CN102691666A - Double-stage centrifugal air compressing device - Google Patents
Double-stage centrifugal air compressing device Download PDFInfo
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- CN102691666A CN102691666A CN2012102052783A CN201210205278A CN102691666A CN 102691666 A CN102691666 A CN 102691666A CN 2012102052783 A CN2012102052783 A CN 2012102052783A CN 201210205278 A CN201210205278 A CN 201210205278A CN 102691666 A CN102691666 A CN 102691666A
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Abstract
The invention provides a double-stage centrifugal air compressing device. The double-stage centrifugal air compressing device comprises a first-stage centrifugal air compressing device, a second-grade centrifugal air compressing device, a connecting shaft and a reflowing device, wherein the first-stage centrifugal air compressing device comprises a first centrifugal impeller and a first shell; the second-grade centrifugal air compressing device comprises a second centrifugal impeller and a second shell; the connecting shaft is fixedly connected with the first-stage centrifugal air compressing device; the second-grade centrifugal air compressing device is movably connected with the connecting shaft; and the first-stage centrifugal air compressing device is connected with the second-grade centrifugal air compressing device through the flowing device. According to the double-stage centrifugal air compressing device, the first-stage centrifugal air compressing device is connected with the second-grade centrifugal air compressing device through the flowing device, so that the pressurizing ratio of the air compressing device is improved and the oil consumption amount is reduced; and meanwhile, the quantity of parts of the air compressing device is reduced and the manufacturing cost of the air compressing device is reduced.
Description
Technical field
The present invention relates to the gas compressor field, more specifically, relate to the centrifugal device of calming the anger of a kind of twin-stage.
Background technique
In aviation or ground gas turbine field, the device of calming the anger of the prior art mainly is divided into following three types: axial flow calm the anger device, one-stage centrifugal formula calm the anger device and the hybrid device of calming the anger.
Axial flow calms the anger that device has that pressure ratio height, efficient are high, the unit area air mass flow is big and advantage such as frontal resistance is little, is mainly used in large and medium-sized trust engine.The one-stage centrifugal formula device of calming the anger has simple in structure, reliable operation, stable operation range broad and single stage supercharging than advantages of higher, is mainly used in miniature power unit and aircraft auxiliary power plant.
The hybrid device of calming the anger is axial flow the calm the anger combining form of device of device and one-stage centrifugal formula of calming the anger, embody single stage supercharging than high advantage in, avoided the problem that causes energy loss to increase because of the blade height problem again.Yet the hybrid device of calming the anger has following shortcoming: the number of spare parts of (1) hybrid device of calming the anger is many, complex structure, manufacture cost height and poor reliability; (2) receptance to tip clearance requires height, and manufacture cost is high; (3) increase than still remaining raising; (4) import level is the axial flow level, and anti-foreign object is injured a little less than (FOD) ability; (5) oil consumption rate is high; (6) stall margin is lower.
Summary of the invention
The present invention aims to provide the centrifugal device of calming the anger of a kind of twin-stage, with the apparatus structure complicacy of calming the anger that solves existing technology, the problem that manufacture cost is high, pressure ratio is low.
For solving the problems of the technologies described above, the invention provides the centrifugal device of calming the anger of a kind of twin-stage, comprising: the centrifugal device of calming the anger of the first order, the centrifugal device of calming the anger of the first order comprises first centrifugal impeller and first housing; The centrifugal device of calming the anger in the second level, the centrifugal device of calming the anger in the second level comprises second centrifugal impeller and second housing; Coupling shaft, the centrifugal device of calming the anger of the first order is fixedly connected with coupling shaft, the second level centrifugal calm the anger device and coupling shaft flexible connection; Return channel, the centrifugal device of calming the anger of the first order is connected through the centrifugal device of calming the anger in the return channel and the second level.
Further, first centrifugal impeller is arranged in first housing pivotly; Second centrifugal impeller is arranged in second housing pivotly, and second centrifugal impeller is connected with return channel pivotly.
Further, return channel comprises backflow housing and diversion division, and diversion division is arranged on the inside of backflow housing.
Further, pass housing during the centrifugal device of calming the anger of twin-stage also comprises, return channel is connected with first housing through middle biography housing.
