Built-in cavity type flyer detonator

The invention discloses a built-in cavity type flyer detonator and belongs to the technical field of explosive materials, the built-in cavity type flyer detonator comprises a detonator shell, a detonator body and a reinforcing cap, the detonator body is installed in the detonator shell, and a gauze element is arranged on the side, adjacent to a Teramine explosive, of the detonator body. By means of the cavity integrally formed in the pipe body, it can be guaranteed that the flyer has a certain acceleration space so that the maximum kinetic energy can be formed, the situation that gaps are generated among explosives during inverted detonation can be effectively prevented through the gauze element arranged on the built-in pipe body, the speed of the flyer can be ignored and weakened through the arrangement of the gauze element, and therefore the flyer can be prevented from being exploded. According to the high-temperature and high-pressure gas flyer, the kinetic energy of the flyer is not reduced and is utilize