第26届亚洲国际动力传动与控制技术展览会(PTC ASIA 2021)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 2021China Hydraulics Pneumatics & Seals Association

(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26届亚洲国际动力传动与控制技术展览会期间，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（2022）01-0001-13

深井环境下机械防砂性能测试装置的研发

刘宗恩¹，赵希春²，王建强¹，梁学进¹，孟虎²，耿凯丽²

（1.中国石油大学(华东)，山东青岛266400；

2.青岛石大华通科技有限公司，山东青岛266400）

摘要：机械筛管的性能对油井防砂的效果有着重要影响，测试机械筛管的挡砂能力及抗堵塞能力对机械筛管的选择有重要的指导意义；同时由于机械筛管处于地底环境，受温度、压力、砾石挤压等的影响，其挡砂能力及抗堵塞能力也会有所改变，获得这种变化趋势，可有效支持机械筛管的选择及设计。机械防砂性能测试装置能够测试评估机械筛管的挡砂能力，能够模拟各种地层、不同砾石充填深度、不同温度压力情况，测试在不同条件下机械筛管的挡砂能力，评估滤砂器的挡砂能力的变化趋势。

关键词：防砂；机械筛管；深井环境；防砂性能；测试装置

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0014-03

Research and Development of Testing Device for Mechanical Sand

Control Performance in Deep Well Surroundings

LIU Zong-en¹, ZHAO Xi-chun², WANG Jian-qiang¹,

LIANG Xue-jin¹, MENG Hu², GENG Kai-li²

(1. China University Petroleum, Qingdao266400, China;

2. Qingdao ShidaHuatong Science And Technology Co., Ltd., Qingdao266400, China)

Abstract: The performance of mechanical screen pipe has significant influences on the effects of sand control in oil well, and it is of great significance to test the sand-retaining ability and anti-blocking ability of the mechanical screen pipe for the selection of mechanical screen pipes. Considering that the working environment of mechanical screen is underground, its ability of sand-retaining and anti-blocking would be affected by the conditions of temperature, pressure, gravel extrusion, etc. Therefore, exploring the influence of underground environment on the performance of mechanical screen can provide a theoretical basis for the selection and design of mechanical screen. The testing device for mechanical sand control performance can test sand-retaining ability of the mechanical screen pipe under different conditions that the device can simulate, such as different kinds of formations, various gravel packing depths, different degree of temperatures and pressures.

Key words: sand control; mechanical screen pipe; deep well surroundings; sand control performance; testing device

外界磁场对磁流变阻尼器阻尼特性的影响

魏列江，梁汝健，强彦，卢利锋，柴铭堃

（兰州理工大学能源与动力工程学院，甘肃兰州730050）

摘要：针对磁流变阻尼器受到外界磁场作用时，阻尼特性发生变化导致其控制精度变差的问题。该文提出分析不同方向的外界磁场对磁流变阻尼器阻尼特性影响的理论方法，设计线性磁场发生器模拟外界磁场环境，通过实验对理论进行验证。理论与实验结果表明：当磁流变阻尼器受到与活塞运动方向垂直的外界磁场作用时，阻尼特性不受影响；当磁流变阻尼器受到与活塞运动方向水平的外界磁场作用时，随着外界磁场强度的增加，输出阻尼力随之增加；且输出阻尼力等于自身电流作用产生的阻尼力与外界磁场作用产生的阻尼力之和。

关键词：外界磁场；磁流变液；磁流变阻尼器；磁场发生器；阻尼特性

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0016-07

Influence of External Magnetic Field on Damping Characteristics of Magnetorheological Damper

WEI Lie-jiang，LIANG Ru-jian，QIANG Yan，LU Li-feng，CHAI Ming-kun

(College of Energy and Power Engineering， Lanzhou University of Technology， Lanzhou730050, China)

Abstract: When the magnetorheological damper is subjected to the external magnetic field, the damping characteristics change, which leads to the poor control accuracy. In this paper, the theoretical analysis method of the influence of external magnetic field in different directions on the damping characteristics of MR damper is proposed. A linear magnetic field generator is designed to simulate the external magnetic field environment, and the theory is verified by experiments. The theoretical and experimental results show that: When the magnetorheological damper is subjected to the external magnetic field perpendicular to the piston motion direction, the damping characteristics are not affected; But when the magnetorheological damper is subjected to the external magnetic field which is horizontal with the piston movement direction, the output damping force increases with the increase of the external magnetic field strength, and the output damping force is equal to the sum of the damping force produced by the current action and the external magnetic field action.

