CN203394365U - Double-tube type drill pipe - Google Patents
Double-tube type drill pipe Download PDFInfo
- Publication number
- CN203394365U CN203394365U CN201320492623.6U CN201320492623U CN203394365U CN 203394365 U CN203394365 U CN 203394365U CN 201320492623 U CN201320492623 U CN 201320492623U CN 203394365 U CN203394365 U CN 203394365U
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- China
- Prior art keywords
- tube body
- drill pipe
- outer tube
- double
- diameter
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- Expired - Fee Related
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Abstract
The utility model relates to components of construction equipment of coal mine drilling, particularly to a double-tube type drill pipe. The double-tube type drill pipe comprises an outer tube body made of seamless steel tube materials, two ends of the outer tube body are connected with a pin connector and a box connector respectively, an equal-diameter inner tube body is arranged in the center of the outer tube body, and two ends of the inner hole of the inner tube body are in equal-diameter connection with the pin connector and the box connector. According to the double-tube type drill pipe, by means of the inner tube body arranged inside the outer tube body, the main body of the inner hole of the whole drill pipe is of an equal-diameter structure, loss of liquid supply pressure of a drilled hole cannot be reduced, the requirements for liquid supply equipment and drill pipes are reduced, the costs are reduced, the smooth equal-diameter inner hole also enables a large-diameter gas detector tube to pass through smoothly, the difficulty of detection is reduced and the accuracy of detection is improved.
Description
Technical field
The utility model relates to colliery drilling operation part of appliance, specifically a kind of double hose drilling rod.
Background technology
Gas accident is one of principal element threatening Safety of Coal Mine Production.Therefore, further improve the safety assurance ability in colliery, the efficiency that especially draws out methane and monitoring are very important.At present, in down-hole drilling process, Predicting Gas and methane drawing are main or for prediction and the extraction in aperture, owing to affecting the factor complexity of pore-forming, after drilling rod is extracted out, easy especially collapse hole, usually can not carry out Measurement accuracy and the methane drawing of gas density, drilling efficiency is not high.Thereby because detectable concentration is inaccurate and the deficiency of gas drainage amount, cause potential safety hazard.If utilize the drilling rod of hollow to penetrate detector tube before drilling rod is extracted out, detect, the diameter due to drilling rod and blank area existence changes, and make detector tube be difficult to pass through smoothly drilling rod, thereby operation easier is larger.
In addition, when bit part needs the bore liquid of certain pressure for seasonable, because the drill pipe bore reducing quantity of liquid process is more, build-up of pressure loss is larger, therefore need to improve liquid supply pressure, requirement to equipment and drilling rod all increases, thereby has improved equipment cost, reduced operational reliability.
Utility model content
Technical problem to be solved in the utility model is that a kind of be convenient to carry out gas detection, little, reliable, low to the operational outfit requirement double hose drilling rod of boring liquid supply pressure loss are provided.
Double hose drilling rod of the present utility model includes the outer tube body of a seamless steel pipe material, outer tube body two ends are connected with respectively male joint and box joint, described outer tube body center is provided with an isodiametric interior tube body, and the endoporus two ends of interior tube body are respectively with male joint with box joint is isometrical is connected.
Between described interior tube body outer wall and outer tube body inwall, pass through several support ring fixed supports.
Described interior tube body is stainless steel tube material.
The utility model is by being arranged on the interior tube body in outer tube body, the endoporus main body that makes whole drilling rod is to wait gauge structure, not only can not reduce the loss of boring liquid supply pressure, the requirement of reduction to liquid supply equipment and drilling rod, reduce costs, and smooth, isometrical endoporus also can make large diameter gas detector tube pass through smoothly, reduced the difficulty that detects operation, improved the accuracy detecting.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
As shown in the figure, this double hose drilling rod includes the outer tube body 1 of a seamless steel pipe material, outer tube body two ends are connected with respectively male joint 2 and box joint 3, described outer tube body center is provided with an isodiametric interior tube body 4, and the endoporus two ends of interior tube body are respectively with male joint with box joint is isometrical is connected.Between interior tube body 4 outer walls and outer tube body 1 inwall, pass through several support ring 5 fixed supports.Interior tube body 4 is stainless steel tube material.
Claims (3)
1. a double hose drilling rod, include the outer tube body (1) of a seamless steel pipe material, outer tube body two ends are connected with respectively male joint (2) and box joint (3), it is characterized in that: described outer tube body center is provided with an isodiametric interior tube body (4), the endoporus two ends of interior tube body are respectively with male joint with box joint is isometrical is connected.
2. double hose drilling rod according to claim 1, is characterized in that: between interior tube body (4) outer wall and outer tube body (1) inwall, pass through several support rings (5) fixed support.
3. double hose drilling rod according to claim 1 and 2, is characterized in that: interior tube body (4) is stainless steel tube material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492623.6U CN203394365U (en) | 2013-08-13 | 2013-08-13 | Double-tube type drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492623.6U CN203394365U (en) | 2013-08-13 | 2013-08-13 | Double-tube type drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394365U true CN203394365U (en) | 2014-01-15 |
Family
ID=49905901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320492623.6U Expired - Fee Related CN203394365U (en) | 2013-08-13 | 2013-08-13 | Double-tube type drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410450A (en) * | 2013-08-13 | 2013-11-27 | 镇江安达煤矿专用设备有限公司 | Double-tubular drill rod |
-
2013
- 2013-08-13 CN CN201320492623.6U patent/CN203394365U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410450A (en) * | 2013-08-13 | 2013-11-27 | 镇江安达煤矿专用设备有限公司 | Double-tubular drill rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20160813 |