low speed pump 中文意思是什麼

low speed pump 解釋
低速泵
  • low : adj 1 低的；淺的，矮的。 low flight 低飛。 a low temperature 低溫。 low tide [water] 低潮。 The g...
  • 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...
  • pump : PUMP ＝politically upwardly mobile personality 政治新星，政治上有望晉升人士。n （淺口無帶的）輕舞...
  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. The key items include the car sinking, constant speed characteristics, inspection function, auto relevelling function and level accuracy, etc. the research contents focus on the following three parts : firstly, research on effects of system parameters on car sinking has been completed. secondly, the constant speed performance with the compensation of internal leakage of pump / motor is improved. lastly, research on improvement of the car level accuracy and contrast to that of traction elevators is presented, and the reasons of low car level accuracy of hydraulic elevators are discussed

    重點研究了三方面內容：一是研究了停層沉降特性及影響電梯轎廂停層沉降特性的各種因素；其次是通過負載壓力補償液壓泵馬達內泄漏來改善電梯轎廂速度穩定性；最後是液壓電梯平層精度的理論和實驗研究，並與曳引電梯的理論模型進行了對比，闡述了液壓電梯平層精度低的原因，理論探討了影響液壓電梯平層精度的主要因素。
  4. 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。
  5. 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。
  6. 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。
  7. 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。
  8. The testing technique and system of the newly developed, miniaturized sputtering ion pump with low pumping speed has been developed in accordance with the standards formulated by machine industry

    摘要本文介紹了小抽速微型濺射離子泵的性能測試系統和參考機械行業標準確定的測試方法，探討了測量結果誤差來源。
  9. A method based on the application of an injection process analysis software is introduced in this article, which optimize injection process through changing the design of fuel - injection pump cam. a model of 1115 single cylinder direct injection diesel engine is used as an example. with the help of pre - journey optimization, increasing cam lift and using tangent - function can make the matching of the injection system with the diesel more reasonable. without changing fuel pump installing size, it can enhance injection rate and injection pressure and improve the diesel operating stability in low speed condition

    本文以國產1115型單缸直噴柴油機為例，介紹一種應用噴油過程分析軟體改進噴油泵凸輪設計的方法，通過增大噴油泵凸輪升程、採用切線函數凸輪並優化預行程的方式，在不改變噴油泵安裝尺寸的前提下，可提高噴油壓力和噴油速率，改善柴油機低速工作穩定性，使噴油系統與柴油機匹配更合理。
  10. 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
  11. 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。
  12. 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。
  13. 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。
  14. 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。
  15. First super - low specific - speed centrifugal pump has a long and narrow flow passage for its high head and low capacity, and the power absorbed by disc friction is too high, so the efficiency is very low ; secondly the diffusion of flow passage is so high, that the reserved flow often emerges at the inlet and outlet of impeller. therefore the h ~ q characteristic curve is often hump - shaped, and at the low - capacity operating condition the instability often occurs ; thirdly the centrifugal pump at high - capacity operating condition is easy to overload because the n ~ q curve appears a rising trend

    首先由於它的揚程較高、流量較小，所以它的流道狹長，圓盤摩擦損失較大，效率相對較低；其次由於它的流道擴散較嚴重，易在葉片進口產生迴流和在出口產生脫流，揚程流量特性曲線易出現駝峰，在小流量工況下易產生不穩定現象；第三，由於其功率流量曲線呈現上升趨勢，在大流量區運行時電機易過載。
  16. A closed loop system composed of high speed hydraulic pump and low speed hydraulic motor

    高速液壓泵低速液壓馬達組成的閉式系統
  17. Zlgd series vertical low rotation speed centrifugal pump is applicable for occasions with low requirements for environment noise, air - conditioning circulation, etc

    Zlgd系列立式低轉速離心泵，適用於環境噪聲要求很低的場合及空調循環等。
  18. The test shows that the vector control speed system has low inverter power, high power factor, perfect dynamic performance, wide speed range. it suits the variable speed system of fan machine and pump and has good prospect on industry application

    試驗證明調速系統具有變頻器功率小、功率因數高、動態性能好、調速范圍廣等優點，適用於風機、泵類負載的調速，有良好的工業應用前景。
  19. By discussing in detail the shapes and types of pump characteristic curves and the effects of geometrical parameters on them, this paper points out that the main reason of the brake horsepower of the low specific speed sewage pump increasing with capacity rapidly is that we often select larger geometrical parameters such as b2, ft and so on to enhance the capacity of the sewage pump

    詳細討論了離心式排污泵特性曲線的形狀和種類，以及幾何參數對排污泵特性曲線的影響，指出排污泵設計中增大b _ 2 、 f _ t等幾何參數是導致軸功率曲線隨流量增加上升很快的原因。
  20. The system simultaneously used the technique of computer, electron as well as single - chip microcomputer, and solved the key problem brought about by the pump ' s high speed revolving all the time. that is, the electrical energy ' s waste, which existed in the water supply system of the city and the high building. at the same time overcome the shortcomimg of long reaction time of the traditional water supply system, varied frequency at low speed, made use of large area, and consume a lot

    該系統集計算機、電子技術於一體，不但解決了目前城市供水系統和小區高樓供水中，水泵一直高速轉動所帶來的電能浪費的問題，而且也克服了傳統的供水系統響應時間長，變頻速度慢，佔地面積大，投資大等缺點，為實時恆壓供水提供了一種實用的方法。
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