CN103277344A - Inner circulating device of centrifugal gas compressor - Google Patents
Inner circulating device of centrifugal gas compressor Download PDFInfo
- Publication number
- CN103277344A CN103277344A CN2013102114712A CN201310211471A CN103277344A CN 103277344 A CN103277344 A CN 103277344A CN 2013102114712 A CN2013102114712 A CN 2013102114712A CN 201310211471 A CN201310211471 A CN 201310211471A CN 103277344 A CN103277344 A CN 103277344A
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- CN
- China
- Prior art keywords
- impeller
- centrifugal
- runner
- opening
- gas compressor
- 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.)
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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
- F04D29/66—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an inner circulating device of a centrifugal gas compressor. The inner circulating device of the centrifugal gas compressor comprises an impeller housing fixed at the outer side of an impeller, and an air inlet bending pipe fixed with the front end of the impeller housing, and is characterized in that a backflow body is arranged on the inner wall formed by the impeller housing and the air inlet bending pipe, a flowing channel capable of permitting circulation of gas and improving surge margin is formed between the backflow body and the inner wall, one end of the flowing channel and the inner wall form an opening, and the other end of the flowing channel and the inner wall form an throat port. The flow channel from the opening to the throat port is designed to guarantee smooth transition and monotonous variation of size, and avoids abrupt variation. The inner circulating device of the centrifugal gas compressor has little influence on the use efficiency of the centrifugal gas compressor, can largely improve the surge margin of the gas compressor, and increases the gas flow range by about 14%.
Description
Technical field
The present invention relates to a kind of raising centrifugal-flow compressor surge margin, enlarge the internal circulation apparatus of turbocharger matching operating mode scope, specifically a kind of centrifugal-flow compressor internal circulation apparatus.
Background technique
At present, reduce requirements such as discharging and the increase of power per cylinder density for satisfying diesel engine, make turbosupercharger must satisfy matching efficiency the best in full operating mode scope, this also will make turbosupercharger near the surge line operation, has so also just limited the scope of the coupling operating mode of turbosupercharger.Use traditional design to adjust the gas compressor performance curve of turbosupercharger singlely, can not satisfy wide in range coupling operating mode and the requirement of surge margin.Therefore, design a kind ofly on the basis of existing impeller design, improve the centrifugal-flow compressor surge margin, the device that enlarges turbocharger matching operating mode scope becomes the present stage problem that needs to be resolved hurrily.
Summary of the invention
According to the technical problem of above-mentioned proposition, and provide a kind of centrifugal-flow compressor internal circulation apparatus.The present invention mainly forms gas flow by setting up reflux, thereby plays the effect that improves surge margin.
The technological means that the present invention adopts is as follows:
A kind of centrifugal-flow compressor internal circulation apparatus, comprise the impeller cover that is fixed on the impeller outside and the intake elbow of fixing with described impeller cover front end, it is characterized in that: the inwall that constitutes at described impeller cover and described intake elbow is provided with reflux, but be formed with the runner of supplied gas circulation, raising surge margin between described reflux and the described inwall, the two ends of described runner form opening and aditus laryngis with described inwall respectively.
Preferably, the central position of described aditus laryngis is concordant along meridional channel with the air inlet aditus laryngis central position of described impeller; Described opening is arranged on the front end of described impeller, and the central position of described opening is 0.125-0.25 times of impeller diameter apart from the axial distance of the blade leading edge of described impeller.
Preferably, the area of described aditus laryngis is the 11%-21% of described impeller throat area.In structure of the present invention, the ratio that the flow that gas enters the centrifugal-flow compressor internal circulation apparatus accounts for the compressor air inlet machine total discharge is 0.4%-1.2%, and being calculated value, flow-rate ratio tries to achieve, do not possess actual operation, therefore, it is more concrete that the present invention adopts the ratio definition of throat area and impeller area.
Preferably, the area of described opening be described throat area 2-6 doubly.
Preferably, described runner is smooth, Flow area monotonously change and the runner that does not have sudden change.
Compare than prior art, the present invention mainly sets up the reflux structure between the impeller cover of existing centrifugal-flow compressor and blade wheel structure, form runner between reflux and the inwall, thereby forms internal circulation system; Reflux structure of the present invention can only be arranged on the impeller cover, as long as satisfy the status requirement of runner opening and aditus laryngis, also can cross over intake elbow and impeller cover simultaneously and set within it on the wall, as long as it is smooth excessively to satisfy runner, runner opening and throat location require to get final product.
