CN106368984B - A kind of controllable deflation structure of centrifugal compressor diffuser upper wall and implementation method - Google Patents
A kind of controllable deflation structure of centrifugal compressor diffuser upper wall and implementation method Download PDFInfo
- Publication number
- CN106368984B CN106368984B CN201610917266.1A CN201610917266A CN106368984B CN 106368984 B CN106368984 B CN 106368984B CN 201610917266 A CN201610917266 A CN 201610917266A CN 106368984 B CN106368984 B CN 106368984B
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- compressor
- deflation
- upper wall
- primary blades
- diffuser
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The purpose of the present invention is to provide a kind of controllable deflation structure of centrifugal compressor diffuser upper wall and implementation methods, including compressor impeller, primary blades, splitterr vanes, compressor casing, spiral case, compressor impeller is mounted in compressor casing, primary blades are installed on compressor impeller, splitterr vanes are installed between primary blades and primary blades, spiral case is communicated with compressor casing, it is diffuser between impeller outlet and volute inlet, 4 deflation ducts are along the circumferential direction uniformly arranged at diffuser upper wall, got up by ring pipe connection in 4 deflation ducts, the bleeder pipe communicated with atmosphere is set on ring pipe, deflation control valve is set on bleeder pipe.The present invention is drawn out to this fraction of the formation boundary layer separation at diffuser upper wall surface in atmosphere using the pressure difference inside compressor with atmosphere, realizes the inhibition to boundary layer separation, it is steady to achieve the purpose that compressor expands.
Description
Technical field
The present invention relates to a kind of turbocharger, the specifically compressor of turbocharger.
Background technique
The stable operation range of turbocharger air compressor has certain limitations, when compressor flow is less than a certain numerical value,
Compressor enters irregular operation state, and compressor efficiency reduces rapidly at this time, compressor can be made to damage when serious.
Summary of the invention
The purpose of the present invention is to provide reached by the boundary layer separation in control diffuser expand steady purpose it is a kind of from
The controllable deflation structure of heart compressor diffuser upper wall and implementation method.
The object of the present invention is achieved like this:
A kind of controllable deflation structure of centrifugal compressor diffuser upper wall of the present invention, including compressor impeller, primary blades, shunting
Blade, compressor casing, spiral case, compressor impeller are mounted in compressor casing, and primary blades, main lobe are installed on compressor impeller
Splitterr vanes are installed, spiral case is communicated with compressor casing, is diffusion between impeller outlet and volute inlet between piece and primary blades
Device, it is characterized in that: being along the circumferential direction uniformly arranged 4 deflation ducts at diffuser upper wall, 4 deflation ducts pass through ring pipe
Connection is got up, and the bleeder pipe communicated with atmosphere is arranged on ring pipe, deflation control valve is arranged on bleeder pipe.
A kind of controllable deflation structure of centrifugal compressor diffuser upper wall of the present invention can also include:
1, deflation duct is mounted on the casing circumference of 105% impeller diameter, and the installation direction in deflation duct is tangential side
To, and angle with horizontal plane is 40 °.
2, processed at the upper wall inner surface for the diffuser that every place is connected with deflation duct it is fluted, groove be in tapered knot
Structure, the corresponding deflation duct of groove most narrow end are connected.
3, the area of section in deflation duct is 1% of area at volute inlet, and the caliber of ring pipe is deflation duct aperture
2 times.
A kind of centrifugal compressor diffuser upper wall of the present invention is controllably deflated implementation method, it is characterized in that: using having as follows
The centrifugal compressor of controllable deflation structure: it including compressor impeller, primary blades, splitterr vanes, compressor casing, spiral case, calms the anger
Machine impeller is mounted in compressor casing, and primary blades are installed on compressor impeller, and installation shunts leaf between primary blades and primary blades
Piece, spiral case are communicated with compressor casing, are diffuser between impeller outlet and volute inlet, it is characterized in that: in diffuser upper wall
Place is along the circumferential direction uniformly arranged 4 deflation ducts, and 4 deflation ducts are got up by ring pipe connection, on ring pipe setting and
Deflation control valve is arranged on bleeder pipe for the bleeder pipe that atmosphere communicates；
The performance plot for determining compressor determines that deflate unlatching boundary and deflation terminate boundary according to performance plot, works as internal combustion engine
When with booster combined operating, the revolving speed and rate of discharge of compressor are monitored, when the combined operating of compressor and internal combustion engine clicks through
Enter to deflate and open boundary, deflation control valve is started to work, and adjusts blow off pressure P according to compressor current rotating speedf, deflation starts；
The revolving speed and rate of discharge for continuing monitoring compressor terminate side when the combined operating of compressor and internal combustion engine point is moved to deflation
Boundary, deflation control valve power cut-off, deflation course terminate.
