CN116291868B - Stamping combined cooling and power device based on reverse brayton variable cycle - Google Patents
Stamping combined cooling and power device based on reverse brayton variable cycle Download PDFInfo
- Publication number
- CN116291868B CN116291868B CN202310257452.7A CN202310257452A CN116291868B CN 116291868 B CN116291868 B CN 116291868B CN 202310257452 A CN202310257452 A CN 202310257452A CN 116291868 B CN116291868 B CN 116291868B
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- heat exchanger
- heat exchangers
- duct
- air
- heat
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- 238000001816 cooling Methods 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010248 power generation Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
- F02C7/141—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a stamping combined cooling and power device based on an inverse brayton variable cycle, which comprises a cooling turbine, a gas compressor, a generator, a transmission shaft, a plurality of groups of heat exchangers and a gas path regulating device, wherein air flow is depressurized and cooled through the cooling turbine, kinetic energy in high-speed free incoming flow is extracted to be changed into shaft work, the transmission shaft drives the generator to generate power, the gas compressor is driven, the depressurized and cooled air flow flows through the plurality of groups of heat exchangers to heat, the temperature is increased, the heat exchanger achieves a cooling function, and the heated air flow is pressurized through the gas compressor and discharged into the environment. The flow direction of the air flow is controlled by changing the structure of the channel of the heat exchanger device, so that the cold and electricity combined production under the condition of greatly changing working conditions is realized. The invention provides a heat exchanger which is divided into a plurality of groups and is arranged in a main flow path or an inner culvert and an outer culvert to realize series-parallel combination, the flow rate of the distributed air flow flowing through the inner culvert and the outer culvert is regulated by the air path regulating device to realize the change of thermodynamic cycle, and the system can meet the required refrigerating capacity and generating capacity requirements in the working range.
Description
Technical Field
The invention relates to the technical field of thermodynamic cycle utilization, in particular to a stamping combined cooling and power device based on an inverse Brayton variable cycle.
Background
In the prior art, the environmental control is mainly realized by adopting an independent cooling turbine for cooling or adopting a stamping turbine for extracting power to generate shaft work to drive a generator or other machines. It is also quite common to simply combine a cooled turbine and generator, but depending on the analysis, simple combinations cannot meet a wide operating range and high power implementation. Therefore, the cooling and power generation independent of other external energy input can be realized under the greatly-changed working condition only by means of high-speed free inflow, and the simple combination of the existing independent annular control cooling device and the turbine power generation device can not be met, so that the thermodynamic machine of the variable reverse brayton cycle is provided to solve the problems.
Disclosure of Invention
The invention aims to ensure higher-efficiency refrigerating capacity and power generation power of an environment-controlled cooling device and a turbine power generation device under the working condition of great change, and provides a variable-cycle stamping combined cooling and power generation device based on inverse Brayton, which adopts an adjustable gas path distribution device to realize the change of thermodynamic cycle.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a punching press cold and power cogeneration device based on variable circulation of anti-brayton, includes cooling turbine, compressor, generator, transmission shaft, multiunit heat exchanger and gas circuit adjusting device, cooling turbine and compressor are installed respectively at the entry and the export of heat exchanger duct, just cooling turbine with through the transmission shaft interconnect who is equipped with between the compressor, just the transmission shaft links to each other with the generator that is located the duct lower extreme and is equipped with, is equipped with multiunit heat exchanger in the duct, multiunit heat exchanger establish ties each other or parallelly connected the combination, install multiunit gas circuit adjusting device in the duct, the air current passes through cooling turbine reduces the temperature to draw kinetic energy in the high-speed free incoming flow to become the axle work, through transmission shaft drive generator electricity generation, and drive low reaches the compressor, the air current after the pressure reduction is flowed through multiunit heat exchanger heat transfer back intensification, the heat exchanger realizes cooling function, and the air current after the intensification passes through the compressor pressure boost discharge environment.
Preferably, the heat exchanger comprises a first heat exchanger and a second heat exchanger, and the first heat exchanger and the second heat exchanger are respectively placed in the inner duct and the outer duct to realize series-parallel connection combination.
