空冷汽轮机低压末级系列长叶片的研制

系统地介绍了哈尔滨汽轮机厂有限责任公司空冷机组专用的末级叶片系列的设计要点,该设计针对空冷末级叶片的工作特点,有效地把末级叶片的安全性和经济性结合起来,保证了空冷机组的安全高效运行。     

200MW空冷机组末级叶片性能研究

介绍了国产２００ＭＷ空冷机组末级叶片７１０ｍｍ设计情况，重点阐述了空冷机组末级叶片的热力、气动及结构设计特点，以及影响汽轮机末级叶片运行经济性、安全性的主要因素，尤其在小流量，高背压情况下，并提出适应叶片安全经济运行的末级运行保护曲线，认为这旨集设计合理性及正确性一一全将是保证汽轮机叶片具有高安全性经济运行的有力手段之一。     

空冷汽轮机低压排汽面积选择和变工况特性分析

根据我国西北某地区的典型环境温度对600MW直接空冷机组的低压末叶片进行优化,得到合理的低压排汽面积,同时根据末级叶片的设计特点对其变工况特性进行分析,从而对620mm末叶片的变工况性能有一定了解。分析结果表明,设计背压为15kPa.a时,末叶片采用620mm比较合适;采用专用强化叶型、控制反动度、控制攻角等方法的620mm末叶片可以有效保证空冷机组变工况安全高效运行。     

空冷汽轮机设计综述

本文阐明了空冷与湿冷的原始差别，并从方案层次上指出了空冷方案的六大特点，进而从机组容量匹配、设计背压及末级叶片最佳高度确定、主机结构及末叶设计、末端安全运行等四方面重点综述了空冷汽轮机的设计条件与设计特点，本文力图从宏观上把空冷方案、空冷汽轮机与湿冷严格区分开来，从而达到准确而有重点地掌握空冷汽轮机设计要领的目的。     

空冷汽轮机末级680mm叶片的开发

空冷汽轮机组在电力市场上所占的份额越来越大,哈尔滨汽轮机厂有限责任公司对空冷汽轮机组进行了冷端优化,设计背压由15kPa降为11kPa。为提高机组效率,需要设计一个比原有空冷末级620mm叶片排汽面积更大、余速损失更小的空冷末级叶片。     

大型空冷汽轮机通流设计

采用CFD技术对某大型空冷汽轮机通流进行全三维变工况设计,掌握了空冷机组通流的三维流动特点,采用了包含汽封的叶片整体优化全三维设计,新型反动式大焓降叶片等新技术。并设计了专用于空冷机组的末级长叶片及相应低压排汽装置,有效保证了空冷机组安全高效运行。     

大功率空冷机组末三级动叶片的设计及其频率试验

介绍了大功率空冷机组末三级动叶片的设计及其动静频试验情况。通过计算和试验的对比分析,改进了次次末级动叶片的初始设计状态并确定了末三级动叶片围带的最终尺寸。试验表明,大功率空冷机组低压末三级动叶的设计是成功的,叶片能满足空冷机组的长期安全运行要求。     

空冷机组末级叶片的初步研究与分析

末级叶片的研究是研制开发空冷机组的关键。从热力、气动、强度振动等几个方面对末级叶片的工作特性、设计要点等方面进行论述，对于末级叶片的设计开发有一定的指导意义。     

空冷汽轮机末级长叶片设计特点

简要介绍空冷汽轮机运行的工况特点和末级叶片的设计特点,通过对空冷末级叶片的结构力学设计特性和气动设计特性的定性分析,总结了叶片的大刚度大阻尼结构设计、成圈结构调频设计、优化排汽环形面积设计(最佳叶高)、优良的叶形通道设计、优良的变工况性能设计,以及小容积流量下叶片的动应力和颤振特性等设计原则。     

三缸两排汽200MW间接空冷汽轮机通流部分改造

改进型200MW汽轮机及大型空冷汽轮机的不断投产,为200MW间接空冷汽轮机改造提供了技术储备。末级叶片的优化设计是发展空冷机组重要条件之一,正是由于选择了合适的末级叶片,对丰镇电厂的机组改造取得了成功。     

Optimum design parameters of Pin-Fin heat sink using the grey-fuzzy logic based on the orthogonal arrays

The effects of design parameters and the optimum design parameters for a Pin-Fin heat sink (PFHS) with the multiple thermal performance characteristics have been investigated by using the grey-fuzzy logic based on the orthogonal arrays. Various design parameters, such as height and diameter of pin-fin and width of pitch between fins are explored by experiment. The average convective heat transfer coefficient, thermal resistance and pressure drop are considered as the multiple thermal performance characteristics. Through the grey-fuzzy logic analysis, the optimization of complicated multiple performance characteristics can be converted into the optimization of a single grey-fuzzy reasoning grade. In addition, the analysis of variance (ANOVA) is applied to find the effect of each design parameter on the each or all thermal performance characteristics. Then the results of confirmation test with the optimal level constitution of design parameters have obviously shown that this logic approach can effective in optimizing the PFHS with the multiple thermal performance characteristics.     

