CN105386994A - Centrifugal compressor impeller locking structure - Google Patents
Centrifugal compressor impeller locking structure Download PDFInfo
- Publication number
- CN105386994A CN105386994A CN201510946712.7A CN201510946712A CN105386994A CN 105386994 A CN105386994 A CN 105386994A CN 201510946712 A CN201510946712 A CN 201510946712A CN 105386994 A CN105386994 A CN 105386994A
- Authority
- CN
- China
- Prior art keywords
- impeller
- conical surface
- main shaft
- surface lining
- gland
- 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.)
- Pending
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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/266—Rotors specially for elastic fluids mounting compressor rotors on shafts
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of 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
- F04D29/66—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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
-
- 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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a connecting structure of a compressor impeller and a main shaft; the end surface of a step gland adopts a taper shape structure; and the impeller is centered by the fit between a conical surface bushing and the step gland and the fit between the step gland and the main shaft, so that the rotating center of the impeller is consistent with the structural center, the eccentric distance can be reduced, the unbalance quantity is reduced, and the working stability is improved. The structure changes a traditional cylindrical inner hole structure of the conical surface bushing, and changes a traditional plane structure of the step gland, so that the rotating stability of the impeller is enhanced, the vibration amplitude of the impeller is reduced, and the working stability of the impeller is guaranteed. The structure is specifically suitable for an impeller with a diameter greater than 350 mm.
Description
Technical field
The present invention relates to centrifugal-flow compressor impeller and principal shaft locking structure.
Background technique
The structural type of compressor impeller and principal shaft locking determines rotor maintainability.Especially the impeller of more than diameter 350mm, because centrifugal force becomes parabola to increase relation with rotating speed.The small increase of Impeller Mass, when will make rotor high-speed, centrifugal force sharply increases, and impeller Internal Hole Deformation increases, and very easily causes impeller to loosen, and cause vibration to increase, rotor is unstable.Therefore, be usually applicable to the structure of minor diameter impeller and principal shaft locking, inapplicable for major diameter impeller.At present, common impeller and principal shaft locking structure have to be with key lining or to be with necking down lining and principal shaft locking.The former lining and main shaft are Spielpassung, and main shaft stretches out wheel nose, adopt retainer ring by lining and impeller axial compression.This Placement does not consider impeller two ends endoporus concentricity, the instability when running up, and vibration is large.The lining of the latter and main shaft are interference fit, and main shaft is short, and lining stretches out wheel nose, connect fastening by socket head screw at lining bottleneck.This locking mode solves rotor unstable problem.But this Placement does not consider impeller two ends endoporus concentricity equally, also defines the fastening force of screw, simultaneously to impeller shaft to not constraint, easily cause impeller play.Especially for the impeller that diameter is large, risk is larger.
Summary of the invention
The centrifugal-flow compressor impeller locking mechanism that technical problem solved by the invention is to provide a kind of compact structure, bladed disk vibration amplitude reduces, the reliability of work is high.
The technical solution used in the present invention is, centrifugal-flow compressor impeller locking mechanism, comprising: impeller, conical surface lining, step gland, main shaft, conical surface lining to be installed in through hole that impeller puts center and with the through hole interference fit of impeller; Conical surface lining endoporus adopt cone structure and with spindle taper interference fit, conical surface lining and lining gradually become interference fit by Spielpassung from front to back; Conical surface lining front end and step gland adopt step to coordinate, and the external cylindrical surface that described step gland matches with conical surface lining adopts tapered configuration, and the surface of contact that conical surface lining and step gland contact mutually is also tapered configuration; Described front-end of spindle stretches out step gland and axially fastens with step gland.Step gland endoporus coordinates with main shaft, and impeller and main shaft keep coaxial.
Described conical surface lining and step gland adopt the taper fit of diameter 1:30 to 1:50; Described conical surface lining and main shaft adopt the tapering interference fit of diameter 1:50 to 1:150.
The invention has the beneficial effects as follows for the large impeller of diameter, especially take turns footpath and be greater than the impeller of 350mm, it is consistent with structure centre to strengthen vane rotary center, can reduce impeller throw of eccentric, stable working.Change the cylindrical bore structure that conical surface lining is original, change the original plane structure of step gland, thus strengthen vane rotary stability, reduce bladed disk vibration amplitude, ensure the reliability of impeller work.
