CN102817869A - Large-scale centrifugal compressor impeller and machining forming method thereof - Google Patents
Large-scale centrifugal compressor impeller and machining forming method thereof Download PDFInfo
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- CN102817869A CN102817869A CN2012102869991A CN201210286999A CN102817869A CN 102817869 A CN102817869 A CN 102817869A CN 2012102869991 A CN2012102869991 A CN 2012102869991A CN 201210286999 A CN201210286999 A CN 201210286999A CN 102817869 A CN102817869 A CN 102817869A
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Abstract
The invention provides a large-scale centrifugal compressor impeller and a machining forming method of the large-scale centrifugal compressor impeller. The large-scale centrifugal compressor impeller comprises an impeller disc side part and an impeller cover side part, wherein the impeller disc side part consists of an impeller disc and an impeller disc side semi-leaf high blade formed by wholly milling, and the impeller cover side part consists of an impeller cover and an impeller cover side semi-leaf high blade formed by wholly milling. The invention has the advantages that the milled blade is higher in precision compared with that of the conventional stamped blade; the welding mode and the welding position can be optimized, the length of a weld joint can be reduced, and the welding deformation quantity and the weld beading polishing treatment can be preferably reduced by adopting a novel welding technology; and the fillet angle of an interface among the blade, the impeller disc and the impeller cover is smoother, so that the aerodynamic performance of the large-scale centrifugal compressor can be preferably improved.
Description
Technical field
The present invention relates to a kind of technological method that can improve large centrifugal Impeller Machining forming accuracy and centrifugal compressor aeroperformance, relate in particular to a kind of large centrifugal compressor impeller and shape method.
Background technique
Centrifugal compressor is the heart equipment of process industrials such as petrochemical industry, metallurgy; The The Enlargement Tendency of centrifugal compressor is obvious day by day in recent years; With the ethylene unit is example, and in the 60-70 age in 20th century, the scale of ethylene unit is below 200kt/a; Then reach 1000-1400kt/a after 2000, the ethylene unit of 2000kt/a scale also will come true the coming years; The development of Large LNG device, large-scale space division device in addition, the process that has all advanced centrifugal compressor to maximize.Because the maximization of centrifugal compressor, the separate unit power of the assembling unit is raised the efficiency to reduce power consumption up to tens thousand of kilowatts, can significantly reduce its operating cost.With megaton cracking of ethylene air compressor is example, and the every raising 1% of unit efficiency can be saved more than the power consumption 500kw, and annual operating and maintenance cost can reduce millions of units.Therefore, compressor is made enterprise and is all being made great efforts to improve compressor efficiency both at home and abroad.
The patent documentation of notification number CN201963596U has disclosed a kind of Centrufugal compressor impeller and has been provided with the centrifugal compressor of this Centrufugal compressor impeller, and wherein, this Centrufugal compressor impeller comprises: wheel disc; First vane group is arranged on a side of wheel disc; And second vane group, being arranged on the opposite side of wheel disc, this Centrufugal compressor impeller is a complete controlled whirlpool 3 d impeller; This Centrufugal compressor impeller also comprises: first wheel cap is welded on the outside of first vane group; And second wheel cap, be welded on the outside of second vane group; This Centrufugal compressor impeller makes the working efficiency of centrifugal compressor be improved.
For improving the pneumatic efficiency of centrifugal compressor, good parts pneumatic design is the basis, and the good technology that shapes is important leverage.The forging forming method is generally all adopted in current large centrifugal compressor impeller processing, and promptly wheel disc and wheel cap are based on forging turning shaping, vanes excellent suitability for press forming, and three-major-items weld together then.This method is because the existence of fillet weld between blade and wheel disc and the wheel cap; Very easily cause welding deformation amount to be difficult to eliminate fully; Overlap is difficult for polishing, adds the relatively poor degree of finish of pressing mold blade surface, has increased the aerodynamic surface roughness; Make formed product depart from the requirement of centrifugal compressor pneumatic design, reduce pneumatic efficiency.Therefore, how eliminating welding deformation amount as much as possible and improve the machining accuracy of aerodynamic surface, is to guarantee high-performance pneumatic design result, the important channel of improving large centrifugal compressor pneumatic efficiency.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can improve the large centrifugal compressor impeller that shapes precision and centrifugal compressor aeroperformance and shape method.
