CN204692189U - A kind of return channel with deviated splitter vane - Google Patents
A kind of return channel with deviated splitter vane Download PDFInfo
- Publication number
- CN204692189U CN204692189U CN201520079085.7U CN201520079085U CN204692189U CN 204692189 U CN204692189 U CN 204692189U CN 201520079085 U CN201520079085 U CN 201520079085U CN 204692189 U CN204692189 U CN 204692189U
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- linear leaf
- return channel
- short blade
- chassis
- utility
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- 230000008676 import Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 229920003266 Leaf® Polymers 0.000 description 14
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model discloses a kind of return channel with deviated splitter vane.Gas frictional loss in return channel is very large, sometimes can reach 6% ~ 8% of grade energy, larger to the performance impact of whole compressor stage; And directly can affect the performance of next stage impeller from the air-flow of return channel outlet, therefore improve the flowing of air-flow in return channel very necessary.The utility model comprises chassis and the linear leaf that is welded on chassis and short blade; Multi-disc linear leaf is uniform along the circumference on chassis, is equipped with short blade between adjacent two panels linear leaf; Linear leaf and short blade are all curved, and the arc length of short blade is 1/3 ~ 1/2 of linear leaf; The gap ratio of short blade and adjacent two panels linear leaf is 5 ~ 8:9, and all short blades are uniform along the circumference on chassis.The utility model can guarantee centrifugal compressor Stage safety, stable operation under low flow rate condition, avoids return channel inside to produce the wild effects such as secondary back, strengthens the stability run.
Description
Technical field
The utility model belongs to technical field of general-purpose equipment, especially relates to a kind of return channel with deviated splitter vane.
Background technique
Centrifugal compressor is primarily of impeller, Diffuser and return channel composition, and the height of their design levels will directly decide the performance of compressor.Impeller is rotor, and the mechanical or electrical energy of gas to be converted into kinetic energy and the potential energy of gas by constantly driving gas rotating by it; Return channel mainly plays guide functions, guides the air-flow that curls up by force flowed out from Diffuser element to enter next stage impeller with axis or specific direction.In return channel leaf grating, there is very large gradient in flow velocity, is typical instability, large separated flow.Stream interface also exists secondary flow vortices significantly, and along flowing to processes such as experiencing nascent, development, dissipation.Back flowing exit flow is pure radial direction not, and flowing has strong nonuniformity.Research shows, gas frictional loss in return channel is very large, sometimes can reach the 6%-8% of grade energy, larger to the performance impact of whole compressor stage.And directly can affect the performance of next stage impeller from the air-flow of return channel outlet, therefore improve the flowing of air-flow in return channel very necessary.Numerous scholar has carried out comparatively detailed research to single-stage centrifugal compressor impeller aeroperformance, but less for the research of the aerodynamic characteristic of return channel.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, a kind of return channel with deviated splitter vane is proposed, guarantee that centrifugal compressor Stage in safety, stable operation under low flow rate condition, can be avoided return channel inside to produce the wild effects such as secondary back, strengthen the stability run.
The technical solution adopted in the utility model is as follows:
The utility model comprises chassis and the linear leaf that is welded on chassis and short blade; Multi-disc linear leaf is uniform along the circumference on chassis, is equipped with short blade between adjacent two panels linear leaf.
Described linear leaf and short blade are all curved, and the arc length of short blade is 1/3 ~ 1/2 of linear leaf; The gap ratio of described short blade and adjacent two panels linear leaf is 5 ~ 8:9, and all short blades are uniform along the circumference on chassis.
The beneficial effects of the utility model are:
If utilize CFD technology to carry out numerical simulation, can find when low flow rate condition, between the return channel leaf road being provided with short blade, secondary back phenomenon obviously reduces, and the return channel adding short blade can make centrifugal compressor Stage operational efficiency comparatively promote 1 ~ 5% without in short blade situation, thus improves the safety of centrifugal compressor Stage under low flow rate condition, stability.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the utility model is assemblied on centrifugal compressor Stage;
Fig. 2 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As illustrated in fig. 1 and 2, a kind of return channel with deviated splitter vane, comprises chassis 5 and the linear leaf 4 that is welded on chassis 5 and short blade 6; Ten a slice linear leafs 4 are uniform along the circumference on chassis 5, be equipped with short blade 6, effectively prevent the producing and developing of secondary back between adjacent two panels linear leaf.
