With the advent of the natural gas era, the demand for natural gas from various urban users is increasing. While vigorously developing the urban gas pipe network, local gas companies are also considering the construction of LNG storage and gasification stations to ensure gas supply in accidents and peak regulation. In this paper, the LNG filling equipment manufacturer takes the LNG cylinder group gasification station as an example to briefly introduce the matters needing attention in the operation of gas supply scheme.

Notes for use

① The whole process system should be replaced by inelastic gas for the first time.

② The frosting on the surface of the air temperature gasifier should be cleaned regularly to improve the heat exchange performance. When cleaning, attention should be paid to the low temperature of equipment to prevent personal injury accidents caused by low temperature.

(3) the metering device in the start, setting, maintenance, testing, etc., the opening of the import and export valve must be very slow, slightly open some first, the pressure before and after the pipeline slowly rise, and then further open after stability, until fully open. Otherwise, the pressure gauge may be damaged and other adverse consequences.

(4) The pressure gauge is easily damaged by inflating to the pipeline in the process of starting. The root valve of the pressure gauge should be closed as far as possible when the pressure is inflated, and the valve should be slowly opened after the pressure is stable at the end of the inflation. If it is necessary to observe the pressure gauge when it is inflated, the valve at the root of the pressure gauge should be opened slightly, so that the gas enters the pressure gauge slowly, and then the valve is fully opened after the pressure is stable.

The safety valve root valve should be kept normally open to ensure that the safety valve can be normally dispersed. The bypass valve of the safety valve should generally be kept closed and can only be opened when it is manually released.

The second conclusion

(1) In the design of LNG cylinder group gasification station, the number of cylinders should be reasonably set according to the gas consumption provided by the construction unit, the distance between the gasification station and the storage and distribution station, the traffic conditions and other factors to ensure timely decanting.

② For the selection of equipment in the skid block, such as electric natural gas heater, flow meter, etc., the actual situation should be considered to avoid waste.

(3) In the maintenance of the station area, the release and pressure of the safety release valve should be checked regularly, and the sealing condition of the equipment and the insulation layer of the equipment should be checked regularly.

(4) Although LNG cylinder group gasification station has certain advantages, it is only a transitional gas source before the construction of urban natural gas pipeline network, so it is not suitable for large-scale construction.

The above are the points for attention in the operation of the gas supply scheme summarized by the LNG filling equipment manufacturer. Hope to help you, if you have other questions, please feel free to consult us.