Introduce

Compressed natural gas (below 22Mpa) enters the first stage heat exchanger through filters, ball valves, and emergency shut-off valves. The gas is heated inside the first stage heat exchanger and then adjusted to 0.7-1.2MPa through the first stage pressure regulator. It is then reduced to 0.2-0.4MPa through the second stage heat exchanger and pressure regulator (if the outlet pressure is required to be lower, a third stage pressure reduction is required). The flow rate is calculated through the flow meter, and the natural gas is subjected to odorization treatment before leaving the station. The pressure, temperature, and emergency shut-off valves at all levels inside the pressure reducing station are interlocked with the central control system.