CN118053603A - Method, device, equipment and medium for acquiring core damage information - Google Patents
Method, device, equipment and medium for acquiring core damage information Download PDFInfo
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Abstract
The invention discloses a method, a device, equipment and a medium for acquiring core damage information. The method comprises the following steps: acquiring at least one nuclear power unit spraying mode of the nuclear power unit; aiming at each nuclear power unit spraying mode, at least one detection type and detection proportion corresponding to the nuclear power unit spraying mode are obtained; determining at least one detection dosage rate type corresponding to a spraying mode of the nuclear power unit; acquiring the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to a spraying mode of the nuclear power unit; calculating the radiation detection dose rate in the containment corresponding to the number of radiation photons in the spraying time period corresponding to each detection dose rate type corresponding to the spraying mode of the nuclear power unit; obtaining a thermocouple detection proportion; and obtaining the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode, and determining the core damage information corresponding to the nuclear power unit spraying mode. The technical scheme of the embodiment of the invention can improve the accuracy of core damage information acquisition.
Description
Technical Field
The present invention relates to the field of data processing technologies, and in particular, to a method, an apparatus, a device, and a medium for acquiring core damage information.
Background
The clear reactor core damage information in the nuclear accident emergency plan of the nuclear power plant is an important technical basis for organizing emergency protection actions, and the reactor core damage information also provides a reference for estimating the radiation consequences of the accident.
Currently, through real-time detection of radiation data of a nuclear power unit, damage evaluation is performed according to the radiation data.
However, the nuclear power unit operation modes are diversified, the reactor core damage information is acquired through the same data detection mode, and the accuracy of acquiring the reactor core damage information is low.
Disclosure of Invention
The invention provides a method, a device, equipment and a medium for acquiring core damage information so as to improve the accuracy of core damage information acquisition.
In a first aspect, an embodiment of the present invention provides a method for acquiring core damage information, where the method includes:
acquiring at least one nuclear power unit spraying mode of the nuclear power unit;
aiming at each nuclear power unit spraying mode, at least one detection type and detection proportion corresponding to the nuclear power unit spraying mode are obtained;
Aiming at each nuclear power unit spraying mode, determining at least one detection dosage rate type corresponding to the nuclear power unit spraying mode according to each detection type and detection proportion corresponding to the nuclear power unit spraying mode;
aiming at each nuclear power unit spraying mode, according to each detection dosage rate type corresponding to the nuclear power unit spraying mode, acquiring the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode;
Aiming at each nuclear power unit spraying mode, according to the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode, calculating the radiation detection dosage rate in the containment corresponding to the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode;
Obtaining the detection quantity of thermocouples;
Aiming at each nuclear power unit spraying mode, according to the radiation detection dosage rate and the thermocouple detection quantity in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode, obtaining the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode, and determining the core damage information corresponding to the nuclear power unit spraying mode.
In a second aspect, an embodiment of the present invention further provides a core damage information obtaining apparatus, including:
The spraying mode acquisition module is used for acquiring at least one spraying mode of the nuclear power unit;
The detection information acquisition module is used for acquiring at least one detection type and detection proportion corresponding to the nuclear power unit spraying modes aiming at the nuclear power unit spraying modes;
The dose type determining module is used for determining at least one detection dose rate type corresponding to the nuclear power unit spraying mode according to each detection type and detection proportion corresponding to the nuclear power unit spraying mode aiming at each nuclear power unit spraying mode;
The photon number acquisition module is used for acquiring the radiation photon number in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode according to each detection dosage rate type corresponding to the nuclear power unit spraying mode;
The dose rate calculation module is used for calculating the radiation detection dose rate in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode according to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode;
The thermocouple number acquisition module is used for acquiring the thermocouple detection number;
The damage information determining module is used for obtaining the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode according to the radiation detection dose rate and the thermocouple detection number in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode, and determining the core damage information corresponding to the nuclear power unit spraying mode.
In a third aspect, an embodiment of the present invention further provides a core damage information obtaining apparatus, where the core damage information obtaining apparatus includes:
at least one processor; and
A memory communicatively coupled to the at least one processor; wherein,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the core damage information acquisition method of any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement the core damage information acquisition method of any one of the embodiments of the present invention when executed.
According to the technical scheme, at least one nuclear power unit spraying mode of the nuclear power unit is obtained, at least one detection type and detection proportion corresponding to the nuclear power unit spraying mode are obtained for each nuclear power unit spraying mode, at least one detection dosage rate type corresponding to the nuclear power unit spraying mode is determined, the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode is obtained, the radiation detection dosage rate in the containment shell corresponding to the number of radiation photons in each spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode is calculated, the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode are obtained in combination with the thermocouple detection proportion, core damage information corresponding to the nuclear power unit spraying mode is determined, core damage information corresponding to different spraying modes is obtained through different spraying modes of the nuclear power unit, the problem that core damage information corresponding to different spraying modes is obtained by using the same mode is avoided, and the core damage information obtaining accuracy is improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, 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 invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method of acquiring core damage information provided in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart of a method of obtaining core damage information provided in accordance with an embodiment of the present invention;
FIG. 3 is a block diagram of a core damage information acquisition device provided in accordance with an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a core damage information obtaining apparatus according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the technical scheme of the embodiment of the invention, the acquisition, storage, application and the like of the spraying mode and the like of the related nuclear power unit accord with the regulations of related laws and regulations, and the method does not violate the popular regulations of the public order.
Example 1
Fig. 1 is a flowchart of a core damage information acquisition method according to an embodiment of the present invention. The method can be executed by a core damage information acquisition device, the core damage information acquisition device can be realized in a hardware and/or software mode, and the core damage information acquisition device can be configured in core damage information acquisition equipment.
Referring to the core damage information acquisition method shown in fig. 1, it includes:
s101, acquiring at least one nuclear power unit spraying mode of the nuclear power unit.
The nuclear power unit can be a basic power generation unit consisting of a reactor, a matched steam turbine generator unit and a system and facilities required for maintaining normal operation and ensuring safety. The nuclear power unit spraying mode can be a method for reducing peak pressure and temperature in the containment after a water loss accident and a main steam pipeline cracking accident in the containment occur to prevent the overpressure of the containment.
