COMBINED PIPE AND CONCRETE APPLICATION DEVICE Russian patent published in 2011 - IPC F16L9/08 

FIELD: construction.

SUBSTANCE: combined pipe comprises a central pipe, a shell, a circular space with centring skids, formed between the pipe and the shell, plugs with holes, covering the circular space, at that at least one of plugs has several holes, a disk gate to close holes in the plug by its rotation after the circular space has been filled with the concrete mortar. The device of concrete application onto a pipe arranged horizontally or in an inclined manner, comprises a circular form that embraces the pipe and is made of internal, external and two side walls, one of which, facing the plug with the disk gate, has holes; the walls form at least one cavity, having a nozzle for connection of a concrete pipeline, at the same time the device has facilities to press the circular form to the plug, which are made of a bush with a flange fixed at the pipe end and jacks installed on the flange, and facilities of the disk gate rotation.

EFFECT: increased efficiency of combined pipe circular space concrete filling process and reduced pressure of concrete mortar injection.

4 cl, 6 dwg