| 摘要 |
PURPOSE:To enhance the reliability of sealing construction, by inserting a small metallic tube into a charge-discharge hole of fluid in the wall of a vessel so as to both airtightly form the peripheral surface of the small metallic tube to be adhesively and integrally attached to the internal surface of the charge-discharge hole and provided in the charge-discharge hole a guide hole of a pin for crushing the small metallic tube. CONSTITUTION:A charge-discharge hole 3 for charging fluid into and discharging it from a vessel is provided in either a vessel wall 1 or an end face wall 2, and a sealing small metallic tube 4 is inserted into the charge-discharge hole 3. The peripheral surface of the small metallic tube 4 and the internal wall surface of the charge-discharge hole 3 are airtightly formed to be adhesively and integrally attached by means of welding or the like. A guide hole 6 for a small metallic tube crushing pin 8 is drilled to be concurrently provided with the charge-discharge hole 3. The construction of a sealed part is completed by crushing the sealing small metallic tube 4 by the crushing pin 8, forced to be put into the guide hole 6 for the crushing pin, so as to completely seal the pressure vessel. |
