Gas leaks most often occur in these three places: Connections: If the connection parts are damaged, aged, or the sealing materials fail, the gas will easily leak out. Gas hose: Once the hose is aged, cracked, bitten by rats, or the clamp is loose, the gas may “slip out”. Valve: Loose valves can also become the source of gas leaks.
And improper use can also cause leaks. For example, when people are not around for a long time while cooking soup, the soup overflows and puts out the fire of the gas stove, but the gas is still bubbling out.
The main components of artificial gas and natural gas are methane. If the concentration of methane in the air is too high or too low, it will generally not cause an explosion. <5% (concentration) will only form a combustion layer, just like the small flame formed on the gas stove when we cook; >16% (concentration) There is not enough combustion aid and it will not explode; the concentration is between these two, it is very dangerous.
Natural gas in the dangerous concentration range only needs extremely small energy to be ignited and detonated. For example, the electric sparks generated when we accidentally touch the switch in our daily life, the static sparks generated by the friction of clothes, and even a cigarette butt that is not completely extinguished, these seemingly insignificant sparks may become the “fuse” that ignites the danger at this time, instantly triggering a powerful explosion.
So how can we prevent gas leaks? There are several ways: regularly check the connectors, hoses and valves carefully to see if they are intact. The kitchen should be ventilated frequently, so that the concentration of leaked gas can be diluted in time and the risk of explosion can be reduced. Installing a gas alarm is definitely a good way to prevent danger in advance.
The household gas alarm is a powerful assistant in preventing gas leaks. Its core component, the sensor, can monitor the concentration of combustible gas leakage 24 hours a day without rest. Once the concentration reaches or exceeds the preset value, the alarm will immediately send out a loud sound and light alarm signal to remind everyone to take measures quickly.
How to install a household gas alarm?
With the improvement of people’s safety awareness and the promotion of national policies, the installation rate of household gas alarms has gradually increased in recent years, protecting the gas safety of thousands of households. However, incorrect installation and use methods will not only fail to play a warning role, but also cause new dangers due to false alarms or no alarms.
★ The gas alarm should be installed on the indoor wall within 4 meters and 2 meters away from the gas appliance or gas source horizontally, and in a well-ventilated place.
★ When detecting gases lighter than air such as natural gas, the alarm should be installed 0.3-0.6 meters from the ceiling.
★ When detecting gases heavier than air such as liquefied petroleum gas, the alarm should be installed 0.3-0.6 meters from the ground.
★ Note: Gas alarms should avoid being installed in the following locations: places with high wind speed such as passages; places with water mist or dripping; places near stoves that are easily contaminated by oil smoke, steam, etc. or high temperature environments (such as directly above stoves); places blocked by other objects (such as in cabinets); refrigerators, air conditioners and other vibrating objects.
★ No matter where the gas alarm is installed, its sensor should always face downward. The gas alarm should be installed in a place that is easy to see and hear, and its display panel should face people, and should not be installed on the back or side, etc.
How to choose and use the gas hose?
◆ Metal connecting hoses that meet the current national standards should be selected as much as possible. Compared with rubber composite hoses, metal-clad pipes and metal bellows are more resistant to high temperatures, corrosion, and rat bites.
◆ The interface between the gas hose and the gas equipment pipeline should ensure that the connection is firm, and regularly check whether the connection part is leaking. Once a leak is found, it should be stopped immediately.
◆ The gas hose should be replaced regularly.
How to install the pipeline gas self-closing valve?
The pipeline gas self-closing valve has the function of automatic cut-off protection for overpressure, underpressure, and overcurrent. When the gas in the pipeline exceeds or falls below a certain pressure, or when the hose falls off and causes the gas flow rate to increase abnormally, it will automatically cut off, thereby protecting the user’s gas safety.
During the installation of the self-closing valve, the gas pipeline should be kept clean to prevent debris and dirt from entering the gas self-closing valve. The convenience of operation and maintenance of the self-closing valve should be considered during installation, and the quality and sealing of the connecting pipe between the self-closing valve and the gas meter should be ensured. In the daily use of gas, timely installation of the gas “three-piece set” can effectively reduce the risk of gas safety accidents and ensure the safety of residents’ gas use.
