摘要
以大直径筒仓为试验对象,用聚氯乙烯薄膜为主要材料制作“呼吸气囊”。该气囊通过通风口与外界相连,依据仓内压强变化自动调节体积,平衡仓内外的压差。试验表明:“呼吸气囊”可将仓内压力稳定维持在-5 Pa~2 Pa之间,有效延长仓内氮气有效杀虫时间;实仓气密性达60 min以上的仓房,充气一次整仓有效杀虫浓度维持60 d以上,实仓气密性在25 min以上的仓房,有效杀虫浓度维持20 d以上;相较于未放置“呼吸气囊”的仓房,在控温期间开展气调作业,单仓全年至少能减少4次补气次数,制氮机半年能耗降低25%。本研究为大直径筒仓在空调控温期间进行气调提供技术支持。
A“breathing airbag”was made using polyvinyl chloride film as the main material,with a large diame-ter silo as the experimental object.The airbag is connected to the outside through a ventilation opening and auto-matically adjusts its volume according to changes in pressure inside the compartment,balancing the pressure differ-ence inside and outside the compartment.The experiment shows that the“breathing airbag”can maintain the stable pressure in the warehouse between-5 and 2 Pa,effectively prolonging the effective insecticidal time of nitrogen gas in the warehouse;Warehouses with a solid airtightness of more than 60 minutes,the effective insecticidal con-centration of the entire warehouse should be maintained for at least 60 days after one inflation.For warehouses with a solid airtightness of more than 25 minutes,the effective insecticidal concentration should be maintained for at least 20 days;Compared to warehouses without“breathing airbags”,conducting nitrogen controlled atmosphere op-erations during temperature control can reduce the number of refills for a single warehouse by at least 4 times a year,and reduce the energy consumption of nitrogen generators by 25%in six months.This project provides tech-nical support nitrogen controlled atmosphere during the temperature control period of large-diameter silos.
作者
夏永刚
邓广牒
李汉宏
刘义漳
Xia Yonggang;Deng Guangdie;Li Hanhong;Liu Yizhang(Shunde Direct Warehouse,Guangdong Grain Reserve Management Group Co.,Ltd.,528300)
出处
《粮食储藏》
2025年第4期47-53,共7页
Grain Storage
关键词
大直径筒仓
呼吸气囊
空调控温
氮气气调
平衡压差
能耗
large-diameter silo
breathing airbag
air conditioning
temperature control
nitrogen controlled atmos-phere
pressure balance
energy consumption
