CN209880174U - Nuclear critical safety container containing neutron poison - Google Patents
Nuclear critical safety container containing neutron poison Download PDFInfo
- Publication number
- CN209880174U CN209880174U CN201920676496.2U CN201920676496U CN209880174U CN 209880174 U CN209880174 U CN 209880174U CN 201920676496 U CN201920676496 U CN 201920676496U CN 209880174 U CN209880174 U CN 209880174U
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- China
- Prior art keywords
- neutron
- cell body
- nuclear
- feed liquid
- lateral wall
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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 critical safety container of nuclear that contains neutron poison, include: a neutron absorbing piece for storing the cell body that contains the feed liquid of neutron, be located the cell body, neutron absorbing piece is arranged in absorbing the neutron in the feed liquid, and the cell body is enclosed by cell body roof, cell body lateral wall, cell body diapire, and the cell body lateral wall includes: the material of cell body lateral wall body includes neutron poison with set up the first protection layer outside cell body lateral wall body, first protection layer is used for avoiding cell body lateral wall body to be corroded by the feed liquid. The utility model provides a contain critical safety container of nuclear of neutron poison not only passes through the neutron absorbing piece in the neutron absorbing material liquid in the inside of cell body, and the neutron poison in the lateral maximum neutron absorbing material liquid on the horizontal of cell body in the lateral wall body reaches better neutron absorption effect moreover, reduces the critical safe risk of nuclear, reduces spent fuel aftertreatment factory building load to can be applicable to in the more harsh service environment.
Description
Technical Field
The utility model belongs to the technical field of the spent fuel aftertreatment, concretely relates to nuclear critical safety container who contains neutron poison.
Background
The plutonium purification system in the spent fuel post-processing Pretz process is mainly used for purifying and concentrating plutonium-containing feed liquid, and the plutonium of the feed liquid is high in concentration and can also generate plutonium polymers, so that the system is a key part for nuclear critical safety control. Criticality is usually controlled by geometric safety devices lined with solid neutron poisons or by concentration-geometric control.
In the post-treatment engineering of China, a nuclear critical safety container containing neutron poison has been adopted, but the structure is relatively simple, the neutron poison material mainly adopts simple blocks, the feed liquid storage volume of the container is small, the container cannot be used for a feed liquid container with high concentration and large volume, and the use requirement of a large-scale commercial post-treatment plant cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the above-mentioned not enough that exists among the prior art, provide the critical safety container of nuclear that contains neutron poison, neutron poison in the lateral wall body of cell body is in the neutron in the horizontal furthest's absorption feed liquid of cell body.
Solve the utility model discloses technical scheme that technical problem adopted provides a nuclear critical safety container who contains neutron poison, include: a cell body for storing feed liquid that contains the neutron, be located the neutron absorbing piece in the cell body, neutron absorbing piece is arranged in absorbing the neutron in the feed liquid that contains the neutron, and the cell body is enclosed by cell body roof, cell body lateral wall, cell body diapire, and the cell body lateral wall includes: the material of cell body lateral wall body includes neutron poison with set up the first protection layer outside cell body lateral wall body, first protection layer is used for avoiding cell body lateral wall body to be corroded by the feed liquid. The neutron poison is the neutron poison applied to a spent fuel post-treatment plant.
Preferably, the neutron absorber includes: neutron absorbing piece body with set up in this external second protective layer of neutron absorbing piece, the second protective layer is used for avoiding neutron absorbing piece body to be corroded by the feed liquid.
Preferably, the neutron absorber is fixedly connected with the tank body.
Preferably, the neutron absorbing piece extends along the longitudinal direction of the tank body, the top of the neutron absorbing piece is fixedly connected with the top wall of the tank body, and the bottom of the neutron absorbing piece is fixedly connected with the bottom wall of the tank body.
Preferably, the number of the neutron absorbing members is at least two, and the neutron absorbing members are uniformly distributed in the tank.