Key words: external magnetic field; magneto-rheological fluid; magneto-rheological damper; magnetic field generator; damping characteristics

海水泵球型配流阀冲蚀磨损的数值模拟研究

赵基宏，刘新强

（兰州理工大学能源与动力工程学院，甘肃兰州730050）

摘要：海水中存在大量污染物，其中悬沙颗粒会对海水液压元件造成不同程度的冲蚀磨损；配流阀的冲蚀磨损会降低海水泵的容积效率，使用离散项模型对水介质下悬沙颗粒对海水泵配流阀的冲蚀磨损现象进行数值模拟计算，研究阀口开度与入口流速对球型配流阀阀芯及阀座冲蚀磨损的影响。结果表明：不同阀口开度下阀座表面的冲蚀位置有明显差异，而阀芯表面冲蚀磨损位置几乎一致，阀芯及阀座的冲蚀率均随阀口开度的增大而减小;不同入口流速对与阀芯表面的冲蚀率影响更为显著。

关键词： 海水泵；配流阀；冲蚀磨损；数值模拟

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0023-05

Numerical Simulation of the Particle Erosion for Seawater Pump Ball Check Valve

ZHAO Ji-hong， LIU Xin-qiang

(College of Energy and Power Engineering，Lanzhou University of Technology， Lanzhou730050，China)

Abstract: There are a lot of pollutants in the seawater, among which the suspended sand particles will cause particle erosion on the seawater hydraulic components. The particle erosion in check valve will reduce the volumetric efficiency of the sea water pump. The discrete particle model was used to simulate the particle erosion of the check valve of the sea water pump by suspended sand particles, and the influence of the valve opening and inlet velocity on the particle erosion of the valve core and seat of the ball check valve. The results show that the particle erosion positions of the check valve seat surface are obviously different with different orifice openings, while the erosion positions of the valve core surface are almost the same. The erosion rates of both the valve core and the valve seat increase with the increase of orifice openings. The influence of different inlet velocity on the erosion rate of the valve core surface is more significant.

Key words: sea water pump; check valve; particle erosion; numerical simulation

基于带流量补偿器液动操车翻车机液压系统设计

张勇刚

（西安交通工程学院，陕西西安710065）

摘要：带流量补偿器液动操车翻车机液压系统设计是一种典型的自动化控制系统。采用负荷传感技术、三通流量补偿器的技术，自动匹配负载溢流压力，将系统效率最大化；采用常闭制动马达，断电自动保护，安全可靠，利用蓄能器开启制动器，采用电磁阀易于实现自动化，该液压系统能够提高工作效率，设备安全性、提高灵活适应性，提高自动智能性。

关键词：液动操车翻车机；流量补偿器；负荷传感技术；蓄能器；机电液一体化产品

中图分类号：TH137;TD421 文献标志码：A文章编号：1008-0813（2022）01-0027-03

Design on Hydraulic System of Hydraulic Car Dumper with Flow Compensator

ZHANG Yong-gang

(Xi'an Traffic Engineering Institute, Xi'an710065, China)

Abstract: The hydraulic system design of a hydraulic car dumper with a flow compensator is a typical automatic control system. It adopts load sensing technology and three-way flow compensator technology to automatically match the load overflow pressure to maximize system efficiency; it adopts a normally closed brake motor with automatic power failure protection, safe and reliable, and uses an accumulator to open the brake. The solenoid valve is easy to realize automation, and the hydraulic system can improve work efficiency, equipment safety, flexibility, adaptability, and automatic intelligence.

Key words: hydraulic car dumper; flow compensator; load sensing technology; accumulator; mechatronics products

基于Fluent探究污染颗粒对节流阀的冲蚀破坏

李森林¹，杨胜清^1,2，王素燕²，林博¹

（1.广西柳州机械股份有限公司，广西柳州545007；

2.兰州理工大学能源与动力工程学院，甘肃兰州730050）

摘要：该文主要研究液压油中的污染物颗粒对液压节流阀的冲蚀破坏。该文基于Fluent DPM多相流模型探讨了油液流动方向、进口流速、颗粒物(等效)直径、颗粒物形状因子对液压节流锥阀的冲蚀破坏影响。研究结果表明：正向流动冲蚀破坏主要发生在阀芯密封面，造成“麻点”破坏；反向流动主要发生在阀芯根部，造成“环状”破坏；在颗粒物等效直径为0.5 mm、形状因子从0.1变化到1的过程中，冲蚀破坏先增大后减小，形状因子φ为0.6时，破坏效果最明显；当形状因子φ≤0.6，冲蚀效果随颗粒等效直径的增大而增大，当颗粒形状因子φ>0.6，冲蚀效果随颗粒等效直径先增大后减小。

