節流流量比 的英文怎麼說
中文拼音 [jiéliúliúliángbǐ]
節流流量比
英文
throttle-flow ratio- 節 : 節構詞成分。
- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 量 : 量動1. (度量) measure 2. (估量) estimate; size up
- 比 : Ⅰ動詞1 (比較; 較量高下、 長短、距離、好壞等) compare; compete; contrast; match; emulate 2 (比...
- 節流 : 1. (節省經費開支) reduce expenditure 2. [工業] orificing; choke; throttle down, throttle back; throttle
- 量比 : fnc
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There is an interest thing in companies that weak executive power company is good at concoctive power or producing good quality products
我們會發現一個很有意思的現象,那些執行力差的公司往往有幾個環節是行業里出色的甚至是一流的,比如策劃能力、比如產品質量等等。The optimization system of water supply networks is very complicated. it deals with lots of factors from the process of networks " modeling, node demand calculation, initial flow distribution, and the optimal design to the drawing of pipe networks and isopiestic line. the total effect will be better if amelioration is imposed on each part of these processes
給水管網優化系統是一個比較復雜的系統,從管網的建模、節點流量的計算、初始流量的分配、優化計算到管網圖形和等水壓線的繪制,涉及的因素很多,任何一部分的改進與完善都有利於整體優化效果的提高。According to pump performance curve shown we can get that the distance h is changed with the rotate speed n in the same point q, and the flux q is changed with the rotate speed n in the same point h. from the curve we can get the rule that the distance and rotate speed are in direct with ratio at the same flux point, and the rotate speed and the flux are also in direct with ratio at the same distance point
根據相似定律:流量與轉速的一次方成正比;揚程與轉速的二次方成正比;功率與轉速的三次方成正比。即在降低轉速,調低水泵出水揚程的同時,功率下降的幅度非常大,從中可以節省相當大的電能。完全應在高水位時降低水泵機組轉速,從而使電機的輸出功率隨著轉速下降值與轉速原值商的三次方關系下降。According to a series of experimental data, the effect of following factors on the temperature in the ultra - low temperature box and cop are analyzed : the mixture composition, the pressure ratio and the return fluid extraction ratio of the rectifying column, the refrigeration capacity and the flow rate through throttle valve
並根據一系列實驗結果,分析了工質配比、循環壓比及精餾柱迴流液的抽取率、加熱量和節流元件對低溫箱內溫度和系統cop的影響,為今後的進一步研究指明了方向。Then pid flow rate control algorithm is introduced. all experiments made in this chapter are about measuring the valve parameters according to spool positions, single actuator flow rate control by the calculated flow rate feedback control method, free flow rate dividing control under the sufficient pump discharge flow rate situation, proportion flow rate dividing and flow rate dividing based on meter - in flow rate feedback control method under insufficient pump discharge flow rate situation. the results of all experiments proved that the method presented in this thesis is an effective way to overcome the unreasonable flow rate dividing when simultaneously operating multi - actuators with different inertia loads
第四章介紹了多執行器復合控制實驗系統和實驗方法;介紹了實驗採用的流量控制的pid演算法;並測定了執行器控制閥和閥芯位移相關的系數;做了單個執行器計算流量反饋流量控制、流量足夠情況下多執行器流量任意分配、流量不足情況下多執行器按比例調節流量分配和多執行器進油側流量反饋分流控制實驗;通過實驗說明了論文提出的分流控制方法能實現大小慣性負載復合操作時的合理分流。The improvement system is made up of the pressure sensor, flow sensor, displacement sensor, electro - hydraulic proportional flow control valve, power amplifier, data gathering board and computer. the platform can carry out testing the hydraulic parameters, processing the tested data, saving the processed data and drawing, adjusting the pressure automatically
改造后的測控系統主要由壓力傳感器、流量傳感器、位移傳感器、比例節流閥、功率放大器、數據採集卡和計算機組成。改造后的實驗臺具有自動採集實驗數據、自動處理實驗數據、自動保存實驗數據、自動調節液壓系統負載壓力等功能,大大提高了實驗臺的工作效率、測試精度和智能化水平。The result shows the volume transport in the four sections have the maximum in summer and the minimum in winter, especially in the two sections of 140 band 170 e. the eddy structure in both sides of the kuroshio extension is another distinct character
