High-pressure diaphragm compressor

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.

What is claimed is: 
     
         1 . A high-pressure diaphragm compressor, wherein the high-pressure diaphragm compressor comprises a gas-side diaphragm head and an oil-side diaphragm head which are sequentially disposed in an axial direction;
 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 disposed in the oil cylinder hole, and a piston rod is disposed below the piston; and an upper end of the piston rod abuts onto a lower end of the piston, the piston may be separated from the piston rod, and a lower end of the piston rod is connected with a compressor crank-connecting rod mechanism.   
     
     
         2 . The high-pressure diaphragm compressor according to  claim 1 , wherein the oil-side diaphragm cavity is connected with a low-pressure oil pump through an oil supplementing pipeline; the low-pressure oil pump can adjust an oil supplementing amount according to a pressure in the oil-side diaphragm cavity; and a one-way valve is disposed on the oil supplementing pipeline, and an opening of the one-way valve faces the low-pressure oil pump. 
     
     
         3 . The high-pressure diaphragm compressor according to  claim 2 , wherein the low-pressure oil pump is a gear pump or a cycloid pump. 
     
     
         4 . The high-pressure diaphragm compressor according to  claim 2 , wherein an energy accumulator is further disposed on the oil supplementing pipeline; and the energy accumulator is located between the one-way valve and the low-pressure oil pump. 
     
     
         5 . The high-pressure diaphragm compressor according to  claim 1 , wherein the piston is a plunger, a piston ring seal structure, or a spring seal structure. 
     
     
         6 . The high-pressure diaphragm compressor according to  claim 1 , wherein an oil cylinder sleeve mounting cavity is disposed in the oil-side diaphragm head, an oil cylinder sleeve is disposed in the oil cylinder sleeve mounting cavity, and an inner hole of the oil cylinder sleeve forms the oil cylinder hole. 
     
     
         7 . The high-pressure diaphragm compressor according to  claim 1 , wherein the gas-side diaphragm head comprises a gas-side cylinder cover and a gas distribution disc, the gas distribution disc is located below the gas-side cylinder cover, the diaphragm and the gas distribution disc are clamped between the gas-side cylinder cover and the oil distribution disc, and the gas-side diaphragm cavity and the oil-side diaphragm cavity are respectively formed between the diaphragm and the gas distribution disc as well as between the diaphragm and the oil distribution disc. 
     
     
         8 . The high-pressure diaphragm compressor according to  claim 1 , wherein the oil-side diaphragm cavity is connected to an overflow valve through an oil overflow pipeline.