| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide branching structure capable of improving workability at the time of installation and removal of a coupler member and carrying out this work without causing leakage of gas in case of installing or removing the coupler member by using a pedestal. SOLUTION: A pedestal 1 is formed in thickness not to interfere with a branch pipe installing part of a coupler member T at the time when the coupler member T fastened on a main branch pipe is fastened, an installing part 1A1 of a bag for working and a seating member free to adhere to an outer peripheral surface of the main branch pipe are charged in a coupler member insertion part 1A, belt members 6, 6' are formed so that one of them has length to be positioned in the neighbourhood of the pedestal 1 and the other has length to reach the other end of the one by being wound around the outer peripheral surface of the main branch pipe, the pedestals 1 are connected to each other in a state of clamping an outer peripheral surface of the coupler member fastened on the main branch pipe, and the bag for working is installed on a branching part of the main branch pipe by locking the belt members 6, 6'.</p> |
