Ultraviolet flame detector for automatic fire extinguishment system

Abstract

An ultraviolet flame detector for an automatic fire extinguishment system is characterized by comprising two same detection passages. Each detection passage comprises five modules including a boost switch power source circuit module, a reconstruction circuit module, a discharge detection circuit module, a test circuit module, a power source module and an interface circuit module. Without a microcontroller and a digital integrated circuit, the ultraviolet flame detector has low requirement for a power supply. Each passage has a full self-checking function and can tell self circuit fault from fire alarm signals so that accurate alarm information can be provided for an automatic fire extinguishment controller. Nearly zero false alarms of products can be assured by the aid of a fire confirmation mechanism, fire disaster can be confirmed only by one fire detector, and the ultraviolet flame detector is high in effectiveness, reliability and reaction speed, simple in structure, firm, safe and applicable to popularization and application.

Description

technical field [0001] The invention relates to a fire detector, in particular to an ultraviolet flame detector for an automatic fire extinguishing system, which has extremely high immunity to false alarms and can provide fast and reliable fire detection in harsh industrial environments and explosive gas environments. monitor. Background technique [0002] Flame detectors are an important part of automatic fire extinguishing systems. They are used in places where fuel, gas, chemicals, ammunition and other inflammables are stored. After decades of development, flame detectors have developed various types. Ultraviolet Flame detector is one of them. Because the energy of ultraviolet rays is very weak, the ultraviolet rays below 280 nanometers in the sunlight spectrum have been absorbed by the atmosphere after passing through the atmosphere. Therefore, the ultraviolet flame detector designed with an ultraviolet photosensitive tube with a center wavelength of 185 nanometers has ...

AI Technical Summary

Problems solved by technology

However, due to the poor ability of this kind of ultraviolet flame detector to resist the interference of special light sources and electromagnetic radiation, it still cannot meet the requirements of use in a highly reliable automatic fire extinguishing system, and the circuit false alarm rate is high. Two detectors are needed to confirm the alarm. , to be further improved

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