CN114215788A - Counter-rotating stamping gas compressor - Google Patents
Counter-rotating stamping gas compressor Download PDFInfo
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- CN114215788A CN114215788A CN202111445878.2A CN202111445878A CN114215788A CN 114215788 A CN114215788 A CN 114215788A CN 202111445878 A CN202111445878 A CN 202111445878A CN 114215788 A CN114215788 A CN 114215788A
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- rotor blade
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- 238000004080 punching Methods 0.000 abstract description 25
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 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
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
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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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/053—Shafts
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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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
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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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
- F04D29/324—Blades
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application belongs to the technical field of design of compressors in aircraft engines, and particularly relates to a counter-rotating punching compressor, which comprises: an outer case; the preceding-stage rotor blade is arranged in the outer casing and is positioned at the inlet end of the outer casing; the splitter ring is arranged in the outer casing, is positioned at the outlet end of the outer casing and forms a culvert runner with the outer casing; the inlet end of the culvert channel is over against the blade tip part of the preceding-stage rotor blade; and the rear-stage rotor blade is arranged in the splitter ring and can rotate reversely relative to the front-stage rotor blade.
Description
Technical Field
The application belongs to the technical field of design of compressors in aircraft engines, and particularly relates to a counter-rotating punching compressor.
Background
The requirement of high thrust-weight ratio of an aircraft engine puts forward the requirements of high pressure ratio and large flow rate on a gas compressor, and currently, the aircraft engine mainly adopts the following two schemes:
1) the multistage compressors are connected in series, the technical scheme can meet the requirements of the aircraft engine on the high pressure ratio and the large flow rate of the compressors, but the structural size of the compressed air is increased on the whole, the compressed air occupies a large space, occupies precious space resources, has a large weight and does not meet the current weight reduction requirement of the aircraft engine;
2) the device is modified into a counter-rotating punching compressor, the air flow is pressurized by utilizing the principle that the high-speed outlet air flow of the high-pressure movable blades performs work acceleration in a complex trailing edge shock wave flow field, the requirement of an aircraft engine on the high pressure ratio of the compressor can be met, but the flow rate cannot meet the requirement of the aircraft engine on the large flow rate of the compressor.
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 counter-rotating ramjet compressor that overcomes or alleviates at least one of the technical disadvantages of the known prior art.
The technical scheme of the application is as follows:
a counter-rotating ram compressor comprising:
an outer case;
the preceding-stage rotor blade is arranged in the outer casing and is positioned at the inlet end of the outer casing;
the splitter ring is arranged in the outer casing, is positioned at the outlet end of the outer casing and forms a culvert runner with the outer casing; the inlet end of the culvert channel is over against the blade tip part of the preceding-stage rotor blade;
and the rear-stage rotor blade is arranged in the splitter ring and can rotate reversely relative to the front-stage rotor blade.
According to at least one embodiment of the present application, the counter-rotating punching compressor further includes:
and the plurality of culvert runner support plates are arranged in the culvert runners along the circumferential direction and supported between the outer casing and the splitter ring.
According to at least one embodiment of the present application, the counter-rotating punching compressor further includes:
the inner casing is arranged in the splitter ring, and an inner ring runner is formed between the inner casing and the splitter ring; the inlet end of the culvert runner is over against the rotor blade of the rear stage.
According to at least one embodiment of the present application, the counter-rotating punching compressor further includes:
and the plurality of inner culvert runner support plates are arranged between the splitter ring and the inner casing along the circumferential direction and supported between the splitter ring and the inner casing.
According to at least one embodiment of the present application, the counter-rotating punching compressor further includes:
and one end of the rear-stage driving shaft is connected with the rear-stage rotor blade, and the other end of the rear-stage driving shaft extends out of the inner casing.
According to at least one embodiment of the present application, the counter-rotating punching compressor further includes:
and the rear-stage support bearing is arranged between the inner casing and the rear-stage driving shaft.
According to at least one embodiment of the present application, in the counter-rotating ramjet compressor, the rear stage driving shaft is a hollow shaft;
further comprising:
and one end of the front-stage driving shaft is connected with the front-stage rotor blade, and the other end of the front-stage driving shaft extends into the rear-stage driving shaft.
