Qingdao Lenado Intelligent Equipment Co., Ltd. is one of the most reliable manufacturers and suppliers of l-cng filling skid in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk customized l-cng filling skid from our factory.
Product Overview
This product is a skid-mounted L-CNG filling skid using Liquefied Natural Gas (LNG) as the working medium. It is designed to convert LNG into CNG for CNG vehicle refueling. The unit adopts PLC + touch screen + soft starter control and supports fully automatic unattended operation, suitable for outdoor installation. It is widely used in CNG filling stations, bus depots, logistics parks, and other scenarios, achieving safe, efficient, and low‑cost natural gas refueling.
Process Flow Description
LNG from the LNG tanker enters the LNG storage tank via the unloading liquid phase line. It is pressurised by a plunger pump and sent to a high‑pressure vaporiser to be converted into high‑pressure CNG. The CNG gas is then distributed through a sequence control panel to the CNG storage cylinder bank or directly to the CNG dispenser for vehicle refueling. A booster vaporiser and a water bath heater are incorporated to safely raise the temperature of the cryogenic medium and prevent ice blockage.
Flow path:
LNG tanker → unloading liquid phase → LNG storage tank → L-CNG pump skid (plunger pump) → high‑pressure vaporiser → sequence control panel → CNG storage cylinders / CNG dispenser → CNG vehicle
Technical Data Sheet
|
Model |
Max. flow rate (L/h) |
High‑pressure vaporiser (Nm³/h) |
Number of plunger pumps |
Motor power (kW) |
Dimensions (mm) |
|
TYL-CNG-1 |
1000 / 1500 / 2500 |
1000 / 1500 / 2500 |
1 |
15 / 22 / 37 |
3200×2200×2200 |
|
TYL-CNG-2 |
1000×2 / 1500×2 / 2500×2 |
1000×2 / 1500×2 / 2500×2 |
2 |
15×2 / 22×2 / 37×2 |
3600×2200×2200 |
Note: TYL-CNG-1 is a single‑pump configuration, TYL-CNG-2 is a dual‑pump configuration. Flow rate and vaporiser capacity scale linearly with the number of pumps.
Key Features
Skid‑mounted integrated design – pre‑assembled in factory, quick on‑site installation, reduced civil work costs.
Fully automatic unattended operation – PLC automatically controls pump start/stop, sequence panel switching, temperature and pressure protection; local monitoring via touch screen.
Soft starter – reduces starting impact of the plunger pump, extending motor and pump life.
Dual‑pump redundancy (TYL-CNG-2) – one duty / one standby or both running simultaneously, improving station reliability and peak flow capacity.
Outdoor installation – high protection rating, suitable for -30°C to +50°C ambient temperature, no dedicated building required.
Complete auxiliary equipment – integrated high‑pressure vaporiser, sequence control panel, and water bath heater.
Model Comparison & Selection Guide
|
Feature |
TYL-CNG-1 |
TYL-CNG-2 |
|
Suitable scale |
Small stations, daily refuelling ≤3,000 Nm³ |
Medium stations, daily refuelling 5,000–10,000 Nm³ |
|
Pump configuration |
Single pump, no redundancy |
Dual pump, can be used as standby for each other |
|
Max. flow rate |
2,500 L/h |
5,000 L/h |
|
Motor power |
15–37 kW |
30–74 kW |
|
Dimensions |
Smaller |
400 mm longer |
|
Typical applications |
Township buses, internal logistics park stations |
Urban CNG stations, oil & gas co‑located stations |
Selection advice:
For daily refuelling below 2,000 Nm³ with limited budget, choose TYL-CNG-1 (1000 or 1500 flow option).
For peak‑hour rapid refuelling or uninterrupted operation, choose the dual‑pump TYL-CNG-2.
Typical Applications
Standard CNG filling stations – core LNG‑to‑CNG conversion module.
LNG & CNG co‑located stations – provides both LNG and CNG refuelling.
Bus depots – overnight refuelling of CNG buses.
Logistics parks / heavy‑truck parking areas – meets demand of heavy‑duty CNG trucks.
Oilfields / mining temporary gas supply – skid design allows easy relocation.
Control & Safety Features
Control system: PLC (Siemens or domestic brand) + 7" touch screen + soft starter.
Monitored parameters: LNG level, pump discharge pressure, post‑vaporiser temperature, sequence panel status, gas leakage alarm.
Safety protection: automatic pump shutdown on overpressure, low‑temperature protection, emergency stop, combustible gas interlock.
Communication: RS485 / Ethernet ready, supports remote monitoring and data upload.
FAQ
Q1: Does the skid require pre‑cooling?
A: Pre‑cooling of the pump is required before first start‑up or after long idle periods (approx. 5–10 minutes). The PLC executes an automatic pre‑cooling program.
Q2: How long does it take from LNG to CNG readiness?
A: Preheating + pre‑cooling + pressurisation to 25 MPa takes about 15–20 minutes (depending on ambient temperature).
Q3: What is the routine maintenance interval?
A: Plunger pump seals should be inspected every 2,000 hours. High‑pressure vaporiser fins should be cleaned once a year. PLC cabinet maintenance once a year.
Q4: Is the skid compatible with different brands of LNG tankers?
A: The unloading liquid phase connection is a standard DN50 flange or quick‑coupling, compatible with most domestic LNG tankers.
Q5: Can an external CNG storage cylinder bank be added?
A: Yes. The skid is provided with reserve ports on the sequence control panel for connecting an external CNG storage cylinder bank of any capacity.
Ordering & Configuration Options
Model range: TYL-CNG-1 (single pump) / TYL-CNG-2 (dual pump)
Flow rate options: 1000 / 1500 / 2500 L/h (single pump) or multiples for dual pump
Motor voltage: 380V/50Hz (480V/60Hz optional)
Vaporiser material: standard 6063 aluminium alloy, optional 316L stainless steel (corrosion resistant)
Heating method: water bath heater (standard electric heating), optional steam or hot water heating
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