查询词典 turbine-driven

As the complete characteristic curves of reversible pump turbine are often used to calculate the instantaneous parameters, this paper studies the characteristic curve and the wicket closure and opening law in pumped storage plants.Chapter 1 presents the importance and the necessity of this study and reviews the previous related research on hydraulic transient process and valve regulation in pumped storage plants.Chapter 2 analyzes the six collected characteristic curves of reversible pumped turbine and studies their diversification from the point of view of specific speed. The six collected discharge and moment curves with maximum efficiency have been fitted to piecewise continuous curves. This curve-fitting procedure is listed.Chapter 3 takes Liyang Pumped storage plant as an example and analyzes the effect of different characteristic curves on regulation guarantee parameters and the variety of its trochoid during the same operation status.Chapter 4 takes three pumped storage plants with different heads as examples and studies the characteristic of coordinated closure with wicket gate and ball valve and its effect on dynamic pressure in the spiral case, inlet pressure in the draft tube and the rise of rotating speed.Chapter 5 summarizes this paper and point out what should be done in the future research.

由于在过渡过程分析计算中，需要频繁利用可逆式机组的全特性曲线推求机组的瞬时参数，所以本文就特性曲线及关闭规律问题进行了研究，其主要内容如下：第1章，指出本文研究的意义和目的，回顾前人对水力过渡过程、抽水蓄能电站及阀调节的研究成果，在此基础上提出本文的研究内容；第2章，针对收集到的六套特性曲线，从比转速的角度出发来研究可逆式机组特性曲线的变化规律；并对六套曲线的最高效率流量和力矩曲线进行分段拟合，得到各分段函数的具体形式，再通过举例说明最高效率曲线的拟合步骤；第3章，以溧阳抽水蓄能电站为实例，分析讨论不同比转速特性曲线对调保参数造成的影响及对于相同工况其轨迹线的变化；第4章，结合高、中、低三水头段抽水蓄能电站，在导叶直线关闭的基础上，研究导叶与球阀协联关闭规律的特点及对蜗壳动水压力、尾水管进口压力及转速上升造成的影响；第5章，总结全文，提出今后研究的重点和方向。

Wind turbine is a complicated non-linear system. The effective and reliable control technology is crucial to the safe operation of wind turbine generator.

风力发电机组是复杂的非线性系统，有效和可靠的控制技术是风电机组安全运行的关键。

In recent years, dasso has successfully patented some new products in the field of bamboo technology including indoor and outdoor bamboo decorative material and wind turbine blade. in 2004, dasso's two-ply bamboo flooring was awarded china national star promotion project; in 2005, fire-proof ceiling board developed by dasso, was used in the madrid international airport and this project was honored with riba award; in 2006, dasso's bamboo decorative material was used for the dashboard of bmw vehicles. there are more than 100,000 bmw x5 and x6 model which are fitted with this high quality material all over the world; towards the end of 2008, the 1st set of wind turbine bamboo blades which dasso supplied the high strength bamboo material was installed in northern china; in march of 2009, dasso began to introduce its outdoor strand woven bamboo into the market and this was used in projects such as the shanghai world expo 2010 as riverfront decking.

大庄近年来在竹子科技领域有多项发明专利应用于新的产品，这些新产品包括竹材室内外装饰材料以及环保风能竹材料。2004年，大庄的两层竹地板被国家授予星火计划推广项目；2005年，大庄研发的防火竹制天花板被应用于西班牙马德里国际机场，该项目并荣获英国皇家斯特灵奖；2006年，大庄将竹材推进到宝马汽车内饰，现有超过十万辆bmw x5、x6奔驰在世界各地；2007年，大庄的一项竹装饰板荣获国家科技发明奖；2008年底，由大庄提供的竹制风能叶片材料的世界第一个竹制风能叶片系统在中国北方张北投入使用开始发电。2009年3月，大庄研发的竹户外材料开始投放市场，并被应用到上海世博会的诸多项目之中。

According to thermodynamic basic theory, the expression of the gas turbine circulation thermal efficiency to coupling parameter on the premise of considering actual influence factor and the matrix form of steam turbine thermal efficiency with the unfired HRSG is strictly deduced through mathematics method .

根据热力学的基本理论，通过严格的数学推导，分别推导出考虑实际影响因素的燃气轮机实际循环热效率关于耦合参数的关系式，非补燃式余热锅炉型蒸汽轮机热效率的矩阵形式的关系式，最后得出了燃气-蒸汽联合循环热效率关于耦合参数的关系式。

Energy is related to extent of water-power utilization; cavitation is related to service life of turbine; the stability not only has great effect to turbine life, but also is directly related to the normal operation of power station.

其中，效率特性关系到水能的利用程度，空蚀和空化特性关系到机组的使用寿命，而稳定性则不仅关系到机组的使用寿命而且关系到机组乃至整个电站能否正常运行。

To analyze the aerodynamics performance of a wind turbine blade, the viscous fluid 2-D calculating model is used. The characteristics of a wind turbine, a fluid pump, and a throttle are analyzed.

并在实验与数值计算的基础上，分析了风力机，流体升压泵，节流器的特性，还对联机构成风力致热系统时的性能匹配与变工况特性进行了分析研究。

Therefore, systematic study on the large scale wind turbine gearbox can help reduce the failure rate of the gearbox, improve the performance and reliability of wind turbine.

对大型风电齿轮箱进行系统的研究，降低风电机组中齿轮箱的故障率，提高风电机组的性能和可靠性对推动我国风电产业的发展有重要意义。

Through the computer simulation, the dynamic characteristics of gas turbine, HRSG and steam turbine under the disturbances of the load and inlet working substance parameters of HRSG were studied, and after studying the parameters and the control rule of HRSG water level control system, the parameters of the control system were predicted, and at last characteristics of the system with water level control were analyzed.

通过计算机仿真，研究了燃气轮机、余热锅炉和汽轮机在负载和余热锅炉进口工质参数扰动下的动态特性；对余热锅炉水位控制系统的参数和控制规律进行了研究，确定了控制系统的参数，并分析了系统在加入水位控制后的动态响应特性。

An approach method is applied to calculate efficiency of impulse turbine even in low reaction degree conditions' The effect of working substance which contains solid praticles on the turbine efficiency is also investigated.

给出了具有小反力度冲击式涡轮效率的计算方法和火药燃气中含有微粒流时冲击式涡轮效率的选代计算方法。

Cavitations in foreign hydraulic turbines appear in clear water condition, so its destructive extent is not far more serious than in Yellow River hi our country. Stronger stiffness and more agility are required for Special-purpose robot for hydraulic turbine repair used in our country. Foreign robot for hydraulic turbine repair could not satisfy our working require, so we develop special-purpose robot system that is used to polish and weld repair cavitate flow path surfaces of hydraulic turbines on all location.

国外水电站的水轮机汽蚀是在清水条件下产生的，其破坏程度远不及我国黄河等水域严重，用于我国水轮机修复工作的专用机器人，要求有更强的刚度和更大的灵活性，国外水轮机修复机器人满足不了我国水轮机修复工作的要求，因此我们开发了用于在机坑内对水轮机空蚀磨损破坏表面进行修复的&水轮机修复专用机器人&。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。