CN103195368A - Cone bit double-elastic-piece sealing device - Google Patents
Cone bit double-elastic-piece sealing device Download PDFInfo
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- CN103195368A CN103195368A CN2013101310585A CN201310131058A CN103195368A CN 103195368 A CN103195368 A CN 103195368A CN 2013101310585 A CN2013101310585 A CN 2013101310585A CN 201310131058 A CN201310131058 A CN 201310131058A CN 103195368 A CN103195368 A CN 103195368A
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- China
- Prior art keywords
- ring
- sealing
- chip removal
- shell fragment
- rock bit
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Abstract
A cone bit double-elastic-piece sealing device comprises a head section bearing, a cone, a sealing component and a sealing groove. The sealing groove is arranged between an orifice of the cone and a root of the head section bearing. The sealing component arranged in the sealing groove comprises an elastic metal backing ring, a metal chip removal ring and a sealing ring component. The sealing ring component is arranged between the elastic metal backing ring and the metal chip removal ring. Rock debris of well drilling is effectively prevented from entering a bearing inner cavity by the aid of the sealing component; good stability performance can be kept under the working conditions of high bit pressure and high rotation speed, so that service life of the sealing component of the cone bit can be effectively prolonged; a chip stopping sealing ring in the sealing component is made of rectangular rubber or rubber materials with clamping cloth, and can be in different resistance states under the action of the metal chip removal ring; and under different pressure conditions, pressure of the bearing inner cavity of the cone bit can be kept in balance with outside by the elastic metal backing ring and a bearing inner sealing ring, and additional heat cannot be generated due to excessive friction.
Description
Technical field
The present invention relates to the two shell fragment sealing devices of a kind of rock bit, be applicable to the closed type rock bit that oil, geology, engineering are used.
Background technology
The life-span of rock bit depends primarily on bearing.Whether the life-span of bearing then depends primarily on sealing performance good.One of function of hermetically-sealed construction is to prevent that the lubricating grease in the bearing from leaking, the 2nd, and the mud that stops bit exterior to have corrosivity and abrasiveness is invaded bearing.If in a single day hermetically-sealed construction lost efficacy, bearing will be worn soon, thereby causes drill bit to lose efficacy.
In the prior art, the hermetically-sealed construction that rock bit adopts mainly contains two kinds of forms: rubber sealing structure and mechanical seal structure.
As, disclosed bearing sealing structure for rotary drill bit among patent US 5524718 and the US 5655611, employing be an O shape rubber seal, what then adopt among patent US 3765495 and the US 4037673 is a rubber rectangular ring.The advantage of this rubber sealing structure is to make simply, but shortcoming is that the hermetically-sealed construction life-span is short, does not match with application life of other member of rock bit.
Another seal form is mechanical seal structure.As disclosed bearing sealing structure for rotary drill bit among patent US 4516641, US 4666001 and the US4923020, employing by two rubber seal and two mechanical seal structures that metallic packing ring is formed.Its advantage is that movable sealing is born by metallic sealing section, has prolonged the application life of hermetically-sealed construction, and shortcoming is that manufacture difficulty is big, the cost height.
Summary of the invention
The two shell fragment sealing devices of a kind of rock bit provided by the invention; metal chip removal loop resistance every the landwaste of drilling well enter bearing; effectively protected sealing ring to contact with the direct of landwaste; significantly promote the Acceptable life of the black box of rock bit; and can use different structure flexibly and adjust the sealing ring decrement according to different working conditions, guarantee the validity that seals.Simple in structure, be convenient to install, easy to operate, maintenance cost is lower.
In order to achieve the above object, the invention provides the two shell fragment sealing devices of a kind of rock bit, the sealing device comprises teeth palm bearing, gear wheel, black box and seal groove, and described seal groove is arranged between the root of the aperture of gear wheel and teeth palm bearing, and black box is arranged in the seal groove;
Described black box comprises metallic elastic gasket ring, metal chip removal ring, and is arranged on the sealing ring composite member between described metallic elastic gasket ring and the metal chip removal ring.
