Method for controlling rotating speed of main feed pump of sodium-cooled fast reactor

Abstract

The invention particularly relates to a sodium-cooled fast reactor main feed pump control method. The method comprises the steps that an operator selects a main feed pump control mode as a main feed water regulating valve pressure difference control mode or a mother pipe pressure control mode according to the running state of a sodium-cooled fast reactor unit; executing a main feed pump control mode selected by an operator; when the main feed water pump is in the main feed water regulating valve differential pressure control mode, the rotating speed of the main feed water pump is adjusted according to the difference value between the measured value and the set value of the main feed water regulating valve differential pressure, and the main feed water regulating valve differential pressure is kept at the set value; and when the main water feeding pump is in the mother pipe pressure control mode, the rotating speed of the main water feeding pump is adjusted according to the difference value between the measured value and the set value of the pressure of the main water feeding header, and the pressure of the main water feeding header is kept at the set value. The invention further relates to a sodium-cooled fast reactor main feed pump control device, computer equipment and a storage medium. According to the invention, the main water supply system can quickly respond to different operation conditions of the unit, the pressure oscillation of the main water supply system is effectively avoided, and the pressure stability of the main water supply system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of speed control of a main feedwater pump for a sodium-cooled fast reactor, and in particular to a speed control method, device, computer equipment and computer-readable storage medium for a main feedwater pump for a sodium-cooled fast reactor. Background Art

[0002] The main feedwater pump of the sodium-cooled fast reactor currently adopts the main feedwater regulating valve pressure differential control mode. In the main feedwater regulating valve pressure differential control mode, the main feedwater pump adjusts the speed of the main feedwater pump according to the difference between the measured value and the set value of the main feedwater regulating valve pressure differential to maintain the main feedwater regulating valve pressure differential at the set value. However, in the actual operating conditions of the unit, it was found that adjusting the speed of the main feedwater pump only according to the main feedwater regulating valve pressure differential is likely to cause fluctuations in the main pipe and dual loop pressures. Summary of the invention

[0003] The object of the present invention is to provide a method, device, computer equipment and computer-readable storage medium for controlling the speed of a main feed water pump of a sodium-cooled fast reactor, so that the main feed water system can quickly respond to different operating conditions of the unit, effectively avoid the oscillation of the pressure of the main feed water system, and improve the stability of the pressure of the main feed water system.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention also provides a method for controlling a main feedwater pump of a sodium-cooled fast reactor, comprising the following steps:

[0006] The operator selects the main feedwater pump control mode as the main feedwater regulating valve pressure difference control mode or the main pipe pressure control mode according to the operating status of the sodium-cooled fast reactor unit;

[0007] Execute the main feedwater pump control mode selected by the operator;

[0008] When the main feed water pump is in the main feed water regulating valve pressure difference control mode, the main feed water pump speed is adjusted according to the difference between the measured value and the set value of the main feed water regulating valve pressure difference, so as to maintain the main feed water regulating valve pressure difference at the set value;

[0009] In the main pipe pressure control mode, the main feed water pump adjusts the speed of the main feed water pump according to the difference between the measured value and the set value of the main feed water header pressure to maintain the main feed water header pressure at the set value.

[0010] As one of the achievable methods, executing the main feed water regulating valve pressure difference control mode of the main feed water pump includes the following steps:

[0011] According to the difference between the measured value and the set value of the main feed water header pressure, the main feed water pump speed is calculated to generate a main feed water pump speed digital signal;

[0012] Convert the main feed water pump speed digital signal into the main feed water pump speed analog signal;

[0013] Convert the main feed water pump speed analog signal into the main feed water pump speed electrical signal and send it to the main feed water pump;

[0014] The main feed water pump adjusts its speed according to the main feed water pump speed electrical signal.