关键词：液压节流阀；冲蚀；形状因子；污染颗粒

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0030-07

Exploring the Erosion Damage of Pollution Particles to the Throttle Valve Based on Fluent

LI Sen-lin¹, YANG Sheng-qing^1,2, WANG Su-yan², LIN Bo¹

（1. Guangxi Liugong Machinery Co., Ltd., Liuzhou545007, China；

2. College of Energy and Power Engineering，Lanzhou University of Technology， Lanzhou730050，China）

Abstract: This paper mainly studies the erosion damage of hydraulic throttle by pollutant particles in hydraulic oil. Based on the Fluent DPM multiphase flow model, this paper discusses the influence of oil flow direction, inlet velocity, particle (equivalent) diameter, and particle shape factor on the erosion damage of hydraulic throttle poppet valve. The research results show that: the forward flow erosion damage mainly occurs on the valve core sealing surface, causing “pitting” damage; the reverse flow mainly occurs at the valve core root, causing “ring” damage; the equivalent diameter of particles is 0.5 mm, When the shape factor changes from 0.1 to 1, the erosion damage first increases and then decreases. When the shape factor φ is 0.6, the damage effect is the most obvious; when the shape factor φ≤0.6, the erosion effect increases with the equivalent diameter of the particle When the particle shape factor φ>0.6, the erosion effect first increases and then decreases with the particle equivalent diameter.

Key words: hydraulic throttle valve; erosion; shape factor; pollution particles

基于CFD的双三角形节流槽液压滑阀阀口稳态液动力的仿真分析

石金艳¹，范芳洪¹，张克昌¹，李辉²

（1.湖南铁道职业技术学院，湖南株洲412001；

2.四川川润股份有限公司，四川成都610031）

摘要：选取双三角形节流槽液压滑阀作为研究对象，运用软件STAR-CD对该阀内的流场进行仿真计算，得到该滑阀在不同阀口开度时的稳态液动力数值，计算结果表明：在该双三角形节流槽液压滑阀阀口的流入和流出方向，稳态液动力均让阀口趋于关闭，其数值在流出方向略大于流入方向，且射流角变化微小，稳态液动力随着流量增加而增加。

关键词：液压滑阀；CFD；双三角形节流槽；稳态液动力

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0036-03

Simulation Analysis of Steady Flow Force for Hydraulic Spool Valve

Double Triangle Slot Valve Port  Based on CFD

SHI Jin-yan¹, FAN Fang-hong¹, ZHANG Ke-chang¹, LI Hui²

（1. Hunan Railway Professional Technology College, Zhuzhou412001, China;

2. Sichuan Chuanrun Ltd., Chengdu610031, China）

Abstract: The Double Triangle slot hydraulic spool valve is selected as the research object, and the flow field in the double triangle slot hydraulic spool valve is simulated by using the fluid simulation software STAR-CD, the results show that in the inlet and outlet directions of the valve, both the steady-state hydrodynamic force makes the valve port close, the hydrodynamic force value is slightly larger in the outflow direction than in the inflow direction, and the change of the jet angle is slight, the hydrodynamic force increases as the flow rate increases.

Key words: hydraulic spool valve; CFD；double triangle slot; steady flow force

球面配流盘设计及仿真

熊文才

（航空工业西安飞行自动控制研究所，陕西西安710065）

摘要：球面配流因其结构紧凑、承载面积大，自位性能好，抗倾覆能力强，主要用于高压、高速液压泵或液压马达中。然而，球面配流结构复杂，相互制约的因素较多，球面配流设计存在一定的难度。该文通过对球面配流力学分析、过渡区设计，实现球面配流的初步建模，并在此基础上通过Pumplinx进行仿真优化与迭代，从而降低球面配流的设计难度和缩短研发周期。

关键词： 球面配流盘；液压泵；液压马达；力学模型；过渡区；Pumplinx

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0039-05

Spherical Valve Plate Design and Simulation

XIONG Wen-cai

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

Abstract: Spherical valve plate is mainly used in high pressure and high speed hydraulic pump or motor because of its compact structure, large bearing area, good self-aligning and strong anti-overturning ability. However, the spherical valve plate structure is complex, and there are many mutually restrictive factors, so it is difficult to design it. Based on the mechanical analysis and the design of transition zone, the preliminary modeling of spherical valve plate is realized in the paper. On this basis, the simulation optimization and iteration are carried out through Pumplinx, so as reduce the design difficulty of sphericalvalve plate and shorten the development cycle.

