findings

The maximum contact stress is proportional to lip thickness and chamfer length but inversely proportional to lip length. Meanwhile, the maximum Von Mises stress is directly influenced by lip depth and the included angle of the lip and drill tail but is inversely proportional to the lip thickness. The enhanced Y-shaped water seal sees reductions of 15% and 45% in maximum contact stress and maximum Von Mises stress, respectively.

Originality/value

This paper used analytical method and model that is helpful for design of the water seal’s structure in complex working characteristics and the low viscosity of the water medium.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-11-2023-0366/

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凿岩机 Y 型水封的结构优化和性能改进研究

目的凿岩机的钻尾在旋转和轴向同时发生高频摩擦。由于水介质的复杂工作特性和低粘度，纯水密封件很容易损坏和失效。本文旨在提高水封的性能。设计/方法/途径采用正交试验对 Y 形密封环进行建模和模拟。结果最大接触应力与唇边厚度和倒角长度成正比，但与唇边长度成反比。同时，最大 Von Mises 应力直接受到唇缘深度和唇缘与钻尾夹角的影响，但与唇缘厚度成反比。增强型 Y 形水封的最大接触应力和最大 Von Mises 应力分别降低了 15% 和 45%。原创性/价值本文采用的分析方法和模型有助于在工作特性复杂和水介质粘度较低的情况下设计水封的结构。同行评议本文的同行评议记录可在以下网址查阅：https://publons.com/publon/10.1108/ILT-11-2023-0366/

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来源期刊

Industrial Lubrication and Tribology 工程技术-工程：机械

CiteScore

3.00

自引率

18.80%

发文量

129

审稿时长

1.9 months

期刊介绍： Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.