IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0055061
(2009-07-17)
|
등록번호 |
US-8646641
(2014-02-11)
|
우선권정보 |
GB-0813314.2 (2008-07-21) |
국제출원번호 |
PCT/GB2009/050878
(2009-07-17)
|
§371/§102 date |
20110120
(20110120)
|
국제공개번호 |
WO2010/010377
(2010-01-28)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Swire Oilfield Services Limited
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
46 인용 특허 :
6 |
초록
▼
The invention relates to a tank for storing fluid. In one embodiment, a tank (10) for storing fluids is disclosed, the tank comprising a vessel (12) for receiving and storing fluid, and a reinforcing structure (14) for the vessel. The reinforcing structure is located externally of the vessel. The ve
The invention relates to a tank for storing fluid. In one embodiment, a tank (10) for storing fluids is disclosed, the tank comprising a vessel (12) for receiving and storing fluid, and a reinforcing structure (14) for the vessel. The reinforcing structure is located externally of the vessel. The vessel has a generally quadrilateral shape in plan view, and a base (16) which is generally dish-shaped, with an outlet (18) located in a position which facilitates discharge of the fluid from the vessel. In providing a tank having a vessel which is generally quadrilateral shape in plan view, the tank offers benefits over prior cylindrical tanks in terms of maximizing the use of available storage space on a ship, or on a vehicle used to transport the tank. Additionally, in providing a tank having a vessel which has a base that is generally dish-shaped, the tank offers improvements over prior quadrilateral shape tanks. In particular, the tank may be cheaper and easier to construct; may be capable of supporting higher pressures; and/or makes better use of available storage space, due to the curved nature of the base.
대표청구항
▼
1. A tank which can store pressurised fluids, the tank comprising: a vessel for receiving and storing a pressurised fluid; anda reinforcing structure for the vessel, the reinforcing structure located externally of the vessel;wherein the vessel has a generally quadrilateral shape in plan view, a base
1. A tank which can store pressurised fluids, the tank comprising: a vessel for receiving and storing a pressurised fluid; anda reinforcing structure for the vessel, the reinforcing structure located externally of the vessel;wherein the vessel has a generally quadrilateral shape in plan view, a base which is generally dish-shaped with an outlet located in a position which facilitates discharge of the fluid from the vessel and a generally dish-shaped top; andwherein the base and the top of the vessel are each convex and have a shape which corresponds to part of a surface of a sphere, wherein the base has a continuous curvature from the outlet to an entire perimeter of the base, to resist deformation under applied fluid pressure loading, and wherein a radius of the curvature has a geometric centre located above the vessel. 2. A tank as claimed in claim 1, in which a radius of the curvature of the base is constant in a direction extending around a circumference of the base. 3. A tank as claimed in claim 1, comprising four planar side walls. 4. A tank as claimed in claim 1, in which the outlet is located at a position which is lowermost of the base. 5. A tank as claimed in claim 4, in which the outlet is located at a centre point of the base. 6. A tank as claimed in claim 1, in which the reinforcing structure comprises a reinforcing frame having a base, a top and four sides, and in which the sides of the frame are located in abutment with corresponding side walls of the vessel. 7. A tank as claimed in claim 6, in which at least one of the base and the top of the frame abuts the vessel. 8. A tank as claimed in claim 1, in which side walls of the vessel are each shaped such that at least part of a lower edge of each side wall overlaps the corresponding edge of the base of the vessel. 9. A tank as claimed in claim 8, in which edges of the base extend up inner surfaces of the side walls. 10. A tank as claimed in claim 1, wherein a radius of the curvature of the base is from 3 to 5 meters. 11. A tank which can store pressurised fluids, the tank comprising: a vessel for receiving and storing a pressurised fluid; anda reinforcing structure for the vessel, the reinforcing structure located externally of the vessel;wherein the vessel has a generally quadrilateral shape in plan view, a base which is generally dish-shaped with an outlet located in a position which facilitates discharge of the fluid from the vessel and a generally dish-shaped top; andwherein the base and the top of the vessel are each convex and have a shape which corresponds to part of a surface of a sphere, wherein the base has a continuous curvature from the outlet to edges of the base and wherein a radius of the curvature has a geometric centre located above the vessel, to resist deformation under applied fluid pressure loading;the tank further comprising doubler plates welded to the base of the vessel, and wherein the reinforcing structure comprises a reinforcing frame having a base with cross-beams and cradles resting upon and welded to the cross-beams,the cradles being welded to the doubler plates and having arcuate support surfaces which are shaped to correspond to the shape of the base to provide support for the vessel under the applied load of a pressurised fluid in the vessel. 