CN110379530A - A kind of effective interlayer of biological shielding wall, biological shielding wall and unit - Google Patents
A kind of effective interlayer of biological shielding wall, biological shielding wall and unit Download PDFInfo
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- CN110379530A CN110379530A CN201910738505.0A CN201910738505A CN110379530A CN 110379530 A CN110379530 A CN 110379530A CN 201910738505 A CN201910738505 A CN 201910738505A CN 110379530 A CN110379530 A CN 110379530A
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- shielding wall
- biological shielding
- boron
- sheet metal
- metal layer
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- 239000011229 interlayer Substances 0.000 title claims abstract description 16
- 239000010410 layer Substances 0.000 claims abstract description 79
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 68
- 229910052796 boron Inorganic materials 0.000 claims abstract description 68
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000004698 Polyethylene Substances 0.000 claims abstract description 35
- 229910001245 Sb alloy Inorganic materials 0.000 claims abstract description 30
- 239000002140 antimony alloy Substances 0.000 claims abstract description 30
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 8
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 8
- -1 polyethylene Polymers 0.000 claims abstract description 8
- 229920000573 polyethylene Polymers 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 17
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 229910000838 Al alloy Inorganic materials 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 abstract description 14
- 230000005855 radiation Effects 0.000 abstract description 14
- 230000005251 gamma ray Effects 0.000 abstract description 10
- 238000012216 screening Methods 0.000 abstract description 8
- 230000004888 barrier function Effects 0.000 description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 39
- 229910052782 aluminium Inorganic materials 0.000 description 39
- 239000004411 aluminium Substances 0.000 description 27
- 238000001956 neutron scattering Methods 0.000 description 14
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 5
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 229910052580 B4C Inorganic materials 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Particle Accelerators (AREA)
- Measurement Of Radiation (AREA)
Abstract
The present invention relates to a kind of effective interlayer of biological shielding wall, biological shielding wall and units.Effective interlayer of the biological shielding wall successively includes boron-loaded rubber layer, lead-antimony alloy sheet metal layer and Boron-containing-PE sheet metal layer, above layers sequentially stack when work, boron-loaded rubber layer is near radiation source, wherein the material of the boron-loaded rubber layer is the rubber that boron content is 3%-5%；The material of the lead-antimony alloy sheet metal layer is the lead-antimony alloy that antimony content is 3%-5%；The material of the Boron-containing-PE sheet metal layer is the polyethylene that boron content is 3%-10%.The stray neutron and gamma ray that the present invention can be generated effectively during screening experiment, the biological shielding wall of the neutron spectrometer compact suitable for lab space, easy to install, easy nondestructive demounting, convenient for migrating, reusing, it is particularly suitable for the biological shielding wall of the neutron spectrometer of high-intensity magnetic field sample environment and polarized neutrons experiment.
Description
Technical field
The present invention relates to biological shielding technical fields, and in particular to a kind of effective interlayer of biological shielding wall, biological shielding
Wall and biological shielding wall unit.
Background technique
In recent years with national development large scientific facilities, China Advanced Research Reactor CARR, Chinese Mianyang research reactor CMRR, in
The fast development in state's spallation neutron target CSNS isotonic source, the construction of neutron scattering spectrometer also increase increasingly, therefore shield to biology
The requirement for covering wall is also increasing.
Neutron scattering spectrometer is usually after neutron is directed to conduit hall with neutron guide tube, to divide on each conduit bunch
More spectrometers are not established.Would generally be generated during carrying out neutron scattering experiment using neutron scattering spectrometer it is a large amount of it is spuious in
Son and gamma ray, effective shielding protection measure not only may insure the safety of experiment operator, can also reduce to phase
The influence of adjacent instrument.Simultaneously in order to build instrument as much as possible in conduit hall, the space occupied of barrier shield should be as far as possible
It is few, therefore the shielding protection of compact is very necessary.
In addition, neutron scattering experiment is to extreme sample environment (especially high-intensity magnetic field sample loop with the development of modern science
Border) and polarized neutrons experiment using increasing.When using high-intensity magnetic field sample environment, spuious magnetic can be generated around magnet
, this requires the substances that can not be magnetic in high-intensity magnetic field sample environment a certain range；When progress polarized neutrons scattering experiment
When, it needs to polarize to neutron using guidance magnetic field, to guarantee that guidance magnetic field requires ambient enviroment without magnetic without interruption.