Specifically, after a water loss accident and a main steam pipeline cracking accident in the containment occur, different nuclear power units reduce peak pressure and temperature in the containment to prevent different facilities with overpressure of the containment, and meanwhile, different switch states of different facilities also influence the peak pressure and temperature in the containment. At least one nuclear power unit spraying mode of the nuclear power unit is obtained, and the different nuclear power unit spraying modes have different degrees of reducing peak pressure and temperature in the containment of the nuclear power unit. Acquisition means include, but are not limited to: user input, data queries, etc., to which embodiments of the invention are not limited.
In one example, the nuclear power unit spray pattern for the nuclear power unit is obtained by user input is containment cooling device start and containment spray device shut down.
S102, at least one detection type and detection proportion corresponding to the spraying mode of each nuclear power unit are obtained according to the spraying mode of each nuclear power unit.
The detection type may be a damage type of the reactor core to be detected. The detection ratio may be a damage ratio of the reactor core to be detected.
Specifically, reactor core damage includes both types of cladding damage and fuel overheating. The reactor core damage ratio may be 1% and 100%. For each nuclear power unit spraying mode, at least one detection type and detection proportion corresponding to different nuclear power unit spraying modes are obtained, and the detection type and detection proportion of a reactor corresponding to different nuclear power unit spraying modes corresponding to the nuclear power unit are obtained.
In one example, the nuclear power unit spraying mode is that a containment cooling device is started and a containment spraying device is closed, and detection types corresponding to the nuclear power unit spraying mode are obtained, namely, the shell is damaged and the fuel is overheated, and the detection proportion is 1% and 100%.
S103, determining at least one detection dosage rate type corresponding to the nuclear power unit spraying mode according to each detection type and detection proportion corresponding to the nuclear power unit spraying mode aiming at each nuclear power unit spraying mode.
The detection dose rate type may be a type of detecting radiation dose in the containment in the reactor combined by the detection type and the detection proportion of the reactor.
Specifically, for each nuclear power unit spraying mode, the detection type and the detection proportion of the reactor to be detected in each nuclear power unit spraying mode are obtained, and each detection dosage rate type corresponding to each nuclear power unit spraying mode is obtained according to the combination of the detection type and the detection proportion. Example: the detection type is fuel overheat, the detection proportion is 1%, and the detection dosage rate type formed by combining the detection type and the detection proportion is 1% fuel overheat containment dosage rate; the detection type is shell breakage, the detection proportion is 100%, and the detection dosage rate type formed by combining the detection type and the detection proportion is 100% shell breakage containment dosage rate.
In one example, as shown in the previous example, a spraying mode of the nuclear power unit and a detection type and a detection proportion corresponding to the spraying mode are obtained. And determining that the detection dosage rate type corresponding to the nuclear power unit spraying mode is 1% fuel overheating containment dosage rate, 100% cladding damaged containment dosage rate and 100% fuel overheating containment dosage rate according to the nuclear power unit spraying mode.
S104, aiming at each nuclear power unit spraying mode, acquiring the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode according to each detection dosage rate type corresponding to the nuclear power unit spraying mode.
The spraying time period can be a time period with unchanged time length of starting timing after the preset reactor core is damaged. The number of radiation photons may be the number of photons within the containment detected during the spraying period, starting timing after the reactor core is damaged.
Specifically, different nuclear power unit spraying modes correspond to different detection dosage rate types, and the number of leaked radiation photons in the containment corresponding to the different detection dosage rate types is different. And acquiring the radiation photon numbers corresponding to the different detection dosage rate types according to the different detection dosage rate types.
In one example, the spraying period is 15 minutes. The nuclear power unit spraying mode is that the containment cooling device is started and the containment spraying device is closed. And determining that the detection dosage rate type corresponding to the nuclear power unit spraying mode is 1% fuel overheating containment dosage rate, 100% cladding damaged containment dosage rate and 100% fuel overheating containment dosage rate according to the nuclear power unit spraying mode. And acquiring the radiation photon number in 15 minutes, which corresponds to the 1% fuel overheat containment dose rate, the 100% shell breakage containment dose rate and the 100% fuel overheat containment dose rate corresponding to the nuclear power unit spraying mode.
S105, aiming at each nuclear power unit spraying mode, according to the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode, calculating the radiation detection dosage rate in the containment corresponding to the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode.
The in-containment radiation detection dose rate may be a radiation dose detected per unit time in the containment of the reactor core.
In particular, the number of radiation photons detected in the containment vessel during the spraying period may be affected for different nuclear power unit spraying modes and different detection dose rate types. And calculating the radiation detection dosage rate detected in the corresponding unit time according to the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the spraying mode of the nuclear power unit.
In one example, as described in the previous example, the number of radiation photons corresponding to the spraying mode of the nuclear power unit is obtained. Dividing the atmosphere of the containment into a plurality of volume microelements dV according to the number of each radiation photon, dividing the wall surface of the containment into a plurality of area microelements dS, and obtaining the radiation detection dose rate in the containment corresponding to the number of the radiation photons in the spraying time period corresponding to each detection dose rate type corresponding to the spraying mode of the nuclear power unit through integral calculation of the number of the radiation photons.
S106, obtaining a thermocouple detection proportion.
The thermocouples may be, among other things, sensors for measuring the temperature of the fuel outlet to prevent nucleate boiling, as well as radial distribution of the reactor core temperature. The thermocouple detection ratio may be the ratio of the number of thermocouples screened as needed to the number of thermocouples available.
Specifically, the reactor core fuel produces a severe exothermic reaction in the reactor that can raise the core temperature. If the core temperature is too high, damage to the core structure and fuel release can result, causing severe radiation leakage. Therefore, the core outlet needs to be subjected to temperature detection to judge the core damage condition. The temperature of the outlet of the reactor core can be timely detected by installing a thermocouple at the outlet of the reactor core. The number of available core outlet thermocouples is obtained, and the thermocouples are classified according to core outlet temperature values detected by the core outlet thermocouples. And obtaining the thermocouple detection proportion by calculating the ratio of the number of thermocouples to be classified to the number of available thermocouples.
In one example, the number of available thermocouples is 10, the number of thermocouples with the temperature of [650 ℃,1093 ℃ is counted to be 2 according to the temperature detected by the thermocouples, and the ratio of the number of thermocouples to the number of available thermocouples to be screened according to the requirement is 0.2.
