CN219743767U - Fire-fighting water supply system for factory building of nuclear power station - Google Patents
Fire-fighting water supply system for factory building of nuclear power station Download PDFInfo
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- CN219743767U CN219743767U CN202320910816.2U CN202320910816U CN219743767U CN 219743767 U CN219743767 U CN 219743767U CN 202320910816 U CN202320910816 U CN 202320910816U CN 219743767 U CN219743767 U CN 219743767U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 166
- 238000003860 storage Methods 0.000 claims abstract description 81
- 239000007788 liquid Substances 0.000 claims abstract description 75
- 239000001301 oxygen Substances 0.000 claims abstract description 46
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 46
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 41
- 230000007797 corrosion Effects 0.000 claims abstract description 32
- 238000005260 corrosion Methods 0.000 claims abstract description 32
- 238000012544 monitoring process Methods 0.000 claims abstract description 28
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 19
- 230000001954 sterilising effect Effects 0.000 claims description 15
- 238000006392 deoxygenation reaction Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004659 sterilization and disinfection Methods 0.000 description 11
- 239000003112 inhibitor Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 239000010962 carbon steel Substances 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The utility model discloses a fire-fighting water supply system of a factory building of a nuclear power station, which comprises a water source supply module, a liquid storage tank, an oxygen removal module, a water quality monitoring module, a control module, a nitrogen source and a bypass pipeline, wherein the water quality monitoring module is arranged at the top of the liquid storage tank, the nitrogen source is connected with the liquid storage tank through an air inlet pipeline, and the water source supply module, the oxygen removal module and the liquid storage tank are sequentially connected through a first pipeline to form a main pipeline; the liquid storage tank is also connected with a second pipeline, one end of the bypass pipeline is positioned between the water source supply module and the deoxidization module, and the other end of the bypass pipeline is connected with the second pipeline; the first pipeline, the deoxidizing module, the liquid storage tank, the second pipeline and the bypass pipeline form a circulation loop. According to the fire-fighting water supply system of the plant of the nuclear power station, the oxygen concentration of the water supply system is reduced, so that the corrosion of the fire-fighting water supply system is reduced, the maintenance frequency of a network of the fire-fighting water supply system of the nuclear power station is further reduced, and the safety and reliability of the fire-fighting water system of the nuclear power station are improved.
Description
Technical Field
The utility model belongs to the technical field of fire control, and particularly relates to a fire water supply system for a factory building of a nuclear power station.
Background
The fire-fighting water system of the nuclear power unit uses a large number of carbon steel pipelines, and the designed service life of the carbon steel pipe is about 15-20 years, which is far lower than the designed service life of the nuclear power station by 60 years. The fire water of the nuclear power station must be in an effective standby state for a long time, so that uncontrollable fire in a factory is avoided; and maintenance of fire water in nuclear power plants is more complicated and difficult. As the running time of the unit increases, the problem of corrosion leakage of the pipeline of the fire water system is gradually serious, the pipeline corrosion leads to the reduction of the wall thickness of the pipeline, and then the shock resistance of the nuclear facility is reduced, and huge risks are caused to the nuclear power unit. Therefore, the corrosion prevention of the fire water supply system of the nuclear power plant is of great importance. The main area with serious corrosion is in a water supply system, and mainly because a large amount of high-oxygen water enters the system, carbon steel materials are subjected to oxygen corrosion, so that pipelines are corroded and valves are blocked.
