draft tube 汲管。
汲管。 “draft“ 中文翻譯： n. 1.選拔隊，別動隊，分遣隊；(分遣隊的)選拔；〔美 ...“tube“ 中文翻譯： n. 1.管，筒；顏料管。 2.管狀地下隧道；〔口語〕( ...“tube， draft“ 中文翻譯： 尾水管“axis length of draft tube“ 中文翻譯： 尾水管中心線長度“bend draft tube“ 中文翻譯： 彎尾水管“bent draft tube“ 中文翻譯： 彎曲尾水管“conical draft tube“ 中文翻譯： 錐形尾水管“conical type draft tube“ 中文翻譯： 錐型尾木管“draft cone tube“ 中文翻譯： 尾水錐管“draft elbow tube“ 中文翻譯： 尾水肘管“draft tube axis“ 中文翻譯： 尾水管中心線“draft tube cone“ 中文翻譯： 尾水錐管“draft tube elbow“ 中文翻譯： 尾水肘管“draft tube gate“ 中文翻譯： 尾水門“draft tube gate chamber“ 中文翻譯： 尾水管閘門室; 尾閘室“draft tube gate slot“ 中文翻譯： 引流管門縫“draft tube man door“ 中文翻譯： 尾水管進人門“draft tube protecting ring“ 中文翻譯： 尾水管保護環“draft tube support vane“ 中文翻譯： 汲取管支承板“draft tube tunnel“ 中文翻譯： 尾水管洞“draft-tube-baffled crystallizer“ 中文翻譯： 導流筒擋板結晶器; 套筒隔板式結晶器“dtl draft tube linac“ 中文翻譯： 漂移管直線加速器“elbow draft tube“ 中文翻譯： 彎尾水管; 肘形尾水管“hydraucone draft tube“ 中文翻譯： 水力錐式尾水管“road draft tube“ 中文翻譯： 行車氣流吸收管
draft-age |
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In this paper according to the design scheme of yao heba power station in nan yahe river , the mathematical model with longer and complicated conduit system , elastic water hammer and pid regulating low of voter turbine adjusting system in the case of the small fluctuation has being built , which include conduit system , surge tank , draft tube , water turbine , generator and governor . the hydraulic losses are taken into account , and nonlinearization in water turbine and the governor is also taken into account 本文根據南椏河姚河壩水電站的設計方案，對水輪機調節系統，按長引水管道復雜引水系統、彈性水擊、調速器為pid調節規律，在小波動情況下，對包括引水道、調壓井、尾水管、水輪機、發電機、調速器在內的水輪機調節系統建立數學模型，并計及引水管道水力摩阻損失，對水輪機、調速器考慮了其中的非線性，利用功能強大的matlab軟件編制了源程序進行計算機仿真計算。 |
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In this paper , at first the cfd simulation including the spiral case , stay vane , guide vane , runner vane and draft tube at different operation points is studied , then the result of the pressure distribution on runner blade is provided for the runner structural simulation by fluid - structure interaction ( fsi ) method 本文首先對混流式水輪機全流道內流場進行了多工況的cfd計算，得到不同工況下轉輪葉片表面水壓力載荷，并利用順序流固耦合方法對轉輪在各種工況下的應力特性進行計算。 |
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Fluidized behaviors of ultra - fine powder caco3 of mean diameter 5 um in a spouted bed with a draft tube were investigated , studying the effects of geometry and operating parameters on the two - phase fluidized characters such as the initial spouted behavior , the solid circulation rate , the gas flow distribution in the spout and the annulus , and the solid flow in the annulus 本研究以平均粒徑為5 m的caco _ 3超細粉為物料，對超細粉在導向管噴動床中的流化行為進行了系統的實驗研究，考察了床層結構和操作條件對起始噴動行為、固體循環速率、氣體在床層雙區中的分配以及固體顆粒在環隙區中的流動等氣固兩相流動特征的影響。 |
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It was found that the ultra - fine powder can flow smoothly in a spouted bed with a draft tube under some sorts of design parameter and operating condition , thus a new effective method to improve fluidization quality of the ultra - fine powders is obtained ; at higher supplied gas velocity , an increase in the solid circulation rate is observed ; the extent of the distance between the nozzle and the draft tube inlet result in the promotion of the solid circulation rate ; the solid circulation rate increase with increasing the draft tube diameter or the bed mass ; the gas bypassing is nearly zero in the present work ; and the solid flow in the annulus is observed as a moving bed 結果表明：在一定的床層結構和操作條件下，超細粉可以在導向管噴動床中實現平穩流化，從而為改善超細粉的流化質量提供了一種有效的新方法；固體循環速率與噴動氣流量、導向管直徑、導向管底部與噴嘴出口間距以及床層裝填量成正比；氣體則基本上不存在“旁路”現象；環隙區中的顆粒流動表現為一移動床特征。 |
