CN113586178B - Self-circulation cooling honeycomb seat structure - Google Patents
Self-circulation cooling honeycomb seat structure Download PDFInfo
- Publication number
- CN113586178B CN113586178B CN202110944416.9A CN202110944416A CN113586178B CN 113586178 B CN113586178 B CN 113586178B CN 202110944416 A CN202110944416 A CN 202110944416A CN 113586178 B CN113586178 B CN 113586178B
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- Prior art keywords
- groove
- honeycomb
- stud
- seat body
- self
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a self-circulation cooling honeycomb seat structure, which comprises: a base body of the honeycomb base; a plurality of ribs which are distributed at intervals and exist on the bottom surface of the groove at the top of the seat body; front wall and back wall of the base are provided with front inlet groove and back outlet groove for gas flow, air after entering the top groove of the base forms turbulence on the ribs distributed at intervals, and the top groove of the base between adjacent honeycomb bases exchanges gas flow through the front inlet groove and the back outlet groove. Thereby strengthen the heat transfer, improve heat exchange efficiency, the top recess of pedestal flows through front end import groove and rear end export groove between the honeycomb seat carries out gas exchange, and gas can carry out efficient heat exchange between a plurality of honeycomb seats for the cooling effect of honeycomb seat promotes, and then has promoted the heat-carrying capacity of honeycomb seat, has solved the gas can not carry out efficient heat exchange's problem between a plurality of honeycomb seats.
Description
Technical Field
The invention relates to a self-circulation cooling honeycomb seat structure, and belongs to the technical field of aero-engine honeycomb seats.
Background
Because the modern engine pursues push-to-weight ratio, the temperature of a hot end part of the engine is required to be continuously increased to improve the heat efficiency of the engine, but because of the limitation of the temperature bearing capacity of materials, in order to ensure the service life and the operation safety of the engine, a hot end rotating part and a stator part are required to be efficiently cooled, a honeycomb seat arranged in the engine is one of the hot end stator parts, and when the engine works, the honeycomb seat is subjected to heat conduction of fuel gas and frictional heat generation of engine rotor blades, so that the honeycomb seat is required to be cooled when the engine works;
in the aeroengine turbine rim sealing structure with the Chinese patent publication number of CN112523813A, air flow carries out integral heat dissipation and cooling on a plurality of honeycomb seats arranged on a casing, and when cooling air passes through the honeycomb seats, the air cannot carry out efficient heat exchange among the honeycomb seats, so that the cooling effect of some honeycomb seats is reduced, and the temperature bearing capacity of the honeycomb seats is reduced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a self-circulation cooling honeycomb seat structure.
The invention is realized by the following technical scheme.
The invention provides a self-circulation cooling honeycomb seat structure, which comprises:
a base body of the honeycomb base;
a plurality of ribs which are distributed at intervals and exist on the bottom surface of the groove at the top of the seat body;
front wall and back wall of the base are provided with front inlet groove and back outlet groove for gas flow, air after entering the top groove of the base forms turbulence on the ribs distributed at intervals, and the top groove of the base between adjacent honeycomb bases exchanges gas flow through the front inlet groove and the back outlet groove.
The novel cooling device comprises a base body, and is characterized by further comprising a stud, one end of the stud is fixed in the bottom surface of the groove at the top of the base body, a closed hole from top to bottom is formed in the other end of the stud, the top of the closed hole is sealed and fixed by an end cover, an inclined air inlet hole is formed in the side surface of the bottom of the stud, which is close to the end cover, and is communicated with the groove at the top of the base body, an air outlet hole is formed in the side surface of the bottom of the closed hole of the stud, the air inlet hole and the air outlet hole are arranged in a staggered mode, the air inlet hole is exposed in an outer duct after the stud is installed, and cooling gas of the outer duct enters from the air inlet hole above the stud and is discharged from the bottom of the groove at the top of the base body through the air outlet hole under the action of pressure difference.
And a partition plate sealed on the rib is cast in the groove at the top of the seat body, the partition plate partitions the groove at the top of the seat body into a left half flow channel and a right half flow channel, and the width of the left half flow channel is larger than that of the right half flow channel.
The end part of the partition board close to the rear end outlet groove is spaced from the inner wall of the groove at the top of the seat body, so that a tail groove is formed by the rib and the inner wall of the groove at the top of the seat body, and the left half runner and the right half runner are communicated by the tail groove.
The front end inlet groove and the rear end outlet groove are positioned in the right half flow channel, the rear end outlet groove is positioned on the side wall of the tail groove, and the stud is positioned in the left half flow channel far away from the tail groove;
and an exhaust groove for exhaust is arranged on the side edge of the groove at the top of the seat body close to the front end inlet groove.
