CN103915123B - A kind of local strengthening cooling system of spent fuel dry-type storage - Google Patents
A kind of local strengthening cooling system of spent fuel dry-type storage Download PDFInfo
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- CN103915123B CN103915123B CN201410116866.9A CN201410116866A CN103915123B CN 103915123 B CN103915123 B CN 103915123B CN 201410116866 A CN201410116866 A CN 201410116866A CN 103915123 B CN103915123 B CN 103915123B
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- storage
- air channel
- cooling
- control circuit
- cooling air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The present invention relates to reactor irradiated fuel store technology, and in particular to a kind of local strengthening cooling system of spent fuel dry-type storage.Its structure includes the storage sleeve for placing irradiated fuel assembly, cooling air channel is set below storage sleeve, cooling air channel is made up of storage housing supports plate, side plate and base plate, the bottom position for corresponding to each storage sleeve on storage housing supports plate is provided with air inlet, cooling air channel entrance is provided with side plate, the cooling air channel entrance is connected by ventilation duct with air blower；Each air inlet position for being located at storage sleeve bottom is provided with the air intake door gear controlled by logic control circuit in the cooling air channel, the temperature sensor that setting is connected with logic control circuit at the top of the storage sleeve.The present invention improves thermal technology security performance of the spentnuclear fuel in dry storage facility, increases safety allowance, improves the security and economy of nuclear power plant's operation.
Description
Technical field
The present invention relates to reactor irradiated fuel store technology, and in particular to a kind of local strengthening of spent fuel dry-type storage is cold
But system.
Background technology
After Fukushima accident, thermal technology's security performance of irradiated fuel store facility is more and more paid attention to.With spentnuclear fuel
The fast development of dry storage technology, is used widely in each nuclear power developed country, and shows and progressively substitute spentnuclear fuel
The trend of wet type banking system.By taking the spentnuclear fuel dry type intermediate storage technology of AECL research and development as an example, the MACSTOR coagulations of its design
Native reservoir module is by way of air Natural Circulation, to realize spentnuclear fuel Residual heat removal.Air is by reservoir module both sides bottom
The passage in portion enters, after being heated by component, then through the passage discharge of two side roof parts.
Because runner is narrow and storage capacity big, the fuel assembly in reservoir module can only rely on natural convection air cooling,
Heat-transfer capability is limited, and is limited by the ambient temperature effect around storage facilities, under some special operation conditions, fuel assembly bag
The risk that shell surface may overheat.
But, because the spentnuclear fuel heating power of dry storage is generally relatively low, it may occur however that the usual of overheat risk is only deposited
It is to flow not smooth or store recently（The Cooling at reactor shutdown time of component is shorter, and power is higher）Regional area, if can be in office
Portion takes reinforcing cooling provision, then either in terms of economy or security, the performance of dry storage facility can be carried
Height produces appreciable results.
The content of the invention
It is an object of the invention to provide a kind of local strengthening cooling system of spent fuel dry-type storage, so as to improve weary combustion
Material thermal technology's security performance in dry storage facility, increases safety allowance, and provide possibility to improve nuclear power station economy.
Technical scheme is as follows：A kind of local strengthening cooling system of spent fuel dry-type storage, including for putting
The storage sleeve of irradiated fuel assembly is put, cooling air channel is set below storage sleeve, cooling air channel is by storage housing supports plate, side
Plate and base plate are constituted, and the bottom position that each storage sleeve is corresponded on storage housing supports plate is provided with air inlet, in side plate
Cooling air channel entrance is provided with, the cooling air channel entrance is connected by ventilation duct with air blower；It is every in the cooling air channel
The individual air inlet position positioned at storage sleeve bottom is provided with the air intake door gear controlled by logic control circuit, in the storage set
Cylinder top sets the temperature sensor being connected with logic control circuit.
Further, the local strengthening cooling system of spent fuel dry-type storage as described above, wherein, described shutter dress
Put including shutter, and the electromagnetic relay and adjustable spring being connected with shutter respectively, electromagnetic relay and logic control
Circuit connection processed；The adjustable spring and electromagnetic relay can respectively drive air intake under electromagnetic relay on/off electricity condition
Door motion, air inlet is opened or closed.
