China Coal Research Institute

China Coal Technology & Engineering Group Shenyang Engineering Company

Ccteg Shenyang Research Institute

Fuchao Tian

Rui Zhou

Zhongyu Zheng

Yong Sun

Jie Li

Shuanglin Song

Xiangning Meng

Yongming Zou

Weiwei Su

Yang Xu

Xunqiang Yan

Yujin Qin

Weili Sun

Yuntao Liang

Jincheng Wang

Jinkui Ma

An on-line multi-component gas analysis system based on a spectral absorption technology includes a housing, wherein the housing includes an air inlet hole and an air outlet hole which are respectively connected with an air inlet pipe and an air outlet pipe, and the housing includes a dust removal and dehumidification device, a micro vacuum pump, an electronic flowmeter, and a plurality of different gas sensors; the dust removal and dehumidification device, which is configured to perform dust removal and dehumidification treatment on a gas entering from the air inlet hole; the micro vacuum pump, one end of which being connected with the dust removal and dehumidification device through a pipeline, and the other end of which being connected with the electronic flowmeter; and the plurality of different gas sensors. The disclosure includes an analysis method based on the on-line multi-component gas analysis system based on a spectral absorption technology.

On-line multi-component gas analysis system based on spectral absorption technology and analysis method thereof

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.

Sealing quality detection device and sealing quality evaluating method for gas extraction boreholes

Growing community of inventors

Shenyang, China

Fuchao Tian