Key words: spherical valve plate; hydraulic pump; hydraulic motor; mechanical model; transition zone; Pumplinx

基于VL motion与AMESim的飞机起落架及舱门收放控制联合仿真

赵兴平，常凯，秦成，李巍

（航空工业第一飞机设计研究院，陕西西安710089）

摘要：该文以某型飞机起落架及舱门收放系统为研究对象，采用VL motion与AMESim软件分别对起落架运动机构和液压控制系统建立模型并进行联合仿真，利用联合仿真模型求解得到起落架及舱门收放时间和流量需求并验证其符合性。结果表明：通过基于VL motion与AMESim的联合仿真可完成起落架在预定时间内的收放功能，可为飞机起落架收放系统设计及部件参数优化提供参考。

关键词：起落架收放；控制；motion；AMESim；仿真

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0043-05

Co-simulation of Aircraft Landing Gear and Door Extraction/Retraction

Control Based on VL Motion and AMESim

ZHAO Xing-ping, CHANG Kai, QIN Cheng, LI Wei

（AVIC the First Aircraft Institute, Xi'an710089, China）

Abstract: In this paper took one landing gear and door extraction/retraction system of a typical aircraft as the study object, established the kinematics simulation models of landing gear extraction/retraction system and the hydraulic control system based on VL motion and AMESim software, and presented the co-simulation. By solving the co-simulation models obtained times of landing gear extraction/retraction and the requirements for flow and verified the compliance. The results show that the co-simulation based on VL motion and AMESim can be accomplished landing gear extraction/retraction function in the time frame given, and can provide a reference for aircraft landing gear extraction/retraction system design and can be optimized parameter.

Key words: landing gear extraction/retraction system; control; motion; AMESim; simulation

内置伸缩芯管的液压缸设计优化与产业化推广探究

赵书祥^1，2，王庆先^1，2，王贵^1，2，韩记生^1，2，刘朋³

（1.江苏集萃道路工程技术与装备研究所有限公司，江苏徐州221004；

2.公路建设与养护技术材料与装备交通运输行业研发中心（徐工集团），江苏徐州221004;

3.徐州徐工液压件有限公司，江苏徐州221004）

摘要：该文对内置伸缩芯管的液压缸进行了研究，分析了行业内仍在大范围应用的传统结构存在的缺陷，同时也对一种改进结构进行了简析，并分析了其跨产业推广应用的可能性。该文还对该液压缸适应各种工况所需进行的调整进行了介绍，并例举了沥青道路养护车可应用此结构之处。

关键词：液压缸；内置芯管；产业化

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0048-03

Research of the Hydraulic Cylinder with Telescopic Tube and Its Industrialization

ZHAO Shu-xiang^1，2, WANG Qing-xian^1，2, WANG Gui^1，2, HAN Ji-sheng^1，2, LIU Peng³

（1. Jiangsu JITRI Road Engineering Technology And Equipment Research Institute Co., Ltd.,

Xuzhou221004, China;

2. Highway Construction And Maintenance Technology, Materials And equipment Transportation

Industry R&D Center (XCMG)., Xuzhou221004, China;

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

Abstract: The paper researches on the hydraulic cylinder with telescopic tube. Some weak points of the widely-used traditional construction are analyzed， and one of the more reasonable construction are introduced as a solution. We also discussed the feasibility of the application in the cross-industry sectors. This paper also introduces the adjustment of the hydraulic cylinder to adapt to various working conditions, and illustrates the application of this structure in asphalt road microwave maintenance vehicle.

