发明名称 |
MULTI-STAGE PUMP AND METHOD OF MANUFACTURE |
摘要 |
FIELD: motors and pumps. ^ SUBSTANCE: inventions relate to extended pump assembling method and system. The pump is provided with a multiple set of stages within the external housing limits. The housing consists of two thread-connected sections. Each stage includes impeller and diffuser. The diffusers are split into separate groups, which are compressed by the first and second elements working in compression during pump assembling. The diffusers are loaded independently in each group. ^ EFFECT: reduced cumulative compression loading in each group and reduced probability of axial backlash loss during stages compression. ^ 30 cl, 5 dwg |
申请公布号 |
RU2355915(C2) |
申请公布日期 |
2009.05.20 |
申请号 |
RU20040128892 |
申请日期 |
2004.09.30 |
申请人 |
SHLJUMBERGER TEKNOLODZHI B.V. |
发明人 |
VATSON ARTUR I. |
分类号 |
B23P11/00;B23P15/00;F01D1/02;F04B17/00;F04D1/06;F04D13/10;F04D29/62 |
主分类号 |
B23P11/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|