Large centrifugal compressor impeller of the present invention is a kind of centrifugal impeller; Comprise wheel disc side component and wheel cap side component; Said wheel disc side component mills wheel disc and the high blade of wheel disc side half leaf of processing shape by integral body and constitutes, and the wheel cap side component mills wheel cap and the high blade of wheel cap side half leaf of processing shape by integral body and constitutes.
Be preferably, wheel disc side component and wheel cap side component are welded as a whole in half leaf eminence of blade separately.
Be preferably, said large centrifugal compressor impeller is that the milled blade through making the wheel disc side component is welded with docking at blade middle part separately with the milled blade of wheel cap side component.
The present invention is a kind of method that shapes of above-mentioned large centrifugal compressor impeller; Comprise five of the integral body of wheel disc side component in the said impeller and wheel cap side component are milled system processing; Be configured as wheel disc with the high blade of wheel disc side half leaf constitutes the wheel disc side component through whole five systems of milling, mill to make through whole five and be configured as wheel cap and the high blade of wheel cap side half leaf constitutes the wheel cap side component.
According to the technological scheme that the invention described above provides, centrifugal compressor according to the invention has adopted to make milled blade mutual butt-welded mode in the middle part of blade with the forming process of impeller, and milled blade is higher than the precision of conventional die blade; Optimize welding manner and position while welding, reduced fusion length, very easily eliminated the influence and the polishing overlap of welding deformation amount, guaranteed excellent pneumatic runner profile; The more fairing of fillet of blade and wheel disc wheel cap interface helps promoting the aeroperformance of large centrifugal compressor.
Description of drawings
Fig. 1 is the schematic representation of the wheel disc side component structure of the said type centrifugal compressor of one embodiment of the invention centrifugal impeller.
Fig. 2 is the schematic representation of the wheel cap side component structure of the said type centrifugal compressor of one embodiment of the invention centrifugal impeller.
Fig. 3 is that the said type centrifugal compressor of one embodiment of the invention is with the assembling of centrifugal impeller and the schematic representation of welding position.
Among the figure: 1-wheel disc side component, 2-wheel cap side component, 3-centrifugal impeller, S-weld seam.
Embodiment
Below, in conjunction with accompanying drawing 1-3, use centrifugal impeller embodiment of the present invention to be described as example with certain large centrifugal compressor.
The said large centrifugal compressor impeller of one embodiment of the present of invention is a centrifugal impeller 3 shown in Figure 3, and centrifugal impeller 3 is welded in half leaf eminence by wheel disc side component 1 and wheel cap side component 2.Shown in Fig. 1-2, wheel disc side component 1 mills wheel disc and the high blade of wheel disc side half leaf of processing shape by whole five and constitutes, and wheel cap side component 2 mills wheel cap and the high blade of wheel cap side half leaf of processing shape by whole five and constitutes.
As shown in Figure 3; The forming process of the described large centrifugal compressor of present embodiment centrifugal impeller has adopted to make and has milled the blade of processing shape separately in the butt-welded mode in blade middle part separately; Promptly; Said centrifugal impeller 3 is that the milled blade through making wheel disc side component 1 is welded with docking at the middle part of blade separately with the milled blade of wheel cap side component 2; Thus, wheel disc side component 1 and wheel cap side component 2 are welded as a whole in half leaf eminence of blade separately, label S representes weld seam between the two among the figure.
