公开(公告)号：US12221849B2

公开(公告)日：2025-02-11

申请号：US17997275

申请日：2021-01-26

Applicant: SICHUAN UNIVERSITY

Inventor： Mingzhong Gao ,  Ling Chen ,  Jianan Li ,  Cong Li ,  Zhiqiang He ,  Le Zhao ,  Mingqing Yang ,  Nianhan Wu ,  Bo Yu

IPC: E21B34/14 ,  E21B33/06 ,  E21B34/12

Abstract: An internal blowout-prevention gas-retaining connector has a body mounted at the bottom of a drill pipe. The body includes a valve pipe section and a connecting pipe section arranged from top to bottom. The bottom of the valve pipe section is inserted into the top of the connecting pipe section. The blowout-prevention valve seat is provided at a bottom end of the valve pipe section while a blowout-prevention valve bonnet is provided on a bottom surface of the valve pipe section. The edge of the blowout-prevention valve bonnet is rotatably connected to a bottom surface edge of the valve pipe section. A torsion spring is provided on a bottom surface of the blowout-prevention valve bonnet. One end of the torsion spring is connected to the bottom surface of the blowout-prevention valve bonnet while the other end is connected to the inner wall of the connecting pipe section.

公开(公告)号：US11821274B2

公开(公告)日：2023-11-21

申请号：US17433335

申请日：2019-07-05

Applicant: SHENZHEN UNIVERSITY ,  SICHUAN UNIVERSITY

Inventor： Heping Xie ,  Mingzhong Gao ,  Ling Chen ,  Guoqing Zhang ,  Jianan Li ,  Jianbo Zhu ,  Cunbao Li

IPC: E21B25/00 ,  E21B49/02 ,  E21C51/00 ,  E21B6/02 ,  E21B19/086

CPC classification number: E21B25/00 ,  E21B6/02 ,  E21B19/086 ,  E21B49/02 ,  E21C51/00

Abstract: A moon-based in-situ condition-preserved coring multi-stage large-depth drilling system and method therefor. The system includes a rotary plate provided inside a lander, an in-situ condition-preserved coring tool provided on a surface of the rotary plate, a space frame provided on a surface of the rotary plate, a working platform provided on a top of the space frame, a mechanical arm provided on a bottom surface of the working platform, and a camera provided on the bottom surface of the working platform, the mechanical arm is fixedly connected to the working platform, and the camera is fixedly connected to the working platform. By controlling the mechanical arm to place the in-situ condition-preserved coring tool on the moon surface, and using the in-situ condition-preserved coring tool to sample the lunar soil on the moon surface, the coring operation problem of the lunar soil is solved.

公开(公告)号：US12252942B2

公开(公告)日：2025-03-18

申请号：US18035762

申请日：2022-09-23

Applicant: SICHUAN UNIVERSITY

Inventor： Zetian Zhang ,  Heping Xie ,  Ru Zhang ,  Ling Chen ,  Yihang Li ,  Heng Gao ,  Jianan Li ,  Wei Huang ,  Li Ren ,  Kun Xiao ,  Weiqiang Ling ,  Chendi Lou

IPC: E21B19/24

Abstract: A rolling and sliding adaptive device for guiding and fixing a drill pipe includes a mounting platform, where the mounting platform is provided with a through hole for the drill pipe to pass through. Multiple rolling and sliding support mechanisms are arranged around the through hole. The rolling and sliding support mechanisms each include a support seat. The support seat is provided with a contact element telescopic and swingable on the support seat. A telescopic drive mechanism is provided between the contact element and the support seat. The contact elements on the multiple rolling and sliding support mechanisms form a funnel-shaped structure with a large upper part and a small lower part around the through hole. The rolling and sliding adaptive device is used on a deep in-situ high-fidelity coring calibration platform for accurate positioning of an assembly process of a multi-section drill pipe bin.

公开(公告)号：US12130646B2

公开(公告)日：2024-10-29

申请号：US18034401

申请日：2022-12-22

Applicant: SICHUAN UNIVERSITY

Inventor： Zetian Zhang ,  Heping Xie ,  Ru Zhang ,  Yihang Li ,  Jianan Li ,  Ling Chen ,  Mingzhong Gao ,  Wei Huang ,  Li Ren ,  Chendi Lou ,  Kun Xiao ,  Weiqiang Ling ,  Zhilong Zhang

IPC: G05D27/02 ,  G05D16/20

CPC classification number: G05D27/02 ,  G05D16/2066

Abstract: A real-time temperature-pressure detection and rapid processing system for a calibration platform, comprises an inner return pipe, and a water supply pipe is provided therein with an inner water supply pipe. An outer wall of the inner water supply pipe is connected with an inner wall of the water supply pipe through multiple springs. An outer wall of the inner return pipe is connected with an inner wall of a return pipe through multiple springs. The return pipe and the water supply pipe are made of a thermosetting polymer material. The multiple springs, the inner water supply pipe, and the inner return pipe are covered with a heat conducting material. The system further includes a temperature-pressure detection assembly. The assembly includes multiple infrared sensors arranged at two sides of the return pipe and the water supply pipe, a booster pump, a heater, and infrared sensors connected with a control unit.

公开(公告)号：US12128512B2

公开(公告)日：2024-10-29

申请号：US18031357

申请日：2022-09-23

Applicant: SICHUAN UNIVERSITY

Inventor： Heping Xie ,  Ru Zhang ,  Zetian Zhang ,  Ling Chen ,  Mingzhong Gao ,  Zhilong Zhang ,  Yang Yang ,  Jianan Li ,  Wei Huang ,  Li Ren ,  Yihang Li ,  Kun Xiao ,  Weiqiang Ling ,  Chendi Lou ,  Heng Gao

IPC: B23P19/04 ,  B23P19/10 ,  E21B41/00 ,  G01M99/00 ,  E21B25/00

CPC classification number: B23P19/04 ,  B23P19/10 ,  E21B41/00 ,  G01M99/008 ,  E21B25/00 ,  Y10T29/49895

Abstract: An assembly method for a deep in-situ high-fidelity coring calibration platform includes the following steps: S1: fixing a core bin assembly subsystem on a preset ground foundation and fixing a simulator of a core bin on a mounting base plate of the core bin assembly subsystem; S2: driving a cylinder and driving the mounting base plate to move to a preset position; S3: driving a servo motor and controlling two clips to move close to each other; S4: fixing a drill pipe bin assembly subsystem on the ground foundation; S5: assembling multiple sections of a drill pipe bin in turn; aligning and connecting a bottom of the drill pipe bin to the simulator, and aligning and communicating the top of the drill pipe bin with the lower part of an adaptive drill pipe guide structure; and S6: driving the adaptive drill pipe guide structure to perform accurate positioning.