S107, aiming at each nuclear power unit spraying mode, according to the radiation detection dose rate and the thermocouple detection number in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode, obtaining the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode, and determining the core damage information corresponding to the nuclear power unit spraying mode.
The core damage types can be, among other things, cladding damage types and fuel overheating types. The core damage ratio may be a ratio of an in-containment radiation detection dose rate at a damage ratio of 1% for the core damage type to an in-containment radiation detection dose rate at a damage ratio of 100% for the core damage type. The core damage information may be information describing core damage consisting of core damage type and core damage ratio.
Specifically, when the core damage type is an enclosure damage, the core damage ratio may be a ratio of a 1% enclosure damage containment dose rate to a 100% in-enclosure radiation detection dose rate. When the core damage type is fuel superheat, the core damage ratio may be the ratio of 1% fuel superheat containment dose rate to 100% fuel superheat containment internal radiation detection dose rate. The core damage type corresponds to the core damage proportion. And obtaining the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode, and forming the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode into core damage information corresponding to the nuclear power unit spraying mode.
In one example, the nuclear power unit is sprayed in a manner that the containment cooling device is activated and the containment spraying device is deactivated. Aiming at the nuclear power unit spraying mode, the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode are obtained through the ratio between the values of the radiation detection dosage rate in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode and the ratio between the value of the radiation detection dosage rate and the thermocouple detection proportion, and core damage information corresponding to the nuclear power unit spraying mode is determined.
According to the technical scheme, at least one nuclear power unit spraying mode of the nuclear power unit is obtained, at least one detection type and detection proportion corresponding to the nuclear power unit spraying mode are obtained for each nuclear power unit spraying mode, at least one detection dosage rate type corresponding to the nuclear power unit spraying mode is determined, the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode is obtained, the radiation detection dosage rate in the containment shell corresponding to the number of radiation photons in each spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode is calculated, the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode are obtained in combination with the thermocouple detection proportion, core damage information corresponding to the nuclear power unit spraying mode is determined, core damage information corresponding to different spraying modes is obtained through different spraying modes of the nuclear power unit, the problem that core damage information corresponding to different spraying modes is obtained by using the same mode is avoided, and the core damage information obtaining accuracy is improved.
Optionally, according to each detection dosage rate type corresponding to each nuclear power unit spraying mode, acquiring the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to each nuclear power unit spraying mode, including: aiming at each nuclear power unit spraying mode, according to each detection dosage rate type corresponding to the nuclear power unit spraying mode, photon removal quantity corresponding to each detection dosage rate type corresponding to the kernel motor unit spraying mode in the spraying time period is obtained; aiming at each nuclear power unit spraying mode, acquiring a radiation source type corresponding to the nuclear power unit spraying mode, a radiation source intensity corresponding to the radiation source type and a radiation detection distance; aiming at each nuclear power unit spraying mode, according to the strong radiation source corresponding to the radiation source type corresponding to the nuclear power unit spraying mode, the radiation detection distance and the photon removal quantity corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode, the radiation photon number in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode is obtained.
The photon removal quantity can be the quantity of photons which are reduced under the condition that the quantity of detected radiation photons is reduced due to the deposition of photons in the containment due to the different spraying modes of the nuclear power unit. The radiation source type may be the species of the species generating the radiation. The radiation source intensity may be the radiation intensity of the radionuclide that produces the radiation. The radiation detection distance may be the distance of the detector from the volume and area bins.
Specifically, for each nuclear power unit spraying mode, photon removal quantity corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode in the spraying time period is obtained according to each detection dosage rate type corresponding to the nuclear power unit spraying mode. Acquisition means include, but are not limited to: data computation, network queries, user input, etc., to which embodiments of the invention are not limited. And aiming at the spraying modes of each nuclear power unit, acquiring the radiation source type corresponding to the spraying modes of the nuclear power unit, the radiation source intensity corresponding to the radiation source type and the radiation detection distance, and calculating the initial radiation photon number corresponding to each detection dose rate type corresponding to the spraying modes of the kernel motor unit in the spraying time period. And obtaining the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the spraying mode of the nuclear power unit by subtracting the number of removal photons corresponding to each detection dosage rate type corresponding to the spraying mode of the nuclear power unit from the number of initial radiation photons corresponding to each detection dosage rate type corresponding to the spraying mode of the nuclear power unit.
The in-containment radiation monitoring dose rate (CRM) mainly includes a containment radiation level CRM1 corresponding to the spike effect of iodine, a containment radiation level CRM2 corresponding to 1% fuel superheat, a containment radiation level CRM3 corresponding to 100% cladding damage, and a containment radiation level CRM4 corresponding to 100% fuel superheat. And (3) when the corresponding containment dose rate setting value is calculated, a point-core integration method is adopted, and the external irradiation absorption dose at the detector is obtained by integrating the radiation source point-core attenuation functions on the containment atmosphere and the containment wall surface.
For example, let a point a have a radiation source with a radiation source intensity S 0 and a radiation source type with the same property γ, and place a detector at a point P with a radiation detection distance a, then the γ photons that can be received by the detector without a medium between the radiation source and the detection point are equal to the solid angle (dA/a 2) of the cross section dA of the detector to the point a divided by 4pi, that is:
According to the formula, the initial radiation photon numbers corresponding to the detection dose rate types corresponding to the kernel motor group spraying mode in the spraying time period can be obtained. Considering that primary radiation is exponentially attenuated in the medium and taking into account the accumulation of scattered radiation, the number of gamma photons emitted from point a through the medium to the detector is given by:
Where B is the accumulation factor and μ is the linear reduction coefficient. Photon fluence rate at point P, by definition N/dA, i.e.:
The formula is a formula for describing point source gamma photon attenuation, and photon removal quantity corresponding to each detection dosage rate type corresponding to a spraying mode of the kernel motor group in a spraying time period can be calculated.
Dividing the atmosphere of the containment into a plurality of volume infinitesimal dVs, dividing the wall surface of the containment into a plurality of area infinitesimal dS, and regarding the radiation source gamma with the radiation source intensity distribution of S γ, the radiation detection dose rate in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode formed by the detector position is as follows:
where r is the distance of the volume infinitesimal dV and the area infinitesimal dS from the detector. In actual calculation, the radiation source is divided into a plurality of energy groups according to the type of the radiation source and the intensity distribution of the radiation source, and the calculation is performed according to a single energy processing method.
