第24届亚洲国际动力传动与控制展览会

(PTC ASIA 2019)技术评述

中国液压气动密封件工业协会专家委员会

Technology Review of PTC ASIA 2019

China Hydraulics Pneumatics & Seals Association

(西城区太平街甲2号, 北京100050)

摘要：该文汇总了液压、气动、密封行业有关专家在第24届亚洲国际动力传动与控制展览会期间，从各自专业的角度的所见所闻、体会感受和对行业发展的建议。

关键词：流体传动与控制；展览会；技术评述；液压；气动；密封件

中图分类号：TH137；TH138；TB42文献标志码：B文章编号：1008-0813（2020）01-0001-12

基于Fluent的线切割机床管道流场分析

曹劲草

（陕西国防工业职业技术学院，陕西西安710300）

摘要：线切割机床在加工工件的过程中，需要不断喷出工作液对工件进行降温、除渣、绝缘。在此过程中，工作液循环系统常常会发生排水不畅的现象。以CTW320TB线切割机床排水管道为主要研究对象，采用UG软件建模，在Fluent软件模拟不同入口流速下管道内的压力分布情况以及管道出口处的流速分布情况，并以此来分析线切割机床管道排水不畅的

原因。

关键词：线切割机床；管道；Fluent；压力；流速

中图分类号：TH137文献标志码：A文章编号：1008-0813（2020）01-0012-04

Flow Field Analysis of WEDM Machine Tool Pipeline Based on Fluent

CAO Jin-cao

(Shaanxi Institute of Technology, Xi’an710300, China)

Abstract: In the process of the machining by WEDM Machine Tool, work pieces need to be

 cooled, insulated and cleaned by working fluid ejecting continuously. In this process, working fluid circulation system often appears poor drainage. So we take the drainage pipeline of CTW320TB WEDM Machine Tool as the object of study, use UG to model, and then simulate the pressure distribution in the pipeline and velocity distribution of the pipelines outlet in the Fluent. Finally, we use this simulation to analyse the reason of poor drainage.

Key words: WEDM machine tool; pipeline; Fluent; pressure; velocity

旁通泄漏与摆动式叶片马达最低稳定角速度的关系

张远深¹，苏广煜¹，王旭龙¹，滕学燕¹，钱隆²，白晶³

（1.兰州理工大学能源与动力工程学院，甘肃兰州730050；

2.兰州理工大学技术工程学院，甘肃兰州730050；

3.中联重科股份有限公司，陕西渭南714000）

摘要：摆动式叶片马达的内泄漏量直接影响其输出角速度大小；文章建立了带有旁路泄漏通道摆动马达的传递函数；在系统传递函数建立过程中，以马达工作腔输入流量为输入，马达输出角速度为输出，考虑旁通泄漏模型以及马达摩擦力矩模型，推导出马达最低稳定速度的表达式；通过分析旁路泄漏通道的参数对于马达最低稳定运行速度的影响，从而给出马达最低稳定速度与马达内泄漏、旁路泄漏通道参数之间的关系，并提出了马达最低稳定速度对应输入流量的计算方法。

关键词：液压；摆动式叶片马达；最低稳定速度；旁路泄漏通道

中图分类号：TH137  文献标志码：A  文章编号：1008-0813（2020）01-0016-05

The Relationship between Bypass Leakage and Minimum Stable Angular Speed of

Swing Vane Motor

ZHANG Yuan-shen¹, SU Guang-yu¹, WANG Xu-long¹, TENG Xue-yan¹, QIAN Long², BAI Jing³

(1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou730050, China;2. Technical Engineering College of Lanzhou University of Technology, Lanzhou730050, China;3. Zoomlion Heavy Industry Science, Weinan714000, China）

Abstract: The internal leakage of the oscillating vane motor directly affects the output angular velocity; The Present Paper establishes the transfer function of the oscillating motor with the bypass leakage channel; In the process of establishing the system transfer function, taking the input flow of the motor working chamber as the input and the output angular velocity of the motor as the output, considering the bypass leakage model and the motor friction torque model, the expression of the minimum stable velocity of the motor was derived. By analyzing the influence of the parameters of the bypass leakage channel on the minimum stable velocity of the motor, the relationship between the minimum stable velocity of the motor and the parameters of the leakage channel inside the motor and the bypass leakage channel is given, and the calculation method of the input flow corresponding to the minimum stable running speed of the motor is proposed.

