coal seam water pressure inflatable packer

Features:

Punch is a new generation of patented product factory, used in coal seam water injection, to overcome the original rubber ball squeeze, the core tube outside the tube-type sealing device using cumbersome, low efficiency, the shortcomings of recovery difficulties. The overall structure of the new design and manufacture of the sealing device. Simple operation, easy to use, can be used repeatedly. To reduce labor intensity, improve work efficiency, reduce dust hazards, to ensure the health of miners played a certain role. Dozens of domestic mines in the extensive use of the program, the effect is good.

Structural characteristics and working principle:

The sealing device consists of high-pressure straight through, expansion body, guide body, sequence valve. 20 type of expansion for the wire rope wound rubber hose, working pressure 20MPa, can be used for high-pressure water injection and gas drainage; 4.5 type of expansion for the nylon cord wrapped rubber hose, working pressure 4.5MPa, can be used for hydrostatic water injection . Sequence valve pressure can be arbitrarily adjusted between 0-4MPa, adjust the sequence valve according to the water pressure and coal seam hardness.

When the high pressure of the sealing device is communicated with the pressure waterway, it expands rapidly as the pressure greater than 1MPa expands (the diameter increases and the length becomes smaller). By utilizing the frictional resistance caused by the large friction coefficient of the rubber material, the outer diameter of the expansion body is fastened on the wall of the coal seam to close the hole.

The pressure waterway is separated from the high-pressure straight through, the water in the expansion body is automatically discharged, and the original state is restored due to the high elasticity of the rubber and the resilience of the reinforcement layer.