At about 10:00 on November 4, a household in unit 2, No. 35, Xizhong Road, Shibei District had a gas flash explosion and triggered a fire. Two people were injured in the accident and have been sent to the hospital for treatment without life-threatening. The cause of the fire is under investigation.

▲ Proportion of different gas source accidents in the first half of 2021

(data source: national gas accident analysis report)

According to the type of accident gas source, there were 191 natural gas accidents, 38 deaths and 201 injuries. At the same time, there were 305 residential user accidents in the first half of the year, killing 25 people and injuring 189 people.

Taking the accident as an example, the safety of gas can not be underestimated. We cannot predict the occurrence of accidents, but we can prevent risks. How to avoid the potential risks caused by gas has become a rigorous problem.

Gas explosion accidents occur frequently. How to prevent them?

There are many closed spaces such as pressure regulating boxes, pressure regulating cabinets and valve wells distributed in the underground gas pipe network of the city. In case of gas leakage at these locations, it is very easy to form gas accumulation, resulting in potential safety hazards and accidents. These places are not only the important links of urban underground lifeline, but also the key nodes for gas pipelines to connect residential users.

Aiming at the hidden danger of gas safety, Hanhai optoelectronics has launched an Internet of things laser gas monitor suitable for pressure regulating box, pressure regulating cabinet and valve well.

Internet of things laser gas monitor

The laser gas monitor of Hanhai photoelectric Internet of things adopts laser absorption spectrum gas detection technology, which is composed of power supply and communication module, detector and monitoring platform; It is applicable to the early warning of trace gas leakage in urban gas pressure regulating box, pressure regulating cabinet and valve well.

The detectors of the Internet of things laser gas monitor are installed in various pressure regulating boxes, pressure regulating cabinets and valve wells all over the city.

The detector can monitor the gas leakage in the enclosed and semi enclosed spaces of the surge tank, surge tank and valve well, and transmit the monitored gas leakage status to the instrument monitoring platform in real time, quickly and accurately through wireless transmission.

Working diagram of IOT laser gas monitor

The video screen of the monitoring platform can visually display the specific location of the leakage point in the leakage area. Realize the IOT monitoring network covering all positions of key nodes of the whole urban gas pressure regulating system, so as to control the overall safety status of urban gas in real time and eliminate the potential safety hazards and accidents caused by the accumulation of trace gas leakage in time.

Using laser absorption spectrum gas detection technology, Hanhai photoelectric IOT laser gas monitor can actively monitor gas leakage risk nodes without waiting for gas to diffuse to the equipment and change from passive to active.

01 high sensitivity

Trace gas leakage can be accurately detected and the reaction speed can be less than 0.1 second. In the early stage of hidden danger, it can prompt and change the alarm into early warning.

02 high monitoring accuracy

It can achieve "fingerprint" detection, provide reliable and accurate monitoring data, 0 false positives and completely eliminate false positives.

03 strong anti-interference ability

It will not be disturbed by humidity, dust, temperature and other gases, and can work in high humidity environment for a long time.

04 stable

Long term stable operation, safer and more reliable.

In recent years, there are numerous important and special events caused by gas leakage. Every soul stirring rescue and the disappearance of every life remind us that every family or the whole city should take precautions in advance, maintain the safety of gas use with practical actions and effects, and nip the gas explosion accident in the cradle.