Pump skid device of low-temperature tank car loading and unloading vehicle

Abstract

The invention discloses a pump skid device of a low-temperature tank car loading and unloading vehicle, and relates to the technical field of LNG loading and unloading vehicles. The pump skid device comprises an unloading supercharger, an unloading pump, an instrument valve, an in-skid pipeline system and a loading and unloading vehicle arm. The in-skid pipeline system comprises an unloading liquid phase pipeline, a loading liquid phase pipeline, a gas phase pipeline, an emptying pipeline, a pressurizing pipeline, a nitrogen pipeline and an instrument air pipeline; and the gas phase pipeline is provided with a gas-phase pipeline and a gas-phase intermodulation pipeline, wherein the gas-phase intermodulation pipeline is used for communicating the gas-phase pipelines on the plurality of skiddevices. According to the pump skid device, during unloading, the unloading pump is used for increasing the flow speed of media in the unloading liquid phase pipeline, the unloading supercharger gasifies the media, pressure is transmitted to the top in a tank car tank through the gas phase pipeline so as to increase the unloading speed, and the unloading time is greatly shortened; and besides, the loading function or the unloading function is selectively started through controlling an isolation valve, the loading function and the unloading function are integrated into one skid, the requirement of a user for dual purposes of loading and unloading is met, and the cost of the user is reduced.

Description

technical field [0001] The invention relates to the technical field of LNG loading and unloading vehicles, in particular to a low-temperature tank truck loading and unloading pump skid device. Background technique [0002] At present, clean and efficient LNG energy has been widely used, and with the rapid development of the LNG industry and the rapid promotion of LNG applications, LNG tankers are usually used for transshipment, and LNG liquefaction plants or LNG storage stations have simple The unloading function cannot meet the unloading of a large number of LNG tankers and due to the large demand of the LNG industry, the simple unloading of LNG liquefaction plants or LNG storage stations cannot achieve a higher gasification level and greater supply capacity, so LNG liquefaction plants or storage stations are required It is inevitable to have the function of LNG unloading or a device for unloading. [0003] LNG unloading skid is an important equipment to complete the unloa...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problem that the simple self-pressurized unloading speed in the prior art is relatively slow

Images