CN107288692B - A kind of bearing block structure can effectively reduce bearing bore temperature - Google Patents
A kind of bearing block structure can effectively reduce bearing bore temperature Download PDFInfo
- Publication number
- CN107288692B CN107288692B CN201710706921.3A CN201710706921A CN107288692B CN 107288692 B CN107288692 B CN 107288692B CN 201710706921 A CN201710706921 A CN 201710706921A CN 107288692 B CN107288692 B CN 107288692B
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- Prior art keywords
- bearing block
- bearing
- hole
- cylindrical extension
- structure according
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
- F01D25/162—Bearing supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C37/00—Cooling of bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention relates to a kind of bearing block structures that can effectively reduce bearing bore temperature, the bearing block further includes cylindrical extension, the cylindrical extension and bearing block ontology are integrally formed, and the front side of the bearing block ontology is arranged in the cylindrical extension, the front end face of the cylindrical extension forms flanged joint end face；The flanged joint end face and the counterface of another plate-like bearing block are bolted, to substantially constitute bearing bore by the cylindrical extension and the bearing block ontology, plate-like bearing block and engine rotary shaft, and the cylindrical extension constitutes the outer wall of the bearing bore；Circumferentially arranged with several through-hole structures through entire bearing block axial direction on the ring wall of the cylindrical extension, the through-hole structure can at least wrap up the bearing bore substantially in the circumferential.Bearing block structure of the invention can effectively reduce bearing cavity temperature, improve lubricating oil cooling effect, and bearing working environment can be made to be improved, and extend bearing life.
Description
Technical field
The present invention relates to ground gas turbine and aero-engine fields, and in particular to one kind can effectively reduce bearing bore
The bearing block structure of temperature can optimize engine interior bearing working environment using the novel bearing holder structure, improve engine
Interior oil system improves lubricant effect, reduces bearing bore temperature, improves engine health, and then improve engine competitiveness.
Background technique
In ground gas turbine and aero-engine, bearing is one of essential critical component of engine, main
It to play a supportive role to engine other component, and bear certain axial force.In the process, be lubricated to bearing is to protect
Demonstrate,prove the most basic and most important link of the safe and reliable operation of bearing.Lubricating oil can reduce friction and the mill of bearing
Damage, takes away the heat as caused by rubbing surface and abrasion and guarantees that bearing inner race can be adequately cooled at impurity, effectively reduce through
Often appear in the probability for rubbing on high-speed bearing inner track and hurting failure.
In order to improve cooling effect, the temperature wrapped up in the bearing bore of bearing is particularly important.Excessively high bearing bore temperature
Degree can reduce the cooling effect of lubricating oil, or even cause the coking of lubricating oil, bring greatly hidden danger to the safe operation of engine.Especially
It is the high pressure and low pressure rear bearing positioned at engine turbine end, is influenced by turbine runner high temperature combustion gas, building ring
Border is especially severe, therefore reduces the temperature of bearing bore as much as possible, most important for the performance of engine.But previous
In engine structure, it is common practice to the turbine runner far from engine as far as possible by bearing bore, or increase other
Structure increases heat transfer resistance further to surround the bearing block for wrapping up bearing bore.But these methods, it often increases and starts
The size of machine, or number of parts is increased, the cost of engine is improved, and for microminiature gas turbine or aviation
For engine, these methods will will receive bigger limitation.In order to further increase the performance of engine, it is necessary to take new
Structure type, improve the working environment of bearing bore, improve bearing cooling effect.
Summary of the invention
For the disadvantages mentioned above and deficiency of the prior art, the present invention is intended to provide a kind of bearing bore temperature that can effectively reduce
Bearing block structure is new by using this for improving modern ground gas turbine and aeroplane engine inboard bearing working environment
Type bearing support structure can improve temperature field in bearing bore, improve lubricating oil cooling effect, improve engine health.
To realize the target, the technical solution adopted by the present invention are as follows:
A kind of bearing block structure can effectively reduce bearing bore temperature, the bearing block include bearing block ontology, the axis
It holds and bearing is set on the inner wall of ontology, the bearing is arranged in engine rotary shaft, which is characterized in that
The bearing block further includes cylindrical extension, and the cylindrical extension and bearing block ontology are integrally formed and described
The front side of the bearing block ontology is arranged in cylindrical extension, and the front end face of the cylindrical extension forms flanged joint end face；
The flanged joint end face and the counterface of another plate-like bearing block are bolted, to substantially be prolonged by the tubular
Extending portion and the bearing block ontology, plate-like bearing block and engine rotary shaft constitute bearing bore, and the cylindrical extension is constituted
The outer wall of the bearing bore；
Circumferentially arranged with several through-hole structures through entire bearing block axial direction, institute on the ring wall of the cylindrical extension
The bearing bore can at least be wrapped up substantially in the circumferential by stating through-hole structure.
