Up to 2020.12.5, there have been 122 fatalities in coal mines across the country this year, killing or trapping 224 people. This year, major coal mine safety accidents (compared to 2019) have increased by one, and the death toll has increased by 16 people, an increase of 50% and 44% respectively." Chongqing Songzao "9.27" fire accident, 16 people died and 38 people were injured; Chongqing Songzao "9.27" fire accident caused 23 deaths. Many fresh lives are suspended under the coal mine. While we deplore it, the safety of coal mine operation should also arouse people's attention and sound the alarm bell in the bottom of my heart.
After a basic analysis, the reason for Chongqing Songzao "9.27" fire accident is Downhole No. 2 large dip, Serious wear and tear of coal belt. After the belt temperature goes up. Due to the failure of the temperature protection device and smoke detector installed on the belt conveyor, there was no warning or stop of the belt operation. It caused the belt to catch fire and caused the coal on the belt to burn. The toxic and harmful gases produced by the combustion will flow back to the working surface, causing personnel poisoning.
Coal mine safety regulations stipulate that the concentration of carbon monoxide in the air in coal mines shall not exceed 0.0024%, and carbon monoxide will be generated when coal seams are spontaneously combusted or when underground fires occur. We all know that carbon monoxide poisoning is very dangerous. After carbon monoxide is inhaled into the human body, it will combine with the hemoglobin in the human body, and then form carboxyhemoglobin. It can make the hemoglobin in the human body lose the function and function of carrying oxygen, thus it can cause hypoxia and asphyxia. Many coal mine accidents are mostly but the production or leakage of toxic gases such as carbon monoxide has caused staff poisoning and fatal accidents. Therefore, in our daily safety inspections, we must pay special attention to the normal operation and operation of smoke alarms, carbon monoxide alarms and other equipment to provide a safety guarantee for our safety.
HENGKO fixed co alarm is a device to detect co, has the advantage of quick response, high sensitivity, strong anti-interference ability and IP65 grade protective. When the concentration of carbon monoxide exceeds the preset value of the instrument, the detector will immediately send out an audible and visual alarm signal.
HENGKO CO sensor module is a universal gas module designed and manufactured by combining complex electrochemical detection technology with a complex circuit. This component works with a simple driving circuit, which has digital output and analog voltage output, good stability and long life. The measurement result can be read from the microprocessor through the user's I2C interface.
In addition to the fixed carbon monoxide alarm, HENGKO also has a handheld portable gas detector that can continuously detect the concentration of a single gas. The detector adopts pump sampling to detect gas, and the user can choose a suitable rod according to the different requirements of the environment, which makes the measurement more convenient. The display adopts a large-screen OLED dot matrix display, which visually displays the concentration, range and current time of the gas being measured. The simple three-key operation mode and detailed information prompt make the operation more concise and easy to understand.
Post time: Jan-05-2021
