泉州变压器的性能特点

泉州变压器的性能特点
        传统的带储油柜泉州变压器的冷却介质和周围空气相接触，使氧气和潮气容易浸入油箱内，从而使泉州变压器油和绝缘材料容易老化，并由于吸收水分而使绝缘强度降低，针对这两个缺点，目前国内外都在生产能使泉州变压器的冷却介质与空气相隔绝的泉州变压器：泉州变压器。
        20世纪80年代以来，国外研制成功了泉州变压器。由于这种泉州变压器不让氧气和潮气进入泉州变压器箱体，延长了泉州变压器的使用寿命，投运前不需要做吊心检查，运行后又免除维护和保养，因此.深受欢迎。
        泉州变压器箱盖和油箱之间不能采用传统的螺栓连接，泉州变压器端盖、抽位指示器和箱体之间焊为一休，从而减少了渗偏，提高了油箱的强度，保证整个交压器的密封性，设备少维护.可以做到20年不大修，这就要求从产品的结构设计、原材料的选用等诸多方面考虑产品的可靠性。在技术上应采取行之有效的得力措施。
 
        密封式油箱结构，泉州变压器的要型式有三种：
        ******种为空气密封型，即在油箱内距箱盖处留有一定高度的空气，使油热膨胀压缩空气，减对箱壁的压力。但这种型式的泉州变压器，油的保养期较短，保养费用为呼吸型(即一般带储油柜的泉州变压器)的50%。
        第二种为充氮密封型，氮气垫的休积约占油体积的15 % (20℃时)，氮气纯度为98%。泉州变压器的损耗使泉州变压器油膨胀，减少了气体占有空间，将热传递到气体中。泉州变压器油的温度升高和气体的温度升高具有增压的作用，而油体积的变化和泉州变压器油对气体的吸收则具有减压作用。
第三种是全充油密封型。这类泉州变压器是因温度和负载的变化引起泉州变压器油体积的变化.完全由泉州变压器油箱的弹性予以调节。因此，在大气压力条件下密封起来的油箱，其压力的变化要由油体积和油箱弹性程度决定，而波纹油箱恰好满足了这一要求。
 
Characteristics of sealed transformers
 
    Traditional cabinet with transformer oil and the cooling medium in contact with ambient air, oxygen and moisture to easily immersed in the tank, so that the transformer oil and insulating materials easy to aging, and due to absorption of water leaving the lower dielectric strength for these two shortcomings , both at home and abroad to make in the production of transformer isolation with air coolant transformer: sealed transformer.
    Since the 1980s, foreign developed a sealed transformer. Because of this transformer to prevent oxygen and moisture into the transformer box, extend the life of the transformer, do not put into operation before the hanging heart check, run and then remove the maintenance and repair, so. Popular.
Sealed transformer tank cover and can be made between the traditional bolt connections, the transformer cover, pumping and tank level indicator for a break between the solder, thereby reducing the partial penetration, improve the strength of the tank to ensure the delivery pressure device sealing, equipment, less maintenance can be done 20 years without major repairs, which requires structural design from the product, raw materials selection, and many other aspects to consider product reliability. Technically proven effective measures should be taken.
 
    Sealed fuel tank structure, sealed transformer, there are three main types:
    The first is air sealed type, that is left inside the tank at a certain height from the cover of the air, the oil thermal expansion of compressed air, reducing the oil pressure on the walls of the box. However, this type of transformer oil maintenance period is shorter, maintenance costs for the breathing-type (the general transformers with oil conservator) of 50%.
    The second type of nitrogen sealed, nitrogen pad off the plot oil volume of about 15% (20 ℃), the nitrogen purity of 98%. The loss of the transformer oil transformer expansion, reducing the gas occupies space, the heat transfer to the gas. Transformer oil temperature and gas temperature has a booster effect, and changes in the volume of oil and transformer oil will have absorbed the gas decompression.
    The third is the whole oil-filled sealed type. Such transformers are due to changes in temperature and load changes in the volume of transformer oil. Entirely by the flexibility of the transformer tank to be adjusted. Therefore, sealed under atmospheric pressure tank, the pressure changes in the main tank by the oil volume and flexibility of decision, and ripple tank just to meet this requirement.