CN114542518A - Double-duct compressor - Google Patents
Double-duct compressor Download PDFInfo
- Publication number
- CN114542518A CN114542518A CN202210168525.0A CN202210168525A CN114542518A CN 114542518 A CN114542518 A CN 114542518A CN 202210168525 A CN202210168525 A CN 202210168525A CN 114542518 A CN114542518 A CN 114542518A
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- Prior art keywords
- duct
- compressor
- double
- regulating valve
- flow regulating
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 38
- 230000009977 dual effect Effects 0.000 claims description 20
- 238000000926 separation method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/003—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by throttling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The application belongs to the technical field of aero-engine compressor design, and particularly relates to a double-duct compressor, wherein stator blades positioned at an inlet part of the double-duct compressor are angle-adjustable guide blades, and the rear edge parts of the angle-adjustable guide blades are bent along the reverse direction of the twisting direction of rear-stage rotor blades of the angle-adjustable guide blades; the double-duct compressor comprises: and the flow regulating valve plates are circumferentially arranged in the double-duct compressor outer duct, are hinged to the double-duct compressor outer duct and can be expanded or contracted in the double-duct compressor outer duct.
Description
Technical Field
The application belongs to the technical field of aero-engine compressor design, and particularly relates to a double-duct compressor.
Background
The compressor is a supercharging component in the aircraft engine, and multiple stages of stator blades and rotor blades are distributed in the compressor at intervals, in order to improve the thrust of the aircraft engine and reduce the oil consumption of the aircraft engine, an outer duct is additionally arranged behind a certain stage of stator blades, the outer duct is annular, and the part surrounded by the outer duct is an inner duct to form the double-duct compressor.
At present, for the flow that gets into two ducted compressors, the stator blade that the design is located two ducted compressor import positions is the adjustable stator blade of angle, in addition, for the flow distribution between interior duct, outer duct of regulation, the stator blade that the design is located before the outer duct import is adjustable stator blade to and the stator blade that the design is located behind the rotor blade of interior duct import position is adjustable stator blade, as shown in fig. 1, this kind of technical scheme has following defect:
1) the angle-adjustable guide blade positioned at the inlet part of the double-duct compressor has large surface total pressure loss, serious airflow separation and limited flow regulation capacity;
2) the inner duct of the double-duct compressor is positioned at the inner side of the outer duct, the space between the inner duct and the outer duct is narrow and insufficient for arranging an adjusting mechanism of the adjustable stator blade in the inner duct, the adjusting mechanism of the adjustable stator blade in the inner duct is mostly arranged outside the outer duct, the connection with the adjustable stator blade in the inner duct needs to pass through the outer duct, the structure is complex, the assembly is difficult, and the influence on the stability of airflow in the outer duct can be caused;
3) the flow distribution between the inner duct and the outer duct in the double-duct compressor is adjusted by the adjustable stator blade positioned in front of the inlet of the outer duct and the adjustable stator blade positioned in the inner duct, the outer duct does not have active flow adjusting capacity and can only be adjusted passively, the adjusting capacity is limited, and the front-stage pressure and the rear-stage pressure in the double-duct compressor are difficult to be adjusted effectively.
The present application has been made in view of the above-mentioned technical drawbacks.
It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present application.
Disclosure of Invention
It is an object of the present application to provide a dual duct compressor that overcomes or mitigates at least one of the technical disadvantages known to exist.
The technical scheme of the application is as follows:
a kind of double-duct compressor, the stator blade located at inlet position of the double-duct compressor is an angle adjustable guide blade, the trailing edge position of the angle adjustable guide blade is curved along the reverse direction of the twisting direction of the rear stage rotor blade;
the double-duct compressor comprises:
and the flow regulating valve plates are circumferentially arranged in the double-duct compressor outer duct, are hinged to the double-duct compressor outer duct and can be expanded or contracted in the double-duct compressor outer duct.
