| 摘要 |
A housing assembly for pressurized fluids is provided, having a cover removably attached to the housing in a manner that allows jacking of the cover into and away from sealing engagement with the housing, comprising, in combination, a housing; a fluid chamber in the housing; a fluid inlet and a fluid outlet in the housing in fluid flow connection with the fluid chamber; and a removable cover assembly closing off an open end of the fluid chamber and comprising a cover movable into and out from sealing engagement with the housing; a jack ring removably attached to the housing and having a central aperture; and optionally, when the vessel is pressurized, also having a peripheral portion to the housing engaging a peripheral portion of the removable cover; and means attaching the movable cover axially to the jack ring at the central aperture in a manner such that the jack ring engages the cover at a central portion adjacent the central aperture of the jack ring, and optionally also at a peripheral portion adjacent the peripheral portion of the jack ring, and jacks the cover onto the housing into sealing engagement therewith by such engagement when the jack ring is being attached to the housing, and off from the housing out from sealing engagement therewith, by engagement through the attaching means at a central portion of the jack ring adjacent the central aperture thereof when the jack ring is being removed from the housing, and optionally also at a peripheral portion with the peripheral portion of the jack ring, so that the removable cover is jacked onto the housing and off from the housing by the jack ring, for access to the fluid chamber within the housing.
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