Pipe joint structure
AssigneeJ. M. Voith GmbH
InventorsTheodor Merkle, Bernhard Hausenblas, Hermann Schweickert, Dieter Wengert
Life of this patent
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Abstract
An arrangement of pipes, as in a riser line for use as in the art of shelf drilling, is shown as having a plurality of pipes connected in end-to-end fashion with a joint operatively interconnecting a pair of adjacent pipes and allowing relative pivotal movement of one of such pair of pipes with respect to the next adjacent of such pair of pipes about an axis extending transversely of that pair of pipes, the axis of pivotal movement of each joint being substantially at right angles to the axis of pivotal movement of each adjacent or succeeding spaced joint.
Claims13
A jointed pipeline, comprising a succession of at least first second and third pipe members, first pivotal joint means operatively interconnecting one end of said first pipe member to a first end of said second pipe member, second pivotal joint means operatively interconnecting, a second end of said second pipe member to a first end of said third pipe member, said first pivotal joint means defining a first fixed pivotal axis extending transversely of said first and second pipe members for allowing said first and second pipe members to pivotally rotate thereabout relative to each other, said second pivotal joint means defining a second fixed pivotal axis extending transversely of said second and third pipe members for allowing said second and third pipe members to pivotally rotate thereabout relative to each other, said first and second pivotal axes being respectively contained in first and second planes which are substantially normal to each other, and stop means, said stop means being effective to limit the relative pivotal movement of said first pipe member relative to said second pipe member, said stop means comprising abutment type shear means, said shear means being effective to become sheared and further ineffective as abutment means when a force applied thereagainst exceeds a predetermined magnitude which magnitude is less than that required to shear said first pivotal joint means.
A jointed pipeline, comprising a succession of at least first second and third pipe members, first pivotal joint means operatively interconnecting one end of said first pipe member to a first end of said second pipe member, second pivotal joint means operatively interconnecting a second end of said second pipe member to a first end of said third pipe member, said first pivotal joint means defining a first fixed pivotal axis extending transversely of said first and second pipe members for allowing said first and second pipe members to pivotally rotate thereabout relative to each other, said second pivotal joint means defining a second fixed pivotal axis extending transversely of said second and third pipe members for allowing said second and third pipe members to pivotally rotate thereabout relative to each other, said first and second pivotal axes being respectively contained in first and second planes which are substantially normal to each other, said first pivotal joint means comprising first and second joint journals respectively situated on and carried by said first pipe member opposite to each other and in alignment with each other, said second pipe comprising first and second joint plate portions, said first and second joint plate portions being respectively pivotally secured to said first and second joint journals, and arresting means effective for preventing relative pivotal movement of said first and second pipe members, said arresting means comprising pin means at times operatively engageable with both said first and second pipe members, and toggle means operatively connected to said pin means, said toggle means being effective to move said pin means into and out of said operative engagement with both of said first and second pipe members.
A jointed pipeline, comprising a succession of at least first and second pipe members, pivotal joint means operatively interconnecting one end of said first pipe member to a first end of said second pipe member, said pivotal joint means defining a fixed pivotal axis extending transversely of said first and second pipe members for allowing said first and second pipe members to pivotally rotate thereabout relative to each other, and stop means, said stop means comprising first and second stop portions respectively carried by said first and second pipe members as to be respectively rotatable with said first and second pipe members and relatively rotatable with respect to each other as said first and second pipe members experience relative pivotal rotation about said fixed pivotal axis, said first and second stop portions being effective upon being rotatably brought into operative abuting engagement with each other to limit the relative pivotal movement of said first pipe member relative to said second pipe member about said fixed pivotal axis, said first stop portion comprising abutment type shear means, said shear means being of lesser shear strength than said second stop portion as to thereby be effective to become sheared by said second stop portion and further ineffective as a stop portion when a force resulting from the relative pivotal movement of said first pipe member relative to said second pipe member and applied to said shear means by said second stop portion exceeds a predetermined magnitude.
A jointed pipeline, comprising a succession of at least first and second pipe members, pivotal joint means operatively interconnecting one end of said first pipe member to a first end of said second pipe member, said pivotal joint means defining a fixed pivotal axis extending transversely of said first and second pipe members for allowing said first and second pipe members to pivotally rotate thereabout relative to each other, and arresting means effective for preventing relative pivotal movement of said first and second pipe members, said arresting means comprising pin means at times operatively engageable with both said first and second pipe members, and toggle means operatively connected to said pin means, said toggle means being effective to move said pin means into and out of said operative engagement with both of said first and second pipe members.
Dependencies are inferred from the claim text.