CN111608931A - Interstage return guide vane of compressor - Google Patents
Interstage return guide vane of compressor Download PDFInfo
- Publication number
- CN111608931A CN111608931A CN202010460564.9A CN202010460564A CN111608931A CN 111608931 A CN111608931 A CN 111608931A CN 202010460564 A CN202010460564 A CN 202010460564A CN 111608931 A CN111608931 A CN 111608931A
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- Prior art keywords
- guide vane
- stator
- compressor
- vane
- interstage
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
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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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
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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 interstage return guide vane of a compressor, which comprises a bottom plate (1), a plurality of first guide vanes (2) and a plurality of second guide vanes (3), wherein the first guide vanes and the second guide vanes are arranged in a staggered and spaced mode along the circumferential direction of the bottom plate, the radial length sizes of the first guide vanes and the second guide vanes are different, and the first guide vanes and the second guide vanes are arc-shaped guide vanes, and the interstage return guide vane is characterized in that: radial inner of first stator (2) is equipped with bodiness arc portion (4), and the thickness of bodiness arc portion is greater than the thickness of first stator body portion, and the radial length of bodiness arc portion is less than the radial length of first stator body portion, and bodiness arc portion is oval structure or toper "tumbler" shape structure. The structure of the reverse guide vane can effectively reduce the pressure loss in an interstage reverse guide vane flow path, reduce turbulent flow at the radial outer end of the reverse guide vane, and reduce the wall attached laminar flow at the radial inner end of the reverse guide vane, thereby improving the performance of the compressor.
Description
Technical Field
The invention relates to the technical field of fluid machinery, in particular to an interstage return guide vane of a compressor.
Background
The multistage compressor comprises multistage impellers and interstage return guide vanes located between the impellers, and the existing return guide vanes are generally two-dimensional cylindrical return guide vanes or three-dimensional twisted return guide vanes. But the current two-dimensional cylinder counter guide vane has the great problem of pressure loss.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an interstage return guide vane of a compressor, which can effectively reduce the pressure loss in a flow path of the interstage return guide vane, reduce the turbulent flow at the radial outer end of the return guide vane, and reduce the wall attached laminar flow at the radial inner end of the return guide vane, thereby improving the performance of the compressor.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an interstage turning vane of compressor, its includes bottom plate (1), a plurality of first stator (2), a plurality of second stator (3), and a plurality of first stator, a plurality of second stator arrange the setting along the crisscross interval of circumference of bottom plate, and the radial length size of first stator, second stator is unequal, and first stator, second stator are arc stator, its characterized in that: radial inner of first stator (2) is equipped with bodiness arc portion (4), and the thickness of bodiness arc portion is greater than the thickness of first stator body portion, and the radial length of bodiness arc portion is less than the radial length of first stator body portion, and bodiness arc portion is oval structure or toper "tumbler" shape structure.
Furthermore, the second guide vane comprises a top edge (5), a radial outer edge (6) and a radial inner edge (7), the top edge and the bottom plate are arranged oppositely and are respectively located on two sides of the second guide vane, the top edge is in a step shape, and the height dimension of the step shape is gradually reduced from the radial outer edge to the radial inner edge.
Further, the thickness of the thickened arc-shaped part is 3-6 times of the thickness of the first guide vane body part; the radial length of the thickened arc-shaped part is 0.15-0.4 times of the radial length of the first guide vane body part.
Further, the second guide vane has a first circumferential gap S1 with the first guide vane adjacent thereto on one side, and a second circumferential gap S2, S1= (0.35-0.65) S2 with the first guide vane adjacent thereto on the other side.
Further, the radial outer end size of the first guide vane and the radial outer end size of the second guide vane are equal, and the radial length of the first guide vane is 1.5-3.5 times of the radial length of the second guide vane.
Further, the height dimension of the radially inner edge is 0.4-0.65 times the height dimension of the radially outer edge.
Further, the elliptical structure or the conical tumbler-shaped structure is in arc transition with the first guide vane body part.
The interstage return guide vane of the compressor can effectively reduce pressure loss in a flow path of the interstage return guide vane, reduce turbulence at the radial outer end of the return guide vane, and reduce wall attached laminar flow at the radial inner end of the return guide vane, so that the performance of the compressor is improved.
Drawings
FIG. 1 is a schematic view of a reaction vane configuration of the present invention;
fig. 2 is a schematic structural view (axial section/P-direction view) of a second guide vane of the present invention.
