Method and apparatus for shutdown of a marine nuclear power plant

Abstract

The application relates to a shutdown processing method and device of a marine nuclear power device. The method comprises the following steps: acquiring posture information sets and motion information sets of the marine nuclear power device collected by at least two same detection devices; wherein the at least two same detection devices are configured based on the working condition of the sea where the marine nuclear power device is located, the posture information sets comprise at least two posture information, each posture information comprises a swing angle and / or a tilt angle, the motion information sets comprise at least two motion information, and each motion information comprises an acceleration; and determining whether to perform shutdown processing on the marine nuclear power device according to the comparison result of a set angle threshold value and the posture information in the posture information sets and the comparison result of a set acceleration threshold value and the motion information in the motion information sets. The method can well judge the safety influence of the sea working condition on the marine nuclear power device, and improves the safety of the marine nuclear power device.

Description

Methods and apparatus for decommissioning offshore nuclear power plants Technical Field

[0001] This application relates to the field of nuclear power instrumentation and control technology, and in particular to a method and apparatus for shutting down a marine nuclear power plant. Background Technology

[0002] To provide a safe and efficient energy supply to remote islands, offshore nuclear power plants are being established. These marine nuclear power plants are nuclear power units installed on offshore nuclear power platforms; they are mobile, small-scale nuclear power plants at sea, organically combining small nuclear reactors with shipbuilding engineering. To ensure the safe operation of offshore nuclear power plants, reactor shutdown protection systems are required.

[0003] However, existing technologies typically apply reactor shutdown protection systems, which are used in land-based nuclear power plants, directly to marine nuclear power plants. This approach cannot guarantee the safe operation of marine nuclear power plants in the complex and ever-changing marine environment. Summary of the Invention

[0004] Therefore, it is necessary to provide a method and apparatus for shutting down offshore nuclear power plants that can improve the safety of offshore nuclear power plants, addressing the aforementioned technical problems.

[0005] In a first aspect, this application provides a method for shutting down a marine nuclear power plant, executed by a shutdown protection system, the method comprising:

[0006] Acquire attitude information set and motion information set of marine nuclear power plant collected by at least two identical detection devices; wherein, the at least two identical detection devices are configured based on the operating conditions of the marine nuclear power plant in the ocean, the attitude information set includes at least two attitude information, each attitude information including a sway angle and / or tilt angle, and the motion information set includes at least two motion information, each motion information including acceleration.

[0007] Based on the comparison results between the set angle threshold and the attitude information set, and the comparison results between the set acceleration threshold and the motion information set, it is determined whether to shut down the offshore nuclear power plant.

[0008] In one embodiment, based on the comparison results of a set angle threshold and attitude information set, and the comparison results of a set acceleration threshold and motion information set, it is determined whether to shut down the marine nuclear power plant, including:

[0009] The first output signal is determined based on the comparison between the set swing angle threshold and the swing angle of the attitude information set.

[0010] The second output signal is determined based on the comparison between the set tilt angle threshold and the tilt angle of the attitude information set.

[0011] The third output signal is determined based on the comparison between the set acceleration threshold and the acceleration of the motion information set.

[0012] Based on the first, second, and third output signals, determine whether to shut down the offshore nuclear power plant.

[0013] In one embodiment, a first output signal is determined based on a comparison between a set sway angle threshold and the sway angle in the attitude information set, including:

[0014] Each sway angle in the attitude information set is compared with a set sway angle threshold; wherein the set sway angle threshold includes a first set sway angle threshold, a second set sway angle threshold greater than the first set sway angle threshold, and a third set sway angle threshold greater than the second set sway angle threshold;

[0015] Based on the comparison results, determine the first number of sway angles in the attitude information set that are equal to or greater than the first set sway angle threshold, determine the second number of sway angles in the attitude information set that are equal to or greater than the second set sway angle threshold, and determine whether there are sway angles in the attitude information set that are equal to or greater than the third set sway angle threshold.

[0016] The first output signal is determined based on the first quantity, the second quantity, the total number of sway angles in the attitude information set, and whether there is a sway angle in the attitude information set that is equal to or greater than the third set sway angle threshold.

[0017] In one embodiment, a first output signal is determined based on a first quantity, a second quantity, the total number of sway angles in the attitude information set, and sway angles in the attitude information set that are equal to or greater than a third set sway angle threshold, including:

[0018] If there is a swing angle in the attitude information set that is equal to or greater than the third set swing angle threshold, then the first automatic stop signal is output.

[0019] If the ratio of the second quantity to the total number of sway angles in the attitude information set is equal to or greater than the set ratio, then the first manual stop signal is output.

[0020] If the ratio of the first quantity to the total number of sway angles in the attitude information set is equal to or greater than a set ratio, then the first warning signal is output.

[0021] In one embodiment, a second output signal is determined based on a comparison between a set tilt angle threshold and the tilt angle of the attitude information set, including:

[0022] Each tilt angle in the attitude information set is compared with a set tilt angle threshold; wherein the set tilt angle threshold includes a first set tilt angle threshold, a second set tilt angle threshold greater than the first set tilt angle threshold, and a third set tilt angle threshold greater than the second set tilt angle threshold.

[0023] Based on the comparison results, a third number of tilt angles in the attitude information set that are equal to or greater than the first set tilt angle threshold are determined, a fourth number of tilt angles in the attitude information set that are equal to or greater than the second set tilt angle threshold are determined, and it is determined whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold.

[0024] The second output signal is determined based on the third quantity, the fourth quantity, the total number of tilt angles in the attitude information set, and whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold.

[0025] In one embodiment, a third output signal is determined based on a comparison between a set acceleration threshold and the acceleration of the motion information set, including:

[0026] Each acceleration in the motion information set is compared with a set acceleration threshold.

