Welding system
AssigneeSaipem S.P.A.
InventorsRenato Bonelli, Teresio Signaroldi, Andrea Provesi
Life of this patent
Estimating the term…
Abstract
A welding bug (1) comprising a welding torch (3) for welding in a groove (19). The welding torch (3) is mounted for rotational movement about an axis (21) that is substantially horizontal, relative to the welding bug, (typically tangential to a pipe during use) so that the torch is moveable, during use of the welding bug (1) when arranged to enable the torch to weld in a groove, between (i) an operating position, and (ii) a disengaged position in which the welding torch is positioned away from the groove (19). The welding bug may be less cumbersome and more compact than some known arrangements.
Claims11
A welding bug, comprising:
- a control arm and a welding torch arranged on the control arm, the welding torch being suitable for welding in a groove at a joint between an end of a first pipe and an end of an adjacent second pipe, and
- a pipe clamp for mounting to circumferentially extend around a longitudinal axis of the first pipe,
- wherein the welding bug is mounted on the pipe clamp for circumferential movement around the first pipe, and wherein the control arm is mounted on the welding bug for rotational movement about an axis that is substantially horizontal, relative to the welding bug, the axis being orientated perpendicular to the longitudinal axis of the pipes at the joint, and the axis being set back from the torch in the longitudinal direction, and wherein
- the welding bug is arranged such that the torch is moveable about said axis, during use of the welding bug when arranged to enable the torch to weld in a groove, between (i) an operating position in which the welding torch is positioned in the groove, and (ii) a disengaged position in which the welding torch is positioned out of the groove after the welding bug has completed a weld pass.
A welding bug for mounting on a pipe, the welding bug comprising a control arm and a welding torch arranged on the control arm, the welding torch being suitable for welding in a groove at a joint between an end of a first pipe and an end of an adjacent second pipe, and
- a pipe clamp for mounting to circumferentially extend around a longitudinal axis of the first pipe, wherein the welding bug is mounted on the pipe clamp for circumferential movement around the longitudinal axis of the first pipe, and
- wherein the control arm is mounted on the welding bug for rotational movement about an axis on the welding bug, the axis being substantially horizontal, relative to the welding bug, the axis being orientated perpendicular to the longitudinal axis of the pipe at a location at which the welding bug is to be mounted, and the axis being set back from the torch in the longitudinal direction, and wherein
- the torch is moveable about the axis, between (i) an operating position in which the torch is positioned in the groove, and (ii) a disengaged position in which the welding torch is positioned out of the groove to allow passage of a second welding torch along the groove in the vicinity of the welding bug.
Dependencies are inferred from the claim text.