CN112977488A - Novel locomotive power system - Google Patents
Novel locomotive power system Download PDFInfo
- Publication number
- CN112977488A CN112977488A CN202110298813.3A CN202110298813A CN112977488A CN 112977488 A CN112977488 A CN 112977488A CN 202110298813 A CN202110298813 A CN 202110298813A CN 112977488 A CN112977488 A CN 112977488A
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- China
- Prior art keywords
- reactor
- locomotive
- temperature gas
- turbine
- fast neutron
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C7/00—Other locomotives or motor railcars characterised by the type of motive power plant used; Locomotives or motor railcars with two or more different kinds or types of motive power
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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
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a novel locomotive power system, and relates to the technical field of reactor design. Comprising a reactor vessel and a printed circuit heat exchanger; the reactor vessel is internally provided with a compact high-temperature gas-cooled fast neutron reactor, a turbine, a regenerator, a compressor and a generator; the compact high-temperature gas-cooled fast neutron reactor is connected with a turbine pipeline, the turbine is connected with a heat regenerator pipeline, the heat regenerator is connected with a printed circuit heat exchanger pipeline, the printed circuit heat exchanger is connected with a compressor pipeline, the compressor is connected with the heat regenerator pipeline, and the heat regenerator is connected with the compact high-temperature gas-cooled fast neutron reactor pipeline; the turbine is in power connection with the generator. The invention greatly increases the endurance time of the locomotive, gets rid of the limitation of fuel on the traditional thermal locomotive, does not need additional power supply and ensures the flexibility of the locomotive; the system not only can be used as power drive of the locomotive, but also can be directly coupled to external equipment to be used as a mobile power supply to supply power to the external equipment.
Description
Technical Field
The invention relates to the technical field of reactor design, in particular to a novel locomotive power system.
Background
With the continuous development of SMR technology of small modular reactors, the volume of the reactor is greatly reduced, the structure is more compact, and the safety of the reactor is also greatly improved. The method has the advantages of long endurance time, stability, reliability, strong environmental applicability and the like, and is very suitable for being used as a power system of a locomotive.
Currently, the power system of a locomotive mainly comprises a steam engine, a diesel engine, a gas turbine and electric drive. Steam locomotive, diesel locomotive, gas turbine locomotive, etc. all belong to the heating power locomotive. The locomotive needs to carry fuel, the weight and the overall dimension of the locomotive are respectively restricted by the axle weight and the railway clearance, the endurance time of the locomotive is also limited by refueling, and some special military requirements cannot be met. An electric locomotive is a locomotive which is transmitted to a substation along a railway by an external power station and then supplies electric energy through a contact net over the rail or a third rail laid on one side of the rail. The locomotive has the advantages of high power, strong short-time overload capacity, high running speed and the like, but the locomotive can only run on a line which is provided with a contact net or a line which is provided with a third rail and supplies power, and the maneuverability and the flexibility are poor.
Disclosure of Invention
The present invention is directed to a novel power system for a locomotive to solve the above problems.
To achieve the above objects, the present invention provides a novel locomotive power system, comprising a reactor vessel and a printed circuit heat exchanger; the reactor vessel is internally provided with a compact high-temperature gas-cooled fast neutron reactor, a turbine, a regenerator, a compressor and a generator; the outlet of the compact high-temperature gas-cooled fast neutron reactor is connected with the inlet pipeline of the turbine, the outlet of the turbine is connected with the heat release side inlet pipeline of the heat regenerator, the heat release side outlet of the heat regenerator is connected with the inlet pipeline of the printed circuit heat exchanger, the outlet of the printed circuit heat exchanger is connected with the inlet pipeline of the compressor, the outlet of the compressor is connected with the heat absorption side inlet pipeline of the heat regenerator, and the heat absorption side outlet of the heat regenerator is connected with the inlet pipeline of the compact high-temperature gas-cooled fast neutron reactor to form a complete loop; using supercritical carbon dioxide as working medium, and circulating; the turbine is in power connection with a generator; the reactor vessel serves to protect system components while preventing radioactive material from leaking.
Further, compact high temperature gas-cooled fast neutron reactor includes the shielding layer, the shielding layer inboard is provided with the reflection stratum, be provided with a plurality of control commentaries on classics thigh in the reflection stratum, the reflection stratum inboard is provided with a plurality of fuel assembly.
Furthermore, the reactor core of the compact high-temperature gas-cooled fast neutron reactor is provided with an emergency shutdown device.
Furthermore, the cross section of the fuel assembly is hexagonal, the fuel assembly is arranged in the compact high-temperature gas-cooled fast neutron reactor in a hexagonal shape, and a plurality of fuel rods are arranged in the fuel assembly, enough gaps are reserved among the fuel rods for supercritical carbon dioxide to flow, so that the reactor is cooled, and the heat of the reactor core is taken out.
Furthermore, UN with high enrichment degree is arranged among the fuel rods.
Further, the shielding layer is B4And C, a cylindrical barrel, wherein the reflecting layer is PbO.
Compared with the prior art, the invention has the following advantages:
the invention utilizes the advantages of compact structure, long endurance time, stability, reliability, strong environmental applicability and the like of the small modular reactor, utilizes the nuclear power to drive the locomotive, greatly increases the endurance time of the locomotive, gets rid of the limitation of fuel on the traditional thermal locomotive, does not need additional power supply, and ensures the flexibility of the locomotive. The system not only can be used as power drive of the locomotive, but also can be directly coupled to external equipment to be used as a mobile power supply to supply power to the external equipment.
Drawings
Fig. 1 is a schematic structural diagram of a novel locomotive power system according to the present invention.
FIG. 2 is a top view of a compact high-temperature gas-cooled fast neutron reactor of a novel locomotive power system.
FIG. 3 is a front view of a novel locomotive power compact high-temperature gas-cooled fast neutron reactor of the invention.
Wherein, 1-compact high temperature gas cooling fast neutron reactor; 2-a turbine; 3-a compressor; 4-a heat regenerator; 5-a generator; 6-printed circuit heat exchanger; 7-a traction motor; 8-a reactor vessel; 11-controlling the rotating drum; 12-a shielding layer; 13-a fuel assembly; 14-scram device; 15-reflective layer.
Detailed Description
To achieve the above objects and advantages, the present invention provides a technical means and a structure thereof, which are described in detail with reference to the accompanying drawings.
As shown in the attached drawings, the invention provides a novel locomotive power system, which comprises a reactor vessel 8 and a printed circuit heat exchanger 6; the reactor vessel 8 is internally provided with a compact high-temperature gas-cooled fast neutron reactor 1, a turbine 2, a heat regenerator 3, a compressor 4 and a generator 5; the compact high-temperature gas-cooled fast neutron reactor 1 is connected with a turbine 2 through a pipeline, the turbine 2 is connected with a heat regenerator 3 through a pipeline, the heat regenerator 3 is connected with a printed circuit heat exchanger 6 through a pipeline, the printed circuit heat exchanger 6 is connected with a compressor 4 through a pipeline, the compressor 4 is connected with the heat regenerator 3 through a pipeline, and the heat regenerator 3 is connected with the compact high-temperature gas-cooled fast neutron reactor 1 through a pipeline to form a complete loop; using supercritical carbon dioxide as working medium, and circulating; the turbine 2 is in power connection with a generator 5; the reactor vessel 8 serves to protect system components while preventing radioactive material from leaking out.
The supercritical carbon dioxide is used for directly leading out the heat of the reactor core of the compact high-temperature gas-cooled fast neutron reactor 1 and generating electric energy through closed Brayton cycle, and the inlet temperature and the outlet temperature are 375-400 ℃ and 600-650 ℃ respectively. The high-temperature supercritical carbon dioxide directly flows through the turbine 2 to drive the generator 5 to generate electric energy, and the locomotive is driven to run by the traction motor 7. The low-pressure side of the heat regenerator 3 recovers the high-temperature waste heat at the outlet of the turbine 2 and transmits the high-temperature waste heat to the high-pressure side supercritical carbon dioxide, so that the inlet temperature of the reactor core and the system efficiency are improved. The total system efficiency varies between 30% and 45% by passing the regenerator 3 and then rejecting waste heat to the air through the printed circuit heat exchanger 6. The entire system, except for the printed circuit heat exchanger 6, is integrated into a locomotive loadable reactor vessel 8, the reactor vessel 8 serving to protect the system components while preventing radioactive material from leaking. By adopting the novel nuclear power locomotive, the thermal power of the reactor core is 36MW, the electric power of 10-15MW can be provided, the basic power requirement of the locomotive is met, and the locomotive can continuously run for more than 15 years under the condition of not needing to be oiled. The system can also be directly coupled with an external device to be used as a mobile power supply to supply power to the external device.
The scheme adopts a compact high-temperature gas-cooled fast neutron reactor 1, drum control and Brayton cycle thermoelectric conversion. With reference to the drawings, the compact high-temperature gas-cooled fast neutron reactor 1 comprises 18 fuel assemblies 13, and each fuel assembly 13 comprises 91 fuel rods, 1638 fuel rods in total, and is arranged in a hexagonal shape. The fuel rod adopts high enrichment UN, and has the advantages of higher melting point, good thermal conductivity, good stability under irradiation and less loss of burnup reactivity. Enough clearance is left among the fuel rods for the supercritical carbon dioxide to flow, cool the reactor and bring out the heat of the reactor core. An emergency shutdown device 14 is provided in the core to rapidly reduce the reactivity of the core in the event of an accident. The fuel assembly 13 is surrounded by an outer PbO reflective layer 15, and 12 sets of control drums 11 are designed in the reflective layer 15 to control the reactivity. The reactor core is integrally arranged at B4The shielding layer 12 formed by the cylindrical body of C is used for shielding the core radiation. The diameter of the core is about 1.6m, the height of the active region is 1.4m, the core can provide 36MW of heat power, and the core life is more than 15 years.
The above description is only a preferred embodiment of the present invention, and not all embodiments, and all structural changes made under the teaching of the present invention should be understood as belonging to the protection scope of the present invention.
Claims (6)
1. A novel locomotive power system is characterized by comprising a reactor container and a printed circuit heat exchanger; the reactor vessel is internally provided with a compact high-temperature gas-cooled fast neutron reactor, a turbine, a regenerator, a compressor and a generator; the outlet of the compact high-temperature gas-cooled fast neutron reactor is connected with the inlet pipeline of the turbine, the outlet of the turbine is connected with the heat release side inlet pipeline of the heat regenerator, the heat release side outlet of the heat regenerator is connected with the inlet pipeline of the printed circuit heat exchanger, the outlet of the printed circuit heat exchanger is connected with the inlet pipeline of the compressor, the outlet of the compressor is connected with the heat absorption side inlet pipeline of the heat regenerator, and the heat absorption side outlet of the heat regenerator is connected with the inlet pipeline of the compact high-temperature gas-cooled fast neutron reactor to form a complete loop; using supercritical carbon dioxide as working medium, and circulating; the turbine is in power connection with a generator; the reactor vessel serves to protect system components while preventing radioactive material from leaking.
2. The locomotive power system of claim 1, wherein the compact high temperature gas-cooled fast neutron reactor comprises a shielding layer, a reflective layer is disposed inside the shielding layer, a plurality of control turns are disposed in the reflective layer, and a plurality of fuel assemblies are disposed inside the reflective layer.
3. The locomotive power system of claim 2, wherein the core of the compact high temperature gas-cooled fast neutron reactor is provided with an emergency shutdown device.
4. The locomotive power system of claim 2, wherein the fuel assembly has a hexagonal cross-section and is arranged in a hexagonal shape inside the compact high temperature gas-cooled fast neutron reactor, and a plurality of fuel rods are arranged inside the fuel assembly to have sufficient clearance for supercritical carbon dioxide to flow, cool the reactor and take out core heat.
5. The locomotive power system of claim 4, wherein said inter-fuel rod is a high enrichment UN.
6. The locomotive power system of claim 2, wherein said shielding is B4And C, a cylindrical barrel, wherein the reflecting layer is PbO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110298813.3A CN112977488A (en) | 2021-03-20 | 2021-03-20 | Novel locomotive power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110298813.3A CN112977488A (en) | 2021-03-20 | 2021-03-20 | Novel locomotive power system |
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| Publication Number | Publication Date |
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| CN112977488A true CN112977488A (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110298813.3A Pending CN112977488A (en) | 2021-03-20 | 2021-03-20 | Novel locomotive power system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2392461C1 (en) * | 2008-10-28 | 2010-06-20 | Николай Борисович Болотин | Power plant of nuclear gas turbine locomotive |
| CN201980231U (en) * | 2011-02-25 | 2011-09-21 | 万金林 | Non-fossil fuel power device for new energy train |
| CN104709292A (en) * | 2015-03-02 | 2015-06-17 | 龚秋声 | Nuclear power train |
| US20160027536A1 (en) * | 2013-04-25 | 2016-01-28 | Los Alamos National Security , LLC | Mobile heat pipe cooled fast reactor system |
| CN112406914A (en) * | 2020-12-02 | 2021-02-26 | 西南交通大学 | Nuclear power high-speed train operation system and operation method |
-
2021
- 2021-03-20 CN CN202110298813.3A patent/CN112977488A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2392461C1 (en) * | 2008-10-28 | 2010-06-20 | Николай Борисович Болотин | Power plant of nuclear gas turbine locomotive |
| CN201980231U (en) * | 2011-02-25 | 2011-09-21 | 万金林 | Non-fossil fuel power device for new energy train |
| US20160027536A1 (en) * | 2013-04-25 | 2016-01-28 | Los Alamos National Security , LLC | Mobile heat pipe cooled fast reactor system |
| CN104709292A (en) * | 2015-03-02 | 2015-06-17 | 龚秋声 | Nuclear power train |
| CN112406914A (en) * | 2020-12-02 | 2021-02-26 | 西南交通大学 | Nuclear power high-speed train operation system and operation method |
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