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The technological innovation and optimum design were implemented by the design organization during the working drawing period , as a result , the new technology of separated floor for draft tube bend is applied , and the optimized arrangement plan of structure is more compact , the structure form is more rational , rate of progress is accelerated , about 1 . 37 hundred million yuan is saved , which is of significant general benefits 施工詳圖階段，設計單位根據創建節約型社會的宗旨，積極開展一系列技術創新和優化設計工作，并首創了廠房尾水管肘管段分離式底板新技術，優化設計后樞紐布置更加緊湊，建筑物結構形式更為合理，加快了施工進度，節約工程投資約1 . 37億元，綜合效益顯著。 |
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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，并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。 |
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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。 |
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From this work , a new way to improve the fluidization quality of the ultra - fine powders is found , and the studying result can supply as a basis of further investigation and be able to be used in the design of a spouted bed with a draft tube for the ultra - fine powders 本研究為改善超細粉的流化質量提供了一種新的思路，研究成果為進一步四川大學碩士學位論文開展有關基礎研究和開發超細粉導向管噴動床反應器提供了良好的基礎。 |
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Thirdly , the correlative coefficient is computed between the pressure fluctuation signal of draft tube and the displacement signal of upper guide bearing , the thrust bearing and the head cover , with this the conclusions on the shafts response due to pressure surge in 并與模型尾水管壓力脈動試驗結果進行對比?結合流動仿真試驗以及動力特性計算結果,全面分析?評定機組的實際運行狀況,劃定運行區域,為電站合理調度 |
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Abstract : the liner of turbine draft tube in ankang water power station was punched by cavitation , which leads to welding crack , metal shed and concrete delve , water spurting out . the cause of the damage is analyzed , the treatment is expounded 文摘:論述了安康水電站水輪機尾水管里襯被汽蝕破壞穿透、焊縫開裂、撕裂掉塊、混凝土掏空、大量噴水的事故原因及處理方法。 |
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The liner of turbine draft tube in ankang water power station was punched by cavitation , which leads to welding crack , metal shed and concrete delve , water spurting out . the cause of the damage is analyzed , the treatment is expounded 論述了安康水電站水輪機尾水管里襯被汽蝕破壞穿透、焊縫開裂、撕裂掉塊、混凝土掏空、大量噴水的事故原因及處理方法。 |
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The units “ vibration , noise and pressure fluctuation in the draft tube are measured in wanjiazhai hydro power station . eighteen measuring points were arranged on the 2 # and 5 # units respectively 尾水管壓力脈動以及噪聲等重要參數進行測量分析,試驗包括2 #機組和5 #機組各18個有效測點 |
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Extracting dynamic characteristic information on draft tube of hydraulic turbine by using wavelet packet 用小波包分析提取水輪機尾水管動態特性信息 |
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Analysis of the destruction of the francis turbine draft tube inner side of dongjiang power plant 東江電廠水輪機尾水管里襯破壞原因初探 |
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Draft tube gate 尾水閘門 |
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Calculation for transverse force of vibration in turbine runner induced by draft tube surges 水輪機尾水管渦帶誘發的轉輪橫向激振力計算 |
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Computation of three - dimensional unsteady periodical turbulent flow though a draft tube 尾水管動態計算湍流模式的選擇 |
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Analysis and treatment on cavitation damage in liner of turbine draft tube 水輪機尾水管里襯汽蝕破壞分析處理 |
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Technology optimization of drying wheat by spouted bed with draft tube 導向管噴動床小麥干燥工藝優化研究 |