Key words: hydraulic cylinder; intermediate core tube; industrialization

一种大流量小压差高效负载敏感多路阀特性分析与研究

杨飞，刘彬，王晓虎，徐翊杰，谢欣武

（林德液压（中国）有限公司，山东潍坊261000）

摘要：阀后补偿型多路阀与负载敏感泵共同构成与负载无关的流量分配系统，常用于多执行机构的工程装备，但存在压力损失大，效率低的问题，并且通流能力较低，多在20 t以下机型上应用。该文通过试验方法研究了一种适用大流量的多路阀，结合该阀结构和系统原理，详细分析了该阀的工作原理，试验研究了该阀的内泄漏性能、压力损失性能、复合动作性能、流量-电流特性、动态特性，结果表明该阀具有良好的控制特性和较小的压力损失，为工程机械节能运行提供了基础数据和优化选择。

关键词：多路阀；负载敏感；特性；试验

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0050-05

Features Analysis and Research of Large Flow Small Differential Pressure

Efficient Load Sensing Multi-Way Valve

YANG Fei, LIU Bin, WANG Xiao-hu, XU Yi-jie，XIE Xin-wu

(Linde Hydraulics (China) Co., Ltd., Weifang261000, China)

Abstract: The post-compensation multi-way valve and the load sensing pump form a load-independent flow distribution system mainly used for multi-actuator engineering devices, but the system has the problems of high pressure loss, low efficiency and low flow capacity and is mostly applied to the excavators below 20 t. This article describes a multi-way valve applicable to high flow and researched through the experiment method, analyzes the operating principle of the valve by combining the valve structure and the system principle, and researches inner leakage performance, pressure loss performance, composite action performance, flow and control current characteristics and dynamic characteristics of the valve. Results show that the valve has good control characteristics and small pressure loss and provides foundation data and optimum choice for energy-saving operation of engineering machinery.

Key words: multi-way valve; load sensing; characteristic; testing

低压区压力高精度调节的PLC控制系统设计

江宁¹，赵国民²

（1.鄂州职业大学，湖北鄂州436000；2.哈尔滨大功率机车检修段，黑龙江哈尔滨150086）

摘要：根据压力机功能要求，利用压力闭环和压力速度双闭环实现低压区间高精度压力调节控制，在分析比例阀和压力传感器的特性曲线，油泵和伺服电机的工作能力特点基础上，提出利用PLC实现压力闭环和速度开环调节，多级分段控制方法，在低压区间保证了-3%到0的压力精度要求，介绍了编程中的关键技术和实现方法，在实际应用中取得良好的效果。

关键词：低压调节；闭环；高精度；PLC

中图分类号：TH137；TP211文献标志码：A文章编号：1008-0813（2022）01-0055-04

Design of PLC Control System for High-precision Pressure Adjustment in Low Pressure Zone

JIANG Ning¹，ZHAO Guo-min²

（1. Ezhou Polytechnic, Ezhou436000, China;

2. Harbin High-power Locomotive Maintenance Section, Haerbin150086, China）

Abstract: According to the functional requirements of the press, the pressure closed loop and the pressure speed double closed loop are used to achieve high-precision pressure regulation control in the low-pressure range. Based on the analysis of the characteristic curve of the proportional valve and the pressure sensor, the working capability of the oil pump and the servo motor, it is proposed to use PLC to realize the pressure. Closed-loop and speed open-loop adjustment, multi-stage segmented control method, guarantees the pressure accuracy requirement of -3% to 0 in the low pressure range, introduces the key technology and implementation methods in programming, and achieves good results in practical applications.

Key words: low pressure regulation; closed loop; high precision; PLC

螺旋钢带在发射车支腿热防护上的应用研究

谢文建，刘向阳，何寥，付曙光

（北京航天发射技术研究所，北京100076）

摘要：针对发射车热发射时支腿活塞杆存在表面烧蚀、变形的恶劣工况，该文采用一种金属螺旋钢带对活塞杆进行热防护，对其进行了防卡滞设计，并开展了可靠性试验和扬沙试验，最后通过装车进行发射试验验证，证明螺旋钢带能够对支腿活塞杆实现全方位保护，具有一定的工程应用价值。

关键词：支腿；螺旋钢带；可靠性试验；热防护

中图分类号：TH137.51文献标志码：A文章编号：1008-0813（2022）01-0059-05

Application of Spiral Steel Belt for Thermal Protection of Launch Vehicle Outriggers

XIE Wen-jian，LIU Xiang-yang，HE Liao，FU Shu-guang

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

Abstract: In view of the launch vehicle thermal emission outriggers when the deformation of the piston rod surface ablation， bad working condition， this paper adopts a metal spiral steel strip was carried out on the thermal protection of the piston rod， on the binding design， and carry out the reliability test and micrometeorology test， finaly launched by loading test， proves that spiral steel strip to the piston rod to realize comprehensive protection. It has certain value in the engineering application.