At present, corrosion inhibitors can be added to a closed cooling water system to control corrosion of materials such as carbon steel, copper, stainless steel and the like, and the fire-fighting water system is different from the closed cooling water system in main function, if the corrosion inhibitors are added into the fire-fighting water system, a large amount of toxic and harmful gases can be generated in the fire-fighting process by the corrosion inhibitors in the water solution to cause personal injury, and discharged corrosive liquids or harmful substances enter underground water to cause environmental pollution.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the utility model aims to provide an improved fire-fighting water supply system of a nuclear power plant, which does not need to use corrosion inhibitors, reduces the oxygen concentration of the water supply system, thereby reducing the corrosion of the water supply system, reducing the maintenance frequency of a fire-fighting water system pipe network of the nuclear power plant and improving the safety performance of the fire-fighting water system of the nuclear power plant.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a nuclear power station factory building fire control water supply system, includes water source supply module, liquid storage pot, deoxidization module, water quality monitoring module, control module, nitrogen gas source and bypass pipeline, water quality monitoring module sets up the top of liquid storage pot, the nitrogen gas source through the admission line with the liquid storage pot is connected, connect gradually through first pipeline between water source supply module, deoxidization module and the liquid storage pot and form the main line; the liquid storage tank is also connected with a second pipeline, one end of the bypass pipeline is positioned between the water source supply module and the deoxidization module, and the other end of the bypass pipeline is connected with the second pipeline; the first pipeline, the deoxidization module, the liquid storage tank, the second pipeline and the bypass pipeline form a circulation loop. The water source of the water source supply module can be tap water, factory water and the like.
According to some preferred embodiments of the present utility model, the oxygen removal module comprises, in order, a filter, an oxygen removal membrane unit, and a sterilization unit, the sterilization unit being adjacent to the reservoir; the deoxidizing module is used for enabling the oxygen content of water entering the liquid storage tank to be 10-50 mu g.L -1 . The filter is used for removing suspended matter impurities in water so as to prolong the service life of the deoxidizing module. The deoxidization membrane unit adopts a membrane method deoxidization process, and the oxygen content of water deoxidized by the deoxidization module reaches 10-50 mug.L -1 Then enters the liquid storage tank; and 2000m of the treatment is completed in 15-20h 3 The water yield can also be increased or decreased according to the consumption of fire water. In some embodiments of the present utility model, the sterilization unit may use ultraviolet sterilization or hypochlorous acid sterilization.
According to some preferred embodiments of the utility model, the first valve is disposed at the inlet of the first conduit, the second valve is disposed adjacent to the filter, the third valve is disposed adjacent to the filter, the fourth valve is disposed adjacent to the filter, and the fifth valve is disposed adjacent to the filter.
According to some preferred embodiments of the utility model, the third valve and the fourth valve are both disposed on the second conduit, the third valve is adjacent to the reservoir, and the fifth valve is disposed on the bypass conduit.
According to some preferred embodiments of the utility model, one end of the bypass pipe is connected to the first pipe to form a first connection point, and the other end of the bypass pipe is connected to the second pipe to form a second connection point.
According to some preferred embodiments of the utility model, the first connection point is located between the first valve and the second valve, and the second connection point is located between the third valve and the fourth valve.
According to some preferred embodiments of the utility model, a circulation pump is further provided on the second pipe, the circulation pump being located between the reservoir and the third valve.
According to some preferred embodiments of the present utility model, the water storage state, the emergency state and the reoxygenation state are includedWhen the fire water supply system of the plant is in the water storage state, the first valve and the second valve are in an open state, and the third valve, the fourth valve and the fifth valve are all in a closed state; when the fire water supply system of the plant is in the emergency state, the second valve and the third valve are in the closed state, and the first valve, the fourth valve and the fifth valve are in the open state; when the fire water supply system of the plant is in the reoxygenation state, the first valve and the fourth valve are in the closed state, the second valve, the third valve and the fifth valve are in the open state, and part of the first pipeline, the deoxygenation module, the liquid storage tank, part of the second pipeline and the bypass pipeline form the circulation loop. When the fire water supply system is in a normal water storage state, a large amount of fire water is not needed for fire extinguishment at the moment, namely, when the total water consumption of the fire water supply system is not more than the water production capacity of the deoxidizing module, the first valve and the second valve are in an open state, the third valve, the fourth valve and the fifth valve are all in a closed state, a water source enters the liquid storage tank from the water source supply module through the first valve, the second valve, the first pipeline and the deoxidizing module to form a main pipeline, and at the moment, the oxygen concentration measuring unit and the corrosion monitoring unit continuously monitor the oxygen concentration and the corrosion parameters in the liquid storage tank. When the fire water supply system of the factory building of the nuclear power station is in an emergency state, a large amount of fire water is needed to extinguish the fire at