The invention discloses a fastening structure for solving the short circuit resistance problem of amorphous alloy transformer, which includes three-phase coil and three-phase iron core arranged horizontally, with two layers of iron core; the outer part of phase A coil and the outer part of phase C coil are equipped with iron pressing plates, which are arranged between two layers of iron core; the inner diameter parts of phase A coil, phase B coil and phase C coil are equipped with epoxy plates, and the epoxy plate is equipped with epoxy plates. Between the two layers of iron core, the outer side of the iron core is provided with side clamps, the side clamps are provided with screw nuts, and the screw nuts are provided with pressure nails for resisting the iron pressing plate; the high-voltage coils and low-voltage coils of each phase are tightened by binding bands. The invention presses the three-phase coil into a whole through an iron pressure plate, enhances the outer diameter constraint of the coil's amplitude, tightens the inner diameter of the coil by an epoxy plate placed at the inner diameter part of the coil, enhances the inner diameter constraint of the coil's amplitude, tightens the inner diameter constraint of the coil's amplitude, and tightens each phase high-voltage coil and low-voltage coil with a binding belt to ensure the axial constraint of the coil, and enhances the
【技术实现步骤摘要】
解决非晶合金变压器抗短路问题的紧固结构
本专利技术涉及变压器领域,具体是一种解决非晶合金变压器抗短路问题的紧固结构。
技术介绍
SH15型非晶合金变压器与同容量S11型配变相比,空载损耗下降了60%~70%,节能效果十分显著,符合国家的节能降耗政策。非晶合金变压器线圈为矩形,铁芯不能受力,这些结构和材料特点使得非晶合金变压器线圈在结构上紧固困难,故短路承受能力很差,行业上非晶合金变压器短路承受能力试验通过率极低,例如对于SBH15-400/10变压器,据试验单位不完全统计,即使经过特殊设计和加工的产品,试验通过率仅约为25%。为了增强非晶产品的抗短路能力,现有技术方案有:方案1:1、线圈浸漆,提高线圈的机械强度;2、非晶铁芯用涂漆的硬铁芯,使得铁芯上部和侧面具有一定的钢性,对线圈在上部和侧面具有一定的约束力。方案2:1、三相线圈用打包带打在一起,A、C相外侧加垫10mm厚环氧板,用打包带与线圈打包在一起,这样增强线圈幅向和轴向的约束力。方案1缺点:1、线圈的机械强度依然不足,抗短路能力仍然较差,例如对于SBH15-400/10变压器,试验通过率低于25%;2、线圈 ...
【技术保护点】
1.解决非晶合金变压器抗短路问题的紧固结构,包括水平布置的三相线圈(6)以及三相铁芯(5),所述线圈(6)包括A相线圈(61)、B相线圈(62)、C相线圈(63),其中A相线圈(61)与B相线圈(62)相邻紧靠、B相线圈(62)与C相线圈(63)相邻紧靠;所述A相线圈(61)、B相线圈(62)、C相线圈(63)分别包括位于外侧的高压线圈(8)以及位于内侧的低压线圈(9),其特征在于:所述铁芯(5)设有两层;所述A相线圈(61)的外侧部分、C相线圈(63)的外侧部分均设有铁压板(4),所述铁压板(4)设置在两层铁芯(5)之间;所述A相线圈(61)、B相线圈(62)、C相线圈( ...
【技术特征摘要】
1.解决非晶合金变压器抗短路问题的紧固结构,包括水平布置的三相线圈(6)以及三相铁芯(5),所述线圈(6)包括A相线圈(61)、B相线圈(62)、C相线圈(63),其中A相线圈(61)与B相线圈(62)相邻紧靠、B相线圈(62)与C相线圈(63)相邻紧靠;所述A相线圈(61)、B相线圈(62)、C相线圈(63)分别包括位于外侧的高压线圈(8)以及位于内侧的低压线圈(9),其特征在于:所述铁芯(5)设有两层;所述A相线圈(61)的外侧部分、C相线圈(63)的外侧部分均设有铁压板(4),所述铁压板(4)设置在两层铁芯(5)之间;所述A...
【专利技术属性】
技术研发人员:李斌,
申请(专利权)人:无锡市电力变压器有限公司,
类型:发明
国别省市:江苏,32
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