In one example, the nuclear power unit is sprayed in a manner that the containment cooling device is activated and the containment spraying device is deactivated. And determining that the detection dosage rate type corresponding to the nuclear power unit spraying mode is 1% fuel overheating containment dosage rate, 100% cladding damaged containment dosage rate and 100% fuel overheating containment dosage rate according to the nuclear power unit spraying mode. And obtaining photon removal quantity corresponding to each detection dosage rate type corresponding to the core motor group spraying mode in the spraying time period according to each detection dosage rate type corresponding to the core motor group spraying mode. And aiming at the spraying modes of each nuclear power unit, acquiring the radiation source type corresponding to the spraying modes of the nuclear power unit, the radiation source intensity corresponding to the radiation source type and the radiation detection distance, and calculating the initial radiation photon number corresponding to each detection dose rate type corresponding to the spraying modes of the kernel motor unit in the spraying time period. Aiming at each nuclear power unit spraying mode, the radiation source intensity and the radiation detection distance corresponding to the radiation source type corresponding to the nuclear power unit spraying mode and the photon removal quantity corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode are calculated. And obtaining the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the spraying mode of the nuclear power unit by subtracting the number of removal photons corresponding to each detection dosage rate type corresponding to the spraying mode of the nuclear power unit from the number of initial radiation photons corresponding to each detection dosage rate type corresponding to the spraying mode of the nuclear power unit.
The photon removal quantity corresponding to each detection dosage rate type corresponding to the core motor group spraying mode in the spraying time period can be obtained, the reduced radiation photon quantity under the influence of different nuclear power unit spraying modes can be obtained, and the radiation photon quantity result in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode is more accurate.
Optionally, obtaining the thermocouple detection number includes: acquiring a temperature interval; acquiring the number of thermocouples at the reactor core outlet, the temperature value of which is within a temperature interval; acquiring the number of available core outlet thermocouples; and determining the thermocouple detection proportion according to the number of the core outlet thermocouples and the number of the available core outlet thermocouples.
The temperature range may be a preset temperature range. The number of core outlet thermocouples whose temperature values are within the temperature interval may be the number of core outlet thermocouples whose temperature values of the core outlet detected by the core outlet thermocouples are within a preset temperature range. The number of available core outlet thermocouples may be the number of core outlet thermocouples that can accurately detect the core outlet thermocouple temperature.
Specifically, the temperature interval is acquired, and the acquisition mode may be user input or mouse selection, etc. And counting the number of the thermocouples at the reactor core outlet with the temperature value in the temperature interval, obtaining the number of the thermocouples at the reactor core outlet, and determining the thermocouple detection ratio according to the ratio of the number of the thermocouples at the reactor core outlet to the number of the thermocouples at the reactor core outlet.
In one example, the acquisition temperature interval is [650 ℃,1093 ℃ ]; acquiring the number 1 of core outlet thermocouples with temperature values within a temperature interval; obtaining the number of available core outlet thermocouples as 10; and determining that the thermocouple detection ratio is 0.1 according to the ratio of the number of the core outlet thermocouples to the number of the available core outlet thermocouples.
The number of the thermocouples at the reactor core outlet with the temperature value in the temperature interval is obtained through obtaining the temperature interval, the number of the thermocouples at the reactor core outlet is obtained, the thermocouple detection proportion is determined according to the number of the thermocouples at the reactor core outlet and the number of the thermocouples at the reactor core outlet, the thermocouples at the reactor core outlet can be classified according to the temperature interval, and the accuracy of data processing is improved.
Optionally, for each nuclear power unit spraying mode, according to the radiation detection dose rate and the thermocouple detection number in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode, obtaining the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode, and determining core damage information corresponding to the nuclear power unit spraying mode, including: aiming at each nuclear power unit spraying mode, acquiring a current detection type and a current detection dosage rate corresponding to the current detection type; aiming at each nuclear power unit spraying mode, determining a core damage type, a core damage proportion and a damage offset corresponding to the nuclear power unit spraying mode according to the current detection type, the current detection dosage rate corresponding to the current detection type and the radiation detection dosage rate and thermocouple detection proportion in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode; and determining core damage information corresponding to the nuclear power unit spraying modes according to the core damage types, the core damage proportion and the damage offset corresponding to the nuclear power unit spraying modes aiming at the nuclear power unit spraying modes.
The current detection type may be a core damage type to be detected currently. The current detection dose rate may be a radiation detection dose rate within the containment vessel that is currently detected in real time. The damage offset may be an offset of the core damage ratio result from the thermocouple detection ratio.
Specifically, the in-containment radiation monitor dose rate (CRM) includes a containment radiation level CRM2 corresponding to 1% fuel superheat, a containment radiation level CRM3 corresponding to 100% cladding damage, and a containment radiation level CRM4 corresponding to 100% fuel superheat. Aiming at the spraying mode of each nuclear power unit, the current detection type is cladding damage and the current detection dosage rate CRMa corresponding to the current detection type is obtained. Through CRMa and CRM2 comparison, if CRMa is greater than CRM2, the ratio of CRMa to CRM3 is the core damage ratio G1 corresponding to the nuclear power unit spray mode. And obtaining the absolute value of the ratio of the difference between G1 and RD1 to G1 of the thermocouple detection ratio as the damage offset. And determining core damage information corresponding to the nuclear power unit spraying modes according to the core damage types, the core damage proportion and the damage offset corresponding to the nuclear power unit spraying modes aiming at the nuclear power unit spraying modes. Aiming at the spraying mode of each nuclear power unit, the current detection type is fuel overheating and the current detection dosage rate CRMb corresponding to the current detection type is obtained. Through CRMb and CRM2 comparison, if CRMb is greater than CRM2, the ratio of CRMb to CRM4 is the core damage ratio G2 corresponding to the nuclear power unit spray mode. And obtaining the absolute value of the ratio of the difference between G2 and RD2 and G2 of the thermocouple detection ratio as the damage offset. And determining core damage information corresponding to the nuclear power unit spraying modes according to the core damage types, the core damage proportion and the damage offset corresponding to the nuclear power unit spraying modes aiming at the nuclear power unit spraying modes.
