Mobile Refueling Unit – MRU
- All-in-one-skid: Compressor, Gas storage, Discharge post, Dispenser and PLC control.
- 2 Stage, hydraulic, oil-free compressor: Extended compression cylinder (+5% gas volume) and a vector VFD oil pump cut power consumption ~20%.
- Full range type: 800 / 1,200 / 1,600 / 2,400 Nm³/h, single- or dual-engine layouts to match any mid-size NGV fleet.
- Silenced cabinet design: ≤70 dB(A) suitable for residence zone.
- Container-grade: A standard 20ft container footprint travels by road or sea, deploy in 72 hours, easy for moving.
描述
The SinoCleansky CNG MRU (Mobile Refueling Unit) is a skid-mounted CNG substation solution specifically designed for areas without pipelines.
The unit integrates a hydraulically driven compressor, gas storage cylinders, dispenser, unloading columns, an explosion-proof PLC control cabinet, and soundproof enclosures into a 20GP skid frame. When paired with the SinoCleansky CNG tube trailer (Jumbo Tube Trailer), it forms a complete “virtual pipeline” refueling chain.
Powered by hydraulic drive, oil-free lubrication, and fully automatic PLC control, the system incorporates core technologies such as vector frequency conversion, complete separation of oil and gas, and vector plunger pumps, offering significant advantages in energy efficiency, gas loss reduction, noise suppression, and maintenance.
- Recover “wasted” trailer gas: trailers arrive at 3~25 MPa; the substation compressor re-pressurizes to 25 MPa, lifting gas utilization by over 30%.
- Handles any inlet state: 3.0–25.0 MPa inlet range, auto-matched by vector VFD — no manual adjustment needed.
- Refuels faster: the 2~3 m³ medium-/high-pressure tiered cascade pairs with three-line supply to double instantaneous fill speed, more storage optional.
- Full flow rate: 800Nm³/h, 1200Nm³/h, 1600Nm³/h,2400Nm³/h.
Key systems
| Equipment (Unit) | 功能 |
| Hydraulic compressor | Hydraulic drive, two-stage compression, oil-free lubrication; dual-stage sealing ensures complete isolation of oil and gas; the cylinder is lengthened by 420 mm, resulting in a 5% increase in gas volume. |
| Gas storage cascade | Capacity: 2 – 3 m³, ISO 11439 standard seamless steel cylinder; sequential control for high/medium pressure, shortens switching time, zero waiting for refilling |
| Dispenser | Dual guns, dual meters, remote control, touchscreen operation |
| Discharge post (unloading unit) | Two hoses connect the CNG cylinder truck for safe gas discharge |
| PLC explosion-proof control cabinet | Centralized automation, interlock protection, remote monitoring and communication; TCP/IP network control, anti-interference |
| Power unit | Explosion-proof motor, variable frequency speed regulation, independent forced cooling, soft start to limit impact current |
| Silenced cabinet | ≤70 dB (A) Low noise; H-shaped steel with rainproof function, multi-layer sound insulation, seamless exhaust; four-sided access doors. |
Typical Application
- Rapid construction of CNG refueling stations in non-pipeline areas
- Urban/township natural gas vehicle (NGV) refueling substations
- Refueling for internal vehicles in industrial parks, logistics parks, and mining areas
- Sites near residential areas (low-noise design)
- Temporary/emergency refueling needs with flexible relocation and reuse
- CNG mother station-substation virtual pipeline gas supply system
Tailor-made Offer: Jumbo Trailer + MRU = A transport + fueling solution
- Power system: If there is no power supply available on site, a gas generator can be used as an energy source.
- Gas storage system: If more energy storage capacity is needed, the Jumbo cascade can be added.
- Mobile chassis: If flexible gas supply movement is required, the MRU mobile chassis can be selected.
Details for reference:
技术规格
Key specification:
| 项目 | SCS-CNG-MRU800 | SCS-CNG-MRU1200 | SCS-CNG-MRU1600 | SCS-CNG-MRU2400 |
| Flow rate | 800Nm³/h | 1200Nm³/h | 1600Nm³/h | 2400Nm³/h |
| 中 | CNG | CNG | CNG | CNG |
| Frame | Skid | Skid | Skid | Skid |
| Dimension LxWxH(mm) | 5500*2100*2450 | 5500*2100*2450 | 5500*2100*2450 | 5500*2100*2450 |
| Equipment Weight(kg) | 4000 | 4500 | 5000 | 5500 |
| Working pressure(MPa) | 25 | 25 | 25 | 25 |
| Compressor model | SCS-CNG800-S | SCS-CNG1200-S | SCS-CNG1600-D | SCS-CNG2400-D |
| Compressor Stage | 2 | 2 | 2 | 2 |
| Rated power | 37kw | 45kw | 37kw*2 | 45kw*2 |
| Noise | ≤70dB(A) | ≤70dB(A) | ≤70dB(A) | ≤70dB(A) |
| Gas Storage Cascade | 3m³ | 3m³ | 2.24m³ | 2.24m³ |
| PLC Controller | 1 | 1 | 1 | 1 |
| Discharge Post | 1 | 1 | 1 | 1 |
| Dispenser (Dual Guns) | 2 | 2 | 2 | 2 |
| Silenced Cabinet | 1 | 1 | 1 | 1 |
包装与运输
It is recommended to use 20-foot open-top containers.
