The pressure regulating and metering skid is a skid-type gas pressure regulating and metering device. air inlet, air outlet manifold, sewage discharge pipe and safety air release valve, which is characterized in that the air inlet manifold, the air outlet manifold and the adjustment manifold are arranged in parallel on the rectangular skid, and are parallel to the rectangular skid. The manifold is in the front, the outlet manifold is in the middle, and the intake manifold is in the rear. Two parallel measuring tubes are horizontally arranged between the two ends of the intake manifold and the regulating tube, and each measuring tube is sequentially provided with a control Valves, filters, pressure gauges, flow meters and control valves; two parallel regulating pipes are arranged horizontally between the air outlet manifold and the middle of the regulating manifold, and control valves, pressure gauges, Regulating valve and control valve; an air outlet pipe with a 90° elbow is arranged in the upper and middle part of the air outlet manifold, and an air inlet is arranged on the middle and side of the air inlet manifold; air valve.
When the pressure regulating and metering skid leaves the factory, the outlet working pressure of the auxiliary circuit regulator is set to 0.10 times the outlet working pressure of the main circuit pressure regulator, and the starting pressure of the auxiliary circuit cut-off valve is set higher than that of the main circuit cut-off valve.
1. When the outlet working pressure of the regulator is less than or equal to 3KPa, the starting pressure of the auxiliary circuit cut-off valve is 1.1 times the starting pressure of the main circuit cut-off valve, and is not greater than 4.5KPa.
2. When 0.003 MPa< working pressure at the outlet of the regulator ≤ 0.2 MPa, the starting pressure of the auxiliary circuit cut-off valve is 1.1 times the starting pressure of the main circuit cut-off valve.
3. When 0.2 MPa< working pressure at the outlet of the pressure regulator ≤ 0.25Mpa, the starting pressure of the auxiliary circuit cut-off valve is 1.05 times the pressure of the main circuit cut-off valve.
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