CN114017143B - Special-shaped exhaust and waste gas cooling device of turbine - Google Patents
Special-shaped exhaust and waste gas cooling device of turbine Download PDFInfo
- Publication number
- CN114017143B CN114017143B CN202110975452.1A CN202110975452A CN114017143B CN 114017143 B CN114017143 B CN 114017143B CN 202110975452 A CN202110975452 A CN 202110975452A CN 114017143 B CN114017143 B CN 114017143B
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- cooling
- rear end
- exhaust gas
- exhaust
- cooling water
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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
- F01D25/30—Exhaust heads, chambers, or the like
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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
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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
- F01D25/14—Casings modified therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a special-shaped exhaust and exhaust gas cooling device of a turbine, which comprises a shell, wherein the shell is connected with a rear end cover, the rear end cover is provided with an exhaust gas inlet, the rear end cover is positioned at the exhaust gas inlet and is sequentially connected with a cooling channel component with a hollow structure and an exhaust gas discharge pipe, cooling water channels are respectively arranged in the shell, the cooling channel component and the rear end cover, the cooling water channels in the shell and the cooling channel component are respectively communicated with the cooling water channels in the rear end cover, the rear end cover is positioned in the cooling water channels and is connected with a liquid water lumped pipeline, the liquid water lumped pipeline is connected with a nozzle ring with the hollow structure, the nozzle ring is connected with the outer wall of the exhaust gas discharge pipe, a conical nozzle is connected on the nozzle ring, and an outlet of the conical nozzle penetrates into the exhaust gas discharge pipe; the invention introduces the outboard liquid water into the internal flow channel of the exhaust device shell and the internal flow channel of the turbine shell respectively, cools the exhaust device and the shell, and then uses the nozzle ring to integrate and atomize the two paths of liquid water, and mixes with the waste gas, thereby realizing the cooling of the exhaust device and the cooling of the waste gas.
Description
Technical Field
The invention belongs to the technical field of cooling of gas turbines, and particularly relates to a special-shaped exhaust and waste gas cooling device of a turbine.
Background
The underwater vehicle has the characteristic that the internal space is limited, the exhaust device is used for communicating the turbine rotor outlet and the exhaust pipeline, the diameter of the exhaust pipeline is generally smaller than that of the turbine, and the rear end of the main shaft is required to be connected with the reduction gearbox, the propeller and the like, so that the exhaust pipeline and the main shaft of the turbine cannot be on the same axis when the internal space is distributed, and the internal space utilization rate of the underwater vehicle can be effectively improved by reasonably designing the structure of the exhaust device.
Under the requirements of high speed and large range of underwater vehicles, turbines are required to have higher output power and efficiency, and the operating temperature of the turbines is required to be further increased to improve the efficiency of the turbines. The exhaust temperature of the underwater turbine is above 700K, and the exhaust structure is likely to exceed the stress limit at high temperature, and the structural cooling scheme is considered in design. Generally, most of traditional turbine cooling is air cooling, but because the specific heat capacity of air is smaller, a certain volume of compressed air needs to be additionally carried for achieving the design heat exchange capacity, which is not beneficial to the reasonable utilization of the internal space of the underwater vehicle.
Disclosure of Invention
The invention aims to provide a turbine abnormal-shaped exhaust and exhaust gas cooling device, which is characterized in that outboard liquid water is respectively introduced into an internal runner of an exhaust device shell and an internal runner of the turbine shell to cool the exhaust device and the shell, and then two paths of liquid water are gathered and atomized through a nozzle ring to be mixed with exhaust gas to realize the cooling of the exhaust device and the cooling of the exhaust gas.
The technical scheme includes that the special-shaped exhaust and exhaust gas cooling device for the turbine comprises an annular shell, one end of the shell is connected with a rear end cover, an exhaust gas inlet is formed in the rear end cover, a cooling channel assembly and an exhaust gas discharge pipe with hollow structures are sequentially connected to the rear end cover at the exhaust gas inlet, cooling water channels are formed in the shell, the cooling channel assembly and the rear end cover, the cooling water channels in the shell and the cooling channel assembly are respectively communicated with the cooling water channels in the rear end cover, the rear end cover is connected with one end of a liquid water lumped pipeline at the tail end of the cooling water channel, the other end of the liquid water lumped pipeline is connected with a nozzle ring with hollow structures, the nozzle ring is connected with the outer wall of the exhaust gas discharge pipe, a plurality of conical nozzles are connected to the nozzle ring at equal intervals, and a plurality of conical nozzle outlets penetrate into the exhaust gas discharge pipe.
