Powered door for nuclear power plant

摘要

A powered door for nuclear power plant consists of an embedded steel plate, a door frame welded on the embedded steel plate, a pair of hinge devices, a group of door panels, a group of opening and closing devices and a group of bolt devices; the door panels are fixedly arranged within the door frame through the hinge devices; the opening and closing devices are arranged at the upper ends of the door panels, and the bolt devices are arranged in the internal sides of the door panels. The powered door is fire-proof, explosion-proof and bulletproof, and is safe and long in service life, thus, the powered door can be used for nuclear power engineering which is constructed based on new standards.

主权项

1. A powered door for a nuclear power plant, the powered door comprising an embedded steel plate (1), a door frame (2) welded on the embedded steel plate (1), a pair of hinge devices (3), a group of door panels (4), a group of opening and closing devices (5) and a group of bolt devices (6); wherein the door panels (4) are installed in the door frame (2) through the hinge devices (3); the opening and closing devices (5) are arranged at upper ends of the door panels (4), the bolt devices (6) are arranged within the door panels (4); and fireproof sealing strips (7) are adhered to the peripheries of the door panels (4); wherein:
each of the hinge devices (3) comprises a first door frame hinge part (9), a second door frame hinge part (10) and a door leaf hinge part (11), wherein the first door frame hinge part, the second door frome hinge part, and the door leaf hinge part are connected through a one-way thrust ball bearing (8); and the first door frame hinge part (9), the second door frame hinge part (10) and the door leaf hinge part (11) are provided with explosion-proof bolts (12); the first door frame hinge part (9) is provided with two parallel rows of explosion-proof bolts (12), each row of explosion-proof bolts (12) having three evenly spaced explosion-proof bolts (12); the second door frame hinge part (10) is provided with three parallel rows of explosion-proof bolts (12), each row of explosion-proof bolts (12) having three evenly spaced explosion-proof bolts (12); the door leaf hinge part (11) is horizontally provided with three rows of explosion-proof bolts (12), each row of explosion-proof bolts (12) having three evenly spaced explosion-proof bolts (12); wherein the door panels are fireproof door panels with a thickness of 202-284 mm, each of the door panels (4) further comprising a basal plate (13) having two sides, each of the sides being provided with a fixed frame (14), a fire protection layer reinforcement frame (15), a fireproof plate (16) and a film faced plywood (17); wherein the basal plate (13) is a rectangular ASTM36 steel plate which is 4877-6096 mm in height, 4267-5791 mm in width and 148-180 mm in thickness; the fixed frame (14) is formed by welding steel with a thickness of 25-50 mm and a width of 22 mm at the peripheries of both sides of the basal plate (13); the fire protection layer reinforcement frame (15) is a rectangular grid frame which is formed by welding galvanized square tubes in a space formed within the fixed frame (14) and uniformly distributing the galvanized square tubes on the basal plate (13) to form a plurality of grids, such that the size of each grid is 400 mm*300 mm; the fireproof plate (16) is a perlite fire protection layer with a thickness of 25-50 mm which is adhered to the basal plate (13) within the grids formed by the fire protection layer reinforcement frame (15); and the film faced plywood (17) includes a metal sheet with a thickness of 2 mm, wherein the film faced plywood is pressed on the fixed frame (14), the fire protection layer reinforcement frame (15) and the fireproof plate (16).