CN113871034A - Control rod and air-cooled micro-reactor - Google Patents
Control rod and air-cooled micro-reactor Download PDFInfo
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- CN113871034A CN113871034A CN202111093529.9A CN202111093529A CN113871034A CN 113871034 A CN113871034 A CN 113871034A CN 202111093529 A CN202111093529 A CN 202111093529A CN 113871034 A CN113871034 A CN 113871034A
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- control rod
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- outer sleeve
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/10—Construction of control elements
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C5/00—Moderator or core structure; Selection of materials for use as moderator
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C7/00—Control of nuclear reaction
- G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
- G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
- G21C7/10—Construction of control elements
- G21C7/11—Deformable control elements, e.g. flexible, telescopic, articulated
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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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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
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- Monitoring And Testing Of Nuclear Reactors (AREA)
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Abstract
The invention discloses a control rod and an air-cooled micro-reactor. The control rod effectively reduces the height of the control rod, so that the structure of the control rod is more compact, meanwhile, the occupied area of the control rod in the transportation process is reduced, and the transportation convenience and the concealment performance can be improved.
Description
Technical Field
The invention belongs to the technical field of nuclear industry, and particularly relates to a control rod and an air-cooled micro-reactor comprising the same.
Background
The micro-stack is a wave of heat surge which is emerged in the large tide of development of small module stacks which are raised in the global nuclear industry in the year. The micro-stack has the characteristics of small power, small radioactive source, small size, small occupied area, high inherent safety and the like, and is already put into practical use at present. The pressurized water micro-reactor is mainly applied to a land and underwater nuclear power system; the liquid metal cooled reactor is successfully applied to underwater and space nuclear power systems; the simplification, the compact structure, the volume miniaturization and the weight lightening of the micro nuclear power system are key technologies required to be overcome in the micro-stack research and development.
The reactor control rod assembly has the functions of starting and stopping the reactor, changing power and protecting the reactor. In the prior art, the control rods are suspended at the upper part of the reactor core or inserted into the reactor core for a short time, the control rods occupy a large amount of space at the upper part of the reactor core, and the geometric dimension of the micro-reactor in height is obviously increased by the control rod assembly, so that the transportation and the transfer of the micro-reactor are not facilitated, and the concealment in the transfer process is not facilitated.
In addition, the outlet temperature of the reactor core of the gas-cooled micro-reactor is high, the control rod is positioned in a high-temperature environment, in addition, the temperature of the control rod can be further increased by the heat released in the process that the neutron absorber absorbs neutrons, and the control rod is difficult to bear long-term service at the high temperature by adopting the traditional design.
Disclosure of Invention
The present invention is directed to provide a control rod and an air-cooled micro-reactor including the same, which are compact in structure and can effectively reduce the height of a micro-core.
In order to solve the problems, the invention adopts the following technical scheme:
a control rod includes an inner sleeve nested within an outer sleeve, the inner sleeve being axially movable to extend out of or retract into the interior of the outer sleeve.
Preferably, the top end of the inner sleeve is provided with a first tray, the diameter of the first tray is smaller than the inner diameter of the outer sleeve, the bottom end of the outer sleeve is provided with a first limiting ring, and the diameter of the first tray is smaller than the inner diameter of the outer sleeve and larger than the inner diameter of the first limiting ring.
Preferably, the top end of the outer sleeve is provided with a second limiting ring, and the inner diameter of the second limiting ring is smaller than the diameter of the first tray.
Preferably, a second tray is arranged at the bottom end of the inner sleeve, and the diameter of the second tray is larger than the inner diameter of the first limiting ring or larger than the inner diameter of the outer sleeve.
Preferably, the control rod further comprises a buffer mechanism disposed at a bottom end of the second tray.
Preferably, the bottom of first tray with the top of second tray all is equipped with cross connection structure, cross connection structure's intersect is central tie point, the central tie point of first tray and the central tie point of second tray are connected through the inside rigidity post of locating the inner skleeve, the position of rigidity post with the axis coincidence of inner skleeve.
Preferably, the outer sleeve and the inner sleeve both adopt a sandwich structure, and a neutron absorber is filled in the sandwich structure.
Preferably, a gap is left between the inner wall of the outer sleeve and the outer wall of the inner sleeve, and the inner wall of the outer sleeve and the outer wall of the inner sleeve are coated with solid lubricants.
