CN205370747U - Turbo charger midbody - Google Patents
Turbo charger midbody Download PDFInfo
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- CN205370747U CN205370747U CN201620064453.5U CN201620064453U CN205370747U CN 205370747 U CN205370747 U CN 205370747U CN 201620064453 U CN201620064453 U CN 201620064453U CN 205370747 U CN205370747 U CN 205370747U
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- diffuser
- positioning step
- diffusion
- diffusion plate
- windward side
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- 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
Abstract
The utility model belongs to the automobile engine turbo charger field, concretely relates to turbo charger midbody, including midbody body and diffusion board, midbody body and diffusion board integrated into one piece set up, are equipped with vaneless diffuser and vane diffuser on the diffusion board, and the tail end of vaneless diffuser meets with the front end of vane diffuser, and the vane diffuser includes a plurality of diffusion blades, and diffusion blade retention is at the diffusion board. The utility model has the advantages of reasonable design, the working process is reliable, and stability is high.
Description
Technical field
This utility model belongs to turbosupercharger of car engine field, is specifically related to a kind of turbocharger middle body.
Background technology
In recent years, the performance of turbocharger is developed greatly, but structurally do not change too much, supercharger reliability is still a great problem of puzzlement supercharger manufacturing enterprise, and TC bearings is a link the weakest in Reliability of Turbochargers, main Failure Mode is that thermic load causes that oil film can not effectively be set up, bearing dry friction and rapid failure.How effectively to cut off or to reduce the impact on intermediate of the turbine end heat, to be the key factor being related to supercharger reliability.On the extra high supercharger of the thermic load such as gasoline engine, passenger car, generally can adopt on middle case design water cooling plant, or heat shield isolation is set in turbine one end carry out the high-temp waste gas of since engine.This can effectively alleviate the impact on bearing of the turbine end heat really, but effect is little desirable.So, on the product that the thermic load such as agricultural machinery, engineering machinery is high, it is contemplated that reliability, just need to considering that other modes are come heat insulation, alleviating the impact on bearing of the turbine end thermic load by the Optimal improvements of structure is supercharger producer problem in the urgent need to address.And, currently, in order to adapt to higher emission request, Matching of Turbocharger develops to high pressure ratio, low discharge direction, also the corresponding growth of thermic load is brought, traditional heat insulation structural does not adapt to growing delivery temperature gradually, it is necessary to the heat insulation structural of turbocharger is optimized improvement, to adapt to growing heat insulation demand.
It addition, centrifugal compressor is as the very important ingredient of turbocharger, because its efficiency is high, pressure ratio is high, and simple in construction is widely used.Diffuser is as one of centrifugal compressor vitals, the quality of diffuser performance directly affects the performance of centrifugal compressor, vaneless diffuser is because of simple in construction, range of flow broadness is widely adopted, but, air-flow flows approximately along the track of log spiral in diffuser, and namely air current flow path is basically unchanged with tangential angle at arbitrary diameter place.Due to this feature, the glide path of air-flow is long, and flow losses are big, and efficiency is low, and diffuser exit circulation area is little, and diffusion ability is low.
On locomotive and Ship turbine supercharger, compressor adopts vaned diffuser, is typically under design conditions vaned diffuser 3%-5% higher than vaneless diffuser efficiency, but, if when rotating speed is certain, the flow flowing through compressor changes, then the flow angle of impeller outlet can change.This change will affect the incidence loss of diffuser vane import department, and increases along with the increase of deviation inlet blade angle of flow angle.Therefore, although the efficiency of vaned diffuser is higher than without blade profile in design discharge, but when flow increases or reduces, 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, airfoil type diffuser, but there is the defects such as operating characteristic is steep, processing technique is complicated, build-up curve curvature is discontinuous, efficiency is low.
Utility model content
The purpose of this utility model is to provide a kind of intermediate with cooling mechanism and series connection diffuser, diffuser is improved simultaneously, it is achieved the effect that diffuser extension pressur efficiency is high and diffusion scope is wide.
In order to realize the purpose of this utility model, be the technical scheme is that
A kind of turbocharger middle body, including 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 includes the vaneless diffuser near impeller bore and the vane diffuser away from impeller bore, the side edge of described vaneless diffuser and vane diffuser, described vaned diffuser includes some diffusion blades, and described diffusion blade is fixed on diffusion plate.
