| 摘要 |
<p>PURPOSE: To prevent deterioration of inner existing fluids by blowing inactive gas coming from a gas header from a seal surface of a flange to a flange interior direction to intercept an opening section against the atmosphere at a flange separation. CONSTITUTION: A gas blowing nozzle 5 is provided on a flange 1, the nozzle 5 communicating to an annular gas header 2 provided within the flange. The same blowing nozzle 5a and header 2a are also provided at symmetric position to the flange 1 in a flange 1a. Upon separating the flanges 1, 1a, when either of pipes 8, 8a is transferred to an axis direction, gas is blown out from gas blowing jets 4, 4a to a center of the pipe 8, 8a to intercept the atmosphere and the fluids remaining within the pipe.</p> |
