超超临界压力,ultra supercritical pressure
1)ultra supercritical pressure超超临界压力
1.Taking the construction project of gigawattultra supercritical pressure power generating units in some power plant as an example,this paper makes a technical and economic analysis on the feasibility of frequency control technique of motors.以某电厂吉瓦级超超临界压力机组建设工程为例,对电动机应用变频调速技术的可行性进行了技术和经济分析,并提出建议:对于电厂中额定功率小于3。
2.The startup process and the structure,function of starting system of domestic 1 000 MWultra supercritical pressure once-through boiler are presented.介绍了国产1000MW超超临界压力直流锅炉的启动过程及启动系统的结构、功能,阐述了启动过程中汽水分离器各阀门动作的水位控制逻辑原理,包括锅炉再循环水流量控制、液位调节阀控制、炉水循环泵暖管疏水排放阀控制等。
英文短句/例句
1.Material Analysis for High-temperature Components of Ultra Supercritical Pressure Boilers超超临界压力锅炉高温部件材料简析
2.R&D of T92 High-pressure Boiler Tube for Ultra Supercritical Pressure Boilers超超临界压力锅炉用T92高压锅炉管的研制
3.In-furnace Heat Transfer Formula for Large-capacity Supercritical and Ultra-supercritical Pressure Boilers大容量超临界和超超临界压力锅炉炉膛传热公式
4.Ultra-supercritical coal-fired boiler used in Shin-Isogo Power Station日本新矶子电站超超临界压力煤粉锅炉
5.Choosing of High-temperature Steam Pipe Materials for 1000MW Ultra Supercritical Pressure Units超超临界压力1000MW机组高温蒸汽管道材料的选用
6.Trouble Analysis and Treatment for the Pulverizing System of a 3033t/h Ultra Supercritical Pressure Boiler3033t/h超超临界压力锅炉制粉系统故障分析及改进措施
7.Water-level Control of Water Separator during Startup of Domestic 1000 MW Ultra Supercritical Pressure Once-through Boiler国产1000MW超超临界压力直流锅炉启动过程中汽水分离器水位的控制
8.Analysis of fluctuation of reheated steam temperature for 1 000 MW ultra-supercritical pressure once-through boilers and related retrofit1000MW超超临界压力直流锅炉再热蒸汽温度波动大的分析与改进
9.Study on Nonlinear Hydraulic Features of Water Circulation Systems at Supercritical Pressure超临界压力水循环系统非线性水动力特性研究
10.The Research of 1000MW Ultra-supercritical HP Feedwater Heater1000MW超超临界高压加热器的研制
11.Heat Transfer Analysis and Regression Evaluation of Fluids at Supercritical Pressures in Vertical Upward Ducts;超临界压力下竖直上升管传热分析与回归评价
12.Strategy Optimization and Commission on Primary Air Pressure Control in Supercritical Thermal Power Unit600MW超临界机组的一次风压力控制优化及调整
13.Numerical Simulation of Convection Heat Transfer for CO_2 at Supercritical Pressure in Vertical Circular Tube超临界压力CO_2在垂直管内对流换热数值模拟
14.CONVECTION HEAT TRANSFER OF CO_2 AT SUPERCRITICAL PRESSURES IN TUBE DURING COOLING冷却条件下管内超临界压力CO_2对流换热研究
15.Mechanical Stress Analysis of a 600 MW Supercritical Boiler Water Separator Based on the Finite Element Method600MW超临界锅炉汽水分离器内压应力有限元分析
16.Characteristic Analysis on Built-in Start-up System of Home-made Supercritical Units国产超临界压力锅炉内置式启动系统特性分析
17.Improvement of the accuracy and reliability of pressure signals in shaft gland seal system of ultra supercritical unit超超临界机组轴封系统压力信号准确性和可靠性的提高
18.Waterwall Characteristics of Ultra-supercritical Pressure Once-through Boilers with Vertical Tube Coils超(超)临界压力直流锅炉垂直管圈水冷壁特性的研究
相关短句/例句
supercritical pressure超临界压力
1.Measurements of coefficient of convective heat transfer for endothermic hydrocarbon fuel up tosupercritical pressures.;超临界压力下吸热型碳氢燃料的对流给热系数测定