In the prior art, loaded concrete can shield neutron but also shield gamma ray, be widely used in neutron screen
Cover material.Often contain a large amount of magnetic element in the barrier shield of this traditional loaded concrete casting, and bulky.In recent years
Come, there are also the shielding constructions that screening arrangement takes Boron-containing-PE to combine with loaded concrete, but space occupied is still larger,
It is not suitable for the spectrometer of lab space anxiety.
Other screening arrangements, as steel plate and Boron-containing-PE board group at split shield door or suspension translation door, boron carbide
The barrier shield etc. of panel composition cannot expire because cannot effectively shield neutron and the factors such as gamma radiation or self structure complexity simultaneously
Foot requires.Under complicated radiation environment, the biological shielding wall of high efficient and reliable needs reasonably to select neutron shielding material and gal
Horse radiation shielding material, and rationally design each shielding thickness and distributing order.
Summary of the invention
The present invention devise a kind of no magnetic, compact, readily removable easy to install, moveable, reusable, energy
The effectively neutron scattering spectrometer biological shielding wall of shielding neutron and gamma ray, is widely portable under complicated radiation environment
The biology screen of the biological shielding of sub- spectrometer, especially cold neutrons polarization spectrometer and the spectrometer using the extreme sample environment of high-intensity magnetic field
It covers.
The biological shielding wall that the present invention designs takes " neutron shielding material+gamma ray shielding material+neutron shield material
The sandwich of material ".
Specifically, effective interlayer of biological shielding wall of the invention successively includes boron-loaded rubber layer, lead-antimony alloy sheet metal layer
With Boron-containing-PE sheet metal layer, above layers are sequentially stacked when work, wherein
The material of the boron-loaded rubber layer is the rubber that boron content is 3%-5%；
The material of the lead-antimony alloy sheet metal layer is the lead-antimony alloy that antimony content is 3%-5%；
The material of the Boron-containing-PE sheet metal layer is the polyethylene that boron content is 3%-10%.
The present invention also provides a kind of biological shielding walls, including front panel, rear panel and above-mentioned effective interlayer, the front
Plate is stacked in the outer surface of the boron-loaded rubber layer, and the rear panel is stacked in the outer surface of the Boron-containing-PE sheet metal layer.
Front panel is close to emitter surface, and rear panel is far from emitter surface.Front and back panels, which are mainly used for fixed and guard shield wall, to be had
Shielding material is imitated, boron-loaded rubber is mainly used for initial absorption neutron, and lead-antimony alloy is mainly used for absorbing gamma ray, the poly- second of boracic
Alkene plate is the further material for absorbing neutron.
The thickness of above-mentioned biological shielding wall, the front panel and rear panel is each about 3-5mm, boron-loaded rubber thickness degree about
For 3-5mm, lead-antimony alloy sheet metal layer thickness be about 3-5cm, the thickness of Boron-containing-PE sheet metal layer is about 3-5cm.
Above-mentioned biological shielding wall, the front panel and rear panel are that density is small, weaker to thermal neutron scattering, against corrosion
Of good performance, easily molded, lower-cost aluminium alloy.Preferably, the material of the front panel and rear panel is 6061
Type aluminium alloy.
The present invention also provides a kind of biological shielding wall unit, the biological shielding wall unit includes supporting adn fixing device and upper
Each layer is clamped by the supporting adn fixing device and by the supporting adn fixing device by the biological shielding wall stated, the biological shielding wall
Support is placed, and the material of the supporting adn fixing device is aluminium alloy.
Above-mentioned biological shielding wall unit, the supporting adn fixing device include pedestal and fixed frame, are set on the pedestal
Fluted, loaded in the groove, the fixed frame frame is set to outside the biological shielding wall for the bottom of the biological shielding wall
Surface.
Above-mentioned biological shielding wall unit, the pedestal are substrate, and the fixed frame includes rib and gusset, the muscle
Item is tightly attached to the two sides panel installation of the biological shielding wall, and the rib of biological shielding wall two sides clamps the biological shielding
Wall, the rib top and bottom are to be detachably connected, the rib bottom and the link of boards, the gusset again with institute
State substrate connection.
Above-mentioned biological shielding wall unit, the supporting adn fixing device further includes connecting plate, and the connecting plate is installed on institute
The top of rib is stated, the connecting plate connects the rib of biological shielding wall two sides.
