论文部分内容阅读
一、前言 生产矿井备用风机的鉴定,因条件所限,空气只能由地面短路进入扇风机,如图1所示。一是反风门进风,在风机房百叶窗上采用板阻法调节工况;二是检修门进风,也采用板阻法调节工况。显然,采用反风门进风是合理的,不需要进行任何辅助工程。但是,我国有不少煤矿的风机房布置是两台风机共用一个反风门。为了保证井下生产的正常进行,采用检修门进风是简单易行的方案。但是由于检修门的设计面积一般只有0.5平方米左右,这样小的断面因风阻较大,不能将扇风机的压力曲线完整地测出来,要完整地测出扇风机的压力曲线,必须
First, the foreword Identification of mine backup fan, due to conditions, the air can only enter the fan by the ground short circuit, as shown in Figure 1. First, the anti-wind door into the wind, louis vuitton, louis vuitton, louis vuitton, louis vuitton, louis vuitton, louis vuitton, louis vuitton outlet, louis vuitton outlet Obviously, the use of anti-wind into the wind is reasonable, do not need any ancillary works. However, there are quite a few coal mines in our country. The layout of the wind turbine is that two wind turbines share an anti-wind gate. In order to ensure the normal production downhole, the use of access door into the wind is a simple and easy solution. However, due to the design area of the access door is generally only about 0.5 square meters, such a small cross-section due to greater wind resistance, fan fan pressure curve can not be completely measured, to completely measure the fan fan pressure curve, you must