CN111997937B - Compressor with interstage stator - Google Patents
Compressor with interstage stator Download PDFInfo
- Publication number
- CN111997937B CN111997937B CN202010992131.8A CN202010992131A CN111997937B CN 111997937 B CN111997937 B CN 111997937B CN 202010992131 A CN202010992131 A CN 202010992131A CN 111997937 B CN111997937 B CN 111997937B
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- Prior art keywords
- arc
- shaped
- compressor
- interstage
- stator
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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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- 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
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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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 a compressor with interstage guide vanes, which comprises a multistage impeller and interstage guide vanes, wherein the interstage guide vanes comprise an upper-stage impeller outlet section, a bent pipe section, a backflow section and a lower-stage impeller inlet section which are sequentially connected, a plurality of first guide vanes arranged along the circumferential direction are arranged in the bent pipe section, a plurality of second guide vanes arranged along the circumferential direction are arranged in the backflow section, the first guide vanes are provided with a first front edge and a first rear edge, and the second guide vanes are provided with a second front edge and a second rear edge, and the compressor is characterized in that: the first rear edge is an arc-shaped bulge, the arc-shaped bulge protrudes downstream, the second front edge is an arc-shaped recess, the arc-shaped recess protrudes downstream, and the direction of the arc-shaped bulge is consistent with that of the arc-shaped recess. The interstage guide vane can reduce the eddy current of the bent pipe section, reduce the pressure loss of the bent pipe section and improve the performance of the compressor.
Description
Technical Field
The invention relates to the technical field of fluid conveying machinery (multi-stage compressors), in particular to a compressor with interstage guide vanes.
Background
The multistage compressor comprises a multistage impeller and interstage guide vanes, wherein the interstage guide vanes comprise an upper-stage impeller outlet section 1, a bent pipe section 2, a backflow section 3 and a lower-stage impeller inlet section 4 which are sequentially connected, a plurality of first guide vanes 5 arranged along the circumferential direction are arranged in the bent pipe section 2, a plurality of second guide vanes 6 arranged along the circumferential direction are arranged in the backflow section 3, the second guide vanes 6 are located at the downstream of the first guide vanes 5, the first guide vanes 5 are provided with first front edges and first rear edges, and the second guide vanes 6 are provided with second front edges and second rear edges (shown in figure 1). However, the existing interstage guide vane has the problems of pipe bending section vortex and large pressure loss.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a compressor with an interstage guide vane, wherein the interstage guide vane can reduce the vortex of a bent pipe section and reduce the pressure loss of the bent pipe section, so that the performance of the compressor is improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a compressor with interstage stator, its includes multistage impeller, interstage stator is including higher level impeller export section (1), elbow section (2), backward flow section (3), subordinate impeller inducer (4) that connect gradually, be equipped with a plurality of first stator (5) of arranging along circumference in the elbow section, be equipped with a plurality of second stator (6) of arranging along circumference in the backward flow section, the second stator is located the low reaches of first stator, first stator has first leading edge (51), first trailing edge (52), the second stator has second leading edge (61), second trailing edge (62), its characterized in that: the first rear edge is an arc-shaped bulge, the arc-shaped bulge protrudes downstream, the second front edge is an arc-shaped recess, the arc-shaped recess protrudes downstream, and the direction of the arc-shaped bulge is consistent with that of the arc-shaped recess.
Further, the first rear edge comprises a first arc-shaped part (53) and a second arc-shaped part (54), the curvatures of the first arc-shaped part and the second arc-shaped part are different, and the curvature of the first arc-shaped part is larger than that of the second arc-shaped part.
Further, the second front edge comprises a third arc-shaped part (63) and a fourth arc-shaped part (64), the curvatures of the third arc-shaped part and the fourth arc-shaped part are different, and the curvature of the third arc-shaped part is larger than that of the fourth arc-shaped part.
Further, the backflow section comprises a front side wall (65) and a rear side wall (66) which are oppositely arranged, and an included angle a is formed between the rear side wall and the front side wall/plumb line.
Further, the first arc-shaped part is arranged on one side close to the front side wall, the second arc-shaped part is arranged on one side close to the rear side wall, the radial height of the position where the first arc-shaped part is connected with the front side wall is smaller than the radial height of the position where the second arc-shaped part is connected with the rear side wall, and a radial height difference h1 exists between the first arc-shaped part and the second arc-shaped part.