Accompanying drawing explanation
Fig. 1 is the structural representation that impeller of the present invention is connected with main shaft.
Be labeled as in figure: 1-impeller, 2-conical surface lining, 3-step gland, 4-self-locking nut, 5-step gland is tied, the conical surface of 6-lining, 7-main shaft.
Embodiment
As described in Figure 1, the present invention is applicable to the above impeller of wheel footpath 350mm and is connected with main shaft 7, and structure comprises: impeller 1, main shaft 7, conical surface lining 2, step gland 3, self-locking nut 4.Conical surface lining 2 front end adopts step to coordinate with step gland 3, the main shaft 7 tapering interference fit of conical surface lining 2 endoporus and lengthening.Impeller 1 be placed in conical surface lining 2 outer and with conical surface lining 2 interference fit.
Conical surface lining 2 and main shaft end face axial limit, concrete structure is as follows, front-end of spindle stretches out through step gland 3 central through bore, step gland cylindrical coordinates with conical surface lining 2 simultaneously, step gland endoporus coordinates with main shaft 7, ensure that impeller central is consistent with the alignment of shafts, finally with self-locking nut 4, impeller 1 axial locking is fixed on step gland 3.Step gland 3 and conical surface lining 2 adopt the step clearance of 1:30-1:50 to coordinate; Conical surface lining 2 and main shaft 7 diameter adopt the step interference fit of 1:100 to 1:200.
Step gland 3 external diameter adopts ledge structure to coordinate with conical surface lining 2, step gland endoporus coordinates with main shaft 7, impeller 1 small end relies on the axial aligning of this step gland 3, eliminate conventional impeller small end face free state like this, make impeller small end face consistent with large end face center and the alignment of shafts, can ensure that impeller 1 rotating center is consistent with structure centre, be conducive to the stationarity strengthening wheel rotation; Impeller throw of eccentric can also be reduced, make shaft strength even, extend bearing working life; Meanwhile, contribute to the grade of accuracy that dynamic balance of impeller reaches very high, reduce vibrational energy and noise, be conducive to building good working environment; In addition, step gland 3 profile can be designed to streamlined, guides air current flow, reduces flow losses, improves compressor efficiency; Especially to major diameter impeller not only quality weight own, centrifugal force, axial force are also very large, and the bore concentricity at impeller 1 two ends is larger to stability influence.
Conical surface lining 2 endoporus adopts cone structure 6, changes the straight tube shape inner hole structure that conical surface lining 2 is original; Conical surface lining 2 and step gland 3 taper WEDM, step gland 3 external diameter adopts cone structure, change the original plane structure of step gland 3, and step gland 3 internal diameter adopts cylindrical surface structure; Thus prevent impeller 1 eccentric, strengthen impeller 1 rotational stabilization, reduce bladed disk vibration amplitude, ensure the reliability of impeller work.
Mode of execution one:
Impeller 1 diameter is 375mm, step gland 3 small end conicity external diameter 36mm, and step gland 3 coordinates with the taper transitions of conical surface lining 2 diameter 1:30, and conical surface lining 2 and main shaft 7 diameter adopt the tapering interference fit of 1:100.The self-locking nut 4 of M18 is adopted to lock main shaft 7, by operation test steady running within rotor test rotating speed 28500r/min, within vibration amplitude 0.01mm.
Claims (2)
1. centrifugal-flow compressor impeller locking mechanism, comprise: impeller (1), conical surface lining (2), step gland (3), main shaft (7), is characterized in that: in the through hole that conical surface lining is installed on impeller central and with the through hole interference fit of impeller; Conical surface lining (2) endoporus adopt cone structure and with main shaft (7) tapering interference fit, conical surface lining (2) and lining gradually become interference fit by Spielpassung from front to back; Conical surface lining (2) front end and step gland adopt step to coordinate, the external cylindrical surface that described step gland (3) is matched with conical surface lining (2) adopts tapered configuration, and the surface of contact that conical surface lining (2) and step gland (3) contact mutually is also tapered configuration; Described main shaft (7) front end is stretched out step gland (3) and is axially fastened with step gland (3).Step gland endoporus coordinates with main shaft, and impeller (1) keeps coaxial with main shaft (7).
