Air Compressor Skid

1. Fixed hydrogen refueling station: equipped with unloading, boosting, storage, and cooling modules, it can achieve remote refueling, critical equipment status monitoring, cloud computing, and big data analysis, with fast refueling speed and high refueling rate
2. Skid mounted hydrogen refueling station: It integrates hydrogenation, cooling, metering, and digital control, and equipment manufacturing, testing, debugging, and other processes are completed in the factory. The station construction is convenient, flexible, efficient, and has a short cycle

3.Fixed/skid-mounted hydrogen refueling stations: Customizable integration according to customer needs, supporting diaphragm or liquid driven compressors

1. Liquid driven compressor

■ For the compressor, the oil cylinder is separated from the gas cylinder, of which the oil-free lubrication is used for the piston, preventing the compressed medium from being contaminated during the compression process. Multi-seal is used for the gas and oil chambers in a special form of oil-gas isolation chambers to completely separate oil and gas. This structure of oil-gas isolation chambers ensures that hydrogen will not be exposed to oil even in case of any damage to the sealing ring, which further maintains the gas purity at the outlet. No lubrication system is needed for this compressor without components such as crankshafts and connecting rods.

■ Hydraulic piston compressors have a low linear speed and switching frequency. In contrast to other types of reciprocating compressors, hydraulic piston compressors have extremely low reciprocating frequency and piston linear speed, ensuring prolonged service life the sealing and valves.

■ The gas cylinder piston of the compressor is driven by a hydraulic system with less vibrations and low noise, in which the motor drives the high-pressure oil pump and then the compression cylinder under stable loading and operating conditions, extending the service life of the compression cylinder and motor.

Powerful displacement: The excellent performance of this compressor is reflected in its powerful displacement, reaching 1000Nm³/H@12.5MPa provides sufficient power support for the hydrogenation process.
High pressure output: The exhaust pressure can reach up to 45MPa, making it excellent in high-pressure processes such as hydrogenation, ensuring efficient and stable operation of the production process.
Wide range adaptability: The inlet pressure range is wide, from 2MPa to 20MPa, which can be applied to different working conditions and has excellent flexibility.
Excellent temperature control: The maximum exhaust temperature does not exceed 120 ℃, and after cooling, the exhaust temperature is even lower than 40 ℃, effectively ensuring the stability of the equipment during long-term operation.

Equipment reliability

• Long sealing life: The equipment adopts advanced sealing technology to ensure a sealing life of over 2000 hours, greatly reducing maintenance frequency and production downtime, and improving the overall reliability of the equipment.
• Efficient motor drive: The main motor power is 110kW, providing strong driving force for equipment, ensuring efficient and stable operation, and reducing energy consumption costs.
• Low noise design: The equipment noise is controlled below 80dB (A), taking into account the high sensitivity of modern industrial environments to noise, ensuring a safe working environment for operators.

2. Compressor skids

Module-based design: Modules are separated for the hydraulic system, compression system, heat exchange system, and pipeline system in the structure for easy operation and maintenance.

Safety and reliability: The electrical components within skids are explosion-proof with a reliable electrostatic grounding system. Full-lift safety valves are used to prevent the equipment from overpressure. A gas detector is inserted in the skids which are connected to the ESD system of the compressor to automatically shut down and cut off the gas inlet in an emergency.

Highly automatic design: The PLC fully automatic control system is adopted for the control of the compressor. The control panel can show and check the operating status of the compressor with alarm and automatic diagnosis features. One-click start, fault warning/diagnosis and other features are available.

Full water-cooling system: It supports more efficient heat exchange, lower exhaust temperature, and lower operating temperature.

The explosion-proof certification has been attained for the entire equipment as required by the regulations of the region where the user is located.

3. Hydrogen dispenser

Fully automatic control: one-click operation available for hydrogen refueling with leakage detection, alarm and shutdown features. When it comes to the set pressure of 35 MPa/70 MPa during refueling, it stops automatically to maintain safety at the underlying level.

Wide flow range: The flow range of the hydrogen dispenser is 0-5.0 kg/min, which can meet the demand for hydrogen refueling in different applications from small-scale in laboratories to large-scale use in industrial cases.

High-precision measurement: The measurement fault of only ±1.5% and the measurement repeatability of up to 0.5% ensure the accurate measurement and pricing of hydrogen refueling.

Safety and explosion-proof design: The explosion-proof level of the equipment is certified as Ex d e ib mb llC T4Gb, which ensures that the equipment can run in a safe and stable environment as a trustworthy safety guarantee for the refueling process.

4. Sequence control panel

Module-based design: The overall pipeline structure is module-based, which is easy for staff to repair and maintain.

Efficient program control design: Automatic refueling/storage are available with multiple nozzles to refuel the hydrogen-fueled vehicles at the same time.

Safe and reliable design: The hydrogen pipes are connected by Autoclave fittings (C&T fittings) or NPT fittings. Electrical components meet the explosion-proof requirements.

Adaptable to various conditions: The sequence control panel can work well under various environmental conditions, of which the operating temperature ranges from -40°C to 50°C, making it adaptable to various operating conditions.

5. Discharging column

Sophisticated pipeline design: The entire pipeline is arranged following a clear flow process made up of primary and secondary sections. The primary section (for hydrogen) and secondary section (for nitrogen purging used in the replacement reactions) are easy to identify, which can effectively improve the accuracy and safety of operations and reduce misoperation.

Safe and reliable design: The gas for instruments and purging are isolated. Full-lift safety valves are used. The pipeline is designed with an automatic leak detection feature.

Precise measurement repeatability: The measurement repeatability of the discharging column is 0.5%. Precise measurement control ensures accurate and stable discharging.

High filtration precision: High-efficiency filters of 5μm can remove other impurities from hydrogen and improve the purity of hydrogen.

The hydrogen compressor is the core equipment of the hydrogen refueling station, taking up 30% of the total cost of the station, which is to compress medium-pressure and low-pressure hydrogen of 3~20 MPa to the high-pressure hydrogen of 35/70 MPa required by vehicles.

The hydraulic oil drives the pistons of the cylinders on both sides to reciprocate, enabling the suction, compression and exhaust of hydrogen in the cylinders to pressurize the low-pressure hydrogen to high-pressure hydrogen.

The system consists of four sections: hydrogen pipeline, hydraulic compressor, cooler and electrical units. The low-pressure hydrogen of 3 MPa is pressurized to medium-pressure hydrogen of 15 MPa by the first-stage hydraulic compressor, and then flows into the cooler and buffer tank, which is further pressurized to high-pressure hydrogen of 45 MPa by the second-stage hydraulic compressor. The high-pressure hydrogen will be stored in the storage cylinders or refueling the vehicles after cooling down.

Customers worldwide are welcome to explore our products for the best solutions and services.

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