水輪機導葉 的英文怎麼說
中文拼音 [shuǐlúnjīdǎoyè]
水輪機導葉
英文
turbine wicket gate-
Aiming at the problems in the field of the government for hydraulic turbine, this thesis applies the technology of programmable controller to the speed control of hydroelectric generators in hydropower station. a digital regulating system based on the fx2 programmable controller for the water - gate and paddle of hydraulic turbine is developed. first, the turbine regulating system is briefly introduced and the mathematics model of the system is derived
本文針對當前我國水輪機調速器領域技術現狀，將可編程式控制制器技術應用於水電廠發電機組的轉速控制，提出了在應用可編程式控制制器實現導葉控制系統的基礎上，以可編程式控制制器實現導葉、輪葉雙調整控制系統，並參與研製了以fx2可編程式控制制器為核心的水輪機雙調節控制器，樣機的實際運行良好，系統的軟硬體設計得到驗證，結果令人滿意。The pressure existing between the guide vane and the runner when the pump - turbine of east china tongbai pumped storage power station stops at different loads is analyzed, and the method for determining the best load at which the generator circuit breaker ( gcb ) switches off during operation of the pump - turbine is illuminated
摘要介紹華東桐柏抽水蓄能電站的水泵運行時，不同負荷工況下停機、導葉和轉輪間壓力的變化，闡述了華東桐柏抽水蓄能電站1號機組發電機斷路器開斷的最佳負荷值選定。Through repairing the worn parts of four hydropower stations of xinzhuang, zaoqi, suide and qiemo, and taking some comprehensive anti - abrasion measures, such as checking and repairing the runner blade, cutting the head of blade into round shape, adding an apron to the outer edge of blade and increasing a guiding plate in the head of blade, a good effectiveness has been gained so that it increases the output of generating unit and enhances the abrasion resistant capacity
通過對新莊、棗渠、綏德、且末4個水電站的磨蝕破壞部件的修復、轉輪葉片測型與修型、葉片頭部割圓角、葉片外緣加裙邊、頭部加導流板等抗磨蝕措施的綜合治理，取得較好效果，使機組出力增加、抗磨蝕能力提高。All of these is the important base of the selecting of turbines, the designing of hydrodynamics performance, and the general designing of marine currents power plant
首先分析了豎軸可調角直葉水輪機水動力性能計算的基本公式，介紹了誘導速度的兩類計算方法。This new technology changes from the traditional method by which the induced and compressor wheel separately are designed and produced to a new one by which the one - piece compressor is designed. on the basis of this new technology and the optimum blade profile, the performance of both the compressor and the turbocharger is largely improved. through the heating power calculation of the compressor, the analysis of the surge and the block of the compressor, the test - bed performance test of the turbocharger, the matching test of turbocharger and diesel engine, the propulsion test of the turbocharger on plateau condition, it is proved that the newly - designed compressor not only has high efficiency, but also improves the flow distribution in the high efficiency area so that the propulsion line can run through the high efficiency area
主要內容包括：提出一種全新的壓氣機葉輪技術和概念，這種技術將傳統的導風輪和壓氣機分開設計、單獨加工改為整體設計、整體加工的單體葉輪；從增壓器與柴油機配機計算所得出的基本參數出發，通過對壓氣機進行熱力計算，確定壓氣機的基本結構參數；再對葉型以及葉輪輪廓與葉輪罩殼的配合間隙進行優化，對新設計的壓氣機進行喘振和堵塞分析；通過增壓器平臺性能試驗，驗證了新設計的壓氣機的性能水平得到了較大的提高，達到了提高增壓器的整體性能水平的目的；通過增壓器與柴油機配機試驗、以及增壓器用於高原條件下的牽引試驗，驗證了新設計的壓氣機不但具有高效率，還改善了高效率區的流量分佈，使牽引特性線貫穿高效率區。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。Until now, there have been a few reports on the damage of the water pumps caused by sand and water cavitation. by use of the test loop for solid and liquid two phases, under the condition of 3 % head drop, the damage location and relative degree of the sand and water cavitaiton occurred on the impeller were tested and researched. the result was, them, compared with the results under the condition that water cavitation occurred and no cavitation but only wear occurred. the differencts were analyzed. the analysis result can be used as the basis of the further research and the improvement of the impeller shape
目前含沙水汽蝕對水泵損傷方面的報導甚少，本文利用固液兩相流試驗臺，對離心泵閉式葉輪在含沙水汽蝕時（ 3揚程下降點）的損傷部位和相對程度進行了試驗研究，並將此結果與清水介質發生汽蝕時的損傷情況[ 13 ]及含沙水無汽蝕情況下的磨損情況[ 7 ]相比較，對其差異進行了分析，為今後進一步探討葉輪損傷機理和葉型改進提供了實驗依據。Finally, the analysis examples were presented combined with some real data from hydroelectric set, they showed that numerical simulation of fluid - solid coupling for vibration in this paper is more available and the natural frequency of guide vane in water is lower than that of in air
運用ansys有限元軟體計算了水輪機導葉在空氣中的振動特性以及液固耦合振動的頻率和振型，並對二者進行比較，分析了影響振動的因素。通過算例表明，所採用的有限元數值模型合理，計算結果正確。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。Hence, they that flow field calculation and dynamical computation of fluid - solid coupling dynamic characteristics are carried out to search flow law in the hydraulic turbine, optimize the design of scroll casing, guide vane, blade and draft tube, and they can apply useful to the monitoring and fault diagnosis system of hydroelectric set as well
因此，為探求水輪機內部的流動規律，優化水輪機設計，為水輪機的安全穩定性運行和機組的故障診斷提供幫助。對導葉內部的流動進行流場計算和流固耦合振動特性的動力計算就顯得十分必要。In fact, the outlet flow of vane in the hydroelectric set is non - uniform flow for a variety of possible reasons. the flow is unsteady flow relative to vane and blade, and it is the main factor that affect self - excited vibration and dynamic characteristic of guide vane and hydraulic - turbine, which affect directly the power set to run safely and stably
非均勻來流相對于導葉、葉片必然是一種非定常流。這種非定常流造成導葉和轉輪葉片的激振，是產生導葉和葉片動應力，改變它們頻率的最主要因素，而導葉和葉片的動力特性直接影響水輪機的穩定性。This paper deals with a lump - sum flow analysis of a spiral case, stay ring and vaneless annular walls for a small francis turbine by the latest cfd code
本文對常用的小型混流式水輪機渦殼、座環和無導葉環壁面內流動狀況用最新的cfd技術進行了整體數值解析。Both the guide vane opening and blade opening of a hydropower generating unit can be separately regulated during disturbance according to the optimal regulation laws thus obtained to optimize the transient process of water flow
它可以使得在擾動下水輪發電機組的導葉與漿葉的位置按照各自的優化控制規律進行調整，從而使水力過渡過程達到優化。3 ) locale tests of a hydraulic turbine were made. based on the tests, the problems of its acute vibration, noise and crack were settled down
3 ）對某水輪機進行了現場測試和計算，綜合研究分析，得到該水輪機的劇烈振動、噪音及葉片開裂的原因，並提出解決問題的指導意見。分享友人