CN116072318A - Multi-loop brayton cycle energy conversion system for heat pipe stacks and method of operation - Google Patents
Multi-loop brayton cycle energy conversion system for heat pipe stacks and method of operation Download PDFInfo
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- CN116072318A CN116072318A CN202310057175.5A CN202310057175A CN116072318A CN 116072318 A CN116072318 A CN 116072318A CN 202310057175 A CN202310057175 A CN 202310057175A CN 116072318 A CN116072318 A CN 116072318A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 12
- 238000004321 preservation Methods 0.000 claims abstract description 4
- 238000002955 isolation Methods 0.000 claims description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000003758 nuclear fuel Substances 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims description 3
- 230000004992 fission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/24—Promoting flow of the coolant
- G21C15/257—Promoting flow of the coolant using heat-pipes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a multi-loop brayton cycle energy conversion system for a heat pipe stack, comprising: a reactor; the heat exchange device comprises a heat pipe heat exchanger and a runner structure, the runner structure is arranged in the heat pipe heat exchanger, working media circulate in the runner structure, an interface component is arranged on the heat pipe heat exchanger, and the interface component is communicated with the runner structure; the heat pipe is internally provided with working media in a circulating way, one end of the heat pipe is inserted into the reactor, the other end of the heat pipe is inserted into the heat exchanger of the heat pipe, and the part of the heat pipe between the reactor and the heat exchange device is coated with a heat preservation layer; the Brayton cycle system is provided with a plurality of Brayton cycle systems, and the outlet of the Brayton cycle system is communicated with the interface component; the distribution assembly is communicated with the interface assembly, and inlets of the plurality of Brayton cycle systems are all communicated with the distribution assembly. The invention can improve the energy conversion efficiency, the safety and the reliability of the nuclear power device and ensure that the reactor core is cooled more uniformly.
Description
Technical Field
The invention belongs to the technical field of reactor engineering, and particularly relates to a multi-loop Brayton cycle energy conversion system for a heat pipe pile and an operation method.
Background
Compared with the traditional static thermoelectric conversion mode, the supercritical carbon dioxide Brayton cycle system is applied to the heat pipe pile, can remarkably improve the energy conversion efficiency, reduces the volume and weight of equipment, and expands the power range of the heat pipe pile. However, in application scenes such as space, ocean and the like, the nuclear power device adopting the heat pipe pile to combine the supercritical carbon dioxide Brayton cycle also has the problems of difficult power adjustment, low energy conversion efficiency of the Brayton cycle system under the low-load working condition, and great energy waste.
Therefore, it is necessary to design a brayton cycle energy conversion system scheme for a heat pipe stack to achieve mutual matching of the heat pipe stack and the brayton cycle energy conversion system, so that the output power of the reactor can be flexibly changed according to load requirements, and the energy conversion efficiency of the nuclear power plant is improved.
Disclosure of Invention
It is an object of the present invention to provide a multi-loop brayton cycle energy conversion system and method of operation for a heat pipe stack that addresses the problems of the prior art described above.
To achieve the above object, the present invention provides a multi-loop brayton cycle energy conversion system for a heat pipe stack, comprising:
a reactor;
the heat exchange device comprises a heat pipe heat exchanger and a runner structure, the runner structure is arranged in the heat pipe heat exchanger, working media circulate in the runner structure, an interface assembly is arranged on the heat pipe heat exchanger, and the interface assembly is communicated with the runner structure;
the heat pipe is internally provided with working media in a circulating way, one end of the heat pipe is inserted into the reactor, the other end of the heat pipe is inserted into the heat pipe heat exchanger, and the part of the heat pipe between the reactor and the heat exchange device is coated with an insulating layer;
a brayton cycle system, wherein a plurality of brayton cycle systems are arranged, and an outlet of the brayton cycle system is communicated with the interface assembly;
and the distribution assembly is communicated with the interface assembly, and the inlets of the plurality of Brayton cycle systems are communicated with the distribution assembly.