Described sealing ring composite member comprises bearing inner seal ring and the resistance bits exterior seal ring in the groove that is arranged on described seal groove;
Described bearing inner seal ring is positioned at the downside of described metallic elastic gasket ring;
Described resistance bits exterior seal ring is positioned at the upside of described metal chip removal ring.
Described bearing inner seal ring adopts square type elastomeric material.
Described resistance bits exterior seal ring adopts square type rubber or modified Teflon material.
Described resistance bits exterior seal ring adopts is with cloth inserted elastomeric material.
Described sealing ring composite member comprises the sealing ring in the groove that is arranged on described seal groove, and the sealing circle is between described metallic elastic gasket ring and metal chip removal ring.
Described sealing ring adopts square type rubber or modified Teflon material.
Described metallic elastic gasket ring and metal chip removal ring adopt stainless steel material.
Described metallic elastic gasket ring is shaped as U-shaped disc type spring or V-type disc type spring.
Described metal chip removal ring is provided with rib in the one side that contacts with seal groove, the circumference of this rib and metal chip removal ring radially in an angle, angle is 0
o～85
o
Black box of the present invention can stop the landwaste of drilling well to enter bearing cavity effectively, at high the pressure of the drill, can keep the good stable performance under the high-revolving operating mode, the black box Acceptable life of rock bit is increased substantially, resistance bits sealing ring in the black box can be designed to rectangular rubber or be with cloth inserted elastomeric material according to different working conditions, under the effect of metal chip removal ring, make resistance bits sealing ring possess different resistance state, at different pressure conditions, metallic elastic gasket ring and bearing inner seal ring can keep cone bit bearing chamber pressure and external balance, simultaneously again can be because of the excessive extra heat that produces that rubs.
Description of drawings
Fig. 1 is the schematic diagram of the two shell fragment sealing devices of the rock bit among the present invention;
Fig. 2 is the amplification assumption diagram of Fig. 1 sealing device part, is the sectional structure chart of first embodiment of the invention;
Fig. 3 is the amplification assumption diagram of Fig. 1 sealing device part, is the sectional structure chart of second embodiment of the invention;
Fig. 4 is the amplification assumption diagram of Fig. 1 sealing device part, is the sectional structure chart of third embodiment of the invention;
Fig. 5 is the stereogram of the U-shaped disc type spring structure of metallic elastic gasket ring among the present invention;
Fig. 6 is the stereogram of the metallic elastic gasket ring V-type disc type spring structure among the present invention;
Fig. 7 is the stereogram of the metal chip removal ring among the present invention.
The specific embodiment
Following according to Fig. 1～Fig. 7, specify preferred embodiment of the present invention.
As shown in Figure 1, the invention provides the two shell fragment sealing devices of a kind of rock bit, it is installed on the cone bit bearing; The sealing device comprises teeth palm bearing 1, gear wheel 2, black box 3 and seal groove 4, and described seal groove 4 is arranged between the root of the aperture of gear wheel 2 and teeth palm bearing 1, and black box 3 is arranged in the seal groove 4.
As shown in Figure 2, be the first embodiment of the present invention, black box 3 comprises: bearing inner seal ring 6 and resistance bits exterior seal ring 7, metallic elastic gasket ring 5 and metal chip removal ring 8; Described bearing inner seal ring 6 is arranged in the groove of described seal groove 4, and is positioned at the downside of described metallic elastic gasket ring 5, adopts the rectangular rubber material to make; Described resistance bits exterior seal ring 7 is arranged in the groove of described seal groove 4, and is positioned at the upside of described metal chip removal ring 8, adopts rectangular rubber or modified Teflon material to make; Described bearing inner seal ring 6 and resistance bits exterior seal ring 7 are close together, and are arranged between metallic elastic gasket ring 5 and the metal chip removal ring 8, and metallic elastic gasket ring 5 and metal chip removal ring 8 play the effect of stabilized seal circle.
