US 2023/0417356 A1 · BOLTED AND WELDED CLAMP-TYPE REPAIR WITH RECESSED BOLTS

Bolted and welded clamp-type repair with recessed bolts

AssigneesPetroleo Brasileiro S.A. - Petrobras, Universidade Federal De Santa Catarina (UFSC)

InventorsGIOVANI DALPIAZ, LAERCIO MENESES SILVA, JR., PAULO DE TARSO ROCHA DE MENDONÇA, RÉGIS HENRIQUE GONÇALVES E SILVA, MATEUS BARANCELLI SCHWEDERSKY, RAFAEL ALBINO BERNARDI, JOSÉ CARLOS DE CARVALHO PEREIRA, FRANCISCO FRANCELINO RAMOS NETO, MARCELO TORRES PIZA PAES, MAXMILIAN MAINARDI, EDUARDO ALBERTO FANCELLO, FABIO DE CASTRO MARANGONE, RICARDO REPPOLD MARINHO

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Abstract

The present model refers to a bolted and welded clamp-type repair with bolts and nuts housed in recessed locations that will be hermetically insulated by welding plugging discs to be used in the repair and maintenance of pipes. The clamp-type repair comprises a lower part (1) and an upper part (2) that will perfectly accommodate the pipe, wherein said lower part (1) and upper part (2) each comprise a flanged portion (3) at both ends, and the flanged portions (3) each comprise at least one recess (4) to accommodate the bolt-nut assembly (7) where the plugging discs (8) will be positioned immediately above. The welding process of the edges between the same and next to the pipe (12) and the plugging discs (8) next to the surface of the flanges (3) guarantee the necessary safety and enable the repair to be defined as permanent, without the need for later replacement.

Claims1

Dependent claims

A bolted and welded clamp-type repair with recessed bolts comprising:

a lower part comprising:
a circumferential edge;
a longitudinal edge;
and
a flanged portion;
an upper part, comprising:
a circumferential edge;
a longitudinal edge and;
a flanged portion;
wherein the flanged portion of the lower part and the flanged portion of the upper part each comprise at least one recess to accommodate at least one bolt-nut assembly;
and one or more plugging disks positioned immediately above the bolt-nut assembly and welded next to the surface of the flange of the upper part and;
wherein the circumferential edges of the lower part and the upper part are welded to a pipe and wherein the and longitudinal edges of the upper and lower flanges are welded together.

9 more elements

Dependencies are inferred from the claim text.