Further, the local strengthening cooling system of spent fuel dry-type storage as described above, wherein, in each storage sleeve
Top sets the temperature sensor described in 4 altogether, when at least two temperature sensors detect gas flow temperature more than alarm temperature
When, the pressure cooling control signal of logic control circuit is triggered, the air intake door gear of corresponding storage lower cartridge is opened, by drum
Cooling is implemented in blower fan air-supply.
Further, the local strengthening cooling system of spent fuel dry-type storage as described above, wherein, described air blower with
Logic control circuit is connected.
Beneficial effects of the present invention are as follows：The present invention is by designing reinforcing means of the local convection with heat energy power, Ke Yiyou
Effect takes precautions against individual fuel overheating components so that thermal technology's security performance and safety allowance of fuel assembly obtain larger raising, and are
Shorten spentnuclear fuel wet type period of storage, expand dry type intermediate storage ability, improve the security and economy of nuclear power plant's operation, carry
Favourable guarantee is supplied.
Brief description of the drawings
Fig. 1 is the local strengthening cooling system structure schematic diagram of spent fuel dry-type storage；
Fig. 2 is the workflow diagram of the system.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
The structure of the local strengthening cooling system of spent fuel dry-type storage provided by the present invention is as shown in figure 1, including using
In place irradiated fuel assembly 2 storage sleeve 3, storage sleeve 3 below set cooling air channel 14, the side of cooling air channel 14 it is cold
But tunnel inlet 7 is connected by ventilation duct 5 with air blower 4.Each is located at storage sleeve bottom in the cooling air channel 14
The position of air inlet 15 is provided with the air intake door gear controlled by logic control circuit, is set and logic at the top of storage sleeve 3
The temperature sensor 1 of control circuit connection.
Cooling air channel 14 is the sky for relative closure formed by storage housing supports plate 11, side plate 12 and base plate 13
Between, the side side plate 12 of cooling air channel 14 is provided with aperture, i.e. cooling air channel entrance 7.Storage housing supports plate 11 is provided with some above
Aperture, i.e. air inlet 15.Air inlet top is the bottom opening of storage sleeve 3, and lower section is air intake door gear.
Air intake door gear includes shutter 9, and the electromagnetic relay 10 and flexible bullet being connected with shutter 9 respectively
Spring, electromagnetic relay 10 and adjustable spring are individually fixed in the downside of storage housing supports plate 11.Adjustable spring and electromagnetism relay
The co- controlling of device 10 motion of shutter 9.The side of 2 top of storage sleeve four is respectively disposed with a temperature sensor 1；Logic control
Circuit collects the information of temperature sensor 1, the shape of unlatching and electromagnetic relay 10 based on these information control air blower 4
State.
In accidental conditions, the monitoring signals of temperature sensor 1 will not trigger system acting, that is, air blower 4, enter
The grade part attonity of air door 9, electromagnetic relay 10 is in "on" position, and adjustable spring is in extended state 8A, and dry storage sets
Apply it is interior can rely on free convection mode cool down irradiated fuel assembly.
As shown in Fig. 2 raising when environment temperature, that partial air blocked inlet or respective location placed afterheat heat output is higher
Fuel assembly, the gas flow temperature that 4 temperature sensors 1 on some storage sleeve tops are detected can exceed alarm temperature, lead to
Logic circuit is crossed, 2 strategy is taken using 4, when at least two temperature sensors detect gas flow temperature more than alarm temperature, sentenced
Break and send accident mitigation trigger signal, signal spring system operation, air blower 4 is acted, blown toward cooling air channel 14, while
The signal also triggers the corresponding electromagnetic relay 10 of the storage sleeve and powers off, and adjustable spring is in contraction state 8B, in adjustable spring
Under effect, to side contractile motion, so, air blower 4 can be accurate by cooling air channel 14 via specified air inlet 15 for shutter 9
Really the efficient fuel assembly to overtemperature is blown, and irradiated fuel assembly temperature is effectively reduced by forced convection, prevents spentnuclear fuel
Component overtemperature is damaged.
