排序方式: 共有38条查询结果,搜索用时 15 毫秒
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结合国投新疆罗布泊钾盐有限责任公司年产120万吨钾肥项目,介绍了集成架构理念,智能MCC控制方式,从顶层工作站对底层电机监控的实现. 相似文献
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GJB/Z 148-2006《军用电容器选择与应用指南》提出的10℃法则,是表征元件寿命与温度应力关系的简便估算方式,它对于估算实际的使用条件下多层瓷介电容器的长期贮存寿命有着重要的意义。列举了国外对于多层瓷介电容器激活能的研究成果,并通过经典的温度加速模型与10℃法则的关系,证明了10℃法则对于多层瓷介电容器的加速寿命试验的适用性;同时认为根据10℃法则进行贮存寿命试验所得到的结果比使用经典的温度加速模型得到的结果更加可信。 相似文献
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硅橡胶表面润湿特性对积污行为影响的研究进展 总被引:1,自引:0,他引:1
介绍了电力系统中污闪事故的现状及相应的预防措施,阐述了硅橡胶表面润湿特性及相关模型与硅橡胶表面积污行为的相互作用关系,指出了硅橡胶的润湿性与表面积污行为的的复杂关系。由于硅橡胶表面的憎水性及憎水迁移性,使其具有优异的防污闪性能;而又由于憎水迁移性的存在导致硅橡胶表面的污秽具备"反清洁"能力。文中讲述了国内外学者在自然环境、工频电场及紫外辐照条件下硅橡胶表面润湿特性对积污行为影响的研究进展,并指出了目前这方面研究尚存的问题,展望了硅橡胶表面润湿特性与积污行为的研究方向。 相似文献
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金竹山矿区软岩掘进中注浆技术的应用 总被引:1,自引:1,他引:0
本文根据金竹山矿区底板大巷的地层特殊情况,介绍了注浆技术在软岩掘进中的应用,以及所取得的安全技术效果。实践证明,注浆技术在软岩掘进中是一种行之有效的加固方法。 相似文献
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The urgency and necessity of alternative fuels give an impetus to the development of modern coal chemical industry. Coal-based methanol/DME is the key element of this industry. Wind power, whose installed capacity increased at a rate of more than 100% in recent years, has the most developed technologies in renewable energy. However, there still exist many unsolved problems in wind power for on-grid utilization. A new integrated system which combines coal-based methanol/DME production with wind power is proposed in this paper. In this system, wind power is used to electrolyze water to produce H2 and O2. The O2 is fed to the gasifier as gasification agent. The H2 is mixed with the CO-rich gas to adjust the H2/CO to an appropriate ratio for methanol synthesis. In comparison with conventional coal-based methanol/DME system, the proposed system omits the expensive and energy-consuming ASU and greatly reduces the water gas shift process, which brings both advantages in the utilization of all raw materials and significant mitigation of CO2 emission. This system will be attractive in the regions of China which have abundant wind and coal resources. 相似文献
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Weidou NI Jian GAO Zhen CHEN Zheng LI 《Frontiers of Energy and Power Engineering in China》2009,3(1):94-98
The urgency and necessity of alternative fuels give an impetus to the development of modern coal chemical industry. Coal-based
methanol/DME is the key element of this industry. Wind power, whose installed capacity increased at a rate of more than 100%
in recent years, has the most developed technologies in renewable energy. However, there still exist many unsolved problems
in wind power for on-grid utilization. A new integrated system which combines coal-based methanol/DME production with wind
power is proposed in this paper. In this system, wind power is used to electrolyze water to produce H2 and O2. TheO2 is fed to the gasifier as gasification agent. The H2 is mixed with the CO-rich gas to adjust the H2/CO to an appropriate ratio for methanol synthesis. In comparison with conventional coal-based methanol/DME system, the proposed
system omits the expensive and energy-consuming ASU and greatly reduces the water gas shift process, which brings both advantages
in the utilization of all raw materials and significant mitigation of CO2 emission. This system will be attractive in the regions of China which have abundant wind and coal resources. 相似文献