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一、前言 在煤矿生产中,主通风机的耗电量所占比重很大。据永定矿务局资料,其耗电量约占全局总耗电量的30％。显然,降低主通风机的能耗,对提高企业经济效益有着重要的意义。为此,永定矿务局从实际出发,通过试验、推广液力耦合器应用于主通风机,有效地实现了节能降耗。本文将结合实例,对液力耦合器的节能效果进行分析和论证。 二、使用离心式通风机在能耗方面存在的问题 1、在设计时,风机及所配套的电机的选型,必须满足矿井开采前后期不同的通风要求,加上主通风机的转动惯量较大,为保持风机有足够的启动力矩,还必须留有一定量的备用能力。所以,风机所匹配的电机功率选择是依据整个电机使用期间的最大载荷,再加上10—15％的备用能力来确定的。这样,所选择的电机功率和电机初期使用的功率相比,往往大上好几倍。而初期工况通常要维持若干年。因此,若无调节或调节不当,就会造成严重的能源浪费。 2、南方矿井,地质构造复杂,矿井投产后,常达不到设计能力。但依据设计能力而选择的通风设备,一经安装,便难以更改,导致因设备能力过剩而造成能源浪费。 3、在南方矿井的开采过程中,工作面的布置常因地质条件的变化而变化,造成井下风阻变化很大。而转速在设计安装时已为恒值的通风机所产生的能力难以适应这?
I. Introduction In coal mine production, the main fan consumes a large amount of power. According to Yongding Mining Bureau data, its power consumption accounts for about 30% of the total global power consumption. Obviously, to reduce the main fan energy consumption, to improve the economic efficiency of enterprises of great significance. To this end, Yongding Mining Bureau from the reality, through experiments and promotion of hydraulic coupler applied to the main fan, effectively saving energy. This article will be combined with examples to analyze and demonstrate the energy-saving effect of the fluid coupling. Second, the use of centrifugal fan in the energy problems 1, in the design, the fan and the matching motor selection, mining must meet the different requirements of the ventilation before and after the mining, coupled with the main fan than the moment of inertia Large, in order to maintain sufficient starting torque fan, but also must retain a certain amount of spare capacity. Therefore, the fan motor power matching options are based on the maximum load during the entire motor, coupled with 10-15% of the reserve capacity to determine. In this way, the power of the motor of choice is often several times larger than the power used by the motor initially. The initial conditions usually maintain for several years. Therefore, if there is no regulation or improper regulation, it will cause serious energy waste. 2, South Mine, complex geological structure, the mine put into operation, often fail to design ability. However, ventilation equipment, which is selected according to design capabilities, can not be easily changed once installed. As a result, energy is wasted due to excess capacity of equipment. 3, in the mining process in the South, the face of the layout often due to changes in geological conditions and changes, resulting in great changes in wind resistance downhole. The speed in the design and installation of the ventilator has been the constant value of the ability to adapt to this difficult?