如何选择好的石油炼化行业用泵

<span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">工况：石油炼化行业液化气LPG／丙烯（C3H6）n输送</span><br style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;" /><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">&nbsp;&nbsp;&nbsp;&nbsp;参数：一般设计进口压13～16公斤，需150或以上泵的</span><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">扬程</span><br style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;" /><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">泵</span><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">选择：API标准的石化流程泵VS屏蔽泵</span><br style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;" /><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">&nbsp;&nbsp;&nbsp;&nbsp;参考厂家：大连宝隆泵业制造有限公司</span><br style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;" /><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">&nbsp;&nbsp;&nbsp;&nbsp;石油炼化行业液烃／轻油／LPG／丙烯等工况。采用大连宝隆泵业制造有限公司生产的</span><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">屏蔽泵</span><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">与石化流程泵相比较，有明显的优势。</span><br style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;" /><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">&nbsp;&nbsp;&nbsp;&nbsp;1．&nbsp;易燃易爆工况：采用机械密封的石化泵，密封原理机封&nbsp;动镜环在高速旋转时形成液膜，对机封进行冷却。存在泄漏隐患。屏蔽泵整机防爆，完全无泄漏。防爆等级DIIBT3／DIIBT4，防护等级：IP54／IP55，比较适合易燃易爆工况；</span><br style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;" /><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">&nbsp;&nbsp;&nbsp;&nbsp;2．&nbsp;石化流程泵依据API610标准，按机封标准API682中PLAN11／PLAN11＋52方案比较：进口压力过大，导致PLAN11机封使用寿命短。PLAN11＋52方案导致采购成本过大。而选用屏蔽泵可按用户要求设计压力，不必考虑进口压。</span><br style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;" /><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">&nbsp;&nbsp;&nbsp;&nbsp;3．&nbsp;使用成本比较：除叶轮、泵体等部件外，石化泵2年备品备件一般需提报轴承／机封／轴头螺母／轴／轴承卡簧／梅花垫／联轴器／机封压盖等，而屏蔽泵一般只需提报轴承／轴套＋推力盘即可。</span><br style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;" /><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">&nbsp;&nbsp;&nbsp;&nbsp;综合以上主要几点，在该行业中选择屏蔽泵</span><span style="font-family: Simsun; font-size: 14px; line-height: 25px; white-space: normal;">有优势。</span>