In recent years, gas accidents have occurred frequently, which has seriously affected the safety of people's lives and property.

With the approval of the State Council, ten departments, including the State Economic Commission, the State Construction Commission, the national defense industry office, the finance and trade group of the State Council, the all China Federation of trade unions and the Central Broadcasting Bureau, jointly decided to carry out the month of safe production nationwide in May 1980, and decided to carry out the month of safe production every June in the future to make it regular and institutionalized.

June 2022 is the 21st national "safety production month", with the theme of "observing the safety production law and being the first responsible person". As far as June is concerned, there are 10 gas accidents with great impact that deserve attention.

01

6.1 explosion of Changsha breakfast restaurant

On June 1, "Changsha County Financial Media Center" issued a notice saying that at about 6:30 a.m. on June 1, a fire and explosion accident occurred in Xingsha street. After receiving the report, fire and emergency departments rushed to the scene for rescue at the first time. As of the morning of that day, one person had been killed and 13 injured in the accident.

     02

On June 1, a restaurant in Heilongjiang was suspected of gas explosion

At about 3 p.m. on June 1, an explosion suddenly came out of a two-story shop in Harbin, Heilongjiang Province. At present, five injured people have been sent to hospital for examination and treatment. The staff of a spicy chain store told reporters that some people, including the owner and his wife, were injured and sent to hospital.

03

6.3 a roast duck restaurant in Shaanxi burst into flames

Jingbian County, Yulin City, Shaanxi Province reported a fire in a roast duck restaurant. In the accident notification of the local government, it was preliminarily judged that the fire of the roast duck stove (using liquefied petroleum gas) caused the accident. The mother rushed into the fire to save her two children, and all three members of the family were killed.

04

6.8 sudden explosion of gas tank in the tenant's home in Kunming, Yunnan

At about 11 p.m. on June 8, a gas tank in the home of a tenant in Qinglong village, Jinwa Road, Panlong District burst into flames, causing two people and a passer-by in the house to be injured to varying degrees.

05

6.19 a suspected gas explosion occurred in a community in Hohhot

At 17:10 on June 19, a suspected gas deflagration accident occurred in a household in the community of No. 2 family courtyard of Xincheng hotel in the new urban area of Hohhot, causing minor injuries to two people. After preliminary verification, the gas hose connecting the site and the stove fell off, which is suspected to be gas deflagration. The specific cause of the accident is under investigation.

06

On June 21, an explosion occurred in a gatehouse in Tai'an, Shandong Province

A total of 13 people were injured in an explosion caused by the leakage of liquefied gas tanks in the front room of Greenland mansion on the first floor of Tai'an City. Up to now, three of them have died due to serious injury and deterioration of the injury.

07

On June 21, an explosion occurred in a community in Dongchang District, Tonghua City, Jilin Province

At about 18:00 on June 21, an explosion occurred on the 4th floor of a community in Dongchang District, Tonghua City, Jilin Province. After investigation, it was found that the kitchen gas tank exploded at the scene, causing a total of 4 injuries.

08

6.21 Tianjin Gas Explosion

Near the intersection of Beicheng East Road and Wusu road in Baodi District, Tianjin, gas leakage caused by illegal construction led to a combustion explosion accident, resulting in 23 injuries, including 3 severe burns, which are being treated in a professional hospital; 15 slightly injured persons were observed and treated in the hospital; Five slightly injured persons have been discharged. The cause of the accident is under investigation.

09

6.24 explosion of a commercial street shop in Yanjiao, Hebei

Sanhe Municipal People's government website issued a notice: at 9:18 on June 24, a liquefied petroleum gas cylinder explosion accident occurred in a merchant in Times Square, fuchengshang street, Sanhe City, and the on-site search and rescue work ended at 13:30. A total of 22 people were injured in the accident, of which 2 died after rescue.

10

6.26 explosion in Shenyang noodle restaurant

At about 11 a.m. on June 26, an explosion occurred in Jicai bone soup noodle restaurant in Guchengzi area, Donghu street, Hunnan District, Shenyang City, Liaoning Province. It was initially suspected that the explosion was a liquefied gas tank explosion, which caused a slight injury to one person.

Corresponding countermeasures are needed to prevent gas accidents and disasters

How to detect gas leakage?

How to quickly detect leaks?

Hanhai Technology Group makes full use of the existing technologies and achievements related to gas leakage monitoring, focuses on the pain points and difficulties in the development of urban gas safety, takes national demand as the guide, takes innovation and research as the drive, and cooperates with the Chinese Academy of Sciences to undertake the industrialization of laser absorption spectrum gas detection technology, a major national special scientific research achievement, in view of the safety of urban gas lifeline. The laser gas leakage monitoring equipment independently developed by Hanhai technology group solves the problem that urban gas stations, unattended stations, pipeline inspection and other problems cannot be monitored in real time. Escort the safety of urban gas.

Aiming at the blind spot of urban gas safety, the laser gas leakage monitor can solve the hidden danger of gas leakage before entering the house. It has the following technical advantages:

01 low power consumption

The laser gas leakage monitor of the Internet of things adopts solar energy and battery power supply, and uses intelligent monitoring system, ultra-low power consumption and ultra-long operation time to promote the effective monitoring of the end link.

02 preventive monitoring

The response time is less than 10 seconds, which can accurately detect ppm trace gas leakage, upload the monitoring and alarm data to the cloud platform, make the gas concentration data display more intuitive, help the full coverage monitoring of urban gas leakage, and truly realize the preventive monitoring of gas leakage.

03 easy installation

The modular design from detector to control system is adopted. The simplified system structure makes the installation easier.

04 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.

05 omnidirectional NB lot Internet of things access

Using Internet of things technology, all areas covered by the network can be used without limitation of distance and scope.

06 waterproof alarm function

The water level monitoring function can monitor the accidental water inflow in the valve well in real time.

Passive fiber laser leak monitoring system

Hanhai photoelectric passive fiber laser leakage monitoring system is composed of laser monitoring platform and passive laser detector. Passive laser detectors can be installed in areas such as outdoor risers, gas tube wells and kitchens. The platform is connected with the detector and solenoid valve by optical fiber to form a gas safety monitoring network. Once the gas leaks, the system will immediately drive the solenoid valve to cut off the gas source to prevent combustion and explosion. When the air in the gas and fire area reaches the safety standard, the system will automatically restore the air supply.

01 No electricity required

The host of the system can be installed dozens of kilometers away, while the monitoring site of the gas and fire unit only needs to install passive optical terminals (pure optical equipment, no power supply). Through the remote monitoring platform, the real-time online monitoring of combustible gas can be realized.

02 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.

03 Long life

With semiconductor light source and optical glass, there is no physical loss in non-contact measurement, and the service life can reach decades. Therefore, the service life of passive fiber laser leakage monitoring equipment is 10 times that of traditional detection equipment.

04 More stable

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