Working process for the treatment of an interior of a pipework system as well as a subdistributor and a working equipment for the treatment of a pipework system

Abstract

The invention relates to a working process for the treatment of an interior of a pipework system (1), which pipework system (1) includes a part-system (2, 21, 22) between a first connection (3, 31, 32) and a second connection (4, 41, 42), wherein the working process includes the following working steps: Providing a first working fluid (5, 51, 52, 53) being under an over-pressure (P+, P+1, P+2, P+3) with respect to an ambient pressure (P0). Providing a second working fluid (6, 61, 62, 63) being under a low-pressure (P−, P−1, P−2, P−3) with respect to the ambient pressure (P0). Thereby, the part-system (2, 21, 22) is pressurized between the first connection (3, 31, 32) and the second connection (4, 41, 42) with the first working fluid (5, 51, 52, 53) provided under the over-pressure (P+, P+1, P+2, P+3) and the second working fluid (6, 61, 62, 63) provided under the low-pressure (P−, P−1, P−2, P−3) at the same time in such a way, that a fluid-flow (7) of the first working fluid (5, 51, 52, 53) provided under the over-pressure (P+, P+1, P+2, P+3) is established through the part-system (2, 21, 22) between the first connection (3, 31, 32) of the part-system (2) and the second connection (4, 41, 42) of the part-system (2, 21, 22) in a direction to the second working fluid (6, 61, 62, 63) provided under the low-pressure (P−, P−1, P−2, P−3). According to the invention, in at least one working step the direction of the fluid-flow (7) through the part-system (2, 21, 22) between the first connection (3, 31, 32) and the second connection (4, 41, 42) is reversed at least once. Furthermore, the invention relates to a sub-distributor (81) for carrying out the process in accordance with the invention as well as a working equipment comprising a sub-distributor (81) according to the invention.

Dependencies are inferred from the claim text.