Corrosion monitoring in a fire sprinkler system

摘要

A fire sprinkler system according to one aspect of the present disclosure includes a pipe having a first pipe portion and a second pipe portion. The first pipe portion includes a wall having a first wall thickness, and the second pipe portion includes a wall having a second wall thickness that is greater than the first wall thickness. The fire sprinkler system further includes structure coupled to the pipe and defining a sealed chamber between the structure and at least the first pipe portion, and a sensor for sensing a pressure in the sealed chamber. Example corrosion monitoring devices and methods for monitoring corrosion in pipe systems, including fire sprinkler systems, are also disclosed.

主权项

1. A water-based fire sprinkler system comprising:
a water source; one or more sprinkler heads; a corrosion monitoring device positioned in a flow path between the water source and the one or more sprinkler heads, the corrosion monitoring device including a first pipe having opposite ends and a middle portion including a wall having a first wall thickness, a structure coupled to the first pipe and defining a sealed chamber between said wall of the middle portion and the structure, and a sensor to sense a pressure in the sealed chamber, the opposite ends of the first pipe each including a wall having a second wall thickness at a location spaced from where the structure is coupled to the first pipe; and a second and a third pipe coupled to the opposite ends of the first pipe, the second and third pipes each including a wall having the second wall thickness; wherein the second wall thickness is greater than the first wall thickness; wherein the first, second and third pipes each have the same inner diameter; wherein the first, second and third pipes are each rigid pipes comprising black iron or galvanized steel; wherein the first wall thickness is about 20-30 mils; and wherein a change in the pressure in the sealed chamber corresponds to a breach of said wall of the middle portion due to corrosion and is indicative of corrosion damage in the second and third pipes of the water-based fire sprinkler system.