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Natural gas compression station
Date:2020-07-17  Browse:103

I. Overview


A natural gas pressurizing station in North China Oilfield originally used an imported control system, which has been in operation for more than ten years, and various strange faults often occur. Repairing equipment takes a long time, spare parts are expensive, and the cost is high. The leader decided to transform the control equipment, using domestic high-quality control equipment. The control system of natural gas pressurization equipment must be a long-term, stable, reliable, accurate, and responsive control equipment. After examination and testing, they selected the domestic high-quality Kinco PLC for transformation.




2. Process brief


The natural gas pressurization station mainly pressurizes the 0.12Mpa natural gas in the natural gas pipeline to the 20Mpa pressure in the gas storage. Among them, various pressures must be detected. If the measured data is abnormal, an alarm will be issued and the corresponding equipment will be stopped.




Three, hardware configuration


Need to control the pressurizing motor and various valves. Need to measure various signals. Need to set various parameters.


The hardware configuration is as follows:


PLC part:


One Kinco-K306-24AR


Kinco-K331-04IV two sets


Text screen: one MD204L




Four, software programming


The PLC program includes several parts such as manual part, automatic part and alarm. After the equipment is started, the lubrication valve is opened first for lubrication, and the host can be started after 6 seconds. Need to measure 8 kinds of pressures: intake, first, second, third, fourth, high pressure gas storage, medium pressure gas storage, low pressure gas storage. Alarms are compared with the measured values according to the set parameters to get various alarms.




Five, concluding remarks


After several years of development, Kinco PLC has been used to control isolated small devices from the beginning to now used to control important large devices. The quality, stability and reliability of Kinco PLC have been recognized by everyone, and the brand of Kinco PLC has gradually been accepted by everyone.


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