Further, the centrifugal device of calming the anger of twin-stage also comprises first air inlet system, and first air inlet system is connected with first housing; First air inlet system comprises first inlet casing and first Inlet Guide Vane, and first Inlet Guide Vane is arranged on the inside of first inlet casing, and first inlet casing is connected with first centrifugal impeller pivotly.
Further, the centrifugal device of calming the anger of twin-stage also comprises dust removal apparatus, is separately installed with dust removal apparatus on first air inlet system and/or second housing.
Further, the centrifugal device of calming the anger of twin-stage also comprises second air inlet system, and return channel is connected with second housing through second air inlet system; Second air inlet system comprises second inlet casing and second Inlet Guide Vane that is arranged in second inlet casing.
Further, the centrifugal device of calming the anger of the first order also comprises the first diffusion portion that is arranged in first housing, and the centrifugal device of calming the anger in the second level also comprises the second diffusion portion that is arranged in second housing.
Further, the first diffusion portion comprises along first radial blade that radially is provided with of coupling shaft with along first axial blade of the axial setting of coupling shaft; The second diffusion portion comprises along second radial blade that radially is provided with of coupling shaft with along second axial blade of the axial setting of coupling shaft.
Further, first centrifugal impeller and second centrifugal impeller are the cast steel double shrouded wheels.
The centrifugal device of calming the anger of twin-stage among the present invention, the centrifugal device of calming the anger of the first order is connected through the centrifugal device of calming the anger in the return channel and the second level, improved the device of calming the anger pressure ratio, reduced fuel consumption; Simultaneously, reduced the number of spare parts of the device of calming the anger and reduced the manufacture cost of the device of calming the anger.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the structural representation of the centrifugal device of calming the anger of the twin-stage among the present invention;
Fig. 2 has schematically shown the structural representation of the return channel among the present invention;
Fig. 3 has schematically shown the structural representation that is installed in the dust removal apparatus on first air inlet system among the present invention;
Fig. 4 has schematically shown the structural representation that is installed in the dust removal apparatus on second housing among the present invention;
Fig. 5 has schematically shown the partial structurtes schematic representation of the centrifugal device of calming the anger of the first order among the present invention; And
Fig. 6 has schematically shown the partial structurtes schematic representation of the centrifugal device of calming the anger in the second level among the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
The invention provides the centrifugal device of calming the anger of a kind of twin-stage.As shown in Figure 1, the centrifugal device of calming the anger of the twin-stage among the present invention comprises: the centrifugal device 100 of calming the anger of the first order, and the centrifugal device 100 of calming the anger of the first order comprises first centrifugal impeller 110 and first housing 120; The centrifugal device 200 of calming the anger in the second level, the centrifugal device 200 of calming the anger in the second level comprises second centrifugal impeller 210 and second housing 220; Coupling shaft 300, the centrifugal device 100 of calming the anger of the first order is fixedly connected with coupling shaft 300, and the centrifugal device 200 of calming the anger in the second level flexibly connects with coupling shaft 300; Return channel 400, the centrifugal device 100 of calming the anger of the first order is connected through the centrifugal device 200 of calming the anger in the return channel 400 and the second level.
Wherein, Coupling shaft 300 provides driving force for the centrifugal device 100 of calming the anger of the first order; Flow in the return channel 400 by the centrifugal gas of calming the anger device 100 output of the first order, pass through the water conservancy diversion and rectification of return channel 400 then after, be transported to the centrifugal device 200 of calming the anger in the second level by further superchargings; Thereby improved the pressure ratio of the centrifugal device of calming the anger, to accomplish the two-stage pressurization of gas.In addition, the centrifugal device of calming the anger of the twin-stage among the present invention has that number of spare parts is few, the characteristics of low cost of manufacture.
Preferably, as shown in Figure 1, first centrifugal impeller 110 of the present invention is arranged in first housing 120 pivotly; Second centrifugal impeller 210 is arranged in second housing 220 pivotly, and second centrifugal impeller 210 is connected with return channel 400 pivotly.First centrifugal impeller 110 is arranged in first housing 120 pivotly, and first housing 120 provides support power for first centrifugal impeller 110; And first housing 120 is formed with the air-flow path that is used to carry the gas that first centrifugal impeller 110 discharges.Second centrifugal impeller 210 is connected with return channel 400 pivotly; Because return channel 400 is connected with first housing 120; And first housing 120 is fixed; Therefore just can provide support power through return channel 400, to confirm the position of second centrifugal impeller 210 in the centrifugal device of calming the anger of twin-stage to second centrifugal impeller 210.Second housing 220 has the air-flow path that is used to carry the gas that second centrifugal impeller 210 produces, get into second housing 220 by return channel 400 effluent airs after, flow out by this air-flow path.
