Process for building a tank and devices for executing the process
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B23K-031/02
E04H-007/00
E04H-007/06
E04H-007/30
B23K-037/02
B23K-037/04
E02D-027/38
E02D-031/00
E02D-035/00
E04H-007/04
F16M-011/00
F16M-013/00
출원번호
US-0236731
(2013-04-03)
등록번호
US-9133640
(2015-09-15)
우선권정보
AR-P20120101191 (2012-04-04)
국제출원번호
PCT/ES2013/070219
(2013-04-03)
국제공개번호
WO2013/150168
(2013-10-10)
발명자
/ 주소
Cantoni, Marcelo Ricardo
Cantoni, Sebastián
출원인 / 주소
CANTONI GRUAS Y MONTAJES S.R.L.
대리인 / 주소
RatnerPrestia
인용정보
피인용 횟수 :
2인용 특허 :
18
초록▼
The invention relates to a method for building cylindrical structures, preferably made of metal, on the basis of the construction methods referred to as “a method which begins the assembly by the top structure”, which provides high levels of safety in the various steps to be carried out. The method
The invention relates to a method for building cylindrical structures, preferably made of metal, on the basis of the construction methods referred to as “a method which begins the assembly by the top structure”, which provides high levels of safety in the various steps to be carried out. The method uses a shaping device for shell sheets, at least one stationary cabin for vertically aligning and welding sheets, movable cabins for horizontally welding the inside and outside, and supporting base devices which in combination provide a safe and comfortable working environment for the operators, as well as greater speed and finish quality for the tank to be built, even under harsh weather conditions.
대표청구항▼
1. A process for building a tank by “from top to down assembly”, wherein the tank is built by welding several rings to one another, wherein each ring comprises a plurality of metal sheets joined together, the tank building process comprising: placing supporting base devices in a circle which defines
1. A process for building a tank by “from top to down assembly”, wherein the tank is built by welding several rings to one another, wherein each ring comprises a plurality of metal sheets joined together, the tank building process comprising: placing supporting base devices in a circle which defines a periphery of a tank to be built, linking said supporting base devices by horizontal rails;forming a ring strip by welding said metal sheets in at least one fixed cabinet for vertical welding and alignment of said metal sheets;said welding of the metal sheets comprising a step in which said metal sheets are aligned vertically by at least two vertical presses;said welding of the metal sheets being performed by welding robots sliding along vertical calibrated rails on opposing sides of said vertical presses to form the ring strip;joining ends of the ring strip together to form a first ring; andraising the first ring up to an upper ring wherein the forming of another ring strip could be simultaneous performed with horizontal welding between the first ring and the upper ring;wherein each supporting base device comprises at least two ring strip guiding devices, one guiding device on an internal circle which defines a final size of the tank and the other guiding device on an external circle, wherein ring strips are received on the guiding devices on the external circle while the joining to form the first ring, the raising, and the horizontal welding are taking place on the guiding devices on the inner circle. 2. The process for building a tank according to claim 1, further comprising the following steps: a) preparing a base of the tank and building a tank floor;b) placing stretchers for access and exit of personnel, tools and materials at selected points on the periphery of the tank to be built between said supporting base devices;c) placing at least one ring strip forming device along with the at least one fixed cabinet for the vertical welding and alignment of the metal sheets tangentially to the periphery of the tank to be built;d) moving said strip of metal sheets while being formed into said ring strip onto said supporting base devices on the external circle and then transporting said ring strip to the internal circle; wherein a total length of said strip of metal sheets is at least equal in length to a circumference of a desired ring;e) the joining of the ends of the ring strip is performed on said supporting base devices by vertical welding a seam between the ends of the ring strip;f) optionally, building a roof of the tank attached to an upper end of said upper ring and to first stretches of internal support columns of the tank to form a first set;g) placing collapsible hoisting devices along the inner circle on an internal side of the tank and next to each of said first stretches of internal support columns of the tank, said first stretches of internal support columns being of a length equal to a height of said ring strip;h) forming a following ring strip in said fixed cabin of vertical welding and alignment of metal sheets and placing said following rings strip externally on said supporting base devices on the external circle at the same time that the joining to form the first ring, the raising, and the horizontal welding are carried out;i) lifting by said collapsible hoisting devices the first set and the first ring;j) moving said following ring strip to a final position on the internal circle and performing a last vertical welding to finish shaping said following ring strip into a following ring;k) lowering the set onto said following ring by said collapsible hoisting devices, and placing spacers between the set and the following ring;l) welding a lower rim of the first ring with an upper rim of said following ring and welding new stretches of support columns to said first stretches of internal support columns;m) repeating steps h to l as many times as necessary to obtain a desired height for the tank;n) removing the supporting base devices from the periphery of the tank and said stretchers for the access and exit of personnel, tools, and materials;o) using said collapsible hoisting devices, lowering the set of ring strips-roof-stretches of internal columns so that the collapsible hoisting devices rests on the tank floor;p) removing said collapsible hoisting devices and welding a lower rim of a lowest ring and of bases of lowest stretches of the internal support with the tank floor; andq) performing minor operations to finish the tank. 3. The process for building a tank according to claim 2, wherein ring strips are formed by means of the ring strip forming device that comprises a double T base, legs of adjustable height, rollers to guide the metal sheets, and the at least one fixed cabinet for vertical welding and alignment of metal sheets; wherein said base is of a greater length than a length of each metal sheet forming the ring strip; andsaid legs of adjustable height are placed in pairs on opposing sides of the base and comprise hydraulic, pneumatic, or mechanical pistons. 