Carbon/carbon spliced thermal insulation cylinder for monocrystalline silicon straight pulling furnace

The utility model discloses a carbon/carbon spliced thermal insulation cylinder for a monocrystalline silicon straight pulling furnace, which belongs to the technical field of monocrystalline silicon pulling equipment and comprises an upper hoop, a lower hoop and a plurality of arc petals made of carbon/carbon composite materials. The arc petals are sequentially spliced end to end to form a cylinder with upper and lower openings; and the upper hoop and the lower hoop are respectively hooped at the upper part and the lower part of the cylinder. According to the carbon/carbon spliced heat preservation cylinder for the monocrystalline silicon straight pulling furnace, the size of a blank is greatly reduced through a sectioning structure, so that degraded products can be fully utilized for processing, material waste is reduced, and the production cost is saved. 本实用新型公开了一种单晶硅直拉炉用炭/炭拼接保温筒，属于单晶硅拉制设备技术领域，其组成包括上环箍、下环箍和炭/炭复合材料制的多瓣弧瓣；多瓣弧瓣依次首尾拼接成上下敞口的圆筒；上环箍与下环箍分别箍设于圆筒的上部与下部。该单晶硅直拉炉用炭/炭拼接保温筒通过分瓣结构使得坯料的尺寸大幅减小，进而可充分利用降级品加工，