CN213545931U - Cooling and filtering system for spent fuel pool of pressurized water reactor nuclear power station - Google Patents
Cooling and filtering system for spent fuel pool of pressurized water reactor nuclear power station Download PDFInfo
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- CN213545931U CN213545931U CN202022493884.2U CN202022493884U CN213545931U CN 213545931 U CN213545931 U CN 213545931U CN 202022493884 U CN202022493884 U CN 202022493884U CN 213545931 U CN213545931 U CN 213545931U
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- spent fuel
- resin device
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- fuel pool
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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
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Abstract
The utility model provides a pressurized water reactor nuclear power station spent fuel pond cooling filtration system, including spent fuel pond, two parallel connection's cooling filtration series, first reloading cavity and second reloading cavity, the play water in spent fuel pond gets back to after one of them cooling filtration series spent fuel pond cyclic utilization, every cooling filtration series includes circulating water pump, heat exchanger, negative resin device, positive resin device in proper order along the outlet water pipeline, remove hydrogen peroxide solution resin device and filter, wherein, the outlet water end of negative resin device is connected with the inlet water end of positive resin device and the inlet water end that removes hydrogen peroxide solution resin device respectively, the outlet water end of positive resin device is connected with the inlet water end that removes hydrogen peroxide solution resin device through the valve, the outlet water end that removes hydrogen peroxide solution resin device is connected with the inlet water end of filter; the inlets of two parallel connected cooling filtration trains share a first refueling chamber and the outlets share a second refueling chamber.
Description
Technical Field
The utility model relates to a nuclear power field especially relates to a pressurized water reactor nuclear power station spent fuel pond cooling filtration system.
Background
The spent fuel subassembly among the nuclear power plant has certain decay heat in the spent fuel pond, needs spent fuel pond cooling system to cool off it, and the spent fuel pond can keep the pond temperature in controllable within range with the spent fuel decay heat exhaust system in the spent fuel pond, can purify the cooling water, can realize the high-efficient long-term operation of system. However, when the existing spent fuel water pool cooling and filtering system is in operation, the oxidation and decomposition of the cation resin bed leads to the increase of the content of sulfate radicals in the system, so that the corrosion risk of the system is increased, the high radioactivity in the spent fuel water pool can lead to the oxidation of water into hydrogen peroxide, the hydrogen peroxide can lead to the shortening of the service cycle of resin, and the defect that the cooling effect cannot be ensured when the system breaks down exists.
SUMMERY OF THE UTILITY MODEL
For solving at least one technical problem who exists among the above-mentioned prior art, the utility model provides a pressurized water reactor nuclear power station spent fuel pond cooling filtration system.
The technical problem of the utility model is solved through following technical scheme:
a spent fuel pool cooling and filtering system of a pressurized water reactor nuclear power station comprises a spent fuel pool, two cooling and filtering series connected in parallel, a first refueling cavity and a second refueling cavity, wherein the effluent of the spent fuel pool returns to the spent fuel pool for cyclic utilization after passing through one of the cooling and filtering series, each cooling and filtering series comprises a circulating water pump, a heat exchanger, a negative resin device, a positive resin device, a hydrogen peroxide removal resin device and a filter, wherein the effluent end of the spent fuel pool is connected with the water inlet end of the circulating water pump through a valve, the water inlet end of the heat exchanger is connected with the water outlet end of the circulating water pump, the water outlet end of the heat exchanger is connected with the water inlet end of the negative resin device through a valve, the water outlet end of the negative resin device is connected with the water inlet end of the positive resin device and the water inlet end of the hydrogen peroxide removal resin device through valves respectively, the water outlet end of the anode resin device is connected with the water inlet end of the hydrogen peroxide solution removing resin device through a valve, the water outlet end of the hydrogen peroxide solution removing resin device is connected with the water inlet end of the filter through a valve, and the water outlet end of the filter is connected with the water inlet end of the spent fuel water pool through a valve; the water inlet ends of the two circulating water pumps are also connected through a first pipeline, two first valves are arranged on the first pipeline, and the first material changing cavity is connected between the two first valves; the water outlet ends of the two filters are also connected through a second pipeline, two second valves are arranged on the second pipeline, and the second material changing chamber is connected between the two second valves.
Preferably, the water inlet end of the spent fuel pool is also connected with a fire water injection interface.
Preferably, the system further comprises an emergency water tower, wherein the water inlet end of the emergency water tower is connected with the desalted water, and the water outlet end of the emergency water tower is connected with the water inlet end of the spent fuel water pool.
Preferably, a bypass impurity filter is further arranged on a main pipeline between the water outlet end of the fuel water tank and the circulating water pump, the water inlet end of the impurity filter is connected to the main pipeline through a first branch pipe with a valve, and the water outlet end of the impurity filter is connected to the main pipeline through a second branch pipe with a valve.