Preferably, the nuclear-critical safety container containing neutron poison further comprises: feed liquid inlet, feed liquid export, feed liquid inlet sets up in cell body roof or cell body diapire, and the feed liquid export sets up in cell body roof or cell body diapire.
Preferably, the shape of the cross section of the neutron absorber along the transverse direction of the tank body is any one or more of circular, elliptic, triangular, rectangular and star-shaped.
Preferably, the cross section of the groove in the transverse direction is circular or polygonal.
Preferably, the material of the neutron absorber body comprises neutron poison;
the first protective layer is made of stainless steel;
the second protective layer is made of stainless steel.
Preferably, the top wall of the tank body is made of stainless steel;
the bottom wall of the tank body is made of stainless steel.
Preferably, the housing is cylindrical or cubic.
The utility model provides a contain critical safety container of nuclear of neutron poison not only passes through the neutron absorbing piece in the neutron absorbing material liquid in the inside of cell body, and the neutron poison in the lateral wall body of cell body is in the neutron in the horizontal maximum absorption feed liquid of cell body, reaches better neutron absorption effect, reduces the critical safe risk of nuclear, reduces spent fuel aftertreatment factory building load to can be applicable to in the more harsh service environment.
Drawings
FIG. 1 is a transverse cross-sectional view of a nuclear containment vessel containing neutron poison according to example 2 of the present invention;
FIG. 2 is a longitudinal cross-sectional view of a nuclear containment vessel containing neutron poison according to example 2 of the present invention;
FIG. 3 is a transverse cross-sectional view of a nuclear containment vessel containing neutron poison according to example 3 of the present invention;
fig. 4 is a longitudinal sectional view of a nuclear critical safety container containing a neutron poison according to example 3 of the present invention.
In the figure: 1-a groove body; 2-a neutron absorber; 3-tank body top wall; 4-side wall of tank body; 5-bottom wall of the tank body; 6-groove body side wall body; 7-a first protective layer; 8-a neutron absorber body; 9-a second protective layer; 10-feed liquid inlet; 11-a feed liquid outlet; 12-feed liquid; 13-an inner first protective layer; 14-outer first protective layer.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
The present embodiment provides a nuclear-critical containment vessel containing neutron poison, comprising: a cell body for storing feed liquid that contains the neutron, be located the neutron absorbing piece in the cell body, neutron absorbing piece is arranged in absorbing the neutron in the feed liquid that contains the neutron, and the cell body is enclosed by cell body roof, cell body lateral wall, cell body diapire, and the cell body lateral wall includes: the material of cell body lateral wall body includes neutron poison with set up the first protection layer outside cell body lateral wall body, first protection layer is used for avoiding cell body lateral wall body to be corroded by the feed liquid.
The nuclear critical safety container containing the neutron poison in the embodiment absorbs neutrons in the feed liquid through the neutron absorbing piece in the groove body, and the neutron poison in the groove body side wall body absorbs neutrons in the feed liquid in the transverse direction of the groove body to the maximum extent, so that a better neutron absorption effect is achieved, the nuclear critical safety risk is reduced, the load of a spent fuel post-processing workshop is reduced, and the nuclear critical safety container can be applied to a harsher use environment.
Example 2
As shown in fig. 1 and 2, the present embodiment provides a nuclear critical safety container containing neutron poison, including: a cell body 1 for storing feed liquid 12 that contains the neutron, be located neutron absorbing piece 2 of cell body 1, neutron absorbing piece 2 is arranged in absorbing the neutron in feed liquid 12 that contains the neutron, and cell body 1 is enclosed by cell body roof 3, cell body lateral wall 4, cell body diapire 5, and cell body lateral wall 4 includes: cell body lateral wall body 6 and set up first protective layer 7 outside cell body lateral wall body 6, and the material of cell body lateral wall body 6 includes neutron poison, and first protective layer 7 is used for avoiding cell body lateral wall body 6 to be corroded by feed liquid 12.
Specifically, the material of the sidewall body 6 of the tank body in this embodiment is neutron poison. Of course, the material of the tank body side wall body 6 includes neutron poison, and may also include materials of other materials.
Note that, the neutron absorber 2 in the present embodiment includes: neutron absorption spare body 8 with set up the second protective layer 9 outside neutron absorption spare body 8, second protective layer 9 is used for avoiding neutron absorption spare body 8 to be corroded by feed liquid 12.
The neutron absorber 2 in this embodiment is fixedly connected to the tank 1.
It should be noted that the neutron absorbing member 2 in this embodiment extends along the longitudinal direction of the tank body 1, the top of the neutron absorbing member 2 is fixedly connected with the tank body top wall 3, and the bottom of the neutron absorbing member 2 is fixedly connected with the tank body bottom wall 5. Specifically, the longitudinal direction of the tank body 1 in this embodiment is the height direction of the tank body 1, and the transverse direction of the tank body 1 is the direction perpendicular to the height direction of the tank body 1.
Preferably, the number of the neutron absorbing members 2 is at least two, and the neutron absorbing members 2 are uniformly distributed in the tank body 1. Specifically, the number of the neutron absorbing members 2 in the present embodiment is two or more. The neutron absorber 2 can effectively absorb neutrons in the feed liquid.
Preferably, the nuclear-critical containment vessel containing neutron poison further comprises: feed liquid inlet 10, feed liquid export 11, feed liquid inlet 10 sets up in cell body roof 3 or cell body diapire 5, and feed liquid export 11 sets up in cell body roof 3 or cell body diapire 5. Specifically, the feed liquid inlet 10 in this embodiment is disposed on the top wall 3 of the tank body, and the feed liquid outlet 11 is disposed on the bottom wall 5 of the tank body.
Preferably, the shape of the cross section of the neutron absorber 2 along the transverse direction of the tank 1 is any one or more of circular, elliptical, triangular, rectangular, and star-shaped. Specifically, the neutron absorber 2 in the present embodiment has a circular cross-sectional shape along the lateral direction of the tank 1.
Preferably, the cross section of the tank body 1 in the transverse direction is circular or polygonal. Specifically, the cross section of the tank body 1 in the transverse direction in this embodiment is circular.
Preferably, the material of the neutron absorber body 8 includes neutron poison;
the first protective layer 7 is made of stainless steel;
the second passivation layer 9 is made of stainless steel.
Specifically, the material of the neutron absorber body 8 in this embodiment is a neutron poison. Of course, the material of the neutron absorber body 8 includes neutron poison, and may also include materials of other materials.
It should be noted that the top wall 3 of the tank body in this embodiment is made of stainless steel;
the bottom wall 5 of the tank body is made of stainless steel.
Preferably, the tank body 1 is a cylinder or a cube. Specifically, the tank body 1 in this embodiment is a cylinder.
The nuclear critical safety container containing the neutron poison in the embodiment absorbs neutrons in the feed liquid 12 through the neutron absorption piece 2 in the groove body 1, and the neutron poison in the groove body side wall body 6 absorbs neutrons in the feed liquid 12 in the transverse direction of the groove body 1 to the maximum extent, so that a better neutron absorption effect is achieved, the nuclear critical safety risk is reduced, the load of a spent fuel post-processing workshop is reduced, and the nuclear critical safety container can be suitable for a more harsh use environment.
Example 3
As shown in fig. 3 and 4, the present embodiment provides a nuclear critical safety container containing a neutron poison, which is different from the nuclear critical safety container containing a neutron poison in embodiment 2 in that:
the neutron absorber 2 in this embodiment has two shapes, i.e., an elliptical shape and a circular shape, in a cross section along the transverse direction of the tank body 1. The cross section of the trough body side wall body 6 in the transverse direction is regular octagon, so that the absorption of neutrons in the feed liquid 12 in the transverse direction is increased. First protection layer 7 is including setting up in the interior first protection layer 13 of the inner wall of cell body side wall body 6, sets up in the outer first protection layer 14 of the outer wall of cell body side wall body 6, and the cross-section of the horizontal direction of interior first protection layer 13 is circular, and interior first protection layer 13 inscribes in cell body side wall body 6, and the cross-section of the horizontal direction of outer first protection layer 14 is regular octagon, and interior first protection layer 13's inner wall does not have the welding seam, can effectually prevent that feed liquid 12 from revealing. Specifically, the feed liquid inlet 10 in this embodiment is disposed on the top wall 3 of the tank body, and the feed liquid outlet 11 is disposed on the top wall 3 of the tank body.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention 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 (10)
1. A nuclear containment vessel containing a neutron poison, comprising: a neutron absorbing piece for storing the cell body that contains the feed liquid of neutron, be located the cell body, neutron absorbing piece is arranged in absorbing the neutron in the feed liquid, and the cell body is enclosed by cell body roof, cell body lateral wall, cell body diapire, and the cell body lateral wall includes: the material of cell body lateral wall body includes neutron poison with set up the first protection layer outside cell body lateral wall body, first protection layer is used for avoiding cell body lateral wall body to be corroded by the feed liquid.
2. The nuclear-critical containment vessel containing a neutron poison according to claim 1, wherein the neutron absorber comprises: neutron absorbing piece body with set up in this external second protective layer of neutron absorbing piece, the second protective layer is used for avoiding neutron absorbing piece body to be corroded by the feed liquid.
3. The nuclear-critical containment vessel containing neutron poison according to claim 1, wherein the neutron absorber is fixedly attached to the tank.
4. The nuclear critical safety container containing neutron poison according to claim 3, wherein the neutron absorber extends along the longitudinal direction of the tank body, the top of the neutron absorber is fixedly connected with the top wall of the tank body, and the bottom of the neutron absorber is fixedly connected with the bottom wall of the tank body.
5. The nuclear-critical containment vessel containing neutron poison according to claim 1, wherein the number of neutron-absorbing members is at least two, and the neutron-absorbing members are evenly distributed within the tank.
6. The nuclear critical containment vessel containing a neutron poison according to any of claims 1 to 5, further comprising: feed liquid inlet, feed liquid export, feed liquid inlet sets up in cell body roof or cell body diapire, and the feed liquid export sets up in cell body roof or cell body diapire.
7. The nuclear critical safety container containing neutron poison according to any one of claims 1 to 5, wherein the shape of the cross section of the neutron absorber along the transverse direction of the groove body is any one or more of circle, ellipse, triangle, rectangle and star.
8. The nuclear-critical containment vessel containing neutron poison according to any of claims 1 to 5,
the material of the neutron absorber body comprises neutron poison;
the first protective layer is made of stainless steel;
the second protective layer is made of stainless steel.
9. The nuclear-critical containment vessel containing neutron poison according to any of claims 1 to 5,
the top wall of the tank body is made of stainless steel;
the bottom wall of the tank body is made of stainless steel.
10. The nuclear critical safety container containing neutron poison according to any one of claims 1 to 5, wherein the cross section of the groove body in the transverse direction is circular or polygonal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920676496.2U CN209880174U (en) | 2019-05-13 | 2019-05-13 | Nuclear critical safety container containing neutron poison |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920676496.2U CN209880174U (en) | 2019-05-13 | 2019-05-13 | Nuclear critical safety container containing neutron poison |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209880174U true CN209880174U (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920676496.2U Active CN209880174U (en) | 2019-05-13 | 2019-05-13 | Nuclear critical safety container containing neutron poison |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209880174U (en) |
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2019
- 2019-05-13 CN CN201920676496.2U patent/CN209880174U/en active Active
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