CN114893627B - Air-cooled micro-reactor straight pipe type main pipeline - Google Patents
Air-cooled micro-reactor straight pipe type main pipeline Download PDFInfo
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- CN114893627B CN114893627B CN202210439089.6A CN202210439089A CN114893627B CN 114893627 B CN114893627 B CN 114893627B CN 202210439089 A CN202210439089 A CN 202210439089A CN 114893627 B CN114893627 B CN 114893627B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
- F16L9/19—Multi-channel pipes or pipe assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
- F16L39/005—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies for concentric pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with several corrugations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/143—Pre-insulated pipes
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention relates to a straight pipe type main pipeline of an air-cooled micro-reactor, which is used for connecting a reactor system and a power generation system. The straight pipe type main pipeline adopts the design scheme of the inner double-layer pipe and the outer double-layer pipe, adopts key technologies such as heat insulation, thermal compensation and the like, saves the arrangement space to a great extent, and simultaneously gives consideration to the effects of heat preservation and heat insulation so as to ensure the system function. The invention provides an arrangement idea for the main pipeline of the air-cooled micro-reactor.
Description
Technical Field
The invention belongs to the nuclear energy pipeline design technology, and particularly relates to a straight pipe type main pipeline of an air-cooled micro-reactor.
Background
With the rapid development of countries, the demands of various industries for energy are rapidly increasing. In order to meet the requirements of China on efficient and clean energy sources, the exploration of nuclear energy cannot be stopped. Compared with the traditional fossil fuel power generation of other coal, natural gas and the like, the nuclear power has the natural advantages of cleanness, high energy density, almost no emission of greenhouse gases and the like. Therefore, optimizing the energy structure in China and further developing the nuclear energy industry are imperative.
The air-cooled micro-reactor is used as an advanced reactor type of a fourth-generation nuclear power system developed in China, and has the special advantages of miniaturization and flexible arrangement besides the safety, high efficiency and stable output of a common nuclear power plant. The container can be transported easily, assembled simply and quickly and arranged under special application situations, and has remarkable advantages for emergency situations such as post-disaster reconstruction, preemptive rescue and the like.
At present, the gas-cooled micro-reactor in China is still in an exploration stage, and any experimental or commercial gas-cooled micro-reactor is not built in China, so that the research on the gas-cooled micro-reactor is relatively less, and the research stage is still in.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art, provides a straight pipe type main pipeline design scheme of an air-cooled micro-reactor, and provides technical support for development of the air-cooled micro-reactor.
The technical scheme of the invention is as follows: the utility model provides an air-cooled micro-pile straight tube type trunk line for connect reactor system and power generation system, the trunk line includes outer pipeline, inlayer pipeline, and is fixed through a plurality of support piece that annular evenly arranged between inlayer pipeline and the outer pipeline.
Further, the air-cooled micro-stack straight pipe type main pipe as described above, wherein the inner pipe and the outer pipe are both straight pipes, and are in a coaxial state when installed.
Further, the air-cooled micro-stack straight pipe type main pipeline comprises an outer layer flow channel formed between the outer layer pipeline and the inner layer pipeline, an inner layer flow channel is formed inside the inner layer pipeline, and operation working mediums in the inner layer flow channel and the outer layer flow channel are helium; the working medium in the outer-layer flow channel is helium with relatively low temperature and high pressure, the flowing direction is from the power generation system to the reactor system, the working medium in the inner-layer flow channel is helium with relatively high temperature and low pressure, and the flowing direction is from the reactor system to the power generation system.
Further, the air-cooled micro-stack straight pipe type main pipe as described above, wherein the inner pipe comprises an outer shell, a middle heat insulation layer and a lining which are coaxially arranged in sequence.
Furthermore, thermal displacement compensation mechanisms are respectively arranged on the shell and the inner liner of the inner pipeline; the shell thermal displacement compensation mechanism adopts a cylindrical metal corrugated pipe expansion joint, and the lining thermal displacement compensation mechanism adopts a multi-section socket structure.
