METHOD FOR INCREASING GAS PRESSURE, A MEMBRANE COMPRESSOR FOR CARRYING OUT SAID METHOD, A FLOW DISTRIBUTOR AND DEVICE FOR CONTROLLING SAID FLOW DISTRIBUTOR

摘要

The invention relates to compressor engineering, in particular to membrane fluid force operating compressors used for producing high-pressurised and high-vacuumed gases without oil vapour impurities. The inventive method for increasing pressure in a membrane compressor in which a gas is displaceable by a working fluid and which is carried out in an automatic cyclic operation consists in setting up a gas area boundaries in the compressor working chambers, introducing an initial gas volume into said gas area from a low-pressure gas source at a certain pressure, in setting fluid area boundaries in which a working fluid-flow is directed by means of the flow distributor at another pressure, in compressing the initial gas volume to a small size and a high pressure by a force which is applied thereto through a membrane from the working liquid side, removing the thus compressed gas from the gas area to a receiver, switching the fluid flows from one chamber into another by means of said flow distributor, determining the moment for switching the working fluid flows from one chamber to another chamber by means of the flow distributor control device which is switchable from one stable position into another stable position, after switching, shutting off the fluid supply by means of said flow distributor and draining said fluid from one chamber, directing the fluid flow to the other chamber containing the initial gas volume, filling the compressor hydraulic system with the working fluid which is under an excessive pressure with respect to a pressure outside the system and in sealing it. The operation of the flow distributor is controlled by working fluid contained in the system with the aid of the controlled device switchable from one stable position into another stable position by the action of the incoming working fluid flow. The moment for switching the fluid flows is determined by a pressure control device arranged in the control device. The switching of the working fluid flows is carried out when the incoming fluid pressure force is equal to the force determined by the specified pressure force.