Hydrogen Refueling Equipment

 

To develop the customized equipment package for fixed/skid-mounted hydrogen refueling stations according to different needs of customers.

1.Fixed hydrogen refueling station: Equipped with unloading, pressurization, storage and cooling units for remote dispensing, monitoring of key equipment status, cloud computing and big data analysis with higher efficiency and utilization rate.

2.Skid-mounted hydrogen refueling station: Integrating hydrogen refueling, cooling, metering, and digital control. With the equipment manufacturing, testing, commissioning and other processes completed in the factory, it is easy and efficient to build the station in a short period.

3.Fixed/skid-mounted hydrogen refueling stations: Available for customization and assembly according to customers'needs, and compatible with diaphragm or liquid-driven compressors.

 

 

1.Hydraulic 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.

 

Large displacement: The outstanding performance of this compressor is represented by its large displacement of up to 1000 Nm³/h@12.5 MPa, which serves as sufficient power support for the hydrogen refueling process.

High-pressure output: The exhaust pressure is up to 45 MPa, which allows it to stand out in high-pressure procedures such as hydrogen refueling, ensuring efficient and stable operation of the production process.

Adaptable to a wide range: The inlet pressure range is wide from 2 MPa to 20 MPa, which can be applied to different operating conditions, which allows it to operate flexibly.

Excellent temperature control: The maximum exhaust temperature is not higher than 120°C, which can be as low as 40°C after cooling, effectively ensuring the stability of the equipment during long-term operation.

Reliability

• Durable sealing life: For the equipment, the advanced sealing technology is adopted to ensure its sealing life is more than 2000 hours, which greatly reduces the maintenance frequency and production downtime, and improves the reliability of the entire equipment.
• High-efficiency motor drive: The capacity of the main motor is 110 kW, which provides powerful driving force for the equipment, ensuring efficient and stable operation and reducing the costs of energy consumption.
• Low-noise design: The noise of this equipment is controlled below 80 dB(A), which takes into account the high sensitivity of modern industrial environment to noise, ensuring a better operating environment for operators.

 

Name	Displacement	Exhaust pressure	Inlet pressure	Maximum exhaust temperature	Exhaust temperature (aftercooling)	Service life of seals	Main motor power	Noise
Parameter	≥1000Nm³/h@12.5MPa	45MPa	2~20MPa	≤120℃	≤40℃	≥2000h	110kW	≤80dB(A)

 

2. Compressor Skid

• 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.

 

Indicator	Exhaust pressure	Default Dispensing Capacity	Operating Temperature
Parameter	45MPa	1000Kg/day	-25-55℃

 

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.

Name	Flow range	Measurement error	Measurement repeatability	Operating pressure	Explosion-proof grade
Parameter	0~5.0Kg/min	±1.5%	0.50%	35MPa/70 MPa	ExdemibllCT4Gb

 

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.

Name	Applicable medium	Operating pressure	Design pressure	Environment temperature	Rating
Parameter	H2	45MPa	50MPa	-40°C~50°C	III

 

5. Discharge 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.

Name	Applicable medium	Operating pressure	Design pressure	Measurement repeatability	Filtration accuracy
Parameter	H2	0~20MPa	25MPa	0.50%	5μm

 

 

After-sales Services For Hydrogen Refueling System

On-site and After-sales Services

 

1. Party B guarantees that the equipment and materials (including outsourced kits and materials) shall meet the requirements of related regulations, and maintain good quality and stable, safe and reliable operation, of which the quality shall comply with the performance parameters in the technical specifications and the standard specifications for equipment manufacturing, inspection and acceptance, and conform to relevant quality standards and national standards.

2. This warranty period shall continue for a period of one year from the date of acceptance. During this period, if any malfunction or damage to the system and equipment occurs due to non-human factors, Party B shall repair it free of charge, and faulty parts shall be replaced free of charge.

3. During the warranty period, if the equipment fails, Party B shall respond within 2 hours, and send qualified engineers and technicians or technical staff to the equipment site for inspection and repair within 24 hours.

4. At the engineering design stage, Party A shall be responsible for organizing technical briefings between relevant equipment manufacturers and the design institute, and assisting the design institute in completing the design of equipment construction drawings.

5. At the civil construction stage, Party B shall dispatch engineering and technical staff to the site to facilitate the civil construction guidance and ensure the smooth progress of the project according to the technical requirements and design drawings of the equipment.

6. At the equipment delivery stage, Party B shall dispatch service staff to guide the hoisting and positioning of the equipment, and cooperate with the user in preliminary acceptance.

7. At the equipment installation stage, Party B shall dispatch service staff to the site to provide relevant technical support and communication for installation, including technical briefings with the installation and construction staff, installation requirements for on-site equipment interfaces, equipment installation processes, and electrical instructions.