[0015] As one of the achievable methods, according to the difference between the measured value and the set value of the main feed water header pressure, the main feed water pump speed is calculated to generate a main feed water pump speed digital signal, including the following steps:

[0016] Set the main water supply header pressure setting value;

[0017] Track the measured value of the main water supply header pressure and calculate the difference between the measured value and the set value of the main water supply header pressure;

[0018] According to the difference between the measured value and the set value of the main feed water header pressure, the main feed water pump speed is calculated to generate a main feed water pump speed digital signal.

[0019] As one of the achievable methods, the main feed water regulating valve pressure difference control mode of the main feed water pump speed is implemented, including the following steps:

[0020] According to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, the speed of the main feed water pump is calculated, and a main feed water pump speed digital signal is generated;

[0021] Converting the main feed water pump speed digital signal into a main feed water pump speed digital signal analog signal;

[0022] Converting the analog signal of the main feed water pump speed digital signal into the electrical signal of the main feed water pump speed digital signal and sending it to the main feed water pump;

[0023] The main feed water pump adjusts its speed according to the main feed water pump speed electrical signal.

[0024] As one of the achievable methods, according to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, the speed of the main feed water pump is calculated, and a main feed water pump speed digital signal is generated, including the following steps:

[0025] Set the differential pressure setting value of the main water supply regulating valve;

[0026] Track the measured value of the differential pressure of the main water supply regulating valve, and calculate the difference between the measured value and the set value of the differential pressure of the main water supply regulating valve;

[0027] According to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, the speed of the main feed water pump is calculated and a main feed water pump speed digital signal is generated.

[0028] As one of the feasible methods, the measured value of the pressure difference of the main water supply regulating valve is the average value of the measured values ​​of the pressure difference of the main water supply regulating valve of each loop; the set value of the pressure difference of the main water supply regulating valve is the average value of the set values ​​of the pressure difference of the main water supply regulating valve of each loop.

[0029] As one of the achievable methods, according to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, the speed of the main feed water pump is calculated, and a main feed water pump speed digital signal is generated, including the following steps:

[0030] When the dead zone is activated, when the measured value of the pressure difference of the main water supply regulating valve is less than 0.8MPa or greater than 1.3MPa, the speed of the main water supply pump is calculated based on the difference between the measured value and the set value of the pressure difference of the main water supply regulating valve, and a main water supply pump speed digital signal is generated;

[0031] When the dead zone is cut off, the speed of the main feed water pump is calculated according to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, and a main feed water pump speed digital signal is generated;

[0032] When the measured value of the pressure difference of the main feed water regulating valve is greater than 1.0MPa and less than 1.1MPa, the main feed water pump speed digital signal is no longer generated;

[0033] The setting value of the pressure difference of the main water supply regulating valve is greater than or equal to 0.5MPa and less than or equal to 1.3MPa.

[0034] As one of the feasible ways, the operator selects the main feedwater pump control mode according to the operating status of the sodium-cooled fast reactor unit;

[0035] When the main feed water pump control mode is selected as the main feed water regulating valve pressure difference control mode, the main feed water regulating valve pressure difference control mode of the main feed water pump is executed, the main pipe pressure control mode of the main feed water pump is locked, and only the measured value and set value of the main feed water header pressure are tracked and displayed;

[0036] When the main feed water pump control mode is selected as the main pipe pressure control mode, the main pipe pressure control mode of the main feed water pump is executed, the main feed water regulating valve pressure difference control mode of the main feed water pump is locked, and only the measured value and set value of the main feed water regulating valve pressure difference are tracked and displayed.

[0037] The present invention also provides a sodium-cooled fast reactor main feedwater pump control device, comprising:

[0038] The main feedwater pump control mode switching module is used for the operator to select the main feedwater pump control mode as the main feedwater regulating valve pressure difference control mode or the main pipe pressure control mode according to the operating status of the sodium-cooled fast reactor unit;

[0039] The main feedwater pump control mode execution module is used to execute the main feedwater pump control mode selected by the operator;

[0040] When the main feed water pump is in the main feed water regulating valve pressure difference control mode, the main feed water pump speed is adjusted according to the difference between the measured value and the set value of the main feed water regulating valve pressure difference, so as to maintain the main feed water regulating valve pressure difference at the set value;

[0041] In the main pipe pressure control mode, the main feed water pump adjusts the speed of the main feed water pump according to the difference between the measured value and the set value of the main feed water header pressure to maintain the main feed water header pressure at the set value.

