CN105788691B - A kind of cleaning device of damaged fuel assembly - Google Patents
A kind of cleaning device of damaged fuel assembly Download PDFInfo
- Publication number
- CN105788691B CN105788691B CN201610051976.0A CN201610051976A CN105788691B CN 105788691 B CN105788691 B CN 105788691B CN 201610051976 A CN201610051976 A CN 201610051976A CN 105788691 B CN105788691 B CN 105788691B
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- Prior art keywords
- fuel assembly
- damaged fuel
- cleaning device
- cylinder
- sodium
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- 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
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/28—Treating solids
- G21F9/30—Processing
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The present invention relates to a kind of removal device of radioactive pollution.To solve the problems, such as that sodium cold fast neutron reactor damaged fuel assembly in China's glues the removing of sodium, the present invention provides a kind of cleaning device of damaged fuel assembly.The cleaning device of the damaged fuel assembly includes outer barrel, inner cylinder, partition plate, overflow pipe, respiratory siphon and hangs cylinder；The inner cylinder is partitioned into two parts, and top is purge chamber, and lower part is overflow chamber；The cylinder that hangs is located at purge chamber's internal upper part, in infundibulate.The cleaning device of the damaged fuel assembly of the present invention is reasonable in design, simple operation, and while cleaning agent is ensured with viscous sodium normal reaction, the high-efficient cleaning for realizing reaction product removes, and greatly improves the utilization rate of cleaning agent.The present apparatus solves the problems, such as the removing that sodium cold fast neutron reactor damaged fuel assembly in China's glues sodium, glues the elimination efficiency height of sodium, elimination effect is good, preferably meets radwaste minimization principle.
Description
Technical field
The present invention relates to a kind of removal device of radioactive pollution, the cleaning dress of more particularly to a kind of damaged fuel assembly
Put.
Background technology
The cold fast neutron reactor of sodium, as its name suggests, be it is a kind of using nuclear reactor of the metallic sodium as cooling agent, its due to
Intrinsic a variety of excellent specific properties and there is good development prospect.In the cold fast neutron reactor of sodium, some reactor portion
Part can be in contact with metallic sodium, such as fuel assembly, sodium pipeline, therefore in these part replacements, it is necessary to being glued on its surface
Attached sodium is purged, to ensure the security of the processes such as later stage transport, processing.
For the not high generally viscous sodium component of radioactive level, it may be considered that carry out water cleaning to it so that adhesion
Sodium and water react, so as to reach removing purpose.However, for damaged fuel assembly, due to that can be discharged after its breakage
Go out it is a certain amount of it is high put material, make itself to be subject to high-caliber radioactive pollution.In this case, if still using water
The mode of cleaning removes sodium, then can produce substantial amounts of height and put waste water, seriously run counter to radwaste minimization principle；Meanwhile sodium with
Water reaction can produce substantial amounts of heat, the cut of breakage is further increased, therefore, it is difficult to be received by this area.
The removing of sodium is glued for the cold fast neutron reactor component of sodium, still has part document to carry out different journeys to it both at home and abroad
The disclosure of degree.However, gluing the removing of sodium for damaged fuel assembly, so far there are no arrives disclosed pertinent literature.Due to it is current I
State is in the sodium cold fast neutron reactor technology rapid development stage, therefore to ensure the cold fast neutron reactor research work of sodium
It is smoothed out, realizes the securely held of damaged fuel assembly, it is necessary to designs a kind of applicable cleaning device.
The content of the invention
To solve the problems, such as that sodium cold fast neutron reactor damaged fuel assembly in China's glues the removing of sodium, the present invention provides one kind
The cleaning device of damaged fuel assembly.
The cleaning device of the damaged fuel assembly includes outer barrel, inner cylinder, partition plate, overflow pipe, respiratory siphon and hangs cylinder；It is described outer
Cylinder and inner cylinder are the cylinder of bottom end closure；The inner cylinder is placed in outer barrel, and inner cylinder is divided into two parts by the partition plate, on
Portion is purge chamber, and lower part is overflow chamber；The overflow pipe is located in purge chamber, overflow pipe upper end opening, lower end and overflow chamber's phase
Connection；The respiratory siphon is located in purge chamber, respiratory siphon upper end opening, and openend is higher than overflow pipe upper end opening, lower end with
Overflow chamber is connected；The cylinder that hangs is located at purge chamber's internal upper part, hangs the upper and lower ends opening of cylinder, its upper shed is more than under shed,
In infundibulate, hang a upper open end and be equipped with pivot flange.
