Mobile CNG refilling Unit



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2024-10-21 Mobile CNG refilling Unit

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The integrated compressor of the CNG substation consists of a discharge column, gas filter, compressor, oil-gas cooling system, gas storage bottles, and gas dispenser, all of which are integrated into a rainproof and noise-reducing enclosure through valves and piping. The compressor features a hydraulic reciprocating double-acting structure design and is equipped with a piston position sensing system. A motor drives a hydraulic oil pump to supply oil, and an integrated reversing system continuously pushes the hydraulic oil to drive the piston in a reciprocating motion to compress natural gas.

The compressor employs a two-stage compression method, and the unit is cooled using a water circulation air cooling system.The compressor is controlled by a PLC control cabinet, enabling fully automated operation with high levels of automation, simple operation, safe and reliable performance, and convenient maintenance. The entire unit is skid-mounted and operates in a completely unmanned mode.

The control system's main function is to continuously monitor and control the operating status and parameters of the CNG substation system, recording and generating alarm information to ensure the entire CNG substation system remains in a controllable, safe, reliable, and stable operational state. The system features automatic alarms and emergency handling procedures, effectively monitoring the state and operational parameters of the gas compressor. The production processes are automated, allowing for data storage and historical data tracing.

The control system is centered around a Programmable Logic Controller (PLC), which manages the substation compressor's operations, scheduling, centralized control, monitoring functions, automated logic control, emergency state control, data alarms, and online modification of control parameters. It also generates fault alarm reports, and through a human-machine interface, real-time monitoring of the CNG substation system's status is available.

The CNG dispenser is the equipment used for trade settlement at refueling stations. Its computer control section employs high-performance industrial microprocessor chips, maintaining high stability even in harsh working environments. A high-precision mass flow meter serves as the core metering component, with a built-in temperature sensor for temperature compensation, ensuring accurate measurements. The electrical components are designed with explosion-proof structures to adapt to the explosive environment of the refueling station, ensuring safety and reliability.

This project features a standalone skid for the gas storage cylinder group, which integrates a storage cylinder group consisting of 63 cylinders with a water capacity of 11.97 m³. The 63 cylinders are divided into three sections, each comprising 21 cylinders. The low, medium, and high-pressure storage cylinders are arranged in a ratio of 1:1:1.



Mobile CNG refilling Unit


Mobile CNG refilling Unit


Mobile CNG refilling Unit




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