[0042] The present invention also provides a computer device, comprising a memory and a processor, wherein the memory stores computer-readable instructions, and the processor implements the steps of the above-mentioned sodium-cooled fast reactor main feedwater pump control method when executing the computer-readable instructions.

[0043] The present invention also provides a computer-readable storage medium, on which computer-readable instructions are stored. When the computer-readable instructions are executed, the steps of the above-mentioned sodium-cooled fast reactor main feedwater pump control method are implemented.

[0044] Beneficial technical effects of the present invention:

[0045] The sodium-cooled fast reactor main feedwater pump control method, device, computer equipment and computer-readable storage medium of the present invention provide two options for the main feedwater pump control mode: a main feedwater regulating valve pressure difference control mode and a mother pipe pressure control mode. The operator can select a suitable main feedwater pump control mode according to the unit operation condition. Under the main feedwater regulating valve pressure difference control mode, the main feedwater pump adjusts the main feedwater pump speed according to the difference between the measured value and the set value of the main feedwater regulating valve pressure difference, maintains the main feedwater regulating valve pressure difference at the set value, and realizes the linear regulation of the main feedwater regulating valve pressure difference. The main water supply manifold pressure is adjusted according to the difference between the measured value and the set value of the main water supply manifold pressure, and the main water supply manifold pressure is maintained at the set value, thereby realizing linear adjustment of the main water supply manifold pressure and tracking the main water supply regulating valve pressure difference. This realizes comprehensive adjustment and monitoring of the main water supply system pressure, so that the main water supply system can respond quickly to different operating conditions, effectively avoid pressure fluctuations in the main water supply system, and improve the stability and regulation accuracy of the main water supply system pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A flow chart of an embodiment of a method for controlling a main feedwater pump of a sodium-cooled fast reactor according to the present invention;

[0047] Figure 2 The present invention is a schematic structural view of an embodiment of a main feedwater pump control device for a sodium-cooled fast reactor.

[0048] Figure 3 The figure is a schematic structural view of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0050] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0051] The technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0052] See also Figure 1 This embodiment provides a method for controlling a main feedwater pump of a sodium-cooled fast reactor, comprising the following steps:

[0053] The operator selects the main feedwater pump control mode as the main feedwater regulating valve pressure difference control mode or the main pipe pressure control mode according to the operating status of the sodium-cooled fast reactor unit;

[0054] Execute the main feedwater pump control mode selected by the operator;

[0055] When the main feed water pump is in the main feed water regulating valve pressure difference control mode, the main feed water pump speed is adjusted according to the difference between the measured value and the set value of the main feed water regulating valve pressure difference, so as to maintain the main feed water regulating valve pressure difference at the set value;

[0056] In the main pipe pressure control mode, the main feed water pump adjusts the speed of the main feed water pump according to the difference between the measured value and the set value of the main feed water header pressure to maintain the main feed water header pressure at the set value.

[0057] In this embodiment, as one of the achievable methods, executing the main feed water regulating valve pressure difference control mode of the main feed water pump includes the following steps:

[0058] According to the difference between the measured value and the set value of the main feed water header pressure, the main feed water pump speed is calculated to generate a main feed water pump speed digital signal;

[0059] Convert the main feed water pump speed digital signal into the main feed water pump speed analog signal;

[0060] Convert the main feed water pump speed analog signal into the main feed water pump speed electrical signal and send it to the main feed water pump;

[0061] The main feed water pump adjusts its speed according to the main feed water pump speed electrical signal.

