High-Efficiency 500kg/12h Liquid Hydrogen Compressors for Industrial Use

Product Description

 Liquid-Driven Hydrogen Compressors

Product Description

Hydrogen Compressor Skid
The hydrogen compressor skid is a fully integrated and self-contained system. Once connected to the gas source, cooling system, and power supply, it is ready for operation. The main components of the hydrogen compressor skid system include:

1. Steel Structural Skid Frame
   Includes the chassis, equipment supports within the skid, instrument brackets, explosion-proof electrical and instrumentation junction boxes, skid-mounted fixing components, and grounding assemblies.

2. Hydrogen Compressor Piping and Instrumentation
   This includes the upstream and downstream straight pipe sections, filters, the liquid-driven hydrogen compressor with its hydraulic drive system, inlet and outlet piping with necessary instrumentation, as well as pressure and temperature transmitters configured for the compressor.

   Valves within the skid include:

   (1) Shut-off valves, ball valves, safety valves, and discharge valves on the upstream/downstream of the booster lines;                              (2) Cooling system valves and piping within the skid, including shut-off valves, flow meters, etc.;                                                                  (3) All other valves associated with auxiliary systems necessary for fulfilling system functions.

3. Connection Components to Owner's Pipeline
   Includes pipe sections, flanges, and matching flanges for connection with the user's system, along with all internal skid piping and related accessories.

4. Instrumentation
   Pressure and temperature instruments installed within the skid according to functional and regulatory requirements.

5. Safety and Monitoring Devices
   Includes flame detectors, hydrogen concentration detectors, exhaust fans, and other equipment as required to achieve the specified safety functions and to comply with relevant standards.

6. Electrical Control System
   A complete electrical control system dedicated to the operation and control of the entire skid.

Composiiton

The outer shell of the skid is made of steel that meets the strength requirements. The surface of the skid is spray-painted to prevent rust and corrosion, and to provide sun and rain protection. The appearance of the skid can be adjusted according to the customer's appearance requirements.




 

The core part of the hydrogen compressor skid is the hydrogen compressor, which mainly includes power Hydraulic drive system and hydrogen boosting / preurization system, as shown in the figure 

The hydraulic system mainly consists of a motor, oil pump, oil tank, reversing valve group, oil cooler, rack, instruments and meters. As shown:

The hydrogen booster system mainly includes a frame, hydraulic cylinder, cylinder, intake pipe, exhaust pipe, purge pipe, The schematic diagram of the hydrogen boosting system is shown in the figure.  As shown:


 

Our Advantages

The product is driven by an explosion-proof motor in the hydraulic drive system, which drives the hydraulic oil pump to actuate the piston in the hydrogen pressurization system, compressing the hydrogen gas.
The hydrogen pressurization system adopts single-stage compression. The pressurization system integrates a cooling system and has a compact structure.

A. Product Highlights-Oil isolation technology

Compared with the oil-isolating sealing structure of competitors, the LexFlow brand's unique cylinder seal + isolation chamber oil-isolating structure implements double isolation and protection of oil. The oil film part of the piston rod is isolated from the cylinder, which prevents oil from entering the cylinder and contaminating the medium at the molecular level. Build a "pollution-free" hydrogen refueling station.

B. High-efficiency spiral liquid cooling technology      - calmly cope with various working conditions
The compressor cylinder adopts a 360-degree spiral cooling structure with no dead ends. The heat transfer efficiency is improved through structural optimization and the cooling capacity of the cooling medium is fully utilized. The exhaust temperature is 10°C lower than the exhaust temperature of conventional structures.

Product Features

Advantages of Liquid-Driven Hydrogen Compressors Compared to Traditional Technologies:

1. Low Operating Speed and Minimal Vibration
   The equipment runs at a lower speed, resulting in reduced mechanical vibration and enhanced operational stability.

2. Multiple Safety Protection Mechanisms
   Equipped with various protective devices, the system ensures higher operational safety.

