impeller head 中文意思是什麼
impeller head
解釋
拋丸器-
It have gland - open pump, non - htrottling - process pump, gear pump, cross impeller pump, tilted tray pump ; the four head neck - shrinking and edge - upturned machine, automatism pot - body three shrink neck cross border machine, shrink neck envelop pot assembled machine, envelop pot assembled machine, beat code machine ; glaze machine, press light machine, duplicate membrane machine, etc. product move off sugar - refinery, food can beverage, pack make pot, petrochemicals, printing, etc. court immensity user recognition and trust. welcome to use, wholeheartedly serve
有開蓋泵無阻塞泵輪泵十字葉泵斜盤泵四頭縮頸翻邊機自動罐身三縮頸翻邊機縮頸封罐組合機封罐機打碼機上光機壓光機，復膜機等。 -
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。 -
Until now, there have been a few reports on the damage of the water pumps caused by sand and water cavitation. by use of the test loop for solid and liquid two phases, under the condition of 3 % head drop, the damage location and relative degree of the sand and water cavitaiton occurred on the impeller were tested and researched. the result was, them, compared with the results under the condition that water cavitation occurred and no cavitation but only wear occurred. the differencts were analyzed. the analysis result can be used as the basis of the further research and the improvement of the impeller shape
目前含沙水汽蝕對水泵損傷方面的報導甚少，本文利用固液兩相流試驗臺，對離心泵閉式葉輪在含沙水汽蝕時（ 3揚程下降點）的損傷部位和相對程度進行了試驗研究，並將此結果與清水介質發生汽蝕時的損傷情況[ 13 ]及含沙水無汽蝕情況下的磨損情況[ 7 ]相比較，對其差異進行了分析，為今後進一步探討葉輪損傷機理和葉型改進提供了實驗依據。 -
Amount of impeller head
拋丸量kg min設備功率kw -
An optimized impeller in a mixed - flow pump, where the head and the efficiency increased by 7. 43 % and 3. 37 % respectively, confirmed the validity of this newly proposed method
通過對一臺混流泵葉輪進行優化，揚程和效率分別提高了7 . 43 %和3 . 37 % ，從而驗證了該方法的實用性。 -
Through incision experiment on the impeller of circulating pump times and times, the relation between the size of incision and the capacity and head of the pump was discussed, the law of performance was summarized after the impeller is incised, the existing formula was revised
摘要經過對混流泵葉輪多次切割試驗，探討了葉輪切割量與泵的流量、揚程之間的關系，總結了混流泵葉輪切割后的性能變化規律，進而對現有公式進行了修正。
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