干冰升华式天然气水合物孔底冷冻取样器的研制

摘要

针对天然气水合物的赋存特点,研制天然气水合物孔底冷冻取样器.取样器是以干冰为冷冻剂,酒精为助冷催化剂和载冷剂的冷冻方式来实现孔底冷冻岩样.介绍了取样器的技术参数、冷冻方式原理、工作原理和结构特点.%According to the stratum characteristic of gas hydrates, the sample for gas hydrates by hole bottom freezing is developed.The freezing method is that the dry ice is used as coolant,the alcohol as positive freezing catalyst and cooling medium.It describes the design parameters ,freezing method principle ,operating principle and structure features.