过热蒸汽

The theoretical frequencies of pressure perturbation coincide acceptably with those of temperature from experiments.

蒸汽膜中的少部分蒸汽在液体侧不断凝结，释放出的潜热用于流来的过冷液体达到饱和状态所需要的显热。

In the boiler drum, superheater, export and re-heat the import and export with spring-loaded safety valve.

为了保证过热器安全阀的使用性能，在主蒸汽出口管道上安装了国外制造的102 —TAL MATIC 型电动释放阀。

However, sometimes the steam pipe comes out of the boiler, and get fed through the fire again, this is called superheater.

但是，有些锅炉的蒸汽管道出来后又返回加热，这种叫做过热器。

Analyzes reasons for tube blasting of steam superheater and recommends a kind of tube material which can better satisfy production requirements.

通过对蒸汽过热炉爆管原因进行分析，提出一种更能满足生产需要的炉管材料。

Superheated steam and volcanic gases and dust, with temperatures reaching over 1000 C. flattened the buildings in the city and the entire population burned or suffocated to death. When I visited beautiful Martinique in 1989, and saw the jail cell, which still stands, Sylbaris was said to be the only survivor, but in fact there was one other man and possibly two children.

过热的蒸汽，火山的热气，火山灰，以及1000度以上的高温摧毁了整座城市所有的建筑，所有人都被烧死或熏死。1989年当我到访美丽的马提尼克岛时，参观了这个监狱，它至今依然矗立，据说Sylbaris是当时唯一的幸存者，但事实上还有一个人甚至两个孩子幸存。

More experimental data of condensation heat transfer coefficient, especially ones obtained at some determined pressure of mixtures and concentration of noncondensable gases, are required in order to make a data bank. Therefore, the experiment is arranged for steam-air condensing on the outside of a horizontal smooth tube, and 405 data have been obtained for the pressure of the bulk mixture covering 0.1～0.5bar and the mass fraction of air 0.3%～10.0%.

得到了一些重要结论，尤其是首次得到了&同样含量的空气对压力较高的混合气体冷凝换热的削弱作用较小&、&蒸汽侧冷凝换热系数近似与空气质量成分的对数成正比关系&、&空气含量的增加对蒸汽侧冷凝换热系数的影响随壁面过冷度增大而减小&及&管内冷却水流速取值范围的上、下限随管外蒸汽侧空气含量的增大而减小&等结论，并验证了在本文实验范围内&蒸汽侧冷凝换热系数与相同温度下纯净饱和蒸汽凝结换热系数的Nusselt理论预测结果的比率随壁面过冷度增大而减小&的数值分析结论〓。

According to design requirements, P122 steel is selected for outlet header of final superheater and main steam piping on boiler side of Yuhuan Project

根据设计要求，玉环工程锅炉末级过热器出口联箱及炉侧主蒸汽管道选用P122 钢。

The hot helium temperature follows HTR-10's nuclear power changes slowly, and there is a large coupling between them, so the RPHHT system adopts cascade control, the minor loop is fast, and the major loop is hot helium temperature control loop whose dynamic response is slow; there is also a large coupling between main helium loop and steam-water loop, and both the main steam temperature measure signal and the heating process of the once-through steam generator are delayed, therefore, the MHFMST applies cascade control, the minor is main helium flow control loop whose dynamic response is fast, and the major is the main steam temperature control loop whose dynamic response is slow.

本文运用机理建模法，建立了HTR-10系统动态控制模型，然后进行了动态性能仿真，将堆芯用集中参数表示，冷却剂按一维流动处理；直流蒸汽发生器按二回路工质不同的相分为预热段、蒸发段和过热段，建立了三环节控制模型，得到HTR-10系统控制模型；仿真结果与数值计算结果对比表明，本文所建立的控制模型，能近似地反映HTR-10的动态特性，适合设计控制系统。

By setting up the mathematical models of the regulating objects （combusting heat transfer, heat utilization and storage, superheater and main steam pipe line）, by combining heat transfer function of regulating system and by selecting method of setting PID accoding to set attenuation index object, the corrections among PID and pulverized coal＇s caloric values are found. Now the PID can be set according to caloric values of the pulverized coal burned in the unit and the automatic control can be put into operation.

通过建立调节对象四个环节（燃烧传热过程、热量的利用和储存过程、过热器、主蒸汽管道）的数学模型，结合调节系统的传递函数，选用按给定衰减指数设定PID参数的方法，找出PID参数与煤粉热值的关系式，最终达到在机组燃烧不同热值的煤粉时可依据该方法设定不同的PID参数、并都能投自动的目的，从而有利于提高机组的稳定性，并可节约煤粉。

Set up appropriate heat regenerative channel of steam to directly flow partial steam until the condenser bottom.

布置适当的蒸汽回热通道，使部分蒸汽直接通到凝汽器底部再加热凝结水，以减小进入热井凝结水的过冷度

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。