Self-pressurization automatic control LNG skid-mounted station

Abstract

The invention relates to a self-pressurization automatic control LNG skid-mounted station and belongs to the technical field of LNG filling. The self-pressurization automatic control LNG skid-mounted station comprises an LNG liquid discharging part, a filling part, an LNG storage tank self-pressurization part and a corresponding control part. The LNG liquid discharging part is composed of a discharged liquid receiving port, a top liquid inlet valve, a bottom liquid inlet valve and a pipeline; the LNG storage tank self-pressurization part achieves self-pressurization through an LNG storage tank and achieves unattended LNG filling service through a pipeline and a valve which are connected by the adoption of automatic control of a PLC; the filling part comprises an electrically operated valve, a pipeline and a flow meter; the control part comprises a PLC system, an electrically operated valve, a liquid level sensor, a pressure sensor and a temperature sensor; electricity is generated through solar energy and / or wind power, and the LNG skid-mounted station does not need a power source. An automobile driver can achieve self-help LNG filling and automatic charging by swiping a card, automobile LNG filling service can be continuously and safely provided for areas without power supplies, and LNG automobiles can be conveniently and widely applied.

Description

technical field [0001] The invention relates to an LNG (liquefied natural gas) skid-mounted filling station, in particular to an LNG skid-mounted station capable of realizing no external power supply, automatic control system pressure, and unattended operation. Background technique [0002] The traditional LNG skid-loading station is pressurized by an imported cryogenic pump connected to the bottom of the LNG storage tank, which requires professionals to provide refueling services; in addition, the cryopump is expensive, consumes a lot of power, and the system process is complicated. The region cannot provide power supply, thus limiting the development of LNG filling stations. In short, the traditional gas filling method cannot realize the automatic and remote control of the LNG skid-mounted station system. Contents of the invention [0003] In order to solve the problems of low automation, difficult pressurization and high energy consumption of the current LNG skid-mount...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low automation, difficult pressurization and high energy consumption of the current LNG skid-mounted station, the present invention provides a self-pressurized and automatically controlled LNG skid-mounted station, the purpose of which is to eliminate the need for externally provided large Power equipment (cryogenic pumps, air compressors, superchargers, etc.), realizing low-power, automatic, and remote-controlled unattended LNG skid loading stations

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