US 12,259,300 B2
Self-diagnostic gas density relay and use method thereof
Haiyong Jin, Shanghai (CN); Tiexin Xia, Shanghai (CN); Zhengcao Guo, Shanghai (CN); Caixia Hao, Shanghai (CN); and Haisheng Jin, Shanghai (CN)
Assigned to SHANGHAI ROYE ELECTRIC CO., LTD., Shanghai (CN)
Appl. No. 17/997,546
Filed by SHANGHAI ROYE ELECTRIC CO., LTD., Shanghai (CN)
PCT Filed Feb. 9, 2021, PCT No. PCT/CN2021/076128
§ 371(c)(1), (2) Date Oct. 29, 2022,
PCT Pub. No. WO2021/218283, PCT Pub. Date Nov. 4, 2021.
Claims priority of application No. 202010355098.8 (CN), filed on Apr. 29, 2020.
Prior Publication US 2023/0168145 A1, Jun. 1, 2023
Int. Cl. G01M 3/32 (2006.01); G01L 7/04 (2006.01); G01N 9/00 (2006.01); G01R 31/327 (2006.01); H01H 11/00 (2006.01); H01H 33/56 (2006.01); H01H 35/26 (2006.01); H01H 35/32 (2006.01); H01H 35/36 (2006.01)
CPC G01M 3/3272 (2013.01) [G01L 7/041 (2013.01); G01L 7/045 (2013.01); G01N 9/002 (2013.01); G01N 2009/006 (2013.01); G01R 31/327 (2013.01); H01H 11/0062 (2013.01); H01H 33/563 (2013.01); H01H 35/26 (2013.01); H01H 35/32 (2013.01); H01H 35/36 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A self-diagnostic gas density relay, comprising a gas density relay body, a gas density detection sensor, at least one diagnostic sensor, and an intelligent control unit;
the gas density relay body comprises: a housing, and a pressure detection element, a temperature compensation element, a signal generator, and a signal action mechanism which are arranged in the housing;
the gas density detection sensor is communicated with the gas density relay body, and used for acquiring a pressure value, a temperature value, and/or a gas density value;
the diagnostic sensor is arranged in the housing of the gas density relay body, and configured to acquire deformation quantities of components that generate deformations, and/or positions or displacement quantities of components that generate displacements when the pressure changes, or the temperature changes, or the gas density changes in the gas density relay body; and
the intelligent control unit is respectively connected with the gas density detection sensor and the diagnostic sensor, receives data acquired by the gas density detection sensor and/or the diagnostic sensor, and diagnoses whether a current working state of the gas density relay body is normal or not by judging whether the deformation quantities, and/or the positions, and/or the displacement quantities are within preset thresholds or not, or by comparing the deformation quantities, and/or the positions, and/or the displacement quantities with preset standard values corresponding thereto; or, the intelligent control unit uploads the received data to a background, and the background diagnoses whether the current working state of the gas density relay body is normal or not by judging whether the deformation quantities, and/or the positions, and/or the displacement quantities are within the preset thresholds or not, or by comparing the deformation quantities, and/or the positions, and/or the displacement quantities with preset standard values corresponding thereto.