燃油泵调节器流量波动特性分析

郭力

（陕西国防工业职业技术学院，陕西西安710300）

摘要：在航空发动机控制过程中出现的燃油流量波动和压力摆动、导叶角度摆动等控制变量波动问题，往往涉及多个环节和学科，难以解决。对此提出了一种基于控制理论、数学建模、液压专业知识等多学科的分析与解决方法，涉及谐振频率提取、系统模型线性化、特征值分析、模态分析、改进措施与验证等环节。并以某型燃油泵调节器在小状态的流量波动问题的解决过程为例，展示了该方法在工程中尤其发动机燃油控制系统研制中的应用价值，为该类问题的解决提供了重要参考。

关键词： 流量波动；燃油泵调节器；数学建模；线性化；频率特性0

中图分类号：TH137；TH325文献标志码：A文章编号：1008-0813（2022）09-0001-05

Analysis of Flow Fluctuations Characteristics of Fuel Pump and Regulator

GUO Li

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

Abstract: In the process of aero engine control, fuel flow fluctuations and pressure swings, engine vane angle swings, etc., often involve multiple links and disciplines, difficult to solve. For this problem, a method is proposed, analyzing and solution based on multi-disciplines such as control theory, math modeling, hydraulic expertise, involving resonant frequency extraction, system model linearization, characteristic analysis, modal analysis, improvement measures and verification. And the solution process of the flow fluctuation problem of a certain fuel pump and regulator in small state is case. The application value of this method in the development of especially aero engine fuel control system is shown, providing an important reference for the solution to this problem.

Key words: flow fluctuation; fuel pump and regulator; math modeling; linearization; frequency characteristic

基于变转速控制的对旋轴流泵混输特性分析

韩伟，徐俊，史凤霞，黄心愿，李志雄，米建东

（兰州理工大学能源与动力工程学院，甘肃兰州730050）

摘要：由前置叶轮和后置叶轮反向旋转组成的对旋轴流泵有设计结构更紧凑、效率更高、性能更好的特点。由于气液混输泵是现代石油勘探及输送技术的一个重要研究方向，因此有必要研究对旋轴流泵的气液混输特性。应用计算流体力学的方法对不同工况下的对旋轴流泵进行数值模拟。分析对旋轴流泵的载荷分布以及变转速控制对其内部流动结构、气相分布的影响。计算结果表明：气相向轮毂侧移动，液相向轮缘侧流动，后置叶轮的气相聚集现象比前置叶轮更明显，气相聚集在逆压力梯度区域。分析了变转速控制法对混输泵性能的影响，两种变转速控制方法均能提高扬程和效率。在前置叶轮转速控制法(CFS)中湍动能变化曲线是单峰曲线；在后置叶轮转速控制法(CRS)中湍动能变化是双峰曲线。比较两种叶轮控制方法的湍流动能轴向分布曲线，发现前置叶轮控制方法的湍动能曲线均高于后叶轮控制方法的湍动能曲线，表明前置叶轮转速控制法湍流扩散程度更剧烈。

关键词：对旋轴流泵；混输特性；数值模拟；变转速控制；气相聚集

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0006-08

Analysis of Mixed Transportation Characteristics of Counter Rotating

Axial Flow Pump Based on Variable Speed Control

HAN Wei, XU Jun, SHI Feng-xia, HUANG Xin-yuan, LI Zhi-xiong, MI Jian-dong

(College of Energy and Power Engineering, Lanzhou University of Technology,

Lanzhou730050, China)

Abstract: The counter rotating axial flow pump composed of front impeller and rear impeller has the characteristics of more compact design structure, higher efficiency and better performance. As the oil-gas mixed transportation pump is an important research direction of modern oil production and transportation technology, it is necessary to study the gas-liquid mixed transportation characteristics of counter rotating axial flow pump. The numerical simulation of counter rotating axial flow pump under different working conditions is carried out by using the method of computational fluid dynamics. The load distribution of counter rotating axial flow pump and the influence of variable speed control on its internal flow structure and gas phase distribution are analyzed. The calculation results show that the gas phase moves to the hub side and the liquid phase flows to the rim side. The gas phase accumulation phenomenon of the rear impeller is more obvious than that of the front impeller, and the gas phase accumulates in the area of reverse pressure gradient. The influence of variable speed control method on the performance of mixed transport pump is analyzed. Both variable speed control methods can improve the head and efficiency. In the front impeller speed control method (CFS), the change curve of turbulent kinetic energy is a single peak curve; In the post impeller speed control method (CRS), the change of turbulent kinetic energy is a bimodal curve. Comparing the axial distribution curves of turbulent kinetic energy of the two impeller control methods, it is found that the turbulent kinetic energy curves of the front impeller control method are higher than those of the rear impeller control method, indicating that the turbulent diffusion degree of the front impeller speed control method is more intense.

