Results 11 to 20 of about 4,601 (149)
Criterion equations and influencing factors of air flow around steel slag particles [PDF]
, 2016 The experiment of air flowing high-temperature steel slag particles was done and the experimental correlation of non-di-mensional average Nusselt number was fitted.
LI Qi, MI Sha, SUN Dai, XIE Kai
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Gaoya dianqi, 2021 为研究红外及紫外成像技术检测零值绝缘子的有效性,试验采集了不同湿度和污秽度下,零值绝缘子处于绝缘子串不同位置时的红外热像图和紫外视频,分析了绝缘子串的发热、放电特性。利用有限元软件建立了热—电耦合场仿真模型,计算验证了不同条件下绝缘子串的温度及电场分布。研究表明:污秽干燥条件下,绝缘子串不易放电,紫外成像法无法有效检测零值绝缘子,红外热像图显示正常绝缘子的温升明显高于零值绝缘子温升,红外成像法可以有效检测零值绝缘子;污秽湿润条件下,由于高电导率的重污秽以及污秽受潮的不均匀性 ...
王胜辉 +4 more
doaj
Aprediction model for the very high cycle fatigue life for inclusion-FGA (fine granular area) -fisheye induced fatigue failure [PDF]
, 2017 A prediction model for the very high cycle fatigue life for inclusion-fine granular area (FGA) -fisheye-induced failure was studied in this work. Combined with the experimental results of Cr-Ni-W alloy steel, a local crack initiation life model (LCIL ...
DENG Hai-long +3 more
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Dianci bileiqi, 2021 红外测温凭借其高效、精确等优点,在特高压避雷器带电检测中发挥了重要作用,然而避雷器表面温度会受到风速、光照等外界因素的影响,给红外测温及故障诊断带来了一定的困难。笔者基于有限元原理建立了特高压交流避雷器热电耦合的三维温度场仿真模型,并通过现场温度试验验证了模型的合理性,从而利用该模型对不同风速、光照影响下的避雷器温度分布进行仿真分析,结果表明:风速增大加强了空气对流散热,使得避雷器内部缺陷发热导致的表面最高温度下降,温升减小;避雷器表面温度随太阳辐射强度的增大而升高,且向阳侧高于背阳侧,但温升值变化不大。
史晓航 +4 more
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Study on microwave ignition behavior of inferior bituminous coal assisted by coke under dynamic particle spacing [PDF]
In China’s power system, low-volatile coals represented by inferior bituminous coal and coke exhibit significant production output, yet their application in coal-fired power generation is constrained by their low-volatile characteristics.
Guangbo ZHAO +5 more
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A Technology and Application of Fiber Temperature Sensor for High Voltage Circuit Breaker [PDF]
, 2015 随着中国经济的高速发展，电网规模的日益庞大，高压断路器作为电力系统中必不可少的电气设备之一，其工作状态是否正常关乎整个电力系统能否安全高效地运行。为了避免高压断路器因电阻过大或其他故障引起的局部温度超过国家标准而引发停电、火灾等大规模事故，对高压断路器的温度进行实时监测是十分必要的。 针对10KV断路器在线温度监测难的问题，本文提出一种基于反射式强度调制的光纤温度传感系统。本温度传感系统具有非接触、抗电磁干扰能力强、安装便利、性能稳定等优点，此外，本文选用双金属片作为温度敏感元件，价格低廉 ...
单晓宇
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Development and Experiment of Green Cutting Device
, 2017 该金属切削装置基于绿色制造技术,通过绿色金属切削加工实验,用显微技术对加工结果进行工艺分析,表明该装置使用微量绿色金属切削液,能够取得与传统湿切削相同的加工性能,减少环境污染,降低加工成本。Green manufacturing technology based on the metal cutting device,through the experiment of green metal cutting,using micro technology on processing results for
刘万山 +4 more
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Wall-thickness reduction of AP1000 primary coolant pipes subjected to cold roll-forming [PDF]
, 2016 A modified Johnson-Cook model was proposed based on the true stress-strain data of 316LN stainless steel and it was successfully used to describe the deformation characteristic of the steel at room temperature and low strain rate.
WANG Peng +3 more
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Integrative Conservation, Volume 5, Issue 1, Page 74-85, March 2026.This study investigates distribution patterns of Galliforms in the Indian Himalayas, focusing on factors influencing their occurrence, regions of high diversity and endemism, and their overlap with protected areas. Our study highlights the need for assemblage‐level conservation strategies in high Himalaya which primarily relies on snow leopard‐focused ...
Manvi Sharma +5 more
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Design of new type of medical infrared temperature measuring instrument [PDF]
, 2016 目的:针对市场现有的测温仪的弊端,设计一种新型医用红外测温仪。方法:采用红外线温度传感器采集人体温度,以HT67F5640芯片为主控制器,通过A/D转换把检测的人体温度显示在液晶显示器(liquid crystal display,LCD)上。该仪器设计的电路包括主控制电路、电源电路、红外温度传感器电路、LCD驱动电路、按键电路、报警电路等;软件部分包括主程序,AD采集、LCD显示、蜂鸣器报警以及按键扫描等子程序。结果:该医用红外测温仪测量体温速度快、精度高、重复性好,医务人员反应良好。结论 ...
刘暾东 +4 more
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