矿用大型圆弧板叶型对旋式局部通风机的研制  

Development of large-scale contra-rotating axial fan for mine auxiliary ventilator with circular plate blade profile

作　　者：贺秋冬[1] 吴昊[1] 陈宗涛[1] 

机构地区：[1]湖北工程学院计算机与信息科学学院,湖北孝感432000

出　　处：《煤炭学报》2012年第7期1227-1232,共6页Journal of China Coal Society

摘　　要：为满足煤矿对大风量、长距离局部通风的需求,研制了FBD-№7.5/2×55(叶轮直径0.75 m,额定转速2 970 r/min,2级,单级功率55 kW)矿用大型防爆对旋轴流局部通风机,该机的叶片采用圆弧板叶型,用普通热轧钢板模压成形,加工简易,材料成本低,无静电,不老化。研究采用理论分析和试验相结合的方法。通过有限元分析,采用局部加大叶片根部厚度的办法,解决了高速、大机号通风机圆弧板叶片易断裂的问题。经测试,该通风机的风量为15.83～10.66 m3/s,全压为1 331～7 454 Pa,全压效率达到82.64%,比A声级噪声13.92LSA(dB),其气动性能优于行业标准。现场应用表明:该通风机运行安全可靠,功能满足用户需求。Large-scale contra-rotating axial fan for mine auxiliary ventilation FBD-No7.5/2 × 55 （impeller diameter： 0. 75 m, rated speed ：2 970 r/min,2 stages, single stage power：55 kW） were developed to meet the mine demand of large air flow and long distance. The blade die-formed with common hot-rolled sheet steel is in circular plate profile, which has simple process with low cost, no static and non-aging. This study combines theory analyses with experi- ments, solving the problem of easy blade fracture of high-speed and large-scale fans by enlarging auxiliary thickness of the blade root through finite element method analyses. After testing,the air flow of this fan is up to 15.83-10. 66 m3/ s, total pressure, 1 331-7 454 Pa, efficiency of total pressure ,82.64% , A-weight specific sound level, 13.92LsA（dB） , and its aero-dynamic performance effect is better than that of industry standards. Filed testing shows that the fan runs safe and reliable, and that the function can meet needs of users.

关 键 词：对旋轴流式 局部通风机 圆弧板叶型 气动性能 有限元 

分 类 号：TD441.2[矿业工程—矿山机电]