Introduction
1. Applicable medium: Compressed Natural Gas (CNG)
2. Flow range: 1kg/min~30kg/min
3. Maximum working pressure: 25MPa
4. Rated working pressure: 20MPa
5. Maximum allowable error: ± 1.0%
6. Measurement repeatability accuracy: 1/2 of the maximum allowable error
7. Explosion proof grade: ExdeibmbIIAT3Gb
8. Working environment: Temperature: -25 ° C~55 ° C,Humidity: ≤ 95% RH
9. Power supply: 220VAC150Hz±1Hz
10. Power consumption: ≤ 120W
11. Instrument air: 5.6~8.4 BAR clean air
12. Power outage display: The display will remain displayed for no less than 15 minutes after the power outage
13. Gas filling hose length: 4m~6m
14. Pull off valve: When the working pressure is 20MPa, the separation tension is
400N-600N
15. Dimensions: 900 (length) x 550 (width) x 2080 (height) mm
16. Single counting range: 0~9999.99Nm³, kg
17. Cumulative counting range: 0-99999999.99Nm³, kg
Operating principle
The operation of CNG dispensers can be compared to the intelligent pressure balancing and transportation from high-pressure gas cylinders to vehicle gas cylinders.
Its core is graded pressure regulation and sequential filling, ensuring safe and rapid filling of high-pressure natural gas (CNG) into vehicle storage tanks.
- Gas intake: Take gas directly from the station's gas storage cylinder group (usually at a pressure of 25MPa) or compressor.
- Control and Measurement: Gas flows through pressure regulating valves, flow meters, and safety valves, and is monitored in real-time by a computer control system for pressure and flow.
- Sequential filling (key):Prioritize using low-pressure gas cylinders to fill vehicles with gas.As the pressure rises, it automatically switches to medium and high-pressure gas storage cylinders to achieve efficient filling.
- Completion and settlement: Automatically stops when the target pressure (usually 20MPa) or amount is reached, displaying the amount of gas added and the amount.
Core strengths
Mature technology and high reliability
CNG technology has been applied for decades, and the core components of gas dispensers (flow meters, valves, control systems) are stable, durable, with low failure rates and relatively low maintenance costs.
01
Fast refueling speed, experience close to a gasoline car
It takes about 3-5 minutes to fill up a sedan and 8-15 minutes to fill up a bus at once, which is equivalent to the traditional refueling time and highly accepted by drivers.
02
Significant cost advantage
Construction cost: lower than LNG refueling stations (without the need for low-temperature storage tanks or complex insulation systems).
Fuel cost: CNG prices are usually 30% -50% lower than gasoline/diesel, with outstanding fuel efficiency.
03
Environmental Protection and Policy Support
Emissions are much lower than those of gasoline vehicles, meeting urban environmental protection requirements.
Many regions have policies such as tax reductions and operational subsidies for CNG vehicles.
04
Security is guaranteed
The system is designed with multiple safety interlocks (automatic overpressure cut-off, leakage alarm, emergency shutdown).
Room temperature storage, no low temperature risk, high public awareness and acceptance.
05
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