8. At the completion and acceptance stage: Party B shall draft a debugging plan and work schedule before the end of installation. Party B shall be responsible for the system debugging of the supplied equipment and providing debugging reports and acceptance plans. Debugging includes: no-load debugging, motor load debugging, control system debugging, loading operation debugging, etc.

9. At the guaranteed operation stage: after the completion and acceptance, Party B shall provide customers with free guaranteed operation services for one employee for three months according to project needs to ensure that the operating staff are proficient in operating the supplied products and equipment for the safe and reliable operation of the supplied equipment in the initial period.

10. Party B shall provide free technical training and services no less than 3 times in a total period of no less than 36 hours.

 

Technical Training Program

 

1.Training Objectives

To enhance Party A's management, technical and operation staff's relevant knowledge on the hydrogen refueling stations to help them grasp the safe operation procedures of the hydrogen refueling stations, master the basic functions and inspections of equipment components, understand the emergency operation of the equipment, and conduct daily maintenance and inspections; and to improve the operation and management level of hydrogen refueling stations, further reduce operating costs, improve the service skills and emergency response capability of professional and technical staff, ensuring that the technical staff of the company are able to handle common problems and emergencies, and ultimately maintain the safe operation of the equipment.

2.Scope of Training

After the contract is entered into, Party B shall send technical staff to the installation site of Party A to facilitate the design and construction teams for exchanges about on-site construction and applied technology, and to train the users of the hydrogen refueling stations at Party B's expense.

3.Training Methods

A combination of class lessons and practical operation, including class lessons at the production base and practical operation training at the installation site of the hydrogen refueling station. Party A organizes the training for relevant staff, supplemented by experience exchanges, Q&A sessions, and provides training materials for better effects of teaching.

4.Training Content

The training content involves:

(1) Training on basic knowledge of hydrogen refueling and hydrogen safety knowledge;

(2) Training on the operation, maintenance and troubleshooting of the hydrogen refueling system;

(3) Training on operation procedures, specifications and safety of hydrogen refueling;

(4) Training on the operation of instrument operation system;

 

No.	Training Content	Training Objectives	Participants	Place
1	Basic knowledge	To understand and master knowledge and principles of processes (mechanical, electrical controls, etc.)	Management, maintenance and safety	Client's company
2	Safety operation knowledge	Exchanges on knowledge of and precautions for safe operation.	Management, maintenance and safety	Client's company
3	Equipment package and process	To understand and master the structural components and process flow of the equipment.	Management, maintenance and safety	Client's company
4	Theoretical knowledge of equipment operation	Principles and procedures of equipment operation.	Management, maintenance and safety	Client's company
5	quipment operation experience briefing	1. To understand equipment operation experience; 2. To understand operation and phenomena of equipment; 3. To master preliminary troubleshooting methods. 4. To test the learned knowledge.	Management, maintenance and safety	Client's company
6	Case study of equipment operation and maintenance		Management, maintenance and safety	Client's company
7	Inspection and study of supporting equipment	To understand and learn supporting equipment.	Management, maintenance and safety	On site
8	Equipment operation	To master the operation process and precautions.	Management, maintenance and safety	On site
9	Operation management and maintenance	To get familiar with the contents and points of maintenance.	Maintenance and safety	On site
10	Equipment operation	To get familiar with operation procedures of the equipment.	Maintenance and safety	On site
11	Daily maintenance	To get familiar with the maintenance of possible malfunctions of the equipment.	Maintenance and process	On site
12	Operation management and maintenance	To master equipment emergency response and general troubleshooting maintenance, parts replacement.	Maintenance and safety	On site
13	Replacement of equipment parts		Maintenance and process	On site
14	Customer needs	To exchange knowledge that has been learned.	Maintenance, process, safety	On site
15	Exchanges and enhancement on equipment operation	To consolidate, improve and assess.	Management, maintenance, process and safety	On site

 

Technical Services and Training

1.Technical Services

1.1 Design and Technical Services

1) To cooperate with the designers to complete relevant specific design work.

2) To participate in relevant design reviews and project coordination meetings related to the equipment package organized by the buyer.

 

1.2 On-site Services

1) To cooperate with the designers to complete relevant specific design work.

2) To participate in relevant design reviews and project coordination meetings related to the equipment package organized by the buyer.

3) Responsible for on-site installation guidance of supplied equipment.

4) Responsible for the guidance for the first start-up and commissioning of the equipment package.

5) To solve malfunctions occurring during the production operation on site at the request of the buyer after the equipment is delivered, regularly or irregularly.

6) Responsible for providing comprehensive technical training to the buyer's process technicians and operators, ensuring that their levels meet the needs of normal production and maintenance.