Preferably, the heat exchanger exchanges heat through a demineralized water cycle.
Preferably, still include the waste liquid pond, the waste liquid pond with the waste liquid water exit linkage of spent fuel pond.
Preferably, the water inlet end of the spent fuel pool is also connected with the volume changing system through a refueling water tank.
Preferably, the impurity filter is a froth cleaning device for removing impurity dust absorbed by the spent fuel pool from the air.
The utility model discloses beneficial effect with the prior art contrast includes: the utility model discloses set up two parallelly connected cooling filtration series, when the operation, one uses one and is equipped with, in case the system breaks down can effectively guarantee the cooling effect, but change the positive resin device into the isolated operation in the system, can reduce the positive resin as required and participate in filterable time to the oxidative decomposition of positive resin when reducing the operation, the corrosion risk takes place for the lowering system, simultaneously, increased in the system and removed hydrogen peroxide solution resin device, reduced hydrogen peroxide solution's content in the spent fuel pond. Furthermore, an emergency water tower and a fire water injection interface are added in the system, so that the problem of cooling the spent fuel pool under the condition of accident power failure can be solved. Furthermore, an impurity filter such as a froth cleaning device is added in the system, so that impurity dust absorbed by the spent fuel pool from the air can be removed, and the system is prevented from being blocked.
Drawings
Fig. 1 is a block diagram of a spent fuel pool cooling and filtering system of a pressurized water reactor nuclear power station according to an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and preferred embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms of orientation such as left, right, up, down, top and bottom in the present embodiment are only relative concepts to each other or are referred to the normal use state of the product, and should not be considered as limiting.
As shown in fig. 1, a spent fuel pool cooling and filtering system for a pressurized water reactor nuclear power station comprises a spent fuel pool 1, two cooling and filtering series 2 connected in parallel, a first refueling cavity 3 and a second refueling cavity 4, wherein effluent of the spent fuel pool returns to the spent fuel pool for cyclic utilization after passing through one of the cooling and filtering series 2, the other cooling and filtering series is used as a standby, and the standby cooling and filtering series can be started when the cooling and filtering series in operation fails, so that the cooling effect is effectively ensured. Each cooling and filtering series 2 comprises a circulating water pump 21, a heat exchanger 22, a negative resin device 23, a positive resin device 24, a hydrogen peroxide removing resin device 25 and a filter 26, the water outlet end of the spent fuel water pool 1 is connected with the water inlet end of the circulating water pump 21 through a valve, the water inlet end of the heat exchanger 22 is connected with the water outlet end of the circulating water pump 21, the water outlet end of the heat exchanger 22 is connected with the water inlet end of the female resin device 23 through a valve, the water outlet end of the female resin device 23 is respectively connected with the water inlet end of the male resin device 24 and the water inlet end of the hydrogen peroxide removing resin device 25 through valves, the water outlet end of the male resin device 24 is connected with the water inlet end of the hydrogen peroxide removing resin device 25 through a valve, the water outlet end of the hydrogen peroxide removing resin device 25 is connected with the water inlet end of the filter 26 through a valve, and the water outlet end of the filter 26 is connected with the; the heat exchanger 22 exchanges heat through circulation of demineralized water, the water inlet ends of the two circulating water pumps 21 are also connected through a first pipeline 11, two first valves 12 are arranged on the first pipeline 11, and a first material changing chamber 3 is connected between the two first valves 12; the water outlet ends of the two filters 26 are also connected through a second pipeline 13, two second valves 14 are arranged on the second pipeline 13, and the second reloading chamber 4 is connected between the two second valves 14; the end of intaking in the spentnuclear fuel pond 1 still is connected with fire water injection interface 10, can let in the fire-fighting water for the spentnuclear fuel pond under the system accident outage condition, and the system still includes emergent water tower 6, and demineralized water is connected to the end of intaking of emergent water tower 6, and the end of intaking in spentnuclear fuel pond 1 is connected to the play water end of emergent water tower 6, through setting up emergent water tower 6, also can let in demineralized water for the spentnuclear fuel pond under the system accident outage condition. In addition, still be equipped with the impurity filter 5 of a bypass on the main line 17 between the play water end of fuel pond 1 and circulating water pump 21, the end of intaking of impurity filter 5 is connected on main line 17 through a first branch pipe 15 of taking the valve, the play water end of impurity filter 5 is connected on main line 17 through a second branch pipe 16 of taking the valve, preferably, the impurity filter is froth cleaning device for get rid of the impurity dust that spent fuel pond absorbed from the air, in operation, as required, can get rid of impurity dust with the play water in the spent fuel pond through this impurity filter after, reentrant cooling filtration series handles. In this system, still include waste liquid pond 9, waste liquid pond 9 and the waste liquid water exit linkage of spent fuel pond 1, the end of intaking in spent fuel pond 1 still is connected with change appearance system 8 through a reloading water tank 7.