Preferably, described diffusion blade includes lee face, windward side, blade inlet edge and trailing edge, the molded line of described lee face and windward side is the curvature Smooth conic section without flex point, and lee face and windward side molded line are different curves, 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, described blade inlet edge, trailing edge molded line be circular arc, and the molded line of blade inlet edge, trailing edge is different circular arcs.
Preferably, the curvature extended line of described diffusion blade windward side cross section curve is tangent with the cross section of described gas compressor blade wheel bore circle.
Preferably, described intermediate is symmetrically arranged on two with some fin away from the outer wall of diffusion plate.
Preferably, described fin spaced set, described fin adds up to 12.
Preferably, the root of described 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 includes first step and second step, described positioning step is provided with cannelure, the interior circular diameter of described cannelure is identical with the outside diameter of first step, and described cannelure outside diameter is the meansigma methods of the outside diameter of the first positioning step and second step.
The beneficial effects of the utility model are:
(1) owing to intermediate of the present utility model, diffusion plate, diffuser are set to overall structure, therefore its parts are less, reduce error and the assembly difficulty of installation, improve installation accuracy and reliability.
(2) this utility model employs vaneless diffuser and the structure of vane diffuser series connection.During turbocharger operation, air first flows through vaneless diffuser through compressor impeller acting, then enters back into vane diffuser.The kinetic energy of air-flow is mainly changed into static pressure energy in vane diffuser.The existing vane diffuser diffusion degree of this structure is big and size is little, lose little, the high feature of efficiency again with or without leaf diffuser performance plateau, the feature that stable operation range is big.Being typically under design conditions its 3%-5% higher than the efficiency of vaneless diffuser, stable operation range is than vane diffuser big 10%.
(3) diffusion vane type line of the present utility model is the smooth conic section without flex point, and curvature is absent from abrupt change, and operating characteristic is mild, and processes simple, and work efficiency several types earlier above is high.
(4) after fin is set, increase the area of dissipation of end floating bearing place, intermediate whirlpool outer wall, the lost speed of high temperature that turbine end conduction comes is accelerated, decreases floating bearing and seal the thermic load at position, it is ensured that floating bearing and sealing ring place remain stable for reliable operating temperature.
(5) the seam end face that intermediate coordinates with volute is provided with cannelure, reduces contact area.According to thermodynamics conduction principle, two parts having temperature difference contacted with each other, its contact area is more little, and the speed of conduction heat is more slow.This arrangement reduces the heat of unit interval conduction, decrease the thermal deformation of union piece, prevent housing part from cracking, it is issued to effect of heat insulation at steady-working state, and also require that when electromotor stops suddenly and there is certain heat-blocking action, it is ensured that the temperature at floating bearing and sealing ring place is maintained at relatively low stable duty.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
Fig. 1 is the whirlpool end structure schematic diagram of turbocharger middle body of the present utility model；
Fig. 2 is the compressor end structure schematic diagram of turbocharger middle body of the present utility model；
Fig. 3 is the diffusion blade shape schematic diagram of turbocharger middle body of the present utility model；
Fig. 4 is the diffuser end view of turbocharger middle body of the present utility model；
Fig. 5 is the confined state schematic diagram of turbocharger middle body of the present utility model.
Wherein, 1, intermediate body, 2, diffusion plate, 3, fin, 3a, the curving of castings, 4, positioning step, 4a, the first positioning step, 4b, the second positioning step, 5, cannelure, 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.
Detailed description of the invention
Such as Fig. 1 and Fig. 2, a kind of turbocharger middle body, including 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 includes the vaneless diffuser 8 near 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 and the diffusion plate 2 that are wholely set make structure simplify, and decrease processing cost and process time, simplify assemble flow, it is ensured that the concentricity in hole and overall assembly precision, and can eliminate the noise produced between each parts.Diffuser includes 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, then entering back into vane diffuser 12, the kinetic energy of air-flow is mainly changed into static pressure energy in vane diffuser 12.The existing vane diffuser diffusion degree of diffuser of the present utility model is big and size is little, lose little, the high feature of efficiency is again with or without leaf diffuser performance plateau, and the feature that stable operation range is big, efficiency is high, and stability range is big.
