CN201090531Y - Anti-surging impeller cover - Google Patents
Anti-surging impeller cover Download PDFInfo
- Publication number
- CN201090531Y CN201090531Y CNU2007201152543U CN200720115254U CN201090531Y CN 201090531 Y CN201090531 Y CN 201090531Y CN U2007201152543 U CNU2007201152543 U CN U2007201152543U CN 200720115254 U CN200720115254 U CN 200720115254U CN 201090531 Y CN201090531 Y CN 201090531Y
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- impeller
- wind
- front shroud
- inner cover
- asthma
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Abstract
The utility model relates to a detachable anti-surge impeller cover used on a turbine to reduce surge, comprising a connecting flange arranged outside. The utility model is characterized in that the anti-surge impeller cover includes a front guide cover and an inner impeller cover which are connected; the inner impeller cover is jacketed on an inducer and the front guide cover is suspended before the inlet of the inducer; an axial space and a radial space communicated with each other are remained between the inner impeller cover and the front guide cover; a plurality of stripped holes for communicating the radial space are arranged on the inner impeller cover and corresponded to the inducer. By the flow channels formed by the stripped holes of the anti-surge impeller cover and the axial space and the radial space, the surge margin of the gas compressor in work is enlarged and the turbocharger surge phenomenon is effectively prevented when the diesel and the turbocharger is combined to work under poor working condition.
Description
Technical field
The utility model relates to the anti-asthma impeller chimney of extenuating surge on a kind of turbosupercharger.
Background technique
As everyone knows, when carrying out turbosupercharger and diesel engine performance coupling, require turbosupercharger all can be operated in high efficient area as far as possible, can make diesel engine have performance index such as fuel consumption rate and delivery temperature preferably at the high running on the lower load of diesel engine.But the characteristic of turbosupercharger and the work of diesel engine coupling is difficult to accomplish this point: if the efficient when having guaranteed the turbosupercharger high load, then surging phenomenon easily takes place in pressurized machine when running on the lower load; Do not breathe heavily if will guarantee low-load, the efficient when then being operated in high load is not high.This situation is particularly evident above 3.5 o'clock in pressure ratio.
The gas compressor of turbosupercharger can only be operated in certain range of flow, if when being operated in the less section of flow (such as low-load time), then can surge occur at the inducer place of gas compressor, the pressurized machine cisco unity malfunction.
Summary of the invention
The situation that high low-load can not taken into account when the utility model had solved diesel engine and turbocharger matching in the prior art, when the work of a kind of effective solution diesel engine and Matching of Turbocharger was provided, the anti-asthma impeller chimney of surge easily took place in diesel engine work pressurized machine when running on the lower load and small flow section.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of anti-asthma impeller chimney, comprise and be arranged on outside adpting flange, it is characterized in that the anti-asthma impeller chimney comprises interconnective wind-guiding front shroud and impeller inner cover, the impeller inner cover is nested with on inducer, before the wind-guiding front shroud is suspended in the inducer import; Leave axial space and the radial space that is interconnected between impeller inner cover and the wind-guiding front shroud, the impeller inner cover has several bar holes that are communicated with radial space corresponding to the inducer place.Bar hole and axial space and radial space form air-flow path, and an airflow flowing part enters into air-flow path in the blade on inducer, can eliminate surging phenomenon; It is also convenient to adopt split-type structural to change; The quantity of strip hole is 3～12 symmetric arrangement.
As preferably, the internal surface of impeller inner cover is a cambered surface, and the radian of the blade of radian and impeller matches, and the internal surface of wind-guiding front shroud also is a cambered surface, and the wind-guiding front shroud is connected the whole internal surface in back and is horn-like that the both ends of the surface diameter is big, mid diameter is little with the impeller inner cover.As preferably, bar hole is in tilted layout to the direction of inducer import from the internal surface of impeller chimney.
The impeller inner cover is provided with adpting flange outward, positioning boss and outside fix boss in the both sides of adpting flange are provided with.
The internal diameter of the diameter of interior positioning boss and wind-guiding front shroud matches, and the wind-guiding front shroud is nested with on interior positioning boss and connects by link behind the location.