Further, as described above, the connecting end of the inner layer pipeline and the reactor system is provided with the annular carbon brick, and the annular carbon brick is always in a pressed state when the process is running due to the fact that the inner layer pipeline shell thermal displacement compensation mechanism provides a certain degree of pre-pressure during installation, so that the tightness is ensured.
Further, the outer layer pipeline comprises an outer shell, an interruption mechanism and an end face leakage detection mechanism, two ends of the outer layer pipeline are sealed by adopting flange faces and double-layer metal C-shaped sealing rings, the end face leakage detection mechanism is arranged between the inner layer and the outer layer of the double-layer metal C-shaped sealing rings, and the interruption mechanism is arranged in the middle of the outer shell and used for dismounting during shutdown and material changing.
Further, the gas cooled micro-reactor straight pipe type main pipe is as described above, wherein the reactor system adopts a horizontal pressure vessel, and the power generation system adopts an integrated helium turbine.
The beneficial effects of the invention are as follows: the invention provides a pipeline arrangement thought for the fourth generation nuclear power reactor in China, and the requirements of miniaturization and integration are met to the maximum extent on the basis of ensuring the functions of various devices. The method provides partial earlier stage preparation for later stage container transportation, quick delivery and other requirements, and fills the blank in the field of air-cooled micro-stack related pipeline arrangement.
Drawings
FIG. 1 is a schematic diagram of the overall arrangement of the systems of the air-cooled micro-stack of the present invention;
FIG. 2 is a schematic diagram of the installation of a main pipeline according to the present invention;
FIG. 3 is a schematic view of the outer layer pipeline structure of the main pipeline of the invention;
fig. 4 is a schematic diagram of an inner layer pipeline structure of a main pipeline according to the present invention.
In the figure:
1. a reactor system; 2. a main pipe; 3. a power generation system; 4. reactor system equipment; 5. a power generation system apparatus; 6. an outer layer pipeline of the main pipeline; 7. an outer layer runner of the main pipeline; 8. an inner layer pipeline of the main pipeline; 9. an inner layer runner of the main pipeline; 10. an outer layer pipeline sealing structure of the main pipeline; 11. the inner layer pipeline shell of the main pipeline seals the structure; 12. lining sealing structure of inner layer pipeline of main pipeline; 13. a main pipeline inner layer pipeline thermal displacement compensation mechanism (a cylindrical metal corrugated pipe expansion joint); 14. a support; 15. an outer pipe outer shell of the main pipe; 16. the outer layer pipeline of the main pipeline is movably sleeved with a flange; 17. an outer layer pipeline interruption structure of the main pipeline; 18. the main pipeline end face leakage detecting mechanism; 19. the end part of the outer layer pipeline of the main pipeline is sealed; 20. annular carbon bricks; 21. cylindrical metal bellows expansion joint; 22. an inner layer pipeline shell of the main pipeline; 23. the middle heat insulation layer of the inner pipeline of the main pipeline; 24. lining an inner pipeline of the main pipeline; 25. lining sealing structure of inner layer pipeline of main pipeline; 26. the inner layer pipeline shell of the main pipeline seals the structure; 27. the inner layer pipeline of the main pipeline is lined with a thermal displacement compensation structure (socket structure).
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a main pipeline arrangement scheme of an air-cooled micro-reactor, which is shown in figure 1, and comprises a reactor system 1, a main pipeline 2 and a power generation system 3. It should be clear to those skilled in the art that for a complete air cooled micro-stack, these systems are not included, but that the connection of the main pipes is emphasized in the present invention, and that other systems are not described in the present invention, but are well known in the art.
The reactor system 1 and the power generation system 3 are connected by a main pipe 2.
As shown in fig. 2, the main pipe 2 is of a double-layer sleeve structure, and comprises an outer pipe 6 and an inner pipe 8, wherein the outer pipe 6 and the inner pipe 8 are both straight pipes, the inner pipe and the outer pipe are fixed through support pieces 14 in the pipe, a plurality of support pieces 14 are annularly and uniformly arranged between the inner pipe and the outer pipe, and the inner pipe 8 and the outer pipe 6 are coaxially arranged between the reactor system equipment 4 and the power generation system equipment 5.