[0027] Based on the comparison results, determine whether there is an acceleration in the motion information set that is equal to or greater than the acceleration threshold;

[0028] The third output signal is determined based on whether there is an acceleration equal to or greater than the set acceleration threshold in the motion information set.

[0029] In one embodiment, a third output signal is determined based on whether there is an acceleration equal to or greater than a set acceleration threshold in the motion information set, including:

[0030] If there is an acceleration equal to or greater than the set acceleration threshold in the motion information set, then the third manual shutdown signal and the third early warning signal will be output.

[0031] In one embodiment, the types and numbers of sensors included in each detection device are the same; the types of sensors included in each detection device are determined based on the impact of various marine conditions on offshore nuclear power plants.

[0032] Secondly, this application also provides a shutdown processing device based on a marine nuclear power plant. Configured in a shutdown protection system, the device includes:

[0033] The information acquisition module is used to acquire attitude information sets and motion information sets of marine nuclear power plants collected by at least two identical detection devices; wherein, the attitude information set includes at least two attitude information sets, each attitude information set including a sway angle and / or tilt angle, and the motion information set includes at least two motion information sets, each motion information set including acceleration.

[0034] The shutdown processing module is used to determine whether to shut down the marine nuclear power plant based on the comparison results of the set angle threshold and the attitude information set, and the comparison results of the set acceleration threshold and the motion information set.

[0035] Thirdly, this application also provides a computer device. The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to perform the following steps:

[0036] Acquire attitude information set and motion information set of marine nuclear power plant collected by at least two identical detection devices; wherein, the at least two identical detection devices are configured based on the operating conditions of the marine nuclear power plant in the ocean, the attitude information set includes at least two attitude information, each attitude information including a sway angle and / or tilt angle, and the motion information set includes at least two motion information, each motion information including acceleration.

[0037] Based on the comparison results between the set angle threshold and the attitude information set, and the comparison results between the set acceleration threshold and the motion information set, it is determined whether to shut down the offshore nuclear power plant.

[0038] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, performs the following steps:

[0039] Acquire attitude information set and motion information set of marine nuclear power plant collected by at least two identical detection devices; wherein, the at least two identical detection devices are configured based on the operating conditions of the marine nuclear power plant in the ocean, the attitude information set includes at least two attitude information, each attitude information including a sway angle and / or tilt angle, and the motion information set includes at least two motion information, each motion information including acceleration.

[0040] Based on the comparison results between the set angle threshold and the attitude information set, and the comparison results between the set acceleration threshold and the motion information set, it is determined whether to shut down the offshore nuclear power plant.

[0041] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, performs the following steps:

[0042] Acquire attitude information set and motion information set of marine nuclear power plant collected by at least two identical detection devices; wherein, the at least two identical detection devices are configured based on the operating conditions of the marine nuclear power plant in the ocean, the attitude information set includes at least two attitude information, each attitude information including a sway angle and / or tilt angle, and the motion information set includes at least two motion information, each motion information including acceleration.

[0043] Based on the comparison results between the set angle threshold and the attitude information set, and the comparison results between the set acceleration threshold and the motion information set, it is determined whether to shut down the offshore nuclear power plant.

[0044] The aforementioned method and apparatus for shutting down offshore nuclear power plants fully consider the impact of marine operating conditions on offshore nuclear power plants. By introducing a detection device, it collects attitude and motion information sets generated by marine operations on offshore nuclear power plants. Based on the attitude and motion information sets collected by the detection device, combined with set angle and acceleration thresholds, it further determines whether to shut down the offshore nuclear power plant. This can effectively solve the safety impact of complex marine environments such as tilting and swaying on offshore nuclear power plants, and improve the safety of offshore nuclear power plants. Attached Figure Description

[0045] Figure 1 is an application environment diagram of a shutdown treatment method for a marine nuclear power plant in one embodiment;

[0046] Figure 2 is a flowchart illustrating a shutdown procedure for a marine nuclear power plant in one embodiment;

[0047] Figure 3 is a schematic diagram of the process for determining whether to shut down a marine nuclear power plant in one embodiment;

[0048] Figure 4 is a flowchart illustrating the determination of the first output signal in one embodiment;

[0049] Figure 5 is a flowchart illustrating the determination of the second output signal in one embodiment;

[0050] Figure 6 is a flowchart illustrating the determination of the third output signal in one embodiment;

[0051] Figure 7 is a flowchart illustrating the shutdown process of a marine nuclear power plant in another embodiment;

[0052] Figure 8 is a structural block diagram of a shutdown treatment device for a marine nuclear power plant in one embodiment;

[0053] Figure 9 is a structural block diagram of a shutdown processing module in one embodiment;

[0054] Figure 10 is an internal structure diagram of a computer device in one embodiment. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0056] The shutdown method for offshore nuclear power plants provided in this application is applied to ensuring the safety of offshore nuclear power plants. The entire shutdown method can be implemented by multiple detection devices in conjunction with a shutdown protection system. For example, it can be applied to the application environment shown in Figure 1, where the detection system 102 includes multiple identical detection devices. Each detection device can collect the attitude and motion information of the offshore nuclear power plant and transmit the collected attitude and motion information to the shutdown protection system 104 via a network. The shutdown protection system 104 determines whether to shut down the offshore nuclear power plant based on the attitude and motion information collected by the multiple detection devices, combined with set angle and acceleration thresholds. Furthermore, if the shutdown protection system 104 determines that shutdown is necessary, it can also control the rod control and position system 106 to perform shutdown. The detection devices can include various types of sensors. The shutdown protection system 104 can be a shutdown protection system or a diversified protection system. Furthermore, the shutdown protection system 104 can be integrated into a standalone server or a server cluster composed of multiple servers.

