PL418931A1 - Method for joining pipes internally coated with a plastic lining, preferably made from polyethylene - Google Patents
Method for joining pipes internally coated with a plastic lining, preferably made from polyethyleneInfo
- Publication number
- PL418931A1 PL418931A1 PL418931A PL41893116A PL418931A1 PL 418931 A1 PL418931 A1 PL 418931A1 PL 418931 A PL418931 A PL 418931A PL 41893116 A PL41893116 A PL 41893116A PL 418931 A1 PL418931 A1 PL 418931A1
- Authority
- PL
- Poland
- Prior art keywords
- welding
- plastic
- coating
- internally coated
- polyethylene
- Prior art date
Links
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Wynalazek dotyczy sposobu łączenia rur wewnętrznie powlekanych powłoką z tworzywa, zwłaszcza z polietylenu, wykorzystywanego przy budowie rurociągów przenoszących ciecze agresywne chemicznie. Sposób według wynalazku polega na tym, że przed spawaniem obejmy (8) na płaszczach łączonych rur (2a, 2b) na obwodzie każdej krawędzi (8a, 8b) trasuje się zasadniczo równe odcinki obwodowe, po czym po sczepieniu spoinami wykonuje się spawanie odcinków obwodowych usytuowanych naprzemianlegle na obwodzie obejmy (8) z równoczesnym utrzymywaniem temperatury płaszcza rury (2a, 2b) i/lub powłoki (3a, 3b) z tworzywa w sąsiedztwie miejsca spawania poniżej temperatury mięknięcia powłoki (3a, 3b) z tworzywa. Korzystnie wnętrze spawanych rur (2a, 2b) schładza się, przykładowo rozprężanym dwutlenkiem węgla, względnie czas wykonywania spawania pojedynczego odcinka obwodowego reguluje się w zależności od temperatury mierzonej w sąsiedztwie nakładanej spoiny.The invention relates to a method of connecting pipes internally coated with a plastic coating, in particular polyethylene, used in the construction of pipelines carrying chemically aggressive liquids. The method according to the invention consists in the fact that before welding the clamp (8) on the shells of the connected pipes (2a, 2b) around the periphery of each edge (8a, 8b), essentially even circumferential sections are routed, after which welding of the circumferential sections is carried out after welding. alternately on the perimeter of the clamp (8) while maintaining the temperature of the pipe shell (2a, 2b) and / or the coating (3a, 3b) of plastic in the vicinity of the welding place below the softening temperature of the coating (3a, 3b) of plastic. Preferably, the inside of the welded pipes (2a, 2b) is cooled, for example by expanding carbon dioxide, or the welding time of a single circumferential section is controlled depending on the temperature measured in the vicinity of the weld to be applied.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL418931A PL230193B1 (en) | 2016-09-30 | 2016-09-30 | Method for joining pipes internally coated with a plastic lining, preferably made from polyethylene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL418931A PL230193B1 (en) | 2016-09-30 | 2016-09-30 | Method for joining pipes internally coated with a plastic lining, preferably made from polyethylene |
Publications (2)
Publication Number | Publication Date |
---|---|
PL418931A1 true PL418931A1 (en) | 2018-04-09 |
PL230193B1 PL230193B1 (en) | 2018-10-31 |
Family
ID=61809910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL418931A PL230193B1 (en) | 2016-09-30 | 2016-09-30 | Method for joining pipes internally coated with a plastic lining, preferably made from polyethylene |
Country Status (1)
Country | Link |
---|---|
PL (1) | PL230193B1 (en) |
-
2016
- 2016-09-30 PL PL418931A patent/PL230193B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
PL230193B1 (en) | 2018-10-31 |
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