More preferably, through-hole knot is also correspondingly provided with on the plate-like bearing block of cylindrical extension front end face cooperation
Structure, and the through-hole structure on the cylindrical extension and the plate-like bearing block corresponds.
More preferably, the rear end flange face of the bearing block is connected by the changeover portion casing of bolt and engine.
Using novel bearing holder structure of the invention, it can realize that cooling air-flow is through-flow in through-hole structure inside it, use
In wrapping up the bearing bore, bearing bore internal temperature is reduced.
More preferably, the cylindrical extension wall thickness of the bearing block should ensure that the enough intensity of bearing block, typically its wall
Face thickness is not less than 2mm.By using more advanced material, or optimization engine design, reduce axial force, it can be by bearing
Wall thickness further decreases.
More preferably, it in the axially extending bore inside configuration gassy of the bearing block, is equivalent to and is formed around bearing bore
One layer has certain thickness insulating layer structure.It, can be with since the thermal coefficient of gas is far below the thermal coefficient of metal
Greatly completely cut off heat radiation or heat transfer of the turbine part of high temperature to bearing block, to be effectively reduced inside bearing bore
Temperature.
It selectively, can be in the through-hole knot in order to increase thermal resistance to further increase the heat insulation of the design
The material with high thermal resistance such as stuffed heat insulated cotton inside structure.
Selectively, it in order to improve the cooling effect of the design, can be designed by engine structure, by engine secondary
Cooling air-flow in air system is introduced into the through-hole structure, and the cooling air-flow of flowing can take away the heat in the bearing bore
Amount, plays significantly cooling effect.
More preferably, when the through-hole structure internal circulation air system air-flow, in order to further increase the cold of bearing bore
But effect, the radial direction along the cylindrical extension can arrange multi-turn through-hole structure.
More preferably, radially arranged through-hole structure is no less than 2 circles.
More preferably, the arrangement mode respectively between circle through hole can be tandem, be staggered or other distribution modes,
The purpose is to so that the functional effect of the bearing block structure is reached best by more optimal arrangement mode.
More preferably, in the bearing block structure of multi-turn through hole, the through hole of difference circle can be individually designed, shape
Shape and size can optimize.
Selectively, in the bearing block structure of multi-turn through hole, the through hole of difference circle can individually reinforce a certain item
Functional effect, such as the high thermal resistance material such as stuffed heat insulated cotton in the through hole of outer ring, reinforcement heat insulation, and passing through in inner ring
Circulate cooling air-flow in perforation, reinforces the heat exchange cooling effect to bearing bore, and design can improve this hair to the maximum extent according to this
The effect of bright bearing block.
More preferably, in the bearing block structure of multi-turn through hole, in order to guarantee bearing block intensity, typically between each layer
Wall thickness should not be less than 0.5mm.By using more advanced material, or optimization engine design, reduce axial force, it can be with
Wall thickness between each layer is further decreased.
Selectively, the cross sectional shape through pore structure can be round, ellipse, fan-shaped or other shapes.
More preferably, circumferentially quantity is not less than 2 to the through hole.
More preferably, circumferentially between each through hole, support rib structure is formed, in order to ensure entire Process for Bearing Seat has foot
Enough intensity needs to guarantee that ribs have enough thickness.Typically, when designing through hole, it shall be guaranteed that the support
The thickness of rib is not less than 1.5mm.By using more advanced material, or optimization engine design, reduces axial force, can incite somebody to action
The thickness of ribs further decreases.
More preferably, fixation is bolted between the bearing block structure and adjacent mating parts, by seam allowance, or
Pin carries out concentric locating.Facilitate the dismounting and the maintenance in later period replacement of part.
By using the more than the present invention novel bearing block structure that can effectively reduce bearing bore temperature, compared to traditional knot
Structure has the advantage that bearing cavity temperature is effectively reduced in (1), improves lubricating oil cooling effect, improves engine health；(2)
Since bearing working environment is improved, bearing life can be extended, improve engine reliability；(3) although increasing
The wall thickness of bearing block, but most areas is hollow structure, therefore can't additionally increase engine weight, is had non-
Often big promotion prospect.
Detailed description of the invention
Fig. 1 is the assembling schematic diagram of the bearing block structure that can effectively reduce bearing bore temperature of the invention；
Fig. 2 is the schematic three dimensional views of bearing block structure of the invention；
Fig. 3 is the bearing block structure schematic diagram that design of the invention has multi-turn through hole.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, right hereinafter, referring to the drawings and the embodiments,
The present invention is further described.
