CN205823738U - Vane diffuser for centrifugal compressor - Google Patents
Vane diffuser for centrifugal compressor Download PDFInfo
- Publication number
- CN205823738U CN205823738U CN201620586699.9U CN201620586699U CN205823738U CN 205823738 U CN205823738 U CN 205823738U CN 201620586699 U CN201620586699 U CN 201620586699U CN 205823738 U CN205823738 U CN 205823738U
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- China
- Prior art keywords
- blade
- diffuser
- suction socket
- vane
- suction
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- Expired - Fee Related
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- 238000009792 diffusion process Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of vane diffuser for centrifugal compressor, including radial diffuser, the blade inlet edge of radial diffuser connects the impeller trailing edge of compressor by passage；Radial diffuser includes the multiple blades being uniformly distributed circumferentially, and blade radially extends；The inner of blade offers suction socket and suction socket, suction socket and suction socket and is positioned at the front side of blade throat；Suction socket extends along the short transverse of blade；One end of suction socket is connected with suction socket, and the other end of suction socket connects the arrival end of suction tube, and the port of export of suction tube leads to the blade inlet edge of radial diffuser；Suction socket is connected with the space on front side of blade throat.This utility model can improve the efficiency of diffuser.
Description
Technical field
This utility model relates to the adnexa of a kind of compressor, is specifically related to a kind of blade diffusion for centrifugal compressor
Device.
Background technology
Diffuser is the critical component of centrifugal compressor, is arranged on the impeller outlet of compressor, for water conservancy diversion and diffusion.Expand
Depressor can make from impeller of rotor high velocity air deceleration supercharging out, converts kinetic energy into pressure energy, is lowered into combustion simultaneously
Burning the air velocity of room, therefore diffuser whole efficiency and combustion efficiency of combustion chamber effect to improving compressor is notable.
Diffuser is generally divided into vaneless diffuser and vane diffuser two kinds, vaneless diffuser simple in construction, but flowing road
Journey is longer, and friction loss is big, and inefficient under design conditions；And the diffusion degree of vane diffuser is big, size is little, and leaf
Sheet diffuser, under steady air flow state, improves impeller internal stress equalization aspect and has more advantage, therefore at centrifugal compressor
Advantageously.
Being structurally characterized in that of existing vane diffuser, the leaf of blade is high equal or leaf is high is gradually increased, blade thickness
Uniformly, and blade pitgh from leading edge to trailing edge continuous expansion, air-flow is Free Development on blade, without auxiliary equipment help, attached
Layer can grow up on diffuser vane surface, ultimately results in separation and stall.This phenomenon makes being suitable for of vane diffuser
Condition range narrows, and effect is deteriorated.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of vane diffuser for centrifugal compressor, and it can
To improve Performance.
For solving above-mentioned technical problem, this utility model is for the technical solution of the vane diffuser of centrifugal compressor
For:
Including radial diffuser 1, after the blade inlet edge 3-10 of radial diffuser 1 connects the impeller 10 of compressor by passage
Edge；Radial diffuser 1 includes the multiple blades 3 being uniformly distributed circumferentially, and blade 3 radially extends；The inner of blade 3 offers
Suction socket 5 and suction socket 7, suction socket 5 and suction socket 7 are positioned at the front side of blade throat 4；Suction socket 5 is along the short transverse of blade 3
Extend；One end of suction socket 5 is connected with suction socket 7, and the other end of suction socket 5 connects the arrival end of suction tube 6, suction tube 6
The port of export lead to the blade inlet edge 3-10 of radial diffuser 1；Suction socket 7 is connected with the space on front side of blade throat 4.
Described blade 3 includes the medial segment 3-2 of main part 3-1 and nearly throat, the axial height phase of the medial segment 3-2 of blade
With；The axial height of the main part 3-1 of blade is gradually increased by after forward direction.
Also include that axial diffuser 2, the trailing edge of described radial diffuser 1 connect axial diffuser by gas passage
2。
Multiple thick blades that described axial diffuser 2 includes being uniformly distributed circumferentially and multiple slim vane, each blade is along axle
To extension；The thickness of thick blade is more than the thickness of slim vane.
The number of described thick blade is less than the number of slim vane.
Described thick blade arranges with slim vane uniform intervals.
What this utility model can reach has the technical effect that
This utility model can improve the efficiency of diffuser.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is this utility model schematic diagram for the vane diffuser of centrifugal compressor；
Fig. 2 is the schematic diagram of radial diffuser of the present utility model.
Description of reference numerals in figure:
1 is radial diffuser, and 2 is axial diffuser,
3 is the blade of radial diffuser, and 4 is blade throat,
5 is suction socket, and 6 is suction tube,
7 is suction socket, and 10 is impeller,
3-1 is main part, and 3-2 is medial segment,
3-10 is blade inlet edge.
Detailed description of the invention
As it is shown in figure 1, this utility model is for the vane diffuser of centrifugal compressor, including radial diffuser 1, radially expand
The blade inlet edge 3-10 of depressor 1 connects impeller 10 trailing edge of compressor by passage, and the trailing edge of radial diffuser 1 passes through gas
Body passage connects axial diffuser 2；
As in figure 2 it is shown, radial diffuser 1 includes the multiple blades 3 being uniformly distributed circumferentially, blade 3 radially extends；Leaf
The front side of sheet throat 4 offers suction socket 5 and suction socket 7, and suction socket 5 extends along the short transverse of blade 3；The one of suction socket 5
End is connected with suction socket 7, and the other end of suction socket 5 connects the arrival end of suction tube 6, and the port of export of suction tube 6 leads to radially
The blade inlet edge 3-10 of diffuser 1；
Suction socket 7 is connected with the space on front side of blade throat 4；
Blade 3 includes the medial segment 3-2 of main part 3-1 and nearly throat, and the medial segment 3-2 of blade uses homogeneous axial height
Degree and blade pitgh, so that flow area keeps homogeneous between throat's front vane；The main part 3-1 of blade is by after forward direction (i.e. in Fig. 1
Axial height (leaf is high) from bottom to top) is gradually increased, thus is pushed away downstream position, throat position, stays out for suction socket 5
If space, it is adjusted before throat after also allowing airflow into diffuser, reduces the loss that flow area sudden change causes.
