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2. 发明授权

US5736655A Method for evaluating a remaining life of a rotating machine coil 失效
标题翻译：用于评估旋转机器线圈的剩余寿命的方法
公开(公告)号：US5736655A
公开(公告)日：1998-04-07
申请号：US660591
申请日：1996-06-11
申请人： Shinobu Sekito , Yukio Kanazawa , Norikazu Arima , Hiromichi Ito , Susumu Nagano , Makoto Tari , Takeshi Tanii
发明人： Shinobu Sekito , Yukio Kanazawa , Norikazu Arima , Hiromichi Ito , Susumu Nagano , Makoto Tari , Takeshi Tanii
IPC分类号： H02K11/00 , G01N33/00 , G01N33/20 , G01N33/44 , G01R31/06 , H02K15/04 , H02H7/08
CPC分类号： G01R31/346 , G01N33/20
摘要： A remaining life of a stator coil resulting from galvanic corrosion between different kinds of metals in a rotating machine adopting a water cooling system and remaining life of a stator coil's insulating layer resulting from a wet heat degeneration can be positively and integrally evaluated according to the present invention by sampling a brazing section between the stator coil clip and copper wires, cutting off the sampled brazing section in a copper wire array direction, measuring a joined section brazed with a brazing material as a copper wire direction length and finding an effective sealing length of that brazing section or sampling an insulating layer of the stator coil, finding infrared spectra of the insulating layer, comparing the infrared spectra of the insulating layer of the stator coil with infrared spectra of a healthy stator coil's insulating layer not penetrated by water, finding difference spectra of an ester group of an epoxy resin used as a bonding agent of the insulating layer and predicting a period of water penetration into the stator coil's insulating layer as a wet heat degeneration period, on the basis of the difference spectra of an ester group, with the use of a relation between the difference spectra of the ester group initially found and an aging time.
摘要翻译：由采用水冷系统的旋转机械中的不同种类的金属之间的电偶腐蚀导致的定子线圈的剩余寿命和根据本发明的定子线圈的绝缘层的剩余寿命可以根据现在进行积极且一体的评估通过对定子线圈夹和铜线之间的钎焊部进行取样来切断铜线排列方向的取样钎焊部，测定钎焊钎焊材料的接合部的铜线方向长度，求出有效密封长度对该定子线圈的绝缘层进行钎焊，或者对定子线圈的绝缘层进行取样，找到绝缘层的红外光谱，将定子线圈的绝缘层的红外光谱与健康的定子线圈绝缘层的红外光谱进行比较，用作绝缘体的粘合剂的环氧树脂的酯基的光谱基于酯基的差分光谱，使用最初发现的酯基的差分谱之间的关系来预测作为湿热变性周期的水渗入定子线圈绝缘层的时间段和老化时间。

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