Liquefied natural gas (LNG) emergency mobile filling device

Abstract

The invention discloses a liquefied natural gas (LNG) emergency mobile filling device. The liquefied natural gas (LNG) emergency mobile filling device is skid-mounted equipment mainly composed of vehicle-mounted LNG cylinders; and comprises the vehicle-mounted LNG cylinders, a self-operated pressure reducing valve, a filling valve, a liquid adding flexible metal pipe and a liquid adding gun, an air-returning flexible metal pipe and an air-returning gun, an EAG heater, a flame arrester, a safety valve, other accessories, and the like. The size of the LNG emergency mobile filling device is small, so that the LNG emergency mobile filling device can be transported to any places, where filling of LNG is required, by a light pickup truck, and is used for LNG filling for LNG vehicles; and during the process of LNG filling, no external power sources or other power sources are required by the skid equipment, movement is convenient, and response for scheduling can be realized at any time. The LNG emergency mobile filling device is capable of providing rapid and safe LNG filling when it is impossible to start a LNG vehicle with an empty LNG vehicle-mounted cylinder, and it is also impossible to transport the LNG vehicle to a LNG filling station for LNG filling, wherein long-term inoperation or other reasons would lead to the empty LNG vehicle-mounted cylinder. The LNG emergency mobile filling device is capable of providing a best emergency solution plan which is flexible, convenient, safe, reliable, cheap and economical.

Description

technical field [0001] The invention relates to an emergency mobile filling device (LNG: liquefied natural gas, the same below) for filling LNG vehicles with LNG fuel. Background technique [0002] LNG fueled vehicle is a new energy vehicle, because of its clean and environmentally friendly, long mileage, short refueling time (compared to compressed natural gas) and other advantages, it has been widely promoted and used in recent years. LNG is a low-temperature liquefied natural gas with a temperature of -162.5°C under normal pressure. LNG fuel vehicles will run out of LNG fuel and break down due to reasons such as long-term parking without use or route changes, and continuous gasification and degassing due to heat leakage of LNG cylinders. At this time, LNG fuel needs to be transported to the location of the LNG vehicle, and LNG can be added to the LNG vehicle on site to start the LNG vehicle. At present, the mobile filling vehicles for LNG vehicles are mainly tank trucks...

AI Technical Summary

Problems solved by technology

Therefore, there are at least the following problems in the mobile refueling vehicles currently in use: 1. The equipment is large, generally more than 5 square meters, and it cannot be used so much in one emergency, resulting in waste of product gas and operating costs; 2. Large investment, less than one set of equipment 3. The site situation is complex, there is no power supply, and the pumps, filling machines and other devices installed in the existing equipment have a large power load, generally not less than 15KW, in most cases Unable to work with electricity, limited by many conditions

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