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电弧炉的新型载流系统
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作者 A.Kurbiel 李志宏 肖俊明 《铁合金》 北大核心 1989年第3期50-51,49,共3页
1.简介电弧炉的二次电压很低而二次电流很大,所以它的载流系统(俗称短网)显得非常重要。载流系统感抗高,会使电炉输出功率降低,增加单位产品能耗;结构上不对称则会导致活跃相和沉寂相的产生,即各相功率不平衡,进而使炉料熔化不一致,影... 1.简介电弧炉的二次电压很低而二次电流很大,所以它的载流系统(俗称短网)显得非常重要。载流系统感抗高,会使电炉输出功率降低,增加单位产品能耗;结构上不对称则会导致活跃相和沉寂相的产生,即各相功率不平衡,进而使炉料熔化不一致,影响炉子工作性能。图1,是传统的电弧炉载流系统。这种系统感抗较大,功率不平衡较严重。 展开更多
关键词 电弧炉 载流系统
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载流摩擦磨损系统研究 被引量:17
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作者 董霖 陈光雄 周仲荣 《润滑与密封》 CAS CSCD 北大核心 2009年第7期102-106,共5页
基于摩擦学的三公理,对载流摩擦磨损的机制进行研究,建立了载流摩擦磨损的系统构成图、功能平面图、微观接触的电接触状态图和载流摩擦磨损电传导电路模型,分析了火花和电弧产生的原因,得到了载流磨损量与法向载荷之间的关系模型,较好... 基于摩擦学的三公理,对载流摩擦磨损的机制进行研究,建立了载流摩擦磨损的系统构成图、功能平面图、微观接触的电接触状态图和载流摩擦磨损电传导电路模型,分析了火花和电弧产生的原因,得到了载流磨损量与法向载荷之间的关系模型,较好地解释了电因素对摩擦磨损的作用,为载流摩擦磨损的研究建立了理论分析基础。 展开更多
关键词 摩擦系统 摩擦磨损
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同位素载流分析系统的技术改进实践
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作者 尹泽辉 戈尔谷 《世界仪表与自动化》 2000年第4期30-33,共4页
关键词 原矿品位 同位素分析系统 选矿 技术改进
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特高压直流隔离开关载流技术研究 被引量:3
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作者 李宇鹏 付亚旭 +11 位作者 郭海涛 王巧红 孙龙勇 姚灿江 娄文亮 杨晓涵 张鸣帅 李竞 夏立国 张任 芦珂 张九霞 《高压电器》 CAS CSCD 北大核心 2022年第12期1-8,共8页
1 120 kV特高压直流隔离开关的核心问题在于其通流能力,而载流系统的接触部位温升大小决定了隔离开关的通流水平。文中从接触电阻理论出发,研究了接触压力与接触点数对接触电阻的影响规律,设计了一种双层环形触指/触头载流结构,开发了... 1 120 kV特高压直流隔离开关的核心问题在于其通流能力,而载流系统的接触部位温升大小决定了隔离开关的通流水平。文中从接触电阻理论出发,研究了接触压力与接触点数对接触电阻的影响规律,设计了一种双层环形触指/触头载流结构,开发了环形触指的制造加工工装及加工工艺流程,并在环形触指/触头的基础上设计出了高载流技术的新型1 120 kV特高压直流隔离开关。为进一步研究隔离开关载流性能,文中对触指/触头接触部位进行了独立的电—热耦合分析,结果显示载流系统最大温升61.56 K,满足国标规定的温升值65 K。最后,通过隔离开关载流系统温升试验、动热稳定试验以及直流隔离开关整机的绝缘试验,进一步验证了设计的载流系统的可靠使用性能。 展开更多
关键词 隔离开关 载流系统 接触电阻 环形触指 温升试验
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Excess Heat Triggered by Different Current in a D/Pd Gas-Loading System 被引量:3
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作者 Xin Lu Bingjun Shen +3 位作者 Lihong Jin Xinle Zhao Hongyu Wang Jian Tian 《Journal of Energy and Power Engineering》 2013年第7期1299-1303,共5页
In order to study the relationship between the triggering current, deuterium pressure and the excess heat, a series of experiments were made in a D/Pd gas-loading system. By comparing the system constants (k = AT//kP... In order to study the relationship between the triggering current, deuterium pressure and the excess heat, a series of experiments were made in a D/Pd gas-loading system. By comparing the system constants (k = AT//kP) in both nitrogen and deuterium atmosphere we found an optimum current (8 A) and a deuterium pressure (9 x 104 Pa) in which the system could release a maximum excess power (more than 80 W). The reproducibility was 16/16 and the excess energy released in the longest experiment was about 300 MJ within 40 days, which was corresponding to 104 eV for each palladium atom. Analysis of the palladium surface with a SEM (scanning electron microscopy) and an EDS (energy dispersive spectrometer) revealed that some new surface topographical feature with concentrations of unexpected elements (such as Ag, Sn, Pb and Ca) appeared after the current triggering. The results implied that the excess heat might come from a nuclear transmutation. 展开更多
关键词 Current triggering deuterium pressure D/Pd gas-loading system excess heat.
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The concept, connotation and method of representation of watershed water environment carrying capacity (WWECC) 被引量:3
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作者 MENG Qing-bin ZHANG Xue SHEN Zhen-yao 《Journal of Environmental Science and Engineering》 2009年第3期37-42,共6页
Based on the relationship between water environment system and human society, water environment carrying capacity (WECC) probes into supporting ability of complex water environment system to the human society. Recen... Based on the relationship between water environment system and human society, water environment carrying capacity (WECC) probes into supporting ability of complex water environment system to the human society. Recent years, due to the shortage of water resources and serious water pollution in several watersheds in China, the research of watershed water environment carrying capacity (WWECC) becomes very important. The conception, connotation and method of representation of WWECC are discussed deeply in this paper. It shows that WWECC is a kind of index that instructs whether the water environment system in watershed can continue to support the development of social economy and ecology, it is dimensionless number. 展开更多
关键词 watershed water environment carrying capacity(WWECC) water environment carrying capacity (WECC) CONCEPTION CONNOTATION method of representation
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