公开(公告)号：US09728357B2

公开(公告)日：2017-08-08

申请号：US14596697

申请日：2015-01-14

Applicant: ABB TECHNOLOGY AG

Inventor： Andrea Tonin ,  Carlo Carollo ,  Giuseppe Leonardo Manco

IPC: H02H5/08 ,  H01H33/55 ,  H01H35/40 ,  H01H36/02 ,  H01F27/40

CPC classification number: H01H33/555 ,  H01F2027/404 ,  H01H35/40 ,  H01H36/02 ,  H02H5/08

Abstract: A safety device is disclosed for a power transformer containing a cooling liquid, and can include a shaped body having an inner chamber which is suitable to be at least partially immersed in cooling liquid and inside which gas can accumulate; a first floating element and a second floating element suitable to be at least partially immersed in and moved by cooling liquid; and a switch suitable to be actuated by the first floating element when the gas accumulated is such that the level of the cooling liquid in the inner chamber reaches a predetermined first threshold level and by the second floating element when the gas accumulated is such that the level of the cooling liquid in the inner chamber reaches a lower predetermined second threshold level, respectively. The first and second floating elements can be mounted on and move linearly relative to one or more corresponding guiding supports.

公开(公告)号：US20150131186A1

公开(公告)日：2015-05-14

申请号：US14596697

申请日：2015-01-14

Applicant: ABB TECHNOLOGY AG

Inventor： Andrea Tonin ,  Carlo Carollo ,  Giuseppe Leonardo Manco

IPC: H01H33/55 ,  H01H36/02 ,  H02H5/08 ,  H01H35/40

CPC classification number: H01H33/555 ,  H01F2027/404 ,  H01H35/40 ,  H01H36/02 ,  H02H5/08

Abstract: A safety device is disclosed for a power transformer containing a cooling liquid, and can include a shaped body having an inner chamber which is suitable to be at least partially immersed in cooling liquid and inside which gas can accumulate; a first floating element and a second floating element suitable to be at least partially immersed in and moved by cooling liquid; and a switch suitable to be actuated by the first floating element when the gas accumulated is such that the level of the cooling liquid in the inner chamber reaches a predetermined first threshold level and by the second floating element when the gas accumulated is such that the level of the cooling liquid in the inner chamber reaches a lower predetermined second threshold level, respectively. The first and second floating elements can be mounted on and move linearly relative to one or more corresponding guiding supports.

Abstract translation: 公开了一种用于包含冷却液的电力变压器的安全装置，并且可以包括具有内室的成形体，其适于至少部分地浸入冷却液体中，并且内部可以积聚气体; 第一浮动元件和第二浮动元件，其适于至少部分地浸入冷却液体并被冷却液体移动; 以及当积聚的气体使得内室中的冷却液体的水平达到预定的第一阈值水平时，适于由第一浮动元件致动的开关以及当积聚的气体使得第二浮动元件的水平达到等级 内腔中的冷却液分别达到较低的预定第二阈值水平。 第一和第二浮动元件可以相对于一个或多个相应的引导支撑件安装在其上并且线性地移动。