CN113586178A - Self-circulation cooling honeycomb seat structure - Google Patents
Self-circulation cooling honeycomb seat structure Download PDFInfo
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- CN113586178A CN113586178A CN202110944416.9A CN202110944416A CN113586178A CN 113586178 A CN113586178 A CN 113586178A CN 202110944416 A CN202110944416 A CN 202110944416A CN 113586178 A CN113586178 A CN 113586178A
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- Prior art keywords
- groove
- honeycomb
- seat body
- seat
- 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
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- 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 seat body of the honeycomb seat; 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; the front wall surface and the rear wall surface of the seat body are correspondingly provided with a front end inlet groove and a rear end outlet groove for gas to flow, air forms turbulent flow on a plurality of ribs distributed at intervals after entering the top groove of the seat body, and the top groove of the seat body between adjacent honeycomb seats carries out gas exchange flow through the front end inlet groove and the rear end outlet groove. Thereby reinforcing heat transfer improves heat exchange efficiency, and the top recess of pedestal carries out gas exchange through front end import groove and rear end export groove and flows between the honeycomb seat, and the gas can carry out the efficient heat exchange between a plurality of honeycomb seats for the cooling effect of honeycomb seat promotes, and then has promoted the ability of bearing the temperature of honeycomb seat, has solved gaseous problem that can not carry out the efficient heat exchange 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 the thrust-weight ratio, need to raise the temperature of the hot end part of the engine continuously in order to raise the thermal efficiency of the engine, but because of the restriction of the ability of bearing temperature of the material, in order to guarantee life-span and operation safety of the engine, need to cool hot end rotating part and stator part high-efficiently, the honeycomb seat installed in engine is one of hot end stator parts, while the engine works, the honeycomb seat will receive the heat conduction of the fuel gas and friction heat generation of the engine rotor blade, so need to cool the honeycomb seat while the engine runs;
at chinese patent publication CN 112523813A's aeroengine turbine rim structure of obturating, the air current carries out whole heat dissipation cooling to a plurality of honeycomb seats of installing on the machine casket, and when cooling air passed through the honeycomb seat, gas can not carry out the efficient heat exchange between a plurality of honeycomb seats for the cooling effect of some honeycomb seats reduces, and then has reduced the ability of bearing the temperature of honeycomb seat.
Disclosure of Invention
In order to solve the technical problem, 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 seat body of the honeycomb seat;
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;
the front wall surface and the rear wall surface of the seat body are correspondingly provided with a front end inlet groove and a rear end outlet groove for gas to flow, air forms turbulent flow on a plurality of ribs distributed at intervals after entering the top groove of the seat body, and the top groove of the seat body between adjacent honeycomb seats carries out gas exchange flow through the front end inlet groove and the rear end outlet groove.
Still include the stud that one end was fixed in pedestal top recess bottom, the stud other end is equipped with top-down's vexed hole, the vexed hole top uses end cover seal fixed, the side that the stud is close to the end cover bottom is equipped with the inlet port and the inside intercommunication of vexed hole of slope, stud vexed hole bottom side is equipped with venthole and pedestal top recess intercommunication, inlet port and venthole dislocation set, the stud is exposed in the outer duct in the back gas pocket of installation, the cooling gas of outer duct gets into from the inlet port of stud top under the effect of pressure differential and then discharges from the bottom of pedestal top recess through the venthole.
The groove at the top of the seat body is cast with a baffle plate sealed on the rib, the baffle plate divides the groove at the top of the seat body into a left half runner and a right half runner, and the width of the left half runner is larger than that of the right half runner.
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 the rib and the inner wall of the groove at the top of the seat body form a tail groove, and the tail groove is used for communicating the left half runner with the right half runner.
The front end inlet groove and the rear end outlet groove are positioned in the right half part flow passage, the rear end outlet groove is positioned on the side wall of the tail groove, and the stud bolt is positioned in the left half part flow passage far away from the tail groove;
and an exhaust groove for exhausting is arranged on the side edge of the groove at the top of the seat body close to the inlet groove at the front end.
