查询词典 axial flow

In general, the design work with traditional measures is done by hand, which cannot meet the needs of the technology and manufacture. So the author has developed a CAD hydraulic design software fit for lower specific speed axial flow runner, which is easily operated by users.The main research work of this paper is as follows:1 Analyzing the main reason of axial flow power station cannot work well under littler volume of flow in some season and putting forward an improving scheme, pointing out the characters of design under abnormal factors.2 Combined with the development of the industry in our country, the abnormal hydraulic design method of propeller turbine is discussed based on present literature, data and experiment results.3 Guided by the design method of software engineering, a suit of hydraulic design software of Lower Specific Speed Axial Flow Runner is programmed by the object-oriented programming language Visual Basic and a straightforward, concise and standard Windows human-computer dialogue interface is designed for the system, which makes the operation of the system very convenient.4 ActiveX Automation technology is adopted as the interface with AutoCAD and the hydraulic drawings are edited, modified by AutoCAD until hydraulic model drawings according with the demand of engineering practice are output.5 To resolve practice problem, the author has designed a lower specific speed axial flow runner for Duowa Power Station through an example.

论文的主要内容有：1 深入分析很多轴流定桨式水电站枯水季节小流量下不能发电的主要原因，提出减容改造方案，并指出超常规条件下的改造设计特点。2 结合国情及行业发展需要，参考现有资料、文献和前人的研究成果，进行低比转速轴流式转轮叶片水力设计方法的研究，对轴流式转轮叶片的奇点分布法水力设计进行了全面的探索，结合现代计算机技术，找到了一种针对特殊条件的轴流式转轮叶片水力设计方法。3 仔细比较多种AutoCAD二次开发工具后，结合本课题的特点，选用Visual Basic语言，综合应用软件工程的设计思想，进行低比转速轴流式转轮叶片水力设计软件的编制，为系统设计了直观、简洁和标准的Windows人机对话界面，便于用户操作；编程时在考虑到设计条件特殊性的同时，尽量做到程序的通用性，使之可用于解决同一类问题；另外，大部分程序还可移植到普通轴流式转轮叶片水力设计中，具有良好的适应性。4 利用ActiveX Automation技术与AutoCAD接口，对AutoCAD进行二次开发，在AutoCAD下实现水力图的自动生成和编辑，直至输出符合实际工程要求的木模图。5 通过算例，为多哇水电站设计了一个低比转速轴流定桨式转轮，解决其在枯水期小流量下不能发电的问题。

Patent, and then the blade-to-blade flow was computed by solving the two-dimensional steady Navier-Stokes equations, finally, overall performance and internal flowfield characterization were obtained and analyzed.2. As to radial matching between blade sections, preliminary investigations were developed from three aspects such as stall margin customizing technique, control technology of tip clearance flow, prediction model and control technology of corner separate.a On basis of reviewing on methods of achieving the goal of stall margin in design process of fan and axial-flow compressor, in conjunction of understandings on "Sweep/Dihedral", stall margin customizing technique was put forward; two-dimensional performance prediction method for stall margin customizing was developed, it can consider influences of radial stacking patterns of blade sections and axial distances between blade rows conveniently and rapidly.b A simple model for tip leakage mixing loss of unshrouded blades for compressible flow was presented.

二、叶片基元展向匹配方面，本研究从影响负荷最大化的叶身展向积迭注：原(来源：ABC论文35网www.abclunwen.com指掠弯是裕度定制的一部分，为方便论述，本文将此统一论述为裕度定制、叶尖间隙、叶片与端壁角区这三个最重要因素出发，探讨了各因素影响负荷最大化的机理，并由此给出了最大负荷设计过程中的技术措施和努力方向。1从掌控风扇/轴流压气机裕度方法回顾入手，探析了美国和俄罗斯裕度控制方法及相应特点，结合对&掠/弯&因素的认识提出了裕度定制技术：并开发了能够体现裕度定制思想的二维特性预估方法，可在二维层面下方便快捷地考虑以掠/弯为代表的叶片基元展向积迭以及叶片排间轴向间距带来的影响；2借鉴Denton关于不可压叶尖泄漏损失的理论分析，推导出适用于可压缩流动的叶尖泄漏掺混损失计算的基本关系式。

ABSTRACT On the basis of the early study of axial flow vaneless nozzle , an axial double-flow vaneless nozzle with rotati...

