DEVICE FOR SEALING AND INSULATION OF PIPELINES

摘要

FIELD: machine building. ^ SUBSTANCE: pipeline tool for use in pipeline comprises case with inner channel for flow passage, swelling element arranged around tool case, and temporary seal arranged in channel for flow passage. Pipeline tool may additionally comprise tracking device fixed to case and comprising mechanical fixator or transmitter, which transmits a signal that might be tracked. ^ EFFECT: reliability improvement. ^ 49 cl