- Fixing and Protection: The bottom of the lever body is equipped with lifting/fixed holes. Before shipping, it needs to be firmly fixed to the bottom plate of the container using straps or brackets; external devices such as gas filling machines and gas discharge columns need to be packed in separate wooden boxes and fixed
- Rainproof and Moistureproof: The equipment has undergone rainproof treatment before leaving the factory. For shipping, it is recommended to wrap additional waterproof films and place desiccants inside the container.
- Hydraulic Oil: The hydraulic system was filled with oil at the factory. Before transportation, make sure all valves are closed and there is no leakage; for low-temperature routes, confirm that the hydraulic oil grade is compatible.
- Static Sound Box Top Plate: If the top plate needs to be removed due to the height limit inside the container, it should be packaged separately and labeled. After arrival, reinstall it.
- On-site checking: After the equipment arrives, check the appearance, fasteners, and instruments to ensure they are in good condition. Position, connect. Before power on, guidance should be completed by SinoCleansky’s engineer.
| Packaging | 1 × 20ft ISO standard dry cargo container 6058 × 2438 × 2591 mm (20′ × 8′ × 8’6″) |
| Net weight | 4,000 – 5,500 kg (SCS-CNG-MRU800/1200/1600/2400) |
| Shipping weight | Around 6.5 – 8.0 t |
| Package volume | Around 33 m³ (20ft GP capacity) |
| Securing | The corner bolts of the skid-mounted equipment are locked to the bottom plate of the container; the angle pieces comply with the lifting requirements of ISO 1161. |
| Transport | Maritime (main mode) / Land transportation (flatbed/lowbed trailers) / Railway transportation (standard railway containers) |
| Standards | The overall size and weight comply with the international standards of GB/T 1413 / ISO 668. |
| Cargo status | Empty, not inflated, shipped as ordinary industrial products (sprayed with anti-rust coating, suitable for maritime conditions with salt spray and humidity) |
报告与认证
The containers are with Product Inspection Certificate, General Assembly drawing, tank container Flow Chart Scheme, User manual, Strength calculation certificate and etc. The third-party Certificate could be provided under customers’ requirement. Email us to get details: [email protected].
常见问题解答
A conventional station requires on-site civil works, scattered equipment installation and a 6–12 month commissioning period.
An MRU (Mobile Refueling Unit) integrates all equipment — compressor, storage, dispensing, control and discharge — onto a 20ft/40ft container-sized skid that is pre-assembled and tested at the factory and operational within 72 hours on site. It can also be disassembled and redeployed elsewhere, making it ideal for temporary, emergency or pipeline-free locations.
The hydraulic drive, the mainstream choice for daughter stations, beats mechanical compressors on five fronts:
① 50% lower energy use: approx. 0.03 kWh/Nm³ vs. 0.064 kWh/Nm³;
② Zero inlet gas waste: leakage 90 dB, so it can be sited near residential areas;
④ Maintenance-free operation: only piston rings and O-rings — no valve plates or connecting rods;
⑤ About 10% lower total investment: a slightly higher unit price, but fewer auxiliaries and a longer service life.
One limitation: hydraulic drives are designed for daughter stations (inlet pressure above 3 MPa), not mother or standard stations.
The hydraulic design keeps maintenance to a minimum:
· Daily: confirm pressure, temperature, oil level and gas-leak alarms;
· Monthly: clean filters, check oil level, review PLC alarm logs;
· Quarterly: inspect oil/gas seals and O-rings;
· Yearly: oil sample analysis, valve calibration and safety-valve testing.
All consumables are standard parts — piston rings, O-rings, seals and filter cartridges — readily available on the market, with no dependency on the OEM.
The MRU is a modular integrated design, with a production cycle of 30 to 60 days. After being delivered by sea, on-site only the basic positioning, gas source connection, power supply connection and communication debugging need to be completed. Usually, it can be put into operation within a few days, which is much faster than traditional civil construction gas stations. The specific delivery period depends on the customized requirements of the model and the sea transportation voyage. You can contact the sales team for confirmation.
Sure. The MRU can be disassembled on-site and then reassembled and transported either in a 20ft open-top container or by truck for sea or land transportation. After moving to the next location, reassemble and activate it under the guidance of SinoCleansky engineers.
The MRU itself integrates compression, gas storage, gas filling and control systems. Once connected and powered on, it can start operating. On the gas source side, it needs to be combined with a CNG tube trailer for gas supply. That is, “the tube trailer unloads gas → the MRU compresses and stores the gas → the refueling machine refills the vehicle with gas” – a complete chain. SinoCleansky can provide an overall solution including both the tube trailer and the MRU.
