共查询到19条相似文献,搜索用时 520 毫秒
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基于PLC空压机组节能恒压供气控制系统的设计 总被引:1,自引:0,他引:1
针对徐矿集团义安煤矿空压机组控制系统存在的弊端,提出了基于PLC空压机组节能恒压供气控制系统的技术改造方案设计,介绍了该系统的组成、工作原理和功能。 相似文献
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空压机组故障的检测与控制 总被引:2,自引:0,他引:2
针对目前矿山空压机组检测与控制存在的缺陷,介绍一种新的检测与控制系统。该系统通过软件实现对空压机组进行检测、诊断和控制,克服了空压机组频发故障对生产过程的影响,具有一定的推广价值。 相似文献
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根据我国绝大多数煤矿的空压机工作现状,论述了空压机变频调速节能的原理,并介绍了空压机组节能恒压供气控制系统组成、工作原理和功能。 相似文献
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针对煤矿空压机组运行存在耗电量大、运行效率与可靠性低、机电设备维护和管理难度大等问题,利用S7系列PLC设计空压机变频调速控制系统。系统采用上、下位机监控框架,分别开发支持空压机组优化的软、硬件系统。以风包压力为实际控制对象,上位机S7-300利用模糊算法确认各空压机组的功率输出,在线整定PID参数,下位机S7-200对空压机组进行变频调速,适应井下风动负荷的动态变化。该系统实现了对空压机组运行状态的在线监控,系统运行平稳可靠,提高了空压机组的自动化控制水平。 相似文献
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针对山东某矿空压机站的5台空压机控制系统存在的不足,研制了以西门子PLC为核心的空压机站智能控制系统,实现了空压机及其冷却水系统的就地、远程和网络监控,达到了按需供风的目标。着重介绍了西门子PLC控制系统的硬件配置和软件设计。 相似文献
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通过对矿进独立反风时的风量验算,检测了通风机的性能,提高了采区有效风量的使用率,为今后通风机的使用和管理提高了科学的依据。同时对预防火灾事故,防止灾害事故的扩大,风量满足要求,提供了理论依据。 相似文献
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1 IntroductionMetal hydrides can be used as the working materials in the field of energy technology and show very Fig .1 The working principle of a single-stage heatpumppromising potentials to contribute tothe rational use of en-ergy . One i mportant application of hydrogen energy is themetal hydride heat pump[1 -6], which uses the hydrogen re-action enthalpy to generate useful cold or heat , and themetal hydride air conditioner is one i mportant form of it .The correlative reaction processes… 相似文献
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YANG Ke DU Ping LU Man-qi 《材料研究与应用》2005,(3):68-73
The relationship among the hydrogen storage properties, cycling characteristics and thermal parameters of the metal hydride air conditioning systems was investigated. Based on a new alloy selection model, three pairs of hydrogen storage alloys, LaNi4.4 Mn0.26 Al0.34 / La0.6 Nd0.4 Ni4.8 Mn0.2 Cu0. 1, LaNi4.61Mn0. 26 Al0.13/La0.6 Nd0.4 Ni4.8 Mn0.2 Cu0. 1 and LaNi4.61 Mn0.26 Al0.13/La0.6 Y0.4 Ni4.8 Mn0. 2, were selected as the working materials for the metal hydride air conditioning system. Studies on the factors affecting the COP of the system showed that higher COP and available hydrogen content need the proper operating temperature and cycling time,large hydrogen storage capacity, flat plateau and small hysterisis of hydrogen alloys, proper original input hydrogen content and mass ratio of the pair of alloys. It also needs small conditioning system was established by using LaNi4.61 Mn0.26 Al0. 13/La0.6 Y0.4 Ni4.8 Mn0.2 alloys as the working materials, which showed that under the operating temperature of 180℃/40℃, a low temperature of 13℃ was reached, with COP =0.38 and Wnet =0.09 kW/kg. 相似文献
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The relationship among the hydrogen storage properties, cycling characteristics and thermal parameters of the metal hydride air conditioning systems was investigated. Based on a new alloy selection model, three pairs of hydrogen storage alloys, LaNi4.4 Mn0.26 Al0.34 / La0.6 Nd0.4 Ni4.8 Mn0.2 Cu0. 1, LaNi4.61Mn0. 26 Al0.13/La0.6 Nd0.4 Ni4.8 Mn0.2 Cu0. 1 and LaNi4.61 Mn0.26 Al0.13/La0.6 Y0.4 Ni4.8 Mn0. 2, were selected as the working materials for the metal hydride air conditioning system. Studies on the factors affecting the COP of the system showed that higher COP and available hydrogen content need the proper operating temperature and cycling time,large hydrogen storage capacity, flat plateau and small hysterisis of hydrogen alloys, proper original input hydrogen content and mass ratio of the pair of alloys. It also needs small conditioning system was established by using LaNi4.61 Mn0.26 Al0. 13/La0.6 Y0.4 Ni4.8 Mn0.2 alloys as the working materials, which showed that under the operating temperature of 180℃/40℃, a low temperature of 13℃ was reached, with COP =0.38 and Wnet =0.09 kW/kg. 相似文献
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宣东矿业公司主要回风巷与边界风井测量贯通工程,是张矿集团公司近年来最大的井巷贯通工程。经过合理贯通测量设计,确定了正确的测量方案。经过广大测量人员的共同努力,测出了高精度的测量数据,取得了满意的巷道贯通成果。 相似文献