CN202266509U - Diffuser capable of adjusting width of flow channel for centrifugal compressor - Google Patents
Diffuser capable of adjusting width of flow channel for centrifugal compressor Download PDFInfo
- Publication number
- CN202266509U CN202266509U CN2011202981348U CN201120298134U CN202266509U CN 202266509 U CN202266509 U CN 202266509U CN 2011202981348 U CN2011202981348 U CN 2011202981348U CN 201120298134 U CN201120298134 U CN 201120298134U CN 202266509 U CN202266509 U CN 202266509U
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- diffuser
- driving ring
- slide block
- block driving
- slider
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Abstract
The utility model relates to a diffuser capable of adjusting width of a flow channel for a centrifugal compressor, which comprises a compressor casing, a diffuser base body connected with the compressor casing and an impeller cover. A hole is arranged in the middle inside the diffuser base body, and the diffuser further comprises an annular slider, a slider driving ring, a connecting rod mechanism and a stepping motor. The diffuser base body, the annular slider and the slider driving ring are all arranged in the impeller cover. The lateral face of the diffuser base body is provided with a connecting hole, a groove is arranged in the diffuser base body, and a needle roller bearing is arranged on the inner wall of the slider driving ring. The stepping motor drives the slider driving ring to rotate through the connecting rod mechanism and the connecting hole, and the slider driving ring drives the annular slider to move along the axial direction through the needle roller bearing and a slide groove so as to achieve the adjustment of the width of the compressor flow channel. Therefore, the width of a fluid channel between the annular slider and the compressor casing can be changed along with the change of a rotation angle of the stepping motor, and the purpose of adjustment of the width of the compressor flow channel as required can be achieved finally.
Description
Technical field
The utility model relates to a kind of centrifugal compressor diffuser that is used for large-scale chiller plant, relates in particular to a kind of centrifugal compressor runner width-adjusting Diffuser.
Background technique
Diffuser is one of main Pneumatic component of idle call centrifugal compressor; Can be divided into two kinds of vaneless diffuser and vaned diffusers on the structure, though vaned diffuser at the steady air flow state, improve and relatively have superiority its blade-section aspect the inner stress equalization property of impeller; The contour accuracy requirement is high, technological process is complicated; Generally need manufacturing in the professional numerical control machining center more than three, and vaneless diffuser is not owing to there being the complicated blade of profile, so on cost, relatively have superiority.Therefore vaneless diffuser still has application more widely in actual production.
Traditional vaneless diffuser and traditional vaned diffuser all are stationary structures; Therefore there is a common defective in they, and that is exactly that the diffuser Design of stationary structure is all deposited a maximum efficiency point, just design conditions point; Unit only when design conditions point moves efficient just the highest; And when the actual operating mode off-design operating mode of unit, Diffuser can not be adjusted according to the actual conditions demand, so the efficiency value of unit will reduce.And in actual life, the operating mode of unit is often with environment and load and dynamic change so comprehensively the Diffuser high performance operation interval of stationary structure is narrower, can not obtain higher overall efficiency value in practical application.For the intrinsic surging characteristic of centrifugal compressor, fixed Diffuser also can't improve the low-load anti-surge ability of compressor through the regulated fluid circulation area in addition.So the centrifugal compression of current a lot of main flow producer has all carried out the exploitation of can regulate Diffuser.
The various informative of the actuator of adjustable shutter Diffuser differs; But most structures are more complicated all; Difficulty of processing is also bigger, thus cost than higher, the general all compact and many places of the topology layout of centrifugal compressor itself are in airtight fully space in addition; Maintenance is inconvenience very, and more complicated mechanism reliability is just low more.So that uses in the actual production is still fewer, by contrast, it is improved on the vaneless diffuser basis, simple and compact for structure, with low cost that width of flow path can be debugged Diffuser, has higher utility.
The model utility content
The technique effect of the utility model can overcome above-mentioned defective; A kind of centrifugal compressor runner width-adjusting Diffuser is provided; Its width of flow path can change according to the different load of unit to be adjusted; Satisfying the demand of various off-design behaviours, the effect that also has some improvement of the surge problem when this design is for the unit low-load in addition.
For realizing above-mentioned purpose; The utility model adopts following technological scheme: Diffuser matrix, impeller chimney that it comprises compressor housing and is connected with compressor housing; The perforate of Diffuser matrix bosom; Also comprise ring slider, slide block driving ring, linkage mechanism, stepper motor, Diffuser matrix, ring slider, slide block driving ring all place in the impeller chimney; Diffuser matrix side is provided with attachment hole; Be provided with groove in the Diffuser matrix; The slide block driving ring is arranged in the groove, and it is inboard that ring slider is arranged on the slide block driving ring, and the inwall of slide block driving ring is provided with needle bearing; The outside of ring slider is provided with the chute of inclination vertically, and needle bearing places in the chute; Stepper motor sees through attachment hole through linkage mechanism and drives the rotation of slide block driving ring, moves the adjusting that realizes the compressor runner width vertically thereby the slide block driving ring drives ring slider through needle bearing, chute.
