The multi-stage pressurization system of high-pressure nitrogen compressor is core supporting equipment for high-pressure nitrogen supply scenarios such as industrial high-pressure inflation, precision instrument testing, high-pressure reaction kettle gas supply, and laser cutting. Different from single-stage pressurization equipment, the multi-stage pressurization system adopts graded compression and gradual pressure rise design, which solves the problems of high temperature, low efficiency, and poor stability of single-stage high-pressure compression, and can stably output high-pressure nitrogen of 10MPa to 40MPa, meeting the high-pressure gas demand of industrial precision production and experimental research.
The system adopts a three-stage or four-stage series pressurization structure, including primary low-pressure compression, secondary medium-pressure compression, tertiary high-pressure compression, and final pressure stabilization treatment. Each stage of compression is equipped with independent cylinders, precision pistons, and cooling systems. The primary stage compresses ordinary pressure nitrogen to 1.5MPa to 2.0MPa, the secondary stage further boosts the pressure to 8MPa to 12MPa, and the tertiary stage completes ultra-high pressure pressurization to reach the set working pressure. The graded compression design can effectively reduce the compression ratio of a single stage, avoid excessive temperature rise caused by one-time high-pressure compression, and reduce the load and wear of a single compression unit, greatly improving the operational stability and service life of the compressor.
The system is equipped with a complete cooling, pressure regulation and safety protection system to ensure high-efficiency and safe operation. Each compression stage is matched with an air-cooled or water-cooled circulating cooling device, which timely takes away the heat generated by compression, controls the gas temperature within a safe range, and prevents nitrogen high-temperature decomposition and equipment thermal deformation. At the same time, the system is equipped with multi-stage pressure sensors, overpressure relief valves, and overload protection devices. Each stage of compression has independent pressure limit protection, which can automatically unload and alarm when the pressure exceeds the standard. The final stage is equipped with a precision pressure stabilization module to ensure that the output high-pressure nitrogen pressure is stable and fluctuation-free, meeting the strict pressure requirements of high-precision industrial processing and scientific research experiments. The whole system has the advantages of high pressurization efficiency, low energy consumption, stable operation and high safety.
