WO2017028319A1 - Compresseur centrifuge et son rouet - Google Patents

Compresseur centrifuge et son rouet Download PDF

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Publication number
WO2017028319A1
WO2017028319A1 PCT/CN2015/087712 CN2015087712W WO2017028319A1 WO 2017028319 A1 WO2017028319 A1 WO 2017028319A1 CN 2015087712 W CN2015087712 W CN 2015087712W WO 2017028319 A1 WO2017028319 A1 WO 2017028319A1
Authority
WO
WIPO (PCT)
Prior art keywords
hub
flow passage
diffuser
annular flange
impeller
Prior art date
Application number
PCT/CN2015/087712
Other languages
English (en)
Chinese (zh)
Inventor
王志强
黄子彬
Original Assignee
深圳智慧能源技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 深圳智慧能源技术有限公司 filed Critical 深圳智慧能源技术有限公司
Priority to PCT/CN2015/087712 priority Critical patent/WO2017028319A1/fr
Publication of WO2017028319A1 publication Critical patent/WO2017028319A1/fr

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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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal 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
    • F04D29/40—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

Definitions

  • the present invention relates to a centrifugal compressor, and more particularly to an impeller of a centrifugal compressor.
  • Centrifugal compressors include an impeller, a diffuser, and a wheel cover.
  • the impeller generally includes a hub and a plurality of vanes disposed on the hub, the wheel shroud being positioned axially relative to the impeller.
  • the tip of the blade is generally flush with the annular edge of the outlet end of the hub.
  • the edge of the impeller may collide with other components, such as diffusers, due to vibration or bearing failure, etc., and may also cause blade damage.
  • the prior art forms a large gap between the diffuser and the impeller, ensuring that even if the above abnormality occurs, the collision does not occur, so that This protects the blades.
  • the larger gap between the diffuser and the impeller utilizes other structural designs for the transition.
  • this paper proposes a centrifugal compressor capable of protecting the blade and simplifying the mounting position.
  • An impeller of a centrifugal compressor as set forth herein includes a hub rotatable about an axis and a plurality of blades, the hub having an arcuate flow passage surface, the plurality of vanes being disposed on the curved flow passage surface, each A blade extends from the runner inlet of the hub to the runner outlet of the hub.
  • the hub is provided with an annular flange at the flow passage outlet, the annular flange protruding radially beyond the tip of the blade.
  • the surface of the annular flange is smoothly connected to the arcuate flow passage surface.
  • the centrifugal compressor proposed in this paper includes a centrifugal impeller and a diffuser.
  • the centrifugal impeller includes a hub rotatable about an axis and a plurality of blades, the hub having an arcuate flow passage surface, the plurality of vanes being disposed on the curved flow passage surface, each vane being from the hub
  • the runner inlet extends to the runner outlet of the hub.
  • the diffuser surrounds a flow passage outlet of the hub.
  • the hub is provided at its flow passage outlet with an annular flange that protrudes radially beyond the tip of the blade, the annular flange having a smooth connection with the flow passage surface A flange surface, the diffuser having a flat surface perpendicular to the axis, the flat surface of the diffuser being flush with a radially outermost edge of the flange surface.
  • the centrifugal compressor includes a wheel cover that covers the plurality of blades and forms an axial gap with the plurality of blades.
  • the diffuser includes a plurality of diffuser vanes disposed on a flat surface of the diffuser, the wheel shroud being in contact with the diffuser vanes.
  • the hub of the impeller is provided at the runner outlet with an annular flange that projects radially beyond the tip of the blade. Even in exceptional situations, it is most likely that the flange collides with other components, rather than the blade colliding with other components.
  • the presence of the annular flange thus provides protection to the blade.
  • the radial spacing between the diffuser and the impeller can be reduced, which facilitates improved aerodynamic performance. After the gap is reduced, there is no need to pass other structural designs to make the transition between the impeller and the diffuser.
  • the radially outermost edge of the annular flange can be used as a mounting calibration point. After the diffuser is accurately positioned, the wheel cover is directly pushed into contact with the diffuser vanes of the diffuser to achieve precise positioning of the wheel cover, and thus the present invention This makes it possible to simplify the positioning of the compressor.
  • FIG. 1 is a schematic cross-sectional view showing a partial structure of an embodiment of a centrifugal compressor.
  • Figure 2 is an enlarged view of the annular flange portion of Figure 1.
  • Figure 3 is a perspective view of an embodiment of an impeller.
  • Fig. 1 is a cross-sectional view showing a portion of a configuration of a centrifugal compressor
  • Fig. 2 is an enlarged view of a portion of the annular flange of Fig. 1
  • Fig. 3 is a perspective view showing an embodiment of the impeller.
  • the centrifugal compressor 10 includes a centrifugal impeller 12, a diffuser 14, and a wheel house 16.
  • the centrifugal impeller 12 includes a hub 18 rotatable about an axis and a plurality of vanes 20 coupled to the hub 18.
  • the hub 18 has an arcuate flow passage surface 22.
  • the plurality of vanes 20 are disposed on the curved flow passage surface 22, wherein the vanes 20, the hub 18 and the wheel house 16 collectively form a flow passage of the hub 18.