Key words: counter rotating axial flow pump; mixed transport characteristics; numerical simulation; variable speed control; gas phase accumulation

基于BP-PID的双液压缸电液同步控制仿真研究

穆洪云，罗艳蕾，杜威，邓行

（贵州大学机械工程学院，贵州贵阳550025）

摘要：液压同步控制广泛应用于当今社会各行各业机械设备中，现代液压技术对液压系统的精确控制能力提出了更高的要求，要求双液压缸同步控制更加快速、准确、稳定。该文采用耦合控制和BP-PID控制的控制方法，首先建立双液压缸液压系统原理模型，其次根据该液压系统原理模型特点，在AMESim中建立对应的仿真模型，并在MATLAB/Simulink中建立耦合控制和BP-PID控制的仿真模型，最后进行联合仿真并与PID控制进行比较，分析双液压缸的同步性和鲁棒性。仿真结果显示：初始负载不同液压缸，采用BP-PID控制器相比与PID控制器，响应时间缩短了22.2%，稳定前最大的同步误差降低了50.4%，稳定后同步误差降低了25%；当负载突变时，采用BP-PID控制器相比于PID控制器，响应时间缩短了70%，稳定后同步误差降低了25%。故采用BP-PID相对于PID能够有效提高双液压缸同步性和鲁棒性，对于提高液压缸同步控制性能具有重要意义。

关键词：双液压缸；同步控制；BP-PID；联合仿真

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0014-06

Simulation Research on Synchronous Control of Double Hydraulic

Cylinder Based on BP-PID

MU Hong-yun, LUO Yan-lei, DU Wei, DENG Hang

(School of Mechanical Engineering, Guizhou University, Guiyang550025, China)

Abstract: Hydraulic synchronous control is widely used in today's society in all walks of life machinery and equipment, in order to adapt to the level of modern hydraulic technology, put forward higher requirements for the precise control ability of the hydraulic system, for the requirements of double hydraulic cylinder synchronous control, it has the characteristics of fast, accurate and stable. In this paper, the control method of coupling control and BP-PID control is adopted. Firstly, the principle model of double hydraulic cylinder hydraulic system is established. Secondly, according to the characteristics of the principle model of the hydraulic system, the corresponding simulation model is established in AMESim, and the simulation model of coupling control and BP-PID control is established in MATLAB/Simulink. Finally, the co-simulation is carried out and compared with PID control, the synchronization and robustness of the two hydraulic cylinders are analyzed. The simulation results show that the response time of BP-PID controller is reduced by 22.2%, the maximum synchronization error before stabilization is reduced by 50.4%, and the synchronization error after stabilization is reduced by 25%; when the load changes suddenly, the response time of BP-PID controller is reduced by 70% compared with PID controller, and the synchronization error is reduced by 25% after stabilization. Therefore, compared with PID, BP-PID can effectively improve the synchronization and robustness of double hydraulic cylinders, which is of great significance to improve the synchronization control performance of hydraulic cylinders.

Key words: double hydraulic cylinder； synchronization control； BP-PID； co-simulation

六自由度复杂并联机构电液驱动平台运动控制方法研究

李信言

（西安航空职业技术学院航空制造工程中心，陕西西安710089）

摘要：针对六自由度并联机构在带载运动过程中会导致电液驱动平台运动不稳定，运动精度下降的问题，提出一种基于多参数整定的滑模控制解耦运动控制策略，首先，在六自由度复杂并联机构电液驱动平台系统结构基础上，建立了其运动学数学模型；其次，设计了滑模控制策略来优化电液驱动力矩控制，提高运动的稳定性；最后，在MATLAB/Simulink建模平台构建了电液驱动平台控制算法模型，结合硬件在环试验环境对控制方法进行了试验验证，实验结果表明，该运动控制方法能够快速地提升平台的运动稳定性和精确度。

关键词：并联机构；电液驱动；滑模控制；力矩控制；硬件在环试验

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0019-04

Research on Motion Control Method of Electro-hydraulic Drive

Platform for 6-DOF Complex Parallel Mechanism

LI Xin-yan

(Xi'an Aeronautical Polytechnic Institute, Aviation Manufacturing Engineering Center, Xi'an710089, China)

Abstract: Aiming at the problem that 6-DOF parallel mechanism will cause the movement of electro-hydraulic drive platform to be unstable and the motion accuracy to be reduced during the process of loaded motion, a sliding mode control decoupling motion control strategy based on multi-parameter tuning is proposed. Firstly, based on the structure of electro-hydraulic drive platform system of the 6-DOF complex parallel mechanism, its kinematic mathematical model is established. Secondly, the sliding mode control strategy is designed to optimize the electro-hydraulic drive torque control. In order to improve the stability of motion, an electro-hydraulic drive platform control algorithm model is built on MATLAB/Simulink modeling platform, and the control method is tested and validated in the ring test environment by hardware. The experimental results show that the motion control method can rapidly improve the accuracy of the platform motion stability.

Key words: parallel mechanism; electro-hydraulic drive; sliding mode control; torque control; hardware in loop test

分流叶片偏置对螺旋离心式燃油泵性能影响

姚惠钟¹,韩伟^1,2,刘晓超¹,张腾¹,周畅¹

（1.兰州理工大学能源与动力工程学院，甘肃兰州730050；

2.甘肃省流体机械及系统重点实验室，甘肃兰州730050）

摘要：以某型号螺旋离心式燃油泵为研究对象，研究了分流叶片偏置对螺旋离心式燃油泵性能的影响规律。该文定义了分流叶片偏置度δ，相对空化余量NPSHψr以及相对效率η*，发现燃油泵效率与分流叶片偏置度近似呈现LogNormal函数变化趋势，燃油泵的相对临界空化系数与分流叶片偏置度近似呈现正弦函数变化趋势。研究发现，在设计流量下，分流叶片偏置度δ=0.33时，燃油泵的扬程和效率均达到最高值，其临界空化点在五种分流叶片偏置模型中处于最低值。

关键词： 螺旋离心式燃油泵；分流叶片偏置；相对空化余量；水力性能

中图分类号：TH137；TH311文献标志码：A文章编号：1008-0813（2022）09-0022-06

Influence of Splitter Blade Offset on Performance of Screw Centrifugal Fuel Pump

YAO Hui-zhong¹, HAN Wei^1,2, LIU Xiao-chao¹, ZHANG Teng¹, ZHOU Chang¹

(1. College of Energy and Power Engineering，Lanzhou Univ. of Tech.，Lanzhou730050, China；