Controllably deflation implementation method can also include: a kind of centrifugal compressor diffuser upper wall of the present invention
1, it is 5% surge margin line that boundary is opened in the deflation, and deflating and terminating boundary is 8% surge margin line.
Present invention has an advantage that pressure difference of the present invention using compressor inside and atmosphere, at diffuser upper wall surface
This fraction of formation boundary layer separation be drawn out in atmosphere, realize the inhibition to boundary layer separation, reach compressor
Expand steady purpose.
Detailed description of the invention
Fig. 1 a is half sectional view of the invention, and Fig. 1 b is the partial schematic diagram of Fig. 1 a；
Fig. 2 is top view of the invention；
Fig. 3 is groove structure schematic diagram；
Fig. 4 a is that mobility status, Fig. 4 b are compressor of the present invention close to common compressor in diffuser at the nearly stall margin
Mobility status in diffuser at stall margin.
Specific embodiment
It illustrates with reference to the accompanying drawing and the present invention is described in more detail:
In conjunction with Fig. 1 a- Fig. 4 b, the present invention includes that the air compressor structure of controllable deflation structure specifically includes that compressor casing
11, compressor impeller 12, primary blades 13, splitterr vanes 14, spiral case 15.Compressor impeller 12 is mounted in compressor casing 11,
Primary blades 13 are installed on compressor impeller 12, splitterr vanes 14 are installed between primary blades 13 and primary blades 13, diffuser 16 is leaf
Flow region between volute inlet 18 is arrived in wheel outlet 17.
Along the circumferential direction uniformly addition 4 01,4, deflation ducts deflation duct 01 passes through ring at 16 upper wall of diffuser
Shape pipe 02 connects, and is connected by bleeder pipe 04 with atmosphere, and deflation control valve 03 is housed on bleeder pipe 04.
01 one end of deflation duct is connected to the inner surface of 16 upper wall of diffuser, and the other end is connected to ring pipe 02, by putting
Stomata road 01 is connected to compressor with ring pipe 02.Wherein, the installation site in deflation duct 01, channel diameter, duct number with
And the uniformity can be adjusted according to the actual situation.
Deflation duct 01 in the present invention is mounted at the casing of 105% impeller diameter, the installation direction in deflation duct 01
For tangential direction, and angle with horizontal plane is 40 °.It is processed at the upper wall inner surface for the diffuser 16 being connected with deflation duct 01
There are four groove 05, the shape and depth of groove 05 are determined according to practical air compressor structure.Further groove of the present invention is in tapered configuration,
Groove most narrow end is connected with deflation duct 01.
The area of section in deflation duct 01 is 1% of area at volute inlet 18 in the present invention.The caliber of ring pipe 02 is
2 times of 01 aperture of deflation duct.
Deflation control valve 03 is the solenoid valve of adjustable blow off pressure, and it is each that pressure regulation spectrum can satisfy compressor
The requirement of load.
Deflation operating point should be determined according to specific model.In the present invention have 5% surge margin point start deflate (put
Gas beginning boundary), stop deflating and (deflating and terminate boundary) when surge margin is greater than 8%.
The blow off pressure should determine respectively that the maximum pressure boost of such as corresponding revolving speed is according to compressor different rotating speeds
Pmax(units MPa), then the present invention in blow off pressure Pf=Pmax-0.1。
Fig. 4 a is common compressor mobility status in diffuser 16 at the nearly stall margin, upper at impeller outlet 17
Wall surface will appear flow separation whirlpool 21, and development, the enlarged meeting of this flow separation induce compressor and surge occur, and Fig. 4 b is the present invention
Compressor mobility status in diffuser at the nearly stall margin, in 16 upper wall surface open pores road 01 of diffuser, separation vortex 21
Compressor is drawn by deflation duct 01, realizes the purpose of extension compressor running boundary.
A kind of detailed process of the controllable deflation implementation method of centrifugal compressor diffuser upper wall of the present invention are as follows:
Compressor is tested first, determines the performance plot of compressor, is determined to deflate according to performance plot and opens boundary
(5% surge margin line) and termination boundary (8% surge margin line) of deflating.When internal combustion engine and booster combined operating, monitoring
The revolving speed and rate of discharge of compressor open boundary when the combined operating of compressor and internal combustion engine point enters deflation, control of deflating
Valve 13 is started to work, and adjusts blow off pressure P according to compressor current rotating speedf(Pmax- 0.1), deflation starts；Continue monitoring to calm the anger
The revolving speed and rate of discharge of machine terminate boundary, deflation control valve when the combined operating of compressor and internal combustion engine point is moved to deflation
13 power cut-offs, deflation course terminate.
