November 9, 2021 is the 30th "fire safety publicity day" and the fifth "fire safety publicity month" in China. The theme of this year's "119" fire publicity month is "implementing fire responsibility and preventing safety risks". It is required to thoroughly implement the fire protection work policy of "prevention first and combination of prevention and fire elimination", closely focus on the theme of "implementing fire responsibility and preventing safety risks", take strengthening awareness, checking hidden dangers and ensuring safety as the improvement goal, and carry out various publicity and education, implement the fire safety responsibility system Strictly implement fire safety management according to law as a means to comprehensively improve employees' fire safety awareness, investigate and eliminate potential fire safety hazards, and prevent fire accidents.

However, fires caused by gas accidents occur frequently. Since this year, gas accidents have occurred frequently in China, and the safety situation is grim and complex. After the "June 13" major gas explosion accident in Shiyan, Hubei Province, a number of major gas accidents and typical accidents have occurred continuously in Liaoning, Hebei and other places recently.

On November 4, the office of the safety committee of the State Council issued a circular requiring all regions, relevant departments and units to deeply learn lessons from gas accidents, comprehensively strengthen urban gas safety, and resolutely reverse the current trend of frequent gas accidents. The circular stressed the need to effectively enhance the sense of political responsibility to prevent and resolve gas safety risks, and quickly carry out special rectification of gas safety. Strictly implement the provisions of the newly revised work safety law, and urge all kinds of catering enterprises using gas to install combustible gas alarm devices as soon as possible and ensure normal use.

Appeal to catering enterprises to install gas leakage alarm devices

In winter, the restaurant has a good airtightness, which is easy to cause gas explosion accidents. At the press conference of the State Information Office held on November 8, song Yuanming, Vice Minister of emergency management department, called on catering enterprises across the country to install gas leakage alarm devices in accordance with the newly revised production safety law to ensure the safety of restaurants. "People eat in restaurants. In case of  leakage, it will call the police. After the police, we will withdraw and deal with it as soon as possible."

Gas safety management solution for catering enterprises

However, the current management difficulty is that each restaurant has weak safety awareness of using gas and loose management, which brings safety risks.

At present, the most immediate and effective way is to replace civil air defense with technical defense. Use the most advanced technical means to monitor the full coverage of gas involved in urban catering, and rely on people's consciousness to a minimum.

By using passive optical fiber laser leakage monitoring system in restaurants, real-time monitoring of gas use can be realized to effectively avoid gas leakage accidents.

Passive optical fiber laser leakage monitoring system

The passive optical fiber laser leakage monitoring system is composed of laser monitoring platform, light sensing terminal and solenoid valve. The monitoring platform is placed in the monitoring center, the light sensing terminal is placed in the gas and fire unit, and the solenoid valve is placed at the inlet of the unit gas pipeline. The platform is connected with light sensing terminal and solenoid valve by optical fiber to form a gas safety monitoring network. In case of gas leakage, the system immediately drives the solenoid valve to cut off the gas source to prevent combustion and explosion. When the unit air of gas and fire reaches the safety standard, the system will automatically restore the air supply.

Passive monitoring can be realized

The laser emission and spectral analysis of electricity can be installed tens of kilometers away, while the monitoring site of gas and fire units only needs to install passive light sensing terminals. The remote monitoring platform can be used for real-time gas monitoring in catering gathering areas.

Long life

The main components of light sensing terminal are glass and stainless steel, and the service life can reach decades. There is no physical loss in the detection process. Therefore, the service life of passive fiber laser leakage monitoring equipment is 10 times that of traditional detection equipment.

No calibration required

  The passive optical fiber laser leakage monitoring system does not need regular calibration and maintenance, which can ensure its normal use.

No false alarm can improve the reliability of gas detection.

More stable

  The traditional detection equipment has poor stability and is vulnerable to impact and poisoning caused by high gas leakage concentration; Then detect the failure. Passive optical fiber laser leakage monitoring equipment does not have this problem. More stable performance.

  For the gas safety of the whole city, the pressure regulating boxes, pressure regulating cabinets and valve wells all over the city are the key nodes connecting catering and residential users. In case of gas leakage at these locations, it is very easy to form gas accumulation, resulting in potential safety hazards and accidents.

  Hanhai photoelectric Internet of things laser gas monitor constructs a monitoring and guarding system in which the pressure regulating box, pressure regulating cabinet and valve well of urban gas pipeline network are connected with each other.

Internet of things laser gas monitor

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. 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.