Gas gushing initial velocity measuring device

Abstract

The invention discloses a measuring device for the initial velocity of gas emission. The measuring device comprises a hole packer, a measuring tube and a data collecting instrument, wherein the hole packer is used for drilling holes in a sealed mode so that a gas chamber can be formed; the measuring tube penetrates through the hole packer and extends to the measuring tube of the gas chamber; and the data collecting instrument is arranged on the measuring tube. The data collecting instrument comprises a wireless data transmission module used for wirelessly transmitting collected data to an external terminal. According to the measuring device for the initial velocity of gas emission, the wireless data transmission module is implanted into the data collecting instrument, thus, wireless transmission can be achieved without manual recording on the spot, the measuring efficiency can be improved, and tedious data line connection in data reading and printing processes is avoided; the wireless data transmission module can be wirelessly connected with the external terminal, and transmitting, sharing and referring of the data are facilitated; potential man-made modification and mistake making are effectively avoided through the automatic recording mode, and the confidence level of a measuring result is improved.

Description

technical field [0001] The invention relates to a flow velocity measuring device, in particular to a gas gushing initial velocity measuring device. Background technique [0002] Coal and gas outburst is one of the main disasters that seriously threaten the safe production of coal mines; for decades, my country has conducted a large number of effective researches on it, forming a "four-in-one" comprehensive outburst prevention system; the initial velocity of gas gushing It is an important indicator for predicting the risk of coal and gas outburst or the effect of outburst prevention measures; the initial velocity of gas gushing out of boreholes is generally measured by sending the hole sealer into the drill hole within a specified time after the coal seam is drilled. The position at an appropriate distance in front of the hole, and seal the drilled hole to form a gas chamber, and measure the maximum discharge of the gas chamber with a specific length. The existing gas gushing ...

AI Technical Summary

Problems solved by technology

The existing gas gushing initial velocity measurement device includes a hole sealer, a measuring tube passing through the hole sealing device and extending to the gas chamber, and a data acquisition device installed in the measurement tube. The data acquisition device collects and displays flow data, which is recorded manually on the spot , its measurement efficiency is low, it is not convenient for data transmission, sharing and review, and there is the possibility of human modification and human error, and the reliability of the measurement results is low

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