CN114233685A - Four-stage compressor casing structure - Google Patents
Four-stage compressor casing structure Download PDFInfo
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- CN114233685A CN114233685A CN202111573202.1A CN202111573202A CN114233685A CN 114233685 A CN114233685 A CN 114233685A CN 202111573202 A CN202111573202 A CN 202111573202A CN 114233685 A CN114233685 A CN 114233685A
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- 238000009413 insulation Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 13
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
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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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application belongs to the field of aero-engine compressor casings, and relates to a four-stage compressor casing structure which comprises a front casing assembly and a rear casing assembly, wherein the rear casing assembly comprises a secondary casing component, a tertiary casing component, a four-stage casing component, an extension casing and a bearing ring; the extension case is an outer case arranged in a whole ring, the secondary case component, the tertiary case component and the quaternary case component are inner cases sequentially arranged from front to back, the annular parts of the secondary case component, the tertiary case component and the quaternary case component are all whole-ring cases and are positioned between adjacent cases of the inner cases and connected through bolts, the inner cases are connected with the outer cases through bolts, and the extension case is connected with the front case component through bolts, so that the annular parts of the inner cases and the outer cases can be set into the whole-ring cases.
Description
Technical Field
The application belongs to the field of aero-engine compressor casings, and particularly relates to a four-stage compressor casing structure.
Background
With the continuous improvement of thrust-weight ratio of military engines, the working environment of a high-pressure compressor is more and more severe, and in order to keep small and uniform blade tip gaps of the compressor, a casing of the high-pressure compressor is divided into a front section and a rear section, wherein the front section is called a front casing, the front casing is a split structure, the rear section is called a rear casing, the rear casing is a double-layer structure, a pneumatic flow channel is provided for the inner casing, and the outer casing is used for force transmission.
The high-pressure compressor of the high thrust-weight ratio engine gradually has the characteristics of few stages, short axial length, small rotor and stator blade spacing, large interstage temperature gradient, high outlet temperature and more air-entraining positions, and the conventional high-pressure compressor casing structure is difficult to meet the functional requirements and seriously restricts the engineering application of the high-pressure compressor casing of the high thrust-weight ratio engine.
The existing high thrust-weight ratio high-pressure compressor casing consists of a front casing and a rear casing, and is divided into two structural forms according to the structure of the rear casing: 1. the inner layer casing is of a split structure, and 2, the inner layer casing is of an integral ring structure. These two structural forms have the following technical disadvantages:
the inner casing with the split structure is easy to generate elliptical deformation in the working process, so that the circumferential distribution of the rear stage blade tip clearance of the high-pressure compressor is uneven, the efficiency of the compressor is influenced, and the performance of an engine is attenuated due to long-time working.
The inner-layer casing of the whole ring structure is axially divided into a plurality of sections, and each section of the inner-layer casing and each section of the outer-layer casing are supported by a cantilever.
Therefore, how to ensure that the high-pressure compressor casing does not generate elliptical deformation, does not generate buckling deformation, and is reliable in centering is a problem to be solved.
Disclosure of Invention
The application aims at providing a four-stage compressor casing structure to solve the problem that a compressor casing in the prior art cannot simultaneously have the effects of no elliptical deformation, no buckling deformation and reliable centering.
The technical scheme of the application is as follows: the utility model provides a four-stage compressor machine casket structure, includes preceding casket sub-assembly and back casket sub-assembly, its characterized in that: the rear casing assembly comprises a secondary casing component, a tertiary casing component, a quaternary casing component, an extension casing and a bearing ring; the extension casing is an outer casing arranged in a whole ring, the secondary casing component, the tertiary casing component and the quaternary casing component are inner casings sequentially arranged from front to back, and the annular parts of the secondary casing component, the tertiary casing component and the quaternary casing component are all whole-ring casings; one end of the extension casing is connected with the front casing component and the secondary casing component through bolts, and the other end of the extension casing is connected with the bearing ring through bolts; the secondary casing assembly is connected with the tertiary casing assembly through bolts, the tertiary casing assembly is connected with the quaternary casing assembly and the force bearing ring through bolts, and the tertiary casing assembly is connected with the extension casing in a sealing manner; the four-stage casing assembly is connected with a bearing ring bolt; a first annular gas collecting cavity is formed among the extension casing, the secondary casing component and the tertiary casing component, and a second annular gas collecting cavity is formed among the extension casing, the tertiary casing component, the quaternary casing component and the bearing ring; two air guide holes respectively communicated with the first annular air collecting cavity and the second annular air collecting cavity are formed in the casing, and the first annular air collecting cavity and the second annular air collecting cavity are all whole annular cavities with the parts except the positions of the air guide holes being completely closed.
Preferably, the secondary casing assembly comprises a secondary rotor casing, a secondary stator casing and a secondary stator fan-shaped section, the secondary rotor casing and the secondary stator casing are both integral ring casings, and the secondary stator fan-shaped section is connected between the secondary rotor casing and the secondary stator casing; the cross section of the secondary rotor casing is of an inverted T-shaped structure; one end of the secondary stator casing is connected with one side of the secondary rotor casing, which is close to the extension casing, through a bolt, and the other end of the secondary stator casing is connected with the third-stage casing component through a bolt.
Preferably, the three-stage casing assembly comprises a three-stage rotor casing, a three-stage stator casing and a three-stage stator fan-shaped section, the three-stage rotor casing and the three-stage stator casing are both integral ring casings, and the three-stage stator fan-shaped section is connected between the three-stage rotor casing and the three-stage stator casing;
the cross section of the third-stage rotor casing is of an inverted T-shaped structure, one side, close to the extending casing, of the third-stage rotor casing is connected with the third-stage stator casing and the second-stage stator casing through bolts, the end, close to one side of the extending casing, of the third-stage rotor casing is connected with the extending casing in a sealing mode, and the third-stage stator casing is connected with the fourth-stage casing component through bolts.
Preferably, the four-stage casing assembly comprises a four-stage rotor casing, and the four-stage rotor casing is connected with a three-stage stator casing and a bearing ring through bolts.
Preferably, a circular seam connected with the air guide hole in the first-stage annular air collecting cavity is formed between the third-stage rotor casing and the second-stage stator fan-shaped section, and a circular seam connected with the air guide hole in the second-stage annular air collecting cavity is formed between the fourth-stage rotor casing and the third-stage rotor fan-shaped section.
Preferably, a W sealing ring is connected between the three-stage rotor casing and the extension casing.
Preferably, a heat insulation sleeve is arranged between the bearing ring and the extension casing, the heat insulation sleeve is annular and is coaxially arranged with the bearing ring, the heat insulation sleeve is of a segmented structure, and each segment of the heat insulation sleeve is connected with the bearing ring through a bolt.
Preferably, the front casing assembly comprises a front section casing, a zero-level casing component and a first-level casing component; the zero-level casing assembly comprises a zero-level stator blade connected to the inner side of the front-stage casing, a zero-level inner ring connected with the zero-level stator blade, a zero-level rocker arm connected to the outer side of the front-stage casing and a zero-level cascade moving ring connected with the zero-level rocker arm; the first-stage casing assembly comprises a first-stage stator blade connected to the inner side of the front-stage casing, a first-stage inner ring connected with the first-stage stator blade, a first-stage rocker arm connected to the outer side of the front-stage casing, a cascade rotating ring connected with the first-stage rocker arm, and a first-stage rotor outer ring block connected to the inner side of the front-stage casing.
Preferably, the front-section casing is provided with longitudinal mounting edges at opposite opening positions, the longitudinal mounting edges are provided with bolt holes at the edge positions, and the two sections of the front-section casing are connected through the bolt holes in the longitudinal mounting edges by bolts.
The utility model provides a four-stage compressor machine casket structure, including preceding machine casket sub-assembly and back machine casket sub-assembly, back machine casket sub-assembly includes second grade machine casket subassembly, tertiary machine casket subassembly, four-stage machine casket subassembly, extension machine casket and bearing ring; the extension case is an outer case arranged in a whole ring, the secondary case component, the tertiary case component and the quaternary case component are inner cases sequentially arranged from front to back, the annular parts of the secondary case component, the tertiary case component and the quaternary case component are all whole-ring cases and are positioned between adjacent cases of the inner cases and connected through bolts, the inner cases are connected with the outer cases through bolts, and the extension case is connected with the front case component through bolts, so that the annular parts of the inner cases and the outer cases can be set into the whole-ring cases.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
FIG. 1 is a schematic diagram of the overall structure of the present application;
FIG. 2 is a schematic illustration of a barrel assembly according to the present application;
FIG. 3 is a schematic view of the structure of the air-introducing holes and the circular seams of the present application;
fig. 4 is a schematic view of a longitudinal mounting edge structure of a front casing according to the present application.
1. A front-section case; 2. a zero-order rocker arm; 3. a zero-cascade moving ring; 4. a primary rotor outer ring block; 5. a zero-order stator vane; 6. a zero-order inner ring; 7. a cascade of moving rings; 8. a primary rocker arm; 9. a first stage stator vane; 10. a first-stage inner ring; 11. a secondary rotor case; 12. a secondary stator sector section; 13. a secondary stator case; 14. an extension case; 15. a three-stage rotor case; 16. a third-stage stator sector section; 17. a third-stage stator casing; 18. a four-stage rotor casing; 19. a force bearing ring; 20. w a sealing ring; 21. a heat insulating sleeve; 22. an air vent; 23. performing circular sewing; 24. a primary annular gas collection chamber; 25. a secondary annular gas collection cavity; 26. and (5) longitudinally installing the edges.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
A four-stage compressor casing structure is shown in figures 1 and 2 and comprises a front casing assembly and a rear casing assembly, wherein the front casing assembly and the rear casing assembly comprise a secondary casing component, a tertiary casing component, a four-stage casing component, an extension casing 14 and a bearing ring 19; the extension casing 14 is an outer casing arranged in a whole ring, the secondary casing component, the tertiary casing component and the quaternary casing component are inner casings arranged from front to back in sequence, and the annular parts of the casings of the secondary casing component, the tertiary casing component and the quaternary casing component are all whole-ring casings; one end of the extension casing 14 is connected with the front casing component and the secondary casing component through bolts, and the other end of the extension casing 14 is connected with the bearing ring 19 through bolts; the second-level cartridge receiver component is connected with the third-level cartridge receiver component through bolts, the third-level cartridge receiver component is connected with the fourth-level cartridge receiver component and the force bearing ring 19 through bolts, and the third-level cartridge receiver component is connected with the extension cartridge receiver 14 in a sealing mode; the four-stage casing component is connected with a force bearing ring 19 through bolts; a first annular gas collecting cavity is formed among the extension casing 14, the secondary casing component and the tertiary casing component, and a second annular gas collecting cavity is formed among the extension casing 14, the tertiary casing component, the quaternary casing component and the bearing ring 19; two air guide holes 22 respectively communicated with the first annular air collecting cavity and the second annular air collecting cavity are formed in the casing, and the first annular air collecting cavity and the second annular air collecting cavity are all whole annular cavities with the parts except the positions of the air guide holes 22 being completely closed.
The inner-layer casing is arranged into the inner-layer casing and connected into a whole, the inner-layer casing is connected with the outer-layer casing through bolts, the annular parts of the inner-layer casing and the outer-layer casing can be arranged into the whole-ring casing, the whole-ring casing structure ensures that the inner-layer casing cannot be deformed in an elliptical manner, different casing assemblies are connected through bolts instead of being divided into multiple sections, and therefore the problems of warping deformation and inaccurate centering of the inner-layer casing cannot occur. By connecting the extension case 14 to the front case assembly only by bolts, the rear case assembly does not need to be positioned by the front case assembly, and the front case can be detached separately, thereby solving the problem of subsequent maintenance of the case.
And meanwhile, a first annular gas collecting cavity and a second annular gas collecting cavity which are mutually closed can be formed, and different types of air flows can be stored in the two gas collecting cavities so as to provide different air entraining requirements of the engine.
Preferably, the secondary casing assembly comprises a secondary rotor casing 11, a secondary stator casing 13 and a secondary stator segment 12, wherein the secondary rotor casing 11 and the secondary stator casing 13 are annular parts of the casing, and the secondary stator segment 12 is used for being connected with an internal structure of the casing. The secondary rotor casing 11 and the secondary stator casing 13 are both integral ring casings, and the secondary stator fan-shaped section 12 is connected between the secondary rotor casing 11 and the secondary stator casing 13; the cross section of the secondary rotor casing 11 is of an inverted T-shaped structure; one end of the secondary stator casing 13 is connected with one side of the secondary rotor casing 11 close to the extension casing 14 through a bolt, and the other end of the secondary stator casing is connected with the third-stage casing component through a bolt.
The secondary rotor case 11, the secondary stator case 13, the extension case 14 and the tertiary case subassembly enclose into a first annular gas collecting cavity, and the secondary rotor case 11 is the more stable laminating of the case structure that can be with both sides for the structure of falling T shape, has improved the support intensity and the sealing performance of case.
Preferably, the three-stage casing assembly comprises a three-stage rotor casing 15, a three-stage stator casing 17 and a three-stage stator fan-shaped section 16, wherein the three-stage rotor casing 15 and the three-stage stator casing 17 are all integral ring casings, and the three-stage stator fan-shaped section 16 is connected between the three-stage rotor casing 15 and the three-stage stator casing 17;
the cross section of the third-stage rotor casing 15 is of an inverted T-shaped structure, one side, close to the extension casing 14, of the third-stage rotor casing 15 is connected with the third-stage stator casing 17 and the second-stage stator casing 13 through bolts, the end, close to the extension casing 14, of the third-stage rotor casing 15 is connected with the extension casing 14 in a sealing mode, and the third-stage stator casing 17 is connected with the fourth-stage casing assembly through bolts.
The third-stage rotor casing 15, the third-stage stator casing 17, the fourth-stage rotor casing 18, the extension casing 14 and the force bearing ring 19 form a second annular gas collecting cavity, the third-stage rotor casing 15 is of an inverted T-shaped structure and can be attached to the casings on two sides more stably, and the supporting strength and the sealing performance of the casings are improved.
Preferably, the four-stage casing assembly comprises a four-stage rotor casing 18, and the four-stage rotor casing 18 is in bolted connection with a three-stage stator casing 17 and a bearing ring 19.
The secondary rotor casing 11, the tertiary rotor casing 15 and the quaternary rotor casing 18 are all of a whole-ring structure, so that the rigidity of the casings is improved, and the circumferential uniformity of blade tip gaps is improved.
As shown in fig. 2 and 3, preferably, an annular seam 23 connected with the air guide hole 22 on the first-stage annular air collection cavity 24 is formed between the third-stage rotor casing 15 and the second-stage stator segment 12, an annular seam 23 connected with the air guide hole 22 on the second-stage annular air collection cavity 25 is formed between the fourth-stage rotor casing 18 and the third-stage rotor segment, and the annular seam 23 is arranged so that the pressure loss of the air guided by the first-stage annular air collection cavity 24 and the second-stage annular air collection cavity 25 is reduced.
Preferably, a W-sealing ring 20 is connected between the tertiary rotor casing 15 and the extension casing 14, and the W-sealing ring 20 can ensure the sealing performance between the primary annular gas collecting cavity 24 and the secondary annular gas collecting cavity 25.
Preferably, a heat insulation sleeve 21 is arranged between the bearing ring 19 and the extension casing 14, the heat insulation sleeve 21 is annular and is coaxially arranged with the bearing ring 19, the heat insulation sleeve 21 is of a segmented structure, each segment of the heat insulation sleeve 21 is in bolted connection with the bearing ring 19, and the heat insulation sleeves 21 arranged in multiple segments can reduce the heating effect of air entraining on the bearing ring 19, so that the stability of bolted connection is ensured.
As shown in fig. 1, preferably, the front casing assembly includes a front casing 1, a zero-order casing component, and a first-order casing component; the front-section case 1 is of a split structure, the two parts of the front-section case 1 are connected with the extension case 14 through bolts, and the zero-level case component comprises a zero-level stator blade 5 connected to the inner side of the front-section case 1, a zero-level inner ring 6 connected with the zero-level stator blade 5, a zero-level rocker arm 2 connected to the outer side of the front-section case 1 and a zero-level linkage ring 3 connected with the zero-level rocker arm 2; the primary casing component comprises a primary stator blade 9 connected to the inner side of the front casing 1, a primary inner ring 10 connected with the primary stator blade 9, a primary rocker arm 8 connected to the outer side of the front casing 1, a primary link ring 7 connected with the primary rocker arm 8, and a primary rotor outer ring block 4 connected to the inner side of the front casing 1.
The interface of the front and rear case assemblies is located behind the primary case assembly, increasing the axial length and diameter of the rear case assembly and increasing the structural rigidity of the entire case.
As shown in fig. 1 and 4, preferably, a longitudinal mounting edge 26 is provided at a split position of the front section casing 1, a bolt hole is provided along an edge position of the longitudinal mounting edge 26, and the two sections of the front section casing 1 are bolted through the bolt hole on the longitudinal mounting edge 26. The two split casings are connected through bolts by arranging the longitudinal installation edges 26, so that the fixing is stable.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a four-stage compressor machine casket structure, includes preceding casket sub-assembly and back casket sub-assembly, its characterized in that: the rear casing assembly comprises a secondary casing component, a tertiary casing component, a quaternary casing component, an extension casing (14) and a bearing ring (19);
the extension casing (14) is an outer casing arranged in a whole ring, the secondary casing component, the tertiary casing component and the quaternary casing component are inner casings sequentially arranged from front to back, and the annular parts of the secondary casing component, the tertiary casing component and the quaternary casing component are all whole-ring casings;
one end of the extension casing (14) is connected with the front casing component and the secondary casing component through bolts, and the other end of the extension casing (14) is connected with the bearing ring (19) through bolts; the secondary casing component is in bolted connection with the tertiary casing component, the tertiary casing component is in bolted connection with the quaternary casing component and the bearing ring (19), and the tertiary casing component is in sealed connection with the extension casing (14); the four-stage casing component is connected with a bearing ring (19) through a bolt;
a first annular gas collecting cavity is formed among the extension casing (14), the secondary casing component and the tertiary casing component, and a second annular gas collecting cavity is formed among the extension casing (14), the tertiary casing component, the quaternary casing component and the bearing ring (19);
two air guide holes (22) respectively communicated with the first annular air collecting cavity and the second annular air collecting cavity are formed in the casing, and the first annular air collecting cavity and the second annular air collecting cavity are all whole annular cavities with the positions except the air guide holes (22) and the other parts being completely closed.
2. The four-stage compressor case structure of claim 1, wherein: the secondary casing assembly comprises a secondary rotor casing (11), a secondary stator casing (13) and a secondary stator sector section (12), the secondary rotor casing (11) and the secondary stator casing (13) are both integral ring casings, and the secondary stator sector section (12) is connected between the secondary rotor casing (11) and the secondary stator casing (13);
the cross section of the secondary rotor casing (11) is of an inverted T-shaped structure; one end of the secondary stator casing (13) is in bolted connection with one side of the secondary rotor casing (11) close to the extension casing (14), and the other end of the secondary stator casing is in bolted connection with the third-stage casing assembly.
3. The four-stage compressor case structure of claim 2, wherein: the three-stage casing assembly comprises a three-stage rotor casing (15), a three-stage stator casing (17) and a three-stage stator fan-shaped section (16), the three-stage rotor casing (15) and the three-stage stator casing (17) are all integral ring casings, and the three-stage stator fan-shaped section (16) is connected between the three-stage rotor casing (15) and the three-stage stator casing (17);
the cross section of tertiary rotor machine casket (15) personally submits the structure of falling T shape, tertiary rotor machine casket (15) are close to one side and tertiary stator machine casket (17), second grade stator machine casket (13) bolted connection that extend machine casket (14), tertiary rotor machine casket (15) are close to the tip that extends machine casket (14) one side and extend machine casket (14) sealing connection, tertiary stator machine casket (17) and level four machine casket subassembly bolted connection.
4. The four-stage compressor case structure of claim 3, wherein: the four-stage casing assembly comprises a four-stage rotor casing (18), and the four-stage rotor casing (18) is in bolt connection with a three-stage stator casing (17) and a bearing ring (19).
5. The four-stage compressor case structure of claim 4, wherein: and a circular seam (23) connected with an air guide hole (22) in a first-stage annular air collection cavity (24) is formed between the third-stage rotor casing (15) and the second-stage stator fan-shaped section (12), and a circular seam (23) connected with an air guide hole (22) in a second-stage annular air collection cavity (25) is formed between the fourth-stage rotor casing (18) and the third-stage rotor fan-shaped section.
6. The four-stage compressor case structure of claim 3, wherein: and a W sealing ring (20) is connected between the three-stage rotor casing (15) and the extension casing (14).
7. The four-stage compressor case structure of claim 1, wherein: a heat insulation sleeve (21) is arranged between the bearing ring (19) and the extension casing (14), the heat insulation sleeve (21) is annular and is coaxially arranged with the bearing ring (19), the heat insulation sleeve (21) is of a segmented structure, and each segment of the heat insulation sleeve (21) is in bolt connection with the bearing ring (19).
8. The four-stage compressor case structure of claim 1, wherein: the front casing assembly comprises a front casing (1), a zero-level casing component and a first-level casing component;
the zero-order type engine casing assembly comprises a front-stage engine casing (1), a zero-order inner ring (6), a zero-order rocker arm (2) and a zero-order cascade moving ring (3), wherein the front-stage engine casing (1) is of a split structure, the two front-stage engine casings (1) are in bolted connection with an extension engine casing (14), and the zero-order engine casing assembly comprises a zero-order stator blade (5) connected to the inner side of the front-stage engine casing (1), a zero-order inner ring (6) connected with the zero-order stator blade (5), a zero-order rocker arm (2) connected to the outer side of the front-stage engine casing (1), and a zero-order cascade moving ring (3) connected with the zero-order rocker arm (2);
the primary casing assembly comprises a primary stator blade (9) connected to the inner side of the front section casing (1), a primary inner ring (10) connected with the primary stator blade (9), a primary rocker arm (8) connected to the outer side of the front section casing (1), a cascade rotating ring (7) connected with the primary rocker arm (8), and a primary rotor outer ring block (4) connected to the inner side of the front section casing (1).
9. The four-stage compressor case structure of claim 8, wherein: the split-open position of the front section casing (1) is provided with a longitudinal mounting edge (26), bolt holes are formed in the longitudinal mounting edge (26) along the edge position of the longitudinal mounting edge, and the two sections of the front section casing (1) are connected through the bolt holes in the longitudinal mounting edge (26) through bolts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111573202.1A CN114233685B (en) | 2021-12-21 | 2021-12-21 | Four-stage compressor casing structure |
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| CN202111573202.1A CN114233685B (en) | 2021-12-21 | 2021-12-21 | Four-stage compressor casing structure |
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| CN114233685B CN114233685B (en) | 2024-10-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922858A (en) * | 2022-07-21 | 2022-08-19 | 成都中科翼能科技有限公司 | Stator structure of low-pressure compressor of gas turbine and assembling method thereof |
| CN115234518A (en) * | 2022-08-05 | 2022-10-25 | 中国航发贵阳发动机设计研究所 | Composite-function compressor casing with gas collection cavity structure |
| CN118855554A (en) * | 2024-09-26 | 2024-10-29 | 成都中科翼能科技有限公司 | A segmented power turbine casing of a gas turbine and an assembly method thereof |
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| CN112065774A (en) * | 2020-09-15 | 2020-12-11 | 中国航发沈阳发动机研究所 | Cartridge receiver structure and rotor-stator structure thereof |
| CN112628206A (en) * | 2020-12-15 | 2021-04-09 | 中国航发沈阳发动机研究所 | Air entraining structure of air compressor |
| CN112628207A (en) * | 2020-12-15 | 2021-04-09 | 中国航发沈阳发动机研究所 | Air-entraining structure of air compressor |
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| CN114922858A (en) * | 2022-07-21 | 2022-08-19 | 成都中科翼能科技有限公司 | Stator structure of low-pressure compressor of gas turbine and assembling method thereof |
| CN114922858B (en) * | 2022-07-21 | 2022-09-30 | 成都中科翼能科技有限公司 | Stator structure of low-pressure compressor of gas turbine and assembling method thereof |
| CN115234518A (en) * | 2022-08-05 | 2022-10-25 | 中国航发贵阳发动机设计研究所 | Composite-function compressor casing with gas collection cavity structure |
| CN118855554A (en) * | 2024-09-26 | 2024-10-29 | 成都中科翼能科技有限公司 | A segmented power turbine casing of a gas turbine and an assembly method thereof |
| CN118855554B (en) * | 2024-09-26 | 2024-12-03 | 成都中科翼能科技有限公司 | Sectional power turbine casing of gas turbine and assembling method |
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