In one example, the containment radiation level CRM2 for a 1% fuel superheat is 10Gy/hr and the containment radiation level CRM4 for a 100% fuel superheat is 1000Gy/hr. Aiming at the spraying mode of each nuclear power unit, the current detection type is fuel overheating and the current detection dosage rate CRMb corresponding to the current detection type is 20Gy/hr. Through the comparison of CRM0 and CRM2, CRMb is greater than CRM2, and then the ratio of CRM0 to CRM4 is the core damage ratio G2 corresponding to the nuclear power unit spraying mode. The absolute value of the ratio of the difference between G2 and RD2 to G2 was obtained as the damage offset, with the thermocouple detection ratio RD2 being 0.05. And determining core damage information corresponding to the nuclear power unit spraying modes according to the core damage types, the core damage proportion and the damage offset corresponding to the nuclear power unit spraying modes aiming at the nuclear power unit spraying modes.
The core damage type, the core damage proportion and the damage offset corresponding to the nuclear power unit spraying mode are determined according to the current detection type, the current detection dosage rate corresponding to the current detection type and the radiation detection dosage rate and the thermocouple detection proportion in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode, and the accuracy of obtaining the damage information can be judged according to the damage offset.
Example two
Fig. 2 is a flowchart of a core damage information acquisition method according to a second embodiment of the present invention. On the basis of the embodiment, the core damage information acquisition operation is optimized and improved.
Further, the spraying mode of at least one nuclear power unit for acquiring the nuclear power unit is thinned into the type of a spraying device for acquiring the nuclear power unit; acquiring a spraying attribute value of the type of the spraying device according to the type of the spraying device; and (3) arranging and combining the type of the spraying device and the spraying attribute value, and determining at least one nuclear power unit spraying mode of the nuclear power unit so as to perfect the operation of obtaining the core damage information.
In the embodiments of the present invention, the descriptions of other embodiments may be referred to in the portions not described in detail.
Referring to fig. 2, the method for detecting dielectric loss of a current transformer includes:
s201, acquiring the type of a spraying device of the nuclear power unit.
Wherein the spray device type may be a spray device type. Types of spray devices include passive containment cooling devices and containment spray devices. The passive containment cooling device can be a huge water tank, a water outlet distributor, a pipeline and other facilities positioned above the containment, when the containment pressure reaches a corresponding high pressure setting value or is triggered manually, water in the water tank flows out by gravity, water films are evaporated on the outer wall of the steel containment, and air flows along a natural convection passive belt of an air flow channel in an inner region of the circular corridor to form a special safety facility with internal heat and strong inside the containment. The containment spray system is a system for reducing peak pressure and temperature within the containment after a loss of water event and a main steam line break event within the containment to prevent containment overpressure.
Specifically, the type of a spraying device of the nuclear power unit is obtained. The acquisition mode can be user input or mouse selection, etc.
In one example, the types of spray devices used to select and access the nuclear power unit via a mouse are passive containment cooling devices and containment spray devices.
S202, acquiring a spraying attribute value of the type of the spraying device according to the type of the spraying device.
The spraying attribute value is the running state of the spraying device corresponding to the type of the spraying device. The operating state of the spraying device can be on or off.
Specifically, different spray devices may have different operating conditions, and the operating conditions of different spray devices may be different. The spray device types are in one-to-one correspondence with the spray attribute values of the spray device types.
In one example, the types of spray devices that capture a nuclear power unit are passive containment cooling devices and containment spray devices. The spraying attribute value of the passive containment cooling device is started, and the spraying attribute value of the containment spraying device is closed.
S203, arranging and combining the type of the spraying device and the spraying attribute value to determine at least one spraying mode of the nuclear power unit.
Specifically, the spray devices of the nuclear power unit are passive containment cooling devices and containment spray devices. The spray attribute value may be on or off. Arranging and combining the type of the spraying device and the spraying attribute value, and obtaining the arrangement and combination result that the spraying attribute value of the passive containment cooling device is started and the spraying attribute value of the containment spraying device is closed; the spraying attribute value of the passive containment cooling device is closed, and the spraying attribute value of the containment spraying device is started; the spraying attribute value of the passive containment cooling device is started, and the spraying attribute value of the containment spraying device is started; the spraying attribute value of the passive containment cooling device is closed, and the spraying attribute value of the containment spraying device is closed.
In one example, the spray devices of the nuclear power unit are of the passive containment cooling device and containment spray device type. The spray attribute value may be on or off. And (3) arranging and combining the type of the spraying device and the spraying attribute value, wherein the spraying attribute value of the passive containment cooling device is obtained as a result of the arrangement and combination, and the spraying attribute value of the containment spraying device is closed.
S204, at least one detection type and detection proportion corresponding to the spraying mode of each nuclear power unit are obtained according to the spraying mode of each nuclear power unit.
S205, determining at least one detection dosage rate type corresponding to the nuclear power unit spraying mode according to each detection type and detection proportion corresponding to the nuclear power unit spraying mode aiming at each nuclear power unit spraying mode.
S206, aiming at each nuclear power unit spraying mode, acquiring the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode according to each detection dosage rate type corresponding to the nuclear power unit spraying mode.
S207, aiming at each nuclear power unit spraying mode, according to the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode, calculating the radiation detection dosage rate in the containment corresponding to the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode.
S208, obtaining a thermocouple detection ratio.
S209, aiming at each nuclear power unit spraying mode, acquiring a core damage type and a core damage proportion corresponding to the nuclear power unit spraying mode according to the radiation detection dose rate and the thermocouple detection proportion in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode, and determining core damage information corresponding to the nuclear power unit spraying mode.
Optionally, after obtaining the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode according to the radiation detection dose rate and the thermocouple detection number in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode, determining core damage information corresponding to the nuclear power unit spraying mode, the method further includes: judging whether the current detection type is fuel overheat; if the current detection type is fuel overheating, acquiring the current hydrogen concentration; obtaining a hydrogen concentration reference; determining a hydrogen concentration damage proportion and a hydrogen concentration offset according to the current hydrogen concentration and a hydrogen concentration standard; according to the hydrogen concentration damage proportion and the hydrogen concentration offset, determining hydrogen concentration reactor core damage information corresponding to the current detection type when the fuel is overheated; and aiming at each nuclear power unit spraying mode, adjusting core damage information corresponding to the nuclear power unit spraying mode according to the hydrogen concentration core damage information so as to update the core damage information corresponding to the nuclear power unit spraying mode.
