specific speed 中文意思是什麼

specific speed 解釋
比較回轉數
  • specific : adj 1 特殊的；特有的；特定的，專門的。2 明確的，具體的。3 【生物學】種的；【細菌】專性的。4 【醫...
  • speed : n 1 快，迅速。2 速率，速度。3 （汽車的）變速器，排擋。4 （膠片，照相紙）感光速度。5 〈古語〉興隆...
  1. Experimental research on low specific speed roto - jet pump

    低比轉數旋噴泵的試驗研究
  2. The roto - jet pump is a new kind of very low specific speed pump which is developed in recent years. it is always used in carbin black, food production, chemical industry and deep well mining system to supply the steady outflow with low flux and high pressure

    旋轉噴射泵是近些年才發展起來的一種極低比轉數泵，主要用在碳黑、食品、化工以及深井采礦系統中用以提供小流量高水頭的穩定出流。
  3. This paper elaborates the parameters selection of the 700mw turbine for laxiwa power station located upstream yellow river, which is coming into construction soon. through statistical calculation of specific speed for turbines with large capacity, high operating head in domestic and oversea power station, utilizing turbine homologous theory. adopting regression statistic calculation method, it has got specific speed statistic equation., the demonstration of primary parameters selection, and the primary target parameters suitable for laxiwa power station

    本文針對黃河上游即將開工建設的拉西瓦水電站700mw水輪機的參數選擇進行了研究，通過對國內外的大容量、高水頭水輪機的比轉速統計計算，利用水輪機的相似理論，採用回歸統計計算方法，統計出了比轉速統計方程，並進行了水輪機主要參數選擇論證，提出了適合拉西瓦水電站水輪機的主要目標參數。
  4. Dynamic specific speed

    動力比速
  5. An ultimate specific speed method checked by formula of manufacturer is proposed

    提出用極限比速法，並採用廠家公式校核的方法選取沖擊式機組。
  6. But there is still a difficult problem present in the low specific speed sewage pumps : with changeable operation points, the motor is often destroyed by overload, which restricts the application of the pump in many fields

    但是低比速排污泵在工況多變的場合極易因過載而燒毀電機，這一問題一直沒有得到很好的解決，這大大限制了排污泵的使用范圍。
  7. It is a vane pump with high head, small flow and low specific speed, which is smaller, flight and simpler in structure than positive displacement pump mulfistage centrifugal pump, and may handle liquid of high gas or steam content

    該泵是一種高揚程，低比速的葉片泵，比容積式泵和多級離心泵體積小、重量輕、機構簡單等優點，並可以輸送氣體或蒸氣含量較輕的液體。
  8. Under the premise of ensuring the pump ' s normal performance, and its non - overload characteristics and aimed at lowering the maximum brake horsepower, the author also analysis the problem resulted from the saturation brake horsepower of the low specific speed sewage pumps and the solution to it. 3

    推導了排污泵飽和軸功率特性產生的理論條件，導出了無過載排污泵設計的基本方程，在保證泵性能要求的前提下，同時實現無過載要求，討論了低比速排污泵設計中存在的問題及解決的途徑。
  9. Comparing tow methods of efficency pre - estimation, it finds out the new method fit for super - low specific - speed pump. acoording to the study and comparison on efficency and reliability, the thesis points out merits and faults of the 5 types of impeller, and draws a conclusion that the complex impeller and partly blocked - flow - passage impeller are fit for the impellers of super - low specific - speed centrifugal pump

    比較了泵效率預估的方法，提出了適合於極低比轉數泵效率預估的新方法，並對其性能要求的效率和可靠性兩方面進行了研究比較，指出了五種形式葉輪各自的優缺點，得到結論：復合葉輪和部分堵塞流道的一般葉輪適合作極低比轉數泵葉輪。
  10. Using silicon dioxide, magnesia, aluminum hydroxide to react with sulfonic acids, color fixatives under standard proportioning, through curing and drawing into thread - like form, this product is made with mechanical twisting as per specific speed and number of strands after drying treatment, featruing a certain tensile strength

    本品用二氧化硅、氧化鎂、氫氧化鋁同磺酸、固色劑等按標準配比反應，經固化抽制線狀，再經乾燥處理后，並按規定速數和股數，經機械加捻而成，並有一定的抗拉強度。
  11. Design of small - discharge low - specific - speed submersible sewage pump

    小流量低比轉速潛水排污泵的設計
  12. The increasing - flow design method is presented on superlow - specific - speed high - speed centrifugal pump in this paper

    闡述了超低比轉數高速復合葉輪離心泵的加大流量設計方法，並給出了兩個設計實例。
  13. Super - low specific - speed centrifugal pump is a part of centrifugal pumps, which is widely used in aerospace and petrochemical industries

    極低比轉數離心泵（ ns < 30 ）是離心泵的一部分，其在宇航事業和石化工業等領域應用廣泛。
  14. According to the distribution of pressure and velocity on the 5 types of impeller, it analyses and discribes the feature of internal flow in super - low specific - speed pump impeller

    通過對五種葉輪內流動的模擬比較，描述了極低比轉數葉輪內流動的特點。
  15. A new type of very low specific speed pump ? roto - jet pump is presented for low flowrate and high head transportation, which is introduced at the end of the thesis

    論文最後主要研究了一種隸屬于極低比轉數離心泵范疇的新型泵? ?旋噴泵，它是一種新型的石油化工用泵，具有流量小、揚程高、流量揚程曲線平緩的特點。
  16. This thesis also describes the numerical simulation of three - dimensional turbulent flow in super - low specific - speed impeller, points out the turbulence model and numerical solution for it, and gives the writer ' s view of the grid - generation

    論文的另一部分工作是數值模擬極低比轉數泵葉輪內部流動，提出了適合的湍流模型和數值解法，並對網格的劃分提出了自己的看法。
  17. In present thesis, the actual design theories and methods for super - low specific - speed pump are introduced first, including " the increased flowrate design method ", " the method of anti - hump on h ~ q characteristic curve ", " non - overload design method ", " the design method of complex impeller " and so on. according to these methods, 5 types of impeller have been designed

    論文首先對極低比轉數離心泵的現行設計理論和設計方法作了介紹，包括加大流量設計法、減小或消除揚程曲線駝峰的途徑、無過載設計及復合葉輪設計法等，並按照這些方法設計了五種葉輪。
  18. Dimensionless specific speed

    無因次比轉速
  19. The capacity and size of modern hydrogenerator set are larger with rapid developing of hydroelectric engineering, specific speed of hydraulic turbine increase too. the phenomenon of excessive vibration in some load area is founded ubiquitously

    隨著水電工程建設的高速發展，現代水輪發電機組的容量和尺寸日趨增大，比轉速也相應提高，普遍出現在某些工作區域內振動過大的現象。
  20. Kinematic specific speed

    運動學比速率
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