In the figure: the guide vane structure comprises a bottom plate 1, a first guide vane 2, a second guide vane 3, a thickening arc-shaped part 4, a top edge 5, a radial outer edge 6 and a radial inner edge 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-2, an interstage return guide vane of a compressor comprises a bottom plate 1, a plurality of first guide vanes 2 and a plurality of second guide vanes 3, wherein the plurality of first guide vanes 2 and the plurality of second guide vanes 3 are arranged along the circumferential direction of the bottom plate 1 in a staggered and spaced manner, and the radial length dimensions of the first guide vanes 2 and the second guide vanes 3 are different; the radial inner end of the first guide vane 2 is provided with a thickened arc-shaped part 4. The first guide vane 2 and the second guide vane 3 are arc-shaped guide vanes, the radial outer ends of the first guide vane 2 and the second guide vane 3 are equal in size, and the radial length of the first guide vane 2 is 1.5-3.5 times that of the second guide vane 3.
The thickness of the thickened arc-shaped portion 4 is 3-6 times, preferably 4.5 times, the thickness of the body portion of the first vane 2 (excluding the thickened arc-shaped portion 4 portion); the radial length of the thickened arc-shaped portion 4 is 0.15-0.4 times, preferably 0.25 times the radial length of the body portion of the first vane 2. The second guide vane 3 has a first circumferential gap S1 with its adjacent first guide vane 2 on one side, and the second guide vane 3 has a second circumferential gap S2 with its adjacent first guide vane 2 on the other side, S1= (0.35-0.65) S2, preferably 0.5. The interstage return guide vane structure can effectively reduce pressure loss in the interstage return guide vane flow path, reduce turbulence at the radial outer end of the return guide vane, and reduce coanda laminar flow at the radial inner end of the return guide vane, so that the performance of the compressor is improved.
Further, thickening arc portion 4 is the oval structure, and oval structure and first stator 2 body portion arc transition.
Further, the second guide vane 3 comprises a top edge 5, a radial outer edge 6 and a radial inner edge 7, the top edge 5 is arranged opposite to the bottom plate 1 and is respectively positioned at two sides of the second guide vane 3, the top edge 5 is in a step shape, the height dimension of the step shape is gradually reduced from the radial outer edge 6 to the radial inner edge 7, and the height dimension of the radial inner edge 7 is 0.4-0.65 times, preferably 0.55 times, the height dimension of the radial outer edge 6. The interstage return guide vane structure can further reduce pressure loss in the interstage return guide vane flow path, reduce turbulence at the radial outer end of the return guide vane, and reduce coanda laminar flow at the radial inner end of the return guide vane, so that the performance of the compressor is improved.
A compressor comprises a plurality of stages of impellers, and interstage return guide vanes are arranged between two adjacent impellers.
The interstage return guide vane of the compressor can effectively reduce pressure loss in a flow path of the interstage return guide vane, reduce turbulence at the radial outer end of the return guide vane, and reduce wall attached laminar flow at the radial inner end of the return guide vane, so that the performance of the compressor is improved.
The above-described embodiments are illustrative of the present invention and not restrictive, it being understood that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides an interstage turning vane of compressor, its includes bottom plate (1), a plurality of first stator (2), a plurality of second stator (3), and a plurality of first stator, a plurality of second stator arrange the setting along the crisscross interval of circumference of bottom plate, and the radial length size of first stator, second stator is unequal, and first stator, second stator are arc stator, its characterized in that: radial inner of first stator (2) is equipped with bodiness arc portion (4), and the thickness of bodiness arc portion is greater than the thickness of first stator body portion, and the radial length of bodiness arc portion is less than the radial length of first stator body portion, and bodiness arc portion is oval structure or toper "tumbler" shape structure.
2. The interstage counter guide vane of a compressor as set forth in claim 1, wherein the second guide vane includes a top edge (5), a radially outer edge (6), and a radially inner edge (7), the top edge and the bottom plate are disposed opposite to each other and are respectively disposed on both sides of the second guide vane, the top edge is stepped, and the height dimension of the step is gradually reduced from the radially outer edge to the radially inner edge.
3. The interstage return vane of a compressor as set forth in claim 2, wherein a thickness of the thickened arc portion is 3-6 times a thickness of the first vane body portion; the radial length of the thickened arc-shaped part is 0.15-0.4 times of the radial length of the first guide vane body part.