Entire mechanism is driven by the stepper motor that off-centre is installed on the compressor housing, and stepper motor is fixed on the compressor housing through support, and the mode that the Diffuser matrix is threaded is fixed on the compressor housing.
The perforate that sees through on the Diffuser matrix outer wall links to each other with stepper motor through linkage mechanism, and the slide block driving ring can rotate freely, because there is the restriction of impeller chimney in the outside, it cannot move axially along compressor.Slide block driving ring installed inside ring slider has evenly been fixed three needle bearings by hexagonal angle on the inwall of slide block driving ring, has evenly offered the skewed slot at 15 ° of tilt angle of three place's bands on the ring slider outer wall by hexagonal angle; Three needle bearings are embedded in respectively in three place's skewed slots; Simultaneously, on ring slider, also offer three spacing holes, these three spacing holes respectively be fixed on impeller chimney on three place's sliding pins cooperate; So ring slider can only be along the moving axially of sliding pin, and can not rotate.The internal diameter of this outer slide driving ring is identical with the internal diameter of Diffuser matrix perforate, and the external diameter of ring slider is slightly less than the internal diameter of Diffuser matrix perforate, so not moving axially of ring slider can be restricted.
When stepper motor receives that control signal rotates; Its motion at first passes to the slide block driving ring through linkage mechanism; Be converted into the rotation of slide block driving ring; Because the ring slider that cooperates with it can only move axially and can not rotate, moving axially of slide block driving ring itself is limited simultaneously, so finally the effect of the rotation of slide block driving ring through three place's skewed slots on needle bearing and the slide block just become moving axially of ring slider; The width of the fluid passage between ring slider and the compressor housing will change with the rotation angle of stepper motor like this, finally just can realize regulating as required the purpose of compressor runner width.
Description of drawings
Fig. 1 is the overall structure figure of the adjustable Diffuser of width of flow path;
Fig. 2 is the partial sectional view of the centrifugal compressor of application runner width-adjusting Diffuser;
Fig. 3 is the topology layout figure of the centrifugal compressor of application runner width-adjusting Diffuser;
Fig. 4 is a slide block driving ring structural drawing;
Fig. 5 is the ring slider structural drawing.
Among the figure: 1. compressor housing; 2. Diffuser matrix; 3. slide block driving ring; 4. ring slider; 5. impeller; 6. impeller chimney; 7. sliding pin; 8. needle bearing; 9. impeller shaft; 10. stepper motor; 11. linkage mechanism; 12. attachment hole; 13. chute; 14. spacing hole.
Embodiment
The centrifugal compressor runner width-adjusting Diffuser of the utility model; Comprise compressor housing 1 and the Diffuser matrix 2 that is connected with compressor housing 1, impeller chimney 6; The 2 bosom perforates of Diffuser matrix; It is characterized in that also comprise ring slider 4, slide block driving ring 3, linkage mechanism 11, stepper motor 10, Diffuser matrix 2, ring slider 4, slide block driving ring 3 all place in the impeller chimney 6; Diffuser matrix 2 sides are provided with attachment hole 12; Be provided with groove in the Diffuser matrix 2; Slide block driving ring 3 is arranged in the groove, and ring slider 4 is arranged on slide block driving ring 3 inboards, and the inwall of slide block driving ring 3 is provided with needle bearing 8; The outside of ring slider 4 is provided with the chute 13 of inclination vertically, and needle bearing 8 places in the chute 13; Stepper motor 10 sees through attachment hole 12 through linkage mechanism 11 and drives 3 rotations of slide block driving ring, moves the adjusting that realizes the compressor runner width vertically thereby slide block driving ring 3 drives ring slider 4 through needle bearing 8, chute 13.
Connect impeller 5 on the impeller shaft 9, impeller 5 is arranged on the position intermediate of equipment.
The installed inside ring slider 4 of slide block driving ring 3, the internal diameter of slide block driving ring 3 is identical with the internal diameter of Diffuser matrix 2 perforates, and the external diameter of ring slider 4 is slightly less than the internal diameter of Diffuser matrix 2 perforates.On ring slider 4, be provided with three place's positioning pin holes, this three places pin-and-hole cooperates with three place's sliding pins 7 on being fixed on impeller chimney 6, and the circumferencial direction of accomplishing ring slider is spacing.
Three needle bearings 8 on the inwall of slide block driving ring 3, have evenly been settled; These 3 needle bearings are connected in the groove at the 15 ° of oblique angles, three places that are opened on ring slider 4 outer walls; Ring slider 4 can not rotate and can only move axially because slide block driving ring 3 can not move axially simultaneously with rotation only, so ring slider 4 just can be done axial moving when stepper motor 10 drives 3 rotations of slide block driving rings through linkage mechanism 11.