12. A tank which can store pressurised fluids, the tank comprising: a vessel for receiving and storing a pressurised fluid; anda reinforcing structure for the vessel, the reinforcing structure located externally of the vessel;wherein the vessel has a generally quadrilateral shape in plan view, a base which is generally dish-shaped with an outlet located in a position which facilitates discharge of the fluid from the vessel and a generally dish-shaped top;wherein the base and the top of the vessel are each convex and have a shape which corresponds to part of a surface of a sphere, to resist deformation under applied fluid pressure loading;the tank further comprising doubler plates welded to the base of the vessel, and wherein the reinforcing structure comprises a reinforcing frame having a base with cross-beams and cradles resting upon and welded to the cross-beams,the cradles being welded to the doubler plates and having arcuate support surfaces which are shaped to correspond to the shape of the base to provide support for the vessel under the applied load of a pressurised fluid in the vessel;the tank further comprising doubler plates welded to the top of the vessel, and wherein the reinforcing frame has a top with cross-beams and cradles welded to the cross-beams, the cradles being welded to the doubler plates and having arcuate support surfaces which are shaped to correspond to the shape of the top to provide support for the vessel under the applied load of a pressurised fluid in the vessel. 13. A tank which can store pressurised fluids, the tank comprising: a vessel for receiving and storing a pressurised fluid; anda reinforcing structure for the vessel, the reinforcing structure located externally of the vessel;wherein the vessel has a generally quadrilateral shape in plan view, a base which is generally dish-shaped with an outlet located in a position which facilitates discharge of the fluid from the vessel and a generally dish-shaped top; andwherein the base and the top of the vessel are each convex and have a shape which corresponds to part of a surface of a sphere, wherein the base has a constant curvature from the outlet to an entire perimeter of the base, to resist deformation under applied fluid pressure loading, and wherein a radius of the curvature of the base is constant in a direction extending radially from the outlet of the base towards the perimeter of the base. 14. A tank as claimed in claim 13, in which a geometrical centre of the radius of curvature is located vertically above a centre point of the base. 15. A tank as claimed in claim 13, in which a geometrical centre of the radius of curvature is spaced laterally from a line extending vertically from a centre point of the base. 16. A tank as claimed in claim 13, wherein the radius of the curvature has a geometric centre located above the vessel. 17. A tank which can store pressurised fluids, the tank comprising: a vessel for receiving and storing a pressurised fluid, the vessel comprising doubler plates welded to a base of the vessel;a reinforcing structure for the vessel, the reinforcing structure located externally of the vessel and comprising a reinforcing frame having a base, a top and four sides, and in which the sides of the frame are located in abutment with corresponding side walls of the vessel;wherein the base of the reinforcing frame comprises cross-beams and cradles resting upon and welded to the cross-beams, the cradles being welded to the doubler plates and having arcuate support surfaces which are shaped to correspond to the shape of the base to provide support for the vessel under the applied load of a pressurised fluid in the vessel;wherein the vessel has a generally quadrilateral shape in plan view, a base which is generally dish-shaped with an outlet located in a position which is lowermost of the base to facilitate discharge of the fluid from the vessel, and a generally dish-shaped top;wherein the base and the top of the vessel are each convex and have a shape which corresponds to part of a surface of a sphere, to resist deformation under applied fluid pressure loading;wherein a radius of curvature of the base is constant in a direction extending radially from a centre of the base towards an edge of the base; andwherein the side walls of the vessel are each shaped such that at least part of a lower edge of each side wall overlaps a corresponding edge of the base of the vessel. 18. A tank as claimed in claim 17, comprising doubler plates welded to the top of the vessel, and wherein the reinforcing frame has a top with cross-beams and cradles welded to the cross-beams, the cradles being welded to the doubler plates and having arcuate support surfaces which are shaped to correspond to the shape of the top to provide support for the vessel under the applied load of a pressurised fluid in the vessel. 19. A tank as claimed in claim 17, comprising four planar side walls. 20. A tank as claimed in claim 17, in which edges of the base extend up inner surfaces of the side walls.
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