According to at least one embodiment of the present application, in the counter-rotating punch compressor described above, the forward drive shaft has a forward bulging portion toward one end of the forward rotor blade;
the counter-rotating stamping gas compressor further comprises:
the outlet end of the outer support casing is butted with the inlet end of the outer casing;
the inner support casing is arranged in the outer support casing; the forward protruding part extends into the inner support casing;
the front-stage support bearing is arranged between the forward protruding part and the inner support casing;
and the supporting plates are arranged in the outer supporting casing and the inner supporting casing along the circumferential direction and are supported between the outer supporting casing and the inner supporting casing.
According to at least one embodiment of the present application, the counter-rotating punching compressor further includes:
the support rings are clamped on the support plates, an outer culvert air inlet channel is formed between each support ring and the outer support casing, and an inner culvert air inlet channel is formed between each support ring and the inner support casing; the outlet end of the bypass air inlet channel is opposite to the tip part of the preceding-stage rotor blade.
According to at least one embodiment of the present application, the counter-rotating punching compressor further includes:
the connecting ring is clamped on the preceding-stage rotor blade and forms an external culvert pressurizing flow channel with the external casing; the inlet end of the culvert pressurizing flow passage is aligned with the outlet end of the culvert air inlet passage, and the outlet end of the culvert pressurizing flow passage is aligned with the inlet end of the culvert flow passage.
Drawings
FIG. 1 is a schematic diagram of a counter-rotating ram compressor provided by an embodiment of the present application;
wherein:
1-an outer casing; 2-preceding stage rotor blades; 3-a shunt ring; 4-a rear stage rotor blade; 5-an outer duct support plate; 6-inner casing; 7-rear stage drive shaft; 8-rear stage support bearing; 9-outer support case; 10-supporting the casing; 11-a backing bearing; 12-a support plate; 13-a support ring; 14-a connecting ring; 15 front stage drive shaft; 16-an endoprosthesis plate;
a-an external culvert runner;
b-an internal culvert runner;
c-a culvert air inlet channel;
d-a culvert air inlet channel;
e-a culvert pressurizing flow passage.
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; further, the drawings are for illustrative purposes, and terms describing positional relationships are limited to illustrative illustrations only and are 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.
A counter-rotating ram compressor comprising:
an outer case 1;
the preceding-stage rotor blade 2 is arranged in the outer casing 1 and is positioned at the inlet end of the outer casing 1;
the splitter ring 3 is arranged in the outer casing 1, is positioned at the outlet end of the outer casing 1, and forms a bypass flow channel A with the outer casing; the inlet end of the culvert flow passage A is over against the blade tip part of the preceding-stage rotor blade 2;
the rear rotor blade 4 is provided in the splitter ring 3 and can rotate in the reverse direction with respect to the front rotor blade 2.
As for the counter-rotating punching compressor disclosed in the above embodiment, it can be understood by those skilled in the art that, in the airflow entering the inner channel of the outer casing 1, part of the airflow flowing through the tip of the preceding rotor blade 2 may enter the bypass channel a and be discharged through the bypass channel a, and part of the airflow flowing through the root of the preceding rotor blade 2 forms a high-speed airflow and flows into the splitter ring 3, and the following rotor blade 4 forms a high-pressure airflow under the counter-rotating punching action in the splitter ring 3, and the high-speed airflow is mixed with the airflow discharged from the bypass channel a after being discharged.
For the counter-rotating punching compressor disclosed in the above embodiment, it can be further understood by those skilled in the art that, based on the technical scheme of the counter-rotating punching compressor, a high pressure ratio is realized, and an outer culvert runner a is designed, the inlet end of which is over against the tip of the preceding stage rotor blade 2, so that a large amount of air flow can be led out, and thus the requirements of an aircraft engine on the high pressure ratio and the large flow rate of the compressor can be met.
In some optional embodiments, the counter-rotating punching compressor further includes:
a plurality of culvert runner extension plates 5 are arranged along the circumferential direction in the culvert runner A and supported between the outer casing 1 and the splitter ring 3.
In some optional embodiments, the counter-rotating punching compressor further includes:
the inner casing 6 is arranged in the splitter ring 3, and an inner ring runner B is formed between the inner casing and the splitter ring 3; the inlet end of the culvert flow passage B is over against the rear-stage rotor blade 4, and the high-pressure airflow formed by the counter-rotating stamping action of the rear-stage rotor blade 4 is discharged through the culvert flow passage B and mixed with the airflow discharged from the culvert flow passage A.
