Voltage Regulator Cabinet Installation and Use Guide

1. Installation

1. Before installation, confirm the following technical parameters: inlet pressure, outlet pressure, flow rate, medium and gas flow direction.

2. The pressure regulating cabinet (station) should be purged with the pipeline connected to it before installation.

3. Before the pipeline pressure test, blind plates should be installed at the inlet and outlet of the pressure regulating cabinet (station) to prevent damage to the pressure regulating cabinet (station).

4. It is strictly forbidden to use a crowbar to force the installation in place, causing obvious deformation of the pipeline or large internal stress, affecting the sealing effect.

5. The inlet and outlet pipelines should be effectively supported to prevent sinking, and the additional stress of the external pipeline is strictly prohibited from acting on the pressure regulating cabinet (box).

6. After the correct installation is completed, inert gas replacement should be used before it can be put into operation.

2. Use

Avoid opening the valve violently, which can easily cause equipment damage!

Confirm that the inlet and outlet valves of the pressure regulating cabinet (box) are in the closed state.

Slowly open the inlet valve and observe whether the inlet and outlet pressure gauges are within the allowable range.

When the exhaust nozzle on the pipeline after the pressure regulator is opened, the outlet pressure gauge may fluctuate due to the small flow rate. When the outlet valve is opened and the normal flow rate is restored, the fluctuation will disappear automatically. When the inlet and outlet pressures are normal, slowly open the outlet valve and adjust the outlet pressure as needed. 3. Reset operation of the cut-off valve After the cut-off valve or the cut-off device of the pressure regulator is cut off, it is necessary to manually reset the operation. ◆ Before resetting the operation, the cause of the cut-off should be found out, whether it is the pressure shock in the pipeline network or the pressure regulator failure. The cut-off valve reset operation can be performed only after the failure is eliminated. When resetting the cut-off valve, the inlet and outlet valves of the pressure regulating cabinet (station) and the needle valve under the outlet pressure gauge must be closed! Turn the reset handle slowly at the beginning. At this time, a small airflow passes through the pipe and stops immediately, and then turn the handle to the reset buckle. ◆ Slowly open the inlet valve and open the outlet valve after the outlet pressure stabilizes.