CN218351129U - Fuel unit, fuel element and reactor core - Google Patents
Fuel unit, fuel element and reactor core Download PDFInfo
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- CN218351129U CN218351129U CN202221627104.1U CN202221627104U CN218351129U CN 218351129 U CN218351129 U CN 218351129U CN 202221627104 U CN202221627104 U CN 202221627104U CN 218351129 U CN218351129 U CN 218351129U
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- openings
- fuel
- central axis
- main body
- fuel unit
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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
Abstract
The utility model discloses a fuel unit, include: the main part, the first face, second face and a plurality of connected pore, the main part is the regular prism, first face and second face set up along the thickness direction of main part relatively, be equipped with a plurality of first openings on the first face, the at least part of a plurality of first openings sets up around the central axis of main part, be equipped with a plurality of second openings on the second face, the at least part of a plurality of second openings sets up around the central axis of main part, a plurality of second openings and a plurality of first opening one-to-one, the thickness direction of main part is unanimous with the extending direction of the central axis of main part, a plurality of connected pore and a plurality of first openings and a plurality of second opening one-to-one, connected pore intercommunication first opening and second opening, and first opening is spaced apart in the circumference of the central axis of main part with the second opening. The fuel unit of the utility model is convenient to manufacture, and the fuel element formed after the fuel unit is stacked has the advantage of high heat exchange coefficient.
Description
Technical Field
The present invention relates to the field of nuclear propulsion, and in particular, to a fuel unit, fuel element and reactor core.
Background
The nuclear thermal propulsion reactor uses hydrogen as coolant, and the fuel design usually uses a solid-state stack in the form of a straight-hole graphite hexagonal prism and a metal stack in the form of a spiral pipe. Compared with a metal pile in a spiral pipe form, the solid pile in the straight hole graphite hexagonal prism form with the same length and size in the related technology has the advantage that the length of a straight hole channel is obviously smaller than that of a spiral pipe, so that the solid pile in the straight hole graphite hexagonal prism form has the problem of small heat exchange coefficient, and the metal pile in the spiral pipe form has large manufacturing difficulty.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving one of the technical problems in the related art at least to a certain extent.
Therefore, the embodiment of the present invention provides a fuel unit, which is convenient to manufacture, and the fuel element formed after the fuel unit is stacked has the advantage of high heat exchange coefficient.
An embodiment of the utility model provides a fuel element, this fuel element have convenient manufacturing, advantage that coefficient of heat transfer is high.
An embodiment of the utility model provides a reactor core, this reactor core's fuel element has the convenient advantage of making, coefficient of heat transfer is high.
The utility model discloses fuel unit includes: a body that is a regular prism; the first surface and the second surface are oppositely arranged along the thickness direction of the main body, a plurality of first openings are arranged on the first surface, at least parts of the first openings are arranged around the central axis of the main body, a plurality of second openings are arranged on the second surface, at least parts of the second openings are arranged around the central axis of the main body, the second openings correspond to the first openings one by one, and the thickness direction of the main body is consistent with the extending direction of the central axis of the main body; the connecting hole passages are in one-to-one correspondence with the first openings and the second openings, the connecting hole passages are communicated with the first openings and the second openings, and the first openings and the second openings are spaced in the circumferential direction of the central axis of the main body.
The utility model discloses set up the intercommunication pore on the fuel unit and can conveniently make to pile up a plurality of fuel units and form fuel element, the intercommunication pore forms the spiral pore, has increased the distance that gas flows, can improve the heat transfer effect.
In addition, the length of the spiral duct can be increased or decreased by changing the radial dimension of the communicating duct of the fuel unit or changing the thickness of the fuel unit itself to change the spiral duct formed by the connecting duct.
Therefore, the fuel unit provided by the embodiment of the utility model is convenient to manufacture, and the fuel element formed after the fuel unit is stacked has the advantage of high heat exchange coefficient.
In some embodiments, further comprising a central bore extending through the first and second faces in a thickness direction of the body, an axis of the central bore coinciding with a central axis of the body.
In some embodiments, the plurality of first openings comprises a plurality of first groups, the first groups being disposed around the central bore and the plurality of first groups being spaced apart in a radial direction of the central bore; the plurality of second openings includes a plurality of second groups, the second groups are disposed around the central hole, and the plurality of second groups are spaced apart in a radial direction of the central hole.
In some embodiments, the central axis of the connecting bore is an arc.
In some embodiments, the central axis of the connecting bore is a straight line.