Above-mentioned biological shielding wall unit, the connecting plate are equipped with hole for hoist, and the end of the connecting plate is equipped with baffle.
Above-mentioned biological shielding wall unit, the biological shielding wall unit further include pneumatic translating device, described pneumatic flat
Moving device includes two groups of air cushion groups, and the air cushion group is installed on the lower section of the biological shielding wall, and the biological shielding wall passes through
The supporting adn fixing device is connect with the air cushion.
Biological shielding wall of the invention uses " front panel+boron-loaded rubber layer+lead-antimony alloy sheet metal layer+Boron-containing-PE
The sandwich of sheet metal layer+rear panel ", each shielded layer can be connected by aluminium ribs, and groove is arranged in pedestal, be limited barrier shield
Position forms biological shielding wall unit.
Biological shielding wall of the invention can effectively shield neutron and gamma radiation, and compact-sized, save lab space；Its
Secondary, the biological shielding wall in the present invention is readily disassembled, installs, and exists in the form of unit, and this structure allows our roots
According to needing freely to be combined multiple unit screening arrangements, efficiently to utilize lab space, meanwhile, the structure of this unit makes
It obtains while bulk shielding wall is easily installed and is also easy to nondestructive demounting, and can be used again.In addition, the present invention pneumatically translates dress
That sets uses the movement for making barrier shield more easily to operate, and performance is more stable.
Present invention is particularly suitable for the biological shielding wall built in the cold neutrons scattering spectrometer in neutron guide tube hall, Ke Yiyou
The stray neutron and gamma ray generated during effect ground screening experiment.
The present invention is suitable for the biological shielding wall of the compact neutron spectrometer of lab space.
Biological shielding wall of the invention is easy to install, easy nondestructive demounting, convenient for migration, reuses.
Biological shielding wall of the invention can exist with cell block, and convenient for being built into barrier shield of various shapes, the present invention is outstanding
It is suitable for building the barrier shield of experimental site neutron spectrometer in irregular shape.
Biological shielding wall of the invention uses non-magnetic material, suitable for high-intensity magnetic field sample environment and polarized neutrons experiment
The radiation shield of sub- spectrometer.
Detailed description of the invention
Fig. 1 is the schematic perspective view of one embodiment of the invention；
Fig. 2 is that the side of one embodiment of the invention in Fig. 1 has the structural schematic diagram of broken section；
Fig. 3 is the enlarged structure schematic diagram of I in Fig. 2；
Drawing reference numeral explanation:
1: barrier shield
2: rib
3: substrate
4: gusset
5: connecting plate
6: baffle
7: pneumatic translating device
1-1: front panel
1-2: boron-loaded rubber
1-3: lead-antimony alloy plate
1-4: Boron-containing-PE plate
1-5: rear panel.
Specific embodiment
Presently preferred embodiments of the present invention is described in detail below with reference to attached drawing, it is of the invention to be clearer to understand
Objects, features and advantages.It should be understood that embodiment shown in the drawings does not limit the scope of the present invention, and only it is
Illustrate the connotation of technical solution of the present invention.
The purpose of the invention is to design a kind of no magnetic, compact, it is readily removable it is easy to install, moveable, can weigh
Neutron scattering spectrometer biological shielding wall using again, can effectively shielding neutron and gamma ray, and can be generally applicable
The biological shielding of neutron spectrometer under complicated radiation environment, especially polarized neutrons spectrometer and the use extreme sample loop of high-intensity magnetic field
The biological shielding of the spectrometer in border.
The biological shielding wall is sandwich, includes successively front panel, boron-loaded rubber layer, lead-antimony alloy sheet metal layer, contains
Boron polyethylene sheet metal layer and rear panel, above layers sequentially stack when work, and front panel is towards radiation source direction.
As shown in figure 3, the barrier shield 1 takes sandwich, including front panel 1-1, boron-loaded rubber layer 1-2, lead antimony
Sheet alloy layer 1-3, Boron-containing-PE sheet metal layer 1-4, rear panel 1-5.
It is calculated according to the investigation of inventor and simulation, determines that the thickness of the front panel and rear panel is each about 3-5mm, contains
Boron rubber layer thickness is about 3-5mm, lead-antimony alloy sheet metal layer thickness is about 3-5cm, the thickness of Boron-containing-PE sheet metal layer is about
3-5cm.Under the design condition of this kind of thickness, preferable biological shielding effect can be obtained.The front panel and rear panel are used
In the fixed interlayer between protection front panel and rear panel, the front panel and rear panel are low-density, scattered to thermal neutron
Penetrate that weaker, corrosion resistance is good, easy to process, lower-cost alloy.
It selects to need to guarantee that neutrons more as far as possible can be through protective layer by barrier shield when barrier shield protection panels first
Neutron absorbing layer (boron-loaded rubber layer) capture, rather than protected seam scattering is (if a large amount of neutrons scatter to instrument by protection panels
Device operation area, the neutron scattered can generate radiation with each component further occurrence interaction of instrument, increase Experimental Background
While but also radiation shielding it is more complicated).In addition, the corrosion resistance of protection panels, workability and cost etc. are also all
It should be taken into account.According to the thermal neutron scattering number of cross-sections of Neutron News, Vol.3,1992, the pp.29-37 each element provided
According to neutron scattering section (unit: barn) data of common metallic element are as follows: Mg:3.71, Al:1.503, Ti:4.35,
Fe:11.62, Ni:18.5, Cu:8.03, Zn:4.131.Neutron scattering sectional area describes neutron and interacts with material
A possibility that.In summary consider, select that neutron scattering capability is weak, corrosion stability is good, easily molded, lower-cost aluminium closes
Material of the gold as front panel and rear panel.
Preferably, front and back panels are 6061 type aluminum alloy materials.
Boron-loaded rubber is the rubber that boron content is 3%-5%, and lead-antimony alloy is the lead-antimony alloy that antimony content is 3%-5%,
Boron-containing-PE is the polyethylene that boron content is 3%-10%.
Wherein, front panel is close to emitter surface, and rear panel is far from emitter surface, from close emitter surface to far from spoke
The face She Yuan, effective each layer of biological shielding wall are followed successively by boron-loaded rubber layer, lead-antimony alloy sheet metal layer, Boron-containing-PE sheet metal layer.Before
Panel and rear panel are mainly used for fixed and guard shield wall effective shielding material, and boron-loaded rubber is mainly used in initial absorption
Son, lead-antimony alloy are mainly used for absorbing gamma ray, and Boron-containing-PE plate is the main material for absorbing neutron.The neutron of boron
Absorption efficiency will be high than steel and loaded concrete, and the density of Boron-containing-PE is much smaller than steel plate and loaded concrete, so this
The volume and weight of the barrier shield of sandwich is all more much smaller than traditional loaded concrete shield wall.
The shape of barrier shield is unlimited, can be rectangle, polygon etc..
The present invention also provides a kind of biological shielding wall unit, the biological shielding wall unit includes supporting adn fixing device and upper
Each layer is clamped by the supporting adn fixing device and by the supporting adn fixing device by the biological shielding wall stated, the biological shielding wall
Support is placed, and the material of the supporting adn fixing device is aluminium alloy.
Specifically, according to one embodiment of present invention, which illustrates by taking rectangular shield wall as an example.The support is solid
Determining device may include pedestal and fixed frame, and as shown in Figure 1, 2, the pedestal can be substrate 3, which is provided with groove, the life
Loaded in the groove, the fixed frame frame is set to biological shielding wall outer surface for the bottom of object barrier shield 1.
As shown in Figure 1, 2, the fixed frame may include rib 2 and gusset 4, and the rib 2 is tightly attached to the biology screen
The two sides panel installation of wall 1 is covered, the rib 2 of 1 two sides of biological shielding wall clamps the biological shielding wall 1, and the rib 2 pushes up
End and bottom are to be detachably connected, and 2 bottom of rib is connect with the gusset 4, and the gusset 4 connects with the substrate 3 again
It connects.
The quantity of rib and gusset with no restriction, can be set as needed.
Certainly, the mode that above-mentioned rib frame is set is not limited to the panel side in the barrier shield, can also be in the screen
The edge of wall is covered, the frame of similar photo frame type sets mode.
Clamping between rib can be connected by way of screw, can also be connected by way of buckle.Such as
Rib top, screw two ribs of connection, which can be directly used, makes its clamp barrier shield, and buckle can also be installed on rib
The fastening components of class, close rib tightly.Moreover, the gusset below rib is also not necessary part, it can also be directly by muscle
Item is connected with pedestal.
Above-mentioned biological shielding wall unit, the supporting adn fixing device may also include connecting plate, as shown in Figure 1, 2, described
Connecting plate 5 is installed on the top of the rib 2, and the connecting plate 5 can connect the rib of biological shielding wall two sides.
