CN208137855U - Become water pressure pulse and controls drilling tool - Google Patents
Become water pressure pulse and controls drilling tool Download PDFInfo
- Publication number
- CN208137855U CN208137855U CN201820530895.3U CN201820530895U CN208137855U CN 208137855 U CN208137855 U CN 208137855U CN 201820530895 U CN201820530895 U CN 201820530895U CN 208137855 U CN208137855 U CN 208137855U
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- drilling
- drilling rod
- telescopic sleeve
- support
- pin shaft
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Abstract
The utility model discloses a kind of change water pressure pulses to control drilling tool, is connected with telescopic sleeve in the rear end of drilling rod, and the telescopic sleeve movable set is on the inside of drilling rod front end；The periphery of telescopic sleeve is provided with dynamic support, is provided in drilling rod front end and determines support, is hinged on dynamic support by pin shaft and bores piece supporter, auxiliary support bar is hinged with by pin shaft on determining support；Tension spring is connected between every group of brill piece supporter and auxiliary support bar；Meanwhile be provided in the telescopic sleeve inner cavity card slot and fix have water-ring.The diameter changing drilling tool that variable diameter movement is realized in driving can be realized in the utility model by way of changing high water pressure size, and then increases the gas permeability and relief range of drilling surrounding medium, improves the gas drainage under suction effect and protrusion-dispelling effect of coal bed drilling.
Description
Technical field：
The utility model belongs to coal mine drilling tool technical field, and in particular to a kind of change water pressure pulse control drilling tool.
Background technique：
In coal mine gas drainage work, the drilling in coal seam is needed, when coal is soft, crustal stress is higher or is adopted
It influencing, drilling will appear the different degrees of hole phenomenon that collapses, and it can not be taken out in hole by drill bit is stuck, not only delay production, but also
Cause unnecessary economic loss, reaming bit type is less at present, have a single function, can only the reaming when piercing, due to drill bit
Section diameter cannot change, and when leg bores, the problem of meeting bit freezing, can only be taken out by way of extracting by force, and
It cannot be guaranteed successfully, another reaming bit is that blade is opened when moving back brill, expands bore diameter, but due to apply twice back and forth
Work, working efficiency are low.
In order to solve conventional mechanical drilling machine construction concordant drilling hardly possible and layer-through drilling in China's high-ground stress, weak seam
The small problem in coal seam section aperture realizes the purpose of coal seam concordant drilling implementation synchronous with reaming and layer-through drilling reaming, existing
There is also coal seam high pressure water jet drilling reaming systems in technology comprising high-pressure water jet generating system, drilling machine, drill rod boring tool system
System, high-pressure water jet generating system include the water tank, high-pressure hydraulic pump, high-pressure rubber pipe being sequentially connected, and drilling machine includes drilling machine manipulation
Platform and drilling machine ontology, drill rod boring tool system include high-pressure rotary sealing device, high pressure sealing drilling rod, have High pressure water jet nozzle
Jet stream machinery blade group close tower type drill bit, by high-pressure water jet to the circumgyration incision and mechanical blade of bottom hole and hole wall coal body
Cutting and grinding synergy realize the drilling and reaming in coal seam hole, can be effectively avoided bit freezing during coal bed drilling and
Stick of tool phenomenon forms the long drilled holes of large aperture in high-ground stress, weak seam, increases the gas permeability of drilling surrounding medium and unloads
Range is pressed, the gas drainage under suction effect and protrusion-dispelling effect of coal bed drilling are improved.But in practical applications, which only pays attention to
Axial, radial, oblique forward direction jet stream strike, broken and wet, the bulk occurred in boring procedure are carried out to drilling surrounding medium
Although cinder can be ground difference, with the increase of depth of pore forming, a large amount of cinder accumulation drillings cause deslagging unsmooth, so that
Completion of Drilling Hole depth is limited, greatly limits its application.
Utility model content：
For defect and problem existing for the ordinary high pressure water jet drilling tool in coal mine field is currently used for, the utility model is mentioned
For a kind of diameter changing drilling tool that driving can be realized by way of changing high water pressure and realize variable diameter movement, and then increase drilling week
The gas permeability and relief range for enclosing coal body improve the gas drainage under suction effect and protrusion-dispelling effect of coal bed drilling.
