CN209129685U - Variable-geometry mixed-flow turbocharger sealing structure - Google Patents
Variable-geometry mixed-flow turbocharger sealing structure Download PDFInfo
- Publication number
- CN209129685U CN209129685U CN201822059880.6U CN201822059880U CN209129685U CN 209129685 U CN209129685 U CN 209129685U CN 201822059880 U CN201822059880 U CN 201822059880U CN 209129685 U CN209129685 U CN 209129685U
- Authority
- CN
- China
- Prior art keywords
- cartridge housing
- small end
- big end
- ring cavity
- annular groove
- 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.)
- Withdrawn - After Issue
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 25
- 230000001914 calming effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001484259 Lacuna Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- 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 provides a kind of variable-geometry mixed-flow turbocharger sealing structure, including cartridge housing, nozzle vane axis, diffuser and insulated wall, insulated wall is fixed on the small end of cartridge housing, and nozzle vane axis is mounted in the shaft mounting hole of cartridge housing small end and one end passes through insulated wall；It is machined with U-shaped annular groove respectively in the big end and small end of cartridge housing, check valve body is installed in the U-shaped annular groove of the big end of cartridge housing；The gas passage of the U-shaped annular groove for being connected to check valve body and cartridge housing small end is machined on cartridge housing；Diffuser is mounted on the big end of cartridge housing, and big end ring cavity is formed with the U-shaped annular groove of cartridge housing big end, the small end and insulated wall of cartridge housing form small end ring cavity, the stomata of position face big end ring cavity is offered on diffuser, compressed gas enters big end ring cavity through air passing hole, and opens check valve body using pressure difference and enter small end ring cavity by gas passage.It can be effectively reduced the exhaust gas leakage of variable geometry turbocharger using above-mentioned the utility model.
Description
Technical field
The utility model belongs to internal combustion engine turbocharger technical field, more specifically, it is mixed to be related to a kind of variable-geometry
Flow seal structure of turbocharger.
Background technique
Exhaust-driven turbo-charger exhaust-gas turbo charger be diesel engine realize high power density, low oil consumption, low emission key core portion external member it
One.In order to adapt to Different Work Condition of Engine to the different demands of booster, Optimization of Diesel Engine low-load performance improves diesel engine combustion
Oily economy, the application of variable geometry turbocharger are a kind of trend of booster technology development.But with motor hand
The variation of condition, there are gaps between nozzle vane axis and cartridge housing, in variable geometry turbocharger operational process, due to
Gap position be easy to cause gas leakage, causes diesel engine cabin contaminated, also, long-play interstitial site carbon distribution, influences
The reliability service of nozzle vane axis.
Therefore, it is the exhaust gas leakage for reducing variable-geometry mixed-flow turbocharger, guarantees variable geometry turbocharger
Reliability service, designing a kind of efficient variable geometry turbocharger sealing structure is the key point to solve the above problems.
Utility model content
In view of the above problems, the purpose of the utility model is to provide a kind of sealings of variable-geometry mixed-flow turbocharger to tie
Structure, to solve the problems, such as poor sealing between nozzle vane axis and cartridge housing.
Variable-geometry mixed-flow turbocharger sealing structure provided by the utility model, including cartridge housing, nozzle vane axis,
Diffuser and insulated wall, insulated wall are fixed on the small end of cartridge housing, relief hole are offered in insulated wall, in the small end of cartridge housing
Shaft mounting hole is offered, nozzle vane axis is mounted in shaft mounting hole and one end passes through relief hole, and nozzle vane axis and axis are installed
Hole is clearance fit；In the big end and small end of cartridge housing it is machined with U-shaped annular groove respectively, in the U-shaped annular groove of the big end of cartridge housing
There are two valve mounting holes for symmetric position processing, are separately installed with check valve body in two valve mounting holes, and fix with snap ring；?
The gas passage of the U-shaped annular groove for communicating valve mounting hole Yu cartridge housing small end is machined on cartridge housing, in the work of gas passage
Sealing plug for sealed gas passageway is installed in skill hole；Diffuser is mounted on the end face of cartridge housing big end, and and bearing
The U-shaped annular groove of shell big end forms big end ring cavity, and the small end and insulated wall of cartridge housing form small end ring cavity, offer on diffuser
The stomata of position face big end ring cavity, the compressed gas for generator terminal of calming the anger enter in big end ring cavity through air passing hole, and utilize pressure difference
Check valve body is opened to enter in small end ring cavity by gas passage.
