CN108131399B - A kind of engine bearing seat cooling structure - Google Patents
A kind of engine bearing seat cooling structure Download PDFInfo
- Publication number
- CN108131399B CN108131399B CN201711158797.8A CN201711158797A CN108131399B CN 108131399 B CN108131399 B CN 108131399B CN 201711158797 A CN201711158797 A CN 201711158797A CN 108131399 B CN108131399 B CN 108131399B
- Authority
- CN
- China
- Prior art keywords
- partition
- internal
- engine
- channel
- bearing seat
- 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.)
- Active
Links
- 238000001816 cooling Methods 0.000 claims abstract description 49
- 238000005192 partition Methods 0.000 claims description 98
- 238000002485 combustion reaction Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 6
- 238000010894 electron beam technology Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000004323 axial length Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/16—Cooling of plants characterised by cooling medium
- F02C7/18—Cooling of plants characterised by cooling medium the medium being gaseous, e.g. air
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of engine bearing seat cooling structures, belong to engine art.Engine bearing seat cooling scheme proposed by the present invention has preferable cooling effect for the bearing block at engine thermal end pieces; by the thermal force for reducing bearing block; reduce the bear vibration in engine working process in bearing block inner cavity; the purpose of protection bearing is played, the service life for improving engine operation stability, extending bearing.
Description
Technical field
The present invention relates to technical field of engines, and in particular to a kind of engine bearing seat cooling structure.
Background technique
The fulcrum of all rotors is bearing in engine, and all load of engine are all by bearing load, and bearing block is
The bearing of bearing and stress point undertake the loading force from bearing in engine working process.Bearing block structure is usually compact,
So stability requirement when to work is higher.In engine working process, in addition to the cooling effect of bearing to be guaranteed, bearing
Seat also needs enough cooling effects, otherwise easily causes the problems such as bearing working is unstable, vibration is big, bearing wear, in turn
It influences engine behavior and even damages engine.Therefore in the design structure of engine, spininess designs bearing block special
Cooling structure, the especially cooling structure of hot end bearing block.
As shown in Figure 1, the bearing block cooling structure form at the engine thermal end pieces of existing conventional design is double-layer structure,
It is made of partition 2 and shell 3, forms internal channel 5 and outer tunnel 6, be normally at the lower section of combustion chamber 4, drawn from the outlet of compressor 1
Cooling air is led to cool down the bearing block 7 of 8 top of bearing.
Due to all being from blower outlet for the cooling air-flow of bearing block, temperature is higher, therefore in engine operation
In the process, poor to the cooling effect of bearing block, especially after engine speed reaches working speed, indoor combustion zone of burning
A large amount of thermal energy are radiated to burner inner liner, thermal energy quickly heated the cooling gas for flowing through burner inner liner, gas temperature caused to steeply rise,
Such gas flows through bearing block, easily leads to bearing block structure deformation, becomes large-sized.When the gap between bearing block and bearing becomes
When the distortion variation of big and contact surface, vibration values are increased with it at this；Bearing block overheat, the lubricating oil also resulted at bearing are cooling
Decreased effectiveness, after multiple heat run, bearing wear is serious, to need often to reprocess or replace bearing block.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved by the present invention is how to play preferable cooling for the bearing block at engine thermal end pieces
The engine bearing seat cooling structure of effect.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of engine bearing seat cooling structure, which is three
Layer cyclic structure, including supporting plate 11, external partition 12, middle partition 13, internal partition 14 and bearing 20；The internal partition 14, middle partition
13 and external partition 12 these three partitions internal channel 18, middle channel 17, outer tunnel 16 totally three layers of channel are formed in engine, it is interior logical
Road 18 is between internal partition 14 and combustion chamber 15, and middle channel 17 is between internal partition 14 and middle partition 13, and outer tunnel 16
Between middle partition 13 and external partition 12, top, middle part and the root of this three layers of channel difference connection bearing block 21, and with start
Machine is coaxial, positioned at the lower section of combustion chamber 15；Bearing block 21 is located at the top of bearing 20；What outer tunnel 16 and middle channel 17 connected is
The wheel hub of the intergrade of compressor 10, the intergrade is equipped with bleed hole 9, the branch positioned at 17 front end of outer tunnel 16 and middle channel
Plate 11 is separately connected internal partition 14, middle partition 13 and external partition 12；What the internal channel 18 connected is the outlet of compressor 10, institute
It states channel 17 and internal channel 18 passes through circumferentially uniformly distributed 19 connection of hole on internal partition 14；The internal partition 14 and middle partition 13
It is raised to 15 direction of combustion chamber in the position close to 21 pre-determined distance of bearing block.
Preferably, the material of the internal partition 14, middle partition 13 and external partition 12 is 1Cr11Ni2W2MoV, with a thickness of 1mm
Plate.
