Pre-Installed Anti-Rotation Key For Threaded Connectors

摘要

A tubular member connection system includes a pin having a central axis, external pin threads, and an annular pin lip at a shoulder surface. A box has internal box threads and an annular box lip at an end surface of the box. The box threads are shaped to mate with the pin threads to releasably secure the pin to the box. A recess is formed in an outer diameter surface of the pin and extends in an axial direction from the pin lip. An anti-rotation key is located within the recess and has a row of teeth along an outer edge. A fastener retains the anti-rotation key in the recess. A circumferentially extending series of grooves on the box lip are sized to engage the teeth and resist a rotation of the pin relative to the box in an unscrewing direction when the pin is releasably secured to the box.

主权项

1. A tubular member connection system, comprising:
a pin having a central axis, external pin threads, and an annular pin lip at a shoulder surface of the pin; a box having internal box threads and an annular box lip at an end surface of the box, the box threads shaped to mate with the pin threads to releasably secure the pin to the box; a recess formed in an outer diameter surface of the pin, the recess extending in an axial direction from the pin lip; an anti-rotation key located within the recess and carried by the pin, the anti-rotation key having a row of teeth along an outer edge of the anti-rotation key; a fastener retaining the anti-rotation key in the recess; and a circumferentially extending series of grooves on the box lip of the box, the grooves sized to engage the teeth of the anti-rotation key and to resist a rotation of the pin relative to the box in an unscrewing direction when the pin is releasably secured to the box.