the moment, namely, when the total water consumption of the fire water supply system is larger than the water production capacity of the deoxidizing module, the second valve and the third valve are in the closed state, the first valve, the fourth valve and the fifth valve are in the open state and are used for enabling a water source to enter the fire pipe network from the water source supply module through part of the first pipeline, the first valve, the fifth valve, the bypass pipeline, part of the second pipeline and the fourth valve to extinguish the fire, and a large amount of water at the moment does not need to be deoxidized through the deoxidizing module, and the water quality monitoring module is not in the working state. When the fire is extinguished, the required water consumption is reduced, the control module controls the fire water supply system to return to the water storage state, and the water quality monitoring device is started. When the oxygen concentration measuring unit in the water quality monitoring module detects the oxygen content of the water in the liquid storage tankGreater than 50 mug.L -1 When the system is in a reoxygenation state, the control module can control the fire-fighting water supply system of the plant of the nuclear power station to be in a reoxygenation state, the first valve and the fourth valve are in a closed state, and the second valve, the third valve and the fifth valve are all in an open state, so that part of the first pipeline, the deoxygenation module, the liquid storage tank, part of the second pipeline and the bypass pipeline form a circulating loop, the circulating pump can reflux water in the liquid storage tank into the deoxygenation module, namely, the water in the liquid storage tank enters the deoxygenation module through the circulating pump, the third valve, part of the second pipeline, the bypass pipeline, the fifth valve, the second valve and part of the first pipeline, and flows into the liquid storage tank for storage after reoxygenation.
According to some preferred embodiments of the utility model, the water quality monitoring module comprises an oxygen concentration measuring unit and a corrosion monitoring unit. The oxygen concentration measuring unit and the corrosion monitoring unit are respectively used for monitoring the oxygen concentration in the liquid storage tank and the corrosion state of the pipeline, and the corrosion monitoring unit is used for collecting oxidation-reduction potential and current data of the material and transmitting the data to the control module. The control module controls the operation parameters of the fire water supply system according to the received data, and ensures that the oxygen content of water in the whole fire water supply system is lower (10-50 mug.L) -1 )。
According to some preferred embodiments of the present utility model, an air inlet and an air outlet are arranged at the top of the liquid storage tank, one end of the air inlet pipeline is connected with the nitrogen source, and the other end of the air inlet pipeline is connected with the air inlet; the exhaust port is used for exhausting redundant nitrogen in the liquid storage tank. In some embodiments of the utility model, the liquid storage tank is cylindrical, has sealing capability, and a nitrogen source arranged at the top is used for introducing nitrogen into the liquid storage tank through the air inlet pipeline and the air inlet to form nitrogen coverage for stabilizing pressure, so that oxygen in the external environment is prevented from entering; the setting of gas vent can be with too much nitrogen gas discharge in the liquid storage pot, avoids internal pressure too high. In addition, the side of the liquid storage tank is also provided with a liquid level meter for displaying the liquid level of fire fighting water in the liquid storage tank in real time.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following advantages: according to the fire-fighting water supply system of the plant of the nuclear power station, a corrosion-resistant material with higher cost is not needed, and a corrosion inhibitor is not needed to be added, so that the oxygen content of the water supply system is reduced, the corrosion of the fire-fighting water supply system is reduced, the maintenance frequency of a network of the fire-fighting water supply system of the nuclear power station is further reduced, and the safety and reliability of the fire-fighting water system of the nuclear power station are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a fire water supply system according to a preferred embodiment of the present utility model;
FIG. 2 is a schematic perspective view of a liquid storage tank according to a preferred embodiment of the present utility model;
wherein, the reference numerals are as follows: the device comprises a water source supply module-1, a liquid storage tank-2, an air inlet-21, an air outlet-22, a liquid level meter-23, an oxygen removal module-3, a filter-31, an oxygen removal membrane unit-32, a sterilization unit-33, an oxygen concentration measurement unit-41, a corrosion monitoring unit-42, a nitrogen source-5, an air inlet pipeline-51, a bypass pipeline-6, a first pipeline-7, a second pipeline-8, a first valve-91, a second valve-92, a third valve-93, a fourth valve-94, a fifth valve-95 and a circulating pump-96.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
As shown in fig. 1 and 2, the fire-fighting water supply system for a plant of a nuclear power plant of the present embodiment includes a water source supply module 1, a liquid storage tank 2, an oxygen removal module 3, a water quality monitoring module, a control module (not shown), a nitrogen source 5 and a bypass pipeline 6. The water source supply module 1, the deoxidizing module 3 and the liquid storage tank 2 are sequentially connected through a first pipeline 7 to form a main pipeline; the liquid storage tank 2 is also connected with a second pipeline 8, the nitrogen source 5 is connected with the liquid storage tank 2 through an air inlet pipeline 51, and the water quality monitoring module is arranged at the top of the liquid storage tank 2; the control module is used for controlling the operation parameters of the fire water supply system and the operation state of the fire water supply system. The water source of the water source supply module 1 of the present embodiment may be tap water, factory water, or the like.