  • Each vane 20 extends from the runner inlet 24 of the hub 18 to the runner outlet 26 of the hub 18.
  • the hub 18 defines an annular flange 28 at the runner exit 26.
  • the annular flange 28 projects radially beyond the tip of the blade 20.
  • the annular flange 28 has a flange surface 30 that is smoothly coupled to the hub flow passage surface 22. Since the hub 18 is provided with an annular flange 28 outside the tip of the blade 20, even if it collides with other components, it is more likely that the flange 28 collides with other components, thereby reducing the collision of the blade 20 with other components. opportunity.
  • the provision of the flange 28 provides protection to the blade under various abnormal conditions, such as shaft vibration, bearing failure, or inadvertent collision during handling.
  • the diffuser 14 utilizes the difference in cross-sectional area of the flow to convert the velocity of the compressed air into pressure energy.
  • the diffuser 14 is a stationary member that includes an annular seat 32 and a plurality of diffuser vanes 34 disposed on the annular seat 32.
  • the annular seat 32 surrounds the flow passage outlet 26 of the hub 18, and in particular, surrounds the annular flange 28 of the hub 18 and forms a radial spacing with the annular flange 28 to permit rotation of the impeller 12.
  • the radial spacing between the annular seat 32 and the annular flange 28 is set larger, and the larger clearance is designed by other structures to perform the impeller 12 and the pressure expansion. The transition between the devices 14.
  • the flange 28 collides with other elements, such as the diffuser 14, instead of the blade 20 colliding with the diffuser 14.
  • the radial spacing between the annular seat 32 and the annular flange 28 can be reduced, which facilitates improved aerodynamic performance.
  • the gap is reduced, there is no need to perform a transition between the impeller 12 and the diffuser 14 by other structural design.
  • the annular seat 32 has a flat surface 36 on which the diffuser vanes 34 are disposed. Since the hub 18 has an annular flange 28 that projects radially beyond the blade tip, the radially outermost edge 38 of the flange surface of the annular flange 28 can serve as a calibration point for the axial position of the diffuser 14. In the prior art, since the blade extends to the annular edge of the hub, there is no suitable portion on the hub that is suitable for correction, and table correction cannot be performed. The radially outermost edge of the annular flange 28 in this embodiment provides a positioning reference when the diffuser 14 is installed.
  • the wheel cover 16 covers the flow path of the centrifugal impeller 12 and forms an axial gap with the blade 20.
  • the axial clearance should be small enough not to leak, and large enough to ensure that the wheel 20 does not hit the wheel cover 16 when it is rotated. Therefore, a certain degree of installation accuracy must be ensured during installation.
  • the wheel cover 16 is directly pushed into contact with the diffuser vanes 34 during installation, i.e., a precise axial gap between the wheel guard 16 and the vanes is ensured.
  • the diffuser 14 utilizes the edge of the annular flange as a calibration point, thus ensuring precise positioning of the diffuser 14.
  • the apex of the diffuser vane is used as a reference point, which also ensures the installation accuracy of the wheel cover.
  • the present invention provides a centrifugal compressor and an impeller thereof that can provide protection to the blade.
  • the hub of the impeller is provided at the runner outlet with an annular flange that projects radially beyond the tip of the blade. Even in exceptional situations, it is most likely that the flange collides with other components, rather than the blade colliding with other components. The presence of the annular flange thus provides protection to the blade.
  • the radial spacing between the diffuser and the impeller can be reduced, which facilitates improved aerodynamic performance. After the gap is reduced, there is no need to pass other structural designs to make the transition between the impeller and the diffuser.
  • the radially outermost edge of the annular flange can be used as a mounting calibration point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un compresseur centrifuge (10) comprenant un rouet centrifuge (12) et un détendeur de pression (14). Le rouet centrifuge (12) comprend un moyeu (18) apte à tourner autour d'un axe et comprend une pluralité d'aubes (20). Le moyeu (18) comprend une surface de passage d'écoulement en forme d'arc (22). La pluralité d'aubes (20) est disposée sur la surface de passage d'écoulement en forme d'arc (22). Chaque aube (20) s'étend depuis une entrée de passage d'écoulement (24) du moyeu (18) vers une sortie de passage d'écoulement (26) du moyeu (18). Le détendeur de pression (14) entoure la sortie de passage d'écoulement (26) du moyeu (18). Une bride annulaire (28) est disposée sur la sortie de passage d'écoulement (26) du moyeu (18). La bride annulaire (28) fait saillie en dehors des pointes des aubes (20) dans la direction radiale et comporte une surface de bride (30) en liaison souple avec la surface de passage d'écoulement (22). Le détendeur de pression (14) comporte une surface plate (36) perpendiculaire à l'axe. La surface plate (36) est à fleur avec un côté le plus à l'extérieur radial (38) sur la surface de bride (30). Le compresseur centrifuge peut protéger les aubes et simplifier le montage et le positionnement.
PCT/CN2015/087712 2015-08-20 2015-08-20 Compresseur centrifuge et son rouet WO2017028319A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/087712 WO2017028319A1 (fr) 2015-08-20 2015-08-20 Compresseur centrifuge et son rouet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/087712 WO2017028319A1 (fr) 2015-08-20 2015-08-20 Compresseur centrifuge et son rouet

