CN102182751B - Radial sliding bearing for turbine drill - Google Patents
Radial sliding bearing for turbine drill Download PDFInfo
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- CN102182751B CN102182751B CN2011101019317A CN201110101931A CN102182751B CN 102182751 B CN102182751 B CN 102182751B CN 2011101019317 A CN2011101019317 A CN 2011101019317A CN 201110101931 A CN201110101931 A CN 201110101931A CN 102182751 B CN102182751 B CN 102182751B
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Abstract
The invention discloses a radial sliding bearing for a turbine drill. The bearing comprises a steel static ring and a steel moving ring, wherein the static ring is sleeved at the outer part of the moving ring; a first sliding contact layer which is formed by the arrangement of a plurality of hard alloy blocks in intervals is inlaid on the inner surface of the static ring; a second sliding contact layer which is formed by the arrangement of a plurality of hard alloy blocks in intervals is inlaid on the inner surface of the moving ring; and the first sliding contact layer and the second sliding contact layer are arranged in opposite and form sliding match. The sliding bearing provided by the invention has stronger abrasive resistance, the service life is prolonged greatly, the over-high temperature can be avoided in the using of the bearing, and the bearing can be suitable for the use under a severe working condition, such as a deep well and high-temperature high-pressure drill.
Description
Technical field
Mud motor is used in the fields such as a kind of oil, mine, coalfield, gas field that the present invention relates to; Especially a kind of simple in structure, radial sliding bearing that surface of friction pair long service life is inlaid with the turbodrill of hard alloy blocks belongs to machinery manufacturing technology field.
Background technique
As everyone knows, turbodrill is commercial Application a kind of down-hole fluid motor the earliest, and its effect is that the fluid pressure energy with working solution changes mechanical energy into, drives drill bit and rotates with broken bottom rock.Historically, always as the main drilling tool of its petroleum industry, the turbodrilling drilling depth accounts for total drill footage more than 80% to turbodrill in the former Soviet Union.And turbodrill still is Russia and western developed country oilfield a kind of mud motor commonly used at present.After China introduces the turbodrill production technology from the former Soviet Union the 1950's; Slower development; Fail to obtain fine application at the industrial and mineral scene, one of its major reason is: because turbodrill has the rotating speed height, moment of torsion is little, pressure drop is high, model is single; Technological deficiencies such as service lifetime is short, incompatible with China's drilling equipment and instrument development level.
Mainly be to change radial sliding bearing and axial thrust bearing during the turbodrill maintenance.The turbodrill radial sliding bearing friction pair of introducing from the former Soviet Union at that time all is to adopt hard-soft matching method; See also Fig. 1 to Fig. 3; Be respectively the structure sectional view of the radial sliding bearing of existing turbodrill; The structural representation of the stationary ring of the radial sliding bearing of existing turbodrill (outer shroud), and the structural representation of the rotating ring of the radial sliding bearing of existing turbodrill (interior ring).
As shown in the figure, the radial sliding bearing 100 of existing turbodrill comprises stationary ring 101 and rotating ring 102, and said stationary ring 101 is set in the outside of said rotating ring 102; Stationary ring 101, promptly the outer shroud of sliding bearing comprises outer ring 103, dividing plate 104, body 105 and rubber bushing 106 from outside to inside successively, wherein, outer ring 103 welds together through dividing plate 104 with body 105; Rubber bushing 106 is embedded in body 105 internal surfaces, its hardness lower (shore hardness 75～80) at interval.The internal surface of rubber bushing 106 is provided with axial groove, when drilling fluid flows through axial groove bearing is cooled off and lubricates.Rotating ring 102, promptly the interior ring of sliding bearing adopts alloy steel material to process, and its friction working surface is handled hardness higher (Brinell hardness HB=270～288) through carburizing or nitriding.Stationary ring 101 is sleeved on rotating ring 102, the internal surface slide relative of the rubber bushing 106 of the outer surface of rotating ring 102 and stationary ring 101, thus formed the sliding pair of the radial sliding bearing of hard-soft pairing (metal-rubber pairing).But the radial sliding bearing of existing turbodrill still has following deficiency:
1, owing to adopt hard-soft matching method, cause mechanical friction loss big, efficient is low;
2, existing radial sliding bearing operating life in containing the drilling fluid of sand is low, needs often to change, and the maintenance cost of equipment is high.