The cooling gas of the outer duct enters from the air inlet under the action of pressure difference and is discharged into the left half runner from the groove at the top of the seat body through the air outlet, the cooling gas firstly forms turbulent flow in the left half runner with larger width area to efficiently absorb the heat of the left half runner, meanwhile forms high-pressure flow to the tail part groove in the left half runner under the action of pressure difference press-in, one part of the cooling gas is discharged into the front end inlet groove of the seat body of the next honeycomb seat through the rear end outlet groove, so that the right half runner at the rear end outlet groove is formed, and then the air flow at the exhaust groove and the air flow discharged from the rear end outlet groove to the front end inlet groove of the seat body of the previous honeycomb seat relatively rush out from the exhaust groove to flow out, so that the whole air flow flows to form self-circulation cooling.
The rib is formed on the bottom surface of the groove at the top of the seat body by casting.
The double-end bolt is welded and fixed in the bottom surface of the groove in the top of the seat body.
The end cover is screwed or cemented and sealed and fixed at the top of the blind hole of the stud bolt.
The invention has the beneficial effects that: the air is behind the top recess that gets into arbitrary pedestal, form the vortex on many interval distribution's rib, thereby the reinforcing heat transfer, heat exchange efficiency is improved, the top recess of pedestal carries out gas exchange through front end import groove and rear end export groove between the honeycomb seat and flows, the gas can carry out the efficient heat exchange between a plurality of honeycomb seats, make the cooling effect of honeycomb seat promote, and then the ability of bearing the temperature of honeycomb seat has been promoted, the problem of gas can not carry out the efficient heat exchange between a plurality of honeycomb seats has been solved, the air current through front end import groove and rear end export groove is to the pedestal front and back overlap section heat absorption, reach radiating effect.
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 housing;
FIG. 3 is a top view of the base of the present invention;
FIG. 4 is a schematic structural view of a use installation state of the present invention;
in the figure: 1-a seat body; 11-front end inlet slot; 12-rear outlet slot; 13-a separator; 14-left half runner; 15-right half flow channel; 16-tail recess; 17-a vent groove; 2-ribs; 3-stud bolts; 31-end cap; 32-an air intake; 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 described.
See fig. 1-4.
The invention relates to a self-circulation cooling honeycomb seat structure, which comprises:
a base body 1 of the honeycomb base;
casting a plurality of ribs 2 distributed at intervals on the bottom surface of a groove at the top of the seat body 1;
the correspondence is equipped with the front end import groove 11 and the rear end export groove 12 that supply the gas to flow on the preceding wall of pedestal 1 and the back wall, and the air forms the vortex after getting into the top recess of pedestal 1 on many interval distribution's rib 2 to the reinforcing heat transfer improves heat exchange efficiency, and the top recess of pedestal 1 between the adjacent honeycomb seat carries out gas exchange through front end import groove 11 and rear end export groove 12 and flows.
When adjacent honeycomb seat installation, preceding pedestal 1's rear end outlet groove 12 aligns the front end import groove 11 of later pedestal 1, the air is behind the top recess that gets into arbitrary pedestal 1, form the vortex on many interval distribution's rib 2, pedestal 1's top recess carries out gas exchange through front end import groove 11 and rear end outlet groove 12 and flows between the honeycomb seat, the gas can carry out efficient heat exchange between a plurality of honeycomb seats, make the cooling effect of honeycomb seat promote, and then promoted the ability of bearing the temperature of honeycomb seat, the problem that gas can not carry out efficient heat exchange between a plurality of honeycomb seats has been solved, the air current through front end import groove 11 and rear end outlet groove 12 absorbs the heat to the overlap joint section around pedestal 1, reach radiating effect.
