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MULTISTAGE PUMP BODY AND MULTISTAGE GAS PUMP
MULTISTAGE PUMP BODY AND MULTISTAGE GAS PUMP
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机译:多级泵体和多级气体泵
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摘要
A multistage pump body comprises a first pumping chamber (20) and a second pumping chamber (21). A connecting duct (26a) puts an outlet (27) of the first pumping chamber (20) into communication with an inlet (28) of the second pumping chamber (21). A leaktight conduit (40) is provided for the circulation of a cooling liquid. The connecting duct (26a) is a lateral duct of the multistage pump body. A heat-conducting wall (33) partially delimits the connecting duct (26a) and has an external surface (34) on the outside. At least one portion of the connecting duct (26a) passes between this external surface (34) of the heat-conducting wall (33) and the leaktight conduit (40).
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