Drill hole gas flow measuring device for coal seam rich in water and high in gas pressure

• Main Authors: LIU JUN, WANG JIANWEI, LIN FUJIN, NIE HAIYANG, SUN BINGXING, ZHU ZHENGLI, LI DAYONG, XU TENGFEI, XIANG YANBIN, HE YUNWEN, RAN QINGLEI, HUANG GUANGLI, ZHANG FENG, CHENG JIANSHENG, MA ZHIYONG, LI ZHIHENG, YANG LEILEI
• Format: Patent
• Language: Chinese; English
• Published: 28.01.2022
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model belongs to the field of coal seam drilling gas flow measuring devices, and relates to a drilling gas flow measuring device for a water-rich and high-gas-pressure coal seam, which comprises a gas collecting buffer device communicated with a drilling hole, a water collector arranged outside the gas collecting buffer device and a flow measuring instrument meter communicated with the gas collecting buffer device, the gas collection buffer device comprises a water storage chamber and a gas collection chamber, a drain hole communicated with the water collector is formed in the outer wall above the water storage chamber, and a liquid meter is mounted on the drain hole. According to the utility model, accumulated water in the drill hole can be effectively prevented from instantly releasing and damaging the flow measuring instrument, so that the flow measuring instrument can be protected, and the influence of the accumulated water in the drill hole on the flow measuring instrument when the gas flow o