Preferably, the internal partition 14, middle partition 13 and external partition 12 all in a manner of electron beam welding one end with calm the anger
Machine 10 connects, and other end is connect with bearing block 21.
Preferably, between 12 3 internal partition 14, middle partition 13 and external partition partitions mutual normal direction spacing
For 5mm ± 1mm, internal partition 14 is 30mm ± 1mm at a distance from the normal direction between combustion chamber 15.
Preferably, totally 32, the bleed hole 9, aperture are Φ 3.
Preferably, 11 material of supporting plate is 1Cr11Ni2W2MoV, and quantity is circumferential uniformly 8, and axial length is
10mm, width 4mm are in oblong.
Preferably, 11 head of supporting plate and tail portion are handled with arc transition.
Preferably, hole 19 circumferentially uniformly distributed on the internal partition 14 is 36, and aperture is Φ 10.
Preferably, the radius of 13 protrusion of middle partition is twice of the radius of 14 protrusion of internal partition.
(3) beneficial effect
The invention proposes a kind of engine bearing seat cooling structure and cooling means, and the program is for engine thermal end
Bearing block at part has preferable cooling effect, by reducing the thermal force of bearing block, makes to be in engine working process
The bear vibration of bearing block inner cavity reduces, and plays the purpose of protection bearing, improves engine operation stability, extends making for bearing
Use the service life.Experiments have shown that engine bearing seat cooling structure provided by the invention is compared to existing conventional cooling structure, cooling effect
Fruit is able to ascend 10%-30%；Oil temperature can reduce 10 DEG C -20 DEG C at bearing；In engine working process, vibration it is comprehensive
2g-5g can be reduced by closing virtual value；Bearing life can be improved 10%-20%.
Detailed description of the invention
Fig. 1 is the engine bearing seat cooling structure form structure schematic diagram of conventional design；
Fig. 2 is engine bearing seat cooling structure schematic diagram provided by the invention.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to of the invention
Specific embodiment is described in further detail.
The invention proposes a kind of structures to have preferable cooling effect for the bearing block at engine thermal end pieces,
By reducing the thermal force of bearing block, reduces the bear vibration in engine working process in bearing block inner cavity, play guarantor
The purpose of bearing is protected, the service life for improving engine operation stability, extending bearing.
Engine bearing seat cooling structure provided by the invention is shellring shape structure, which is shellring shape structure,
Including supporting plate 11, external partition 12, middle partition 13, internal partition 14 and bearing 20, three partitions formed in engine internal channel 18,
Middle channel 17, outer tunnel 16 totally three layers of channel, between internal partition 14 and combustion chamber 15, middle channel 17 is located at interior internal channel 18
Between partition 14 and middle partition 13, outer tunnel 16 is between middle partition 13 and external partition 12；Distinguish connection axis in this three layers of channels
The top, middle part and root of seat 21 are held, and coaxial with engine, positioned at the lower section of combustion chamber 15.Bearing block 21 is in bearing 20
Top.What outer tunnel 16 and middle channel 17 connected is the intergrade of compressor 10, and the wheel hub of intergrade has bleed hole 9, is located at
The supporting plate 11 of 17 front end of outer tunnel 16 and middle channel has been separately connected internal partition 14, middle partition 13 and external partition 12；Internal channel 18
What is connected is the outlet of compressor 10, and middle channel 17 passes through circumferentially uniformly distributed 19 connection of hole on internal partition 14 with internal channel 18；
Internal partition 14 and middle partition 13 are raised to 15 direction of combustion chamber in the position close to bearing block 21.
The cooling method of engine bearing seat is carried out using the structure, comprising the following steps:
When engine enters working condition, engine bearing seat cooling structure provided by the invention is respectively from compressor 10
Middle part and exit bleed.Cooling air is flowed out from the intergrade of compressor 10 through the bleed hole 9 of wheel hub all the way, then through supporting plate 11
After respectively enter outer tunnel 16 and middle channel 17, into outer tunnel 16 cooling air be directly entered bearing block 21 root carry out it is cold
But, the cooling air in channel 17 goes back through hole 19 and internal channel 18 in addition to the middle part for entering bearing block 21 carries out cooling in
In addition all the way from compressor 10 export cooling air carry out heat exchange, due in middle channel 17 come from 10 intergrade of compressor
Cooling air temperature lower than the cooling air temperature exported from compressor 10 in internal channel 18, therefore by heat exchange can reduce come
The influence of the cooling air of the heat radiation inward passage 18 of spontaneous combustion room 15 lowers the gas flow temperature in internal channel 18, to improve
Cooling effect of the air-flow of internal channel 18 to 21 top of bearing block.The tail end of internal partition 14 and middle partition 13 is to 15 direction of combustion chamber
Protrusion, it is therefore an objective to which hot extrusion produced by the temperature difference of 13 liang of sidewinds of internal partition 14 and middle partition is offset in the thermal expansion of balancing axial
Compression, to improve the stability and safety of cooling structure provided by the invention.
