CN105927155A - Bearing sealing ring of roller bit and roller bit thereof - Google Patents
Bearing sealing ring of roller bit and roller bit thereof Download PDFInfo
- Publication number
- CN105927155A CN105927155A CN201610507175.0A CN201610507175A CN105927155A CN 105927155 A CN105927155 A CN 105927155A CN 201610507175 A CN201610507175 A CN 201610507175A CN 105927155 A CN105927155 A CN 105927155A
- Authority
- CN
- China
- Prior art keywords
- head tank
- sealing ring
- sealing
- bearing
- ring
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details
Abstract
The invention relates to the technical field of petroleum drilling and cementing, in particular to a bearing sealing ring of a roller bit. The bearing sealing ring comprises a rubber ring base body, wherein pressure grooves are respectively formed in the upper side and lower side of the rubber ring base body, and support bosses are arranged at the two sides of each pressure groove; the depth of single side of each pressure groove is equal to 8-10% of total thickness of the rubber ring base body, and the width of each pressure groove is greater than or equal to 50% of width of cross section of the sealing ring. The bearing sealing ring has the advantages that the contact pressure of the sealing area is uniform, and the sealing property is stable; the sealing pressure is increased by the pressure grooves, the heat expansion of the sealing ring is allowed, and the sealing effect is improved.
Description
Technical field
The present invention relates to oil drilling cementing technology field, particularly relate to a kind of cone bit bearing sealing ring and rifler thereof.
Background technology
Rifler is a kind of instrument of fractured rock in the earth's crust.The rifler great majority used in terms of oil drilling and other mining drill spies are seal form.Sealed roller cone drill bit is mainly made up of bit leg, bit leg axle, gear wheel, gear wheel hole, locking element and sealing member.And existing cone bit bearing sealing member, mainly there are seal with elastometic washer and metal end face seal.Seal with elastometic washer is the plastic deformation ability utilizing rubber good, ensures to seal with certain compression to sealing ring.Although it is conventional regular rubber ring simple in construction, compact, but can produce relative to groove after being loaded into cone groove and not line up or crooked, cause sealing area contact pressure uneven, sealing effectiveness is not fine, often there is sealing too early inefficacy, and then make the too early damage of whole rifler.And metal end face seal it formed sealing member by becket, rubber ring etc..Wherein rubber ring undertakes movable sealing as function circle and static sealing ring, becket.Its advantage is that sealing member frictional force is little, it is strong to adapt to high speed capability；But potted component is many, taking up room many, system complex, the accuracy of manufacture requires height, and packaging technology is loaded down with trivial details, limits range.
Summary of the invention
It is an object of the invention to overcome the deficiency of above-mentioned technology, and a kind of cone bit bearing sealing ring and rifler thereof are provided, take up room little.
The present invention for achieving the above object, by the following technical solutions:
A kind of cone bit bearing sealing ring, it is characterised in that: include that rubber ring matrix, the both sides up and down of described rubber ring matrix have head tank, be provided with support convex in the both sides of described head tank；The degree of depth is rubber ring matrix gross thickness the 8%～10% of described head tank one side, head tank width is more than or equal to 50% that sealing ring cross section is wide.
Preferably, described head tank is arranged on the middle part at the upper and lower two ends of sealing ring matrix.
A kind of rifler, it is characterised in that: include gear wheel, bit leg, locking ball and bearing sealed ring；Described locking ball is arranged between " R " groove of described gear wheel and bit leg, described bearing sealed ring is contained in cone bit palm and is connected in the gear wheel hole slot of root with bit leg axle, described bearing sealed ring includes rubber ring matrix, the both sides up and down of described rubber ring matrix have head tank, are provided with support convex in the both sides of described head tank；The degree of depth is rubber ring matrix gross thickness the 8%～10% of described head tank one side, head tank width is more than or equal to 50% that sealing ring cross section is wide.