The outer barrel and inner cylinder are preferably cylinder.
It is preferred to be equipped with the purge chamber for the fixing device of fixed weir pipe and respiratory siphon, to prevent overflow pipe and is exhaled
Suction pipe is damaged under stress.
The fixing device is preferably locating ring.
The locating ring can be more than 2.
It is preferred that the inner wall upper limb of the inner cylinder, which is nearby equipped with lifting card slot,.
The upper limb for hanging cylinder is preferred equipped with lifting lug.
The respiratory siphon and overflow pipe all can be more.
The outside of the outer barrel is preferred equipped with electric heater.
It is preferred to use insulating layer outside the electric heater.
The cleaning device of the damaged fuel assembly of the present invention is used as cleaning agent using molten metal lead, in cleaning process, need
The sodium adhered on the cold fast neutron reactor damaged fuel assembly of the sodium to be cleaned reacts with the indoor lead of cleaning and generates alloy,
The high-efficient cleaning that sodium is glued so as to fulfill damaged fuel assembly removes.Since the alloy and the indoor lead of cleaning of reaction generation are cold after the reaction
But cure, therefore radioactive substance can be closed in wherein well, therefore avoid the diffusion of radioactive substance.After cleaning
Damaged fuel assembly damaged gap at can adhere to lead, can be good at closing these gaps after lead cooling and solidifying, effectively keep away
Radioactive substance is exempted from and external environment condition is discharged into by damaged gap.
In the cleaning device of the damaged fuel assembly of the present invention, outer barrel mainly shields, and prevents that inner cylinder is unexpected damaged
Caused by radioactive substance leak；Respiratory siphon is used for balancing overflow room and exterior air pressure, it is ensured that flooding process is normally carried out；Hang
Using for cylinder is so that inserting more accurately for damaged fuel assembly, simple operation.
In conclusion the cleaning device of the damaged fuel assembly of the present invention is reasonable in design, simple operation, is ensuring clearly
While lotion is with viscous sodium normal reaction, the high-efficient cleaning for realizing reaction product removes, and greatly improves the utilization rate of cleaning agent.This
Device solves the problems, such as the removing that sodium cold fast neutron reactor damaged fuel assembly in China's glues sodium, glues the elimination efficiency height of sodium, clearly
Except effect is good, radwaste minimization principle is preferably met.
Brief description of the drawings
The cleaning device schematic diagram of the damaged fuel assembly of Fig. 1 present invention.
Reference numeral：1. outer barrel, 2. inner cylinders, 3. partition plates, 4. overflow pipes, 5. respiratory siphons, 6. hang cylinder, and 7. purge chambers, 8. overflow
Flow chamber, 9. pivot flanges, 10. fixing devices, 11. lifting card slots, 12. lifting lugs.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Figure 1, the cleaning device of damaged fuel assembly of the invention includes outer barrel 1, inner cylinder 2, partition plate 3, overflow
Pipe 4, respiratory siphon 5 and hang cylinder 6；The outer barrel 1 and inner cylinder 2 are the cylinder of bottom end closure；The inner cylinder 2 is placed in inside outer barrel 1,
Inner cylinder 2 is divided into two parts by the partition plate 3, and top is purge chamber 7, and lower part is overflow chamber 8；The overflow pipe 4 is positioned at cleaning
In room 7,4 upper end opening of overflow pipe, lower end is connected with overflow chamber 8；The respiratory siphon 5 is located in purge chamber 7, on respiratory siphon 5
End opening, and openend is higher than 4 upper end opening of overflow pipe, lower end is connected with overflow chamber 8；The cylinder 6 that hangs is located in purge chamber 7
Top, hangs the upper and lower ends opening of cylinder 6, its upper shed is more than under shed, in infundibulate, hangs 6 upper open end of cylinder and is equipped with supporting methods
Orchid 9.
The fixing device 10 for fixed weir pipe 4 and respiratory siphon 5 can be used in the purge chamber 7；The inner cylinder 2
Inner wall upper limb can nearby be equipped with lifting card slot 11；The upper limb for hanging cylinder 6 can be equipped with lifting lug 12.
