Main functions and features

The Hydrogen refueling machine is a gas filling equipment used for metering and settlement in hydrogen refueling stations. It integrates a flow control unit, pressure control unit, metering unit, and automatic control unit. Its primary functions include controlling the hydrogen refueling pressure, flow, and temperature, as well as managing the first-stage refueling process. It mainly includes high-pressure pipelines, valves, hydrogenation guns, measurement, pricing display and other systems.

Hydrogen machine fills fuel cell vehicles with 35MPa high-pressure hydrogen

The main process parameters are as follows:
Working pressure: 43.8 MPa;
Design pressure: 48.2 MPa;
Design flow: 0.1-7.2kg/min;
Measurement accuracy: ±2.5%
Ambient temperature: -40～55 ℃;
Hydrogen pipe material: SS 316L;
Valves use Swagelok, Maximator and other brands;
Adopts double ferrule and NPT thread connection form;
Filling interface: TK25/TK16;
Adopts box structure with high-brightness digital display;
Use Coriolis mass flow meter for measurement;
Equipped with 4-meter high-pressure hose and pull-off valve;

Hydrogen Fueling Station for FCEV

High-precision filters are set up in the high, middle and low channels respectively, with filtration accuracy ≤5μm;

Highlights of hydrogenation machine

The whole machine is explosion-proof and has obtained national explosion-proof certification; Exde ia Ga ib mb ⅡC T4 Gb.
The electronic control system is explosion-proof and has obtained national-level explosion-proof certification Exd[ib] IICT4 Gb.
The hydrogen refueling machine adopts a rainproof and dustproof design, reaching protection level IP55.
The hydrogenation machine is equipped with an imported HIP brand flow regulating valve and features fully automatic flow control.
It supports Sinopec card machine linkage and provides test reports.
It has data transmission functionality and commits to opening communication interfaces and protocols to facilitate user system integration.
It follows the SAE J2601 specification, holds an invention patent, and is safeguarded by an automatic filling program. When the filling reaches the set pressure of 35MPa, it automatically stops to ensure intrinsic safety.
The entire filling process of the equipment is automatically controlled and operated with a single click.
Equipped with hydrogen leakage detection, alarm, and power-off functions.
The hydrogenation machine casing is standardized to meet the installation requirements of various configurations, including dual metering, single metering, double gun, and single gun models.
The hydrogenation process sequence control, gas filling, metering, etc., of the three-line air intake model are all automatically controlled by the hydrogen refueling machine, eliminating interruptions in gas filling caused by communication failures in the station control PLC system.

process flow

1. Hydrogen Entry into the Dispenser: Hydrogen enters the dispenser through the intake pipeline from the gas source interface, marking the start of the entire process.

2. Filtration and Metering: The hydrogen then passes through a gas filter and a mass flow meter to ensure its purity and accurate measurement.

3. Regulation and Heat Exchange: The hydrogen undergoes further regulation and preheating (optional) via a flow regulation device and a heat exchanger, enhancing its efficiency.

4. Filling the Hydrogen Storage Cylinder: After the above treatments, the hydrogen is finally filled into the hydrogen storage cylinder through the hydrogen hose and dispenser nozzle, completing the entire refueling process.

During this process, the dispenser's control system plays a crucial role. It automatically manages the refueling process and communicates in real-time with the hydrogen station's control system and hydrogen communication interface, ensuring the safety and efficiency of the refueling process.