Coating Process for the Coating of an Interior of a Pipework System as well as a Sub-Distributor and a Working Equipment for the Treatment of a Pipework System

Abstract

A coating process for the interior of a pipework system, which includes a subsystem having a first part-system and a second part-system coupled to the first part-system, wherein the part-system can be pressurized by a pressure difference via a first connection of the first part-system and via a second connection of the second part-system, and wherein the first connection of the second part-system is identical to the second connection of the first part-system and then the first connection of the second part-system is pressurized after the coating material leaves the second connection of the first part-system so that the first part-system and the second part-system is consecutively fed with the coating material.

1 - 12 . (canceled) 
     
     
         13 . Sub-distributor for a plumbing unit for a coating process for the coating of an interior of a pipework system with a coating material, for the coating with an epoxy resin, which pipework system includes a subsystem having a first part-system between a first connection of the first part-system and a second connection, and a second part-system being coupled to the first part-system, wherein the part-system can be pressurized by a pressure difference via a first connection of the second part-system and via a second connection of the second part-system, and wherein the first connection of the second part-system is the second connection of the first part-system and the coating process includes in a first process step the following steps in an arbitrary order:
 providing a first pressure fluid which first pressure fluid is under a coating over-pressure with respect to an ambient pressure,   providing a second pressure fluid which second pressure fluid is under a coating low-pressure with respect to the ambient pressure,   providing the coating material in a storage tank,   connecting a pressure outlet of the storage tank with the first connection of the first part-system,   connecting a pressure inlet of the storage tank with the first pressure fluid being under the coating over-pressure,   connecting the second connection of the first part-system with the second pressure fluid being under the coating low-pressure,   
       wherein in a second process step the first part-system is pressurized by a differential pressure by applying via the first connection of the first part-system the first pressure fluid being under the coating over-pressure and, at the same time, by applying via the second connection of the first part-system the second pressure fluid being under the coating low-pressure in such a way that a fluid-flow of the coating material and the first pressure fluid is established through the part-system between the first connection of the first part-system and the second connection of the first part-system in a direction from the first connection to the second connection in such a way, that an inner surface of the part-system is being coated by the coating material, and wherein the second connection of the first part-system is pressurized with the first pressure fluid being under the coating over-pressure after a leaving of the coating material out of the second connection of the first part-system at a checkpoint the leaving of the coating is detected, so that the first part-system and the second part-system is consecutively fed with the coating material via the second connection of the second part-system
 the sub-distributor comprising: 
 an over-pressure chamber having an over-pressure inlet for pressurizing the over-pressure chamber with a first working fluid provided under an over-pressure 
 a low-pressure chamber having a low-pressure inlet for pressurizing the low-pressure chamber with a second working fluid provided under a low-pressure 
 to a connection of a part-system in a sub-system, 
 an low-pressure outlet for providing the second working fluid to a connection of the part-system in the sub-system, 
 
       wherein a switching means is provided so that a pressure line being connected to the sub-distributor can be pressurized with the first working fluid and/or with the second working fluid. 
     
     
         14 . Sub-distributor in accordance with  claim 13 , wherein the over-pressure outlet and the low-pressure outlet are connected to each other with a common outlet adaptor, and/or wherein the over-pressure inlet and/or the low-pressure inlet and/or the over-pressure outlet and/or the low-pressure outlet can be separately closed off by means of a closing-off means, respectively, in particular by means of a mechanical cut-off cock, especially by means of an automatic valve, preferably by means of an electrically operable valve. 
     
     
         15 . Sub-distributor in accordance with  claim 13 , wherein a sensor means is provided at the sub-distributor for determining a temperature and/or a pressure, and/or a switch setting of a closing-off means and/or for determining another operating parameter of the sub-distributor and/or for determining an operating parameter of the first working fluid and/or of the second working fluid, and wherein the sub-distributor is designed and provided with electrical connections in such a way that a signal of the sensor means can be imported into a control system and/or wherein the closing-off means are controllable by the control system, in particular being automatically and/or program-controlled controllable. 
     
