CN220553300U - Emergency water cooling device for nuclear power station - Google Patents
Emergency water cooling device for nuclear power station Download PDFInfo
- Publication number
- CN220553300U CN220553300U CN202321747093.5U CN202321747093U CN220553300U CN 220553300 U CN220553300 U CN 220553300U CN 202321747093 U CN202321747093 U CN 202321747093U CN 220553300 U CN220553300 U CN 220553300U
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- water
- emergency
- nuclear power
- cooling
- equipment
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 238000001816 cooling Methods 0.000 title claims abstract description 45
- 239000000498 cooling water Substances 0.000 claims abstract description 22
- 238000010248 power generation Methods 0.000 claims description 16
- 238000004146 energy storage Methods 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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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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- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model provides an emergent cooling water device of nuclear power station, includes high-order reservoir, water conduit and hydroelectric generation device, the water conduit is introduced the water of high-order reservoir into the nuclear power station scene, and the water conduit end is equipped with a plurality of water conduit branch pipes, and water conduit branch pipe provides the pressurized cooling water for nuclear power station equipment under emergency to reduce the security level of normal water cooling system and factory building, reduce emergency water cooling pump, save engineering cost. In addition, the hydroelectric generation device is arranged at the head end and/or the tail end of the water diversion pipe, an emergency power supply is provided for the nuclear power station, the high-reliability hydroelectric generation device is used for replacing an emergency diesel generator with high cost and complex maintenance, the cost is saved, and the safety is improved.
Description
Technical Field
The utility model relates to the technical field of water cooling devices, in particular to an emergency water cooling device for a nuclear power station.
Background
The water cooling system of the nuclear power station is composed of a large number of water storage tanks, a water pump, a heat exchanger and the like, and the water pump is required to complete the circulation of a cooling water loop under the drive of electric power. The new generation of nuclear power plant design introduces the passive design concept, adds a large-volume water tank at the top of a plant, omits part of water pumps, but needs to strengthen the plant, reduces the earthquake resistance, has very limited water quantity and water head pressure, and is only applied to a few systems.
In the case of losing the off-site power supply, the in-site emergency power supply depends on an emergency diesel engine. The nuclear-grade emergency diesel engine has the advantages of complex structure, high cost and high maintenance difficulty.
Disclosure of Invention
Aiming at the defects existing in the background technology, the utility model aims to provide an emergency cooling device for a nuclear power station.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a nuclear power station emergency water cooling device, includes high-order reservoir, water conduit and hydroelectric power generation device, the head end of water conduit communicates in high-order reservoir, and the end is equipped with a plurality of water conduit branch pipes, water conduit branch pipe communicates in the nuclear power station equipment that needs the cooling, does under emergency power station equipment provides sufficient pressurized cooling water, hydroelectric power generation device install in head end and/or the end of water conduit, hydroelectric power generation device provides emergency power source for the nuclear power station.
Furthermore, the water diversion branch pipe is communicated with a cooling system of a cooling water pump of nuclear power plant equipment, and is provided with pressurized cooling water in an emergency state, so that the safety level of a safety water system and a pump house of the plant is reduced; or directly accessing the cooling system of other nuclear power plant equipment to provide pressurized cooling water for the equipment, and not depending on the equipment cooling water pump in an emergency state.
Further, the water diversion branch pipe is communicated with the containment spraying system, the fire protection system, the reactor core water injection system and the secondary side waste heat discharge system.
Furthermore, a pressure regulating device is arranged on part of the water diversion branch pipes, and the pressure regulating device is a pressure reducing valve when the outlet water pressure is higher than the pressure required by the cooling system of the equipment; when the water outlet pressure of the water diversion branch pipe is lower than the equipment cooling system demand pressure, the pressure regulating device is a booster pump, and the hydroelectric generation device provides an emergency power supply for the booster pump.
Further, the emergency power supply system further comprises a first power supply source and a second power supply source, the second power supply source provides emergency power for the nuclear power station equipment in the period of 0-T1, the first power supply source provides emergency power for the nuclear power station equipment after T1, the hydroelectric power generation device forms the first power supply source, and the second power supply source is an energy storage device.
Further, the energy storage device comprises a storage battery, an inverter and a capacitor.