Additionally, it is preferred that structure be that piston ring of the two pieces with hasp is installed in the piston ring groove of nozzle vane axis, is taken
Button is staggered 180 °, meanwhile, the outer circumference surface of piston ring and the inner wall face contact of relief hole form sealing structure.
Furthermore preferred structure is, the flow area of stomata is greater than the area of gas passage.
Compared with prior art, variable-geometry mixed-flow turbocharger sealing structure provided by the utility model can be changed it is several
When what turbocharger operation, the compressed gas for generator terminal of calming the anger enters in cartridge housing small end ring cavity, and whirlpool end exhaust gas is prevented to enter, from
And effectively lower the exhaust gas leakage of booster；The sealing structure also can reduce nozzle vane axis and cartridge housing position of mounting hole
The carbon distribution at place reduces the stuck probability of nozzle vane axis, meanwhile, compressed gas can play cooling effect to nozzle vane axis,
To improve variable geometry turbocharger reliability of operation；The sealing structure is logical using the gas of the cartridge housing of booster
Road is not necessarily to external pipe, smart structural design, install convenient.
Detailed description of the invention
By reference to the following description in conjunction with the accompanying drawings and the contents of the claims, and with to the utility model more
Comprehensive understanding, other purposes and result of the utility model will be more clearly understood and understood.In the accompanying drawings:
Fig. 1 is the structural representation according to the variable-geometry mixed-flow turbocharger sealing structure of the utility model embodiment
Figure；
Fig. 2 is the structural schematic diagram according to the variable-geometry mixed-flow turbocharger cartridge housing of the utility model embodiment；
Fig. 3 is the partial enlarged view in Fig. 1 at A；
Fig. 4 is the partial enlarged view in Fig. 1 at B.
Appended drawing reference therein includes: compressor casing 1, cartridge housing 2, big end 21, small end 22, fuel gas air admission shell 3, diffuser
4, check valve body 5, sealing plug 6, nozzle vane axis 7, piston ring 8, insulated wall 9, gas passage 10.
Identical label indicates similar or corresponding feature or function in all the appended drawings.
Specific embodiment
Specific embodiment of the utility model is described in detail below with reference to attached drawing.
As Figure 1-Figure 4, the variable-geometry mixed-flow turbocharger sealing structure of the utility model embodiment, comprising:
Cartridge housing 2, diffuser 4, nozzle vane axis 7 and insulated wall 9, cartridge housing 2 is between compressor casing 1 and fuel gas air admission shell 3, axis
Holding shell 2 includes big end 21 and small end 22, and big end 21 is close to compressor casing 1, and for small end 22 close to fuel gas air admission shell 3, diffuser 4 is fixed
In the end face of big end 21, insulated wall 9 is fixed on small end 22, offers relief hole in insulated wall 9, offers axis peace in small end 22
Hole is filled, nozzle vane axis 7 is mounted on the relief hole that in shaft mounting hole and one end passes through insulated wall 9, and nozzle vane axis 7 and axis are installed
Interporal lacuna cooperation, nozzle vane axis 7 carry out rotation centered on shaft mounting hole, during nozzle vane 7 rotation of axis always
It is not contacted with the inner wall of relief hole.
It is machined with U-shaped annular groove respectively in big end 21 and small end 22, is machined with two in the symmetric position of the U-shaped annular groove of big end 21
A valve mounting hole, is separately installed with check valve body 5 in two valve mounting holes, and check valve body 5 is fixed on valve by snap ring and installs
In hole；Gas passage 10 is machined on cartridge housing 2, gas passage 10 is used for the U-shaped annular groove of communicating valve mounting hole and small end 22,
Sealing plug 6 for sealed gas passageway 10 is installed in the fabrication hole of gas passage 10, gas is closed by sealing plug 6
Body channel 10.
In order to offer stomata on diffuser 4 from 4 bleed of diffuser, the flow area of stomata is greater than gas passage 10
Area, the U-shaped annular groove of diffuser 4 and big end 21 forms big end ring cavity, and small end 22 and insulated wall 9 form small end ring cavity, stomata
Position face big end ring cavity, the compressed gas for generator terminal of calming the anger enters in big end ring cavity through air passing hole, and is opened using pressure difference
Check valve body 5 enters in small end ring cavity by gas passage 10.When being full of compressed gas in small end ring cavity, in small end ring cavity
Pressure is higher than the exhaust gas pressure in the gas passage of whirlpool end, and therefore, the compressed gas in small end ring cavity can prevent exhaust gas by nozzle
The sealing structure that sharf 7 and 9 relief hole of insulated wall are formed enters whirlpool end ring chamber, is effectively reduced the leakage rate of whirlpool end exhaust gas,
Large quantity of exhaust gas is avoided to leak.
