脱硫循环泵的汽蚀

电力18讯：    
<p>由于WFGD工程的特点决定输送浆液的温度较高，富含气泡，并且含有大量固体颗粒。因此，由于浆液的蒸发和并发的气泡挤压破裂，造成特殊的振动和气体凝聚和疏散的压力波动，会影响泵的安全运行。需关照了以下两个方面：<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1.气体对流道的堵塞现象，会引起泵流量、扬程和效率的下降。<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.汽泡在材料表面破裂引起的材料损失（汽蚀），要选择抗汽蚀能力强的材料。<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 下面是一些材料的抗汽蚀特性。</p>
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<p class="MsoNormal" style="MARGIN-LEFT: 15.75pt">Material</td>
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<p class="MsoNormal" style="MARGIN-LEFT: 15.75pt">Designation</td>
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<p class="MsoNormal" style="MARGIN-LEFT: 15.75pt">Material No.</td>
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<p class="MsoNormal" style="MARGIN-LEFT: 15.75pt">Index Weight loss</td>
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<p class="MsoNormal" style="MARGIN-LEFT: 15.75pt">Castiron</td>
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<p class="MsoNormal" style="MARGIN-LEFT: 15.75pt">GG25</td>
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<p class="MsoNormal" style="MARGIN-LEFT: 15.75pt">0.6025</td>
<td style="BORDER-RIGHT: windowtext<