Water injection hole packer is used to inject water to coal, which can reduce the gas content and dust. As a result, it can improve the safety coefficient of mine construction and production greatly. It is composed of high pressure inflation rubber hose, safety value and rapid-acting coupling. And it can be used repeatedly for 30 - 50 times.
The function of water injection hole packer:
· It can inject water into the coal bed which can release some gas. So it can reduce the gas content effectively.
· The dust can be reduced by 80% if the water-flooding effect is good. So it can improve the workers' operation conditions greatly and
prevent the dust explosion accident effectively.
· The water can humidify the coal bed, which can prevent the auto-ignition of the coal.
· The water is injected in high pressure, which can crush the coal. So it can lessen initiating explosive devices, lower the cost and increase
the workers' sense of safety.
· Breaking coal with water injection hole packer can prevent the explosion of coal and gas effectively.
The details of water injection hole packer:
· Structure: water injection hole packer is composed of high pressure inflation hose, safety value and rapid-acting coupling. And high pressure inflation hose is made from high quality NR synthetic rubber, which is resistant to abrasion, weather, ozone and high pressure.
· Sealing hole diameter: 25 mm - 155 mm (changeable according to customers' requirements).
· Working pressure: 1 MPa - 8 MPa (changeable according to customers' requirements).
· Safety value opening pressure: 0.4 MPa - 0.5 MPa.
· Working flow: it can inject water 4 t - 5 t per hour.
· Sealing hole depth: 1 m - 8 m.
· Hose inflation coefficient: 60% - 100%.
· Inflatable area: 24 mm - 160 mm.
· Inner diameter: 10 mm - 102 mm.
· Outside diameter: 24 mm - 128 mm.
· Test pressure: 6 MPa - 30 MPa.
· Burst pressure: 12 MPa - 40 MPa.
| specification | ID | OD | Sealing aperture | Inflatable area | Max pressure | Test pressure | Burst pressure |
| mm | mm | mm | mm | Mpa | Mpa | Mpa |
| φ10 - 2 | 10 ± 0.5 | 24 ± 1.5 | 25-35 | 25-48 | 10 | 18 | 36 |
| φ16 - 2 | 16 ± 0.5 | 30 ± 1.5 | 35-45 | 30-50 | 8 | 16 | 32 |
| φ16 - 4 | 16 ± 0.5 | 36 ± 1.5 | 35-45 | 36-50 | 20 | 30 | 40 |
| φ19 - 2 | 19 ± 0.5 | 36 ± 1.5 | 40-50 | 36-60 | 8 | 16 | 32 |
| φ19 - 4 | 19 ± 0.5 | 40 ± 2.0 | 40-50 | 40-60 | 20 | 30 | 40 |
| φ22 - 2 | 22 ± 0.5 | 39 ± 2.0 | 45-55 | 39-80 | 6 | 12 | 24 |
| φ22 - 4 | 22 ± 0.5 | 45 ± 2.0 | 45-55 | 45-80 | 20 | 30 | 40 |
| φ25 - 2 | 25 ± 0.5 | 33 ± 2.0 | 50 - 60 | 33-85 | 6 | 12 | 24 |
| φ25 - 4 | 25 ± 0.5 | 48 ± 2.0 | 50-60 | 48-85 | 16 | 30 | 40 |
| φ32 - 2 | 32 ± 0.5 | 50 ± 2.0 | 55-65 | 50-90 | 6 | 12 | 24 |
| φ32 - 4 | 32 ± 0.5 | 50 ± 2.0 | 55-65 | 50-90 | 16 | 24 | 32 |
| φ38 - 2 | 38 ± 0.5 | 55 ± 2.0 | 60 - 70 | 55 - 95 | 5 | 10 | 20 |
| φ38 - 4 | 38 ± 0.5 | 60 ± 2.0 | 60 - 70 | 60-95 | 16 | 24 | 32 |
| φ45 - 2 | 45 ± 0.5 | 63 ± 2.0 | 70 - 80 | 63-100 | 4 | 8 | 16 |
| φ45 - 4 | 45 ± 0.5 | 69 ± 2.0 | 70 - 80 | 69-100 | 16 | 24 | 32 |
| φ51 - 2 | 51 ± 0.5 | 69 ± 2.0 | 85 - 95 | 69-110 | 4 | 8 | 16 |
| φ51 - 4 | 51 ± 0.5 | 75 ± 2.0 | 85 - 95 | 75-110 | 16 | 24 | 32 |
| φ64 - 2 | 64 ± 0.5 | 84 ± 2.0 | 95 - 105 | 84-120 | 3 | 6 | 12 |
| φ64 - 4 | 64 ± 0.5 | 90 ± 2.0 | 95 - 105 | 90-120 | 8 | 12 | 16 |
| φ76 - 2 | 76 ± 0.5 | 94 ± 2.0 | 105 - 115 | 90-130 | 3 | 6 | 12 |
| φ76 - 4 | 76 ± 0.5 | 99 ± 2.0 | 105 - 115 | 94-130 | 3 | 6 | 12 |
| φ89 - 2 | 89 ± 0.5 | 109 ± 2.0 | 125 - 135 | 109-140 | 8 | 12 | 16 |
| φ89 - 4 | 89 ± 0.5 | 115 ± 2.0 | 125 - 135 | 115-140 | 8 | 10 | 18 |
| φ102 - 2 | 102 ± 0.5 | 122 ± 2.0 | 145 - 155 | 122-160 | 3 | 6 | 12 |
| φ102 - 4 | 102 ± 0.5 | 128 ± 2.0 | 145 - 155 | 128-160 | 6 | 10 | 16 |
Application of water injection hole packer:
· Water injection hole packer is used to inject water into coal bed, which can reduce gas content and dust.
· It can prevent the coal auto-ignition.
· It can lower the cost and increase workers' sense of safety.
· It can prevent explosion accident effectively.