Further, in order to facilitate the lifting of barrier shield, hole for hoist can be equipped on the connecting plate 5.In order to make full use of screen
Other auxiliary functions of the components of wall upper end are covered, for example hang some articles in upper end, gear can be equipped in the end of connecting plate
Plate 6.
Certainly, supporting adn fixing device of the invention can be not limited to above-mentioned embodiment, such as pedestal and fixed frame
It can be other structure type, such as similar to the structure of clip etc, when needing using biological shielding wall, in biological shielding wall
Surrounding clamps interlayer, when not needing using biological shielding wall, can unclamp clip structure, each layer of biological shielding wall is unloaded
Under.Clip can be set in the upper and lower of barrier shield or left and right, can also all be configured around barrier shield.
Certain supporting adn fixing device can also be other structure type, place as long as being suitble to clamp barrier shield.
The size of above-mentioned barrier shield unit generally may be designed as high 2 meters wide 1 meter of rectangular configuration.
In order to facilitate the movement of barrier shield, the biological shielding wall unit may also include pneumatic translating device, described pneumatic
Translating device includes two groups of air cushion groups, and the air cushion group is installed on the lower section of the biological shielding wall, and the biological shielding wall is logical
The supporting adn fixing device is crossed to connect with the air cushion group.The gas circuit opening of corresponding air cushion group can make barrier shield smoother
Ground moving turns off gas circuit after completing movement.Compared with traditional sliding rail mobile shielding device, pneumatic translating device is stablized
Property and safety are all more reliable, and unit will not be stuck because of gravity deformation.
Biological shielding wall of the invention can effectively shield neutron and gamma radiation, and compact-sized, save lab space；This
Biological shielding wall in invention is readily disassembled, installs, and exists in the form of unit, and this structure can according to need us
Freely multiple unit screening arrangements are combined, efficiently to utilize lab space, meanwhile, the structure of this unit makes entirety
It is also easily removable, and can be used again while barrier shield is easily installed.In addition, the use of the pneumatic translating device of the present invention makes
The movement for obtaining barrier shield more easily operates, and performance is more stable.
Present invention is particularly suitable for the biological shielding wall built in the cold neutrons scattering spectrometer in neutron guide tube hall, Ke Yiyou
The stray neutron and gamma ray generated during effect ground screening experiment.
The present invention is suitable for the biological shielding wall of the compact neutron spectrometer of lab space.
It is the easy nondestructive demounting of biological shielding wall of the invention, easy to install, convenient for migration, reuse.Positioned at French Ge Lenuo
Reconstruction must be all removed after ten thousand bright research each neutron scattering spectrometer military service Man Ershi of defined of the Laue-of boolean, with
Just the advance of spectrometer is kept.In this case, the barrier shield of recycling easy to disassemble greatly reduces spectrometer reconstruction process
The workload and cost of disassembly, the reconstruction of middle biological shielding wall, while a large amount of radioactivity rubbish will not be generated because of barrier shield
Rubbish.
Biological shielding wall of the invention can exist with cell block, and convenient for being built into barrier shield of various shapes, the present invention is outstanding
It is suitable for building the barrier shield of experimental site neutron spectrometer in irregular shape.Neutron scattering spectrometer need to be built in neutron streaming
On line, for using reactor as the spectrometer of neutron source, each neutron beam streamline is radially distributed outward centered on reactor, because
The operation area that this each neutron spectrometer is assigned to is difficult to be regular rectangle, and is likely to irregular polygon.Meanwhile each spectrometer
Because of itself function difference, operation area area is also not quite similar.Shielding wall device can be according to each existing in the form of cell block
The concrete condition of platform spectrometer builds the polygon biological shielding wall of different shape, different area.
Biological shielding wall of the invention uses non-magnetic material, suitable for high-intensity magnetic field sample environment and polarized neutrons experiment
The biological shielding of sub- spectrometer.
Embodiment 1
Effective interlayer of the present embodiment biological shielding wall successively includes that boron-loaded rubber layer, lead-antimony alloy sheet metal layer and boracic are poly-
Ethylene plate layer, above layers sequentially stack when work, wherein
The material of the boron-loaded rubber layer is the rubber that boron content is 3%；
The material of the lead-antimony alloy sheet metal layer is the lead-antimony alloy that antimony content is 3%；
The material of the Boron-containing-PE sheet metal layer is the polyethylene that boron content is 3%.