It is illustrated below.
Bearing block cooling structure in certain engine is shellring shape structure, by internal partition 14, middle partition 13 and external partition
12 are constituted, and internal channel 18, middle channel 17, outer tunnel 16 totally three layers of channel are formed in engine, and connection is distinguished in this three layers of channels
Top, middle part and the root of bearing block 21, and it is coaxial with engine, positioned at the lower section of combustion chamber 15.Internal partition 14, middle partition 13
Material with external partition 12 is 1Cr11Ni2W2MoV, with a thickness of the plate of 1mm, one end and pressure all in a manner of electron beam welding
Mechanism of qi 10 connects, and other end is connect with bearing block 21.The spacing of mutual normal direction is 5mm ± 1mm between three partitions, interior
Partition 14 is 30mm ± 1mm at a distance from the normal direction between combustion chamber 15.What outer tunnel 16 and middle channel 17 connected is to calm the anger
The intergrade of machine 10, the wheel hub of intergrade have the consistent bleed hole 9 of circumferentially uniformly distributed size, and totally 32, bleed hole 9, aperture is
Φ3mm.Supporting plate 11 positioned at the front end in outer tunnel 16 and middle channel 17 is connected to internal partition 14, interval by electron beam welding mode
Plate 13 and external partition 12.11 material of supporting plate is 1Cr11Ni2W2MoV, and quantity is circumferential uniformly 8, axial length 10mm, width
4mm is in oblong, 11 head of supporting plate and tail portion 2 transition processing of circular arc R.What internal channel 18 connected is going out for compressor 10
Mouthful；With internal channel 18 by 36 circumferentially uniformly distributed 19 connection of hole, aperture is Φ 10 in middle channel 17；Internal partition 14 and middle partition
13 is raised to 15 direction of combustion chamber in the position close to bearing block 21, and the radius of 14 protrusion of internal partition is R10, middle 13 protrusion of partition
Radius be R20.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of engine bearing seat cooling structure, which is characterized in that the structure be shellring shape structure, including supporting plate (11),
External partition (12), middle partition (13), internal partition (14) and bearing (20)；The internal partition (14), middle partition (13 and external partition
(12) these three partitions form internal channel (18), middle channel (17), outer tunnel (16) totally three layers of channel, internal channel in engine
(18) between internal partition (14) and combustion chamber (15), middle channel (17) is located between internal partition (14) and middle partition (13),
Outer tunnel (16) between middle partition (13) and external partition (12), internal channel (18), middle channel (17), outer tunnel (16) this three
Top, middle part and the root of layer channel difference connection bearing block (21), and it is coaxial with engine, it is located under combustion chamber (15)
Side；Bearing block (21) is located at the top of bearing (20)；What outer tunnel (16) and middle channel (17) connected is in compressor (10)
The wheel hub of intercaste, the intergrade is equipped with bleed hole (9), is located at the supporting plate (11) of outer tunnel (16) and middle channel (17) front end
It is separately connected internal partition (14), middle partition (13) and external partition (12)；Internal channel (18) connection is compressor (10)
Outlet, the middle channel (17) and internal channel (18) pass through circumferentially uniformly distributed hole (19) connection on internal partition (14)；In described
Partition (14) and middle partition (13) are raised to combustion chamber (15) direction in the position close to bearing block (21) pre-determined distance.
2. engine bearing seat cooling structure as described in claim 1, which is characterized in that the internal partition (14), middle partition
(13) and the material of external partition (12) is 1Cr11Ni2W2MoV, the plate with a thickness of 1mm.
3. engine bearing seat cooling structure as described in claim 1, which is characterized in that the internal partition (14), middle partition
(13) it is connect with external partition (12) one end all in a manner of electron beam welding with compressor (10), other end and bearing block (21)
Connection.
4. engine bearing seat cooling structure as described in claim 1, which is characterized in that the internal partition (14), middle partition
(13) spacing of mutual normal direction is 5mm ± 1mm, internal partition (14) and combustion chamber between (12) three partitions of external partition
(15) distance of the normal direction between is 30mm ± 1mm.
5. engine bearing seat cooling structure as described in claim 1, which is characterized in that the bleed hole (9) totally 32, hole
Diameter is Φ 3mm.
6. engine bearing seat cooling structure as described in claim 1, which is characterized in that supporting plate (11) material is
1Cr11Ni2W2MoV, quantity are circumferential uniformly 8, axial length 10mm, width 4mm, are in oblong.