The invention has the beneficial effects as follows: compared with prior art, the method have the advantages that 1, sealing property stable.nullCompared with sealing with cone bit bearing sealing ring and the traditional cone bit bearing regular rubber ring supporting convex high sealing performance with head tank，Conventional cone bit bearing sealing ring is in order to allow in use thermal expansion，The generally thickness of the aspect ratio bearing sealed ring of gear wheel seal groove is much larger，After this shortcoming having gap is assembling, sealing ring can not line up or crooked relative to gear wheel seal groove，This do not line up or crooked meeting causes sealing area contact pressure uneven，Sealing effectiveness is not fine，Often occur sealing too early inefficacy，And the cone bit bearing sealing ring of band head tank and support convex high sealing performance avoids not lining up or crooked after assembling，So make sealing area contact pressure uniform，Sealing property is stable，And head tank can increase sealing force and allow the thermal expansion of sealing ring simultaneously，Enhance the most again sealing effectiveness.
2, existing metal sealing device is numerous and diverse, element is many, adds manufacturing process and cost.Do rifler potted component with the cone bit bearing sealing ring of band head tank and support convex high sealing performance, be simple to manufacture, decrease manufacturing procedure, good product consistency, steady quality, reduce manufacturing cost.
3, simple in construction, compact, takies bearing space little.To take bearing space relatively small for this sealing ring compared with metal end face seal, has saved bearing space, has had certain advantage when bearing big the pressure of the drill.
Accompanying drawing explanation
Fig. 1 is the structural representation of rifler of the present invention；
Fig. 2 is the structural representation of middle (center) bearing sealing ring of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and preferred embodiment describe in detail the present invention detailed description of the invention.As it is shown in figure 1, a kind of cone bit bearing sealing ring, including rubber ring matrix 1, the both sides up and down of described rubber ring matrix have head tank 2,3, are provided with support convex 4,5,6,7 in the both sides of described head tank；The degree of depth is rubber ring matrix gross thickness the 8%～10% of described head tank one side, head tank width is more than or equal to 50% that sealing ring cross section is wide.Described head tank is arranged on the middle part at the upper and lower two ends of sealing ring matrix.
This rifler is by the bit leg 9 within gear wheel 8, gear wheel 8, and be positioned at the locking ball 10 outside bit leg and constitute, the cone bit bearing sealing ring of described band head tank and support convex is contained in cone bit palm and is connected with bit leg axle in the gear wheel hole slot 1,4 of root, and described locking ball 10 is arranged between " R " groove of gear wheel and bit leg.
Fig. 1 is cone bit cone of the present invention 8 and bit leg 9 and the assembling assumption diagram of the cone bit bearing sealing ring of band head tank and support convex, rubber matrix 1 by nitrile rubber, highly saturated nitrile rubber,
One in acrylate rubber, fluorubber constitutes or forms compounded rubber circle with politef, nylon, aramid fiber, high hardness butadiene-acrylonitrile rubber etc. and constitutes, and sealing ring cross sectional shape is long round section, square-section etc..As Fig. 2 shows, head tank 2,3 is arranged on the middle part at the upper and lower two ends of sealing ring, depth H is rubber ring gross thickness B 8%～the 10% of head tank one side, head tank width C is more than or equal to the 50% of the wide L in sealing ring cross section, supporting convex 4,5,6,7 and be arranged on the both sides of upper and lower two the end force grooves 2,3 of sealing ring, the support convex of upper and lower end face and rubber matrix gross thickness B should be about the 90% of gear wheel seal groove height A.
As depicted in figs. 1 and 2, when the gear wheel 8 of rifler assembles with bit leg 9, assembling band head tank and the cone bit bearing sealing ring of support convex simultaneously, bearing sealed ring with head tank and support convex loads in gear wheel hole slot 14, bottom the bearing sealed ring external diameter 15 with head tank and the support convex hole by gear wheel hole slot 14, position 14 is compressed, internal diameter of the seal ring 16 and bit leg axle 9 form sealing surface 11, and this sealing surface is formed to seal and prevents the excessive of bearing bore oils and fats and drilling fluid and the entrance of shaft bottom landwaste.
Conventional cone bit bearing sealing ring is in order to allow in use thermal expansion, the generally thickness of the aspect ratio bearing sealed ring of gear wheel seal groove is much larger, after this shortcoming having gap is assembling, sealing ring can not line up or crooked relative to gear wheel seal groove, this do not line up or crooked meeting causes sealing area contact pressure uneven, sealing effectiveness is not fine, often occur sealing too early inefficacy, and the cone bit bearing sealing ring of band head tank and support convex high sealing performance avoids not lining up or crooked after assembling, as Fig. 1 assembles rear support convex 4, 5, 6, 7 have played certain supporting role, avoid sealing ring not line up relative to gear wheel seal groove or crooked possibility, so make sealing area contact pressure uniform, sealing property is stable.
