The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 2020
Filed:
Aug. 09, 2019
Guangzhou Marine Geological Survey, Guangzhou, KR;
Jianliang Ye, Guangzhou, CN;
Qiuping Lu, Guangzhou, CN;
Haijun Qiu, Guangzhou, CN;
Jingan Lu, Guangzhou, CN;
Beibei Kou, Guangzhou, CN;
Yanjiang Yu, Gaungzhou, CN;
Zenggui Kuang, Guangzhou, CN;
Chengzhi Yang, Guangzhou, CN;
Liang Chen, Guangzhou, CN;
GUANGZHOU MARINE GEOLOGICAL SURVEY, Guangzhou, CN;
Abstract
The present invention relates to a natural gas hydrate rotary pressure-retaining corer, including an outer tube assembly and an inner tube assembly installed inside the outer tube assembly. The inner tube assembly includes an inner tube assembly a and an inner tube assembly b. The inner tube assembly a includes a spearhead, a latch mechanism, a long tube, a middle tube sub, a short joint, a sealing sub, a connecting tube, a middle tube and a pressure-retaining ball valve closing sealing mechanism connected sequentially from top to bottom. The inner tube assembly b includes a lifting device, a latch suspension mechanism, an spirol pin sub, a single-action mechanism, a dapter, an adjustment joint, a connecting tube, a sealing mechanism, a connecting long tube, a connecting long tube sub and a core barrel connected sequentially from top to bottom.