2. Key Laboratory of Fluid Machinery and Systems, Gansu Province, Lanzhou730050, China)

Abstract: Taking a certain type of screw centrifugal fuel pump as the research object, the influence of splitter blade offset on the performance of screw centrifugal fuel pump is studied. This paper defines the splitter blade offset δ, relative cavitation margin NPSHψr and relative efficiency η*, it is found that the efficiency of the screw centrifugal fuel pump and the offset of the splitter blade approximately present the trend of lognormal function, and the relative critical cavitation coefficient of the screw centrifugal fuel pump and the offset of the splitter blade approximately present the trend of the sine function. It is found that under the design flow rate, the offset of the splitter blade decreases δ=0.33, the head and efficiency of the screw centrifugal fuel pump reach the highest value, and the critical cavitation point is the lowest among the five kinds of splitter blade offset models.

Key words: screw centrifugal fuel pump; splitter blade offset; relative cavitation margin; hydraulic performance

风力机叶片外形降噪多目标优化设计

杨从新¹，赵斌¹，丁佰岑²，曹宗彪²

（1.兰州理工大学能源与动力工程学院， 甘肃兰州730050；

2.兰州长信电力设备有限责任公司， 甘肃兰州730050）

摘要：针对风力机叶片的气动噪声问题，耦合风力机叶素动量理论与翼型气动噪声BPM模型，计算了某3MW风力机叶片的气动噪声；同时，采用NSGA-II算法，以叶片的弦长和扭角分布变化为优化变量，将风力机年发电量最大、叶片气动噪声声压级最小作为优化目标，对该风力机叶片进行了低噪声外形优化设计。结果显示：BPM模型计算结果与实验测量值吻合较好；风力机年发电量和叶片气动噪声两优化目标之间存在相互制约的关系，当风力机年发电量增大时，叶片的气动噪声也会随之上升；通过该次优化设计，得到了满足年发电量不下降的情况下气动噪声降低2.84dB（0.41dBA）的新叶片和气动噪声不上升且年发电量增加534.51MWh的新叶片。

关键词：风力机；气动噪声；BPM模型；多目标优化设计

中图分类号：TH138;TK83文献标志码：A文章编号：1008-0813（2022）09-0028-06

Multi-Objective Optimization Design of Wind Turbine Blade Shape for Noise Reduction

YANG Cong-xin¹，ZHAO Bin¹，DING Bai-cen²，CAO Zong-biao²

(1. The College of Energy and Power Engineering, Lanzhou Universit of Technology, Lanzhou730050,  China；

2. Lanzhou Changxin Power Equipment Co., Ltd., Lanzhou730050, China）

Abstract: Aiming at the aerodynamic noise problem of wind turbine blades, coupled with wind turbine blade element momentum theory and airfoil aerodynamic noise BPM model, the aerodynamic noise of a 3 MW wind turbine blade was calculated; at the same time, this paper adopted the NSGA-II algorithm, takes the chord length and twist angle distribution of the blades as the optimization variables, and takes the maximum annual power generation of the wind turbine and the minimum blade aerodynamic noise sound pressure level as the optimization objectives, low-noise aerodynamic shape optimization design of the 3 MW wind turbine blade was carried out. The results show that the results of the BPM model are in good agreement with the experimental measurements; the wind turbine annual power generation and blade aerodynamic noise optimization goals have a restrictive relationship, when the annual power generation of wind turbines increases, the aerodynamic noise of the blades will also increase; through this optimization design, a new blade with a 2.84dB (0.41dBA) reduction in aerodynamic noise is obtained without a decrease in annual power generation and a new blade that meet the requirement of no increase in aerodynamic noise and an increase in annual power generation of 534.51MWh.

Key words: wind turbine; aerodynamic noise; BPM model; multi-objective optimization design

海洋平台升降用多工况适应性液压系统设计与控制分析

万家平¹，杨旭²，吴东伟³，尚盈⁴，宋晓睿⁵，宋志国¹

（1.南通中远海运船务工程有限公司，江苏南通226006；

2.山东大学海洋研究院，山东青岛266237；

3.林德液压（中国）有限公司，山东潍坊261061；

4. 山东省科学院激光研究所，山东济南250104；

5.青岛城市学院，机电工程学院，山东青岛266106）

摘要：海洋平台升降系统在工作过程中面临复杂多变的工况以及严苛的海洋环境条件，其可靠的液压驱动系统是海洋平台安全作业的重要保障。该文在介绍海洋平台升降系统主要工作特性以及典型工况特点的基础上，分析桩腿轻载连续升降、桩腿重载间歇升降、故障应急间歇升降三种桩腿运动模式。进一步设计一套多工况适应性液压系统，具备独立位置控制、两组联合位置控制、三组联合位置控制、四组联合位置控制四种控制模式，通过四种控制方式的组合应用，满足三种桩腿运动模式在不同阶段的驱动控制需求。进一步建立单桩腿液压系统的仿真分析模型，研究桩腿升降液压系统的独立位置控制与联合位置控制性能。两种控制方式的仿真结果表明，设计升降液压系统在独立位置控制与四组联合位置控制下均可实现±1 mm的定位精度。此外，设计系统在独立位置控制模式下可实现快速定位，在四组联合位置控制模式下可实现多组升降装置间的均匀承载。

