Seabed gas leakage detection simulation device

The invention relates to the field of seabed observation, in particular to a seabed gas leakage detection simulation device. The device comprises a shell, a shooting mechanism, a multi-beam echo detection mechanism, a bubble generator and an air distribution mechanism; the shell comprises a front wall plate, a side wall plate and a rear wall plate, wherein the front wall plate, the side wall plateand the rear wall plate are fixedly connected in a watertight mode, bottom plates are fixedly connected to the bottoms of the front wall plate, the side wall plate and the rear wall plate in a watertight mode; a shooting mechanism is arranged on the outer side of the inwards-concave part, a multi-beam echo detection mechanism is arranged on the outer side of the front wall plate, and a bubble generator is arranged on the bottom plate and connected with an air distribution mechanism. The simulation of the escape process of different gases on the seabed is realized, different bubble numbers andbubble speeds can be simu