公开(公告)号：US12099093B2

公开(公告)日：2024-09-24

申请号：US17776219

申请日：2020-12-09

申请人： SHANGHAI ROYE ELECTRIC CO., LTD.

发明人： Min Chang ,  Xiaobeng Huang ,  Tiexin Xia ,  Zhengcao Guo ,  Wei Zheng ,  Haiyong Jing

IPC分类号： G01R31/327 ,  G01D21/02 ,  G01N9/26 ,  H01H35/28

CPC分类号： G01R31/3274 ,  G01D21/02 ,  G01N9/266 ,  H01H35/28

摘要： The present disclosure provides a method for modifying a gas density relay and a gas density relay having an online self-check function and a check method therefor. The gas density relay having an online self-check function is used for high-voltage and medium-voltage electrical devices, and includes a gas density relay body, a gas density detection sensor, a gas path blocking pressure regulation mechanism, an online check contact signal sampling unit and an intelligent control unit. The intelligent control unit controls a blocking member of the gas path blocking pressure regulation mechanism to move, so as to block a gas path between a first interface and a second interface. Moreover, a volume of a sealed cavity changes, a gas pressure of the gas density relay body slowly falls, thereby generating contact action, the contact action is transmitted to the intelligent control unit by means of the online check contact signal sampling unit, and the intelligent control unit detects an alarm and/or blocking contact signal action value and/or return value according to a density value during the contact action, such that check can be completed without maintenance personnel on site, and the reliability and efficiency of a power grid are greatly improved while cost is lowered.