Method of preparation of sand casting moulds with a protective coating

    公开(公告)号:US11179768B2

    公开(公告)日:2021-11-23

    申请号:US17101130

    申请日:2020-11-23

    Applicant: ABB sp. z o.o.

    Abstract: A method of making sand casting moulds with a protective coating for a multiple process of reactive moulding of insulation components and products made by filling up a mould cavity with polymer materials, including composites, based particularly on epoxy resins or composites based on cellulose materials, the method wherein the process of infiltration of the mould structure is performed chemically by soaking through the raw mould structure with chemosetting or thermosetting material. The application of a protective layer on external surfaces of a sand casting mould is done by means of any spraying, immersion or deposition method, whereas material with anti-adhesive properties is used for the protective coating in the form of organic chemosetting, thermosetting, light-curing material or in the form of inorganic material, including metal.

    METHOD OF PREPARATION OF SAND CASTING MOULDS WITH A PROTECTIVE COATING

    公开(公告)号:US20210069775A1

    公开(公告)日:2021-03-11

    申请号:US17101130

    申请日:2020-11-23

    Applicant: ABB sp. z o.o.

    Abstract: A method of making sand casting moulds with a protective coating for a multiple process of reactive moulding of insulation components and products made by filling up a mould cavity with polymer materials, including composites, based particularly on epoxy resins or composites based on cellulose materials, the method wherein the process of infiltration of the mould structure is performed chemically by soaking through the raw mould structure with chemosetting or thermosetting material. The application of a protective layer on external surfaces of a sand casting mould is done by means of any spraying, immersion or deposition method, whereas material with anti-adhesive properties is used for the protective coating in the form of organic chemosetting, thermosetting, light-curing material or in the form of inorganic material, including metal.

    AN ENCLOSURE FOR SECONDARY DISTRIBUTION MODULAR SWITCHGEARS
    3.
    发明申请
    AN ENCLOSURE FOR SECONDARY DISTRIBUTION MODULAR SWITCHGEARS 审中-公开
    二次分配模块化开关的封装

    公开(公告)号:WO2010138007A2

    公开(公告)日:2010-12-02

    申请号:PCT/PL2010/000038

    申请日:2010-05-23

    CPC classification number: E04H5/04 E04B1/80 E04B5/14 E04B5/29

    Abstract: The subject of the invention is an enclosure for secondary distribution modular switchgears, applicable in protecting switchgears both against adverse weather conditions and against unauthorized inspections of high, medium and low voltage switch gear, and also against accidental access by unauthorized persons, or by wild animals and birds. The inventive enclosure containing a base-frame (3) to which the enclosure walls are attached and which is provided with a roof cover is characterized in that the base frame (3) is formed by a metal truss and contains two extreme base-frame modules, the left one (20) and the right one (23,) and at least one middle module (21 and/or (22) which are connected with one another by means of a pair of permanent connections formed by a socket (27a) and a prong (27b) and fastening and earthing plates (28a, 28b).

    Abstract translation: 本发明的主题是用于二次配电模块式开关柜的外壳,适用于保护开关柜不受恶劣天气条件和未经授权的高,中,低压开关装置的检查,也可防止未经授权的人员或野生动物意外进入 和鸟。 本发明的外壳包含一个底架(3),其上安装有外壳壁并设有屋顶盖,其特征在于,底架(3)由金属桁架形成并且包含两个极端的基架模块 ,左一个(20)和右一个(23)以及至少一个中间模块(21和/或(22))通过由插座(27a)形成的一对永久连接彼此连接, (27b)和紧固接地板(28a,28b)。

    SURGE ARRESTER COMPRISING AN OPTICAL FAULT INDICATOR
    4.
    发明申请
    SURGE ARRESTER COMPRISING AN OPTICAL FAULT INDICATOR 审中-公开
    包含光学故障指示器的扫描仪

    公开(公告)号:WO2007117163A1

    公开(公告)日:2007-10-18

    申请号:PCT/PL2007/000011

    申请日:2007-03-09

    CPC classification number: H01C7/12 H01C7/102 H01C7/108

    Abstract: The subject of the invention is a surge arrester, and especially a low- voltage surge arrester. The surge arrester is applicable in protecting AC and DC low-voltage networks against multiple lightning surges and switching overvoltage. The surge arrester is characterized in that it contains at least one oxide varistor (1) housed in an insulating casing (4), connection terminals (2) and (3) and a visual fault indicator (6) which is made of material that changes its state of aggregation at a temperature exceeding that defined as a safe operating temperature of the surge arrester.

    Abstract translation: 本发明的主题是避雷器,特别是低压电涌放电器。 避雷器适用于保护交流和直流低压网络,防止多次雷击浪涌和开关过电压。 电涌放电器的特征在于它包含容纳在绝缘壳体(4),连接端子(2)和(3)中的至少一个氧化物变阻器(1)和由变化的材料制成的视觉故障指示器(6) 其在超过限定为避雷器安全工作温度的温度下的聚集状态。

    METHOD OF PREPARATION OF SAND CASTING MOULDS WITH A PROTECTIVE COATING

    公开(公告)号:WO2019231341A1

    公开(公告)日:2019-12-05

    申请号:PCT/PL2019/050032

    申请日:2019-05-27

    Applicant: ABB SP. Z O.O.

    Abstract: A method of making sand casting moulds with a protective coating for a multiple process of reactive moulding of insulation components and products made by filling up a mould cavity with polymer materials, including composites, based particularly on epoxy resins or composites based on cellulose materials, the method characterised in that the process of infiltration of the mould structure is performed chemically by soaking through the raw mould structure (1) with chemosetting or thermosetting material. The application of a protective layer (3) on external surfaces of a sand casting mould is done by means of any spraying, immersion or deposition method, whereas material with anti-adhesive properties is used for the protective coating in the form of organic chemosetting, thermosetting, light-curing material or in the form of inorganic material, including metal.

    CAPACITIVE INSULING CORE OF A HIGH-VOLTAGE BUSHING
    7.
    发明申请
    CAPACITIVE INSULING CORE OF A HIGH-VOLTAGE BUSHING 审中-公开
    高电压母线的电容绝缘芯

    公开(公告)号:WO2006001724A1

    公开(公告)日:2006-01-05

    申请号:PCT/PL2005/000041

    申请日:2005-06-23

    CPC classification number: H01B17/28

    Abstract: The subject of the invention is a capacitive insulating core of a high­voltage bushing applicable in electric power equipment, and especially in power transformers. The inventive core is formed by winding layers of electrically insulating material around a cylindrical mandrel, between which layers there are inserted at certain intervals sheets of conducting material shaping the electric field in the bushing. At least one sheet of conducting material that is placed in the core between the layers of the electrically insulating material is a structure made on the basis of paper or woven or unwoven fabric containing conducting particles suspended in it forming a percolative network electrically conducting in the sheet plane.

    Abstract translation: 本发明的主题是适用于电力设备,特别是电力变压器的高压套管的电容绝缘芯。 本发明的核心是通过围绕圆柱形心轴卷绕电绝缘材料层而形成的,在这些层之间以一定的间隔以一定的间隔插入成形衬套中的电场的导电材料片。 放置在电绝缘材料层之间的芯中的至少一片导电材料是基于纸或织造或非织造织物制成的结构,其包含悬浮在其中的导电颗粒,形成在片材中导电的渗透网络 平面。

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