During operation, water in the chemical volume system 8 is added into the spent fuel pool 1 through the refueling water tank 7, the spent fuel pool cools a spent fuel rod, the circulating water pump 21 pumps effluent water of the spent fuel pool into the heat exchanger for cooling, and the effluent water is returned to the spent fuel pool for recycling after passing through the filtering parts of the negative resin device 23, the positive resin device 24, the hydrogen peroxide solution removing resin device 25 and the filter 26, such as radioactive ions, corrosive impurities, scaling impurities, air dust and the like.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the technical field of the utility model belongs to the prerequisite of not deviating from the utility model discloses, can also make a plurality of equal substitution or obvious variants, performance or usage are the same moreover, all should regard as belonging to the utility model's scope of protection.
Claims (8)
1. The utility model provides a pressurized water reactor nuclear power station spent fuel pond cooling filtration system which characterized in that: the device comprises a spent fuel pool, two cooling filtering series connected in parallel, a first refueling cavity and a second refueling cavity, wherein effluent of the spent fuel pool returns to the spent fuel pool for recycling after passing through one of the cooling filtering series;
each cooling and filtering series comprises a circulating water pump, a heat exchanger, a negative resin device, a positive resin device, a hydrogen peroxide removing resin device and a filter, wherein the water outlet end of the spent fuel pool is connected with the water inlet end of the circulating water pump through a valve, the water inlet end of the heat exchanger is connected with the water outlet end of the circulating water pump, the water outlet end of the heat exchanger is connected with the water inlet end of the anion resin device through a valve, the water outlet end of the female resin device is respectively connected with the water inlet end of the male resin device and the water inlet end of the hydrogen peroxide solution removing resin device through a valve, the water outlet end of the anode resin device is connected with the water inlet end of the hydrogen peroxide solution removing resin device through a valve, the water outlet end of the hydrogen peroxide solution resin removing device is connected with the water inlet end of the filter through a valve, and the water outlet end of the filter is connected with the water inlet end of the spent fuel water pool through a valve;
the water inlet ends of the two circulating water pumps are also connected through a first pipeline, two first valves are arranged on the first pipeline, and the first material changing cavity is connected between the two first valves;
the water outlet ends of the two filters are also connected through a second pipeline, two second valves are arranged on the second pipeline, and the second material changing chamber is connected between the two second valves.
2. The spent fuel pool cooling and filtering system of the pressurized water reactor nuclear power plant as claimed in claim 1, wherein: the water inlet end of the spent fuel pool is also connected with a fire water injection interface.
3. The spent fuel pool cooling and filtering system of the pressurized water reactor nuclear power plant as claimed in claim 1, wherein: still include emergent water tower, the demineralized water is connected to the end of intaking of emergent water tower, the play water end of emergent water tower is connected the end of intaking in spent fuel pond.
4. The spent fuel pool cooling and filtering system of the pressurized water reactor nuclear power plant as claimed in claim 1, wherein: the water circulation system is characterized in that a bypass impurity filter is further arranged on a main pipeline between the water outlet end of the fuel water tank and the water circulation pump, the water inlet end of the impurity filter is connected to the main pipeline through a first branch pipe with a valve, and the water outlet end of the impurity filter is connected to the main pipeline through a second branch pipe with a valve.
5. The spent fuel pool cooling and filtering system of the pressurized water reactor nuclear power plant as claimed in claim 1, wherein: the heat exchanger circularly exchanges heat through desalted water.
6. The spent fuel pool cooling and filtering system of the pressurized water reactor nuclear power plant as claimed in claim 1, wherein: still include the waste liquid pond, the waste liquid pond with the waste liquid water exit linkage in spent fuel pond.
7. The spent fuel pool cooling and filtering system of the pressurized water reactor nuclear power plant as claimed in claim 1, wherein: the water inlet end of the spent fuel pool is also connected with the volume changing system through a refueling water tank.
8. The spent fuel pool cooling and filtering system of the pressurized water reactor nuclear power plant as claimed in claim 4, wherein: the impurity filter is a froth cleaning device and is used for removing impurity dust absorbed by the spent fuel pool from the air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022493884.2U CN213545931U (en) | 2020-11-02 | 2020-11-02 | Cooling and filtering system for spent fuel pool of pressurized water reactor nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022493884.2U CN213545931U (en) | 2020-11-02 | 2020-11-02 | Cooling and filtering system for spent fuel pool of pressurized water reactor nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213545931U true CN213545931U (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022493884.2U Active CN213545931U (en) | 2020-11-02 | 2020-11-02 | Cooling and filtering system for spent fuel pool of pressurized water reactor nuclear power station |
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| Country | Link |
|---|---|
| CN (1) | CN213545931U (en) |
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2020
- 2020-11-02 CN CN202022493884.2U patent/CN213545931U/en active Active
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