Boiler detection leakproof device

The utility model relates to the technical field of boiler detection, and discloses a boiler detection leakproof device which comprises a base, the top of the base is fixedly connected with the bottom of a boiler body, a warning structure and a leakproof device are arranged in the boiler body, and the leakproof device comprises a piston plate, a first trapezoidal block, a vertical rod, a first spring and a driven piece. The surface of the piston plate is slidably connected with the inner wall of the furnace body, the right side of the piston plate is fixedly connected with the left side of a first trapezoidal block, the bottom of the vertical rod is fixedly connected with the inner wall of the furnace body, the right side of the vertical rod is fixedly connected with the left side of a first spring, and a driven part is arranged on the right side of the first spring. When the air pressure in the boiler is too large, the piston plate can be pushed to move rightwards and abuts against the hinge rod at the momen