关键词： 海洋平台；升降系统；多工况适应；液压系统

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0034-08

Design and Control Analysis of a Multi-condition Adaptive Lifting

Hydraulic System of Offshore Platform

WAN Jia-ping¹, YANG Xu², WU Dong-wei³, SHANG Ying⁴, SONG Xiao-rui⁵, SONG Zhi-guo¹

（1. COSCO Shipping Shipyard (Nantong) Co., Ltd., Nantong226006, China;

2. Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China;

3. Linde Hydraulics (China) Co., Ltd., Weifang261061, China;

4. Laser Institute, Shandong Academy of Sciences, Jinan250104, China;

5. College of Electromechanical Engineering, Qingdao City University, Qingdao266106, China）

Abstract: The lifting system of offshore platform is faced with complex and changeable working conditions and harsh marine environment conditions in the working process, and its reliable hydraulic drive system is an important guarantee for safe operation at sea. Based on introducing the working characteristics and typical working conditions of the offshore platform lifting system, this paper analyzes three movement modes of the spud leg under different working conditions: continuous lifting under light load, intermittent lifting under heavy load and intermittent lifting under emergency failure. Furthermore, a hydraulic system is designed to satisfy a variety of working conditions, which has four control modes: independent position control, two-groups joint position control, three-groups joint position control and four-groups joint position control. Through the combined application of four control modes, the driving control requirements of three spud leg movement modes can be met. The simulation model of single spud leg hydraulic system is established to study the performance of independent position control and four-groups joint position control. The simulation results show that the positioning accuracy of the lifting hydraulic system is within ±1 mm. In addition, the lifting system can realize a rapid positioning in the independent position control mode and an uniform bearing in the four-groups joint position control mode.

Key words: offshore platform; lifting system; multiple condition adaptation; hydraulic system

伺服电机响应速度对EHA位置控制性能影响的研究

刘增光^1，2，雷向雳¹，李林飞¹，刘超¹，任禄¹

（1.兰州理工大学能源与动力工程学院，甘肃兰州730050；

2.甘肃省流体机械及系统重点实验室，甘肃兰州730050）

摘要：伺服电机是电静液作动器（EHA）的关键核心元件，其响应速度对EHA动态特性和控制性能有重要的影响。该文以实验室现有的EHA性能实验平台为研究对象，依据其工作原理和参数利用AMESim软件搭建了对应的仿真模型，进行了伺服电机响应速度对EHA位置控制性能影响规律的仿真和实验研究，得到了不同伺服电机响应速度条件下EHA的位移、速度和压力等的阶跃响应曲线，为EHA的性能提升和优化设计提供理论依据和技术支撑。

关键词：电静液作动器；伺服电机；响应速度；AEMSim

中图分类号：TH137  文献标志码：A文章编号：1008-0813（2022）09-0041-06

Influence of Servo Motor Response Speed on EHA Position Control

LIU Zeng-guang^1,2, LEI Xiang-li¹, LI Lin-fei¹, LIU Chao¹, REN Lu¹

(1. College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou730050, China;

2. Key Laboratory of Fluid Machinery and Systems, Lanzhou University of Technology, Lanzhou730050, China)

Abstract: Servo motor is the key component of electrohydrostatic actuator (EHA). Its response speed has an important influence on EHA dynamic characteristics and control performance. In this paper, the EHA performance experimental platform owned by the laboratory is taken as the research object. According to its working principle and parameters, the corresponding simulation model is built by AMESim software, and the simulation and experimental study on the influence law of servo motor response speed on EHA position control performance are carried out. The step response curves of displacement, velocity and pressure of EHA under different servo motor response speeds are obtained, which provides theoretical basis and technical support for EHA performance improvement and optimization design.

Key words: EHA; servo motor; response speed; AMESim

高压空气组合换向阀的密封与泄漏技术研究

李小仨，姜慧君，李金禄，耿茂飞，盛军

（合肥通用机械研究院有限公司压缩机技术国家重点实验室，安徽合肥230031）

摘要：干燥机作为压缩空气后处理设备，起着除油、除水、除粉尘颗粒的作用（固体粒子≤1μm；含油量≤0.01 mg/m³；常压露点≤-55℃）。但干燥、均压、泄放过程中，有漏气的现象，均压阀的密封垫不具有可逆性。该文进行细致地研究，从流体的角度分析了密封间隙的泄漏规律和密封圈的损坏问题，为同类设备密封设计起到参考作用。

关键词：组合换向阀；湍流；泄漏；尼龙；橡胶密封圈

中图分类号：TB42文献标志码：A文章编号：1008-0813（2022）09-0047-06

Research on Sealing and Leakage Technology of High Pressure Air Combined Changing Valve

LI Xiao-sa, JIANG Hui-jun, LI Jin-lu, GENG Mao-fei, SHENG Jun

(State Key Laboratory of Compressor, Hefei General Machinery Research Institute Co., Ltd., Hefei230031, China)

Abstract: As a post-treatment equipment for compressed air, the dryer can remove oil, water and dust particles (solid particles ≤1 μm; oil content≤0.01 mg/m³; dew point at normal pressure≤-55℃) . But there is air leakage in the process of drying, equalizing pressure and discharging. The sealing gasket of equalizing pressure valve is not reversible. In this paper, the leakage law of seal clearance and the damage of seal ring are analyzed from the view of fluid, which can be used as a reference for seal design of similar equipment.