[0062] In this embodiment, as one of the achievable methods, the main feed water pump speed is calculated according to the difference between the measured value and the set value of the main feed water header pressure, and a main feed water pump speed digital signal is generated, including the following steps:

[0063] Set the main water supply header pressure setting value;

[0064] Track the measured value of the main water supply header pressure and calculate the difference between the measured value and the set value of the main water supply header pressure;

[0065] According to the difference between the measured value and the set value of the main feed water header pressure, the main feed water pump speed is calculated to generate a main feed water pump speed digital signal.

[0066] In this embodiment, as one of the achievable methods, the main feed water regulating valve pressure difference control mode of the main feed water pump speed is executed, including the following steps:

[0067] According to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, the speed of the main feed water pump is calculated, and a main feed water pump speed digital signal is generated;

[0068] Converting the main feed water pump speed digital signal into a main feed water pump speed digital signal analog signal;

[0069] Converting the analog signal of the main feed water pump speed digital signal into the electrical signal of the main feed water pump speed digital signal and sending it to the main feed water pump;

[0070] The main feed water pump adjusts its speed according to the main feed water pump speed electrical signal.

[0071] In this embodiment, as one of the achievable methods, the main feed water pump speed is calculated according to the difference between the measured value and the set value of the main feed water regulating valve pressure difference, and a main feed water pump speed digital signal is generated, including the following steps:

[0072] Set the differential pressure setting value of the main water supply regulating valve;

[0073] Track the measured value of the differential pressure of the main water supply regulating valve, and calculate the difference between the measured value and the set value of the differential pressure of the main water supply regulating valve;

[0074] According to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, the speed of the main feed water pump is calculated and a main feed water pump speed digital signal is generated.

[0075] In this embodiment, as one of the feasible methods, the measured value of the pressure difference of the main water supply regulating valve is the average value of the measured values ​​of the pressure difference of the main water supply regulating valve of each loop; the set value of the pressure difference of the main water supply regulating valve is the average value of the set values ​​of the pressure difference of the main water supply regulating valve of each loop.

[0076] In this embodiment, as one of the achievable methods, the main feed water pump speed is calculated according to the difference between the measured value and the set value of the main feed water regulating valve pressure difference, and a main feed water pump speed digital signal is generated, including the following steps:

[0077] When the dead zone is activated, when the measured value of the pressure difference of the main water supply regulating valve is less than 0.8MPa or greater than 1.3MPa, the speed of the main water supply pump is calculated based on the difference between the measured value and the set value of the pressure difference of the main water supply regulating valve, and a main water supply pump speed digital signal is generated;

[0078] When the dead zone is cut off, the speed of the main feed water pump is calculated according to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, and a main feed water pump speed digital signal is generated;

[0079] When the measured value of the pressure difference of the main feed water regulating valve is greater than 1.0MPa and less than 1.1MPa, the main feed water pump speed digital signal is no longer generated;

[0080] The setting value of the pressure difference of the main water supply regulating valve is greater than or equal to 0.5MPa and less than or equal to 1.3MPa.

[0081] In this embodiment, as one of the achievable methods, the operator selects the main feedwater pump control mode according to the operating status of the sodium-cooled fast reactor unit;

[0082] When the main feed water pump control mode is selected as the main feed water regulating valve pressure difference control mode, the main feed water regulating valve pressure difference control mode of the main feed water pump is executed, the main pipe pressure control mode of the main feed water pump is locked, and only the measured value and set value of the main feed water header pressure are tracked and displayed;

[0083] When the main feed water pump control mode is selected as the main pipe pressure control mode, the main pipe pressure control mode of the main feed water pump is executed, the main feed water regulating valve pressure difference control mode of the main feed water pump is locked, and only the measured value and set value of the main feed water regulating valve pressure difference are tracked and displayed.

[0084] It should be understood that the multiple sub-steps or multiple stages in each process step do not necessarily have to be executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternating with other steps or at least part of the sub-steps or stages of other steps.

