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Do you know about pressure reducers？

2025-01-06 | Page View：112

CNG, also known as Compressed Natural Gas, is the most ideal energy source, and its application technology has become increasingly mature after decades of development. It has the characteristics of low cost, high efficiency, no pollution, and safe and convenient use. Widely used in urban gas, transportation, and industrial production fields.

CNG pressure reducing station refers to a place where compressed natural gas (CNG) is used to provide fuel to urban gas pipelines, natural gas vehicles, and large CNG sub station vehicles. Generally, natural gas is first pre purified to remove sulfur and moisture from the gas, and then the pressure is reduced from 25MPa to 0.1MPa~1.0MPa by a regulator to achieve gas transmission function.

Main features: It can achieve "point-to-point" supply, expanding the supply range. Compressed natural gas, as a gas source for small and medium-sized towns, overcomes the limitations of pipeline transportation. It not only increases the supply radius, but also enables scenic spots, islands, large lakes and other areas that are not suitable for pipeline transportation to use natural gas. The supply scale of natural gas is highly elastic and can be easily obtained for daily supply volumes ranging from tens of thousands of cubic meters to hundreds of thousands of cubic meters. As long as there are two or more compressed natural gas supply points, multiple gas sources can be obtained, which can ensure the continuous supply of gas sources. It can be used in the fields of peak shaving and storage in small and medium-sized towns, natural gas vehicles, and industrial gas supply. Second level pressure regulation process: Firstly, high-pressure rubber hoses and quick connectors are used to connect with pry tank trucks, Compressed natural gas enters the first stage heat exchanger through a high-pressure ball valve and a high-pressure cut-off valve, where the gas is heated. It is then depressurized to 1.0MPa-4.0MPa through a first stage pressure regulator and enters a flow meter for flow measurement. Finally, the gas is odorized and input into the medium pressure pipeline network. The control of various levels of gas pressure, temperature, flow rate, water temperature, key valves, and switching between the two channels in the pressure regulating station are all interlocked and controlled by the central console.

The secondary pressure regulating station is suitable for battlefields with a flow rate of 2000Nm3/h and below.
Three stage pressure regulation process: Firstly, high-pressure rubber hoses and quick couplings are used to connect with the pry tank truck. Compressed natural gas enters the first stage heat exchanger through high-pressure ball valves and high-pressure cut-off valves, where it is heated and then depressurized to 3.0MPa-7.5MPa through the first stage pressure regulator. It is then heated and regulated to 1.6MPa-2.5MPa through the second stage heat exchanger and pressure regulator. After three-stage pressure regulation to 0.1MPa-0.4MPa, it enters the flow meter for flow measurement, and finally odorizes the gas before entering the medium pressure pipeline network. The control of various levels of gas pressure, temperature, flow rate, water temperature, key valves, and switching between the two channels in the pressure regulating station are all interlocked and controlled by the central console.
The three-level pressure regulating station is suitable for battlefields with a flow rate of 2000Nm3/h and above. The central console is used for real-time monitoring and control of equipment operation. The pressure regulation process of compressed natural gas is much more complex compared to ordinary pipeline pressure regulation, and it is necessary to use a control panel to monitor the entire pressure regulation process.

What are the standards for selecting CNG pressure reducers
1. The situation where emphasis is placed on both power performance and gas consumption.
2. Have a testing report from a national professional testing institution.
3. Price of pressure reducers and our company's reputation and after-sales service system.
4. Technical data and maintainability of the pressure reducer.
5. Choose an engine model that is suitable for natural gas modification in automobiles, and it is best to have supporting tests to prove it.
6. Adapt to the intended use of oil to gas vehicles and the main operating conditions of the engine.

7. Choose to adapt to the local climate conditions. 8. The lifespan of the pressure reducer and the quality of its components.

Refer to：https://en.wikipedia.org/wiki/Pressure_regulator

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Do you know about pressure reducers？

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