2. centrifugal-flow compressor impeller locking mechanism according to claim 1, is characterized in that: described conical surface lining (2) and step gland (3) adopt the taper fit of diameter 1:30 to 1:50; Described conical surface lining (2) and main shaft (7) adopt the tapering interference fit of diameter 1:50 to 1:150.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510946712.7A CN105386994A (en) | 2015-12-16 | 2015-12-16 | Centrifugal compressor impeller locking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510946712.7A CN105386994A (en) | 2015-12-16 | 2015-12-16 | Centrifugal compressor impeller locking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105386994A true CN105386994A (en) | 2016-03-09 |
Family
ID=55419628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510946712.7A Pending CN105386994A (en) | 2015-12-16 | 2015-12-16 | Centrifugal compressor impeller locking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105386994A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882742A (en) * | 2017-12-13 | 2018-04-06 | 山东昊安金科新材料股份有限公司 | Hydraulic motor immersible pump |
| CN108571473A (en) * | 2017-03-10 | 2018-09-25 | 株式会社东芝 | Bushing, rotary machine and conditioner |
| CN109139536A (en) * | 2018-08-29 | 2019-01-04 | 珠海格力电器股份有限公司 | Fan blade shaft, assembly structure of fan blade shaft and fan blade and shaft sleeve |
| CN110587475A (en) * | 2019-09-11 | 2019-12-20 | 安阳睿恒数控机床股份有限公司 | Installation axle of impeller |
| CN111734496A (en) * | 2020-07-02 | 2020-10-02 | 中国航发常州兰翔机械有限责任公司 | Centrifugal impeller assembly of aviation turbine starter and assembly method of centrifugal impeller assembly |
| US11560900B2 (en) | 2020-06-09 | 2023-01-24 | Emerson Climate Technologies, Inc. | Compressor driveshaft assembly and compressor including same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183719A (en) * | 1976-05-13 | 1980-01-15 | Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft (MAN) | Composite impeller wheel with improved centering of one component on the other |
| CN2692350Y (en) * | 2004-02-06 | 2005-04-13 | 中国北车集团大连机车研究所 | Improvement of Dongfeng series internal combustion engine pressurizing unit air compressor working wheel structure |
| CN103161754A (en) * | 2011-12-15 | 2013-06-19 | 重庆江增船舶重工有限公司 | Impeller structure and assembling method thereof |
| CN103321940A (en) * | 2013-06-19 | 2013-09-25 | 江阴市精亚风机有限公司 | Balance shaft with taper sleeve and for balance fan impeller |
| CN103470536A (en) * | 2013-09-29 | 2013-12-25 | 中国北车集团大连机车研究所有限公司 | Connecting structure between centrifugal compressor impeller and spindle |
| CN104251228A (en) * | 2013-06-27 | 2014-12-31 | 上海连成（集团）有限公司 | Impeller positioning structure |
-
2015
- 2015-12-16 CN CN201510946712.7A patent/CN105386994A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4183719A (en) * | 1976-05-13 | 1980-01-15 | Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft (MAN) | Composite impeller wheel with improved centering of one component on the other |
| CN2692350Y (en) * | 2004-02-06 | 2005-04-13 | 中国北车集团大连机车研究所 | Improvement of Dongfeng series internal combustion engine pressurizing unit air compressor working wheel structure |
| CN103161754A (en) * | 2011-12-15 | 2013-06-19 | 重庆江增船舶重工有限公司 | Impeller structure and assembling method thereof |
| CN103321940A (en) * | 2013-06-19 | 2013-09-25 | 江阴市精亚风机有限公司 | Balance shaft with taper sleeve and for balance fan impeller |
| CN104251228A (en) * | 2013-06-27 | 2014-12-31 | 上海连成（集团）有限公司 | Impeller positioning structure |