[0085] refer to Figure 2As an implementation of the above method, the present invention provides an embodiment of a main feed water pump control device for a sodium-cooled fast reactor. The device embodiment corresponds to the embodiment of the above method, and the device can be specifically applied to various electronic devices.

[0086] The main feedwater pump control device for a sodium-cooled fast reactor described in this embodiment includes:

[0087] The main feedwater pump control mode switching module is used for the operator to select the main feedwater pump control mode as the main feedwater regulating valve pressure difference control mode or the main pipe pressure control mode according to the operating status of the sodium-cooled fast reactor unit;

[0088] The main feedwater pump control mode execution module is used to execute the main feedwater pump control mode selected by the operator;

[0089] When the main feed water pump is in the main feed water regulating valve pressure difference control mode, the main feed water pump speed is adjusted according to the difference between the measured value and the set value of the main feed water regulating valve pressure difference, so as to maintain the main feed water regulating valve pressure difference at the set value;

[0090] In the main pipe pressure control mode, the main feed water pump adjusts the speed of the main feed water pump according to the difference between the measured value and the set value of the main feed water header pressure to maintain the main feed water header pressure at the set value.

[0091] In this embodiment, as one of the achievable methods, the main feed water pump control mode execution module includes:

[0092] The first PID operation module is used to calculate the speed of the main feed water pump according to the difference between the measured value and the set value of the main feed water header pressure when the operator selects the main feed water pump control mode as the main pipe pressure control mode, generate a main feed water pump speed digital signal and send it to the digital-to-analog conversion module;

[0093] A digital-to-analog conversion module is used to receive the main feedwater pump speed digital signal sent by the first PID operation module and convert it into a main feedwater pump speed analog signal and then send it to the electrical conversion module;

[0094] An electrical conversion module is used to receive the analog signal of the main feed water pump speed sent by the digital-to-analog conversion module and convert it into an electrical signal of the main feed water pump speed and then send it to the main feed water pump;

[0095] The main feed water pump adjusts its speed according to the main feed water pump speed electrical signal.

[0096] In this embodiment, as one of the achievable ways, the main feed water pump control mode execution module further includes:

[0097] The first set value station is used to track the measured value of the main water supply manifold pressure, set the main water supply manifold pressure set value, and display the measured value and set value of the main water supply manifold pressure; when the operator selects the main water supply pump control mode as the mother pipe pressure control mode, the measured value and set value of the main water supply manifold pressure are sent to the first PID operation module.

[0098] In this embodiment, as one of the achievable ways, the main feed water pump control mode execution module further includes:

[0099] The second PID operation module is used to calculate the speed of the main feed water pump according to the difference between the measured value and the set value of the main feed water regulating valve pressure difference when the operator selects the main feed water pump control mode as the main feed water regulating valve pressure difference control mode, generate the main feed water pump speed digital signal and send it to the digital-to-analog conversion module;

[0100] The digital-to-analog conversion module is also used to receive the main feedwater pump speed digital signal sent by the second PID operation module and convert the main feedwater pump speed analog signal and then send it to the electrical conversion module;

[0101] The electrical conversion module is also used to receive the main feed water pump speed analog signal sent by the digital-to-analog conversion module and convert it into the main feed water pump speed electrical signal and then send it to the main feed water pump;

[0102] The main feed water pump adjusts its speed according to the main feed water pump speed electrical signal.

[0103] In this embodiment, as one of the achievable ways, the main feed water pump control mode execution module further includes:

[0104] The second set value station is used to track the measured value of the pressure difference of the main water supply regulating valve of each loop, calculate the average value of the measured value of the pressure difference of the main water supply regulating valve of each loop, and generate the measured value of the pressure difference of the main water supply regulating valve; calculate the average value of the set value of the pressure difference of the main water supply regulating valve of each loop, and generate the set value of the pressure difference of the main water supply regulating valve; display the measured value and set value of the pressure difference of the main water supply regulating valve; when the operator selects the main water supply pump control mode as the main water supply regulating valve pressure difference control mode, the measured value and set value of the main water supply regulating valve pressure difference are sent to the second PID operation module.