The invention is also characterized in that:
the side wall of the shell is provided with a cooling water channel a along the circumference, a cooling water channel c with one end communicated with the cooling water channel a is arranged in the rear end cover, the rear end cover is provided with a water outlet a at the other end of the cooling water channel c, the side wall of the shell is provided with a water inlet a communicated with the cooling water channel a, the rear end cover is connected with a liquid water lumped pipeline at the water outlet a, and the cooling water sequentially passes through the water inlet a, the cooling water channel c and the water outlet a to enter the liquid water lumped pipeline.
The cooling channel component comprises an exhaust device lower shell connected with an exhaust gas discharge pipe, an exhaust device upper shell is sleeved outside the exhaust device lower shell, a cooling water channel b is formed between the exhaust device lower shell and the exhaust device upper shell, a water inlet b is formed at one end, close to the exhaust gas discharge pipe, between the exhaust device lower shell and the exhaust device upper shell, of the exhaust device lower shell, a rear end cover is connected with the other end of the exhaust device upper shell, a cooling water channel d is formed at the position, right opposite to the cooling water channel b, of the rear end cover, a water outlet b is formed at the position, located at the outlet of the cooling water channel d, of the rear end cover, a liquid water lumped pipeline is connected at the position, located at the water outlet b, of the rear end cover, and cooling water sequentially enters the liquid water lumped pipeline through the water inlet b, the cooling water channel d and the water outlet b.
The circumferential included angle between two adjacent conical nozzles is 40 degrees.
Each conical nozzle forms an axial angle of 45 degrees with the exhaust gas outlet pipe.
The beneficial effects of the invention are as follows:
in the cooling device, the cooling water channels are formed in the cooling channel assembly, the rear end cover and the casing, so that the exhaust device and the casing can be cooled, damage caused by overhigh temperature of the exhaust device and the casing is prevented, and the safe operation of the turbine is ensured; in addition, liquid water discharged from the cooling water channel is integrated and atomized and then sprayed into the exhaust gas, and the liquid water can absorb a large amount of latent heat in the phase change process, so that the exhaust gas is quickly cooled to become a gas-liquid mixture, and then pressurized and discharged, thereby improving the depth adaptability of the underwater turbine and reducing the wake and thermal characteristics of the underwater vehicle.
Drawings
FIG. 1 is a schematic view of a turbine profiled exhaust and exhaust gas cooling device according to the present invention;
FIG. 2 is a schematic view of another angular configuration of a turbine profiled exhaust and exhaust cooling device according to the invention;
FIG. 3 is a cross-sectional view of a turbine profile exhaust and exhaust cooling device of the present invention;
FIG. 4 is a diagram showing the connection relationship between a nozzle ring and a conical nozzle in the present invention.
In the figure, 1, water inlet b,2, exhaust gas discharge pipe, 3, exhaust lower casing, 4, casing, 5, water inlet a,6, rear end cover, 7, exhaust gas inlet, 8, exhaust upper casing, 9, cooling water channel c,10, nozzle ring, 11, liquid water lumped pipeline, 12, water outlet a,13, water outlet b,14, conical nozzle, 15, cooling water channel b,16, cooling water channel a,17, cooling water channel d.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The outboard liquid water of the aircraft has the advantage of having a high specific heat capacity and not needing to occupy a storage volume, so the introduction of liquid water from outboard for cooling is the most viable solution for underwater aircraft applications. In addition, excessive liquid water is still liquid after structural cooling, and can be directly sprayed into exhaust gas after being atomized through a nozzle ring, and the liquid water can absorb a large amount of latent heat in the phase change process, so that the exhaust gas is quickly cooled into a gas-liquid mixture, and further pressurized and discharged, thereby improving the depth adaptability of the underwater turbine and reducing the wake and thermal characteristics of an underwater vehicle.
