The invention relates to a device for denoising, ice blockage prevention and cold energy utilization of a
natural gas pipeline. The device relates to the technical field of pipeline systems, and is characterized in that two sections of
natural gas pipelines (4) are connected into a whole through a pressure regulating valve (2); a heat exchange flat
pipe (1) with an outer
coating (3) is wrapped on the whole
natural gas pipeline (4) and the pressure regulating valve (2); a
solar heater (8), a summer indoor cold supply
system for working and living areas (9) and a natural
gas heating furnace (10) are connected in parallel between a water segregator (7) and a water collector (11); the water collector (11) is provided with a pipeline connected to one end of the heat exchange flat
pipe (1); the other end of the heat exchange flat
pipe (1) is connected with a
circulating pump (6) through the pipeline and then connected to the water segregator (7); and a
constant pressure tank (5) is connected to an inlet of the
circulating pump (6). The device can control aerodynamic
noise of the pressure regulating valve of the natural
gas pipeline to be within a state-specified standard, is large in
noise reduction, alleviates the problem of ice blockage, is obvious in cold energy utilization effect, does not affect flow rate, is simple and convenient to install, and is low in cost.