气体发动机燃料特性参数计算软件开发及应用

不同气体燃料物理、化学性质不同,直接关系到气体发动机的结构设计及各项性能指标;对各种气体燃料特性进行分析及评价是气体发动机设计首先要解决的问题。开发了气体燃料特性参数计算软件,对各种气体燃料的物理、化学特性进行了分析、计算,并就这些参数对气体机性能的影响进行了分析,供气体发动机设计做参考。     

Explicit Design of Balanced Regenerators

An explicit procedure for the design and sizing of balanced regenerators has been developed. A set of performance curves relating the thermal ratio, harmonic mean reduced length and period, and minimum cold fluid outlet temperature is presented. The specific characteristics of the regenerator's matrix including the heat transfer and pressure drop correlations are used to develop interrelations, represented by a set of three design curves, between these quantitites and the operating characteristics of the regenerator. The performance and design curves are used in the design procedure to determine the dimensions of the regenerator for the specified operating conditions.     

Analysis of the design of a pressurized SOFC hybrid system using a fixed gas turbine design

Design characteristics and performance of a pressurized solid oxide fuel cell (SOFC) hybrid system using a fixed gas turbine (GT) design are analyzed. The gas turbine is assumed to exist prior to the hybrid system design and all the other components such as the SOFC module and auxiliary parts are assumed to be newly designed for the hybrid system. The off-design operation of the GT is modeled by the performance characteristics of the compressor and the turbine. In the SOFC module, internal reforming with anode gas recirculation is adopted. Variations of both the hybrid system performance and operating condition of the gas turbine with the design temperature of the SOFC were investigated. Special focus is directed on the shift of the gas turbine operating points from the original points. It is found that pressure loss at the fuel cell module and other components, located between the compressor and the turbine, shifts the operating point. This results in a decrease of the turbine inlet temperature at each compressor operating condition relative to the original temperature for the GT only system. Thus, it is difficult to obtain the original GT power. Two cell voltage cases and various degrees of temperature difference at the cell are considered and their influences on the system design characteristics and performance are comparatively analyzed.     

贫燃催化燃烧燃气轮机压气机的设计及其性能分析

分析了贫燃催化燃烧燃气轮机系统中压气机的结构特点,设计了低出口宽径比、高比转速的压气机叶轮,并采用数值计算和试验2种方法预测了其工作性能.结果表明:数值计算与试验结果基本吻合,该压气机在全工况下达到设计要求,且2种结果的高压比区域、高效率区域均远离喘振线;低宽径比、高比转速压气机的设计点在高效区;随着转速的提高,此压气机的压比特性曲线在小流量区增长的趋势明显;采用低宽径比、高比转速设计的负面作用是增大了叶尖相对马赫数.     

106t/h循环流化床锅炉的设计简述

介绍了我公司为土耳其某碱矿设计和制造的2×106 t/h循环流化床锅炉的设计方案、运行性能、设计特点。     

Overall design optimization of dedicated outboard airfoils for horizontal axis wind turbine blades

Designing the primary airfoils for the outboard part of wind turbine blades is a complicated problem of balancing structural, aerodynamic, and acoustic requirements. This paper presents an optimization method for the overall performance of outboard wind turbine airfoils. Based on the complex flow characteristics of the rotor blades and the varying requirements along the span of a blade, the design principles of outboard airfoils were investigated. The requirements for improving the structural performance and reducing the aerodynamic noise were combined with the following aerodynamic design considerations: high efficiency, low extreme loads, stability, and a wide operating region. Thus, this paper proposes a new mathematical model for overall airfoil optimization using the airfoil performance evaluation indicators. Then, an integrated optimization design platform is established for outboard airfoils. Through 2 design cases, new airfoils with desirable aerodynamic characteristics and improved overall performance were obtained. Comparisons between the new airfoils and reference airfoils based on numerical predictions indicate that the proposed method with the newly established mathematical model can effectively balance the complex requirements of the airfoil and improve its overall performance. More notably, the design cases also indicate that the established optimization design method can be used to address special designs of outboard airfoils for different blade requirements.     

SL4108ZL柴油机活塞结构设计

分析了活塞的工作条件和设计要求,介绍SL4108ZL柴油机活塞的结构特点,结构设计的理论依据和计算方法。通过性能试验证明活塞的设计较为理想,能满足低排放增压柴油机的性能要求。     

具有空气冷却的简单循环燃气轮机热力学建模和性能优化:(I)建模

研究了考虑空气冷却和实际气体性质的简单循环三轴燃气轮机热力学性能,给出了循环功率和效率的计算流程,并利用UGT25000型工业燃气轮机的设计性能数据对模型进行了验证计算。结果表明,所建模型是准确的,能有效地反映燃气轮机循环的设计性能。     

国产首台660MW等级褐煤亚临界锅炉的设计

本文介绍了660MW等级褐煤锅炉的设计方案、预期运行性能和设计特点。该锅炉是依靠自主研制开发的首台660MW等级亚临界产品。