CN105508033A - Turbocharger intermediate - Google Patents
Turbocharger intermediate Download PDFInfo
- Publication number
- CN105508033A CN105508033A CN201610045552.3A CN201610045552A CN105508033A CN 105508033 A CN105508033 A CN 105508033A CN 201610045552 A CN201610045552 A CN 201610045552A CN 105508033 A CN105508033 A CN 105508033A
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- CN
- China
- Prior art keywords
- diffuser
- positioning step
- diffusion plate
- diffusion
- windward side
- 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.)
- Pending
Links
- 238000009792 diffusion process Methods 0.000 claims abstract description 49
- 238000005266 casting Methods 0.000 claims description 5
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000007667 floating Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
Abstract
The invention belongs to the field of turbochargers of automobile engines and particularly relates to a turbocharger intermediate. The turbocharger intermediate comprises an intermediate body and a diffusion plate which are integrally formed, a vaneless diffuser and a vane diffuser are arranged on the diffusion plate, the tail end of the vaneless diffuser is connected with the front end of the vane diffuser, and the vane diffuser comprises a plurality of diffusion vanes fixed on the diffusion plate. The turbocharger intermediate is reasonable in structural design, reliable in operation process and high in stability.
Description
Technical field
The invention belongs to turbosupercharger of car engine field, be specifically related to a kind of turbocharger middle body.
Background technique
In recent years, the performance of turbosupercharger is developed greatly, but structurally do not change too much, pressurized machine reliability is still a great problem of puzzlement pressurized machine manufacturing enterprise, and TC bearings is a link the weakest in Reliability of Turbochargers, main Failure Mode is that heat load causes oil film effectively not set up, bearing dry friction and rapid failure.How effectively cutting off or to reduce turbine end heat to the impact of intermediate, is the key factor being related to pressurized machine reliability.On the extra high pressurized machine of the heat load such as petrol engine, passenger car, generally can adopt and design water cooling plant on middle case, or the high-temp waste gas of thermal shield isolation from motor is set in turbine one end.This effectively can alleviate the impact of turbine end heat on bearing really, but effect is little desirable.Like this, on the product that the heat load such as agricultural machinery, engineering machinery is high, consider reliability, just need consider that other modes are come heat insulation, alleviating the impact of turbine end heat load on bearing by the Optimal improvements of structure is pressurized machine producer problem in the urgent need to address.And, current, in order to adapt to higher emission request, Matching of Turbocharger is to high pressure ratio, small flow future development, also the corresponding growth of heat load is brought, traditional heat-insulating structure can not adapt to growing delivery temperature gradually, needs to be optimized improvement to the heat-insulating structure of turbosupercharger, to adapt to growing heat insulation demand.
In addition, centrifugal compressor is as the very important constituent element of turbosupercharger, and because its efficiency is high, pressure ratio is high, and structure is simply widely used.Diffuser is as one of centrifugal compressor vitals, the quality of diffuser performance directly affects the performance of centrifugal compressor, vaneless diffuser because of structure simple, range of flow broadness is widely adopted, but, air-flow approximate track along log spiral in Diffuser flows, namely air current flow path arbitrary diameter place and tangential angle substantially constant.Due to this feature, the glide path of air-flow is long, and flow losses are large, and efficiency is low, and diffuser exit circulation area is little, and diffusion ability is low.
On locomotive and Ship turbine pressurized machine, gas compressor adopts vaned diffuser, general under design conditions vaned diffuser than vaneless diffuser efficiency height 3%-5%, but, if when rotating speed is certain, the flow flowing through gas compressor changes, then the flow angle of impeller outlet can change.This change will affect the incidence loss of diffuser vane inlet, and increases along with the increase departing from inlet blade angle of flow angle.Therefore, although the efficiency of vaned diffuser in design discharge higher than without blade profile, when flow increases or reduce, very violent by what reduce, so the high efficiency range of operation of vaned diffuser is limited.
At present, turbocharger diffuser blade principal mode has the structures such as flat plate diffuser, triangle Diffuser, circular arc Diffuser, wing blade Diffuser, but there is the defects such as performance characteristic is steep, processing technology is complicated, build-up curve curvature is discontinuous, efficiency is low.
Summary of the invention
The object of this invention is to provide a kind of intermediate with cooling mechanism and series connection Diffuser, Diffuser is improved simultaneously, realize the effect that Diffuser extension pressur efficiency is high and diffusion scope is wide.
