high specific speed pump 中文意思是什麼
high specific speed pump
解釋
高比速泵-
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。 -
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。 -
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。 -
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。 -
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。 -
Flow pulsation of a specific gear pump is analyzed and the results are given. according to the testing requirement of pump pulsation, the measurement device of the testing flow pulsation, based on iso 10767 - 2 measurement standard, the measurement device of flow pulsation testing is built. high speed dynamic pressure transducer is used to record the pressure pulsation in the pipeline
然後根據齒輪泵流量脈動的檢測要求,採用iso10767 - 2測試方法,搭建了齒輪泵流量脈動測試裝置,採用動態壓力傳感器,對齒輪泵系統進行了壓力脈動測試,利用壓力脈動與流量脈動的比例關系,對齒輪泵流量脈動分析結果進行了驗證。
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