Mining intrinsic safety type laser methane sensor

The utility model discloses a mining intrinsic safety type laser methane sensor which comprises an anti-explosion shell, a sensing device and a power supply device, the sensing device and the power supply device are arranged in the anti-explosion shell, the anti-explosion shell is composed of a shell body and a shell cover, a through opening is formed in the back face of the shell body, a plurality of inserting grooves are formed in the edge wall of the through opening, the size of the shell cover is the same as that of the through opening, and the shell cover is arranged in the shell body. A plurality of channels are formed in the shell cover, inserting strips are movably arranged in the channels, one ends of the inserting strips extend out of the top face of the shell cover after being bent to form blind nuts, springs connected with the ends of the inserting strips are arranged in the channels, the other ends of the inserting strips extend outwards from the side edge of the shell cover, and the extending po