3, along with the increase of well depth; Formation temperature raises gradually; When the stratum temperature surpassed 120 ℃～150 ℃, the frictional heat of the radial sliding bearing of the metal of turbodrill-rubber pairing can not in time be pulled away, and rubber bushing very rapid hardening becomes fragile and lost efficacy; Reliability is relatively poor, thereby causes the existing turbodrill of the radial sliding bearing of hard-soft matching method that adopts to be not suitable for deep-well ultradeep well or hp-ht well probing.
Because the shortcoming that above-mentioned existing technology exists; The inventor is based on being engaged in related scientific research and field experience and professional knowledge; Actively improve and innovate, in the hope of realize a kind ofly can having stronger wear resistance, increase the service life, prevent bearing in use temperature too high, applicable to the radial sliding bearing that is used for turbodrill of deep-well and hp-ht well probing.
Existing technology:
The 100-sliding bearing; The 101-stationary ring; The 102-rotating ring; The 103-outer ring; The 104-dividing plate; The 105-body; The 106-rubber bushing.
The present invention:
The 1-stationary ring; The 2-rotating ring; 3-working solution runner;
The 4-first sliding contact layer; The hard alloy blocks of the 41-first sliding contact layer;
The 5-second sliding contact layer; The hard alloy blocks of the 51-second sliding contact layer; The 6-Bond.
Summary of the invention
The purpose of this invention is to provide a kind ofly have stronger wear resistance, long working life, can effectively prevent bearing in use temperature too high, applicable to the radial sliding bearing that is used for turbodrill of deep-well and hp-ht well probing.
For achieving the above object; The present invention proposes a kind of radial sliding bearing that is used for turbodrill; Comprise steel stationary ring and steel rotating ring; Said stationary ring is set in the outside of said rotating ring; On the internal surface of said stationary ring, inlay to be provided with by several hard alloy blocks and be spaced the first sliding contact layer that constitutes, on the outer surface of said rotating ring, inlay to be provided with by several hard alloy blocks and be spaced the second sliding contact layer that constitutes, said first sliding contact layer and the said second sliding contact layer are oppositely arranged to form and are slidingly matched.
The radial sliding bearing that is used for turbodrill as stated wherein, is connected through Bond between the internal surface of said stationary ring and the said first sliding contact layer; Also be connected between the outer surface of said rotating ring and the said second sliding contact layer through Bond.
The radial sliding bearing that is used for turbodrill as stated wherein, is connected through Bond between the adjacent said hard alloy blocks of the said first sliding contact layer; Also be connected between the adjacent said hard alloy blocks of the said second sliding contact layer through Bond.
The radial sliding bearing that is used for turbodrill as stated, wherein, said Bond is Tungsten carbite (WC) and copper alloy composite material Bond.
The radial sliding bearing that is used for turbodrill as stated, wherein, the longitudinal cross-section of said hard alloy blocks be shaped as rectangle or triangle or rhombus.
The radial sliding bearing that is used for turbodrill as stated; Wherein, Said several hard alloy blocks of the said first sliding contact layer are distributed on the internal surface of said stationary ring uniformly, the summation of the surface area of said several hard alloy blocks of the said first sliding contact layer be said stationary ring inner surface area 70%～80%; Accordingly; Said several hard alloy blocks of the said second sliding contact layer are distributed on the outer surface of said rotating ring uniformly, the summation of the surface area of said several hard alloy blocks of the said second sliding contact layer be said stationary ring inner surface area 70%～80%.
The radial sliding bearing that is used for turbodrill as stated, wherein, the hard alloy blocks of the hard alloy blocks of the said first sliding contact layer and the said second sliding contact layer all is matrix arrangement and forms latticed.
The radial sliding bearing that is used for turbodrill as stated wherein, offers the working solution runner at said stationary ring and said rotating ring on one of them vertically.
The radial sliding bearing that is used for turbodrill as stated wherein, offers the said working solution runner of many perforations vertically between the outer surface of said stationary ring and its internal surface, many said working solution runners circumferentially evenly laying along said stationary ring cross sections.
The radial sliding bearing that is used for turbodrill as stated wherein, offers the said working solution runner of many perforations vertically between the outer surface of said rotating ring and its internal surface, many said working solution runners circumferentially evenly laying along said rotating ring cross sections.
Compared with prior art, the present invention has following characteristics and advantage:
1, the present invention is through inlaying the hard alloy blocks that high-abrasive material is processed on stationary ring internal surface and rotating ring outer surface; Hard alloy blocks evenly the arrange first sliding contact layer and the second sliding contact layer of the sliding bearing friction pair working surface that constituted alloyed steel; Hard alloy blocks has certain area and thickness, has good carrying and abrasion-resistance.
