Pump for conveying a fluid

A pump for conveying a fluid is proposed, comprising a stationary housing (2), at least one impeller (5, 51, 52, 53) for conveying the fluid from a low pressure region (LP, HP1) to a high 5 pressure region (HP1, HP2), a shaft (6) for rotating the impeller (5, 51, 52, 53) about an axial direction (A)...

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Bibliographic Details
Main Authors JOHNE, Torsten, WELSCHINGER, Thomas, TISCHLER, Heike, GIARDINO, Flavio, RADCLIFFE, Christopher David
Format Patent
LanguageEnglish
Published 08.04.2021
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Summary:A pump for conveying a fluid is proposed, comprising a stationary housing (2), at least one impeller (5, 51, 52, 53) for conveying the fluid from a low pressure region (LP, HP1) to a high 5 pressure region (HP1, HP2), a shaft (6) for rotating the impeller (5, 51, 52, 53) about an axial direction (A), and a separation device (20) for restricting a flow of fluid from the high pressure region (HP1, HP2) to the low pressure region (HP1, LP), wherein each impeller (5, 51, 52, 53) is mounted on the shaft (6), wherein the separation device (20) comprises a rotary part (7, 35, 70) connected to the shaft (6) in a torque proof manner, and a stationary 0 part (8, 26) configured to be stationary with respect to the housing (2), wherein the rotary part (7, 35, 70) and the stationary part (8, 26) are configured to face each other and to delimit a gap (9) between the stationary part (8, 26) and the rotary part (7, 35, 70), said gap (9) being arranged between the high pressure region (HP1, HP2) and the low pressure region (HP1, LP), wherein the stationary part (8,26) comprises an annular recess (12) facing 5 the rotary part (7, 35, 70), or the rotary part (7, 35, 70) comprises an annular recess (12) facing the stationary part (8, 26), wherein the recess (12) comprises a bottom (121), and wherein a non-metallic insert (13) is provided in the recess (12). A relief channel (14) is provided, configured for a fluid communication between the bottom (121) of the recess (12) and the low pressure region (HP1, LP). 0 (Fig. 2) 13404363_1 (GHMatters) P114081.AU Ic coo
Bibliography:Application Number: AU20200223675