In order to realize object of the present invention, the technological scheme adopted is:
A kind of turbocharger middle body, comprise intermediate body, one end of described intermediate body is provided with diffusion plate, described intermediate body and diffusion plate are formed in one setting, the center of described diffusion plate is provided with the gas compressor blade wheel bore for installing compressor impeller, described diffusion plate is provided with Diffuser, described Diffuser comprises near the vaneless diffuser of impeller bore and the vane diffuser away from impeller bore, the side edge of described vaneless diffuser and vane diffuser, described vaned diffuser comprises some diffusion blades, and described diffusion blade is fixed on diffusion plate.
Preferably, described diffusion blade comprises lee face, windward side, blade inlet edge and trailing edge, the molded line of described lee face and windward side is the quadratic curve of curvature Smooth without flex point, and lee face and windward side molded line are different curve, blade inlet edge is positioned at the front end of lee face and windward side, trailing edge is positioned at the rear end of lee face and windward side, and the molded line of described blade inlet edge, trailing edge is circular arc, and the molded line of blade inlet edge, trailing edge is different circular arc.
Preferably, the curvature elongation line of described diffusion blade windward side cross section curve and the cross section of described gas compressor blade wheel bore are justified tangent.
Preferably, described intermediate is provided with some radiating fin away from the outer wall bilateral symmetry of diffusion plate.
Preferably, described radiating fin spaced set, described radiating fin adds up to 12.
Preferably, the root of described radiating fin is provided with the curving of castings.
Preferably, described intermediate is provided with the positioning step for installing volute away from one end of diffusion plate, described positioning step comprises first step and second step, described positioning step is provided with circular groove, the interior circular diameter of described circular groove is identical with the outside diameter of first step, and described circular groove outside diameter is the mean value of the outside diameter of the first positioning step and second step.
The invention has the beneficial effects as follows:
(1) because intermediate of the present invention, diffusion plate, Diffuser are set to overall structure, therefore its component are less, reduce error and the assembling difficulty of installation, improve installation precision and reliability.
(2) present invention uses the structure of vaneless diffuser and vane diffuser series connection.During turbocharger operation, air first flows through vaneless diffuser through compressor impeller acting, and then enters vane diffuser.The kinetic energy of air-flow mainly changes static pressure energy in vane diffuser.This structure existing vane diffuser diffusion degree is large and size is little, and lose little, the feature that efficiency is high has again vaneless diffuser performance curve smooth, the feature that stable operation range is large.General under design conditions it than the efficiency height 3%-5% of vaneless diffuser, stable operation range larger than vane diffuser 10%.
(3) diffusion vane type line of the present invention is the smooth quadratic curve without flex point, and curvature does not exist abrupt change, and performance characteristic is mild, and processing is simple, and the comparatively front several types of working efficiency is high.
(4) after radiating fin is set, increase the heat diffusion area of end floating bearing place, intermediate whirlpool outer wall, make turbine end conduct the high temperature of coming speed of scattering and disappearing to accelerate, decrease the heat load at floating bearing and sealing position, ensure that floating bearing and seal ring place keep reliable and stable operating temperature.
(5) the seam end face that intermediate coordinates with volute is provided with circular groove, reduces area of contact.According to thermomechanics conduction principle, two parts having temperature difference contacted with each other, its area of contact is less, and the speed of heat conduction is slower.This arrangement reduces the heat of unit time conduction, decrease the thermal distortion of union piece, prevent housing part from cracking, effect of heat insulation is issued at steady-working state, and also require that when engine sudden parking there is certain heat-blocking action, ensure that the temperature at floating bearing and seal ring place remains on lower stable working state.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the whirlpool end structure schematic diagram of turbocharger middle body of the present invention;
Fig. 2 is the gas compressor end structure schematic diagram of turbocharger middle body of the present invention;
Fig. 3 is the diffusion blade shape schematic diagram of turbocharger middle body of the present invention;
Fig. 4 is the Diffuser end view of turbocharger middle body of the present invention;
Fig. 5 is the assembling condition schematic diagram of turbocharger middle body of the present invention.
Wherein, 1, intermediate body, 2, diffusion plate, 3, radiating fin, 3a, the curving of castings, 4, positioning step, 4a, the first positioning step, 4b, the second positioning step, 5, circular groove, 6, impeller bore, 7, diffusion blade, 7a, lee face, 7b, windward side, 7c, blade inlet edge, 7d, trailing edge, 8, vaneless diffuser, 9, volute, 10, compressor casing, 11 impellers, 12, vane diffuser.