According to at least one embodiment of the present application, in the dual-duct compressor, the outer flow path of the outer duct of the dual-duct compressor has a plurality of openings;
each flow regulating valve sheet is provided with a convex part, and each convex part correspondingly extends out of one opening;
the dual duct compressor further comprises:
and the linkage ring is sleeved on the periphery of the double-duct compressor, is hinged with each protruding part, and can axially move along the double-duct compressor so as to drive the flow regulating valve plates to synchronously open or contract.
According to at least one embodiment of the application, in the double-duct compressor, each protruding portion is provided with a through hole, and each through hole is sleeved on the periphery of the linkage ring.
According to at least one embodiment of the present application, the dual-duct compressor further includes:
and the actuating cylinder is hinged between the outer side of the double-duct compressor and the linkage ring so as to drive the linkage ring to move along the axial direction of the double-duct compressor.
According to at least one embodiment of the present application, in the dual-bypass compressor, the actuating cylinders are distributed along the circumferential direction of the dual-bypass compressor.
According to at least one embodiment of the application, in the double-duct compressor, edge portions of adjacent flow regulating valve plates are mutually overlapped and can relatively slide in the circumferential direction.
According to at least one embodiment of the present application, in the dual-duct compressor, two side edges of one of the flow regulating valve plates are overlapped above two adjacent flow regulating valve plates, or overlapped below two adjacent flow regulating valve plates.
According to at least one embodiment of the present application, in the dual-duct compressor, the stator blade located before the inlet of the outer duct of the dual-duct compressor is an adjustable stator blade.
According to at least one embodiment of the present application, the dual-duct compressor further includes:
and the support plates are arranged in the outer duct of the double-duct compressor along the circumferential direction and are supported between the inner flow path and the outer flow path of the outer duct of the double-duct compressor.
According to at least one embodiment of the present application, in the dual-bypass compressor, each strut is located before each flow regulating valve sheet.
Drawings
FIG. 1 is a schematic diagram of a prior art dual ducted compressor;
FIG. 2 is a schematic diagram of a dual ducted compressor provided in an embodiment of the present application;
FIG. 3 is a schematic view of an adjustable angle turning vane provided by an embodiment of the present application;
FIG. 4 is a schematic view of a flow regulating valve plate according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram illustrating a flow field separation comparison between a dual-duct compressor provided in an embodiment of the present application and a flow field separation in a flow channel of a conventional dual-duct compressor;
wherein:
1-an angularly adjustable guide vane; 2-rotor blades; 3-a flow regulating valve plate; 4-a linkage ring; 5-an actuator cylinder; 6-support plate.
For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; in addition, the drawings are used for illustrative purposes, and the positional relationship is only for illustrative purposes and is not to be construed as limiting the patent.
Detailed Description
In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general designs, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.
In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the context of describing the application is not to be construed as an absolute limitation on the number, but rather as the presence of at least one. The word "comprising" or "comprises", and the like, when used in this description, is intended to specify the presence of stated elements or items, but not the exclusion of other elements or items.
Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.
The present application is described in further detail below with reference to fig. 1 to 5.
A kind of double-duct compressor, the stator blade located at inlet position of the double-duct compressor is an angle adjustable guide blade 1, the trailing edge position of the angle adjustable guide blade 1 is curved along the reverse direction of the twisting direction of its rear stage rotor blade 2;
the double-duct compressor comprises:
the flow regulating valve plates 3 are circumferentially arranged in the double-duct compressor outer duct, are hinged to the double-duct compressor outer duct, and can be expanded or contracted in the double-duct compressor outer duct.
