Protective Device for the Covering of Flanges for Pipe Construction

Abstract

A protective device 1 exhibits an insert 3 for connection to a welding flange neck 2 for pipe construction. The protective device 1 is furthermore equipped with a disc 4 disposed around this insert 3 for the covering of a partial surface 5 and/or a sealing surface 7 of the welding flange neck 2 . The insert 3 is dimensioned in this case corresponding to the flange hole 6 of the welding flange neck 2 and exhibits in addition a resilience 8.

1 . Protective device ( 1 ) for welding flange necks ( 2 ) for pipe construction having a disc ( 4 ) for the covering of a partial surface ( 5 ) of the welding flange neck and having transversely disposed to said disc ( 4 ) an insert ( 3 ) via which insert ( 3 ) the protective device ( 1 ) is releasably connected to the welding flange neck ( 2 ) wherein the insert ( 3 ) is provided with a resilience ( 8 ) and is connectable to the welding flange neck ( 2 ) by means of a clamping connector, wherein the disc ( 4 ) on its side ( 15 ) facing the flange ( 2 ) exhibits an centrically-extending bead ( 17 ) or indent. 
     
     
         2 . Protective device according to  claim 1  wherein the disc ( 4 ) is embodied corresponding to a sealing surface ( 7 ) provided on the welding flange neck ( 2 ). 
     
     
         3 . Protective device according to  claim 1  wherein the insert ( 3 ) exhibits at least substantially a cylindrical basic form. 
     
     
         4 . Protective device according to  claim 1  wherein the protective device ( 1 ) is manufactured from a plastic with a density of ≧1 kg/m 3 . 
     
     
         5 . Protective device according to  claim 1  wherein the insert ( 3 ) exhibits openings ( 9 ) serving as a resilience ( 8 ). 
     
     
         6 . Protective device according to  claim 5  wherein the resilience ( 8 ) is formed by openings ( 9 ) extending parallel with respect to the longitudinal axis ( 11 ) of the insert ( 3 ). 
     
     
         7 . Protective device according to  claim 6 , wherein the openings ( 9 ) are embodied as notches ( 12 ). 
     
     
         8 . Protective device according to  claim 6 , wherein the openings ( 9 ) are embodied as slits ( 13 ). 
     
     
         9 . Protective device according to  claim 6 , wherein the openings ( 9 ) are embodied as slits ( 13 ) with rounding-offs ( 14 ). 
     
     
         10 . Protective device according to  claim 1  wherein the insert ( 3 ) is formed by means of a plurality of separately disposed edge clips ( 30 - 33 ). 
     
     
         11 . Protective device according to  claim 10  wherein the edge clips ( 30 - 33 ) exhibit curvatures ( 38 - 40 ) on their outer faces ( 34 - 36 ). 
     
     
         12 . Protective device according to  claim 10  wherein the edge clips ( 30 - 33 ) exhibit webs ( 41 - 44 ) on their outer faces ( 34 - 37 ) which improve the clamping effect. 
     
     
         13 . Protective device according to  claim 1  wherein the bead extends ( 17 ) to the outer edge( 19 ) of the disc ( 4 ). 
     
     
         14 . Protective device according to  claim 1  wherein the disc ( 4 ) is provided with a plurality of concentrically-progressing and preferably with two beads ( 17 ,  18 ). 
     
     
         15 . Protective device according to  claim 1  wherein the disc ( 4 ) on its side ( 16 ) facing away from the flange ( 2 ) exhibits at least one pulling arrangement ( 20 ). 
     
     
         16 . Protective device according to  claim 15  wherein the pulling arrangement ( 20 ) comprises at least one and preferably two oppositely disposed lugs ( 21 ).