车库式干发酵装置密封性能试验研究  

Experiment and Optimization of Leakage Rate for Inflatable Seals of Garage-type Dry Fermentation Tank

作　　者：李瑞容[1] 孔伟[1] 曲浩丽[1] 王鹏军[1] 曹杰[1] 赵维松 韩柏和[1] 陈明江[1] 朱德文[1] 陈永生[1] 

机构地区：[1]农业部南京农业机械化研究所,南京210014

出　　处：《中国沼气》2017年第6期52-59,共8页China Biogas

基　　金：农业部公益性行业科研专项项目(201403019);江苏省自然科学基金资助项目(BK20151073)

摘　　要：为了提高车库式干发酵库的密封效果,降低"M"形充气密封系统的泄漏率,文章在自制的车库式干发酵装置上采用绝对压力衰减法进行了"M"形充气密封系统泄漏率试验。采用响应面Box-Behnken模型对密封系统的工作参数进行了试验研究,以充气压力、密封介质压力、密封间距为影响因素,以泄漏率为考察目标,建立了多元数学回归模型。试验结果表明:泄漏率的影响显著顺序依次为密封间距、充气压力、密封介质压力,其中密封间距和充气压力为极显著影响因素;最优工作参数组合为充气压力0.22 MPa,密封介质压力1000 Pa,密封间距5.50 mm,此时泄漏率为20.65 PaL·s^(-1),验证试验值与模型预测值的相对误差约为4.45%。试验结果为寻求低泄漏率、高稳定性的充气密封系统的工作参数提供参考。With the development of dry fermentation project towards large-scale and mechanization,the sealing system become more and more complicated and exacting. In order to improve the sealing effect of fermentation system,a garage-type dry fermentation system was designed with an M-shaped inflatable sealing system. The method of absolute pressure attenuation adopted to test the leakage rate of the M-shaped inflatable sealing system. And the working parameters of the sealing system were studied by the Box-behnken model of response surface method. The loading pressure,sealing medium pressure and sealing gap were taken as the influencing factors,the leakage rate of the M-shaped inflatable seals were used as responsive variables,and a multivariate mathematical regression model was established. The result showed that the significant of influence factors on leakage rate was in the order of sealing gap,loading pressure,sealing medium pressure,among which the sealing gap and loading pressure were significant influence factors. The optimal working parameter combination was 0. 22 MPa for the loading pressure,1000 Pa for the sealing medium pressure,and 5. 50 mm for the sealing gap,under which condition,the leakage rate was 20. 65 PaL·s^(-1). The relative error between the test value and the model prediction was about 4. 45%.

关 键 词：车库式干发酵 充气密封 泄漏率 响应面分析 优化 

分 类 号：S216.4[农业科学—农业机械化工程] S233.9[农业科学—农业工程]