DE102020003772A1 - coating process - Google Patents
coating process Download PDFInfo
- Publication number
- DE102020003772A1 DE102020003772A1 DE102020003772.0A DE102020003772A DE102020003772A1 DE 102020003772 A1 DE102020003772 A1 DE 102020003772A1 DE 102020003772 A DE102020003772 A DE 102020003772A DE 102020003772 A1 DE102020003772 A1 DE 102020003772A1
- Authority
- DE
- Germany
- Prior art keywords
- pipe
- coating
- impact
- deflection body
- coating agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 27
- 238000005422 blasting Methods 0.000 claims abstract description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
- B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
- B05B1/265—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being symmetrically deflected about the axis of the nozzle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
- B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Die Erfindung betrifft ein Beschichtungsverfahren zur Beschichtung von Innenrohrflächen von Rohren jeder Bauform mit Hilfe eines Prall- bzw. Umlenkkörpers, wobei der Prall- bzw. Umlenkkörper mit einer definierten Geschwindigkeit mittels eines Haltekabels über einen an das Rohrende angepressten Anschlussadapter, der eine dichte Verbindung zu dem Rohrende herstellt, in das zu reinigende Rohr geführt und mittels eines gasförmigen Strahlmediums, dem ein Strahlmittel zugesetzt ist, durch das Rohr gepresst wird.The invention relates to a coating process for coating inner pipe surfaces of pipes of any design using an impact or deflection body, with the impact or deflection body moving at a defined speed by means of a holding cable via a connection adapter pressed onto the end of the pipe, which forms a tight connection to the The end of the pipe is produced, guided into the pipe to be cleaned and pressed through the pipe by means of a gaseous blasting medium to which a blasting agent is added.
Description
Aus
Ziel und Zweck der Erfindung ist ein Verfahren und eine Vorrichtung zur Beschichtung von Innenrohrflächen ab 3,00mm i.d.bis zu 300mm i.d.The aim and purpose of the invention is a method and a device for coating inner pipe surfaces from 3.00 mm i.d. up to 300 mm i.d.
Dazu wird ein an einem kleindimensionierten Haltekabel befestigter Umleitungs- bzw. Prallkörper in das zu beschichtende Rohr über einen Anschlussadapter eingeführt. Der Prallkörper kann so dimensioniert sein, dass er für die Beschichtung kleindimensionierter Rohre ab 6mm auch bogengängig ist für Bögen von 90° - 180°. Dieser Adapter wird mit einem unter Druck stehenden Gas, vorzugsweise Druckluft, bis an den Endpunkt des Rohres gepresst. Dann wird dem Gas-, vorzugsweise Druckluftstrahl in einer geeigneten Dosierung ein Beschichtungsmittel zugesetzt, dass auch aus mehreren Komponenten bestehen kann. Gleichzeitig wird das Haltekabel, bzw. ein dünnes Drahtseil, über eine gesteuerte Winde in einer definierten Geschwindigkeit bis in den Anschlussadapter zurückgezogen. In einer anderen Variante wird der Prall- bzw. Umlenkkörper mit dem unter Druck stehendem Gas, vorzugsweise Druckluft, und dem Beschichtungsmittel bis an das Ende des Rohres gepresst. Bei schnellhärtenden Beschichtungsmitteln kann das Haltekabel dann ohne Beschädigungen der beschichteten Flächen zurückgezogen werden. Bei Erfordernis kann der Prall- bzw. Umlenkkörper zuvor demontiert werden. Diese Geschwindigkeit wie auch die eindosierte Menge des Beschichtungsmittels und die Ausbildung des Umlenk- bzw. Prallkörpers bestimmen die Schichtdicke der Beschichtung. Der Umlenk- bzw. Prallkörper kann frontseitig als Scheibe oder Zylinder ausgebildet sein, kann jedoch auch eine Abwinkelung in oder auch entgegen der Strömungsrichtung aufweisen. Die Ausbildung des Umlenk- bzw. Prallkörpers bestimmt den Aufschlagwinkel auf die Rohrinnenflächen und damit die Geschwindigkeit und Kraft der Aufschlagwirkung. In einer anderen Variante befindet sich stromaufwärts des Umlenk- bzw. Prallkörper ein Führungsteil, das fest oder beweglich mit dem Prall- bzw. Umlenkköper verbunden ist. Dieses Führungsteil liegt dicht an den Innenrohrwänden an, wobei das Führungsteil mittig eine Öffnung aufweist, durch die der Gasstrahl mit dem Beschichtungsmittel mittig konzentriert auf den Prall- bzw. Umlenkkörper trifft.For this