2,, thereby has certain impact resistance because between the hard alloy blocks in the same sliding contact layer and all be connected with copper alloy composite material through Tungsten carbite (WC) with stationary ring or rotating ring steel body.Because the cemented carbide extreme hardness (>=HRA89); Such one firmly secondary～hard sliding bearing has extremely strong wear resistance; Compare with the metal～rubber radial sliding bearing of available technology adopting, the present invention has increased substantially the working life of turbodrill radial sliding bearing under drilling mud cooling and lubricating condition.
3, the present invention offers axial working solution runner on stationary ring or rotating ring; Make pivot friction heat energy in time taken away by working solution; Reduce bearing temperature, effectively prevented bearing temperature too high, improved bearing reliability and the corresponding working life that prolongs turbodrill.
4,, therefore expanded the application area of turbodrill in deep-well ultradeep well and hp-ht well probing greatly because each parts of the present invention all adopt the good metal or alloy material of heat-resisting property.
Description of drawings
Following accompanying drawing only is intended to the present invention is done schematic illustration and explanation, not delimit the scope of the invention.Wherein,
Fig. 1 is the structure sectional view of the radial sliding bearing of existing turbodrill;
Fig. 2 is the structural representation of the stationary ring (outer shroud) of the radial sliding bearing of existing turbodrill;
Fig. 3 is the structural representation of the rotating ring (interior ring) of the radial sliding bearing of existing turbodrill;
Fig. 4 is used for the radial sliding bearing embodiment's one of turbodrill sectional structure schematic representation for the present invention;
Fig. 5 is the plan structure schematic representation of the stationary ring (outer shroud) of embodiments of the invention one;
Fig. 6 is the sectional structure schematic representation of the rotating ring (interior ring) of embodiments of the invention one;
Fig. 7 is used for the radial sliding bearing embodiment's two of turbodrill sectional structure schematic representation for the present invention;
Fig. 8 is the plan structure schematic representation of the rotating ring (interior ring) of embodiments of the invention two;
Fig. 9 is the sectional structure schematic representation of the stationary ring (outer shroud) of embodiments of the invention two;
Figure 10 is the embodiment's one of a hard alloy blocks distribution of the present invention structural representation;
Figure 11 is the embodiment's two of a hard alloy blocks distribution of the present invention structural representation;
Figure 12 is the embodiment's three of a hard alloy blocks distribution of the present invention structural representation;
Figure 13 is the embodiment's four of a hard alloy blocks distribution of the present invention structural representation.
Description of reference numerals:
Embodiment
To understand in order technical characteristics of the present invention, purpose and effect being had more clearly, to contrast description of drawings embodiment of the present invention at present.
Embodiment one
Please refer to Fig. 4 to Fig. 6, be respectively the sectional structure schematic representation that the present invention is used for the radial sliding bearing embodiment one of turbodrill; The plan structure schematic representation of the stationary ring of embodiments of the invention one; And the sectional structure schematic representation of the rotating ring of embodiments of the invention one.As shown in the figure; The present invention proposes a kind of radial sliding bearing that is used for turbodrill; Comprise steel stationary ring 1 (being outer shroud) and steel rotating ring 2 (ring promptly); Said stationary ring 1 is set in the outside of said rotating ring 2, on the internal surface of said stationary ring 1, inlays to be provided with the first sliding contact layer 4, and this first sliding contact layer 4 is spaced by several hard alloy blocks 41 and constitutes; On the outer surface of said rotating ring 2, inlay and be provided with the second sliding contact layer 5; This second sliding contact layer 5 is spaced by several hard alloy blocks 51 and constitutes; The said first sliding contact layer 4 is oppositely arranged with the said second sliding contact layer 5 and forms and be slidingly matched; Promptly can produce sliding friction between the hard alloy blocks 51 of the hard alloy blocks 41 of the first sliding contact layer 4 and the second sliding contact layer 5, constitute firmly-be slidingly matched firmly.In the present embodiment; Hard alloy blocks 51 adopts the YG8 Hardmetal materials; To satisfy the requirement of hardness, scurf resistance; But the present invention also is not limited thereto, and hard alloy blocks 51 of the present invention can also adopt other existing Hardmetal materials, requires as long as guarantee the hardness of hard alloy blocks 51 and scurf resistance.The present invention adopts the working surface of hard alloy blocks as the bearing sliding friction, forms hard-hard sliding bearing.With existing hard-sliding bearing of soft cooperation compares.Cemented carbide extreme hardness of the present invention (>=HRA89), have good carrying and wear-resisting property, under turbodrilling mud cools lubricating condition, have long working life, reduced plant maintenance and replacement cost.