[0057] In one embodiment, as shown in FIG2, a method for shutting down a marine nuclear power plant is provided. Taking the application of this method to the shutdown protection system 104 in FIG1 as an example, the method includes the following steps:

[0058] S201, acquire the attitude and motion information sets of marine nuclear power plants collected by at least two identical detection devices.

[0059] In this embodiment, at least two identical detection devices are configured based on the operating conditions of the marine environment where the offshore nuclear power plant is located, and each detection device includes sensors. If three detection devices are used, it can ensure that even if some detection devices malfunction, the detection of marine operating conditions will not be affected, while saving costs. Optionally, the types and numbers of sensors included in each detection device are the same; the types of sensors included in each detection device are determined based on the degree of influence of various marine operating conditions on the offshore nuclear power plant.

[0060] Optionally, the impact of various ocean conditions on offshore nuclear power plants can be statistically analyzed. Based on the magnitude of the impact, it can be determined that rolling, tilting, and impact have the greatest impact on offshore nuclear power plants. Further, for the three ocean conditions of rolling, tilting, and impact, the sensor type can be determined. Optionally, the impact of ocean rolling and tilting on offshore nuclear power plants can be measured by angle, and the impact of ocean impact can be measured by acceleration. Therefore, sensors with angle and acceleration measurement capabilities can be selected. Multiple detection devices are configured based on the selected sensor types.

[0061] Furthermore, the types and numbers of sensors included in each detection device are set to be identical, and the clocks of each detection device are synchronized, ensuring that the time for each detection device to collect the sway angle, tilt angle, and acceleration is consistent. In this embodiment, by standardizing the types and numbers of sensors in each detection device and ensuring that the time for each detection device to collect the sway angle, tilt angle, and acceleration is consistent, the ability to determine whether a shutdown of the offshore nuclear power plant is necessary is enhanced, thereby improving the safety of the offshore nuclear power plant.

[0062] Optionally, each detection device can collect attitude and motion information of the marine nuclear power plant and send it to the shutdown protection system. The shutdown protection system can then acquire the attitude and motion information collected by each detection device, i.e., an attitude information set and a motion information set. The attitude information set includes at least two attitude information pieces, each including a roll angle and / or tilt angle; the motion information set includes at least two motion information pieces, each including acceleration.

[0063] It is understood that the number of attitude information items included in the attitude information set is less than or equal to the number of detection devices. Optionally, in the event of a failure of one or more detection devices, the number of attitude information items included in the attitude information set is less than the number of detection devices.

[0064] S202, based on the comparison results of the set angle threshold and the attitude information set, and the comparison results of the set acceleration threshold and the motion information set, determine whether to shut down the marine nuclear power plant.

[0065] In this embodiment, the set angle threshold can be determined based on the impact of actual ocean rolling and / or tilting conditions on the marine nuclear power plant; optionally, when the attitude information includes rolling angle and / or tilting angle, the set angle threshold can include setting a rolling angle threshold and / or setting a tilting angle threshold. The set acceleration threshold can be determined based on the impact of actual ocean impact and other conditions on the marine nuclear power plant.

[0066] Nuclear power plant shutdown refers to the process of shutting down the reactor when encountering unsafe factors, in order to achieve a protective effect.

[0067] Specifically, in this embodiment, the attitude information collected by each detection device can be compared with a set angle threshold. For example, the sway angle in each attitude information can be compared with a set sway angle threshold, and / or the tilt angle in each attitude information can be compared with a set tilt angle threshold. Simultaneously, the motion information collected by each detection device can be compared with a set acceleration threshold. Furthermore, the comparison results of all attitude information and the comparison results of motion information are comprehensively considered to ultimately determine whether it is necessary to shut down the offshore nuclear power plant.

[0068] Furthermore, if it is determined that a shutdown of an offshore nuclear power plant is necessary, the rod control system can be used to perform the shutdown procedure.

[0069] The aforementioned method for shutting down offshore nuclear power plants fully considers the impact of marine conditions on these plants, introduces detection devices to collect attitude and motion information sets generated by marine operations, and further determines whether to shut down the offshore nuclear power plant based on the attitude and motion information sets collected by the detection devices, combined with set angle and acceleration thresholds. This method effectively addresses the safety impacts of complex marine environments such as tilting and swaying on offshore nuclear power plants, thereby improving their safety.

[0070] Based on the above embodiments, in one embodiment, as shown in FIG3, S202 is further refined. This may include the following steps:

[0071] S301, determine the first output signal based on the comparison result between the set swing angle threshold and the swing angle of the attitude information set.

[0072] In this embodiment, the first output signal can be a first automatic shutdown signal, a first manual shutdown signal, or a first warning signal.

[0073] Specifically, the sway angle in each attitude information set is modulated to convert it into an analog electrical signal; the amplitude of the analog electrical signal is compared with a set sway angle threshold. Then, based on the comparison result of the sway angles in each attitude information set, the first output signal is determined.

[0074] Furthermore, different comparison results will produce different first output signals. For example, based on the comparison results, if it is determined that the yaw angle in each attitude information is greater than a set yaw angle threshold, a first automatic shutdown signal can be output.

[0075] S302, determine the second output signal based on the comparison result between the set tilt angle threshold and the tilt angle of the attitude information set.

[0076] In this embodiment, the second output signal can be a second automatic shutdown signal, a second manual shutdown signal, or a second early warning signal.

[0077] Specifically, the tilt angle in each attitude information set is modulated to convert the tilt angle into an analog electrical signal; the amplitude of the analog electrical signal is compared with a set tilt angle threshold. Then, based on the comparison results of the tilt angles in each attitude information set, a second output signal is determined.

[0078] Furthermore, different comparison results will produce different second output signals. For example, based on the comparison results, if it is determined that the tilt angle in each attitude information is greater than a set tilt angle threshold, a second automatic shutdown signal can be output.

[0079] S303, determine the third output signal based on the comparison result between the set acceleration threshold and the acceleration of the motion information concentration.