Key words: hydraulic; swing vane motor; minimum stable speed; bypass leakage channel

某液压活动油源车的安全性设计研究

虞军胜，何刘宇，王品，刘士成

（北京航天发射技术研究所，北京100076）

摘要：某液压活动油源车在特种车辆生产和调试过程中起着辅助动力源的关键作用，其安全可靠性就显得尤为重要。结合活动油源车的构成，对其液压控制系统原理进行分析，从裕度安全性、冗余容错安全性、防差错安全性、使用安全性和安全可靠性等方面总结安全性设计要点，并对其安全可靠性指标进行计算，满足设计指标要求。针对该活动油源车的安全性分析和总结，有利于改进完善和提高设备安全性，对其他液压系统安全性设计也提供一些借鉴和参考。

关键词：活动油源车；安全性；液压系统；研究

中图分类号：TH137文献标志码：A文章编号：1008-0813（2020）01-0021-05

Research on Safety Design of a Hydraulic Movable Oil Source Vehicle

YU Jun-sheng, HE Liu-yu, WANG Pin, LIU Shi-cheng

(Beijing Institude of Space Launch Technology, Beijing100076, China)

Abstract: A hydraulic movable oil source vehicle plays a key role in the production and commissioning of special vehicles, and its safety is particularly important. Combined with the composition of movable oil source vehicle, the principle of its hydraulic control system is analyzed. The safety design points are summarized from margin safety, redundant fault tolerant safety, error-proof safety, use safety and safety reliability, and the safety and reliability indexes are calculated to meet the design requirements. In view of the safety analysis and summary of the movable oil source vehicle, it is helpful to improve the safety of equipment, and also provides some reference for other hydraulic system safety design.

Key words: movable oil source vehicle; safety; hydraulic system; research

柱塞副微观表面对间隙油膜压力的影响

张培珍^1，2，冀宏^1，2，袁强^1，2，韦春晖^1，2

（1.兰州理工大学能源与动力工程学院，甘肃兰州730050；

2.甘肃省液压气动工程技术研究中心，甘肃兰州730050）

摘要：根据分形理论中的W-M函数建立柱塞与缸体孔表面三维形貌数学模型，并利用MATLAB软件编写程序，分析分形维数对表面微观形貌的影响。将柱塞副间隙油膜沿轴向展成平面，建立油膜厚度及压力分布计算模型，采用有限体积法求解二维雷诺方程，分析粗糙度对柱塞副间隙油膜压力分布的影响。结果表明：随着分形维数的增加，柱塞表面粗糙度呈增加趋势，且表面粗糙度越大，压力峰值越大。

关键词：柱塞副；分形理论；间隙流动；油膜压力

中图分类号：TH137文献标志码：A文章编号：1008-0813（2020）01-0025-04

Effect of Plunger Pair Micro Surface on Clearance Oil Film Pressure

ZHANG Pei-zhen^1,2, JI Hong^1,2 , YUAN Qiang^1,2, WEI Chun-hui^1,2

（1. College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou730050, China；2. Hydraulic and Pneumatic Engineering Technology Research Center of Gansu Province, Lanzhou730050, China）

Abstract: According to the W-M function of fractal theory, the mathematical model of three-dimensional surface topography of plunger and cylinder bore was established. The program was written by using MATLAB software to analyze the influence of fractal dimension on the surface topography. The oil film in the clearance of the plunger pair is developed into a plane along the axis, and the calculation model of oil film thickness and pressure distribution is established. The finite volume method is used to solve the two-dimensional Reynolds equation, and the influence of roughness on the oil film pressure distribution in the clearance of the plunger pair is analyzed. The results show that the surface roughness of plunger increases with the increase of fractal dimension, and the greater the surface roughness, the greater the peak pressure.

Key words: plunger pair; fractal theory; gap flow; oil film pressure

3000HP型钻井泵液力端阀盘模型有限元仿真分析

张洪生，武文凯

（兰州理工大学机电工程学院，甘肃兰州730050）

摘要：阀盘是钻井泵液力端的重要组成部件，了解到阀盘在钻井泵的正常工作时经常产生疲劳，造成失效。用三维建模软件Solidworks建立钻井泵泵阀阀盘的三维实体模型。利用ANSYS Workbench软件对阀盘模型实际工作中的受力情况进行了有限元分析求解，得到阀盘在40 MPa高压力下的应力云图和变形云图。与阀盘材料作比较，校核表明，阀盘的强度和刚度满足要求。

关键词：3000HP型钻井泵；阀盘模型；有限元

中图分类号：TH137;TE926文献标志码：A文章编号：1008-0813（2020）01-0029-03

Finite Element Simulation Analysis of Valve Disk for 3000HP Drilling Pump

ZHANG Hong-sheng, WU Wen-kai

(School of Mechanical Engineering, Lanzhou University of Technology, Lanzhou730050, China)

Abstract: The importance of valve disc to the hydraulic end of drilling pump is introduced, and the fatigue and failure of valve disc during the normal operation of drilling pump are understood. The three-dimensional solid model of the valve disc of drilling pump is established by using the 3D modeling software Solidworks. According to the force condition of the pump valve in the actual working condition of the drilling pump, the corresponding constraints and loads are applied to the valve disc model, and the valve disc model is analyzed and solved by finite element method (FEM) with the help of ANSYS Workbench software. The stress and deformation images of valve disc under high pressure of 40MPa are obtained. Compared with the disc material, the check shows that the strength and stiffness of the disc meet the requirements.

