Built-in pump structure of liquefied natural gas mobile filling vehicle

Abstract

The invention discloses a tank internally-arranged pump structure of a liquefied natural gas mobile filling vehicle, and belongs to the technical field of liquefied natural gas mobile filling vehicles. The tank internally-arranged pump structure comprises a pump body structure body and a pump pool; one end of the pump pool is closed, the other end of the pump pool and a tank are welded, a pump pool jacket layer and a tank jacket layer are communicated to be closed, and the interior of the pump pool and the interior of the tank are communicated; and the pump body structure body comprises a pump and a fixing device, and the pump is mounted inside the pump pool through the fixing device. The tank internally-arranged pump structure is simple and compact in structure, leaked and radiated heat is small, the static evaporation rate is small, the equipment low-temperature performance can be better ensured, and the structure is safe, reliable, convenient to use, high in work efficiency and small in occupied space.

Description

technical field [0001] The invention relates to the technical field of liquefied natural gas mobile filling vehicles. Background technique [0002] The practicability and safety of LNG (liquefied natural gas) mobile refueling vehicles have attracted more and more attention. At present, LNG mobile refueling vehicles all use external pumps, the pump pool and the tank body are separated in two structures, and the pump pool and the tank body need to be connected through a connecting device. The disadvantage of this structure is that the structure is bloated and takes up a lot of space. Large curb weight, less LNG filling (the overall quality is constant, and the quality of the equipment is large, resulting in a relative reduction in the filling of LNG), and the static evaporation rate is high. [0003] Therefore, how to provide a structure with a simple and compact structure, a small footprint, less heat leakage, a small static evaporation rate, a better guarantee of low-temper...

AI Technical Summary

Problems solved by technology

At present, LNG mobile refueling vehicles all use external pumps, the pump pool and the tank body are separated in two structures, and the pump pool and the tank body need to be connected through a connecting device. The disadvantage of this structure is that the structure is bloated and takes up a lot of space. Large curb weight, less LNG filling (the overall quality is constant, and the quality of equipment is large, resulting in a relative reduction in the filling of LNG), high static evaporation rate

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