hump speed 中文意思是什麼
hump speed
解釋
斷階滑水速度-
The hump of houma north railway station is a mid - automation of hump yard. the auto - controlled system equipped with hook cars way and the semi - automated controlled system of hook cars ' sliding speed ensure the capability of hump disintegration
侯馬北站駝峰是中能力駝峰，裝置有鉤車溜放進路自動控制系統和鉤車溜放速度半自動控制系統，為提高駝峰的解體能力提供了保障。 -
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。 -
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。 -
Hump lead speed reducer is a special equipment urgently needed in railway car grouping station of small or medium capacity
摘要駝峰減速器是當前中、小能力車列編組站駝峰改造過程中急需研製的一種專用調速設備。
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