Such as Fig. 3 and Fig. 4, diffusion blade 7 includes 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 curvature Smooth conic section without flex point, and lee face 7a and windward side 7b molded line are different curves, 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 arcs, windward side 7b type curvature of a curve extended line is tangent with the cross section of described impeller bore 6 circle.Diffusion vane type line of the present utility model is the smooth conic section without flex point, and curvature is absent from abrupt change, and air velocity, pressure distribution are uniform, and flow losses are little, and processes simple, and work efficiency is high.
Such as Fig. 1 and Fig. 2, intermediate body 1 is symmetrically arranged on two with some fin 3 near away from the outer wall expanding plate, and fin 3 spacing distance that each two is adjacent is equal, and fin 3 adds up to 12, namely both sides are respectively arranged with six fin 3, and the root of fin 3 is provided with curving of castings 3a.Curving of castings 3a can effectively prevent stress from concentrating.Fin 3 is correspondingly arranged at the floating bearing place of whirlpool end, after fin 3 is set, increase the area of dissipation of end floating bearing place, intermediate whirlpool outer wall, the lost speed of high temperature that turbine end conduction comes is accelerated, decrease floating bearing and seal the thermic load at position, it is ensured that floating bearing and sealing ring place remain stable for reliable operating temperature.
Such as Fig. 1 and Fig. 5, it is turbocharger that the assembly after volute 9 and compressor casing 10 is installed at intermediate two ends, 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 includes the first positioning step 4a and the second positioning step 4b, positioning step 4 is provided with cannelure 5, the interior circular diameter of cannelure 5 and the outside diameter of the first positioning step 4a are identical, and cannelure 5 outside diameter is the meansigma methods of the outside diameter of the first positioning step 4a and the second positioning step 4b.Intermediate body 1 and the contact area of volute 9 can be reduced by cannelure, reduce the heat of unit interval conduction, it is ensured that the temperature at floating bearing and sealing ring place is maintained at relatively low stable duty.
Should be appreciated that specific embodiment described above is only for explaining this utility model, be not used to limit this utility model.The apparent change extended out by spirit of the present utility model or variation are still among protection domain of the present utility model.
Claims (7)
1. a turbocharger middle body, it is characterized in that: include 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 includes the vaneless diffuser (8) near 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) includes 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 curvature Smooth conic section without flex point, and lee face (7a) and windward side (7b) molded line are different curves, 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 arcs.
3. a kind of turbocharger middle body according to claim 2, it is characterised in that: described windward side (7b) type curvature of a curve extended line is tangent with the cross section of described impeller bore (7) circle.
4. a kind of turbocharger middle body according to claim 1, it is characterised in that: described intermediate body (1) is symmetrically arranged on two with some fin (3) at the outer wall away from diffusion plate (2) one end.
5. a kind of turbocharger middle body according to claim 4, it is characterised in that: described fin (3) spacing distance that each two is adjacent is equal, and described fin (3) adds up to 12.
6. a kind of turbocharger middle body according to claim 4, it is characterised in that: the root of described 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) includes the first positioning step (4a) and the second positioning step (4b), described positioning step (4) is provided with cannelure (5), the interior circular diameter of described cannelure (5) and the outside diameter of the first positioning step (4a) are identical, described cannelure (5) outside diameter is the meansigma methods 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 |
|---|---|---|---|
| CN201620064453.5U CN205370747U (en) | 2016-01-21 | 2016-01-21 | Turbo charger midbody |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620064453.5U CN205370747U (en) | 2016-01-21 | 2016-01-21 | Turbo charger midbody |
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| Publication Number | Publication Date |
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| CN205370747U true CN205370747U (en) | 2016-07-06 |
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| CN201620064453.5U Active CN205370747U (en) | 2016-01-21 | 2016-01-21 | Turbo charger midbody |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508033A (en) * | 2016-01-21 | 2016-04-20 | 常州环能涡轮动力股份有限公司 | Turbocharger intermediate |
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2016
- 2016-01-21 CN CN201620064453.5U patent/CN205370747U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508033A (en) * | 2016-01-21 | 2016-04-20 | 常州环能涡轮动力股份有限公司 | Turbocharger intermediate |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |