Abstract: The present disclosure provides a device for monitoring oil pressure in an oil cylinder of a diaphragm compressor, including a piston rod and a strain gauge circuit. The strain gauge circuit includes a strain gauge component and a bridge circuit connected, and the strain gauge component is arranged on the surface of the piston rod. A strain gauge component is noninvasively arranged on the piston rod of the diaphragm compressor to measure the load of the piston rod, such that the oil pressure can be measured indirectly, and thus the oil pressure of the diaphragm compressor can be measured nondestructively. Nondestructive and noninvasive monitoring of the diaphragm compressor is safe and reliable, and can achieve accurate monitoring of the oil pressure especially in high-pressure working conditions.

Abstract: The present application discloses a high-pressure diaphragm compressor. The high-pressure diaphragm compressor includes a gas-side diaphragm head and an oil-side diaphragm head; a diaphragm and an oil distribution disc are disposed between the gas-side diaphragm head and the oil-side diaphragm head, the diaphragm and the oil distribution disc are clamped between the gas-side diaphragm head and the oil-side diaphragm head, and a gas-side diaphragm cavity and an oil-side diaphragm cavity are respectively formed between the diaphragm and the gas-side diaphragm head as well as between the diaphragm and the oil distribution disc; an oil cylinder hole is provided in the oil-side diaphragm head, a piston is arranged in the oil cylinder hole, and a piston rod is disposed below the piston; and the upper end of the piston rod abuts onto the lower end of the piston, the piston may be separated from the piston rod.

Abstract: A device and a method for monitoring oil pressure and gas pressure of a diaphragm compressor are provided. The monitoring device includes a gas cylinder and a strain gauge circuit. The gas cylinder includes a cylinder head. The strain gauge circuit includes a strain gauge component and a bridge circuit that are connected to each other, and the strain gauge component is arranged on the cylinder head.

Abstract: The present disclosure provides a device for monitoring oil pressure in an oil cylinder of a diaphragm compressor, including a piston rod and a strain gauge circuit. The strain gauge circuit includes a strain gauge component and a bridge circuit connected, and the strain gauge component is arranged on the surface of the piston rod. A strain gauge component is noninvasively arranged on the piston rod of the diaphragm compressor to measure the load of the piston rod, such that the oil pressure can be measured indirectly, and thus the oil pressure of the diaphragm compressor can be measured nondestructively. Nondestructive and noninvasive monitoring of the diaphragm compressor is safe and reliable, and can achieve accurate monitoring of the oil pressure especially in high-pressure working conditions.