CN209684483U - A kind of neutron source sealed storage tank of locking device - Google Patents
A kind of neutron source sealed storage tank of locking device Download PDFInfo
- Publication number
- CN209684483U CN209684483U CN201920076053.XU CN201920076053U CN209684483U CN 209684483 U CN209684483 U CN 209684483U CN 201920076053 U CN201920076053 U CN 201920076053U CN 209684483 U CN209684483 U CN 209684483U
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- tank
- locking device
- tank wall
- neutron source
- storage tank
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Abstract
The utility model relates to a kind of neutron source sealed storage tanks of locking device, include tank wall, inner tank wall, the tank body being arranged between the inner tank wall and tank wall, the protective layer being arranged between the inner tank wall and tank wall, the top cover being arranged on the tank body top and the locking device being arranged between the top cover and tank body；In this programme on the basis of guaranteeing basic protection, the sealing performance of tank body is significantly improved, ensure that the quality that neutron source is stored for a long time in storage tank, the disclosure risk of radioactive source when reducing storage and operation.
Description
Technical field
The utility model relates to radiation protection technique field, especially a kind of neutron source sealed storage of locking device
Tank.
Background technique
With the fast development of civilian nuclear energy technology, from hand-held radioactive source to the research reactor of neutron research facilities and fission
Source, more and more neutron source apparatus physics, engineering, medicine, nuclear weapon, oil exploration, biology, chemistry, nuclear power and its
There is wider purposes in his industry, thus bring radiation safety also becomes more and more important with protection question.Due in
The neutron penetrability that source arrangement issues is extremely strong, protects improper or understands to ambient enviroment, personnel and instrument if revealing
Device equipment etc. causes stronger radiation injury, so carrying out radiation protection optimization design to neutron source sealed storage tank, avoids out
Show radiation injury, it is ensured that use is safe, is that the radiological hazard wind of neutron source sealed storage tank in use is effectively reduced
The effective means of danger.
Utility model content
Purpose of the utility model is to solve defects of the existing technology, provide a kind of neutron of locking device
Source sealed storage tank, it is excellent with protective performance for the neutron source sealed storage tank, structure is reliable, it is biggish to be applicable to the temperature difference
The advantages that environment, while there is good physical property and mechanical performance, there are good popularization and application in radiation protection field
Value.
To achieve the goals above, the technical solution adopted in the utility model is:
A kind of neutron source sealed storage tank of locking device includes tank wall, inner tank wall, setting in the tank
The tank body between wall and tank wall, the protective layer being arranged between the inner tank wall and tank wall, setting are in institute in vivo
The locking device stating the top cover on tank body top and being arranged between the top cover and tank body, wherein the protective layer includes
The slowing down absorbed layer and absorbed layer being arranged from inside to outside, the slowing down absorbed layer are made of boron polyethylene, and the absorbed layer is by cadmium
It constitutes.
Further, the protective layer further includes having supplement protective layer, and the supplement protective layer is made of lead, wherein the benefit
Fill the outside that the absorbed layer is arranged in protective layer.
Further, the tank wall and inner tank wall are to be made using stainless steel material, wherein outside the tank body
Wall and inner tank wall use argon arc welding welding to surround sealed shell of tank structure.
Further, the carrying ring being also welded with for carrying is placed outside the tank wall.
Further, the sealing ring of resistance to neutron irradiation is additionally provided between the top cover and tank body.
Further, the slowing down absorbed layer and absorbed layer are to be fixed together by glue sticking, the absorbed layer and supplement
Protective layer is to be fixed together by glue sticking.
The utility model has the following beneficial effects: making the leakproofness of tank body on the basis of guaranteeing basic protection in this programme
It can significantly improve, ensure that the quality that neutron source is stored for a long time in storage tank, the leakage wind of radioactive source when reducing storage and operation
Danger；Overall construction design mainly considers to protect and seal two key elements, by increasing protective layer, is protected with MULTILAYER COMPOSITE
Mode is realized to neutron shield and the gamma-ray shielding generated during absorbing neutron；By in top cover and tank body
Between increase sealing ring and locking device, ensured the sealing performance of storage tank；This neutron source sealed storage tank has protective
Can be excellent, structure is reliable, airtight performance is good the advantages that, while there is good physical property and mechanical performance, it is led in radiation protection
Domain has good application value.