Further, like Fig. 4, shown in 10 to 13, be connected through Bond 6 between each hard alloy blocks 41 of the internal surface of said stationary ring 1 and the said first sliding contact layer 4; Also be connected between each hard alloy blocks 51 of the outer surface of said rotating ring 2 and the said second sliding contact layer 5 through Bond 6.Be connected through Bond 6 between the adjacent said hard alloy blocks 41 of the said first sliding contact layer 4; Also be connected between the adjacent said hard alloy blocks 51 of the said second sliding contact layer 5 through Bond 6.Preferably, said Bond 6 adopts Tungsten carbite (WC) and copper alloy composite material Bond.But the present invention also is not limited thereto, and the present invention also can adopt other known Bond, as long as can guarantee the internal surface of hard alloy blocks and stationary ring 1 and the outer surface of rotating ring 2, and firm and reliable connection gets final product between the hard alloy blocks of same sliding contact layer.
Further, please refer to Figure 10 to 13, be respectively the structural representation of the embodiment one of hard alloy blocks distribution of the present invention to embodiment four.Shown in figure 10; The longitudinal cross-section of said hard alloy blocks 41,51 be shaped as rectangle; And hard alloy blocks 41,51 axially is rectangular arrangement along being parallel to; Make hard alloy blocks 41,51 form even and discontinuous distributed in grid, between the adjacent hard alloy blocks in same surface, be filled with Bond 6, thereby form the first sliding contact layer 4, the second sliding contact layer 5; Make that the sliding bearing resistance to shock loads is respond well, and under the mud cools lubricating condition, have long operating life.Shown in figure 11, the shape of the longitudinal cross-section of said hard alloy blocks 41,51 also is a rectangle, and different is that hard alloy blocks 41,51 axially is rectangular arrangement along favouring, thereby forms the latticed first sliding contact layer 4 and the second sliding contact layer 5.Shown in figure 12; The longitudinal cross-section of said hard alloy blocks 41,51 be shaped as triangle; And adjacent triangle hard alloy blocks phase place is opposite and arranged in a crossed manner successively; Form even and discontinuous latticed arrangement, thereby form the first sliding contact layer 4, the second sliding contact layer 5, improved the resistance to shock loads effect of sliding bearing.Same row's triangle hard alloy blocks is on the same horizontal line.Shown in figure 13; The shape of the longitudinal cross-section of said hard alloy blocks 41,51 also is a triangle; And adjacent triangle hard alloy blocks phase place is opposite and arranged in a crossed manner successively, forms even and discontinuous latticed arrangement, thereby forms the first sliding contact layer 4, the second sliding contact layer 5.Be not both, it is poor that the triangle hard alloy blocks that same row's phase place is different has certain altitude, thereby further improved the ability of sliding bearing resistance to shock loads.But the shape of hard alloy blocks of the present invention also is not limited to rectangle, triangle; Can also be rhombus or other regular polygons or shape that anything is suitable; As long as can form the first sliding contact layer 4 and the second sliding contact layer 5 that can produce the slide relative friction; It is respond well to reach the sliding bearing resistance to shock loads, and the effect that under the mud cools lubricating condition, has than long operating life gets final product.
Further; In order to guarantee that the first sliding contact layer 4 and the second sliding contact layer 5 have enough work surface of contact; The summation that is uniformly distributed in each hard alloy blocks surface area on the internal surface of said stationary ring 1 is more than 70% of inner surface area of said stationary ring, is preferably 70%～80%; Accordingly, the summation that is uniformly distributed in each hard alloy blocks surface area on the outer surface of said rotating ring is more than 70% of inner surface area of said stationary ring, is preferably 70%～80%.Like this, making wins has enough work surface of contact between the sliding contact layer 4 and the second sliding contact layer 5, has further guaranteed being slidingly matched of sliding bearing working surface.
Further, in the present embodiment, please refer to Fig. 5,6, be respectively the plan structure schematic representation of the stationary ring of embodiments of the invention one; And the sectional structure schematic representation of rotating ring.As shown in Figure 5, between the outer surface of said stationary ring 1 and its internal surface, offer the working solution runner 3 of many perforations, many working solution runners 3 circumferentially evenly laying vertically along said stationary ring 1 cross sections.Like this; The frictional heat energy of sliding bearing of the present invention is in time taken away through the working solution that flows through in the working solution runner 3; Thereby reach the reduction bearing temperature; Prevent the purpose that bearing temperature is too high, the turbodrill that sliding bearing of the present invention is suitable in deep-well ultradeep well and hp-ht well probing, using uses, and has expanded the application area of turbodrill greatly.
