Urban underground utility tunnel system capable of carrying out safety protection by nitrogen

Abstract

The invention discloses an urban underground utility tunnel system capable of carrying out safety protection by nitrogen. The system comprises a nitrogen supply device (10), a nitrogen conveying pipeline (20) and an underground utility tunnel (30), wherein the nitrogen supply device (10), the nitrogen conveying pipeline (20) and the underground utility tunnel (30) are connected in sequence; the nitrogen conveying pipeline (20) is provided with a nitrogen control valve; and the nitrogen conveying pipeline (20) can convey nitrogen in the nitrogen supply device (10) into the underground utility tunnel (30). The urban underground utility tunnel system capable of carrying out the safety protection by the nitrogen simultaneously has two functions of electric cabin fire extinguishment and naturalgas cabin explosion suppression. Compared with a hot aerosol and superfine dry powder fire extinguishment system, the system disclosed by the invention has the advantages that investment is low and fire extinguishing agents can be permanently stored, do not lose efficacy and do not need to be replaced. Compared with a CO2 fire extinguishment system, the system disclosed by the invention has the advantages of low investment and high safety for people and has an extremely good prospect.

Description

technical field [0001] The invention relates to an urban underground comprehensive pipe gallery system which uses nitrogen for safety protection. Background technique [0002] The urban underground comprehensive pipe gallery includes electric cabins, water heating cabins, sewage cabins, and gas cabins. There are a large number of cables laid in the electric cabins, which will cause electrical fires, and natural gas pipelines are laid in the gas cabins. Once the natural gas leaks, an explosion accident will occur. , so the electric cabin and gas cabin are more dangerous, and certain protective measures should be taken. At present, electric cabins mainly use hot aerosol or ultra-fine dry powder to extinguish fires, while gas cabins have no measures to suppress natural gas explosions. Hot aerosols or ultra-fine dry powders are chemically synthesized agents, which are expensive and have an expiry date. After the expiry date of the agent, new agents need to be replaced, and new ...

AI Technical Summary

Problems solved by technology

Hot aerosols or ultra-fine dry powders are chemically synthesized agents, which are expensive and have an expiry date. After the expiry date of the agent, it is necessary to replace the new agent, and to purchase new agents requires additional expenses.

At the same time, the hot aerosol or ultra-fine dry powder will pollute the environment after spraying, which is not clean enough and environmentally friendly

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