The utility model discloses a low
dew point
nitrogen generating
system which comprises an
air compressor, an air inlet filter, a cold
drying and water removing mechanism, an adsorption type
drying machine and an air
storage tank, the air inlet filter is installed at an air inlet of the
air compressor, and an air outlet of the
air compressor is connected with the cold
drying and water removing mechanism through a pipeline. The cold drying and water removing mechanism comprises a radiator and a
heat exchanger which are connected in series through a pipeline, the pipeline led out of the air compressor is connected into the radiator, the radiator is connected with the
heat exchanger through a pipeline, the
heat exchanger is connected into the adsorption type drying
machine through a pipeline, the adsorption type drying
machine is connected with the air
storage tank through a pipeline, and all the pipelines are
metal pipelines. Joints at two ends of the pipeline are hydraulic transition joints; the
system adopts a combined water removal design, performs water removal on
compressed air through triple mechanisms, is high in water removal stability, can ensure the low
dew point of
nitrogen, and has the characteristics of high efficiency,
energy conservation, convenience in operation, economy,
environmental protection and the like.