Fire knowledge: turn off the gas tank valve or gas stove switch after cooking.

Turn off the gas stove first, then turn off the gas valve, turn off the stove first to ensure that the fire on the stove is extinguished, and then turn off the gas tank to ensure that it will not cause backward suction.

Because the gas tank compresses the gas into the gas tank, if the gas tank is turned off first, but there is gas in the gas pipe and the stove is still burning, when the gas in the gas pipe is running out, the flame will burn into the gas pipe, causing the gas pipe to catch fire and even hurting the gas tank.

This is often called tempering, which not only damages kitchen utensils, but also may cause serious fires. In addition, if the gas valve is turned off first and then the gas stove is turned off, the gas in the gas pipe will almost burn out, and the gas in the pipe will be completely mixed with air when it is used again, which may cause deflagration at the moment when the gas stove is turned on and ignited, causing danger.

Extended data

Matters needing attention in gas use

1. It is recommended to replace the hose connecting the gas pipe (steel cylinder) to the cooker every 18 months, and the service life stipulated by the state shall not exceed two years;

2, every time after cooking, first turn off the stove switch, and then close the tube (cylinder) valve. On the contrary, there is no pressure in the pipeline, which is easy to cause tempering explosion;

Don't scald the cylinder with boiling water. When boiling water is cooled, the pipeline pressure is reduced, and it is easy to backfire and explode.

4. Pay attention to whether there is a flameout protection device when buying a cooker;

5. Business users, such as hotels and canteens, string several cylinders together because of the large consumption and insufficient one cylinder. Such a "cylinder group" can only be used after being tested by professional departments and the explosion-proof ventilation conditions and leakage alarm devices are qualified.

China Gas Network-Is it the right order to turn off the gas stove first or turn off the gas valve and gas tank after using up the gas?