Key words: 3000HP; drilling pump; valve disc model; finite element

负流量阀、变功率阀集成设计与应用

熊文才，苗蕾，陈经跃，黄玖琦，张琰，李奕宁

（航空工业西安飞行自动控制研究所，陕西西安710065）

摘要：针对负流量控制轴向柱塞泵，介绍一种负流量阀与变功率阀的集成设计，能有效提高液压泵的功率重量比、降低制造成本、提高响应时间、增强产品可靠性。文中详细介绍了液压泵的工作原理、集成设计方案、建立数学模型计算和AMESim仿真，并通过样机试验验证其设计的可行性。

关键词：轴向柱塞泵；负流量阀；变功率阀；比例电磁阀

中图分类号：TH137文献标志码：A文章编号：1008-0813（2020）01-0031-05

Negative Flow Valve and Variable Power Valve Integrated Design and Application

XIONG Wen-cai, MIAO Lei, CHEN Jing-yue, HUANG Jiu-qi, ZHANG Yan, LI Yi-ning

(AVIC Xi’an Flight Automatic Control Research Institute, Xi’an710065, China)

Abstract: For negative flow control axial piston pump, an integrated design of negative flow valve and variable power valve, it can effectively improve the power-weight ratio, reduce manufacturing cost, improve response time and enhance product reliability. The hydraulic pump working principle, integrated design scheme, mathematical model calculation and AMESim simulation is introduced in this article, and according to the prototype test and verify the feasibility of the design scheme.

Key words:axial piston pump; negative flow valve; variable power valve; proportional electromagnetic valve

液压支架用电液换向阀的动态特征及流场特性仿真分析

祝坚

（中煤科工集团北京华宇工程有限公司，北京100120）

摘要：为了提高液压支架的机械控制能力，利用电液换向阀完成支架控制箱动作控制。该文采用流体动力学仿真了电液换向阀的动态特征及流场特性。研究结果表明：当时间到达 0.14 s 时二级阀芯发生运动，出口流量快速增大至一个峰值状态；随着阀芯到达一个稳定运动状态后，换向阀也达到 1013 L/min的稳定出口流量。换向阀在高压大流量系统内工作时将会快速到达 峰值压力，产生液压冲击作用并使支架立柱受到破坏。当流体由阀套流至阀芯时因为过流断面的面积会迅速降低，使压力下降4.1 MPa，形成压力集中损失的区域，同时在阀芯的主流道区域还会形成均匀的压力分布状态。从阀口的下游最初进入阀芯的主通道位置时将达到最大流速，等于 109 m/s，表明该部位形成了最小的过流面积。

关键词：电液换向阀；仿真；动态特征；流场特性

中图分类号：TH137文献标志码：A文章编号：1008-0813（2020）01-0036-04

Simulation Analysis of Dynamic Characteristics and Flow Field Characteristics of

Electro-hydraulic Directional Valve for Hydraulic Support

ZHU Jian

(China Coal Science and Industry Group Beijing Huayu Engineering Co., Ltd., Beijing100120, China)

Abstract: In order to improve the mechanical control ability of the hydraulic support, electro-hydraulic directional control valve is used to complete the action control of the support control box. In this paper, the dynamic characteristics and flow field characteristics of electro-hydraulic directional valve are simulated by fluid dynamics. The results show that when the time reaches 0.14 s, the secondary spool moves and the outlet flow increases rapidly to a peak state. After the spool reaches a stable motion state, the reversing valve also reaches a stable outlet flow rate of 1013 L/min. The reverse valve will quickly reach the peak pressure when working in the high pressure and large flow system, which will produce the hydraulic impact and destroy the support column. When the fluid flows from the valve sleeve to the spool, the area of the flow cross section will be rapidly reduced, resulting in a pressure drop of 4.1 mpa, forming a pressure loss concentration area, and at the same time, a uniform pressure distribution state will be formed in the mainstream channel area of the spool. The maximum flow rate, equal to 109 m/s, will be reached when entering the main channel of the spool from the downstream of the valve orifice, indicating that the minimum flow area is formed at this position.

Key words: electro-hydraulic directional valve; simulation; dynamic characteristics; flow field characteristics

气缸缸筒连续涂油装置实现

程妍,杜强,姜猛

（费斯托气动有限公司，山东济南250000）

摘要：为了满足气缸的使用性能要求、产品成本以及生产节拍的需求，该文简要介绍了一种气缸缸筒连续涂油装置的设计原理，针对气缸缸筒的特点及涂油要求，应用此自动连续涂油装置，较好地实现了涂油过程，取得了预期效果。

关键词：气缸缸筒；连续；涂油；装置

中图分类号：TH138文献标志码：A文章编号：1008-0813（2020）01-0039-02

Design of the Continuous Greasing Device of Cylinder Barrel

CHENG Yan， DU Qiang， JIANG Meng

(Festo Production Ltd., Jinan 250000, China)

Abstract: In order to meet the requirements of the usage performance, the product cost, and the turk time of the cylinder, this paper briefly introduces a design principle of the continuous greasing device. According to the characteristics of the cylinder barrel and the requirement of the greasing, Festo Pneumatics Production Ltd., uses this continuous greasing device and gets a better expected results.

