公开(公告)号：US20240082751A1

公开(公告)日：2024-03-14

申请号：US18372256

申请日：2023-09-25

Applicant: The Ardry Group

Inventor： Ed Vance

IPC: B01D15/10 ,  G01N33/28 ,  H01F27/14

CPC classification number: B01D15/10 ,  G01N33/2847 ,  H01F27/14

Abstract: The disclosure includes embodiments of systems and methods for removing moisture from an electric power transformer. According to an embodiment, a moisture removal system includes a pump to move oil from the transformer into the system; one or more incoming oil moisture and temperature sensors to detect a first moisture level and temperature of oil; a processor to receive the moisture and temperature and determine an estimated paper moisture value of the insulation of the transformer, and compare the estimate to a target paper moisture value; and an overdry prevention bypass valve positioned in a first position to divert oil without drying when the estimated paper moisture value is equal to or less than the target value, and in a second position to channel oil through one or more drying cylinders when the estimated paper moisture value exceeds the target value.

公开(公告)号：US11742128B2

公开(公告)日：2023-08-29

申请号：US16584277

申请日：2019-09-26

Applicant: HITACHI ENERGY SWITZERLAND AG

Inventor： Ion C. Radu ,  George K. Frimpong

IPC: H01F27/26 ,  H01F27/02 ,  H01F3/00 ,  H01F27/06 ,  H01F27/14

CPC classification number: H01F27/025 ,  H01F3/00 ,  H01F27/06 ,  H01F27/14 ,  H01F27/26 ,  H01F27/263

Abstract: A transformer having a transformer core that forms a magnetic flux path between and through a top yoke, leg, and bottom yoke of the transformer core. A winding can be disposed about the leg. Further, a flitch plate, which can have at least one slot that is configured to reduce eddy losses generated by the winding, can be disposed adjacent to the leg and extend between the top yoke and the bottom yoke. The flitch plate can be clamped to the top and bottom yokes by top and bottom clamps, respectively. The top and bottom clamps can each include at least one cutout that reduces an attraction of stray flux from the winding and into the corresponding top and bottom clamps. Additionally, at least one of the top clamp and the bottom clamp can include an internal lattice structure.

公开(公告)号：US20230146976A1

公开(公告)日：2023-05-11

申请号：US17947201

申请日：2022-09-19

Applicant: STATE GRID SHANXI ELECTRIC POWER RESEARCH INSTITUTE

Inventor： Jinsong Li ,  Hua Yu ,  Qingsong Chen ,  Hong Liu ,  Guodong Li ,  Guangqi Mu ,  Shuai Li ,  Like Dong ,  Jin Zhao ,  Hui Yuan ,  Xuan Wang ,  Zhumao Lu ,  Min Jiang ,  Shuai Wang ,  Shengzhi Chang

IPC: G01D21/02 ,  H01F27/14 ,  G01K7/26

CPC classification number: G01D21/02 ,  H01F27/14 ,  G01K7/26 ,  H04W88/16

Abstract: Disclosed are a defect monitoring apparatus and detection method for a transformer oil conservator based on edge computing. The monitoring apparatus includes: a sensing terminal, an edge intelligent gateway, a monitoring terminal, an oil conservator defect monitoring cloud platform, and a client terminal. The edge intelligent gateway and the monitoring terminal are both disposed in a substation. The monitoring terminal is configured to access the edge intelligent gateway. The sensing terminal includes: an airflow sensor, an oil temperature sensor, an ambient temperature sensor, and a microwave oil level measurement assembly. The sensing terminal sends detection data information to the edge intelligent gateway, and the edge intelligent gateway stores and determines a category of the detection data information. The present disclosure can recognize capsule damage, partial blockage of a breathing circuit, leakage in the breathing circuit, moisture impurities in a breathing tube, and false oil level.

