CN215527272U - Nuclear power station and cold source safety guarantee device thereof - Google Patents
Nuclear power station and cold source safety guarantee device thereof Download PDFInfo
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- CN215527272U CN215527272U CN202122006595.XU CN202122006595U CN215527272U CN 215527272 U CN215527272 U CN 215527272U CN 202122006595 U CN202122006595 U CN 202122006595U CN 215527272 U CN215527272 U CN 215527272U
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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
Abstract
The utility model discloses a nuclear power station and a cold source safety guarantee device thereof, comprising: the monitoring device is used for monitoring the entrance channel of the cooling medium transmission unit; the intercepting device comprises: the first interception piece with a first aperture, at least one second interception piece with a second aperture and a third interception piece with a third aperture are sequentially arranged along the transmission direction of the cooling medium; wherein the first aperture is larger than the second aperture; the third aperture is larger than the second aperture; the monitoring device is arranged in the external cooling medium source and/or between the first interception piece and the second interception piece and is used for monitoring organisms in the cooling medium and transmitting a monitoring result to the early warning device for early warning analysis and prompt. According to the utility model, the interception capability of marine organisms in the cooling medium is enhanced through the combination of depth defense and obstruction of the first interception piece, the second interception piece and the third interception piece.
Description
Technical Field
The utility model relates to the technical field of nuclear power station cold source safety guarantee, in particular to a nuclear power station and a cold source safety guarantee device thereof.
Background
The cold source system is an important component of the nuclear power plant, provides filtered seawater for a circulating water system, an important plant water system, a circulating water treatment system and the like, and discharges heat generated in the operation of a turbonator plant and nuclear island plant equipment into the open sea in a heat exchange mode. Solid suspended matters, floating matters, marine organisms and the like mixed in seawater block the cold source system, so that the cooling capacity of the cold source system is insufficient or lost, and the load of a unit is reduced, even the unit is shut down and stopped. The outbreak of marine life poses a great challenge to the safety of a cold source of a nuclear power plant, and on one hand, the occurrence and development rules of various marine lives belong to unknown and semi-unknown fields basically, and the occurrence scale of disaster-causing marine life and the outbreak magnitude to be prevented by the power plant also belong to unknown. On the other hand, the design reference of a cold source, disaster-causing input, pre-filtering measures and the like exist in the technical short board.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a nuclear power station and a cold source safety guarantee device thereof aiming at least one defect in the prior art.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a nuclear power station cold source safety guarantee device is constructed, includes: the monitoring device is used for monitoring the entrance channel of the cooling medium transmission unit;
the intercepting device comprises: the first interception piece with a first aperture, at least one second interception piece with a second aperture and a third interception piece with a third aperture are sequentially arranged along the transmission direction of the cooling medium; wherein the first aperture is larger than the second aperture; the third aperture is larger than the second aperture;
the monitoring device is arranged in an external cooling medium source and/or between the first interception piece and the second interception piece and is used for monitoring organisms in the cooling medium and transmitting a monitoring result to the early warning device for early warning analysis and prompt.
Preferably, in the safety and security device for a cold source of a nuclear power plant according to the present invention, the second blocking member includes: the outer diameter of the collecting part is gradually reduced along the transmission direction of the cooling medium, the collecting part is provided with the second hole diameter, and the collecting part is positioned at the tail end of the collecting part.
Preferably, in the safety and security device for a cold source of a nuclear power plant according to the present invention, the second interceptor further includes: and the suction piece is communicated with the collecting part and is used for sucking the collected matters in the collecting part to the outside.
Preferably, in the nuclear power plant cold source safety guarantee device of the present invention, the intercepting part is provided with a work monitor for transmitting the monitored working parameters of the intercepting part to the early warning device.
Preferably, in the safety guarantee device for a cold source of a nuclear power plant according to the present invention, the intercepting device further includes: the killing and driving part is arranged between the first interception part and the second interception part and is used for killing and driving off part of organisms.
Preferably, in the safety and security device for a cold source of a nuclear power plant according to the present invention, the monitoring device includes: imaging sonar instrument, normal position imager, water quality detection buoy station, on water/under water video shooting device in one or more.
Preferably, in the safety guarantee device for a cold source of a nuclear power plant according to the present invention, the intercepting device further includes: the fourth interception piece is arranged at the downstream of the third interception piece and is provided with a fourth aperture; wherein the fourth aperture is smaller than the second aperture.
