CN105545209A - Double-row swallow-tail sealing structure of roller bit - Google Patents
Double-row swallow-tail sealing structure of roller bit Download PDFInfo
- Publication number
- CN105545209A CN105545209A CN201610008635.5A CN201610008635A CN105545209A CN 105545209 A CN105545209 A CN 105545209A CN 201610008635 A CN201610008635 A CN 201610008635A CN 105545209 A CN105545209 A CN 105545209A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- double
- swallow
- face
- row
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 59
- 241000397426 Centroberyx lineatus Species 0.000 title abstract 9
- 239000004519 grease Substances 0.000 claims abstract description 5
- 230000001050 lubricating effect Effects 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims description 13
- 241000283216 Phocidae Species 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 9
- 239000012141 concentrate Substances 0.000 claims description 7
- 230000006378 damage Effects 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a double-row swallow-tail sealing structure of a roller bit. The double-row swallow-tail sealing structure is composed of a roller cone, a bearing and a double-row swallow-tail sealing ring. The double-row swallow-tail sealing ring is of an integrated structure composed of two swallow-tail sealing ring bodies in a combined mode, the bottom face is a large end face, the top face is a small end face, the self-sealing performance is improved, and distortion, rotation and vibration of the double-row swallow-tail sealing ring are avoided. The top face and the bottom face in the axial direction are both of the structures each formed by combining arc protrusions and an arc groove; as sealing is carried out through the multiple arc protrusions, the sealing area is effectively reduced, multilevel sealing is achieved, and lubricating grease can be conveniently stored through the grooves. As the two sides of the double-row swallow-tail sealing ring in the radial direction are of symmetrical structures combining slopes and arcs, stress concentration is reduced; multilevel sealing is achieved through the multiple protrusions, and the slopes have the automatic deformation compensating function. The middle of the double-row swallow-tail sealing ring is provided with two holes of the same structures composed of arcs and slopes, the slope degree of the slopes is the same as that of the outside slopes, the top face is in an arc shape, the bottom face is planar, and stress concentration is reduced.
Description
Technical field
The present invention relates to the double dovetail hermetically-sealed construction of a kind of rock bit being applicable to oil drilling, geological prospecting, belong to cone bit bearing field of sealing technology.
Background technology
Rock bit is most important a kind of drilling tool in drilling prospection, and application is very extensive, in drill bit market, occupy important position.Sealing is the parts of rock bit most critical is also consumable accessory, and sealing system performance directly determines the application life of rock bit, and sealing life is shorter, loses efficacy serious, and has had a strong impact on drilling engineering.The subject matter of rock bit sealing is: one is that the contact area of sealing ring is comparatively large, and the high temperature in shaft bottom in addition, makes frictional force and frictional heat sharply to increase, accelerate the senile abrasion of sealing ring.Two is that annular seal space is little, and be difficult to realize multi-stage sealed, single-stage sealing reliability is poor.Three is cannot realize automatic compensation function after the metal sealing surface wear of metal floating seal, can not ensure effective sealing.
Summary of the invention
The object of the invention is the deficiency in order to solve existing roller bit sealing structure, spy provides a kind of rock bit double dovetail hermetically-sealed construction.
The technical solution adopted for the present invention to solve the technical problems is: the double dovetail hermetically-sealed construction of a kind of rock bit of the present invention, is made up of gear wheel, bearing, double dovetail sealing ring; Described double dovetail sealing ring is that two dovetail sealing rings are combined into one structure, and bottom surface is large end face, and end face is small end face, improves self sealss performance, adds the stability of sealing, prevents double dovetail sealing ring to be distorted, to rotate, reduces vibration.Axially end face and bottom surface are the combining structure of circular arc projection and arc groove, and by multiple circular arc raised seals, effectively reduce sealing area, achieve multi-stage sealed, groove is convenient to storing lubricating grease.Radially the both sides of double dovetail sealing ring are the symmetrical structure that inclined-plane and circular arc combine, and reduce stress and concentrate, and reduce the destruction of sealing ring, realize multi-stage sealed by multiple projection, and inclined-plane has distortion automatic compensation function.The centre of double dovetail sealing ring is two mutually isostructural holes, and be made up of circular arc and inclined-plane, the gradient on inclined-plane is identical with the slope in outside, and end face is circular arc, and bottom surface is plane, effectively reduces stress and concentrates.
Advantage of the present invention is: 1, the bottom surface of the double dovetail hermetically-sealed construction of rock bit is large end face, and end face is small end face, adds the stability of sealing, prevents rotation, distortion, vibration; 2, double dovetail sealing ring adopts inclined-plane and circular arc to combine, and both reduces contact area, and reduces frictional force and frictional heat, turn reduces stress and concentrates, improve sealing life; 3, radially and axially, by multiple circular arc raised seals of double dovetail sealing ring, achieve multi-stage sealed, improve the reliability of sealing; 4, arc groove can storing lubricating grease, improves greasy property; 5, double dovetail sealing ring cross section is symmetrical structure, under the effect of pressure at both sides, is out of shape more even; 5, the double dovetail hermetically-sealed construction of rock bit has distortion automatic compensation function.
