Interlocking diffuser arrangement in electrical submersible pump
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United States of America Patent
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Jul 5, 2022
Grant Date -
N/A
app pub date -
Mar 22, 2021
filing date -
Mar 22, 2021
priority date (Note) -
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Abstract
An electrical submersible well pump has upper and lower diffusers non-rotatably mounted in a housing. A rotatable impeller between the upper and lower diffusers has a bottom shroud. An outward-facing wall is on an upper end of the lower diffuser. A lower end of the upper diffuser has an inward-facing wall that fits closely around the outward-facing wall of the lower diffuser. A key mounted between the inward-facing and outward-facing walls prevents relative rotation between the diffusers. The key extends axially above an upper end of the neck and radially inward from the inward-facing wall of the upper diffuser into close proximity to the bottom shroud, creating a sand dam.
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