CN203463013U - Tricone bit - Google Patents
Tricone bit Download PDFInfo
- Publication number
- CN203463013U CN203463013U CN201320469144.2U CN201320469144U CN203463013U CN 203463013 U CN203463013 U CN 203463013U CN 201320469144 U CN201320469144 U CN 201320469144U CN 203463013 U CN203463013 U CN 203463013U
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- bit
- tricone
- main body
- oil storage
- leg
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Abstract
The utility model relates to the technical field of well drilling tools, particularly to a tricone bit. The tricone bit comprises a bit main body and a bit cone leg which is arranged on the bit main body; a bit cone is arranged on the bit cone leg; the back of the bit cone leg is provided with an oil storage compensation pressure balance system; the middle of the bit main body is provided with a center water hole; one end of the center water hole, which is close to the bit cone, is provided with a replaceable alloy nozzle. An alloy nozzle holder which is arranged in the center water hole of the tricone bit is convenient to machine, the alloy nozzle is convenient to replace, the different diameters of alloy nozzles can be replaced according to the working conditions, and accordingly workers can perform well drilling well by utilizing the water power of the drilling fluid; the space of a rising rock debris flow channel which is formed by machining is sufficient and accordingly rock debris can rise and the mechanical drilling speed can be improved; the oil storage compensation pressure balance system is arranged on the back side of the bit cone leg and accordingly the distance to a bearing is small and the grease compensation is timely and meanwhile an oil storage compensation pressure balance and bearing sealing system is integral and effective and accordingly the service life of the tricone bit can be greatly extended.
Description
Technical field
The utility model relates to drilling tool technical field, relates in particular to a kind of tricone bit.
Background technology
Rock bit is the fields such as a kind of instrument of fractured rock in the earth's crust, extensive use and oil, gas drilling and other mining probings.Further exploitation along with petroleum resources, the minable oil well quantity of conventional drilling is fewer and feweri, the difficulty of exploitation is increasing, adopt the oil well of unconventional drilling well exploitation more and more, directional well, inclined shaft, extended reach well, horizontal well, the special wells such as Multilateral Wells shared ratio in oil exploitation is increasing, thereby use the chance more time of mud motor longer, the combined drilling mode that is added turntable rotation by power drilling tool obtains using more and more widely, its feature is exactly that drill speed is enhanced, surpassed the 2-3 of former rotary drilling doubly, reach 250-300 rev/min.Based on this, require modern tricone bit must under high rotating speed, keep the long life-span, the number of times making a trip to reduce drilling well, reduces non-drilling time, improves drilling efficiency and reduces drilling cost.
The form of structure (seeing accompanying drawing 9) that current three bit leg assembly weldings are shaped.For small-sized microminiature tricone bit (diameter is less than the tricone bit of Φ 92.072mm), manufacture and have following shortcoming:
When current tricone bit forms structure for small-sized microminiature tricone bit, facts have proved when bit leg is manufactured due to the relevant position size that must emphasis meets bit leg head axle journal, this just must ignore bit leg tail position size, the drill bit endoporus fluid passage after the shaping of bit leg assembly weldings is irregular or diameter is too small so just to cause three, thereby affects drilling liquid water power effect.Or assembly welding is shaped, and rear drill bit endoporus fluid passage is irregular or diameter is excessive, thereby affect drill bit, connects screw strength, does not go out drill bit even at all connect screw thread with regard to car.Moreover due to assembly welding be shaped after drill bit endoporus fluid passage irregular, drilling fluid fluid by time produce eddy current, not only affect drilling liquid water power, when serious, can cause the local puncture of drill bit inner chamber, down-hole accident is scrapped or occurred to drill bit in advance.Tricone bit structure is used for small-sized microminiature tricone bit Shi， manufacturing center water hole and alloy nozzle seat complex procedures, processing difficulties at present simultaneously.