Key words: cylinder barrel; continuous; greasing; device

工程机械液压阀再制造工艺流程研究

曾亿山¹，郝云锋¹，闵玉春²，张强¹

（1.合肥工业大学机械工程学院，安徽合肥230009；

2.安徽博一流体传动股份有限公司，安徽合肥230031）

摘要：工程机械液压阀是控制工程机械运动的关键性元件，每年因失效退役的液压阀数量十分巨大。再制造是再生资源利用的高级形式，是现代制造业中的新兴产业，有利于节约能源和资源、降低制造成本和促进环保，具有非常重要的国家战略意义。该文以多路换向阀为例，概述了液压阀再制造工艺流程中的清洗，拆解，检测，再制造修复及装配入库的技术内容和关键方法，为液压阀的再制造研究提供了理论依据和实践基础。

关键词：再制造；失效形式；多路阀；工艺流程

中图分类号：TH137.52文献标志码：A文章编号：1008-0813（2020）01-0041-04

Reserach on Remanufacturing Process of Construction Machinrey Hydraulic Value

ZENG Yi-shan¹, HAO Yun-feng¹, MIN Yu-chun², ZHANG Qiang¹

(1. School of Mechanical Engineering, Hefei University of Technology, Hefei230009, China;

2. Anhui Boyi Fluid Power Transmission Joint Stock Co., Ltd., Hefei230031, China)

Abstract: Hydraulic value of construction machinery is the key element to control the movement of construction machinery. The number of hydraulic values decommissioned each year due to failure is very large. Remanufacturing is an advanced form of renewable resource utilization and a new industry in modern manufacturing. Also it is conducive to saving energy, reducing production costs and protecting the environment. It has extremely important national strategic significance. In this paper, the multi-way reversing value is taken as an example to summarize the technical contents and key methods of cleaning, dismantling, testing, remaufacturing and assembling in the remanufacturing process, has provided theoretical and practical basis for remanufacturing of hydraulic values.

Key words: remanufacturing; failure form; multi-way value; process

基于多自由度气动机械手位置伺服系统稳定性控制研究

高红英，林希，樊爱珍

（陕西工业职业技术学院，陕西咸阳712000）

摘要：基于传统易碎薄板机械手位置伺服控制系统稳定性低、自动化分拣效率低等不足，设计了一种基于笛卡尔坐标式的气动码垛机器手和位置伺服稳定性控制系统。首先，设计并介绍笛卡尔坐标式码垛机械手的基本组成结构，对机械手末端吸盘气动回路控制系统进行设计和分析；然后分别对机械手X、Y、Z三个方向的伺服电机控制原理进行分析并设计了一种位置伺服系统的前馈自适应控制算法；最后，将传统位置闭环PID算法和前馈自适应控制算法进行位置跟踪稳定性对比试验。实验结果表明该笛卡尔坐标式的气动码垛机器手和位置伺服稳定性控制系统设计合理，满足实际生产要求。

关键词：机械手；位置伺服；气动回路；稳定控制；PID；前馈自适应

中图分类号：TH138；TP241文献标志码：A文章编号：1008-0813（2020）01-0045-05

Study on Stability Control of Position Servo System with Multi-DOF Pneumatic Manipulator

GAO Hong-ying, LIN Xi, FAN Ai-zhen

(Shaanxi Polytechnic Institute, Xianyang712000, China)

Abstract: Based on the lack of stability of the position servo control system of traditional fragile sheet manipulator and the low efficiency of automatic sorting, a servo stability control system of pneumatic palletizing machine based on Cartesian coordinate type is designed. Firstly, the basic structure of Cartesian coordinate palletizing manipulator is designed and introduced, and the pneumatic loop control system of manipulator end suction Cup is designed and analyzed, then the control principle of servo motor in three directions of Manipulator X, Y and z is analyzed and a feedforward adaptive control algorithm of position servo system is designed. Finally, The traditional position closed-loop PID algorithm and Feedforward Adaptive control algorithm are used to compare the position tracking stability test. The experimental results show that the Cartesian coordinate pneumatic palletizing machine hand and position servo stability control system is designed reasonably to meet the actual production requirements.

Key words: manipulator; position servo; pneumatic circuit; stability control; PID; feedforward adaptive

基于有限元的液压铰接接头拧紧力矩计算

张宏宇，张平，张涛华，秦岭，丁丹

(北京航天发射技术研究所，北京100076)

摘要：针对基于均匀截面应力的铰接接头拧紧力矩工程计算无法充分考虑径向孔等局部结构应力集中效应，计算结果不准确的问题，建立液压铰接接头拧紧过程静强度计算有限元模型，通过在螺纹段定义固定约束，螺母与基体间定义接触约束，施加拧紧力矩及对应的螺纹预紧力载荷，模拟真实受力工况。依据线性强度计算模型下应力结果与施加载荷成正比的关系，确定材料许用应力对应的拧紧力矩，为铰接接头等存在应力集中结构的及接头类产品拧紧力矩确定和结构设计校核提供参考。

