CN110454439B - Volute casing - Google Patents
Volute casing Download PDFInfo
- Publication number
- CN110454439B CN110454439B CN201910904517.6A CN201910904517A CN110454439B CN 110454439 B CN110454439 B CN 110454439B CN 201910904517 A CN201910904517 A CN 201910904517A CN 110454439 B CN110454439 B CN 110454439B
- Authority
- CN
- China
- Prior art keywords
- exhaust runner
- compressor
- volute
- stage
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of centrifugal compressors, and particularly discloses a volute, which comprises a volute body, and a first exhaust runner and a second exhaust runner which are arranged in the volute body and used for collecting gas, wherein two ends of the first exhaust runner are respectively communicated with an outlet end of a first-stage impeller of a compressor and an air inlet end of an intercooler; the first exhaust runner and the second exhaust runner are both rectangular and have rectangular cross sections. The volute with the structure can solve the problem that in the prior art, the axial width of the volute is large, so that the length of a main shaft of the compressor is long, and the design difficulty of the rotor dynamics of the compressor can be improved.
Description
Technical Field
The invention belongs to the technical field of centrifugal compressors, and particularly relates to a volute.
Background
As is well known, the large centrifugal refrigeration compressors used in the industries of coal chemical industry, petrochemical industry and the like at home and abroad at present all need to lead the gas compressed by the impeller to a cooler or lead the gas out of the compressor and enter a gas pipeline through a volute, so as to ensure the exhaust temperature of the gas, save energy and improve efficiency, the compressor can perform two-stage compression on the gas, the two-stage compression is divided into a first compressor stage and a second compressor stage, and the two-stage compression is respectively formed by combining a plurality of impellers. The axial width of the volute in the prior art is larger, so that the length of the main shaft of the compressor is longer, and the design difficulty of the rotor dynamics of the compressor can be improved.
Disclosure of Invention
The invention aims to provide a volute, which solves the problems that in the prior art, the axial width of the volute is large, so that the length of a main shaft of a compressor is long, and the design difficulty of the dynamics of a rotor of the compressor can be improved.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the volute comprises a volute body, and a first exhaust runner and a second exhaust runner which are arranged in the volute body and used for collecting gas, wherein two ends of the first exhaust runner are respectively communicated with an outlet end of a first-stage impeller of a compressor and an air inlet end of an intercooler; the first exhaust runner and the second exhaust runner are both rectangular and have rectangular cross sections.
The working principle of the technical scheme is as follows: the gas compressed by the first section of the compressor enters the intercooler from the outlet end of the last-stage impeller of the first section of the compressor through the first exhaust runner for cooling, the cooled gas enters the second section of the compressor for secondary compression, and the compressed gas enters the second exhaust runner from the outlet end of the last-stage impeller of the second section of the compressor and is then conveyed to the exhaust pipeline of the compressor.
The beneficial effects of this technical scheme lie in: according to the technical scheme, the first exhaust runner and the second exhaust runner with the rectangular cross sections are adopted, compared with the exhaust runner with the circular cross sections, the axial size of the volute is reduced under the condition that the flow area is ensured, the length of a main shaft of the compressor can be effectively reduced, and therefore the performance of the compressor is optimized.
Further, all impellers of the first section of the compressor and all impellers of the second section of the compressor are arranged in a back-to-back mode, one ends, close to each other, of the impellers of the first section of the compressor and the impellers of the second section of the compressor are tail ends, and the first exhaust runner and the second exhaust runner are arranged in a back-to-back mode.
Further, the cross-sectional areas of the first and second exhaust runners are gradually increased along with the gas flowing direction. The technical scheme can reduce the flow velocity of the gas.
Further, the volute body is made of cast steel.
Further, the first exhaust runner and the second exhaust runner are integrally molded. The first exhaust runner and the second exhaust runner which are integrally formed enable the assembly and the processing of the volute to be simpler.
Further, the first-stage part of the second section of the compressor is communicated with a second-stage air inlet pipe, a one-way air inlet valve is arranged on the second-stage air inlet pipe, and the air inlet end of the second-stage air inlet pipe is communicated with an air inlet tank.
Drawings
FIG. 1 is a schematic view of a scroll casing of the present invention applied to a compressor;
FIG. 2 is a cross-sectional view of a volute of the present invention;
FIG. 3 is a cross-sectional view of B-B in FIG. 2;
fig. 4 is a cross-sectional view of C-C of fig. 2.
Detailed Description
The following is a further detailed description of the embodiments:
Reference numerals in the drawings of the specification include: the device comprises a first exhaust runner 1, a second exhaust runner 2, a first section of final-stage impeller 3 of a compressor, a second section of final-stage impeller 4 of the compressor and a volute body 5.
