Gasifying station with submersible pump

Abstract

The invention belongs to the technical field of natural gas industry gasifying stations, in particular to a gasifying station with a submersible pump. The gasifying station with the submersible pump comprises a tank car, a storage tank, an air temperature gasifier and a pressure regulating metering and odorization sledge. The pressure of the tank car and the storage tank is balanced through an unloading pressurizing sledge, so that the pressure in the tank car is increased, and LNG is transported to the storage tank for storage. The storage tank is provided with a storage tank booster, and when the storage gas is discharged, the pressure is increased through the storage tank booster of the storage tank, so that the pressure of the storage tank is increased. A liquid phase outlet valve of the storage tank is opened, and the LNG in the storage tank is sent to the air temperature gasifier through the pressure difference and is sent to a municipal gas pipe network or a gas boiler through the pressure regulating metering and odorization sledge, and the submersible pump is added between the storage tank and the air temperature gasifier. The submersible pump is controlled by a frequency converter. The demand of the working pressure of a back end user more than 0.8MPa can be met, and the changing requirements of gas consumption can also be met.

Description

technical field [0001] The invention belongs to the technical field of gasification stations in the natural gas industry, and in particular relates to a gasification station with a submersible pump. Background technique [0002] LNG gasification stations can be divided into single-point direct supply gasification stations and LNG satellite stations according to different supply objects, which are used to receive, store and gasify LNG purchased upstream to supply gas to the local area. [0003] The process flow of the LNG gasification station is generally as follows: LNG is transported from the tank car to the gasification station. After the pressure of the tank car is balanced with the pressure of the storage tank, the pressure inside the tank car is increased, and the LNG in the tank car is sent to the LNG storage tank for storage. When discharging from the LNG storage tank, the pressure of the storage tank is increased through the self-pressurization system of the storage ...

AI Technical Summary

Problems solved by technology

[0004] The existing gasification station process technology can only meet the needs of back-end users with a working pressure of P≤0.8MPa, but cannot meet the needs of natural gas with a working pressure of P>0.8MPa.

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