The invention relates to a special-shaped exhaust and exhaust gas cooling device for a turbine of an underwater vehicle, which is used for cooling a shell of the turbine exhaust device of the underwater vehicle and cooling the exhaust gas, as shown in fig. 1, 2 and 3, and comprises an annular shell 4, wherein one end of the shell 4 is connected with a turbine combustion chamber, the rear end cover 6 is provided with an exhaust gas inlet 7, exhaust gas discharged by combustion can be guided, the rear end cover 6 is positioned at the exhaust gas inlet 7 and sequentially connected with a hollow cooling channel assembly and an exhaust gas discharge pipe 2, the exhaust gas sequentially enters the cooling channel assembly and the exhaust gas discharge pipe 2 through the exhaust gas inlet 7, finally is discharged through the exhaust gas discharge pipe 2, the shell 4, the cooling channel assembly and the rear end cover 6 are respectively provided with a cooling water channel, the outside liquid water channel can be respectively led into the cooling channel inside the cooling channel of the shell 4, the cooling water channel in the shell 4 is respectively communicated with the cooling water channel inside the rear end cover 6, the rear end cover 6 is positioned at the tail end of the cooling water channel and is connected with one end of a liquid water lumped pipeline 11, the other end of the liquid water lumped pipeline 11 is connected with a hollow structure nozzle ring 10, as shown in fig. 4, the outer wall of the nozzle ring 10 is connected with the exhaust gas outlet 2, the exhaust gas can be led into the cooling water channel 10 through the inner nozzle ring 10, and the inner nozzle ring 10 is in a plurality of the conical shape, and the nozzle ring 14 can be led into the exhaust gas channel 10, and the inner nozzle ring is cooled down by the exhaust gas channel is discharged into the inner nozzle ring 10, and the inner nozzle ring is connected with the inner nozzle ring, and the exhaust gas channel is cooled down by the exhaust gas channel, and the exhaust gas is cooled down by the exhaust gas channel.
The cooling water channel a16 is formed in the side wall of the shell 4 along the circumference, the shell 4 can be cooled, the cooling water channel c9 with one end communicated with the cooling water channel a16 is formed in the rear end cover 6, the rear end cover 6 can be cooled, the water outlet a12 is formed in the rear end cover 6 at the other end of the cooling water channel c9, the water inlet a5 communicated with the cooling water channel a16 is formed in the side wall of the shell 4, and the rear end cover 6 is connected with the liquid water lumped pipeline 11 at the water outlet a 12. The outboard liquid water is introduced through the water inlet a5, sequentially passes through the cooling water channel a16 and the cooling water channel c9, finally enters the liquid water lumped pipeline 11 through the water outlet a12, and cools the shell 4 and the rear end cover 6 in the flowing process of the liquid water.
The cooling channel assembly comprises an exhaust device lower shell 3 connected with an exhaust gas discharge pipe 2, an exhaust device upper shell 8 is sleeved outside the exhaust device lower shell 3, a cooling water channel b15 is formed between the exhaust device lower shell 3 and the exhaust device upper shell 8, a water inlet b1 is connected to one end, close to the exhaust gas discharge pipe 2, between the exhaust device lower shell 3 and the exhaust device upper shell 8, outside liquid water is introduced through the water inlet b1, high-temperature exhaust gas in the exhaust device lower shell 3 and the exhaust device shell are cooled through the cooling water channel b15, the other end of the exhaust device lower shell 3 and the exhaust device upper shell 8 is connected with a rear end cover 6, a cooling water channel d17 is formed in the rear end cover 6, the rear end cover 6 is positioned at the outlet of the cooling water channel d17, a water outlet b13 is formed in the rear end cover 6, and the rear end cover 6 is positioned at the water outlet b13 and connected with a liquid water lumped pipeline 11. The outboard liquid water is introduced through the water inlet b1, sequentially passes through the cooling water channel b15 and the cooling water channel d17, finally enters the liquid water lumped pipeline 11 through the water outlet b13, and cools the high-temperature waste gas in the lower casing 3 of the exhaust device, the casing of the exhaust device and the rear end cover 6 in the flowing process of the liquid water.
The liquid water entering the liquid water lumped pipeline 11 through the water outlet a12 and the water outlet b13 is atomized and sprayed through the nozzle ring 10 and the conical nozzle 14, and the waste gas in the waste gas discharge pipe 2 is cooled again.