In some optional embodiments, the counter-rotating punching compressor further includes:
and a plurality of culvert flow passage support plates 16 are arranged between the splitter ring 3 and the inner casing 6 along the circumferential direction and supported between the splitter ring 3 and the inner casing 6.
In some optional embodiments, the counter-rotating punching compressor further includes:
one end of the rear-stage driving shaft 7 is connected with the rear-stage rotor blade 4 so as to drive the rear-stage rotor blade 4 to rotate, and the other end of the rear-stage driving shaft extends out of the inner casing 6 and does not interfere with the inner casing 6.
In some optional embodiments, the counter-rotating punching compressor further includes:
and a rear stage support bearing 8 provided between the inner casing 6 and the rear stage drive shaft 7 to support the rear stage drive shaft 7 within the inner casing 6.
In some alternative embodiments, in the above-mentioned counter-rotating ramjet compressor, the rear-stage drive shaft 7 is a hollow shaft;
further comprising:
the front drive shaft 15 has one end connected to the front rotor blade 2 to drive the front rotor blade 2 and the other end extending into the rear drive shaft 7 without interfering with the rear drive shaft 7.
In some alternative embodiments, in the counter-rotating punch compressor described above, the forward drive shaft 15 has a forward protruding portion toward the end of the forward rotor blade 2;
the counter-rotating stamping gas compressor further comprises:
an outlet end of the outer support casing 9 is butted with an inlet end of the outer casing 1 to support the outer casing 1;
an inner support casing 10 arranged inside the outer support casing 9; the forward protruding part extends into the inner support casing 10;
a front support bearing 11 provided between the forward protruding portion and the inner support casing 10 to support the front drive shaft 15 in the inner support casing 10, and not designed to support the front drive shaft 15 and the rear drive shaft 7 from each other to prevent generation of severe vibration;
and a plurality of support plates 12 which are circumferentially arranged in the outer support casing 9 and the inner support casing 10 and are supported between the outer support casing 9 and the inner support casing 10.
In some optional embodiments, the counter-rotating punching compressor further includes:
the support rings 13 are clamped on the support plates 12, a culvert air inlet channel C is formed between each support ring and the outer support casing 9, and a culvert air inlet channel D is formed between each support ring and the inner support casing 10; the outlet end of the bypass air inlet duct C is opposite to the tip part of the preceding-stage rotor blade 2.
For the counter-rotating punching compressor disclosed in the above embodiment, as can be understood by those skilled in the art, part of the air flow entering the flow channel of the outer support casing 9 flows into the bypass air inlet duct C, flows out through the bypass air inlet duct C, is pressurized through the tip part of the preceding rotor blade 2, enters the bypass flow channel a, flows into the bypass air inlet duct D, flows out through the bypass air inlet duct D, is pressurized through the root part of the preceding rotor blade 2 to form a high-speed air flow, and flows into the splitter ring 3, that is, the air flow is split in the outer support casing 9, so as to improve the working stability of the counter-rotating punching compressor.
In some optional embodiments, the counter-rotating punching compressor further includes:
the connecting ring 14 is clamped on the preceding-stage rotor blade 2 and forms a bypass pressurizing flow channel E with the outer casing 1; the inlet end of the culvert pressurizing flow passage E is aligned with the outlet end of the culvert air inlet channel C, and the outlet end of the culvert pressurizing flow passage E is aligned with the inlet end of the culvert flow passage A.
For the counter-rotating punching compressor disclosed in the above embodiment, it can be understood by those skilled in the art that the airflow flowing out through the bypass inlet duct C can flow into the bypass pressurizing flow passage E, and the top of the preceding rotor blade 2 is pressurized in the bypass pressurizing flow passage E and then flows into the bypass flow passage a, so as to ensure the flow splitting effect of the pressurized airflow flowing out through the bypass inlet duct D and flowing to the root of the preceding rotor blade 2, thereby improving the working stability of the counter-rotating punching compressor.
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 application 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 application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.
Claims (10)
1. A counter-rotating ram compressor, comprising:
an outer casing (1);
the front-stage rotor blade (2) is arranged in the outer casing (1) and is positioned at the inlet end of the outer casing (1);
the flow distribution ring (3) is arranged in the outer casing (1), is positioned at the outlet end of the outer casing (1), and forms a culvert flow passage (A) with the outer casing; the inlet end of the culvert runner (A) is over against the blade tip part of the preceding-stage rotor blade (2);
and the rear-stage rotor blade (4) is arranged in the splitter ring (3) and can rotate reversely relative to the front-stage rotor blade (2).