Preferably, the runner structure comprises a partition plate and a spiral heat exchange plate, the partition plate and the spiral heat exchange plate are fixedly connected in the heat pipe heat exchanger, the partition plate and the spiral heat exchange plate divide the heat pipe heat exchanger into an outer annular cavity and an inner space, the outer annular cavity and the inner space are spiral runners, the outer annular cavity and the inner space are communicated through an annular channel, a plurality of heat pipes are arranged in the outer annular cavity and the inner space, and penetrate through the spiral heat exchange plate, and the outer annular cavity and the inner space are communicated with the interface assembly.
Preferably, the distribution assembly comprises a distribution main pipe and a plurality of isolation valves, the distribution main pipe is communicated with the interface assembly, the isolation valves are communicated with the distribution main pipe, and the inlets of the brayton cycle system are respectively communicated with the isolation valves.
Preferably, the interface assembly comprises an outlet interface and a plurality of inlet interfaces, the outlet interface and the inlet interfaces are fixedly connected to the heat pipe exchanger, the distribution main pipe is communicated with the inner space through the outlet interfaces, and the outlets of the brayton cycle system are respectively communicated with the outer annular cavity through the inlet interfaces.
Preferably, the inlet interfaces are all obliquely arranged towards the same rotation direction.
Preferably, the brayton cycle system comprises a generator, a steam turbine, a heat regenerator, a compressor and a cooler, wherein a steam inlet of the steam turbine is communicated with the isolation valve, a steam outlet of the steam turbine is communicated with an inlet of the heat regenerator, an outlet of the heat regenerator is communicated with an inlet of the cooler, an outlet of the cooler is communicated with an inlet of the compressor, an outlet of the compressor is communicated with another inlet of the heat regenerator, another outlet of the heat regenerator is communicated with the inlet interface, and the generator and the compressor are in transmission connection with the steam turbine.
Preferably, the working medium is supercritical carbon dioxide.
Preferably, the heat pipe comprises an evaporation section, a heat insulation section and a condensation section, wherein the heat insulation section is coated with the heat insulation layer, the evaporation section is inserted into the reactor, and the condensation section is inserted into the heat pipe heat exchanger.
A method of operating a multi-loop brayton cycle energy conversion system for a heat pipe stack using the multi-loop brayton cycle energy conversion system for a heat pipe stack described above, comprising the steps of:
s1, fission of nuclear fuel of a reactor core generates heat, and the heat is transferred to the heat pipe heat exchanger through two-phase natural circulation of working medium in the heat pipe to heat the working medium in the heat pipe heat exchanger;
s2, enabling the heat-absorbing working medium in the heat pipe heat exchanger to enter the steam turbine through the distribution main pipe to do work so as to drive the generator to generate power, enabling the working medium to further release heat through the heat regenerator, and then enabling the working medium to enter the compressor for pressurization after being further cooled through the cooler so as to complete the whole energy conversion process;
s3, low-temperature gas working media enter from the inlet interface of the heat pipe heat exchanger, exchange heat along the outer annular cavity and the inner space respectively, and then enter the distribution main pipe through the outlet interface;
s4, when the power generation load needs to be reduced, one or more isolation valves are closed at will, and one or more groups of Brayton cycle systems can be isolated;
s5, reducing the flow of the low-temperature gas working medium entering the heat pipe heat exchanger, so that the heat quantity led out by the heat pipe is reduced, the temperature of the reactor core is increased, the power of the reactor is automatically reduced under the action of negative feedback of the temperature of the reactor, and the reactor is automatically regulated to reach a new balance state.
The invention discloses the following technical effects:
1. the multi-loop Brayton cycle energy conversion system for the heat pipe pile can realize benign adaptation of the heat pipe pile and a plurality of Brayton systems, each Brayton system always operates under a design working condition in the reactor variable load adjustment process, the energy conversion efficiency is improved, and the energy waste is reduced.
