CN203570600U - Two-stage centrifugal compressor - Google Patents

Two-stage centrifugal compressor Download PDF

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Publication number
CN203570600U
CN203570600U CN201320664578.8U CN201320664578U CN203570600U CN 203570600 U CN203570600 U CN 203570600U CN 201320664578 U CN201320664578 U CN 201320664578U CN 203570600 U CN203570600 U CN 203570600U
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China
Prior art keywords
centrifugal
compressing device
diffuser
stage
gas compressor
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Expired - Lifetime
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CN201320664578.8U
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Chinese (zh)
Inventor
温泉
银越千
王国文
唐方明
石建成
朱玲
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China Aircraft Power Machinery Institute
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China Aircraft Power Machinery Institute
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Abstract

The utility model provides a two-stage centrifugal compressor which comprises a first centrifugal compressing device, a second centrifugal compressing device and a connecting shaft. The second centrifugal compressing device is arranged on the lower portion of the first centrifugal compressing device and is communicated with the first centrifugal compressing device; the first centrifugal compressing device and the second centrifugal compressing device are respectively and fixedly arranged on the connecting shaft. According to the two-stage centrifugal compressor, the connecting shaft provides driving force for the first centrifugal compressing device and the second centrifugal compressing device, air is output from the first centrifugal compressing device into the second centrifugal compressing device and further pressurized, so that the pressure ratio of the centrifugal compressor is improved, and therefore the requirement of an engine is satisfied. The two-stage centrifugal compressor is simple in structure, small in number of parts, low in manufacturing cost and high in reliability and maintainability.