Show as shown in Figure 1 for the assembly of the bearing block structure that can effectively reduce bearing bore temperature of the invention within the engine
It is intended to.1 is novel bearing holder structure of the invention, and 2 be stick roller bearing seat.It is by bolt 3 that two bearing block structures 1,2 are fixed
It links together.Stick roller bearing 4 is set in stick roller bearing seat 2, ball bearing 5 is set in bearing block 1, the setting of ball bearing 5 exists
In engine rotary shaft 6.By bearing block 1, stick roller bearing seat 2, stick roller bearing 4, ball bearing 5,6 common groups of engine rotary shaft
At bearing bore 7.8 can be attached bearing block 1 and changeover portion casing 8 for changeover portion casing by bolt arrangement 9.It is sending out
In motivation operational process, liquid lubricating oil and lubricating oil mist of oil are filled in bearing bore 7.These lubricating oil are by lubrication bearing and cold
But after lubricating oil, temperature is relatively high.It furthermore is as indicated by a dashed arrow in the figure the high-temperature gas in runner, temperature can reach
800 DEG C or more.Under the effect of its high temperature heat radiation, the temperature of entire turbine end component is higher.Bearing block 1,2 is warm under its effect
Degree increases, and the temperature in bearing bore 7 is caused also to be increased.In this case, in order to guarantee the effectively lubricating of bearing 4,5,
Prevent lubricating oil coking, it has to increase oil flow.
In order to solve this problem, a very effective measure is the temperature reduced in bearing bore, improves bearing
Working environment.Thus using novel bearing holder structure in the present invention, as shown in Fig. 2, bearing block 1 includes cylindrical extension, it is described
Cylindrical extension and bearing block ontology are integrally formed, and the front side of bearing block ontology is arranged in cylindrical extension, cylindrical extension
Front end face forms flanged joint end face；Flanged joint end face is connect with the counterface of plate-like bearing block 2 by bolt 3, thus
The outer wall of bearing bore 7 is substantially made of the cylindrical extension of bearing block 1.Designing on bearing block 1 has through entire bearing block
Through-hole 101, as shown in figure 1 shown in the dotted line on bearing block, which traverses entire bearing block 1, thus can be by bearing bore
7 packages.Since the thermal coefficient of air is far below the thermal coefficient of metal, thus good heat-blocking action can be played.And this
Kind heat insulation can also be further strengthened by materials such as stuffed heat insulated cottons in the through hole 101 on bearing block 1.
In order to improve the heat transfer effect of through hole 101 on bearing block structure of the present invention, by engine structure and can be
System design, such as through-hole structure can be also correspondingly provided on plate-like bearing block, and one by one with the through-hole structure of bearing block 1 101
It is corresponding, the cooling air-flow in air system is introduced into the through hole 101 on bearing block 1, shown in dotted arrow as shown in figure 1.
By changing the uninterrupted of cooling air-flow, the heat transfer effect of bearing block can be adjusted.
The bolt hole 102 on side is installed in bearing block by designing, it can be by bearing block and adjacent parts using bolt 3,9
Stick roller bearing seat 2 is fixedly connected with changeover portion casing 8.By pin or fixing structure, may be implemented between each part
Concentric locating.
Radially arranged polycyclic through hole can further enhance the effect of novel bearing holder structure of the present invention, such as Fig. 3 institute
Show, in the embodiment, design there are two ring through holes on bearing block 1.In order to ensure the intensity of bearing block, need to guarantee through hole it
Between ribs thickness 103 and through hole between wall wall thickness 104.Difference can be taken between polycyclic through hole
Arranged distribution mode；In addition, different functional effects can be reinforced between each through hole, for example circulate in inner ring through hole
Cooling air-flow, the materials such as stuffed heat insulated cotton in outer ring through hole.The quantity of through hole can be according to the actual needs of engine
It is adjusted optimization.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different.The equivalent or simple change that all structure, feature and principles described according to the invention patent design are done, is wrapped
It includes in the scope of protection of the patent of the present invention.Those skilled in the art can be to described specific implementation
Example is done various modifications or additions or is substituted in a similar manner, and without departing from structure of the invention or surmounts this
Range as defined in the claims, is within the scope of protection of the invention.
Claims (11)
1. a kind of bearing block structure that can effectively reduce bearing bore temperature, the bearing block includes bearing block ontology, the bearing
Bearing is set on the inner wall of seat ontology, and the bearing is arranged in engine rotary shaft, which is characterized in that
The bearing block further includes cylindrical extension, and the cylindrical extension and bearing block ontology are integrally formed, and the tubular
The front side of the bearing block ontology is arranged in extension, and the front end face of the cylindrical extension forms flanged joint end face；It is described
Flanged joint end face and the counterface of another plate-like bearing block are bolted, thus by the cylindrical extension with it is described
Bearing block ontology, plate-like bearing block and engine rotary shaft constitute bearing bore, and the cylindrical extension constitutes the bearing
The outer wall of chamber；
It is described logical circumferentially arranged with several through-hole structures through entire bearing block axial direction on the ring wall of the cylindrical extension
Pore structure wraps up the bearing bore substantially in the circumferential.
