Summary of the invention
In order to overcome the deficiencies in the prior art, a kind of three-dimensional rotation water jet coal seam reaming system is provided, in coal seam reaming of three-dimensional rotation water jet and the anti-reflection method of pressure break, use, reduce hydraulic losses, improve cutting efficiency, realize smooth deslagging and reduce the reaming time spent.
The technical scheme of technical problem to be solved in the utility model is: a kind of three-dimensional rotation water jet coal seam reaming system, it is connected to the swinging chicksan by the high-pressure hydraulic pumping plant by the high-pressure rubber pipe that is provided with stop valve, characteristics are to be connected to the high-pressure water jet drilling rod again through behind the rig, high-pressure water jet drilling rod front end connects the high-pressure water jet shower nozzle that has nozzle base, installs the high pressure rotary water jet nozzle on nozzle base.
Wherein: for having coal and gas outburst danger or the coal seam of boring blowing phenomenon being arranged, establish the sealing of hole steel pipe at waterpower reaming boring open section, between sealing of hole steel pipe and waterpower reaming boring, inject sealing material, and at waterpower reaming drilling orifice installation boring blowout hookup, the extraction termination mine gas extraction system pipeline of boring blowout hookup.
Wherein: several nozzle bases of interlaced arrangement on perpendicular to the direction of high-pressure water jet shower nozzle axis make it in the distribution that is centrosymmetric perpendicular to the projection on the plane of high-pressure water jet shower nozzle axis.
Wherein: the high pressure rotary water jet nozzle of built-in guide vane wheel is installed on the nozzle base, and high pressure rotary water jet nozzle diameter is 1.7~2.5mm.
Wherein: the connection between being connected between being connected between high-pressure water jet shower nozzle and the high-pressure water jet drilling rod, swinging chicksan and the high-pressure water jet drilling rod, the high-pressure water jet drilling rod, all adopt the mode that is tightly connected of built-in crush seal and compound gasket, the swinging chicksan comprises axis of rotation, high-pressure seal ring and the external shell of hollow, and the junction adopts the rotatory sealing mode to seal.
The beneficial effects of the utility model are: adopt the three-dimensional rotation water jet that the coal seam section of waterpower reaming boring is carried out reaming, utilization can cut out the eyelet greater than tens of times to hundreds of times of its nozzle diameters than the nozzle of minor diameter, lower discharge, especially rotating jet mainly relies on shear action that coal body is cut, improved broken coal efficient, the ickings particle that is produced is less, taken out of boring by current easily, be difficult for plug-hole, high-pressure water jet abrasion resistant for spray nozzle, long service life, operation easily, expense is cheap.
The specific embodiment:
Accompanying drawing number
1. high-pressure hydraulic pumping plants among the figure, 2. stop valve, 3. swinging chicksan, 4. high-pressure rubber pipe, 5. rig, 6. high-pressure water jet drilling rod, 7. boring blowout hookup, 8. extraction system pipeline, 9. sealing material, 10. coal seam, 11. high-pressure water jet shower nozzles, 12. high pressure rotary water jet nozzles, 13. waterpower reaming boring, 14. the sealing of hole steel pipe, 16. guide vane wheels, 17. nozzle bases.
First embodiment
Referring to Fig. 1,2,3,4, for the coal seam 10 that does not have coal and gas outburst danger and the blowing phenomenon of not holing, a kind of three-dimensional rotation water jet coal seam reaming system, it is connected to swinging chicksan 3 by high-pressure hydraulic pumping plant 1 by the high-pressure rubber pipe 4 that is provided with stop valve 2, characteristics are to be connected to high-pressure water jet drilling rod 6 again through behind the rig 5, high-pressure water jet drilling rod 6 front ends connect the high-pressure water jet shower nozzle 11 that has nozzle base 17, install high pressure rotary water jet nozzle 12 on nozzle base.
Wherein: 2 nozzle bases 17 of interlaced arrangement on perpendicular to the direction of high-pressure water jet shower nozzle 11 axis make it be 180 degree angles perpendicular to the projection on the plane of high-pressure water jet shower nozzle 11 axis.
Wherein: high pressure rotary water jet nozzle 12 diameters are 2.3mm.
Wherein: the connection between being connected between being connected between high-pressure water jet shower nozzle 11 and the high-pressure water jet drilling rod 6, swinging chicksan 3 and the high-pressure water jet drilling rod 6, the high-pressure water jet drilling rod 6, all adopt the mode that is tightly connected of built-in crush seal and compound gasket, swinging chicksan 3 comprises axis of rotation, high-pressure seal ring and the external shell of hollow, and the junction adopts the rotatory sealing mode to seal.
Second embodiment
Referring to Fig. 1,2,3,4, for having coal and gas outburst danger or the coal seam 10 of boring blowing phenomenon being arranged, a kind of three-dimensional rotation water jet coal seam reaming system, it is connected to swinging chicksan 3 by high-pressure hydraulic pumping plant 1 by the high-pressure rubber pipe 4 that is provided with stop valve 2, be connected to high-pressure water jet drilling rod 6 again through behind the rig 5, high-pressure water jet drilling rod 6 front ends connect the high-pressure water jet shower nozzle 11 that has nozzle base 17, install high pressure rotary water jet nozzle 12 on nozzle base 17.
Wherein: 2 nozzle bases 17 of interlaced arrangement on perpendicular to the direction of high-pressure water jet shower nozzle 11 axis make it be 180 degree angles perpendicular to the projection on the plane of high-pressure water jet shower nozzle 11 axis.