The cooling device is characterized by further comprising a stud bolt 3 with one end welded and fixed in the bottom face of the groove in the top of the seat body 1, the other end of the stud bolt 3 is provided with a blank hole from top to bottom, the top of the blank hole is screwed or cemented and sealed and fixed through an end cover 31, the side face, close to the bottom of the end cover 31, of the stud bolt 3 is provided with an inclined air inlet 32 communicated with the inside of the blank hole, the side face of the bottom of the blank hole of the stud bolt 3 is provided with an air outlet 33 communicated with the groove in the top of the seat body 1, the air inlet 32 and the air outlet 33 are arranged in a staggered mode, cooling of the outer duct can smoothly enter the air inlet 32 and be discharged from the air outlet 33, the top edge of the rib 2 is located between the central line of the air outlet 33 and the bottom face of the inner wall of the air outlet 33, the air inlet 32 and the air outlet 33 are punched after the stud bolt 3 is welded and fixed in the groove in the top of the seat body 1, the position alignment is ensured, the air inlet 32 is exposed in the outer duct after the stud bolt 3 is installed, and cooling air in the outer duct under the action of the pressure difference, and then enters the air inlet 32 above the stud bolt 3 and passes through the air outlet 33 Discharge from the bottom of 1 top recess of pedestal, form the vortex on receiving many interval distribution's rib 2 for cold air carries out the efficient heat exchange with the honeycomb seat, and the top recess of pedestal 1 carries out gas exchange through front end import groove 11 and rear end export groove 12 and flows between the adjacent honeycomb seat, and the gas can carry out the efficient heat exchange between a plurality of honeycomb seats.
The baffle 13 of airtight on rib 2 is cast in the recess of pedestal 1 top, and baffle 13 becomes half left runner 14 and half right runner 15 with pedestal 1 top recess interval, and half left runner 14 width is greater than the width of half right runner 15, because the cooling air temperature that gets into half left runner 14 is low, and heat transfer ability is strong, and the air temperature is high after flowing to half right runner 15, needs more air to absorb heat at half right runner 15, reaches heat transfer balance.
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 the rib 2 and the inner wall of the groove at the top of the seat body 1 form a tail groove 16, and the tail groove 16 communicates the left half runner 14 with the right half runner 15;
the front end inlet groove 11 and the rear end outlet groove 12 are positioned in the right half part flow passage 15, the rear end outlet groove 12 is positioned on the side wall of the tail groove 16, and the stud bolt 3 is positioned in the left half part flow passage 14 far away from the tail groove 16;
an exhaust groove 17 for exhausting is arranged on the side edge of the groove at the top of the seat body 1 close to the inlet groove 11 at the front end, so that the air fluidity is improved.
The cooling air of the outer duct enters from the air inlet 32 under the action of pressure difference and then is discharged into the left half runner 14 from the groove at the top of the seat body 1 through the air outlet 33, the cooling air firstly forms turbulent flow in the left half runner 14 with larger width area to efficiently absorb the heat of the left half runner 14, meanwhile forms high-pressure flow to the tail groove 16 in the left half runner 14 under the action of pressure difference press-in, one part of the cooling air is discharged into the front end inlet groove 11 of the seat body 1 of the next honeycomb seat through the rear end outlet groove 12, so that the right half runner 15 at the rear end outlet groove 12 is opposite to the air flow discharged from the rear end outlet groove 12 to the front end inlet groove 11 of the seat body 1 of the previous honeycomb seat at the exhaust groove 17, and the air flow flows out from the exhaust groove 17, and the whole air flow flows to form self-circulation cooling.
After the base body 1 of a plurality of honeycomb seats is installed, the rear end outlet groove 12 of the honeycomb seat corresponds to the front end inlet groove 11 of the honeycomb seat, and the honeycomb 4 is welded under the base body 1 of the honeycomb seat, as can be seen from fig. 4, the honeycomb 4 is directly exposed in the gas and bears the friction of the low-pressure turbine rotor blade, so the borne temperature is very high, the temperature of the base body 1 of the honeycomb seat is reduced after the base body and the cooling gas of the outer duct are subjected to efficient heat exchange cooling, and the temperature of the honeycomb 4 connected with the base body is correspondingly reduced through heat conduction, so the cooling honeycomb seat can achieve the effect of indirectly cooling the honeycomb 4.
Claims (10)
1. A self-circulating cooled honeycomb seat 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);
the front wall surface and the rear wall surface of the seat body (1) are correspondingly provided with a front end inlet groove (11) and a rear end outlet groove (12) for gas to flow, air forms turbulent flow on a plurality of ribs (2) distributed at intervals after entering into the top groove of the seat body (1), and the top groove of the seat body (1) between adjacent honeycomb seats carries out gas exchange flow through the front end inlet groove (11) and the rear end outlet groove (12).
2. The self-circulating cooled honeycomb seat structure of claim 1, wherein: the ribs (2) are cast and formed on the bottom surface of the groove at the top of the seat body (1).