Preferably, the first heat exchangers and the second heat exchangers are combined in series, wherein one group of the first heat exchangers simultaneously passes through the inner and outer ducts, and the other group of the second heat exchangers is placed in the inner duct.
Preferably, the first heat exchanger and the second heat exchanger are combined in parallel, wherein one group of the first heat exchangers is placed in the outer duct, and the other group of the second heat exchangers is placed in the inner duct.
Preferably, the air path adjusting device comprises a first air path adjusting device and a second air path adjusting device, and controls the air flow ratio of heat exchange through the first heat exchanger and the second heat exchanger so as to maintain higher-efficiency refrigerating capacity and generating power when the working conditions change in a large range.
Preferably, the first air path adjusting device and the second air path adjusting device adjust the direction of the air flow through the work doing mechanism under different working conditions.
Preferably, a first air path adjusting device is arranged behind the first heat exchanger in series connection, and the first air path adjusting device is arranged at the inlet of the duct of the first heat exchanger and the inlet of the duct of the second heat exchanger in parallel connection.
Compared with the prior art, the invention has the beneficial effects that: the ducts where the heat exchangers are arranged are divided into the inner ducts and the outer ducts, a plurality of groups of heat exchangers are respectively arranged in the main flow path, the inner ducts or the outer ducts, the series-parallel combination is realized, the flow rate of the distributed air flow flowing through the inner ducts and the outer ducts is regulated through the air path regulating device, the change of thermodynamic cycle is realized, and the system can meet the requirements of the required refrigerating capacity and the required generating capacity in a wide working range. The air path regulating device works according to the conditions that under the low-altitude working condition, the air temperature is high, the flow resistance is small, the refrigerating efficiency is low, the power generation efficiency is high, most of air passes through more inner channels of the heat exchanger through the air path regulating device, and the refrigerating efficiency is improved; under the high-altitude working condition, the air temperature is low, the flow resistance is high, the refrigeration efficiency is high, the power generation efficiency is low, most of air passes through fewer outer ducts of the heat exchanger through the air circuit adjusting device, the flow resistance is reduced, and the power generation efficiency is improved. Under different working conditions, the device can keep higher operation efficiency on the premise of ensuring the refrigerating capacity and the generating power.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is a schematic illustration of a tandem combination structure of the present invention;
FIG. 2 is a schematic diagram of a parallel combination structure of the present invention;
Reference numerals in the drawings: 1. cooling the turbine; 2. a first heat exchanger; 3. a first air passage adjusting device; 4. a second heat exchanger; 5. a second air path adjusting device; 6. a compressor; 7. a generator; 8. and a transmission shaft.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Examples: the utility model provides a stamping combined cooling and power device based on reverse brayton variable cycle, including cooling turbine 1, compressor 6, generator 7, transmission shaft 8, multiunit heat exchanger and gas circuit adjusting device, cooling turbine 1 and compressor 6 are installed respectively in the entry and the export of heat exchanger duct, and between cooling turbine 1 and the compressor 6 through the transmission shaft 8 interconnect that is equipped with, and transmission shaft 8 links to each other with the generator 7 that is located the duct lower extreme and is equipped with multiunit heat exchanger in the duct, multiunit heat exchanger is established ties each other or parallel combination, the heat exchanger includes first heat exchanger 2 and second heat exchanger 4, through first heat exchanger 2 and second heat exchanger 4 are placed respectively in inner duct and outer duct, realize the series-parallel combination, install multiunit gas circuit adjusting device in the duct, gas circuit adjusting device includes first gas circuit adjusting device 3 and second gas circuit adjusting device 5, and control is through the air current duty ratio of heat transfer that first heat exchanger 2 and second heat exchanger 4 carried out when the duct lower extreme is equipped with, be equipped with multiunit heat exchanger 2 and