The cooling gas of the outer duct enters from the air inlet hole under the action of pressure difference and is discharged into the left half flow passage from the groove at the top of the base body through the air outlet hole, the cooling gas firstly forms turbulent flow at the left half flow passage with larger width area to efficiently absorb heat of the left half flow passage, meanwhile, under the action of pressure difference, high-pressure flow is formed at the left half flow passage to the tail groove, a part of the cooling gas is discharged into the front end inlet groove of the base body of the next honeycomb base through the rear end outlet groove, so that the right half flow passage at the rear end outlet groove is enabled, then air flows out of the air outlet groove in a relative impact manner with air flow discharged from the rear end outlet groove to the front end inlet groove of the base body of the last honeycomb base, and the whole air flow forms self-circulation cooling.
The rib casting molding is arranged on the bottom surface of the groove at the top of the seat body.
The stud bolts are welded and fixed in the bottom surface of the groove at the top of the seat body.
The end cover is screwed or glued to be sealed and fixed at the top of the closed hole of the stud.
The invention has the beneficial effects that: after the air enters the top groove of any seat body, turbulence is formed on the ribs distributed at intervals, so that heat exchange is enhanced, heat exchange efficiency is improved, the top groove of the seat body between the honeycomb seats carries out gas exchange flow through the front end inlet groove and the rear end outlet groove, gas can carry out efficient heat exchange between a plurality of honeycomb seats, the cooling effect of the honeycomb seats is improved, the temperature bearing capacity of the honeycomb seats is improved, the problem that gas cannot carry out efficient heat exchange between a plurality of honeycomb seats is solved, heat is absorbed by the front end inlet groove and the rear end outlet groove through the gas flow of the front end inlet groove and the rear end outlet groove, and the heat dissipation effect is achieved.
Drawings
FIG. 1 is a schematic cross-sectional view of a stud bolt of the present invention;
FIG. 2 is a schematic cross-sectional view of the stud of the present invention mounted on a seat;
FIG. 3 is a schematic top view of the base of the present invention;
FIG. 4 is a schematic view of the present invention in a use-installed configuration;
in the figure: 1-a base; 11-front inlet slot; 12-a rear end outlet slot; 13-a separator; 14-left half flow channel; 15-right half flow channel; 16-tail groove; 17-an exhaust groove; 2-ribs; 3-stud bolts; 31-end caps; 32-an air inlet hole; 33-air outlet holes; 4-honeycomb.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the above.
See fig. 1-4.
The invention provides a self-circulation cooling honeycomb seat structure, which comprises the following components:
a base body 1 of the honeycomb base;
casting and forming a plurality of ribs 2 which are distributed at intervals and exist on the bottom surface of a groove at the top of the seat body 1;
front wall surface and back wall surface of seat body 1 are equipped with front end inlet groove 11 and back end outlet groove 12 that supply gas to flow respectively, and the air forms the vortex on many interval distribution's rib 2 after getting into the top recess of seat body 1 to strengthen the heat transfer, improve heat exchange efficiency, the top recess of seat body 1 between the adjacent honeycomb seat carries out gas exchange flow through front end inlet groove 11 and back end outlet groove 12.
When the adjacent honeycomb seats are installed, the rear end outlet groove 12 of the front seat body 1 is aligned with the front end inlet groove 11 of the rear seat body 1, after air enters the top groove of any seat body 1, turbulence is formed on the ribs 2 distributed at intervals, the top grooves of the seat bodies 1 between the honeycomb seats exchange gas through the front end inlet groove 11 and the rear end outlet groove 12, the gas can exchange heat efficiently between the honeycomb seats, the cooling effect of the honeycomb seats is improved, the temperature bearing capacity of the honeycomb seats is improved, the problem that the gas cannot exchange heat efficiently between the honeycomb seats is solved, and the heat is absorbed by the front and rear lap joint sections of the seat bodies 1 through the air flow of the front end inlet groove 11 and the rear end outlet groove 12, so that the heat dissipation effect is achieved.