     
         16 . Working Equipment for a coating process for the coating of an interior of a pipework system with a coating material, for the coating with an epoxy resin, which pipework system includes a subsystem having a first part-system between a first connection of the first part-system and a second connection, and a second part-system being coupled to the first part-system, wherein the part-system can be pressurized by a pressure difference via a first connection of the second part-system and via a second connection of the second part-system, and wherein the first connection of the second part-system is the second connection of the first part-system and the coating process includes in a first process step the following steps in an arbitrary order:
 providing a first pressure fluid which first pressure fluid is under a coating over-pressure with respect to an ambient pressure,   providing a second pressure fluid which second pressure fluid is under a coating low-pressure with respect to the ambient pressure,   providing the coating material in a storage tank,   connecting a pressure outlet of the storage tank with the first connection of the first part-system,   connecting a pressure inlet of the storage tank with the first pressure fluid being under the coating over-pressure,   connecting the second connection of the first part-system with the second pressure fluid being under the coating low-pressure,   wherein in a second process step the first part-system is pressurized by a differential pressure by applying via the first connection of the first part-system the first pressure fluid being under the coating over-pressure and, at the same time, by applying via the second connection of the first part-system the second pressure fluid being under the coating low-pressure in such a way that a fluid-flow of the coating material and the first pressure fluid is established through the part-system between the first connection of the first part-system and the second connection of the first part-system in a direction from the first connection to the second connection in such a way, that an inner surface of the part-system is being coated by the coating material, and wherein the second connection of the first part-system is pressurized with the first pressure fluid being under the coating over-pressure after a leaving of the coating material out of the second connection of the first part-system at a checkpoint the leaving of the coating is detected, so that the first part-system and the second part-system is consecutively fed with the coating material via the second connection of the second part-system,   and wherein the working equipment includes a sub-distributor in accordance with  claim 13  for providing the first working fluid being provided under the over-pressure and the second working fluid provided under the low-pressure to a connection of a part-system in a sub-system   
     
     
         17 . Working equipment in accordance with  claim 16 , wherein a main-distributor, in particular a staircase-air-distributor being fluidly connected to the sub-distributor is provided for supplying the first working fluid and/or for supplying the second working fluid to the sub-distributor, and/or wherein for adjusting or controlling the over-pressure of the first working fluid, the main-distributor and/or the sub-distributor is supplied by an air control station in the operation state. 
     
     
         18 . Working equipment in accordance with  claim 16 , wherein a water separator and/or a cyclone filter for the separation of a fluid, in particular water, an oil, or an epoxy resin, and/or for the separation of particles, in particular of abrasive particles, especially of sand, and/or of another environment-friendly or not environment-friendly material, is provided, wherein the water separator and/or the cyclone filter is in particular provided between the vacuum machine and/or the main-distributor and/or the sub-distributor and/or wherein at the compressor and/or at the over-pressure reservoir and/or at the vacuum machine and/or at the low-pressure reservoir and/or at the air control station and/or at the water separator and/or at the cyclone filter and/or at the main-distributor and/or at the sub-distributor and/or at the detection means for detecting the leaving of the coating material out of the connection of the part-system and/or at a pipe of the pipework system, a sensor for monitoring an operation parameter, in particular for monitoring a pressure or a temperature, is provided, and/or wherein at the compressor and/or at the over-pressure reservoir and/or at the vacuum machine and/or at the low-pressure reservoir and/or at the air control station and/or at the water separator and/or at the cyclone filter and/or at the main-distributor and/or at the sub-distributor and/or at the detection means for detecting the leaving of the coating material out of the connection of the part-system and/or at the pipe of the pipework system, an automatically, preferably an electrically, operable valve is provided, so that a fluid-flow can be automatically generated or can be automatically cut off by the automatic valve, wherein preferably a control system, particularly comprising an electronic data processing installation, is provided, so that, at least partly, the working equipment is completely automatically and/or program-controlled operable.