초록 ▼

Method and device for mounting a body in a conduit containing fluid. An installation unit is mounted on the fluid at that place, where the mounting of said body is desired, whereby sealing is established against the environment around an area, where a hole is going to be made in the surface of the c

Method and device for mounting a body in a conduit containing fluid. An installation unit is mounted on the fluid at that place, where the mounting of said body is desired, whereby sealing is established against the environment around an area, where a hole is going to be made in the surface of the conduit. The hole is made in the conduit in said area maintaining sealing against the environment. A body is inserted through the hole, so that the body will be placed in the conduit.

대표청구항 ▼

A method for mounting an expandable blocking body (21) in a conduit (4) containing fluid, comprising the steps of releasably mounting an installation unit (1) having a channel (13) with a first sealing means (39) mounted therein onto the conduit (4) at a place where mounting of said body is desired,

A method for mounting an expandable blocking body (21) in a conduit (4) containing fluid, comprising the steps of releasably mounting an installation unit (1) having a channel (13) with a first sealing means (39) mounted therein onto the conduit (4) at a place where mounting of said body is desired, establishing during said mounting a sealing by a second sealing means (11) between said conduit and said installation unit against the environment around an area where a hole (47) in the surface of the conduit will be made, inserting a hole making device (27) through said first sealing means and into said channel of said installation unit having a diameter such that it is in sealing contact with said first sealing means (39) in order to keep said channel sealed against the environment when said device is situated in said channel, providing a third sealing means in said unit between said first and second sealing means in the form of a resilient reclosable valve means (40,41), moving said hole making device so that it pushes said reclosable valve means (40) open in a direction towards said conduit and making said hole (47) in said conduit in said area while still maintaining sealing against the environment, thereby establishing communication between said hole and said channel, moving said device out of said hole and said reclosable valve means whereby said reclosable valve means (40) closes before said device passes said first sealing means by means of the resiliency thereof and/or the pressure of the fluid in said conduit so that leakage is avoided, inserting a valve (32) for connection to a pressure medium through said first sealing means and having a body with a diameter substantially equal to the diameter of said hole making device and an expandable body (21) at an end thereof into said channel and pushing said reclosable valve means open again and inserting said expandable body through said hole, so that said expandable body is placed in said conduit at the place where the conduit is to be blocked, while still maintaining sealing against the environment by said first and second sealing means, expanding said expandable body to a cross-sectional area and shape adapted to the inner cross-sectional area of the conduit by operating said valve, whereby the conduit is blocked, after completing any necessary work on the conduit, reducing the dimension of said expandable body to such a shape that it can be taken out through said hole, and removing said valve (32) and expandable body (21) from said hole and through said reclosable valve means (40,41) so that the latter can again close before said valve (32) passes said first sealing means (39), whereby sealing is still maintained against the environment and leakage is still avoided.