Because the relative major diameter tricone bit of small-sized microminiature tricone bit demand quantity on Vehicles Collected from Market is few, current tricone bit structure must be manufactured bit leg blank, cost height is long in time limit, and bit leg blank shape is very complicated, set up production line not only expensive, and can not guarantee product component manufacture accuracy.Thereby cause the high situation of small-sized microminiature tricone bit unit price, because the complicated cost of manufacturing process is high, small-sized microminiature tricone bit user orders a greater number manufacturer at every turn and could manufacture, and forces user to overstock a large sum of circulating fund again.
Utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and a kind of tricone bit is provided, and is convenient to manufacture, with low cost.
The utility model for achieving the above object, by the following technical solutions: a kind of tricone bit, comprise drill main body, be installed on the bit leg on described drill main body, bit cone is arranged in described bit leg, it is characterized in that: the palm back of described bit leg is provided with oil storage compensation pressure balancing system, the middle part of described drill main body is provided with water hole, center, and water hole, described center is provided with changeable type alloy nozzle near one end of described bit cone.
Preferably, described oil storage compensation pressure balancing system mainly consists of the oil sac, gland, the back-up ring that are arranged on successively in oil storage compensation pressure compensation opening.
Preferably, the ring week of described drill main body with on return landwaste runner and bit leg mounting groove, in described bit leg mounting groove with bit leg mounting groove bevel for welding and bit leg mounting-positioning holes.
The beneficial effects of the utility model are: the drill main body in the utility model, with after forging and stamping round steel car system, carries out material heat treatment, and then on a processing center machine tool, once clamping completes all processing.All profiles and position dimension precision have been guaranteed;
Bit leg Application in manufacture Unibody (integral forming process) and CAM (computer-aided manufacturing), and the unified technological means such as location of processing of a set of simple frock, need not set up expensive complicated production line, few just can guarantee both quality and quantity man-hour complete processing and manufacturing;
All component can be saved and manufacture blank cost, simplified processing process, reduction difficulty of processing, shorten the manufacturing cycle with the manufacture of forging and stamping round steel, and user orders on a small quantity, and manufacture side also can produce;
Alloy nozzle seat processing in water hole, tricone bit center is easy, alloy nozzle is changed convenient, the alloy nozzle of changing different-diameter according to operating mode can better utilize the drilling well of drilling liquid water power, machine form on to return landwaste flow channel space abundant, be conducive to return on landwaste raising rate of penetration;
The design of oil storage compensation pressure balancing system is at palm back, more timely from the compensation of bearing near distance grease, and has complete effective oil storage compensation pressure balance and bearing seal system, can significantly improve drilling life of bit;
Simplified processing technology and operation, having saved a large amount of artificial, equipment, cutlery and other expenditure is to have increased economic benefit, and the tricone bit of this structure can be done very littlely simultaneously, and development space is large.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional drawing of A-A direction in Fig. 1;
Fig. 3 is the structural representation of oil storage compensation pressure balancing system in the utility model;
Fig. 4 is the structural representation of drill main body in the utility model;
Fig. 5 is the lateral view of Fig. 4;
Fig. 6 is the stereogram of drill main body in the utility model;
Fig. 7 is the structural representation of bit leg in the utility model;
Fig. 8 is the stereogram of bit leg in the utility model;
Fig. 9 is the structural representation of tricone bit in prior art.
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment, describe the specific embodiment of the present utility model in detail.As shown in Figures 1 to 8: a kind of tricone bit comprise drill main body 1, bit leg 2, bit cone 3, oil storage compensation pressure balancing system 4, water hole, center 5, alloy nozzle 6, on return landwaste passage 7.Wherein, the pressure balance of tricone bit oil storage compensation and bearing seal system mainly contain following form of structure composition gland 8, oil sac 9, back-up ring 10, oil filler point 11, long oil hole 12, plug pin Kong13, center oilhole 14, macro-axis oilhole 15, bearing sealed ring 17 formations; Drill main body, mainly by following structure composition form, above returns landwaste runner 7, water hole, bit leg mounting groove 22, center 5, bit leg mounting groove bevel for welding 23, bit leg mounting-positioning holes 24 compositions; Bit leg mainly contains following structure composition form bit leg mounting-positioning holes 25, teeth palm bearing macro-axis 26, teeth palm bearing and stops heap face 27, the little axle 28 of teeth palm bearing, bit leg macro-axis stress surface welding alloy layer 29, bit leg thrust surface welding alloy layer 30, palm back of the body welding alloy layer 31, assembly welding groove 32 and form.
