CN108847293A - One kind can spray separate heat pipe condensation segment spentnuclear fuel pond cooling system - Google Patents
One kind can spray separate heat pipe condensation segment spentnuclear fuel pond cooling system Download PDFInfo
- Publication number
- CN108847293A CN108847293A CN201810811885.1A CN201810811885A CN108847293A CN 108847293 A CN108847293 A CN 108847293A CN 201810811885 A CN201810811885 A CN 201810811885A CN 108847293 A CN108847293 A CN 108847293A
- Authority
- CN
- China
- Prior art keywords
- heat
- valve
- spray
- tube
- exchanging pipe
- 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.)
- Pending
Links
- 239000007921 spray Substances 0.000 title claims abstract description 58
- 238000001816 cooling Methods 0.000 title claims abstract description 38
- 239000002915 spent fuel radioactive waste Substances 0.000 title claims abstract description 38
- 238000009833 condensation Methods 0.000 title claims abstract description 28
- 230000005494 condensation Effects 0.000 title claims abstract description 28
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000002386 leaching Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/24—Promoting flow of the coolant
- G21C15/257—Promoting flow of the coolant using heat-pipes
-
- 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
Abstract
The present invention, which provides one kind, can spray separate heat pipe condensation segment spentnuclear fuel pond cooling system, including：Separating heat-tube heat-exchanger, separating heat-tube heat-exchanger include condensing heat-exchanging pipe, evaporating heat-exchanging pipe and connecting tube, wherein, evaporating heat-exchanging pipe is arranged in Spent Fuel Pool, and condensing heat-exchanging pipe setting is connected outside Spent Fuel Pool, and through connecting tube with evaporating heat-exchanging pipe；Spray tube, spray tube to condensing heat-exchanging pipe for being sprayed；First valve, the first valve are connected with spray tube；Second valve, one end of the second valve are connected with pond is collected, and the other end of the second valve is connected with the front end of the first valve；And third valve, one end of third valve are connected with the rear end of the first valve, the other end of third valve is first connected with spray pump, then is connected with pond is collected.Pass through this system, it is ensured that it can carry out passive cooling operation for a long time, also can be in the cooling capacity for carrying out significantly improving cooling system when spray tube starting.
Description
Technical field
The present invention relates to one kind can spray separate heat pipe condensation segment spentnuclear fuel pond cooling system.
Background technique
CAP1400, CAP1700 large size advanced pressurized water reactor core of AP1000 nuclear power station and subsequent independent research that China introduces
Power station belongs to third-generation nuclear power technology, uses a large amount of advanced non-passive safety technologies, can guarantee after major accident 72 hours
Human intervention is not needed inside.But only do not needed within 72 hours after major accident human intervention be it is inadequate, need to consider spentnuclear fuel water
The long-term passive cooling of pond and containment.
After Spent Fuel Pool accident for a long time cool down when heat source temperature generally at 50~90 DEG C, and air themperature generally-
40~50 DEG C, but need cooling heat very big, reach ten megawatts or so, this is the one small big heat output problem of the temperature difference.
For this problem, heat exchange of heat pipe is a feasible selection.But since ultimate heat sink is atmosphere, if using empty
Cold tower is cooled down, and the condensation end convection transfer rate that heat exchange of heat pipe radiates to air is not high, then is needed using fin reinforcing
Heat exchange.
Further, since the compactedness of AP1000 and subsequent CAP1400, CAP1700 Nuclear Power Station Factory Building and equipment arrangement, uses
Separate type heat pipe exchanger will be more suitable.Separating heat-tube heat-exchanger is at cooling spentnuclear fuel pond, the evaporation of separate heat pipe
Section is arranged in spentnuclear fuel pond, and the evaporator section of separate heat pipe is arranged in atmospheric environment, and evaporator section and condensation segment pass through connection
Pipe connection.
The advantages of system is can to use passive flowing mode longtime running.But influenced by volume cost etc., it dissipates
Thermal energy power is limited, main heat sink thermal resistance convective heat transfer resistance of water opposite heat tube evaporator section and air-cooled in Spent Fuel Pool
Side air and heat pipe condenser section convective heat transfer resistance.The heat exchanged thermoresistance of the latter is reduced in operation, heat pipe heat exchanging can be effectively improved
The exchange capability of heat of device can not need to improve pond temperature under the certain high load capacity operating condition in part yet, and being just able to satisfy heat dissipation needs
It asks.
