Die Reduction Machine, Reducing Die, and Method of Installation for a Pipe Liner

摘要

Systems and methods for reducing the diameter of a pipe liner to repair a damaged pipe, including means of reducing the pulling force required. This is done through use of a multi-section reduction die using a two-step reduction and pushing means for advancing the non-reduced liner portion into the die.

主权项

1. A die reduction machine comprising:
a first reduction section generally in the configuration of an annular conical frustum and disposed upon a die reduction frame, said first reduction section comprising:
a first entrance side having a first entrance diameter;a first exit side having a first exit diameter; and a second reduction section generally in the configuration of an annular conical frustum and disposed upon said die reduction frame generally coaxially with said first reduction section, said second reduction section comprising:
a second entrance side having a second entrance diameter;a second exit side having a second exit diameter; wherein said second reduction section is disposed such that a pipe liner exiting said first reduction section at said first exit side enters said second reduction section at said second entrance side.