Preferably, in the safety guarantee device for a cold source of a nuclear power plant according to the present invention, the safety guarantee device for a cold source of a nuclear power plant further includes: and the catcher is arranged on an outlet channel of the cooling medium conveying unit and provided with the fourth aperture.
Preferably, in the safety guarantee device for a cold source of a nuclear power plant according to the present invention, the safety guarantee device for a cold source of a nuclear power plant further includes: and the terminal is in communication connection with the early warning device.
The utility model also constructs a nuclear power station which comprises any one of the nuclear power station cold source safety guarantee devices.
By implementing the utility model, the following beneficial effects are achieved:
according to the utility model, the interception capability of marine organisms in the cooling medium is enhanced through the combination of depth defense and obstruction of the first interception piece, the second interception piece and the third interception piece. Meanwhile, the monitoring device is adopted to monitor organisms in an external cooling medium source and/or the cooling medium between the first interception piece and the second interception piece, and at least one second interception piece can be adaptively arranged according to the marine organism interception amount prompted by the early warning device, so that the personnel maintenance workload of the interception facility is reduced, the labor cost is reduced, meanwhile, the underwater operation of personnel is reduced, and the industrial safety risk is indirectly reduced.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a nuclear power station cold source safety guarantee device.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
In the following description, it is to be understood that the orientations and positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inner", "outer", "leading", "trailing", and the like are configured and operated in specific orientations based on the orientations and positional relationships shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device or element referred to must have a specific orientation, and thus, are not to be construed as limiting the present invention.
The technical problem to be solved by the present invention is to solve the current situation of a nuclear power station cold source system, which has insufficient early warning on external disaster risks of the cold source, insufficient intercepting and salvaging capabilities of marine organisms and lack of prevention of external disasters of the cold source, by combining precaution, gradual intercepting and dredging, so as to establish a nuclear power station cold source safety guarantee device as shown in fig. 1, particularly for a coastal nuclear power station, comprising: the device comprises an intercepting device, a monitoring device and an early warning device, wherein the intercepting device, the monitoring device and the early warning device are used on an inlet channel of a cooling medium transmission unit. In some embodiments, the cooling medium transfer assembly comprises a circulating water pump and a service water pump, and the inlet channel of the circulating water pump is communicated with an external cooling medium source, wherein the cooling medium is water, preferably seawater.
In this embodiment, the intercepting apparatus includes: the first interception piece with a first aperture, at least one second interception piece with a second aperture and a third interception piece with a third aperture are sequentially arranged along the transmission direction of the cooling medium; wherein the first aperture is larger than the second aperture; the third aperture is larger than the second aperture.
The monitoring device is arranged in an external cooling medium source and/or between the first interception piece and the second interception piece and is used for monitoring organisms in the cooling medium and transmitting a monitoring result to the early warning device for early warning analysis and prompt. In some embodiments, the monitoring device comprises: imaging sonar instrument, normal position imager, water quality detection buoy station, on water/under water video shooting device in one or more.
The early warning device is used for performing imaging display and data analysis according to the detection result and generating a warning signal. In some embodiments, the nuclear power station cold source safety guarantee device further comprises: and the terminal is in communication connection with the early warning device and is used for transmitting signals to the terminal in real time.
Specifically, the first interception member is arranged at the opening door of the inlet channel and used for intercepting objects above the first aperture size in the cooling medium. In some embodiments, the first interceptor is an intercepting net or a floating raft, the first aperture is 50mm, and the objects include marine life and floating objects. In other embodiments, the first interceptor may be selected to have a pore size of 40mm or 60mm, depending on the sea creatures and floating objects in the sea area.
The second interception piece is used for intercepting and collecting objects with the size larger than the second aperture in the cooling medium passing through the first interception piece. In some embodiments, the second interceptor is a mechanized string bag, the second aperture is 5mm, and the objects include marine life and floating objects. In other embodiments, the second interceptor may be selected to have a pore size of 4mm or 6mm, depending on the sea creatures and floaters in the sea area.
The second interceptor includes: the outer diameter of the intercepting part is gradually reduced along the transmission direction of the cooling medium and is provided with a second hole diameter, and the collecting part is positioned at the tail end of the intercepting part. The intercepting part is used for intercepting the objects with the size larger than the second aperture in the cooling medium passing through the first intercepting part. The collecting part is used for collecting the objects with the size larger than the second aperture along with the transmission of the cooling medium. In some embodiments, the second interceptor member is an interceptor mesh.