2.Analysis and countermeasures of steam-excited vibration ofsupercritical pressure steam turbine;超临界压力汽轮机蒸汽激振问题分析及对策
3.In order to explore the underground heavy crude over 2000 meters in depth,a project of steam injection forsupercritical pressure steam generator was designed and compared with the project of hot water injection by raising pressure of the former set hot water boiler.为了解决埋深超过 2 0 0 0m的深层稠油开采难的问题 ,提出了一种超临界压力蒸汽发生器的开采方案 ,并与其他注汽方案进行了比较 ,同时研究了超临界压力热流体在地面管线和井筒中流动的规律。
3)supercritical pressures超临界压力
1.Convection heat transfer of CO2 atsupercritical pressures in a vertical tube (Din=2 mm) was investigated experimentally in order to study the effects of the variation of physical properties, buoyancy and thermal acceleration on the convection heat transfer.本文对超临界压力CO2在垂直圆管(Din=2 mm)内在高进口雷诺数和低进口雷诺数条件下的对流换热进行了实验研究,以研究变物性、浮升力和热加速对流动和换热的影响。
2.Convection heat transfer of CO_2 atsupercritical pressures in vertical small tubes with diameter of 1 mm was investigated experimentally.本文对超临界压力二氧化碳在内径为1mm的竖直细圆管中的对流换热进行了实验研究。
4)supercritical pressure unit超临界压力机组
1.Through analyzing,"two basic facts,one striking contradiction , existing in present thermalpower mix in China,it is thought that to develop such commercialized and matured electricity generation technology assupercritical pressure units is an effective way to improve thermal power mix;indicated that to developsupercritical pressure units is confronted with design, manufacturing and operationetc.通过分析目前我国火电结构存在的“两个基本事实，一个突出矛盾”，认为发展超临压力机组这种已商业化的、成熟的发电技术是改善火电结构的有效途径；指出发展超临界压力机组面临着设计、制造和运行等几项技术难点，认为应在掌握新知识和新技术的基础上，努力实现我国发展超临界压力机组的技术跨越。
2.1supercritical pressure unit of a certain power plant suffered severe pollution during commissioning,the turbidity of effluent water rising up to 3 NTU from the usual 0.某电厂1号超临界压力机组的原水池、预处理系统、除盐系统、废水处理系统在调试过程中发生了严重的污染,出水浊度由平时的0。
5)fluid at supercritical pressure超临界压力流体
6)supercritical pressure boiler超临界压力锅炉
延伸阅读
超临界压力锅炉超临界压力锅炉supercritical pressure boilerehoollnJ一e yol一guolu超临界压力锅炉(supereritieal pressure boil-er)主蒸汽压力超过临界压力22.12 MP。的锅炉称为超临界压力锅炉。通常大容量超临界压力电站锅炉的主蒸汽压力定在24.5 MPa左右，也有比之更高的。当主蒸汽压力达到27 MPa以上时(见蒸汽参数)，又称为超超临界压力锅炉(ultra super eritiealPressure boiler)。发展超临界或超超临界压力机组都是为了更有效地提高火力发电厂的经济性，因此对超临界压力锅炉还伴随着采用更高的汽温和更大的锅炉容t。妞临界压力锅炉技术特性由于水和蒸汽的压力超过临界压力后不可能有汽水双相混合物共存，因此超临界压力锅炉只能采用没有锅筒的直流锅炉。超临界压力也体现了当代电站锅炉最先进的技术。与亚临界锅炉相比，由于蒸汽参数更高，因此在锅炉受压元件的设计时需要采用更高等级的材质，并需要更完善的强度设计和寿命分析;由于它是直流锅炉，因此其水冷壁系统的设计与锅筒式锅炉有很大区别，并且还需要设t一套起动系统;由于超临界压力锅炉往往采用变压运行，因此在锅炉性能设计时还要兼顾超临界和亚临界各种不同运行工况时的特点，保证锅炉安全经济运行。此外，超临界压力锅炉在给水品质、自控以及防止高温部件高温腐蚀等方面，都有着更高的要求。超临界压力锅炉水冷盛与亚临界压力锅炉相比，超临界压力锅炉最大特点体现在水冷壁系统的设计方面.当代超临界压力锅炉水冷壁设计必需体现超临界、直流锅炉与变压运行的三大要素.水冷壁管圈型式、质t流速、热偏差、流量分配等都是超临界压力锅炉水冷壁设计的关键因素。水冷壁管圈型式超临界压力锅炉目前常用的管圈型式分为螺旋管圈和垂直管圈两大类型。螺旋管圈水冷壁管与水平线成一定倾角，从锅炉底部沿炉膛四周螺旋式盘绕上升，直至炉膛上部折焰角与炉膛出口处为止，通常盘绕1~2圈，螺旋倾角在100~2护之间。垂直管圈与通常的锅筒式锅炉相似，从冷灰斗至炉顶水冷壁管均作垂直布置，并且为满足变压运行需要，往往采用小管径一次上升式管圈。这两种型式在当代大容t超临界压力锅炉上都得到了广泛采用，二者在水冷壁结构设计、制造和安装等方面各有优缺点，但只要设计合理，都可以满足锅炉运行性能的要求。质t流速超临界压力锅炉水冷壁管内质量流速的合理选取十分关键，是关系到锅炉安全经济运行的重要因素.对于螺旋管圈，可以通过合理选择管径、根数和姗旋倾角等来确定合理的质量流速。
