CN102168525B - Composite sealing ring of rotating shaft - Google Patents
Composite sealing ring of rotating shaft Download PDFInfo
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- CN102168525B CN102168525B CN201110103028.4A CN201110103028A CN102168525B CN 102168525 B CN102168525 B CN 102168525B CN 201110103028 A CN201110103028 A CN 201110103028A CN 102168525 B CN102168525 B CN 102168525B
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- rotating shaft
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Abstract
The present invention relates to a kind of sealing ring, particularly relate to a kind of composite sealing ring of rotating shaft for oil, geological drilling mechanical bearing, comprise sealing ring body, it is characterized in that: described sealing ring body is radially provided with wearing layer, supporting layer, preloading mound successively, described wearing layer is evenly equipped with single, is filled with rubber cement or heat-resistant adhesive between described single.Beneficial effect: compared with existing rock bit sealing ring, inner ring of the present invention and bit leg axle reduce more than 40% at the face friction factor of rotating in a circumferential direction, anti-wear performance improves 2 to 3 times, sealing ring of the present invention allows initial compression rate low simultaneously, reduce the wearing and tearing of sealing ring to bit leg axle, from the lift-off seal time while of two aspects, slow down seal failure, the sealing short-duration failure problem of rock bit under high temperature height rotating speed can be solved.
Description
Technical field
The present invention relates to a kind of sealing ring, particularly relate to a kind of composite sealing ring of rotating shaft for oil, geological drilling mechanical bearing.
Background technology
Because petroleum resources are continually developed, conventional mining resources quantity is fewer and feweri, gradually to the oil exploitation of more deep layer, exploitation difficulty continues to increase, more and more higher to the instructions for use of drilling machinery, conventional drilling mechanical seal behavior in service in the past can not meet the user demand of oil drilling probing.The key factor affecting rock bit application life in oil and gas well drilling is the life-span of bearing arrangement, i.e. bearing life and sealing life.Lower drill bit down-hole drilling speed is led to improve constantly in the reform of new technology, original 2 to 3 times are increased to now, this for drill bit rubber seal be a greatly challenge, traditional single material rubber seal is under this high rotating speed, its resistance to gentle anti-wear performance is all difficult to reach instructions for use, friction factor between bit leg axle and sealing ring inner ring is comparatively large, causes sealing ring to lose efficacy for a long time.Although two material rubber ring, metal skeleton seal ring have appearred again in the later stage successively, the deficiency through the practice test wear resistance at elevated temperature of sealing ring has at high speed become the key factor affecting sealing life, and then affects the whole service life of drill bit.
Summary of the invention
The object of the invention is to the deficiency overcoming above-mentioned technology, and provide production a kind of composite sealing ring of rotating shaft that can adapt to down-hole high temperature and high speed running, under the prerequisite ensureing sealing force, improve the anti-wear performance of sealing ring, thus extend drilling life of bit.
The present invention for achieving the above object, by the following technical solutions: a kind of composite sealing ring of rotating shaft, comprise sealing ring body, it is characterized in that: described sealing ring body is radially provided with wearing layer, supporting layer, preloading mound successively, described wearing layer is made up of some singles and rubber cement or hot glue stick, and described rubber cement or heat-resistant adhesive are filled between single;
Described single is ring-wound, combines closely with supporting layer;
Described preloading mound thickness accounts for 3/5 to 5/6 of sealing ring body gross thickness;
Described single is at least one deck along the radial direction of sealing ring body;
Described supporting layer selects shore hardness to be the rubber of 75A to 95A;
Described preloading mound selects shore hardness to be 50A to 80A rubber;
Described single is any one in viscose rayon, Fypro, vinal, glass fiber, aromatic polyamide fibre.
Beneficial effect: compared with existing rock bit sealing ring, inner ring of the present invention and bit leg axle reduce more than 40% at the face friction factor of rotating in a circumferential direction, anti-wear performance improves 2 to 3 times, sealing ring of the present invention allows initial compression rate low simultaneously, reduce the wearing and tearing of sealing ring to bit leg axle, from the lift-off seal time while of two aspects, slow down seal failure, the sealing short-duration failure problem of rock bit under high temperature height rotating speed can be solved.The high rigidity of inner ring of the present invention and superpower wear-resistant improve the ability of sealing ring opposing outside destroy, and a small amount of rock particles enters sealing system also can not bring fatal damage to sealing ring.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is schematic cross-section of the present invention;
Fig. 3 is installation site of the present invention schematic diagram.
