Optical fiber type integrated distributed temperature and gas leakage safety monitoring system and application thereof

Abstract

The invention discloses an optical fiber type integrated distributed temperature and gas leakage safety monitoring system and application thereof. The system comprises a signal acquisition module and a signal demodulation module. The signal acquisition module comprises a gas environment detection unit and a transmission detection optical fiber; the transmission detection optical fiber is provided with a temperature detection and / or vibration detection sensing element, and a detected temperature and / or vibration signal and a gas environment signal detected by the gas environment detection unit are transmitted to the signal demodulation module through the transmission detection optical fiber; the signal demodulation module comprises a gas signal demodulation part, a temperature signal demodulation part and / or a vibration signal demodulation part and a signal demodulation optical switch; and the signal demodulation optical switch is used for time-sharing switching of the gas signal demodulation part, the temperature signal demodulation part and / or the vibration signal demodulation part. According to the invention, passive environment monitoring can be realized, the remote monitoring safety performance is high, electromagnetic interference is avoided, conditions of various dimensions such as environment gas, temperature / vibration and the like can be fed back in time, and the invasiveness is weak.

Description

Technical field

[0001] The present invention belongs to a petrochemical park or a safe monitoring technology of a cold storage industry or a refrigerated transportation vessel with liquid ammonia, and is particularly related to ambient gas, temperature, and vibration disturbance of optical fiber safety monitoring system.Background technique

[0002] Petrochemical park, liquid ammonia refrigeration, cold storage industry or refrigerated transport boat has flammable and explosive gas, toxic and harmful substances leak risk, how to improve safety factors in an all-round, reliable monitoring technology. Take ammonia gas as an example, it is a colorless gas having a stimulating odor, which is very susceptible to water, and the aqueous solution is alkaline, and is easy to liquefy. Ammonia is widely used in the production of refrigeration, industrial desulfurization, but ammonia leaks may have great harm to atmospheric quality, human health. In many chemical park pollution factors, ammonia accou...

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