In order to preferably prevent exhaust leak, work of the two pieces with hasp is installed in the piston ring groove of nozzle vane axis 7
Plug ring 8, two hasps are staggered 180 °, meanwhile, the outer circumference surface of piston ring 8 and the inner wall face contact of relief hole form and cooperate, and make
Nozzle vane axis 7 and the relief hole of insulated wall 9 form sealing structure, prevent turbine end exhaust gas from nozzle vane axis 7 and cartridge housing 2
Shaft mounting hole between clearance leakage, which can also reduce the product at nozzle vane axis 7 and shaft mounting hole position
Carbon reduces the stuck probability of nozzle vane axis 7.
More than, only specific embodiment of the present utility model, but protection scope of the utility model is not limited thereto,
Anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation or replace
It changes, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with claim
Subject to protection scope.
Claims (3)
1. a kind of variable-geometry mixed-flow turbocharger sealing structure, which is characterized in that including cartridge housing, nozzle vane axis, expand
Depressor and insulated wall, wherein the insulated wall is fixed on the small end of the cartridge housing, and resigning is offered in the insulated wall
Hole offers shaft mounting hole in the small end of the cartridge housing, and the nozzle vane axis is mounted in the shaft mounting hole and one end
Across the relief hole, the nozzle vane axis and the shaft mounting hole are clearance fit；
It is machined with U-shaped annular groove respectively in the big end and small end of the cartridge housing, in pair of the U-shaped annular groove of the big end of the cartridge housing
Claiming position processing, there are two valve mounting holes, are separately installed with check valve body in two valve mounting holes, and fix with snap ring；Institute
The gas passage that the U-shaped annular groove for being connected to the valve mounting hole and the cartridge housing small end is machined on cartridge housing is stated, in institute
State the sealing plug being equipped in the fabrication hole of gas passage for sealing the gas passage；
The diffuser is mounted on the end face of the cartridge housing big end, and forms big end with the U-shaped annular groove of the cartridge housing big end
Ring cavity, the small end of the cartridge housing and the insulated wall form small end ring cavity, and position face institute is offered on the diffuser
The compressed gas of the stomata for stating big end ring cavity, generator terminal of calming the anger enters in the big end ring cavity by the stomata, and utilizes pressure
Difference is opened the check valve body and is entered in the small end ring cavity by the gas passage.
2. variable-geometry mixed-flow turbocharger sealing structure according to claim 1, which is characterized in that in the nozzle
Piston ring of the two pieces with hasp is installed in the piston ring groove of sharf, the hasp is staggered 180 °, meanwhile, the piston ring
The inner wall face contact of outer circumference surface and the relief hole forms sealing structure.
3. variable-geometry mixed-flow turbocharger sealing structure according to claim 1, which is characterized in that the stomata
Flow area is greater than the area of the gas passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822059880.6U CN209129685U (en) | 2018-12-10 | 2018-12-10 | Variable-geometry mixed-flow turbocharger sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822059880.6U CN209129685U (en) | 2018-12-10 | 2018-12-10 | Variable-geometry mixed-flow turbocharger sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209129685U true CN209129685U (en) | 2019-07-19 |
Family
ID=67248437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822059880.6U Withdrawn - After Issue CN209129685U (en) | 2018-12-10 | 2018-12-10 | Variable-geometry mixed-flow turbocharger sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209129685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404060A (en) * | 2018-12-10 | 2019-03-01 | 重庆江增船舶重工有限公司 | Variable-geometry mixed-flow turbocharger sealing structure |
-
2018
- 2018-12-10 CN CN201822059880.6U patent/CN209129685U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404060A (en) * | 2018-12-10 | 2019-03-01 | 重庆江增船舶重工有限公司 | Variable-geometry mixed-flow turbocharger sealing structure |
| CN109404060B (en) * | 2018-12-10 | 2024-02-02 | 重庆江增船舶重工有限公司 | Variable geometry mixed flow turbocharger sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190719 Effective date of abandoning: 20240202 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190719 Effective date of abandoning: 20240202 |