액체수소운반선용 이중진공단열배관의 핵심 특허분석을 통한 R&D 전략

The double vacuum insulation pipe is a pipe that can dualize the pipe that transfers ultra-cold fluid to exhaust a vacuum between the pipe and the pipe to maximize the insulation effect in a high vacuum state, and has advantages in terms of excellent insulation performance, energy efficiency improvement, long life, stability, and others. It is necessary to develop a large double vacuum insulation pipe of 150A or higher with the multilayer vacuum insulation method applied to liquefied hydrogen carriers. Accordingly, technology development differentiation strategies and R&D strategies were derived through patent analysis on double vacuum insulation pipes. As a result of the analysis of key patents for double vacuum insulation pipes, it was analyzed that continuous research and development is underway in the member that increases airtightness when connecting or joining the pipe, the member that minimizes the effect of expansion and contraction of the pipe according to temperature, and the vacuum monitoring member of the pipe. Through the final patent analysis, four R&D strategy directions were derived: airtightness of double vacuum insulation pipes, insulation and stress reduction structures, vacuum maintenance, and maintenance. ①In the case of airtightness, parts such as O-rings, connectors, assemblies, sleeves, palenzies, gaskets, etc., in the case of insulation and stress reduction, parts such as bellows, loops, support, MLI, etc. in the case of vacuum maintenance, development of getters, vacuum ports, and ④ in the case of maintenance, development of measurement technology such as pressure measurement sensors and gas detection sensors are necessary.