| 摘要 |
A rapidly replaceable non-return device ( 110 ) for a petrochemical refinery reactor ( 112 ), of the type comprising: a support tube ( 114 ), connected to a portion of the reactor ( 112 ), this support tube ( 114 ) being provided internally with a cartridge ( 116 ) containing a ball ( 118 ), the cartridge ( 116 ) having, around an inlet hole ( 121 ) for a processed fluid, a seat ( 122 ) for housing the ball ( 118 ), and having slots ( 120 ) for the outflow of the said processed fluid; the cartridge ( 116 ) is fitted removably in the support tube ( 114 ).
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