The utility model solves scheme used by its technical problem：A kind of change water pressure pulse control drilling tool, including bore
Bar and drill bit are connected with telescopic sleeve in the rear end of drilling rod, and the telescopic sleeve movable set is on the inside of drilling rod front end；In telescopic
It has been uniformly arranged dynamic support on the periphery lateral wall of pipe, has been uniformly arranged on the periphery lateral wall of drilling rod front end and dynamic support pair
That answers determines support, is hinged on the dynamic support by pin shaft and bores piece supporter, brill is distributed in each leading flank for boring piece supporter
Piece is determined to be hinged with auxiliary support bar by pin shaft on support described, and it is hinged that the end of each auxiliary support bar passes through pin shaft respectively
On rear side of corresponding brill piece supporter；Tension spring is connected between every group of brill piece supporter and auxiliary support bar；Meanwhile described
Being provided with card slot in telescopic sleeve inner cavity and fixing has water-ring, which is provided centrally with water hole.
The bit central of drilling rod front end is provided with wealthy mouth, is connected with seal swivel joint positioned at drilling rod rear end, and it is close
The end for sealing the pipeline of rotary joint connection connects variable frequency pump, and the control terminal of variable frequency pump connects controller.
The beneficial effects of the utility model：1. drive can be realized by way of changing high water pressure size in the utility model
The dynamic diameter changing drilling tool for realizing variable diameter movement, and then increase the gas permeability and relief range of drilling surrounding medium, improve coal bed drilling
Gas drainage under suction effect and protrusion-dispelling effect.Changing high-pressure water pressure size both can also pass through control by artificially controlling
Device carries out regular control to variable frequency pump.
2. the utility model just can control the variable diameter function of frameholst part, variable diameter side easy to operate by controlling hydraulic pressure
Just, it is easy to control, structure is simply easy to accomplish.
Detailed description of the invention
Fig. 1 is that the utility model drilling tool is in folded state schematic diagram when bearing high pressure water impact.
Fig. 2 is that the utility model drilling tool is in unfolded state schematic diagram when bearing low pressure water slug.
Fig. 3 is the drilling machine pipe connection system schematic diagram being used in combination with the utility model drilling tool.
Fig. 4 is the structural schematic diagram of water-ring in Fig. 1.
Figure label 1 is drilling rod, and 2 be drill bit, and 3 be telescopic sleeve, and 4 be dynamic support, and 5 is determine support, and 6 be to bore piece support
Body, 7 be auxiliary support bar, and 8 be middle support, and 9 be water-ring, and 10 be water hole, and 11 be pin shaft, and 12 is bore piece, and 13 be tension spring, 14
It is chuck for rig bracket, 15,16 be positioning fixture, and 17 be seal swivel joint, and 18 be pipeline, and 19 be controller, and 20 be change
Frequency water pump.
Specific embodiment：
The present invention will be further described with reference to the accompanying drawings and examples.
Change water pressure pulse as depicted in figs. 1 and 2 controls drilling tool, is connected with telescopic sleeve 3 in the rear end of drilling rod 1, this is stretched
For 3 movable set of Heat-Shrinkable Tubings in 1 leading inside of drilling rod, the two being capable of relative telescoping movement.
Dynamic support 4 is uniformly arranged on the periphery lateral wall of telescopic sleeve 3, on the periphery lateral wall of 1 front end of drilling rod
Be uniformly arranged it is corresponding with dynamic support 4 determine support 5, move that support 4 is identical with 5 quantity of support is determined and position one-to-one correspondence, and
All it is evenly distributed on tube wall periphery.
It being hinged on dynamic support 4 by pin shaft and bores piece supporter 6, brill piece is distributed in each leading flank for boring piece supporter 6,
Auxiliary support bar 7 is hinged with by pin shaft on determining support 5 again, the end of each auxiliary support bar 7 is hinged on by pin shaft respectively
Corresponding 6 rear side of brill piece supporter.To be able to drive and bore piece branch when telescopic sleeve 3 carries out stretching motion into drilling rod 1
It is opposite between support body 6 and auxiliary support bar 7 to swing.