Key words: combined changing valve; turbulent flow; leakage; nylon; rubber sealing ring

ESC液压控制单元测试系统的设计与应用

曾繁卓¹,王应国¹,杨利洁²,李宗玉¹

(1.中国汽车工程研究院股份有限公司，重庆401122；

2.重庆长安汽车股份有限公司，重庆400023)

摘要：介绍了基于飞思卡尔MC9S12XS128MAL单片机的ESC液压控制单元测试系统，具体阐述了ESC液压控制单元常规制动性能、ABS制动性能、主动制动性能、ABS制动耐久性及主动制动耐久性测试的实现方法。该测试系统不依赖于通讯协议，完全不同于汽车行业现有规定的试验方法，以更加直观的方式测试，测试方法和测试系统具有一定的创新性，实践结果表明该系统运行稳定，电磁阀脉冲电压控制精准，输入液压、输出液压、脉冲电压数据采集实时；试验测得的输出液压、脉冲电压与时间的历程关系曲线稳定可靠，可以满足各主机厂及零部件厂商对ESC液压控制单元试验的要求。

关键词： ESC液压控制单元；ABS制动；主动制动；飞思卡尔单片机

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0053-07

Design and Application of ESC Hydraulic Control Unit Test System

ZENG Fan-zhuo¹, WANG Ying-guo¹, YANG Li-jie², LI Zong-yu¹

(1. China Automotive Engineering Research Institute Co., Ltd., Chongqing401122, China;

2. Chongqing Chang'an Automobile Co., Ltd., Chongqing400023, China)

Abstract: This paper introduces the test system of ESC hydraulic control unit based on Freescale mc9s12xs128mal, The test methods of conventional braking performance, ABS braking performance, active braking performance, ABS braking durability and active braking durability of ESC hydraulic control unit are described in detail. The test system does not rely on communication protocol, which is completely different from the existing test methods in the automotive industry. It tests in a more intuitive way, and the test method and test system are innovative. The practical results show that the system runs stably, the pulse voltage control of solenoid valve is accurate, and the data acquisition of input hydraulic pressure, output hydraulic pressure and pulse voltage is real-time. The curves of output hydraulic pressure, pulse voltage and time history measured in the test are stable and reliable, which can meet the requirements of ESC hydraulic control unit test of main engine manufacturers and parts manufacturers.

Key words: ESC hydraulic control unit; ABS brake; active brake; freescale MCU

PTA装置薄膜蒸发器径向双端面机械密封研究

蒋维宏¹，何治²

（1.中国石化仪征化纤有限责任公司，江苏仪征211900;

2.中密控股股份有限公司，四川成都610045）

摘要： 某公司精对苯二甲酸（PTA）装置采用进口专利技术，薄膜蒸发器是PTA装置溶剂回收系统中的重要设备，其作用是从对苯二甲酸（TA）的残渣中分离出醋酸和水。该设备由日本日立公司制造，型号为MMC-6055，该薄膜蒸发器用机械密封的特点是：介质腐蚀性强，密封腔的轴向尺寸短，转子径向摆动大。针对以上难点，通过对密封摩擦副材质升级、参数调整，有效提高了机械密封的使用寿命。

关键词：薄膜蒸发器；机械密封；摩擦副；参数

中图分类号：TB42文献标志码：A文章编号：1008-0813（2022）09-0059-04

Research of Radial Double Mechanical Seal for Thin-film Distillers in PTA Plant

JIANG Wei-hong¹，HE Zhi²

（1. Sinopec Yizheng Chemical Fiber Co., Ltd., Yizheng211900, China；

2. Sinoseal Holding Co., Ltd., Chengdu610045, China ）

Abstract: In one PTA plant, which adopts imported patented technology, the thin-film distillers produced by HITACHI with model MMC-6055 are used as critical equipment for solvent recovery system. The function is to separate acetic acid and water from the residue of terephthalic acid (TA). The mechanical seal used for thin-film distillers have characteristics of high corrosive medium, short axial dimension in seal chamber and large radial movement on rotor. Considering these factors mentioned above, the service life of mechanical seal can be greatly improved by upgrading the material of friction faces and optimizing the parameters.

Key words: thin-film distillers; mechanical seal; friction faces; parameter

基于AMESim的抗流量饱和多路阀设计及仿真分析

汤波，方敏，张森，朱江森，叶建

（武汉船用机械有限责任公司研发设计中心，湖北武汉430084）

摘要：为实现多执行元件联动时负载独立流量分配，设计了一种抗流量饱和多路阀，主要包括多路阀结构、控制联阀体、主阀芯液控比例、负载压力补偿设计。应用AMESim仿真分析平台，建立了多路阀的仿真模型，以理论计算为基础，根据海工起重机主起升、变幅控制联同时动作典型工况，对变幅控制联负载压力按恒定或正弦曲线变化进行了仿真计算，得到了流量自动分配结果，且补偿精度优于90%，并经过试验验证，满足设计要求。

关键词： 抗流量饱和；无级调速；压差补偿；设计

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0063-06

Design and Simulation Analysis of Flow-saturated Resistant Multiple

Directional Valve with AMESim Software

TANG Bo，FANG Min，ZHANG Sen，ZHU Jiang-sen，YE Jian

（Wuhan Marine Machinery Plant Co., Ltd., Research and Development Center, Wuhan430084, China）

Abstract: In order to achieve independent flow distribution of load when multiple action elements work, a flow-saturated resistant multiple direction valve is designed, which mainly consists of structure, sandwich plate, main spool proportional hydraulic control, and load pressure compensation design. Based on AMESim software, the multiple direction valve simulation model is built. On the basis of theoretical calculation, and according to main hoisting and luffing sandwich plate work simultaneously, simulation calculation of luffing sandwich load pressure(remain unchanged or changes in sinusoidal waveform) is done. Finally, automatic flow distribution results are achieved, and compensation accuracy is better than 90%, which is validated by tests and meet the design goal.

