Processing technology for inner container of vehicle-mounted LNG cylinder

Abstract

A processing technology for an inner container of a vehicle-mounted LNG cylinder comprises a preheating step, a winding step, a reinforcing step and a sleeving step. The inner container of the gas cylinder is firstly preheated and dried in a drying box, and preheating temperature is 110-130 DEG C; and then the inner container is conveyed out and enters a cold air chamber to be subjected to winding of heat preservation materials, a copper wire is adopted for further reinforcing the outer layer after winding, and during sleeving, a clearance formed by the inner container and an outer barrel is vacuumized, and the vacuum degree of the clearance is guaranteed. The inner container is processed through a four-step method, the drying condition of the inner container of the gas cylinder is fully guaranteed, and vacuumizing of the last step is facilitated. The copper wire is used for reinforcing the heat preservation materials, so that the heat preservation materials are protected, and the heat insulation effect is controllable; and later vacuumizing operation is facilitated better, and labor force and production cost are reduced.

Description

technical field [0001] The invention relates to the field of gas cylinder equipment, in particular to a processing technology for an inner liner of an LNG steam-borne gas cylinder. Background technique [0002] Compressed natural gas cylinders for vehicles are economical, safe and environmentally friendly gas storage equipment for motor vehicles. With the continuous changes in international oil prices, the number of motor vehicles has increased sharply, and people's awareness of environmental protection has gradually increased. It is widely used in fields such as public transportation and automobile transportation. [0003] As a low-temperature heat-insulating pressure vessel, the LNG vehicle-mounted gas cylinder is generally a double-layer vacuum structure. The inner tank is used to store low-temperature liquid liquefied natural gas, and the outer wall is wound with multiple layers of heat-insulating composite layers to make it have super heat insulation performance. At th...

AI Technical Summary

Problems solved by technology

The traditional process is to directly wrap a layer of thermal insulation material on the outer wall of the inner tank. During the assembly process of the inner tank and the outer cylinder, the thermal insulation material wrapped on the inner tank is often easily damaged, which seriously affects the thermal insulation performance of the gas cylinder.

Moreover, during the process of processing the inner tank, the workers sweat drips on the steel of the inner tank, and the moisture and grease in the sweat in the steel will increase the difficulty and time of vacuuming in the later stage. In order to ensure the inner tank and If the vacuum degree of the outer cylinder gap is within the set range, it will take time and effort, and consume a lot of production costs, which is not conducive to the large-scale production of enterprises