The air inlet and the air outlet are arranged in a staggered manner, so that cooling of the outer duct smoothly enters from the air inlet hole 32 and is discharged from the air outlet hole 33, the top edge of the rib 2 is positioned between the center line of the air outlet hole 33 and the bottom surface of the inner wall of the air outlet hole 33, the air inlet hole 32 and the air outlet hole 33 are perforated after the stud 3 is welded and fixed in the top groove of the seat body 1, the positions of the stud 3 are aligned, the stud 3 is exposed in the outer duct after being installed, cooling air of the outer duct enters from the air inlet hole 32 above the stud 3 and is discharged from the bottom of the top groove of the seat body 1 through the air outlet hole 33 under the action of pressure difference, and the cooling air forms on the rib 2 subjected to multiple interval distribution, so that cooling air and a honeycomb seat are subjected to efficient heat exchange, and the cooling air between the adjacent honeycomb bodies can pass through the air inlet hole 12 and the air outlet groove 11 of the front end of the honeycomb seat are subjected to efficient heat exchange, and the cooling air between the adjacent honeycomb bodies can pass through the air inlet and the air outlet groove 11 of the front end of the honeycomb seat is subjected to efficient heat exchange.
The baffle 13 sealed on the rib 2 is cast in the groove at the top of the base body 1, the baffle 13 divides the groove at the top of the base body 1 into the left half runner 14 and the right half runner 15, the width of the left half runner 14 is larger than that of the right half runner 15, because the temperature of cooling air entering the left half runner 14 is low, the heat exchange capacity is strong, the temperature of air flowing into the right half runner 15 is high, and more air is required to absorb heat in the right half runner 15 so as to achieve heat exchange balance.
The end of the partition plate 13 close to the rear end outlet groove 12 is spaced from the inner wall of the groove at the top of the seat body 1, so that a tail groove 16 is formed by the rib 2 and the inner wall of the groove at the top of the seat body 1, and the tail groove 16 communicates the left half flow channel 14 with the right half flow channel 15;
the front end inlet groove 11 and the rear end outlet groove 12 are positioned in the right half flow channel 15, the rear end outlet groove 12 is positioned on the side wall of the tail groove 16, and the stud 3 is positioned in the left half flow channel 14 far away from the tail groove 16;
an exhaust groove 17 for exhaust is provided on the side of the groove at the top of the base body 1 near the front inlet groove 11 to improve air flowability.
The cooling gas of the outer duct enters from the air inlet hole 32 under the action of pressure difference and is discharged into the left half flow channel 14 from the top groove of the base body 1 through the air outlet hole 33, the cooling gas firstly forms turbulence on the left half flow channel 14 with larger width area to efficiently absorb the heat of the left half flow channel 14, meanwhile, under the action of pressure difference, the cooling gas forms high-pressure flow to the tail groove 16 on the left half flow channel 14, a part of the cooling gas is discharged into the front end inlet groove 11 of the base body 1 of the next honeycomb base through the rear end outlet groove 12, so that the right half flow channel 15 at the rear end outlet groove 12 is enabled, then the air flows out of the air outlet groove 17 in a relative flushing manner with the air flow discharged from the rear end outlet groove 12 to the front end inlet groove 11 of the base body 1 of the previous honeycomb base, and the whole air flow forms self-circulation cooling.
After the plurality of honeycomb seats 1 are installed, the rear end outlet grooves 12 of the honeycomb seats correspond to the front end inlet grooves 11 of the honeycomb seats, the honeycomb 4 is welded under the honeycomb seats 1, as can be seen from fig. 4, the honeycomb 4 is directly exposed to the fuel gas and bears the friction of the low-pressure turbine rotor blades, so that the bearing temperature is very high, the temperature of the honeycomb seats 1 is reduced after the honeycomb seats 1 can be subjected to efficient heat exchange cooling with the cooling gas of the external duct, and the temperature of the honeycomb 4 connected with the honeycomb seats is correspondingly reduced through heat conduction, so that the honeycomb seats can be cooled indirectly.
Claims (7)
1. A self-circulating cooled honeycomb structure comprising:
a base body (1) of the honeycomb base;
a plurality of ribs (2) which are distributed at intervals and exist on the bottom surface of the groove at the top of the seat body (1);
front end inlet grooves (11) and rear end outlet grooves (12) for gas flow are correspondingly formed in the front wall surface and the rear wall surface of the base body (1), after air enters the top grooves of the base body (1), turbulence is formed on the plurality of ribs (2) which are distributed at intervals, and gas exchange flow is carried out on the top grooves of the base body (1) between adjacent honeycomb seats through the front end inlet grooves (11) and the rear end outlet grooves (12);
the end part of the partition plate (13) close to the rear end outlet groove (12) is spaced from the inner wall of the groove at the top of the seat body (1), so that a tail groove (16) is formed between the rib (2) and the inner wall of the groove at the top of the seat body (1), and the tail groove (16) is used for communicating the left half flow channel (14) with the right half flow channel (15);
the front end inlet groove (11) and the rear end outlet groove (12) are positioned in the right half flow channel (15), the rear end outlet groove (12) is positioned on the side wall of the tail groove (16), and the stud (3) is positioned in the left half flow channel (14) far away from the tail groove (16);
an exhaust groove (17) for exhaust is arranged on the side edge of the groove at the top of the seat body (1) close to the front end inlet groove (11).