Wherein the current hydrogen concentration may be the hydrogen concentration within the containment currently detected. The hydrogen concentration reference may be a preset maximum value of the hydrogen concentration within the containment vessel. The hydrogen concentration damage ratio may be a ratio of the current hydrogen concentration to the 100% fuel superheated hydrogen concentration. The hydrogen concentration offset may be the accuracy of the hydrogen concentration damage ratio calculation. The hydrogen concentration core damage information may be data of hydrogen concentration damage ratio and hydrogen concentration offset composition.
Specifically, whether the current detection type is fuel overheat is determined; if the current detection type is fuel overheating, the current hydrogen concentration is obtained. The hydrogen concentration reference is obtained in a manner that is obtained according to industry prior knowledge. And if the current hydrogen concentration is greater than the hydrogen concentration standard, determining the hydrogen concentration damage proportion according to the ratio of the current hydrogen concentration to the hydrogen concentration standard. The in-containment radiation monitor dose rate (CRM) includes a containment radiation level CRM2 corresponding to a 1% fuel superheat and a containment radiation level CRM4 corresponding to a 100% fuel superheat. Aiming at the spraying mode of each nuclear power unit, the current detection type is fuel overheating and the current detection dosage rate CRMb corresponding to the current detection type is obtained. Through CRMb and CRM2 comparison, if CRMb is greater than CRM2, the ratio of CRMb to CRM4 is the core damage ratio G2 corresponding to the nuclear power unit spray mode. And determining the hydrogen concentration offset according to the ratio of the difference between the hydrogen concentration damage proportion and G2 to G2, so as to determine the corresponding hydrogen concentration reactor core damage information when the current detection type is fuel overheat. And adjusting the core damage information corresponding to the nuclear power unit spraying mode according to the hydrogen concentration core damage information aiming at each nuclear power unit spraying mode, and if the core damage information corresponding to the existing nuclear power unit spraying mode is different from the hydrogen concentration core damage information, updating the core damage information corresponding to the nuclear power unit spraying mode.
In one example, the current detection type is determined to be fuel overheating, and the current hydrogen concentration is obtained to be 10%. The hydrogen concentration reference was obtained at 5%. The current hydrogen concentration is larger than the hydrogen concentration standard, and the hydrogen concentration damage proportion is determined to be 20% according to the ratio of the current hydrogen concentration to the hydrogen concentration standard. The core damage ratio G2 corresponding to the nuclear power unit spraying mode is 30%. And determining that the hydrogen concentration offset is 33% according to the ratio of the difference between the hydrogen concentration damage proportion and G2 to G2, so as to determine that the current detection type is hydrogen concentration core damage information corresponding to the overheat of the fuel. The core damage information corresponding to the existing nuclear power unit spraying mode is different from the hydrogen concentration core damage information, and the core damage information corresponding to the nuclear power unit spraying mode is updated.
In the embodiment of the invention, the spray device type and the spray attribute value are arranged and combined to determine at least one nuclear power unit spray mode of the nuclear power unit, so that the number of radiation photons corresponding to different nuclear power unit spray modes can be calculated according to different nuclear power unit spray modes, the dose rate of each containment under different nuclear power unit spray modes is calculated, and the diversity of damage information acquisition is improved.
A nuclear power unit comprising: and the passive nuclear power unit.
The passive nuclear power unit can be a nuclear power unit which does not depend on traditional energy supply, does not need fuel consumption or external energy input, can operate automatically without external energy or manual intervention, and can ensure safe operation of the nuclear power station by a unique mechanism. The efficiency and feasibility of the cooling system can be improved, so that the cooling system can better cope with emergency situations and provide a more reliable cooling effect.
In one example, the passive nuclear power unit may automatically depressurize after core damage, for which high and low pressure sprays may not be used.
The nuclear power unit can be an passive nuclear power unit, and can analyze the damage information of the reactor core according to the operation characteristics of the passive nuclear power unit, so that the accuracy of obtaining the damage information of the reactor core is improved.
Example III
Fig. 3 is a schematic structural diagram of a core damage information obtaining apparatus according to a third embodiment of the present invention. The embodiment of the invention is applicable to the situation of core damage information acquisition, the device can execute a core damage information acquisition method, the device can be realized in a hardware and/or software mode, and the device can be configured in core damage information acquisition equipment.
Referring to the core damage information acquisition apparatus shown in fig. 3, it includes: a spray pattern acquisition module 301, a detection information acquisition module 302, a dose type determination module 303, a photon number acquisition module 304, a dose rate calculation module 305, a thermocouple number acquisition module 306, and a damage information determination module 307, wherein,
The spraying mode acquisition module is used for acquiring at least one spraying mode of the nuclear power unit;
The detection information acquisition module is used for acquiring at least one detection type and detection proportion corresponding to the nuclear power unit spraying modes aiming at the nuclear power unit spraying modes;
The dose type determining module is used for determining at least one detection dose rate type corresponding to the nuclear power unit spraying mode according to each detection type and detection proportion corresponding to the nuclear power unit spraying mode aiming at each nuclear power unit spraying mode;
The photon number acquisition module is used for acquiring the radiation photon number in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode according to each detection dosage rate type corresponding to the nuclear power unit spraying mode;
The dose rate calculation module is used for calculating the radiation detection dose rate in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode according to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode;
the thermocouple number acquisition module is used for acquiring thermocouple detection proportion;
The damage information determining module is used for obtaining the core damage type and the core damage proportion corresponding to the nuclear power unit spraying mode according to the radiation detection dose rate and the thermocouple detection proportion in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode, and determining the core damage information corresponding to the nuclear power unit spraying mode.
According to the technical scheme, at least one nuclear power unit spraying mode of the nuclear power unit is obtained, at least one detection type and detection proportion corresponding to the nuclear power unit spraying mode are obtained for each nuclear power unit spraying mode, at least one detection dosage rate type corresponding to the nuclear power unit spraying mode is determined, the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode is obtained, the radiation detection dosage rate in the containment shell corresponding to the number of radiation photons in each spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode is calculated, the core damage type and core damage proportion corresponding to the nuclear power unit spraying mode are obtained in combination with the thermocouple detection number, core damage information corresponding to the nuclear power unit spraying mode is determined, core damage information corresponding to different spraying modes is obtained through different spraying modes of the nuclear power unit, the problem that core damage information corresponding to different spraying modes is obtained through the same mode is solved, and the core damage information obtaining accuracy is low is improved.