When rifler works in shaft bottom, Bearing inner and outside drilling fluid have certain pressure, pressure such as Fig. 1 during bit operation, 2 can be applied on the head tank 2,3 of bearing sealed ring, Bearing inner pressure is applied on head tank 2 direction by D → E → sealing surface 11, Bearing outer pressure is applied on head tank 3 direction by F → N → sealing surface 11, which increase sealing force and add sealing effectiveness, such that it is able to extend the use time of whole drill bit, improve synthetic wells efficiency.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (3)
1. a cone bit bearing sealing ring, it is characterised in that: include that rubber ring matrix, the both sides up and down of described rubber ring matrix have head tank, be provided with support convex in the both sides of described head tank；The degree of depth is rubber ring matrix gross thickness the 8%～10% of described head tank one side, head tank width is more than or equal to 50% that sealing ring cross section is wide.
Cone bit bearing sealing ring the most according to claim 1, it is characterised in that: described head tank is arranged on the middle part at the upper and lower two ends of sealing ring matrix.
3. a rifler, it is characterised in that: include gear wheel, bit leg, locking ball and bearing sealed ring；Described locking ball is arranged between " R " groove of described gear wheel and bit leg, described bearing sealed ring is contained in cone bit palm and is connected in the gear wheel hole slot of root with bit leg axle, described bearing sealed ring includes rubber ring matrix, the both sides up and down of described rubber ring matrix have head tank, are provided with support convex in the both sides of described head tank；The degree of depth is rubber ring matrix gross thickness the 8%～10% of described head tank one side, head tank width is more than or equal to 50% that sealing ring cross section is wide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610507175.0A CN105927155A (en) | 2016-06-30 | 2016-06-30 | Bearing sealing ring of roller bit and roller bit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610507175.0A CN105927155A (en) | 2016-06-30 | 2016-06-30 | Bearing sealing ring of roller bit and roller bit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105927155A true CN105927155A (en) | 2016-09-07 |
Family
ID=56829383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610507175.0A Pending CN105927155A (en) | 2016-06-30 | 2016-06-30 | Bearing sealing ring of roller bit and roller bit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105927155A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984864A (en) * | 2019-12-25 | 2020-04-10 | 西南石油大学 | Roller bit seal structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259868Y (en) * | 1995-07-31 | 1997-08-20 | 江汉石油管理局钻头厂 | Teethed wheel type tooth drill bit |
| CN2464923Y (en) * | 2000-09-28 | 2001-12-12 | 江汉石油钻头股份有限公司 | Bearing seal device |
| US20090114452A1 (en) * | 2007-11-01 | 2009-05-07 | Varel International, Ind., L.P. | Rock bit with a thermal insulating seal ring positioned in the seal gland |
| CN102797420A (en) * | 2012-08-29 | 2012-11-28 | 上海神开石油化工装备股份有限公司 | Bidirectional integrated spring energy storage sealed roller bit |
| CN205743714U (en) * | 2016-06-30 | 2016-11-30 | 天津立林钻头有限公司 | Cone bit bearing sealing ring and rifler thereof |
-
2016
- 2016-06-30 CN CN201610507175.0A patent/CN105927155A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259868Y (en) * | 1995-07-31 | 1997-08-20 | 江汉石油管理局钻头厂 | Teethed wheel type tooth drill bit |
| CN2464923Y (en) * | 2000-09-28 | 2001-12-12 | 江汉石油钻头股份有限公司 | Bearing seal device |
| US20090114452A1 (en) * | 2007-11-01 | 2009-05-07 | Varel International, Ind., L.P. | Rock bit with a thermal insulating seal ring positioned in the seal gland |
| CN102797420A (en) * | 2012-08-29 | 2012-11-28 | 上海神开石油化工装备股份有限公司 | Bidirectional integrated spring energy storage sealed roller bit |
| CN205743714U (en) * | 2016-06-30 | 2016-11-30 | 天津立林钻头有限公司 | Cone bit bearing sealing ring and rifler thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984864A (en) * | 2019-12-25 | 2020-04-10 | 西南石油大学 | Roller bit seal structure |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160907 |
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| RJ01 | Rejection of invention patent application after publication |