Key words: flow-saturated resistant; stepless speed regulation; pressure compensation; design

液压挖掘机总功率控制轴向柱塞泵动态特性分析

石金艳¹，张克昌¹，史时喜²，李辉³

（1.湖南铁道职业技术学院，湖南株洲412001；

2.中铁第一勘察设计院集团有限公司，陕西西安710043；

3.四川川润股份有限公司，四川成都610031）

摘要：该文对液压挖掘机总功率控制轴向柱塞泵变量控制机构的工作原理进行了分析，同时建立了变量泵总功率控制的动态数学模型，并运用Matlab软件开展仿真分析，为总功率控制轴向柱塞泵的变量控制机构设计提供了一定的参考。

关键词：液压挖掘机；总功率控制；轴向柱塞泵；变量控制机构

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0068-04

Dynamic Characteristic Analysis of Axial Piston Pump Controlled by

Total Power of Hydraulic Excavator

SHI Jin-yan¹, ZHANG Ke-chang¹, SHI Shi-xi², LI Hui³

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

2. China Railway First Survey and Design Institute Group Co., Ltd., Xi'an710043, China;

3. SiChuan ChuanRun Ltd., Chengdu610031, China）

Abstract: In this paper, the working principle of variable control mechanism of axial piston pump of hydraulic excavator total power control is analyzed, and the dynamic mathematical model of variable pump total power control is established, it provides a certain reference for the design of variable control mechanism of total power control axial piston pump.

Key words: hydraulic excavator; total power control; axial piston pump; variable control mechanism

基于OPC技术的液气压虚拟仿真平台

靳雷

（河南质量工程职业学院，河南平顶山467001)

摘要：为解决液气压PLC控制系统仿真调试以及实验教学的需要，提出了一种虚拟仿真平台。该平台利用Fluidsim和三菱编程软件GX Developer为载体，通过三菱OPC服务软件 MX OPC Server实现两者的通信，实现液气压PLC控制系统在线仿真，并通过一个实例验证这个方案的可行性，为工程调试人员以及高校实验教学提供一种新的方法和手段。

关键词：OPC技术；Fluidsim；PLC；虚拟仿真

中图分类号：TH137;TP273文献标志码：A文章编号：1008-0813（2022）09-0072-04

Hydraulic and Pneumatic Virtual Simulation Platform Based on OPC Technology

JIN Lei

（Henan Quality Polytechnic，Pingdingshan467001, China)

Abstract: In order to solve the hydraulic-pneumatic PLC control system simulation debugging as well as the experimental teaching need, a virtual simulation platform is proposed. Using Fluidsim and Mitsubishi programming software GX Developer as the carrier, the communication between them is realized by Mitsubishi OPC service software MX OPC Server, the online simulation of hydraulic-pneumatic PLC control system is realized, and the feasibility of this scheme is verified by an example. A new approach and tool is provided to the project commissioning and the university experimental teaching.

Key words: OPC technology; Fluidsim; PLC; virtual simulation

叶片包角对螺旋离心式燃油泵空化性能影响

刘晓超¹，韩伟^1,2，李仁年¹，邱伊宁¹，周畅¹

（1.兰州理工大学能源与动力工程学院，甘肃兰州730050；

2.甘肃省流体机械及系统重点实验室，甘肃兰州730050）

摘要：为探究叶片包角对螺旋离心式燃油泵空化性能的影响，以某型号航空燃油泵作为研究对象，自主设计了190°、220°、250°、280°、310°、340°、370°、400°叶片包角燃油泵，采用数值模拟以及试验的方法得到燃油泵的空化性能。结果表明：燃油泵的效率与叶片包角呈二次函数关系，叶片包角为370°时燃油泵效率最高；燃油泵的泵空化余量与叶片包角呈三次函数关系，叶轮包角为400°时燃油泵的泵空化余量最小；以叶片进口边向叶轮进口延伸的方式来增加长叶片包角，可增加叶轮内相同位置的压力，抑制空化的发展阶段，提高燃油泵的空化性能；大包角燃油泵内发生空化的面积小，气泡聚集程度低，对燃油泵外特性影响低，空化性能高。

关键词：螺旋离心式燃油泵；包角；空化性能；数值模拟

中图分类号：TH137；TH311文献标志码：A文章编号：1008-0813（2022）09-0075-07

Influence of Blade Wrap Angle on Cavitation Performance of Spiral Centrifugal Fuel Pump

LIU Xiao-chao¹, HAN Wei^1,2, LI Ren-nian¹, QIU Yi-ning¹, ZHOU Chang¹

(1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou730050，China；

2. Key Laboratory of Fluid Machinery and Systems, Gansu Province, Lanzhou730050, China)

Abstract: In order to explore the influence of the blade wrap angle on the cavitation performance of the spiral centrifugal fuel pump, a certain type of aviation fuel pump was used as the research object, and the 190°, 220°, 250°, 280°, 310°, 340°, 370°, 400° blade wrap angle fuel pump was independently designed, and numerical simulation and test methods were adopted. Obtain the cavitation performance of the fuel pump. The results show that the efficiency of the fuel pump has a quadratic function relationship with the blade wrap angle, and the fuel pump has the highest efficiency when the blade wrap angle is 370°; the pump cavitation margin of the fuel pump has a cubic function relationship with the blade wrap angle, and the impeller wrap angle is the cavitation margin of the fuel pump is the smallest at 400°; increasing the wrap angle of the long blades by extending the blade inlet to the impeller inlet can increase the pressure at the same position in the impeller, inhibit the development stage of cavitation, and improve the fuel pump's performance cavitation performance; The area where cavitation occurs in the large wrap angle fuel pump is small, the degree of bubble accumulation is low, the effect on the external characteristics of the fuel pump is low, and the cavitation performance is high.

