SPRING-LOADED SECONDARY SEAL FOR FLOATING-ROOF STORAGE TANK

摘要

A LOW-PROFILE SECONDARY SEAL FOR FLOATING-ROOF STORAGE TANKS HAS A TIP SEAL THAT INCLUDES A SERIES OF SEGMENTAL ADAPTER PLATES CONNECTED TO THE SHOE PLATES (18). A TIP SEAL ELEMENT (32) IS MOUNTED ON THE ADAPTER PLATES. (34). A FABRIC (36) EXTENDS BETWEEN THE TIP SEAL AND THE FLOATING ROOF (12). A PUSHER (40) IS HINGED TO THE FLOATING ROOF, AND INCLUDES A PUSHER BAR (46) WITH TWO ENDS THAT ARE DISPOSED IN A SLIDING ARRANGEMENT AGAINST THE ADAPTER PLATES. A SPRING (38) IS CONNECTED TO THE PUSHER AT AN INCLINED ANGLE, PROVIDING A MECHANICAL ADVANTAGE AS THE SPRING BIASES THE PUSHER AND PUSHER BAR OUTWARDLY AGAINST THE PLATES, PRESSING THE TIP SEAL AGAINST THE TANK SHELL (14).