In view of the above, reduce weld seam S length, improved the accuracy of manufacturing of said impeller 3; Be beneficial to the optimization welding procedure; Very easily eliminate the influence and the polishing overlap of welding deformation amount, guarantee excellent pneumatic runner profile, help promoting the aeroperformance of large centrifugal compressor product.
The present invention is not limited to above-mentioned mode of execution, and under the situation that does not deviate from flesh and blood of the present invention, any distortion that those skilled in the art can expect, improvement, replacement all fall in the scope of the present invention.
Claims (4)
1. large centrifugal compressor impeller; It is characterized in that; Comprise wheel disc side component and wheel cap side component, said wheel disc side component mills wheel disc and the high blade of wheel disc side half leaf of processing shape by integral body and constitutes, and said wheel cap side component mills wheel cap and the high blade of wheel cap side half leaf of processing shape by integral body and constitutes.
2. large centrifugal compressor impeller according to claim 1 is characterized in that, said wheel disc side component and said wheel cap side component are welded as a whole in half leaf eminence of blade separately.
3. large centrifugal compressor impeller according to claim 2; It is characterized in that said large centrifugal compressor impeller is that the milled blade of milled blade and said wheel cap side component through making said wheel disc side component docks at blade middle part separately and is welded.
4. the method that shapes of each described large centrifugal compressor impeller in the claim 1 to 3; Comprise five of the integral body of wheel disc side component and wheel cap side component are milled system processing; Be configured as wheel disc with the high blade of wheel disc side half leaf constitutes the wheel disc side component through whole five systems of milling, mill to make through whole five and be configured as wheel cap and the high blade of wheel cap side half leaf constitutes the wheel cap side component.
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| CN2012102869991A CN102817869A (en) | 2012-08-13 | 2012-08-13 | Large-scale centrifugal compressor impeller and machining forming method thereof |
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| CN2012102869991A CN102817869A (en) | 2012-08-13 | 2012-08-13 | Large-scale centrifugal compressor impeller and machining forming method thereof |
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| CN102817869A true CN102817869A (en) | 2012-12-12 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394880A (en) * | 2013-08-15 | 2013-11-20 | 沈阳三科水力机械制造有限公司 | Large-sized circulating pump impeller forming method through swing welding |
| CN104279186A (en) * | 2014-09-17 | 2015-01-14 | 杭州杭氧透平机械有限公司 | High-flow-rate ultra-large-diameter semi-milling and semi-welding closed ternary impeller and manufacturing method |
| CN104275516A (en) * | 2013-07-11 | 2015-01-14 | 发那科株式会社 | Impeller and method of machining same |
| CN108581365A (en) * | 2018-06-26 | 2018-09-28 | 沈阳透平机械股份有限公司 | A kind of processing method of enclosed ternary slot welding impeller |
| CN110439853A (en) * | 2019-06-26 | 2019-11-12 | 上海电气鼓风机厂有限公司 | The design method of whole milling centrifugal compressor double shrouded wheel |
| CN110576376A (en) * | 2019-09-16 | 2019-12-17 | 孙庆峰 | Water pump impeller surface finishing treatment method |
| CN112247492A (en) * | 2020-10-26 | 2021-01-22 | 航天科工哈尔滨风华有限公司 | Method for connecting impeller cover of closed impeller and impeller |
| JP2021177075A (en) * | 2020-05-08 | 2021-11-11 | ダイキン工業株式会社 | Closed impeller and manufacturing method for closed impeller |