7. engine bearing seat cooling structure as described in claim 1, which is characterized in that supporting plate (11) head and tail portion
It is handled with arc transition.
8. engine bearing seat cooling structure as described in claim 1, which is characterized in that circumferential on the internal partition (14)
Uniformly distributed hole (19) is 36, and aperture is Φ 10mm.
9. engine bearing seat cooling structure as described in claim 1, which is characterized in that the half of middle partition (13) protrusion
Diameter is twice of the radius of internal partition (14) protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711158797.8A CN108131399B (en) | 2017-11-20 | 2017-11-20 | A kind of engine bearing seat cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711158797.8A CN108131399B (en) | 2017-11-20 | 2017-11-20 | A kind of engine bearing seat cooling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108131399A CN108131399A (en) | 2018-06-08 |
| CN108131399B true CN108131399B (en) | 2019-06-28 |
Family
ID=62389802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711158797.8A Active CN108131399B (en) | 2017-11-20 | 2017-11-20 | A kind of engine bearing seat cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108131399B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB609338A (en) * | 1946-03-11 | 1948-09-29 | Robert Clarkson Plumb | Improvements in or relating to means for removing dirt or solid particles from a fluid |
| GB609926A (en) * | 1946-03-25 | 1948-10-08 | Adrian Albert Lombard | Improvements in or relating to internal-combustion turbines |
| GB642506A (en) * | 1948-09-15 | 1950-09-06 | Havilland Engine Co Ltd | Improvements in or relating to gas turbines |
| US7082766B1 (en) * | 2005-03-02 | 2006-08-01 | General Electric Company | One-piece can combustor |
| US8794009B2 (en) * | 2012-01-31 | 2014-08-05 | United Technologies Corporation | Gas turbine engine buffer system |
| DE102012204162A1 (en) * | 2012-03-16 | 2013-09-19 | Siemens Aktiengesellschaft | Ring combustor bypass |
| EP2921779B1 (en) * | 2014-03-18 | 2017-12-06 | Ansaldo Energia Switzerland AG | Combustion chamber with cooling sleeve |
| US10024238B2 (en) * | 2014-04-03 | 2018-07-17 | United Technologies Corporation | Cooling system with a bearing compartment bypass |
| CN104296160A (en) * | 2014-09-22 | 2015-01-21 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Flow guide bush of combustion chamber of combustion gas turbine and with cooling function |
| CN104819016B (en) * | 2015-05-05 | 2016-09-21 | 中国航空动力机械研究所 | Turbine rear trunnion bearing, cooling means and turbofan |
-
2017
- 2017-11-20 CN CN201711158797.8A patent/CN108131399B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108131399A (en) | 2018-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1892000B (en) | Igniter tube and method of assembling same | |
| US8813502B2 (en) | Cooling structure of gas turbine combustor | |
| US9869479B2 (en) | Method for producing a near-surface cooling passage in a thermally highly stressed component, and component having such a passage | |
| US20120269649A1 (en) | Turbine blade with improved trailing edge cooling | |
| CN102459823B (en) | The parts of the housing of gas turbine, steam turbine or compressor and turbo machine | |
| US6595741B2 (en) | Pre-swirl nozzle carrier | |
| CN106460526A (en) | Turbine blades with optimized cooling | |
| JP5013186B2 (en) | Cooling system for the downstream cavity of the impeller of a centrifugal compressor | |
| US9188008B2 (en) | Gas turbine for aeronautic engines | |
| US20130216395A1 (en) | Gas turbine blade | |
| JP2015063991A (en) | Structure including cylinder head and secondary combustion chamber system | |
| JP6476516B2 (en) | Transition piece, combustor including the same, and gas turbine including the combustor | |
| CN205825114U (en) | There is the cannular combustion chamber of the gas turbine of self-cooling function | |
| JP2011513638A (en) | Turbine blades and associated turbines and turbo engines with end cooling | |
| CN106556030A (en) | Combustor fuel nozzle and its thermal protection structure | |
| KR102036846B1 (en) | Exhaust-gas turbocharger | |
| WO2009003350A1 (en) | A cylinder head of an air-cooling diesel engine | |
| CN106555617B (en) | A kind of turbo blade for having oblique bottom blowing type film cooling holes | |
| CN108131399B (en) | A kind of engine bearing seat cooling structure | |
| CN207813753U (en) | Turbine outer ring cooling structure, turbine structure and aero-engine | |
| CN107614835A (en) | Turbine rotor blade and gas turbine | |
| JP2016164416A (en) | Rotor for thermal turbomachine | |
| CN204227467U (en) | A kind of flame combustion chamber barrel structure | |
| CN108131203A (en) | A kind of engine shaft bearing cooling means | |
| TWI678463B (en) | Split ring and gas turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |