查询词典 steam

Firstly, the meaning of dynamic analysis on the steam turbine-generator set foundation is pointed out. Review and comment on the present research on dynamic analysis of domestic and international steam turbine-generator sets are presented Then a dynamic calculating model of the framed foundation of the steam turbine-generator set is set up based on finite element theory. Then dynamic analysis methods are put forward based on dynamics theory. The dynamic design of the foundation of the specific 12,000KW steam turbine-generator set is carried out.

论文首先指出汽轮发电机组基础动力分析的意义，并对国内外汽轮发电机组基础动力分析的研究现状进行了回顾及评述；其后，利用有限元原理建立了汽轮发电机组框架式基础的动力计算模型，根据动力学理论对该模型提出了自由振动分析和动力响应分析的方法，针对某工程12000KW汽轮发电机组的动力基础进行了动力设计。

For the purpose of this insurance a Steam Turbine Generator shall comprise the steam turbine and generator complete including exciter and generator cooling plant but not beyond the limits of the inlet steam stop-valve generator terminals or condenser steam inlet point.

为了本保险合同目的，一个蒸汽涡轮发电机包括蒸汽涡轮机、发电机，其中发电机包含励磁机和发电机制冷设备，但该机组以蒸汽进口截止阀、发电机接线柱或蒸汽冷凝器入口点为限。

Contract:This article disausses the principal of main steam temperature control system according the problems in running,including the unreasonable main steam pressure set point volue,hot air injection flow is not acciurate,Charge of steam temperature has the big delay and the common PID can′t satisfy the regulate′s demandthen take the according measures,adopt smith predictor,change to ABB intelligent positioner,add the hot air injection antiblock device,test the main steam temperature automation and optimization the specificator.

中国国电集团公司菏泽发电厂热工，山东摘要：本文论述汽温控制系统组成原理，针对运行中发现的问题，包括一次风母管压力自动设定值设计不合理，导致主汽温度和再热汽温度变化幅度加大，底部注入风量和汽温参数测量不准确，汽温变化迟延大，常规PID满足不了调节要求，采取了相应措施，改用史密斯预测器，更换为ABB定位器，增加底部注入风量等测点防堵装置，并对主汽温自动进行试验和参数优化。

Lever Ball Float Steam Traps biggest advantage is not subject to pressure,temperature,cooling water flow fluctuations,continuous drainage,a water that row,the minimum cooling degree 0℃,能使best efficiency heating equipment;lever float steam trap valve seat total in the following level,forming awater seal,no steam leakage;itsPlug Valves minimum working pressure 0.01Mpa,the maximum back pressure rate of≤85%;interior with exhaust,lever float steam traps use the most advanced components as the automatic emptying of diaphragm valves,can automatically exclude non-condensing gas,very sensitive,high quality work and long service life.

杠杆浮球式蒸汽疏水阀的最大优点是不受压力、温度、冷凝水流量波动的影响，连续排水，有水即排，最小过冷度为0℃，能使加热设备达到最佳工作效率；杠杆浮球式蒸汽疏水阀的阀座总处于液位以下，形成水封，无蒸汽泄漏；它的最低工作压力0.01Mpa，最大背压率≤85%；内部带有排气装置，杠杆浮球式蒸汽疏水阀采用最先进的膜盒元件做为自动排空气阀，能自动排除不凝结气体，非常灵敏，工作质量高，使用寿命长。

Secondly, the flow of condensation steam was compared with the flow of ideal gas. From the contrasted results, it can be found the difference between the condensative steam flowing and ideal-gas flowing. And, it also can be found out that it is inevitable to condense for steam flowing under the supersonic state. At the same time, the major areas which formed second drips have been displayed in the solved results. Finally, the flow of condensation steam in the 3-dimension model has been simulated.

其次，对比了具有凝结的蒸汽与理想气体之间的流动情况，经过对比可以发现凝结蒸汽在流动中与理想气体之间的差异，发现蒸汽的凝结在超音速状态下是不可避免的，并且在计算结果中通过图形显示出了形成二次水滴的主要区域。

After Huang Qu senior official yellow Jinlong carries on the contact to finish, immediately defers to the planning for action which formulates in advance, leads side one group of terse motion members, nonstop is rapid rushes recent to the control center, nearly with the ellipse planetoid rugged surface, nearby the flatwise bend thorough giant steam hole, sees only this hole diameter to have about fully 200 meters, this time fierce toward the outside is erupting the pressure full steam; Huang Qu senior official yellow Jinlong earnestly examined without enough time that, then immediately lets the retinue survey group with the most advanced laser analyzer, surveyed has spouted the steam the temperature, the pressure as well as includes other material each data, obtained the data and formerly obtained the data astonishing consistency, in which vapor temperature reached as high as 500 degrees, about the pressure 50 atmospheric pressure, most worrying was in this steam includes some kind of humanity's unknown micro material, possible ambush some kind of unexpected danger, to be needing the further experimental analysis, could obtain the correlation the conclusion!