Preferably, as depicted in figs. 1 and 2, the return channel 400 among the present invention comprises backflow housing 410 and diversion division 420, and diversion division 420 is arranged on the inside of backflow housing 410.The exit gas of the centrifugal device 100 of calming the anger of the first order flows in the return channel 400; Behind the water conservancy diversion and rectification of the diversion division 420 in return channel 400; Gas is exported to the import of the centrifugal device 200 of calming the anger in the second level, thereby make centrifugal device 100 exit gass of calming the anger of the first order can satisfy the requirement of the centrifugal device 200 inlet gas conditions of calming the anger in the second level.
Preferably, as shown in Figure 1, during also comprising, the centrifugal device of calming the anger of twin-stage passes housing 500, and return channel 400 is connected with first housing 120 through middle biography housing 500.The middle housing 500 that passes matches with the backflow housing 410 of return channel 400, to form the gas-entered passageway of complete return channel 400.
Preferably, the centrifugal device of calming the anger of the twin-stage among the present invention also comprises first air inlet system 600 (please refer to Fig. 1), and first air inlet system 600 is connected with first housing 120; First air inlet system 600 comprises that first inlet casing 610 and first Inlet Guide Vane, 620, the first Inlet Guide Vanes 620 are arranged on the inside of first inlet casing 610, and first inlet casing 610 is connected with first centrifugal impeller 110 pivotly.First centrifugal impeller 110 is supported on first inlet casing 610, and locatees through first inlet casing 610.Owing in first air inlet system 600, be provided with first Inlet Guide Vane 620; Thereby the gas that gets into first air inlet system 600 is after by first Inlet Guide Vane, 620 water conservancy diversion; Get into first centrifugal impeller 110; So that gas has satisfied the condition for import of the centrifugal device 100 of calming the anger of the first order, guaranteed the proper functioning of the centrifugal device of calming the anger of twin-stage.
Preferably, as shown in figures 1 and 3, the centrifugal device of calming the anger of twin-stage also comprises on dust removal apparatus 510, the first air inlet systems 600 and/or second housing 220 and is separately installed with dust removal apparatus 510.Dust removal apparatus 510 is used to remove the laying dust in the air-flow path, thereby but has realized that the centrifugal device of calming the anger of twin-stage works long hours and the purpose of good operation.
Please refer to Fig. 3 and Fig. 4, preferably, dust removal apparatus 510 comprises body 511, guide bracket 512, nozzle 513, pressure spring 514 and seal ring 515.Wherein, body 511 is connected with second housing 220, so that dust removal apparatus 510 is fixed on the middle inside that passes housing 500.The body 511 formation cavity that matches with guide bracket 512 is provided with the nozzle 513 that can move forward and backward in the guide bracket 512; 512 of nozzle 513 and guide brackets are provided with pressure spring 514 and seal ring 515.When the gas pressure in the cavity of dust removal apparatus 510 during greater than the gas pressure in the air-flow path of the ingress of second centrifugal impeller 210; Gas in the cavity of dust removal apparatus 510 promotes the air-flow path motion of nozzle 513 to the ingress of second centrifugal impeller 210; This moment, pressure spring 514 was compressed, and the gas in the cavity of dust removal apparatus 510 flows into the air-flow path of second centrifugal impeller, 210 ingress and drives the laying dust that second centrifugal impeller 210 rotated and blew away second centrifugal impeller 210.Further, offer the size of gas pressure of the cavity of dust removal apparatus 510 through adjusting, can change the position that nozzle 513 stretches into the air-flow path of the centrifugal pressure device of twin-stage, with the laying dust in the abundant removing passage.
Preferably, the centrifugal device of calming the anger of the twin-stage among the present invention also comprises second air inlet system 700 (please refer to Fig. 1), and return channel 400 is connected with second housing 220 through second air inlet system 700; Second air inlet system 700 comprises second Inlet Guide Vane 720 in second inlet casing 710 and second inlet casing 710 that is arranged on second air inlet system 700.Gas through return channel 400 outputs gets into second air inlet system 700; Second Inlet Guide Vane 720 in second air inlet system 700; With flowing to the centrifugal device 200 of calming the anger in the second level behind the further water conservancy diversion of gas, make gas after the effect of second Inlet Guide Vane 720 further satisfy the gas inlet condition of the centrifugal device 200 of calming the anger in the second level.
