A fluid rotary joint assembly capable of high rotational speed exceeding a maximum rotational speed of a single rotary joint is disclosed herein. For example, the fluid rotary joint may be capable of exceeding rotational speeds greater than 1500 RPM. The fluid rotary joint assembly may have several single-stage fluid rotary joints and multiple gear devices wherein a relative speed between the first and second rotary parts of each single stage fluid rotary joint does not exceed a maximum rotary speed (e.g., 500 rpm). The fluid rotary joint assembly incorporates speed reduction within each stage through the gear device. By controlling the relative speed between the first and second parts of each of the fluid rotary joints to be less than or equal to a maximum allowable rotational speed (e.g., less than or equal to 500 RPM), the fluid rotary joint assembly provides for reliable operation at high rotational speeds between the first stage and the last stage.

A fluid rotary joint assembly capable of high rotational speed exceeding a maximum rotational speed of a single rotary joint is disclosed herein. For example, the fluid rotary joint may be capable of exceeding rotational speeds greater than 1500 RPM. The fluid rotary joint assembly may have several single-stage fluid rotary joints and multiple gear devices wherein a relative speed between the first and second rotary parts of each single stage fluid rotary joint does not exceed a maximum rotary speed (e.g., 500 rpm). The fluid rotary joint assembly incorporates speed reduction within each stage through the gear device. By controlling the relative speed between the first and second parts of each of the fluid rotary joints to be less than or equal to a maximum allowable rotational speed (e.g., less than or equal to 500 RPM), the fluid rotary joint assembly provides for reliable operation at high rotational speeds between the first stage and the last stage.

The invention is directed to a rotary joint which supplies and discharges a liquid to and from a container which is revolved around a rotation axis, the rotary joint includes: a shaft body which is immovably provided; a tube body into which the shaft body is inserted and which is rotated around the shaft body; a shaft-side supply flow path as defined herein; a shaft-side discharge flow path as defined herein; a tube-side supply flow path as defined herein; a tube-side discharge flow path as defined herein; a supply communication flow path as defined herein; and a discharge communication flow path as defined herein, the tube-side supply flow path is inclined as defined herein, and the tube-side discharge flow path is inclined as defined herein.

The invention is directed to a rotary joint which supplies and discharges a liquid to and from a container which is revolved around a rotation axis, the rotary joint includes: a shaft body which is immovably provided; a tube body into which the shaft body is inserted and which is rotated around the shaft body; a shaft-side supply flow path as defined herein; a shaft-side discharge flow path as defined herein; a tube-side supply flow path as defined herein; a tube-side discharge flow path as defined herein; a supply communication flow path as defined herein; and a discharge communication flow path as defined herein, the tube-side supply flow path is inclined as defined herein, and the tube-side discharge flow path is inclined as defined herein.

A water delivery device includes a first conduit section and a second conduit section rotatably coupled to the first conduit section by a magnetic joint. The magnetic joint includes a plurality of magnets that cooperatively define a plurality of rotational positions between the first conduit section and the second conduit section.

A rotary union includes a housing, a rotating machine component supported in the housing, a rotating seal member associated with the rotating machine component, a non-rotating seal member slidably and sealably disposed within the housing adjacent the rotating seal member, an expandable seal disposed between the non-rotating seal member and the housing, and an internal clamp disposed within an end portion of the expandable seal such that the end portion of the expandable seal is compressed between the internal clamp and the bore of the housing.

A rotary union includes a housing, a rotating machine component supported in the housing, a rotating seal member associated with the rotating machine component, a non-rotating seal member slidably and sealably disposed within the housing adjacent the rotating seal member, an expandable seal disposed between the non-rotating seal member and the housing, and an internal clamp disposed within an end portion of the expandable seal such that the end portion of the expandable seal is compressed between the internal clamp and the bore of the housing.

A rotary union includes a housing having a fluid inlet, a rotating machine component rotatably supported in the housing, a rotating seal member associated with the rotating machine component, a non-rotating seal member slidably and sealably disposed within the housing adjacent the rotating seal member, and an expandable seal disposed between and sealably engaging each of the non-rotating seal member and the housing. The expandable seal includes two end portions, one of the two end portions engaged to the non-rotating seal member and the other of the two end portions engaged to the housing, and an expandable portion disposed axially between the two end portions, the expandable portion having an axial length that varies based on a pressure of a hydraulic fluid that is present at the fluid inlet.

A rotary union includes a housing having a fluid inlet, a rotating machine component rotatably supported in the housing, a rotating seal member associated with the rotating machine component, a non-rotating seal member slidably and sealably disposed within the housing adjacent the rotating seal member, and an expandable seal disposed between and sealably engaging each of the non-rotating seal member and the housing. The expandable seal includes two end portions, one of the two end portions engaged to the non-rotating seal member and the other of the two end portions engaged to the housing, and an expandable portion disposed axially between the two end portions, the expandable portion having an axial length that varies based on a pressure of a hydraulic fluid that is present at the fluid inlet.

A fluid swivel for fluid transfer across a rotary interface includes inner annular and outer annular elements, located with their adjacent surfaces in close proximity to define a chamber between the adjacent surfaces. The swivel inner annular element has a conduit connected to an end of an incoming fluid line. The outer annular element is connected to outgoing product piping and has a primary duct for transport of fluid from the chamber to the product piping. The swivel includes an outer reinforcing annular wall arranged adjacent to the outer peripheral wall of the outer annular element. The outer reinforcing annular wall has two peripheral centering surface portions for contacting and/or registering with the outer peripheral wall of the outer annular element. The outer reinforcing annular wall further has a central peripheral opening extending along a portion of the periphery for allowing the primary duct to pass through.