Leak Detection Device in Joints between Pipes with Flanges and Gaskets

摘要

The present invention relates to a device for detecting leaks of liquids or gases caused by temperature variations, pressure variations, wear on the clamping and coupling devices, wear on sealing devices, by corrosive action, among others, in joints between pipes made by flanges (F) and together and basically comprises a strip (1) to be applied to the region of the “gap” (G) between flanges (F) with a pressure sensor (2) and protective caps (3) adapted to a screw head casing (PE) and nuts (P) employed for mounting between flanges (F).

主权项

1. LEAK DETECTION DEVICE IN JOINTS BETWEEN PIPES WITH FLANGES AND GASKETS for use in leak detection of liquids or gases caused by temperature changes, pressure changes, wear of clamping and coupling devices, wear on sealing devices, or by corrosive action characterized in that:
a strip (1) made of a substantially porous laminar substrate (11) covered by at least one layer (EC) of a modified silicone elastomer strip (1) serving to cover the entire surface of the joint between the flanges (F) and the gap (G), and additionally, may have an orifice (12) located at a point of the length and centered in relation to the width of the strip(1); a pressure sensor (2) to be fixed in the orifice(12) of the strip (1) which serves to record the minimum pressure change which occurs between flanges (F) and is formed by a substantially cylindrical base (21) in the interior which has a firmly bonded membrane (22) of resilient material and resistant to corrosive fluids, with a trigger (23) above the latter, which is connected to a recorder (24) which can be chosen from a mechanical type (241) and having an electronic circuit (242) and a cover (25) which is firmly fixed to a protective base (21) isolating the internal components of the environment; protective caps (3), in sufficient number to cover the screw head cases (PE) and nuts (P), made of resistant plastic materials plus a load of UV protection, consisting of a fitting body (31) and a hollow hexagonal on its open end integrally joined as an extension of the latter, a flat surface shaped flap (32), substantially circular and exceeding the dimensions of the fitting body (31) and covered internally by a modified silicone grease (GX).