Key words: screw centrifugal fuel pump; wrap angle; cavitation performance; numerical simulation

飞机千斤顶同步液压系统设计

柳艳琴，李霞，王聪，蒋龙

（中航西安飞机工业集团股份有限公司，陕西西安710089）

摘要：针对目前大型飞机千斤顶使用中存在效率低、单独升降、运输体积大等问题，通过研究千斤顶结构及单独控制的手动、电动及手动和电动双动力源液压系统现状，提出液压系统与千斤顶结构分离的同步控制液压系统方案，该系统通过设计集中控制液压操纵箱、多路控制阀和同步器实现了既可同步也可独立控制多台千斤顶升降。给出了该液压系统动力源和控制阀设计选型依据，并在某飞机上验证了同步液压系统使用效果。

关键词： 千斤顶；作动筒；液压系统；多路阀；同步器

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0082-04

Synchronous Hydraulic System Design of Aircraft Jack

LIU Yan-qin，LI Xia，WANG Cong，JIANG Long

(AVIC Xi'an Aircraft Industry Group Co., Ltd., Xi'an710089, China)

Abstract: Aiming at the problems of low efficiency, single lifting and large transportation volume in the use of large aircraft jacks, the synchronous control hydraulic system scheme of hydraulic system separated from the jack structure is proposed by studying status of jack structure and the hydraulic system manual, electric, manual and electric dual power sources under separate control. The system can synchronously and independently control the lifting of several jacks by designing centralized control hydraulic control box, multi-way control valve and synchronizer. The basis for the design and selection of the power source and control valve of the hydraulic system is given. The application effects of the synchronous hydraulic system is verified in an aircraft.

Key words: jack; cylinder; hydraulic system; multiple unit valve; synchronizer

电液比例动力站实验教学系统设计

张日红¹，任雷²，李小敏¹，王振豪¹

（1.仲恺农业工程学院机电工程学院，广东广州510225；

2.宝佳那智（青岛）机器人应用有限公司，山东青岛266100）

摘要：机电液控制技术对于培养学生机械结构设计、电气电路设计和机电系统控制与调试等方面具备很强的综合性，而电液比例液压站是其中的典型代表之一。该文设计了一套教学型电液比例动力站，主要由油箱、泵单元、集成阀组和触控型电控柜组成，可以培养学生液压站结构设计与建模，变频器、比例换向阀、比例溢流阀、流量变送器和压力变送器等硬件的接线和信号调试，HMI人机界面设计，以及运用MODBUS_RTU串口通信协议实现PLC的系统整合和集中控制等工程化应用能力。

关键词： 电液比例；液压站；实验装置；教学平台；综合实践

中图分类号：TH137.9文献标志码：A文章编号：1008-0813（2022）09-0086-06

Design of Experimental Teaching System for Electro-hydraulic Proportional Power Station

ZHANG Ri-hong¹, REN Lei², LI Xiao-min¹, WANG Zhen-hao¹

(1. College of Mechanical and Electrical Engineering, Zhongkai University of Agriculture and Engineering,

Guangzhou510225, China;

2. Baojia Nachi (Qingdao) Robot Application Co., Ltd., Qingdao266100, China)

Abstract: Electro-hydraulic control technology has a strong comprehensiveness for training students in mechanical structure design, electrical circuit design, electromechanical system control and debugging, and electro-hydraulic proportional hydraulic station is one of the typical representatives. This paper designs a set of teaching electro-hydraulic proportional power station, which is mainly composed of oil tank, pump unit, manifold valve group and touch electric control cabinet. It can train students in the structural design and modeling of hydraulic station, the wiring and signal debugging of hardware such as frequency converter, proportional directional valve, proportional overflow valve, flow transmitter and pressure transmitter, the design of HMI man-machine interface and the use of Modbus_RTU serial communication protocol realizes the engineering application ability of PLC system integration and centralized control.

Key words: electro-hydraulic proportional; hydraulic station; experimental device; teaching platform; comprehensive practice

车载石油修井机气控系统设计

母小平¹，唐梦佳¹ ，田恒²，陈楠³

(1.中国石油集团渤海石油装备中成装备制造公司，天津300280；

2.天津渤海杰瑞石油装备有限公司，天津300280；

3.渤海石油装备石油专用管公司，天津300280）

摘要：以XJ900单滚筒带刹修井机为例，介绍了修井机底盘气控系统、修井作业气控系统的设计。根据修井机整机布局，对各部分气控系统进行集成化、模块化设计。通过对推盘离合器、空压机、储气筒等关键元件等进行计算，优化气控系统设计、系统配置及元器件选型。

关键词： 气控系统；集成化；模块化；设计

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0092-05

Designof Pneumatic Control System for Vehicle Mounted Oil Workover Rig

MU Xiao-ping¹，TANG Meng-jia¹，TIAN Heng²，CHEN Nan³

（1. Zhongcheng Equipment Manufacturing Company，CNPC Bohai Equipment Manufacturing Co.，Ltd.，Tianjin300280，China；

2. Tianjin Bohai Jereh Oilfield Equipment Co., Ltd., Tianjin300280， China；

3. Bohai Equipment Petroleum Special Pipe Co., Tianjin300280， China）

Abstract: Taking XJ900 single drum workover rig with brake as an example, this paper introduces the design of workover rig chassis pneumatic control system and workover operation pneumatic control system. According to the layout of the workover rig, the air control system of each part is designed in an integrated and modular way. Through the calculation of the key components of the push plate clutch, air compressor and air reservoir, the design, system configuration and component selection of the pneumatic control system are optimized.