The embodiment is basically as shown in the accompanying figures 1-4: a volute comprises a volute body 5, a first exhaust runner 1 and a second exhaust runner 2 which are arranged in the volute body 5 and used for collecting gas, wherein the volute body 1 is made of cast steel. The two ends of the first exhaust runner 1 are respectively communicated with the outlet end of the first-stage impeller 3 of the compressor and the air inlet end of the intercooler, the exhaust end of the intercooler is communicated with the inlet end of the second-stage impeller of the compressor, and the two ends of the second exhaust runner 2 are respectively communicated with the outlet end of the second-stage impeller 4 of the compressor and the air pipeline; the cross sections of the first exhaust runner 1 and the second exhaust runner 2 are rectangular. All impellers of the first section of the compressor and all impellers of the second section of the compressor are arranged in a back-to-back mode, the outlet end of the last-stage impeller 3 of the first section of the compressor and the outlet end of the last-stage impeller 4 of the second section of the compressor are close to each other, and the first exhaust runner 1 and the second exhaust runner 2 are arranged in a back-to-back mode. The cross-sectional areas of the first exhaust runner 1 and the second exhaust runner 2 are gradually increased with the gas flow direction. The first exhaust runner 1 and the second exhaust runner 2 are integrally formed, and the first exhaust runner 1 and the second exhaust runner 2 which are integrally formed enable assembly and machining of the volute to be simpler. The first stage of the second section of the compressor is communicated with a second-stage air inlet pipe, a one-way air inlet valve is arranged on the second-stage air inlet pipe, and the air inlet end of the second-stage air inlet pipe is communicated with an air inlet tank.
The specific implementation process is as follows:
The gas compressed by the first section of the compressor enters an intercooler from the outlet end of the last-stage impeller 3 of the first section of the compressor through the first exhaust runner 1 for cooling, the cooled gas enters the second section of the compressor for secondary compression, and the compressed gas enters the second exhaust runner 2 from the outlet end of the last-stage impeller 4 of the second section of the compressor and is then conveyed to an exhaust pipeline of the compressor. In the process, the gas in the gas inlet tank can enter the second section of the compressor through the second-stage gas inlet pipe for compression.
The foregoing is merely exemplary embodiments of the present application, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (5)
1. A volute, characterized by: the device comprises a volute body, and a first exhaust runner and a second exhaust runner which are arranged in the volute body and used for collecting gas, wherein two ends of the first exhaust runner are respectively communicated with an outlet end of a first-stage impeller of a compressor and an air inlet end of an intercooler; the first exhaust runner and the second exhaust runner are both rectangular and have rectangular sections; the first exhaust runner and the second exhaust runner are opposite in rotation direction; the inner sides of the first-stage final-stage impeller and the second-stage final-stage impeller of the compressor are respectively arranged at two sides in the volute body; the cross sections of the first exhaust runner and the second exhaust runner are gradually increased along with the flowing direction of the gas.
2. A volute according to claim 1, wherein: all impellers of the first section of the compressor and all impellers of the second section of the compressor are arranged in a back-to-back mode, the outlet end of the last-stage impeller of the first section of the compressor and the outlet end of the second-stage impeller of the compressor are close to each other, and the first exhaust runner and the second exhaust runner are arranged in a back-to-back mode.
