▎ 摘　　要

NOVELTY - Non-steady state detonation fire arrestor comprises symmetrically arranged reducing pipe (1), connecting pipe (101), connecting ring (3) clamped between two extension tubes (103), and fire retardant ring hermetically connected with the extension tube (103). Two ends of the fire ring are fixedly provided with a first fire-retardant assembly. A second fire- retardant assembly is rotatably provided between two of the first fire retardent assemblies. A rotating rod (307) is fixedly connected with a rotating rod. A ratchet wheel (308) fixedly set on an end of the rotating rod far away from the second fire extinguant assembly, and a first connecting component. A spraying component is provided with graphene powder. The spraying component automatically ejeces the spraying graphene powder to the first and second fire retardants under the action of centrifugal force. USE - Non-steady state detonation fire arrestor used in hydrogen energy industry chain for storage and transportation of hydrogen and waste treatment in production of hydrogen energy. ADVANTAGE - The non-steady state detonation fire arrestor is convenient for processing and assembling and buffering the impact of the flame, so it can be used for the pipeline with undetermined ignition source position, and there is no limit to the number of the bent pipe and the numbers of the valve, it effectively improves the efficiency of the fire arrestingor in the fire resistance element heat absorption, so as to increase the fire retardant efficiency and effectively prevent the propagation of non-stable detonation. The gas in the sliding cavity enters into the injection rod to effectively impact the graphene powder, increasing the range of graphene powder spraying to effectively promote the flame retardant effect of the retardant, at the same time, when the spraying rod is thrown out, the stirring blade is matched with the driving groove through the driving rod to stir the driving DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a non-steady state detonation fire arrestor for use in hydrogen energy industry chain. 1Reducing pipe 101Connecting pipe 103Extension tubes 307Rotating rod 308Ratchet wheel