3. Proven and Rational Structural Design
   The compressor features a time-tested and well-engineered structure, ensuring reliability and ease of integration.

4. Adjustable Discharge Flow for Energy Efficiency
   Discharge volume can be adjusted to optimize energy use and reduce environmental impact.

5. Versatile Functionality
   A single unit supports multiple operations such as vehicle refueling and cylinder decanting, meeting diverse user requirements.

6. Simple Maintenance and Low Total Cost of Ownership
   Maintenance is straightforward, contributing to a lower overall operating cost.

7. Frequent Start-Stop Capability
   The compressor is well-suited for real-world conditions requiring frequent on/off cycles.

8. Oil-Free Lubrication for Enhanced Safety and Reliability
   The absence of lubricating oil reduces contamination risk and improves system reliability.

9. Long Service Life of Piston Seals with Zero Contamination Risk
   Piston seals are durable and designed to eliminate the risk of hydrogen contamination.

Product Parameters

Item	Specification
Name	Hydrogen Compressor Skid
Medium	Hydrogen
Power	55 kW
Operating Ambient Temperature	-15°C ~ +40°C (customizable)
Operating Altitude	≤1000 m (customizable)
Rated Displacement	470 Nm³/h (500 kg/12h)
Maximum Working Pressure	45 MPa
Inlet Pressure Range	5 MPa ~ 20 MPa
Rated Inlet Pressure	12.5 MPa
Inlet Temperature Range	-20°C ~ +45°C
Rated Inlet Temperature	20°C
Exhaust Temperature	≤45°C
Noise Level	≤85 dB (at 1 m distance)
Explosion-Proof Marking	Ex d e mb IIC T4 Gb
Hydraulic Oil Type	L-HM46
Cooling Capacity Required	≥60 kW
Hydraulic Oil Volume Required	400 L
Inlet Water Temperature	30°C
Outlet Water Temperature	35°C
Skid Weight	8.5 ~ 12 tons
Skid Grounding	User-supplied, connected; resistance < 10 Ω
Installation Method	Anchored via bottom bolts

Flow Rate Curve at 45 MPa Discharge Pressure with Varying Inlet Pressure for  500 kg/12 h hydrogen compressor skid

Flow Rate Curve at 45 MPa Discharge Pressure with Varying Inlet Pressure for  500 kg/12 h hydrogen compressor skid

Working Principal

1. Overview

The liquid-driven hydrogen compressor skid utilizes a hydraulic system to drive a gas booster cylinder, compressing low-pressure hydrogen to the required filling pressure. System operations, including start/stop control and output pressure regulation, are managed by a PLC integrated within the electrical control cabinet. This cabinet is designed to interface with the user's control system, enabling fully automated operation.

 

2. System Components and Functions

2.1 Booster System

The booster system is the core component of the compressor skid and consists of the following elements:

• Gas cylinder

• Hydraulic cylinder

• Isolation chamber

• Purge pipeline

• Hydrogen pipeline

• Oil leakage collection line

Working Principle:
Low-pressure hydrogen enters the booster system, where the hydraulic system drives the hydraulic cylinder in a reciprocating motion. The differential area between the hydraulic and gas cylinders enables compression of the hydrogen to high pressure.

 

2.2 Hydraulic System

The hydraulic system provides the driving force for the booster system. It consists of:

• Oil tank

• Electric motor

• Hydraulic pump

• Valve assembly

• Instrumentation and piping

Function:
The motor drives the hydraulic pump, which generates pressurized hydraulic oil to power the movement of the booster cylinder.

 

2.3 Power Supply

The power supply system provides electrical energy to:

• Main motor of the hydrogen compressor

• Electrical control system

• Solenoid valves

• Automated instrumentation

Purpose:
To ensure reliable startup, operation, and control of the compressor skid.

2.4 Nitrogen Source

The nitrogen source supplies gas for pipeline purging and displacement.
Application Scenarios:

• Initial startup of the hydrogen compressor

• Post-maintenance or piping repairs

Requirement:
Nitrogen must first purge the system until the oxygen content is below 0.5%. Only then can hydrogen be introduced and further purged before operation.