Publications (1)

Publication Number Publication Date
WO2017028319A1 true WO2017028319A1 (fr) 2017-02-23

Family

ID=58051015

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/087712 WO2017028319A1 (fr) 2015-08-20 2015-08-20 Compresseur centrifuge et son rouet

Country Status (1)

Country Link
WO (1) WO2017028319A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1188110A (fr) * 1957-12-04 1959-09-18 Snecma Compresseur centrifuge supersonique
US3771925A (en) * 1970-01-14 1973-11-13 Alsacienes Const Atomiques Tel Supersonic centrifugal compressor
US4006997A (en) * 1972-11-06 1977-02-08 Compagnie Industrielle Des Telecommunications Cit-Alcatel Supersonic centrifugal compressors
US4156581A (en) * 1977-05-06 1979-05-29 Toyota Jidosha Kogyo Kabushiki Kaisha Centrifugal compressor for a gas turbine
JPS57126600A (en) * 1981-01-29 1982-08-06 Nissan Motor Co Ltd Centrifugal compressor impeller
CN101012838A (zh) * 2007-02-02 2007-08-08 清华大学 具有叶片射流口的离心压气机
CN104350286A (zh) * 2012-04-23 2015-02-11 电动内燃机公司 具有包括可变横截面的翼片的压缩机扩散器
JP2015031236A (ja) * 2013-08-06 2015-02-16 株式会社Ihi 遠心圧縮機及び多段圧縮装置
CN104612983A (zh) * 2015-01-29 2015-05-13 湖南天雁机械有限责任公司 单轴串联式两级压气机
CN204828040U (zh) * 2015-08-20 2015-12-02 深圳智慧能源技术有限公司 离心式压气机及其叶轮
CN105156354A (zh) * 2015-08-20 2015-12-16 深圳智慧能源技术有限公司 离心式压气机及其叶轮

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1188110A (fr) * 1957-12-04 1959-09-18 Snecma Compresseur centrifuge supersonique
US3771925A (en) * 1970-01-14 1973-11-13 Alsacienes Const Atomiques Tel Supersonic centrifugal compressor
US4006997A (en) * 1972-11-06 1977-02-08 Compagnie Industrielle Des Telecommunications Cit-Alcatel Supersonic centrifugal compressors
US4156581A (en) * 1977-05-06 1979-05-29 Toyota Jidosha Kogyo Kabushiki Kaisha Centrifugal compressor for a gas turbine
JPS57126600A (en) * 1981-01-29 1982-08-06 Nissan Motor Co Ltd Centrifugal compressor impeller
CN101012838A (zh) * 2007-02-02 2007-08-08 清华大学 具有叶片射流口的离心压气机
CN104350286A (zh) * 2012-04-23 2015-02-11 电动内燃机公司 具有包括可变横截面的翼片的压缩机扩散器
JP2015031236A (ja) * 2013-08-06 2015-02-16 株式会社Ihi 遠心圧縮機及び多段圧縮装置
CN104612983A (zh) * 2015-01-29 2015-05-13 湖南天雁机械有限责任公司 单轴串联式两级压气机
CN204828040U (zh) * 2015-08-20 2015-12-02 深圳智慧能源技术有限公司 离心式压气机及其叶轮
CN105156354A (zh) * 2015-08-20 2015-12-16 深圳智慧能源技术有限公司 离心式压气机及其叶轮

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