公开(公告)号：WO2022239043A1

公开(公告)日：2022-11-17

申请号：PCT/IT2022/050124

申请日：2022-05-12

Applicant: COMEM S.P.A.

Inventor： UGOLIN, Gianmaria ,  NUCCI, Francesca ,  TONIN, Andrea

IPC: H01F27/14 ,  B01D53/26 ,  B01D2257/80 ,  B01D53/261 ,  B01D53/263

Abstract: A method for replacing salts inside a self-regenerating breather device for power electrical apparatus, such as transformers, comprising the following steps: - disconnecting said self-regenerating breather device from a suction duct of a power electrical apparatus; - rotating and overturning said breather device; - opening a lower flange (15) of the breather device; - removing a split pin or another closing system and removing a closure net (16) of the tank (12) of said self-regenerating breather device, said tank (12) containing said salts to be replaced; - replacing said salts by completely overturning said breather device over a container; - further overturning said breather device; - filling said tank (12) with new salts.

公开(公告)号：WO2006069802A1

公开(公告)日：2006-07-06

申请号：PCT/EP2005/014179

申请日：2005-12-23

Applicant: COMEM S.P.A ,  DAL LAGO, Silvio

Inventor： DAL LAGO, Silvio

IPC: H01H9/00

CPC classification number: H01H9/0027 ,  H01H9/0005 ,  H01H9/0016

Abstract: An off-circuit tap changer (10, 20), with actuating mechanism, for electrical transformers, of the type comprising a frame which includes at least two elongated bars (11), to which a series of stud-type fixed contacts (12) is integrally connected, arranged orthogonally in series, and a set of movable rubbingblock contacts (14) which slide on the fixed contacts (12) thanks to the actuation of a worm screw (23) ; a nut thread is fitted or made in the end part of an insulating tube (27), coaxial with and outside the worm screw (23), so that the set of movable contacts (14) is fixed, by means of a shaped adaptor (28), in the end part of the insulating tube (27) opposite the nut thread. In this way, the nut thread is in a different position from that of the set of movable contacts (14) with respect to the overall length of the tap changer (10, 20), permitting the use of movable contacts (14) unconstrained by the dimensions of the tube (27) and/or worm screw (23).

Abstract translation: 一种具有用于电力变压器的致动机构的无励磁分接开关（10,20），其类型包括包括至少两个细长杆（11）的框架，一系列柱形固定触点（12） 一体地连接，串联布置，以及一组可动的摩擦块触点（14），其通过蜗杆（23）的致动而在固定触点（12）上滑动; 在与蜗杆（23）同轴并位于其外部的绝缘管（27）的端部安装或制造螺母螺纹，使得该组可动触头（14）通过成形的适配器（ 在绝缘管（27）的与螺母螺纹相对的端部处。 以这种方式，螺母螺纹相对于分接开关（10,20）的整个长度处于与一组可动触头（14）的位置不同的位置，允许使用不受约束的可动触头（14）的约束 管（27）和/或蜗杆（23）的尺寸。

公开(公告)号：WO2009019732A1

公开(公告)日：2009-02-12

申请号：PCT/IT2008/000512

申请日：2008-07-29

Applicant: COMEM S.P.A ,  DAL LAGO, Silvio

Inventor： DAL LAGO, Silvio

IPC: H01H33/55 ,  H01H36/02 ,  H01H35/40

CPC classification number: H01H35/405 ,  H01H33/555 ,  H01H36/02

Abstract: A Buchholz relay (1) for comprising a support frame (2) in contact with the oil, drive means (3) coupled to the support frame (2), switching means (4), operatively connected with the drive means (3) and suitable for an alarm circuit and/or a shutdown circuit of the electrical equipment, a regulation valve (5) of the oil flow, coupled to the support frame (2), suitable to be affected by the oil flow in order to define a first position in which it disables the shutdown circuit and a second position in which, if the oil discharge exceeds a certain threshold, it enables the shutdown circuit. The Buchholz relay (1) also includes biasing means associated with the support frame (2) and with the valve (5) to keep the latter in the first position.

Abstract translation: 一种用于包括与油接触的支撑框架（2）和联接到支撑框架（2）的驱动装置（3）的布氏体继电器（1），与驱动装置（3）可操作地连接的开关装置（4） 适用于电气设备的报警电路和/或关闭电路，耦合到支撑框架（2）的油流的调节阀（5），其适于受到油流的影响，以便限定第一 其停止关闭电路的位置和第二位置，其中如果排油超过某个阈值，则启用关闭电路。 Buchholz继电器（1）还包括与支撑框架（2）相关联的偏压装置和阀（5），以将其保持在第一位置。