2. According to the invention, through designing a novel sleeve type spiral heat exchange structure, the gas working medium transversely washes the heat pipe, the heat exchange capacity of the heat pipe heat exchanger is improved, meanwhile, the full mixing of working media with different parameters can be realized, and the power distribution of the reactor is prevented from being distorted due to uneven heat exchange.
3. According to the multi-loop Brayton cycle energy conversion system for the heat pipe pile, the input and the operation of the Brayton cycle system are regulated through the switch of the control valve, the operation is simple, a plurality of Brayton systems can be mutually standby, and the safety and the reliability of a nuclear power device are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a multi-loop Brayton cycle energy conversion system for a heat pipe stack according to the present invention;
FIG. 2 is a schematic diagram of the inlet and outlet arrangement of the heat pipe exchanger of the present invention;
FIG. 3 is a block diagram of the Brayton cycle system of the present invention;
FIG. 4 is a schematic view of a spiral heat exchanger plate arrangement of a heat pipe exchanger of the present invention;
1, a reactor; 2. a heat pipe; 3. a heat preservation layer; 4. a heat pipe heat exchanger; 41. an inlet interface; 42. an outlet interface; 5. a partition plate; 6. distributing a main pipe; 7. a brayton cycle system; 8. an isolation valve; 9. an outer annular cavity; 10. an inner space; 11. an annular channel; 12. a generator; 13. a steam turbine; 14. a regenerator; 15. a compressor; 16. a cooler; 17. spiral heat exchange plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The present invention provides a multi-loop brayton cycle energy conversion system for a heat pipe stack comprising:
a reactor 1;
the heat exchange device comprises a heat pipe heat exchanger 4 and a runner structure, the runner structure is arranged in the heat pipe heat exchanger 4, working media circulate in the runner structure, an interface component is arranged on the heat pipe heat exchanger 4, and the interface component is communicated with the runner structure;
the heat pipe 2 is internally communicated with working media, one end of the heat pipe 2 is inserted into the reactor 1, the other end of the heat pipe 2 is inserted into the heat pipe exchanger 4, and the part of the heat pipe 2 between the reactor 1 and the heat exchange device is coated with the heat preservation layer 3;
the Brayton cycle system 7 is provided with a plurality of Brayton cycle systems 7, and the outlet of the Brayton cycle system 7 is communicated with the interface component;
the distribution assembly is communicated with the interface assembly, and the inlets of the plurality of Brayton cycle systems 7 are all communicated with the distribution assembly.
Further, the runner structure includes baffle 5 and spiral heat transfer board 17, baffle 5 and spiral heat transfer board 17 all rigid coupling are in heat pipe exchanger 4, baffle 5 and spiral heat transfer board 17 separate into outer ring chamber 9 and inner space 10 in with heat pipe exchanger 4, outer ring chamber 9 and inner space 10 are spiral runner, outer ring chamber 9 and inner space 10 pass through annular channel 11 intercommunication, all be provided with a plurality of heat pipes 2 in outer ring chamber 9 and the inner space 10, a plurality of heat pipes 2 all run through spiral heat transfer board 17, outer ring chamber 9 and inner space 10 all communicate with the interface subassembly.
The working medium flows in the heat pipe exchanger 4 along the outer annular cavity 9 to the bottom end of the heat pipe exchanger 4, enters the inner space 10 through the annular channel 11, and flows out through the outlet interface 42.
According to the invention, the partition plate 5 and the spiral heat exchange plate 17 are arranged in the heat pipe exchanger 4, so that two spiral flow passages of the outer annular cavity 9 and the inner space 10 are formed, the working medium is used for transversely flushing the heat pipe 2, the heat exchange capacity of the heat pipe exchanger 4 is improved, meanwhile, the full mixing of working mediums with different parameters can be realized, and the power distribution of the reactor 1 is prevented from being distorted due to uneven heat exchange.
Further, the distribution assembly comprises a distribution main pipe 6 and a plurality of isolation valves 8, the distribution main pipe 6 is communicated with the interface assembly, the plurality of isolation valves 8 are all communicated with the distribution main pipe 6, and inlets of the plurality of brayton cycle systems 7 are respectively communicated with the plurality of isolation valves 8.
The invention can control the operation or closing of the brayton cycle system 7 by controlling the switch of the isolation valve 8, has simple operation, can mutually reserve by arranging a plurality of brayton cycle systems 7, and improves the safety and reliability of the nuclear power plant.
Further, the interface assembly comprises an outlet interface 42 and a plurality of inlet interfaces 41, the outlet interface 42 and the inlet interfaces 41 are fixedly connected to the heat pipe exchanger 4, the distribution main pipe 6 is communicated with the inner space 10 through the outlet interface 42, and the outlets of the plurality of brayton cycle systems 7 are respectively communicated with the outer layer annular cavity 9 through the plurality of inlet interfaces 41.
Further, the inlet ports 41 are all inclined toward the same rotation direction. The working medium enters the outer annular cavity 9 and then rotates in the same direction to transversely wash the heat transfer tube 2, so that the heat exchange capacity is enhanced.
Further, the brayton cycle system 7 comprises a generator 12, a steam turbine 13, a heat regenerator 14, a compressor 15 and a cooler 16, wherein a steam inlet of the steam turbine 13 is communicated with the isolation valve 8, a steam outlet of the steam turbine 13 is communicated with an inlet of the heat regenerator 14, an outlet of the heat regenerator 14 is communicated with an inlet of the cooler 16, an outlet of the cooler 16 is communicated with an inlet of the compressor 15, an outlet of the compressor 15 is communicated with another inlet of the heat regenerator 14, another outlet of the heat regenerator 14 is communicated with the inlet interface 41, and the generator 12 and the compressor 15 are in transmission connection with the steam turbine 13.
Further, the working medium is supercritical carbon dioxide.
Further, the heat pipe 2 comprises an evaporation section, an insulation section and a condensation section, wherein the insulation section is coated with an insulation layer 3, the evaporation section is inserted into the reactor 1, and the condensation section is inserted into the heat pipe exchanger 4.
A method of operating a multi-loop brayton cycle energy conversion system for a heat pipe stack using the multi-loop brayton cycle energy conversion system for a heat pipe stack described above, comprising the steps of:
s1, nuclear fuel of a reactor core 1 is fissionally decomposed to generate heat, and the heat is transferred to a heat pipe heat exchanger 4 through two-phase natural circulation of working medium in the heat pipe 2 to heat the working medium in the heat pipe heat exchanger 4;
s2, enabling the heat-absorbing working medium in the heat pipe heat exchanger 4 to enter a steam turbine 13 through a distribution main pipe 6 to do work to drive a generator 12 to generate power, enabling the working medium to further release heat through a heat regenerator 14, further cooling through a cooler 16, and then entering a compressor 15 to be pressurized to complete the whole energy conversion process;
s3, low-temperature gas working media enter from an inlet interface 41 of the heat pipe heat exchanger 4, exchange heat along the outer layer annular cavity 9 and the inner space 10 respectively, and then enter the distribution main pipe 6 through an outlet interface 42;
s4, when the power generation load needs to be reduced, one or more isolation valves 8 are closed at will, so that one or more groups of Brayton cycle systems 7 can be isolated;
s5, the flow of the low-temperature gas working medium entering the heat pipe heat exchanger 4 is reduced, so that the heat quantity led out by the heat pipe 2 is reduced, the temperature of the reactor core is increased, the power of the reactor 1 is automatically reduced under the action of negative feedback of the temperature of the reactor 1, and the reactor is automatically regulated to reach a new balance state.
In one embodiment of the invention, four brayton cycle systems 7, isolation valves 8 and inlet ports 41 are all arranged, if one isolation valve 8 is closed, one brayton cycle system 7 is isolated, and the generated power is reduced to about 75% of the original power; if one isolation valve 8 is continuously closed, the two brayton cycle systems 7 are isolated, and the generated power is reduced to about 50% of the original power; and if one isolation valve 8 is closed continuously, the three brayton cycle systems 7 are isolated, and the generated power is reduced to about 25% of the original power. In the process, the power of the reactor 1 is automatically adjusted by means of the temperature negative feedback effect.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the device or element in question must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (9)
1. A multi-loop brayton cycle energy conversion system for a heat pipe stack comprising:
a reactor (1);
the heat exchange device comprises a heat pipe heat exchanger (4) and a runner structure, wherein the runner structure is arranged in the heat pipe heat exchanger (4), working media circulate in the runner structure, an interface component is arranged on the heat pipe heat exchanger (4), and the interface component is communicated with the runner structure;
the heat pipe (2) is internally communicated with working media, one end of the heat pipe (2) is inserted into the reactor (1), the other end of the heat pipe (2) is inserted into the heat pipe heat exchanger (4), and a heat preservation layer (3) is coated on the part, located between the reactor (1) and the heat exchange device, of the heat pipe (2);
-a brayton cycle system (7), said brayton cycle system (7) being provided in number, an outlet of said brayton cycle system (7) being in communication with said interface assembly;
a distribution assembly in communication with the interface assembly, and inlets of a plurality of the brayton cycle systems (7) are in communication with the distribution assembly.
2. The multi-loop brayton cycle energy conversion system for a heat pipe stack of claim 1, wherein: the flow channel structure comprises a partition plate (5) and a spiral heat exchange plate (17), wherein the partition plate (5) and the spiral heat exchange plate (17) are fixedly connected in the heat pipe heat exchanger (4), the partition plate (5) and the spiral heat exchange plate (17) divide the heat pipe heat exchanger (4) into an outer annular cavity (9) and an inner space (10), the outer annular cavity (9) and the inner space (10) are spiral flow channels, the outer annular cavity (9) and the inner space (10) are communicated through an annular channel (11), a plurality of heat pipes (2) are arranged in the outer annular cavity (9) and the inner space (10), the heat pipes (2) penetrate through the spiral heat exchange plate (17), and the outer annular cavity (9) and the inner space (10) are communicated with the interface assembly.
3. The multi-loop brayton cycle energy conversion system for a heat pipe stack of claim 2, wherein: the distribution assembly comprises a distribution main pipe (6) and a plurality of isolation valves (8), the distribution main pipe (6) is communicated with the interface assembly, the isolation valves (8) are all communicated with the distribution main pipe (6), and the inlets of the Brayton cycle system (7) are respectively communicated with the isolation valves (8).
4. A multi-loop brayton cycle energy conversion system for a heat pipe stack in accordance with claim 3 wherein: the interface assembly comprises an outlet interface (42) and a plurality of inlet interfaces (41), wherein the outlet interface (42) and the inlet interfaces (41) are fixedly connected to the heat pipe heat exchanger (4), the distribution main pipe (6) is communicated with the inner space (10) through the outlet interface (42), and the outlets of the Brayton cycle system (7) are respectively communicated with the outer layer annular cavity (9) through the inlet interfaces (41).
5. The multi-loop brayton cycle energy conversion system for a heat pipe stack of claim 4, wherein: the inlet interfaces (41) are obliquely arranged towards the same rotation direction.
