CN1164858C - Hydraulic structure of single gear wheel drilling bit - Google Patents
Hydraulic structure of single gear wheel drilling bit Download PDFInfo
- Publication number
- CN1164858C CN1164858C CNB011066229A CN01106622A CN1164858C CN 1164858 C CN1164858 C CN 1164858C CN B011066229 A CNB011066229 A CN B011066229A CN 01106622 A CN01106622 A CN 01106622A CN 1164858 C CN1164858 C CN 1164858C
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- CN
- China
- Prior art keywords
- gear wheel
- hydrophthalmia
- hydraulic structure
- bit
- runner
- Prior art date
- 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 - Fee Related
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Abstract
The present invention relates to a hydraulic structure of a single roller bit. The hydraulic structure comprises a cone leg and a roller cone which is arranged at the lower end of the cone leg. A water supply eye flow passage and a water drainage eye flow passage are arranged in the cone leg. The centre line of the water drainage eye flow passage is positioned in the symmetrical center plane surface of the cone leg. The hydraulic structure is characterized in that the water supply eye flow passage is deflected along one side of the lower part of the cone leg, and the water supply eye flow passage forms an included angle psi with the symmetrical center plane surface of the cone leg; the value range of the included angle psi is larger than 0 degree, but is smaller than 45 degrees. The roller cone has good cleaning capability and rock breaking capability by the hydraulic structure, and thus, the drilling, chiseling and rock breaking performance of the drill bit can be effectively enhanced; the service life of the roller bit is extended; and the comprehensive well drilling cost is decreased.
Description
Technical field
The present invention relates to a kind of hydraulic structure that is used for the single-cone rotary drill bit of oil, mine and geological drilling.
Background technology
The Hydraulic Power System of single-cone rotary drill bit will play crucial auxiliary drilling effect when the Drilling broken rock.Hydrophthalmia and following hydrophthalmia in the Hydraulic Power System structure of existing single-cone rotary drill bit, have been designed, wherein descend hydrophthalmia to be positioned at the lower end of the gear wheel centre of gyration, last hydrophthalmia is arranged on the position of bit leg corresponding to the gear wheel top, plays a part to clean gear wheel, to improve the drilling performance of gear wheel.Yet, last hydrophthalmia runner and following hydrophthalmia runner in the existing hydraulic structure of single gear wheel drilling bit all are designed in the bit leg symmetrical centre plane, promptly be positioned at a plane, like this, to cause hydrophthalmia mud that ejects and the mud that following hydrophthalmia ejects to be in intersection during use, at intersecting area, because the crossing interference of jet, the injection energy of mud is weakened, this has not only reduced the cleaning of mud, rock breaking capacity, and can influence the formation of bottom-hole flow field, hinder the discharge of shaft bottom landwaste, it is broken to cause bottom rock to repeat, thereby influences the Drilling performance of rock bit.
Summary of the invention
Purpose of the present invention is intended to the deficiency that exists at above-mentioned prior art and designs a kind of hydraulic structure of single gear wheel drilling bit that good cleaning and rock breaking capacity are arranged that possesses.
Purpose of the present invention is realized by following technical scheme: comprise bit leg 1 and the gear wheel 5 that is installed in the bit leg lower end, be provided with hydrophthalmia runner 11 and following hydrophthalmia runner 10 in the bit leg, following hydrophthalmia runner center line is positioned at bit leg symmetrical centre plane 8, its difference is that hydrophthalmia runner 11 changes along bit leg below one lateral deviation, form included angle with bit leg symmetrical centre plane, the span of included angle is 0 °＜φ＜45 °.
Good effect of the present invention is: because the deflection of last hydrophthalmia runner, make, following hydrophthalmia runner is not in a plane, thereby avoided last hydrophthalmia mud that ejects and the mud that following hydrophthalmia ejects to be in crossing disturbance state, like this, the mud that hydrophthalmia is ejected can play better broken rock chip removal effect, last hydrophthalmia then can play more effective effect aspect cleaning and the cooling gear wheel, simultaneously such hydraulic structure system, the good bottom-hole flow field of also easier formation, so that the discharge of shaft bottom landwaste, thereby the broken lithology energy of the Drilling that improves drill bit effectively, and prolonged the application life of single-cone rotary drill bit, the integrated cost of drilling well descends.
Description of drawings
Fig. 1 is the stereogram of one embodiment of the invention.
Fig. 2 is the vertical view of bit leg in the one embodiment of the invention.
Fig. 3 is that bit leg is along symmetrical centre plane side cross sectional view.
Fig. 4 is the B-B sectional view among Fig. 3.
Fig. 5 is that the D-D among Fig. 2 launches sectional view.
Fig. 6 is the F-F sectional view among Fig. 3.
Fig. 7 is the elevation of one embodiment of the invention gear wheel.