Therefore, how to provide one kind ensures that it can carry out passive cooling operation for a long time, more air-cooled than dry air can also change
There is heat the spentnuclear fuel pond cooling system of higher exchange capability of heat to become urgent problem to be solved.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes one kind can spray separate heat pipe condensation segment spentnuclear fuel pond cooling system
System, the system comprises：
Separating heat-tube heat-exchanger, the separating heat-tube heat-exchanger include condensing heat-exchanging pipe, evaporating heat-exchanging pipe and company
Adapter tube, wherein the evaporating heat-exchanging pipe is arranged in Spent Fuel Pool, and the condensing heat-exchanging pipe is arranged in the Spent Fuel Pool
Outside, and by the connecting tube with the evaporating heat-exchanging pipe it is connected；
Spray tube, the spray tube to the condensing heat-exchanging pipe for being sprayed；
First valve, first valve are connected with the spray tube；
Second valve, one end of second valve are connected with pond is collected, the other end of second valve and institute
The front end for stating the first valve is connected；And
Third valve, one end of the third valve are connected with the rear end of first valve, the third valve
The other end is first connected with spray pump, then is connected with the collection pond.
Preferably, when first valve, the second valve and third valve are closed, the spray air pump inoperative is described
Separating heat-tube heat-exchanger dissipates the heat in the spentnuclear fuel pond in air under passive state.
Preferably, when the third valve and the spray pump are opened, the spray tube works, to the condensing heat-exchanging pipe
It is sprayed.
Preferably, when pressure of supply water is sufficiently high, the third valve and second valve are closed, opens first valve
Door, the spray tube execute spray operation.
Preferably, when the water level for collecting pond is relatively low, second valve can be opened and carry out water-refilling operation.
Compared with prior art, the invention has the advantages that：
1, provided by the invention to spray separate heat pipe condensation segment spentnuclear fuel pond cooling system, opposite heat tube heat exchanger assembly
The air-cooling section of air-cooled condensation section carries out spray operation, and the convective heat transfer resistance of air-cooled side can be greatly reduced, to promote separation
The exchange capability of heat of type heat pipe heat exchanging device assembly.
2, provided by the invention to spray separate heat pipe condensation segment spentnuclear fuel pond cooling system, when spray equipment works
When, the heat transfer outside a tube of heat exchange of heat pipe condensation segment is that have the air cooling convection current of spray to exchange heat, and heat exchange more air-cooled than dry air is had more
High exchange capability of heat.
3, provided by the invention to spray separate heat pipe condensation segment spentnuclear fuel pond cooling system, it is ensured that it can be carried out for a long time
Passive cooling operation, also can be in the cooling capacity for carrying out improving cooling system when spray equipment starting to a certain extent.
Detailed description of the invention
Fig. 1 is the schematic diagram provided by the invention for spraying separate heat pipe condensation segment spentnuclear fuel pond cooling system.
1- condensing heat-exchanging pipe；
2- evaporating heat-exchanging pipe；
3- connecting tube；
4- collects pond；
5- spray tube；
6- third valve；
The first valve of 7-；
The second valve of 8-；
9- spray pump；
10- Spent Fuel Pool.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
As shown in Figure 1, the present invention provides one kind can spray separate heat pipe condensation segment spentnuclear fuel pond cooling system, it is special
Sign is, the system comprises：Separating heat-tube heat-exchanger, the separating heat-tube heat-exchanger include condensing heat-exchanging pipe 1, evaporation
Heat exchanger tube 2 and connecting tube 3, wherein the evaporating heat-exchanging pipe 2 is arranged in Spent Fuel Pool 10, and the condensing heat-exchanging pipe 1 is set
It sets outside the Spent Fuel Pool 10, and is connected by the connecting tube 3 with the evaporating heat-exchanging pipe 2；Spray tube 9, is used for
It is sprayed to the condensing heat-exchanging pipe 1；First valve 7, first valve 7 are connected with the spray tube 9；Second valve
8, one end of second valve 8 is connected with pond 4 is collected, the other end of second valve 4 and first valve 7
Front end is connected；And third valve 6, one end of the third valve 6 is connected with the rear end of first valve 7, described
The other end of third valve 6 is first connected with spray pump 9, then is connected with the collection pond 4.
