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<title>泵的效率及公式-设计参数中华真空设备网</title>
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{+ d/ _* y, A* A/ i 当前位置：<a href="/">首页 </a> -> <a href="/design/">设计参数 </a> -> 泵的效率及公式 A: B# R3 o; b; I& y3 _$ c
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<td height="32" align="center" valign="bottom"><font style="font-size:16px; font-weight:bold" color="#05006c">泵的效率及公式</font></td>
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5 s/ P" F8 r3 p$ X <td height="18" align="center" valign="top">信息来源：<font color="#990000">天津市海牛工业水泵厂</font> | 发布时间：<font color="#990000">2006-8-14 16:52:06</font>
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<td style="font-size:13px;line-height:200%">< ><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">指泵的有效功率和轴功率之比。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'">η=Pe/P<BR></SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">泵的功率通常指输入功率，即原动机传到泵轴上的功率，故又称轴功率，用</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'"></SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">表示。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'"><BR></SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">有效功率即：泵的扬程和质量流量及重力加速度的乘积。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'"><BR>e=ρg QH (W) </SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">或</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'">e=γQH/1000 </SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'">KW</SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">）</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'"><BR>ρ</SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">：泵输送液体的密度（</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'">kg/m3</SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">）</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'"><BR>γ</SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">：泵输送液体的重度</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'"> γ=ρg </SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">（</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'">N/ m3</SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">）</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'"><BR>g</SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">：重力加速度（</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'">m/s</SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">）</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'"><BR></SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">质量流量</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'"> Qm=ρQ (t/h </SPAN><SPAN style="FONT-SIZE: 10.5pt; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'">或</SPAN><SPAN lang=EN-US style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New Roman'"> kg/s)<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com fficeffice" /><o:p></o:p></SPAN></P></td>8 e2 b8 ?6 L$ o& z( q
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