Adpting flange is provided with attachment hole, is divided into 4 tapped holes and 4 unthreaded holes along circumferentially evenly distributing at interval.Bolt hole is used for being connected with the wind-guiding front shroud, and unthreaded hole is used for being connected with Diffuser.
The outer both ends of the surface of wind-guiding front shroud are provided with attachment hole, and a side that is connected with the impeller inner cover is provided with 8 unthreaded holes.
The beneficial effects of the utility model are: by the air-flow path of anti-asthma impeller chimney bar hole and axial space and radial space formation, surge margin when having enlarged gas compressor work is effectively eliminated the phenomenon that surge appears in diesel engine and turbosupercharger combined running pressurized machine under low operating mode.
Description of drawings
Fig. 1 is a kind of mounting structure schematic representation of the utility model;
Fig. 2 is a kind of structural representation of the utility model;
Among the figure: 1, wind-guiding front shroud, 2, the impeller inner cover, 3, inducer, 4, Diffuser, 5, bar hole, 6, side, 7, interior circle, 8, interior positioning boss, 9, adpting flange, 10, the outside fix boss, 11, location cylindrical, 12, axial space, 13, radial space, 14, the inducer import.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of anti-asthma impeller chimney (referring to accompanying drawing 1 accompanying drawing 2), comprise wind-guiding front shroud 1 and impeller inner cover 2, the impeller inner cover is nested with on inducer 3, the two ends of wind-guiding front shroud are provided with adpting flange, adpting flange is provided with attachment hole, a side 6 that is connected with the impeller inner cover is provided with 8 unthreaded holes, opposite side is provided with location cylindrical 11, the outer surface of impeller inner cover is provided with adpting flange 9, adpting flange is provided with attachment hole, be divided into 4 tapped holes and 4 unthreaded holes along circumferentially evenly distributing at interval, tapped hole is used for being connected with the wind-guiding front shroud, unthreaded hole is used for being connected with Diffuser, positioning boss 8 and outside fix boss 10 in the both sides of adpting flange are respectively, near interior positioning boss is interior circle 7, interior diameter of a circle is less than interior positioning boss, the internal diameter of one side 6 at wind-guiding front shroud edge and the diameter of interior positioning boss match, before the wind-guiding front shroud is suspended in inducer import 14, locating the back by the interior edge of side 6 on interior positioning boss links to each other with the tapped hole of adpting flange by bolt, interior circle is provided with 8 bar holes 5 of radially direct symmetry, bar hole is in tilted layout to the direction of inducer import 14 from the internal surface of impeller chimney, the height of interior circle is less than the degree of depth of wind-guiding front shroud, leave axial space 12 and radial space 13 between impeller inner cover and the wind-guiding front shroud, bar hole forms an air-flow path that is communicated with axial space and radial space, the inboard of wind-guiding front shroud is a cambered surface, the inboard of impeller inner cover is a cambered surface, the ex-meridian of radian and impeller blade matches, the wind-guiding front shroud is connected the whole internal surface in back, and to be the both ends of the surface diameter big with the impeller inner cover, little horn-like of mid diameter, the joint of adpting flange and outside fix boss is a hypotenuse, toward the direction inclination of adpting flange.
Claims (7)
1. anti-asthma impeller chimney, comprise and be arranged on outside adpting flange, it is characterized in that the anti-asthma impeller chimney comprises interconnective wind-guiding front shroud (1) and impeller inner cover (2), the impeller inner cover is nested with on inducer (3), before wind-guiding front shroud (1) is suspended in the inducer import; Leave the axial space (12) and the radial space (13) that are interconnected between impeller inner cover and the wind-guiding front shroud, the impeller inner cover has several bar holes (5) that are communicated with radial space corresponding to the inducer place.
2. anti-asthma impeller chimney according to claim 1, the internal surface that it is characterized in that described impeller inner cover is a cambered surface, the radian of the blade of radian and impeller matches, the internal surface of wind-guiding front shroud also is a cambered surface, the wind-guiding front shroud is connected the whole internal surface in back, and to be the both ends of the surface diameter big with the impeller inner cover, little horn-like of mid diameter.
3. anti-asthma impeller chimney according to claim 1 is characterized in that described bar hole is in tilted layout to the direction of inducer import from the internal surface of impeller chimney.
