DESIGN OF A NEW CRYO-VACUUM HOSE WITH MULTI-LAYER THERMAL INSULATION
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摘要: 随着低温火箭运载能力不断发展，推进剂的加注流量要求也在不断提高。原有的小通径加注管道已不满足大流量加注需求，必须设计一种大通径低温推进剂输送管道，这面临着大通径管道总成技术、绝热接头设计技术等难题。通过介绍在特定狭小空间内，为适应低温推进剂加注连接器的对接、脱落位置变化，设计了一种新型大通径低温真空多层绝热软管，包括管道总体方案的选型、关键参数的计算等。该方法已被应用于某低温推进剂输送管道的设计和加工，并通过了实际运行工况的试验考核，验证了设计方法的正确性，对同类管道设备的设计具有一定的参考价值。Abstract: With the development of cryogenic rocket carrying capacity, the requirement of filling flow of propellant is increasing. The original small diameter filling pipeline does not meet the requirements of large flow filling, a series of large diameter cryogenic tube must be designed. It is faced with problems such as large cryogenic tube assembly technology, thermal insulation joint design technology, etc. This paper introduces a new type of multi-layer thermal insulation hose, which is designed to adapt to the change of the position of the propellant filling connector in a specific narrow cabin, including the design of the overall scheme, the calculation of the key parameters and so on. The method has been applied to the design and manufacture of a propellant conveying pipeline, and has been tested by the actual working conditions, which verifies the correctness of the design method and has a certain reference value for the design of similar cryogenic equipments.
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Keywords:
- multi-layer thermal insulation /
- large diameter /
- cryo-vacuum hose
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