6. The multi-loop brayton cycle energy conversion system for a heat pipe stack of claim 4, wherein: the Brayton cycle system (7) comprises a generator (12), a steam turbine (13), a heat regenerator (14), a compressor (15) and a cooler (16), wherein a steam inlet of the steam turbine (13) is communicated with an isolation valve (8), a steam outlet of the steam turbine (13) is communicated with an inlet of the heat regenerator (14), an outlet of the heat regenerator (14) is communicated with an inlet of the cooler (16), an outlet of the cooler (16) is communicated with an inlet of the compressor (15), an outlet of the compressor (15) is communicated with another inlet of the heat regenerator (14), another outlet of the heat regenerator (14) is communicated with an inlet interface (41), and the generator (12) and the compressor (15) are in transmission connection with the steam turbine (13).
7. The multi-loop brayton cycle energy conversion system for a heat pipe stack of claim 1, wherein: the working medium is supercritical carbon dioxide.
8. The multi-loop brayton cycle energy conversion system for a heat pipe stack of claim 1, wherein: the heat pipe (2) comprises an evaporation section, a heat insulation section and a condensation section, wherein the heat insulation section is coated with the heat insulation layer (3), the evaporation section is inserted into the reactor (1), and the condensation section is inserted into the heat pipe heat exchanger (4).
9. A method of operating a multi-loop brayton cycle energy conversion system for a heat pipe stack using the multi-loop brayton cycle energy conversion system for a heat pipe stack of any of claims 1-8, comprising the steps of:
s1, fission of nuclear fuel of a reactor core of the reactor (1) generates heat, and the heat is transmitted to the heat pipe heat exchanger (4) through two-phase natural circulation of working medium in the heat pipe (2) to heat the working medium in the heat pipe heat exchanger (4);
s2, enabling the heat-absorbing working medium in the heat pipe heat exchanger (4) to enter the steam turbine (13) through the distribution main pipe (6) to do work so as to drive the generator (12) to generate power, enabling the working medium to further release heat through the heat regenerator (14), and then enabling the working medium to enter the compressor (15) to be pressurized after being further cooled through the cooler (16) so as to complete the whole energy conversion process;
s3, low-temperature gas working media enter from the inlet interface (41) of the heat pipe heat exchanger (4), exchange heat along the outer layer annular cavity (9) and the inner space (10) respectively, and then enter the distribution main pipe (6) through the outlet interface (42);
s4, when the power generation load needs to be reduced, one or more isolation valves (8) are optionally closed, so that one or more groups of Brayton cycle systems (7) can be isolated;
s5, the flow of the low-temperature gas working medium entering the heat pipe heat exchanger (4) is reduced, so that the heat conducted out of the heat pipe (2) is reduced, the temperature of a reactor core is increased, the power of the reactor (1) is automatically reduced under the action of negative feedback of the temperature of the reactor (1), and the reactor is automatically regulated to reach a new balance state.
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| CN202310057175.5A CN116072318B (en) | 2023-01-18 | 2023-01-18 | Multi-loop brayton cycle energy conversion system for heat pipe stacks and method of operation |