Detailed description of the invention
Fig. 1 is the neutron source sealed storage jar structure schematic diagram of locking device in the utility model.
In figure:
1- tank wall, 2- supplement protective layer, 3- absorbed layer, 4- slowing down absorbed layer, 5- carrying ring, 6- locking device hand
Handle, 7- locking device fixing groove, 8- seal groove, 9- sealing ring, 10- top cover, 11- tank body, 12- inner tank wall.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawings of the specification.
The present embodiment is that the neutron penetrability that issues for existing neutron source apparatus is extremely strong, and it is improper or let out to protect
The problem of causing stronger radiation injury to ambient enviroment, personnel and instrument and equipment etc. if dew, and then the one kind proposed
The neutron source sealed storage tank of locking device, it is excellent with protective performance for the neutron source sealed storage tank, structure is reliable, can fit
For there is the biggish environment of the temperature difference, while there is good physical property and mechanical performance, has in radiation protection field
There is good application value.
As shown in Figure 1, the neutron source sealed storage tank of the locking device in the present embodiment comprising have tank wall 1,
Inner tank wall 12, is arranged in inner tank wall 12 and tank wall the tank body 11 being arranged between inner tank wall 12 and tank wall 1
Protective layer, the top cover 10 being arranged on 11 top of tank body and the locking being arranged between top cover 10 and tank body 11 dress between 1
It sets, wherein protective layer includes the slowing down absorbed layer 4 and absorbed layer 3 being arranged from inside to outside, and slowing down absorbed layer 4 is by boron polyethylene structure
At absorbed layer 3 is made of cadmium.It further include having supplement protective layer 2 in protective layer, supplement protective layer 2 is made of lead, wherein supplement is anti-
The outside of absorbed layer 3 is arranged in sheath 2, and wherein slowing down absorbed layer 4 and absorbed layer 3 are to be fixed together by glue sticking, absorbs
Layer 3 and supplement protective layer 2 are to be fixed together by glue sticking.
Tank wall 1 and inner tank wall 12 are to be made using stainless steel material, material 0Cr18Ni10Ti, surface
It is readily cleaned and decontamination.Tank wall 1 and inner tank wall 12 using argon arc welding at obturator, to guarantee that noxious material will not be into
Enter in ambient enviroment.It should be noted that welding procedure in welding, guarantee that deflection is met the requirements.Furthermore attention pair in the welding process
The protection of shielded layer, avoid because local welding temperature it is excessively high caused by destruction to shielded layer.In addition, being placed outside tank wall 1
Also it is welded with the carrying ring 5 for carrying.
Meanwhile this programme is by offering locking device fixing groove 7 in the contact site of 11 wall of top cover 10 and tank body, and puts
The sealing ring of resistance to neutron irradiation 9 is set, sealing ring 9 passes through the seal groove 8 being provided with and is mounted between top cover 10 and tank body 11, improves close
Sealing property.Furthermore increase external locking device between top cover 10 and tank body 11, maintain the lock status under usual state, ensure
The sealing performance of storage tank.Sealing-locking device ensure that the quality that neutron source is stored for a long time in storage tank, reduce storage and behaviour
The disclosure risk of radioactive source when making.Referring to figure 1, the locking device in the present embodiment includes 6 He of locking device handle
Connecting rod, connecting rod are fixedly connected between locking device fixing groove 7 and locking device handle 6, realize the locking function to top cover 10.
The design of this neutron source sealed storage tank is to increase sealing-locking device in traditional storage tank, is being guaranteed substantially
On the basis of protection, the sealing performance of tank body is significantly improved, ensure that the quality that neutron source is stored for a long time in storage tank, reduced
The disclosure risk of radioactive source when storage and operation.Overall construction design mainly considers to protect and seal two key elements.Pass through
Increase protective layer, the mode protected with MULTILAYER COMPOSITE is realized to neutron shield and the γ generated during absorbing neutron
The shielding of ray；By increasing sealing ring 9 and locking device between top cover 10 and tank body, the leakproofness of storage tank has been ensured
Energy.