Key words: outrigger; spiral steel belt; reliability test; thermal protection

负载敏感系统旋挖钻机动力头补油优化设计

罗瑶，黎起富，湛良传，滕召金，宁焕

（恒天九五重工有限公司，湖南长沙410100）

摘要：分析了负载敏感系统旋挖钻机动力头回油补油的工作原理，测试了动力头正反转甩土工况的补油压力曲线。提出在动力头补油系统加装蓄能器以降低液压冲击及防止吸空，并论述了蓄能器的选型计算方法。该优化方向极大降低了动力头补油系统的冲击压力，有效防止吸空，提高了动力头补油系统的性能。

关键词：旋挖钻机；补油；负载敏感；蓄能器；液压冲击；吸空

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0064-04

Optimal Design of Power Head Oil Replenishing for Rotary

Drilling Rig with Load Sensing System

LUO Yao，LI Qi-fu，ZHAN Liang-chuan，TENG Zhao-jin，NING Huan

(CHTC JOVE Heavy Industry Co., Ltd., Changsha410100, China)

Abstract: This paper analyzes the operating principle of return-oil replenishing in power head of the load sensing system rotary drilling rig, and tests the oil replenishing pressure curve under the power head working condition of clockwise and counterclockwise rotation to throw soil. This paper puts forward to install accumulator in the power head oil replenishing system in order to reduce the hydraulic shock and protect from suction vacuum, and expound the calculation method of accumulator type selection. The optimization direction greatly reduces the hydraulic shock pressure of the power head oil replenishing system, effectively protect from suction vacuum, and improves the reliability of the power head oil replenishing system.

Key words: rotary drilling rig； oil replenishing； load sensing； accumulator； hydraulic shock； suction vacuum

偏导射流式伺服阀提升稳定性的研究

姜波，殷熙中，王利宁

（陕西秦峰液压有限责任公司，陕西汉中723000）

摘要：介绍了某型偏导射流式伺服阀的组成结构和工作原理，针对在生产过程中出现小电流信号下伺服阀输出流量波动较大现象，通过对故障伺服阀的检查分析，找到了流量波动产生的原因，从零件结构尺寸、零组件加工工艺、性能测试方法进行优化改进，通过优化改进提升了伺服阀稳定性。

关键词：偏导射流式伺服阀；流量波动；稳定性

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0067-04

Research on Improving Stability for Deflector Jet Servo-Valve

JIANG Bo, YIN Xi-zhong, WANG Li-ning

(Shaanxi Qinfeng Hydraulic Co., Ltd., Hanzhong723000, China)

Abstract: Structural compositions and working principle of the deflector jet servo-valve are briefly introduced. Through the inspection and analysis of the faulty parts, the reason for flowed fluctuation on small current signal is found. we optimize and improve the size, processing technology and detection method of the part, The problem has been solved, and stability of servo-valve has been improved.

Key words: deflector jet servo-valve; flowed fluctuation; stability

工程机械重负荷液力传动油湿式摩擦试验性能研究

张伟光，黄东升，姜禹，徐晶晶，赵治宇

（中国石油大连润滑油研究开发中心，辽宁大连116031）

摘要：近年来，国内工程机械开始走上技术升级之路。国内工程机械变速箱主要使用6号/8号液力传动油，目前国家标准，机械工业协会标准均没有摩擦试验方法，已不能满足OEM的需求。液力传动油摩擦特性反映着设备在换挡操作时产生的换挡冲击、换挡迟滞、摩擦耐久等方面性能，直接影响驾驶员乘坐舒适性及油品摩擦耐久性能。采用SAE NO.2摩擦试验机选取可以科学评价国内工程机械设备变速箱湿式摩擦系统的试验方法。

关键词：摩擦试验方法；SAE NO.2试验台；工程机械变速箱液力传动油

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0071-05

Study on Transmission Oil Friction Performance Test for Heavy Duty Construction Machinery

ZHANG Wei-guang， HUANG Dong-sheng， JIANG Yu， XU Jing-jing， ZHAO Zhi-yu

（PetroChina Dalian Lubricating Oil R&D lnstitute， Dalian116031， China）

Abstract: In recent years, domestic engineering machineryhas embarked on the road of technical upgrading. The domestic construction machinery transmission mainly uses No. 6/8 hydraulic transmission oil. At present, there is no friction test method for national standards and machinery industry association standards, which can not meet the needs of OEM. The friction characteristics of hydraulic transmission oil reflect the performance of gear shifting impact, shifting hysteresis, friction durability and so on, which directly affect driver ride comfort and oil friction durability. The SAE NO.2 friction tester was used to select the test method that can scientifically evaluate the gearbox wet friction system of domestic engineering machinery equipment.