Description

Two stage centrifugal gas compressor
Technical field
The utility model relates to engine art, especially, relates to a kind of two stage centrifugal gas compressor.
Background technique
Gas compressor is as one of of paramount importance parts in gas turbine engine, and its effect is to provide high pressure, the high-temperature gas through overcompression to firing chamber, and its performance directly affects the level of motor.
Both at home and abroad the third generation gas turbine engine of mid power grade is understood the chosen axis heart Combined press mechanism of qi of wandering about as a refugee conventionally.Axial flow centrifugal combined-type gas compressor is combined by axial flow compressor and centrifugal compressor, and its complex structure, amount of parts is many, manufacture cost is high.Along with the raising of performance level, the leading edge of blade designs more and more thinlyyer, and its anti-foreign object damage ability declines.
Model utility content
The utility model object is to provide a kind of two stage centrifugal gas compressor, and to solve, current axial flow centrifugal combined-type air compressor structure is complicated, the low technical problem of anti-foreign object damage ability.
For achieving the above object, according to an aspect of the present utility model, provide a kind of two stage centrifugal gas compressor, comprised the first centrifugal compressing device, the second centrifugal compressing device and coupling shaft; The second centrifugal compressing device is arranged on the downstream of the first centrifugal compressing device and is communicated with the first centrifugal compressing device; The first centrifugal compressing device and the second centrifugal compressing device are all fixedly installed on coupling shaft.
Further, two stage centrifugal gas compressor comprises return channel, and the first centrifugal compressing device is connected with the second centrifugal compressing device by return channel.
Further, the first centrifugal compressing device comprises the first impeller chimney and can be arranged on the first centrifugal impeller in the first impeller chimney hinge; The second centrifugal compressing device comprises the second impeller chimney and can be arranged on the second centrifugal impeller in the second impeller chimney hinge.
Further, two stage centrifugal gas compressor comprises suction port, and suction port communicates with the first impeller chimney.
Further, the first centrifugal compressing device also comprises the first Diffuser that is arranged on the first impeller chimney downstream, and the first Diffuser is communicated with the second centrifugal compressing device;
The second centrifugal compressing device comprises the second Diffuser that is arranged on the second impeller chimney downstream.
Further, the first Diffuser is radial diffuser; The second Diffuser is radial diffuser or axial Diffuser.
Further, two stage centrifugal gas compressor also comprises the linkage section being connected between the first Diffuser and return channel.
The utlity model has following beneficial effect:
According to two stage centrifugal gas compressor of the present utility model, coupling shaft provides driving force to the first centrifugal compressing device and the second centrifugal compressing device, gas by the first centrifugal compressing device output enters in the second centrifugal compressing device, and be pressurized further, thereby improve the pressure ratio of centrifugal compressor, to meet the requirement of motor; And two stage centrifugal air compressor structure of the present utility model is simple, number of spare parts is few, low cost of manufacture, has higher reliability and maintainability.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to accompanying drawings, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the two stage centrifugal gas compressor of the utility model preferred embodiment.
10, the first centrifugal compressing device; 11, the first impeller chimney; 12, the first centrifugal impeller; 13, the first Diffuser; 20, the second centrifugal compressing device; 21, the second impeller chimney; 22, the second centrifugal impeller; 23, the second Diffuser; 30, coupling shaft; 40, return channel; 50, linkage section; 60, suction port.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1, preferred embodiment of the present utility model provides a kind of two stage centrifugal gas compressor, comprises the first centrifugal compressing device 20 of centrifugal compressing device 10, second and coupling shaft 30; The second centrifugal compressing device 20 is arranged on the downstream of the first centrifugal compressing device 10 and is communicated with the first centrifugal compressing device 10; The first centrifugal compressing device 10 and the second centrifugal compressing device 20 are all fixedly installed on coupling shaft 30.According to two stage centrifugal gas compressor of the present utility model, coupling shaft 30 provides driving force to the first centrifugal compressing device 10 and the second centrifugal compressing device 20, gas by the first centrifugal compressing device 10 outputs enters in the second centrifugal compressing device 20, and be pressurized further, thereby improve the pressure ratio of centrifugal compressor, to meet the requirement of motor; And two stage centrifugal air compressor structure of the present utility model is simple, number of spare parts is few, low cost of manufacture, has higher reliability and maintainability.
Particularly, the first centrifugal compressing device 10 comprises the first impeller chimney 11, first Diffuser 13 that can be arranged on the first centrifugal impeller 12 in the first impeller chimney 11 hinge and be arranged on the first impeller chimney 11 downstreams.The first centrifugal impeller 12 comprises the first installation sleeve being fixedly installed on coupling shaft 30 and is fixed on the blade on the first installation sleeve, is formed with the first air-flow path of the gas of discharging for delivery of the first centrifugal impeller 12 in the first impeller chimney 11.The downstream of the first impeller chimney 11 arranges the first Diffuser 13, and for the gas velocity in air-flow path is reduced, pressure improves.In the present embodiment, the first Diffuser 13 is radial diffuser.
The first Diffuser 13 is communicated with the second centrifugal compressing device 20, and the second centrifugal compressing device 20 comprises the second impeller chimney 21, second Diffuser 23 that can be arranged on the second centrifugal impeller 22 in the second impeller chimney 21 hinge and be arranged on the second impeller chimney 21 downstreams.The second centrifugal impeller 22 comprises the second installation sleeve being fixedly installed on coupling shaft 30 and is fixed on the blade on the second installation sleeve, is formed with the second air-flow path of the gas of discharging for delivery of the second centrifugal impeller 22 in the second impeller chimney 21.The downstream of the second impeller chimney 21 arranges the second Diffuser 23, and for the gas velocity in the second impeller chimney 21 is reduced, pressure improves.In the present embodiment, the second Diffuser 23 can be radial diffuser, can be also axial Diffuser.
The first centrifugal compressing device 10 is connected with the second centrifugal compressing device 20 by return channel 40.Return channel 40 comprises backflow housing and is arranged on the conducting element of backflow enclosure interior, conducting element is for giving vent to anger after water conservancy diversion and rectification the first centrifugal compressing device 10, gas is exported to the import of the second centrifugal compressing device 20, thereby made gas can meet the inlet air conditions of the second centrifugal compressing device 20.
Preferably, two stage centrifugal gas compressor also comprises the linkage section 50 that is arranged on the first Diffuser 13 downstreams, and linkage section 50 is connected between the first Diffuser 13 and return channel 40.Linkage section 50 is semi-annular shape, for changing from the direction of the first Diffuser 13 air-flow out and air-flow gently being entered in return channel 40.
The first centrifugal compressing device 10 and the second centrifugal compressing device 20 are fixed on same coupling shaft 30, by same turbine drives.And the first centrifugal impeller 12 and the second centrifugal impeller 22 are followed coupling shaft 30 simultaneously and are rotated, so that compact structure; Improve the reliability and maintainability of two stage centrifugal gas compressor.
Two stage centrifugal gas compressor of the present utility model also comprises suction port 60, and suction port 60 communicates with the first impeller chimney 11.The gas entering from suction port 60 enters in the first impeller chimney 11, after the centrifugal compressed of the first centrifugal impeller 12, enter in linkage section 50, and then by after return channel 40 water conservancy diversion and rectification, enter in the second impeller chimney 21, after the further compression of the second centrifugal impeller 22, enter in burner inner liner.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
According to two stage centrifugal gas compressor of the present utility model, coupling shaft 30 provides driving force to the first centrifugal compressing device 10 and the second centrifugal compressing device 20, gas by the first centrifugal compressing device 10 outputs enters in the second centrifugal compressing device 20, and be pressurized further, thereby improve the pressure ratio of centrifugal compressor, to meet the requirement of motor; And two stage centrifugal air compressor structure of the present utility model is simple, number of spare parts is few, low cost of manufacture, has higher reliability and maintainability.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (7)