Summarizing the pass order of power on sleeve mechanism is:
Claims (6)
1. centrifugal compressor runner width-adjusting Diffuser; Comprise compressor housing (1) and the Diffuser matrix (2) that is connected with compressor housing (1), impeller chimney (6); Diffuser matrix (2) bosom perforate; It is characterized in that also comprise ring slider (4), slide block driving ring (3), linkage mechanism (11), stepper motor (10), Diffuser matrix (2), ring slider (4), slide block driving ring (3) all place in the impeller chimney (6); Diffuser matrix (2) side is provided with attachment hole (12); The Diffuser matrix is provided with groove in (2); Slide block driving ring (3) is arranged in the groove, and ring slider (4) is arranged on slide block driving ring (3) inboard, and the inwall of slide block driving ring (3) is provided with needle bearing (8); The outside of ring slider (4) is provided with the chute (13) of inclination vertically, and needle bearing (8) places in the chute (13); Stepper motor (10) sees through attachment hole (12) through linkage mechanism (11) and drives slide block driving ring (3) rotation, and slide block driving ring (3) drives ring slider (4) through needle bearing (8), chute (13) thereby moves the adjusting that realizes the compressor runner width vertically.
2. centrifugal compressor runner width-adjusting Diffuser according to claim 1 is characterized in that needle bearing (8) is provided with three, and it evenly is provided with the inwall of slide block driving ring (3) at interval.
3. centrifugal compressor runner width-adjusting Diffuser according to claim 2 is characterized in that chute (13) is provided with three.
4. centrifugal compressor runner width-adjusting Diffuser according to claim 3 is characterized in that the angle of inclination of chute is 15 °.
5. according to claim 1 or 4 described centrifugal compressor runner width-adjusting Diffusers, it is characterized in that ring slider (4) is provided with spacing hole (14), spacing hole (14) cooperates with sliding pin (7) on being arranged on impeller chimney (6).
6. centrifugal compressor runner width-adjusting Diffuser according to claim 1 is characterized in that, the internal diameter of slide block driving ring (3) equates that with the perforate internal diameter of Diffuser matrix (2) external diameter of ring slider (4) is less than the perforate internal diameter of Diffuser matrix (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202981348U CN202266509U (en) | 2011-08-16 | 2011-08-16 | Diffuser capable of adjusting width of flow channel for centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202981348U CN202266509U (en) | 2011-08-16 | 2011-08-16 | Diffuser capable of adjusting width of flow channel for centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266509U true CN202266509U (en) | 2012-06-06 |
Family
ID=46157307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202981348U Expired - Lifetime CN202266509U (en) | 2011-08-16 | 2011-08-16 | Diffuser capable of adjusting width of flow channel for centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266509U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131999A (en) * | 2014-07-23 | 2014-11-05 | 珠海格力电器股份有限公司 | Centrifugal compressor's regulation structure and centrifugal compressor |
| WO2017063575A1 (en) * | 2015-10-15 | 2017-04-20 | 珠海格力电器股份有限公司 | Driving apparatus and compressor |
| CN107975498A (en) * | 2016-10-24 | 2018-05-01 | 开利公司 | For centrifugal compressor diffuser and there is its centrifugal compressor |
| KR20190001124A (en) * | 2017-06-26 | 2019-01-04 | 엘지전자 주식회사 | Compressor and Chiller system including the same |
| CN112780580A (en) * | 2019-11-05 | 2021-05-11 | 财团法人工业技术研究院 | Centrifugal compressor |
| CN115076141A (en) * | 2022-07-22 | 2022-09-20 | 山东天瑞重工有限公司 | Flow regulating device and centrifugal compressor |
-
2011
- 2011-08-16 CN CN2011202981348U patent/CN202266509U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131999A (en) * | 2014-07-23 | 2014-11-05 | 珠海格力电器股份有限公司 | Centrifugal compressor's regulation structure and centrifugal compressor |
| WO2016011777A1 (en) * | 2014-07-23 | 2016-01-28 | 珠海格力电器股份有限公司 | Centrifugal compressor adjustment structure and centrifugal compressor |
| WO2017063575A1 (en) * | 2015-10-15 | 2017-04-20 | 珠海格力电器股份有限公司 | Driving apparatus and compressor |
| CN107975498A (en) * | 2016-10-24 | 2018-05-01 | 开利公司 | For centrifugal compressor diffuser and there is its centrifugal compressor |
| US10823198B2 (en) | 2016-10-24 | 2020-11-03 | Carrier Corporation | Diffuser for a centrifugal compressor and centrifugal compressor having the same |
| CN107975498B (en) * | 2016-10-24 | 2021-08-31 | 开利公司 | Diffuser for centrifugal compressor and centrifugal compressor with diffuser |
| KR20190001124A (en) * | 2017-06-26 | 2019-01-04 | 엘지전자 주식회사 | Compressor and Chiller system including the same |
| KR102267751B1 (en) | 2017-06-26 | 2021-06-23 | 엘지전자 주식회사 | Compressor and Chiller system including the same |
| CN112780580A (en) * | 2019-11-05 | 2021-05-11 | 财团法人工业技术研究院 | Centrifugal compressor |
| CN115076141A (en) * | 2022-07-22 | 2022-09-20 | 山东天瑞重工有限公司 | Flow regulating device and centrifugal compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |
|
| CX01 | Expiry of patent term |