Small-chassis-removable LNG loading pry

Abstract

The invention relates to a small-chassis-removable LNG loading pry. A loading machine, an explosion-proof electrical cabinet, a supercharger, an EAG heater, an explosion-proof air compressor, a pump sump, an immersed pump, a vacuum pipeline system, a compressed air pipeline system, a loading machine electric system and a pneumatic electromagnetic valve are fixed to a small chassis. The loading machine electric system and the loading machine form a loading system. A liquid inlet of the supercharger is sealingly communicated with a liquid phase opening of a tank car, a liquid phase opening of a storage tank and a liquid outlet of the immersed pump respectively, and a liquid outlet of the supercharger is sealingly communicated with a gaseous phase opening of the storage tank and a gaseous phase opening of the tank car respectively, so as to form a supercharging system. An inlet of the EAG heater is connected with relief openings of all safety valves, so as to form a relief heating system. The explosion-proof air compressor is sealingly communicated with a compressed air main-pipeline of a pry body, so as to form the compressed air pipeline system. The immersed pump is put into the pump sump, so as to form a power system of the loading pry. First and second low-temperature quick action emergency valves, a low-temperature stop valve, a low-temperature check valve and a vacuum line form the vacuum pipeline system of the pry body.

Description

technical field [0001] The invention belongs to the technical field of LNG filling skids, in particular to a mobile LNG filling skid with a small chassis. Background technique [0002] At present, with the promotion of the application of LNG filling skids, some insurmountable problems have appeared in use. One is that the LNG filling skids break down during use, which is difficult to rescue and the impact time is longer; The supercharging is slow, which affects the unloading speed and the LNG margin; the third is the phenomenon that the self-pressurized unloading storage tank is pressurized faster. Contents of the invention [0003] The purpose of the present invention is to provide a mobile LNG filling skid with a small chassis that is easy to move, which solves the problems of difficult rescue and long impact time when heavy trucks using LNG as fuel are in use. When moving and unloading, the pressurization speed of the tank car is fast, which fully realizes the energy-s...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a mobile LNG filling skid with a small chassis that is easy to move, which solves the problems of difficult rescue and long impact time when heavy trucks using LNG as fuel are in use. When moving and unloading, the pressurization speed of the tanker is fast, which fully realizes the energy-saving LNG filling skid for self-pressurization unloading

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