CN109296869A - A kind of nuclear leve equipment and pipeline disperse filled composite insulating layer - Google Patents
A kind of nuclear leve equipment and pipeline disperse filled composite insulating layer Download PDFInfo
- Publication number
- CN109296869A CN109296869A CN201811473742.0A CN201811473742A CN109296869A CN 109296869 A CN109296869 A CN 109296869A CN 201811473742 A CN201811473742 A CN 201811473742A CN 109296869 A CN109296869 A CN 109296869A
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- CN
- China
- Prior art keywords
- shielding layer
- outer box
- gamma shielding
- insulating layer
- metallic reflection
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/08—Means for preventing radiation, e.g. with metal foil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F1/00—Shielding characterised by the composition of the materials
- G21F1/12—Laminated shielding materials
- G21F1/125—Laminated shielding materials comprising metals
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Thermal Insulation (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of nuclear leve equipment and pipeline disperse filled composite insulating layers, including heat preservation outer box and the interior outside gamma shielding layer, boron carbide powder and the metallic reflection paillon that are seated in inside heat preservation outer box, interior outside gamma shielding layer is all made of inorganic mask material with metallic character and is made；Filling sequence on insulation layer thickness section is successively are as follows: keeps the temperature inner hull, inside gamma shielding layer, metallic reflection paillon, outside gamma shielding layer and the Shell Plate for keeping the temperature outer box of outer box, the boron carbide powder even dispersion is in the cavity between adjacent two layers metal foil；The positive and negative conical boss corrugated shape that the metallic reflection paillon is arranged in regular intervals in length and breadth, and adjacent two layers metallic reflection paillon is with the formula interfolded backwards of positive and negative conical boss vertex opposite vertexes.The present invention provides a kind of not only composition metal insulating layers with incubation and thermal insulation function but also with screen radiation shield function, can be on active service under hyperthermia radiation environment without replacing the long-lived phase.
Description
Technical field
The present invention relates to nuclear industry technical fields, and in particular to a kind of nuclear leve equipment and pipeline are kept the temperature with disperse filled composite
Layer.
Background technique
When nuclear reactor operates normally, inside core level-one main equipment and pipeline to flow high temperature, high pressure, high radioactivity cold
But medium needs to be thermally shielded in equipment and pipeline external surface setting insulating layer, reduces thermal loss, while being also required in core one
Shielding material is arranged to reduce the dose of radiation of equipment periphery in grade equipment and pipeline external, facilitates the inspection of personnel's in-service period
Maintenance.Currently, the first device and pipeline external of nuclear reactor coolant system usually all use metallic insulation, but this gold
Belong to insulating layer and only have incubation and thermal insulation function, does not have function of shielding, such as: patent US3904379A, CN1159062A,
The metallic insulation that CN203131332U is provided does not have function of shielding.But with the development of nuclear power technology, both bands are protected
Warm heat insulating function, the demand of nuclear leve equipment and pipe insulating layer with function of shielding is more obvious again, patent CN103174912B
A kind of compound insulating layer with function of shielding is respectively provided with CN103971761A, but the shielding material of the two all uses
Boracic silicone resin or the nonmetallic organic material such as Boron-containing-PE plate or boracic epoxy resin board, this kind of nonmetallic organic screen material
The Applicable temperature range of material is generally not above 200 DEG C, even under the working environment lower than 200 DEG C, for organic resin
The inherent characteristic of material itself limits, and this kind of nonmetallic organic shielding material will necessarily generate under high temperature, prolonged use
Ageing of performance causes its function of shielding to be gradually reduced and even loses, and a service life will not be very long, is being used for the super-long service life phase
Nuclear power plant and when nuclear-plant (such as 60 year phase in longevity), be necessarily required to periodic replacement to guarantee that its shielding properties meets always
It is required that.
Summary of the invention
The technical problems to be solved by the present invention are: the composition metal insulating layer with radiation shield function is adopted in the prior art
It is made of organic material, high temperature resistance is poor, and service life is short, needs to regularly replace, the present invention provides solve the above problems
A kind of nuclear leve equipment and pipeline disperse filled composite insulating layer.
The present invention is achieved through the following technical solutions:
A kind of nuclear leve equipment and pipeline disperse filled composite insulating layer, including heat preservation outer box and be seated in heat preservation outer box
Inside gamma shielding layer, outside gamma shielding layer, boron carbide powder and the metallic reflection paillon in portion, the inside gamma shielding layer
Inorganic mask material with metallic character is all made of with outside gamma shielding layer to be made；Filling on insulation layer thickness section
Sequence is successively are as follows: keeps the temperature inner hull, inside gamma shielding layer, several layers metallic reflection paillon, the outside gamma shielding layer of outer box
With the Shell Plate of heat preservation outer box, the boron carbide powder even dispersion is in the cavity between adjacent two layers metal foil；It is several
Layer metallic reflection paillon is whole, and by positive conical boss and reversed conical boss, regular intervals arrange and form corrugated shape in length and breadth,
And adjacent two layers metallic reflection paillon is folded with interlocking backwards to formula for vertex of the vertex of positive conical boss to reversed conical boss
It puts.
The heat preservation outer box of metallic insulation provided by the invention can be inner hull towards heat-producing device outer wall, be also possible to
Shell Plate can be fabricated to plate according to the shape of equipment surface towards heat-producing device outer wall, the monnolithic case of metallic insulation
Shape, tubular, spheric.The filling number of plies of metallic reflection paillon depending on the heat preservation of heat-producing device and radiation shielding needs,
Spacing between adjacent two layers metallic reflection paillon can be adjusted by controlling the height of positive and negative cylinder boss, to reach metal
The optimization of reflective foil the filling number of plies and heat insulating effect.Adjacent two layers metallic reflective foil piece must be positive circle when loading
The vertex of cone boss guarantees between adjacent two layers metallic reflection paillon the formula interfolded backwards on the vertex of reversed conical boss
Contact be point contact entirely, it is therefore an objective to reduce metal contact area, reduce the loss of metal thermal contact conductance.
Further, the heat preservation outer box are the side coverboards by inner hull, Shell Plate and surrounding by being formed by welding one
A closed outer box, the side coverboard of the inner hull, Shell Plate and surrounding are all made of the austenitic stainless steel thin plate in bimirror face
It is made.
Further, Co content mass percent≤1% of the austenitic stainless steel thin plate, in reducing be subjected to as far as possible
Activation dosage level after son and gamma irradiation.
Further, the inside gamma shielding layer and outside gamma shielding layer are all made of stereotype or tungsten alloy plate is made.
Further, the metallic reflection paillon is pressed between regularity in length and breadth using ultra-thin austenitic stainless steel foil
Every the positive conical boss of arrangement and the line shape of reversed conical boss.
Further, the ultra-thin austenitic stainless steel foil is made through solution annealing, double-sided light processing, and Co content
Mass percent≤1%.
Ultra-thin austenitic stainless steel foil for pressed metal reflective foil should be handled with solution annealing, double-sided light,
And the control of Co content is being not more than 1% level, the purpose is to: 1) plasticity and toughness for enhancing stainless steel foil band prevent from being pressed into
It is torn when shape；2) surface smoothness of stainless steel foil band is improved to reduce the slin emissivity of foil, enhances metallic reflective foil
Radiation reflective ability of the piece to heat；3) it reduces as far as possible and is subjected to the activation dosage level after neutron and gamma irradiation.
The present invention has the advantage that and the utility model has the advantages that
1, composition metal insulating layer of the present invention is to increase neutron and gamma in the inside of metallic insulation structure
Shielding material had not only remained the excellent incubation and thermal insulation function of metallic insulation, but also had increased the spoke of shielding neutron and gamma ray newly
Function of shielding is penetrated, and neutron shield layer uses boron carbide powder, the gamma shielding layer in interior outside uses stereotype or tungsten alloy plate,
Above-mentioned three kinds of shielding materials are all inorganic mask materials with metallic character, and high temperature resistant, radiation resistance, chemical and physical properties are steady
It is fixed, can the phenomenon that use is without aging and shielding properties decline under high temperature, high radiation environment the long-lived phase, do not need
Periodic replacement, overcomes nonmetallic organic shielding material used in patent CN103174912B and CN103971761A well
Non-refractory, the easy to aging, deficiency that need to regularly replace；
2, the ripple struction for the single-layer metal reflective foil loaded inside composition metal insulating layer of the present invention and more
The stacked configuration of layer metallic reflection paillon can effectively reduce radiant heat transfer amount and metal thermal contact conductance heat output, improve compound
The heat insulating effect of type metallic insulation.Moreover, the positive and negative conical boss ripple of metallic reflective foil on piece of the present invention
Structure is into being intervally arranged in length and breadth for regularity in entire plane, is evenly distributed in all directions, can not have to distinguish ripple side
To being extremely easily rolled into round tube shape and spherical shape, with facilitate by the monnolithic case of entire composite metal insulating layer according to
Equipment surface shape is fabricated to tubular or spheric.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is composition metal heat insulation layer structure schematic diagram of the present invention；
Fig. 2 is the top plan view structure of the metallic reflection paillon in Fig. 1；
Fig. 3 is the A-A cross-section structure of the metallic reflection paillon in Fig. 2.
Label and corresponding parts title in attached drawing: 1- inner hull, 2- Shell Plate, the side 3- coverboard, the inside 4- gamma
Shielded layer, 5- boron carbide powder, gamma shielding layer on the outside of 6-, 7- metallic reflection paillon, 8- forward direction conical boss, the reversed circular cone of 9-
Boss
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment
As shown in Figure 1, composition metal insulating layer of the present invention is by heat preservation outer box and is seated in inside heat preservation outer box
Inside gamma shielding layer 4, outside gamma shielding layer 6, boron carbide powder 5, metallic reflection paillon 7 are constituted, and each part is cut in thickness
Filling sequence on face is successively are as follows: keeps the temperature the inner hull 1, inside gamma shielding layer 4, multiple layer metal reflective foil 7, carbonization of outer box
Boron powder 5, outside gamma shielding layer 2, the Shell Plate 3 for keeping the temperature outer box, wherein 5 even dispersion of boron carbide powder is in adjacent two layers gold
Belong in the cavity between reflective foil 7.The monnolithic case of this composite metal insulating layer with function of shielding can be according to setting
The shape on standby surface is fabricated to plate shaped, tubular, spheric, and the high temperature range used can generally be kept the temperature to 450 DEG C
Performance can generally accomplish that Equivalent Thermal Conductivities are less than 0.075W/ (m.K), and service life expection can be by 60 years even more
It is long.
It keeps the temperature outer box and the welding manners such as spot welding or discontinuous welding is passed through by the side coverboard 3 of inner hull 1, Shell Plate 2 and surrounding
A closed outer box are constituted, material is manufactured using austenitic stainless steel thin plate, and austenitic stainless steel thin plate need to carry out two-sided throwing
Light processing reaches the requirement of bimirror face, and the Co content in stainless sheet steel should control and be not more than 1% level, to drop as far as possible
The low activation dosage level being subjected to after neutron and gamma irradiation.The thickness of inner hull 1 and Shell Plate 2 generally 0.6mm~
Between 1.0mm, and the thickness of side coverboard 3 can be equal with the thickness of the thickness of inner hull 1 or Shell Plate 2, but in view of protecting
The structural strength of warm outer box can also be slightly thicker than the thickness of inner hull 1 and the thickness of Shell Plate 2, but is usually no more than 2mm,
It, can be in the case where keeping coverboard 3 thickness in side constant, by side coverboard edge in order to further enhance the intensity of heat preservation outer box
Incubation chamber thickness direction inwardly suppresses equally spaced triangular groove or semi-cylindrical recesses, to increase the bending resistance of side coverboard
Section modulus, so as to improve the overall structure stiffness and strength of incubation chamber.
Boron carbide powder 5 uses the pure grade boron carbide powder of core, uniformly more by the cavity formed between metallic reflection paillon 7
It is full to dissipate filling, plays the role of shielding neutron.Boron carbide powder fills out the relative density general control after filling 50% or so.
