煤矿机电设备故障及维修策略研究

煤矿机电设备作为煤矿生产的重要工具,其是否能够高标准安全运行直接决定了煤矿能源设备工作效率的高低。因此,作为煤矿企业技术管理工作的一部分,煤矿机电设备故障维修对于维护整个企业安全生产管理具有重要意义。本文主要探讨了煤矿机电设备常见故障,并提出了具体的维修策略,以期为煤矿机电设备维修提供参考。     

煤矿井下机电设备的维护与维修

基于煤矿井下机电设备运行安全与效率的重要性,从细节入手研究分析了目前我国煤矿井下机电设备维护与维修的重要意义及存在的问题,从而提出了加强煤矿井下机电设备维护与维修的有效措施。加强井下机电设备的维护与维修,不仅有利于提高煤矿井下机电设备运行的安全性与可靠性,而且可以保证煤矿企业安全高效的生产运行。     

煤矿机电设备故障诊断与维修探析

通过对煤矿机电设备的故障诊断以及维修技术进行分析,探讨了机电设备中诊断技术以及维修技术的具体应用情况,以确保煤矿机电设备的安全、可靠运行,促进煤矿生产效率的提升。     

煤矿机电设备检修模式分析

从机电维修技术和设备资源利用两方面介绍了煤矿机电设备维修工作的基本准则,并提出了一系列煤矿机电设备维修工作的优化措施。加强对采矿机电设备维修技术的应用,不仅能够确保煤矿设备安全运行,而且能够有效提高采煤工作效率。     

煤矿机电设备维修技术管理的现状与对策

针对煤矿机电设备维修管理工作的重要性,着重对机电设备维修技术管理的现状问题进行分析研究,进而对煤矿机电设备维修技术管理提出了合理化建议及相关对策,以此提高煤矿生产的产量,推动整个煤矿事业的良好发展。     

煤矿机电设备故障诊断与维修技术

通过对煤矿机电设备的故障诊断以及维修技术进行分析,探讨了机电设备中诊断技术以及维修技术在提升机和采煤机中的具体应用情况,希望可以更好地确保煤矿机电设备的安全、可靠运行,促进煤矿生产效率的提升。     

煤矿机电设备故障的诊断维修与预防

煤矿机电设备的安全稳定运行是保证煤矿生产工作正常进行的基础,同时在很大程度上影响着煤矿生产工作的效率和安全。为了能够保证煤矿企业的长期稳定发展,提高企业经济利益,必须加强对煤矿机电设备故障诊断和维修技术的研究力度,因此,对目前煤矿机电设备故障的诊断方法、常见的故障维修技术以及机电设备故障预防措施进行分析。     

煤矿机电设备安全管理及维护

煤矿机电设备的管理与维护是保证煤矿企业生产运行的关键,是煤矿企业里的重要的管理工作。论文对我国煤矿机电设备管理现状进行了分析,探讨了机电设备的安全管理和维护。     

矿山机电设备维护管理探讨

结合实例分析某煤矿机电设备状况。分析该煤矿机电设备故障的具体原因,对该煤矿机电设备维护管理方式进行评价,最后探讨该煤矿机电设备维护策略的选择。通过采用合理、适宜的维护管理方式,能够确保机电设备维护管理工作效率进一步提升,为机电设备安全、可靠运行提供保障。     

煤矿机电设备资料管理浅探

基于煤矿机电设备资料管理工作的繁琐性和复杂性,从资料移交、建档存放、借阅以及到期更换整理等四个方面对煤矿机电设备资料管理工作进行详细的说明和分析。保证资料的准确性与完整性,可为机电设备的安全稳定运行提供保障。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

Quantum Cooperative Robotics and Autonomy

The intersection of Quantum Technologies and Robotics Autonomy is explored in the present paper.The two areas are brought together in establishing an interdisci...     