Further, referring to fig. 1, the deoxidizing module 3 includes a filter 31, a deoxidizing film unit 32, and a sterilizing unit 33 in this order, the filter 31 being adjacent to the water source supply module 1, and the sterilizing unit 33 being adjacent to the liquid storage tank 2. A first valve 91 is provided at the inlet of the first conduit 7, a second valve 92 is provided between the first valve 91 and the filter 31; a third valve 93 and a fourth valve 94 are arranged on the second pipeline 8, wherein the third valve 93 is close to the liquid storage tank 2; the second pipe 8 is also provided with a circulating pump 96, and the circulating pump 96 is positioned between the liquid storage tank 2 and the third valve 93. Specifically, the filter 31 is used to remove suspended matter impurities from the water source supply module 1 to extend the service life of the oxygen removal module 3. The oxygen removal membrane unit 32 removes oxygen in water by adopting a membrane method oxygen removal process, and the oxygen content of the water subjected to oxygen removal by the oxygen removal module 3 reaches 10-50 mug.L -1 The deoxidized water enters a liquid storage tank 2; the deoxidization module 3 can treat 2000m in 15-20h 3 The water yield can also be increased or decreased according to the consumption of fire water. The sterilization unit 33 in this embodiment can use ultraviolet sterilization or hypochlorous acid sterilization, and because some microorganisms in the aqueous medium can grow and reproduce under the condition of low oxygen concentration, the sterilization unit 33 is used for sterilization, so as to control the growth and reproduction of the microorganisms, and further to prevent the corrosion of the microorganisms to the pipeline.
Further, referring to fig. 1, a fifth valve 95 is provided on the bypass pipe 6, one end of the bypass pipe 6 is located between the water source supply module 1 and the oxygen removal module 3 and is connected with the first pipe 7 to form a first connection point, the other end of the bypass pipe 6 is connected with the second pipe 8 to form a second connection point, and the first connection point is located between the first valve 91 and the second valve 92, and the second connection point is located between the third valve 93 and the fourth valve 94.
