Heat-insulated railway tank cars and a method of making the same |
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| 申请号 | US3653333D | 申请日 | 1970-01-21 | 公开(公告)号 | US3653333A | 公开(公告)日 | 1972-04-04 |
| 申请人 | GEN AM TRANSPORT; | 发明人 | TAYLOR WILLIAM A; | ||||
| 摘要 | There is disclosed a heat-insulated railway tank car and a method of making the same, comprising positioning one or more barriers on an elongated inner liner, the barrier having a flexible portion and a rigid portion, sliding an elongated outer shell onto the inner liner while radially compressing the flexible portion of the barrier, the barrier thus defining separate fluid-tight compartments between the inner liner and the shell, and filling the compartments with an insulating substance. | ||||||
| 权利要求 | 1. A railway tank car comprising an elongated inner liner, an elongated outer shell encircling said inner liner and spaced therefrom, a plurality of substantially rigid annular barriers secured to the outer surface of said inner liner at longitudinally spaced-apart points thereon and each extending around the girth of said liner, a corresponding plurality of substantially flexible annular barriers disposed between said outer shell and said rigid barrier and secured respectively to the outer surface of said rigid barriers and extending therearound, the combined radial thickness of said rigid barrier and said flexible barrier in the unflexed condition thereof being greater than the radial distance between said inner liner and said outer shell, thereby to define separate fluid-tight compartments between said inner liner and said outer shell and separated one from the other by said barrier, and an insulating substance in said compartments. 2. The railway tank car set forth in claim 1, wherein said rigid barrier is a urethane foam. 3. The railway tank car set forth in claim 1, wherein said flexible barrier is an expanded polyethylene foam. 4. A railway tank car comprising an elongated inner liner, an elongated outer shell encircling said inner liner and spaced therefrom, a plurality of substantially rigid annular barriers secured to the outer surface of said inner liner at longitudinally spaced-apart points thereon and each extending around the girth of said liner, a corresponding plurality of substantially flexible annular barriers disposed between said outer shell and said rigid barriers and secured respectively to the outer surfaces of said rigid barriers and extending therearound, each of said flexible barriers being U-shaped in transverse cross section and including a body carrying a pair of spaced radially extending walls, the combined radial thickness of said rigid barrier and said flexible barrier in the unflexed condition thereof being greater than the radial distance between said inner liner and said outer shell, said walls being compressed by said outer shell thereby to define separate fluid-light compartments between said inner liner and said outer shell and separated one from the other by said barrier, and an insulating substance in said compartments. 5. A railway tank car comprising an elongated inner liner, an elongated outer shell encircling said inner liner and spaced therefrom, a plurality of substantially rigid annular barriers secured to the outer surface of said inner liner at longitudinally spaced-apart points thereon and each extending around the girth of said liner, a corresponding plurAlity of substantially flexible annular barriers disposed between said outer shell and said rigid barriers and secured respectively to the outer surfaces of said rigid barriers and extending therearound, each of said flexible barriers being U-shaped in transverse cross section and including a body carrying a pair of spaced radially extending walls, and a band positioned between said walls and against said body and tightened securely to mount said flexible barrier upon said rigid barrier, the combined radial thickness of said rigid barrier and said flexible barrier in the unflexed condition thereof being greater than the radial distance between said inner liner and said outer shell, said walls being compressed by said outer shell thereby to define separate fluid-tight compartments between said inner liner and said outer shell and separated one from the other by said barrier, and an insulating substance in said compartments. |
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