The space between the outer layer pipe 6 and the inner layer pipe 8 forms an outer layer flow channel 7, wherein the flowing working medium is in a relatively low-temperature and high-pressure state, and the flowing working medium flows from the power generation system 3 to the reactor system 1, and the exhaust gas serving as working medium is reheated in the reactor module. The inner space of the inner layer pipeline 8 is an inner layer runner 9, wherein the flowing working medium is in a relatively high-temperature and low-pressure state, and flows from the reactor system 1 to the power generation system 3 to serve as reheated gas, and the reheated gas is conveyed to the power generation system to generate power.
As shown in fig. 3, the outer pipe 6 is composed of an outer shell 15, a main pipe outer pipe loop flange 16, an interruption structure 17, an end face leakage detecting mechanism 18, a main pipe outer pipe end seal 19 and the like.
The main pipe outer pipe looper flange 16 is an end fastening structure, and after the outer pipe and the side equipment thereof are fastened by using a hoisting tool, corresponding bolts or nuts are screwed to complete the fastening.
The outer layer pipeline interruption structure 17 of the main pipeline is reserved for the reactor system refueling process, the main pipeline is required to be disassembled again in the refueling process, but the space occupied by flanges at two ends is larger, the fastening moment is firm, and the outer layer is provided with a corresponding shielding structure, so that the main pipeline is difficult to be disassembled from the end part. Therefore, the middle part of the pipeline is provided with the outer pipeline interruption structure 17 of the main pipeline, and the main pipeline is conveniently disconnected during material changing.
The outer layer of tubing 6 serves as one of the sealing boundaries of the entire main circuit, requiring more stringent requirements for material and quality assurance. At the connected reactor system plant 4 and power generation system plant 5, the main pipe outer pipe sealing structure 19 on both sides may use different sealing methods according to circumstances. In the invention, the outer pipeline sealing structures 19 of the main pipelines at two ends are sealed in a mode of adding double-layer sealing rings on flange surfaces, the double-layer sealing rings are concentrically arranged on the flange surfaces of the pipelines, the sealing rings are metal C-shaped sealing rings, nickel-based alloys are used as base materials, and silver-plated C-shaped coating films are attached to the surfaces of the sealing rings. The sealing structure is widely applied to the high-temperature pipeline of the nuclear power plant, and can be ensured to run stably, safely and reliably.
The detection point of the main pipeline end face leakage detection mechanism 18 is positioned between the coaxial double-layer sealing rings. In the two layers of sealing rings, the inner layer of sealing ring has a complete sealing function as a sealing function. The outer sealing ring serves as a protective measure, and plays a role in preventing gas diffusion when the inner sealing fails. The main pipe end face leakage detecting mechanism 18 between the two sealing rings indicates that the sealing function of the inner sealing ring is failed when the main pipe end face leakage detecting mechanism detects working medium gas, and the main pipe end face leakage detecting mechanism needs to be maintained.
As shown in fig. 4, the inner pipe 8 is composed of a main pipe inner pipe annular carbon brick 20, a main pipe inner pipe casing thermal displacement compensation mechanism 21, a main pipe inner pipe casing 22, a main pipe inner pipe middle heat insulation layer 23, a main pipe inner pipe liner 24, a main pipe inner pipe liner sealing structure 25, a main pipe inner pipe casing sealing structure 26, a main pipe inner pipe liner thermal displacement compensation mechanism 27, and the like.
The outer shell 22 and the inner lining 24 of the inner pipeline 8 are part of the inner pipeline, but the middle part is separated by the heat insulation layer 23, and the working condition temperature difference of the two sides is large. The calculated thermal displacements are thus differentiated, so that the thermal displacements are compensated for using different thermal displacement compensation structures, namely a main pipe inner pipe casing thermal displacement compensation mechanism 21 and a main pipe inner pipe liner thermal displacement compensation mechanism 27, respectively. Wherein, the main pipeline inner layer pipeline shell thermal displacement compensation mechanism 21 is designed as a cylindrical metal corrugated pipe expansion joint, and the main pipeline inner layer pipeline lining thermal displacement compensation mechanism 27 is designed as a multi-section socket structure to ensure that thermal displacement is eliminated. The adjacent two ends of the socket structure are provided with a male head at one end and a female head at one end, the inner wall of the female head and the outer wall of the male head are of mutually matched ladder-shaped structures at the connecting part of the female head and the male head, and the connecting part can be further provided with a high-temperature-resistant wear-resistant coating which is used for ensuring the smooth installation of the female head and the male head and can slide at high temperature.
The middle heat insulation layer 23 of the inner pipeline of the main pipeline can keep a grid-shaped or flocculent structure (materials can be known heat insulation materials) besides good heat insulation performance under the high-temperature working condition when in operation so as to ensure the optimal heat insulation capability, and the working medium of the inner flow channel can be ensured to the greatest extent not to influence the inner pipeline shell 22 of the main pipeline.
The inner pipeline lining sealing structure 25 and the outer pipeline shell sealing structure 26 of the main pipeline should be flexibly changed according to the design, and can be realized by adopting a traditional pipeline sealing structure or a specially designed pipeline sealing structure. The main pipe inner pipe lining sealing structure 25 is not additionally designed in the present invention, and the gas sealing between the left main pipe inner pipe shell 22 and the power generation system equipment 5 is completed only by means of the main pipe inner pipe shell sealing structure 26 together with the sealing structure. And one end of the opposite-side connection reactor system equipment 4 is provided with a circular ring-shaped carbon brick 20, and when the circular ring-shaped carbon brick is installed, the circular ring-shaped carbon brick is provided with a certain degree of pre-pressure through the bellows expansion joint structure in the main pipeline inner pipeline shell thermal displacement compensation mechanism 21, so that the main pipeline inner pipeline carbon brick 20 is always in a pressed state to finish sealing under the complete process flow.
The invention provides a gas-cooled micro-stack pipeline arrangement scheme, which is characterized in that in practical application, partial structures are preloaded as follows:
the main pipeline inner layer pipeline carbon brick 20, the main pipeline inner layer pipeline shell thermal displacement compensation mechanism 21, the main pipeline inner layer pipeline shell 22, the main pipeline inner layer pipeline middle heat insulation layer 23, the main pipeline inner layer pipeline lining 24, the main pipeline inner layer pipeline lining sealing structure 25, the main pipeline inner layer pipeline shell sealing structure 26 and the main pipeline inner layer pipeline lining thermal displacement compensation mechanism 27 form the main pipeline inner layer pipeline 8.
The main pipeline outer shell 15, the main pipeline outer pipeline looper flange 16, the main pipeline outer pipeline interruption structure 17, the main pipeline end face leakage detection mechanism 18 and the main pipeline outer pipeline end seal 19 form the main pipeline outer pipeline 6.
All designs in the invention adopt integrated designs. After the packaging, the space of the system is compressed as much as possible on the premise of ensuring the function, so that the miniaturization of the whole air-cooled micro-stack is ensured, and preconditions are provided for the purposes of subsequent container transportation, flexible delivery and the like.
Meanwhile, due to the modularized design, the interface of each system ensures consistency and universality as much as possible, so that quick disassembly and maintenance are possible, and convenience is provided for mass production.
The interruption structure in the middle of the pipeline can be used for integrally dismantling the reactor system under the condition of not dismantling other structures of the whole air-cooled micro-reactor, thereby providing convenience for overhauling and reloading the reactor system. The gas-cooled micro-stack can be reused by replacing fuel, and resources are saved to a certain extent.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (9)
1. The utility model provides a gas-cooled micro-reactor straight tube type trunk line for connect reactor system (1) and power generation system (3), its characterized in that, trunk line (2) are including outer pipeline (6), inlayer pipeline (8), and a plurality of support piece (14) through annular evenly arranging between inlayer pipeline (8) and the outer pipeline (6) are fixed, outer pipeline (6) include external casing (15), interrupt mechanism (17) and terminal surface leak hunting mechanism (18), and the both ends of outer pipeline adopt the flange face to add double-deck metal C type sealing washer and seal, and set up between the inlayer and the skin of double-deck metal C type sealing washer terminal surface leak hunting mechanism (18), interrupt mechanism (17) set up in the middle part of external casing (15) for dismouting when the shutdown reloading.
2. The main pipe of an air-cooled micro pile straight pipe according to claim 1, characterized in that the inner pipe (8) and the outer pipe (6) are both straight pipes and are arranged in a coaxial state.
3. The main pipe of the air-cooled micro-stack straight pipe type according to claim 1, wherein an outer layer flow channel (7) is formed between the outer layer pipe (6) and the inner layer pipe (8), an inner layer flow channel (9) is formed inside the inner layer pipe (8), and the operation working mediums in the inner layer flow channel and the outer layer flow channel are helium.
4. A main pipe of a gas cooled micro-reactor straight pipe as claimed in claim 3, characterized in that the working medium in the outer flow channel (7) is helium gas with relatively low temperature and high pressure, the flow direction is from the power generation system (3) to the reactor system (1), the working medium in the inner flow channel (9) is helium gas with relatively high temperature and low pressure, and the flow direction is from the reactor system (1) to the power generation system (3).
5. The main pipe of an air cooled micro-stack as claimed in claim 1, wherein the inner pipe (8) comprises, in order, an outer shell (22), an intermediate insulating layer (23) and an inner liner (24) coaxially arranged.
6. A main pipe of an air cooled micro-stack as claimed in claim 5, characterized in that thermal displacement compensation means are provided on the outer shell (22) and the inner liner (24) of the inner pipe (8), respectively.
7. An air cooled micro-stack straight pipe type main pipe as claimed in claim 6 wherein the outer shell thermal displacement compensation mechanism adopts a cylindrical metal bellows expansion joint (21), and the inner lining thermal displacement compensation mechanism adopts a multi-section socket structure (27).
8. A main pipe as claimed in claim 6, characterized in that the connection end of the inner pipe (8) and the reactor system (1) is provided with annular carbon bricks (20), and the annular carbon bricks are always pressed when the process is running by providing a certain degree of pre-compression through the thermal displacement compensation mechanism of the inner pipe shell during installation, thereby ensuring tightness.
9. A main pipe of an air cooled micro-reactor as claimed in claim 1, wherein the reactor system (1) employs a horizontal pressure vessel and the power generation system (3) employs an integrated helium turbine.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210439089.6A CN114893627B (en) | 2022-04-25 | 2022-04-25 | Air-cooled micro-reactor straight pipe type main pipeline |
| PCT/CN2022/133411 WO2023207052A1 (en) | 2022-04-25 | 2022-11-22 | Gas-cooled micro-reactor straight-pipe-type main pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210439089.6A CN114893627B (en) | 2022-04-25 | 2022-04-25 | Air-cooled micro-reactor straight pipe type main pipeline |
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| Publication Number | Publication Date |
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| CN114893627A CN114893627A (en) | 2022-08-12 |
| CN114893627B true CN114893627B (en) | 2023-09-15 |
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| CN202210439089.6A Active CN114893627B (en) | 2022-04-25 | 2022-04-25 | Air-cooled micro-reactor straight pipe type main pipeline |
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| WO (1) | WO2023207052A1 (en) |
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| CN114893627B (en) * | 2022-04-25 | 2023-09-15 | 中国核电工程有限公司 | Air-cooled micro-reactor straight pipe type main pipeline |
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2022
- 2022-04-25 CN CN202210439089.6A patent/CN114893627B/en active Active
- 2022-11-22 WO PCT/CN2022/133411 patent/WO2023207052A1/en unknown
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| Publication number | Publication date |
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| CN114893627A (en) | 2022-08-12 |
| WO2023207052A1 (en) | 2023-11-02 |
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