LeL online explosion-proof system

Abstract

The invention discloses a LeL online explosion-proof system. The LeL online explosion-proof system comprises an online monitoring system, an execution operating system, an infrared camera system, a sensor system, a standby power supply module and a host, and the host comprises a PLC control system, an MCGS configuration monitoring system and a data storage module, and further comprises a visual interface unit and the execution operating system, wherein the visual interface unit, the execution operating system and the data storage module are in data connection with the MCGS configuration monitoring system through wires, the MCGS configuration monitoring system and the execution operating system are electrically connected with the PLC control system through wires, and the input end of the host is electrically connected with the output end of the online monitoring system through a wire. The explosion-proof monitoring data on-line monitoring system is dispatched and managed, automatic dataacquisition of multiple groups of on-line monitoring systems is ensured, large-scale service support and data collection are completed, and login users in all places can carry out real-time on-line monitoring on the whole explosion-proof system in real time.

Description

Technical field [0001] The present invention belongs to the technical field of explosion-proof system, and specific relates to a Lel online explosion-proof system. Background technique [0002] The combustible gas encounters the highest concentration of the fire explosion in the air, called the explosion limit - abbreviated as * # * uel * #; explosion lower LEL is an important indicator of combustible gas alarm and combustible gas detector; if the flammable gas The gas is between the lower limit of the explosion and the upper limit of the explosion, and the following three conditions are established, and the explosion will explode; 1 combustible material (gas); 2 combustion (oxygen); 3 ignition source (temperature); the alarm concentration is generally set * # * 25% lel * # * below the lower limit of the explosion; the fixed flammable gas detector is usually provided with two alarm points (specific value related to the model number of the alarm host): * # * 10% LEL * # * is one L...

AI Technical Summary

Problems solved by technology

[0002] The highest concentration of combustible gas in the air when it encounters an open fire is called the upper limit of explosion - referred to as "UEL"; the lower limit of explosion LEL is an important indicator of combustible gas alarms and combustible gas detectors; Between the explosion limit and the following three conditions, an explosion will occur: 1 combustible (gas); 2 combustible (oxygen); 3 ignition source (temperature); the alarm concentration is generally set at the lower limit of the explosion Below 25% LEL"; fixed combustible gas detectors usually have two alarm points (the specific value is related to the model of the alarm host): "10% LEL" is the first level alarm, "25% LEL" is the second level alarm ; Portable combustible gas detectors usually have an alarm point: "25% LEL" is the alarm point; what do "10% LEL" and "25% LEL" mean here? Let's give an example. For example, the lower explosion limit of methane is "5%" volume ratio (that is, the lower explosion limit is reached when the volume content of methane in the air reaches 5%). Divide this "5%" volume ratio into one hundred equal parts, let "5%" volume ratio corresponds to "100% LEL", that is to say, when the detector value reaches the "100% LEL" alarm point, it is equivalent to the methane content at this time is "5%" volume ratio; when the combustible gas detection When the instrument value reaches the "25%LEL" alarm point, it is equivalent to the volume ratio of "1.25%" methane at this time, and the current LEL flammable alarm equipment and system cannot carry out online real-time detection, and cannot carry out some series based on the Internet of Things Advanced fire protection and evacuation alarm voice system, so that when an accident occurs, there is no good personnel evacuation system, and when the main power supply mechanism fails, there is no auxiliary backup power system, which makes the later safety hazards greater

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