FIELD: pipelines; corrosion prevention.
SUBSTANCE: insulating coupling comprises: a metal case in the form of a hollow cylinder with an inner collar, rigidly fixed with two flanges which have holes for standard fastening elements; an electrically-insulating joint between the pipes; two hollow cylinders made from dielectric materials placed inside the metal case, one of them is limited by an inner collar. The following is positioned inside the cylinders: sealing gasket rings; two metal rings; two C-shaped rings with claws on the inside and spherical external surface made from the material harder than the material used for the pipes; two driving washers with taper surface on the inside and two stepped dielectric bushings. The flanges on the case are fastened to the pressure flanges with cylindrical noses which are tightly inserted into the hollow dielectric cylinders.
EFFECT: increases the pipe coupling durability.
1 dwg
Title | Year | Author | Number |
---|---|---|---|
ELECTRICALLY INSULATING FLANGE CONNECTION OF PLAIN TUBES | 2009 |
|
RU2403488C1 |
INSULATING DEVICE FOR ASSEMBLY OF PIPES | 2009 |
|
RU2429406C1 |
INSULATOR | 2019 |
|
RU2717461C1 |
HIGH PRESSURE FLANGE COUPLING WITH DIELECTRIC UNION FITTING | 2010 |
|
RU2442062C2 |
PIPE INSTALLATION DEVICE | 2007 |
|
RU2352849C1 |
PIPELINE ELECTRIC INSULATION MONOBLOCK | 2000 |
|
RU2186288C2 |
ISOLATED PIPE JOINT | 2007 |
|
RU2350823C1 |
COUPLING FOR JOINING PIPES | 2006 |
|
RU2298718C1 |
ELECTRICALLY INSULATING FLANGED JOINT | 1993 |
|
RU2076985C1 |
ASSEMBLY OF INSULATING INSERTS FOR PIPE LINE WITH FLANGES | 1994 |
|
RU2078278C1 |
Authors
Dates
2012-02-10—Published
2010-07-15—Filed