Further, the third arc-shaped part is arranged on one side close to the front side wall, the fourth arc-shaped part is arranged on one side close to the rear side wall, the radial height of the position where the third arc-shaped part is connected with the front side wall is smaller than the radial height of the position where the fourth arc-shaped part is connected with the rear side wall, and a radial height difference h2 exists between the third arc-shaped part and the fourth arc-shaped part.
Further, the radial height difference h1 < h2, and h1= (0.5-0.9) h 2.
The invention relates to a compressor with an interstage guide vane, which can reduce the eddy current of a bent pipe section and reduce the pressure loss of the bent pipe section, thereby improving the performance of the compressor.
Drawings
FIG. 1 is a schematic illustration of a prior art compressor interstage vane configuration;
FIG. 2 is a schematic view of a compressor interstage vane configuration of the present invention;
FIG. 3 is a schematic view of a compressor interstage vane configuration of the present invention.
In the figure: the upper-stage impeller outlet section 1, the elbow section 2, the backflow section 3, the lower-stage impeller inlet section 4, the first guide vane 5, the second guide vane 6, the first front edge 51, the first rear edge 52, the first arc-shaped portion 53, the second arc-shaped portion 54, the second front edge 61, the second rear edge 62, the third arc-shaped portion 63, the fourth arc-shaped portion 64, the front side wall 65, and the rear side wall 66.
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. 2-3, a compressor with an interstage guide vane includes a multi-stage impeller and an interstage guide vane, the interstage guide vane includes an upper stage impeller outlet section 1, a bend section 2, a return section 3, and a lower stage impeller inlet section 4 which are connected in sequence, a plurality of circumferentially arranged first guide vanes 5 are arranged in the bend section 2, a plurality of circumferentially arranged second guide vanes 6 are arranged in the return section 3, the second guide vanes 6 are located downstream of the first guide vanes 5, the first guide vanes 5 have a first leading edge 51 and a first trailing edge 52, the second guide vanes 6 have a second leading edge 61 and a second trailing edge 62, and the compressor is characterized in that: the first rear edge 52 is an arc-shaped protrusion which protrudes downstream, the second front edge 61 is an arc-shaped recess which protrudes downstream, and the arc-shaped protrusion and the arc-shaped recess are in the same direction.
Further, the first rear edge 52 includes a first arc-shaped portion 53 and a second arc-shaped portion 54, and the curvatures of the first arc-shaped portion 53 and the second arc-shaped portion 54 are different, specifically, the curvature of the first arc-shaped portion 53 is greater than the curvature of the second arc-shaped portion 54.
Further, the second leading edge 61 includes a third arc-shaped portion 63 and a fourth arc-shaped portion 64, and the curvatures of the third arc-shaped portion 63 and the fourth arc-shaped portion 64 are different, specifically, the curvature of the third arc-shaped portion 63 is greater than the curvature of the fourth arc-shaped portion 64.
The invention relates to a compressor with an interstage guide vane, which can reduce the eddy current of a bent pipe section and reduce the pressure loss of the bent pipe section, thereby improving the performance of the compressor.
The return section 3 comprises oppositely arranged front and rear side walls 65, 66, the rear side wall 66 having an angle a with the front side wall 65/plumb line, a =2-6 °.
Further, the first arc-shaped portion 53 is disposed on a side close to the front side wall 65, the second arc-shaped portion 54 is disposed on a side close to the rear side wall 66, a radial height of a position where the first arc-shaped portion 53 is connected to the front side wall 65 is smaller than a radial height of a position where the second arc-shaped portion 54 is connected to the rear side wall 66, and a radial height difference h1 is provided therebetween.
Further, the third arc-shaped portion 63 is disposed on a side close to the front side wall 65, the fourth arc-shaped portion 64 is disposed on a side close to the rear side wall 66, a radial height of a position where the third arc-shaped portion 63 is connected with the front side wall 65 is smaller than a radial height of a position where the fourth arc-shaped portion 64 is connected with the rear side wall 66, and a radial height difference h2 is provided therebetween; h1 < h2, in particular h1= (0.6-0.8) h2, preferably h1=0.7h 2.