Optionally, the spraying manner obtaining module 301 includes:
The device type acquisition unit is used for acquiring the type of the spraying device of the nuclear power unit;
the attribute acquisition unit is used for acquiring a spraying attribute value of the type of the spraying device according to the type of the spraying device;
the spraying mode determining unit is used for arranging and combining the type of the spraying device and the spraying attribute value to determine at least one spraying mode of the nuclear power unit.
Optionally, the photon number acquisition module 304 is specifically configured to:
Aiming at each nuclear power unit spraying mode, according to each detection dosage rate type corresponding to the nuclear power unit spraying mode, photon removal quantity corresponding to each detection dosage rate type corresponding to the kernel motor unit spraying mode in the spraying time period is obtained;
Aiming at each nuclear power unit spraying mode, acquiring a radiation source type corresponding to the nuclear power unit spraying mode, a radiation source intensity corresponding to the radiation source type and a radiation detection distance;
Aiming at each nuclear power unit spraying mode, according to the strong radiation source corresponding to the radiation source type corresponding to the nuclear power unit spraying mode, the radiation detection distance and the photon removal quantity corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode, the radiation photon number in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode is obtained.
Optionally, the thermocouple number acquisition module 306 is specifically configured to:
Acquiring a temperature interval;
Acquiring the number of thermocouples at the reactor core outlet, the temperature value of which is within a temperature interval;
acquiring the number of available core outlet thermocouples;
and determining the thermocouple detection number according to the number of the core outlet thermocouples and the number of the available core outlet thermocouples.
Optionally, the damage information determining module 307 is specifically configured to:
aiming at each nuclear power unit spraying mode, acquiring a current detection type and a current detection dosage rate corresponding to the current detection type;
Aiming at each nuclear power unit spraying mode, determining a core damage type, a core damage proportion and a damage offset corresponding to the nuclear power unit spraying mode according to the current detection type, the current detection dosage rate corresponding to the current detection type and the radiation detection dosage rate and thermocouple detection proportion in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode;
and determining core damage information corresponding to the nuclear power unit spraying modes according to the core damage types, the core damage proportion and the damage offset corresponding to the nuclear power unit spraying modes aiming at the nuclear power unit spraying modes.
Optionally, the core damage information obtaining device further includes:
the information judging module is used for judging whether the current detection type is fuel overheat;
The hydrogen concentration acquisition module is used for acquiring the current hydrogen concentration if the current detection type is that the fuel is overheated;
a reference acquisition module for acquiring a hydrogen concentration reference;
the offset data acquisition module is used for determining a hydrogen concentration damage proportion and a hydrogen concentration offset according to the current hydrogen concentration and a hydrogen concentration reference;
The hydrogen concentration information acquisition module is used for determining hydrogen concentration reactor core damage information corresponding to the current detection type when the fuel is overheated according to the hydrogen concentration damage proportion and the hydrogen concentration offset;
The information updating module is used for adjusting the core damage information corresponding to the nuclear power unit spraying mode according to the hydrogen concentration core damage information aiming at each nuclear power unit spraying mode so as to update the core damage information corresponding to the nuclear power unit spraying mode.
Optionally, the nuclear power unit includes: and the passive nuclear power unit.
The reactor core damage information acquisition device provided by the embodiment of the invention can execute the reactor core damage information acquisition method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the reactor core damage information acquisition method.
Example IV
Fig. 4 shows a schematic structural diagram of a core damage information acquisition apparatus 400 that may be used to implement an embodiment of the present invention.
As shown in fig. 4, the core damage information acquisition apparatus 400 includes at least one processor 401, and a memory communicatively connected to the at least one processor 401, such as a Read Only Memory (ROM) 402, a Random Access Memory (RAM) 403, etc., in which a computer program executable by the at least one processor is stored, and the processor 401 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 402 or the computer program loaded from the storage unit 408 into the Random Access Memory (RAM) 403. In the RAM403, various programs and data required for the operation of the core damage information acquisition apparatus 400 may also be stored. The processor 401, the ROM 402, and the RAM403 are connected to each other by a bus 404. An input/output (I/O) interface 405 is also connected to bus 404.
A plurality of components in the core damage information acquisition apparatus 400 are connected to the I/O interface 405, including: an input unit 406 such as a keyboard, a mouse, etc.; an output unit 407 such as various types of displays, speakers, and the like; a storage unit 408, such as a magnetic disk, optical disk, etc.; and a communication unit 409 such as a network card, modem, wireless communication transceiver, etc. The communication unit 409 allows the core damage information acquisition device 400 to exchange information/data with other devices through a computer network such as the internet and/or various telecommunication networks.
Processor 401 may be a variety of general purpose and/or special purpose processing components with processing and computing capabilities. Some examples of processor 401 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 401 performs the various methods and processes described above, such as the core damage information acquisition method.
In some embodiments, the core damage information acquisition method may be implemented as a computer program that is tangibly embodied on a computer-readable storage medium, such as the storage unit 408. In some embodiments, part or all of the computer program may be loaded and/or installed onto the core damage information acquisition device 400 via the ROM 402 and/or the communication unit 409. When the computer program is loaded into RAM 403 and executed by processor 401, one or more steps of the core damage information acquisition method described above may be performed. Alternatively, in other embodiments, the processor 401 may be configured to perform the core damage information acquisition method in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above can be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), complex Programmable Logic Devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described herein may be implemented on a core damage information acquisition device having: a display device (e.g., a CR first (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the core damage information acquisition device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The Server can be a cloud Server, also called a cloud computing Server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS (virtual private Server) service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for obtaining core damage information, the method comprising:
acquiring at least one nuclear power unit spraying mode of the nuclear power unit;
For each nuclear power unit spraying mode, at least one detection type and detection proportion corresponding to the nuclear power unit spraying mode are obtained;
For each nuclear power unit spraying mode, determining at least one detection dosage rate type corresponding to the nuclear power unit spraying mode according to each detection type and detection proportion corresponding to the nuclear power unit spraying mode;
Aiming at each nuclear power unit spraying mode, acquiring the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode according to each detection dosage rate type corresponding to the nuclear power unit spraying mode;
Aiming at each nuclear power unit spraying mode, according to the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode, calculating the radiation detection dosage rate in the containment corresponding to the number of radiation photons in the spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode;
obtaining a thermocouple detection proportion;
and aiming at each nuclear power unit spraying mode, acquiring a core damage type and a core damage proportion corresponding to the nuclear power unit spraying mode according to the radiation detection dose rate in the containment corresponding to the radiation photon number and the thermocouple detection proportion in a spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode, and determining core damage information corresponding to the nuclear power unit spraying mode.