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| CN202310057175.5A CN116072318B (en) | 2023-01-18 | 2023-01-18 | Multi-loop brayton cycle energy conversion system for heat pipe stacks and method of operation |
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Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB587285A (en) * | 1944-08-28 | 1947-04-21 | Serck Radiators Ltd | Improvements relating to heat exchange apparatus |
| CN1260468A (en) * | 1999-12-10 | 2000-07-19 | 北京建筑工程学院 | Heat exchanger |
| US20040131138A1 (en) * | 2001-05-25 | 2004-07-08 | Michael Correia | Brayton cycle nuclear power plant and a method of starting the brayton cycle |
| US20090261592A1 (en) * | 2008-04-16 | 2009-10-22 | Kay Thomas P | Solar Energy Conversion Using Brayton System |
| RU91622U1 (en) * | 2009-03-11 | 2010-02-20 | Александр Федорович Зайцев | FLAT PIPE TELEPLATED HEAT EXCHANGER |
| US20120039701A1 (en) * | 2010-08-12 | 2012-02-16 | Nuovo Pignone S.P.A. | Closed Cycle Brayton Cycle System and Method |
| RU2486425C1 (en) * | 2012-01-23 | 2013-06-27 | Закрытое акционерное общество "Научно-исследовательский и конструкторский институт центробежных и роторных компрессоров им. В.Б. Шнеппа" | Heat exchange unit |
| CN103712499A (en) * | 2013-12-27 | 2014-04-09 | 天津商业大学 | Spiral board type heat pipe radiator |
| CN104329979A (en) * | 2014-07-16 | 2015-02-04 | 江苏南通申通机械有限公司 | Heat pipe heat exchanger partition plate and heat pipe heat exchanger evaporation end structure thereof |
| FR3034180A1 (en) * | 2015-03-25 | 2016-09-30 | Korea Atomic Energy Res | |
| CN106595075A (en) * | 2016-11-11 | 2017-04-26 | 李渊 | Small-sized tower-type Stirling energy-storage photo-thermal electric power generation system |
| CN207094595U (en) * | 2017-06-26 | 2018-03-13 | 山东大学 | A kind of supercritical carbon dioxide boiler heating system |
| CN110118160A (en) * | 2018-02-06 | 2019-08-13 | 浙江大学 | Solar energy supercritical carbon dioxide Brayton Cycle system |
| CN111724917A (en) * | 2020-07-17 | 2020-09-29 | 中国工程物理研究院核物理与化学研究所 | Heat pipe stack coupling supercritical CO2Cyclic nuclear power plant and method of use |
| CN111785397A (en) * | 2020-07-17 | 2020-10-16 | 中国工程物理研究院核物理与化学研究所 | Nuclear power device based on heat pipe type reactor and using method |
| CN111968764A (en) * | 2020-08-22 | 2020-11-20 | 西安交通大学 | Liquid nuclear fuel heat pipe reactor power supply system and method for recompression Brayton cycle |
| CN212431873U (en) * | 2020-05-29 | 2021-01-29 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Heat transfer interface device of heat pipe stack |
| CN112397212A (en) * | 2020-11-16 | 2021-02-23 | 哈尔滨工程大学 | Distributed nuclear power engine system |
| CN112542255A (en) * | 2020-12-07 | 2021-03-23 | 西安交通大学 | Direct discharging system for thermoelectric conversion waste heat of heat pipe nuclear reactor and working method |
| CN112577339A (en) * | 2021-01-08 | 2021-03-30 | 山东理工大学 | Compact casing pipe heat regenerator |
| JPWO2021124582A1 (en) * | 2019-12-20 | 2021-06-24 | ||
| CN114877733A (en) * | 2022-04-24 | 2022-08-09 | 东南大学 | Reactor heat pipe quick start-up system |
| CN115342554A (en) * | 2022-07-19 | 2022-11-15 | 广州海洋地质调查局 | Working medium spiral double-circulation type heat exchanger structure, evaporator and condenser |
-
2023
- 2023-01-18 CN CN202310057175.5A patent/CN116072318B/en active Active
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB587285A (en) * | 1944-08-28 | 1947-04-21 | Serck Radiators Ltd | Improvements relating to heat exchange apparatus |