[0105] In this embodiment, as one of the achievable methods, the second PID operation module calculates the speed of the main water supply pump according to the difference between the measured value and the set value of the pressure difference of the main water supply regulating valve, and generates a main water supply pump speed digital signal, including the following steps:

[0106] When the dead zone is activated, when the measured value of the pressure difference of the main water supply regulating valve is less than 0.8MPa or greater than 1.3MPa, the second PID operation module calculates the speed of the main water supply pump according to the difference between the measured value of the pressure difference of the main water supply regulating valve and the set value, and generates a main water supply pump speed digital signal;

[0107] When the dead zone is cut off, the second PID operation module calculates the speed of the main feed water pump according to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, and generates a main feed water pump speed digital signal;

[0108] When the measured value of the pressure difference of the main water supply regulating valve is greater than 1.0MPa and less than 1.1MPa, the second PID operation module no longer generates the main water supply pump speed digital signal;

[0109] The setting value of the pressure difference of the main water supply regulating valve is greater than or equal to 0.5MPa and less than or equal to 1.3MPa.

[0110] In this embodiment, as one of the achievable methods, the operator selects the main feedwater pump control mode in the main feedwater pump control mode switching module according to the operating state of the sodium-cooled fast reactor unit;

[0111] When the operator selects the main feed water pump control mode as the main feed water regulating valve pressure difference control mode in the main feed water pump control mode switching module, the main feed water pump control mode execution module executes the main feed water regulating valve pressure difference control mode of the main feed water pump, locks the main pipe pressure control mode of the main feed water pump, and only tracks and displays the measured value and set value of the main feed water header pressure;

[0112] When the operator selects the main feed water pump control mode as the main pipe pressure control mode in the main feed water pump control mode switching module, the main feed water pump control mode execution module executes the main pipe pressure control mode of the main feed water pump, locks the main feed water regulating valve pressure difference control mode of the main feed water pump, and only tracks and displays the measured value and set value of the main feed water regulating valve pressure difference.

[0113] In this embodiment, as one of the achievable methods, the main feedwater pump control device for a sodium-cooled fast reactor further includes:

[0114] The remote control station is used for the operator to control and monitor the input signals of the first PID operation module and the second PID operation module.

[0115] See also Figure 3 As an implementation of the above method, the present invention provides an embodiment of a computer device, and the computer device embodiment corresponds to the embodiment of the above method.

[0116] The computer device described in this embodiment includes a memory, a processor and a network interface that are interconnected and communicated through a system bus. It should be noted that the figure only shows a computer device with a memory, a processor and a network interface, but it should be understood that it is not required to implement all the components shown, and more or fewer components can be implemented instead. Among them, those skilled in the art can understand that the computer device here is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to a microprocessor, an application-specific integrated circuit, a programmable gate array, a digital processor, an embedded device, etc.

[0117] The computer device may be a computing device such as a desktop computer, a notebook, a PDA, a cloud server, etc. The computer device may interact with a user through a keyboard, a mouse, a remote controller, a touch pad, or a voice control device.

[0118] The memory includes at least one type of readable storage medium, and the readable storage medium includes flash memory, hard disk, multimedia card, card-type memory, random access memory, static random access memory, read-only memory, electrically erasable programmable read-only memory, programmable read-only memory, magnetic memory, disk, optical disk, etc. In some embodiments, the memory may be an internal storage unit of the computer device, such as a hard disk or memory of the computer device. In other embodiments, the memory may also be an external storage device of the computer device, such as a plug-in hard disk, smart memory card, secure digital card, flash memory card, etc. equipped on the computer device. Of course, the memory may also include both the internal storage unit of the computer device and its external storage device. In this embodiment, the memory is generally used to store the operating system and various application software installed on the computer device, such as the computer-readable instructions of the above-mentioned sodium-cooled fast reactor startup feedwater pump outlet pneumatic control valve control method. In addition, the memory may also be used to temporarily store various types of data that have been output or are to be output.