For the dual-duct compressor disclosed in the above embodiment, it can be understood by those skilled in the art that the stator blade at the inlet of the dual-duct compressor is designed as the angle-adjustable guide blade 1, and the rear edge of the angle-adjustable guide blade 1 is designed to be bent in the reverse direction of the twisting direction of the rear rotor blade 2, that is, in the reverse direction of the rotation of the rear rotor blade 2, and the deflection of the airflow entering the dual-duct compressor is completed at the rear edge bent portion of the angle-adjustable guide blade 1, so that the total pressure loss on the surface is small, the airflow separation is light, and compared with the flow field separation in the flow channel of the existing dual-duct compressor, as shown in fig. 5, the improvement on the flow field in the flow channel is obvious, and the flow has a large adjusting capability.
For the double-duct compressor disclosed in the above embodiment, it can be understood by those skilled in the art that the flow regulating valve plates 3 capable of expanding or contracting are circumferentially arranged in the double-duct compressor outer duct, and the effective flow area of the double-duct compressor outer duct can be effectively changed by 0-100%, so that the active regulation of the flow of the double-duct compressor outer duct can be realized, the regulation capability is large, the flow distribution between the inner duct and the outer duct in the double-duct compressor can be effectively controlled, under the condition that the rotation speed of the double-duct compressor is high, each flow regulating valve plate 3 can be appropriately contracted, the effective flow area of the outer duct can be reduced, the front stage is matched towards a higher pressure ratio, the load of the rear stage can be reduced while the efficiency of the inner duct is improved, the margin for stable operation of the inner duct can be improved, and when the matching pressure ratio of the front stage is higher, each flow regulating valve plate 3 can be appropriately opened, the effective flow area of the outer duct is increased, the pressure matching of the front stage and the rear stage is adjusted, and the stable work of the double-duct compressor is ensured.
For the double-duct compressor disclosed in the above embodiment, as can be further understood by those skilled in the art, the design of the double-duct compressor is that the flow regulating valve plates 3 capable of expanding or contracting are circumferentially arranged in the double-duct compressor outer duct, so that the effective flow area of the double-duct compressor outer duct is changed, the flow distribution between the inner duct and the outer duct in the double-duct compressor is realized, the arrangement of the adjustable stator blades of the inner duct and the adjusting mechanisms thereof can be eliminated, the complexity of the structure is reduced, and the stability of the air flow in the outer duct is ensured.
In some optional embodiments, in the dual-duct compressor, the outer flow path of the dual-duct compressor outer duct has a plurality of openings;
each flow regulating valve plate 3 is provided with a convex part, and each convex part correspondingly extends out of one opening;
the dual duct compressor further comprises:
and the linkage ring 4 is sleeved on the periphery of the double-duct compressor, is hinged with each protruding part, and can axially move along the double-duct compressor so as to drive the flow regulating valve plate 3 to synchronously open or contract.
In some alternative embodiments, in the dual duct compressor, each protruding portion has a through hole, and each through hole is sleeved on the outer periphery of the link ring 4, that is, the link ring 4 is designed to pass through the through hole on the protruding portion of each flow regulating valve plate 3, and is reliably connected with each flow regulating valve plate 3.
In some optional embodiments, the dual duct compressor further includes:
and the actuating cylinder 5 is hinged between the outer side of the double-duct compressor and the linkage ring 4 and can drive the linkage ring 4 to move along the axial direction of the double-duct compressor.
In some alternative embodiments, in the double-bypass compressor described above, a plurality of the rams 5 are circumferentially distributed along the double-bypass compressor.
In some optional embodiments, in the dual-duct compressor, edge portions of adjacent flow regulating valve plates 3 are overlapped with each other and can slide relative to each other in the circumferential direction, so that when the flow regulating valve plates are expanded or contracted, the sealing performance in the circumferential direction can be ensured, and the opening and contraction synchronization of each flow regulating valve plate 3 can be ensured.
In some alternative embodiments, in the dual bypass compressor, two side edges of one flow regulating valve plate 3 in each flow regulating valve plate 3 are overlapped above the edges of two adjacent flow regulating valve plates 3, or overlapped below the edges of two adjacent flow regulating valve plates 3.
