Multidirectional closed detection unit for catalytic cracking pilot plant

The invention relates to the technical field of catalytic cracking equipment, in particular to a multidirectional closed detection unit for a catalytic cracking pilot plant, which comprises a catalytic cracking furnace body, and the outer side wall of the catalytic cracking furnace body is provided with an external detection port for observing the internal condition of the catalytic cracking furnace. According to the multidirectional closed detection unit for the catalytic cracking pilot plant, an external detection opening is formed in the outer side wall of a catalytic cracking furnace body, and an external closed sealing cover internally provided with an elastic anti-impact module is arranged at the opening position of the outer side of the external detection opening; the impact of the pressure in the furnace on the detection opening closing mechanism can be effectively reduced, and the safety is greatly improved; a lateral overturning closing plate is arranged on the inner side face of the external detect