4. anti-asthma impeller chimney according to claim 1 is characterized in that described impeller inner cover is provided with adpting flange (9) outward, is provided with interior positioning boss (8) and outside fix boss (10) in the both sides of adpting flange.
5. anti-asthma impeller chimney according to claim 4 is characterized in that the diameter of described interior positioning boss and the internal diameter of wind-guiding front shroud match, and the wind-guiding front shroud is nested with on interior positioning boss and connects by link behind the location.
6. anti-asthma impeller chimney according to claim 4 is characterized in that described adpting flange is provided with attachment hole, is divided into 4 tapped holes and 4 unthreaded holes along circumferentially evenly distributing at interval.
7. anti-asthma impeller chimney according to claim 1 is characterized in that the outer both ends of the surface of described wind-guiding front shroud are provided with attachment hole, and a side (6) that is connected with the impeller inner cover is provided with 8 unthreaded holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201152543U CN201090531Y (en) | 2007-09-20 | 2007-09-20 | Anti-surging impeller cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201152543U CN201090531Y (en) | 2007-09-20 | 2007-09-20 | Anti-surging impeller cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090531Y true CN201090531Y (en) | 2008-07-23 |
Family
ID=39862292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201152543U Expired - Fee Related CN201090531Y (en) | 2007-09-20 | 2007-09-20 | Anti-surging impeller cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090531Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174678A (en) * | 2013-03-26 | 2013-06-26 | 哈尔滨工程大学 | Centrifugal compressor air guiding recycling structure with multiple channels |
| CN106065878A (en) * | 2015-04-21 | 2016-11-02 | 曼柴油机和涡轮机欧洲股份公司 | Fluid machine |
| CN104989672B (en) * | 2015-06-19 | 2017-06-23 | 中国航空动力机械研究所 | A kind of treated casing structure and compressor for improving one-stage centrifugal compressor surge nargin |
| WO2017152565A1 (en) * | 2016-03-07 | 2017-09-14 | 合肥通用机械研究院 | Centrifugal compressor stability enhancement device |
| CN108868910A (en) * | 2018-09-18 | 2018-11-23 | 凤城市东宁动力有限公司 | Turbocharger anti-surge air inlet water conservancy diversion cover structure |
-
2007
- 2007-09-20 CN CNU2007201152543U patent/CN201090531Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174678A (en) * | 2013-03-26 | 2013-06-26 | 哈尔滨工程大学 | Centrifugal compressor air guiding recycling structure with multiple channels |
| CN103174678B (en) * | 2013-03-26 | 2015-09-30 | 哈尔滨工程大学 | Multichannel centrifugal compressor bleed recirculation structure |
| CN106065878A (en) * | 2015-04-21 | 2016-11-02 | 曼柴油机和涡轮机欧洲股份公司 | Fluid machine |
| CN104989672B (en) * | 2015-06-19 | 2017-06-23 | 中国航空动力机械研究所 | A kind of treated casing structure and compressor for improving one-stage centrifugal compressor surge nargin |
| WO2017152565A1 (en) * | 2016-03-07 | 2017-09-14 | 合肥通用机械研究院 | Centrifugal compressor stability enhancement device |
| CN108868910A (en) * | 2018-09-18 | 2018-11-23 | 凤城市东宁动力有限公司 | Turbocharger anti-surge air inlet water conservancy diversion cover structure |
| CN108868910B (en) * | 2018-09-18 | 2023-09-22 | 凤城市东宁动力有限公司 | Anti-surge air inlet guide sleeve structure of turbocharger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG ROTONG ELECTRO-MECHANICS CO., LTD. Free format text: FORMER OWNER: ROSHOW GROUP CO., LTD. Effective date: 20130301 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 311814 SHAOXING, ZHEJIANG PROVINCE TO: 311800 SHAOXING, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130301 Address after: 311800 Zhejiang city of Zhuji province Jiang Zao Zhen Yu Jiang Cungao. Patentee after: Zhejiang Rotong Electro-mechanics Co., Ltd. Address before: 311814, Zhejiang province Zhuji city shop town smile Road No. 38 Patentee before: China Roshow Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20150920 |
|
| EXPY | Termination of patent right or utility model |