| 摘要 |
A Tank and Pressure Vessel Skirt Ratchet Prevention Device for the reduction or elimination of relative deflection of a tank or vessel (29) skirt (25) is presented. In vertical tank or vessel (29) design where the tank shell (23) and the tank or vessel (29) bottom (22) are connected together by a knuckle (24) it is common to place a skirt (25) and skirt base plate (26) under the shell. The skirt (25) and skirt base plate (26) support the tank or vessel (29) structure, product and transmit these and environmental loads and anything on tank shell (23) into the foundation (21). Cyclic loads change the diameter of the skirt, (25) the tank shell (23) and skirt base plate (26). The addition of a ratchet prevention member (27) or an anti-friction device (30) reduces relative deflection and fatigue at these locations.
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