As shown in Figure 3, be the second embodiment of the present invention, be that with the difference of first embodiment shown in Figure 2 described resistance bits exterior seal ring 7a adopts and is with cloth inserted rectangular rubber material to make.
As shown in Figure 4, be the third embodiment of the present invention, black box 3 comprises: sealing ring 9 is arranged in the groove of described seal groove 4, and is positioned at the downside of described metallic elastic gasket ring 5 and the upside of metal chip removal ring 8; Described sealing ring 9 adopts square type rubber or modified Teflon material.
As shown in Figure 5, the shape of metallic elastic gasket ring 5 adopts U-shaped disc type spring structure, and the disc type spring has been given full play to structural advantage, plays the balanced action of compensated drill bit bearing bore external and internal pressure.
As shown in Figure 6, the shape of metallic elastic gasket ring 5 adopts V-type disc type spring structure.
As shown in Figure 7, metal chip removal ring 8 is provided with rib 801 in the one side that contacts with seal groove, the circumference of this rib 801 and metal chip removal ring 8 radially in an angle, angle is 0
o～85
o, in drilling process, these ribs can stop the landwaste outside the gap to enter the sealing position.
Compared with prior art, the two shell fragment sealing devices of rock bit provided by the present invention, it has the following advantages and beneficial effect:
1, black box is made by the bearing inner seal ring that adopts the rectangular rubber material with the resistance bits exterior seal ring of cloth inserted rectangular rubber material, metallic elastic gasket ring and the metal chip removal ring of employing stainless steel material, can stop the landwaste of drilling well to enter bearing cavity effectively, under high the pressure of the drill, high-revolving operating mode, can keep the good stable performance, the Acceptable life of the black box of rock bit is increased substantially.
2, resistance bits sealing ring can be designed to rubber or be with cloth inserted elastomeric material according to different working conditions, under the effect of metal chip removal ring, make resistance bits sealing ring possess different resistance state, at different pressure conditions, metallic elastic gasket ring and bearing inner seal ring can keep cone bit bearing chamber pressure and external balance, simultaneously again can be because of the excessive extra heat that produces that rubs.
3, simple in structure, be convenient to install, easy to operate, maintenance cost is lower.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. two shell fragment sealing devices of a rock bit, it is characterized in that, the sealing device comprises teeth palm bearing (1), gear wheel (2), black box (3) and seal groove (4), described seal groove (4) is arranged between the root of the aperture of gear wheel (2) and teeth palm bearing (1), and black box (3) is arranged in the seal groove (4);
Described black box (3) comprises metallic elastic gasket ring (5), metal chip removal ring (8), and is arranged on the sealing ring composite member between described metallic elastic gasket ring (5) and the metal chip removal ring (8).
2. the two shell fragment sealing devices of rock bit as claimed in claim 1 is characterized in that, described sealing ring composite member comprises bearing inner seal ring (6) and the resistance bits exterior seal ring (7) in the groove that is arranged on described seal groove (4);
Described bearing inner seal ring (6) is positioned at the downside of described metallic elastic gasket ring (5);
Described resistance bits exterior seal rings (7) are positioned at the upside of described metal chip removal ring (8).
3. the two shell fragment sealing devices of rock bit as claimed in claim 2 is characterized in that, described bearing inner seal ring (6) adopts square type elastomeric material.
4. the two shell fragment sealing devices of rock bit as claimed in claim 2 is characterized in that described resistance bits exterior seal rings (7) adopt square type rubber or modified Teflon material.
5. the two shell fragment sealing devices of rock bit as claimed in claim 2 is characterized in that, described resistance bits exterior seal rings (7a) adopt is with cloth inserted elastomeric material.
6. two shell fragment sealing devices of rock bit as claimed in claim 1, it is characterized in that, described sealing ring composite member comprises the sealing ring (9) in the groove that is arranged on described seal groove (4), and sealing circle (9) is positioned between described metallic elastic gasket ring (5) and the metal chip removal ring (8).
