A storage tank assembly for storage of cryogenic liquids including a first outer tank and a second, inner tank, the first and second tanks being spaced apart from one another to form an insulation space therebetween. Each of the first and second tanks has a first end, and an opposite second end spac
A storage tank assembly for storage of cryogenic liquids including a first outer tank and a second, inner tank, the first and second tanks being spaced apart from one another to form an insulation space therebetween. Each of the first and second tanks has a first end, and an opposite second end spaced apart from the first end, and a wall extending from the first end to the second end. The assembly further includes a pipe work system comprising a plurality of pipes and a first connector extending through the wall of the first tank, the pipe work being connectable to the first connector such that the pipe work is spaced apart from the wall of the first tank.
대표청구항▼
1. A storage tank assembly for the storage of cryogenic liquids comprising a first outer tank and a second inner tank, the first and second tanks being spaced apart from one another to form an insulation space, the storage tank assembly further comprising a cryogenic liquid delivery system comprisin
1. A storage tank assembly for the storage of cryogenic liquids comprising a first outer tank and a second inner tank, the first and second tanks being spaced apart from one another to form an insulation space, the storage tank assembly further comprising a cryogenic liquid delivery system comprising an eductor located within the second inner tank so as to entrain cryogenic vapour during filling of the inner tank with cryogenic fluid, wherein the storage tank assembly further comprises an ullage vessel contained within the second tank and comprising a first aperture and an opposite second aperture, whereby, in use, the first aperture is located below the second aperture, and is larger than the second aperture, wherein the ullage vessel has an upper face and a lower face with the upper face thereof in facing relationship to a top wall defining the second inner tank, and at least said second aperture is comprised of a breathing hole that is open to an interior of the second inner tank and wherein the eductor is positioned outside the ullage vessel and is operatively isolated therefrom. 2. A storage tank assembly according to claim 1 wherein each of said first and second apertures is comprised of a breathing hole that is open to the interior of the second inner tank. 3. A storage tank assembly according to claim 2 wherein the second aperture, which has a smaller size than the first aperture, controls the rate at which liquid enters or drains out of the ullage tank, and the first aperture of the ullage vessel allows for faster pressure equalisation between the ullage vessel and the inner tank. 4. A storage tank assembly according to claim 1 wherein each of the first and second tanks has a first end, and an opposite second end spaced apart from the first end, and a wall extending from the first end to the second end. 5. A storage tank assembly according to claim 4 further comprising a first connector extending through the wall of the first tank for allowing connection of pipes to the tank assembly. 6. A storage tank assembly according to claim 5 comprising a plurality of pipes connectable directly or indirectly to the first connector, the plurality of pipes comprising a first pipe work system connectable to the first connector such that the first pipe work system is spaced apart from an outer surface of the wall of the first tank, and a second pipe work system connectable to the first connector such that the second pipework system is located in the insulating space, and spaced apart from an inner surface of the wall of the first tank, and an outer surface of the wall of the second tank. 7. A storage tank assembly according to claim 6 further comprising a second connector extending through the wall of the second tank, the second pipe work system being connectable to the second connector, and to the first connector. 8. A storage tank assembly according to claim 1 wherein the ullage vessel is a separate self-contained vessel that is disposed within but supported from the second inner tank. 9. A storage tank assembly according to claim 8 wherein all walls forming the ullage vessel are separate from any wall defining the second inner tank. 10. A storage tank assembly according to claim 8 wherein the ullage vessel is positioned so that when the storage tank assembly is mounted horizontally, the entire ullage vessel is disposed above a horizontal center axis of the tanks. 11. A storage tank assembly according to claim 10 wherein the lower face of the ullage vessel is disposed a greater distance from the horizontal center axis than the space defined between the upper face of the ullage vessel and an inner surface of the inner tank wall. 12. A storage tank assembly according to claim 11 wherein the ullage vessel is positioned high up in the inner tank with the upper face of the ullage vessel being disposed spaced from but as close as possible to an apex of the inner tank. 13. A storage tank assembly according to claim 1 including bracket means for mounting the upper face of the ullage vessel to the tank wall. 14. A storage tank assembly according to claim 1 including a pair of ullage vessels that are disposed along a common axis and that are spaced apart with the educator spaced from each of the ullage vessels but disposed therebetween. 15. A storage tank assembly according to claim 1 including a first pipe work system mounted externally of the outer tank and a second pipe work system that is mounted within the insulation space between the tanks. 16. A storage tank assembly according to claim 15 wherein the second pipe work system includes a pipe for supporting the educator that extends downwardly from a support connector. 17. A storage tank assembly according to claim 16 including a dispersing plate device mounted below the educator for causing a spray to be formed for enhancing vapour condensation. 18. A storage tank assembly according to claim 1 including a plurality of first apertures extending through the lower face. 19. A storage tank assembly according to claim 18 including only a single second aperture extending through the upper face. 20. A storage tank assembly according to claim 1 including a first connector extending through the wall of the outer tank for allowing connection of pipes to the tank assembly, and further comprising a plurality of pipes connectable directly or indirectly to the first connector, the plurality of pipes comprising a first pipe work system connectable to the first connector such that the first pipe work system is spaced apart from an outer surface of the wall of the first tank, and a second pipe work system connectable to the first connector such that the second pipework system is located in the insulating space, and spaced apart from an inner surface of the wall of the first tank, and an outer surface of the wall of the second tank.
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