公开(公告)号：WO2009011000A1

公开(公告)日：2009-01-22

申请号：PCT/IT2008/000336

申请日：2008-05-20

Applicant: COMEM S.p.A. ,  DAL LAGO, Silvio

Inventor： DAL LAGO, Silvio

IPC: H01H9/00

CPC classification number: H01H9/0016 ,  H01H2009/0022 ,  H01H2011/062

Abstract: A detachable connecting device for vacuum tap changers (10) for electrical transformers, of the type suitable to constitute at least a fixed contact (12), which is positioned on a tap changer (10) rod-shaped body (11) associated with drive actuators means (13) acting on supports (15) containing mobile contacts set to a reference voltage and sliding on fixed contacts (12); in particular, the detachable connecting device comprises a pin (23) on which is preassembled an elastic element kept in position by a peg (24) placed orthogonally to the walls of the pin (23). The pin (23), inserted into a shaped bush (29) which is inserted, in turn, in a respective opening of the rod-shaped body (11) of the tap changer (10), is pushed beyond the thickness of the aforesaid rod-shaped body (11) and rotated in any direction, in such a way to bring the peg (24) within a seat (39) provided on a surface of the bush (29).

Abstract translation: 一种用于电力变压器的真空抽头变换器（10）的可拆卸连接装置，其类型适于构成至少一个固定触点（12），其定位在与驱动器相关联的抽头变换器（10）的杆状体（11）上 致动器装置（13）作用在支撑件（15）上，该支撑件（15）包含设置为参考电压的移动触点并在固定触点（12）上滑动; 特别地，可拆卸的连接装置包括销（23），预先组装有弹性元件，弹性元件通过与销（23）的壁正交放置的钉（24）保持在适当位置。 插入到分接开关（10）的杆状体（11）的相应开口中的插入成形衬套（29）的销（23）被推到超过上述的厚度 杆状体（11）并且以任何方向旋转，以使钉（24）位于设置在衬套（29）的表面上的座（39）内。

公开(公告)号：WO2022239044A1

公开(公告)日：2022-11-17

申请号：PCT/IT2022/050125

申请日：2022-05-12

Applicant: COMEM S.P.A.

Inventor： UGOLIN, Gianmaria ,  NUCCI, Francesca ,  TONIN, Andrea

IPC: H01F27/14 ,  B01D53/26 ,  H01F27/40 ,  B01D2258/06 ,  B01D53/229 ,  B01D53/261 ,  H01F27/402

Abstract: A self-regenerating breather device of a power electrical apparatus, such as a power electrical transformer, comprising an external casing (10), an electronic board (1 1 ), at least one tank (12), which has air inlet openings (14) to pass dehumidifying air and outlet openings (14) to pass dehumidified air, said tank (12) containg absorption means, such as thermally regenerable granules or salts, for dehumidifying air coming from the outside, a regeneration system of said absorption means and means for activating said regeneration system, characterized in that said at least one tank (12) of the breather device communicates, through a duct (22), with an oil filtering device (15) and a one-way valve or membrane (16) is placed on the bottom of the breather device and is configured to open or close said inlet and outlet openings (14) of said at least one tank (12) depending on whether the breather device is, respectively, exhalating or discharging air to the outside or breathing air from the outside.

公开(公告)号：WO2009019733A1

公开(公告)日：2009-02-12

申请号：PCT/IT2008/000513

申请日：2008-07-29

Applicant: COMEM S.P.A. ,  DAL LAGO, Silvio

Inventor： DAL LAGO, Silvio

IPC: B01D53/26 ,  H01F27/14 ,  G01N5/02

CPC classification number: B01D53/261 ,  B01D53/0438 ,  B01D53/0454 ,  B01D2259/40009 ,  B01D2259/40088 ,  G01N5/025 ,  H01F27/14

Abstract: An improved dryer (1) dehumidifying the air intended for oil expansion tanks used in electrical equipments including a dehumidification container (2), which presents an inlet for the air to be dehumidified and an outlet (3) for the dehumidified air, absorption means (4), contained in the dehumidification container (2) and which dehumidify y the air coming from the outside, heating means (5), positioned inside the dehumidification container (2) and which regenerate the absorption means (4), detection means (6) of the dehumidification degree of the absorption means (4), operatively connected with the heating means (5), which determine the saturation state of the absorption means (4). The detection means (6) include a transducer (7), coupled to the dehumidification container (2), which directly measures the degree of dehumidification of the absorption means (4).

Abstract translation: 一种改进的干燥器（1），用于对用于包括除湿容器（2）的电气设备中的用于油箱的空气进行除湿，该除湿容器（2）具有用于被除湿的空气的入口和用于除湿空气的吸收装置（3） 4），其包含在除湿容器（2）中，并且对来自外部的空气进行除湿，位于除湿容器（2）内部并再生吸收装置（4）的加热装置（5），检测装置 吸收装置（4）的除湿度与加热装置（5）可操作地连接，其确定吸收装置（4）的饱和状态。 检测装置（6）包括耦合到除湿容器（2）的换能器（7），其直接测量吸收装置（4）的除湿程度。