The invention also provides an air-cooled micro-reactor, which comprises a graphite column, a reactor core and a control rod, wherein a control rod channel is arranged in the graphite column, the control rod adopts the control rod, and the control rod is positioned in the control rod channel.
Preferably, the air-cooled micro-reactor further comprises a driving device, and the driving device is connected with the inner sleeve and is used for driving the inner sleeve to move in the outer sleeve along the axial direction of the outer sleeve.
Preferably, the top end of the outer sleeve is provided with a second limiting ring, the inner wall of the control rod channel is provided with a third limiting ring, and the diameter of the third limiting ring is smaller than the outer diameter of the second limiting ring.
Preferably, the air-cooled micro-reactor further comprises a cooling device for reducing the temperature of the control rods, wherein the cooling device comprises a first cooling mechanism, the first cooling mechanism comprises a first cooling channel and a first coolant, the first cooling channel is arranged between the outer wall of the outer sleeve and the control rod channel, and the first coolant is arranged in the first cooling channel.
Preferably, the cooling device further includes a second cooling mechanism including a second cooling passage provided inside the inner sleeve and a second coolant provided in the second cooling passage.
Specifically, the control rod and the air-cooled micro-reactor adopting the control rod have the following beneficial effects:
the control rod comprises an outer sleeve and an inner sleeve which are nested inside and outside, the inner sleeve can move in the outer sleeve along the axial direction, and the inner sleeve can be retracted into the outer sleeve in the transportation process of the control rod, so that the occupied area of the control rod in the transportation process can be reduced, and the transportation convenience and the concealment are improved; and in the using process of the control rod, the inner sleeve can flexibly extend out of the outer sleeve, so that the whole control rod structure is more compact, the height size of the air-cooled micro-reactor is effectively reduced, and the reduction degree can reach half of the height of the reactor active area. Under the condition of not reducing the design power of the gas-cooled micro-reactor, the reactor can be more compact, the volume is smaller, and the transportation flexibility is further improved.
Drawings
FIG. 1 is a schematic view showing the overall construction of a control rod in example 1 of the present invention;
FIG. 2 is a schematic view of the upper structure of a control rod in example 1 of the present invention;
fig. 3 is a schematic structural view of the first tray/second tray in embodiment 1 of the present invention;
FIG. 4 is a schematic structural view of a joint between an inner sleeve and an outer sleeve in example 1 of the present invention;
fig. 5 is a schematic structural view of the bottom of the inner sleeve in embodiment 1 of the present invention.
In the figure: 1-outer sleeve, 11-second limiting ring, 12-first limiting ring, 2-inner sleeve, 21-first tray, 22-second tray, 23-buffer mechanism, 24-cross connecting structure, 25-center connecting point, 3-neutron absorber, 4-control rod channel, 5-rigid column, 6-connecting rope and 7-third limiting ring.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of the present invention.
In the description of the present invention, it should be noted that the indication of orientation or positional relationship, such as "on" or the like, is based on the orientation or positional relationship shown in the drawings, and is only for convenience and simplicity of description, and does not indicate or imply that the device or element referred to must be provided with a specific orientation, constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "disposed," "mounted," "fixed," and the like are to be construed broadly, e.g., as being fixedly or removably connected, or integrally connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
The invention provides a control rod, which comprises an inner sleeve and an outer sleeve, wherein the inner sleeve is nested in the outer sleeve, and the inner sleeve can move along the axial direction of the outer sleeve so as to extend out of the outer sleeve or retract into the outer sleeve.
The invention also provides an air-cooled micro-reactor, which comprises a graphite column, a reactor core and a control rod, wherein a control rod channel is arranged in the graphite column, the control rod adopts the control rod, and the control rod is positioned in the control rod channel.
Example 1
The embodiment discloses a control rod which comprises an inner sleeve 2 and an outer sleeve 1. Wherein, the inner sleeve 2 is nested in the outer sleeve 1, and the inner sleeve 2 can move along the axial direction of the outer sleeve 1 so as to extend out of the outer sleeve 1 or retract into the outer sleeve 1.
In the present embodiment, the inner sleeve 2 and the outer sleeve 1 are both annular hollow structures, and the axes of the two structures are coincident. In this way, the inner liner 2 can linearly move downward in the axial direction inside the outer liner to extend outside the outer liner 1 and contact the core, or linearly move upward in the axial direction and be accommodated inside the outer liner 1.