[0080] In this embodiment, the acceleration can be an impact acceleration that is collected within a certain frequency bandwidth; the third output signal can include a third manual shutdown signal and a third early warning signal.

[0081] Specifically, the acceleration in each piece of motion information in the motion information set is modulated to convert the acceleration into an analog electrical signal; the amplitude of the analog electrical signal is compared with a set acceleration threshold. Then, based on the comparison results of the acceleration in each piece of motion information, a third output signal is determined.

[0082] Furthermore, based on different comparison results, it is determined whether to output a third output signal. For example, based on the comparison results, it is determined whether there is an acceleration greater than a set acceleration threshold in each motion information, that is, to output a third manual shutdown signal and a third early warning signal.

[0083] S304 determines whether to shut down the offshore nuclear power plant based on the first, second, and third output signals.

[0084] Specifically, if any one of the first, second, and third output signals is an automatic shutdown signal, the marine nuclear power plant will be automatically shut down. If none of the first, second, and third output signals are automatic shutdown signals, then if any one of the output signals is a manual shutdown signal, the marine nuclear power plant will be manually shut down. If none of the first, second, and third output signals are automatic shutdown signals or manual shutdown signals, then if any one of the output signals is a warning signal, the marine nuclear power plant does not need to be shut down, but a warning signal needs to be issued. If none of the first, second, and third output signals are automatic shutdown signals, manual shutdown signals, or warning signals, then the marine nuclear power plant is currently in a safe state and does not need to be shut down.

[0085] In this embodiment, the safety of the offshore nuclear power plant is greatly improved by considering the three dimensions of impact on the offshore nuclear power plant: swaying, tilting, and impact from the ocean.

[0086] Based on the above embodiments, in one embodiment, as shown in FIG4, S301 is further refined. Specifically, it may include the following steps:

[0087] S401, compare each sway angle in the attitude information set with the set sway angle threshold.

[0088] The setting of the swing angle threshold may include a first setting of the swing angle threshold, a second setting of the swing angle threshold that is greater than the first setting of the swing angle threshold, and a third setting of the swing angle threshold that is greater than the second setting of the swing angle threshold.

[0089] Specifically, for each sway angle in the attitude information set, the sway angle can be compared with the first set sway angle threshold, the second set sway angle threshold, and the third set sway angle threshold.

[0090] S402, based on the comparison results, determine a first number of sway angles in the attitude information set that are equal to or greater than a first set sway angle threshold, determine a second number of sway angles in the attitude information set that are equal to or greater than a second set sway angle threshold, and determine whether there is a sway angle in the attitude information set that is equal to or greater than a third set sway angle threshold.

[0091] Specifically, target sway angles equal to or greater than a first set sway angle threshold are extracted from the attitude information set; if the sway angles cumulatively output by the detection device corresponding to any target sway angle are equal to or greater than the first set sway angle threshold within a certain period of time, and the period of time exceeds the set duration, then the target sway angle is retained; the number of retained target sway angles is taken as the first quantity.

[0092] Extract target sway angles that are equal to or greater than the second set sway angle threshold from the attitude information set; if the sway angles cumulatively output by the detection device corresponding to any target sway angle are equal to or greater than the second set sway angle threshold within a certain period of time, and the period of time exceeds the set duration, then retain the target sway angle; the number of retained target sway angles is taken as the second quantity.

[0093] Furthermore, it is determined whether there is a sway angle in the attitude information that is equal to or greater than the third set sway angle threshold.

[0094] S403, determine the first output signal based on the first quantity, the second quantity, the total number of sway angles in the attitude information set, and whether there is a sway angle in the attitude information set that is equal to or greater than the third set sway angle threshold.

[0095] Specifically, the ratio or difference between the first and second quantities and the total number of sway angles in the attitude information set can be calculated to determine whether there exists a sway angle in the attitude information set that is equal to or greater than a third set sway angle threshold. Further, based on the calculation results, the first output signal can be determined to be a first automatic shutdown signal, a first manual shutdown signal, or a first warning signal.

[0096] Optionally, in one embodiment, if there is a swing angle in the attitude information set that is equal to or greater than a third set swing angle threshold, then a first automatic stop signal is output.

[0097] Specifically, after obtaining the first quantity, the second quantity, and determining whether there exists a swing angle in the attitude information set equal to or greater than a third set swing angle threshold, since the third set swing angle threshold is greater than both the second and first set swing angle thresholds, it is prioritized to determine whether there exists a swing angle in the attitude information set equal to or greater than the third set swing angle threshold. If it is determined that there is a swing angle in the attitude information set equal to or greater than the third set swing angle threshold, a first automatic stop signal is output. Furthermore, at this point, it is not necessary to calculate the ratios of the second quantity and the first quantity to the total number of swing angles in the attitude information set.

[0098] Optionally, if it is determined that there is no sway angle in the attitude information set equal to or greater than the third set sway angle threshold, since the second set sway angle threshold is greater than the first set sway angle threshold, the ratio of the second number to the total number of sway angles in the attitude information set is calculated first. Further, if the ratio of the second number to the total number of sway angles in the attitude information set is equal to or greater than a set ratio, a first manual stop signal is output. Here, the set ratio is a pre-set ratio value, for example... At this point, there is no need to calculate the ratio of the first quantity to the total number of sway angles in the attitude information set.

[0099] Optionally, if the ratio of the second quantity to the total number of sway angles in the attitude information set is less than a set ratio, then the ratio of the first quantity to the total number of sway angles in the attitude information set is calculated. If the ratio of the first quantity to the total number of sway angles in the attitude information set is equal to or greater than the set ratio, then a first warning signal is output.

[0100] Furthermore, if the ratio of the first number to the total number of sway angles in the attitude information set is less than a set ratio, it indicates that the current marine nuclear power plant is in a safe state in the sway dimension, and there is no need to shut down the marine nuclear power plant due to swaying.

