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    Method for impregnating and embedding electrical windings
    2.
    发明授权
    Method for impregnating and embedding electrical windings 失效
    浸渍和嵌入电绕组的方法

    公开(公告)号：US4576768A

    公开(公告)日：1986-03-18

    申请号：US624983

    申请日：1984-06-27

    申请人： Helmut Markert ,  Wolfgang Rogler ,  Wolfgang Bendel ,  Friedrich Alber

    发明人： Helmut Markert ,  Wolfgang Rogler ,  Wolfgang Bendel ,  Friedrich Alber

    IPC分类号： H01F41/12 ,  H02K15/12 ,  B29C35/02

    CPC分类号： H01F41/127

    摘要： The invention relates to a method for impregnating and embedding electrical windings, especially coils of transformers, by means of an impregnating or casting resin based upon polyepoxide-polyisocyanate mixtures in the presence of a reaction accelerator latent at the processing conditions, which employs conditions that prevent the formation of gas and shrinkage voids in the cast in winding. To this end, the resin including, if applicable, additives, is dried at reduced pressure and while stirring at temperatures of up to 110.degree. C. and the winding is cast-in with the dried resin at reduced pressure and at temperature of up to 110.degree. C.; then the reduced pressure is removed and the winding is exposed to overpressure. Subsequently, generating by an elevated temperature in the electrical winding by Joule heat in the conductor, the cross-linking reaction of the resin is started and is controlled as a function of the reaction heat, until the winding is removed from the mold and post-hardened.

    摘要翻译： 本发明涉及一种用于在处理条件下在反应促进剂潜在的存在下，通过基于聚环氧化物 - 多异氰酸酯混合物的浸渍或浇注树脂来浸渍和嵌入电绕组，特别是变压器线圈的方法，该方法采用防止 在绕组中形成气体和收缩空隙。 为此，包括（如果适用的话）添加剂的树脂在减压下干燥并在高达110℃的温度下搅拌的同时，将干燥的树脂在减压和最高达 110℃。 然后去除减压，并将绕组暴露于过压。 随后，通过在导体中的焦耳热在电绕组中产生高温，树脂的交联反应开始并作为反应热的函数被控制，直到绕组从模具中除去， 硬化

    Method of manufacturing transformer windings embedded in casting resin
    4.
    发明授权
    Method of manufacturing transformer windings embedded in casting resin 失效
    制造嵌入铸塑树脂的变压器绕组的方法

    公开(公告)号：US4540536A

    公开(公告)日：1985-09-10

    申请号：US531778

    申请日：1983-09-13

    申请人： Gerhard Altmann ,  Wolfgang Bendel ,  Rudolf Dedelmahr ,  Richard Pfeiffer

    发明人： Gerhard Altmann ,  Wolfgang Bendel ,  Rudolf Dedelmahr ,  Richard Pfeiffer

    IPC分类号： H01F41/12 ,  B29C6/02

    CPC分类号： H01F41/127

    摘要： Method of manufacturing a transformer winding embedded in casting resin by winding coils respectively by themselves and independently of one another for disposition thereof in tandem in axial direction of the winding includes placing the wound coils in a substantially annular casting mold having an inner and an outer jacket, with respective impregnated corrugated mats of insulating material as spacers disposed between the inner jacket and the coils as well as between the coils and the outer jacket, the inner and the outer jackets being fixed between mold end walls at respective ends of the casting mold; and disposing the casting mold containing the wound coils in an evacuated chamber and pouring casting resin into the casting mold through an axially parallel slot formed in the outer jacket thereof. Additionally included are spreading the inner jacket in radial direction so as to permanently deform the inner spacer to a dimension at which the radial extent of the inner spacer is reduced, the inner jacket being formed with axially parallel edges at ends thereof overlapping in circumferential direction and slidable on one another during the deformation so as to spread the inner jacket in radial direction; fixing the coils of the winding on the inner spacer against movement in axial direction; and surrounding respective edges at the ends of the inner and the outer jackets with an elastic layer at the inner face of the respective mold end walls.

    摘要翻译： 通过缠绕线圈分别缠绕在铸造树脂中的变压器绕组本身彼此独立地制造以在绕组的轴向方向串联布置的方法包括将卷绕的线圈放置在具有内部和外部套管的大致环形的铸模中 ，其中绝缘材料的各自浸渍的波纹垫作为设置在内护套和线圈之间以及线圈和外护套之间的间隔件，内外套和夹套固定在铸模的相应端的模端壁之间; 将含有卷绕的线圈的铸模设置在抽真空室中，并且通过形成在其外套中的轴向平行的槽将铸塑树脂浇注到铸模中。 另外包括的是将内护套沿径向方向扩展，以便将内间隔件永久地变形到内间隔件的径向范围减小的尺寸，内护套的端部在圆周方向上重叠形成有轴向平行的边缘， 在变形期间彼此可滑动，以便沿径向方向扩展内护套; 将所述绕组的线圈固定在所述内隔板上，以防止轴向移动; 并且在相应的模具端壁的内表面处具有在内套和外套的端部处的具有弹性层的相应边缘。