second heat exchanger 4 in order to satisfy the high-efficient change in a wide range, multiunit heat exchanger 2 and second heat exchanger 2 are equipped with the second heat exchanger 2 and the same heat exchanger 2 when the second heat exchanger is established in the air circuit adjusting device is established in the inner duct and outer duct 2, and the air circuit adjusting device is equipped with the second heat exchanger 2 and the second heat exchanger is equipped with the second heat exchanger and the air circuit adjusting device and the second heat exchanger is equipped with the same in the air circuit adjusting device and is placed in the inner duct and down; when the first heat exchanger 2 and the second heat exchanger 4 are combined in parallel, one group of the first heat exchangers 2 is placed in an outer duct, the other group of the second heat exchangers 4 is placed in an inner duct, the first air path adjusting device 3 is arranged at the inlet of the duct of the first heat exchangers 2 and the inlet of the duct of the second heat exchangers 4, the air flow is depressurized and cooled through the cooling turbine 1, kinetic energy in high-speed free incoming flow is extracted and changed into shaft work, the power is generated by driving the generator 7 through the transmission shaft 8, the downstream air compressor 6 is driven, the air flow after depressurization and cooling flows through a plurality of groups of heat exchangers for heat exchange and then is heated, the heat exchangers realize a cooling function, and the air flow after heating is pressurized through the air compressor 6 and discharged into the environment.
The working principle is as follows: the air flow is depressurized and cooled through the cooling turbine 1, kinetic energy in high-speed free incoming flow is extracted to be changed into shaft work, the generator 7 is driven to generate power through the transmission shaft 8, the downstream air compressor 6 is driven, the depressurized and cooled air flow flows through a plurality of groups of heat exchangers to exchange heat and then is heated, the heat exchangers realize a cooling function, and the heated air flow is pressurized through the air compressor 6 and discharged into the environment. The heat exchangers can be divided into a plurality of groups and are arranged in a main flow path or an connotation to realize series-parallel combination, as shown in fig. 1 and 2, wherein fig. 1 is a series combination, fig. 2 is a parallel combination, and the flow rate of the distributed air flow flowing through the inner and outer connotation is regulated by the air path regulating device to realize the change of thermodynamic cycle, so that the system can meet the requirements of required refrigerating capacity and generating capacity in a wide working range.
Specifically:
(1) For the series combination as shown in fig. 1: when working at high altitude (more than or equal to 10 km), the air temperature is low at the moment, the cold air flow required for generating certain refrigerating capacity is small, the first air passage regulating device 3 is arranged at the position II shown in fig. 1, only the first heat exchanger 2 participates in working, working on the opposite ground is performed, the air temperature is high at the moment, the refrigerating efficiency is low, the first air passage regulating device 3 is arranged at the position I shown in fig. 1, at the moment, the outer duct is closed, air flows through the first heat exchanger 2 and the second heat exchanger 4 in the inner duct, the heat exchange capacity with higher efficiency is ensured, and when other working conditions are performed, the refrigerating capacity and the generating capacity are regulated through the mutual cooperation of the first air passage regulating device 3 and the second air passage regulating device 5 so as to meet the requirements.
(2) For parallel combinations: when working at high altitude (more than or equal to 10 km), the air temperature is low at this moment, the cold air flow required for generating certain refrigerating capacity is small, the first air path regulating device 3 is arranged at the position II shown in fig. 2, only the first heat exchanger 2 participates in working, the working condition is opposite to the ground, the air temperature is high at this moment, the refrigerating capacity efficiency is low, the first air path regulating device 3 is arranged at the position I shown in fig. 2, the first heat exchanger 2 and the second heat exchanger 4 participate in working at this moment, the heat exchanging capacity with higher efficiency is ensured, and in other working conditions, the refrigerating capacity and the generating capacity are regulated through the mutual cooperation of the first air path regulating device 3 and the second air path regulating device 5 so as to meet the requirement.