Key words: pneumatic control system; integration; modularization; design

干气密封失效原因分析及在线监测系统实践

陈虹，张尔卿，张车宁

（中密控股股份有限公司，四川成都610045）

摘要：该文从干气密封的气源问题、操作方面、机组/工艺参数、设计方面、辅助系统、摩擦磨损、辅助密封圈等多个方面统计分析了干气密封失效的主要原因，并给出了针对性的预防措施和维护建议。基于统计知识搭建了多智能体干气密封监测系统，该系统已应用于**石化芳烃部3#重整装置K3201、K3202-1、K3202-2、K3202-3共4台压缩机干气密封。通过实时监测数据、历史数据、特征图谱分析，利用密封失效数据库和专家知识，开发的干气密封运行状态监测系统，为机组稳定运行及日常运维提供了数据支撑，对机组稳定运行具有保障作用。

关键词： 干气密封；状态监测；失效分析；状态评估

中图分类号：TB42文献标志码：A文章编号：1008-0813（2022）09-0097-09

On-line Monitoring System of Dry Gas Seal Based on Failure Statistical Analysis

CHEN Hong, ZHANG Er-qing, ZHANG Che-ning

(Sinoseal Holding Co., Ltd., Chengdu610045, China)

Abstract: The main causes of dry gas seal failure are analyzed statistically from the aspects of air source problem, operation, unit/process parameters, design, auxiliary system, friction and wear, auxiliary seal ring, etc., and specific preventive measures and maintenance suggestions are given. Based on the dry gas seals of 4 compressors in the No.3 reforming unit K3201, k3202-1, k3202-2 and k3202-3 of the aromatics department of ** petrochemical company, a seal monitoring system was built and a remote monitoring platform for the dry gas seal operation data was established. By collecting real-time monitoring data curve, historical data, characteristic graph analysis, fault warning signal, analysis report, expert knowledge, etc., and using seal failure database and expert diagnosis system, the operation status evaluation of dry gas seal is carried out, which provides technical basis for stable operation of the unit. The on-line monitoring system of dry gas seal status is innovative and industry-leading, which can guarantee the stable operation of the unit.

Key words: dry gas seal; condition monitoring; failure analysis; condition evaluation

某液压起竖机构振动问题分析与改进

李一¹，齐昊桢²，付曙光¹，张圣卓¹

（1.北京航天发射技术研究所，北京100076；

2.火箭军装备部驻北京地区第一军事代表室，北京100076）

摘要：针对某起竖机构在负向负载阶段出现的振动问题进行了原因分析，定位于负载变化后平衡阀阀芯开口大小与负载不适应。针对这一问题，对平衡阀工作机理进行分析，提出了更换平衡阀控制油桥路阻尼螺钉的改进措施，并采用AMESim软件进行了仿真分析，通过产品试验进行实物验证，结果表明改进措施效果良好，可为类似课题的研究提供借鉴作用。

关键词： 起竖机构；平衡阀；振动；改进

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0105-04

Analysis and Improvement of Vibration Problem for a Hydraulic Erection Mechanism

LI Yi¹, QI Hao-zhen², FU Shu-guang¹，ZHANG Sheng-zhuo¹

(1. Beijing Institute of Space Launch Technology, Beijing100076, China;

2. No.1 Military Representative Office of the PLA Armament Department, Beijing100076, China)

Abstract: Aimed at the problem of the erection mechanism vibration in the procedure of negative load, the causes are analyzed. It was due to the mismatch between the balance valve opening rate and the load after the load changed. In order to solve this problem, the working mechanism of balance valve was analyzed, an improvement measure of changing the damping screw of balance valve oil-control circuit was proposed, simulation verification was carried out using AMESim and physical verification was carried out through product tests. The results shows that the improvement measure is effective. The method used in this paper can provide reference for similar researches.

Key words: erection mechanism; balance valve; vibration; improvement

某型变量泵压力脉动异常分析与改进

吴绍香，刘雨，冯德刚，张进

（中航力源液压股份有限公司，贵州贵阳550018）

摘要：针对某型恒压式变量柱塞泵零流量状态压力脉动异常问题，运用FFT分析方法对压力脉动试验数据进行分析，得出了恒压控制系统不稳定是导致变量柱塞泵零流量压力脉动异常的主要原因，并据此提出相关改进措施，最后，通过试验验证了相关改进措施的有效性。

关键词：恒压式变量柱塞泵；压力脉动；FFT；改进

中图分类号：TH137文献标志码：A文章编号：1008-0813（2022）09-0109-04

Analysis and Improvement for Pressure Pulsation Abnormality of Variable Pump

WU Shao-xiang， LIU Yu， FENG De-gang， ZHANG Jin

(AVIC Liyuan Hydraulic Inc., Guiyang550018, China)

Abstract: Focus on the problem of abnormal pressure pulsation faults for variable piston pump of constant pressure control in zero flow state, Analysis the pressure pulsation data based on FFT analysis method, it is concluded that instability of pressure control system is the main reason for abnormal pressure pulsation, and put forward the corresponding improvement measures. Finally, through the experiment verify the correctness of the relevant improvement measures.

Key words: variable piston pump of constant pressure control; pressure pulsation; FFT; improvement