Natural Gas Compressor from China Factory - Reliable Suppliers for Safe and Efficient Energy Solutions
Natural Gas Diaphragm Compressor Advantages
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01 Absolutely Oil-Free & Zero Leakage, Ensuring Gas Quality and SafetyThe metal diaphragm of the diaphragm compressor completely physically isolates the process gas from the hydraulic oil system, achieving 100% oil-free lubrication in the compression chamber. This ensures that the compressed natural gas is not contaminated by lubricating oil, meeting the extremely high purity requirements for applications such as automotive CNG and electronic-grade feedstock gas. At the same time, its static seal structure fundamentally eliminates the risk of external leakage of the process gas, which is crucial for preventing the accumulation of flammable gas in the plant and eliminating explosion hazards.
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02 Compact Structure, Suitable for High-Pressure & Small-Flow Precision ApplicationsThe diaphragm compressor has a high single-stage compression ratio and a compact structure, making it particularly suitable for applications such as natural gas satellite filling stations, experimental research, and specialty gas filling, where natural gas needs to be compressed to relatively high pressures but with relatively small flow rates. Its smooth piston reciprocating motion drives the diaphragm through hydraulic oil, resulting in a gentle gas compression process with minimal pulsation, which is friendly to downstream process equipment.
Key Design Points for Natural Gas Diaphragm Compressors
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01 Explosion-Proof Electrical System & Material CompatibilityAll electrical equipment, including the drive motor, control cabinet, sensors, and junction boxes, must adopt an explosion-proof type complying with Ex d IIB T4 or higher. Given that natural gas may contain trace corrosive components such as hydrogen sulfide, wetted parts are typically made of corrosion-resistant materials like 316L stainless steel and undergo strict degreasing, cleaning, and passivation treatment to extend equipment life and prevent leakage caused by material corrosion.
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02 Multi-Layer Diaphragm Safety Monitoring & Over-Temperature ProtectionA three-layer diaphragm structure is adopted, equipped with a diaphragm rupture alarm device. When any outer diaphragm ruptures, the pressure change in the middle layer triggers a sensor alarm and an interlock shutdown, preventing gas and oil from mixing or leaking. Simultaneously, a high-high discharge temperature alarm and shutdown interlock must be set to ensure the discharge temperature remains far below the auto-ignition temperature of natural gas, typically set no higher than 120–135°C.
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03 Integrated Safety Skid DesignFor applications such as filling stations, the compressor is often designed as an integrated skid-mounted unit. A natural gas concentration sensor must be installed within the skid, interlocked with the emergency ventilation system. The process piping system must include a safety valve (with a relief capacity greater than the compressor's maximum flow rate), an inlet filter/separator, and a nitrogen purge connection for pre-startup purging, ensuring the entire process from start-up to operation to shutdown is safe and controllable.
Certificate
Model Selection
ModelG70Z/G95Z/G110Z/G130Z
Piston Stroke70mm~130mm
Maximum Piston Force10KN~30KN
Maximum Discharge Pressure70Mpa
Flow Range1~500Nm³/h
Motor Power2.2KW~30KW
Crankshaft Speed420rpm
Cooling MethodWater Cooled/Air Cooled
ModelG70V/G95V/G130V
Piston Stroke70mm~130mm
Maximum Piston Force10KN~30KN
Maximum Discharge Pressure50Mpa
Flow Range1~200Nm³/h
Motor Power2.2KW~30KW
Crankshaft Speed420rpm
Cooling MethodWater Cooled/Air Cooled
ModelG110L/G130L
Piston Stroke110mm~130mm
Maximum Piston Force20KN~40KN
Maximum Discharge Pressure100Mpa
Flow Range10~1000Nm³/h
Motor Power7.5KW~90KW
Crankshaft Speed420rpm
Cooling MethodWater Cooled/Air Cooled
ModelG110D/G130D/G150D/G180D/G182D/G210D
Piston Stroke110mm~210mm
Maximum Piston Force20KN~160KN
Maximum Discharge Pressure100Mpa
Flow Range30~2000Nm³/h
Motor Power22KW~200KW
Crankshaft Speed420rpm
Cooling MethodWater Cooled/Air Cooled
G
Diaphragm type compressor
Z
Piston stroke 70mm
15
Flow(Nm3/h)
10
Inlet pressure(barg)
30
Outlet pressure(barg)
| No. | Model | Cooling water | Flow | Inlet pressure | Outlet pressure | Dimensions L×W×H | Weight | Motor Power |
|---|---|---|---|---|---|---|---|---|
| (L/h) | (Nm³/h) | (MPa) | (MPa) | (≈mm) | (≈kg) | (kW) | ||
| 1 | GZ-15/10-30 | 500 | 15 | 1 | 3 | 1200×800×1100 | 800 | 5.5 |
| 2 | GZ-25/9-31 | 500 | 25 | 0.9 | 3.1 | 1200×800×1100 | 800 | 7.5 |
| 3 | GZ-100/2-7 | 1000 | 100 | 0.2 | 0.7 | 2600×1800×1700 | 2600 | 15 |
| 4 | GV-8/7-235 | 1000 | 8 | 0.7 | 23.5 | 1400×900×1100 | 1000 | 11 |
| 5 | GV-10/7-250 | 1000 | 10 | 0.7 | 25 | 1400×900×1100 | 1000 | 11 |
| 6 | GV-23/4-250 | 2000 | 23 | 0.4 | 25 | 2600×1800×1600 | 3000 | 18.5 |
| 7 | GL-20/12-160 | 1000 | 20 | 1.2 | 16 | 2200×1800×1300 | 3000 | 7.5 |
| 8 | GL-70/5-35 | 1500 | 70 | 0.5 | 3.5 | 2000×1800×1200 | 3000 | 15 |
| 9 | GL-60/0.05-4 | 4000 | 60 | 0.005 | 0.4 | 2400×1800×1600 | 3000 | 15 |
| 10 | GD-220/12-90 | 4000 | 220 | 1.2 | 9 | 3000×2000×1800 | 4000 | 37 |
| 11 | GD-130/8-300 | 6500 | 130 | 0.8 | 35 | 3500×2300×1800 | 4500 | 45 |
| 12 | GD-500/20-250 | 9000 | 500 | 2 | 25 | 3800×2300×2000 | 100000 | 75 |
The equipment size and weight are for reference only, and the final design shall prevail.
CASE STUDY
Frequently Asked Questions (FAQ)
A diaphragm compressor uses a flexible metal diaphragm to physically isolate the process gas chamber from the hydraulic oil system. Because there is no contact between the natural gas and the lubricating hydraulic oil, the compression remains 100% oil-free, preventing any oil contamination.
The compressor features a three-layer diaphragm structure. If any layer ruptures, the pressure changes within the middle layer and triggers a sensor alarm to shut down the unit immediately. This prevents the natural gas from mixing with hydraulic oil or leaking into the atmosphere.
All electrical components, including the motors, sensors, and control systems, comply with Ex d IIB T4 (or higher) explosion-proof standards. This ensures safe operation in hazardous environments where flammable natural gases are processed.
Yes. For gases containing corrosive components like hydrogen sulfide, all wetted parts are made of high-quality, corrosion-resistant materials such as 316L stainless steel, which undergo specialized cleaning and passivation treatment.
Depending on your application environment and thermal requirements, these compressors can be configured with either water-cooled or air-cooled systems to maintain safe operating temperatures.
The integrated skid design includes gas concentration sensors linked to emergency ventilation, safety valves capable of managing maximum flow rates, inlet filter separators, and nitrogen purge connections.