As shown in Figure 1, 2, the biological shielding wall 1 of the present embodiment is supported by supporting adn fixing device and is placed.The support is solid
Determining device includes support fixed frame and aluminum substrate.Supporting fixed frame includes that 4 aluminium ribs, 2,4 blocks of aluminium gusset 4 and 2 block aluminium connect
Fishplate bar 5.4 aluminium ribs 2 are located at the two sides of barrier shield 1, and all there are threaded hole, aluminium muscle for every 2 top of aluminium ribs and bottom
2 bottom of item and aluminium gusset 4 pass through screw connection, can pass through screw connection with the aluminium connecting plate 5 for being equipped with through-hole at the top of aluminium ribs 2.
It is equipped with through-hole on the aluminium gusset 4 connecting with aluminium ribs 2, it can be by screw by aluminium gusset 4 and aluminum substrate phase using these through-holes
Even, so that aluminium ribs 2 are connected with aluminum substrate 3.It is equipped with through-hole on aluminium connecting plate 5, it, can after aluminium gusset 4 and aluminum substrate 3 are fixed
By adjusting the position of screw in aluminium gusset 4 and 5 through-hole of aluminium connecting plate, so that aluminium ribs 2 are vertical with aluminum substrate 3, barrier shield 1 is main
The distance between aluminium ribs 2 of body two sides are equal to the thickness of barrier shield.5 both ends of aluminium connecting plate are equipped with aluminium baffle 6, and experiment is facilitated to grasp
Make personnel hanging object and prevents object from sliding on barrier shield 1, in order to avoid cause unnecessary experiment accident.In aluminium connecting plate 5
Heart position is equipped with screw hole, mountable hanging ring, for lifting mobile barrier shield.
Aluminum substrate 3 is the pedestal of barrier shield, is the major bearing structures for supporting barrier shield, can be in cuboid, and four angles are equal
There are 45 ° of chamferings.It is provided with groove along long side midline position on aluminum substrate 3, recess width is equal with the thickness of barrier shield, so that shielding
Wall (being composed of preceding aluminum deck, boron-loaded rubber layer, lead-antimony alloy sheet metal layer, Boron-containing-PE sheet metal layer, rear aluminum deck) can
To be tightly embedded intp aluminium backing, tight fit is formed.The design of this sinking can play fixed limit to the barrier shield of sandwich
The effect of position, while but also barrier shield bottom is as close with ground as possible, reduce radiation leakage.Groove two sides symmetrically make a call to 16
A screw hole, for being separately connected 4 pieces of aluminium gussets 4, to fix 4 aluminium ribs 2.
The pneumatic translating device 7, it may include two groups of air cushion groups for being fixed on 3 bottom of aluminum substrate.Two groups of air cushion groups
Air cushion group mounting bracket can be fixed on aluminum substrate 3 by the mountable both ends in 3 bottom of aluminum substrate, air cushion group by bolt.When
When needing mobile barrier shield to specific position, it can be made smoother similar to marble etc the gas circuit opening of corresponding air cushion
Ground moving, complete it is mobile after turn off gas circuit.Compared with traditional sliding rail mobile shielding device, pneumatic translating device is steady
Qualitative and safety is all more reliable, will not be stuck because of gravity deformation.
Embodiment 2
Effective interlayer of the present embodiment biological shielding wall successively includes that boron-loaded rubber layer, lead-antimony alloy sheet metal layer and boracic are poly-
Ethylene plate layer, above layers sequentially stack when work, wherein
The material of the boron-loaded rubber layer is the rubber that boron content is 4%；
The material of the lead-antimony alloy sheet metal layer is the lead-antimony alloy that antimony content is 4%；
The material of the Boron-containing-PE sheet metal layer is the polyethylene that boron content is 8%.
The biological shielding wall and unit of the present embodiment are similar to 1 structure of embodiment, and details are not described herein again.
Embodiment 3
Effective interlayer of the present embodiment biological shielding wall successively includes that boron-loaded rubber layer, lead-antimony alloy sheet metal layer and boracic are poly-
Ethylene plate layer, above layers sequentially stack when work, wherein
The material of the boron-loaded rubber layer is the rubber that boron content is 5%；
The material of the lead-antimony alloy sheet metal layer is the lead-antimony alloy that antimony content is 5%；
The material of the Boron-containing-PE sheet metal layer is the polyethylene that boron content is 10%.
