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泵的并联

泵的并联.

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泵的并联

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  1. 泵的并联 特点： 两台泵的吸入、排出管路相同——管路特性曲线相同； 两台泵的流量、压头相同——泵的特性曲线相同； 对于“泵” 的特性曲线，同一压头下，两台并联泵的流量等于并联中单台泵的两倍； 并联后总流量增大，但低于原独立的单台泵流量的两倍。

  2. 泵的串联 特点： 两台泵的流量、压头相同——泵的特性曲线相同； 对于“泵” 的特性曲线，同一流量下，两台串联泵的压头等于并联中单台泵的两倍；（注意：流过两台泵的流量是相同的。） 串联后总流量、总压头增大，但压头低于原独立的单台泵压头的两倍。

  3. 判断泵的联接是串联还是并联 高阻管路 低阻管路 并联 串联 单泵

  4. 判断图中泵的联接是串联还是并联

  5. 七、离心泵的类型与选择 1.类型 按液体性质分:水泵、耐腐蚀泵、油泵、杂质泵 按叶轮吸入方式分：单吸式、双吸式 按叶轮数目分：单级式、多级式 2.选择 步骤： （1）确定He和Qe，Qe按生产中的最大流量考虑；（2）选泵的类型与型号； （3）列出所选泵的各种性能参数； （4）核算泵的轴功率

  6. 八、离心泵的安装与操作 离心泵的重点：性能、性能曲线及性能的改变；安装高度；流量调节；选泵

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