The invention relates to a using method of a special-shaped exhaust and exhaust gas cooling device of a turbine, which comprises the following steps:
the shell 4 is connected to the outside of a combustion chamber of the turbine, the exhaust gas discharge pipe 2 is connected with an exhaust gas subsequent treatment device, and exhaust gas generated by combustion of the combustion chamber sequentially enters the lower shell 3 of the exhaust device, the exhaust gas discharge pipe 2 and the inside of the exhaust gas subsequent treatment device through the exhaust gas inlet 7.
Simultaneously, the outboard liquid water is introduced into the side wall of the shell 4 through the water inlet a5, passes through the cooling water channel a16, the cooling water channel c9 and the water outlet a12 in sequence, and finally enters the nozzle ring 10 through the liquid water lumped pipeline 11, and in the process, the cooling water can cool the shell 4 and the rear end cover 6.
Simultaneously, introducing outboard liquid water into the cooling water flow passage in the cooling channel assembly through the water inlet b1, enabling the liquid water to sequentially pass through the cooling water passage b15, the cooling water passage d17 and the water outlet b13, and finally enabling the liquid water to enter the nozzle ring 10 through the liquid water lumped pipeline 11, wherein in the process, the liquid water can cool high-temperature waste gas in the lower shell 3 of the exhaust device, the shell of the exhaust device and the rear end cover 6.
The liquid water in the nozzle ring 10 can be atomized by the plurality of conical nozzles 14 and then sprayed into the exhaust gas discharge pipe 2 to cool the exhaust gas in the exhaust gas discharge pipe 2.
In the present invention, the outboard liquid water is introduced into the water inlet b1, the water inlet a5 through the cooling water pump, and after passing through the cooling water passage and other pipes, the pressure of the liquid water is maintained at the post-pump pressure, and then enters the nozzle ring 10 through the liquid water lumped pipe 11.
In the invention, in order to ensure the atomization effect of cooling water, a plurality of conical nozzles 14 are used for atomizing simultaneously under the condition of determining the flow rate of the cooling water, so as to ensure that droplets with small enough size are generated, the heat exchange area is increased, the cooling effect of waste gas is further improved, and in order to ensure uniform cooling effect in the circumferential direction, the plurality of conical nozzles 14 are uniformly distributed according to a circumferential included angle of 40 degrees. The cooling effect is drastically deteriorated by too early contact of the spray with the wall surface, and the axial angle between the plurality of conical nozzles 14 and the exhaust gas discharge pipe 2 is selected to be 45 ° in consideration of the exhaust gas cooling effect and the cooling section length limitation.
Through the mode, the special-shaped exhaust and waste gas cooling device for the turbine is characterized in that liquid water is introduced from the outside to cool the shell of each part, so that the exhaust device and the shell are prevented from being damaged due to overhigh temperature, and the safe operation of the turbine is ensured; the liquid water is still liquid after structural cooling, and can be directly sprayed into the exhaust gas after being atomized through the nozzle ring, and the liquid water can absorb a large amount of latent heat in the phase change process, so that the exhaust gas is quickly cooled into a gas-liquid mixture, and then pressurized and discharged, thereby improving the depth adaptability of the underwater turbine and reducing the wake and thermal characteristics of the underwater vehicle.