Accompanying drawing explanation
Fig. 1 is the double dovetail hermetically-sealed construction of a kind of rock bit of the present invention.
Fig. 2 is the enlarged drawing of Figure 1A place structure.
In figure: 1. tooth pawl, 2. gear wheel, 3. steel ball, 4. plug pin, 5. bearing, 6. double dovetail sealing ring.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1: tooth pawl 1 and gear wheel 2 are connected on bearing 5 respectively by gear wheel inner hole sleeve, be welded and fixed by plug pin 4, remained on bearing 5 by gear wheel 2 by steel ball 3 after steel ball 3 puts into bearing from plug pin hole.Double dovetail sealing ring 6 is housed between gear wheel 2 endoporus and bearing 5.
As shown in Figure 1, 2, the double dovetail hermetically-sealed construction of a kind of rock bit of the present invention, is made up of gear wheel 2, bearing 5, double dovetail sealing ring 6; Described double dovetail sealing ring 6 is that two dovetail sealing rings are combined into one structure, and bottom surface is large end face, and end face is small end face, improves self sealss performance, adds the stability of sealing, prevents double dovetail sealing ring 6 to be distorted, to rotate, to vibrate.Axially end face and bottom surface are the combining structure of circular arc projection and arc groove, and by multiple circular arc raised seals, effectively reduce sealing area, achieve multi-stage sealed, groove is convenient to storing lubricating grease.Radially the both sides of double dovetail sealing ring 6 are the symmetrical structure that inclined-plane and circular arc combine, and reduce stress and concentrate, and reduce the destruction of sealing ring, realize multi-stage sealed by multiple projection, and inclined-plane has distortion automatic compensation function.The centre of double dovetail sealing ring 6 is two mutually isostructural holes, and be made up of circular arc and inclined-plane, the gradient on inclined-plane is identical with the slope in outside, and end face is circular arc, and bottom surface is plane, effectively reduces stress and concentrates.
Claims (1)
1. the double dovetail hermetically-sealed construction of rock bit, be made up of gear wheel (2), bearing (5), double dovetail sealing ring (6), be positioned at the annular seal space that gear wheel (2) forms with bearing (5), it is characterized in that: described double dovetail sealing ring (6) is that two dovetail sealing rings are combined into one structure, bottom surface is large end face, end face is small end face, improve self sealss performance, prevent double dovetail sealing ring (6) to be distorted, to rotate, to vibrate; Axially end face and bottom surface are the combining structure of circular arc projection and arc groove, and by multiple circular arc raised seals, effectively reduce sealing area, achieve multi-stage sealed, groove is convenient to storing lubricating grease; Radially the both sides of double dovetail sealing ring (6) are the symmetrical structure that inclined-plane and circular arc combine, and reduce stress and concentrate, reduce the destruction of sealing ring, realize multi-stage sealed by multiple projection, inclined-plane has distortion automatic compensation function; The centre of double dovetail sealing ring (6) is two mutually isostructural holes, and be made up of circular arc and inclined-plane, the gradient on inclined-plane is identical with the slope in outside, and end face is circular arc, and bottom surface is plane, effectively reduces stress and concentrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610008635.5A CN105545209B (en) | 2016-01-08 | 2016-01-08 | A kind of double dovetail sealing structure of rock bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610008635.5A CN105545209B (en) | 2016-01-08 | 2016-01-08 | A kind of double dovetail sealing structure of rock bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105545209A true CN105545209A (en) | 2016-05-04 |
| CN105545209B CN105545209B (en) | 2017-09-12 |
Family
ID=55824714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610008635.5A Active CN105545209B (en) | 2016-01-08 | 2016-01-08 | A kind of double dovetail sealing structure of rock bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105545209B (en) |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3656764A (en) * | 1970-08-31 | 1972-04-18 | William P Robinson | Drill bit seal assembly |
| US3944306A (en) * | 1974-12-16 | 1976-03-16 | Smith International, Inc. | Rock bit bearing seal |
