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矿井通风风压分布情况的测定,一般采用皮托管—压差计法。用该法测定一个完整的通风系统,不仅工作量大,而且很难在通风条件保持不变的情况下测完。因此,大部分矿山很少进行风压分布测定,影响了通风系统的管理。为解决这个问题,冶金部安全技术研究所和西北工业大学共同研制了XW-Ⅱ型微气压差计。此仪器具有精度高、结构紧凑、新颖实用和操作简便等特点,完全可以在矿井中应用。一、用气压计法测定矿井通风压差的原理
Mine ventilation air pressure distribution, the general use of Pitot tube - differential pressure method. Using this method to determine a complete ventilation system, it is not only heavy workload, but also difficult to test under the condition of ventilation unchanged. Therefore, most mines rarely measure the wind pressure distribution and affect the ventilation system management. To solve this problem, the Ministry of Metallurgical Institute of Safety Technology and Northwestern Polytechnical University jointly developed XW-Ⅱ micro-pressure gauge. This instrument has the characteristics of high precision, compact structure, novel and practical and easy to operate, can be fully used in mines. First, with barometer method to determine the principle of mine ventilation pressure difference