A device for measuring the k1 value of drilling cuttings gas desorption index

Abstract

The invention relates to a measurement device of drilling cuttings methane desorption index K1 value. The device comprises a drilling cuttings methane desorption index K1 value determination module and a coal sample collection tank; the K1 value determination module and a tank cover of the coal sample collection tank are connected together in integrated design; the K1 value determination module includes a K1 determination module shell, a circuit board arranged in the shell and a one-chip microcomputer arranged on the circuit board; an explosion-proof lithium battery is installed in the shell; a wireless transmission module and a micro pressure sensor are respectively arranged above and below the explosion-proof lithium battery; the lower part of the K1 value determination module shell is connected to the tank cover of the coal sample collection tank by a three-way hollow stud; and a coal sample cup tray is arranged in the coal sample collection tank, and the coal sample cup is arranged on the tray. The device can conduct be wireless transmission, sharing and printing data via Bluetooth, and the device is portable and convenient for operation; and the coal sample tank has a double-layer design, which greatly reduces the influence of outside ambient temperature on the measured data during K1 value determination, so that the determination result is more accurate.

Description

technical field [0001] The invention belongs to the technical field of mining safety measuring instruments, and relates to a device for measuring the K1 value of the desorption index of drilling cuttings gas. Background technique [0002] Coal and gas outburst is one of the main disasters that seriously threaten the safe production of coal mines. For decades, our country has carried out a large number of effective researches on it, and formed a set of "four in one" comprehensive outburst prevention system. The prediction of the outburst risk of the working face is an extremely important link in the prevention and control of coal and gas outburst. At present, the cuttings index method is widely used in production practice, and the K1 value of the cuttings gas desorption index is an important part of the cuttings index method. index. [0003] There are many kinds of instruments for measuring the K1 value of drilling cuttings gas desorption index in the market, but generally ...

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Problems solved by technology

[0003] There are many kinds of instruments for measuring the K1 value of drilling cuttings gas desorption index in the market, but generally speaking, the main components of the existing instruments for measuring the K1 value of drilling cuttings gas desorption index are divided into two independent parts: the main engine and the coal sample collection tank. Large size, heavy weight, and cumbersome keys, which are not convenient for underground workers to carry and operate; coal sample collection tanks are mostly single-layer structures. In the underground environment, the desorption process of coal sample drilling cuttings gas in the tank is greatly affected by the external environment temperature. Affect the stability of the instrument, resulting in large differences in the K1 data measurement results

At the same time, the data transmission method of the measuring instruments for the K1 value of the drilling cuttings gas desorption index on the market is single, which is not convenient for data transmission, sharing and consultation

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