Independent liquefied natural gas supply device

Abstract

The invention discloses an independent liquefied natural gas supply device, which comprises a storage tank, wherein the bottom of the storage tank is provided with an outlet; the outlet is connected with a gas supply pipeline; the gas supply pipeline is provided with a carburetor and a metering control system in sequence along the flow direction of natural gas; the storage tank is provided with an inlet and an exhaust opening; the inlet is connected with a liquid charging pipeline system; the exhaust opening is connected with a pressure release pipeline system; the storage tank is connected with a liquid level pressure detection system; the liquid level pressure detection system comprises an upper pipeline which is arranged at the top end of the storage tank and is provided with a needle valve, and a lower pipeline which is communicated with the bottom of the storage tank and is provided with a needle valve; a liquid level meter and a differential pressure transmitter are communicated between the upper pipeline and the lower pipeline; the upper pipeline is connected with a pressure gauge and a pressure transmitter; and the upper pipeline and the lower pipeline are provided with a GPS (Global Positioning System) pressure signal output port and a GPS liquid level signal output port for transmitting the pressure parameter and the liquid level parameter of the storage tank. The independent liquefied natural gas supply device has high safety performance, is easy to operate, and does not require continuous manual field monitoring.

Description

technical field [0001] The invention relates to a gas supply device, in particular to an independent gas supply device for liquefied natural gas. Background technique [0002] At present, as an efficient and clean fuel, liquefied natural gas (LNG) has been used in daily life to replace coal gas and other fuels and has formed a large-scale industry. However, the liquefied natural gas (LNG) gas supply system is currently only limited to the construction of gas filling stations, which is costly and has great limitations in use. For small-scale gas consumption, such as small residential areas that are far away from cities and pipeline networks and cannot establish LNG gasification stations or do not need to establish LNG gasification stations, they cannot be used. There are also some gas supply systems that use large storage tanks to store natural gas (LNG) for utilization, but these systems have low safety factors and high construction costs. Monitoring operation is very inco...

AI Technical Summary

Problems solved by technology

However, the liquefied natural gas (LNG) gas supply system is currently only limited to the construction of gas filling stations, which is costly and has great limitations in use.

For small-scale gas consumption, such as small residential areas that are far away from cities and pipeline networks and cannot establish LNG gasification stations or do not need to establish LNG gasification stations, they cannot be used.

There are also some gas supply systems that use large storage tanks to store natural gas (LNG) for utilization, but these systems have low safety factors and high construction costs. Monitoring operation, practical application is very inconvenient

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