Gas sampling device suitable for goaf behind fully mechanized coal mining face frame

• Main Authors: GAO SHIQIANG, LIAN JIANJUN, YE LIJIN, HUANG PEIWEN, ZHANG ZHIZHONG, MA BIN, ZHOU LIANG, WANG LELE, TANG MINGYUN, FANG YUNMAI, SHA LIN, YANG MINGFU
• Format: Patent
• Language: Chinese; English
• Published: 02.02.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention relates to a gas sampling device suitable for a goaf behind a fully mechanized coal mining face frame, the gas sampling device comprises a gas sampling head, a high-pressure rubber pipe and a portable negative pressure air pump, the gas sampling head is arranged in the goaf behind a hydraulic support, the gas sampling head is connected with one end of the high-pressure rubber pipe, and the other end of the high-pressure rubber pipe is connected with the portable negative pressure air pump. The gas sampling head comprises a stainless steel inner sleeve and a stainless steel outer sleeve, a plurality of air holes are uniformly distributed at one end of the stainless steel inner sleeve, a stainless steel hexagonal external thread connector is arranged at the other end of the stainless steel inner sleeve, and the stainless steel outer sleeve sleeves one end, far away from the stainless steel hexagonal external thread connector, of the stainless steel inner sleeve. According to the invention, gas sam