[0101] In this embodiment, by introducing three different set swing angle thresholds, the swing angle is fully analyzed to determine the first output signal, which enhances the judgment of the impact of the swing on the offshore nuclear power plant under marine conditions and improves the accuracy of the shutdown treatment of the offshore nuclear power plant.

[0102] In one embodiment, as shown in FIG5, the above-described S302 is further refined. Specifically, it may include the following steps:

[0103] S501 compares each tilt angle in the attitude information set with a set tilt angle threshold.

[0104] The setting of tilt angle thresholds may include a first set tilt angle threshold, a second set tilt angle threshold greater than the first set tilt angle threshold, and a third set tilt angle threshold greater than the second set tilt angle threshold.

[0105] Specifically, for each tilt angle in the attitude information set, the tilt angle can be compared with the first set tilt angle threshold, the second set tilt angle threshold, and the third set tilt angle threshold at the same time.

[0106] S502, based on the comparison results, determine a third number of tilt angles in the attitude information set that are equal to or greater than the first set tilt angle threshold, determine a fourth number of tilt angles in the attitude information set that are equal to or greater than the second set tilt angle threshold, and determine whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold.

[0107] Specifically, target tilt angles that are equal to or greater than the first set tilt angle threshold are extracted from the attitude information set; if the tilt angles cumulatively output by the detection device corresponding to any target tilt angle are equal to or greater than the first set tilt angle threshold within a certain period of time, and the period of time exceeds the set duration, then the target tilt angle is retained; the number of retained target tilt angles is used as the third quantity.

[0108] Extract target tilt angles that are equal to or greater than the second set tilt angle threshold from the attitude information set; if the tilt angles cumulatively output by the detection device corresponding to any target tilt angle are equal to or greater than the second set tilt angle threshold within a certain period of time, and the period of time exceeds the set duration, then retain the target tilt angle; the number of retained target tilt angles is used as the fourth quantity.

[0109] Furthermore, it is determined whether there is a tilt angle in the attitude information that is equal to or greater than the third set tilt angle threshold.

[0110] S503, determine the second output signal based on the third quantity, the fourth quantity, the total number of tilt angles in the attitude information set, and whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold.

[0111] Specifically, the ratio or difference between the third and fourth quantities and the total number of tilt angles in the attitude information set can be calculated to determine whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold. Further, based on the calculation results, the second output signal can be determined to be a second automatic shutdown signal, a second manual shutdown signal, or a second warning signal.

[0112] Optionally, in one implementation, if it is determined that there is a tilt angle in the attitude information set that is equal to or greater than a third set tilt angle threshold, then a second automatic stop signal is output.

[0113] Specifically, after obtaining the third and fourth quantities, and determining whether there exists a tilt angle in the attitude information set equal to or greater than the third set tilt angle threshold, since the third set tilt angle threshold is greater than both the second and first set tilt angle thresholds, it is prioritized to determine whether there is a tilt angle in the attitude information set equal to or greater than the third set tilt angle threshold. If it is determined that there is a tilt angle in the attitude information set equal to or greater than the third set tilt angle threshold, a second automatic shutdown signal is output. Furthermore, at this point, it is not necessary to calculate the ratios of the fourth and third quantities to the total number of tilt angles in the attitude information set.

[0114] Optionally, if it is determined that there is no tilt angle in the attitude information set equal to or greater than the third set tilt angle threshold, since the second set tilt angle threshold is greater than the first set tilt angle threshold, the ratio of the fourth quantity to the total number of tilt angles in the attitude information set is calculated first. The obtained ratio is compared with the set ratio. If the obtained ratio is equal to or greater than the set ratio, a second manual stop signal is output. Furthermore, at this time, it is not necessary to calculate the ratio of the third quantity to the total number of tilt angles in the attitude information set.

[0115] Optionally, if the ratio of the fourth quantity to the total number of tilt angles in the attitude information set is less than a set ratio, then the ratio of the third quantity to the total number of tilt angles in the attitude information set is calculated. The obtained ratio is compared with the set ratio. If the obtained ratio is equal to or greater than the set ratio, then a second warning signal is output.

[0116] Optionally, if the ratio of the third quantity to the total number of tilt angles in the attitude information set is less than a set ratio, it indicates that the current marine nuclear power plant is in a safe state in the tilt dimension, and there is no need to shut down the marine nuclear power plant due to tilt.

[0117] In this embodiment, by introducing three different set tilt angle thresholds, the tilt angle is fully analyzed to determine the second output signal, which enhances the judgment of the tilt effect of marine nuclear power plants on marine operating conditions and improves the accuracy of shutdown treatment of marine nuclear power plants.

[0118] In one embodiment, as shown in FIG6, S303 is further refined. Specifically, it may include the following steps:

[0119] S601 compares each acceleration in the motion information set with a set acceleration threshold.

[0120] Specifically, each acceleration in the motion information set is decomposed into acceleration peaks in the x, y, and z directions in a three-dimensional coordinate system. The acceleration peaks in the three directions are compared with a set acceleration threshold. If the acceleration peak in any of the x, y, or z directions is equal to or greater than the set acceleration threshold, then the acceleration is determined to be equal to or greater than the set acceleration threshold.

[0121] S602, Based on the comparison results, determine whether there is an acceleration in the motion information set that is equal to or greater than the acceleration threshold.

[0122] Specifically, based on the comparison results, it is determined whether there is an acceleration in the motion information set that is equal to or greater than the acceleration threshold.

[0123] S603 determines the third output signal based on whether there is an acceleration equal to or greater than the set acceleration threshold in the motion information set.

[0124] In this embodiment, the third output signal may include a third manual shutdown signal and a third early warning signal.