Blade throat 4 refers to the position that between diffuser two blade, sectional area is minimum, is positioned near blade inlet edge 3-10.
Operation principle of the present utility model is as follows:
Boundary-layer gas on front side of blade throat enters the suction socket 5 of blade 3 through suction socket 7, is then taken out along suction tube 6
It is drawn onto the blade inlet edge 3-10 of radial diffuser 1, thus postpones the separation of blade throat 4 and surface gas afterwards, ensure simultaneously
Through-flow flow is constant.
Axially diffuser 2 includes multiple thick blades of being uniformly distributed circumferentially and multiple slim vane, and each blade prolongs vertically
Stretch；The thickness of thick blade is more than the thickness of slim vane；
The number of thick blade is less than the number of slim vane；As axial diffuser is made up of 7 thick blades, 35 slim vane；
Thick blade arranges with slim vane uniform intervals.
This axial diffuser utilizes the interaction of thickness blade can reduce air-flow and separates.
Claims (6)
1. the vane diffuser for centrifugal compressor, it is characterised in that: include radial diffuser (1), radial diffuser
(1) blade inlet edge (3-10) connects impeller (10) trailing edge of compressor by passage；
Radial diffuser (1) includes the multiple blades (3) being uniformly distributed circumferentially, and blade (3) radially extends；Blade (3)
The inner offers suction socket (5) and suction socket (7), suction socket (5) and suction socket (7) and is positioned at the front side of blade throat (4)；
Suction socket (5) extends along the short transverse of blade (3)；One end of suction socket (5) is connected with suction socket (7), suction socket
(5) the other end connects the arrival end of suction tube (6), and the port of export of suction tube (6) leads to the blade inlet edge of radial diffuser (1)
(3-10)；
Suction socket (7) is connected with the space of blade throat (4) front side.
Vane diffuser for centrifugal compressor the most according to claim 1, it is characterised in that: described blade (3) wraps
Including the medial segment (3-2) of main part (3-1) and nearly throat, the axial height of the medial segment (3-2) of blade is identical；The main body of blade
The axial height in portion (3-1) is gradually increased by after forward direction.
Vane diffuser for centrifugal compressor the most according to claim 1, it is characterised in that: also include axial diffusion
Device (2), the trailing edge of described radial diffuser (1) connects axial diffuser (2) by gas passage.
Vane diffuser for centrifugal compressor the most according to claim 3, it is characterised in that: described axial diffuser
(2) the multiple thick blades including being uniformly distributed circumferentially and multiple slim vane, each blade axially extends；The thickness of thick blade is big
Thickness in slim vane.
Vane diffuser for centrifugal compressor the most according to claim 4, it is characterised in that: described thick blade
Number is less than the number of slim vane.
Vane diffuser for centrifugal compressor the most according to claim 4, it is characterised in that: described thick blade is with thin
Blade uniform intervals arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620586699.9U CN205823738U (en) | 2016-06-16 | 2016-06-16 | Vane diffuser for centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620586699.9U CN205823738U (en) | 2016-06-16 | 2016-06-16 | Vane diffuser for centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823738U true CN205823738U (en) | 2016-12-21 |
Family
ID=57568332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620586699.9U Expired - Fee Related CN205823738U (en) | 2016-06-16 | 2016-06-16 | Vane diffuser for centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205823738U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798258A (en) * | 2019-01-11 | 2019-05-24 | 贵州永红航空机械有限责任公司 | A kind of aerodynamic structure |
| CN112160940A (en) * | 2020-09-07 | 2021-01-01 | 西北工业大学 | Low-loss tubular self-circulation treatment casing |
| CN112412885A (en) * | 2020-05-09 | 2021-02-26 | 北京理工大学 | Adjustable self-circulation air injection stability expansion structure and centrifugal compressor with stability expansion structure |
| CN112955661A (en) * | 2019-07-22 | 2021-06-11 | 开利公司 | Centrifugal or mixed flow compressor comprising a suction diffuser |
-
2016
- 2016-06-16 CN CN201620586699.9U patent/CN205823738U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798258A (en) * | 2019-01-11 | 2019-05-24 | 贵州永红航空机械有限责任公司 | A kind of aerodynamic structure |
| CN109798258B (en) * | 2019-01-11 | 2020-11-20 | 贵州永红航空机械有限责任公司 | Fan pneumatic structure |
| CN112955661A (en) * | 2019-07-22 | 2021-06-11 | 开利公司 | Centrifugal or mixed flow compressor comprising a suction diffuser |
| EP4004375A1 (en) * | 2019-07-22 | 2022-06-01 | Carrier Corporation | Centrifugal or mixed-flow compressor including aspirated diffuser |
| CN112412885A (en) * | 2020-05-09 | 2021-02-26 | 北京理工大学 | Adjustable self-circulation air injection stability expansion structure and centrifugal compressor with stability expansion structure |
| CN112412885B (en) * | 2020-05-09 | 2021-09-07 | 北京理工大学 | Adjustable self-circulation air injection stability expansion structure and centrifugal compressor with stability expansion structure |
| CN112160940A (en) * | 2020-09-07 | 2021-01-01 | 西北工业大学 | Low-loss tubular self-circulation treatment casing |
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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: 20161221 |