Deviation correction detection device and squeezing deviation correction system for pickling bath of pickling rolling unit

An acid rolling unit pickling bath deviation rectification detection device and a wringing deviation rectification system belong to the technical field of metallurgy, the deviation rectification detection device comprises two mounting racks respectively arranged on two sides of strip steel, two parallel double-layer hollow sleeves are arranged between the two mounting racks along the height direction, and the two mounting racks are connected with the wringing deviation rectification system. Two groups of deviation rectifying sensing components are respectively arranged at two ends in the two double-layer hollow sleeves, and a detection channel for strip steel to pass through is formed between the two double-layer hollow sleeves; the wringing deviation rectifying system comprises the deviation rectifying detection device and a wringing deviation rectifying mechanism, and has the beneficial effects that the condition that the deviation rectifying sensing part and the linear displacement sensor are corroded and