[0125] Specifically, it determines whether there is an acceleration equal to or greater than a set acceleration threshold in the motion information set. If there is an acceleration equal to or greater than the set acceleration threshold in the motion information set, a third manual shutdown signal and a third warning signal are output; optionally, if there is no acceleration equal to or greater than the set acceleration threshold in the motion information set, it indicates that the current offshore nuclear power plant is in a safe state in terms of impact dimension, and there is no need to shut down the offshore nuclear power plant due to impact factors.

[0126] In this embodiment, the third output signal is determined by identifying whether an acceleration equal to or greater than a set acceleration threshold exists within the motion information set. This enhances the assessment of the impact of marine operating conditions on offshore nuclear power plants and improves the accuracy of shutdown procedures for offshore nuclear power plants.

[0127] In one embodiment, as shown in Figure 7, an optional example of a shutdown process for a marine nuclear power plant is provided. The specific process is as follows:

[0128] S701, acquire at least two identical detection devices for attitude information sets and motion information sets of marine nuclear power plants; the attitude information set includes at least two attitude information sets, each including a sway angle and / or tilt angle, and the motion information set includes at least two motion information sets, each including an acceleration.

[0129] Among them, at least two identical detection devices are configured based on the operating conditions of the marine nuclear power plant.

[0130] S702 compares each sway angle in the attitude information set with a set sway angle threshold.

[0131] The setting of the swing angle threshold includes a first setting of the swing angle threshold, a second setting of the swing angle threshold that is greater than the first setting of the swing angle threshold, and a third setting of the swing angle threshold that is greater than the second setting of the swing angle threshold.

[0132] S703, based on the comparison results, determine a first number of sway angles in the attitude information set that are equal to or greater than a first set sway angle threshold, determine a second number of sway angles in the attitude information set that are equal to or greater than a second set sway angle threshold, and determine whether there is a sway angle in the attitude information set that is equal to or greater than a third set sway angle threshold.

[0133] S704, determine the first output signal based on the first quantity, the second quantity, the total number of sway angles in the attitude information set, and whether there is a sway angle in the attitude information set that is equal to or greater than the third set sway angle threshold.

[0134] If the attitude information set contains a swing angle equal to or greater than the third set swing angle threshold, then the first automatic stop signal is output.

[0135] If the ratio of the second quantity to the total number of sway angles in the attitude information set is equal to or greater than the set ratio, then the first manual stop signal is output.

[0136] If the ratio of the first quantity to the total number of sway angles in the attitude information set is equal to or greater than a set ratio, then the first warning signal is output.

[0137] S705 compares each tilt angle in the attitude information set with a set tilt angle threshold.

[0138] The setting of tilt angle thresholds includes a first setting tilt angle threshold, a second setting tilt angle threshold greater than the first setting tilt angle threshold, and a third setting tilt angle threshold greater than the second setting tilt angle threshold.

[0139] S706, based on the comparison results, determine a third number of tilt angles in the attitude information set that are equal to or greater than a first set tilt angle threshold, determine a fourth number of tilt angles in the attitude information set that are equal to or greater than a second set tilt angle threshold, and determine whether there is a tilt angle in the attitude information set that is equal to or greater than a third set tilt angle threshold.

[0140] S707, determine the second output signal based on the third quantity, the fourth quantity, the total number of tilt angles in the attitude information set, and whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold.

[0141] S708 compares each acceleration in the motion information set with a set acceleration threshold.

[0142] S709, Based on the comparison results, determine whether there is an acceleration in the motion information set that is equal to or greater than the set acceleration threshold.

[0143] S7010 determines the third output signal based on whether there is an acceleration equal to or greater than a set acceleration threshold in the motion information set.

[0144] If there is an acceleration equal to or greater than the set acceleration threshold in the motion information set, then the third manual shutdown signal and the third early warning signal will be output.

[0145] S7011 determines whether to shut down the offshore nuclear power plant based on the first output signal, the second output signal, and the third output signal.

[0146] The specific processes of S701-S7011 described above can be found in the description of the above method embodiments. Their implementation principles and technical effects are similar, and will not be repeated here.

[0147] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0148] Based on the same inventive concept, this application also provides a shutdown processing apparatus for offshore nuclear power plants to implement the shutdown processing method for offshore nuclear power plants described above. The solution provided by this apparatus is similar to the solution described in the above method. Therefore, the specific limitations of one or more embodiments of the shutdown processing apparatus for offshore nuclear power plants provided below can be found in the limitations of the shutdown processing method for offshore nuclear power plants described above, and will not be repeated here.

[0149] In one embodiment, as shown in FIG8, a shutdown processing device 1 for a marine nuclear power plant is provided, comprising: an information acquisition module and a shutdown processing determination module, wherein:

[0150] The information acquisition module 10 is used to acquire attitude information sets and motion information sets of marine nuclear power plants collected by at least two identical detection devices; wherein, the at least two identical detection devices are configured based on the operating conditions of the marine nuclear power plant in the ocean, the attitude information set includes at least two attitude information sets, each attitude information set including a sway angle and / or tilt angle, and the motion information set includes at least two motion information sets, each motion information set including acceleration.

[0151] The shutdown processing module 20 is used to determine whether to shut down the marine nuclear power plant based on the comparison results of the set angle threshold and the attitude information set, and the comparison results of the set acceleration threshold and the motion information set.

[0152] In one embodiment, as shown in FIG9, the shutdown processing module 20 in FIG8 may include:

[0153] The first submodule 21 is used to determine the first output signal based on the comparison result between the set swing angle threshold and the swing angle of the attitude information set.

[0154] The second submodule 22 is used to determine the second output signal based on the comparison result between the set tilt angle threshold and the tilt angle of the attitude information set.

[0155] The third submodule 23 is used to determine the third output signal based on the comparison result between the set acceleration threshold and the acceleration of the motion information concentration.