The specific embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing, single-cone rotary drill bit is made of bit leg 1 and gear wheel 5, gear wheel is installed on the bit leg axle 7 of bit leg lower end (the duty gear wheel is downward), hydrophthalmia runner 11 and following hydrophthalmia runner 10 in bit leg, offering, following hydrophthalmia runner center line is positioned at bit leg symmetrical centre plane 8, following hydrophthalmia runner bends to bit leg axle place from top to bottom and the following hydrophthalmia 6 of bit leg axle lower end connects, last hydrophthalmia runner 11 is arranged on the middle part of going up of bit leg, its center line changes along bit leg below one lateral deviation, form included angle with the symmetrical centre plane of bit leg, even on, following hydrophthalmia runner is not arranged in the plane, the span of included angle is 0 °＜φ＜45 °, is generally 5 °＜φ＜30 °.The upper end of last hydrophthalmia runner and sprue 9 join, the lower end of last hydrophthalmia runner communicates with last hydrophthalmia 2, last hydrophthalmia is opened in the position of the corresponding gear wheel of bit leg top, put to a lateral deviation, make, the injection direction of following hydrophthalmia staggers mutually, tooth 4 on the spherical gear wheel 5 of oblique cleaning simultaneously, for with the performance phase configuration of the oblique cleaning gear wheel of last hydrophthalmia tooth, help to return landwaste on the chip area on the spherical gear wheel, the bottom-hole flow field of formation rule, on the excircle of spherical gear wheel 5, offer oblique chip area 3, this chip area circumferentially five equilibrium is offered, chip area with the angle γ of the parallel bus of gear wheel center line is: 0 °＜γ＜45 °, γ is 10～25 ° usually, and chip area is along the opposite direction deflection of gear wheel rotation, when gear wheel direction of rotation to the right the time, the rotation direction of chip area is a left side, and last hydrophthalmia is to lower right side deflection, to form the gear wheel hydraulic structure system of more coordinating.
Claims (8)
1, a kind of hydraulic structure of single gear wheel drilling bit, comprise bit leg (1) and be installed in the gear wheel (5) of bit leg lower end, be provided with hydrophthalmia runner (11) and following hydrophthalmia runner (10) in the bit leg, following hydrophthalmia runner center line is positioned at bit leg symmetrical centre plane (8), it is characterized in that the hydrophthalmia runner changes along bit leg below one lateral deviation, form included angle with bit leg symmetrical centre plane, the span of included angle is 0 °＜φ＜45 °.
2, by the described hydraulic structure of single gear wheel drilling bit of claim 1, it is characterized in that on the excircle of gear wheel (5), offering oblique chip area (3).
3,, it is characterized in that following hydrophthalmia runner bends to bit leg axle place and the following hydrophthalmia (6) of bit leg axle lower end connects from top to bottom by claim 1 or 2 described hydraulic structure of single gear wheel drilling bit.
4, by claim 1 or 2 described hydraulic structure of single gear wheel drilling bit, the span that it is characterized in that included angle is 5 °＜φ＜30 °.
5, by claim 1 or 2 described hydraulic structure of single gear wheel drilling bit, the upper end and the sprue that it is characterized in that the hydrophthalmia runner join, the lower end of last hydrophthalmia runner communicates with last hydrophthalmia (2), and last hydrophthalmia is opened in the position of the corresponding gear wheel of bit leg top, puts to a lateral deviation.
6, by the described hydraulic structure of single gear wheel drilling bit of claim 2, it is characterized in that chip area (3) with the angle γ of the parallel bus of gear wheel center line is: 0 °＜γ＜45 °.
7, by the described hydraulic structure of single gear wheel drilling bit of claim 6, it is characterized in that chip area (3) with the angle γ of the parallel bus of gear wheel center line is: 10～25 °.
8,, it is characterized in that the opposite direction deflection of chip area (3) along the gear wheel rotation by claim 6 or 7 described hydraulic structure of single gear wheel drilling bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011066229A CN1164858C (en) | 2001-04-13 | 2001-04-13 | Hydraulic structure of single gear wheel drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011066229A CN1164858C (en) | 2001-04-13 | 2001-04-13 | Hydraulic structure of single gear wheel drilling bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1312423A CN1312423A (en) | 2001-09-12 |
| CN1164858C true CN1164858C (en) | 2004-09-01 |
Family
ID=4655612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011066229A Expired - Fee Related CN1164858C (en) | 2001-04-13 | 2001-04-13 | Hydraulic structure of single gear wheel drilling bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1164858C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954492A (en) * | 2014-05-06 | 2014-07-30 | 何鹏 | Portable rock core cleaning machine |
| CN108360979B (en) * | 2018-05-22 | 2023-07-14 | 西南石油大学 | Split single-cone bit |
-
2001
- 2001-04-13 CN CNB011066229A patent/CN1164858C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1312423A (en) | 2001-09-12 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040901 Termination date: 20170413 |
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| CF01 | Termination of patent right due to non-payment of annual fee |