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公开(公告)号：US4451870A
公开(公告)日：1984-05-29
申请号：US443565
申请日：1982-11-22
CPC分类号： G01R31/343 , H02K11/20
摘要： A capacitive signal coupler for use with a large dynamoelectric machine for coupling signals indicative of corona discharge from the stator bars to a monitor system is combined with an end cap made to fit over the connector extending between two stator bars. The end cap has a high voltage capacitor encapsulated in its walls. One lead from the capacitor is fastened to the connector with a screw before the end cap is installed. The other lead projects from the end cap and is connected to one terminal of a high voltage fuse. The fuse is secured to the end cap. The other terminal of the fuse is adapted to be connected to a cable leading to a monitor system. The coupler is preferably fastened to the lower end of the conductors of a vertical dynamoelectric machine where there is a full range of choice of location in the circuit voltages from line to neutral in two bar steps. The end cap is epoxy sealed in place to make an installation requiring little more space than the installation of a normal end cap.
摘要翻译： 用于与指示从定子线圈到监视器系统的电晕放电的信号耦合的用于大型电动机的电容式信号耦合器与制造成配合在两个定子条之间延伸的连接器上的端盖组合。 端盖具有封装在其壁中的高压电容器。 在安装端盖之前，使用螺丝将电容器的一根导线固定在连接器上。 另一个引线从端盖突出，并连接到高压保险丝的一个端子。 保险丝固定在端盖上。 保险丝的另一个端子适于连接到通向监视器系统的电缆。 耦合器优选地紧固到垂直电动机的导体的下端，其中在两个步骤中线路到中性的电路电压中存在全部选择的位置。 端盖是环氧树脂密封在适当位置，以安装需要比安装正常端盖更多的空间。
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公开(公告)号：US4095627A
公开(公告)日：1978-06-20
申请号：US656791
申请日：1976-02-10
摘要： According to the invention, electrically conductive paths are formed between the coil armor and the core laminations of dynamoelectric machines for inhibiting corona. This is achieved by injecting an uncured, semiconducting, elastomeric material between the coil sides and slot walls through the use of an injector tool inserted between them, and thereafter curing the material. The uncured material has a viscosity which enables it to be forced under pressure into these spaces, and when cured it has a resistance high enough not to form eddy current paths between laminations and yet low enough to conduct charge from the coil armor to the core. It is also capable of retaining its strength, elasticity, conductivity, etc., and remaining in place between the coils and core under vibrations, coolant flow, electric stresses, repeated temperature changes, etc., for the normal operating life of the machine.
摘要翻译： 根据本发明，在线圈护套和用于抑制电晕的电动机的铁芯叠片之间形成导电路径。 这通过使用插入它们之间的注射器工具在线圈侧和槽壁之间注入未固化的半导体弹性体材料，然后固化材料来实现。 未固化的材料具有使其能够在压力下被压在这些空间中的粘度，并且当其固化时，其具有足够高的电阻，不能在叠片之间形成涡流路径，并且仍然足够低以将电荷从线圈装甲传导到芯。 在机器的正常使用寿命期间，它还能够保持其强度，弹性，导电性等，并且在振动，冷却剂流动，电应力，重复的温度变化等下保持在线圈和芯之间的适当位置。
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公开(公告)号：US4112041A
公开(公告)日：1978-09-05
申请号：US791663
申请日：1977-04-28
CPC分类号： H01T19/02 , H02K15/12 , H02K3/40 , Y10T29/49009
摘要： According to the invention, electrically conductive paths are formed between the coil armor and the core laminations of dynamoelectric machines for inhibiting corona. This is achieved by injecting an uncured, semi-conducting, elastomeric material between the coil sides and the walls of the core slots by way of the air ducts in the core, and thereafter curing the material. The uncured material has a viscosity which enables it to be forced under pressure between the coil sides and slot walls by means of a pneumatically actuated gun assembly whose construction and operation are described in detail. The cured material has a resistance high enough not to form eddy current paths between laminations and yet low enough to conduct charge from the coil armor to the core. It is also capable of retaining its strength, elasticity, conductivity, etc., and remaining in place between the coils and core under vibrations, coolant flow, electric stresses, repeated temperature changes, etc., for the normal operating life of the machine.