In protective layer design aspect: shielded layer is by Boron-containing-PE (slowing down absorbed layer 4), cadmium (absorbed layer 3), lead (supplement
Protective layer 2) composition, outermost layer be stainless steel (since lead and cadmium and its compound have certain toxicity, entire shielded layer it is outer by
The closed cladding of stainless steel prevents lead and cadmium from entering in environment and causes damages to operating personnel).Due to the atomic mass and hydrogen of neutron
The atomic mass of atom is close, therefore, when elastic collision occurs for hydrogen nuclei in fast neutron and shield, is easiest to its energy
Amount passes to hydrogen nuclei and off-energy, to be slow neutron and thermal neutron by Moderation of the fast neutrons.Hydrogen content is got in shield
More, then slowing down effect is stronger, and in the hydrogen content of more commonly used neutron shielding material, polyethylene hydrogen content highest is during shielding is fast
The best moderator of son.Fast neutron after thermal neutron, need to make neutron dose be down to level of security by slowing down.The sealing of this neutron source is deposited
The structure type of the MULTILAYER COMPOSITEs such as the used Moderation of the fast neutrons layer of storage tank, neutron absorption layer and gamma shield shielding, can
Effectively thermal neutron, fast neutron and the gamma-rays of shielding neutron source generation makes storage tank while effective protection neutron to scattered
It penetrates gamma-rays and has carried out effective shielding, neutron irradiation is effectively prevent to generate radiation hazradial bundle and damage to occupation work personnel and the public
Wound.
In terms of sealing locking: the design of this neutron source sealed storage tank is to increase sealing locking in traditional storage tank
Device significantly improves the sealing performance of tank body on the basis of guaranteeing basic protection.Pass through the contact in top cover with tank wall
Position fluting, and the sealing ring of resistance to neutron irradiation is placed, improve sealing performance.Furthermore increase external locking between top cover and tank body
Device maintains the lock status under usual state, has ensured the sealing performance of storage tank.Sealing-locking device ensure that in storage tank
The quality that neutron source is stored for a long time, the disclosure risk of radioactive source when reducing storage and operation.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only the principles of the present invention, the utility model also has respectively on the premise of not departing from the spirit and scope of the utility model
Kind changes and improvements, these changes and improvements are both fallen in the range of claimed invention.The requires of the utility model
Protection scope defined by appended claims and its equivalent.
Claims (6)
1. a kind of neutron source sealed storage tank of locking device, it is characterised in that: include tank wall, inner tank wall, set
The protection setting the tank body between the inner tank wall and tank wall, being arranged between the inner tank wall and tank wall
Layer, the top cover being arranged on the tank body top and the locking device being arranged between the top cover and tank body, wherein described
Protective layer includes the slowing down absorbed layer and absorbed layer being arranged from inside to outside, and the slowing down absorbed layer is made of boron polyethylene, institute
Absorbed layer is stated to be made of cadmium.
2. a kind of neutron source sealed storage tank of locking device according to claim 1, it is characterised in that: the protection
Layer further includes having supplement protective layer, and the supplement protective layer is made of lead, wherein the supplement protective layer is arranged in the absorption
The outside of layer.
3. a kind of neutron source sealed storage tank of locking device according to claim 1 or 2, it is characterised in that: described
Tank wall and inner tank wall are to be made using stainless steel material, wherein the tank wall and inner tank wall use argon arc
Weldering welding surrounds sealed shell of tank structure.
4. a kind of neutron source sealed storage tank of locking device according to claim 1, it is characterised in that: the tank body
The carrying ring being also welded with for carrying is placed outside outer wall.
5. a kind of neutron source sealed storage tank of locking device according to claim 1, it is characterised in that: on the top
The sealing ring of resistance to neutron irradiation is additionally provided between lid and tank body.
6. a kind of neutron source sealed storage tank of locking device according to claim 2, it is characterised in that: the slowing down
Absorbed layer and absorbed layer are to be fixed together by glue sticking, and the absorbed layer and supplement protective layer are to be fixed on by glue sticking
Together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920076053.XU CN209684483U (en) | 2019-01-17 | 2019-01-17 | A kind of neutron source sealed storage tank of locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920076053.XU CN209684483U (en) | 2019-01-17 | 2019-01-17 | A kind of neutron source sealed storage tank of locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209684483U true CN209684483U (en) | 2019-11-26 |
Family
ID=68599073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920076053.XU Active CN209684483U (en) | 2019-01-17 | 2019-01-17 | A kind of neutron source sealed storage tank of locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209684483U (en) |
-
2019
- 2019-01-17 CN CN201920076053.XU patent/CN209684483U/en active Active
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