SU1308781A1 - Vaneless diffuser of centrifugal compressor - Google Patents
Vaneless diffuser of centrifugal compressor Download PDFInfo
- Publication number
- SU1308781A1 SU1308781A1 SU853980581A SU3980581A SU1308781A1 SU 1308781 A1 SU1308781 A1 SU 1308781A1 SU 853980581 A SU853980581 A SU 853980581A SU 3980581 A SU3980581 A SU 3980581A SU 1308781 A1 SU1308781 A1 SU 1308781A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- flow
- wall
- diffuser
- chamber
- boundary layer
- Prior art date
Links
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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Изобретение относитс к компрес- соростроению и позвол ет снизить гидравлические потери. Вихревые камеры 2, вьшолненные в кольцевых стенках 1 диффузора, ориентированы в направлении от одной цилиндрической поверхности каждой стенки 1 к другой и сопр жены между собой. Поверхность 5 каждой камеры 2 может иметь форму конуса. На участке аЬ течение носит диффузорный характер, однако потери энергии в пограничном слое у каждой стенки незначительны. На участке be течение конфузорное и пограничный слой уплотн етс , что в результате ведет к снижению гидравлических потерь . 1 з.п, ф-лы, 3 ил. (Л фиг.ЗThe invention relates to compressor building and reduces hydraulic losses. The vortex chambers 2, which are made in the annular walls 1 of the diffuser, are oriented in the direction from one cylindrical surface of each wall 1 to the other and are interconnected. The surface 5 of each chamber 2 may have the shape of a cone. At section ab, the flow is diffusive, but the energy losses in the boundary layer near each wall are insignificant. In the area of be, the flow confused and the boundary layer is compacted, resulting in a decrease in hydraulic losses. 1 з.п, ф-л, 3 Il. (L fig.Z
Description
1one
Изобретение относитс к компрессо- ростроению и может быть использовано в безлопаточных диффузорах центробежных компрессоров.The invention relates to a compressor industry and can be used in bezlostatochny diffusers of centrifugal compressors.
Цель изобретени - снижение гидравлических потерь.The purpose of the invention is to reduce hydraulic losses.
На фиг. 1 показан диффузор, продольный разрез; на фиг, 2 - вид А на фиг. 1 на фиг. 3 - картина течени в диффузоре.FIG. 1 shows a diffuser, a longitudinal section; FIG. 2 is a view A of FIG. 1 in FIG. 3 - picture of the flow in the diffuser.
Безлопаточный диффузор центробежного компрессора содержит кольцевые стенки 1 с вьшолненными в них вихревыми камерами 2. Камеры 2 ориентированы в направлении от одной цилиндрической поверхности 3 каждой стенки 1 к другой цилиндрической поверхности 4 и сопр жены между собой. Поверхность 5 каждой камеры 2 может иметь форму конуса оThe no-blade diffuser of a centrifugal compressor contains annular walls 1 with vortex chambers 2 filled into them. Chambers 2 are oriented in the direction from one cylindrical surface 3 of each wall 1 to another cylindrical surface 4 and are interconnected. The surface 5 of each chamber 2 may have the shape of a cone o
Диффузор работает следующим образом .The diffuser works as follows.
Рабочее тело поступает из рабочего колеса компрессора в кольцевое пространство между стенками 1 диффузора Вихревые камеры 2 ориентирова13087812The working fluid comes from the impeller of the compressor in the annular space between the walls 1 of the diffuser Swirl chambers 2 orientation13087812
ны поперек вектору скорости рабочегоus across the speed vector of the worker
10ten
1515
2020
2525
тела. При этом на участке а-Ь в течение носит диффузорный характер, однако , обтека сто чий вихрь в камере, потери энергии в пограничном слое у каждой стенки незначительны. На участке Ь-с течение конфузорное и пограничный слой уплотн етс .body. In this case, in the area a – b, the flow is diffusive in nature; however, the flow around the standing vortex in the chamber, the energy losses in the boundary layer near each wall are insignificant. In the bc section, the confused flow and the boundary layer is compacted.
Таким образом, течение в таком диффузоре характеризуетс снижением гидравлических потерь.Thus, the flow in such a diffuser is characterized by a decrease in hydraulic losses.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU853980581A SU1308781A1 (en) | 1985-11-26 | 1985-11-26 | Vaneless diffuser of centrifugal compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU853980581A SU1308781A1 (en) | 1985-11-26 | 1985-11-26 | Vaneless diffuser of centrifugal compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1308781A1 true SU1308781A1 (en) | 1987-05-07 |
Family
ID=21206678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU853980581A SU1308781A1 (en) | 1985-11-26 | 1985-11-26 | Vaneless diffuser of centrifugal compressor |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1308781A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013002667A1 (en) * | 2011-06-30 | 2013-01-03 | Pratt & Whitney Canada Corp | Diffuser pipe and assembly for gas turbine engine |
US9874223B2 (en) | 2013-06-17 | 2018-01-23 | Pratt & Whitney Canada Corp. | Diffuser pipe for a gas turbine engine and method for manufacturing same |
CN114321016A (en) * | 2021-12-28 | 2022-04-12 | 上海智能网联汽车技术中心有限公司 | Two-dimensional zigzag groove device similar to sharkskin |
-
1985
- 1985-11-26 SU SU853980581A patent/SU1308781A1/en active
Non-Patent Citations (1)
Title |
---|
Авторское свидетельство СССР № 591615, кл. F Q4 D 17/00, 1974. * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013002667A1 (en) * | 2011-06-30 | 2013-01-03 | Pratt & Whitney Canada Corp | Diffuser pipe and assembly for gas turbine engine |
US8425188B2 (en) | 2011-06-30 | 2013-04-23 | Pratt & Whitney Canada Corp. | Diffuser pipe and assembly for gas turbine engine |
US9874223B2 (en) | 2013-06-17 | 2018-01-23 | Pratt & Whitney Canada Corp. | Diffuser pipe for a gas turbine engine and method for manufacturing same |
CN114321016A (en) * | 2021-12-28 | 2022-04-12 | 上海智能网联汽车技术中心有限公司 | Two-dimensional zigzag groove device similar to sharkskin |
CN114321016B (en) * | 2021-12-28 | 2024-01-09 | 上海智能网联汽车技术中心有限公司 | Two-dimensional serrated groove device similar to shark skin |
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