Preferably, as Fig. 1 and shown in Figure 5 in, the centrifugal device 100 of calming the anger of the first order also comprises the first diffusion portion 121 that is arranged in first housing 120, the centrifugal device 200 of calming the anger in the second level also comprises the second diffusion portion 221 that is arranged in second housing 220.The first diffusion portion 121 comprises along the first radial blade 121a that radially is provided with of coupling shaft 300 with along the first axial blade 121b of the axial setting of coupling shaft 300; The second diffusion portion 221 comprises along the second radial blade 221a that radially is provided with of coupling shaft 300 with along the second axial blade 221b (please refer to Fig. 6) of the axial setting of coupling shaft 300.
The gas of the first centrifugal impeller 110 output first radial blade 121a that at first flows through.Preferably, the first radial blade 121a is made up of a plurality of blades and through being bolted to the inside of first housing 120, and gas is flowed to the first axial blade 121b during through the first radial blade 121a after a plurality of blade speedups, the supercharging.Preferably, the first axial blade 121b form by a plurality of blades and radially and the distributed and arranged of ring-type in the inside of first housing 120.Gas through the first axial blade 121b deceleration supercharging after, flow into return channel 400.
By the gas of the second centrifugal impeller 210 output second radial blade 221a that at first flows through.Preferably, the second radial blade 221a is made up of a plurality of blades and through being bolted to the inside of second housing 220, and gas is flowed to the second axial blade 221b during through the second radial blade 221a after a plurality of blade speedups, the supercharging.Preferably, the second axial blade 221b form by a plurality of blades and radially and the distributed and arranged of ring-type in the inside of second housing 220.Gas is exported after through the second axial blade 221b deceleration supercharging, thereby has realized the supercharging of gas in the centrifugal device of calming the anger of twin-stage.
Preferably, first centrifugal impeller 110 among the present invention and second centrifugal impeller 210 are cast steel double shrouded wheels.Because the gap of first centrifugal impeller 110 (double shrouded wheel) and first housing 120 is much smaller than the gap of the unshrouded impeller and first housing 120; And the gap of second centrifugal impeller 210 (double shrouded wheel) and second housing 220 is much smaller than the gap of the unshrouded impeller and second housing 220; So first centrifugal impeller 110 and second centrifugal impeller 210 have been eliminated the refluence phenomenon that causes because of the radial clearance between impeller and the housing is excessive, have reduced the loss of secondary flow effectively.
The centrifugal pressure device of twin-stage also comprises many places comb tooth seal ring 800.Preferably, comb tooth seal ring 800 is used between two devices that match.Preferably, comb tooth seal ring 800 is that two groove and tongues on the parts that cooperatively interact are set.Please refer to Fig. 5 and Fig. 6; Among the present invention; Can between first inlet casing 610 and first centrifugal impeller 110 and/or first centrifugal impeller 110 and first housing 120 and/or second inlet casing 710 and second centrifugal impeller 210, comb tooth seal ring 800 be set respectively.Owing to be provided with comb tooth seal ring 800, can reduce the air loss between each parts, thereby improve the working efficiency of gas.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the centrifugal device of calming the anger of twin-stage is characterized in that, comprising:
The centrifugal device of calming the anger of the first order (100), the centrifugal device of calming the anger of the said first order (100) comprise first centrifugal impeller (110) and first housing (120);
The centrifugal device of calming the anger in the second level (200), the centrifugal device of calming the anger in the said second level (200) comprise second centrifugal impeller (210) and second housing (220);
Coupling shaft (300), the centrifugal device of calming the anger of the said first order (100) is fixedly connected with said coupling shaft (300), and the centrifugal device of calming the anger in the said second level (200) flexibly connects with said coupling shaft (300);
Return channel (400), the centrifugal device of calming the anger of the said first order (100) is connected through the centrifugal device of calming the anger in the said return channel (400) and the said second level (200).
2. the centrifugal device of calming the anger of twin-stage according to claim 1 is characterized in that, said first centrifugal impeller (110) is arranged in said first housing (120) pivotly; Said second centrifugal impeller (210) is arranged in said second housing (220) pivotly, and said second centrifugal impeller (210) is connected with said return channel (400) pivotly.