Wherein: for having coal and gas outburst danger or the coal seam of boring blowing phenomenon being arranged, establish sealing of hole steel pipe 14 at waterpower reaming 13 open sections of holing, between sealing of hole steel pipe 14 and waterpower reaming boring 13, inject sealing material 9, and boring blowout hookup 7 is installed, the extraction termination mine gas extraction system pipeline 8 of boring blowout hookup 7 in waterpower reaming 13 apertures of holing.
Wherein: the high pressure rotary water jet nozzle 12 of built-in guide vane wheel 16 is installed on the nozzle base 17.High pressure rotary water jet nozzle 12 diameters are 2.0mm.
Wherein: the mode that is tightly connected of built-in crush seal and compound gasket is all adopted in the connection between being connected between being connected between high-pressure water jet shower nozzle 11 and the high-pressure water jet drilling rod 6, swinging chicksan 3 and the high-pressure water jet drilling rod 6, the high-pressure water jet drilling rod 6, swinging chicksan 3 comprises axis of rotation, high-pressure seal ring and the external shell of hollow, and the junction adopts the rotatory sealing mode to seal.
The 3rd embodiment
Referring to Fig. 1,2,3,4, for having coal and gas outburst danger or the coal seam 10 of boring blowing phenomenon being arranged, a kind of three-dimensional rotation water jet coal seam reaming system, it is connected to swinging chicksan 3 by high-pressure hydraulic pumping plant 1 by the high-pressure rubber pipe 4 that is provided with stop valve 2, be connected to high-pressure water jet drilling rod 6 again through behind the rig 5, high-pressure water jet drilling rod 6 front ends connect the high-pressure water jet shower nozzle 11 that has nozzle base 17, install high pressure rotary water jet nozzle 12 on nozzle base 17.
Wherein: 3 nozzle bases 17 of interlaced arrangement on perpendicular to the direction of high-pressure water jet shower nozzle 11 axis make it be 120 degree angles perpendicular to the projection on the plane of high-pressure water jet shower nozzle 11 axis.
Wherein: for having coal and gas outburst danger or the coal seam of boring blowing phenomenon being arranged, establish sealing of hole steel pipe 14 at waterpower reaming 13 open sections of holing, between sealing of hole steel pipe 14 and waterpower reaming boring 13, inject sealing material 9, and boring blowout hookup 7 is installed, the extraction termination mine gas extraction system pipeline 8 of boring blowout hookup 7 in waterpower reaming 13 apertures of holing.
Wherein: the high pressure rotary water jet nozzle 12 of built-in guide vane wheel 16 is installed on the nozzle base 17.High pressure rotary water jet nozzle 12 diameters are 1.8mm.
Wherein: the connection between being connected between being connected between high-pressure water jet shower nozzle 11 and the high-pressure water jet drilling rod 6, swinging chicksan 3 and the high-pressure water jet drilling rod 6, the high-pressure water jet drilling rod 6, all adopt the mode that is tightly connected of built-in crush seal and compound gasket, swinging chicksan 3 comprises axis of rotation, high-pressure seal ring and the external shell of hollow, and the junction adopts the rotatory sealing mode to seal.
Introduce the utility model operating principle for the ease of understanding in conjunction with the 3rd embodiment: Hole 13 to desired location with rig 5 to the 10 construction waterpower reamings of the coal seam of pre-exploitation, withdraw from drilling rod.Establish sealing of hole steel pipe 14 at waterpower reaming 13 open sections of holing, between sealing of hole steel pipe 14 and waterpower reaming boring 13, inject sealing material 9 cement mortar, and at aperture installation boring blowout hookup 7, the extraction termination mine gas extraction system pipeline 8 of boring blowout hookup 7, open the gas pumping system, connect high-pressure rubber pipe 4 with snap joint, and high-pressure rubber pipe 4 is connected to swinging chicksan 3, the other end of swinging chicksan 3 is connected with high-pressure water jet drilling rod 6, the front end of high-pressure water jet drilling rod 6 is installed the high-pressure water jet shower nozzle 11 of having installed high pressure rotary water jet nozzle 12, at the bottom of driving high-pressure water jet drilling rods 6 high-pressure water jet shower nozzle 11 is delivered to the hole with rig 5, start high-pressure hydraulic pumping plant 1, after treating that high-pressure water jet generation systems pressure reaches scheduled pressure value 28MPa, import water under high pressures by high-pressure water jet drilling rod 6 to high-pressure water jet shower nozzle 11, high-pressure water jet drilling rod 6 can bear the high pressure of 50MPa and not reveal, open rig 5, drive 6 rotations of high-pressure water jet drilling rod, high-pressure water jet drilling rod 6 is slowly moved back and forth in waterpower reaming boring 13, utilization pressure is 28MPa in waterpower reaming boring 13, flow is that the water under high pressure of 160L/min carries out reaming by high pressure rotary water jet nozzle 12 generation high-pressure water jets to coal seam 10, ickings flow in the reaming process is 5~25kg/min, bore diameter has expanded 448~1042mm to, average out to 587mm.In waterpower reaming process, come the scope of keyhole reaming section by changing the hole length of 13 inner high voltage water jet drilling rods 6 of waterpower reaming.After the rotating fluid reaming finishes, close the high-pressure water jet generation systems, the removal system pressure is progressively pulled out high-pressure water jet drilling rod 6 by rig 5 drivings, finishes the ream operation of waterpower reaming boring 13.