Claims (4)
1. The special-shaped exhaust and exhaust gas cooling device for the turbine is characterized by comprising an annular shell (4), one end of the shell (4) is connected with a rear end cover (6), an exhaust gas inlet (7) is formed in the rear end cover (6), the rear end cover (6) is positioned at the exhaust gas inlet (7) and is sequentially connected with a cooling channel component and an exhaust gas discharge pipe (2) with hollow structures, cooling water channels are formed in the shell (4), the cooling channel component and the rear end cover (6), the cooling water channels in the shell (4) and the cooling channel component are respectively communicated with the cooling water channels in the rear end cover (6), one end of a liquid water lumped pipeline (11) is connected to the rear end of the cooling water channel, the other end of the liquid water lumped pipeline (11) is connected with a nozzle ring (10) with hollow structures, the nozzle ring (10) is connected with the outer wall of the exhaust gas discharge pipe (2), a plurality of conical nozzles (14) are connected to the nozzle ring (10) at equal intervals, and the outlets of the conical nozzles (14) penetrate into the exhaust gas discharge pipe (2);
the cooling channel assembly comprises an exhaust device lower shell (3) connected with an exhaust gas discharge pipe (2), an exhaust device upper shell (8) is sleeved outside the exhaust device lower shell (3), the exhaust device lower shell (3) and the exhaust device upper shell (8) form a cooling water channel b (15), a water inlet b (1) is connected between the exhaust device lower shell (3) and the exhaust device upper shell (8) at one end, close to the exhaust gas discharge pipe (2), of the exhaust device lower shell (3) and the other end of the exhaust device upper shell (8) and connected with a rear end cover (6), a cooling water channel d (17) is formed on the rear end cover (6) opposite to the cooling water channel b (15), a water outlet b (13) is formed on the rear end cover (6) at the outlet of the cooling water channel d (17), the rear end cover (6) is positioned at the water outlet b (13) and connected with a liquid water lumped pipeline (11), and cooling water sequentially enters the liquid water lumped pipeline (11) through the water inlet b (1), the cooling water channel b (15) and the cooling water channel d (17).
2. The special-shaped exhaust and exhaust gas cooling device for the turbine according to claim 1, wherein a cooling water channel a (16) is formed in the side wall of the casing (4) along the circumference, a water inlet a (5) communicated with the cooling water channel a (16) is formed in the side wall of the casing (4), a cooling water channel c (9) with one end communicated with the cooling water channel a (16) is formed in the rear end cover (6), a water outlet a (12) is formed in the rear end cover (6) and positioned at the other end of the cooling water channel c (9), a liquid water lumped pipeline (11) is connected to the rear end cover (6) at the water outlet a (12), and cooling water sequentially enters the liquid water lumped pipeline (11) through the water inlet a (5), the cooling water channel a (16) and the cooling water channel c (9).
3. A turbine profile exhaust and exhaust gas cooling device according to claim 1, characterized in that the circumferential angle between two adjacent conical nozzles (14) is 40 °.
4. A turbine profiled exhaust and exhaust gas cooling device according to claim 1, characterized in that each of said conical nozzles (14) is axially inclined at 45 ° to the exhaust gas outlet pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110975452.1A CN114017143B (en) | 2021-08-24 | 2021-08-24 | Special-shaped exhaust and waste gas cooling device of turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110975452.1A CN114017143B (en) | 2021-08-24 | 2021-08-24 | Special-shaped exhaust and waste gas cooling device of turbine |
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| Publication Number | Publication Date |
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| CN114017143A CN114017143A (en) | 2022-02-08 |
| CN114017143B true CN114017143B (en) | 2023-07-04 |
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| CN202110975452.1A Active CN114017143B (en) | 2021-08-24 | 2021-08-24 | Special-shaped exhaust and waste gas cooling device of turbine |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201751548U (en) * | 2010-07-09 | 2011-02-23 | 上汽通用五菱汽车股份有限公司 | Engine water outlet support |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW539828B (en) * | 2001-08-17 | 2003-07-01 | Nippon Oxygen Co Ltd | Cooling method and apparatus of emission gas with high temperature, and burning handling apparatus |
| CA2645236A1 (en) * | 2008-11-03 | 2010-05-03 | Imad Hamad | Submersed turbine bearings |
| US9835333B2 (en) * | 2014-12-23 | 2017-12-05 | General Electric Company | System and method for utilizing cooling air within a combustor |
| US10422246B2 (en) * | 2016-10-24 | 2019-09-24 | General Electric Company | Bearing housing with impingement cooling system |
| CN110578560A (en) * | 2019-09-05 | 2019-12-17 | 杭州万辰机电科技有限公司 | ORC circulation system based on static pressure air bearing |
| CN113217193B (en) * | 2021-05-14 | 2022-05-27 | 西北工业大学 | Turbine wheel disc water spray cooling structure |
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2021
- 2021-08-24 CN CN202110975452.1A patent/CN114017143B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201751548U (en) * | 2010-07-09 | 2011-02-23 | 上汽通用五菱汽车股份有限公司 | Engine water outlet support |
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