Installation steps:
Second step: with alignment pin 21, the group of bit leg 2 and bit cone 3 and body and drill main body 1 are fixed, both are welded together.
The 3rd step: oil storage compensation pressure balancing system assembly oil sac 9, gland 8, back-up ring 10 are installed.
The 4th step: after having vacuumized, give in oil storage compensation pressure balancing system 4 and inject grease, finally use plug sealed oil-filling hole 11.
The 5th step: return landwaste flow path groove 7 in clamping and connect screw thread with its positioning car drill bit, just produce complete small-sized microminiature tricone bit product.
Operating principle: during drill bit work, drilling liquid flow, through water hole, center 5, enters alloy nozzle 6, forms pressure reduction between alloy nozzle entrance and exit, improves hydrodynamic force effect and washes away shaft bottom and clean gear wheel and lubricated drill bit.The landwaste subsequently drill bit work being produced returns landwaste runner 7 from drill bit and takes pit shaft out of.
After the drilling fluid of pressurization enters in pit shaft, pressure enters annular space outside oil sac by drilling fluid through gland pressure transmission hole 16, grease fat body in extruding oil sac, grease fat body is through long oil hole 12 plug pin Kong13 center oilholes 14) macro-axis oilhole 15 flows into the width that respectively rubs in bearings, for friction width provides the lubricated frictional force that reduces, thereby improve the cone bit bearing life-span.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. a tricone bit, comprise drill main body, be installed on the bit leg on described drill main body, bit cone is arranged in described bit leg, it is characterized in that: the palm back of described bit leg is provided with oil storage compensation pressure balancing system, the middle part of described drill main body is provided with water hole, center, and water hole, described center is provided with changeable type alloy nozzle near one end of described bit cone.
2. tricone bit according to claim 1, is characterized in that: described oil storage compensation pressure balancing system mainly consists of the oil sac, gland, the back-up ring that are arranged on successively in oil storage compensation pressure compensation opening.
3. tricone bit according to claim 2, is characterized in that: the ring week of described drill main body with on return landwaste runner and bit leg mounting groove, in described bit leg mounting groove with bit leg mounting groove bevel for welding and bit leg mounting-positioning holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320469144.2U CN203463013U (en) | 2013-07-31 | 2013-07-31 | Tricone bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320469144.2U CN203463013U (en) | 2013-07-31 | 2013-07-31 | Tricone bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463013U true CN203463013U (en) | 2014-03-05 |
Family
ID=50175385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320469144.2U Expired - Fee Related CN203463013U (en) | 2013-07-31 | 2013-07-31 | Tricone bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463013U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939023A (en) * | 2014-04-30 | 2014-07-23 | 天津立林钻头有限公司 | Roller bit, tool for installing roller bit check ring and installing method of check ring |
| EP3282083A1 (en) | 2016-08-09 | 2018-02-14 | Varel International, Ind., L.P. | Durable rock bit for blast hole drilling |
-
2013
- 2013-07-31 CN CN201320469144.2U patent/CN203463013U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939023A (en) * | 2014-04-30 | 2014-07-23 | 天津立林钻头有限公司 | Roller bit, tool for installing roller bit check ring and installing method of check ring |
| EP3282083A1 (en) | 2016-08-09 | 2018-02-14 | Varel International, Ind., L.P. | Durable rock bit for blast hole drilling |
| US10364610B2 (en) | 2016-08-09 | 2019-07-30 | Varel International Ind., L.P. | Durable rock bit for blast hole drilling |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20210731 |