2. The counter-rotating ramjet compressor according to claim 1,
further comprising:
the outer casing is characterized by comprising a plurality of outer culvert runner support plates (5), wherein the outer culvert runner support plates (5) are arranged in the outer culvert runner (A) along the circumferential direction and supported between the outer casing (1) and the flow distribution ring (3).
3. The counter-rotating ramjet compressor according to claim 1,
further comprising:
the inner casing (6) is arranged in the splitter ring (3), and an inner ring runner (B) is formed between the inner casing and the splitter ring (3); the inlet end of the culvert flow passage (B) is over against the rear-stage rotor blade (4).
4. The counter-rotating ramjet compressor according to claim 3,
further comprising:
the inner casing support structure comprises a plurality of inner culvert runner support plates (16), wherein the inner culvert runner support plates are arranged between the splitter ring (3) and the inner casing (6) along the circumferential direction and supported between the splitter ring (3) and the inner casing (6).
5. The counter-rotating ramjet compressor according to claim 4,
further comprising:
and one end of the rear-stage driving shaft (7) is connected with the rear-stage rotor blade (4), and the other end of the rear-stage driving shaft extends out of the inner casing (6).
6. The counter-rotating ramjet compressor according to claim 5,
further comprising:
and a rear stage support bearing (8) provided between the inner casing (6) and the rear stage drive shaft (7).
7. The counter-rotating ramjet compressor according to claim 5,
the rear-stage driving shaft (7) is a hollow shaft;
further comprising:
and one end of the front-stage driving shaft (15) is connected with the front-stage rotor blade (2), and the other end of the front-stage driving shaft extends into the rear-stage driving shaft (7).
8. The counter-rotating ramjet compressor according to claim 7,
the front-stage driving shaft (15) is provided with a forward convex part towards one end of the front-stage rotor blade (2);
the counter-rotating ram compressor further comprises:
the outlet end of the outer supporting casing (9) is butted with the inlet end of the outer casing (1);
an inner support casing (10) arranged inside the outer support casing (9); the forward protruding part extends into the inner support casing (10);
a backing bearing (11) disposed between said forward nose and said inner support casing (10);
a plurality of support plates (12) disposed circumferentially within the outer support casing (9) and the inner support casing (10) and supported between the outer support casing (9) and the inner support casing (10).
9. The counter-rotating ramjet compressor according to claim 8,
further comprising:
the support rings (13) are clamped on the support plates (12), a culvert air inlet channel (C) is formed between each support ring and the outer support casing (9), and a culvert air inlet channel (D) is formed between each support ring and the inner support casing (10); the outlet end of the bypass air inlet channel (C) is opposite to the blade tip part of the preceding stage rotor blade (2).
10. The counter-rotating ramjet compressor according to claim 9,
further comprising:
the connecting ring (14) is clamped on the preceding-stage rotor blade (2) and forms a bypass pressurizing flow channel (E) with the outer casing (1); the inlet end of the culvert supercharging flow channel (E) is right opposite to the outlet end of the culvert air inlet channel (C), and the outlet end of the culvert supercharging flow channel (E) is right opposite to the inlet end of the culvert flow channel (A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111445878.2A CN114215788A (en) | 2021-11-30 | 2021-11-30 | Counter-rotating stamping gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111445878.2A CN114215788A (en) | 2021-11-30 | 2021-11-30 | Counter-rotating stamping gas compressor |
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| Publication Number | Publication Date |
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| CN114215788A true CN114215788A (en) | 2022-03-22 |
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| CN202111445878.2A Pending CN114215788A (en) | 2021-11-30 | 2021-11-30 | Counter-rotating stamping gas compressor |
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| CN109973224A (en) * | 2019-05-08 | 2019-07-05 | 中国航空发动机研究院 | Aircraft engine oil cooling system and method |
| CN112727635A (en) * | 2020-12-31 | 2021-04-30 | 中国航空发动机研究院 | Double-culvert engine |
| CN214787743U (en) * | 2021-03-19 | 2021-11-19 | 袁晓冬 | Jet engine with contra-rotating combined rotor |
| CN113565649A (en) * | 2021-08-16 | 2021-10-29 | 中国科学院工程热物理研究所 | Three-duct ACE engine with Flade fan and core machine driving fan stages |
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