Preferably, when first valve 7, the second valve 8 and third valve 6 are closed, the spray pump 9 does not work,
The separating heat-tube heat-exchanger dissipates the heat in the spentnuclear fuel pond in air under passive state, wherein condensation is changed
Heat pipe 1 is dissipated heat in surrounding air by the heat transfer free convection of condensing heat-exchanging pipe and air in air side.
Preferably, when the third valve 6 and the spray pump 9 are opened, the spray tube 9 works, and changes to the condensation
Heat pipe 1 is sprayed.The heat convection ability of air-cooled side is substantially strengthened, the separate heat pipe heat exchange under this operating mode
The exchange capability of heat of device assembly air-cooled will be obviously improved than pure.
Preferably, when pressure of supply water is sufficiently high, also can use the pressure of water supply pipe carries out spray operation, that is, closes
The third valve 6 and second valve 8, open first valve 7, and the spray tube 9 executes spray operation.
Preferably, when the water level for collecting pond 4 is relatively low, second valve 8 can be opened and carry out moisturizing behaviour
Make.
Compared with prior art, the invention has the advantages that：
1, provided by the invention to spray separate heat pipe condensation segment spentnuclear fuel pond cooling system, opposite heat tube heat exchanger assembly
The air-cooling section of air-cooled condensation section carries out spray operation, and the convective heat transfer resistance of air-cooled side can be greatly reduced, to promote separation
The exchange capability of heat of type heat pipe heat exchanging device assembly.
2, provided by the invention to spray separate heat pipe condensation segment spentnuclear fuel pond cooling system, when spray equipment works
When, the heat transfer outside a tube of heat exchange of heat pipe condensation segment is that have the air cooling convection current of spray to exchange heat, and heat exchange more air-cooled than dry air is had more
High exchange capability of heat.
3, provided by the invention to spray separate heat pipe condensation segment spentnuclear fuel pond cooling system, it is ensured that it can be carried out for a long time
Passive cooling operation, also can be in the cooling capacity for carrying out improving cooling system when spray equipment starting to a certain extent.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, due to corresponding to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part illustration
?.
Further, table 1 is shown in kind of different structure, uses the exchange capability of heat of air-cooled heat pipe heat exchanging component merely
With the heat pipe heat exchanging component exchange capability of heat comparable situation sprayed with air side.
For example, being 7.6m long 200,5m long 200, condenser pipe 1141 in evaporation heat pipe quantity.Connect bore
80mm, evaporator section 12.6m, ascent stage 9m, horizontal segment 50m, condenser pipe horizontal space 300mm, fin height 30mm, condensation segment 1
When free convection is cooling in dry air environment, the thermic load that can take away spentnuclear fuel pond is 9.53MW；After spray equipment starting,
Same separating heat-tube heat-exchanger, the outer convection coefficient of condensation segment heat exchanger tube can be improved original 4 times or so, can balance
The spentnuclear fuel pond thermic load of about 11.15MW, i.e., by spray equipment, the exchange capability of heat of cooling system improves about 17%.
Air side spray exchange capability of heat compares under the identical heat pipe geometrical arrangements of table 1 and service condition
Those skilled in the art can use different methods to achieve the described function each specific application, but
It is that such implementation should not be considered as beyond the scope of the present invention.
Obviously, those skilled in the art can carry out various modification and variations without departing from spirit of the invention to invention
And range.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its equivalent technologies range it
Interior, then the invention is also intended to include including these modification and variations.
Claims (5)
1. one kind can spray separate heat pipe condensation segment spentnuclear fuel pond cooling system, which is characterized in that the system comprises：
Separating heat-tube heat-exchanger, the separating heat-tube heat-exchanger include condensing heat-exchanging pipe, evaporating heat-exchanging pipe and connecting tube,
Wherein, the evaporating heat-exchanging pipe is arranged in Spent Fuel Pool, and the condensing heat-exchanging pipe is arranged outside the Spent Fuel Pool, and
It is connected by the connecting tube with the evaporating heat-exchanging pipe；
Spray tube, the spray tube to the condensing heat-exchanging pipe for being sprayed；
First valve, first valve are connected with the spray tube；
Second valve, one end of second valve are connected with pond is collected, the other end of second valve and described the
The front end of one valve is connected；And
Third valve, one end of the third valve are connected with the rear end of first valve, the third valve it is another
End is first connected with spray pump, then is connected with the collection pond.