When flow to be about to take place the separating of impeller, pressure reduces before the impeller, and the gas backstreaming that pressure difference can will suck by the runner aditus laryngis is postponed the generation of surge to the impeller front end; When impeller mobile is about to block, air-flow will replenish air inlet by the runner opening, thereby strengthen the obstruction flow.By with upper type, enlarged the coupling operating mode scope of turbosupercharger.Wherein, the opening of runner will guarantee smooth transition to the design of the runner of aditus laryngis, area monotonously change and do not have sudden change, thus reach the unresisted circulation of air-flow.
The present invention is pressure-raising mechanism of qi surge margin significantly, and the gas flow scope increases about about 14%.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is structural representation of the present invention.
Among the figure: 1, reflux 2, impeller cover 3, impeller 4, intake elbow 5, runner 51, opening 52, aditus laryngis
Embodiment
As shown in Figure 1, a kind of centrifugal-flow compressor internal circulation apparatus, comprise the impeller cover 2 that is fixed on impeller 3 outsides and the intake elbow of fixing with described impeller cover 2 front ends 4, the inwall that constitutes at described impeller cover 2 and described intake elbow 4 is provided with reflux 1, but be formed with the runner 5 of supplied gas circulation, raising surge margin between described reflux 1 and the described inwall, the two ends of described runner 5 form opening 51 and aditus laryngis 52 with described inwall respectively.
The central position of described aditus laryngis 52 is concordant along meridional channel with the air inlet aditus laryngis central position of described impeller 3; Described opening 51 is arranged on the front end of described impeller 3, and the central position of described opening 51 is 0.125-0.25 times of impeller diameter apart from the axial distance of the blade leading edge of described impeller 3.
The area of described aditus laryngis 52 is the 11%-21% of described impeller 3 throat areas.
The area of described opening 51 is 2-6 times of described aditus laryngis 52 areas.
Described runner 5 is for smooth, Flow area monotonously change and do not have the runner of sudden change.
Embodiment 1
A kind of centrifugal-flow compressor internal circulation apparatus, impeller 3 diameters are 280mm, impeller 3 throat areas are 134.967cm
2, aditus laryngis 52 areas are 19.458cm
2, be 14.4% of impeller 3 throat areas; Opening 51 central positions account for 0.177 of impeller 3 diameters apart from the axial 49.56mm of compressor impeller 3 blade leading edges; The area of opening 51 is 51.174cm
2, be 2.63 times of aditus laryngis 52 areas.This device is compared than existing apparatus, and the surge margin of gas compressor has improved 14%, the also corresponding increase of gas compressor 80% above efficiency band.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technological scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (5)
1. centrifugal-flow compressor internal circulation apparatus, comprise the impeller cover (2) that is fixed on impeller (3) outside and the intake elbow of fixing with described impeller cover (2) front end (4), it is characterized in that: the inwall that constitutes at described impeller cover (2) and described intake elbow (4) is provided with reflux (1), described reflux (1) but and be formed with supplied gas circulation between the described inwall, improve the runner (5) of surge margin, the two ends of described runner (5) form opening (51) and aditus laryngis (52) with described inwall respectively.
2. centrifugal-flow compressor internal circulation apparatus according to claim 1, it is characterized in that: the central position of described aditus laryngis (52) is concordant along meridional channel with the air inlet aditus laryngis central position of described impeller (3); Described opening (51) is arranged on the front end of described impeller (3), and the central position of described opening (51) is 0.125-0.25 times of impeller diameter apart from the axial distance of the blade leading edge of described impeller (3).
3. centrifugal-flow compressor internal circulation apparatus according to claim 1 and 2, it is characterized in that: the area of described aditus laryngis (52) is the 11%-21% of described impeller (3) throat area.
4. centrifugal-flow compressor internal circulation apparatus according to claim 1 and 2 is characterized in that: the area of described opening (51) be described aditus laryngis (52) area 2-6 doubly.