| CN103470536A (en) * | 2013-09-29 | 2013-12-25 | 中国北车集团大连机车研究所有限公司 | Connecting structure between centrifugal compressor impeller and spindle |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571473A (en) * | 2017-03-10 | 2018-09-25 | 株式会社东芝 | Bushing, rotary machine and conditioner |
| CN107882742A (en) * | 2017-12-13 | 2018-04-06 | 山东昊安金科新材料股份有限公司 | Hydraulic motor immersible pump |
| CN109139536A (en) * | 2018-08-29 | 2019-01-04 | 珠海格力电器股份有限公司 | Fan blade shaft, assembly structure of fan blade shaft and fan blade and shaft sleeve |
| WO2020042440A1 (en) * | 2018-08-29 | 2020-03-05 | 珠海格力电器股份有限公司 | Fan blade shaft, assembly structure thereof with fan blades, and shaft sleeve |
| CN109139536B (en) * | 2018-08-29 | 2020-06-19 | 珠海格力电器股份有限公司 | Assembly structure of fan blade shaft and fan blade |
| JP2021527773A (en) * | 2018-08-29 | 2021-10-14 | 珠海格力電器股▲ふん▼有限公司Ｇｒｅｅ Ｅｌｅｃｔｒｉｃ Ａｐｐｌｉａｎｃｅｓ， Ｉｎｃ． ｏｆ Ｚｈｕｈａｉ | Fan blade shaft and its assembly structure of fan blade, and bearing sleeve |
| JP7069357B2 (en) | 2018-08-29 | 2022-05-17 | 珠海格力電器股▲ふん▼有限公司 | Fan blade shaft and its assembly structure of fan blade, and bearing sleeve |
| CN110587475A (en) * | 2019-09-11 | 2019-12-20 | 安阳睿恒数控机床股份有限公司 | Installation axle of impeller |
| US11560900B2 (en) | 2020-06-09 | 2023-01-24 | Emerson Climate Technologies, Inc. | Compressor driveshaft assembly and compressor including same |
| CN111734496A (en) * | 2020-07-02 | 2020-10-02 | 中国航发常州兰翔机械有限责任公司 | Centrifugal impeller assembly of aviation turbine starter and assembly method of centrifugal impeller assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105386994A (en) | Centrifugal compressor impeller locking structure | |
| CN201747671U (en) | Impeller and shaft connection structure of turbine compressor | |
| CN204041531U (en) | The connecting structure of centrifugal compressor high speed gear shaft and impeller | |
| CN103410774B (en) | Split type air guide impeller assembly of centrifugal compressor | |
| CN201000386Y (en) | Dynamic balance device of axle coupler | |
| CN109663934B (en) | Spindle tail hole center device and method capable of expanding clamping length of lathe | |
| CN107906045A (en) | A kind of monopole centrifugal blower rotor | |
| CN112378580A (en) | Multifunctional rotor dynamic balance tool | |
| CN206169324U (en) | Utensil is assisted in processing of turning slender axles | |
| CN204061346U (en) | A kind of blower fan that can realize rotor counterweight balance | |
| CN215634703U (en) | External vibration-damping deviation-correcting system | |
| CN210461074U (en) | Take condensate pump of inducer to flow through parts structure | |
| CN214118579U (en) | Single-stage cantilever centrifugal compressor impeller main shaft connecting structure | |
| CN104141771A (en) | Expanding tool for flange between speed reducer and transmission shaft | |
| CN105952679B (en) | Combined core-axle and its mandrel, end-toothed disc and locking nut | |
| CN209228693U (en) | A kind of fastening structure of turbocompressor impeller and axis | |
| CN109404050B (en) | Structure for reducing stress concentration of central hole of impeller part | |
| CN104405683A (en) | Centrifugal-flow compressor rotor structure | |
| CN204402975U (en) | Centrifugal-flow compressor rotor structure | |
| CN207358301U (en) | A kind of skiving lathe cutter saddle structure | |
| CN207598576U (en) | A kind of monopole centrifugal blower rotor | |
| CN104863894A (en) | Gas compressor wheel disk and rotor | |
| CN214331247U (en) | Concentric spindle structure | |
| CN206320072U (en) | A kind of centrifugal pump impeller location structure | |
| CN205184287U (en) | Centre frame is supported in rotatory target parent tube processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160309 |