[0156] The shutdown processing submodule 24 is used to determine whether to shut down the offshore nuclear power plant based on the first output signal, the second output signal, and the third output signal.

[0157] In one embodiment, the first submodule 21 in FIG9 above may include:

[0158] The first threshold comparison unit is used to compare each sway angle in the attitude information set with a set sway angle threshold; wherein the set sway angle threshold includes a first set sway angle threshold, a second set sway angle threshold greater than the first set sway angle threshold, and a third set sway angle threshold greater than the second set sway angle threshold.

[0159] The first quantity determination unit is used to determine, based on the comparison results, a first quantity of sway angles in the attitude information set that are equal to or greater than a first set sway angle threshold, a second quantity of sway angles in the attitude information set that are equal to or greater than a second set sway angle threshold, and whether there exists a sway angle in the attitude information set that is equal to or greater than a third set sway angle threshold.

[0160] The first output unit is used to determine the first output signal based on the first quantity, the second quantity, the total number of sway angles in the attitude information set, and whether there is a sway angle in the attitude information set that is equal to or greater than a third set sway angle threshold.

[0161] In one embodiment, the first output unit is specifically used for:

[0162] If the attitude information set contains a swing angle equal to or greater than the third set swing angle threshold, then the first automatic stop signal is output.

[0163] If the ratio of the second quantity to the total number of sway angles in the attitude information set is equal to or greater than the set ratio, then the first manual stop signal is output.

[0164] If the ratio of the first quantity to the total number of sway angles in the attitude information set is equal to or greater than a set ratio, then the first warning signal is output.

[0165] In one embodiment, the second submodule 22 in FIG9 above may include:

[0166] The second threshold comparison unit is used to compare each tilt angle in the attitude information set with a set tilt angle threshold; wherein the set tilt angle threshold includes a first set tilt angle threshold, a second set tilt angle threshold greater than the first set tilt angle threshold, and a third set tilt angle threshold greater than the second set tilt angle threshold.

[0167] The second quantity determination unit is used to determine, based on the comparison results, a third quantity of tilt angles in the attitude information set that are equal to or greater than a first set tilt angle threshold, a fourth quantity of tilt angles in the attitude information set that are equal to or greater than a second set tilt angle threshold, and whether there exists a tilt angle in the attitude information set that is equal to or greater than a third set tilt angle threshold.

[0168] The second output unit is used to determine the second output signal based on the third quantity, the fourth quantity, the total number of tilt angles in the attitude information set, and whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold.

[0169] In one embodiment, the third submodule 23 in Figure 9 above may include:

[0170] The third threshold comparison unit is used to compare each acceleration in the motion information set with a set acceleration threshold.

[0171] The third quantity determination unit is used to determine whether there is an acceleration in the motion information set that is equal to or greater than a set acceleration threshold.

[0172] The third output unit is used to determine the third output signal based on whether there is an acceleration equal to or greater than a set acceleration threshold in the motion information set.

[0173] In one embodiment, the third output unit is specifically used for:

[0174] If there is an acceleration equal to or greater than the set acceleration threshold in the motion information set, then the third manual shutdown signal and the third early warning signal will be output.

[0175] The modules in the aforementioned decommissioning and processing device based on offshore nuclear power plants can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the operations corresponding to each module.

[0176] In one embodiment, a computer device is provided, which may be a server integrated into a reactor shutdown protection system, and its internal structure diagram is shown in Figure 10. The computer device includes a processor, memory, and a network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database stores data such as attitude and motion information collected by a detection device. The network interface communicates with external terminals via a network connection. When the computer program is executed by the processor, it implements a reactor shutdown process method based on a marine nuclear power plant.

[0177] Those skilled in the art will understand that the structure shown in Figure 10 is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or may combine certain components, or may have different component arrangements.

[0178] In one embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.

[0179] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0180] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0181] It should be noted that the attitude information set and motion information set involved in this application are all information and data that have been authorized or fully authorized by the parties.

[0182] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0183] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0184] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for shutting down a marine nuclear power plant, characterized in that, The method, executed by the shutdown protection system, includes: acquiring attitude information sets and motion information sets of the offshore nuclear power plant collected by at least two identical detection devices; wherein the at least two identical detection devices are configured based on the operating conditions of the ocean where the offshore nuclear power plant is located; the attitude information set includes at least two attitude information sets, each including a roll angle and / or tilt angle; the motion information set includes at least two motion information sets, each including acceleration; determining a first output signal based on a comparison between a set roll angle threshold and the roll angle of the attitude information set; determining a second output signal based on a comparison between a set tilt angle threshold and the tilt angle of the attitude information set; determining a third output signal based on a comparison between a set acceleration threshold and the acceleration of the motion information set; and determining whether to shut down the offshore nuclear power plant based on the first output signal, the second output signal, and the third output signal; the method based on the set roll angle threshold... Determining a first output signal based on the comparison results of the sway angles in the attitude information set includes: comparing each sway angle in the attitude information set with a set sway angle threshold; wherein the set sway angle thresholds include a first set sway angle threshold, a second set sway angle threshold greater than the first set sway angle threshold, and a third set sway angle threshold greater than the second set sway angle threshold; determining a first number of sway angles in the attitude information set that are equal to or greater than the first set sway angle threshold, a second number of sway angles in the attitude information set that are equal to or greater than the second set sway angle threshold, and determining whether there is a sway angle in the attitude information set that is equal to or greater than the third set sway angle threshold; and determining the first output signal based on the first number, the second number, the total number of sway angles in the attitude information set, and whether there is a sway angle in the attitude information set that is equal to or greater than the third set sway angle threshold.

