Distribution metering system

process

Metering system is natural gas long distance pipeline sub transmission station as trade connection of skid mounted measurement system (device), and it is with filtering, metering, gas group analysis, flow of contrast, on-line calibration, venting system, automatic switching and other functions in one. According to different conditions and requirements divids into turbine measurement system, ultrasonic measurement system, quality measurement system, orifice plate metering system, volumetric measurement system, etc. Metering system is composed of the filtration system, measurement system, flow rate ratio system, gas chromatography analysis system, online calibration system, venting system, gas leakage alarm system etc. in general. The flow calculation is carried out by using the straight pipe section which meets the requirements, and the matching flow computer carries out the gas temperature pressure compensation. Flow ratio is about two or more flow meters in series to achieve the purpose, the online calibration system is based on the process requirements, in the system reserved online calibration port. Vent system principle on the vent and gas leak alarm system can be and the main valve and vent system chain, when exposure occurred at the scene, the station control system command the main valve closed, and open the vent system for emergency venting.