Pipeline flame arrestor

Details Pipeline flame arrestor Pipeline flame arrestor

1978-07-03

1980-03-11

Bashore, S. Leon

Gas: heating and illuminating

Distribution

Safety devices

137334, 138 44, 165 1, 165174, 165DIG14, F17D 102, F17D 104

Patent

active

041926587

ABSTRACT:
A flame arrestor directs the gas stream to flow through an array of narrow tubes immersed in a normally liquid heat transfer fluid. The gas composition flowing through the flame arrestor is normally maintained at the ambient temperature of such liquid. Even if a flame front enters either connection for the flame arrestor, the cooling effectively quenches the flame before the flame front can advance through the liquid-cooled narrow tubes to the other connector of the flame arrestor, because such a large amount of liquid must be evaporated before the flame arrestor can be heated above the boiling point of the liquid. At both the inlet and outlet zones, where there is a transition between the relatively large cross-sectional area of the array of tubes and the smaller pipes for connecting to the pipeline, a hollow, liquid-cooled member serves as an internal baffle for such transition zone. The gas velocity through the transition zone is thus maintained about as fast as in the pipeline, thus decreasing the likelihood of a slow-moving flame front. Moreover, no hot spots can develop in the transition zone because of the liquid cooling therein.

REFERENCES:
patent: 1259029 (1918-03-01), Lucke
patent: 1887093 (1932-11-01), Harnett et al.
patent: 2087170 (1937-07-01), Stephenson
patent: 2602647 (1952-07-01), Miller
patent: 3552487 (1971-01-01), Tokumitsu et al.
patent: 3763262 (1972-10-01), Sato et al.
patent: 3830063 (1974-08-01), Morgan
patent: 4078292 (1978-03-01), Porter

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