US 12,292,358 B2
Gas density relay with sealing performance self-checking function, and implementation method therefor
Haiyong Jin, Shanghai (CN); Tiexin Xia, Shanghai (CN); Zhengcao Guo, Shanghai (CN); Haisheng Jin, Shanghai (CN); and Qing Tan, Shanghai (CN)
Assigned to Shanghai Roye Electric Co., Ltd., Shanghai (CN)
Appl. No. 17/997,544
Filed by SHANGHAI ROYE ELECTRIC CO., LTD., Shanghai (CN)
PCT Filed Feb. 9, 2021, PCT No. PCT/CN2021/076133
§ 371(c)(1), (2) Date Oct. 29, 2022,
PCT Pub. No. WO2021/218287, PCT Pub. Date Nov. 4, 2021.
Claims priority of application No. 202010355134 (CN), filed on Apr. 29, 2020.
Prior Publication US 2023/0221209 A1, Jul. 13, 2023
Int. Cl. G01M 3/28 (2006.01); G01N 9/26 (2006.01)
CPC G01M 3/2869 (2013.01) [G01N 9/266 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A gas density relay with sealing performance self-checking function, comprising a gas density relay body, a sealing performance detector and an intelligent control unit, wherein
the sealing performance detector is disposed inside or outside the gas density relay body and communicated with a gas path in the gas density relay body or an inner cavity of the gas density relay body, and obtains gas leakage information of the gas density relay body by collecting the gas pressure change, current change, gas concentration change or gas density value change on the gas path or in the inner cavity; and
the intelligent control unit is connected with the sealing performance detector, receives the data monitored by the sealing performance detector, and performs diagnosis to obtain the current sealing performance of the gas density relay body.