2. The method according to claim 1, characterized in that, The step of determining the first output signal based on the first quantity, the second quantity, the total number of sway angles in the attitude information set, and whether there is a sway angle in the attitude information set equal to or greater than a third set sway angle threshold includes: if there is a sway angle in the attitude information set equal to or greater than the third set sway angle threshold, then output a first automatic shutdown signal; if the ratio of the second quantity to the total number of sway angles in the attitude information set is equal to or greater than a set ratio, then output a first manual shutdown signal; if the ratio of the first quantity to the total number of sway angles in the attitude information set is equal to or greater than a set ratio, then output a first warning signal.

3. The method according to claim 1, characterized in that, The step of determining the second output signal based on the comparison result between the set tilt angle threshold and the tilt angle of the attitude information set includes: comparing each tilt angle of the attitude information set with the set tilt angle threshold; wherein the set tilt angle threshold includes a first set tilt angle threshold, a second set tilt angle threshold greater than the first set tilt angle threshold, and a third set tilt angle threshold greater than the second set tilt angle threshold; based on the comparison result, determining a third number of tilt angles in the attitude information set that are equal to or greater than the first set tilt angle threshold, determining a fourth number of tilt angles in the attitude information set that are equal to or greater than the second set tilt angle threshold, and determining whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold; and determining the second output signal based on the third number, the fourth number, the total number of tilt angles in the attitude information set, and whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold.

4. The method according to claim 1, characterized in that, The step of determining the third output signal based on the comparison result between the set acceleration threshold and the acceleration in the motion information set includes: comparing each acceleration in the motion information set with the set acceleration threshold; determining whether there is an acceleration in the motion information set that is equal to or greater than the set acceleration threshold based on the comparison result; and determining the third output signal based on whether there is an acceleration in the motion information set that is equal to or greater than the set acceleration threshold.

5. The method according to claim 4, characterized in that, The step of determining the third output signal based on whether there is an acceleration equal to or greater than a set acceleration threshold in the motion information set includes: if there is an acceleration equal to or greater than the set acceleration threshold in the motion information set, then outputting a third manual shutdown signal and a third warning signal.

6. The method according to claim 1, characterized in that, The types and numbers of sensors included in each detection device are the same; the types of sensors included in each detection device are determined based on the degree of influence of various marine operating conditions on the offshore nuclear power plant.

7. A shutdown treatment device for a marine nuclear power plant, characterized in that, Configured in a reactor shutdown protection system, the device includes: an information acquisition module for acquiring attitude information sets and motion information sets of a marine nuclear power plant collected by at least two identical detection devices; wherein the attitude information set includes at least two attitude information sets, each including a roll angle and / or tilt angle, and the motion information set includes at least two motion information sets, each including acceleration; a reactor shutdown processing module, including a first submodule, a second submodule, a third submodule, and a reactor shutdown processing submodule; the first submodule is used to determine a first output signal based on a comparison result of a set roll angle threshold and the roll angle in the attitude information set; the second submodule is used to determine a second output signal based on a comparison result of a set tilt angle threshold and the tilt angle in the attitude information set; the third submodule is used to determine a third output signal based on a comparison result of a set acceleration threshold and the acceleration in the motion information set; and the reactor shutdown processing submodule is used to determine whether to perform reactor shutdown processing on the marine nuclear power plant based on the first output signal, the second output signal, and the third output signal. The first submodule includes a first threshold comparison unit, a first quantity determination unit, and a first output unit. The first threshold comparison unit is used to compare each sway angle in the attitude information set with a set sway angle threshold. The set sway angle threshold includes a first set sway angle threshold, a second set sway angle threshold greater than the first set sway angle threshold, and a third set sway angle threshold greater than the second set sway angle threshold. The first quantity determination unit is used to determine, based on the comparison results, a first quantity of sway angles in the attitude information set that are equal to or greater than the first set sway angle threshold, a second quantity of sway angles in the attitude information set that are equal to or greater than the second set sway angle threshold, and whether there is a sway angle in the attitude information set that is equal to or greater than the third set sway angle threshold. The first output unit is used to determine a first output signal based on the first quantity, the second quantity, the total number of sway angles in the attitude information set, and whether there is a sway angle in the attitude information set that is equal to or greater than the third set sway angle threshold.

8. The apparatus according to claim 7, characterized in that, The first output unit is specifically used to: output a first automatic stop signal if there is a sway angle in the attitude information set that is equal to or greater than a third set sway angle threshold; and output a first manual stop signal if the ratio of the second quantity to the total number of sway angles in the attitude information set is equal to or greater than a set ratio. If the ratio of the first quantity to the total number of sway angles in the attitude information set is equal to or greater than a set ratio, then the first warning signal is output.

9. The apparatus according to claim 7, characterized in that, The second submodule includes: a second threshold comparison unit, used to compare each tilt angle in the attitude information set with a set tilt angle threshold; wherein the set tilt angle threshold includes a first set tilt angle threshold, a second set tilt angle threshold greater than the first set tilt angle threshold, and a third set tilt angle threshold greater than the second set tilt angle threshold; a second quantity determination unit, used to determine, based on the comparison results, a third quantity of tilt angles in the attitude information set that are equal to or greater than the first set tilt angle threshold, a fourth quantity of tilt angles in the attitude information set that are equal to or greater than the second set tilt angle threshold, and whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold; and a second output unit, used to determine a second output signal based on the third quantity, the fourth quantity, the total number of tilt angles in the attitude information set, and whether there is a tilt angle in the attitude information set that is equal to or greater than the third set tilt angle threshold.

10. The apparatus according to claim 7, characterized in that, The third submodule includes: a third threshold comparison unit, used to compare each acceleration in the motion information set with a set acceleration threshold; a third quantity determination unit, used to determine whether there is an acceleration in the motion information set that is equal to or greater than the set acceleration threshold; and a third output unit, used to determine a third output signal based on whether there is an acceleration in the motion information set that is equal to or greater than the set acceleration threshold.

Images