Full-automatic double-safety protector for preventing indoor gas fron leakage

The utility model belongs to a protector preventing indoor gas leakage, which is composed of a gas alarm, an automatic opening device of a window and an automatic closing device of a gas valve; when the two devices simultaneously work, the protector has the double safety functions of automatically closing the gas valve and automatically opening the window; the two devices can be used jointly or separately and both have the automatic and manual control functions. The adoptive gas alarm when alarming outputs electric current of AC 220V or AC 110V the same as supply voltage to a time relay. After time is delayed by the time relay, the electric current is sent to a micro motor driving gears and racks to do straight-line motion. For the closing device of the gas valve, the micro motor drives a valve switch of a gas pipeline to rotate via a clamp block. The utility model has the advantages of easy use, flexibility, strong safety function and high automatization.