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本文依托某大型复杂地下储气洞库群修建中采用竖井+风仓+风管的通风模式,为满足工程施工通风的需要,研究不同风仓尺寸和风机布置形式对轴流风机效率的影响,建立了17组风仓GAMBIT有限元数值模型,通过FLUENT软件进行模拟计算,得到了轴流风机效率最大时的风仓尺寸和风机布设形式。计算结果表明,在风仓高度固定为9 m的条件下,风仓长度取30 m、宽度取10 m时,风仓内旋流数目最少,风仓两侧的风机效率最高,因此,可确定风仓的最佳尺寸;另外,在此基础上风仓中间不设置隔板,风仓每侧风机分列布置且风机间横向和竖向间距都为2 m且风机间不设置隔板,可得到最佳轴流风机效率。
In order to meet the need of ventilation in engineering construction, the paper studies the influence of different silo dimensions and fan layout on the efficiency of axial fan, which is based on the ventilation mode of shaft + wind bin + air duct in the construction of a large complex underground gas storage reservoir group. 17 groups of GAMBIT finite element numerical model were established and simulated by FLUENT software. The size of wind chamber and layout of fan were obtained when the efficiency of axial flow fan was maximum. The calculation results show that when the length of the silo is 30 m and the width of the silo is 10 m, the number of swirls in the wind silo is the least and the efficiency of the fans on both sides of the silo is the highest when the height of the silo is fixed at 9 m. Therefore, In addition, on the basis of this, there is no baffle in the middle of the silo, and the fan on each side of the silo is arranged in a row and the horizontal and vertical spacing between the fans are both 2 m and no partition is provided between the fans, which can be obtained The best axial fan efficiency.