Detection system for detecting oil content in gas in continuous annealing furnace on line

Abstract

The invention relates to a detection system for detecting oil content in gas in a continuous annealing furnace on line. The system consists of a main analysis loop and a branch analysis loop, wherein the main analysis loop comprises a sampled gas cooler, a gas distributor, an automatic switching valve, a manual switching valve, a check valve, a water collector, a large particle filter, a pressure detection instrument, a pressure signal conversion and display instrument, a gas circulating pump and a feedback gas drier, forms a close loop together with the annealing furnace and is used for collecting and feeding back gas; and the branch analysis loop comprises a chromatographic analyzer, a manual switching valve, a disperser and a waste discharge separator and is mainly used for the sampling and the waste gas exhaust of the chromatographic analyzer. By using the detection system, the gas pollution conditions in the furnace and the oil leakage conditions of equipment in the furnace can be mastered timely and accurately so as to provide possibility for observing the change of pollutants in the furnace in a production process transition process.

Description

Technical field [0001] The invention relates to the technical field of heat treatment of cold-rolled metal strips, and in particular to a detection system for online detection of oil content in gas in a continuous annealing furnace, which is used in the production fields of mid- to high-end automobiles and home appliance panels. Background technique [0002] As the demand for high-surface quality products in the automobile and home appliance industries continues to increase, the requirements for product surface quality are becoming more and more stringent, which has promoted 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 sealing, some key issues that restrict the improvement of product quality have still not been broken through. The detection of gas cleanliness in the continuous annealing furnace...

AI Technical Summary

Problems solved by technology

Harmful substances remaining in the furnace not only pose a threat and affect the product quality, but also cause damage to the equipment in the furnace

[0004] At present, there is no recognized judgment method for the quantity and degree of harm of such hazardous substances at home and abroad, let alone mature detection methods and devices

In production, the furnace can only judge according to the existing instrument indication and experience, which greatly increases the difficulty of operation and the probability of misjudgment

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