CN104879320A - Surging-prevent compressor volute structure for turbocharger - Google Patents
Surging-prevent compressor volute structure for turbocharger Download PDFInfo
- Publication number
- CN104879320A CN104879320A CN201510331893.2A CN201510331893A CN104879320A CN 104879320 A CN104879320 A CN 104879320A CN 201510331893 A CN201510331893 A CN 201510331893A CN 104879320 A CN104879320 A CN 104879320A
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- CN
- China
- Prior art keywords
- impeller
- compressor
- inlet
- air
- arc
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- 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.)
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Classifications
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/685—Inducing localised fluid recirculation in the stator-rotor interface
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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
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
Abstract
A surging-prevent compressor volute for a turbocharger adopts the structure that a tapered air inlet is formed in one end of the air intake passage of the compressor volute; an arc-shaped end matched with the outer contour of an arc-shaped blade of an impeller is arranged at the other end of the air intake passage; a circular flow guiding cavity is formed in the inner wall at the joint edge between the air intake passage and the arc-shaped end. During use, the impeller is mounted at the arc-shaped end of the compressor volute; the front edge end of the main blade of the impeller is arranged in the middle of the circular flow guiding cavity. When air disturbance is transmitted to an impeller inlet along the hub line of the impeller, and reaches the front edge of the main blade of the impeller, part of inlet air enters the flow guiding cavity in the form of a vortex after distorting circumferentially, so that a fluid field distorts to be transferred out of the impeller body, and the disturbance distortion of airflow at the impeller inlet is reduced, and is prevented from being further transmitted into the impeller; the airflow angle of inlet air at the impeller inlet is changed, so as to prevent distortion of the fluid field of the airflow at the air inlet end of a compressor, and enlarge the stable working range of the compressor.
Description
Technical field
The present invention relates to turbo-charger technical field, particularly a kind of Compressor volute of turbocharger structure of anti-surge.
Background technique
Along with the performance boost of vehicular engine, the operating range of pressurized machine also needs progressively to widen, but compressor surge is along with Capability of Compressor stumbling-block preventing the development always, affect the stability of air-flow during turbocharger operation, if the efficient working range of gas compressor can not get promoting, will finally affect the lifting of whole engine working range.The basic reason of compressor surge is caused to be that in gas compressor, air velocity distribution is produce local distortion at small flow, namely when the flow rate is excessively small, pressure change is there is at first in air-flow at impeller outlet place, and produce the flow perturbation in an outlet port, this flow perturbation is propagated along impeller hub alignment impeller inlet place, when arriving at primary blades leading edge, be converted into the circumferential distortion of the outer air-flow of impeller inlet, this circumferential distortion is exactly surging phenomenon.When pressurized machine generation surge, the air bound of compressor air inlet machine end, disengaging between partial air and compressor blade, eddy current, fluctuation and send ear-piercing howling, its trigger noise also causes the suction tude vibration before pressurized machine, the axially vibration of rotor shaft high frequency while polluting, and make the working state of motor be tending towards unstable, and then affect the operating life of motor and turbosupercharger.
At present, occur for preventing surging phenomenon, normally secondary air inlet structure is set on compressor volute, its structure as shown in Figure 1, existing compressor volute 2 comprises suction port 2-1 and taper air guide hole 2-3, the other end of taper air guide hole 2-3 is the arc matched with impeller 5 arc shaped blade external frame, impeller 5 is arranged on the arc tips of taper air guide hole 2-3, the inwall of compressor volute 2 suction port 2-1 is provided with air-ducting ring mounting groove, air-ducting ring 3 in conical ring is arranged on the taper air guide hole 2-3 excircle of compressor volute 2 inner chamber, and be pressed in air-ducting ring mounting groove by back-up ring 4, thus form diversion cavity 2-4 at the inwall of compressor volute 2 suction port 2-1 and taper air guide hole 2-3 excircle, the secondary air inlet hole 2-3-1 communicated with diversion cavity 2-4 is provided with in the arc tips of suction port 2-1, for being communicated with diversion cavity 2-4 and suction port 2-1.
