Reinstatement of an existing connection in a lined conduit
View Patent ↗A process and apparatus for internally reinstating a connection in a lined conduit is provided. The connection may be a branch pipe or corporation stop that may or may not protrude into the conduit. It may be milled prior to lining. The process includes the step of locating the connection visually or with a probe, such as all eddy current probe. forming at an opening in the lining at the connection and then installing a T-nut with a sealing gasket facing the liner to hold the liner in place and form a seal between the T-nut and liner and the connection. The apparatus includes a motor coupled to a turntable with drive to install the T-nut and a supply of T-nuts mounted on a slide for loading the T-nuts onto the drive for installation of the T-nuts without having to remove the assembly between each installation.
1. An assembly for reinstating a connection in a conduit having an internal lining, comprising
an elongated frame having a first end and a second end;
a camera located at one end and a robot assembly at the other end of the frame;
a motor mounted on the frame;
a cylinder with a cartridge slide coupled to a cartridge motor, the cartridge slide holding a plurality of T-nuts for installation into a connection in the conduit;
the robot assembly including a cylinder having an arm that can be rotated and extended and retracted selectively;
a lift rack mounted to the arm; and
a turntable including a drive element mounted on the lift rack and operatively connected to the motor,
whereby the drive element can be selectively positioned to engage a fitting stored on the cartridge slide and position the fitting for installation into a connection in the conduit.
2. The assembly of claim 1 , further including a cutting element on the turntable for cutting at least one opening in the liner for inserting a T-nut.
3. The assembly of claim 1 , further including a remote sensing mechanism mounted on the frame and biased towards a conduit wall.
4. The assembly of claim 3 , wherein the remote sensing mechanism is an eddy current detector.