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.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2012年第7期1227-1232,共6页
Journal of China Coal Society
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
contra-rotating axial
auxiliary ventilator
circular plate blade
aero-dynamic performance
finite element method