When flow perturbation arrives at primary blades leading edge along the propagation of impeller 5 wheel hub alignment impeller 5 inlet, by secondary air inlet hole 2-3-1, the air inlet circumferential distortion vortex of half is introduced diversion cavity 2-4, allow flow distortion to impeller 5 external transfers, reduce the disturbance distortion of impeller 5 inlet air-flow, prevent it from propagating in impeller 5 further, by changing the charge air flow angle of impeller 5 inlet, thus suppressing the distortion of air velocity distribution at compressor air inlet machine end place, increasing the stable operation range of gas compressor.
Though this structure can suppress air velocity distribution in the distortion at compressor air inlet machine end place, increase the stable operation range of gas compressor, its complex structure, part is more, causes gas compressor cost to raise, adds installation step simultaneously.This structure is suitable only for big-block engine besides, cannot effectively be applied on passenger vehicle engine.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and a kind of Compressor volute of turbocharger structure of anti-surge is provided, the secondary air inlet structure it solved on existing compressor volute is more complicated, relates to part many, gas compressor cost is caused to raise, the problem that installation step increases.
Technological scheme of the present invention is: a kind of Compressor volute of turbocharger structure of anti-surge, comprise compressor volute, one end of compressor volute gas-entered passageway is taper suction port, the other end of gas-entered passageway is the arc tips matched with impeller arc shaped blade external frame, is provided with annular diversion cavity at the inwall at gas-entered passageway and arc termination edge place.
The cross section of described annular diversion cavity is trapezoidal.
The present invention by regulate the width of annular diversion cavity, the degree of depth and annular diversion cavity bi-side gradient to meet the requirement of gas compressor different performance, thus widen gas compressor stable operation range, and alleviate surge.
The present invention compared with prior art tool has the following advantages:
1, the arc tips of compressor volute is provided with annular diversion cavity, can the vortex of half be introduced in annular diversion cavity, flow distortion is allowed to develop to impeller outer, reduce the disturbance distortion of impeller inlet place flow angle, prevent it from propagating in impeller body further, effectively prevent the generation of compressor surge phenomenon, increase the stable operation range of gas compressor.
2, compared with the secondary air inlet structure on existing compressor volute, structure is simple, and casting cost is low, without mating parts, decreases installation step.
Below in conjunction with drawings and Examples, the invention will be further described.
Accompanying drawing explanation
Accompanying drawing 1 is the scheme of installation of existing compressor volute structure and impeller;
Accompanying drawing 2 is structural representation of the present invention;
Accompanying drawing 3 is behaviour in service schematic diagram of the present invention.
Embodiment
A kind of Compressor volute of turbocharger structure of anti-surge, comprise compressor volute 1, one end of compressor volute 1 gas-entered passageway 1-1 is taper suction port 1-1-1, the other end of gas-entered passageway 1-1 is the arc tips 1-1-2 matched with impeller 5 arc shaped blade external frame, the inwall meeting edge place at gas-entered passageway 1-1 and arc tips 1-1-2 is provided with annular diversion cavity 1-1-3, and the cross section of annular diversion cavity 1-1-3 is trapezoidal.
During use, impeller 5 is arranged on the arc tips 1-1-2 place of compressor volute 1, and the front acies of impeller 5 primary blades is in the middle part in annular diversion cavity 1-1-3 chamber.When flow perturbation arrives at impeller 5 primary blades leading edge along the propagation of impeller 5 wheel hub alignment impeller 5 inlet, part air inlet circumferential distortion vortex enters diversion cavity 1-1-3, allow flow distortion to impeller 5 external transfers, reduce the disturbance distortion of impeller 5 inlet air-flow, prevent it from propagating in impeller 5 further, by changing the charge air flow angle of impeller 5 inlet, thus suppressing the distortion of air velocity distribution at compressor air inlet machine end place, increasing the stable operation range of gas compressor.
Claims (2)
1. the Compressor volute of turbocharger structure of an anti-surge, comprise compressor volute, it is characterized in that: one end of compressor volute gas-entered passageway is taper suction port, the other end of gas-entered passageway is the arc tips matched with impeller arc shaped blade external frame, is provided with annular diversion cavity at the inwall at gas-entered passageway and arc termination edge place.
