| 摘要 |
A system (1100) for hot tapping a plurality of nested pipes, including at least one interior pipe (60) contained within the bore of an exterior pipe (50), is disclosed. The system includes a clamp, having at least one plate (200) with a plate opening, detachably connected to the exterior pipe, a hot tapping tool (1300), having a hot tapping tip (1400), capable of penetrating a selected one or more of the pipes. The hot tapping tip has a sealing surface for the tip to form a fluid tight seal against the exterior surface of a pipe when the sealing surface of the hot tapping tip is in contact with the exterior surface of a pipe. The clamp includes a swivelling connection (294) supported next to the plate opening for supporting the hot tapping tip (see also figures 39 & 40). The hot tapping tip is extendable through the plate opening. The hot tapping tip can be articulated angularly relative to the plate at a position next to the plate opening. This allows the operator some flexibility when lining up the hot tapping tool on interior pipes, especially where interior pipes are offset by a difference in angle. A method of hot tapping a plurality of nested pipes is also disclosed. |
