水輪機葉片 的英文怎麼說
中文拼音 [shuǐlúnjīyèpiān]
水輪機葉片
英文
water turbine blade-
Because of the technical complexity of the turbine for the three gorges project and on the basis of several important technical problems which have been defined in the international bidding documents for 14 generating units in the left bank power station, the owner of the project has decided another some important technical problems based on appraisal and comparison in the bid appraisal stage after the bidding documents are analyzed and the tender documents are cleared by the tenderers
由於三峽工程水輪機技術上的復雜性和挑戰性，在左岸電站14臺機組國際招標文件已明確了若干重大技術問題的基礎上，在機組議評標階段，對招標文件進行分析和投標商對投標文件進行澄清說明后，經評議比選，業主又決策了幾個重大技術問題，主要有：水輪機設計水頭的確定，負傾角葉片水輪機的應用，兩套水力設計，舍棄初期轉輪，蝸殼進行水壓試驗等。Establishing of simulation environment for multi - axis machining of hydro turbine blades
水輪機葉片多軸數控加工的模擬環境構建The repair and maintenance work of the turbine blades is the international problem for all the hydro power plant. a lot of manpower and resources is costed every year, especially in china, because the rivers contain plentiful sand, the problem is more serious
水輪機轉輪葉片的維修與維護一直是各國水電部門的一項重要工作，每年都要對其耗費巨大的人力、物力、財力，尤其是我國河流泥沙含量大，此項工作就更為艱巨。The transient cfd simulation including the spiral case, stay vane, guide vane, runner vane and draft tube at different operation points is studied fitly, then the result of the pressure distribution on runner blade is provided for the runner transient structural simulation by fluid - structure interaction ( fsi ) method
文中首先對高水頭小負荷的渦帶工況下混流式水輪機內流場進行非定常cfd計算，得到渦帶工況下葉片表面不同時刻的水壓力載荷，並利用流固耦合方法對轉輪進行結構場瞬態特性計算，分析轉輪葉片的動應力特性。At present, the means for repairing hydraulic turbine blades in our country are still manual weld and manual polish. the working condition is bad and labour intensity great for workers and overhaul efficiency low and inferior
目前，國內水輪機轉輪葉片修復仍採用手工補焊、人工打磨等檢修手段，工人勞動環境惡劣，勞動強度大，且檢修效率低，質量差。Stainless steel blade castings for axial - flow hydraulic turbines
軸流式水輪機不銹鋼葉片鑄件The result indicates that the maximum stress on the runner is mainly in proportion to the turbine output
結果表明在大部分工況下該轉輪葉片最大靜應力基本上與水輪機功率成線性關系。The result indicates that the dynamic stress caused by hydraulic pulse at partial load is one of the important reason of the fatigue and cracks of the runner
結果表明由於水壓力脈動引起的轉輪葉片上的振動交變動應力是混流式水輪機疲勞破壞的主要原因之一。The repair and preservation work of the turbine blades is the international problem for all the hydro power plant
對水輪機轉輪葉片的維護與維修是各國水電部門的一項重要工作，每年都要在其上耗費大量的人力、物力、財力。A measurement method applied to detect the dfects of the turbine blades
水輪機轉輪葉片表面缺陷的檢測方法Numerical realization of francis turbine blade design and wooden patterns
混流式水輪機葉片設計與木模圖的數值實現Cracking reasons of the turbine runner are extensive. the fact shows that the leading reason induced cracking is exorbitant stress
水輪機葉片開裂的原因是多方面的，實踐表明:應力過高是導致轉輪葉片開裂最為主要的原因。The consequence of computation indicated above method not only can approach turbine blade surface accurately but also can be provided for extend and intersection while the precision can be controlled. it realized anticipated goals of the application of turbine blade and engineering exercises. thus, it provide the foundation to the reconstruct and optimize design of turbine blade as well as the cam of turbine blade
算例結果表明，上述方法不僅可精確擬合混流式、軸流式水輪機轉輪葉片，而且還能對葉片進行求交、延展運算並控制精度，實現了nurbs曲面造型技術應用於水輪機葉片設計和工程實際的預期目標，為水輪機葉片的改型設計和優化設計、水輪機葉片的計算機輔助製造打下了基礎。This thesis discusses the problem free - surface modeling technique of turbine blade according to the property of the runner blade and the present research achievement in free - surface modeling technique, the major study concerned are introduced below : firstly, it accomplished the study of intersection for blade - to - plane and present the method of three - step algorithms such as subdivision > iterative refinements approach ; meanwhile it solved the problem of small area extend of blade by use minimal modulus method
本文針對水輪機葉片的特點，結合曲面造型技術的研究現狀，研究了水輪機葉片的nurbs曲線曲面造型問題。主要工作有：第一，完成了葉片與任意平面求交問題的研究，提出分割-迭代-擬合三步求交演算法。同時首次應用最小二乘擬合端部法解決了葉片的小區域延展問題。Secondly, it realized the whole structure of francis turbine blade surface. thirdly, it accomplished the computation of blade incidence
第三，針對水輪機葉片的特點，完成了各圓柱面葉柵進口安放角的求解演算法。With the increasing of capacity of hydrodynamic motor generator, water turbine ' s blade run in villainous environment. it is n ' t advantageous to the safety of the blade
隨著水輪發電機組容量的不斷增大，水輪機葉片處于更為惡劣的環境中運行，這對葉片的安全十分不利。Therefrom, the finite element movement equations of moving characteristics of blade is derived and the finite element movement equations of vibration characteristic is gained
由此，推導出空間八結點非協調單元描述水輪機葉片運動特性的葉片運動有限元方程，進一步得出了葉片振動特性的有限元方程。In order to lessen labor intensity and increase the welding and grinding precision and efficiency of the robot, introducing and exploring a repair robot used for welding and grinding on the turbine blades is very useful for those plants
為了減少人工修復的勞動強度，提高維護、維修的質量和效率，我們引進並自行開發了適合於我國國情的水輪機葉片修復專用機器人。The numerical simulation computations of the three dimensional viscosity fluids are done to research the turbomachinery properties, which includes the determination of the computation equation, the finite mesh and the determination of boundary conditions
進行了水輪機葉片切割前後轉輪內部三維粘性流的數值模擬計算，其中包括方程的確立、方程的變換和離散、邊界條件的確定。To this problem, on the basis of the work property and characteristics of the water turbine ' s blade. the finite element mechanics model of blade vibration characteristic is described with the eight - node three - dimensional nonconforming and all parts of blade damp are analysised, the calculating model of blade damp is built, the tackling method of blade damp in calculating of dynamic stress is presented
本文根據水輪機葉片的特點和工作性質，採用空間八結點非協調等參單元描述水輪機葉片運動特性的有限元力學模型，詳細分析了水輪機葉片阻尼各組成部分，並建立了葉片阻尼的計算模型，提出了葉片阻尼在動應力計算中的處理方法。分享友人