Further, referring to fig. 2, the liquid storage tank 2 of the present embodiment is cylindrical, and has a good sealing capability, the top of the liquid storage tank 2 is provided with an air inlet 21 and an air outlet 22, one end of the air inlet pipe 51 is connected to the air inlet 21, and the other end is connected to the nitrogen source 5. The nitrogen source 5 is used for introducing nitrogen into the liquid storage tank 2 through the air inlet pipeline 51 and the air inlet 21 to form nitrogen coverage for stabilizing pressure, so that oxygen in the external environment is prevented from entering; the arrangement of the exhaust port 22 can discharge excessive nitrogen in the liquid storage tank 2, so that the internal pressure is prevented from being too high. In addition, the side of the liquid storage tank 2 is also provided with a liquid level meter 23 for displaying the level of fire water in the liquid storage tank 2 in real time. The water quality monitoring module arranged at the top of the liquid storage tank 2 comprises an oxygen concentration measuring unit 41 and a corrosion monitoring unit 42, wherein the oxygen concentration measuring unit 41 is used for monitoring the oxygen concentration in the liquid storage tank 2, the corrosion monitoring unit 42 is used for monitoring the corrosion state of a pipeline, the corrosion monitoring unit 42 also collects oxidation-reduction potential and current data of materials and transmits the data to the control module, and the control module controls the operation parameters of the fire water supply system according to the received data so as to ensure that the oxygen content of water in the whole fire water supply system is lower (10-50 mu g.L -1 )。
The fire water supply system of this embodiment includes three kinds of operating condition, is water storage state, emergent state and reoxygenation state respectively, and this fire water supply system's concrete working process is as follows:
when the fire water supply system is in a normal water storage state, a large amount of fire water is not needed for fire extinguishment at this time, namely, when the total water consumption of the fire water supply system is not greater than the water production capacity of the deoxidizing module 3, the first valve 91 and the second valve 92 are in an open state, the third valve 93, the fourth valve 94 and the fifth valve 95 are all in a closed state, and water passes through the first valve 91 from the water source supply module 1,The second valve 92, the first pipe 7 and the deaeration module 3 enter the liquid storage tank 2 to form a main pipeline. At this time, the oxygen concentration measuring unit 41 and the corrosion monitoring unit 42 continuously monitor the oxygen concentration and corrosion parameters in the liquid storage tank 2, ensuring that the oxygen content of the water in the liquid storage tank 2 is 10-50. Mu.g.L -1 Within the range.
When the fire water supply system of the plant of the nuclear power station is in an emergency state, a large amount of fire water is needed to extinguish the fire at the moment, namely, when the total water consumption of the fire water supply system is larger than the water making capacity of the deoxidizing module 3, the second valve 92 and the third valve 93 are in the closed state, the first valve 91, the fourth valve 94 and the fifth valve 95 are in the open state, and are used for enabling a water source to enter the fire pipe network from the water source supply module 1 through part of the first pipeline 7, the first valve 91, the fifth valve 95, the bypass pipeline 6, part of the second pipeline 8 and the fourth valve 94 for extinguishing the fire, and a large amount of water at the moment does not need to be deoxidized through the deoxidizing module 3, and the water quality monitoring module is not in the working state. When the fire is extinguished, the required water consumption is reduced, the control module controls the fire water supply system to return to the water storage state, and the water quality monitoring device is started. When the oxygen concentration measuring unit 41 in the water quality monitoring module detects that the oxygen content of the water in the liquid storage tank 2 is greater than 50. Mu.g.L -1 When the fire water supply system of the factory building of the nuclear power station is in the reoxygenation state, the control module can control the fire water supply system of the factory building of the nuclear power station.
When the fire-fighting water supply system of the plant of the nuclear power station is in the reoxygenation state, the first valve 91 and the fourth valve 94 are in the closed state, and the second valve 92, the third valve 93 and the fifth valve 95 are in the open state, so that part of the first pipeline 7, the deoxygenation module 3, the liquid storage tank 2, part of the second pipeline 8 and the bypass pipeline 6 form a circulation loop, the circulation pump 96 can reflux the water in the liquid storage tank 2 into the deoxygenation module 3, namely, the water in the liquid storage tank 2 enters the deoxygenation module 3 through the circulation pump 96, the third valve 93, part of the second pipeline 8, the bypass pipeline 6, the fifth valve 95, the second valve 92 and part of the first pipeline 7, and flows into the liquid storage tank 2 for storage after reoxygenation.
The fire-fighting water supply system of the plant of the nuclear power station does not need to adopt corrosion-resistant materials with higher cost or add corrosion inhibitors, and reduces the oxygen concentration of the water supply system, thereby reducing the corrosion of the fire-fighting water supply system, further reducing the maintenance frequency of the fire-fighting water supply system pipe network of the nuclear power station, and improving the safety and reliability of the fire-fighting water system of the nuclear power station.
The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.