3. The self-circulating cooled honeycomb seat structure of claim 1, wherein: still fix stud (3) in pedestal (1) top recess bottom including one end, stud (3) other end is equipped with top-down's vexed hole, the vexed hole top uses end cover (31) sealed fixed, the side that stud (3) are close to end cover (31) bottom is equipped with inlet port (32) and the inside intercommunication of vexed hole of slope, stud (3) vexed hole bottom side is equipped with venthole (33) and pedestal (1) top recess intercommunication, after the installation, gas pocket (32) are exposed in the outer duct in stud (3), the cooling gas of outer duct gets into from inlet port (32) of stud (3) top under the effect of pressure differential and then discharges from the bottom of pedestal (1) top recess through venthole (33).
4. The self-circulating cooled honeycomb seat structure of claim 3, wherein: the stud bolts (3) are welded and fixed in the bottom surface of the groove in the top of the seat body (1).
5. The self-circulating cooled honeycomb seat structure of claim 3, wherein: the end cover (31) is screwed or glued and fixed on the top of the blind hole of the stud bolt (3).
6. The self-circulating cooled honeycomb seat structure of claim 3, wherein: the air inlet hole (32) and the air outlet hole (33) are arranged in a staggered mode.
7. The self-circulating cooled honeycomb seat structure of claim 3, wherein: a partition plate (13) sealed on the rib (2) is cast in a groove in the top of the seat body (1), the groove in the top of the seat body (1) is divided into a left half runner (14) and a right half runner (15) by the partition plate (13), and the width of the left half runner (14) is larger than that of the right half runner (15).
8. The self-circulating cooled honeycomb seat structure of claim 1 or 3, wherein: 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 the rib (2) and the inner wall of the groove at the top of the seat body (1) form a tail groove (16), and the tail groove (16) is used for communicating the left half runner (14) with the right half runner (15).
9. The self-circulating cooled honeycomb seat structure of claim 8, wherein: the front end inlet groove (11) and the rear end outlet groove (12) are located in the right half runner (15), the rear end outlet groove (12) is located on the side wall of the tail groove (16), and the stud bolt (3) is located in the left half runner (14) far away from the tail groove (16).
10. The self-circulating cooled honeycomb seat structure of claim 9, wherein: an exhaust groove (17) for exhausting is arranged on the side edge of the groove at the top of the seat body (1) close to the inlet groove (11) at the front end.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN113586178A true CN113586178A (en) | 2021-11-02 |
| CN113586178B CN113586178B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110944416.9A Active CN113586178B (en) | 2021-08-17 | 2021-08-17 | Self-circulation cooling honeycomb seat structure |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5584651A (en) * | 1994-10-31 | 1996-12-17 | General Electric Company | Cooled shroud |
| US20070062202A1 (en) * | 2005-09-16 | 2007-03-22 | Pratt & Whitney Canada Corp. | Cooled support boss for a combustor in a gas turbine engine |
| US20120328414A1 (en) * | 2010-12-21 | 2012-12-27 | Avio S.P. A. | Gas Turbine For Aeronautic Engines |
| US20130209231A1 (en) * | 2010-07-15 | 2013-08-15 | Anthony Davis | Nozzle guide vane with cooled platform for a gas turbine |
| US20150016947A1 (en) * | 2013-03-14 | 2015-01-15 | Rolls-Royce North American Technologies, Inc. | Augmented cooling system |
| 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 |
-
2021
- 2021-08-17 CN CN202110944416.9A patent/CN113586178B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5584651A (en) * | 1994-10-31 | 1996-12-17 | General Electric Company | Cooled shroud |
| US20070062202A1 (en) * | 2005-09-16 | 2007-03-22 | Pratt & Whitney Canada Corp. | Cooled support boss for a combustor in a gas turbine engine |
| US20130209231A1 (en) * | 2010-07-15 | 2013-08-15 | Anthony Davis | Nozzle guide vane with cooled platform for a gas turbine |
| US20120328414A1 (en) * | 2010-12-21 | 2012-12-27 | Avio S.P. A. | Gas Turbine For Aeronautic Engines |
| US20150016947A1 (en) * | 2013-03-14 | 2015-01-15 | Rolls-Royce North American Technologies, Inc. | Augmented cooling system |
| 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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| CN113586178B (en) | 2023-09-22 |
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