Flexible hose assembly with joint

A flexible joint apparatus for prevention of explosion comprising:

• a bellows tube including an extension section integrally formed at one end of the bellows tube and an annular protrusion interposed between the extension section and the bellows tube;
• a coupling nut coupled with the bellows tube while being prevented from being separated from the bellows tube by the annular protrusion;
• and
• a connection member coupled with the bellows tube while being supported by the annular protrusion such that the connection member is screw-coupled with the coupling nut,
• wherein a perforation hole is formed in the connection member in order to insert the extension section, and screw sections are formed at each end of the connection member,
• wherein a gap is formed between an outer surface of the extension section and an inner surface of the connection member and gas discharged from the bellows tube flows along the outer surface of the extension section through the gap and is discharged to an outside through a screw coupling section between the connection member and the coupling nut.