結果表明:穿過這四個斷面的流量均呈現夏大冬小的季節變化趨勢,其中140 「 e和170 「 e兩個斷面的季節變化比較明顯。黑潮延續體另一顯著特徵是主軸南北兩側的多渦結構。To analyze some key technologies of optical network relative with rwa in detail, such as transmission, switching and internetworking ; to emphasize on the research of function, fabric and performance of optical cross - connection ; to carry out numerical simulations for crosstalk introduced by optical cross connect and to present measurements for suppressing it such as doubly filtering, fixing optimum decision threshold and appropriately choosing the number of multiplexed wavelengths ; 3. to research the fundamental principle and some problems relative with rwa, including the type of optical network, the type of traffic, the type of service, the survivability of optical network ; to classify and compare rwa algorithms and particularly research some dynamic rwa algorithms ; 4. to present reserved light - path and classify network resource such as used, unused and reserved status, to emulate establishment of all - optical connection in optical network through modified rwa algorithm and show effectively reducing setup time of all - optical connection utilizing reserved light - path ; to research rwa algorithms of multi - fiber network, to present new link weight functions dependent on node degree, unused fiber ( s ) per wavelength - layer and routing policies, to perform emulation of rwa based wavelength layer graph applying new link weight functions and show them make algorithms better performance and network lower blocking rate ; 5
詳細分析了與rwa相關的光網路關鍵技術,包括傳輸、交換、組網等,重點研究了光交叉連接的功能和結構、性能,對其引入的串擾進行了詳細分析,選擇恰當的器件參數進行了數值模擬,並提出了抑制措施(如雙重濾波、優化判決門限、選擇恰當的復用波長數) ; 3 .研究了光網路的r認叭的基本原理、與r認叭的幾個相關問題(光網路類型、業務類型、流量類型、光網路生存性) 、 r認人演算法的分類和比較,具體研究了幾種動態r場人演算法; 4 .研究了以全光連接建立時間為優化目標的r認認演算法,提出預置光路的概念,對網路資源進行狀態分類(佔用、未佔用、預置) ,利用改進的r認叭演算法模擬,預置光路可為部分新到的連接請求快速建立連接,從而提高網路性能;研究了以多光纖網路連接阻塞率為優化目標的r認城演算法,提出了以節點度數、每個波長分層的空閑光纖數以及路由策略決定的幾種鏈路權重函數,利用基於波長分層圖模型的并行r場人演算法模擬,利用新的鏈路權重函數使得演算法具有更優的性能,使網路具有更低的連接阻塞率。The cooling system for engine adopted hydraulic drive and control technology to control the speed of the fan : the chip adjust the control - current of the proportional value, which used in the engine cooling system, to control the speed of the fan. and the size of the control - current is according to the coolant temperature, coolant temperature change rate and target temperature. as for as the hydraulic cooling system we used a motor to drive and control the fan ’ s work or stop according to the temperature of the hydraulic oil
該系統的特點及其實現的功能為:電液混合驅動方式改變了工程機械冷卻裝置驅動方式單一的缺點,發動機冷卻系統採用了電液比例技術控制風扇轉速;單片機可以根據冷卻液溫度、冷卻液溫度變化率和目標冷卻液溫度調節液壓驅動系統中電液比例閥的控制電流,進而控制液壓油的流量,即可以實現冷卻風扇轉速的連續調節;液壓油冷卻系統採用了電動機驅動,然後由單片機根據液壓油的溫度控制電動機的起動和停止。The paper analyzes the non - lineal relations of the quantity of heat exchange and water flux of coil exchanger in part - load operating condition, the shortage of deciding the water flux in bypass pipe, the disadvantage that the operating condition of pumps and chiller ca n ' t be met with the load change of the air conditioning system in different operating condition of using pressure - difference bypassing control in primary water pump system. using load control method in the change of the operating condition of primary water pump system can realize that the load change is small and reasonable in the on / off condition of pumps and m m chiller by comparing load control method in primary variable - flow water pump system with pressure - difference bypassing control method, back water temperature control method