摘要翻译： 根据本发明，在线圈护套和用于抑制电晕的电动机的铁芯叠片之间形成导电路径。 这是通过在线圈侧和芯槽的壁之间通过芯中的空气管道注入未固化的，半导电的弹性体材料，然后固化材料来实现的。 未固化的材料具有使其能够通过气动致动的枪组件在线圈侧和槽壁之间的压力下被强制施加的粘度，其结构和操作被详细描述。 固化的材料具有足够高的电阻，不能在叠片之间形成涡流路径，并且足够低以将电荷从线圈护套传导到芯。 在机器的正常使用寿命期间，它还能够保持其强度，弹性，导电性等，并且在振动，冷却剂流动，电应力，重复的温度变化等下保持在线圈和芯之间的适当位置。
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公开(公告)号：US4110900A
公开(公告)日：1978-09-05
申请号：US842757
申请日：1977-10-17
CPC分类号： H02K15/12 , H02K3/40 , Y10T29/49009
摘要： According to the invention, electrically conductive paths are formed between the coil armor and the core laminations of dynamoelectric machines for inhibiting corona. This is achieved by injecting an uncured, semiconducting, elastomeric material between the coil sides and slot walls through the use of an injector tool inserted between them, and thereafter curing the material. The uncured material has a viscosity which enables it to be forced under pressure into these spaces, and when cured it has a resistance high enough not to form eddy current paths between laminations and yet low enough to conduct charge from the coil armor to the core. It is also capable of retaining its strength, elasticity, conductivity, etc., and remaining in place between the coils and core under vibrations, coolant flow, electric stresses, repeated temperature changes, etc., for the normal operating life of the machine.
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公开(公告)号：US4068691A
公开(公告)日：1978-01-17
申请号：US656865
申请日：1976-02-10
摘要： According to the invention, electrically conductive paths are formed between the coil armor and the core laminations of dynamoelectric machines for inhibiting corona. This is achieved by injecting an uncured, semi-conducting, elastomeric material between the coil sides and the walls of the core slots by way of the air ducts in the core, and thereafter curing the material. The uncured material has a viscosity which enables it to be forced under pressure between the coil sides and slot walls. The cured material has a resistance high enough not to form eddy current paths between laminations and yet low enough to conduct charge from the coil armor to the core. It is also capable of retaining its strength, elasticity, conductivity, etc., and remaining in place between the coils and core under vibrations, coolant flow, electric stresses, repeated temperature changes, etc., for the normal operating life of the machine.
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公开(公告)号：US4422320A
公开(公告)日：1983-12-27
申请号：US344795
申请日：1982-02-01
CPC分类号： G01N3/30 , G01N2203/0039
摘要： A device for determining the tightness of a wedge used to close the slot of a dynamoelectric machine and firmly restrain the conductors installed in the slot, is in the form of a tapping hammer or similar tapping tool. The heat of the hammer contains an accelerometer which outputs a pulse signal having a duration representing the time the head is in contact with the wedge. The pulse signal duration is also related to the tightness of the wedge. Associated electronic circuitry measures the time duration and displays the measured value on a digital display on the hammer unless this display is inhibited. The strength of each blow is assessed by an integrating circuit which gives an output related to the strength of the blow. If this output is not within predetermined upper and lower limits, defining a "window", the display of the measured time duration is inhibited and instead the display indicates that the blow was too hard or too weak. The operator quickly learns to strike a wedge with a force that is within acceptable limits, i.e., within the "window". The display is reset each time a new blow is struck. The device is battery powered and portable and preferably the display shuts off if there is an inactive time duration, say 30 seconds, after one blow is struck.
摘要翻译： 用于确定用于闭合电动机的槽的楔子的紧密度并且牢固地限制安装在槽中的导体的装置是敲击锤或类似的攻丝工具的形式。 锤的热量包含加速度计，其输出具有表示头与楔接触的时间的持续时间的脉冲信号。 脉冲信号持续时间也与楔形件的紧密度有关。 相关的电子电路测量持续时间，并在锤上的数字显示屏上显示测量值，除非禁止显示。 每个吹气的强度由积分电路评估，该积分电路给出与吹气强度相关的输出。 如果该输出不在预定的上限和下限范围内，则定义“窗口”，则禁止显示测量的持续时间，而显示屏显示打击太硬或太弱。 操作员快速学会用能够在可接受的限度内即即“窗口”内的力敲击楔形物。 每次发生新的打击时，显示屏都会重置。 该设备是电池供电和便携式的，并且优选地，如果在一次打击之后存在不活动的持续时间，例如30秒，则显示器关闭。
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