The beneficial effects of the utility model are as follows:
1. the utility model provides an emergency water cooling device of a nuclear power station, which comprises a high-level reservoir, a water conduit and a hydroelectric generation device, wherein the water conduit introduces water of the high-level reservoir into the site of the nuclear power station. The tail end of the water diversion pipe is provided with a plurality of water diversion branch pipes which are communicated with nuclear power plant equipment to be cooled, and sufficient pressurized cooling water is provided for the nuclear power plant equipment in an emergency state, so that the safety level of a normal water cooling system and a factory building is reduced, an electric emergency water cooling pump is reduced, the reliability is increased, and the engineering cost is saved.
2. The utility model provides an emergency cooling device of a nuclear power station, which comprises a hydroelectric power generation device, wherein the hydroelectric power generation device is arranged at the head end and/or the tail end of a water diversion pipe and provides an emergency power supply for the nuclear power station. The hydroelectric generation device is safe and reliable, low in cost and convenient to maintain, and can replace an emergency diesel generator with complex structure and high cost.
3. The utility model provides an emergency cooling device of a nuclear power station, which comprises a high-level reservoir, wherein the high-level reservoir provides sufficient cooling water for a water cooling system of the nuclear power station, a large-volume water storage tank is not required to be arranged in a reactor factory, the factory structure is simplified, and the earthquake resistance is improved.
4. The utility model provides an emergency cooling device of a nuclear power station, which also comprises a first power supply and a second power supply, wherein the first power supply is a hydroelectric generation device, the second power supply is an energy storage device, and the energy storage device can firstly provide stable electric energy for nuclear power station equipment so as to overcome the defect of long starting time when the hydroelectric generation device is directly adopted; after the hydroelectric power generation device stably operates, the energy storage device stops supplying power, and the hydroelectric power generation device supplies electric energy for the nuclear power station equipment.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of an emergency cooling device for a nuclear power plant in accordance with the present utility model;
in the figure, 10, a high-level reservoir; 20. a water conduit; 30. a water diversion branch pipe; 40. a hydroelectric power generation device; 50. a pressure regulating device; 60. an energy storage device.
Detailed Description
The present utility model will be described in detail with reference to fig. 1.
The utility model provides a nuclear power station emergency water cooling device, including high-level reservoir 10, water conduit 20 and hydroelectric generation device 40, the head end of water conduit 20 communicates in high-level reservoir 10, the end is equipped with a plurality of water conduit branch pipes 30, water conduit branch pipe 30 communicates in the nuclear power station equipment that needs to cool off, and at least part water conduit branch pipe 30 is equipped with pressure regulating device 50, provide sufficient pressurized cooling water for power station equipment under emergent state, need not to set up the bulky water tank at the reactor factory building, simplify the factory building structure, improve the anti-seismic performance, reduce normal water cooling system and the security level of factory building, reduce emergency water cooling pump, improve water cooling system's reliability, save engineering cost.
In addition, the hydroelectric generating device 40 is installed at the head end and/or the tail end of the water conduit 20, the hydroelectric generating device 40 provides emergency power for the nuclear power station, including providing power for the pressure regulating device 50, and the hydroelectric generating device 40 is safe, reliable, low in cost and convenient to maintain, and can replace an emergency diesel generator with complex structure and high cost. Under the working condition of higher stability requirement, a hydroelectric generation device 40 can be respectively arranged at the side of the high-level reservoir and the site of the nuclear power station, so that double guarantee is realized.
In this embodiment, the water level and the minimum storage capacity of the high-level reservoir 10 meet the open circulation requirement of cooling water in the emergency state of the nuclear power plant, and the hydroelectric power generation device 40 generates electricity to meet the requirement of emergency power supply power of the nuclear power plant.
In the embodiment, the water diversion branch pipe 30 is communicated with a cooling system of a cooling water pump of nuclear power plant equipment, pressurized cooling water is provided in an emergency state, and a safe water system and a pump house of the nuclear power plant are reduced to unsafe levels; or the cooling system of the nuclear power plant equipment is connected to supply pressurized cooling water for the cooling system, and the cooling of the nuclear power plant equipment in an emergency state does not depend on an equipment cooling water pump.
In this embodiment, the water diversion branch pipe 30 is communicated with the containment spraying system, the fire protection system, the core water injection system and the secondary side waste heat discharge system, and the containment spraying pump, the fire protection pump, the passive core water injection system and the passive secondary side waste heat discharge system are omitted.
