Method for detecting cleanness of multiple sampling points automatically and continuously

Abstract

The invention relates to a method for detecting the cleanness of multiple sampling points automatically and continuously, which comprises the following steps of: pumping gas in a furnace chamber of an annealing furnace by using a sampling metering pump, controlling an automatic switch valve in a major loop to select collectors, and allowing furnace gas to pass through the currently-selected collector according to the set flow, so that various particulate matters in the furnace gas are blocked in the current collector; opening the collectors one by one by a controller according to the set sequence to collect pollutants continuously and automatically; solving the concentration of the particulate matters in the furnace gas of each sampling furnace area according to the weight difference of afilter cartridge of a total pollutant collector before and after sampling; analyzing matter components in a pollutant analyzing collector after the sampling to obtain the distribution ratio of different components of the furnace gas pollutants; and estimating the pollution degree in the furnace and judging whether noxious matters in each furnace area is abnormal or not through the detection of the cleanness of the furnace gas in each furnace area. By the method, the pollutants in the furnace can be detected accurately, so the method provides the reference for improving the quality of productsand arranging blow-out overhauling and furnace cleaning reasonably.

Description

technical field [0001] The invention relates to the technical field of heat treatment of cold-rolled metal strips, in particular to a method for realizing automatic and continuous cleanliness detection of multiple sampling points, which is used in the production fields of medium and high-end automobiles and home appliance panels. Background technique [0002] With the increasing demand for high surface quality products in the automobile and home appliance industries, the requirements for product surface quality are becoming more and more stringent, which promotes the development of new technologies for continuous galvanizing and continuous annealing production lines. However, the continuous annealing furnace as the core equipment is subject to high temperature, Affected by factors such as airtightness, some key issues that restrict the improvement of product quality have not been broken through. The detection of the cleanliness of the gas in the furnace under the production s...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to reasonably determine the production process, improve the surface quality of medium and high-end automobiles and household appliances, and provide a fast and reliable method for automatic and continuous cleanliness detection of multiple sampling points

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