In addition, in the present invention, the thickness of said hard alloy blocks 41,51 is 1.5mm～5mm, has further guaranteed the hardness and the wear-resisting property of hard alloy blocks.
Further; Spacing between the adjacent hard alloy blocks 41 of the said first sliding contact layer 4 is 2.0mm～5.0mm; And the spacing between the adjacent hard alloy blocks 51 of the said second sliding contact layer 5 is 2.0mm～5.0mm, thereby guarantees that further the first sliding contact layer 4 and the second sliding contact layer 5 have enough area of contact.
Further, first sliding contact layer 4 on the said stationary ring 1 and the radial clearance between the second sliding contact layer 5 on the said rotating ring 2 are 0.15mm～0.95mm, and face length is 50mm～300mm, thereby guarantee being slidingly matched between stationary ring 1 and the rotating ring 2.
Embodiment two
Please refer to Fig. 7 to Fig. 9, be respectively the sectional structure schematic representation of the embodiment of the invention two; The plan structure schematic representation of the rotating ring of embodiments of the invention two; The sectional structure schematic representation of the stationary ring of embodiments of the invention two.
As shown in the figure, the 26S Proteasome Structure and Function of present embodiment and the foregoing description one is basic identical, and therefore identical parts are represented with identical label, and no longer repeat to give unnecessary details.The difference of embodiment and the foregoing description one is, between the outer surface of said rotating ring 2 and its internal surface, offers the working solution runner 3 of many perforations vertically, many said working solution runners 3 circumferentially evenly laying along said rotating ring 2 cross sections.Like this; When working solution is flowed through the working solution runner 3 of rotating ring 2; Can in time take away the frictional heat energy of sliding bearing, thereby reach the reduction bearing temperature, prevent the purpose that bearing temperature is too high; The turbodrill that sliding bearing of the present invention is suitable in deep-well ultradeep well and hp-ht well probing, using uses, and has expanded the application area of turbodrill greatly.
In addition, in the present invention, working solution runner 3 is through forming through boring, Milling Process on stationary ring 1 or rotating ring 2.
In sum; The present invention is through inlaying the hard alloy blocks that high-abrasive material is processed on stationary ring internal surface and rotating ring outer surface; Hard alloy blocks evenly the arrange first sliding contact layer and the second sliding contact layer of the sliding bearing friction pair working surface that constituted alloyed steel; Hard alloy blocks has certain area and thickness, has good carrying and abrasion-resistance.And, all be connected with copper alloy composite material between the hard alloy blocks in the same sliding contact layer and with stationary ring or rotating ring, thereby have certain impact resistance through Tungsten carbite (WC).Because the cemented carbide extreme hardness (>=HRA89); Such one firmly secondary～hard sliding bearing has extremely strong wear resistance; Compare with the metal～rubber radial sliding bearing of available technology adopting, the present invention has increased substantially the working life under turbodrilling mud cools lubricating condition.In addition, the present invention offers axial working solution runner on stationary ring or rotating ring, makes pivot friction heat energy in time taken away by working solution, has reduced bearing temperature, and is too high to prevent bearing temperature.In addition, because each parts of the present invention all adopt the good metal or alloy material of heat-resisting property, therefore expanded the application area of turbodrill in deep-well ultradeep well and hp-ht well probing greatly.
The above is merely the schematic embodiment of the present invention, is not in order to limit scope of the present invention.Any those skilled in the art, equivalent variations of under the prerequisite that does not break away from design of the present invention and principle, having done and modification all should belong to the scope that the present invention protects.
Claims (10)
1. radial sliding bearing that is used for turbodrill; Said radial sliding bearing comprises steel stationary ring and steel rotating ring; Said stationary ring is set in the outside of said rotating ring; It is characterized in that; On the internal surface of said stationary ring, inlay to be provided with by several hard alloy blocks and be spaced the first sliding contact layer that constitutes, on the outer surface of said rotating ring, inlay to be provided with by several hard alloy blocks and be spaced the second sliding contact layer that constitutes, said first sliding contact layer and the said second sliding contact layer are oppositely arranged to form and are slidingly matched.