公开(公告)号：US20190172632A1

公开(公告)日：2019-06-06

申请号：US16266046

申请日：2019-02-02

Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

Inventor： Yunhua ZHANG ,  Jieyong MENG ,  Qingchang CHEN ,  Yihong LIU ,  Shilin SHEN

IPC: H01F27/32 ,  H01F27/28 ,  H01F27/12 ,  H01F27/14 ,  H01F27/245 ,  H01F27/04 ,  H01F27/02

CPC classification number: H01F27/325 ,  H01F27/02 ,  H01F27/04 ,  H01F27/12 ,  H01F27/14 ,  H01F27/245 ,  H01F27/2804 ,  H01F27/2823 ,  H01F27/32 ,  H01F27/324 ,  H01F2027/2809

Abstract: The present disclosure relates to a tank of a high-voltage generator including a tank body and a tank lid. There is an opening in the tank lid. The opening is connected to the bellows so as to counteract the volume change of the transformer oil and avoid generation of bubbles. The tank includes a positive transformer, a negative transformer, a bellows, and other components. The high-voltage winding is embedded in the PCBs. The outer insulating bushing is covered by the PCBs so as to improve the insulativity between the turns of the high-voltage winding. In addition, oil barriers may be placed between the positive and the negative transformers, or between the transformers and the ground so as to eliminate the bridge breakdown effect and make the electric field uniform. By means of said measures, the present disclosure improves the stability of the high-voltage generator.

公开(公告)号：US20180259444A1

公开(公告)日：2018-09-13

申请号：US15458014

申请日：2017-03-13

Applicant: ABB Schweiz AG

Inventor： Henry L. Buijs ,  Raphael N. Desbiens

IPC: G01N21/3504 ,  B01D19/00 ,  H01F27/32 ,  H01F27/12

CPC classification number: G01N21/3504 ,  B01D19/0031 ,  G01N21/031 ,  G01N21/33 ,  G01N21/65 ,  G01N2021/1704 ,  G01N2021/3595 ,  G01N2021/391 ,  G01N2021/399 ,  H01F27/14 ,  H01F2027/404

Abstract: Devices, systems, and methods for determining gas characteristics to monitor transformer operation include extracting gas from transformer fluid for analysis.

公开(公告)号：US20180158596A1

公开(公告)日：2018-06-07

申请号：US15580553

申请日：2016-06-22

Applicant: ABB Schweiz AG

Inventor： Julian Cardona

IPC: H01F27/32 ,  H01F27/02 ,  F16K17/196

CPC classification number: H01F27/321 ,  F16K17/196 ,  H01F27/02 ,  H01F27/14

Abstract: A transformer including a transformer tank, an expansion tank, and piping connecting the tanks enabling liquid to flow there between. The piping includes a valve configured for liquid to flow from the transformer to the expansion tank when the pressure is above a predefined first threshold and for preventing the liquid to flow from the transformer to the expansion tank when the pressure is below the first threshold. The valve is also configured for liquid to flow from the expansion to the transformer tank when the pressure is below a predefined second threshold and for preventing the liquid to flow from the expansion to the transformer tank when the pressure is above the predefined second threshold.

公开(公告)号：US09899142B2

公开(公告)日：2018-02-20

申请号：US15445941

申请日：2017-02-28

Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

Inventor： Yunhua Zhang ,  Jieyong Meng ,  Qingchang Chen ,  Yihong Liu ,  Shilin Shen

IPC: H01F27/30 ,  H01F27/10 ,  H01F27/02 ,  H01F5/00 ,  H01F27/32 ,  H01F27/28 ,  H01F27/245

CPC classification number: H01F27/325 ,  H01F27/02 ,  H01F27/04 ,  H01F27/12 ,  H01F27/14 ,  H01F27/245 ,  H01F27/2804 ,  H01F27/2823 ,  H01F27/32 ,  H01F27/324 ,  H01F2027/2809

Abstract: The present disclosure relates to a tank of a high-voltage generator including a tank body and a tank lid. There is an opening in the tank lid. The opening is connected to the bellows so as to counteract the volume change of the transformer oil and avoid generation of bubbles. The tank includes a positive transformer, a negative transformer, a bellows, and other components. The high-voltage winding is embedded in the PCBs. The outer insulating bushing is covered by the PCBs so as to improve the insulativity between the turns of the high-voltage winding. In addition, oil barriers may be placed between the positive and the negative transformers, or between the transformers and the ground so as to eliminate the bridge breakdown effect and make the electric field uniform. By means of said measures, the present disclosure improves the stability of the high-voltage generator.

