Measuring instrument for initial velocity of borehole gas emission

  Zws-1 gas emission initial velocity measuring instrument is a new technical product carefully developed on the basis of similar foreign products
Zws-1 borehole gas emission initial velocity measuring instrument has the advantages of compact structure, light weight, simple operation, convenient use, stability, rapid and accurate test, intuitive and reliable reading and so on
It provides a portable and rapid testing instrument for outburst risk prediction of coal seam mining face, which can be used by coal mine outburst prevention departments, coal scientific research institutions, etc
it can also be used for the measurement of parameters such as gas emission from coal seam drainage boreholes
Zws-1 borehole gas emission initial velocity measuring instrument features: it has the advantages of compact structure, light weight, simple operation, convenient use, stability, rapid and accurate test, intuitive and reliable reading, etc
it is suitable for on-site use in coal mines and has popularization and application value in outburst mines
It is mainly used in coal mining face to directly measure the initial gas emission velocity of coal seam borehole and predict the gas outburst risk of coal seam face
It provides a portable and fast test instrument for the outburst risk prediction of coal seam mining face
It can also be used for measuring the gas emission parameters of coal seams and coal mine disaster prevention departments
It can be used in dangerous places with gas
It is composed of coal dust filter, shell, panel and shoulder strap
The panel is equipped with a flow display, an air inlet nozzle and a shift flowmeter, which are connected by means of hoses and quick sealing joints
The gas enters the flow indicator and shift flowmeter through the hose from the air inlet nozzle
Due to the throttling effect of the shift flowmeter, the gas pressure in the sealing chamber rises and pushes the pointer of the flow indicator to swing, so as to measure the initial speed of gas emission from coal seam drilling It is a throttling differential pressure flowmeter, which works according to the principle of flowmeter
After the borehole is formed in the coal seam, due to the formation of broken area and plastic area around the borehole, the permeability of the coal seam is improved and gas is gushed into the borehole
Technical parameters of zws-1 borehole gas emission initial velocity tester Measurement range: 0
5 ~ 30L / min, large hole sealing depth: 10M; Closed borehole diameter: 42 ~ 50mm; Sealable pressure: 0
06mpa; Rated inflation pressure: 0
2MPa; Overall dimension of hole sealer: & phi; 38× 410。 Accuracy grade: ambient temperature 20 & plusmn; At 10 ℃, it is & plusmn at 10% ~ 90%; 2
5%, less than 10% and more than 90% are & plusmn; 4%。 Weight: 0
97kg overall dimension: 155 & times; 100× 125mm service environment conditions: - 25 ~ 55 ℃, relative humidity ≤ 85%  Zhengzhou Huazhi production and supply gas pressure measuring instrument | gas desorption instrument | density measuring instrument | geological exploration gas desorption instrument | gas content rapid measuring instrument | gas stick | bladder | gas adsorption constant measuring instrument | gas diffusion velocity tester | U-shaped inclined differential pressure gauge | positive pressure oxygen respirator | deep hole fixed-point sampling device | DGC coal sample tank