purpose, a deflection or impact body attached to a small-sized holding cable is inserted into the pipe to be coated via a connection adapter. The impact body can be dimensioned in such a way that it can also be used in bends of 90° - 180° for the coating of small-sized pipes from 6mm. This adapter is pressed with a pressurized gas, preferably compressed air, up to the end point of the pipe. A suitable dosage of a coating agent, which can also consist of several components, is then added to the gas jet, preferably compressed air jet. At the same time, the retaining cable or a thin wire rope is pulled back into the connection adapter at a defined speed using a controlled winch. In another variant, the impact or deflection body is pressed with the pressurized gas, preferably compressed air, and the coating agent up to the end of the pipe. In the case of fast-curing coating agents, the holding cable can then be withdrawn without damaging the coated surfaces. If necessary, the impact or deflection body can be dismantled beforehand. This speed as well as the metered quantity of the coating agent and the formation of the deflection or impact body determine the layer thickness of the coating. The deflection or impact body can be designed as a disk or cylinder on the front side, but can also be bent in or against the direction of flow. The design of the deflection or impact body determines the angle of impact on the inner surfaces of the pipe and thus the speed and force of the impact effect. In another variant, upstream of the deflection or impact body, there is a guide part that is connected in a fixed or movable manner to the impact or deflection body. This guide part lies tightly against the inner pipe walls, with the guide part having an opening in the middle, through which the gas jet with the coating agent hits the impact or deflection body in a concentrated manner in the middle.
Der Prall- bzw. Umlenkkörper wird bei geringeren Rohrquerschnitten allein durch die Strömung des Strahlmediums in der Rohrmitte gehalten, sodass das eingesetzte Beschichtungsmittel mittel die Rohrinnenwand gleichmäßig trifft. Bei größeren Rohrquerschnitten müssen entsprechend große Prall- bzw. Umlenkkörper eingesetzt werden die ein entsprechend größeres Gewicht aufweisen. Um diese größeren und schweren Prall- bzw. Umlenkkörper in der Rohrmitte zu halten, sind in diesem Fall Abstandspunkte oder Abstandsrippen am Prall- bzw. Umlenkkörper angebracht, die einen gleichmäßig dimensionierten Ringspalt zwischen Umlenkkörper und Rohrinnenwand herstellen. Falls die Fläche des Ringspaltes kleiner ist als der Querschnitt der Zuführleitung(en) für Strahlmedium und Strahlmittel, entsteht stromaufwärts des Umlenkkörpers ein Gegendruck. Damit das Strahlmittel gleichmäßig dem Umlenkkörper zugeführt und durch den Ringspalt hindurch geführt wird, ist eine Geschwindigkeit von Strahlmedium/ Beschichtungsmittel von mindestens 16 m per Sekunde erforderlich. Das Haltekabel für den Umlenkkörper wird durch den Anschlussadapter oder seitlich des Anschlussadapters in das zu reinigende Rohr geführt.In the case of smaller pipe cross-sections, the impact or deflection body is held in the middle of the pipe solely by the flow of the blasting medium, so that the coating agent used hits the inner wall of the pipe evenly. In the case of larger pipe cross-sections, correspondingly large impact or deflection bodies must be used, which have a correspondingly greater weight. In order to keep these larger and heavier impact or deflection bodies in the middle of the pipe, in this case spacer points or spacer ribs are attached to the impact or deflection body, which create an evenly dimensioned annular gap between the deflection body and the inner wall of the pipe. If the area of the annular gap is smaller than the cross-section of the supply line(s) for the blasting medium and blasting agent, a counter-pressure is created upstream of the deflection body. A speed of at least 16 m per second is required for the blasting medium/coating medium so that the blasting medium is fed evenly to the deflection body and guided through the annular gap. The retaining cable for the deflection body is routed through the connection adapter or to the side of the connection adapter into the pipe to be cleaned.