Embodiment 2
Using embodiment 1 damaged fuel assembly cleaning device to the damaged fuel assembly of the cold fast neutron reactor of certain sodium
Cleaned, its basic process is as follows：
(1) appropriate metallic lead is added to inner cylinder 2, heating melts lead；
(2) damaged fuel assembly is hung in 2 purge chamber 7 of inner cylinder by hanging 6 center of cylinder, immerses damaged fuel assembly molten
In the lead melted；The sodium adhered on damaged fuel assembly gradually reacts generation alloy, the entry material of fusing with the lead in purge chamber 7
Overflow chamber 8 is flowed into by overflow pipe 4；
(3) after reaction, damaged fuel assembly is sling by inner cylinder 2, stops heating, complete cleaning.
Claims (10)
- A kind of 1. cleaning device of damaged fuel assembly, it is characterised in that：The cleaning device of the damaged fuel assembly include outer barrel, Inner cylinder, partition plate, overflow pipe, respiratory siphon and hang cylinder；The outer barrel and inner cylinder are the cylinder of bottom end closure；The inner cylinder is placed in outer Cylinder is internal, and inner cylinder is divided into two parts by the partition plate, and top is purge chamber, and lower part is overflow chamber；The overflow pipe is positioned at clear In chamber wash, overflow pipe upper end opening, lower end is connected with overflow chamber；The respiratory siphon is located in purge chamber, and respiratory siphon upper end is opened Mouthful, and openend is higher than overflow pipe upper end opening, lower end is connected with overflow chamber；The cylinder that hangs is located at purge chamber's internal upper part, hangs The upper and lower ends opening of cylinder, its upper shed are more than under shed, in infundibulate, hang a upper open end and be equipped with pivot flange.
- 2. the cleaning device of damaged fuel assembly as claimed in claim 1, it is characterised in that：The outer barrel and inner cylinder are circle Cylinder.
- 3. the cleaning device of damaged fuel assembly as claimed in claim 1, it is characterised in that：It is equipped with and is used in the purge chamber The fixing device of fixed weir pipe and respiratory siphon.
- 4. the cleaning device of damaged fuel assembly as claimed in claim 3, it is characterised in that：The fixing device is positioning Ring.
- 5. the cleaning device of damaged fuel assembly as claimed in claim 4, it is characterised in that：The locating ring is more than 2.
- 6. the cleaning device of damaged fuel assembly as claimed in claim 1, it is characterised in that：The inner wall upper limb of the inner cylinder is attached It is near to be equipped with lifting card slot.
- 7. the cleaning device of damaged fuel assembly as claimed in claim 1, it is characterised in that：The upper limb for hanging cylinder is equipped with and hangs Ear.
- 8. the cleaning device of damaged fuel assembly as claimed in claim 1, it is characterised in that：The respiratory siphon and overflow pipe are equal For more.
- 9. the cleaning device of damaged fuel assembly as claimed in claim 1, it is characterised in that：The outside of the outer barrel is equipped with electricity Heater.
- 10. the cleaning device of damaged fuel assembly as claimed in claim 1, it is characterised in that：Adopted outside the electric heater Use insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051976.0A CN105788691B (en) | 2016-01-26 | 2016-01-26 | A kind of cleaning device of damaged fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051976.0A CN105788691B (en) | 2016-01-26 | 2016-01-26 | A kind of cleaning device of damaged fuel assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105788691A CN105788691A (en) | 2016-07-20 |
| CN105788691B true CN105788691B (en) | 2018-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610051976.0A Active CN105788691B (en) | 2016-01-26 | 2016-01-26 | A kind of cleaning device of damaged fuel assembly |
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| CN (1) | CN105788691B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051957A (en) * | 2017-04-14 | 2017-08-18 | 中国原子能科学研究院 | It is a kind of to remove the method that sodium is glued on damaged irradiated fuel assembly surface |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205334980U (en) * | 2016-01-26 | 2016-06-22 | 中国原子能科学研究院 | Damaged fuel assembly's belt cleaning device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671878B (en) * | 2011-03-10 | 2014-06-04 | 中国原子能科学研究院 | Fast reactor spent component cleaning device |
| CN202584751U (en) * | 2012-05-28 | 2012-12-05 | 中国原子能科学研究院 | Sodium removal device for sodium-cooled fast reactor fuel component |
| CN103100528B (en) * | 2013-02-06 | 2015-03-11 | 中国原子能科学研究院 | Process and system of cleaning and removing sodium |
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- 2016-01-26 CN CN201610051976.0A patent/CN105788691B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205334980U (en) * | 2016-01-26 | 2016-06-22 | 中国原子能科学研究院 | Damaged fuel assembly's belt cleaning device |
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| Publication number | Publication date |
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| CN105788691A (en) | 2016-07-20 |
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