Water-cooled wall local reducing atmosphere monitoring system for online monitoring CO by grid method

The invention discloses a water-cooled wall local reducing atmosphere monitoring system for online monitoring CO by a grid method. The front ends of sampling branches comprise sampling probes, the sampling probes go deep into hearths from small holes in water-cooled wall fins and are fixed on the water-cooled wall fins, the sampling probes are connected with sampling valves, dust removal devices, water removal devices and air extractors are arranged between the sampling valves and gas analysis devices, outlets of purging branches are connected between the sampling probes and the sampling valves, purging valves are arranged between the outlets of the purging branches and inlets of the purging branches, the inlets of the purging branches are connected with compressed air devices, and the gas analysis devices are connected with sampling controllers. According to the system, all the sampling probes are arranged in a preset high-temperature corrosion easy-to-occur area in the hearths according to the equal-area gr