 

2.5 Water Cooling Unit

The water cooling system provides thermal management for:

• The booster system

• The hydraulic system

Function:
To maintain safe and stable operation of the compressor components by dissipating heat generated during operation.

 

2.6 Venting System

To prevent high-pressure hydrogen vent gas from backflowing into low-pressure lines, the compressor skid is equipped with:

• Independent low-pressure vent lines

• Independent high-pressure vent lines

Design Principle:
Separate venting paths ensure operational safety and avoid cross-contamination between pressure zones.

 

Project References

 

 

Chengdu Andisoon Measurement Co., Ltd. is a leading domestic pioneer in the localization and substitution of Coriolis mass flowmeters in China. With nearly 20 years of deep expertise in flow measurement and control technologies for cryogenic and high-pressure applications, the company has established a robust product portfolio in the natural gas and hydrogen energy sectors. This portfolio includes key components for fueling stations-such as pumps, nozzles, valves, and flowmeters-along with 35/70 MPa mass flowmeters, hydrogen refueling nozzles and valves, 100 MPa hydrogen compressors, liquid hydrogen flowmeters, and CNG/LNG/hydrogen calibration devices.
Andisoon has successfully achieved full independent development and domestic production of core components for clean energy systems, becoming a leading supplier of such components in China. Centered around high-precision mass flowmeters, the company has developed a comprehensive product lineup under its A and S series, covering diameters from DN1 to DN250. These flowmeters feature breakthrough capabilities, enabling ultra-wide temperature range measurements from -253°C to 204°C and pressures up to 100 MPa. They are ideal for applications in hydrogen and natural gas refueling, ammonia synthesis, methanol, oil and gas, chemical processing, refrigeration, pharmaceuticals, healthcare, and food & beverage industries.
The products have earned eight major domestic and international certifications for explosion-proofing, safety, and metrology, including CPA, TS, ATEX, IECEx, SIL2, CCS, and EAC. With an accuracy better than ±0.1%, low vibration noise, and support for bidirectional online measurement, remote data transmission, display, and density measurement, the flowmeters can be installed both vertically and horizontally. They offer long service life and performance comparable to leading international brands. The products boast a 100% domestically manufactured rate and are traceable throughout the entire MES production process. Each unit undergoes rigorous calibration for water flow, cryogenic, high-pressure, and high-temperature conditions, ensuring reliable quality. With over 16 years of large-scale application experience both domestically and internationally, Andisoon products are widely used in CNPC, Sinopec, and China Oil & Gas Pipeline Network Corporation, as well as in industrial gas and chemical raw material process control and trade settlement.

Technology Advantages

a)The optimal vibration mode of flowmeters is determined after the finitement analysis, the structure is improved and the modal in each order is reasonably distributed. Driven by the simple harmonic, each position of the measuring tube will respond. A reasonable damped structure has been designed to improve the noise-proof feature.
b)The  high-performance   32/40-bit  DSPs  are  used   as  the   core  processor,   including  high efficiency  instruction  set,  hardware  FFT  and  other peripherals  specially  used  for  audio  signal processing to fast process various digital signals in real time and largely improve the stability of flowmeters.

c)The mass flowmeter is welded by the unique vacuum brass solder process, which ensures the welding quality and also fully guarantees the stress removal to largely improve the zero stability of mass flowmeter in use.

 

FAQ

1. Customer: What is the delivery date?
Andisoon: Our stock is based on GB/DIN flange, with a delivery date of 10 days. We also accommodate other flanges like ANSI/JIS or thread connection, with a delivery date of 15 days.

2. Customer: Can you design according to my requirements?
Andisoon: Yes, we offer OEM service and can tailor products to your specifications.

3. Customer: What is the warranty period?
Andisoon: The quality guarantee period is 12 months from the completion of installation and commissioning by the purchaser, or 14 months from the date of delivery (whichever comes first), excluding maintenance kits or small accessories.