4. An interstage counter guide vane of a compressor as claimed in claim 2 or 3, wherein said second guide vane has a first circumferential gap S1 with its adjacent first guide vane on one side and a second circumferential gap S2 with its adjacent first guide vane on the other side, S1= (0.35-0.65) S2.
5. An interstage return guide vane of a compressor as set forth in claim 2 or 3, wherein the radial outer ends of said first and second guide vanes are equal in size, and the radial length of the first guide vane is 1.5-3.5 times the radial length of the second guide vane.
6. An interstage return guide vane of a compressor as set forth in claim 2 or 3, characterized in that a height dimension of said radially inner edge is 0.4-0.65 times a height dimension of said radially outer edge.
7. An interstage return vane of a compressor as set forth in claim 2 or 3, characterized in that said oval or conical "tumbler" shaped structure is in arc transition with the first vane body portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460564.9A CN111608931B (en) | 2020-05-27 | 2020-05-27 | Interstage return guide vane of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460564.9A CN111608931B (en) | 2020-05-27 | 2020-05-27 | Interstage return guide vane of compressor |
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| CN111608931A true CN111608931A (en) | 2020-09-01 |
| CN111608931B CN111608931B (en) | 2021-10-08 |
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| CN202010460564.9A Active CN111608931B (en) | 2020-05-27 | 2020-05-27 | Interstage return guide vane of compressor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169598A (en) * | 1996-12-13 | 1998-06-23 | Hitachi Ltd | Centrifugal fluid machinery |
| JP2010216456A (en) * | 2009-03-19 | 2010-09-30 | Hitachi Plant Technologies Ltd | Multistage centrifugal compressor, and method for remodeling multistage centrifugal compressor |
| JP2015094293A (en) * | 2013-11-12 | 2015-05-18 | 株式会社日立製作所 | Centrifugal turbomachine |
| CN109989943A (en) * | 2019-04-18 | 2019-07-09 | 江苏大学 | A kind of multistage pump return guide vane splitterr vanes and design method |
| CN110107539A (en) * | 2019-05-22 | 2019-08-09 | 溧阳市盛杰机械有限公司 | A kind of anti-ballistic impeller structure for fluid machinery |
| CN110159595A (en) * | 2019-05-29 | 2019-08-23 | 江苏大学 | A kind of multistage pump return guide vane increasing runner and runner increase method |
| CN110397628A (en) * | 2019-08-14 | 2019-11-01 | 溧阳市盛杰机械有限公司 | Return guide vane between a kind of grade for multiple stage fluid machinery |
-
2020
- 2020-05-27 CN CN202010460564.9A patent/CN111608931B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169598A (en) * | 1996-12-13 | 1998-06-23 | Hitachi Ltd | Centrifugal fluid machinery |
| JP2010216456A (en) * | 2009-03-19 | 2010-09-30 | Hitachi Plant Technologies Ltd | Multistage centrifugal compressor, and method for remodeling multistage centrifugal compressor |
| JP2015094293A (en) * | 2013-11-12 | 2015-05-18 | 株式会社日立製作所 | Centrifugal turbomachine |
| CN109989943A (en) * | 2019-04-18 | 2019-07-09 | 江苏大学 | A kind of multistage pump return guide vane splitterr vanes and design method |
| CN110107539A (en) * | 2019-05-22 | 2019-08-09 | 溧阳市盛杰机械有限公司 | A kind of anti-ballistic impeller structure for fluid machinery |
| CN110159595A (en) * | 2019-05-29 | 2019-08-23 | 江苏大学 | A kind of multistage pump return guide vane increasing runner and runner increase method |
| CN110397628A (en) * | 2019-08-14 | 2019-11-01 | 溧阳市盛杰机械有限公司 | Return guide vane between a kind of grade for multiple stage fluid machinery |
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| Publication number | Publication date |
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| CN111608931B (en) | 2021-10-08 |
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Effective date of registration: 20230308 Address after: 214000 18-13 Zhenze Road, Xinwu District, Wuxi City, Jiangsu Province Patentee after: TAILINGTE COMPRESSOR WUXI Co.,Ltd. Address before: 330000 No. 899 Torch Five Road, Nanchang High-tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee before: JIANGXI ZIXUAN TECHNOLOGY CO.,LTD. |
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