In some optional embodiments, in the dual-duct compressor, the stator blade located before the inlet of the outer duct of the dual-duct compressor is an adjustable stator blade, and is matched with each flow regulating valve plate 3, so that the flow distribution between the inner duct and the outer duct of the dual-duct compressor can be efficiently controlled.
In some optional embodiments, the dual duct compressor further includes:
and a plurality of support plates 6 are arranged in the outer duct of the double-duct compressor along the circumferential direction and supported between the inner flow path and the outer flow path of the outer duct of the double-duct compressor.
In some alternative embodiments, in the dual bypass compressor described above, each strut 6 is located before each flow regulating valve plate 3.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Having thus described the present invention in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present invention is not limited to those specific embodiments, and that equivalent changes or substitutions of the related technical features may be made by those skilled in the art without departing from the principle of the present invention, and those technical aspects after such changes or substitutions will fall within the scope of the present invention.
Claims (10)
1. A double-duct compressor is characterized in that,
the stator blade at the inlet part of the double-duct compressor is an angle-adjustable guide blade (1), and the rear edge part of the angle-adjustable guide blade (1) is bent along the reverse direction of the twisting direction of the rear-stage rotor blade (2);
the double-duct compressor comprises:
and the flow regulating valve plates (3) are arranged in the double-duct compressor outer duct along the circumferential direction, are hinged on the double-duct compressor outer duct and can be expanded or contracted in the double-duct compressor outer duct.
2. The dual ducted compressor in accordance with claim 1,
the outer flow path of the double-duct compressor outer duct is provided with a plurality of openings;
each flow regulating valve plate (3) is provided with a protruding part, and each protruding part correspondingly extends out of one opening;
the dual duct compressor further comprises:
and the linkage ring (4) is sleeved on the periphery of the double-duct compressor, is hinged with each protruding part, and can axially move along the double-duct compressor so as to drive the flow regulating valve plate (3) to synchronously open or contract.
3. The dual ducted compressor in accordance with claim 2,
each protruding part is provided with a through hole, and each through hole is sleeved on the periphery of the linkage ring (4).
4. The dual ducted compressor in accordance with claim 2,
further comprising:
the actuating cylinder (5) is hinged between the outer side of the double-duct compressor and the linkage ring (4) and can drive the linkage ring (4) to move along the axial direction of the double-duct compressor.
5. The dual ducted compressor in accordance with claim 1,
the actuating cylinders (5) are multiple and are distributed along the circumferential direction of the double-duct compressor.
6. The dual ducted compressor in accordance with claim 1,
the edge parts of the adjacent flow regulating valve plates (3) are mutually overlapped and can relatively slide in the circumferential direction.
7. The dual ducted compressor in accordance with claim 6,
two side edges of one flow regulating valve plate (3) in each flow regulating valve plate (3) are overlapped above the edges of two adjacent flow regulating valve plates (3) or are overlapped below the edges of two adjacent flow regulating valve plates (3).
8. The dual ducted compressor in accordance with claim 1,
the stator blade positioned in front of the inlet of the outer duct of the double-duct compressor is an adjustable stator blade.
9. The dual ducted compressor in accordance with claim 1,
further comprising:
and the support plates (6) are arranged in the double-duct compressor outer duct along the circumferential direction and are supported between the inner flow path and the outer flow path of the double-duct compressor outer duct.
10. The dual ducted compressor in accordance with claim 1,
each support plate (6) is positioned in front of each flow regulating valve plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210168525.0A CN114542518A (en) | 2022-02-23 | 2022-02-23 | Double-duct compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210168525.0A CN114542518A (en) | 2022-02-23 | 2022-02-23 | Double-duct compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114542518A true CN114542518A (en) | 2022-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210168525.0A Pending CN114542518A (en) | 2022-02-23 | 2022-02-23 | Double-duct compressor |
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| CN (1) | CN114542518A (en) |
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