Guangzhou Marine Geological Survey

Fangfei Huang

Qiuping Lu

Jiangong Wei

Jianliang Ye

Yanjiang Yu

Xuwen Qin

Zenggui Kuang

Haijun Qiu

Jingan Lu

Beibei Kou

Zhigang Zhang

A natural gas hydrate pressure-retaining corer includes an outer tube assembly and an inner tube assembly installed inside the outer tube assembly. The inner tube assembly includes a first inner tube assembly and a second inner tube assembly. The first inner tube assembly includes a spearhead, a latching device, a suspension plug, a hydraulic piston tube, a piston short limit short section, a limit copper pin, a sealing head, a middle tube, a weight tube drive mechanism and a pressure-retaining ball valve closing sealing mechanism which are sequentially connected from top to bottom. The second inner tube assembly includes a piston compensation balance mechanism, a single-action mechanism, an accumulator mechanism, a sealing mechanism and a core barrel connected sequentially from top to bottom.

Natural gas hydrate pressure-retaining corer

Growing community of inventors

Guangzhou, China

Fangfei Huang