Used as the modification of above-described embodiment, shutter 9 can also be in off-position, adjustable spring in electromagnetic relay 10
During in contraction state, air inlet 15 is closed；When the logic control circuit of system judges and send accident mitigation trigger signal
Afterwards, electromagnetic relay 10 is powered, and shutter is pulled into electromagnetic relay side, while opening air inlet 15, this mode is same
Technique effect of the invention can be realized.
Logic control circuit can be according to being designed the need for specific, and the signal for obtaining temperature sensor is simultaneously controlled respectively
Electromagnetic relay and air blower（Air blower can also individually be controlled）, this belongs to public for a person skilled in the art
Know technology.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification are belonged to the model of the claims in the present invention and its equivalent technology
Within enclosing, then the present invention is also intended to comprising these changes and modification.
Claims (3)
1. the local strengthening cooling system of a kind of spent fuel dry-type storage, including for placing the storage set of irradiated fuel assembly (2)
Cylinder (3), it is characterised in that：Cooling air channel (14) is set in storage sleeve (3) lower section, cooling air channel is by storage housing supports plate
(11), side plate (12) and base plate (13) are constituted, and the bottom of each storage sleeve (3) is corresponded in storage housing supports plate (11)
Position is provided with air inlet (15), and cooling air channel entrance (7) is provided with side plate (12), and the cooling air channel entrance (7) is by logical
Airduct (5) is connected with air blower (4)；Each is located at air inlet (15) position of storage sleeve bottom in the cooling air channel (14)
The air intake door gear controlled by logic control circuit is installed, is set and logic control circuit at storage sleeve (3) top
The temperature sensor (1) of connection；Described air intake door gear includes shutter (9), and is respectively connected with shutter (9)
Electromagnetic relay (10) and adjustable spring (8A, 8B), electromagnetic relay (10) are connected with logic control circuit；The adjustable spring
(8A, 8B) and electromagnetic relay (10) can respectively drive shutter (9) to move under electromagnetic relay on/off electricity condition, will
Air inlet (15) is opened or closed.
2. the local strengthening cooling system of spent fuel dry-type storage as claimed in claim 1, it is characterised in that：In each storage
Sleeve (3) top sets the temperature sensor (1) described in 4 altogether, when at least two temperature sensors (1) detect gas flow temperature
During more than alarm temperature, the pressure cooling control signal of logic control circuit is triggered, open the air intake of corresponding storage lower cartridge
Door gear, is blown by air blower (4) and implements cooling.
3. the local strengthening cooling system of spent fuel dry-type storage as claimed in claim 2, it is characterised in that：Described air blast
Machine (4) is connected with logic control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410116866.9A CN103915123B (en) | 2014-03-26 | 2014-03-26 | A kind of local strengthening cooling system of spent fuel dry-type storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410116866.9A CN103915123B (en) | 2014-03-26 | 2014-03-26 | A kind of local strengthening cooling system of spent fuel dry-type storage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103915123A CN103915123A (en) | 2014-07-09 |
| CN103915123B true CN103915123B (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410116866.9A Active CN103915123B (en) | 2014-03-26 | 2014-03-26 | A kind of local strengthening cooling system of spent fuel dry-type storage |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203882631U (en) * | 2014-03-26 | 2014-10-15 | 中国核电工程有限公司 | Partially-reinforced cooling system for dry type spent fuel storage |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081086A (en) * | 1974-02-06 | 1978-03-28 | Westinghouse Electric Corporation | Handling apparatus for a nuclear reactor fuel assembly |
| DE2929467C2 (en) * | 1979-07-20 | 1985-04-25 | Kraftwerk Union AG, 4330 Mülheim | Storage building for spent nuclear reactor fuel elements |
| US5078958A (en) * | 1990-04-04 | 1992-01-07 | University Of Nevada System | Underground cooling enhancement for nuclear waste repository |
| CN102097142A (en) * | 2009-12-11 | 2011-06-15 | 中国核电工程有限公司 | Nuclear reactor spent fuel dry type storage house |
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2014
- 2014-03-26 CN CN201410116866.9A patent/CN103915123B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203882631U (en) * | 2014-03-26 | 2014-10-15 | 中国核电工程有限公司 | Partially-reinforced cooling system for dry type spent fuel storage |
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| CN103915123A (en) | 2014-07-09 |
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