Abstract:
A device for helical arrangement of the bodies of high-pressure vessels comprises a frame (4) mounted movably along the axis of the body (1) of a high-pressure vessel. The lower part of the frame (4) carries a pressing mechanism (50 mounted movably along the radius of the body (1) of the high-pressure vessel in the vertical direction. A mechanism (6) for tightening the arranged steel strip (13) is mounted before the pressing mechanism (5) following the feeding direction of the arranged steel strip from a roll (9) of the steel strip (13) to the body (1) of the high-pressure vessel. The pressing mechanism (5) is provided with a beam (23) fixed on the frame (4) and provided in its turn with forks and rollers (20) oriented in the direction to the body. All rollers (20) are mounted in their forks (21) at a distance from each other which is equal to 10 to 50 thicknesses of the arranged steel strip (13) and are placed on the generatrix of the body (1) of the vessel along the whole width of the arranged steel strip (13). The mechanism (6) for tightening the arranged steel strip consists of a group of rollers (16). The last two rollers (18, 19) following the feeding direction of the steel strip are provided correspondingly with convex and concave surfaces facing the surface of the steel strip (13). Radius of curvature of those surfaces is determined by the thickness and mechanical properties of the steel strip (13) and by the value of plastic deformation needed for compensation of the bend of the edges of the steel strip (13) upon its winding on the body (1) of the vessel after the pressing mechanism (5).
Abstract:
PCT No. PCT/SU80/00212 Sec. 371 Date Aug. 19, 1982 Sec. 102(e) Date Aug. 19, 1982 PCT Filed Dec. 24, 1980 PCT Pub. No. WO82/02156 PCT Pub. Date Jul. 8, 1982.A device for helical coiling of pressure vessel shells comprises a frame (4) traversable along the axis of a pressure vessel shell (1). The bottom portion of the frame (4) mounts a pressing mechanism 5 vertically traversable along the radius of the pressure vessel shell. A mechanism (6) for tensioning the steel strip being coiled is located before the pressing mechanism (5) as along the direction of run of the steel strip (13) from a coil (9) towards the pressure vessel shell (1). The pressing mechanism (5) has a beam (23) secured on the frame (4) and provided with forks (21) and rollers (20), both facing the pressure vessel shell. Each of the rollers (20) is mounted in its own fork (21) and spaced apart from another roller a distance 10 to 50 times the thickness of the steel strip (13) being coiled, and is situated on the generatrix of the pressure vessel shell (1) across the entire width of the steel strip (13) being coiled. The steel strip tensioning mechanism (6) is made as a group of rolls (16) of which the extreme two rolls (18, 19), as in the direction of run of the steel strip, have a convex and a concave camber, respectively, facing the surface of the steel strip (13). The radius of curvature of said cambered roll surfaces is determined by the thickness and mechanical characteristics of the steel strip (13) being coiled and by the amount of plastic deformation required to compensate for the marginal effect tending the edges of the steel strip (13) to flange outwards when the strip is being coiled onto the pressure vessel shell (1) past the pressing mechanism (5).
Abstract:
PCT No. PCT/SU80/00212 Sec. 371 Date Aug. 19, 1982 Sec. 102(e) Date Aug. 19, 1982 PCT Filed Dec. 24, 1980 PCT Pub. No. WO82/02156 PCT Pub. Date Jul. 8, 1982.A device for helical coiling of pressure vessel shells comprises a frame (4) traversable along the axis of a pressure vessel shell (1). The bottom portion of the frame (4) mounts a pressing mechanism 5 vertically traversable along the radius of the pressure vessel shell. A mechanism (6) for tensioning the steel strip being coiled is located before the pressing mechanism (5) as along the direction of run of the steel strip (13) from a coil (9) towards the pressure vessel shell (1). The pressing mechanism (5) has a beam (23) secured on the frame (4) and provided with forks (21) and rollers (20), both facing the pressure vessel shell. Each of the rollers (20) is mounted in its own fork (21) and spaced apart from another roller a distance 10 to 50 times the thickness of the steel strip (13) being coiled, and is situated on the generatrix of the pressure vessel shell (1) across the entire width of the steel strip (13) being coiled. The steel strip tensioning mechanism (6) is made as a group of rolls (16) of which the extreme two rolls (18, 19), as in the direction of run of the steel strip, have a convex and a concave camber, respectively, facing the surface of the steel strip (13). The radius of curvature of said cambered roll surfaces is determined by the thickness and mechanical characteristics of the steel strip (13) being coiled and by the amount of plastic deformation required to compensate for the marginal effect tending the edges of the steel strip (13) to flange outwards when the strip is being coiled onto the pressure vessel shell (1) past the pressing mechanism (5).