Claims (2)
- The implementation method 1. a kind of centrifugal compressor diffuser upper wall is controllably deflated, it is characterized in that: using having controllable deflate as follows The centrifugal compressor of structure: including compressor impeller, primary blades, splitterr vanes, compressor casing, spiral case, compressor impeller peace In compressor casing, primary blades are installed on compressor impeller, splitterr vanes are installed between primary blades and primary blades, spiral case with Compressor casing communicates, and is diffuser between impeller outlet and volute inlet, it is characterized in that: the circumferentially side at diffuser upper wall To 4 deflation ducts are uniformly arranged, 4 deflation ducts are got up by ring pipe connection, and setting is communicated with atmosphere on ring pipe Deflation control valve is arranged on bleeder pipe for bleeder pipe；The performance plot for determining compressor determines that deflate unlatching boundary and deflation terminate boundary according to performance plot, when internal combustion engine and increasing When depressor combined operating, the revolving speed and rate of discharge of compressor are monitored, is put when the combined operating of compressor and internal combustion engine point enters Gas opens boundary, and deflation control valve is started to work, and adjusts blow off pressure P according to compressor current rotating speedf, deflation starts；Continue The revolving speed and rate of discharge for monitoring compressor terminate boundary when the combined operating of compressor and internal combustion engine point is moved to deflation, put Gas control valve power cut-off, deflation course terminate.
- The implementation method 2. a kind of centrifugal compressor diffuser upper wall according to claim 1 is controllably deflated, it is characterized in that: institute Stating deflation and opening boundary is 5% surge margin line, and deflating and terminating boundary is 8% surge margin line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610917266.1A CN106368984B (en) | 2016-10-21 | 2016-10-21 | A kind of controllable deflation structure of centrifugal compressor diffuser upper wall and implementation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610917266.1A CN106368984B (en) | 2016-10-21 | 2016-10-21 | A kind of controllable deflation structure of centrifugal compressor diffuser upper wall and implementation method |
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| Publication Number | Publication Date |
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| CN106368984A CN106368984A (en) | 2017-02-01 |
| CN106368984B true CN106368984B (en) | 2019-02-01 |
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| CN201610917266.1A Active CN106368984B (en) | 2016-10-21 | 2016-10-21 | A kind of controllable deflation structure of centrifugal compressor diffuser upper wall and implementation method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963490B (en) * | 2020-08-07 | 2022-06-21 | 中国北方发动机研究所(天津) | Vibration suppression structure of vane diffuser of turbocharger |
| CN118499270A (en) * | 2024-07-22 | 2024-08-16 | 潍坊富源增压器有限公司 | Axial force balancing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220819A (en) * | 2006-12-07 | 2008-07-16 | 株式会社丰田自动织机 | Centrifugal compressor |
| CN202280642U (en) * | 2011-09-08 | 2012-06-20 | 上海中科高等研究院 | Device for expanding stable running area of centrifugal compressor and centrifugal compressor |
| CN103174678A (en) * | 2013-03-26 | 2013-06-26 | 哈尔滨工程大学 | Centrifugal compressor air guiding recycling structure with multiple channels |
| CN204532969U (en) * | 2014-12-26 | 2015-08-05 | 珠海格力电器股份有限公司 | Diffuser structure applied to compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0223756D0 (en) * | 2002-10-14 | 2002-11-20 | Holset Engineering Co | Compressor |
-
2016
- 2016-10-21 CN CN201610917266.1A patent/CN106368984B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220819A (en) * | 2006-12-07 | 2008-07-16 | 株式会社丰田自动织机 | Centrifugal compressor |
| CN202280642U (en) * | 2011-09-08 | 2012-06-20 | 上海中科高等研究院 | Device for expanding stable running area of centrifugal compressor and centrifugal compressor |
| CN103174678A (en) * | 2013-03-26 | 2013-06-26 | 哈尔滨工程大学 | Centrifugal compressor air guiding recycling structure with multiple channels |
| CN204532969U (en) * | 2014-12-26 | 2015-08-05 | 珠海格力电器股份有限公司 | Diffuser structure applied to compressor |
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| Publication number | Publication date |
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| CN106368984A (en) | 2017-02-01 |
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