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变频器通风管道的生活应用

发布人:http://www。sftfgd。com   发布时间:2018-02-24 17:10:06

高压变频器的发热部件主要有两部分:一是整流变压器;二是功率元件,变频器的冷却方式-般采用空气冷却或者水冷却。在动力功率较小时,采用自然空气冷却或空调冷却满足要求。在功率较大时,通过在散热器中通水,利用循环水流带走热量。单纯从散热的角度,水冷是非常理想,即有冷却效果又节能环保。但是,水循环系统工艺对密封要求很高,安装复杂,维护量大,水循环系统一旦漏水,会带来严重安全隐患。所以,能够用空气冷却解决问题的场合,就不采用水冷。

The heating parts of high voltage frequency converter mainly consist of two parts: one is rectifier transformer, the other is the cooling way of power element and frequency converter -- air cooling or water cooling is adopted as the two. When power power is low, natural air cooling or air conditioning cooling can be used to meet the requirements. When the power is large, the heat is taken away by circulating water through the water in the radiator. Only from the angle of heat dissipation, water cooling is very ideal, that is, the cooling effect is energy saving and environmental protection. However, the water circulation system has a high requirement for sealing, complex installation and large maintenance. Once the water circulation system is leaking, it will bring serious security risks. Therefore, the air cooling can be used to solve the problem without water cooling.

变频器冷却的现状及问题为了解决变频器冷却及防尘问题,南片水厂取水泵站配置4台五匹吸顶式空调对变频器发热进行室内循环冷却,在2017年6月开始的高峰供水期间,南片水厂取水泵站的两台高压变频器24h常态在45Hz运行。但是当气象温度在35℃以上时,安装在室内的4套五匹空调全部开启,却还是无法将室温降低至变频器允许的环境温度40℃以下。变频器发热量近似值=变频器容量X55W即1000kVAX0.9X55W=49.5kW;-匹空调制冷量近似值为2000kcal×1.162=2324W(其中,1.162为热能能量转换系数);五匹空调制冷量2324W×5匹=11.62kW,也就是说4台五匹空调的制冷功率相当与-台变频器的发热量。

The present situation and problems of inverter cooling cooling and converter dust in order to solve the problem, the south water pumping station equipped with 4 five pieces of ceiling type air conditioning indoor cooling of inverter in heating, the peak water supply during the beginning of June 2017, the south water pumping station two sets of 24h high voltage inverter in 45Hz normal operation。 But when the meteorological temperature is above 35 C, the 4 sets of five air conditioners installed in the room are all open, but it is still unable to reduce the room temperature to the environment temperature below 40 C below the frequency converter。 The inverter heat approximation converter capacity X55W = 1000kVAX0。9X55W=49。5kW; - horse air conditioners cooling capacity approximate value of 2000kcal * 1。162=2324W (among them, 1。162 for thermal energy conversion coefficient); five air-conditioning cooling capacity of 5 2324W * =11。62kW is horse, calorific value of refrigeration power of 4 sets of five air conditioning is equivalent to Taiwan converter。

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如果任由这种运行情况持续下去,将使变频器出现故障的概率剧增,届时不仅会产生高额的维修费用,还会导致取水泵站取水能力下降,进而影响南片水厂的高峰供水。南片水厂取水泵站从实际检测数据显示整流变压器发热大于功率单元元件的发热量。如能把这部分的热量引走,不仅可以降低室温,还能减轻空调的负荷,减少空调的开启台数,实现节能降耗。

If this operation is allowed to continue, the probability of the failure of the inverter will increase sharply。 At that time, it will not only generate high maintenance costs, but also cause the water intake capacity of the pumping station to decrease, and then affect the peak water supply of the south water plant。 From the actual testing data of the pump station of the south water plant, the heating amount of the rectifier transformer is greater than that of the power unit element。 If this part of the heat can be taken away, not only can reduce the room temperature, but also reduce the load of air conditioning, reduce the number of open air conditioning, to achieve energy saving and reducing consumption。

极速时时彩官网室内散热问题的解决方法利用高压变频器自带的轴流风机作为源动力,在整流变压器柜体的轴流风机外边加直径为0.85m的通风管道到室外,整根通风管道不另行设置排风机,以实现变频器热量外循环,降低室内温度,保护变频器电子元件的目的。

The axial flow fan to solve the heat dissipation problem using the method of indoor high-voltage inverter comes as a source of power, the rectifier transformer cabinet axial fan outside diameter 0。85m ventilation pipe to the outside, the whole ventilation pipe without exhaust machine, in order to realize the inverter heat cycle, reduce the indoor temperature, the protection of electronic transducer the purpose of components。

安装通风管道是解决变频器散热简单而有效的方式,投入少见效快,高压变频器发热量与外界自然空气循环后,室内即不会产生空气负压,又降低室内环境温度,由于空调少开、温度降低后变频器的效率提升等因素带来的节能效益,初步测算,一年可以节省电费约4万元。值得注意的是,直接与外界空气循环后,需要增加变频器的防尘设施空气通过散热通道时,空气中的尘埃容易附着或堆积在变频器内的电子元件上,从而影响散热,严重时会缩短变频器的寿命。

The installation of ventilation pipe is solved inverter simple and efficient way, less investment and quick, high voltage inverter heat and external natural air circulation, which does not produce indoor air negative pressure, and reduce the indoor temperature, less open, because the air conditioning temperature decreased after the inverter efficiency and other factors brought about energy efficiency, preliminary estimates, a year can save electricity about 40 thousand yuan. It is worth noting that, directly with the outside air circulation, the need to increase the frequency of air through the cooling channel of dustproof facilities, dust in the air easily attached or stacked electronic components in the frequency converter, thus affecting the heat, which will shorten the service life of the converter.


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