介绍了一种矿井扇风机的计算机优选方法及优选程序。
This paper introduced an optimizing method and optimization program used for selecting mine fan by computer.
对矿井开采中采用的局部扇风机进行泄压通风的技术作了介绍。
This paper introduces the decompression ventilation technique with local fans in the excavation of the mine.
煤矿主扇风机的主要功能是保证井下空气畅通新鲜，降低瓦斯浓度。
The function of the main fan in coal mine is to keep fresh air and reduce the concentration of gas.
有些矿井利用大气压力差引起空气自然流动，有些矿井则必须用扇风机把空气压人井内。
In some cases the difference in atmospheric pressure causes the air to circulate naturally; in others a fan must be used to pump air into the mine.
首先介绍了主扇风机存在的主要问题，对风机所处的腐蚀环境进行分析，并对其实施了防腐设计。
The main problems of the main fan are introduced firstly. Secondly, analyzes the corrosion circumstance around the main fan, and makes antiseptic treatment.
分析了井下局扇风机烧毁的原因，提出了仅改动一根线，即可解决井下局扇风机因断相而烧损问题的方法。
And the methods of solving the burning problems caused by breaking phase are provided, which is only changing one circuit.
文章主要综述了国内外对局部扇风机气动噪声的研究与控制方法，对孤立叶轮的声学模型及其噪声控制方法。
The paper summarizes mainly the research and control of pneumatic noise of local fan, the sonic model of isolated blade wheel and the control method of noise in home and foreign countries.
系统采用无环流交-交变频控制方案、应用无速度传感器的矢量控制技术对拖动煤矿主扇风机的感应电动机进行控制。
The system is designed as circulation absent and A-A VF controlled one, in which a responsive motor driving the main ventilation fan is controlled in a vector control technology without speed sensor.
针对矿井老型号轴流式扇风机的结构缺陷，结合现场实际进行了技术改造，提高了主扇运动效率，收到了显著的经济效益。
This is directed against structure defect of mine old type tube - axial fan, make technique transform to combine practice, raises main fan running efficiency, receives notable economic benefits.
简要论述局部扇风机（轴流式通风机）产生不稳定工况的原因和变化规律，提出以分流器消除风机特性曲线驼峰区段、使其工作运行稳定的技术措施。
The technical measures are given out by which the hump zone of characteristic curve of the local fan can be eliminated using a current divider and the operaiting stability of the fan can be improved.
建井期间未构成全风压通风系统时，通常采用局扇供风，往往造成瓦斯积聚，为此选用轴流式大功率局部扇风机供风，是解决长距离通风的最佳选择。
When auxiliary fan without enough pressure used in shaft construction, it was possible to lead gas concentration. The powerful axial flow auxiliary fan may solve the problem.
建井期间未构成全风压通风系统时，通常采用局扇供风，往往造成瓦斯积聚，为此选用轴流式大功率局部扇风机供风，是解决长距离通风的最佳选择。
When auxiliary fan without enough pressure used in shaft construction, it was possible to lead gas concentration. The powerful axial flow auxiliary fan may solve the problem.
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