2. be used for the radial sliding bearing of turbodrill according to claim 1, it is characterized in that, be connected through Bond between the internal surface of said stationary ring and the said first sliding contact layer; Also be connected between the outer surface of said rotating ring and the said second sliding contact layer through Bond.
3. like the said radial sliding bearing that is used for turbodrill of claim 2, it is characterized in that, be connected through Bond between the adjacent said hard alloy blocks of the said first sliding contact layer; Also be connected between the adjacent said hard alloy blocks of the said second sliding contact layer through Bond.
4. like the said radial sliding bearing that is used for turbodrill of claim 3, it is characterized in that said Bond is Tungsten carbite and copper alloy composite material Bond.
5. be used for the radial sliding bearing of turbodrill according to claim 1, it is characterized in that, the longitudinal cross-section of said hard alloy blocks be shaped as rectangle or triangle or rhombus.
6. the radial sliding bearing that is used for turbodrill according to claim 1; It is characterized in that; Said several hard alloy blocks of the said first sliding contact layer are distributed on the internal surface of said stationary ring uniformly, the summation of the surface area of said several hard alloy blocks of the said first sliding contact layer be said stationary ring inner surface area 70%～80%; Accordingly; Said several hard alloy blocks of the said second sliding contact layer are distributed on the outer surface of said rotating ring uniformly, the summation of the surface area of said several hard alloy blocks of the said second sliding contact layer be said stationary ring inner surface area 70%～80%.
7. be used for the radial sliding bearing of turbodrill according to claim 1, it is characterized in that, the hard alloy blocks of the hard alloy blocks of the said first sliding contact layer and the said second sliding contact layer all is matrix arrangement and forms latticed.
8. like each said radial sliding bearing that is used for turbodrill in the claim 1 to 7, it is characterized in that, offer the working solution runner vertically on one of them at said stationary ring and said rotating ring.
9. like the said radial sliding bearing that is used for turbodrill of claim 8; It is characterized in that; Between the outer surface of said stationary ring and its internal surface, offer the said working solution runner of many perforations vertically, many said working solution runners circumferentially evenly laying along said stationary ring cross sections.
10. like the said radial sliding bearing that is used for turbodrill of claim 8; It is characterized in that; Between the outer surface of said rotating ring and its internal surface, offer the said working solution runner of many perforations vertically, many said working solution runners circumferentially evenly laying along said rotating ring cross sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101019317A CN102182751B (en) | 2011-04-22 | 2011-04-22 | Radial sliding bearing for turbine drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101019317A CN102182751B (en) | 2011-04-22 | 2011-04-22 | Radial sliding bearing for turbine drill |
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| Publication Number | Publication Date |
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| CN102182751A CN102182751A (en) | 2011-09-14 |
| CN102182751B true CN102182751B (en) | 2012-11-07 |
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| CN2011101019317A Expired - Fee Related CN102182751B (en) | 2011-04-22 | 2011-04-22 | Radial sliding bearing for turbine drill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3797451A (en) * | 1971-10-25 | 1974-03-19 | Turboservice Sa | Wear warning device for rotating apparatus provided with an axial thrust bearing |
| US3930749A (en) * | 1974-12-12 | 1976-01-06 | Moisei Timofeevich Gusman | Turbodrill |
| RU2063509C1 (en) * | 1993-08-26 | 1996-07-10 | Товарищество с ограниченной ответственностью научно-производственное предприятие "Сибпромэлектроника" | Acoustic sensor for monitoring revolution frequency of turbodrill shaft |
| CN202065352U (en) * | 2011-04-22 | 2011-12-07 | 中国石油大学(北京) | Radial sliding bearing used for turbine drill |
-
2011
- 2011-04-22 CN CN2011101019317A patent/CN102182751B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3797451A (en) * | 1971-10-25 | 1974-03-19 | Turboservice Sa | Wear warning device for rotating apparatus provided with an axial thrust bearing |
| US3930749A (en) * | 1974-12-12 | 1976-01-06 | Moisei Timofeevich Gusman | Turbodrill |
| RU2063509C1 (en) * | 1993-08-26 | 1996-07-10 | Товарищество с ограниченной ответственностью научно-производственное предприятие "Сибпромэлектроника" | Acoustic sensor for monitoring revolution frequency of turbodrill shaft |
| CN202065352U (en) * | 2011-04-22 | 2011-12-07 | 中国石油大学(北京) | Radial sliding bearing used for turbine drill |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI580871B (en) * | 2016-03-23 | 2017-05-01 | The Method and Structure of Extruded Bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102182751A (en) | 2011-09-14 |
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