1. a two stage centrifugal gas compressor, is characterized in that, comprises the first centrifugal compressing device (10), the second centrifugal compressing device (20) and coupling shaft (30);
Described the second centrifugal compressing device (20) is arranged on the downstream of described the first centrifugal compressing device (10) and is communicated with described the first centrifugal compressing device (10);
Described the first centrifugal compressing device (10) and described the second centrifugal compressing device (20) are all fixedly installed on described coupling shaft (30).
2. two stage centrifugal gas compressor according to claim 1, is characterized in that,
Described two stage centrifugal gas compressor comprises return channel (40), and described the first centrifugal compressing device (10) is connected with described the second centrifugal compressing device (20) by described return channel (40).
3. two stage centrifugal gas compressor according to claim 2, is characterized in that,
Described the first centrifugal compressing device (10) comprises the first impeller chimney (11) and can be arranged on the first centrifugal impeller (12) in described the first impeller chimney (11) hinge;
Described the second centrifugal compressing device (20) comprises the second impeller chimney (21) and can be arranged on the second centrifugal impeller (22) in described the second impeller chimney (21) hinge.
4. two stage centrifugal gas compressor according to claim 3, is characterized in that,
Described two stage centrifugal gas compressor comprises suction port, and described suction port communicates with described the first impeller chimney (11).
5. two stage centrifugal gas compressor according to claim 3, is characterized in that,
Described the first centrifugal compressing device (10) also comprises the first Diffuser (13) that is arranged on described the first impeller chimney (11) downstream, and described the first Diffuser (13) is communicated with described the second centrifugal compressing device (20);
Described the second centrifugal compressing device (20) comprises the second Diffuser (23) that is arranged on described the second impeller chimney (21) downstream.
6. two stage centrifugal gas compressor according to claim 5, is characterized in that,
Described the first Diffuser (13) is radial diffuser; Described the second Diffuser (23) is radial diffuser or axial Diffuser.
7. two stage centrifugal gas compressor according to claim 5, is characterized in that,
Described two stage centrifugal gas compressor also comprises the linkage section (50) being connected between described the first Diffuser (13) and described return channel (40).
CN201320664578.8U 2013-10-25 2013-10-25 Two-stage centrifugal compressor Expired - Lifetime CN203570600U (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105257574A (en) * 2015-11-27 2016-01-20 中国航空动力机械研究所 Oblique flow and centrifugal combined compressor
CN105275874A (en) * 2015-11-27 2016-01-27 中国航空动力机械研究所 Single-stage centrifugal compressor
CN105298921A (en) * 2014-12-17 2016-02-03 北京航空航天大学 Inter-stage U-shaped mixing diffuser for two-stage centrifugal gas compressor
CN105386998A (en) * 2015-11-27 2016-03-09 中国航空动力机械研究所 Returning device and double-stage combined air compressor with same
CN110296088A (en) * 2019-06-13 2019-10-01 西北工业大学 A kind of centrifugal compressor
CN113914998A (en) * 2021-11-04 2022-01-11 中国航发湖南动力机械研究所 Novel combined compression gas turbine engine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105298921A (en) * 2014-12-17 2016-02-03 北京航空航天大学 Inter-stage U-shaped mixing diffuser for two-stage centrifugal gas compressor
CN105298921B (en) * 2014-12-17 2017-07-04 北京航空航天大学 U-shaped mixing diffuser between two-stage centrifugal compressor stage
CN105257574A (en) * 2015-11-27 2016-01-20 中国航空动力机械研究所 Oblique flow and centrifugal combined compressor
CN105275874A (en) * 2015-11-27 2016-01-27 中国航空动力机械研究所 Single-stage centrifugal compressor
CN105386998A (en) * 2015-11-27 2016-03-09 中国航空动力机械研究所 Returning device and double-stage combined air compressor with same
CN110296088A (en) * 2019-06-13 2019-10-01 西北工业大学 A kind of centrifugal compressor
CN113914998A (en) * 2021-11-04 2022-01-11 中国航发湖南动力机械研究所 Novel combined compression gas turbine engine
CN113914998B (en) * 2021-11-04 2022-10-14 中国航发湖南动力机械研究所 Combined compression gas turbine engine

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Granted publication date: 20140430

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