2. The method of claim 1, wherein obtaining at least one nuclear power unit spray pattern for a nuclear power unit comprises:
Acquiring the type of a spraying device of a nuclear power unit;
acquiring a spraying attribute value of the type of the spraying device according to the type of the spraying device;
and arranging and combining the type of the spraying device and the spraying attribute values to determine at least one spraying mode of the nuclear power unit.
3. The method of claim 1, wherein for each of the nuclear power unit spray patterns, according to each of the detected dose rate types corresponding to the nuclear power unit spray patterns, obtaining the number of radiation photons in the spray time period corresponding to each of the detected dose rate types corresponding to the nuclear power unit spray patterns comprises:
Aiming at each nuclear power unit spraying mode, according to each detection dosage rate type corresponding to the nuclear power unit spraying mode, photon removal quantity corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode in the spraying time period is obtained;
Aiming at each nuclear power unit spraying mode, acquiring a radiation source type corresponding to the nuclear power unit spraying mode, a radiation source intensity corresponding to the radiation source type and a radiation detection distance;
And aiming at each nuclear power unit spraying mode, acquiring the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode according to the intensity of the radiation source corresponding to the radiation source type corresponding to the nuclear power unit spraying mode, the radiation detection distance and the photon removal number corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode.
4. The method of claim 1, wherein obtaining a thermocouple detection ratio comprises:
Acquiring a temperature interval;
acquiring the number of core outlet thermocouples with temperature values within the temperature interval;
acquiring the number of available core outlet thermocouples;
and determining a thermocouple detection proportion according to the number of the core outlet thermocouples and the number of the available core outlet thermocouples.
5. The method of claim 4, wherein for each of the nuclear power unit spray patterns, obtaining core damage type and core damage proportion corresponding to the nuclear power unit spray pattern according to the radiation detection dose rate in the containment corresponding to the number of radiation photons and the thermocouple detection number in the spray period corresponding to each detection dose rate type corresponding to the nuclear power unit spray pattern, and determining core damage information corresponding to the nuclear power unit spray pattern comprises:
aiming at each nuclear power unit spraying mode, acquiring a current detection type and a current detection dosage rate corresponding to the current detection type;
For each nuclear power unit spraying mode, determining a core damage type, a core damage proportion and a damage offset corresponding to the nuclear power unit spraying mode according to the current detection type, the current detection dosage rate corresponding to the current detection type, the radiation detection dosage rate in the containment corresponding to the number of radiation photons in a spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode and the thermocouple detection proportion;
And determining core damage information corresponding to the nuclear power unit spraying modes according to the core damage types, the core damage proportion and the damage offset corresponding to the nuclear power unit spraying modes aiming at the nuclear power unit spraying modes.
6. The method of claim 1, wherein after obtaining, for each of the nuclear power unit spray patterns, core damage information corresponding to the nuclear power unit spray pattern according to the in-containment radiation detection dose rate and the thermocouple detection number corresponding to the number of radiation photons in a spray period corresponding to each detection dose rate type corresponding to the nuclear power unit spray pattern, the core damage type and the core damage ratio corresponding to the nuclear power unit spray pattern, further comprising:
judging whether the current detection type is fuel overheat;
if the current detection type is fuel overheating, acquiring the current hydrogen concentration;
Obtaining a hydrogen concentration reference;
determining a hydrogen concentration damage proportion and a hydrogen concentration offset according to the current hydrogen concentration and the hydrogen concentration standard;
According to the hydrogen concentration damage proportion and the hydrogen concentration offset, determining hydrogen concentration reactor core damage information corresponding to the current detection type when the fuel is overheated;
and aiming at each nuclear power unit spraying mode, adjusting core damage information corresponding to the nuclear power unit spraying mode according to the hydrogen concentration core damage information so as to update the core damage information corresponding to the nuclear power unit spraying mode.
7. The method of claim 1, wherein the nuclear power unit comprises: and the passive nuclear power unit.
8. A core damage information acquisition device, the device comprising:
The spraying mode acquisition module is used for acquiring at least one spraying mode of the nuclear power unit;
the detection information acquisition module is used for acquiring at least one detection type and detection proportion corresponding to the nuclear power unit spraying modes aiming at each nuclear power unit spraying mode;
the dose type determining module is used for determining at least one detection dose rate type corresponding to the nuclear power unit spraying mode according to each detection type and detection proportion corresponding to the nuclear power unit spraying mode;
The photon number acquisition module is used for acquiring the radiation photon number in a spraying time period corresponding to each detection dosage rate type corresponding to the nuclear power unit spraying mode according to each detection dosage rate type corresponding to the nuclear power unit spraying mode;
The dose rate calculation module is used for calculating the radiation detection dose rate in the containment corresponding to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode according to the radiation photon number in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying mode;
The thermocouple number acquisition module is used for acquiring the thermocouple detection number;
The damage information determining module is used for obtaining core damage types and core damage proportions corresponding to the nuclear power unit spraying modes according to the radiation detection dose rate in the containment corresponding to the number of radiation photons in the spraying time period corresponding to each detection dose rate type corresponding to the nuclear power unit spraying modes and the thermocouple detection number, and determining core damage information corresponding to the nuclear power unit spraying modes.
9. A core damage information acquisition apparatus, characterized by comprising:
at least one processor; and
A memory communicatively coupled to the at least one processor; wherein,
The memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the core damage information acquisition method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to execute the core damage information acquisition method of any one of claims 1-7.
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| CN202410200791.6A CN118053603A (en) | 2024-02-23 | 2024-02-23 | Method, device, equipment and medium for acquiring core damage information |
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