2. the Compressor volute of turbocharger structure of anti-surge as claimed in claim 1, is characterized in that: the cross section of described annular diversion cavity is trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510331893.2A CN104879320A (en) | 2015-06-16 | 2015-06-16 | Surging-prevent compressor volute structure for turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510331893.2A CN104879320A (en) | 2015-06-16 | 2015-06-16 | Surging-prevent compressor volute structure for turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104879320A true CN104879320A (en) | 2015-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510331893.2A Pending CN104879320A (en) | 2015-06-16 | 2015-06-16 | Surging-prevent compressor volute structure for turbocharger |
Country Status (1)
| Country | Link |
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| CN (1) | CN104879320A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989062A (en) * | 2017-04-24 | 2017-07-28 | 河北工程大学 | A kind of centrifugal compressor inlet distortion adjusting means |
| CN108757584A (en) * | 2018-07-09 | 2018-11-06 | 大同北方天力增压技术有限公司 | A kind of turbocharger muffler and its supplementing method for air |
| CN110332043A (en) * | 2019-08-14 | 2019-10-15 | 凤城市东宁动力有限公司 | A kind of turbocharger air inlet buffer structure |
| CN112282988A (en) * | 2020-10-26 | 2021-01-29 | 大连中车泽通机械有限公司 | Air filter of turbocharger of diesel engine |
| CN113464845A (en) * | 2021-07-13 | 2021-10-01 | 清华大学 | Gas circuit assembly and surge suppression system |
| CN113944654A (en) * | 2021-11-26 | 2022-01-18 | 中国北方发动机研究所(天津) | Wide-flow volute structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776091A (en) * | 2009-01-09 | 2010-07-14 | 陈晶 | Compressor casing of pressurizer |
| CN201582209U (en) * | 2009-12-10 | 2010-09-15 | 湖南天雁机械有限责任公司 | Antisurge structure of compressor volute of turbocharger |
| CN201972965U (en) * | 2011-03-29 | 2011-09-14 | 湖南天雁机械有限责任公司 | Turbocharger compressor volute with conical wind guide opening |
| WO2014030248A1 (en) * | 2012-08-24 | 2014-02-27 | 三菱重工業株式会社 | Centrifugal compressor |
| CN204851773U (en) * | 2015-06-16 | 2015-12-09 | 湖南天雁机械有限责任公司 | Turbo charger compressor worm frame of anti -surge |
-
2015
- 2015-06-16 CN CN201510331893.2A patent/CN104879320A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776091A (en) * | 2009-01-09 | 2010-07-14 | 陈晶 | Compressor casing of pressurizer |
| CN201582209U (en) * | 2009-12-10 | 2010-09-15 | 湖南天雁机械有限责任公司 | Antisurge structure of compressor volute of turbocharger |
| CN201972965U (en) * | 2011-03-29 | 2011-09-14 | 湖南天雁机械有限责任公司 | Turbocharger compressor volute with conical wind guide opening |
| WO2014030248A1 (en) * | 2012-08-24 | 2014-02-27 | 三菱重工業株式会社 | Centrifugal compressor |
| CN204851773U (en) * | 2015-06-16 | 2015-12-09 | 湖南天雁机械有限责任公司 | Turbo charger compressor worm frame of anti -surge |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989062A (en) * | 2017-04-24 | 2017-07-28 | 河北工程大学 | A kind of centrifugal compressor inlet distortion adjusting means |
| CN108757584A (en) * | 2018-07-09 | 2018-11-06 | 大同北方天力增压技术有限公司 | A kind of turbocharger muffler and its supplementing method for air |
| CN108757584B (en) * | 2018-07-09 | 2024-03-12 | 大同北方天力增压技术有限公司 | Silencer for turbocharger and air supplementing method thereof |
| CN110332043A (en) * | 2019-08-14 | 2019-10-15 | 凤城市东宁动力有限公司 | A kind of turbocharger air inlet buffer structure |
| CN112282988A (en) * | 2020-10-26 | 2021-01-29 | 大连中车泽通机械有限公司 | Air filter of turbocharger of diesel engine |
| CN113464845A (en) * | 2021-07-13 | 2021-10-01 | 清华大学 | Gas circuit assembly and surge suppression system |
| CN113944654A (en) * | 2021-11-26 | 2022-01-18 | 中国北方发动机研究所(天津) | Wide-flow volute structure |
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Application publication date: 20150902 |
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