The biological shielding wall and unit of the present embodiment are similar to 1 structure of embodiment, and details are not described herein again.
The biological shielding wall of the embodiment of the present invention can effectively shield neutron and gamma radiation, and compact-sized, save experiment
Space；Biological shielding wall in the present invention is readily disassembled, installs, and exists in the form of unit, and this structure makes us can be with
Freely multiple unit screening arrangements are combined as needed, efficiently to utilize lab space, meanwhile, the structure of this unit
So that bulk shielding wall is also easy to nondestructive demounting while being easily installed, and can be used again.In addition, the present invention pneumatically translates
Device uses the movement for making barrier shield more easily to operate, and performance is more stable.
The various embodiments described above are merely to illustrate the present invention, and wherein each components, device of embodiment are all that can be become
Change, all equivalents and improvement carried out based on the technical solution of the present invention should not be excluded in guarantor of the invention
It protects except range.
Claims (10)
1. a kind of effective interlayer of biological shielding wall, which is characterized in that effective interlayer of the biological shielding wall successively includes containing
Boron rubber layer, lead-antimony alloy sheet metal layer and Boron-containing-PE sheet metal layer, above layers sequentially stack when work, wherein
The material of the boron-loaded rubber layer is the rubber that boron content is 3%-5%；
The material of the lead-antimony alloy sheet metal layer is the lead-antimony alloy that antimony content is 3%-5%；
The material of the Boron-containing-PE sheet metal layer is the polyethylene that boron content is 3%-10%.
2. a kind of biological shielding wall, including front panel, rear panel and effective interlayer described in claim 1, the front panel is folded
It is put in the outer surface of the boron-loaded rubber layer, the rear panel is stacked in the outer surface of the Boron-containing-PE sheet metal layer, described
Front panel and rear panel are used to fixing and protecting effective interlayer between front panel and rear panel, and the front panel and rear panel are
Aluminium alloy.
3. biological shielding wall according to claim 2, which is characterized in that the thickness of the front panel and rear panel is 3-
The thickness with a thickness of 3-5cm, Boron-containing-PE sheet metal layer with a thickness of 3-5mm, lead-antimony alloy sheet metal layer of 5mm, boron-loaded rubber layer
Degree is 3-5cm.
4. biological shielding wall according to claim 2 or 3, which is characterized in that the material of the front panel and rear panel is equal
For 6061 type aluminium alloys.
5. a kind of biological shielding wall unit, which is characterized in that the biological shielding wall unit includes supporting adn fixing device and right
It is required that 2 to 4 described in any item biological shielding walls, the biological shielding wall by the supporting adn fixing device by each layer clamp and by
The supporting adn fixing device support is placed, and the material of the supporting adn fixing device is aluminium alloy.
6. biological shielding wall unit according to claim 5, which is characterized in that the supporting adn fixing device include pedestal and
Fixed frame, the pedestal are equipped with groove, and the bottom of the biological shielding wall is loaded in the groove, the fixed frame frame
Set on biological shielding wall outer surface.
7. biological shielding wall unit according to claim 6, which is characterized in that the pedestal is substrate, the fixed frame
Frame includes rib and gusset, and the rib is tightly attached to the two sides panel installation of the biological shielding wall, the biological shielding wall two
The rib of side clamps the biological shielding wall, and the rib top and bottom are to be detachably connected, the rib bottom and institute
Link of boards is stated, the gusset is connect with the substrate again.
8. biological shielding wall unit according to claim 7, which is characterized in that the supporting adn fixing device further includes connection
Plate, the connecting plate are installed on the top of the rib, and the connecting plate connects the rib of biological shielding wall two sides.
9. biological shielding wall unit according to claim 8, which is characterized in that the connecting plate is equipped with hole for hoist, institute
The end for stating connecting plate is equipped with baffle.
10. according to the described in any item biological shielding wall units of claim 5 to 9, which is characterized in that the biological shielding wall list
Member further includes pneumatic translating device, and the pneumatic translating device includes air cushion, and the air cushion is installed on the biological shielding wall
Lower section, the biological shielding wall are connect by the supporting adn fixing device with the air cushion.
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Cited By (1)
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|---|---|---|---|---|
| CN113193473A (en) * | 2021-03-30 | 2021-07-30 | 北京工业大学 | Non-magnetized VCSEL laser packaging structure |
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| CN110379530B (en) | 2024-07-16 |
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