Detachable type ground test supercritical helium storage container restraining thermal-acoustic oscillation

Abstract

The invention relates to a detachable type ground test supercritical helium storage container restraining thermal-acoustic oscillation and belongs to the technical field of astronautic propellant pressurization. The detachable type ground test supercritical helium storage container restraining thermal-acoustic oscillation is used for ground test researches of a supercritical helium storage and pressurization technology. The detachable type ground test supercritical helium storage container has the thermal-acoustic oscillation active restraining function. The detachable type ground test supercritical helium storage container has excellent thermal insulation performance through damping gas reservoirs, a variable-density multilayer thermal insulation material, low heat leakage lifting rods and a high-vacuum-degree environment, and the supercritical helium long-time storage and pressurized discharging demands are met. Meanwhile, the detachable type structure is adopted, reversible disassembly and assembly and replacement of all parts in the supercritical helium storage container can be conducted, and multiple research demands in the ground stage of the supercritical helium storage andpressurization technology can be met.

Description

technical field [0001] The invention relates to a supercritical helium storage container, in particular to a detachable supercritical helium storage container considering thermoacoustic oscillation suppression measures, which is used for the ground test research of supercritical helium pressurization systems of launch vehicles and space vehicles, and belongs to Aerospace propellant pressurization technology field. technical background [0002] Since the supercritical helium storage pressurization technology has the advantages of high efficiency, reliability, safety, light system structure, and small unusable amount of remaining helium, this technology has great development prospects in the field of aerospace propellant pressurization technology. However, the technology is still in the exploratory research stage and needs to be verified by extensive ground tests before it can be applied to liquid rocket or spacecraft pressurization systems. Therefore, the key component of th...

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Problems solved by technology

[0004] (1) The container lacks measures to actively suppress thermoacoustic oscillations, and thermoacoustic oscillations are very easy to occur in supercritical helium containers, which will bring much higher leakage heat to the container than expected in the adiabatic design, shortening the storage time of supercritical helium , at the same time, the thermoacoustic oscillation will also cause the temperature and pressure inside the container to fluctuate violently, which will bring errors to the measurement;

[0005] (2) The container is integrally formed by welding. Once the processing and packaging are completed, the internal structure of the container cannot be changed in any form. If there is a problem with parts such as connecting pipelines or measuring sensors, or it is necessary to change the internal structure for different working conditions According to the experimental research, the supercritical helium storage container with this structure will be powerless

[0006] The U.S. patent "Pressurizing device and method" with the patent number US9341315 proposes a new supercritical helium pressurization system workflow, but has never involved the specific structure of the supercritical helium storage container

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