关键词：铰接接头；拧紧力矩；有限元分析；强度计算

中图分类号：TH137;U463.33文献标志码：A文章编号：1008-0813（2020）01-0050-03

Tightening Torque Calculation of Hydraulic Hinge Fittings Based on FEA

ZHANG Hong-yu, ZHANG Ping, ZHANG Tao-hua, QIN Ling, DING Dan

(Beijing Institute of Technology, Beijing100076, China)

Abstract: The static strength FEA model of hydraulic hinge fittings tightening procedure was built to solve the problem that engineering calculation method based on uniform section stress distribution assumption could not fully cover the stress concentration factors induced by structures such as radical orifices and failed to obtain proper tightening torque. Fixed and contact constraints were applied to the screw and interfaces of the hexagon head and the frame respectively with the torque and relating screw pretension loads to simulate the real stress state. The proper tightening torque corresponding to the permissible stress was obtained by the calculation results and the proportional relation of stress and loads under the linear model assumption, providing reference to tightening torque confirmation and structure design of fittings with stress concentration including hinge fittings.

Key words: hinge fittings; tightening torque; FEA; strength verification

基于MOOC的《液压与气动技术》精品资源库在课程教学中的应用研究

王维英，陆新

（无锡工艺职业技术学院，江苏宜兴214200）

摘要：精品资源库是信息化教学中的重要内容，《液压与气动技术》精品资源库经过多年建设，内容丰富、功能齐全，投入使用后获得师生一致好评。该文讲述基于MOOC的精品资源库在课程教学中的应用情况，并探讨产生的积极效果和不足之处，为后续更好服务教学提供研究依据。

关键词：精品资源库；课程教学；应用情况；积极效果；不足

中图分类号：TH137;TH138；G642.0文献标志码：A文章编号：1008-0813（2020）01-0053-03

Research on the Application of “Hydraulic and Pneumatic Technology” Boutique

Resource Library Based on MOOC in the Course Teaching

WANG Wei-ying, LU Xin

(Wuxi Institute of Arts and Technology, Yixing214200, China)

Abstract: The boutique resource library is an important part of information teaching. The “Hydraulic and Pneumatic Technology” boutique resource library has been built for many years, with rich content and complete functions. It has been well received by teachers and students after being put into use. This paper describes the application of MOOC-based boutique resource library in the course teaching, and discusses the positive effects and shortcomings, it provides research basis for the subsequent better service teaching.

Key words: boutique resource library; course teaching; application situation; positive effect; shortcoming

实用型气动旋转装夹工作台的设计

王占辉

（蚌埠液力机械有限公司，安徽蚌埠233000）

摘要：该设计实例为一种气动旋转装夹工作台，详细介绍该装置的设计思路，分析其结构和动作原理。该装置在实际应用中,完全满足了特殊工况需求,性能稳定,具有一定的推广价值。

关键词：气动装夹；旋转台；夹具；设计

中图分类号：TH138文献标志码：A文章编号：1008-0813（2020）01-0056-03

Design of Practical Pneumatic Rotary Clamping Table

WANG Zhan-hui

（Bengbu Yeli Machinery Co., Ltd., Bengbu233000, China）

Abstract: This design example is a pneumatic rotary clamping table. The design idea of the device is introduced in detail, and its structure and operation principle are analyzed. In practical application, the device fully meets the needs of special working conditions, has stable performance and has certain popularization value.

Key words: pneumatic clamping; rotary table; fixture; design

斗轮取料机液压控制系统的故障分析及改进

包更旺

（大连华锐重工集团股份有限公司液压装备厂,辽宁大连116035）

摘要：针对臂式斗轮取料机运行中抖动现象，进行了故障分析和排除，并对其液压原理和元件选型进行了优化及改进，为相关液压系统的故障分析和设计选型提供参考。

关键词：取料机；悬臂抖动；液压控制系统；改进

中图分类号：TH137文献标志码：A文章编号：1008-0813（2020）01-0058-02

Fault Analysis and Improvement of Bucket-wheel Reclaimer Hydraulic Control System

BAO Geng-wang

（Hydraulic Equipment Plant, Dalian Huarui Heavy Industry Group Co., Ltd., Dalian116035, China）

Abstract: In this paper, the fault that dithering phenomenon of boom-type bucket-wheel reclaimer in operation was analysed and solved. This paper optimizes and improves on the hydraulic principle and components selection, furthermore, provides the reference for the fault analysis and hydraulic design.

