High pressure pipe swivel assembly
AssigneeLegacy Forward Innovations LLC
InventorsPaul Myrick, Logan Kennedy
Life of this patent
Estimating the term…
Abstract
A pipe swivel assembly is provided including a body, an outer bearing, a stem, an inner bearing, and a locking collar, all annular about a central axis. The body includes a threaded socket and tapered throat. The stem includes a tapered nose and barrel section with a radial flange. The inner bearing is received in the socket and is trapped by the flange when the nose is at a predetermined distance from the throat. The outer bearing is trapped by the locking collar against the flange when the collar barrel is screwed into the threaded socket. A seal extends between an angled seat on the nose and an angled sealing surface of the throat. The stem can rotate around the central axis relative to the body without breaking the fluid tight seal between the stem and the body.
Claims13
A pipe swivel assembly for joining two pipes, wherein a first pipe can be connected to a first end of the swivel assembly, a second pipe can be connected to a second end of the swivel assembly, and a high pressure fluid can be carried through the swivel assembly from the first pipe to the second pipe, the swivel assembly comprising:
- a body including an annular socket section with internal threads defining a central axis along the axial direction, an annular neck section having a smaller diameter than the socket section and extending axially away from the socket section to a first end, and an annular transition section extending between the socket section and the neck section to define a tapering throat having an internal sealing surface;
- an inner bearing including a plurality of ball bearings configured in an annular arrangement, the inner bearing being disposed within the socket section contacting an axial face of the body adjacent to the throat;
- a stem including an annular nose section having a tapering external surface, an annular stem barrel section extending axially away from the nose section to a second end, and a stem flange extending radially out from the stem barrel section adjacent the nose section;
- wherein the nose section is positioned within the throat of the body at a predetermined distance from the internal sealing surface;
- and
- wherein an axially-inner face of stem flange contacts the inner bearing;
- an outer bearing including a plurality of ball bearings configured in an annular arrangement, the outer bearing being disposed around the stem barrel section and contacting an axially-outer face of the stem flange;
- a locking collar including an annular collar barrel section with external threads and a collar flange extending radially outward from the collar barrel section;
- wherein the collar barrel section is positioned around the stem barrel section of the stem;
- wherein the external threads of the collar barrel section are threadingly engaged with the internal threads of the socket section of the body;
- wherein an axial end of the collar barrel section contacts the outer bearing;
- and
- a primary seal extending the predetermined distance between the tapering nose section of the stem and the tapering internal sealing surface of the body;
- whereby the stem can rotate around the central axis relative to the body without breaking the fluid tight seal between the stem and the body.
A pipe swivel assembly for joining two pipes, wherein a first pipe can be connected to a first end of the swivel assembly, a second pipe can be connected to a second end of the swivel assembly, and a high pressure fluid can be carried through the swivel assembly from the first pipe to the second pipe, the swivel assembly comprising:
- a body including an annular socket section with internal threads defining a central axis along the axial direction, an annular neck section having a smaller diameter than the socket section and extending axially away from the socket section to a first end, and an annular transition section extending between the socket section and the neck section to define a tapering throat having an internal sealing surface;
- an inner bearing including a plurality of ball bearings configured in an annular arrangement, the inner bearing being disposed within the socket section contacting an axial face of the body adjacent to the throat;
- a stem including an annular nose section having a tapering external surface, an annular stem barrel section extending axially away from the nose section to a second end, and a stem flange extending radially out from the stem barrel section adjacent the nose section;
- wherein the nose section includes an annular first locating groove formed in the radially-outward surface of the tapered exterior surface, the first locating groove having:
- a first radial depth;
- a first axial width;
- a first bottom end profile;
- and
- wherein the nose section is positioned within the throat of the body at a predetermined distance from the internal sealing surface;
- and
- wherein an axially-inner face of stem flange contacts the inner bearing;
- an outer bearing including a plurality of ball bearings configured in an annular arrangement, the outer bearing being disposed around the stem barrel section and contacting an axially-outer face of the stem flange;
- a locking collar including an annular collar barrel section with external threads and a collar flange extending radially outward from the collar barrel section;
- wherein the collar barrel section is positioned around the stem barrel section of the stem;
- wherein the external threads of the collar barrel section are threadingly engaged with the internal threads of the socket section of the body;
- wherein an axial end of the collar barrel section contacts the outer bearing;
- and
- a primary seal mounted on the tapering nose section of the stem, the primary seal including:
- a seal body positioned on radially-outward surface of the nose and extending radially the predetermined distance to the tapering internal sealing surface of the body;
- a first annular rib extending radially inward from the seal body at a first axial position relative to the front edge of the seal, the first rib having:
- a first radial length;
- a first axial width;
- a first bottom end profile;
- and
- wherein the first annular rib is received in the first locating groove of the nose, thereby holding the seal body in position on the nose;
- whereby the stem can rotate around the central axis relative to the body without breaking the fluid tight seal between the stem and the body.
Dependencies are inferred from the claim text.