drop valve 中文意思是什麼

drop valve 解釋
（蒸汽機中上下活動的）活門，活閥。

  • drop : n 1 滴；液滴，水滴。2 〈pl 〉 【藥學】滴劑；滴眼藥。3 微量，點滴；一口[杯]酒。4 滴狀物；耳墜；水...
  • valve : n 1 【機械工程】閥，活門，舌門；汽門。2 【解剖學；動物學】瓣，瓣膜；（貝）殼瓣；【植物；植物學】...
  1. In chapter 4, the principle drawing of the system is presented after adding a constant - pressure - drop valve. the operating principal of the valve is briefly introduced. the static mathematical model is built up and study is carried out by means of simulation under the circumstance of matlab, then the static working point is obtained

    對定差減壓閥作了簡要的介紹，根據系統工作原理圖建立靜態數學模型進行模擬研究，由模擬結果分析系統靜態工作特性，得到靜態工作點；然後，建立系統動態模型，對其動態特性進行非線性模擬研究，並就環境因素變化對系統工作特性的影響作了詳細分析。
  2. This paper supplied a new way through variable frequency variable speed ( vfvs ) to change its output flow rate and adding a constant - pressure - drop valve, which could solve the defects in hydraulic pressure servo control system, such as low efficiency in control system, short life, poor ability in resisting pollution, low efficiency in driving system and flow rate, pressure pulse. and this way was proved to be effective

    本論文針對傳統伺服控制系統效率不高、元件壽命短、抗污染能力差、驅動系統效率低、存在流量及壓力脈動等缺陷，利用先進的交流變頻調速技術改變液壓泵轉速的容積調速新方法，提出了在液壓系統中加一個定差減壓閥的新思路，較好地解決了液壓伺服系統存在的上述問題。
  3. By comparing the dry plate pressures drop and distributions of velocities simulated on single valve with those of double valves, it was found that there was intense turbulence in the flow fields around fixed - valve, there were eddy areas between valve side orifices and tray wall, there were eddies above the valves too, these led to the complex behaviors of gas perforating valve, these had a great effect on the gas - liquid mass transfer process. at the same time, in order to prevent the disadvantageous effect of gas between one valve with another on the gas - liquid mass transfer, it was very effective to change the fields of gas perforating valve by folding the edges of valve

    通過對數值模擬得出的單閥和雙閥塔板的干板壓降及流場速度分佈分析對比后發現，固定閥周圍流場存在較強的湍動，閥側孔與塔板壁面區域以及閥體的上方空間存在明顯的渦流區，使氣體穿閥后的行為變得復雜，並對氣液傳質過程產生重大影響；模擬結果表明，為防止和削弱固定閥間的對沖造成的「死區」對傳質帶來的不利影響，通過折邊來改變氣體的氣路是非常有效的，模擬值與實驗值基本得到吻合。
  4. At first, in the process of experiments, it were measured that dry plate pressures drop and point pressures in the flow fields around the single fixed - valve and double fixed - valves under different velocities by using of pitot tube. after that point pressure was transformed to point velocity, two dimensions flow plane of flow fields around fixed - valve were plotted to observe the difference between of the fixed - valve tray with fold edges and the common rectangular fixed - valve tray on the distributions of flow fields and pressures, to provide comparisons and refer - rence for cfd simulation

    在實驗中，利用測速管等儀器對在不同速度下的單閥和雙閥固定閥周圍的流場進行了點壓力測量，然後把點壓力轉化為點速度后繪出固定閥周圍流場的二維流線圖，同時測定了塔板的干板壓降，來考察新型固定閥帶折邊后對流場分佈和壓降的影響，為隨后的數值模擬提供對比和依據。
  5. Kai xuan - check cast steel valve in the fully open state, almost unimpeded fluid pressure, the pressure drop through the valve relatively small