黄区长官黄金龙进行联络完毕后，就马上按照预先制定的行动计划，带领身边一批精悍的行动队员们，马不停蹄迅速赶到离指挥中心最近的，几乎与椭圆小行星崎岖不平的表面，平直弯曲深入的巨大蒸汽孔洞跟前，只见这个孔洞直径足有200米左右，此时正剧烈的往外喷发着压力十足的水蒸气；黄区长官黄金龙来不及认真查看，便马上让随行探测小组用最先进的激光分析仪，测量了一下喷出蒸汽的温度、压力以及含有其他物质的各项数据，得出的数据和先前得到的数据惊人的一致，其中蒸汽温度高达500度，压力50个大气压左右，最令人担心的是此蒸汽中含有某种人类未知的微量物质，可能潜伏着某种意想不到的危险，需要进一步的试验分析，才能得出相关的结论！

Lever Ball Float Steam Traps are not subject to the greatest advantage of pressure, temperature, condensate water flow fluctuations, continuous drainage, water that is exclusive, the Butterfly Valves minimum undercooling of 0 ℃, heating equipment can achieve the best efficiency; Lever Ball Float Steam Traps seat total in the level below, the formation of water seal, no steam leakage; its minimum working pressure 0.01Mpa, the biggest back-pressure rate of ≤ 85%; house with an exhaust device, lever float steam trap uses the most advanced components as the automatic emptying of diaphragm valves, can automatically rule out non-condensing gas, very sensitive, high-quality work and long service life.

杠杆浮球式蒸汽疏水阀的最大优点是不受压力、温度、冷凝水流量波动的影响，连续排水，有水即排，最小过冷度为0℃，能使加热设备达到最佳工作效率；杠杆浮球式蒸汽疏水阀的阀座总处于液位以下，形成水封，无蒸汽泄漏；它的最低工作压力0.01Mpa，最大背压率≤85%；内部带有排气装置，杠杆浮球式蒸汽疏水阀采用最先进的膜盒元件做为自动排空气阀，能自动排除不凝结气体，非常灵敏，工作质量高，使用寿命长。

It's an effective measure of fast valving in improving the dynamic stabilities of power system and preventing the overspeed of steam turbines, but the fast valving technique available can satisfy the need of modern steam turbines no more. On the basis of the new type fluid logic valve, which combines the regulating systems and safety systems happily, the steam turbine EHC based on new principle is put forward, one of its outstanding characteritics is, the fast valving is operating in a closed control loop. For the implementation of control for steam generator regulation and safety systems with nonlinear mult-operating modes, a new methodology for designing a fuzzy logic controller is proposed, which is based on the combination of"error phase plane"and"variable universe of discourse". Application of a double-mode FLC with the new methodology is presented, the validity of the design methodolody is desmonstrated by test; A new methodolody is also presented to improve the design and tuning of a FLC using variable structure control theory.

本文还详细讨论了快关控制在提高电力系统暂态稳定性及超速保护中的应用，分析了现有的快关控制规律的局限性，研究出一种基于新型快关阀的汽轮机电液控制系统，其突出特点是使汽轮机闭环快关成为现实，指出这种基于新的组成原理与设计方法的汽轮机电液控制系统对不同工况下的适应能力；针对汽轮发电机组多工况、非线性的特点，提出一种把&误差相平面&方法与&可变论域&思想有机结合的双模FLC设计与调整的新方法，试验结果表明该系统具有良好的动、静态特性；为改善FLC控制规则的设计与调整，作者还介绍了一种把滑模变结构理论成功应用于模糊系统设计的新方法。

For the second steam, we usually use the steam valve seal as follows: Structural characteristics Metal seal, increased temperature Mud Valves and lifetime use of the product Material selection reasonable guidance suite valve cup and clever use of fluid lubrication to reduce wear and tear Other purposes - steam valve seal This product is broader general Gauge Valves media can be used separately in water, light oil, heavy oil, gas and steam and other non-corrosive fluid.

对于第二种蒸汽，我们通常会选用硬密封的蒸汽电磁阀如下：结构特点采用金属硬密封，提高了产品的使用温度及使用寿命选材合理，阀杯和导向套间巧妙地利用眼镜阀流体的润滑作用，以减少磨损其他用途-硬密封蒸汽电磁阀本产品通用介质范围较广，可分别使用于水、轻油、重油、非腐蚀性气体及蒸汽等流体。

As an important auxiliary machine of turboset, condensing equipment serves as the cold source during thermal circulation of condensing turboset in the power plant and plays an important role in security, economy and operation of the power plant, mainly aiming at condensing the exhaust steam of steam turbine into water, setting up and maintaining a certain vacuum degree in the air extraction outlet of steam turbine, and also conveying condensation water to steam generator so as to reuse.

凝汽设备是汽轮机组的一个重要辅机，在电厂凝汽式汽轮机组的热力循环中，凝汽设备起着冷源的作用，它对整个电厂的安全、经济运行具有重要作用。它的主要任务是将汽轮机排汽凝结成水，在汽轮机排汽口建立与维持一定的真空度；并把凝结水送回蒸汽发生器继续使用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。