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热量表流量传感器耐久性试验装置采用现代化工业级采集、控制技术,将工业组态软件和数据库进行结合,实现了全自动化操作。通过光电传输、脉冲计数、协议通信、视频采集等方式获取运行信息,同时基于3G网络或互联网的视频采集技术,将现场运行画面实时传送至远端数据监控中心。试验的全部过程均为无人值守。同时还可自定义运行周期,同步记录热量表和系统的各项运行数据;可随时查看、导出、打印、分析各项数据。 相似文献
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我们已经研制出了飞行时间 TOF(Time of Flight)方法电荷态分布测量系统,并用该系统测定了MEVVA(MetalV por Vacuum Arc)源产生离子的电荷态分布。在实验中,把MEVVA源作为产生离子的手段;MEVVA源是一种新型的离子源,该源阴极材料及运行条件较宽,能够产生强流的多电荷态离子。电荷态谱是用TOF方法获得的,同时也测量了弧流及弧压降。在本文中,将介绍 TOF方法测量电荷态的原理、结构和一些初步的实验结果,对 MEVVA源也作了必要的介绍。 相似文献
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本文介绍了动力工程系叶片防磨涂层磨蚀试验装置系统结构、主要部件、允许试验参数及其主要特点。经过近千小时的试验,证明试验系统结构稳定,达到设计要求,能够进行各种涂层工艺和配方的对比鉴别试验,系统运行工况的调节和控制简单易行且运行稳定,每次试验可在高、低温两个试验区同时进行。 相似文献
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温度对炭/炭材料摩擦性能影响 总被引:1,自引:0,他引:1
本文研究了炭/炭(C/C)复合材料湿态摩擦性能。考察了在湿态下刹本能量、刹车比压对化学气相沉积C/C复合材料摩擦性能的影响规律,试验结果表明:环境湿度强烈地影响着C/C复合材料的摩擦学性能,在湿态下其摩擦系数减小;随着刹车能量、刹车比压的增加,摩擦系统进一步衰减。 相似文献
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镁合金的应用受到其变形能力差、耐腐蚀性差的制约。为推广镁合金应用,采用低合金化设计并制备了新型Mg-0.12Ca-0.08Ba合金,通过NaCl溶液浸泡试验、SEM、EDS分析和电化学测试等手段考察了其在3.5%NaCl溶液中的腐蚀行为。实验结果表明:随着腐蚀时间的延长,挤压态及挤压退火态Mg-0.12Ca-0.08Ba合金表面由局部点蚀变为大范围面腐蚀,腐蚀产物逐渐增多,腐蚀产物主要为MgO、Mg(OH)2,合金表面的线粗糙度、面粗糙度明显增大,析氢速率逐渐减小。与挤压态镁合金相比,退火态合金析氢速率较慢,开路电位更高,腐蚀电流更小,表明退火态合金耐腐蚀性能较好。 相似文献
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10兆瓦高温气冷实验堆仿真和控制设计集成系统研究 总被引:1,自引:0,他引:1
开发了结构紧凑、扩展性强、人机界面友好的高温堆可视化仿真和控制集成系统HTRSC。它采用代码算法和模型数据分离的仿真建模方法,基于球床式高温气冷堆系统分析程序THERMIX,具有工程设计、控制研究、自动组态和过程仿真等多种功能,实现了高温堆仿真和控制系统可视化设计的有机结合。HTRSC不仅对HTR-10的设计、运行和培训具有实用意义,而且其建立思想和系统结构对其他堆型的仿真系统的研究也有相当的参考价值。 相似文献
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Seungo Gim Illhwan Lee Jae Yong Park Jong‐Lam Lee 《Small (Weinheim an der Bergstrasse, Germany)》2017,13(23)
A flexible hazy substrate (FHS) with embedded air bubbles to increase light extraction efficiency of organic light‐emitting diodes (OLEDs) is reported. In order to embed the air bubbles in the flexible substrate, micropatterned substrates are fabricated by plasma treatment, and then coated with a planarization layer. During the planarization layer coating, air bubbles are trapped between the substrate and the planarization layer. The haze of the FHS can be controlled from 1.7% to 68.4% by changing the size of micropatterns by adjusting the plasma treatment time. The FHS shows average haze of 68.4%, average total transmittance of 90.3%, and extremely flat surface with average roughness (R a) of 1.2 nm. Rigorous coupled‐wave analysis and finite‐difference time‐domain simulations are conducted to demonstrate that the air bubbles in the substrate can effectively extract photons that are trapped in the substrate. The FHS increases the power efficiency of OLEDs by 22% and further increases by 91% combined with an external extraction layer. Moreover, the FHS has excellent mechanical flexibility. No defect has been observed after 10 000 bending cycles at bending radius of 4 mm. 相似文献
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核电站运行时,阀门是最易发事故的设备之一,为了确保核电站的安全,必须选用安全可靠的阀门,10MW高温气冷堆中的氦气阀门有十多个品种,300多台,这些阀门是高温气冷堆中面广量大的承压设备。它们连接着高温气冷堆中众多的系统,对于保证高温堆的正常稳定运行及安全停堆起着重要的作用。本文简略地介绍了10MW高温气冷堆对氦气阀门 要求。核级氦气阀门的设计、检验和出厂试验。 相似文献
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流体热混合效果评价标准及其在高温气冷堆热气联箱混合性能实验中的应用 总被引:4,自引:0,他引:4
10MW高温气冷实验堆(HTR-10)堆芯出口氦气温度(平均700℃)径向分布很不均匀,设置在堆底反射层中的堆芯出口热气联箱的作用就是使氦气在其中得到充分的热混合。本文从热力学定律出发,探讨了流体温度均匀度和混合器性能评价标准。依据混合器出口温度最高值与最低值之差定义了温差混合度;依据热力学第一定律定义了热焓混合度;依据热力学第二定律定义了熵产混合度。比较了这几种混合器性能评价标准并应用到热气联箱混合性能的评价工作中。 相似文献
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In view of the three-dimensional dynamic abutment pressure, the influence of the far-field hard stratum (FHS) in deep, thick coal seams is indeterminant. Based on elastic foundation theory, a three-dimensional dynamic
prediction model of the abutment pressure was established. Using this model,
the dynamic change in the coal seam abutment pressure caused by the movement
of the FHS was studied, and a method for determining the dynamic change
range of the abutment pressure was developed. The results of the new prediction
model of the abutment pressure are slightly higher than the measured values,
with an error of 0.51%, which avoids the shortcomings of the results because
the Winkler foundation model results are lower than the measured values and
have an error of 9.98%. As time progresses, the abutment pressure and its
distribution range are affected by the FHS movement, which has the characteristics of gradually increasing dynamic change until the FHS fractures. The peak
value of the abutment pressure increases linearly with time, and the influence
range increases with time following a power function with an exponent of less
than 1. The influence range of the FHS movement on the abutment pressure
ahead of the working face, behind the working face, and along the working
face is 10 times, 25 times, and 17 times the mining thickness, respectively.
According to the actual geological parameters, the dynamic change range of
the coal seam abutment pressure was determined by drawing an additional stress
curve and by determining the threshold value. These research results are of great
significance to the partition optimization of the roadway support design of deep,
thick coal seams. 相似文献