Preferably, in order to ensure sufficient interception, the intercepting device comprises at least two second intercepting parts which are arranged in sequence, wherein the second intercepting parts positioned at the downstream are used as backup and can be automatically collected and released.
In some embodiments, the second interceptor further comprises: and a suction member in communication with the collecting portion for sucking the collected matter in the collecting portion to the outside, for example, to a refuse transfer system.
The third interception piece is used for intercepting objects with the size larger than the third aperture in the cooling medium passing through the second interception piece. In some embodiments, the third interceptor is a bottom-tucking net, the third aperture is 50mm, and the object comprises an upstream broken second interceptor, thereby avoiding a situation where the upstream broken net is rolled into the pump room.
In order to further avoid the situation that the upstream crushing net is rolled into the pump room, the intercepting part is provided with a work monitor for transmitting the monitored working parameters of the intercepting part to the early warning device. Wherein the operating parameters include differential pressure and tension. If the pressure difference is larger, the blockage of the intercepting part is indicated; if the pulling force is large, the intercepting part is easy to break.
In this embodiment, the intercepting apparatus further includes: the killing and expelling part is arranged between the first blocking part and the second blocking part and is used for killing and expelling part of organisms, for example, the specific marine organisms are pertinently expelled by using various means such as sound wave, light expelling and the like, and for example, the algae marine organisms are killed by using technical means such as modified clay sedimentation red tide algae and the like, so that the intercepting and cleaning work after a large amount of organisms enter a water intake is reduced.
In this embodiment, in order to avoid that some shellfish organisms adhere to the pipeline and grow up over time to damage the nuclear power plant, the intercepting apparatus further comprises: the fourth interception piece is arranged at the downstream of the third interception piece and is provided with a fourth aperture; wherein the fourth aperture is smaller than the second aperture. In some embodiments, the fourth interceptor is a drum screen in a pump room of a prokaryotic power station, and the fourth aperture is 3 mm.
In this embodiment, this nuclear power station cold source safety guarantee device still includes: and the catcher is arranged on an outlet channel of the cooling medium conveying unit and provided with a fourth aperture. In some embodiments, the shellfish trap is a shellfish trap in a prokaryotic island plant, and the fourth aperture is 3 mm.
In order not to change the original nuclear power station, the interception device further comprises: and the coarse grating, the fine grating trash remover and the chain type filter screen are positioned between the third interception piece and the fourth interception piece and are sequentially arranged. In some embodiments, the aperture of the coarse grid is 200mm and the aperture of the fine grid cleaner is 50 mm.
In detail, the embodiment further provides a safety guarantee method for a cold source of a nuclear power station, which includes the following steps:
step A, establishing a marine life risk calendar by carrying out marine life risk investigation, and adopting targeted risk coping preparation according to marine lives with different risk levels of corresponding months;
step B, early warning and monitoring, namely monitoring and early warning outbreak of marine organisms by comprehensive technical means such as seawater quality monitoring, overwater video monitoring, underwater video monitoring and sonar monitoring, and preparing in advance according to monitoring results;
c, expelling, killing and carrying out targeted expelling on specific marine organisms by utilizing various means such as sound waves, light expelling and the like; the algae and the marine organisms are killed by technical means such as modified clay settlement red tide algae and the like, so that the interception and cleaning work after a large amount of algae and marine organisms enter a water intake is reduced;
and D, intercepting and cleaning, including primary interception of the large sundries by the first intercepting piece arranged at the entrance. When a large amount of marine organisms with the volume of more than 5mm explode, the marine organisms can be intercepted and collected by the two stages of second intercepting parts. The upstream crushing net can also be intercepted by a third intercepting part. And intercepting marine organisms growing in the cold source flow passage through a fourth intercepting part and a shellfish catcher. By intercepting layer by layer, the marine organisms entering the water taking system are reduced in volume and quantity under the conditions that the water taking flow speed and flow are not influenced and the stress of an intercepting facility is reduced as much as possible, and the remaining small amount of small marine organisms are dredged through the step E to enter the sea again;
and E, orderly dredging, namely, dredging a small amount of marine organisms with the diameter less than 3mm after being intercepted layer by layer to enable the marine organisms to reenter the sea, wherein in order to achieve the aim, the shellfish catcher is required to have consistent aperture in the drum net, 3mm is adopted, and a tubular heat exchanger is preferentially adopted by an RRI/SEC heat exchanger to increase the flow area.