Detailed description of the invention
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing and preferred embodiment.As shown in the figure, a kind of composite sealing ring of rotating shaft, comprises sealing ring body 1, and described sealing ring body is radially provided with wearing layer 2, supporting layer 3, preloading mound 4 successively, is namely inner ring, intermediate layer, outer ring successively.Described wearing layer is evenly equipped with some single 2-1, is filled with rubber cement or heat-resistant adhesive 2-2 between described single, and single is fixed by rubber cement or hot adhesive.Increase rubber cement or hot adhesive are the smoothness in order to improve wearing layer, with the friction factor by low wearing layer and bit leg axle 5.In rubber cement or hot adhesive, measuring fiber line is the abrasion resistance in order to strengthen wearing layer.Described single is ring-wound or cord fabric type braiding, combines closely with supporting layer.According to required, described single is at least one deck along the radial direction of sealing ring body.Single is any one in viscose rayon, Fypro, vinal, glass fiber, aromatic polyamide fibre.Described supporting layer is in the centre of sealing ring body, and adopt high rigidity, low compression rubber, namely shore is the rubber of 75A to 95A firmly, plays the supporting role to wearing layer.Described preloading mound is in the outmost turns of sealing ring body, and adopt soft high elastic rubber, namely shore hardness is 50A to 80A rubber, and shared thickness is comparatively large, and for sealing ring provides pretightning force, preloading mound thickness accounts for 3/5 to 5/6 of sealing ring body gross thickness.Compared with existing rock bit sealing ring, inner ring of the present invention and bit leg axle reduce more than 40% at the face friction factor of rotating in a circumferential direction, anti-wear performance improves 2 to 3 times, sealing ring of the present invention allows initial compression rate low simultaneously, reduce the wearing and tearing of sealing ring to bit leg axle, from the lift-off seal time while of two aspects, slow down seal failure, the sealing short-duration failure problem of rock bit under high temperature height rotating speed can be solved.The high rigidity of inner ring of the present invention and superpower wear-resistant improve the ability of sealing ring opposing outside destroy, and a small amount of rock particles enters sealing system also can not bring fatal damage to sealing ring.
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 considered as protection scope of the present invention.
Claims (1)
1. a composite sealing ring of rotating shaft, comprise sealing ring body, it is characterized in that: described sealing ring body is radially provided with wearing layer, supporting layer, preloading mound successively, described wearing layer is made up of some singles and rubber cement or hot glue stick, and described rubber cement or heat-resistant adhesive are filled between single; Described single is ring-wound, combines closely with supporting layer; Described preloading mound thickness accounts for 3/5 to 5/6 of sealing ring body gross thickness; Described single is at least one deck along the radial direction of sealing ring body; Described supporting layer selects shore hardness to be the rubber of 75A to 95A; Described preloading mound selects shore hardness to be 50A to 80A rubber; Described single is any one in viscose rayon, Fypro, vinal, glass fiber, aromatic polyamide fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110103028.4A CN102168525B (en) | 2011-04-22 | 2011-04-22 | Composite sealing ring of rotating shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110103028.4A CN102168525B (en) | 2011-04-22 | 2011-04-22 | Composite sealing ring of rotating shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102168525A CN102168525A (en) | 2011-08-31 |
| CN102168525B true CN102168525B (en) | 2016-03-23 |
Family
ID=44489826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110103028.4A Active CN102168525B (en) | 2011-04-22 | 2011-04-22 | Composite sealing ring of rotating shaft |
Country Status (1)
| Country | Link |
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| CN (1) | CN102168525B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103660327B (en) * | 2012-08-31 | 2016-04-27 | 宝山钢铁股份有限公司 | A kind of rapid plugging method for fiberglass for barreled tooth flank power transmission shaft lubrication pockets under High Rotation Speed state |
| CN103438212B (en) * | 2013-09-18 | 2016-02-03 | 重庆市九龙坡区西站橡胶制品厂 | A kind of steering wheel seal ring |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881136A (en) * | 2010-07-09 | 2010-11-10 | 天津立林钻头有限公司 | Compound seal roller bit |
| CN101892807A (en) * | 2010-08-10 | 2010-11-24 | 天津立林石油机械有限公司 | Cone bit for high-speed and high-temperature drilling |
| CN202039776U (en) * | 2011-04-22 | 2011-11-16 | 天津立林石油机械有限公司 | Composite sealing ring of rotating shaft |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060243494A1 (en) * | 2005-04-28 | 2006-11-02 | Baker Hughes Incorporated | Earth boring bit lubricant chamber barrier member with dispersed fibers |
| US8020638B2 (en) * | 2006-10-30 | 2011-09-20 | Smith International, Inc. | Seal with dynamic sealing surface at the outside diameter |
| US9169377B2 (en) * | 2008-07-23 | 2015-10-27 | Smith International, Inc. | Seal comprising elastomeric composition with nanoparticles |
| US20100071960A1 (en) * | 2008-09-24 | 2010-03-25 | Baker Hughes Incorporated | System, Method and Apparatus for Composite Seal Gland Insert in Roller Cone Rock Bit |
-
2011
- 2011-04-22 CN CN201110103028.4A patent/CN102168525B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881136A (en) * | 2010-07-09 | 2010-11-10 | 天津立林钻头有限公司 | Compound seal roller bit |
| CN101892807A (en) * | 2010-08-10 | 2010-11-24 | 天津立林石油机械有限公司 | Cone bit for high-speed and high-temperature drilling |
| CN202039776U (en) * | 2011-04-22 | 2011-11-16 | 天津立林石油机械有限公司 | Composite sealing ring of rotating shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102168525A (en) | 2011-08-31 |
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