2. separate heat pipe condensation segment spentnuclear fuel pond cooling system can be sprayed as described in claim 1, which is characterized in that work as institute
It states the first valve, the second valve and third valve to close, the spray air pump inoperative, the separating heat-tube heat-exchanger is non-
The heat in the spentnuclear fuel pond is dissipated in air under active state.
3. separate heat pipe condensation segment spentnuclear fuel pond cooling system can be sprayed as described in claim 1, which is characterized in that work as institute
It states third valve and the spray pump is opened, the spray tube work is sprayed to the condensing heat-exchanging pipe.
4. separate heat pipe condensation segment spentnuclear fuel pond cooling system can be sprayed as described in claim 1, which is characterized in that work as confession
Water pressure is sufficiently high, closes the third valve and second valve, opens first valve, and the spray tube executes spray
Leaching operation.
5. separate heat pipe condensation segment spentnuclear fuel pond cooling system can be sprayed as described in claim 1, which is characterized in that work as institute
State collect pond water level it is relatively low when, second valve can be opened and carry out water-refilling operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810811885.1A CN108847293A (en) | 2018-07-23 | 2018-07-23 | One kind can spray separate heat pipe condensation segment spentnuclear fuel pond cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810811885.1A CN108847293A (en) | 2018-07-23 | 2018-07-23 | One kind can spray separate heat pipe condensation segment spentnuclear fuel pond cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108847293A true CN108847293A (en) | 2018-11-20 |
Family
ID=64196760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810811885.1A Pending CN108847293A (en) | 2018-07-23 | 2018-07-23 | One kind can spray separate heat pipe condensation segment spentnuclear fuel pond cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108847293A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110957055A (en) * | 2019-10-09 | 2020-04-03 | 中国核电工程有限公司 | Separated flexible heat pipe cooling system suitable for pressurized water reactor nuclear power station |
| WO2022012857A1 (en) * | 2020-07-13 | 2022-01-20 | Mahle International Gmbh | Cooling system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04305191A (en) * | 1991-04-01 | 1992-10-28 | Mitsubishi Heavy Ind Ltd | Cooling equipment of container |
| CN104134474A (en) * | 2014-07-30 | 2014-11-05 | 中科华核电技术研究院有限公司 | Passive cooling system |
| CN104575633A (en) * | 2013-10-12 | 2015-04-29 | 中科华核电技术研究院有限公司 | Passive water replenishment and heat export system for spent fuel pool |
| WO2017004987A1 (en) * | 2015-07-09 | 2017-01-12 | 东南大学 | All condition operation pre-condensation heat tower device |
-
2018
- 2018-07-23 CN CN201810811885.1A patent/CN108847293A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04305191A (en) * | 1991-04-01 | 1992-10-28 | Mitsubishi Heavy Ind Ltd | Cooling equipment of container |
| CN104575633A (en) * | 2013-10-12 | 2015-04-29 | 中科华核电技术研究院有限公司 | Passive water replenishment and heat export system for spent fuel pool |
| CN104134474A (en) * | 2014-07-30 | 2014-11-05 | 中科华核电技术研究院有限公司 | Passive cooling system |
| WO2017004987A1 (en) * | 2015-07-09 | 2017-01-12 | 东南大学 | All condition operation pre-condensation heat tower device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110957055A (en) * | 2019-10-09 | 2020-04-03 | 中国核电工程有限公司 | Separated flexible heat pipe cooling system suitable for pressurized water reactor nuclear power station |
| CN110957055B (en) * | 2019-10-09 | 2022-11-25 | 中国核电工程有限公司 | Separated flexible heat pipe cooling system suitable for pressurized water reactor nuclear power station |
| WO2022012857A1 (en) * | 2020-07-13 | 2022-01-20 | Mahle International Gmbh | Cooling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181120 |