Finally, it should be noted that: the foregoing is merely a preferred example of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. Punching press cold and power cogeneration device based on variable circulation of contrary brayton, its characterized in that: the cooling turbine and the air compressor are respectively arranged at an inlet and an outlet of a heat exchanger duct, the cooling turbine and the air compressor are connected with each other through a transmission shaft arranged at the lower end of the duct, the transmission shaft is connected with a generator arranged at the lower end of the duct, a plurality of groups of heat exchangers are arranged in the duct, the heat exchangers are mutually connected in series or in parallel, a plurality of groups of air channel adjusting devices are arranged in the duct, air flow passes through the cooling turbine to be depressurized and cooled, kinetic energy in high-speed free incoming flow is extracted to be changed into shaft work, the transmission shaft drives the generator to generate electricity, drives the air compressor at the downstream, the depressurized and cooled air flow flows through a plurality of groups of heat exchangers to be heated after heat exchange, the heat exchangers realize a cooling function, and the heated air flow is pressurized and discharged into the environment through the air compressor;
the heat exchanger comprises a first heat exchanger and a second heat exchanger, and the first heat exchanger and the second heat exchanger are respectively placed in the inner duct and the outer duct to realize series-parallel connection combination;
The first heat exchangers and the second heat exchangers are mutually combined in series, wherein one group of the first heat exchangers simultaneously pass through the inner and outer ducts, and the other group of the second heat exchangers are arranged in the inner duct;
The first heat exchangers and the second heat exchangers are combined in parallel, wherein one group of the first heat exchangers is arranged in the outer duct, and the other group of the second heat exchangers is arranged in the inner duct;
The gas circuit adjusting device comprises a first gas circuit adjusting device and a second gas circuit adjusting device, and controls the air flow ratio of heat exchange through the first heat exchanger and the second heat exchanger so as to maintain higher-efficiency refrigerating capacity and generating power when the working conditions change in a large range.
2. The stamping combined cooling and power device based on the reverse brayton variable cycle according to claim 1, wherein: the first air passage adjusting device and the second air passage adjusting device adjust the direction of air flow through the work doing mechanism under different working conditions.
3. The stamping combined cooling and power device based on the reverse brayton variable cycle according to claim 2, wherein: and when the two heat exchangers are combined in parallel, the first air path adjusting device is arranged at the inlet of the duct of the first heat exchanger and the second heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310257452.7A CN116291868B (en) | 2023-03-17 | 2023-03-17 | Stamping combined cooling and power device based on reverse brayton variable cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310257452.7A CN116291868B (en) | 2023-03-17 | 2023-03-17 | Stamping combined cooling and power device based on reverse brayton variable cycle |
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| Publication Number | Publication Date |
|---|---|
| CN116291868A CN116291868A (en) | 2023-06-23 |
| CN116291868B true CN116291868B (en) | 2024-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310257452.7A Active CN116291868B (en) | 2023-03-17 | 2023-03-17 | Stamping combined cooling and power device based on reverse brayton variable cycle |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869036A (en) * | 2018-07-09 | 2018-11-23 | 北京航空航天大学 | High-speed aircraft and turbojet engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105156227B (en) * | 2015-09-29 | 2017-04-19 | 清华大学 | Pre-cooling air-breathing type variable cycle engine |
| US10017032B2 (en) * | 2016-02-16 | 2018-07-10 | The Boeing Company | Thermal management systems and methods |
| US10842044B2 (en) * | 2017-07-10 | 2020-11-17 | Rolls-Royce North American Technologies, Inc. | Cooling system in hybrid electric propulsion gas turbine engine |
| FR3101404B1 (en) * | 2019-10-01 | 2021-10-08 | Air Liquide | Motorization device, flying vehicle and method for cooling an engine |
| US11585273B2 (en) * | 2020-01-20 | 2023-02-21 | Raytheon Technologies Corporation | Aircraft heat exchangers |
| CN113738531B (en) * | 2021-11-03 | 2022-02-18 | 中国航发沈阳发动机研究所 | Indirect cooling type high-total-pressure-ratio middle duct turbofan engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869036A (en) * | 2018-07-09 | 2018-11-23 | 北京航空航天大学 | High-speed aircraft and turbojet engine |
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