The inner diameter of the outer sleeve 1 is larger than the outer diameter of the inner sleeve 2, and the length of the inner sleeve 2 is slightly larger than that of the outer sleeve 1, so that the length of the control rod is effectively reduced by the nested structure, the integral height of the micro-reactor is reduced, and the reduction degree can reach half of the height of the active area of the reactor; under the condition of not reducing the design power of the micro-reactor, the reactor can be more compact and smaller in volume and the transportation flexibility is further improved only by changing the structure of the control rod.
As shown in fig. 1, 2 and 3, the top end of the inner sleeve 2 is provided with a first tray 21 which is fixedly installed at the top end of the inner sleeve 2, and the diameter of the first tray 21 is larger than the outer diameter of the inner sleeve 2 and is slightly smaller than the inner diameter of the outer sleeve 1, so that the inner sleeve 2 and the first tray 21 do not rub against the outer sleeve 1 when moving axially along the inner wall of the outer sleeve 1, and the movement stability is achieved. Correspondingly, as shown in fig. 2, a first limit ring 12 is disposed at the bottom end of the outer sleeve 1, the first limit ring 12 is fixedly connected to the bottom end of the outer sleeve 1, the outer diameter of the first limit ring is the same as the outer diameter of the outer sleeve 1, the inner diameter of the first limit ring is smaller than the diameter of the first tray 21, the inner sleeve 2 linearly moves downward along the axial direction until the first tray 21 contacts with the top end of the first limit ring 12, and the movement is stopped due to the blocking effect of the first limit ring 12, so that the inner sleeve 2 reaches the lower boundary of the movement, and the inner sleeve 2 is prevented from separating from the outer sleeve 1.
In this embodiment, the first tray 21 has a ring structure with a through hole in the middle.
As shown in fig. 1, a second limiting ring 11 is arranged at the top end of the outer sleeve 1, the second limiting ring 11 is of a circular ring structure, the inner diameter of the second limiting ring 11 is smaller than the diameter of the first tray 21, and the outer diameter is larger than the outer diameter of the outer sleeve 1; when the control rod is lifted, the inner sleeve 2 moves upwards along the axial direction under the action of external driving force until the first tray 21 contacts the bottom end of the second limiting ring 11, and the inner sleeve 2 cannot be separated from the outer sleeve 1 due to the blocking action of the second limiting ring 11. In this way, the relative movement between the inner sleeve 2 and the outer sleeve 1 is stopped, and the outer sleeve 1 moves upward along with the inner sleeve 2 under the condition that the external driving force continues to act.
As shown in fig. 1, a second tray 22 is arranged at the bottom end of the inner sleeve 2, the second tray 22 is of a circular ring structure, the outer diameter of the upper end of the second tray 22 is larger than the outer diameter of the lower end thereof, and the outer diameter of the upper end of the second tray 22 is larger than the inner diameter of the first limit ring 12 or larger than the inner diameter of the outer sleeve 1; in the rod lifting process, the outer sleeve 1 is kept still, the inner sleeve 2 moves upwards along the axial direction under the action of external driving force and gradually enters the outer sleeve 1 until the top end of the first tray 21/the top end of the second tray 22 of the inner sleeve 2 is contacted with the bottom end of the second limiting ring 11/the bottom end of the first limiting ring 12 of the outer sleeve 1; continuing to lift the rod, the outer sleeve 1 moves upwards along with the inner sleeve 2, and the rod lifting limit is reached when the inner sleeve 2 and the outer sleeve 1 are all positioned above the upper edge of the reactor active area.
Optionally, the control rod may further include a buffer mechanism 23, and the buffer mechanism 23 is fixedly connected to the bottom end of the second pallet 22. Specifically, the buffer mechanism 23 is a spring buffer mechanism for relieving the impact on the bottom of the core when the inner sleeve 2 falls.
As shown in fig. 3 and 5, in the inner sleeve, cross-shaped connecting structures 24 are respectively arranged at the bottom end of the first tray 21 and the top end of the second tray 22, the cross-shaped connecting structures 24 are symmetrically distributed on the first tray 21 and the second tray 22, the intersection point of the cross-shaped connecting structures 24 is a central connecting point 25, wherein the central connecting point 25 of the first tray 21 and the central connecting point 25 of the second tray 22 are connected through a rigid column 5 arranged inside the inner sleeve 2, wherein the position of the rigid column 5 coincides with the axis of the inner sleeve 2, the increase of the cross-shaped connecting structures 24 is beneficial to increase of the connecting strength of the first tray and the second tray, and the rigid column 5 is used for enhancing the rigidity of the control rods and bearing the gravity load of the control rods.
As shown in fig. 4, both the outer sleeve 1 and the inner sleeve 2 adopt a sandwich structure, the interior of the sandwich structure is filled with a neutron absorber 3, and the neutron absorber 3 is distributed in the sandwich structure between the inner sleeve 2 and the outer sleeve 1. The neutron absorber 3 can adopt an annular structure, the material of the neutron absorber is boron carbide, and due to the hollow structures of the inner sleeve 2 and the outer sleeve 1, the boron carbide only needs to be filled in the interlayer structures of the outer sleeve and the inner sleeve, so that the reduction of the loading capacity of the boron carbide is facilitated, the use efficiency of the neutron absorber is improved, the cost of a control rod is reduced, meanwhile, the hollow structure of the inner sleeve can reduce the self-shielding benefit of the boron carbide (the neutron absorber 3), and the effective utilization rate of the boron carbide is improved.
In this embodiment, a gap is left between the inner wall of the outer sleeve 1 and the outer wall of the inner sleeve 2, and the inner wall of the outer sleeve 1 and the outer wall of the inner sleeve 2 are both coated with a solid lubricant, so that the solid lubricant can effectively reduce the friction between the inner sleeve 2 and the inner wall of the outer sleeve 1 during the axial movement, reduce the burden of an external driving system, and ensure the stability of the axial movement of the inner sleeve 2.
Example 2
The embodiment discloses an air-cooled micro-reactor, which comprises a graphite column, a reactor core and a control rod, wherein a control rod channel 4 is arranged in the graphite column, the control rod adopts the control rod of the embodiment 1, and the control rod is positioned in the control rod channel 4.
In this embodiment, the control rod passage 4 is opened at the center of the graphite column, the diameter of the control rod passage 4 is larger than the outer diameter of the second limit ring 11, the inner thimble 2 and the outer thimble 1 of the control rod can make linear motion along the control rod passage 4, when the inner thimble 2 makes linear downward motion along the axial direction of the outer thimble 1, and the first tray 21 of the inner thimble moves to the position of the first limit ring 12 at the bottom end of the outer thimble, the inner thimble 2 can be inserted into the core, when the control rod falls, the temperature of the lower end of the control rod is far higher than the upper end due to the higher temperature of the lower part of the core, when the inner thimble 2 completely extends out of the outer thimble 1, that is, the temperature of the inner thimble 2 is far higher than the temperature of the outer thimble 1, and the distance between the inner thimble 2 at the lower end of the control rod and the inner wall of the control rod passage 4 in the graphite is farther than the distance between the outer thimble 1 and the inner wall of the control rod passage, so that the radiation heat transfer can be remarkably reduced, and the temperature of the outer surface of the control rod can be further reduced.
Optionally, the gas-cooled micro-reactor further comprises a driving device, and the driving device comprises a driving mechanism and a connecting rope 6. The driving mechanism is connected with the one end of being connected the rope, and the other end of being connected rope 6 is connected with inner skleeve 2, specifically is connected with the central tie point of cross connection structure 24 on the first tray 21 of inner skleeve, and at the control rod lifting in-process, driving mechanism drives inner skleeve 2 along the axial upward movement of outer skleeve 1 inside outer skleeve 1 through connecting rope 6.
Optionally, a second limiting ring 11 is arranged at the top end of the outer sleeve 1, a third limiting ring 7 is arranged on the inner wall of the control rod passage 4, and the diameter of the third limiting ring 7 is smaller than the outer diameter of the second limiting ring 11 and larger than the outer diameter of the outer sleeve 1. In the process of dropping the control rod, the outer sleeve 1 and the inner sleeve 2 synchronously move linearly downwards along the axial direction, when the bottom end of the second limiting ring 12 is contacted with the top end of the third limiting ring 7, the top end of the outer sleeve 1 is positioned at the upper edge of the reactor active area, the outer sleeve 1 reaches the lower moving boundary thereof, and then the inner sleeve 2 can continue to move linearly downwards along the axial line under the action of the self gravity.
In this embodiment, the air-cooled micro-reactor further includes a cooling device for reducing the temperature of the control rod.
The cooling device comprises a first cooling mechanism comprising a first cooling channel disposed between the outer wall of the outer sleeve 1 and the control rod channel 4 and a first coolant disposed in the first cooling channel.
Specifically, the first coolant is helium, the first cooling channel is a gap between the outer wall of the outer sleeve 1 and the control rod channel 4, and the first coolant circulates in the gap from top to bottom and is used for reducing the external temperature of the control rod.
Optionally, the cooling device further comprises a second cooling mechanism, the second cooling mechanism comprises a second cooling channel and a second coolant, the second cooling channel is arranged inside the outer sleeve 2 and the inner sleeve when the inner sleeve is extended, and the second coolant is arranged in the second cooling channel.
Specifically, the second coolant is helium, the second cooling channel is a hollow structure in the inner sleeve 2 and the outer sleeve 1, namely the second cooling channel is formed by communicating the inside of the inner sleeve 2 and the inside of the outer sleeve 1 when the inner sleeve extends out, and the second coolant circulates in the second cooling channel from top to bottom and is used for reducing the temperature in the control rod.
During the operation of the air-cooled micro-reactor, a control rod has two motion processes of lifting and dropping to control the micro-reactor.
When a rod dropping process, namely a control rod is inserted into a reactor core, the outer sleeve 1 and the inner sleeve 2 linearly move downwards along the axial direction under the drive of the drive mechanism, in the moving process, when the first tray 21 of the inner sleeve 2 is in contact with the second limiting ring 11 of the outer sleeve 1, the inner sleeve 2 and the outer sleeve 1 synchronously fall, the relative position is not changed, when the second limiting ring 11 is in contact with the third limiting ring 7, the outer sleeve 1 stops moving under the action of the third limiting ring 7, and reaches the lower boundary of the movement, and at the moment, the top end of the outer sleeve 1 is positioned at the upper edge of a reactor active area; the inner sleeve 2 continues to fall under the action of its own gravity and is inserted into the core until the inner sleeve 2 completely extends out of the outer sleeve 1 to the lower boundary of the movement when the first pallet 21 of the inner sleeve 2 is in contact with the first limit ring 12 of the outer sleeve 1.
In the rod lifting process, firstly, the outer sleeve 1 is kept still, the inner sleeve 2 moves upwards in an axial linear mode under the traction of the driving mechanism and gradually enters the inner portion of the outer sleeve 1 until the outer sleeve 1 moves upwards along the axial linear mode along with the inner sleeve 2 after the first tray 21 of the inner sleeve 2 is contacted with the second limiting ring 11 or the second tray 22 of the inner sleeve 2 is contacted with the first limiting ring 12, and the rod lifting limit is reached when the inner sleeve 2 and the outer sleeve 1 are located above the upper edge of the reactor core.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (13)
1. A control rod is characterized by comprising an inner sleeve (2) and an outer sleeve (1),
the inner sleeve (2) is nested in the outer sleeve (1), and the inner sleeve (2) can move along the axial direction so as to extend out of the outer sleeve (1) or retract into the outer sleeve (1).
2. The control rod as set forth in claim 1, characterized in that the top end of the inner thimble (2) is provided with a first pallet (21), the diameter of the first pallet (21) being smaller than the inner diameter of the outer thimble (1),
a first limiting ring (12) is arranged at the bottom end of the outer sleeve (1), and the diameter of the first tray (21) is smaller than the inner diameter of the outer sleeve (1) and larger than the inner diameter of the first limiting ring (12).
3. The control rod as set forth in claim 2, characterized in that the top end of the outer sleeve (1) is provided with a second limit ring (11), the inner diameter of the second limit ring (11) being smaller than the diameter of the first pallet (21).
4. The control rod as set forth in claim 3, characterized in that the bottom end of the inner sleeve (2) is provided with a second tray (22), the diameter of the second tray (22) being larger than the inner diameter of the first stop collar (12) or larger than the inner diameter of the outer sleeve (1).
5. The control rod as set forth in claim 4, further comprising a buffer mechanism (23), the buffer mechanism (23) being disposed at a bottom end of the second pallet (22).
6. The control rod as set forth in claim 4, characterized in that the bottom end of the first tray (21) and the top end of the second tray (22) are provided with a cross-shaped connecting structure (24), the intersection point of the cross-shaped connecting structure (24) is a central connecting point (25), the central connecting point (25) of the first tray (21) and the central connecting point (25) of the second tray (22) are connected through a rigid column (5) arranged inside the inner sleeve (2), and the position of the rigid column (5) coincides with the axis of the inner sleeve (2).
7. The control rod as set forth in any of claims 1-6, characterized in that the outer sleeve (1) and the inner sleeve (2) each adopt a sandwich structure, the interior of which is filled with a neutron absorber (3).
8. The control rod as set forth in any one of claims 1-6, characterized in that a gap is left between the inner wall of the outer sleeve (1) and the outer wall of the inner sleeve (2), and the inner wall of the outer sleeve (1) and the outer wall of the inner sleeve (2) are coated with a solid lubricant.
9. An air-cooled micro-reactor comprising a graphite column, a core and a control rod, wherein a control rod channel (4) is arranged in the graphite column, and the control rod is the control rod of any one of claims 1 to 8, and is positioned in the control rod channel (4).
10. The gas-cooled micro-reactor according to claim 9, further comprising a driving device connected to the inner sleeve (2) for driving the inner sleeve (2) to move axially along the outer sleeve (1) inside the outer sleeve (1).
11. The air-cooled micro-stack of claim 10,
the top end of the outer sleeve (1) is provided with a second limit ring (11),
and a third limiting ring (7) is arranged on the inner wall of the control rod channel (4), and the diameter of the third limiting ring (7) is smaller than the outer diameter of the second limiting ring (11).
12. The gas-cooled micro-stack of claim 11, further comprising a cooling device for reducing the temperature of the control rods, the cooling device comprising a first cooling mechanism,
the first cooling mechanism comprises a first cooling channel disposed between an outer wall of the outer thimble (1) and the control rod channel (4), and a first coolant disposed in the first cooling channel.
13. The air-cooled micro-stack of claim 12, wherein the cooling device further comprises a second cooling mechanism,
the second cooling mechanism comprises a second cooling channel and a second coolant, the second cooling channel is arranged in the inner sleeve (2) and the inner sleeve when the inner sleeve extends out, and the second coolant is arranged in the second cooling channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111093529.9A CN113871034B (en) | 2021-09-17 | 2021-09-17 | Control rod and air-cooled micro-reactor |
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| CN202111093529.9A CN113871034B (en) | 2021-09-17 | 2021-09-17 | Control rod and air-cooled micro-reactor |
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|---|---|---|---|---|
| BE736484A (en) * | 1968-07-24 | 1969-12-31 | ||
| CN103456374A (en) * | 2013-09-03 | 2013-12-18 | 清华大学 | Reactivity control method of pebble-bed high-temperature gas cooled reactor and telescopiform control rod |
| JP2015158514A (en) * | 2015-06-08 | 2015-09-03 | 日立Ｇｅニュークリア・エナジー株式会社 | Light water reactor core |
| CN209366744U (en) * | 2018-12-29 | 2019-09-10 | 海盐金亿包装有限公司 | A kind of high intensity four-way is into pitching wooden conveying tray |
| CN213952963U (en) * | 2020-10-16 | 2021-08-13 | 西南石油大学 | Silo conical shell formwork support platform |
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2021
- 2021-09-17 CN CN202111093529.9A patent/CN113871034B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE736484A (en) * | 1968-07-24 | 1969-12-31 | ||
| CN103456374A (en) * | 2013-09-03 | 2013-12-18 | 清华大学 | Reactivity control method of pebble-bed high-temperature gas cooled reactor and telescopiform control rod |
| JP2015158514A (en) * | 2015-06-08 | 2015-09-03 | 日立Ｇｅニュークリア・エナジー株式会社 | Light water reactor core |
| CN209366744U (en) * | 2018-12-29 | 2019-09-10 | 海盐金亿包装有限公司 | A kind of high intensity four-way is into pitching wooden conveying tray |
| CN213952963U (en) * | 2020-10-16 | 2021-08-13 | 西南石油大学 | Silo conical shell formwork support platform |
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| CN113871034B (en) | 2023-09-22 |
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