| US4176848A (en) * | 1978-06-30 | 1979-12-04 | Dresser Industries, Inc. | Rotary bearing seal for drill bits |
| US4294492A (en) * | 1979-11-19 | 1981-10-13 | Evans Robert F | Caliper seal assembly |
| US4344629A (en) * | 1980-10-14 | 1982-08-17 | Smith International, Inc. | Self-lapping high speed seal with wear-in lip |
| US4466621A (en) * | 1982-11-29 | 1984-08-21 | Rock Bit Industries U.S.A., Inc. | Rotary drill bit multiple seal assembly |
| US4776599A (en) * | 1987-10-19 | 1988-10-11 | Edward Vezirian | Dynamic packing ring seal system |
| US6536542B1 (en) * | 1999-10-28 | 2003-03-25 | Smith International, Inc. | Rock bit seal with multiple dynamic seal surface elements |
| JP2003206940A (en) * | 2001-11-16 | 2003-07-25 | Varel Internatl Inc | Bearing seal |
| US20050056462A1 (en) * | 2003-09-12 | 2005-03-17 | Burr Bruce H. | Lip seal for roller cone drill bit |
| US20050274550A1 (en) * | 2004-06-15 | 2005-12-15 | Smith International, Inc. | Multi-part energizer for mechanical seal assembly |
| CN101501292A (en) * | 2006-08-14 | 2009-08-05 | 贝克休斯公司 | Stabilized seal for rock bits |
| CN201297132Y (en) * | 2008-12-05 | 2009-08-26 | 西南石油大学 | A novel sealing system of high speed roller bit bearing |
| WO2010068729A2 (en) * | 2008-12-12 | 2010-06-17 | Baker Hughes Incorporated | Bearing seal with improved contact width |
| RU2452843C1 (en) * | 2010-12-29 | 2012-06-10 | Николай Митрофанович Панин | Support of rolling cutter drilling tool |
| CN102587835A (en) * | 2012-03-30 | 2012-07-18 | 幸发芬 | Double sealing system for roller bit bearings |
| CN102704850A (en) * | 2012-01-17 | 2012-10-03 | 苏州新锐工程工具有限公司 | Double-sealed structure for mining drill |
| 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 |
| WO2013149358A1 (en) * | 2012-04-01 | 2013-10-10 | Xing Fafen | Spring accumulator bearing twin sealing rings for roller cone bit |
| CN104948114A (en) * | 2015-07-22 | 2015-09-30 | 江汉石油钻头股份有限公司 | Seal ring with lubricating channel |
| CN105134083A (en) * | 2015-09-24 | 2015-12-09 | 西南石油大学 | Bearing spiral combined sealing structure of high-speed roller bit |
-
2016
- 2016-01-08 CN CN201610008635.5A patent/CN105545209B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3656764A (en) * | 1970-08-31 | 1972-04-18 | William P Robinson | Drill bit seal assembly |
| US3944306A (en) * | 1974-12-16 | 1976-03-16 | Smith International, Inc. | Rock bit bearing seal |
| US4176848A (en) * | 1978-06-30 | 1979-12-04 | Dresser Industries, Inc. | Rotary bearing seal for drill bits |
| US4294492A (en) * | 1979-11-19 | 1981-10-13 | Evans Robert F | Caliper seal assembly |
| US4344629A (en) * | 1980-10-14 | 1982-08-17 | Smith International, Inc. | Self-lapping high speed seal with wear-in lip |
| US4466621A (en) * | 1982-11-29 | 1984-08-21 | Rock Bit Industries U.S.A., Inc. | Rotary drill bit multiple seal assembly |
| US4776599A (en) * | 1987-10-19 | 1988-10-11 | Edward Vezirian | Dynamic packing ring seal system |
| US6536542B1 (en) * | 1999-10-28 | 2003-03-25 | Smith International, Inc. | Rock bit seal with multiple dynamic seal surface elements |
| JP2003206940A (en) * | 2001-11-16 | 2003-07-25 | Varel Internatl Inc | Bearing seal |
| US20050056462A1 (en) * | 2003-09-12 | 2005-03-17 | Burr Bruce H. | Lip seal for roller cone drill bit |
| US20050274550A1 (en) * | 2004-06-15 | 2005-12-15 | Smith International, Inc. | Multi-part energizer for mechanical seal assembly |
| CN101501292A (en) * | 2006-08-14 | 2009-08-05 | 贝克休斯公司 | Stabilized seal for rock bits |
| CN201297132Y (en) * | 2008-12-05 | 2009-08-26 | 西南石油大学 | A novel sealing system of high speed roller bit bearing |
| WO2010068729A2 (en) * | 2008-12-12 | 2010-06-17 | Baker Hughes Incorporated | Bearing seal with improved contact width |
| RU2452843C1 (en) * | 2010-12-29 | 2012-06-10 | Николай Митрофанович Панин | Support of rolling cutter drilling tool |
| CN102704850A (en) * | 2012-01-17 | 2012-10-03 | 苏州新锐工程工具有限公司 | Double-sealed structure for mining drill |
| CN102587835A (en) * | 2012-03-30 | 2012-07-18 | 幸发芬 | Double sealing system for roller bit bearings |
| WO2013149358A1 (en) * | 2012-04-01 | 2013-10-10 | Xing Fafen | Spring accumulator bearing twin sealing rings for roller cone bit |
| 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 |
| CN104948114A (en) * | 2015-07-22 | 2015-09-30 | 江汉石油钻头股份有限公司 | Seal ring with lubricating channel |
| CN105134083A (en) * | 2015-09-24 | 2015-12-09 | 西南石油大学 | Bearing spiral combined sealing structure of high-speed roller bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105545209B (en) | 2017-09-12 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |