CN114233685B - Four-stage compressor casing structure - Google Patents
Four-stage compressor casing structure Download PDFInfo
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- CN114233685B CN114233685B CN202111573202.1A CN202111573202A CN114233685B CN 114233685 B CN114233685 B CN 114233685B CN 202111573202 A CN202111573202 A CN 202111573202A CN 114233685 B CN114233685 B CN 114233685B
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- 238000007789 sealing Methods 0.000 claims description 14
- 108010001267 Protein Subunits Proteins 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 3
- 238000009413 insulation Methods 0.000 description 4
- 230000004323 axial length Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- 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 cases, and relates to a four-stage compressor case structure, which comprises a front case assembly and a rear case assembly, wherein the rear case assembly comprises a second-stage case assembly, a third-stage case assembly, a four-stage case assembly, an extension case and a bearing ring; the extension casing is the outer casing that the whole ring set up, second grade casing subassembly, tertiary casing subassembly, fourth grade casing subassembly are preceding to the inlayer casing that sets gradually after to, second grade casing subassembly, tertiary casing subassembly, fourth grade casing subassembly's casing annular part is the whole ring casing to be located bolted connection between the adjacent casing of inlayer casing, inlayer casing and outer casing bolted connection, extension casing and preceding casing sub-unit bolt connection, make the casing annular part of inlayer casing and outer casing all can set up to the whole ring casing, this design has guaranteed that the inlayer casing can not take place elliptical deformation, can not take place warp deformation, centering inaccurate problem simultaneously.
Description
Technical Field
The application belongs to the field of aero-engine compressor cases, and particularly relates to a four-stage compressor case structure.
Background
With the continuous improvement of thrust-weight ratio of a military engine, the working environment of a high-pressure compressor is more and more severe, in order to keep small and uniform blade tip clearance of the compressor, a high-pressure compressor casing is divided into a front casing and a rear casing, the front casing is of a split structure, the rear casing is of a double-layer structure, an inner casing provides a pneumatic runner, and an outer casing is used for transferring force.
The high thrust-weight ratio engine high-pressure compressor gradually has the characteristics of few stages, short axial length, small rotor-stator blade spacing, large interstage temperature gradient, high outlet temperature and more air-entraining positions, the existing high-pressure compressor casing structure is difficult to meet the functional requirements, and the engineering application of the high thrust-weight ratio engine high-pressure compressor casing is severely restricted.
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 rear casing structure: 1. the inner-layer casing is of a split structure, and the inner-layer casing is of a full-ring structure. These two forms have the following technical disadvantages:
The inner-layer casing with the split structure is easy to generate elliptical deformation in the working process, so that gaps of rear-stage blade tips of the high-pressure compressor are distributed unevenly in the circumferential direction, the efficiency of the compressor is affected, and the performance of the engine is attenuated due to long-time working.
The inner casing of the whole ring structure is axially divided into a plurality of sections, cantilever supports are adopted between each section of inner casing and the outer casing, and the casing of the structure has two defects, namely, the inner casing is easy to warp and deform, the blade tip clearance is not easy to control, and the inner casing and the outer casing are simultaneously positioned in the front casing of the compressor, so that the front casing cannot be independently assembled and disassembled, and the reliable centering and subsequent maintenance of the casing during the operation of the compressor are not easy to be facilitated.
Therefore, the problem to be solved is how to ensure that the high-pressure compressor casing cannot generate elliptical deformation, and meanwhile, the casing cannot warp deformation and is reliable in centering.
Disclosure of Invention
The application aims to provide a four-stage compressor casing structure, which aims to solve the problem that in the prior art, a compressor casing 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 receiver structure, includes preceding receiver sub-unit and back receiver sub-unit, its characterized in that: the rear case assembly comprises a second-level case assembly, a third-level case assembly, a fourth-level case assembly, an extension case and a bearing ring; the extension casing is an outer casing arranged in a whole ring, the second-stage casing component, the third-stage casing component and the fourth-stage casing component are inner casings arranged in sequence from front to back, and the casing annular parts of the second-stage casing component, the third-stage casing component and the fourth-stage casing component are whole ring casings; one end of the extension casing is connected with the front 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 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 the bearing ring through bolts; a first annular gas collecting cavity is formed among the extension casing, the second-stage casing component and the third-stage casing component, and a second annular gas collecting cavity is formed among the extension casing, the third-stage casing component, the fourth-stage casing component and the bearing ring; two air-entraining holes which are 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 closed whole annular cavities except the air-entraining holes.
Preferably, the secondary casing assembly comprises a secondary rotor casing, a secondary stator casing and a secondary stator sector section, wherein the secondary rotor casing and the secondary stator casing are full-ring casings, and the secondary stator sector section is connected between the secondary rotor casing and the secondary stator casing; the cross section of the secondary rotor case 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 bolts, and the other end of the secondary stator casing is connected with the tertiary casing component through bolts.
Preferably, the three-stage casing assembly comprises a three-stage rotor casing, a three-stage stator casing and a three-stage stator sector section, wherein the three-stage rotor casing and the three-stage stator casing are all full-ring casings, and the three-stage stator sector section is connected between the three-stage rotor casing and the three-stage stator casing;
the cross section of tertiary rotor receiver is in an inverted T-shaped structure, one side of the tertiary rotor receiver, which is close to the extension receiver, is connected with a tertiary stator receiver and a secondary stator receiver through bolts, the end part of the tertiary rotor receiver, which is close to one side of the extension receiver, is connected with the extension receiver in a sealing way, and the tertiary stator receiver is connected with a quaternary receiver 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 bleed holes on the primary annular air collecting cavity is formed between the tertiary rotor casing and the secondary stator fan-shaped section, and a circular seam connected with the air bleed holes on the secondary annular air collecting cavity is formed between the quaternary rotor casing and the tertiary rotor fan-shaped section.
Preferably, a W sealing ring is connected between the tertiary 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 heat insulation sleeve is connected with the bearing ring through bolts.
Preferably, the front casing assembly comprises a front section casing, a zero-order casing component and a primary casing component; the front-section casing is of a split structure, two parts of the front-section casing are connected with the extension casing through bolts, and the zero-level casing assembly comprises a zero-level stator blade connected to the inner side of the front-section casing, a zero-level inner ring connected with the zero-level stator blade, a zero-level rocker connected to the outer side of the front-section casing and a zero-level cascade movable ring connected with the zero-level rocker; the primary casing assembly comprises a primary stator blade connected to the inner side of the front-section casing, a primary inner ring connected with the primary stator blade, a primary rocker arm connected to the outer side of the front-section casing, a primary linkage ring connected with the primary rocker arm, and a primary rotor outer ring block connected to the inner side of the front-section casing.
Preferably, the split position of the front-section casing is provided with a longitudinal mounting edge, the edge position of the longitudinal mounting edge is provided with a bolt hole, and the two sections of the front-section casing are connected through the bolt hole on the longitudinal mounting edge by bolts.
The application discloses a four-stage compressor casing structure, which comprises a front casing assembly and a rear casing assembly, wherein the rear casing assembly comprises a second-stage casing component, a third-stage casing component, a fourth-stage casing component, an extension casing and a bearing ring; the extension casing is the outer casing that the whole ring set up, second grade casing subassembly, tertiary casing subassembly, fourth grade casing subassembly are preceding to the inlayer casing that sets gradually after to, second grade casing subassembly, tertiary casing subassembly, fourth grade casing subassembly's casing annular part is the whole ring casing to be located bolted connection between the adjacent casing of inlayer casing, inlayer casing and outer casing bolted connection, extension casing and preceding casing sub-unit bolt connection, make the casing annular part of inlayer casing and outer casing all can set up to the whole ring casing, this design has guaranteed that the inlayer casing can not take place elliptical deformation, can not take place warp deformation, centering inaccurate problem simultaneously.
Drawings
In order to more clearly illustrate the technical solution provided by the present application, the following description will briefly refer to the accompanying drawings. It will be apparent that the figures described below are merely some embodiments of the application.
FIG. 1 is a schematic diagram of the overall structure of the present application;
FIG. 2 is a schematic view of a rear case assembly according to the present application;
FIG. 3 is a schematic view of the structure of the air vent and circumferential seam of the present application;
fig. 4 is a schematic view of a longitudinal mounting edge structure of a front-stage casing according to the present application.
1. A front-stage casing; 2. zero-order rocker arm; 3. zero cascading movable ring; 4. an outer ring block of the primary rotor; 5. zero-order stator vanes; 6. a zero-order inner ring; 7. a cascade ring; 8. a primary rocker arm; 9. primary stator vanes; 10. a primary inner ring; 11. a secondary rotor case; 12. a second-stage stator segment; 13. a secondary stator case; 14. extending the casing; 15. a three-stage rotor casing; 16. a three-stage stator sector; 17. three-stage stator case; 18. a four-stage rotor casing; 19. a force-bearing ring; 20. w is a sealing ring; 21. a heat insulating sleeve; 22. an air vent; 23. circular seams; 24. a first-stage annular gas collection cavity; 25. a secondary annular gas collection cavity; 26. and a longitudinal mounting edge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application become more apparent, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application.
The four-stage compressor casing structure comprises a front casing assembly and a rear casing assembly, as shown in fig. 1 and 2, wherein the front casing assembly and the rear casing assembly comprise a second-stage casing component, a third-stage 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 second-stage casing component, the third-stage casing component and the fourth-stage casing component are inner casings arranged in sequence from front to back, and the casing annular parts of the second-stage casing component, the third-stage casing component and the fourth-stage casing component are 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 is connected with the bearing ring 19 through bolts; the second-stage casing assembly is connected with the third-stage casing assembly through bolts, the third-stage casing assembly is connected with the fourth-stage casing assembly and the bearing ring 19 through bolts, and the third-stage casing assembly is connected with the extension casing 14 in a sealing manner; the four-stage casing component is connected with the bearing ring 19 through bolts; a first annular gas collecting cavity is formed among the extension casing 14, the second-stage casing component and the third-stage casing component, and a second annular gas collecting cavity is formed among the extension casing 14, the third-stage casing component, the fourth-stage casing component and the bearing ring 19; two air-entraining 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 closed whole annular cavities except for the positions of the air-entraining holes 22.
Through setting up second grade cartridge receiver subassembly, tertiary cartridge receiver subassembly, fourth grade cartridge receiver subassembly into inlayer cartridge receiver and interconnect become wholly, inlayer cartridge receiver and outer cartridge receiver bolted connection for the cartridge receiver annular portion of inlayer cartridge receiver and outer cartridge receiver homoenergetic is set to the full-circle cartridge receiver, and the cartridge receiver structure of full-circle has guaranteed that the inlayer cartridge receiver can not take place elliptical deformation, and the cartridge receiver subassembly of difference passes through bolted connection, and does not separate into the multistage, and warp deformation can not take place for the inlayer cartridge receiver like this, centering inaccurate problem. By bolting the extension casing 14 with the front casing assembly only, the rear casing assembly need not be positioned by the front casing assembly, and the front casing can be disassembled alone, solving the problem of subsequent maintenance of the casing.
Simultaneously, a first annular gas collection cavity and a second annular gas collection cavity which are mutually closed can be formed, and different types of gas flows can be stored in the two gas collection 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 sector section 12, wherein the secondary rotor casing 11 and the secondary stator casing 13 are casing annular parts, and the secondary stator sector section 12 is used for being connected with the internal structure of the casing. The secondary rotor casing 11 and the secondary stator casing 13 are full-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 case 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 bolts, and the other end of the secondary stator casing is connected with the tertiary casing component through bolts.
The secondary rotor casing 11, the secondary stator casing 13, the extension casing 14 and the tertiary casing component enclose a first annular gas collecting cavity, the secondary rotor casing 11 is of an inverted T-shaped structure and can be stably attached to the casing structures on two sides, and the supporting strength and the sealing performance of the casing are improved.
Preferably, the three-stage casing assembly comprises a three-stage rotor casing 15, a three-stage stator casing 17 and a three-stage stator sector section 16, wherein the three-stage rotor casing 15 and the three-stage stator casing 17 are all full-circle casings, and the three-stage stator sector section 16 is connected between the three-stage rotor casing 15 and the three-stage stator casing 17;
The cross section of the three-stage rotor casing 15 is of an inverted T-shaped structure, one side of the three-stage rotor casing 15, which is close to the extending casing 14, is connected with the three-stage stator casing 17 and the two-stage stator casing 13 through bolts, the end part, which is close to one side of the extending casing 14, of the three-stage rotor casing 15 is connected with the extending casing 14 in a sealing mode, and the three-stage stator casing 17 is connected with the four-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 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 stably attached to casing structures on two sides, and the supporting strength and sealing performance of the casing are improved.
Preferably, the four-stage casing assembly comprises a four-stage rotor casing 18, the four-stage rotor casing 18 being bolted to the three-stage stator casing 17 and the load ring 19.
The secondary rotor casing 11, the tertiary rotor casing 15 and the quaternary rotor casing 18 are all of a full-ring structure, so that the rigidity of the casing is improved, and the circumferential uniformity of blade tip gaps is improved.
As shown in fig. 2 and 3, preferably, a circular seam 23 connected with the air bleed holes 22 on the primary annular air collecting cavity 24 is formed between the tertiary rotor casing 15 and the secondary stator segment 12, a circular seam 23 connected with the air bleed holes 22 on the secondary annular air collecting cavity 25 is formed between the quaternary rotor casing 18 and the tertiary rotor segment, and the circular seam 23 is arranged so that the pressure loss of the air bleed of the primary annular air collecting cavity 24 and the secondary annular air collecting cavity 25 is reduced.
Preferably, a W sealing ring 20 is connected between the three-stage rotor casing 15 and the extension casing 14, and the W sealing ring 20 can ensure sealing performance between the primary annular gas collection cavity 24 and the secondary annular gas collection cavity 25.
Preferably, be equipped with the insulating sheath 21 between the load-carrying ring 19 and the extension receiver 14, the insulating sheath 21 is annular and with the coaxial setting of load-carrying ring 19, the insulating sheath 21 be the sectional structure and every section insulating sheath 21 all with load-carrying ring 19 bolted connection, the insulating sheath 21 of multistage setting can reduce the heating effect of bleed air to load-carrying ring 19, guarantees bolted connection's stability.
As shown in fig. 1, the front casing assembly preferably comprises a front section casing 1, a zero-order casing component, and a primary casing component; the front section casing 1 is of a split structure, two parts of the front section casing 1 are connected with the extension casing 14 through bolts, and the zero-level casing assembly comprises a zero-level stator blade 5 connected to the inner side of the front section casing 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 casing 1 and a zero-level linkage ring 3 connected with the zero-level 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 primary linkage 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.
The interface of the front case assembly and the rear case assembly is located behind the primary case assembly, increasing the axial length and diameter of the rear case assembly and improving the structural rigidity of the overall case.
As shown in fig. 1 and 4, preferably, the front casing 1 is provided with a longitudinal mounting edge 26 at a split position, the longitudinal mounting edge 26 is provided with a bolt hole along an edge position thereof, and the two front casings 1 are connected by bolts through the bolt hole on the longitudinal mounting edge 26. The fixing is stable by providing a longitudinal mounting edge 26 and connecting the two split casing sections by bolts.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in 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 receiver structure, includes preceding receiver sub-unit and back receiver sub-unit, its characterized in that: the rear case assembly comprises a second-level case assembly, a third-level case assembly, a fourth-level case assembly, an extension case (14) and a bearing ring (19);
The extension casing (14) is an outer casing arranged in a whole ring, the second-stage casing component, the third-stage casing component and the fourth-stage casing component are inner casings arranged in sequence from front to back, and the casing annular parts of the second-stage casing component, the third-stage casing component and the fourth-stage casing component are 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 is connected with the bearing ring (19) 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 bearing ring (19) through bolts, and the tertiary casing assembly is connected with the extension casing (14) in a sealing mode; the four-stage casing assembly is connected with the bearing ring (19) through bolts;
A first annular air collecting cavity is formed among the extension casing (14), the second-stage casing assembly and the third-stage casing assembly, and a second annular air collecting cavity is formed among the extension casing (14), the third-stage casing assembly, the fourth-stage casing assembly and the bearing ring (19);
Two air-entraining holes (22) which are respectively communicated with the first annular air-collecting cavity and the second annular air-collecting cavity are formed in the inner-layer casing, and the first annular air-collecting cavity and the second annular air-collecting cavity are all closed whole annular cavities except for the positions of the air-entraining holes (22).
2. The four-stage compressor case structure as set forth in 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), wherein the secondary rotor casing (11) and the secondary stator casing (13) are all full-circle 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 case (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 bolts, and the other end of the secondary stator casing is connected with the tertiary casing component through bolts.
3. The four-stage compressor case structure according to 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 sector section (16), wherein the three-stage rotor casing (15) and the three-stage stator casing (17) are all full-circle casings, and the three-stage stator sector section (16) is connected between the three-stage rotor casing (15) and the three-stage stator casing (17);
The cross section of tertiary rotor receiver (15) is reverse T shape structure, one side that tertiary rotor receiver (15) is close to extension receiver (14) is connected with tertiary stator receiver (17) and second grade stator receiver (13) bolt, the tip that tertiary rotor receiver (15) is close to extension receiver (14) one side is connected with extension receiver (14) sealing, tertiary stator receiver (17) and fourth grade receiver subassembly bolted connection.
4. The four-stage compressor case structure as set forth in claim 3, wherein: the four-stage casing assembly comprises a four-stage rotor casing (18), and the four-stage rotor casing (18) is connected with a three-stage stator casing (17) and a bearing ring (19) through bolts.
5. The four-stage compressor case structure as set forth in claim 4, wherein: a circular seam (23) connected with the air bleed holes (22) on the primary annular air collecting cavity (24) is formed between the tertiary rotor casing (15) and the secondary stator fan-shaped section (12), and a circular seam (23) connected with the air bleed holes (22) on the secondary annular air collecting cavity (25) is formed between the quaternary rotor casing (18) and the tertiary rotor fan-shaped section.
6. The four-stage compressor case structure as set forth in claim 3, wherein: 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 as set forth in claim 1, wherein: the novel heat-insulating sleeve is characterized in that a heat-insulating sleeve (21) is arranged between the bearing ring (19) and the extending casing (14), the heat-insulating sleeve (21) is annular and is coaxially arranged with the bearing ring (19), the heat-insulating sleeve (21) is of a segmented structure, and each segment of heat-insulating sleeve (21) is connected with the bearing ring (19) through bolts.
8. The four-stage compressor case structure as set forth in claim 1, wherein: the front casing assembly comprises a front section casing (1), a zero-level casing component and a first-level casing component;
The front section casing (1) is of a split structure, the two parts of the front section casing (1) are connected with the extension casing (14) through bolts, and the zero-level casing assembly comprises zero-level stator blades (5) connected to the inner side of the front section casing (1), zero-level inner rings (6) connected with the zero-level stator blades (5), zero-level rocker arms (2) connected to the outer side of the front section casing (1) and zero-level linkage rings (3) connected with the zero-level rocker arms (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 primary linkage 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 as set forth in claim 8, wherein: the front-section casing (1) is provided with a longitudinal installation edge (26) at the split position, the longitudinal installation edge (26) is provided with a bolt hole along the edge position of the front-section casing, and the two sections of the front-section casing (1) are connected through the bolt hole on the longitudinal installation 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 true CN114233685B (en) | 2024-10-18 |
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| 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 |
| 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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| 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 |
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| US6325595B1 (en) * | 2000-03-24 | 2001-12-04 | General Electric Company | High recovery multi-use bleed |
| US7094029B2 (en) * | 2003-05-06 | 2006-08-22 | General Electric Company | Methods and apparatus for controlling gas turbine engine rotor tip clearances |
| 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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2021
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN114233685A (en) | 2022-03-25 |
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