7) Responsible for providing comprehensive technical training to the buyer's equipment maintenance staff.

8) Responsible for contacting the buyer's technical staff for inspection and internship sites.

9) To respond within 24 hours after receiving the buyer's notification requesting technical services, and arrive at the buyer's site 48 hours after receiving the notification requesting on-site services in writing.

10) The seller shall provide technical services free of charge during the warranty period. The warranty period is subject to the provisions of the commercial contract.

11) The seller shall provide the buyer with software upgrade services free of charge during the warranty period.

 

1.3 After-sales Services

1) We shall respond within 24 hours after receiving the notification and guide the solution for either an issue related to equipment quality or operation failure arising from human factors. In case of a significant failure, we shall send personnel to the site immediately.

2) To provide spare parts of the equipment and manufacturers of such spare parts, and assist in model selection and purchase.

3) To provide users with the latest technology development information and newly developed components so that users can understand the current status of hydrogen production technology development.

4) To provide technical maintenance and repair services free of charge during the warranty period. In case of any maintenance and repair caused by improper use by the user, the cost of the damaged parts shall be charged only.

5) To conduct regular maintenance and upkeep of the equipment as required by the user.

 

2.Training

1) The seller shall be responsible for providing technical briefings and technical services to the buyer, and for the installation and debugging of the equipment.

2) During the on-site services, the seller shall be responsible for training the user's technical staff and operators, and ensuring that the trained personnel are proficient in the use and maintenance, common troubleshooting and other operations of the equipment.

3) Schedule of On-site Services

No.	Technical service	Planned person-months	Composition of dispatched personnel
			Professional title	Number of people	Remark
1	To install or guide the installation	20 days	Engineer	2	Until the end of the installation
2	To prepare for commissioning	15 days	Engineer	3
3	To conduct the trial run	7 days	Engineer	2
4	To assess the operation	3 days	Engineer	2

 

4) Schedule of Key Processes for Guidance on Installation and Debugging Provided by the Seller

No.	Process	Main content of process	Remark
1	To guide the installation process
1.1	Electrolyzer	The electrolyzer is ready with connected pipes
1.2	Accessory equipment framework	The framework is ready with connected pipes, cables, etc.
1.3	Transformer	Ready with connected high-voltage cables and copper lines
1.4	Rectifier cabinet	Ready with connected control cables and copper lines
1.5	To connect pipelines	To connect the framework with the water tank and alkali tank, including connected water supply pump and cooling water pipes.
1.6	Electrical parts	The control cabinet and parts of the upper monitor are ready with connected cables.	Buyer
2	Debugging process
2.1	Equipment inspection	To check if there is any error of all process pipelines, nozzle interfaces, etc.
2.2	Air tightness inspection	To fill it with pure water to the normal liquid level and nitrogen to 2.5 Mpa. To keep the pressure for 24 hours and check if the leakage meets the requirements.
2.3	Wiring inspection	To check if the wiring terminals are correct according to the diagram.
2.4	Start-up with dilute alkali	To prepare dilute alkali and fill the electrolyzer with it, paying attention to the liquid level. To start the rectifier cabinet, input low current, and check if the control equipment runs normally. To have the equipment to run for 24 hours with a higher current according to the situation (for the dilute alkali current cannot reach full load)
2.5	To discharge dilute alkali	To discharge all the dilute alkali in the framework from the equipment
2.6	Official start-up	Same as the Step 2.4 above (Note: The alkali concentration shall be higher than before.)

 

5) Services in Use

(1) In case of any quality issues occurring in the use of the contractual equipment package, we shall provide the buyer with fast and high-quality services in a timely manner. During the warranty period, we shall provide maintenance services as soon as possible, and repair or replace defective parts free of charge after being notified by the user, to ensure the normal operation of the equipment.

(2) We shall also provide the following high-quality services:

A Irregular site visiting mechanism.

B Quick response and customer priority mechanism.

c Lifelong technical support mechanism.

d Guaranteed preferential supply mechanism of spare parts.

5) In order to enable the contractual equipment to be installed, debugged, operated, maintained and inspected as scheduled, the seller shall provide the buyer with relevant technical training. The schedule of training shall be in line with the project progress. The seller shall provide the training program and content as follows:

No.	Training content	Planned person-months	Composition of trainers		Place	Remark
			Professional title	Number of people
1	Theory and process of hydrogen production and purification system	5 people/3 days	Engineer	1	Changsha or on site
2	Theory of control and instrumentation for hydrogen production and purification system	5 people/4 days	Engineer	1	Changsha or on site
3	Common faults and troubleshooting methods of hydrogen production and purification systems	5 people/1 day	Engineer	1	Changsha or on site
4	On-site practical training	5 people/7 days	Engineer	2	Changsha or on site

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