| CN1260468A (en) * | 1999-12-10 | 2000-07-19 | 北京建筑工程学院 | Heat exchanger |
| US20040131138A1 (en) * | 2001-05-25 | 2004-07-08 | Michael Correia | Brayton cycle nuclear power plant and a method of starting the brayton cycle |
| US20090261592A1 (en) * | 2008-04-16 | 2009-10-22 | Kay Thomas P | Solar Energy Conversion Using Brayton System |
| RU91622U1 (en) * | 2009-03-11 | 2010-02-20 | Александр Федорович Зайцев | FLAT PIPE TELEPLATED HEAT EXCHANGER |
| US20120039701A1 (en) * | 2010-08-12 | 2012-02-16 | Nuovo Pignone S.P.A. | Closed Cycle Brayton Cycle System and Method |
| RU2486425C1 (en) * | 2012-01-23 | 2013-06-27 | Закрытое акционерное общество "Научно-исследовательский и конструкторский институт центробежных и роторных компрессоров им. В.Б. Шнеппа" | Heat exchange unit |
| CN103712499A (en) * | 2013-12-27 | 2014-04-09 | 天津商业大学 | Spiral board type heat pipe radiator |
| CN104329979A (en) * | 2014-07-16 | 2015-02-04 | 江苏南通申通机械有限公司 | Heat pipe heat exchanger partition plate and heat pipe heat exchanger evaporation end structure thereof |
| FR3034180A1 (en) * | 2015-03-25 | 2016-09-30 | Korea Atomic Energy Res | |
| CN106595075A (en) * | 2016-11-11 | 2017-04-26 | 李渊 | Small-sized tower-type Stirling energy-storage photo-thermal electric power generation system |
| CN207094595U (en) * | 2017-06-26 | 2018-03-13 | 山东大学 | A kind of supercritical carbon dioxide boiler heating system |
| CN110118160A (en) * | 2018-02-06 | 2019-08-13 | 浙江大学 | Solar energy supercritical carbon dioxide Brayton Cycle system |
| JPWO2021124582A1 (en) * | 2019-12-20 | 2021-06-24 | ||
| CN212431873U (en) * | 2020-05-29 | 2021-01-29 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Heat transfer interface device of heat pipe stack |
| CN111724917A (en) * | 2020-07-17 | 2020-09-29 | 中国工程物理研究院核物理与化学研究所 | Heat pipe stack coupling supercritical CO2Cyclic nuclear power plant and method of use |
| CN111785397A (en) * | 2020-07-17 | 2020-10-16 | 中国工程物理研究院核物理与化学研究所 | Nuclear power device based on heat pipe type reactor and using method |
| CN111968764A (en) * | 2020-08-22 | 2020-11-20 | 西安交通大学 | Liquid nuclear fuel heat pipe reactor power supply system and method for recompression Brayton cycle |
| CN112397212A (en) * | 2020-11-16 | 2021-02-23 | 哈尔滨工程大学 | Distributed nuclear power engine system |
| CN112542255A (en) * | 2020-12-07 | 2021-03-23 | 西安交通大学 | Direct discharging system for thermoelectric conversion waste heat of heat pipe nuclear reactor and working method |
| CN112577339A (en) * | 2021-01-08 | 2021-03-30 | 山东理工大学 | Compact casing pipe heat regenerator |
| CN114877733A (en) * | 2022-04-24 | 2022-08-09 | 东南大学 | Reactor heat pipe quick start-up system |
| CN115342554A (en) * | 2022-07-19 | 2022-11-15 | 广州海洋地质调查局 | Working medium spiral double-circulation type heat exchanger structure, evaporator and condenser |
Non-Patent Citations (4)
| Title |
|---|
| GUANGHUI JIAO, GENGLEI XIA, ZHOU TAO, YUEPENG BI: "Study on Flow and Heat Transfer Performance of Space Reactor Radiator Water Heat Pipe", 2022 29TH INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING, vol. 4 * |
| MOHAMED S. EL-GENK, JEAN-MICHEL P. TOURNIER: "USES OF LIQUID-METAL AND WATER HEAT PIPES IN SPACE REACTOR POWER SYSTEMS", FRONTIERS IN HEAT PIPES * |
| ZEQIN ZHANG, CHENGLONG WANG: "HEART, a specific code for thermal-electrical analysis of heat pipe cooled nuclear reactor", INTERNATIONAL JOURNAL OF THERMAL SCIENCES, vol. 179 * |
| 焦广慧: "高温碱金属热管稳态流动传热特性研究", 中国核学会2021年学术年会 * |
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