On the Relation of Load to Average Gap in the Contact Between Surfaces with Longitudinal Roughness

A computer simulation model for the contact between longitudinally-oriented rough surfaces has been formulated. This model closely duplicates the actual surf ace contact deformation behavior by taking into account the elastic interactions between the asperities. There were no assumptions made about the shapes, or any deformation behavior of the asperities, except for their obeying the laws of elasticity. The plastic deformations on the high asperity peaks were taken into account by setting a ceiling on their contact pressures at the material hardness value. The simulations used real surface profiles which were digitized from unworn circumferentially ground steel surfaces. Each pair of these profiles was mathematically combined to form an equivalent rough profile pressing against an infinitely rigid flat and having the appropriately adjusted elastic modulus. A total of 28 different pairs of profiles were used in the simulations. Each contacting pair was subjected to 30 different load levels and the local contact pressures and deformations were calculated. The contact simulations yielded some important mathematical relationships between parameters, such as the real area of contact, average gap, and average asperity load through statistical curve fitting. Two analytical functions were generated to relate the average load to average gap and the real area of contact to load.     

三绕组变压器的双绕组等效建模及在Matpower中的应用

针对实际电网存在着大量的三绕组变压器,但国际上一些著名商业软件,如BPA仿真软件、Matpower这一权威潮流计算开源软件,均只提供双绕组变压器模型,限制了其在具有三绕组变压器的电力系统中的应用的问题,潮流计算是自主开发的电力系统各种应用软件的核心模块,因此依托国际权威开源程序进行二次开发,是一种较好的选择。对Matpower要求的数据格式进行了归纳,对变压器的一般的等值电路及带理想变压器的等值电路和带标幺值的等值电路进行了分析研究,提出了三绕组变压器转换为双绕组等效模型的建模方法,使得原先只适应双绕组变压器的潮流计算软件可以适用于三绕组变压器电网的潮流计算;最后以Matpower软件为例进行了案例计算,并用PSASP仿真软件进行对比验证。研究结果证明,所提出的建模方法是有效的。     

电站锅炉模糊风险评价方法研究与应用

针对电站锅炉风险等级评价问题,将模糊综合评价技术应用到电站锅炉风险等级评价中。开展了电站锅炉失效影响因素及模糊评价因素的重要程度分析,建立了一套科学合理适于在线评价的电站锅炉风险评价体系,提出了模糊综合评价技术与改进的模糊层次分析法相结合的模糊风险评价方法,利用改进的模糊层次分析法计算了指标体系中各层指标权重。对某一台电站锅炉的实际运行工况影响子因素进行了模糊风险评价,采用模糊合成算子进行模糊综合运算得到电了站锅炉运行工况影响子因素的评价向量。研究结果表明:电站锅炉的运行工况影响子因素的风险评价等级为第6级,失效可能性等级为小,该电站锅炉运行工况良好。     

考虑进油孔有限长滑动轴承油膜力的近似解析解

针对具有进油孔的有限长滑动轴承油膜力求解问题,采用变分原理和分离变量法,求得了有限长滑动轴承油膜压力分布的近似解析表达式。将油膜压力分布的近似解析表达式在油膜存在区域上进行积分,即得到了油膜力。将提出的计算有限长滑动轴承油膜力方法与无限长轴承模型、有限元方法的计算结果进行了比较,发现了提出的方法与有限元方法的计算结果很接近。最后,研究了进油孔位置和进油压力对油膜存在区域、油膜力等的影响,研究结果表明进油孔位置和进油压力对油膜存在区域和油膜力有较大的影响。     

INTEGRAL EQUATION METHOD＇S APPLICATION IN HOLE-EDGE STRESS OF COMPOSITE MATERIAL PLATE WITH DIFFERENT SHAPED HOLES

The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.     

交通荷载作用下桥梁结构参数识别方法

应用动力节点加载法,将作用在桥梁上的交通荷载转化为等效节点荷载,再用两步构造法识别结构物理参数.第1步,用Newmark-β方法变换结构运动方程,并用结构的加速度响应求得变换空间内的位移、速度和加速度响应;第2步,基于最小二乘原理,构造出变换空间内求解结构参数的递推式,进行结构物理参数识别.数值模拟结果表明,在交通荷载作用下,该方法能够快速、准确地进行桥梁结构参数识别.     

Short-Term Relay Quality Prediction Algorithm Based on Long and Short-Term Memory

The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...     

End-to-End Multiview Gesture Recognition for Autonomous Car Parking System

The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....