3. the centrifugal device of calming the anger of twin-stage according to claim 1 is characterized in that, said return channel (400) comprises backflow housing (410) and diversion division (420), and said diversion division (420) is arranged on the inside of said backflow housing (410).
4. the centrifugal device of calming the anger of twin-stage according to claim 3; It is characterized in that; Pass housing (500) during the centrifugal device of calming the anger of said twin-stage also comprises, said return channel (400) is connected with said first housing (120) through passing housing (500) in said.
5. according to the centrifugal device of calming the anger of each described twin-stage among the claim 1-4, it is characterized in that the centrifugal device of calming the anger of said twin-stage also comprises first air inlet system (600), said first air inlet system (600) is connected with said first housing (120); Said first air inlet system (600) comprises first inlet casing (610) and first Inlet Guide Vane (620); Said first Inlet Guide Vane (620) is arranged on the inside of said first inlet casing (610), and said first inlet casing (610) is connected with said first centrifugal impeller (110) pivotly.
6. the centrifugal device of calming the anger of twin-stage according to claim 5; It is characterized in that; The centrifugal device of calming the anger of said twin-stage also comprises dust removal apparatus (510), is separately installed with said dust removal apparatus (510) on said first air inlet system (600) and/or said second housing (220).
7. the centrifugal device of calming the anger of twin-stage according to claim 6; It is characterized in that; The centrifugal device of calming the anger of said twin-stage also comprises second air inlet system (700), and said return channel (400) is connected with said second housing (220) through said second air inlet system (700); Said second air inlet system (700) comprises second inlet casing (710) and is arranged on second Inlet Guide Vane (720) in said second inlet casing (710).
8. according to the centrifugal device of calming the anger of each described twin-stage among the claim 1-4; It is characterized in that; The centrifugal device of calming the anger of the said first order (100) also comprises the first diffusion portion (121) that is arranged in said first housing (120), and the centrifugal device of calming the anger in the said second level (200) also comprises the second diffusion portion (221) that is arranged in said second housing (220).
9. the centrifugal device of calming the anger of twin-stage according to claim 8; It is characterized in that the said first diffusion portion (121) comprises along first axial blade (121b) of the axial setting of first radial blade (121a) that radially is provided with of said coupling shaft (300) and the said coupling shaft in edge (300); The said second diffusion portion (221) comprises along second axial blade (221b) of the axial setting of second radial blade (221a) that radially is provided with of said coupling shaft (300) and the said coupling shaft in edge (300).
10. according to the centrifugal device of calming the anger of each described twin-stage among the claim 1-4, it is characterized in that said first centrifugal impeller (110) is the cast steel double shrouded wheel with said second centrifugal impeller (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205278.3A CN102691666B (en) | 2012-06-20 | 2012-06-20 | Two stage centrifugal compressing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205278.3A CN102691666B (en) | 2012-06-20 | 2012-06-20 | Two stage centrifugal compressing device |
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| CN102691666A true CN102691666A (en) | 2012-09-26 |
| CN102691666B CN102691666B (en) | 2015-09-23 |
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| CN201210205278.3A Active CN102691666B (en) | 2012-06-20 | 2012-06-20 | Two stage centrifugal compressing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103742450A (en) * | 2013-12-22 | 2014-04-23 | 中国科学院工程热物理研究所 | Vane type diffuser with horseshoe-shaped diffuser channels |
| CN107605764A (en) * | 2017-08-22 | 2018-01-19 | 重庆美的通用制冷设备有限公司 | Compound compressor |
| JP7164346B2 (en) | 2018-07-24 | 2022-11-01 | 三菱重工マリンマシナリ株式会社 | Rotating machines and turbochargers |
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| CN103742450A (en) * | 2013-12-22 | 2014-04-23 | 中国科学院工程热物理研究所 | Vane type diffuser with horseshoe-shaped diffuser channels |
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| CN107605764A (en) * | 2017-08-22 | 2018-01-19 | 重庆美的通用制冷设备有限公司 | Compound compressor |
| JP7164346B2 (en) | 2018-07-24 | 2022-11-01 | 三菱重工マリンマシナリ株式会社 | Rotating machines and turbochargers |
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| CN102691666B (en) | 2015-09-23 |
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