Claims (10)
1. The fire-fighting water supply system for the plant of the nuclear power station is characterized by comprising a water source supply module, a liquid storage tank, an deoxidization module, a water quality monitoring module, a control module, a nitrogen source and a bypass pipeline, wherein the water quality monitoring module is arranged at the top of the liquid storage tank, the nitrogen source is connected with the liquid storage tank through an air inlet pipeline, and the water source supply module, the deoxidization module and the liquid storage tank are sequentially connected through a first pipeline to form a main pipeline; the liquid storage tank is also connected with a second pipeline, one end of the bypass pipeline is positioned between the water source supply module and the deoxidization module, and the other end of the bypass pipeline is connected with the second pipeline; the first pipeline, the deoxidization module, the liquid storage tank, the second pipeline and the bypass pipeline form a circulation loop.
2. The fire water supply system of a nuclear power plant according to claim 1, wherein the deoxidizing module comprises a filter, a deoxidizing film unit and a sterilizing unit in sequence, and the sterilizing unit is close to the liquid storage tank; the deoxidizing module is used for enabling the oxygen content of water entering the liquid storage tank to be 10-50 mu g.L -1 。
3. The nuclear power plant building fire feedwater system of claim 2, including a first valve, a second valve, a third valve, a fourth valve, and a fifth valve, the first valve being disposed at an inlet of the first conduit, the second valve being proximate to the filter.
4. The fire water supply system of a nuclear power plant as claimed in claim 3, wherein the third valve and the fourth valve are both disposed on the second pipeline, the third valve is close to the liquid storage tank, and the fifth valve is disposed on the bypass pipeline.
5. The nuclear power plant building fire feedwater system of claim 4, wherein one end of the bypass conduit is connected to the first conduit to form a first connection point and the other end of the bypass conduit is connected to the second conduit to form a second connection point.
6. The nuclear power plant building fire feedwater system of claim 5, wherein the first connection point is located between the first valve and a second valve, and the second connection point is located between the third valve and a fourth valve.
7. A plant fire water supply system according to claim 3, wherein a circulation pump is further provided on the second pipe, the circulation pump being located between the liquid storage tank and the third valve.
8. The fire water supply system of the plant of the nuclear power plant according to claim 3, wherein the fire water supply system comprises a water storage state, an emergency state and a reoxygenation state, when the fire water supply system of the plant of the nuclear power plant is in the water storage state, the first valve and the second valve are in an open state, and the third valve, the fourth valve and the fifth valve are all in a closed state; when the fire water supply system of the plant is in the emergency state, the second valve and the third valve are in the closed state, and the first valve, the fourth valve and the fifth valve are in the open state; when the fire water supply system of the plant is in the reoxygenation state, the first valve and the fourth valve are in the closed state, the second valve, the third valve and the fifth valve are in the open state, and part of the first pipeline, the deoxygenation module, the liquid storage tank, part of the second pipeline and the bypass pipeline form the circulation loop.
9. The nuclear power plant building fire feedwater system of claim 1, wherein the water quality monitoring module includes an oxygen concentration measurement unit and a corrosion monitoring unit.
10. The fire water supply system of a nuclear power plant according to claim 1, wherein an air inlet and an air outlet are arranged at the top of the liquid storage tank, one end of the air inlet pipeline is connected with the nitrogen source, and the other end of the air inlet pipeline is connected with the air inlet; the exhaust port is used for exhausting redundant nitrogen in the liquid storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320910816.2U CN219743767U (en) | 2023-04-21 | 2023-04-21 | Fire-fighting water supply system for factory building of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320910816.2U CN219743767U (en) | 2023-04-21 | 2023-04-21 | Fire-fighting water supply system for factory building of nuclear power station |
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| Publication Number | Publication Date |
|---|---|
| CN219743767U true CN219743767U (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320910816.2U Active CN219743767U (en) | 2023-04-21 | 2023-04-21 | Fire-fighting water supply system for factory building of nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219743767U (en) |
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2023
- 2023-04-21 CN CN202320910816.2U patent/CN219743767U/en active Active
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