Bei niedrig viskosen Beschichtungsmitteln wie z.B. anorganischen, hybriden oder organischen Polymersystemen kann die Beschichtung jeweils nur in geringen Schichtdicken, wie z.B. 0,1-100 µm aufgebracht werden. Für manche Einsatzzwecke wie z.B. gegen Wasserstoff diffusionsstabile Beschichtungen für Rohre, sind jedoch stärkere Schichtdicken erwünscht. In diesem Zweck ist es erforderlich, das Verfahren zu wiederholen und die Beschichtung Layer by Layer aufzutragen. Dazu muss jeweils die Trocknung der vorherigen aufgebrachten Schicht abgewartet werden. Zur Beschleunigung der Trocknung kann das Rohr erwärmt werden. Auch eine konstante Drehung des Rohres während der Trocknungszeit beschleunigt den Trocknungsvorgang. Zusätzlich wird durch die Drehung eine homogenere Schichtdickenverteilung erhalten, da sich bei einem ruhenden Rohr die Schicht an der Rohrunterseite stärker ausbilden kann.With low-viscosity coating materials such as inorganic, hybrid or organic polymer systems, the coating can only be applied in small layer thicknesses, such as 0.1-100 µm. However, thicker layers are required for some applications, such as coatings for pipes that are resistant to hydrogen diffusion. In this purpose it is necessary to repeat the procedure and apply the coating layer by layer. To do this, it is necessary to wait for the previous applied layer to dry. The tube can be heated to accelerate drying. Constant rotation of the pipe during the drying time also speeds up the drying process. In addition, the rotation results in a more homogeneous layer thickness distribution, since the layer on the underside of the tube can develop more strongly when the tube is stationary.
BezugszeichenlisteReference List
- 11
- Innenrohrflächeninner tube surfaces
- 22
- Rohrpipe
- 33
- Umlenkkörper / der PrallDeflection body / the impact
- 44
- Rohrendepipe end
- 55
- Dosiereinheit für BeschichtungsmittelDosing unit for coating agent
- 66
- Steuerbare PressvorrichtungControllable pressing device
- 77
- Dichtflächesealing surface
- 88th
- Haltekabelretaining cable
- 99
- Bewegungseinheit für HaltekabelMovement unit for holding cable
- 1010
- Anschlussadapterconnection adapter
- 1111
- Förderpumpefeed pump
- 1212
- Druckluftzuführungcompressed air supply
- 1313
- Absaugung mit FiltereinheitSuction with filter unit
- 1414
- Auffangvorrichtungcollection device
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDED IN DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturPatent Literature Cited
- DE 102017009372 [0001]DE 102017009372 [0001]
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020003772.0A DE102020003772A1 (en) | 2020-06-24 | 2020-06-24 | coating process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020003772.0A DE102020003772A1 (en) | 2020-06-24 | 2020-06-24 | coating process |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102020003772A1 true DE102020003772A1 (en) | 2022-01-20 |
Family
ID=79020644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102020003772.0A Pending DE102020003772A1 (en) | 2020-06-24 | 2020-06-24 | coating process |
Country Status (1)
Country | Link |
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DE (1) | DE102020003772A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59142873A (en) | 1983-02-02 | 1984-08-16 | Hakko Co Ltd | Coating method on inside surface of pipe |
DE3528446C1 (en) | 1985-08-08 | 1987-03-05 | August Nobis | Device for the internal coating of pipes |
EP0476295A1 (en) | 1990-08-17 | 1992-03-25 | Gerigk, Wolfgang | Device for lining a pipeline with an internal coating |
US5230842A (en) | 1989-02-21 | 1993-07-27 | Munde Bruce A | Interior pipeline coating process |
US7717056B2 (en) | 2004-06-18 | 2010-05-18 | Plastocor, Inc. | System and method for coating tubes |
DE102017009372A1 (en) | 2017-10-10 | 2019-04-11 | Kipp Umwelttechnik Gmbh | Method and device for internal coating of pipes, pipelines |
-
2020
- 2020-06-24 DE DE102020003772.0A patent/DE102020003772A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59142873A (en) | 1983-02-02 | 1984-08-16 | Hakko Co Ltd | Coating method on inside surface of pipe |
DE3528446C1 (en) | 1985-08-08 | 1987-03-05 | August Nobis | Device for the internal coating of pipes |
US5230842A (en) | 1989-02-21 | 1993-07-27 | Munde Bruce A | Interior pipeline coating process |
EP0476295A1 (en) | 1990-08-17 | 1992-03-25 | Gerigk, Wolfgang | Device for lining a pipeline with an internal coating |
US7717056B2 (en) | 2004-06-18 | 2010-05-18 | Plastocor, Inc. | System and method for coating tubes |
DE102017009372A1 (en) | 2017-10-10 | 2019-04-11 | Kipp Umwelttechnik Gmbh | Method and device for internal coating of pipes, pipelines |
Non-Patent Citations (1)
Title |
---|
JP S59 - 142 873 A (Original und Maschinenübersetzung) |
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