CN203271600U - Triangular-prism-shaped drill pipe - Google Patents
Triangular-prism-shaped drill pipe Download PDFInfo
- Publication number
- CN203271600U CN203271600U CN 201320120721 CN201320120721U CN203271600U CN 203271600 U CN203271600 U CN 203271600U CN 201320120721 CN201320120721 CN 201320120721 CN 201320120721 U CN201320120721 U CN 201320120721U CN 203271600 U CN203271600 U CN 203271600U
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- China
- Prior art keywords
- prism
- triangular
- drill pipe
- triangular prism
- shaped
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a triangular-prism-shaped drill pipe, which comprises a drill pipe body, the drill pipe body is a hollow triangular prism, edges of the triangular prism are circular-arc-shaped, and the annular outer wall of the triangular prism is provided with a cemented carbide layer. The triangular-prism-shaped drill pipe disclosed by the utility model is simple in structure and reasonable in design, coal slag can be smoothly discharged under the action of high-pressure wind and water, drill holes are good in forming and are not easy to collapse, and the slag discharging speed is high; the triangular-prism-shaped drill pipe can be widely applied to drilling holes in underground coalmines for gas drainage, drilling operation for water detection and water release, in particular drilling operation in soft coal seams under soft geological conditions.
Description
Technical field:
The utility model relates generally to the drilling hole for underground gas drainage in coal mine technical field, relates in particular to a kind of Three-edged drill stem.
Background technology:
Drilling rod in prior art is mainly round drill rod (imitative English drilling rod) and twist drill rods.These two kinds of drilling rods in use often the phenomenon that cinder can not be discharged smoothly can occur, and the pore volume that gets out cave in easily.
The utility model content:
The utility model purpose is exactly in order to make up the defective of prior art, a kind of Three-edged drill stem to be provided, and the hole that it gets out is difficult for caving in and cinder can be discharged smoothly.
The utility model is achieved through the following technical solutions:
A kind of Three-edged drill stem is characterized in that: include drilling rod, drilling rod is the triangular prism of hollow, and the corner angle of triangular prism are arc chord angle, and the annular outer wall of triangular prism is provided with hard alloy layer.
A kind of Three-edged drill stem is characterized in that: the annular inner wall of described triangular prism is provided with some ash pits.
The utility model is in the distinctive mode that is in transmission connection, in drilling process, cinder is formed effective stirring like this, can deposit buildup, make cinder can discharge smoothly under the effect of high-pressure blast and water, secondly in drilling rod drilling well motion process, due to the poor effect in rotation footpath, form when rotated drill hole wall is constantly impacted and extruding, hole wall is reinforced, and makes the hole forming that bores good, be difficult for caving in, thereby greatly reduce the stick of tool that causes because of collapse hole and the phenomenon of drilling rod locking.Thereby bit speed is fast, and efficient is high.
Described hard alloy layer has strengthened intensity of the present utility model, and the design of described ash pit has increased bed drain purge of the present utility model, thereby has accelerated deslagging speed.
The utility model has the advantages that:
The utility model is simple in structure, reasonable in design, cinder can be discharged under the effect of high-pressure blast and water smoothly, and the hole forming that bores is good, be difficult for caving in, deslagging speed is fast, can be widely used in drilling hole for underground gas drainage in coal mine, the spy bore operation that discharges water is specially adapted to the bore operation of weak seam under the soft geology condition.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
Referring to accompanying drawing.
A kind of Three-edged drill stem includes drilling rod 1, and drilling rod 1 is the triangular prism of hollow, and the corner angle of triangular prism are arc chord angle 2, and the annular outer wall of triangular prism is provided with hard alloy layer 3.
The annular inner wall of triangular prism is provided with some ash pits 4.
Claims (2)
1. Three-edged drill stem, it is characterized in that: include drilling rod, drilling rod is the triangular prism of hollow, and the corner angle of triangular prism are arc chord angle, and the annular outer wall of triangular prism is provided with hard alloy layer.
2. a kind of Three-edged drill stem according to claim 1, it is characterized in that: the annular inner wall of described triangular prism is provided with some ash pits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120721 CN203271600U (en) | 2013-03-16 | 2013-03-16 | Triangular-prism-shaped drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320120721 CN203271600U (en) | 2013-03-16 | 2013-03-16 | Triangular-prism-shaped drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203271600U true CN203271600U (en) | 2013-11-06 |
Family
ID=49502038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320120721 Expired - Lifetime CN203271600U (en) | 2013-03-16 | 2013-03-16 | Triangular-prism-shaped drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203271600U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113987A (en) * | 2015-07-08 | 2015-12-02 | 中煤科工集团西安研究院有限公司 | Soft-hard interbedding coal seam bedding measurement while drilling (MWD) orientation drilling equipment and construction method thereof |
-
2013
- 2013-03-16 CN CN 201320120721 patent/CN203271600U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113987A (en) * | 2015-07-08 | 2015-12-02 | 中煤科工集团西安研究院有限公司 | Soft-hard interbedding coal seam bedding measurement while drilling (MWD) orientation drilling equipment and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
|
| CX01 | Expiry of patent term |