【Mechanical Equipment Technology Exchange Edition】Mechanical Equipment 【Daily Question】20201229
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The reason for the low head pressure of a centrifugal pump is (B). A. High inlet pressure B. Too low rotation speed C. Poor alignment of the couplings D. Excessively large outer diameter of the impeller. For the daily question activity in the rotating equipment section, please reply within 3 days.;victory: Rewards range from 5 to 15 points depending on the quality of the response, with additional rewards for those who can provide detailed answers. All forum members are welcome to participate actively and help promote the development of the forum! ! !
C. Poor alignment of the coupling D. Excessively large outer diameter of the impeller
B. The rotation speed is too low. The parameters that affect head are speed and the outer diameter of the impeller. The pump head is proportional to the square of the speed; too low a rotational speed will result in a reduced head. Option D: A larger outer diameter of the impeller increases the head.