US 12,203,468 B2
Device and method for monitoring oil pressure in oil cylinder of diaphragm compressor
Xueyuan Peng, Shaanxi (CN); Xueying Li, Shaanxi (CN); Jiahao Chen, Shaanxi (CN); and Xiaohan Jia, Shaanxi (CN)
Assigned to Xi'an Jiao Tong University, Shaanxi (CN)
Appl. No. 17/280,923
Filed by Xi'an Jiao Tong University, Shaanxi (CN)
PCT Filed Feb. 21, 2019, PCT No. PCT/CN2019/075694
§ 371(c)(1), (2) Date Mar. 29, 2021,
PCT Pub. No. WO2020/168512, PCT Pub. Date Aug. 27, 2020.
Prior Publication US 2021/0340974 A1, Nov. 4, 2021
Int. Cl. F04B 45/053 (2006.01); F04B 49/06 (2006.01); F04B 49/10 (2006.01); G01L 9/04 (2006.01)
CPC F04B 49/065 (2013.01) [F04B 45/0533 (2013.01); F04B 49/103 (2013.01); G01L 9/045 (2013.01); F04B 2201/1201 (2013.01); F04B 2201/1208 (2013.01); F04B 2201/1212 (2013.01); F04B 2207/043 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A device for monitoring oil pressure in an oil cylinder of a diaphragm compressor, comprising: a piston rod and a strain gauge circuit, wherein the strain gauge circuit comprises a strain gauge component and a bridge circuit connected, and the strain gauge component is arranged on a surface of the piston rod,
wherein the device further comprises a photoelectric sensor unit and a signal collection unit, wherein the photoelectric sensor unit comprises a flywheel, the flywheel and a photoelectric sensor are arranged correspondingly, the signal collection unit is connected to the strain gauge component, and the signal collection unit is connected to the photoelectric sensor; the signal collection unit is connected to a data processing unit.