Gas explosion critical parameter testing device and testing method

The invention relates to the technical field of gas explosion testing, and discloses a gas explosion critical parameter testing device and method, and the device comprises a mounting table, the top of the mounting table is fixedly connected with a reaction mechanism, and the top of the mounting table is fixedly connected with a temperature control mechanism. An air supply mechanism connected with the reaction mechanism is fixedly connected to the top of the mounting table, air is fed into an air inlet box through an air inlet pipe and a fuel gas inlet pipe, an air plate and a transmission shaft in the air inlet box are driven to rotate, the transmission shaft drives a stirring rod to stir, and mixing of air and fuel gas is achieved; then the mixed gas enters the reaction tank body to drive fan blades and a rotating pipe to rotate, the rotating pipe drives a mounting pipe and a transmission plate to rotate, and the entered gas is mixed again, so that full mixing of the air and the fuel gas is realized, the mix