5. centrifugal-flow compressor internal circulation apparatus according to claim 1 is characterized in that: described runner (5) is for smooth, Flow area monotonously change and do not have the runner of sudden change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102114712A CN103277344A (en) | 2012-12-21 | 2013-05-30 | Inner circulating device of centrifugal gas compressor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210563680.9 | 2012-12-21 | ||
| CN2012105636809A CN102996507A (en) | 2012-12-21 | 2012-12-21 | Internally circulating device of centrifugal air compressor |
| CN2013102114712A CN103277344A (en) | 2012-12-21 | 2013-05-30 | Inner circulating device of centrifugal gas compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103277344A true CN103277344A (en) | 2013-09-04 |
Family
ID=47925488
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105636809A Pending CN102996507A (en) | 2012-12-21 | 2012-12-21 | Internally circulating device of centrifugal air compressor |
| CN2013102114712A Pending CN103277344A (en) | 2012-12-21 | 2013-05-30 | Inner circulating device of centrifugal gas compressor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105636809A Pending CN102996507A (en) | 2012-12-21 | 2012-12-21 | Internally circulating device of centrifugal air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN102996507A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016151689A1 (en) * | 2015-03-20 | 2016-09-29 | 三菱重工業株式会社 | Centrifugal compressor and supercharger comprising same |
| CN109989942B (en) * | 2017-12-29 | 2024-01-16 | 宁波方太厨具有限公司 | Supercharged centrifugal fan |
| CN108595776B (en) * | 2018-03-29 | 2021-11-30 | 天津大学 | Matching calculation method for centrifugal impeller and diffuser under pre-swirl air inlet |
| CN110118200A (en) * | 2019-06-14 | 2019-08-13 | 东风汽车集团有限公司 | Compressor housings and compressor |
| CN113175445B (en) * | 2021-05-27 | 2024-06-04 | 中车大连机车研究所有限公司 | Air inlet housing for expanding air inflow of blower |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070269308A1 (en) * | 2006-05-22 | 2007-11-22 | Wood Terry G | Engine intake air compressor having multiple inlets and method |
| US20090013689A1 (en) * | 2006-02-17 | 2009-01-15 | Siegfried Sumser | Compressor for an internal combustion engine |
| CN101560987A (en) * | 2008-04-17 | 2009-10-21 | 霍尼韦尔国际公司 | Centrifugal compressor with surge control, and associated method |
| CN101749278A (en) * | 2010-02-09 | 2010-06-23 | 清华大学 | Centrifugal compressor asymmetric self-circulation treatment casing based on varied notching width |
| CN102428282A (en) * | 2009-10-16 | 2012-04-25 | 三菱重工业株式会社 | Compressor for exhaust turbo-charger |
| CN203374525U (en) * | 2012-12-21 | 2014-01-01 | 中国北车集团大连机车研究所有限公司 | Inner circulating device of centrifugal-flow compressor |
-
2012
- 2012-12-21 CN CN2012105636809A patent/CN102996507A/en active Pending
-
2013
- 2013-05-30 CN CN2013102114712A patent/CN103277344A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090013689A1 (en) * | 2006-02-17 | 2009-01-15 | Siegfried Sumser | Compressor for an internal combustion engine |
| US20070269308A1 (en) * | 2006-05-22 | 2007-11-22 | Wood Terry G | Engine intake air compressor having multiple inlets and method |
| CN101560987A (en) * | 2008-04-17 | 2009-10-21 | 霍尼韦尔国际公司 | Centrifugal compressor with surge control, and associated method |
| CN102428282A (en) * | 2009-10-16 | 2012-04-25 | 三菱重工业株式会社 | Compressor for exhaust turbo-charger |
| CN101749278A (en) * | 2010-02-09 | 2010-06-23 | 清华大学 | Centrifugal compressor asymmetric self-circulation treatment casing based on varied notching width |
| CN203374525U (en) * | 2012-12-21 | 2014-01-01 | 中国北车集团大连机车研究所有限公司 | Inner circulating device of centrifugal-flow compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102996507A (en) | 2013-03-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB02 | Change of applicant information |
Address after: 116021 Shahekou, Liaoning, China No. 49 The Strip Applicant after: CRRC DALIAN INSTITUTE Co.,Ltd. Address before: 116021 Shahekou, Liaoning, China No. 49 The Strip Applicant before: CNR DALIAN LOCOMOTIVE RESEARCH INSTITUTE Co.,Ltd. |
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| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160125 Address after: 100844 Fuxing Road, Beijing, Haidian District, No. 10 Applicant after: CHINA RAILWAY Corp. Applicant after: CRRC DALIAN INSTITUTE Co.,Ltd. Address before: 116021 Shahekou, Liaoning, China No. 49 The Strip Applicant before: CRRC DALIAN INSTITUTE Co.,Ltd. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130904 |