Inside gamma shielding layer and outside gamma shielding layer are all made of stereotype or tungsten alloy plate, and operating temperature is lower than 327 DEG C
Shi Caiyong stereotype uses tungsten alloy plate when being higher than 327 DEG C, and the thickness of inside gamma shielding layer and outside gamma shielding layer is according to spoke
It penetrates depending on shielding demand.
Metallic reflection paillon 7 is manufactured using ultra-thin austenitic stainless steel foil, thickness generally in 0.05mm~0.1mm,
And it is pressed into the positive conical boss 8 of Fig. 2 and regular intervals in length and breadth shown in Fig. 3 arrangement and the ripple of reversed conical boss 9
Shape, the top diameter of positive and negative conical boss is generally in 5mm~10mm, and bottom diameter is generally in 20mm~60mm range, positive and negative conical boss
Height generally in 5mm~15mm range, preferably in 5~10mm；Spacing between adjacent positive and negative conical boss is generally in 60mm
~120mm range.For the filling number of plies of metallic reflection paillon 7 depending on the heat preservation demand of heat-producing device, adjacent two layers metal is anti-
The spacing penetrated between paillon 7 can be adjusted by controlling the height of positive and negative conical boss, to reach the filling of metallic reflection paillon 7
The optimization of the number of plies and heat insulating effect.Adjacent two layers metallic reflection paillon 7 must be the top of positive conical boss 8 when loading
Point is complete to the contact between formula interfolded, guarantee adjacent two layers metallic reflection paillon 7 on the vertex of reversed conical boss 9
It is point contact, it is therefore an objective to reduce metal contact area, reduce the loss of metal thermal contact conductance.For pressed metal reflective foil 7
Ultra-thin austenitic stainless steel foil need to be handled through solution annealing and double-sided light, and the control of Co content is being not more than 1% water
It is flat, the purpose is to: 1) plasticity and toughness for enhancing stainless steel foil band prevent from being torn in compression moulding；2) stainless steel foil band is improved
Surface smoothness is to reduce the slin emissivity of foil, radiation reflective ability of the enhancing metallic reflection paillon 7 to heat；3) as far as possible
Reduction is subjected to the activation dosage level after neutron and gamma irradiation.
In addition, metallic reflection paillon can also be pressed into the positive and negative triangle corrugated shape or chocolate of existing mechanical periodicity
Metallic reflection paillon and this hair referring to above content, after compression moulding is arranged in corrugated shape, depth and corresponding spacing parameter
The structures such as bright heat preservation outer box and neutron shield layer, gamma shielding layer, demarcation plate are with the use of also can reach preferable heat preservation effect
Fruit.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of nuclear leve equipment and pipeline disperse filled composite insulating layer, which is characterized in that including heat preservation outer box and be seated in
Keep the temperature inside gamma shielding layer (4), outside gamma shielding layer (6), boron carbide powder (5) and the metallic reflection paillon inside outer box
(7), the inside gamma shielding layer (4) and outside gamma shielding layer (6) are all made of inorganic mask material with metallic character
It is made；Filling sequence on insulation layer thickness section is successively are as follows: keeps the temperature inner hull (1), the inside gamma shielding layer of outer box
(4), several layers metallic reflection paillon (7), outside gamma shielding layer (6) and the Shell Plate (2) for keeping the temperature outer box, the boron carbide powder
Last (5) even dispersion is in the cavity between adjacent two layers metal foil (7)；Several layers metallic reflection paillon (7) is whole by just
To conical boss (8) and reversed conical boss (9), regular intervals arrange to form corrugated shape in length and breadth, and adjacent two layers metal is anti-
Penetrate backwards formula interfolded of the paillon (7) with the vertex of positive conical boss (8) to the vertex of reversed conical boss (9).
2. a kind of nuclear leve equipment according to claim 1 and pipeline disperse filled composite insulating layer, which is characterized in that institute
It is closed outer by being formed by welding one by the side coverboard (3) of inner hull (1), Shell Plate (2) and surrounding for stating heat preservation outer box
The side coverboard (3) of box, the inner hull (1), Shell Plate (2) and surrounding is all made of the austenitic stainless steel thin plate system in bimirror face
At.
3. a kind of nuclear leve equipment according to claim 2 and pipeline disperse filled composite insulating layer, which is characterized in that institute
State Co content mass percent≤1% of austenitic stainless steel thin plate.
4. a kind of nuclear leve equipment according to claim 1 and pipeline disperse filled composite insulating layer, which is characterized in that institute
It states inside gamma shielding layer (4) and outside gamma shielding layer (6) is all made of stereotype or tungsten alloy plate is made.
5. a kind of nuclear leve equipment according to claim 1 and pipeline disperse filled composite insulating layer, which is characterized in that institute
State the positive circular cone that metallic reflection paillon (7) are pressed into regular intervals arrangement in length and breadth using ultra-thin austenitic stainless steel foil
The line shape of boss (8) and reversed conical boss (9).
6. a kind of nuclear leve equipment according to claim 5 and pipeline disperse filled composite insulating layer, which is characterized in that institute
It states ultra-thin austenitic stainless steel foil to be made through solution annealing, double-sided light processing, and Co content mass percent≤1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811473742.0A CN109296869B (en) | 2018-12-04 | 2018-12-04 | Dispersion filling composite heat insulation layer for nuclear-grade equipment and pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811473742.0A CN109296869B (en) | 2018-12-04 | 2018-12-04 | Dispersion filling composite heat insulation layer for nuclear-grade equipment and pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109296869A true CN109296869A (en) | 2019-02-01 |
| CN109296869B CN109296869B (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811473742.0A Active CN109296869B (en) | 2018-12-04 | 2018-12-04 | Dispersion filling composite heat insulation layer for nuclear-grade equipment and pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112489824A (en) * | 2020-11-26 | 2021-03-12 | 中广核研究院有限公司 | Reactor cabin shielding device for compactly arranging small reactors |
| CN112918032A (en) * | 2021-02-09 | 2021-06-08 | 上海核工程研究设计院有限公司 | Heat insulation part for nuclear energy device |
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|---|---|---|---|---|
| CN1111872C (en) * | 1996-12-30 | 2003-06-18 | 常州飞机制造厂 | Metal insulating layer of nuclear reactor pressure vessel and pipeline |
| CN103174912A (en) * | 2013-01-14 | 2013-06-26 | 上海核工程研究设计院 | Nuclear power plant device and composite type insulating layer used for pipeline |
| CN103971761A (en) * | 2014-05-06 | 2014-08-06 | 中广核工程有限公司 | Metal reflection type insulating plate for radiation shielding in nuclear power station |
| CN207409270U (en) * | 2017-11-01 | 2018-05-25 | 上海核工程研究设计院有限公司 | A kind of radiation shielding structure applied to nuclear power station |
-
2018
- 2018-12-04 CN CN201811473742.0A patent/CN109296869B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111872C (en) * | 1996-12-30 | 2003-06-18 | 常州飞机制造厂 | Metal insulating layer of nuclear reactor pressure vessel and pipeline |
| CN103174912A (en) * | 2013-01-14 | 2013-06-26 | 上海核工程研究设计院 | Nuclear power plant device and composite type insulating layer used for pipeline |
| CN103971761A (en) * | 2014-05-06 | 2014-08-06 | 中广核工程有限公司 | Metal reflection type insulating plate for radiation shielding in nuclear power station |
| CN207409270U (en) * | 2017-11-01 | 2018-05-25 | 上海核工程研究设计院有限公司 | A kind of radiation shielding structure applied to nuclear power station |
Non-Patent Citations (1)
| Title |
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| 戴龙泽: "《乏燃料贮运用铝基碳化硼复合材料的屏蔽性能计算》", 《物理学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112489824A (en) * | 2020-11-26 | 2021-03-12 | 中广核研究院有限公司 | Reactor cabin shielding device for compactly arranging small reactors |
| CN112918032A (en) * | 2021-02-09 | 2021-06-08 | 上海核工程研究设计院有限公司 | Heat insulation part for nuclear energy device |
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| Publication number | Publication date |
|---|---|
| CN109296869B (en) | 2020-12-29 |
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