The invention relates to a gas well blowout prevention ignition ball which comprises a plug core (1), an insulation base (2), a base (3), a connecting body (4), a
lantern ring (5), a
pipe casing (6), a center
pipe (7), a nut cap (8), a regulating sheet (9), a plug
cove (10), an ignition ball (11), propelling charge (12), a
delay device (13), an ignition head (14) and
propellant powder (15), wherein the plug core (1) is connected with the insulation base (2) which is connected with the base (3), one side of the plug core (1) is connected with the ignition head (14), the base (3) is provided with the connecting body (4), the outer side of the connecting body (4) is provided with the
pipe casing (6), the inner side of the connecting body (4) is provided with the
delay device (13) which is provided with the
lantern ring (5), the center pipe (7) is arranged on the
lantern ring (5) and provided with the nut cap (8), the ignition ball (11) is arranged between the center pipe (7) and the pipecasing (6), and the regulating sheet (9) and the plug cover (10) are arranged on the top of the ignition ball (11). By adopting the invention, the safety of the operator is improved; and an ignition shrapnel continuously combusts at high temperature, has the advantages of large spreading area, high ignition efficiency and better static prevention function, and is convenient and simple in operation.