MD-2 coal drilling cuttings gas analyzer

MD-2 coal drilling cuttings gas analyzerIt is mainly used for predicting and forecasting the danger of coal and gas outburst in underground coal and gas outburst mines, coal tunnels, and mining faces, and testing the anti outburst effect of anti outburst measuresOne of the important indicators of coal and gas outburst is the Δ h2 value of coal seam drilling cuttings gas desorption index. This instrument adopts advanced micro differential pressure sensors, combined with microcontroller control technology and airflow control technology, to develop a suitable instrument for coal mines in ChinaA new type of measuring instrument required for safety production. In the prevention and control of coal and gas outbursts, the parameters can be directly predicted at the work site in an accurate, fast, time-saving, labor-saving, and fully automated manner. The entire measurement process only requires 5 stepsmin。
When drilling on the coal mining face at Shimen, one coal mining cuttings sample should be taken for every 1m coal hole drilled. When the drilling reaches the predetermined sampling depth, start the stopwatch to start timing. When the drill cuttings are discharged from the hole, use a sieve to collect the coal drill cuttings at the hole. warpAfter screening, take a coal sample with a particle size of 1-3mm (1mm sieve top product, 3mm sieve bottom product) and put it into coal sample bottle 3. The coal sample should be loaded to the mark line position of the coal sample bottle (equivalent to 10g of coal sample)
When drilling on the mining face, one coal mining cuttings sample should be taken every 2 meters. The sampling method and requirements are the same as those for the Shimen coal mining face
MD-2 coal drilling cuttings gas analyzerMeasurement operation steps
① Firstly, open the two-way valve, then quickly place the coal sample bottle that has already been mined into desorption chamber 2, tighten the upper cover of the desorption chamber, open the three-way valve 4, so that the desorption chamber is connected to water column meter 1 and the atmosphere, and the coal sample is in an exposed state
② When the exposure time of the coal sample is 3 minutes, quickly rotate the three-way plug knob clockwise in the cold tube to isolate the desorption chamber from the atmosphere and only connect it to the water column meter. Start the desorption measurement and restart the timing of MD-2 coal drill chip tileSi desorption instrument
③ Record the pressure difference of the desorption instrument water column gauge every 1 minute and measure continuously for 10 minutes

MD-2 coal drilling cuttings gas analyzerTechnical parameters:
Measurement range: 10Pa~2KPa
Measurement error: ± 5%
Display mode: 8-bit LCD display
Working hours: Over 8 hours
Measurement of coal sample: 10g
Coal sample particle size: 1-3mm
Measurement process: 5 minutes
Working humidity: ≤ 96% RH
Atmospheric pressure: 80-110KPa
Dimensions: 190 (length) x 118 (width) x 64 (thickness) mm
Instrument weight: 1.5Kg
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