水轮机

The clarification basin is built in upstream nosing pivot in order to relieve alluvium abrasion to turbine.

为减轻泥沙对水轮机的磨损，在首部枢钮设有沉沙池。

The CFD method was applied to calculate and simulate the form and action process of the cavitation at the representative character of the cavitation erosion on the surface of the hydraulic turbines.Some argumentation was presented that micro jet impacted the wall with a certain degree when bubble collapsed with the result that the maximal strain of the wall annularly distributed the local of the boundary touching the micro jet.Cavitation was gradual to develop regionally at the mode of chain reaction and di...

针对水轮机叶片表面气蚀的典型特征，利用CFD方法进行仿真计算，模拟气蚀形成和作用过程；根据模拟计算结果提出了新观点：空泡溃灭发生微射流以一定的倾角冲击壁面，壁面材料产生的最大应变在流束边界局部区域，呈环状分布；空泡气蚀在局部区域是渐进的，以"连锁反应"形式扩展，具有一定过流环境的分布特征；典型的冲蚀缺陷形貌是空泡气蚀在不同阶段的产物。

ABSTRACT This paper presents results of online identification of hydrogenerators, a long-term running robust self-tuning regulator of generator excitation, governor power system stabilizer decoupled in multimachine systems, and an adaptive GPSS designed in frequency domain. 1. It presents a step-by-step zero cancellation method , accuracy weighted recursive least squares and approximate RLS algorithms, inferior limit of sampling time.

针对发电机励磁和调速系统建模与控制，针对多机电力系统的稳定性，本文综述了自适应控制理论及其在电力系统中应用的现状和发展方向后，在辨识、自适应控制结构和鲁棒性提高的措施上进行了研究，取得了水轮机调速系统现场辨识的成功，获得了长期稳定运行的鲁棒励磁自校正控制器、多机解耦的调速侧电力系统稳定器和频域设计的自适应GPSS。

Hydraulic turbines ; silt-laden water flow ; two phase flow ; Bernoulli equation ; operating parameter

水轮机；含沙水流；二相流动；伯努利方程；工作参数

Based on the principle of COONS surface, a new method for processing the characteristic curve of the hydraulic turbine is proposed.

本文以C00NS曲面理论为基础，提出了处理水轮机特性曲线的一种新方法。

As Hydro turbine blade is a very complex body closed by sculptured surfaces and the operating condition of the runner is also very complicated, traditional research way was combined the simplified theoretical analysis and model test.

由于水轮机转轮叶片是非常复杂的雕塑曲面体，转轮的工作条件也非常复杂，传统的研究方法是采用简化理论分析研究与模型试验相结合。

Based on the simulation platform, the dynamic characteristics of the support and water cone are analyzed.

基于该仿真平台，对水轮机支持盖及导水锥体的动力学特性进行了分析。

As the conversion device, turbine is the key component of tidal current energy technologies. Ongoing research is focused on its structure, power mechanisms, and performance optimization.

潮流水轮机作为获取海洋潮流能的能量转换装置，是潮流能开发利用的关键，其结构原理、动力机制以及性能优化是研究的重点和难点。

The output of the oil circuit of the pilot valve bank is connected respectively to six synchronous diffluence motors and six corresponding oil distributing modules.

本发明公开了一种水轮机筒阀电液同步控制系统，系统由控制阀组、分流马达和配油模块三部分组成，控制阀组油路的输出分别接于六个同步分流马达及相应的六个配油模块。

In the technology of the mobile air conditioning room,the heat barrier is used to isolate work- ers from the hot environment and the cooling air is supplied for the mobile air-conditioning room by the turbine- typed air cooler whose cooling source and ventilating power come from cooling energy and potential energy stored in the water in constant temperature zone.

矿井移动空调室技术的实质是利用热幛将作业者与环境隔离，再用一种水轮机式空气冷却器向移动空调室内供冷。水轮机式空气冷却器的冷源和通风动力均来自矿井恒温带。通过实验得知：环境温度为32℃时，以1.6 m~3/h的速度供给水温为18℃的冷水启动空气冷却器10 min后，矿井移动空调室内干球温度可降至24℃；空气冷却器停止工作后30 min，矿井移动空调室内的空气温度仍可维持在28℃以下

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。