在轴流无叶喷嘴研究的基础上，本文提出了一种做为大功率汽轮机低压缸进口第一级的新型轴流无叶喷嘴-双出口、内环旋转式。

ABSTRACT On the basis of the early study of axial flow vaneless nozzle , an axial double-flow vaneless nozzle with rotating inner ring is developed for the first stage of the double-flow turbines.

在轴流无叶喷嘴研究的基础上，本文提出了一种做为大功率汽轮机低压缸进口第一级的新型轴流无叶喷嘴-双出口、内环旋转式。

T35-11 Axial Flow- Blast Fan is a new generation product which was designed out after analyzing and comparing to the similar products abroad as well as experimenting and with model. This T35-11 Axial Flow-Blast Fan is remarkable of its high efficiency and low noise, and can be used in Industrial and Mining Enterprises, storehouses, offices and civil buildings for ventilating or facilitating heating system. The axial fan can be used as a fan when removing its housing and also can be installed in series connection inside the long exhaust pipeline to enhance wind pressure.

T35-11轴流式通风机是对国外同类产品进行分析对比，通过模型试验研究后设计的新一代轴流式通风机，具有效率高、噪声低的显著特点，可用作一般工矿企业、仓库、办公室、民用建筑内通风换气或加强暖气散热之用，若将机壳去掉，则可作自由风扇用，也可在较长的排气管道内隔串联安装以提高管道中的风压。

Reversible high temperature axial flow fan in subway station project, reversible axial flow fan in airshaft tunnel are placed in the fan room in terminals of the station or along the tunnel for ventilation of stations and tunnel.

地铁工程车站可逆转高温轴流风机，区间风井隧道可逆转轴流风机，一般设于车站两端或区间通风机房内，用于车站、区间隧道通风。

Anti-Corrosion Products of explosion-proof fans have: DWT-I FRP axial fan roof; DWT-II glass-steel roof centrifugal blower; BF4-72 C-type glass fiber reinforced plastic centrifugal fan; FBT35 FRP axial flow fan; FT30 C-type FRP axial flow fan; FRP DT Multi-wing Low Noise Centrifugal Fan; advertisement FRP fan; PVC4-62 PVC centrifugal fan; PP4-62 polypropylene plastic centrifugal fan; 4-72 stainless steel centrifugal fan; 11-62 stainless steel centrifugal fan.

防腐蚀防爆风机的产品有： DWT-I 玻璃钢轴流屋顶风机； DWT-II 玻璃钢离心屋顶风机； BF4-72 C 式玻璃钢离心风机； FBT35 玻璃钢轴流风机； FT30 C 式玻璃钢轴流风机；玻璃钢 DT多翼式低噪音离心风机；玻璃钢广告风机； PVC4-62 聚氯乙烯塑料离心风机； PP4-62 聚丙烯塑料离心风机； 4-72 不锈钢离心风机； 11-62 不锈钢离心风机。

The problem of noise of the fan is studied with the non-linear theory, and pressure pulsation of axial flow fan's inside flow was measured by dynamic pressure sensor, the gas-structure coupled noise of contra-rotating axial flow fan was studied through a

摘要用非线性动力学的理论对风机噪声问题进行了分析，同时运用实验手段测量了轴流风机流场内部流动的压力脉动，从全新的角度研究了对旋风机的气固耦合噪声。

This paper applies approximate equation to describe the characteristic curve of an axial flow fan, for the purpose of determining its working system,and is intended to apply the equation method for enlarging the extent of the analy-tical method, commonly used for determining the working system of axial flow fan and the ventilating syetem of a mine.

本文应用近似方程来描叙轴流式扇风机的特性曲线，其目的要确定矿井轴流式扇风机的工作制度，并且企图使扇风机工作制度与矿井通风制度上应用方程法来扩大分析法的范围。

If the axial flow pump are used for diesel or gasoline engine power, and can change the size of variable-speed throttle; if the axial flow pump with the power machine is linked to the use of triangular belt or flat belt drives the overhead, you can change to variable speed drive pulley diameter, the replacement of driving wheel or the driven wheel can be, the purpose is to change the transmission ratio.

如果轴流泵是采用柴油机或汽油机作动力的，可改变油门大小来变速；如果轴流泵与动力机相联是采用三角皮带或平皮带间接传动装置的，则可以改变传动皮带轮直径来变速，更换主动轮或从动轮都可以，目的是改变传动速比。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。