Key words: reclaimer; boom dithering; hydraulic control system; improvement

改进型小通径管路密封结构的系列化研究

李鹏飞，夏志海，田浩玲

Serialization Research of the New Fine Line Sealing Structure

LI Peng-fei, XIA Zhi-hai, TIAN Hao-ling

（中国航发西安动力控制科技有限公司，陕西西安710077）

摘要：针对航空工业系统中常用的小通径管路密封结构：金属球面密封结构、锥面密封结构、胶圈径向及轴向密封结构、密封垫结构，其存在密封结构易损，返修成本高，密封状态无法调整等缺陷。该文综合分析了常用密封结构密封机理，讨论了其密封失效导致介质泄漏的原因。基于常用管路系统结构密封，研制出新的系列化的端面密封结构。通过工程实践成功的将此结构应用于航空工业燃油及气路系统中，解决了泄漏问题，证明了其工程实用价值。

关键词：密封；胶圈；系列化；泄漏

中图分类号：TB42文献标志码：B文章编号：1008-0813（2020）01-0060-04

浅谈“冲洗”对密封的影响

于平超

（丹东克隆集团有限责任公司，辽宁丹东118008）

摘要：机械密封产品在石油化工、炼油、食品等行业已经得到普遍推广和使用，机械密封在保证设备的安全运转的同时，为企业节约了大量的维护、维修成本，提高了企业的效益。在新的市场环境下，市场对机械密封性能及其使用寿命提出了新的要求，机械密封的性能及其使用寿命，与其选型、结构、选材、工况环境等因素都密不可分，除此之外，正确选择和设计“冲洗”能起到提高机械密封性能和延长机械密封使用寿命的作用。

关键词：冲洗；冲洗孔；冲洗压力；冲洗流量

中图分类号：TB42文献标志码：A文章编号：1008-0813（2020）01-0063-02

Brief Talk about the Influence of “Flushing” on Seal

YU Ping-chao

(Dandong Colossus Group Co., Ltd., Dandong118008, China)

Abstract: Mechanical seal products in petrochemical, oil refining, food and other industries have been widely popularized and used, Mechanical seal can not only ensure the safe operation of equipment, but also save a lot of maintenance and repair costs for enterprises, improve the efficiency of the enterprise. In the new market environment, the market has proposed new requirements on mechanical seal property and service life, the property and service life of the mechanical seal with its type selection, structure, material, working condition of the environment factors are inseparable, in addition, the correct selection and design of “wash” can improve the mechanical seal property and prolong the service life of mechanical seal.

Key words: flushing; flushing hole; flushing pressure; flushing flow

密封相关术语解读

梁小凤¹，黄乐¹，闫志旭²

（1.广州机械科学研究院有限公司，广东广州510700；2.广州宝力特密封技术有限公司，广东广州510700）

摘要：随着密封技术的快速发展，正确理解和应用密封相关术语非常重要，例如“组合”和“复合”、 “密封件”和 “密封装置”等。另外ISO标准中某些术语的定义，与我国目前相关产品的制造工艺存在不完全一致情况。其次，有些产品的术语和定义，在不同的国家标准中，定义不同。该文通过增加相关产品图、安装图、对比不同标准中的术语和定义等，介绍流体传动系统中与密封相关的部分术语及其定义。并对某些在国家标准中存在异义待修订的术语和定义做出说明，为相关的读者提供借鉴。

关键词：密封件；密封装置；术语；定义

中图分类号：TB42文献标志码：A文章编号：1008-0813（2020）01-0065-05

Interpretation of Sealing Terminology

LIANG Xiao-feng¹, HUANG Le¹, YAN Zhi-xu²

(1. Guangzhou Mechanical Engineering Research Institute Co., Ltd., Guangzhou510700, China;2. Guangzhou BLT Sealing Technology Co., Ltd., Guangzhou510700, China)

Abstract: With the rapid development of sealing technology, it is very important to correctly understand and apply the terms related to sealing. For example, “composite” and “bonded”, “seal” and “sealing device” etc. In addition, the definitions of some terms in ISO standards are inconsistent with the current manufacturing process of related products in China. Secondly, the terms and definitions of some products are different in different national standards. This paper introduces some terms and definitions related to seal in fluid transport system by adding relevant product drawings, installation drawings and comparing terms and definitions in different standards. Some terms and definitions with different meanings to be revised in national standards are explained, which can be used for reference by relevant readers.

Key words: seals; sealing device; terms; definitions

水压往复密封面临仿真问题

殷图源，魏大盛

（北京航空航天大学能源与动力工程学院,北京100191）

摘要：该文对水压往复柱塞密封仿真现状进行了调研，得出了目前油压密封仿真较为成熟，而水压密封仿真薄弱的结论。由于水的低粘度及物理特性使水压密封成膜难，仿真需要对密封物理组成建立系统性和精细化的模型。水压密封流态一般为混合润滑，剖析了两种低粘度介质流态的判别方法，揭示了润滑流态转换条件及表现特征。在仿真过程中指出了Reynolds方程应考虑惯性项，给出了几种Reynolds方程适用性及求解数值方法，论述了数值方法的特点。分析了成膜密封磨损机制，粗糙度大小是影响磨损程度主因。提出了借助实验建立较完善仿真模型观点，以提高仿真模型置信度。明晰了仿真在密封设计中优化作用，运用传统油压理论处理水压密封等效性问题需进一步探讨，提出了未来水压密封面临探索性问题。

