Large ultra-high pressure gas cylinder liner and manufacturing method thereof
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A manufacturing method and technology of compressed gas cylinders, which are applied in the field of high-pressure containers, can solve problems such as poor reliability, heavy quality, and small volume of ultra-high pressure gas cylinders, and achieve the effects of high reliability, low pollution, and strict surface quality control
Active Publication Date: 2020-08-07
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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Problems solved by technology
To at least solve the problems of small volume, overweight and poor reliability of the current ultra-high pressure gas cylinders
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Embodiment 1
[0131] Prepare a super-sized ultra-high-pressure gas cylinder liner with a diameter of 500mm, a length of 10m, and a wall thickness of 6mm with one end back cover 1, and the rated pressure of the high-pressure gas cylinder is required to be 50Mpa, specifically including the following steps:
[0132] S1, with back cover 1 billet overall reverse extrusion molding
[0133] Select an aluminum ingot with a height of 1000mm and a diameter of 520mm as the extrusion billet, first heat the aluminum ingot to be extruded to 300°C, and at the same time, preheat the outer extrusion mold and the inner extrusion rod to 300°C;
[0134] The aluminum ingot is placed in the extrusion die, and the billet is made into a prefabricated tube billet with a back cover 1 through 10 extrusions. During the extrusion process, the die is kept at 280-300°C;
[0135] The outer surface of the prefabricated tube blank is processed by the turning method; the inner surface of the prefabricated tube blank is proce...
Embodiment 2
[0174] Prepare a super-sized ultra-high-pressure gas cylinder liner with a diameter of 780 mm, a length of 12 m, and a wall thickness of 8 mm with one end back cover 1. The rated pressure of the high-pressure gas cylinder is required to be 50 MPa, specifically including the following steps:
[0175] S1, with back cover 1 billet overall reverse extrusion molding
[0176] Select an aluminum ingot with a height of 1200mm and a diameter of 800mm as the extrusion billet, first heat the aluminum ingot to be extruded to 350°C, and at the same time, preheat the extrusion outer mold and the inner extrusion rod to 350°C;
[0177] The aluminum ingot is placed in the extrusion die, and the billet is made into a prefabricated tube billet with a back cover 1 through 10 extrusions. During the extrusion process, the die is kept at 280-300°C;
[0178] The outer surface of the preform is processed by a turning method; the inner surface of the preform is processed by a boring method.
[0179] I...
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Abstract
The invention provides a large-scale ultrahigh-pressure gas cylinder liner and a manufacturing method thereof. The large-scale ultrahigh-pressure gas cylinder liner is characterized in that on end ofthe liner is bottom sealed, and the other end of the liner is formed a sealing head and a bottle opening by closing, and the liner is an integrated seamless structure of a aluminum alloy liner, the liner comprises a straight cylinder section, a sealing bottom and a sealing head, wherein the sealing bottom and the sealing head are located at the two ends of the straight cylinder section respectively, the bottle opening is located on the sealing head; and the length of the aluminum alloy liner is 5-13m, the nominal outside diameter of the straight cylinder section is Phi 300-Phi 500 mm, the nominal pressure of the ultrahigh-pressure gas cylinder is 35-70 Mpa. According to the method, a slab is adopted as a raw material, a spinning method is adopted overall, the product does not have a weld joint, the preparation process is simple, the operation is convenient, the energy consumption is low, the pollution is small, the loss of raw materials in the manufacturing process is less, and the rawmaterial cost is saved. The aluminum alloy liner processed by the manufacturing method has the advantages of being huge in size, high in reliability, thin in wall, and light in weight; the internal material is uniform and compact in structure and excellent in overall strength effect, and has the characteristics of ultrahigh pressure resistance.
Description
technical field [0001] The invention belongs to the technical field of high-pressure containers, and in particular relates to a large ultra-high-pressure gas cylinder liner and a manufacturing method thereof. Background technique [0002] With the rapid development and industrialization of hydrogen fuel cells and electric vehicles, the research and construction of hydrogen source technology and hydrogen energy infrastructure have attracted great attention from developed countries. Safe and economical hydrogen storage and transportation technology is the key to promote the practical and industrialization of hydrogen energy utilization. High-pressure hydrogen storage using ultra-high pressure gas cylinders with a pressure of 35-70MPa is the most commonly used and most direct way of hydrogen storage. High-pressure hydrogen storage can be used at room temperature, and the hydrogen can be released directly through the adjustment of the valve. It has the advantages of simple stru...
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Application Information
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