Embodiment
As Fig. 1 and Fig. 2, a kind of turbocharger middle body, comprise intermediate body 1, one end of intermediate body 1 is provided with diffusion plate 2, described intermediate body 1 and diffusion plate 2 are formed in one setting, the center of described diffusion plate 2 is provided with the impeller bore 6 for installing impeller 11, described diffusion plate 2 is provided with Diffuser, Diffuser comprises near the vaneless diffuser 8 of impeller bore 6 and the vane diffuser 12 away from impeller bore 6, the side edge of vaneless diffuser 8 and vane diffuser 12, vane diffuser 12 comprises some diffusion blades 7, and diffusion blade 7 is fixed on diffusion plate 2.The intermediate body 1 be wholely set and diffusion plate 2 make designs simplification, decrease processing cost and process time, simplify assemble flow, ensure the concentricity in hole and overall assembly precision, and can eliminate the noise produced between each parts.Diffuser comprises vaneless diffuser 8 and vane diffuser 12, the tail end of vaneless diffuser 8 connects with the front end of vane diffuser 12, form cascaded structure, namely diffusion blade 7 region forms vane diffuser 12, impeller bore 6 forms vaneless diffuser 8 to the region of the most inside edge of diffusion blade 7, during turbocharger operation, air does work through compressor impeller 11 and first flows through vaneless diffuser 8, and then entering vane diffuser 12, the kinetic energy of air-flow mainly changes static pressure energy in vane diffuser 12.Diffuser of the present invention existing vane diffuser diffusion degree is large and size is little, and lose little, the feature that efficiency is high has again vaneless diffuser performance curve smooth, the feature that stable operation range is large, and efficiency is high, and stability range is large.
As Fig. 3 and Fig. 4, diffusion blade 7 comprises lee face 7a, windward side 7b, blade inlet edge 7c and trailing edge 7d, the molded line of lee face 7a and windward side 7b is the quadratic curve of curvature Smooth without flex point, and lee face 7a and windward side 7b molded line are different curve, blade inlet edge 7c is positioned at the front end of lee face 7a and windward side 7b, trailing edge 7d is positioned at the rear end of lee face 7a and windward side 7b, blade inlet edge 7c, the molded line of trailing edge 7d is circular arc, and the molded line of blade inlet edge 7c and trailing edge 7d is different circular arc, the cross section circle of windward side 7b type curvature of a curve elongation line and described impeller bore 6 is tangent.Diffusion vane type line of the present invention is the smooth quadratic curve without flex point, and curvature does not exist abrupt change, and airspeed, pressure distribution are even, and flow losses are little, and processing is simple, and working efficiency is high.
As Fig. 1 and Fig. 2, intermediate body 1 is provided with some radiating fin 3 near away from the outer wall bilateral symmetry expanding plate, and every two adjacent radiating fin 3 spans are equal, and radiating fin 3 adds up to 12, namely respectively there are six radiating fin 3 both sides, and the root of radiating fin 3 is provided with curving of castings 3a.Curving of castings 3a can effectively prevent stress from concentrating.Radiating fin 3 correspondence is arranged on the floating bearing place of whirlpool end, after radiating fin 3 is set, increase the heat diffusion area of end floating bearing place, intermediate whirlpool outer wall, make turbine end conduct the high temperature of coming speed of scattering and disappearing to accelerate, decrease the heat load at floating bearing and sealing position, ensure that floating bearing and seal ring place keep reliable and stable operating temperature.
As Fig. 1 and Fig. 5, the assembly that intermediate two ends are installed after volute 9 and compressor casing 10 is turbosupercharger, intermediate body 1 is provided with the positioning step 4 for installing volute 9 on the end face of the one end away from diffusion plate 2, positioning step 4 comprises the first positioning step 4a and the second positioning step 4b, positioning step 4 is provided with circular groove 5, the interior circular diameter of circular groove 5 is identical with the outside diameter of the first positioning step 4a, and circular groove 5 outside diameter is the mean value of the outside diameter of the first positioning step 4a and the second positioning step 4b.The area of contact of intermediate body 1 and volute 9 can be reduced by circular groove, reduce the heat of unit time conduction, ensure that the temperature at floating bearing and seal ring place remains on lower stable working state.
Should be appreciated that specific embodiment described above only for explaining the present invention, being not intended to limit the present invention.Still be among protection scope of the present invention by spirit institute's apparent change of extending out of the present invention or change.
Claims (7)
1. a turbocharger middle body, it is characterized in that: comprise intermediate body (1), one end of described intermediate body (1) is provided with diffusion plate (2), described intermediate body (1) and diffusion plate (2) are formed in one setting, the center of described diffusion plate (2) is provided with the impeller bore (6) for installing impeller (11), described diffusion plate (2) is provided with Diffuser, described Diffuser comprises near the vaneless diffuser (8) of impeller bore (6) and the vane diffuser (12) away from impeller bore (6), the side edge of described vaneless diffuser (8) and vane diffuser (12), described vane diffuser (12) comprises some diffusion blades (7), described diffusion blade (7) is fixed on diffusion plate (2).
