Branch flow path blocking device and branch flow path blocking method

摘要

Problem to be solved: to provide a compact branching channel blocking device and a branch flow channel blocking method with high working efficiency.A branch channel blocking device X for blocking a flow passage of a branch pipe branched from a fluid tube;A locking mechanism 4 to be engaged with a connection portion between a branch pipe part and a fluid tube andA seal mechanism 5 having an elastic member 5C capable of blocking the flow passage of the branch pipe portion andThe engaging mechanism 4 and the shaft member 7 supporting the seal mechanism 5 andEquipped withSeal mechanismThe elastic member 5C has a fluid inflow portion 51 for flowing fluid into the inside of the elastic memberWhen the fluid flows from the fluid inflow portion 51, the elastic member 5C is expanded to block the flow passage of the branch pipe portion.Diagram