Dalian rtz2000.4a gas regulator
The series monitoring mode is to monitor the Fleming gas pressure regulating valve and the working gas pressure regulating valve in series, and monitor the embellish gas pressure regulating valve installed in the upstream of the working gas pressure regulating valve, which is controlled by the outlet pressure of the working tune valve, as shown in Figure 6. According to the different forms of the work of Run Feng gas regulator, the following are separately introduced in detail.
I) self working type work of moistening gas pressure regulating valve
As shown in Figure 6, the working pressure regulator of the voltage regulation system uses a self regulating valve. In normal work, the adjusting pressure system has a main role on the top of the voltage regulation system, the following one is spare, and the setting point of the two voltage regulation road is uniform. Pressure regulating process: after the work road depressurization, the downstream pressure reaches the PVIOIA setting value PI of the moistening gas pressure regulating valve. If the main voltage regulator Pv101A fails, the voltage regulator PCV102A is replaced by the main pressure regulator, and the downstream pressure reaches the pcv]02A set value P2 (P2>Pl) to maintain the downstream gas supply pressure in a safe and reasonable range. . If the monitoring regulator pcv]02A fails and can not control the downstream force, the safe shut-off valve SSVIOIA will shut down itself and cut off the loop gas source, which will lose the voltage regulation effect. At this time, the standby process valve should be opened manually, and the standby way starts to work, and the downstream pressure reaches the working PVIO]B setting value of PI to ensure the safety of continuous gas supply and downstream pipeline, equipment and system.
Tibet AQ gas regulator manufacturers run Feng to provide high quality solutions.
Tibet AQ gas regulator manufacturers run Feng to provide high quality solutions.
2) embellish gas pressure regulating valve of electric ball valve
The overall pressure regulating process of the pressure regulating system in Figure 6 is basically the same. The difference lies in the difference in the selection of the process valve and the working pressure relief valve, which causes some differences in the working principle of the two.
The power regulating valve is set as an electric regulating valve. The advantage of this design is that when the controller receives the flow signal of the flow computer and the supply flow exceeds the set value, the special controller of the pressure control system and the working gas pressure regulating valve switch to the state of the flow control, and the output flow control of the controller is controlled at this time. When the actual gas flow rate is lower than the limit value, the system can automatically switch to the pressure control mode. At the same time, the special controller transfers all kinds of operating parameters to the station control system, such as pressure, valve working state and so on. An electric ball valve is set up for each inlet of the voltage regulating system to facilitate the remote control of each voltage regulation line so as to make the voltage regulation system relatively unmanned. And one way is to adjust the pressure, and the other way is standby. When the main surge path fails, the electric valve at the inlet of the standby road is automatically opened, and the standby road starts to work.
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