2. a kind of turbocharger middle body according to claim 1, it is characterized in that: described diffusion blade (7) comprises lee face (7a), windward side (7b), blade inlet edge (7c) and trailing edge (7d), the molded line of described lee face (7a) and windward side (7b) is the quadratic curve of curvature Smooth without flex point, and lee face (7a) and windward side (7b) molded line are different curve, blade inlet edge (7c) is positioned at the front end of lee face (7a) and windward side (7b), described trailing edge (7d) is positioned at the rear end of lee face (7a) and windward side (7b), described blade inlet edge (7c), the molded line of trailing edge (7d) is circular arc, and the molded line of blade inlet edge (7c) and trailing edge (7d) is different circular arc.
3. a kind of turbocharger middle body according to claim 2, is characterized in that: the cross section circle of described windward side (7b) type curvature of a curve elongation line and described impeller bore (7) is tangent.
4. a kind of turbocharger middle body according to claim 1, is characterized in that: described intermediate body (1) is provided with some radiating fin (3) in the outer wall bilateral symmetry away from diffusion plate (2) one end.
5. a kind of turbocharger middle body according to claim 4, is characterized in that: every two adjacent described radiating fin (3) spans are equal, and described radiating fin (3) adds up to 12.
6. a kind of turbocharger middle body according to claim 4, is characterized in that: the root of described radiating fin (3) is provided with the curving of castings (3a).
7. a kind of turbocharger middle body according to claim 1, it is characterized in that: described intermediate body (1) is provided with for installing volute (9) positioning step (4) on the end face away from diffusion plate (2) one end, described positioning step (4) comprises the first positioning step (4a) and the second positioning step (4b), described positioning step (4) is provided with circular groove (5), the interior circular diameter of described circular groove (5) is identical with the outside diameter of the first positioning step (4a), described circular groove (5) outside diameter is the mean value of the outside diameter of the first positioning step (4a) and the second positioning step (4b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610045552.3A CN105508033A (en) | 2016-01-21 | 2016-01-21 | Turbocharger intermediate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610045552.3A CN105508033A (en) | 2016-01-21 | 2016-01-21 | Turbocharger intermediate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105508033A true CN105508033A (en) | 2016-04-20 |
Family
ID=55716276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610045552.3A Pending CN105508033A (en) | 2016-01-21 | 2016-01-21 | Turbocharger intermediate |
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| Country | Link |
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| CN (1) | CN105508033A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388038A (en) * | 2022-09-22 | 2022-11-25 | 杭州华翊科技有限公司 | Diffuser |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429878A (en) * | 2008-12-17 | 2009-05-13 | 陈发谦 | Turbocharger |
| CN202170894U (en) * | 2011-07-26 | 2012-03-21 | 北京绿创环保集团有限公司 | Short-vane type diffuser |
| CN102852626A (en) * | 2012-08-28 | 2013-01-02 | 常州市索特动力工程有限公司 | Synergistic turbocharger with gradual change air flue |
| CN203948161U (en) * | 2014-05-14 | 2014-11-19 | 南通市嘉诚机械有限公司 | A kind of intermediate of turbosupercharger |
| CN204371485U (en) * | 2014-12-12 | 2015-06-03 | 常州环能涡轮动力股份有限公司 | With self cooling turbocharger middle body |
| CN205370747U (en) * | 2016-01-21 | 2016-07-06 | 常州环能涡轮动力股份有限公司 | Turbo charger midbody |
-
2016
- 2016-01-21 CN CN201610045552.3A patent/CN105508033A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429878A (en) * | 2008-12-17 | 2009-05-13 | 陈发谦 | Turbocharger |
| CN202170894U (en) * | 2011-07-26 | 2012-03-21 | 北京绿创环保集团有限公司 | Short-vane type diffuser |
| CN102852626A (en) * | 2012-08-28 | 2013-01-02 | 常州市索特动力工程有限公司 | Synergistic turbocharger with gradual change air flue |
| CN203948161U (en) * | 2014-05-14 | 2014-11-19 | 南通市嘉诚机械有限公司 | A kind of intermediate of turbosupercharger |
| CN204371485U (en) * | 2014-12-12 | 2015-06-03 | 常州环能涡轮动力股份有限公司 | With self cooling turbocharger middle body |
| CN205370747U (en) * | 2016-01-21 | 2016-07-06 | 常州环能涡轮动力股份有限公司 | Turbo charger midbody |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115388038A (en) * | 2022-09-22 | 2022-11-25 | 杭州华翊科技有限公司 | Diffuser |
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Application publication date: 20160420 |
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