It is connected with tension spring 13 between every group of brill piece supporter 6 and auxiliary support bar 7, under the effect of tension spring 13, bores piece branch
Support body 6 and auxiliary support bar 7 are in confined state always, i.e. reduced diameter portion is in unfolded state always.
Meanwhile being provided in 3 inner cavity of telescopic sleeve card slot and fixing and have water-ring 9, as shown in figure 4, the water-ring 9
It is provided centrally with water hole 10.When injecting high pressure water into drilling rod 1, drive can be realized by way of changing high water pressure size
The dynamic diameter changing drilling tool for realizing variable diameter movement, and then increase the gas permeability and relief range of drilling surrounding medium, improve coal bed drilling
Gas drainage under suction effect and protrusion-dispelling effect.Changing high-pressure water pressure size both can also pass through control by artificially controlling
Device carries out regular control to variable frequency pump 20.
As shown in figure 3, the drill bit 2 for being located at 1 front end of drilling rod is provided centrally with wealthy mouth, sealing is connected with positioned at 1 rear end of drilling rod
The end of rotary joint 17, the pipeline connecting with seal swivel joint 17 connects variable frequency pump 20, the control terminal of variable frequency pump 20
Connect controller.Then the present embodiment can also increase the valve of water amount controllable using light water water supplying pump on pipeline.It is this
Valve can be the valve for manually controlling aperture, be also possible to control the electromagnetic valve of aperture by controller.
Claims (2)
1. a kind of change water pressure pulse controls drilling tool, including drilling rod and drill bit, it is characterized in that：Telescopic is connected in the rear end of drilling rod
Pipe, the telescopic sleeve movable set is on the inside of drilling rod front end；It has been uniformly arranged dynamic support on the periphery lateral wall of telescopic sleeve,
Be uniformly arranged on the periphery lateral wall of drilling rod front end it is corresponding with dynamic support determine support, pass through pin shaft on the dynamic support and cut with scissors
Be connected to and bore piece supporter, brill piece is distributed in each leading flank for boring piece supporter, it is described determine on support to be hinged with by pin shaft it is auxiliary
Support rod is helped, the end of each auxiliary support bar passes through pin shaft respectively and is hinged on rear side of corresponding brill piece supporter；In every group of brill piece
Tension spring is connected between supporter and auxiliary support bar；Meanwhile be provided in the telescopic sleeve inner cavity card slot and fix have
Water-ring, the water-ring are provided centrally with water hole.
2. change water pressure pulse according to claim 1 controls drilling tool, it is characterized in that：Bit central positioned at drilling rod front end is set
It is equipped with wealthy mouth, is connected with seal swivel joint positioned at drilling rod rear end, the end for the pipeline connecting with seal swivel joint, which connects, to be become
The control terminal of frequency water pump, variable frequency pump connects controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820530895.3U CN208137855U (en) | 2018-04-16 | 2018-04-16 | Become water pressure pulse and controls drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820530895.3U CN208137855U (en) | 2018-04-16 | 2018-04-16 | Become water pressure pulse and controls drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208137855U true CN208137855U (en) | 2018-11-23 |
Family
ID=64293632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820530895.3U Expired - Fee Related CN208137855U (en) | 2018-04-16 | 2018-04-16 | Become water pressure pulse and controls drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208137855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677448A (en) * | 2020-06-18 | 2020-09-18 | 中煤科工集团重庆研究院有限公司 | Variable-diameter casing hole-protecting drilling process for unstable stratum |
-
2018
- 2018-04-16 CN CN201820530895.3U patent/CN208137855U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677448A (en) * | 2020-06-18 | 2020-09-18 | 中煤科工集团重庆研究院有限公司 | Variable-diameter casing hole-protecting drilling process for unstable stratum |
| CN111677448B (en) * | 2020-06-18 | 2022-01-28 | 中煤科工集团重庆研究院有限公司 | Variable-diameter casing hole-protecting drilling process for unstable stratum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181123 Termination date: 20190416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |