CN109994227A - A kind of tungsten material heat shield plate - Google Patents
A kind of tungsten material heat shield plate Download PDFInfo
- Publication number
- CN109994227A CN109994227A CN201711468527.7A CN201711468527A CN109994227A CN 109994227 A CN109994227 A CN 109994227A CN 201711468527 A CN201711468527 A CN 201711468527A CN 109994227 A CN109994227 A CN 109994227A
- Authority
- CN
- China
- Prior art keywords
- tungsten
- heat shield
- shield plate
- pressure vessel
- tungsten material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000463 material Substances 0.000 title claims abstract description 69
- 239000010937 tungsten Substances 0.000 title claims abstract description 54
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 54
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000010935 stainless steel Substances 0.000 claims abstract description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 14
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 238000012856 packing Methods 0.000 claims abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001080 W alloy Inorganic materials 0.000 claims abstract description 7
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 4
- 239000010962 carbon steel Substances 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- 229910000952 Be alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C11/00—Shielding structurally associated with the reactor
- G21C11/08—Thermal shields; Thermal linings, i.e. for dissipating heat from gamma radiation which would otherwise heat an outer biological shield ; Thermal insulation
- G21C11/083—Thermal shields; Thermal linings, i.e. for dissipating heat from gamma radiation which would otherwise heat an outer biological shield ; Thermal insulation consisting of one or more metallic layers
- G21C11/085—Thermal shields; Thermal linings, i.e. for dissipating heat from gamma radiation which would otherwise heat an outer biological shield ; Thermal insulation consisting of one or more metallic layers consisting exclusively of several metallic layers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to nuclear reactor designs technical fields, and in particular to a kind of tungsten material heat shield plate.The tungsten material heat shield plate can be nested in inside the hollow involucrum of stainless steel by tungsten plate and be formed, ferro element can be added in tungsten base or nickel element forms tungsten alloy material and formed, the materials packing materials such as lead, boracic carbon steel can be nested in inside the hollow involucrum of tungsten material and be formed, can also formed using tungsten material merely.The present invention has excellent neutron shield effect, can significantly reduce the fast neutron fluence peak value of pressure vessel, reduce the radiation embrittlement of pressure vessel, increase the service life of pressure vessel.
Description
Technical field
The invention belongs to nuclear reactor designs technical fields, and in particular to a kind of tungsten material heat shield plate.
Background technique
Reactor pressure vessel is the key equipment for determining nuclear power station service life, during normal reactor operation, heap
The neutron that core fission generates can persistently bombard pressure vessel material, increase it without brittle transition temperature, influence pressure
The use of container.Since the spacing between component each in reactor and pressure vessel is had nothing in common with each other, the fission power of each component
It is not quite similar, therefore the distribution of neutron fluence suffered by pressure vessel and uneven.The overall performance of pressure vessel depends on it most
Generally there is the position meeting of peak value for pressure vessel neutron fluence in hanging basket outer surface in reactor design in weak position
Heat shield plate is set, to reduce neutron fluence suffered by pressure vessel, while flattening the distribution of neutron fluence suffered by pressure vessel.
The design of traditional reactor heat shield plate generally uses stainless steel material, shield effectiveness one of the material for neutron
As, the peak value of neutron fluence suffered by pressure vessel can only be reduced to a certain extent, effect is not obvious enough, can not eliminate it is in place
The neutron fluence peak set.Design uses the better heat shield plate of shield effectiveness thus, and providing preferably irradiation for pressure vessel makes
With environment very it is necessary to.
Summary of the invention
The technical problem to be solved in the invention are as follows: stainless steel hot barricade neutron shield effect in the prior art is difficult to
Meet technical requirements, neutron fluence peak value suffered by pressure vessel can not be significantly reduced.
It is described that technical scheme is as follows:
A kind of tungsten material heat shield plate, including the hollow involucrum of stainless steel and tungsten plate, tungsten plate are nested in the hollow involucrum of stainless steel
It is internal.
A kind of tungsten material heat shield plate, material be tungsten material or tungsten alloy material, the tungsten alloy material be
Alloy material of the tungsten base added with ferro element or nickel element.
A kind of tungsten material heat shield plate, including the hollow involucrum of tungsten material and packing material, packing material are nested in tungsten material
Inside hollow involucrum.As a preferred solution: the packing material is lead material or boracic carbon steel material.
The invention has the benefit that
(1) a kind of tungsten material heat shield plate of the invention, can significantly reduce the peak value of neutron fluence suffered by pressure vessel,
Improve pressure vessel radiation environment, make it possible increase pressure vessel service life；
(2) a kind of tungsten material heat shield plate of the invention, using tungsten material, tungsten material atom ordinal number density is all higher, removes
Outside with preferable gamma ray shielding ability, also there is good shield effectiveness to fast neutron, uses tungsten material as heat shielding
The material of plate can be significantly reduced the neutron fluence peak value of pressure vessel；
(3) a kind of tungsten material heat shield plate of the invention, tungsten material have the characteristics such as nontoxic, high temperature resistant, corrosion-resistant can
Meet working environment harsh in reactor, for tungsten material after by neutron activation, the radioactivity of activation products is smaller, in subsequent
The maintenance and replacement of sub- barricade are provided convenience；
(4) a kind of tungsten material heat shield plate of the invention, can make the neutron fluence peak value of pressure vessel inner surface significant
Decline: by taking typical 157 reactor core nuclear power stations as an example, pressure vessel fast neutron fluence peak value is generally present near 0 ° of position, if single
Former stainless steel hot barricade solely is replaced using the heat shield plate of tungsten material, then the peak value of pressure vessel fast neutron fluence E > 1.0MeV
About 30%, E > 0.1MeV peak value, which can be declined, can decline about 40%, design compared to the former heat shield plate using stainless steel,
The distribution of pressure vessel fast neutron fluence can also be significantly improved.If replacing stainless steel using tungsten-bast alloy or stainless
Increase the interlayer of tungsten sill in Steel material, shield effectiveness, which can be weaker than, is used alone tungsten material, but still enables to pressure
The fast neutron fluence of container is decreased significantly, while making heat shield plate itself mechanical performance and significant changes do not occur.Pressure is held
The case where decline of device fast neutron fluence peak value can improve pressure vessel material radiation embrittlement, thus lengthening the life for pressure vessel
Equal offers support.When because of irradiation behaviour obvious deteriorate occurs for reactor pressure vessel material, it can also be used as one kind and remedy hand
Section has potential engineering value and economic value.
Detailed description of the invention
Fig. 1 is the tungsten material heat shield plate in embodiment 1.
In figure, the hollow involucrum of 1- stainless steel, 2- tungsten plate.
Specific embodiment
A kind of tungsten material heat shield plate of the invention is described in detail with reference to the accompanying drawings and examples.
Tungsten material heat shield plate in the present embodiment is manufactured in advance by modes such as castings, heat shield plate as needed
The specific design requirement of cradle cylinder body be fabricated to respective shapes.According to the neutron fluence distribution situation of pressure vessel, determination is hung
Basket cylinder needs the region using heat shield plate, and heat shield plate is installed on cradle cylinder body surface by fixed forms such as bolts.
Embodiment 1
As shown in Figure 1, the tungsten material heat shield plate in the present embodiment, including the hollow involucrum of stainless steel and tungsten plate, tungsten plate are embedding
It is placed on inside the hollow involucrum of stainless steel, forms novel heat shield structure, improving heat shield plate to the same of fast neutron screening ability
When, do not change the performance of heat shield plate itself.
Embodiment 2
Tungsten material heat shield plate in the present embodiment, material are tungsten material or tungsten alloy material.
The tungsten alloy material is the tungsten alloy material added with elements such as iron, nickel, and reducing, pressure vessel is fast
It provides while neutron fluence peak value compared with the better mechanical performance of tungsten material itself.
Embodiment 3
Tungsten material heat shield plate in the present embodiment, including the hollow involucrum of tungsten material and packing material, packing material are nested
Inside the hollow involucrum of tungsten material, hierarchical design can realize the shielding to fast neutron to the maximum extent, reach shielding design
Optimum target.
The packing material is the materials such as lead, boracic carbon steel.
Embodiment 4
Tungsten material heat shield plate in the present embodiment can be manufactured in advance by modes such as castings, according to design requirement system
It is made designated shape；Manufactured heat shield plate can be used for replacement original and transported in addition to can apply to the out-of-pile newly run
The stainless steel hot barricade of row reactor needs to unload former heat shield plate by specific purpose tool first, and using bolted
New heat shield plate is mounted on hanging basket by mode.
Claims (4)
1. a kind of tungsten material heat shield plate, including the hollow involucrum of stainless steel and tungsten plate, it is characterised in that: tungsten plate is nested in stainless steel
Inside hollow involucrum.
2. a kind of tungsten material heat shield plate, material is tungsten material or tungsten alloy material, it is characterised in that: straight using tungsten material
Production heat shield plate is connect, or makes heat shield plate using containing the tungsten-bast alloy of ferro element or nickel element.
3. a kind of tungsten material heat shield plate, including the hollow involucrum of tungsten material and packing material, it is characterised in that: packing material is nested
Inside the hollow involucrum of tungsten material.
4. tungsten material heat shield plate according to claim 3, it is characterised in that: the packing material is lead material or boracic
Carbon steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468527.7A CN109994227A (en) | 2017-12-29 | 2017-12-29 | A kind of tungsten material heat shield plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468527.7A CN109994227A (en) | 2017-12-29 | 2017-12-29 | A kind of tungsten material heat shield plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109994227A true CN109994227A (en) | 2019-07-09 |
Family
ID=67108541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711468527.7A Pending CN109994227A (en) | 2017-12-29 | 2017-12-29 | A kind of tungsten material heat shield plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109994227A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962862A (en) * | 2022-05-13 | 2022-08-30 | 安徽工业大学 | Single-layer heat insulation shielding device for high-temperature pipeline of nuclear power station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743423A (en) * | 1984-09-28 | 1988-05-10 | Westinghouse Electric Corp. | Neutron shield panel arrangement for a nuclear reactor pressure vessel |
| EP0483555A1 (en) * | 1990-10-24 | 1992-05-06 | ANSALDO S.p.A. | An intrinsic arrangement for power stabilization in a thermal nuclear reactor |
| US20070194256A1 (en) * | 2005-05-10 | 2007-08-23 | Space Micro, Inc. | Multifunctional radiation shield for space and aerospace applications |
| CN101504872A (en) * | 2008-02-08 | 2009-08-12 | 西屋电气有限责任公司 | Advanced gray rod control assembly |
-
2017
- 2017-12-29 CN CN201711468527.7A patent/CN109994227A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743423A (en) * | 1984-09-28 | 1988-05-10 | Westinghouse Electric Corp. | Neutron shield panel arrangement for a nuclear reactor pressure vessel |
| EP0483555A1 (en) * | 1990-10-24 | 1992-05-06 | ANSALDO S.p.A. | An intrinsic arrangement for power stabilization in a thermal nuclear reactor |
| US20070194256A1 (en) * | 2005-05-10 | 2007-08-23 | Space Micro, Inc. | Multifunctional radiation shield for space and aerospace applications |
| CN101504872A (en) * | 2008-02-08 | 2009-08-12 | 西屋电气有限责任公司 | Advanced gray rod control assembly |
Non-Patent Citations (2)
| Title |
|---|
| 《电离辐射防护基础与实践》: "《电离辐射防护基础与实践》", 31 December 2011, pages: 164 * |
| R.F.博格斯等: "《中子发生器运行中的辐射安全问题》", 28 February 1981, pages: 18 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962862A (en) * | 2022-05-13 | 2022-08-30 | 安徽工业大学 | Single-layer heat insulation shielding device for high-temperature pipeline of nuclear power station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190709 |
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| RJ01 | Rejection of invention patent application after publication |