Key words: friction test method; SAE NO. 2 test stand; engineering mechanical transmission hydraulic transmission oil

屋顶式高效水雾空气净化喷洒系统的设计与实践

杨茂芽¹，车胜创²，刘向红¹

（1.陕西国防工业职业技术学院，陕西西安710300；

2.长安大学，陕西西安710064）

摘要：为有效解决城市社区及城市道路两侧建筑空域等日益恶化的空气环境污染问题，助力区域环境空气净化，该文基于水雾除尘理论，以降低区域空气中固体颗粒物含量、增加空气湿度等为目标，针对屋顶式高效水雾空气净化喷洒系统的设计思路、总体结构及布局、管路系统工作原理、功能控制及现场实验等关键环节进行了研究。实验结果显示，该设计对于城市社区及城市道路两侧建筑空域的固体颗粒物治理和增加空气湿度等方面具有一定的成效，可为城市区域空气质量的提升提供重要参考。

关键词：城市高层建筑群；高效水雾；喷洒系统；空气净化；设计与实践

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0075-04

Design and Practice of Roof Type High Efficiency Water Mist

Air Purification Spraying System

YANG Mao-ya¹，CHE Sheng-chuang²，LIU Xiang-hong¹

（1. Shaanxi Institute of Technology, Xi'an710300, China；

2. Chang'an University, Xi'an710064, China）

Abstract: In order to effectively solve the worsening air pollution problems of urban communities and the building airspace on both sides of urban roads, and help the regional air purification. In this paper, based on the theory of water mist dust removal, aiming at reducing the content of solid particles in the air and increasing the air humidity, the design idea, overall structure and layout, working principle of pipeline system, function control and field experiment of roof type high-efficiency water mist air purification spraying system are studied. The experimental results show that the design has a certain effect on the treatment of solid particles and the increase of air humidity in the urban community and the building airspace on both sides of the urban road, which can provide an important reference for the improvement of the air quality in the urban area.

Key words: urban high rise buildings；high efficiency water mist；spraying system；air purification；design and practice

一种液压伺服机构动态特性滞后问题研究

陈飞，滕怀海，耿树鲲，田福良，康平

（北京精密机电控制设备研究所，北京100076）

摘要：该文讨论了一种运载火箭用液压伺服作动器频率特性在多次测试过程中，数据变化大的问题。通过对故障原因的分析，并开展了仿真分析和试验验证工作，最终得出了相频滞后主要由于传动环节的间隙因素引起的。针对故障原因制定了改进措施，经验证该措施彻底解决了产品随测试次数增加出现的相频特性发生滞后的问题。

关键词：液压伺服机构；动态特性；滞后；研究

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0079-06

Research on Dynamic Characteristic Lag of Hydraulic Servo Mechanism

CHEN Fei, TENG Huai-hai, GENG Shu-kun, TIAN Fu-liang, KANG Ping

(Beijing Precision Electromechanical Control Equipment Research Institute,

Beijing100076, China)

Abstract: This paper discusses the problem of large variation in the frequency characteristics of a hydraulic servo actuator for a launch vehicle during many tests. Through the analysis of fault causes, simulation analysis and experimental verification, it is concluded that the phase frequency lag is mainly caused by the gap factor of transmission link. The improvement measures are formulated according to the fault causes. It is verified that the measures completely solve the problem of lag of phase frequency characteristics with the increase of test times.