As shown in Figure 2, linear leaf and short blade are all curved, and the arc length of short blade is 1/3 of linear leaf; Short blade 6 is 5:9 with the gap ratio of adjacent two panels linear leaf 4, and all short blades are uniform along the circumference on chassis 5.
Should with the return channel of deviated splitter vane, working principle:
3 d impeller 1 rotates air work, is discharged by vane diffuser 2 by the gas after 3 d impeller 1 does work, and through bend 3, enters this return channel with deviated splitter vane, then is discharged by outlet.
When centrifugal compressor Stage runs at low flow rate condition, gas flow is when return channel, obvious secondary back can be produced, flow field is changed by the short blade arranged near return channel import, thus effectively avoid the generation of secondary back, expand the scope of centrifugal compressor Stage safety, stable operation.
Claims (1)
1., with a return channel for deviated splitter vane, comprise chassis and the linear leaf that is welded on chassis and short blade, it is characterized in that: multi-disc linear leaf is uniform along the circumference on chassis, between adjacent two panels linear leaf, be equipped with short blade; Described short blade is arranged on linear leaf inlet, and the import of short blade and linear leaf is equal to the distance of center chassis; Described linear leaf and short blade are all curved, and the arc length of short blade is 1/3 ~ 1/2 of linear leaf; The gap ratio of described short blade and adjacent two panels linear leaf is 5 ~ 8:9, and all short blades are uniform along the circumference on chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520079085.7U CN204692189U (en) | 2015-02-04 | 2015-02-04 | A kind of return channel with deviated splitter vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520079085.7U CN204692189U (en) | 2015-02-04 | 2015-02-04 | A kind of return channel with deviated splitter vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204692189U true CN204692189U (en) | 2015-10-07 |
Family
ID=54232489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520079085.7U Expired - Fee Related CN204692189U (en) | 2015-02-04 | 2015-02-04 | A kind of return channel with deviated splitter vane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204692189U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762842A (en) * | 2016-12-06 | 2017-05-31 | 重庆美的通用制冷设备有限公司 | A kind of return channel and the centrifugal compressor comprising it |
| CN107687447A (en) * | 2017-09-29 | 2018-02-13 | 广东威灵电机制造有限公司 | Diffuser |
| CN107882748A (en) * | 2017-09-30 | 2018-04-06 | 福建希源纸业有限公司 | A kind of speciality paper vacuum system |
| CN114704479A (en) * | 2022-04-12 | 2022-07-05 | 中国科学院空天信息创新研究院 | Centrifugal fan for stratosphere |
-
2015
- 2015-02-04 CN CN201520079085.7U patent/CN204692189U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762842A (en) * | 2016-12-06 | 2017-05-31 | 重庆美的通用制冷设备有限公司 | A kind of return channel and the centrifugal compressor comprising it |
| CN107687447A (en) * | 2017-09-29 | 2018-02-13 | 广东威灵电机制造有限公司 | Diffuser |
| CN107687447B (en) * | 2017-09-29 | 2024-07-12 | 广东威灵电机制造有限公司 | Diffuser |
| CN107882748A (en) * | 2017-09-30 | 2018-04-06 | 福建希源纸业有限公司 | A kind of speciality paper vacuum system |
| CN114704479A (en) * | 2022-04-12 | 2022-07-05 | 中国科学院空天信息创新研究院 | Centrifugal fan for stratosphere |
| CN114704479B (en) * | 2022-04-12 | 2023-11-28 | 中国科学院空天信息创新研究院 | Centrifugal fan for stratosphere |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160204 |