4. The process for building a tank according to claim 3, wherein said rollers to guide metal sheets of said ring strip forming device for rings are positioned on said double T base horizontally and perpendicularly to a main axis of the double T base and vertically to each side of the base, in pairs, separated by a distance greater than a width of the metal sheets forming the ring strip and at different heights to allow movement of the metal sheets placed vertically. 5. The process for building a tank according to claim 1, wherein said at least one fixed cabinet for vertical welding and alignment of metal sheets is a closed cabinet having enough room to accommodate at least one operator and at least one set of welding equipment and with openings on opposite sides of the closed cabinet so that the double T base and the metal sheets can extend through the openings, comprising: a) the at least two vertical presses are selected from the group comprising hydraulic, pneumatic, or mechanical presses and placed in such a manner that each press presses one of the metal sheets to keep the metal sheets aligned at a distance in order to perform the vertical welding between the metal sheets;b) the calibrated vertical rails located in such a manner that the calibrated vertical rails allow the movement of the welding robots along said calibrated vertical rails;c) accessory systems selected from the group comprising internal air conditioning control, lighting control, welding quality control, sheet positioning control, remote control systems, monitoring systems, and welding robot control system; andd) optional coatings for the walls and roof selected from thermal and acoustic insulation. 6. The process for building a tank according to claim 2, wherein each of said supporting base devices further comprises a supporting body and at least one leveling element. 7. The process for building a tank according to claim 6, wherein said horizontal rails of said supporting base devices are welded on an upper part of said supporting base devices to allow for movement of movable horizontal welding cabinets upon the horizontal rails. 8. The process for building a tank according to claim 6, wherein said ring strip guiding devices of said supporting base devices comprising: a) a reinforced sheet structure of the geometry to fit said base of said supporting base devices so as to use it as a runner having a horizontal flat upper side;b) at least two horizontal rollers arranged on the horizontal flat upper side of said reinforced sheet structure, wherein the at least two horizontal rollers allow for sliding of ring strips;c) at least three vertical rollers, removable and interchangeable, arranged on the horizontal flat upper side of said reinforced sheet structure, wherein the at least three vertical rollers allow for sliding and shaping of ring strips; andd) at least one removable and interchangeable pulley wheel, arranged on the horizontal flat upper side of said reinforced sheet structure, wherein the at least one removable and interchangeable pulley wheel allows for guiding wires to pull ring strips. 9. The process for building a tank according to claim 6, wherein the horizontal welding of the raised and upper rings is performed by external horizontal movable welding cabinets and internal horizontal welding movable cabinets, each external horizontal movable welding cabinet comprises: a) a closed and air-conditioned cabinet having enough room to accommodate at least one operator and one welding equipment, at least one window to allow the welding equipment to approach the rings to be welded, and of a geometry allowing movement in a circular manner along the periphery of the tank between the internal circle and in the external circle;b) a ladder and handrails to allow operators to work safely on a roof of the external horizontal movable welding cabinet;c) at least three wheels for the movement along said horizontal rails;d) at least one engine with at least one driving wheel and an engine control system for movement of the external movable welding cabinet;e) accessory systems selected from the group comprising control of internal air conditioning, lighting control, welding quality control, remote control systems, and monitoring systems; andf) optional coatings for the walls and the roof of the external horizontal movable welding cabinet, selected from thermal and acoustic insulation. 10. The process for building a tank according to claim 9, wherein said internal horizontal movable welding cabinets move along said horizontal rails, each internal horizontal movable welding cabinet comprises: a) a closed and air-conditioned cabinet having enough room to accommodate at least one operator and one welding equipment, at least one window to allow the welding equipment to approach the rings to be welded, and of a geometry allowing movement in a circular manner along the internal circle;b) at least one wheel for the movement along said horizontal rails and at least one wheel for movement on the tank floor;c) at least one engine with at least one driving wheel and an engine control system for the movement of the internal horizontal welding cabinet;d) accessory systems selected from the group comprising internal air conditioning control, lighting control, welding quality control, remote control systems, and monitoring systems; ande) optional coatings for the walls and the roof of the internal horizontal movable welding cabinet, selected from thermal and acoustic insulation. 11. The process for building a tank according to claim 2, wherein prior to forming the ring strip a central mast is erected, wherein the central mast is used as a guide during the lifting and as a central column once construction of the tank is complete. 12. The process for building a tank according to claim 1, wherein the vertical welding of the metal sheets is performed outside the periphery of the tank, while the vertical welding of the seam between the ends of the ring strip are performed on the inner circle.
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이 특허에 인용된 특허 (18)
Morrison Alex J. (R.R. -1 Gibbons ; Alberta CAX T0A 1N0), Apparatus for constructing cylindrical storage tanks.
Arbella Rodolfo C. P. (Gothenburg SEX), Method of erecting large cylindrical storage tanks with a plurality of vertical plate bodies arranged inside one another.
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