Desorbable gas content measuring device

  The desorbable gas content measuring device can be applied to the prediction of gas emission, the prediction of outburst dangerous working face and region, the evaluation of pre drainage gas and the compilation of gas geological map
The DGC desorbable gas content measuring device measures the gas desorption speed and amount of the coal core by directly drilling the coal core at the depth, and uses a specific mathematical model to calculate the gas loss before the coal sample is loaded into the coal sample barrel for sealing; Main technical indicators: determination time: & lt; The 8hdgc desorbable gas content measuring device calculates the original gas content and the original desorbable gas content by measuring the relevant parameters in the laboratory
The measurement time of this set of process and equipment is short, and the measurement time is generally less than 8 hours; Compared with the indirect method, the measurement quantity is less and the measurement cost is low; The selection of measuring location is less affected by geological structure, and a large number of measuring points can be measured; The reliability and rate of determination are high, and the degree is higher than the measured value of gas content during geological exploration
Executive standard of DGC desorbable gas content measuring device: basic parameters of DGC desorbable gas content measuring device in GB / t23250-2009 underground direct method for coal seam gas content: (1) the inner diameter of coal sample tank of underground desorption system is greater than 60mm, and the volume is enough to load more than 400g of coal sample
Downhole desorption pipe range: 800ml downhole desorption pipe accuracy: ≤ 2ml (2) ground gas desorption system power supply: 220V desorption pipe accuracy: ≤ Effective range of 5ml desorber: 1000ml / piece, 1500ml / piece, pumping rate of micro vacuum pump: 3L / min, thermometer: (- 50 ~ 0 ~ 500) ℃ electronic barometer: 977hpa ~ 1050hp (3) weighing system weighing 2000g, sensitivity 0
5g, ambient temperature 5 ~ 35 ℃, power supply voltage 220V (+ 10% ～ - 15%) power 5W (4) coal sample crushing system charging particle size: ≤ 26mm discharge particle size: (80-200) mesh working power supply: 380V, 50Hz, primary loading capacity: ≤ 1000g / bowl crushing time: (3-5) min motor power: 1
5kw (5) large load of moisture measurement system: 10g division value: 5mg differential scale reading range: (0 ~ 1) moisture measurement degree: & plusmn; 0
2g% temperature regulation range: (75 ~ 160) ℃ power supply and power consumption: 220V 50Hz 260wdgc technical requirements for desorbable gas content measuring device 1
The coal sample tank shall maintain air tightness under the air pressure of 1
5MPa
2
The coal sample shall pass the 95
25mm mesh (0
25mm mesh) sieve
The crushing system needs two sets of standby
3
The test data is reliable and the accuracy meets the standard requirements
Zhengzhou Aidi production and supply coal drilling cuttings desorption instrument Deep hole sampling device, pressure measuring instrument, geological exploration desorption instrument, borehole flowmeter, mine drainage and outburst prevention equipment, coal true apparent density measuring instrument, gas content measuring instrument, automatic measuring instrument of initial gas dispersion velocity, diffusion velocity measuring instrument, gas parameter instrument of coal drainage pipeline