Novel LNG (Liquefied Natural Gas) vehicle-mounted gas bottle liner support structure

Abstract

The invention relates to a novel LNG (Liquefied Natural Gas) vehicle-mounted gas bottle liner support structure which is characterized in that a liner of a gas bottle is supported and fixed on a housing of the gas bottle; the support structure mainly consists of a liner end closure, a housing end closure, a manifold header, a support neck tube, an extension tube and a glass reinforced plastic ring; a reinforcing tube is sleeved outside the extension tube; one end of the reinforcing tube is fixedly connected with the inner wall of the liner end closure and the other end is fixedly connected with a second tube cap; and a vacuum cavity is formed between the reinforcing tube and the extension tube through vacuumizing. The novel LNG vehicle-mounted gas bottle liner support structure provided by the invention has few welding seams and is convenient to manufacture, and at the same time heat transfer is reduced and heat leakage amount is greatly reduced.

Description

Technical field [0001] The invention relates to the technical field of a gas cylinder liner and its support structure, in particular to a new type of LNG vehicle-mounted gas cylinder liner support structure. Background technique [0002] LNG is the abbreviation of liquefied natural gas. It is a clean energy recognized in the world today. It has the advantages of high heating value, full combustion, low price, transportation economy and good safety. LNGV is a liquefied natural gas vehicle fueled by liquefied natural gas. The LNG vehicle-mounted gas cylinder is a key part of the LNGV vehicle-mounted fuel system. The LNG vehicle-mounted gas cylinder is mainly composed of an inner tank, an outer shell, an insulating structure, a supporting system, and rigid components. The inner tank is used to contain LNG, and there are injection spray pipes, Liquid level probe, etc. Between the outer shell and the inner tank is a closed vacuum insulation jacket. The jacket adopts high-vacuum multi...

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Problems solved by technology

Chinese patent CN201020214317.2 discloses a support device for a gas cylinder liner for a vehicle, which includes a support heat insulation tube and a fixed support tube. There is an annular groove on the right part of the fixed support tube, and the left end of the support heat insulation tube is fixedly installed in the annular groove. ; Chinese patent CN200510120264.1 discloses a support structure for the liner of a low-temperature heat-insulating gas cylinder, an extension tube (supporting heat-insulating tube), one end of which is connected to the inner head of the liner, and the other end extends into the liner And sealed, although the above two designs have improved the support strength and reduced heat transfer to a certain extent, the results of thermal analysis show that the heat leakage of the support tubes of the two structures is still very large, accounting for about 50% of the total heat leakage of the gas cylinder. Moreover, the structure of the whole device is comparatively complicated. The intercalated liner support structure provided by CN200510120264.1 has too many welds in a short distance, which is not easy to manufacture.

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