| 摘要 |
<p>[PROBLEMS] To provide a feed-through for feeding electric power to a submerged pump installed in a tank for cryogenic liquefied gases such as LNG and LPG. The feed-through has a simple structure and can check for leakage of the gases and air at low cost. [MEANS FOR SOLVING THE PROBLEMS] In the feed-through (50), a bushing (16) made of an insulating material is inserted in the bushing insertion hole (14) of a flange (12), and a conductor (18) is inserted in the hollow part of the bushing. A gap between the flange and each end of the bushing insertion hole and a gap between each end of the bushing and the conductor are sealed airtight by seal members (20, 22, 24, 26). A through-hole (52) is formed in the wall of the bushing, and a space part (54) communicating with the through-hole is formed in the flange. The pressure in the space part of the flange is detected by a pressure detector (56).</p> |