2. The self-circulating cooled honeycomb structure of claim 1 wherein: the rib (2) is cast and formed on the bottom surface of the groove at the top of the seat body (1).
3. The self-circulating cooled honeycomb structure of claim 1 wherein: the novel cooling device is characterized by further comprising a stud (3) with one end fixed in the bottom surface of the groove at the top of the seat body (1), a closed hole from top to bottom is formed in the other end of the stud (3), the top of the closed hole is sealed and fixed by an end cover (31), an inclined air inlet hole (32) is formed in the side surface of the bottom of the stud (3) close to the bottom of the end cover (31) and is communicated with the inside of the closed hole, an air outlet hole (33) is formed in the side surface of the bottom of the closed hole of the stud (3) and is communicated with the groove at the top of the seat body (1), the air inlet hole (32) is exposed in an outer duct after the stud (3) is installed, and cooling gas of the outer duct enters from the air inlet hole (32) above the stud (3) under the action of pressure difference and is discharged from the bottom of the groove at the top of the seat body (1) through the air outlet hole (33).
4. A self-circulating cooled honeycomb structure as defined in claim 3 wherein: the stud bolts (3) are welded and fixed in the bottom surface of the groove at the top of the seat body (1).
5. A self-circulating cooled honeycomb structure as defined in claim 3 wherein: the end cover (31) is screwed or glued to be fixed at the top of the closed hole of the stud bolt (3).
6. A self-circulating cooled honeycomb structure as defined in claim 3 wherein: the air inlet holes (32) and the air outlet holes (33) are arranged in a staggered mode.
7. A self-circulating cooled honeycomb structure as defined in claim 3 wherein: a partition plate (13) sealed on the rib (2) is cast in a groove at the top of the base body (1), the partition plate (13) divides the groove at the top of the base body (1) into a left half flow channel (14) and a right half flow channel (15), and the width of the left half flow channel (14) is larger than that of the right half flow channel (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110944416.9A CN113586178B (en) | 2021-08-17 | 2021-08-17 | Self-circulation cooling honeycomb seat structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110944416.9A CN113586178B (en) | 2021-08-17 | 2021-08-17 | Self-circulation cooling honeycomb seat structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113586178A CN113586178A (en) | 2021-11-02 |
| CN113586178B true CN113586178B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110944416.9A Active CN113586178B (en) | 2021-08-17 | 2021-08-17 | Self-circulation cooling honeycomb seat structure |
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| Country | Link |
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| CN (1) | CN113586178B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5584651A (en) * | 1994-10-31 | 1996-12-17 | General Electric Company | Cooled shroud |
| CN105401986A (en) * | 2015-11-30 | 2016-03-16 | 成都发动机（集团）有限公司 | Flow channel arrangement structure of aero-engine high-pressure turbine cooling air |
| CN112523814A (en) * | 2020-12-01 | 2021-03-19 | 中国航发沈阳发动机研究所 | High-pressure compressor outlet sealing device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7559203B2 (en) * | 2005-09-16 | 2009-07-14 | Pratt & Whitney Canada Corp. | Cooled support boss for a combustor in a gas turbine engine |
| EP2407639A1 (en) * | 2010-07-15 | 2012-01-18 | Siemens Aktiengesellschaft | Platform part for supporting a nozzle guide vane for a gas turbine |
| IT1403415B1 (en) * | 2010-12-21 | 2013-10-17 | Avio Spa | GAS TURBINE FOR AERONAUTICAL MOTORS |
| US9638057B2 (en) * | 2013-03-14 | 2017-05-02 | Rolls-Royce North American Technologies, Inc. | Augmented cooling system |
-
2021
- 2021-08-17 CN CN202110944416.9A patent/CN113586178B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5584651A (en) * | 1994-10-31 | 1996-12-17 | General Electric Company | Cooled shroud |
| CN105401986A (en) * | 2015-11-30 | 2016-03-16 | 成都发动机（集团）有限公司 | Flow channel arrangement structure of aero-engine high-pressure turbine cooling air |
| CN112523814A (en) * | 2020-12-01 | 2021-03-19 | 中国航发沈阳发动机研究所 | High-pressure compressor outlet sealing device |
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| Publication number | Publication date |
|---|---|
| CN113586178A (en) | 2021-11-02 |
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