According to the compressor with the interstage guide vane, the vortex of the elbow section can be further reduced through the design of the interstage guide vane, the pressure loss of the elbow section is reduced, and therefore 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 (6)
1. The utility model provides a compressor with interstage stator, its includes multistage impeller, interstage stator is including higher level impeller export section (1), elbow section (2), backward flow section (3), subordinate impeller inducer (4) that connect gradually, be equipped with a plurality of first stator (5) of arranging along circumference in the elbow section, be equipped with a plurality of second stator (6) of arranging along circumference in the backward flow section, the second stator is located the low reaches of first stator, first stator has first leading edge (51), first trailing edge (52), the second stator has second leading edge (61), second trailing edge (62), its characterized in that: the first rear edge is an arc-shaped bulge, the arc-shaped bulge bulges towards the downstream, the second front edge is an arc-shaped recess, the arc-shaped recess is sunken towards the downstream, and the direction of the arc-shaped bulge is consistent with that of the arc-shaped recess; the first trailing edge comprises a first arc-shaped portion (53) and a second arc-shaped portion (54), the curvatures of the first arc-shaped portion and the second arc-shaped portion are different, and the curvature of the first arc-shaped portion is larger than that of the second arc-shaped portion.
2. The compressor having the interstage vane of claim 1, wherein the second leading edge includes a third arcuate portion (63), a fourth arcuate portion (64), the third arcuate portion and the fourth arcuate portion are unequal in curvature, and the third arcuate portion is greater in curvature than the fourth arcuate portion.
3. A compressor with interstage guide vane as claimed in claim 2 wherein the return section comprises a forward sidewall (65), an aft sidewall (66) disposed opposite, the aft sidewall having an angle a with the forward sidewall/plumb line.
4. A compressor having an interstage guide vane as claimed in claim 3, wherein the first arc portion is disposed on a side close to the forward sidewall, the second arc portion is disposed on a side close to the aft sidewall, a radial height of a position where the first arc portion is connected to the forward sidewall is smaller than a radial height of a position where the second arc portion is connected to the aft sidewall, and a radial height difference h1 is provided therebetween.
5. The compressor having the interstage guide vane as recited in claim 4, wherein the third arc portion is disposed on a side close to the forward sidewall, the fourth arc portion is disposed on a side close to the aft sidewall, a radial height of a position where the third arc portion is connected to the forward sidewall is smaller than a radial height of a position where the fourth arc portion is connected to the aft sidewall, and a radial height difference h2 is provided therebetween.
6. A compressor with interstage guide vane as claimed in claim 5 wherein the radial height difference h1 < h2 and h1= (0.5-0.9) h 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010992131.8A CN111997937B (en) | 2020-09-21 | 2020-09-21 | Compressor with interstage stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010992131.8A CN111997937B (en) | 2020-09-21 | 2020-09-21 | Compressor with interstage stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111997937A CN111997937A (en) | 2020-11-27 |
| CN111997937B true CN111997937B (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010992131.8A Active CN111997937B (en) | 2020-09-21 | 2020-09-21 | Compressor with interstage stator |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922856A (en) * | 2022-06-09 | 2022-08-19 | 浙江理工大学 | Guide vane structure suitable for liquefied natural gas immersed pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01257797A (en) * | 1988-04-05 | 1989-10-13 | Kawasaki Heavy Ind Ltd | Diffuser of centrifugal compressor and manufacture thereof |
| CN1271817A (en) * | 1993-10-18 | 2000-11-01 | 株式会社日立制作所 | Centrifuger for fluids |
| JP2013124624A (en) * | 2011-12-15 | 2013-06-24 | Mitsubishi Heavy Ind Ltd | Centrifugal turbomachine |
| DE102014219821A1 (en) * | 2014-09-30 | 2016-03-31 | Siemens Aktiengesellschaft | Return step |
| CN106979177A (en) * | 2016-01-18 | 2017-07-25 | 通用电气公司 | Turbo-compressor stator |
-
2020
- 2020-09-21 CN CN202010992131.8A patent/CN111997937B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01257797A (en) * | 1988-04-05 | 1989-10-13 | Kawasaki Heavy Ind Ltd | Diffuser of centrifugal compressor and manufacture thereof |
| CN1271817A (en) * | 1993-10-18 | 2000-11-01 | 株式会社日立制作所 | Centrifuger for fluids |
| JP2013124624A (en) * | 2011-12-15 | 2013-06-24 | Mitsubishi Heavy Ind Ltd | Centrifugal turbomachine |
| DE102014219821A1 (en) * | 2014-09-30 | 2016-03-31 | Siemens Aktiengesellschaft | Return step |
| CN106979177A (en) * | 2016-01-18 | 2017-07-25 | 通用电气公司 | Turbo-compressor stator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111997937A (en) | 2020-11-27 |
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Effective date of registration: 20230306 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. |