CN101514609A - Spiral drill pipe with T-shaped blade - Google Patents
Spiral drill pipe with T-shaped blade Download PDFInfo
- Publication number
- CN101514609A CN101514609A CNA2009100218354A CN200910021835A CN101514609A CN 101514609 A CN101514609 A CN 101514609A CN A2009100218354 A CNA2009100218354 A CN A2009100218354A CN 200910021835 A CN200910021835 A CN 200910021835A CN 101514609 A CN101514609 A CN 101514609A
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- blade
- spiral
- drilling
- joint
- female joint
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Abstract
The invention relates to a spiral drill pipe with a T-shaped blade. In the prior art, when spiral drilling is carried out on fluffy outburst coal seam mines, the used spiral drill pipe blade is rectangular. When drilling, the inner wall of a borehole is easily scratched by the rectangular blade (vane), thus leading to unstable drilling and pore-forming and low relative drilling efficiency. The invention comprises a male joint, a middle pole, a female joint and a spiral blade; wherein, the male joint, the middle pole and the female joint are arranged from top to bottom in sequence to form an externally flat core bar; the outer wall of the externally flat core bar is provided with the spiral blade; the cross section of the spiral blade is of T shape and both sides of T are provided with inverted taper angles. When the spiral drill pipe drills, the T part of the blade supports the inner wall of the borehole, thus reducing the rescraping effect of blade on the drilled wall, improving the stability of drilling and pore-forming and drilling efficiency and adapting to the requirement of spiral drilling process.
Description
Technical field
The present invention relates to a kind of drilling rod that soft projecting coal bed spiral creeps into that is used for, be specifically related to a kind of T shaped blade auger stem.
Technical background
In the prior art, the spiral drilling technology is one of effective means that solves soft projecting coal bed gas pumping, and it has advantages such as drilling efficiency height, environmental pollution are little.
At present, carry out spiral when creeping at soft projecting coal bed mine, the auger stem blade that uses is rectangular paddle.In the drilling process, rectangular paddle is scraping boring inwall periodically, causes the Completion of Drilling Hole instability, and overall drilling efficiency is low.
Summary of the invention
The object of the present invention is to provide a kind of T shaped blade auger stem, when creeping into, can reduce the scraping effect of helical blade, improve the auger shot borehole and become porosity and drilling efficiency the boring inwall.
For achieving the above object, the technical solution used in the present invention is:
Special character of the present invention is: described T shaped blade auger stem comprises male joint, intermediate bar, female joint, helical blade; Described male joint, intermediate bar and female joint set gradually from top to bottom and constitute outer flat core bar, and described outer flat core bar outer wall is provided with helical blade, and the cross sectional shape of helical blade is " T " word shape, and wedge angle is removed in the setting of " T " word both sides.
Above-mentioned helical blade is a continuous hurricane band, and is welded on continuously on the outer flat core bar of being made up of male joint, intermediate bar and female joint.
The above-mentioned male joint and the connected mode of female joint are screw connected or the latch interconnection system.
Above-mentioned male joint and the friction welding of female joint difference are at the two ends of intermediate bar.
Above-mentioned male joint, intermediate bar are consistent with the outside dimension of the outer flat core bar that female joint is formed.
The present invention is with respect to prior art, and its advantage is as follows:
The cross sectional shape of drilling rod helical blade is the T word shape, when creeping into, helical blade supporting boring inwall reduces the scraping effect of helical blade to the boring inwall, improve the auger shot borehole and become porosity and drilling efficiency, adapt to the requirement of soft projecting coal bed spiral drilling process.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention;
Fig. 2 is a helical blade schematic cross-section of the present invention.
The specific embodiment
Drilling rod of the present invention is used for soft projecting coal bed spiral and creeps into drilling rod, is made of male joint 1, intermediate bar 2, female joint 3 and helical blade 4, and helical blade 4 is welded on the outer flat core bar of being made up of male joint 1, intermediate bar 2 and female joint 3; Connected mode between male joint 1 and the female joint 3 is screw-type or bolt-type.
The cross sectional shape of helical blade 4 is the T word shape, and " T " word wedge angle of leaning now to one side, then to the other, for supporting boring inwall provides technical guarantee.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1, T shaped blade auger stem is characterized in that: described T shaped blade auger stem comprises male joint (1), intermediate bar (2), female joint (3), helical blade (4); Described male joint (1), intermediate bar (2) and female joint (3) set gradually from top to bottom and constitute outer flat core bar, described outer flat core bar outer wall is provided with helical blade (4), the cross sectional shape of helical blade (4) is " T " word shape, and wedge angle is removed in the setting of " T " word both sides.
2, T shaped blade auger stem according to claim 1, it is characterized in that: described helical blade (4) is a continuous hurricane band, and is welded on continuously on the outer flat core bar of being made up of male joint (1), intermediate bar (2), female joint (3).
3, T shaped blade auger stem according to claim 1 and 2 is characterized in that: described male joint (1) is screw connected or the latch interconnection system with the connected mode of female joint (3).
4, T shaped blade auger stem according to claim 3 is characterized in that: described male joint (1) and the two ends of female joint (3) difference friction welding in intermediate bar (2).
5, T shaped blade auger stem according to claim 3 is characterized in that: the outside dimension unanimity of the outer flat core bar that described male joint (1), intermediate bar (2), female joint (3) are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100218354A CN101514609A (en) | 2009-04-03 | 2009-04-03 | Spiral drill pipe with T-shaped blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100218354A CN101514609A (en) | 2009-04-03 | 2009-04-03 | Spiral drill pipe with T-shaped blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101514609A true CN101514609A (en) | 2009-08-26 |
Family
ID=41039214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100218354A Pending CN101514609A (en) | 2009-04-03 | 2009-04-03 | Spiral drill pipe with T-shaped blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101514609A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806164A (en) * | 2015-04-14 | 2015-07-29 | 河南理工大学 | Drilling method used for rotary cutting and resistance reducing protection hole of soft coal layer and drilling rod |
| CN105401893A (en) * | 2014-09-12 | 2016-03-16 | 王永龙 | Pressure-relief and hole-protection drill pipe for soft coal and rock drilling |
-
2009
- 2009-04-03 CN CNA2009100218354A patent/CN101514609A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401893A (en) * | 2014-09-12 | 2016-03-16 | 王永龙 | Pressure-relief and hole-protection drill pipe for soft coal and rock drilling |
| CN105401893B (en) * | 2014-09-12 | 2018-08-17 | 王永龙 | Release guard aperture drilling rod is crept into for cherry coal rock |
| CN104806164A (en) * | 2015-04-14 | 2015-07-29 | 河南理工大学 | Drilling method used for rotary cutting and resistance reducing protection hole of soft coal layer and drilling rod |
| CN104806164B (en) * | 2015-04-14 | 2017-04-12 | 河南理工大学 | Drilling method used for rotary cutting and resistance reducing protection hole of soft coal layer and drilling rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090826 |