公开(公告)号：US09831025B2

公开(公告)日：2017-11-28

申请号：US14651397

申请日：2012-12-12

Applicant: SIEMENS AKTIENGESELLSCHAFT

Inventor： Richard Peinbauer ,  Martin Weniger

IPC: H01F27/10 ,  H01F27/08 ,  F28D15/00 ,  H01F27/14 ,  H01F27/02 ,  F28F13/06 ,  F28D1/03 ,  F28D21/00

CPC classification number: H01F27/14 ,  F28D1/0316 ,  F28D1/0358 ,  F28D2021/0031 ,  F28D2021/0049 ,  F28F13/06 ,  H01F27/022

Abstract: An expansion radiator for a hermetically closed electrical transformer or a throttle. A heat exchange fluid is delivered to the radiator via an inflow, passed through an expansion shaft cavity formed by an expansion shaft and an associated cover part, and then drained off via an outflow. A flow guiding part which steers a flow direction of the heat exchange fluid is arranged in a mouth region between the inflow and the expansion shaft cavity.

公开(公告)号：US20170148565A1

公开(公告)日：2017-05-25

申请号：US15321820

申请日：2015-06-23

Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

Inventor： Yunhua ZHANG ,  Jieyong MENG ,  Qingchang CHEN ,  Yihong LIU ,  Shilin SHEN

IPC: H01F27/32 ,  H01F27/12 ,  H01F27/02 ,  H01F27/28

CPC classification number: H01F27/325 ,  H01F27/02 ,  H01F27/04 ,  H01F27/12 ,  H01F27/14 ,  H01F27/245 ,  H01F27/2804 ,  H01F27/2823 ,  H01F27/32 ,  H01F27/324 ,  H01F2027/2809

Abstract: The present disclosure relates to a tank of a high-voltage generator including a tank body and a tank lid. There is an opening in the tank lid. The opening is connected to the bellows so as to counteract the volume change of the transformer oil and avoid generation of bubbles. The tank includes a positive transformer, a negative transformer, a bellows, and other components. The high-voltage winding is embedded in the PCBs. The outer insulating bushing is covered by the PCBs so as to improve the insulativity between the turns of the high-voltage winding. In addition, oil barriers may be placed between the positive and the negative transformers, or between the transformers and the ground so as to eliminate the bridge breakdown effect and make the electric field uniform. By means of said measures, the present disclosure improves the stability of the high-voltage generator.

公开(公告)号：US20170103840A1

公开(公告)日：2017-04-13

申请号：US15129013

申请日：2015-03-27

Applicant: ABB Schweiz AG

Inventor： Mats Dahlund

IPC: H01F27/14

CPC classification number: H01F27/14 ,  H01F27/02 ,  H01F27/08

Abstract: A modular insulation fluid handling system for protecting insulation fluid of an inductive power device having an expansion vessel and for handling volume variations of the insulation fluid, the modular insulation fluid handling system includes a first protective housing including a resilient reservoir filled with an inert gas, a connector, and an adapter sealably connected to the inside of the resilient reservoir, an interface including a ventilation duct terminal and a reservoir terminal being sealably connected to the adapter, the connector is arranged between the adapter and the interface and configured to be connected to a connector of a second protective housing, and a vessel ventilation duct configured to be sealably connected to the expansion vessel and the ventilation duct terminal. The inside of the resilient reservoir is configured to be in hermetically sealed fluid communication with the expansion vessel via the adapter, the interface and the vessel ventilation duct.