2. bearing block structure according to claim 1, which is characterized in that the gassy inside the through-hole structure, or
The stuffed heat insulated cotton of person.
3. bearing block structure according to claim 1, which is characterized in that the institute with cylindrical extension front end face cooperation
It states and is also correspondingly provided with through-hole structure on plate-like bearing block, and the through-hole structure on the cylindrical extension and the plate-like bearing block
It corresponds, secondary cooling air-flow in air system is introduced in the through-hole structure, to enhance the heat-insulated of the bearing block
With cooling effect.
4. bearing block structure according to claim 3, which is characterized in that the cross sectional shape of the through-hole structure be it is round or
Ellipse.
5. bearing block structure according to claim 3, which is characterized in that the circumferentially distributed quantity of the through-hole structure is not
Less than 2.
6. bearing block structure according to claim 3, which is characterized in that the radial arrangement multi-turn along the bearing block runs through
Hole, each through hole that encloses are tandem or are staggered that the shape and size of each through hole are individually designed, between each through hole
Ribs thickness and each layer through hole between layer wall thickness should be guaranteed that the intensity requirement of bearing block.
7. bearing block structure according to claim 6, which is characterized in that carry out different set inside the through hole of difference circle
It counts, filling heat insulator in the through hole of outer ring, ventilating air secondary system cooling air-flow in inner ring through hole.
8. bearing block structure according to claim 1, which is characterized in that pass through between the bearing block and adjacent part
Bolt is fixedly connected, and is positioned by seam allowance or pin.
9. bearing block structure according to claim 1, which is characterized in that the rear end flange face of the bearing block passes through bolt
It is connect with the changeover portion casing of engine.
10. bearing block structure according to claim 1, which is characterized in that the cylindrical extension wall thickness of the bearing block is answered
Guarantee that the enough intensity of bearing block, wall thickness are not less than 2mm.
11. bearing block structure according to claim 6, which is characterized in that in the bearing block structure of multi-turn through hole, be
Guarantee bearing block intensity, the wall thickness between each layer should not be less than 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706921.3A CN107288692B (en) | 2017-08-17 | 2017-08-17 | A kind of bearing block structure can effectively reduce bearing bore temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706921.3A CN107288692B (en) | 2017-08-17 | 2017-08-17 | A kind of bearing block structure can effectively reduce bearing bore temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107288692A CN107288692A (en) | 2017-10-24 |
| CN107288692B true CN107288692B (en) | 2019-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710706921.3A Active CN107288692B (en) | 2017-08-17 | 2017-08-17 | A kind of bearing block structure can effectively reduce bearing bore temperature |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019243B (en) * | 2018-01-15 | 2020-04-10 | 重庆江增船舶重工有限公司 | Turbine with integral bearing seat |
| CN108857287B (en) * | 2018-08-03 | 2020-02-14 | 重庆宏钢数控机床有限公司 | Cylindrical bearing seat machining process |
| CN109854629A (en) * | 2019-03-28 | 2019-06-07 | 绵阳小巨人动力设备有限公司 | A kind of heat-proof device of Micro Turbine Jet Engine bearing |
| CN114135346B (en) * | 2021-11-30 | 2023-11-14 | 中国航发湖南动力机械研究所 | Heat insulation cooling structure for hot end bearing seat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5857332A (en) * | 1996-12-20 | 1999-01-12 | Turbodyne Systems, Inc. | Bearing systems for motor-assisted turbochargers for internal combustion engines |
| JP2001208088A (en) * | 2000-01-21 | 2001-08-03 | Nsk Ltd | Bearing support apparatus and method of application of bearing |
| CN202811870U (en) * | 2012-07-24 | 2013-03-20 | 苏州市建军纺机配件厂 | Cooling device for bearing block of centrifuge |
-
2017
- 2017-08-17 CN CN201710706921.3A patent/CN107288692B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5857332A (en) * | 1996-12-20 | 1999-01-12 | Turbodyne Systems, Inc. | Bearing systems for motor-assisted turbochargers for internal combustion engines |
| JP2001208088A (en) * | 2000-01-21 | 2001-08-03 | Nsk Ltd | Bearing support apparatus and method of application of bearing |
| CN202811870U (en) * | 2012-07-24 | 2013-03-20 | 苏州市建军纺机配件厂 | Cooling device for bearing block of centrifuge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107288692A (en) | 2017-10-24 |
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