    旋啟式止回閥在完全打開的狀況下，流體壓力幾乎不受阻礙，因此通過閥門的壓力降相對較小。
  6. Adjust balancing valve until pressure differential gauge reads pressure drop required for desired flow rate gpm

    調整平衡閥直到壓差表讀出壓降符合所要求的流量（加侖/分鐘）為止。
  7. When the altitude control senses a drop in level below the predetermined setpoint the valve opens to fill tank

    當水位控制器感應到水位下降到預置設置點以下時，則閥門開啟，開始對容器注水。
  8. Like closing valves, fluid movements of check valve through the channel is narrow and therefore the lifting of check valve through the pressure drop kai xuan than some big - check valve, and the rotary kai - flow check valves are very few restrictions

    像截止閥一樣，流體通過升降式止回閥的通道也是狹窄的，因此通過升降式止回閥的壓力降比旋啟式止回閥大些，而且旋啟式止回閥的流量受到的限制很少。
  9. Because the operation in water hydraulic valves is controlled by flow fluid and the pressure drop results from energy loss of flow fluid past valve channel, the flow state of fluid in valves becomes the most important factor for the operational property of valves

    由於水壓閥是通過控制流體流動來操作系統的，閥的壓降也來自於流體流經閥道時的能量損失，因此閥內的流體流動狀態就成為決定閥操作性能最為重要的因素。
  10. Control valve characteristic depends on its flow rate, pressure drop, static pressure and valve stroke

    這些特性的明了與掌握，有助於控制閥的設計與操作問題的排除。
  11. The top of retainer must drop just below threads in the valve body

    護圈上方必須放置在閥門閥體螺紋以下。
  12. Crane globe valves are highly efficient for services requiring frequent operation and throttling when pressure drop across the valve is about 20 % of inlet pressure

    當通過閥門的壓降為管路壓力的20 %左右時，美國克雷恩截止閥就能夠高效應用在頻繁操作和節流的應用場合。
  13. In line design minimizes pressure drop across the valve thereby assuring maximum pump performance

    直線結構將通過閥門的壓降減小到最小程度，從而保證泵性能的最優化。
  14. A single reducing valve can be applied if operating flow, requirements are within the capacity of one size valve, and pressure drop is outside the cavitation zone

    如果一個閥門通徑可以滿足工作流量和要求，並且壓降處于空穴區外，則可以安裝單個減壓閥。
  15. Its use offers a simple method of determining the best size of stop - check valve, as well as the pressure drop under varying conditions of flow, without any computation

    它提供一個簡單的方法來確定最適合的截止止回閥通徑，以及不同流體狀況下的流體壓降，不需要任何的計算。
  16. Repeat steps 2 and 3 for other possible valve sizes, tabulate results, and make size selection on basis of pressure drop and duration of partial disc lift considerations

    對于其它可能的閥門通徑，重復第2步和第3步，將結果製成表格，然後根據壓降和閥瓣部分提升持續時間等因素，來確定閥門通徑。
  17. Read the pressure drop across the valve with a watts series pg meter

    利用美國瓦茨系列pg儀器讀出通過閥門的壓降。
  18. If it does not drop, but there is slow leakage at test cock no. 3, then no. 1 ball valve has a small leak, but no. 2 check valve is tight

    如果水柱沒有下降，但是測試旋塞3號有點泄漏，則1號球閥有點泄漏，但是2號止回閥密封緊密。
  19. If flow rate is in excess of that specified, turn indicator towards closed position, noting pressure drop and valve setting and determining new flow rates from flow rate chart

    如果流量超過規定，將指示器旋轉到關閉位置，注意壓降和閥門設置，並從流量表中確定新的流量。
  20. If flow rate is in excess of that specified, turn indicator knob towards closed position, noting pressure drop and valve setting and determining new flow rates from flow rate chart

    如果流量超過規定，將指示器旋鈕旋轉到關閉位置，注意壓降和閥門設置，並從流量表中確定新的流量。
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