The utility model also discloses a nuclear power station, which comprises any one of the nuclear power station cold source safety guarantee devices, and details are not repeated herein. Completely, still include cooling medium transmission unit, conventional factory building and nuclear island factory building. The cooling medium transmission unit comprises a circulating water pump and an important service water pump, wherein the circulating water pump is connected to auxiliary machine cooling water and a condenser of a conventional plant, and the important service water pump is connected to the RRI side of the shellfish catcher and the RRI side of the heat exchanger.
By implementing the utility model, the following beneficial effects are achieved:
according to the utility model, the interception capability of marine organisms in the cooling medium is enhanced through the combination of depth defense and obstruction of the first interception piece, the second interception piece and the third interception piece. Meanwhile, the monitoring device is adopted to monitor organisms in an external cooling medium source and/or the cooling medium between the first interception piece and the second interception piece, and at least one second interception piece can be adaptively arranged according to the marine organism interception amount prompted by the early warning device, so that the personnel maintenance workload of the interception facility is reduced, the labor cost is reduced, meanwhile, the underwater operation of personnel is reduced, and the industrial safety risk is indirectly reduced.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the utility model, are given by way of illustration and description, and are not to be construed as limiting the scope of the utility model; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a nuclear power station cold source safety guarantee device which characterized in that includes: the monitoring device is used for monitoring the entrance channel of the cooling medium transmission unit;
the intercepting device comprises: the first interception piece with a first aperture, at least one second interception piece with a second aperture and a third interception piece with a third aperture are sequentially arranged along the transmission direction of the cooling medium; wherein the first aperture is larger than the second aperture; the third aperture is larger than the second aperture;
the monitoring device is arranged in an external cooling medium source and/or between the first interception piece and the second interception piece and is used for monitoring organisms in the cooling medium and transmitting a monitoring result to the early warning device for early warning analysis and prompt.
2. The nuclear power plant cold source safety guarantee device as claimed in claim 1, wherein the second interceptor comprises: the outer diameter of the collecting part is gradually reduced along the transmission direction of the cooling medium, the collecting part is provided with the second hole diameter, and the collecting part is positioned at the tail end of the collecting part.
3. The nuclear power plant cold source safety guarantee device as claimed in claim 2, wherein the second interceptor further comprises: and the suction piece is communicated with the collecting part and is used for sucking the collected matters in the collecting part to the outside.
4. The nuclear power plant cold source safety guarantee device as claimed in claim 2, wherein the intercepting part is provided with a work monitor for transmitting the monitored working parameters of the intercepting part to the early warning device.
5. The nuclear power plant cold source safety guarantee device as claimed in claim 1, wherein the intercepting device further comprises: the killing and driving part is arranged between the first interception part and the second interception part and is used for killing and driving off part of organisms.
6. The nuclear power plant cold source safety guarantee device as claimed in claim 1, wherein the monitoring device comprises: imaging sonar instrument, normal position imager, water quality detection buoy station, on water/under water video shooting device in one or more.
7. The nuclear power plant cold source safety guarantee device as claimed in claim 1, wherein the intercepting device further comprises: the fourth interception piece is arranged at the downstream of the third interception piece and is provided with a fourth aperture; wherein the fourth aperture is smaller than the second aperture.
8. The nuclear power plant cold source safety guarantee device of claim 7, further comprising: and the catcher is arranged on an outlet channel of the cooling medium conveying unit and provided with the fourth aperture.
9. The nuclear power plant cold source safety guarantee device of claim 1, further comprising: and the terminal is in communication connection with the early warning device.
10. A nuclear power plant, characterized by comprising a nuclear power plant cold source safety device as claimed in any one of claims 1 to 9.
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| CN202122006595.XU CN215527272U (en) | 2021-08-24 | 2021-08-24 | Nuclear power station and cold source safety guarantee device thereof |
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| CN202122006595.XU CN215527272U (en) | 2021-08-24 | 2021-08-24 | Nuclear power station and cold source safety guarantee device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341514A (en) * | 2022-09-05 | 2022-11-15 | 中广核工程有限公司 | Cold source safety comprehensive fortification system for nuclear power plant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341514A (en) * | 2022-09-05 | 2022-11-15 | 中广核工程有限公司 | Cold source safety comprehensive fortification system for nuclear power plant |
| WO2024051023A1 (en) * | 2022-09-05 | 2024-03-14 | 中广核工程有限公司 | Comprehensive fortification system for cold source safety of nuclear power plant |
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