In this embodiment, the cooling water pressure required for cooling the nuclear power plant equipment is different, so the water diversion branch pipe 30 is generally provided with a pressure regulating device 50. Specifically, when the outlet water pressure of the water diversion branch pipe 30 is higher than the required pressure of the cooling system of the equipment, the pressure regulating device 50 is a pressure reducing valve; when the water outlet pressure of the water diversion branch pipe 30 is lower than the equipment cooling system demand pressure, the pressure regulating device 50 is configured as a booster pump; when the water pressure at the outlet of the water diversion branch pipe 30 is matched with the cooling system demand pressure of the equipment, the pressure regulating device 50 is not required.
In this embodiment, the power supply system further includes a first power supply source and a second power supply source, the output ends of the first power supply source and the second power supply source are electrically connected to the bus bar at the downstream of the emergency power supply source, and the second power supply source provides electric energy for the nuclear power plant equipment within the period of 0-T1, the first power supply source provides electric energy for the nuclear power plant equipment after T1, the hydroelectric power generation device 40 forms the first power supply source, and the second power supply source is the energy storage device 60. The energy storage device can provide stable electric energy for the nuclear power station equipment at first so as to overcome the defect of long starting time when the hydroelectric power generation device 40 is directly adopted; after the hydro-power generating device 40 stably operates, the energy storage device 60 stops supplying power, the hydro-power generating device 40 supplies electric energy to the nuclear power plant equipment, and the surplus unused electric energy is stored in the energy storage device 60. Further, the energy storage device 60 includes a battery, an inverter, and a capacitor.
In this embodiment, the water diversion main pipe is provided with a filtering device and a dosing device at the upstream of each water diversion branch pipe 30, or each water diversion branch pipe 30 is provided with a filtering device and a dosing device, so as to ensure that the water quality meets the requirement.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and implement it, and not 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 (6)
1. The utility model provides a nuclear power station emergency water cooling device, its characterized in that includes high-order reservoir, water conduit and hydroelectric power generation device, the head end of water conduit communicates in high-order reservoir, and the end is equipped with a plurality of water conduit branch pipes, water conduit branch pipe communicates in the nuclear power station equipment that needs the cooling, for the nuclear power station equipment provides sufficient pressurized cooling water under emergency, hydroelectric power generation device install in head end and/or the end of water conduit, hydroelectric power generation device provides emergency power source for the nuclear power station.
2. The emergency water cooling device for the nuclear power plant according to claim 1, wherein the water diversion branch pipe is communicated with a cooling system of a cooling water pump of the nuclear power plant equipment, and is provided with cooling water with pressure in an emergency state, so that the safety level of a water system and a pump house of the safety plant is reduced; or directly accessing the cooling system of other nuclear power plant equipment to provide pressurized cooling water for the equipment, and not depending on the equipment cooling water pump in an emergency state.
3. The emergency water cooling device for nuclear power plant according to claim 1, wherein the water diversion branch pipe is communicated with a containment spraying system, a fire protection system, a core water injection system and a secondary side waste heat discharge system.
4. The emergency water cooling device for nuclear power plant as claimed in claim 1, wherein a pressure regulating device is installed on part of the water diversion branch pipes, and the pressure regulating device is a pressure reducing valve when the outlet water pressure is higher than the equipment cooling system demand pressure; when the water outlet pressure of the water diversion branch pipe is lower than the equipment cooling system demand pressure, the pressure regulating device is a booster pump, and the hydroelectric generation device provides an emergency power supply for the booster pump.
5. The emergency water cooling device for nuclear power plant as claimed in claim 1, further comprising a first power supply and a second power supply, wherein the second power supply provides emergency power for the nuclear power plant equipment in a period of 0-T1, the first power supply provides emergency power for the nuclear power plant equipment after T1, the hydroelectric power generation device forms the first power supply, and the second power supply is an energy storage device.
6. The emergency water cooling device for nuclear power plant as in claim 5, wherein said energy storage device comprises a battery, an inverter and a capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321747093.5U CN220553300U (en) | 2023-07-05 | 2023-07-05 | Emergency water cooling device for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321747093.5U CN220553300U (en) | 2023-07-05 | 2023-07-05 | Emergency water cooling device for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220553300U true CN220553300U (en) | 2024-03-01 |
Family
ID=90008457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321747093.5U Active CN220553300U (en) | 2023-07-05 | 2023-07-05 | Emergency water cooling device for nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220553300U (en) |
-
2023
- 2023-07-05 CN CN202321747093.5U patent/CN220553300U/en active Active
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