3. A volute according to claim 1, wherein: the volute body is made of cast steel.
4. A volute according to claim 1, wherein: the first exhaust runner and the second exhaust runner are integrally formed.
5. A volute according to claim 1, wherein: the first stage of the second section of the compressor is communicated with a second-stage air inlet pipe, a one-way air inlet valve is arranged on the second-stage air inlet pipe, and the air inlet end of the second-stage air inlet pipe is communicated with an air inlet tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904517.6A CN110454439B (en) | 2019-09-24 | 2019-09-24 | Volute casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904517.6A CN110454439B (en) | 2019-09-24 | 2019-09-24 | Volute casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110454439A CN110454439A (en) | 2019-11-15 |
| CN110454439B true CN110454439B (en) | 2024-06-07 |
Family
ID=68492632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910904517.6A Active CN110454439B (en) | 2019-09-24 | 2019-09-24 | Volute casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110454439B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111683A (en) * | 2004-12-03 | 2008-01-23 | 霍尼韦尔有限公司 | Multi-stage compressor and housing therefor |
| CN101929359A (en) * | 2009-03-11 | 2010-12-29 | 通用汽车环球科技运作公司 | Turbine cylinder with asymmetric split-inlet |
| GB201020131D0 (en) * | 2010-11-29 | 2011-01-12 | Corac Group Plc | Impeller |
| CN102808785A (en) * | 2012-07-19 | 2012-12-05 | 无锡杰尔压缩机有限公司 | Secondary high-speed centrifugal compressor |
| CN202597263U (en) * | 2012-04-16 | 2012-12-12 | 杭州杭氧透平机械有限公司 | Large-flow single-shaft constant-temperature air-compressor spiral casing structure |
| CN203516203U (en) * | 2013-10-29 | 2014-04-02 | 中联重科股份有限公司 | Centrifugal fan volute, centrifugal fan and sweeping machine |
| CN204253443U (en) * | 2014-10-15 | 2015-04-08 | 长沙中粮机械有限公司 | For afflux spiral case and the centrifugal blower of centrifugal blower |
| CN109869222A (en) * | 2019-04-03 | 2019-06-11 | 大连依勒斯涡轮增压技术有限公司 | A kind of pressure charging system and its centrifugal compressor |
| CN211039151U (en) * | 2019-09-24 | 2020-07-17 | 重庆通用工业(集团)有限责任公司 | Volute casing |
-
2019
- 2019-09-24 CN CN201910904517.6A patent/CN110454439B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111683A (en) * | 2004-12-03 | 2008-01-23 | 霍尼韦尔有限公司 | Multi-stage compressor and housing therefor |
| CN101929359A (en) * | 2009-03-11 | 2010-12-29 | 通用汽车环球科技运作公司 | Turbine cylinder with asymmetric split-inlet |
| GB201020131D0 (en) * | 2010-11-29 | 2011-01-12 | Corac Group Plc | Impeller |
| CN202597263U (en) * | 2012-04-16 | 2012-12-12 | 杭州杭氧透平机械有限公司 | Large-flow single-shaft constant-temperature air-compressor spiral casing structure |
| CN102808785A (en) * | 2012-07-19 | 2012-12-05 | 无锡杰尔压缩机有限公司 | Secondary high-speed centrifugal compressor |
| CN203516203U (en) * | 2013-10-29 | 2014-04-02 | 中联重科股份有限公司 | Centrifugal fan volute, centrifugal fan and sweeping machine |
| CN204253443U (en) * | 2014-10-15 | 2015-04-08 | 长沙中粮机械有限公司 | For afflux spiral case and the centrifugal blower of centrifugal blower |
| CN109869222A (en) * | 2019-04-03 | 2019-06-11 | 大连依勒斯涡轮增压技术有限公司 | A kind of pressure charging system and its centrifugal compressor |
| CN211039151U (en) * | 2019-09-24 | 2020-07-17 | 重庆通用工业(集团)有限责任公司 | Volute casing |
Non-Patent Citations (1)
| Title |
|---|
| 离心压缩机圆截面外蜗壳型线改进的数值研究;马峰等;《流体机械》;20180930(第9期);第26-31页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110454439A (en) | 2019-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9874224B2 (en) | Centrifugal compressor and turbocharger | |
| US20160177954A1 (en) | Multi-stage centrifugal compressor and air conditioning unit | |
| CN109268295A (en) | A kind of two-stage air compression system with diameter axial direction diffuser | |
| CN107013497B (en) | Reflux vane, compressor structure and compressor | |
| CN106151063B (en) | CO circulating gas compressor | |
| CN101985897A (en) | Complex turbine device with variable section | |
| CN209212609U (en) | A kind of two-stage air compression system with diameter axial direction diffuser | |
| CN108317092B (en) | Impeller and centrifugal compressor comprising same | |
| CN211039151U (en) | Volute casing | |
| CN107023516A (en) | Diffuser blade, compressor structure and compressor | |
| CN110454439B (en) | Volute casing | |
| CN201802444U (en) | Compound turbine device with variable cross-section | |
| CN110671364A (en) | Integrally-manufactured volute and steam compressor thereof | |
| WO2022111411A1 (en) | Centrifugal compressor | |
| CN105298921A (en) | Inter-stage U-shaped mixing diffuser for two-stage centrifugal gas compressor | |
| CN206368831U (en) | VPSA atm number centrifugal vacuum pumps | |
| CN214273971U (en) | Centrifugal compressor and volute thereof | |
| CN204164008U (en) | A kind of centrifugal compressor | |
| CN211599032U (en) | Air compressor with supercharging and inter-cooling functions for fuel cell | |
| CN114151195A (en) | Novel exhaust diffuser structure capable of improving pneumatic performance | |
| CN211116803U (en) | Integrally-manufactured volute and steam compressor thereof | |
| CN211623754U (en) | Centrifugal low-pressure air compressor | |
| CN106593899A (en) | VPSA large-capacity centrifugal vacuum pump | |
| CN101922461A (en) | Double-impeller centrifugal blower | |
| CN201650801U (en) | Double-impeller centrifugal blower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |