Wall structure of large-sized refrigerated storage and construction method thereof

Abstract

The present invention discloses a wall structure of a large-sized refrigerated storage and a construction method thereof. The construction method for a wall of a refrigerated storage comprises the following steps: A. building a wall framework; B. mounting a color steel plate on the outer surface of the framework to form an exterior wall board of the wall of the refrigerated storage; C. spraying polyurethane spraying material on the exterior wall board layer by layer for multiple times, and reserving a pouring space at a distance of 40 mm to 80 mm from the installation position of an interior wall board; and D. taking the color steel plate of the interior wall as a mold plate and filling the pouring space of the color steel plate of the interior wall with polyurethane pouring material thus to form the interior wall board of the wall of the refrigerated storage.

1 . A construction method for a wall of a large-sized refrigerated storage, comprising the following steps:
 A. building a wall framework, a framework of each wall of the refrigerated storage being connected to each other so as to form an integral frame;   B. mounting a color steel plate, a stainless steel plate, an aluminum plate or a sandwich panel on the outer surface of the framework, and assembling the color steel plate, the stainless steel plate, the aluminum plate or the sandwich panel to form an exterior wall board of the wall of the refrigerated storage;   C. spraying polyurethane spraying material on the exterior wall board layer by layer for multiple times, and reserving a pouring space at a distance of 40 mm to 80 mm from the installation position of the interior wall board; and   D. mounting color steel plates, stainless steel plates or a sandwich panels of the interior wall in sequence; taking an interior color steel plate, a stainless steel plate or a sandwich panel as a mold plate and filling the pouring space at the interior color steel plate, the stainless steel plate or sandwich panel with polyurethane pouring material; and after the polyurethane pouring material is solidified and the pouring space is full of the polyurethane pouring material, mounting another color steel plate, stainless steel plate or sandwich panel and filling with the polyurethane pouring material again thus to form an interior wall board of the wall of the refrigerated storage.   
     
     
         2 . The construction method for a wall of a large-sized refrigerated storage according to  claim 1 , wherein: in the step A, the framework is built by C-shaped steels and angle steels, and a row of steel columns are erected at the exterior wall board or a high-temperature side; the distance between adjacent C-shaped steels is 2000 mm to 4000 mm; a plurality of angle steels are fixed in a lateral direction on the erected C-shaped steels; and one end of the cold-blocking bridge component is welded on the angle steel at the exterior wall board, and the other end of the cold-blocking bridge component is welded on the angle steel at the interior wall board. 
     
     
         3 . The construction method for a wall of a large-sized refrigerated storage according to  claim 2 , wherein, in the cold-blocking bridge component, the distance between the heat insulating rods on a same level is 500 mm to 1000 mm. 
     
     
         4 . The construction method for the large refrigerated storage wall according to  claim 1 , wherein, in the step B and step D, the color steel plate, the stainless steel plate or the aluminum plate of the exterior wall and the color steel plate, the stainless steel plate or the aluminum plate of the interior wall are all fixed on the angle steels of the framework by self-tapping screws or sealed blind rivets. 
     
     
         5 . The construction method for a wall of a large-sized refrigerated storage according to  claim 1 , wherein the method for spraying layer by layer for multiple times in the step C comprises the following steps:
 at the first time, spraying polyurethane material with a thickness of 10 mm to 15 mm on the color steel plate, the stainless steel plate or the sandwich panel of the interior wall, as an underlayer;   at the second time, spraying the polyurethane material with a thickness of 15 mm to 25 mm; and   at the third time, spraying the polyurethane material with a thickness of 25 mm to 35 mm, and taking the thickness as the model for each spraying until stopping at a distance of 40 mm to 80 mm from the position of the interior wall board, each interval between two sprayings being not less than 5 minutes.