In some embodiments, a dimension of the body in the thickness direction is 10 mm or more and 100 mm or less.
In some embodiments, the radial dimension of the connecting duct is greater than or equal to 1 mm and less than or equal to 10 mm, and the number of the first openings is greater than or equal to 10 and less than or equal to 50.
A fuel element according to an embodiment of the present invention comprises a fuel unit according to any one of the above embodiments.
In some embodiments, the fuel unit is provided in plurality, the fuel units are stacked in sequence along the thickness direction of the main body to form the fuel element, and the first opening of one of two adjacent fuel units is communicated with the second opening of the other fuel unit.
The reactor core of the present embodiments includes a fuel element as described in the above embodiments.
Drawings
Fig. 1 is a schematic structural diagram of a fuel unit according to an embodiment of the present invention.
Fig. 2 isbase:Sub>A schematic sectional view taken along the planebase:Sub>A-base:Sub>A in fig. 1.
Fig. 3 is a schematic structural diagram of a fuel element according to an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view taken along the plane B-B in fig. 3.
Reference numerals:
a fuel unit 1; a main body 11; a first face 111; a first opening 1111; a second face 112; a second opening 1121; a connecting tunnel 113; a central aperture 114;
a fuel element 2.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
A fuel unit 1 according to an embodiment of the present invention is described below with reference to the drawings.
As shown in fig. 1 and 2, a fuel unit 1 according to an embodiment of the present invention includes: a body 11, a first face 111, a second face 112, and a plurality of connecting tunnels 113.
The first surface 111 and the second surface 112 are disposed opposite to each other in a thickness direction (e.g., a vertical direction in fig. 2) of the main body 11, the first surface 111 is provided with a plurality of first openings 1111, at least a portion of the plurality of first openings 1111 is disposed around a central axis of the main body 11, the second surface 112 is provided with a plurality of second openings 1121, at least a portion of the plurality of second openings 1121 is disposed around the central axis of the main body 11, the plurality of second openings 1121 correspond to the plurality of first openings 1111 in a one-to-one manner, and the thickness direction of the main body 11 is consistent with an extending direction of the central axis of the main body 11. The plurality of connection ducts 113 correspond to the plurality of first openings 1111 and the plurality of second openings 1121 one by one, the connection ducts 113 communicate the first openings 1111 and the second openings 1121, and the first openings 1111 and the second openings 1121 are spaced apart in the circumferential direction of the central axis of the main body 11.
Specifically, as shown in the figure, the first surface 111 and the second surface 112 are disposed opposite to each other in the vertical direction, that is, the upper surface of the main body 11 is the first surface 111, and the lower surface of the main body 11 is the second surface 112. The number of the plurality of first openings 1111, the plurality of second openings 1121 and the plurality of connecting tunnels 113 are all the same.
It is understood that a portion of the plurality of first openings 1111 is disposed around the central axis of the main body 11, that is, the portion of the first openings 1111 may be uniformly distributed on a circle having a projection of the central axis of the main body 11 on the first face 111 as a center and a radius of a distance from the center of the first openings 1111 to the central axis of the main body 11, and similarly, other portions of the plurality of first openings 1111 are also uniformly distributed on the first face 111.
A connecting hole 113 connects a first opening 1111 and a second opening 1121, and the first opening 1111 and the second opening 1121 have a gap in the circumferential direction of the central axis of the main body 11, that is, a gap is formed between the projection of the first opening 1111 on the second face 112 and the projection of the second opening 1121 on the second face 112, so that an angle greater than 0 degree is formed between the central axis of the connecting hole 113 and the up-down direction.
That is to say, it is a plurality of the utility model discloses fuel unit 1 piles up and to form fuel element, because the central axis of interface channel has the contained angle between the direction from top to bottom, consequently, the intercommunication pore on a plurality of fuel unit 1 links to each other and forms the spiral pore, has increased the distance that gas flows, and then has improved the heat transfer effect. And the fuel unit 1 has a simple structure and is convenient to manufacture.
Further, the radial dimension of the communicating ports of the fuel unit 1 is changed or the thickness of the fuel unit 1 itself is changed to change the path dimension of the spiral port formed by the connecting ports 113, so that the length of the spiral port can be increased or decreased.
Therefore, the fuel unit 1 of the embodiment of the present invention is convenient to manufacture, and the fuel element formed after stacking the fuel unit 1 has the advantage of high heat exchange coefficient.
It should be noted that the main body 11 of the fuel unit 1 may be a regular prism, and preferably, as shown in fig. 1, the main body 11 is a regular hexagonal prism.
In some embodiments, the fuel unit 1 of the present invention further includes a central hole 114, the central hole 114 penetrates the first surface 111 and the second surface 112 in the thickness direction of the main body 11, and an axis of the central hole 114 coincides with a central axis of the main body 11.
Specifically, as shown in the figure, the central hole 114 is a straight hole, that is, the axial extension direction of the central hole 114 coincides with the up-down direction, and the central hole 114 penetrates the first surface 111 and the second surface 112 in the up-down direction.
It will be appreciated that the central bore 114 may be used to mount a support or other component, such as a structural support bar (not shown) or the like.
In some embodiments, the first plurality of openings 1111 includes a first plurality of sets, the first plurality of sets being disposed around the central aperture 114 and the first plurality of sets being spaced apart along a radial direction of the central aperture 114. The plurality of second openings 1121 includes a plurality of second groups, the second groups being disposed around the central hole 114 and the plurality of second groups being spaced apart in a radial direction of the central hole 114.
Specifically, as shown in the figure, the plurality of first openings 1111 are divided into a plurality of portions, each portion includes a plurality of first openings 1111, and the plurality of first openings 1111 form a first group, that is, one first group is composed of the plurality of first openings 1111, and the plurality of first openings 1111 of the one first group are disposed around the central hole 114. The first openings 1111 of the first group may be uniformly spaced around the circumference of the central hole 114, that is, the first openings 1111 of the first group are uniformly distributed on a circle which takes the center of the central hole 114 as a center and the distance from the center of the first opening 1111 of the first group to the center of the central hole 114 as a radius. The other first groups are arranged spaced from the one first group in the radial direction of the central hole 114. Similarly, the plurality of second openings 1121 of one second group corresponding to the one first group are uniformly distributed on a circle having the center of the central hole 114 as a center and the distance from the center of one second opening 1121 of the one second group to the center of the central hole 114 as a radius, and the other second groups are spaced from the one second group along the radial direction of the central hole 114.
Alternatively, as shown in fig. 1, the main body 11 is a regular hexagonal prism, and the centers of the first openings 1111 in one first group are sequentially connected to form a regular hexagon, and the distance between every two adjacent first openings 1111 in one first group is equal. Similarly, the centers of the second openings 1121 in the second group are sequentially connected to form a regular hexagon.
Optionally, the central axis of the connecting aperture 113 is an arc. That is, the connecting duct 113 is an arc duct, and after a plurality of fuel units 1 are stacked to form a fuel element, the connecting ducts 113 on the fuel units 1 are communicated, and a spiral duct can also be formed, so as to increase the size of the path for heat exchange and improve the heat exchange effect.
Preferably, as shown in fig. 2, the central axis of the connecting duct 113 is a straight line. It is understood that the connecting duct 113 is a straight duct whose axis is inclined, that is, the central axis of the connecting duct 113 has an angle greater than 0 degree with the up-down direction, so that the connecting duct 113 is inclined.
That is, when the plurality of fuel units 1 are stacked in the up-down direction, the connecting ducts 113 of two adjacent fuel units 1 are communicated, and the connecting ducts 113 of the plurality of fuel units 1 are connected to form a spiral duct, which is used for heat exchange of gas and has a longer length than a straight duct, thereby improving the heat exchange effect.
In some embodiments, the size of the body 11 in the thickness direction is 10 mm or more and 100 mm or less.
It will be appreciated that, as shown in fig. 1 and 2, when the number and radial dimensions of the first openings 1111, the second openings 1121 and the connecting tunnels 113 are constant, and the thickness of the body 11 is changed, the angle between the extending direction of the central axis of the connecting tunnel 113 and the up-down direction can be changed to change the length of the spiral tunnel. That is, when the number and radial dimensions of the first openings 1111, the second openings 1121 and the connecting portholes 113 are not changed, the smaller the thickness of the body 11, the larger the angle between the extending direction of the central axis of the connecting porthole 113 and the up-down direction.
In some embodiments, the radial dimension of the connecting duct 113 is greater than or equal to 1 mm and less than or equal to 10 mm, and the number of the first openings 1111 is greater than or equal to 10 and less than or equal to 50.
It will be appreciated that varying the number of first openings 1111, or varying the radial dimensions of first openings 1111, second openings 1121 and connecting tunnels 113, or varying the number of first openings 1111 and the radial dimensions of first openings 1111, second openings 1121 and connecting tunnels 113, as shown in fig. 1 and 2, can vary the path size of the spiral tunnels.
It is to be noted that the wall surface of the connecting port 113 and the peripheral wall surface of the fuel unit 1 are provided with a corrosion-resistant coating, for example, a zirconium carbide coating, so as to satisfy a hydrogen corrosion resistance condition.
The fuel element of the embodiment of the present invention is described below with reference to the drawings.
As shown in fig. 3 and 4, a fuel element 2 of an embodiment of the present invention includes a fuel unit 1 according to any one of the above embodiments.
In some embodiments, there are a plurality of fuel units 1, the plurality of fuel units 1 are stacked in sequence along the thickness direction of the main body 11 to form the fuel element 2, and the first opening 1111 of one of two adjacent fuel units 1 is communicated with the second opening 1121 of the other.
It can be understood that, as shown in fig. 3 and 4, the second opening 1121 in one fuel unit 1 of the fuel element 2 of the embodiment of the present invention communicates with the first opening 1111 of the adjacent fuel unit 1 located below the one fuel unit 1, so that the connecting channels on the adjacent two fuel units 1 communicate to form a spiral channel.
A reactor core of an embodiment of the present invention is described below.
The reactor core of the present embodiment includes the fuel element 2 according to the above embodiment.
It can be understood that the fuel unit 1 in the reactor core of the embodiment of the present invention has a simple structure, is convenient to manufacture, and in addition, the fuel element 2 formed by stacking a plurality of the fuel units 1 has a spiral duct, so as to increase the path of the gas passing through the spiral duct, and improve the heat exchange effect of the gas.
Therefore, the fuel element 2 of the reactor core of the embodiment of the present invention has the advantages of convenient manufacture and high heat exchange coefficient.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although the above embodiments have been shown and described, it should be understood that they are exemplary and should not be construed as limiting the present invention, and that many changes, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.
Claims (10)
1. A fuel unit, comprising:
a body that is a regular prism;
a first face and a second face, the first face and the second face being disposed opposite to each other in a thickness direction of the main body, the first face having a plurality of first openings, at least a portion of the plurality of first openings being disposed around a central axis of the main body,
the second surface is provided with a plurality of second openings, at least parts of the second openings are arranged around the central axis of the main body, the second openings correspond to the first openings one by one, and the thickness direction of the main body is consistent with the extension direction of the central axis of the main body;
the connecting hole passages are in one-to-one correspondence with the first openings and the second openings, the connecting hole passages are communicated with the first openings and the second openings, and the first openings and the second openings are spaced in the circumferential direction of the central axis of the main body.
2. The fuel unit of claim 1, further comprising a central bore extending through the first and second faces in a thickness direction of the body, an axis of the central bore coinciding with a central axis of the body.
3. The fuel unit of claim 2, wherein the plurality of first openings comprises a plurality of first groups, the first groups being disposed around the central bore and the plurality of first groups being spaced apart in a radial direction of the central bore;
the plurality of second openings includes a plurality of second groups, the second groups being disposed around the central bore and the plurality of second groups being spaced apart in a radial direction of the central bore.
4. The fuel unit of claim 1, wherein the central axis of the connecting orifice is arcuate.
5. The fuel unit of claim 1, wherein the central axis of the connecting orifice is a straight line.
6. The fuel unit according to claim 4 or 5, characterized in that a dimension of the main body in the thickness direction is 10 mm or more and 100 mm or less.
7. The fuel unit according to claim 6, characterized in that a radial dimension of the connecting hole is 1 mm or more and 10 mm or less, and the number of the first openings is 10 mm or more and 50 or less.
8. A fuel element, characterized by comprising a fuel unit according to any one of claims 1-7.
9. The fuel element according to claim 8, wherein the fuel unit is plural, the plural fuel units are stacked in order in a thickness direction of the main body to form the fuel element, and the first opening of one of two adjacent fuel units communicates with the second opening of the other.
10. A reactor core comprising the fuel element of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221627104.1U CN218351129U (en) | 2022-06-27 | 2022-06-27 | Fuel unit, fuel element and reactor core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221627104.1U CN218351129U (en) | 2022-06-27 | 2022-06-27 | Fuel unit, fuel element and reactor core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218351129U true CN218351129U (en) | 2023-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221627104.1U Active CN218351129U (en) | 2022-06-27 | 2022-06-27 | Fuel unit, fuel element and reactor core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218351129U (en) |
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2022
- 2022-06-27 CN CN202221627104.1U patent/CN218351129U/en active Active
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