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. 12, 2024
Filed:
Mar. 28, 2023
China Coal Technology & Engineering Group Shenyang Engineering Company, Shenyang, CN;
Weiwei Su, Shenyang, CN;
Yujin Qin, Shenyang, CN;
Rui Zhou, Shenyang, CN;
Zhongyu Zheng, Shenyang, CN;
Jie Li, Shenyang, CN;
Fuchao Tian, Shenyang, CN;
Yongming Zou, Shenyang, CN;
Yang Xu, Shenyang, CN;
Xunqiang Yan, Shenyang, CN;
Weili Sun, Shenyang, CN;
Jinkui Ma, Shenyang, CN;
Abstract
A sealing quality detection device for gas extraction boreholes includes a detection host, a detection pipe, a sealing element, and a three-way pipe. A plurality of air inlets and a plurality of exhaust ports are formed above the detection host, a negative pressure injector is arranged in the detection host, a quick joint and a control switch are also arranged on the detection host, the quick joint is used to be connected with an underground wind pipe, the underground wind pipe is connected to an underground compressed air tube, and the control switch is used for starting and switching off the negative pressure injector in the detection host. A sealing quality evaluating method for gas extraction boreholes is provided.