US 11,988,714 B2
Gas density relay verification device and verification method therefor
Haiyong Jin, Shanghai (CN); Yehong Wu, Shanghai (CN); Xiaobeng Huang, Shanghai (CN); Wei Zeng, Shanghai (CN); Caixia Hao, Shanghai (CN); and Lele Wang, Shanghai (CN)
Assigned to Shanghai Roye Electric Co., Ltd., Shanghai (CN)
Appl. No. 17/640,781
Filed by SHANGHAI ROYE ELECTRIC CO., LTD., Shanghai (CN)
PCT Filed Aug. 26, 2020, PCT No. PCT/CN2020/111249
§ 371(c)(1), (2) Date Mar. 4, 2022,
PCT Pub. No. WO2021/043037, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 201910830149.5 (CN), filed on Sep. 4, 2019.
Prior Publication US 2022/0334183 A1, Oct. 20, 2022
Int. Cl. G01R 31/327 (2006.01)
CPC G01R 31/3278 (2013.01) 17 Claims
OG exemplary drawing
 
1. A gas density relay check device, comprising:
a temperature adjusting mechanism, at least one pressure sensor, at least one temperature sensor, a computer data processing system and a contact signal sampling unit, wherein
the temperature adjusting mechanism is an adjusting mechanism for adjusting temperatures, the temperature adjusting mechanism is configured to adjust temperature rise and fall of a temperature compensation element of a gas density relay, to enable the gas density relay to have a contact action;
the contact signal sampling unit, is connected with a contact of the gas density relay, and is configured to sample a contact signal generated when the contact of the gas density relay operates, and the contact signal includes alarm, and/or locking; and
the computer data processing system, is connected with the pressure sensor, the temperature sensor, the temperature adjusting mechanism and the contact signal sampling unit respectively, and is configured to complete control on the temperature adjusting mechanism, pressure value acquisition and temperature value acquisition, and/or gas density value acquisition, and to detect a contact signal operating value and/or a contact signal return value of the gas density relay.