关键词：水压往复密封；水压密封仿真；水压密封流态；水压密封数值方法；完备理论模型

中图分类号：TH137；TB42文献标志码：A文章编号：1008-0813（2020）01-0069-06

Hydraulic Water Reciprocating Seal Simulation Problems

YIN Tu-yuan, WEI Da-sheng

（School of Energy and Power Engineering, Beihang University, Beijing100191, China）

Abstract:In this paper have investigated the current situation of the hydraulic reciprocating plunger seal simulation, it is concluded that the current hydraulic seal simulation is relatively mature, and hydraulic pressure seal weak simulation conclusion.Due to the low viscosity and physical properties of water makes the water pressure sealing film, simulation need to seal the physical composition of systemic and refinement of the model is established. Hydraulic seal flow is commonly mixed lubrication, analyzes the two kinds of low viscosity medium flow pattern identification method, reveals the lubricant flow pattern transition conditions and performance characteristics. In pointed out the Reynolds equation should be considered during the process of simulation of inertia, the applicability and several Reynolds equation solving numerical method, this paper discusses the characteristics of numerical method. Film seal wear mechanism is analyzed, the roughness of size is the degree of wear. Better simulation model is established with the help of test point of view, in order to improve the simulation model is confidence. Clearing the simulation in seal design optimization, by using the theory of traditional hydraulic processing hydraulic sealing equivalence problems need further discussion, put forward the hydraulic sealing exploratory problem in the future.

Key words: hydraulic reciprocating seal; seal hydraulic simulation; flow state in hydraulic seal; hydraulic pressure seal numerical method; the complete theoretical model

关于对油缸活塞杆动密封外泄漏的设计改进

李瑞生，蒋拓，黄仲正，高名乾

（柳州柳工液压件有限公司，广西柳州545006）

摘要：该文通过理论计算，借助仿真分析和台架实验与整机实验，对某机型工程机械油缸外泄漏的失效原因进行分析，认识到在杆密封方案选型合理及工艺加工符合图纸要求的前提下，油液从杆动密封处外泄漏的原因除了油液里面的杂质损坏杆动密封之外，杆动密封处的外泄漏一般是以“油环”状形式间歇的向外泄漏。通过在静止状态下对油缸杆串联动密封各密封圈间的压力测试及在往复运动过程中对油缸串联杆密封各密封圈间收集的油膜油液“泵回吸” 回油缸内腔的动态分析。得出除了杂质导致油液外泄外，合理设置各密封圈与活塞杆之间的间隙S和密封圈唇口前间隙为S的相对表面长度L，是降低油缸杆密封外泄漏的关键核心因子。

关键词：动密封；外泄漏；泵回吸；油环；动压轴承

中图分类号：TH137；TB42文献标志码：A文章编号：1008-0813（2020）01-0075-04

Design Improvement of Cylinder Rod Seal for External Leakage

LI Rui-sheng, JIANG Tuo, HUANG Zhong-zheng, GAO Ming-qian

（Liuzhou LiuGong Hydraulic Components Co., Ltd., Liuzhou545006, China）

Abstract: Through theoretical calculation, this paper analyzes the failure causes of the external leakage for a certain type of engineering machinery according to simulation analysis, bench test and machine experiment. It is recognized that under the premise of reasonable selection of rod seal scheme and meeting the requirements of drawing, the reason for oil leakage from rod dynamic seal is that the impurities in oil damage the seal of rod, and the leakage is usually intermittent in the form of “ring”. In the static state, the pressure between the series seal of the cylinder piston rod is measured, and the dynamic analysis of the oil film in the cylinder chamber during the reciprocating motion is carried out. It is concluded that besides the oil leakage caused by impurities, the key factor to reduce the leakage of cylinder rod seal is to reasonably set the clearance S between each seal ring and the relative length L before the lip of seal ring clearance S.

Key words: dynamic seal; external leakage; pump suction; ring; dynamic bearing

大型矿山机械用液压缸防尘圈研究与应用

唐闪，樊耀华，黄振华，王艳丽，火霏

(徐州徐工液压件有限公司技术中心，江苏徐州221004)

摘要：矿山设备一般用于露天环境，速度快、压力高、冲击大, 连续高强度作业，由于整机价格昂贵，且机型大，拆装难，对作为核心执行元件的液压缸可靠性要求很高。矿山机械极其恶劣的工况容易造成液压缸早期失效，为提高液压缸无故障工作时间和使用寿命，对液压缸的密封系统、防尘系统进行了研究分析和改进，并在澳大利亚西部矿区进行了应用验证，为恶劣工况防尘圈选用和设计提供了参考。

关键词：矿山机械；液压缸;防尘圈失效；骨架防尘圈

中图分类号：TH137；TB42文献标志码：A文章编号：1008-0813（2020）01-0078-03

Research and Application of Hydraulic Cylinder Dust-proof Ring forLarge Mining Machinery

TANG Shan, FAN Yao-hua, HUANG Zhen-hua, WANG Yan-li, HUO Fei

(Xuzhou XCMG Hydraulics Co., Ltd., Xuzhou221004, China)

Abstract: Mining equipment is generally used in open-air environment, with high speed, high pressure, high impact and continuous high strength operation. Due to the high price, large size and difficult disassembly, the reliability of the hydraulic cylinder as the core actuator is highly demanded. In order to improve the working time and service life of the cylinder without fault, the sealing system and dust-proof system of the cylinder were studied and improved, and the application verification was carried out in the western Australian mining area, which provided a reference for the selection and design of dust-proof rings under bad working conditions.