| WO2022111396A1 (en) * | 2020-11-24 | 2022-06-02 | 青岛海尔智能技术研发有限公司 | Closed impeller and centrifugal compressor having same |
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| JPH07109997A (en) * | 1993-10-14 | 1995-04-25 | Mitsubishi Heavy Ind Ltd | Impeller for fluid machinery and its manufacture |
| US5964398A (en) * | 1993-03-18 | 1999-10-12 | Hitachi, Ltd. | Vane member and method for producing joint |
| JP2005146962A (en) * | 2003-11-14 | 2005-06-09 | Hitachi Industries Co Ltd | Centrifugal impeller and its manufacturing method |
| CN202756297U (en) * | 2012-08-13 | 2013-02-27 | 势加透博（北京）科技有限公司 | Novel high precision machining forming impeller for large centrifugal compressor |
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2012
- 2012-08-13 CN CN2012102869991A patent/CN102817869A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5964398A (en) * | 1993-03-18 | 1999-10-12 | Hitachi, Ltd. | Vane member and method for producing joint |
| JPH07109997A (en) * | 1993-10-14 | 1995-04-25 | Mitsubishi Heavy Ind Ltd | Impeller for fluid machinery and its manufacture |
| JP2005146962A (en) * | 2003-11-14 | 2005-06-09 | Hitachi Industries Co Ltd | Centrifugal impeller and its manufacturing method |
| CN202756297U (en) * | 2012-08-13 | 2013-02-27 | 势加透博（北京）科技有限公司 | Novel high precision machining forming impeller for large centrifugal compressor |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275516A (en) * | 2013-07-11 | 2015-01-14 | 发那科株式会社 | Impeller and method of machining same |
| CN104275516B (en) * | 2013-07-11 | 2018-08-24 | 发那科株式会社 | The processing method of impeller and the impeller |
| CN103394880A (en) * | 2013-08-15 | 2013-11-20 | 沈阳三科水力机械制造有限公司 | Large-sized circulating pump impeller forming method through swing welding |
| CN103394880B (en) * | 2013-08-15 | 2015-12-09 | 沈阳三科水力机械制造有限公司 | Large-scale circulating pump impeller pendulum weldering forming method |
| CN104279186A (en) * | 2014-09-17 | 2015-01-14 | 杭州杭氧透平机械有限公司 | High-flow-rate ultra-large-diameter semi-milling and semi-welding closed ternary impeller and manufacturing method |
| CN108581365A (en) * | 2018-06-26 | 2018-09-28 | 沈阳透平机械股份有限公司 | A kind of processing method of enclosed ternary slot welding impeller |
| CN110439853B (en) * | 2019-06-26 | 2020-12-18 | 上海电气鼓风机厂有限公司 | Design method for integrally milling closed impeller of centrifugal compressor |
| CN110439853A (en) * | 2019-06-26 | 2019-11-12 | 上海电气鼓风机厂有限公司 | The design method of whole milling centrifugal compressor double shrouded wheel |
| CN110576376A (en) * | 2019-09-16 | 2019-12-17 | 孙庆峰 | Water pump impeller surface finishing treatment method |
| CN110576376B (en) * | 2019-09-16 | 2021-06-22 | 济宁安泰矿山设备制造有限公司 | Water pump impeller surface finishing treatment method |
| JP2021177075A (en) * | 2020-05-08 | 2021-11-11 | ダイキン工業株式会社 | Closed impeller and manufacturing method for closed impeller |
| CN115485479A (en) * | 2020-05-08 | 2022-12-16 | 大金工业株式会社 | Shrouded impeller and method of manufacturing shrouded impeller |
| CN115485479B (en) * | 2020-05-08 | 2023-10-24 | 大金工业株式会社 | Closed impeller and manufacturing method of closed impeller |
| US11879476B2 (en) | 2020-05-08 | 2024-01-23 | Daikin Industries, Ltd. | Closed impeller and method for producing closed impeller |
| CN112247492A (en) * | 2020-10-26 | 2021-01-22 | 航天科工哈尔滨风华有限公司 | Method for connecting impeller cover of closed impeller and impeller |
| CN112247492B (en) * | 2020-10-26 | 2022-08-12 | 航天科工哈尔滨风华有限公司 | Method for connecting impeller cover of closed impeller and impeller |
| WO2022111396A1 (en) * | 2020-11-24 | 2022-06-02 | 青岛海尔智能技术研发有限公司 | Closed impeller and centrifugal compressor having same |
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Application publication date: 20121212 |