LNG station complete equipment

Summary

LNG station can be divided into 2 types: skid-mounted LNG station and stationary LNG station. Skid-mounted LNG station is to integrate storage tank, pump skid, PLC control system and LNG dispenser in one skid, which is convenient to transport the full station. Stationary LNG station is to install storage tank, pump skid, PLC control system and LNG dispenser in the station.           
Main equipment composition: cryogenic storage tank, LNG cryogenic immersed pump, LNG unloading skid, instrument wind  system,  PLC  control  system  etc.  Main  function:  LNG  unloading,  pressure  regulating,  LNG  filling,  metering  etc.  Main           
advantages: modular design, high integration level, convenient and efficient installation.

Main functions

Unloading: unload LNG from tank car to storage tank through self-pressurization and pump.

Refueling: refuel LNG to vehicle cylinder through cryogenic pump and LNG dispenser.           
Pressure boosting: filling partial LNG into LNG storage tank after vaporized to meet tank setting value           
Saturation regulating: pumping partial LNG to vaporizer from storage tank by LNG cryogenic pump, and return to the bottom of storage  tank  after  vaporization,  which  increases  the  temperature  of  LNG  storage  tank  thereby  increase  the  storage  tank pressure.

1.1 Skid-mounted LNG station

Summary

Skid-mounted LNG station is the complete LNG refueling system which assembled, tested and debugged in factory. This kind of system integrates LNG storage tank, LNG immersed pump, PLC control system and LNG dispenser in the skid, which is convenient to transport the full station. It can finish  unloading,  pressure  regulating  and  refueling  independently. It can  be divided into 2 types: skid-mounted LNG station and container LNG station.

Key Parameter

1.2  Stationary LNG station

Summar

Stationary LNG station is the LNG refueling system that is composed of 4 subsystems: LNG storage tank, LNG pump skid, LNG dispenser and PLC control cabinet. Each module finishes assembling, testing and debugging in factory. The station can     be put into trial operation after each module connected, installed and debugged simply at site.           
Key Parameter

LNG immersed pump skid

Air compressor skid

Unloading skid

Control room

1.2.1 LNG Skid-mounted Pump

Summary

LNG pump skid is to integrate LNG cryogenic immersed pump, vacuum pump pool, vaporizer, vacuum pipeline and valves in the skid, which has functions of unloading, pressure regulating and refueling.   Equip with  safety precautions such as combustible gas detection, leakage alarm, emergency cut-off etc. Multiple unload mode: pump unload, self-pressurization unload, combined unload etc.  Multiple functions: storage tank  pressure boost, thermoregulation, instant refuel during unload, dual pump crossed standby application.Pump pool uses high vacuum twine heat insulation, inflow & outflow pipeline use PIR cold insulation mode, which keeps the cold loss to a minimum. Reuse the BOG in storage tank by our particular unloading equal pressure mode.

Advantages

High integration, easy installation, safe and reliable, advanced technological process, cold loss control.

The pipeline layout of LNG immersed pump skid

Thermal insulation of LNG immersed pump skid

1.2.2 LNG dispenser

Summary

Accuracy of measuring reaches ± 1%. Function of pipeline pressure limiting protection, which realizes overpressure protection through safety valve and pressure sensor. Advanced cold insulation technology - insulation treatment for all inner medium circulation pipelines (including mass flow meter), reduce BOG effectively. Repeated operation is unnecessary as liquid filling interval time is short, which will reduce gas filling waiting time. The operation mode single pumpdual dispensers and “ dual pumps four dispensers come true through interconnected control.

Advantages

High accuracy of measuring、High security、Reasonable technological process Good thermal insulation properties, low loss.

Main functions

● Refuel by non-quantitative and preset volume

● Measuring by mass and volume

● Explosive-proof design: intrinsic safety and isolating safety

● Breakaway coupling

● Save data automatically after power cut, display data lingeringly

● Display unit price, volume and sum with high light backlit LCD

● IC card management, auto settlement and favorable unit price

● Bill printer

● Pressure temperature compensation function

● Stop automatically after refueling completed

● Data transmission communication interface

Key Parameter