Key words: mining machinery; hydraulic cylinder; dust ring failure; skeleton dust ring

新型快开抗剪钢球密封结构研制

朱金花^1，2，戴兴旺^1，2，危书涛^1，2，姚佐权^1，2，崔军^1，2

（1.合肥通用机械研究院有限公司，安徽合肥230031；

2.国家压力容器与管道安全工程技术研究中心，安徽合肥230031）

摘要：该文开发了一种高压容器新型端部密封结构，采用抗剪钢球代替了现有的抗剪元件。分析了其结构特点，并对抗剪钢球进行了强度计算。研制了一台试验容器，通过液压试验对结构强度及密封性能进行了验证。理论分析和试验研究表明该结构可适用于快开高压容器的端部密封。

关键词：密封结构；高压容器；抗剪钢球；液压试验

中图分类号：TB42文献标志码：A文章编号：1008-0813（2020）01-0081-03

Development of a New Quick-opening Sealing Structure with

Sheer Steel Ball

ZHU Jin-hua^1,2, DAI Xing-wang^1,2, WEI Shu-tao^1,2, YAO Zuo-quan^1,2, CUI Jun^1,2

(1. Hefei General Machinery Research Institute Co., Ltd., Hefei230031, China;2. National Technical Research Center on Safety Engineering of Pressure Vessels and Pipelines, Hefei230031, China)

Abstract: A new end-closure structure with steel ball in high-pressure vessel was developed. The characters were discussed, and the strength of sheer ball was calculated. The structural strength and sealing property of test vessel were proved by hydraulictest. The theoretical analysis and experimental investigationspresented that this structure can be suitable for quick-opening high-pressure vessel and pipe.

Key words: sealing structure; high-pressure vessel; sheer steel ball; hydraulic test

基于有限元的电液舵机O形圈密封多参数耦合优化

熊力¹，张志彬²，刘银水²，付磊²

（1.湖北三江航天红峰控制有限公司，湖北孝感432000；

2.华中科技大学机械科学与工程学院，湖北武汉430074）

摘要：某型号弹载电液舵机采用 O形圈密封，其工作可靠性和使用寿命与O形圈密封性能密切相关。为了探究压缩率、槽口圆角和密封间隙在耦合条件下对其密封性能的影响，建立了二维有限元模型，施加了流体压力载荷，研究了压缩量、槽口圆角和密封间隙等参数对O形圈在承载时的等效应力和接触应力的影响，为密封结构的优化提供了理论依据。

关键词：O形圈；等效应力；接触应力；多参数优化

中图分类号：TH137；TB42文献标志码：A文章编号：1008-0813（2020）01-0084-04

Multi-parameter Coupling Optimization of O-ring Seal for Electro-hydraulic Steering Gear

Based on Finite Element Method

XIONG Li¹, ZHANG Zhi-bin², LIU Yin-shui², FU Lei²

(1. Hubei Sanjiang Aerospace Red Peak Control Co., Ltd., Xiaogan432000, China;2. Huazhong University of Science and Technology School of Mechanical Science and Engineering, Wuhan430074, China)

Abstract: A certain type of missile-loaded electro-hydraulic steering gear adopts O-ring sealing, and its working reliability and service life are closely related to O-ring sealing performance. In order to investigate the effect of compression ratio, notch fillet and sealing gap on the sealing performance under coupling conditions, a two-dimensional finite element model was established and the fluid pressure load was applied. The effects of parameters such as compression amount, notch fillet and sealing gap on the equivalent stress and contact stress of the O-ring during loading were found. It provides a theoretical basis for the optimization of the sealing structure.

Key words: O-ring;equivalent stress;contact stress;multi-parameter coupled optimization

氮气缸密封改善

罗相文

（广东南方职业学院,广东江门529040）

摘要：应用密封圈设计原理，设计改善一种密封效果不佳的氮气缸，彻底根治密封不佳、容易漏气等故障，提高了气缸的密封性能。

关键词：密封；氮气缸；液压；U形圈

中图分类号：TH138;TB42文献标志码：A文章编号：1008-0813（2020）01-0087-02

Improvement of Oil-seal for Nitrogen Cylinder

LUO Xiang-wen

（Guangdong Nanfang Vocational College, Jiangmen529040, China）

Abstract: In the way of oil-seal design principle. Design a new seal and improve the Nitrogen leaking cylinder. Solve the seal weakness and easily leaking breakdown. and improve the oil-seal function.

Key words: seal; Nitrogen cylinder; hydraulic; U-seal