Key words: hydraulic servo mechanism; dynamic characteristic; lag; research

吸气式飞行器增压系统结构优化设计研究

杨延婷，姜金朋，刘洋，刘筑，李承恩，邵嘉健

（中国运载火箭技术研究院空间物理重点实验室，北京100076）

摘要：吸气动力式飞行器由于发动机进气道、燃烧室等结构贯穿大半飞行器，相比火箭等传统飞行器，装载其上的设备和系统面临更多结构限制，在系统结构优化设计过程中需要考虑和克服所有限制因素，达到工艺性好、占用空间少、安装简单的综合方案。该文针对增压系统提出了一种同时考虑系统级和元件级结构设计的优化设计方法。实例表明该方法为吸气式飞行器增压系统结构设计提供了1种有效的解决方案。

关键词：增压系统；结构优化设计；吸气动力式飞行器；研究

中图分类号：TH138文献标志码：A文章编号：1008-0813（2022）01-0084-06

Research on Structural Optimization Design of Pressurization System for Air-breathing Aircraft

YANG Yan-ting, JIANG Jin-peng, LIU Yang, LIU Zhu, LI Cheng-en, SHAO Jia-jian

（Science and Technology on Space Physics Laboratory, China Academy of Launch Vehicle Technology, Beijing100076, China）

Abstract: Air-breathing aircraft, due to the engine intake, combustion chamber and other structures those penetrate most space of the aircraft, compared to traditional aircraft such as rockets, face more structural restrictions in the process of mounting equipment and systems. All restrictions need to be considered and overcome in the structural optimization design process to achieve a comprehensive program with good manufacturability, less space, and simple installation. This article proposes an optimization design method that considers both the system-level and component-level structural design for the pressurization system. An example shows that the method provides an effective solution for the structural design of the air-breathing aircraft pressurization system.

Key words: pressurization system; structural optimization design; air-breathing aircraft; research

三辊卷板机电液无级调速系统

邹涛¹，朱军¹，张伦伟²，陈建平³，米智楠³

（1.南通泰胜蓝岛海洋工程有限公司，江苏南通226259；

2.同济大学航空航天与力学学院，上海200092；

3.同济大学机械与能源工程学院，上海200092）

摘要：传统卷板机工作辊转速不可调节，采用电液变频调速技术以实现上工作辊的无级调速，扩大了调速范围。在对泵控液压马达构成的电液无级调速系统进行静态特性、动态特性等理论分析的基础上，建立了调速系统的数学模型，为工作辊速度调节提供了理论依据，对卷板机方案设计和技术改造具有参考意义。

关键词：卷板机；数学模型；调速；液压

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0090-03

Electro-hydraulic Stepless-speed System of Three-roller Plate Bending Machine

ZOU Tao¹, ZHU Jun¹, ZHANG Lun-wei², CHEN Jian-ping³, MI Zhi-nan³

（1. NanTong TaiSheng Blue Island Offshore Co., Ltd., Nantong226259, China;

2. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai200092, China; 3. School of Mechanical Engineering, Tongji University, Shanghai200092, China）

Abstract: To solve the problem of non-speed adjusting for the three rollers of bending machine, a new electro-hydraulic stepless-speed system of pump-controlled motor is analyzed. On the base of analysis, a mathematical model is established and can be turned into theorical analysis basis.

Key words: bending machine；mathematical model；speed adjustment; hydraulic

飞机液压系统故障分析及改进措施

徐灵惺，李欣怡，杨莎

（中航西安飞机工业集团股份有限公司西飞设计院，陕西西安710089）

摘要：该文对飞机液压系统渗漏油原因进行分析，根据试验和分解措施得出渗漏油原因为该泵零流量状态下散热性能较差造成橡塑密封件失效导致结合面渗漏油。根据该故障原因对该泵零流量状态下散热性能进行优化，并利用AMESim仿真、地面台架试验、装机试飞试验的形式对效果进行验证，改进效果良好。

关键词：液压系统；柱塞泵；改进；漏油

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）01-0092-05

Analysis and Improvement Measures of Hydraulic System Oil Leakage

XU Ling-xing, LI Xin-yi, YANG Sha

（AVIC Xi'an Aircraft Industry（Groop）Company Ltd., Xac Design Center, Xi'an710089, China）

Abstract: This paper analyzes the cause of oil leakage at hydraulic system, and obtains oil leakage based on tests and decomposition measures. The reason is that the poor dispersion performance of the pump under the zero flow state causes the failure of the rubber and plastic seals, which leads to oil leakage on the joint surface. According to the fault reason we optimize the heat dissipation performance of the pump under the zero flow state and use AMESim simulation, ground bench inspection, and installation to test the form, and the improvement effect is good.

Key words: piston pumps; hydraulic system; improvement; oil leakage