冷湖炼油厂管式常压装置的加热爐,需要一座直径1米、高32米的鋼質烟囱。根据柴达木的气象条件,通过計算,需要由10毫米、8毫米、6毫米三种鋼板分三段制成。但我們仅有4.5毫米、3毫米二种鋼板,因此我們因材设計,用此二种鋼板建成了一座合乎要求的烟囱。茲将該烟囱的结构、施工及使用情况簡介如下。烟囱的結构见图1。囱壁23.4米以下采用4.5毫米鋼板,23.4米以上采用3毫米鋼板。10米以上捲制成直筒形,10米以下成錐形。烟囟顶部內径为1000毫米,底部內径为2000毫米。为了增加烟囱的强度,我們采用了以角鋼(60×40×6)作横向加强圈的办法,在直筒部分每隔600毫米加一道,用对接两面銲;在錐形部分每隔500毫米加一道,采用50/150間断焊(如图2所示),並且每圈之間均采 Cold Lake refinery tube atmospheric pressure heating furnace, you need a diameter of 1 m, 32 m high steel chimney. According to the meteorological conditions of Qaidam, through calculation, it needs to be made of three sections of 10 mm, 8 mm and 6 mm. But we have only 4.5mm, 3mm two kinds of steel, so we designed for the material, with these two plates to build a satisfactory chimney. The structure, construction and use of the chimney will be as follows. Chimney structure shown in Figure 1. Chimney 23.4 meters below the use of 4.5 mm steel, 23.4 meters above the use of 3 mm steel. Roll over 10 meters into a straight tube, 10 meters into a cone. The top of the chimney has an inner diameter of 1000 mm and a bottom inner diameter of 2000 mm. In order to increase the strength of the chimney, we use the angle steel (60 × 40 × 6) as a transverse reinforcement ring in the straight part of every 600 millimeters increase, with butt welding on both sides; in the tapered part of every 500 millimeters add a , Using 50/150 discontinuous welding (shown in Figure 2), and mining between each turn