本論文從目前空調工程中使用的變流量水系統入手,研究了盤管換熱器在部分負荷下水流量與換熱量的非線性關系,分析了文獻中介紹的旁通管通流能力選擇的不足之處和一次泵水系統採用壓差旁通控制時,工況轉換不能滿足系統控制要求的缺陷;比較了一次泵變流量水系統中壓差旁通控製法、回水溫度控製法、負荷控製法的精確性,並得出了在一次泵水系統的工況轉換時,採用負荷控製法能使冷水機組及其相應水泵在啟停時的負荷變化范圍較小,更符合建築物的冷量需求,節能效果較好的結論。The comprehensive control of soil and water loess makes the seasonal distribution of river flow more even by reducing more in flooding season and less in non - flooding season. the paper proposed a method to analyze the impact of the integrated control of soil and water loess on flood flow in a large - scale catchment
水土流失綜合治理使汛期徑流量減少程度大,非汛期減少程度小,從而使枯季徑流量占年徑流量的比例增加,汛期徑流量的比例降低,徑流量的季節分配趨于均勻。The energy input of the ptcrs is made with the relational expression, with the current limiting function, saving more electricity than the one of the nickel and chromium wires
Ptc元件的能量輸入採用比例式,有限流作用,比鎳鉻絲等發熱元件的開關式能量輸入還節省電力。Through analyzing the figure of energy wasting of pump, the quality in pipes is direct proportion of the speed of pump if the speed of pump is reduced. the power of electromotor fell the cube of the speed of pump. so the energy wasting of constant pressure water supply based on variable frequency speed regulating technology is envident less than the traditional mode is used throttle to supply water
分析水泵工況的能耗比較圖,可以看出利用變頻調速實現恆壓供水,當轉速降低時,流量與轉速成正比,功率以轉速的三次方下降,與傳統供水方式中用閥門節流方式相比,在一定程度上可以減少能量損耗,能夠明顯節能。Abstract : various measurement methods of the capacity of gas discharge forpiston type compressor are analized and compared. the orifice choke device that is suitable for measurement in site is recommended emphatically. in combination with the example of measurement in site, the matters needing attention of measurement in site on the capacity of gas discharge for compressor are point out
文摘:對活塞式壓縮機排氣量的各種測量方法進行了分析比較,著重介紹了比較適合於現場測量的孔板節流裝置,並結合現場測量實例指出了壓縮機排氣量現場測量應注意的問題。The arrangement is applicable to the hydropower station with higher head or flow rate and has the advantages such as saving investment, flexible operation and simple electric installations ; which provides an another way with another alternative for hydropower station to select the hydro - generating facilities
這種布置方式可適用於水頭或流量變化較大的水電站,具有節省投資、運行靈活、電氣設備簡化等優點,為水電站水輪發電機組設備的選擇提供了另一條途徑,增加了一個對比方案。Abstract : the applications of commonly used butterfly valve, gate valve, restriction - orifice and wear resistant flow adjusting valve in dedusting system were concretely analyzed, and the mechanism of wear resistant flow adjusting valve was described in detail
文摘:對工程中常用的蝶閥、閘扳閥、節流孔扳和耐磨型流量調節閥在除塵系統中的運用作了具體的分析,並著重對耐磨型流量調節閌的機理進行了比較詳細的論述The change of discharge and diversion ratio of the main junction is calculated by the 1 - d model, and the influence of the engineering on the whole pearl river delta networks is analyzed
同時利用一維數模計算工程后水面線及河網主要節點流量和分流比的變化,從整體的角度分析工程對整個珠江三角洲流域的影響。Harsh throttling, below 35 % of full cv capacity, will require analysis by applications department to determine suitability under possible cavitation, flashing, noise and vibration
如果節流條件比較嚴酷,小於完全流量的35 % ,就應該由應用部門分析並決定在可能的空洞、沖刷、噪音和振動現象下的適用性。The present research and practical indicated that the effervescent atomizer may obtain the good atomization effect in the small alr situation, compares with the ordinary machinery and the medium spray nozzle, has the merits of saving the fuel, reducing pollution and so on, has the broad application prospect
目前的研究及實用表明,氣泡霧化噴嘴可以在小氣液質量流量比情況下獲得較好的霧化效果,與普通的機械和介質霧化噴嘴相比,有節約燃料,減少污染等優點,具有廣闊的應用前景。As the demand for their high quality and good outline is increasing, the hydraulic control system of molding machine must be able to offer accurate pressure and flow control at the same time to its injection system
集壓力、流量比例調節於一體的電液比例壓力流量復合控制閥(簡稱pq閥)以其復合程度高、控制性能好、節能等特點在注塑機液壓控制系統中得到了日益廣泛的應用。分享友人