[특허]System for insulating a cryogenic tank and method of insulating said tank

L'Air Liquide Societe Anonyme pour l'Etude Et l'Exploitation des Procedes Georges Claude

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특허 상세정보

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System for insulating a cryogenic tank and method of insulating said tank

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F17C-001/12
미국특허분류(USC)	220/560.12; 220/560.15
출원번호	US-0304657 (2007-04-16)
등록번호	US-8141738 (2012-03-27)
우선권정보	FR-06 52128 (2006-06-14)
국제출원번호	PCT/FR2007/051117 (2007-04-16)
§371/§102 date	20081212 (20081212)
국제공개번호	WO2007/144525 (2007-12-12)
발명자 / 주소	Wiertz, Thierry
출원인 / 주소	L'Air Liquide Societe Anonyme pour l'Etude Et l'Exploitation des Procedes Georges Claude
대리인 / 주소	Cronin, Christopher J.
인용정보	피인용 횟수 : 0 인용 특허 : 8

초록
▼

Cryogenic tank insulation system comprising blocks of insulating materials placed, at low temperature, so as to be essentially touching on one face of the structure of said tank, the blocks being placed between said face of the structure and an impervious deformable wall which defines at least one portion of the volume where the cryogenic fluid is stored and is actuated by return means for returning it to the face of the structure, characterized in that a first portion of the blocks is at ambient temperature in contact with the face of the structure and away from the impervious deformable wall, a second portion of the blocks being at ambient temperature, in contact with the impervious deformable wall and away from the face of the structure, the edges of the blocks of the first portion; and those of the second portion being, at ambient temperature, in partial contact and having complementary shapes so as to form an essentially continuous layer of insulating material at low temperature.

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1. An insulating system for a cryogenic tank comprising blocks of insulating materials disposed, at a low temperature, in a substantially abutting manner on one face of a structure of said tank, the blocks being disposed between said face of the structure and a deformable impervious wall, the deformable and impervious wall delimiting at least part of the volume where the cryogenic fluid is stored and being actuated towards the face of the structure, characterized in that a first part of the blocks is, at ambient temperature, in contact with the face of the structure and away from the deformable impervious wall, a second part of the blocks being, at ambient temperature, in contact with the deformable impervious wall and away from the face of the structure, the edges of the blocks of the first part and those of the second part being, at ambient temperature, in partial contact and having complementary shapes so as to form a substantially continuous layer of insulating material at a low temperature, wherein the first part of the blocks of insulating materials has edges shaped in a bevel at an angle α, the second part of the blocks of insulating materials has edges shaped in a bevel at an angle β, where α is greater than β. 2. An insulating system for a cryogenic tank comprising blocks of insulating materials disposed, at a low temperature, in a substantially abutting manner on one face of a structure of said tank, the blocks being disposed between said face of the structure and a deformable impervious wall, the deformable and impervious wall delimiting at least part of the volume where the cryogenic fluid is stored and being actuated towards the face of the structure, characterized in that a first part of the blocks is, at ambient temperature, in contact with the face of the structure and away from the deformable impervious wall, a second part of the blocks being, at ambient temperature, in contact with the deformable impervious wall and away from the face of the structure, the edges of the blocks of the first part and those of the second part being, at ambient temperature, in partial contact and having complementary shapes so as to form a substantially continuous layer of insulating material at a low temperature, wherein: the edges with complementary shapes are shaped in a bevel; andthe first part of the blocks of insulating materials has edges shaped in a bevel at an angle α, the second part of the blocks of insulating materials has edges shaped in a bevel at an angle β, where α−β=5° to 10°. 3. An insulating system for a cryogenic tank comprising blocks of insulating materials disposed, at a low temperature, in a substantially abutting manner on one face of a structure of said tank, the blocks being disposed between said face of the structure and a deformable impervious wall, the deformable and impervious wall delimiting at least part of the volume where the cryogenic fluid is stored and being actuated towards the face of the structure, characterized in that a first part of the blocks is, at ambient temperature, in contact with the face of the structure and away from the deformable impervious wall, a second part of the blocks being, at ambient temperature, in contact with the deformable impervious wall and away from the face of the structure, the edges of the blocks of the first part and those of the second part being, at ambient temperature, in partial contact and the edges of the blocks of the first part having shapes complementary to those of the blocks of the second part so as to form a substantially continuous layer of insulating material at a low temperature, wherein: each of the blocks of the first part is in contact with the face of the structure and away from the deformable impervious wall via a contact face;each of the blocks of the first part has a non-contact face opposite that of the respective first block contact face;each of the blocks of the first part has edges extending between the respective contact and non-contact first block faces;each of the blocks of the second part is in contact with the deformable impervious wall and away from the face of the structure via a contact face;each of the blocks of the second part has a non-contact face opposite that of the respective second block contact face;each of the blocks of the second part has edges extending between the respective contact and non-contact second block faces; andat ambient temperature, the edges of the blocks of the first part and those of the second part are in partial contact and have complementary shapes so as to form a substantially continuous layer of insulating material at a low temperature. 4. The insulating system of claim 3, wherein the deformable impervious wall is actuated toward the face of the structure due to a difference in pressure between an interior of the cryogenic tank and a space where the blocks of insulating materials are disposed. 5. The insulating system of claim 3, wherein the blocks of insulating materials are substantially parallelepipedal. 6. The insulating system of claim 3, wherein the first part of the blocks in contact with the face of the structure is adhesively bonded to said face of the structure. 7. The insulating system of claim 3, wherein the deformable impervious wall consists of a polymeric film. 8. The insulating system of claim 3, wherein the first part of the blocks of insulating materials forms a frame within which the second part of the blocks of insulating materials is inserted. 9. The insulating system of claim 3, wherein the contact faces of the blocks of the second part are bowed at ambient temperature, having a concave curvature with respect to the structure. 10. The insulating system of claim 3, wherein the structure of the tank has an impervious film in contact with which the first part of the blocks of insulating materials is disposed. 11. The insulating system of claim 3, wherein the system includes a pumping port designed to allow a vacuum to be created between the structure of the cryogenic tank and the deformable impervious wall. 12. The insulating system of claim 3, wherein the insulating system has flanges at its ends that connect the structure and the deformable impervious wall together. 13. The insulating system of claim 3, wherein the blocks of insulating materials are polygonal. 14. The insulating system of claim 3, wherein the deformable impervious wall is made of a polyimide. 15. The insulating system of claim 3, wherein, at low temperature, the blocks of the first and second parts form a substantially continuous single layer of insulating material.

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System for insulating a cryogenic tank and method of insulating said tank

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System for insulating a cryogenic tank and method of insulating said tank

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