| 摘要 |
#CMT# #/CMT# The method involves installing a shaft (2) against a wall of a conduit (100) at the level of a zone to be repaired. The shaft made of a semi-flexible material and two rigid straps (3) are used so that the shaft can be longitudinally folded and the strap can be contracted and expanded radially. The shaft at the folded state is brought till the zone and unfolded according to the thick cylindrical shape. The straps are inserted at a contracted state in respective ends of the shaft and are expanded for locking the ends against the wall of the conduit. #CMT# : #/CMT# An independent claim is also included for a device for the implementation of a duct sealing restoration method. #CMT#USE : #/CMT# Used for restoring sealing of a duct (claimed). #CMT#ADVANTAGE : #/CMT# The shaft made of the semi-flexible material can be longitudinally folded, so that the shaft can adapt a reduced section facilitating its insertion in the conduit of a limited diameter and in the passage of a zone of a limited section, thus facilitating the transportation in the conduit, till a zone to be repaired, by the operator in an easy manner. The shaft is unfolded to the thick cylindrical shape, thus permitting the operator to install the straps for making the shaft in a conduit in a reliable manner. The method avoids the usage of robot and polymerization in situ so that their implementation is inexpensive and is adapted to rehabilitation of the limited zone of a conduit. The straps have a reduced thickness so as to avoid a significant loss of the section of the conduit. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a conduit sealing restoration device. 2 : Shaft 3 : Straps 100 : Conduit 101 : Portion of conduit 102 : Pit #CMT#POLYMERS : #/CMT# The shaft is made of ethylene propylene diene terpolymer. |
