Product Overview
Skid-Mounted LNG Refueling Device is a compact LNG fueling system integrating a cryogenic pump sump, submerged pump, dispenser, vaporizer, piping, and PLC controls. It transfers and dispenses liquefied natural gas safely and accurately for vehicle refueling at temporary, mobile, or permanent fueling stations.
System Configuration
Cryogenic Pump Sump – Provides a stable low-temperature installation environment for the submerged pump and buffers LNG flow.
Cryogenic Submerged Pump – Pressurizes LNG and delivers it to the dispenser at a stable flow rate.
LNG Dispenser – Measures, controls, and dispenses LNG accurately into vehicle storage tanks with integrated safety functions.
Cryogenic Piping & Valve System – Transfers LNG through vacuum-insulated stainless steel piping with cryogenic valves, check valves, and safety relief valves.
Main Vaporizer – Vaporizes part of the LNG to maintain system pressure or supply gaseous natural gas when required.
Subcooled LNG Vaporizer – Slightly warms LNG before dispensing to reduce thermal shock to vehicle tanks.
Flow Metering System – Provides high-accuracy LNG measurement for commercial fueling transactions.
PLC Control System – Monitors pressure, temperature, flow rate, and equipment status while managing alarms and emergency shutdown.
Safety Protection System – Includes emergency stop, gas leakage monitoring, pressure protection, and interlock functions for safe operation.
Skid Base & Structural Frame – Integrates all equipment into a factory-assembled module for convenient transportation and installation.
Technical Advantages
Factory-assembled skid structure minimizes on-site installation work and shortens project commissioning time.
Cryogenic submerged pump provides stable LNG pressure for fast and consistent vehicle refueling.
PLC automatic control enables real-time monitoring, alarm management, and automatic system protection.
High-accuracy flow metering improves fueling consistency and supports commercial LNG dispensing.
Vacuum-insulated cryogenic piping reduces heat leakage and minimizes LNG boil-off losses.
Integrated safety interlocks help protect personnel and equipment during abnormal operating conditions.
Typical Applications
LNG Truck Refueling Stations
Suitable for fueling heavy-duty LNG-powered trucks with stable dispensing performance.
Bus Depots
Supports scheduled LNG refueling for public transportation fleets.
Mining Operations
Provides on-site LNG fueling for heavy mining vehicles in remote locations.
Logistics Centers
Improves fueling efficiency for commercial transportation fleets.
Temporary Fueling Stations
Factory-integrated skid design enables rapid deployment for short-term projects.
Industrial Vehicle Fuel Supply
Supplies LNG for construction, port, and industrial vehicles operating on natural gas.
Engineering & Customization Options
|
Item |
Available Options |
|
LNG Filling Capacity |
Customized according to vehicle fueling demand |
|
Pump Capacity |
Different flow rates and pressure ratings |
|
LNG Dispenser |
Single-nozzle or dual-nozzle configuration |
|
Flow Meter |
Commercial custody transfer or industrial metering |
|
Control System |
Fully automatic PLC or customized control logic |
|
PLC Brand |
Siemens, Schneider, Mitsubishi, Allen-Bradley, or customer specified |
|
HMI Language |
English, Spanish, Russian, Arabic, French, etc. |
|
Electrical Standard |
220V / 380V / 400V / 415V / 440V / customized frequency |
|
Explosion Protection |
ATEX, IECEx, ANZEx or project-specific requirements |
|
Piping Material |
Stainless steel 304, 304L, or 316L |
|
Insulation Structure |
Vacuum-insulated or cryogenic insulated piping |
|
Vaporizer Type |
Ambient air vaporizer or customized configuration |
|
Communication Interface |
Modbus, Profibus, Ethernet, remote monitoring |
|
Fueling Protocol |
Customized according to vehicle connector standards |
|
Surface Treatment |
Industrial coating system for different climates |
|
Skid Layout |
Customized dimensions for transportation or site limitations |
Quality Control
Incoming raw material inspection (PMI and material certificate verification)
Welding Procedure Qualification Record (PQR/WPS) verification
Welder qualification validation
Dimensional inspection of fabricated skid structure
Cryogenic piping weld visual inspection (VT)
Non-destructive testing (RT/PT/UT as applicable)
Pressure strength test
Helium leak test for cryogenic pipeline system
Instrument calibration and flow meter verification
PLC functional and I/O testing
Emergency shutdown (ESD) function verification
Factory Acceptance Test (FAT) before shipment
Compliance & Industry Standards
ISO 9001
Quality management system for standardized manufacturing and quality control.
ISO 14001
Environmental management system supporting environmentally responsible production.
OIML R117 (OIML 01)
International recommendation for measuring systems handling liquids other than water.
NMI Approval
Measurement certification supporting legal metrology compliance in applicable markets.
ANZEx Certification
Explosion protection certification for hazardous-area electrical equipment in Australia and New Zealand.
ATEX / IECEx (Optional)
Explosion protection standards available when required by project specifications.
FAQ
Q: What project support do you provide?
A: We provide process design support, equipment layout, foundation drawings, electrical documentation, commissioning guidance, operator training, and technical assistance.
Q: How is the equipment shipped?
A: The skid is shipped as one or several modules depending on dimensions. Components are securely packed for container or break-bulk transportation.
Q: What maintenance is required?
A: Routine maintenance includes inspection of cryogenic valves, pump performance, instrumentation, safety devices, PLC alarms, and sealing components according to the maintenance schedule.
Q: What is your minimum order quantity (MOQ)?
A: MOQ is 1 complete skid-mounted LNG refueling device.
Q: Can I order a sample?
A: Complete equipment samples are not available due to system size. Individual components or technical documentation can be provided for evaluation when appropriate.
Q: What payment terms do you accept?
A: Standard terms are 30% T/T deposit and 70% balance before shipment. L/C may be accepted for qualified orders.
Q: Which export documents can you provide?
A: We can supply the Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, Inspection Report, Material Certificates, Operation Manual, FAT Report, and other documents required by the destination market.
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