7. the two shell fragment sealing devices of rock bit as claimed in claim 6 is characterized in that described sealing ring (9) adopts square type rubber or modified Teflon material.
8. as claim 1 or the two shell fragment sealing devices of 2 or 6 described rock bit, it is characterized in that described metallic elastic gasket ring (5) and metal chip removal ring (8) adopt stainless steel material.
9. the two shell fragment sealing devices of rock bit as claimed in claim 8 is characterized in that described metallic elastic gasket ring (5) is shaped as U-shaped disc type spring or V-type disc type spring.
10. two shell fragment sealing devices of rock bit as claimed in claim 8, it is characterized in that, described metal chip removal ring (8) is provided with rib (801) in the one side that contacts with seal groove, the circumference of this rib (801) and metal chip removal ring (8) radially in an angle, angle is 0
o～85
o
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101310585A CN103195368A (en) | 2013-04-16 | 2013-04-16 | Cone bit double-elastic-piece sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101310585A CN103195368A (en) | 2013-04-16 | 2013-04-16 | Cone bit double-elastic-piece sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103195368A true CN103195368A (en) | 2013-07-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101310585A Pending CN103195368A (en) | 2013-04-16 | 2013-04-16 | Cone bit double-elastic-piece sealing device |
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| CN (1) | CN103195368A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320211A (en) * | 2020-10-09 | 2022-04-12 | 中国海洋石油集团有限公司 | Thermal recovery positioning insertion sealing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4178045A (en) * | 1978-05-05 | 1979-12-11 | Smith International, Inc. | Abrasion resistant bearing seal |
| US4466622A (en) * | 1980-07-24 | 1984-08-21 | Reed Rock Bit Company | Compound dynamic seal for rolling cutter drill bit |
| US4762189A (en) * | 1987-05-28 | 1988-08-09 | Tatum David M | Seal and seal shield assembly for rotary drill bits |
| US5040624A (en) * | 1990-08-13 | 1991-08-20 | Schumacher Percy W | Seal assembly for roller cutter drill bit having a pressure balanced lubrication system |
| US5251914A (en) * | 1987-05-28 | 1993-10-12 | Tatum David M | Sealing assembly for relatively movable members |
| CN202832216U (en) * | 2012-04-01 | 2013-03-27 | 幸发芬 | Spring energy storage bearing double seal ring of roller bit |
| CN203161091U (en) * | 2013-04-16 | 2013-08-28 | 上海神开石油化工装备股份有限公司 | Double elastic piece sealing device for cone bit |
-
2013
- 2013-04-16 CN CN2013101310585A patent/CN103195368A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4178045A (en) * | 1978-05-05 | 1979-12-11 | Smith International, Inc. | Abrasion resistant bearing seal |
| US4466622A (en) * | 1980-07-24 | 1984-08-21 | Reed Rock Bit Company | Compound dynamic seal for rolling cutter drill bit |
| US4762189A (en) * | 1987-05-28 | 1988-08-09 | Tatum David M | Seal and seal shield assembly for rotary drill bits |
| US5251914A (en) * | 1987-05-28 | 1993-10-12 | Tatum David M | Sealing assembly for relatively movable members |
| US5040624A (en) * | 1990-08-13 | 1991-08-20 | Schumacher Percy W | Seal assembly for roller cutter drill bit having a pressure balanced lubrication system |
| CN202832216U (en) * | 2012-04-01 | 2013-03-27 | 幸发芬 | Spring energy storage bearing double seal ring of roller bit |
| CN203161091U (en) * | 2013-04-16 | 2013-08-28 | 上海神开石油化工装备股份有限公司 | Double elastic piece sealing device for cone bit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320211A (en) * | 2020-10-09 | 2022-04-12 | 中国海洋石油集团有限公司 | Thermal recovery positioning insertion sealing device |
| CN114320211B (en) * | 2020-10-09 | 2024-03-08 | 中国海洋石油集团有限公司 | Thermal recovery positioning insertion sealing device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130710 |