[0119] In some embodiments, the processor may be a central processing unit, a controller, a microcontroller, a microprocessor, or other data processing chip. The processor is generally used to control the overall operation of the computer device. In this embodiment, the processor is used to run the computer-readable instructions stored in the memory or process data, such as running the computer-readable instructions of the above-mentioned sodium-cooled fast reactor main feedwater pump control method.

[0120] The network interface may include a wireless network interface or a wired network interface, which is generally used to establish a communication connection between the computer device and other electronic devices.

[0121] As an implementation of the above method, the present invention provides an embodiment of a computer-readable storage medium, and the embodiment of the computer-readable storage medium corresponds to the embodiment of the above method.

[0122] The computer-readable storage medium described in this embodiment stores computer-readable instructions, and the computer-readable instructions can be executed by at least one processor to enable the at least one processor to perform the steps of the above-mentioned sodium-cooled fast reactor main feedwater pump control method.

[0123] The sodium-cooled fast reactor main feedwater pump control method, device, computer equipment and computer-readable storage medium of the present embodiment provide two options for the main feedwater pump control mode: the main feedwater regulating valve pressure difference control mode and the mother pipe pressure control mode. The operator can select the appropriate main feedwater pump control mode according to the unit operating conditions. Under the main feedwater regulating valve pressure difference control mode, the main feedwater pump adjusts the main feedwater pump speed according to the difference between the measured value and the set value of the main feedwater regulating valve pressure difference, maintains the main feedwater regulating valve pressure difference at the set value, and realizes the linear control of the main feedwater regulating valve pressure difference. Adjustment, and track the main water supply manifold pressure at the same time; under the mother pipe pressure control mode, the main water supply pump adjusts the main water supply pump speed according to the difference between the measured value and the set value of the main water supply manifold pressure, maintains the main water supply manifold pressure at the set value, realizes linear adjustment of the main water supply manifold pressure, and tracks the main water supply regulating valve pressure difference at the same time; realizes comprehensive adjustment and monitoring of the main water supply system pressure, so that the main water supply system can respond quickly to different operating conditions, effectively avoids the oscillation of the main water supply system pressure, and improves the stability and regulation accuracy of the main water supply system pressure.

[0124] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for controlling a main feedwater pump of a sodium-cooled fast reactor, characterized in that: The steps include: The operator selects the main feedwater pump control mode as the main feedwater regulating valve pressure difference control mode or the main pipe pressure control mode according to the operating status of the sodium-cooled fast reactor unit; Execute the main feed water pump control mode selected by the operator; when executing the main feed water regulating valve differential pressure control mode of the main feed water pump, lock the main pipe pressure control mode of the main feed water pump, and only track and display the measured value and set value of the main feed water header pressure; when executing the main pipe pressure control mode of the main feed water pump, lock the main feed water regulating valve differential pressure control mode of the main feed water pump, and only track and display the measured value and set value of the main feed water regulating valve differential pressure; When the main feed water pump is in the main feed water regulating valve pressure difference control mode, the main feed water pump speed is adjusted according to the difference between the measured value and the set value of the main feed water regulating valve pressure difference, so as to maintain the main feed water regulating valve pressure difference at the set value; In the main pipe pressure control mode, the main feed water pump adjusts the speed of the main feed water pump according to the difference between the measured value and the set value of the main feed water header pressure to maintain the main feed water header pressure at the set value.

2. The sodium-cooled fast reactor main feedwater pump control method according to claim 1, characterized in that: Executing the main feed water regulating valve pressure difference control mode of the main feed water pump includes the following steps: According to the difference between the measured value and the set value of the main feed water header pressure, the main feed water pump speed is calculated to generate a main feed water pump speed digital signal; Convert the main feed water pump speed digital signal into the main feed water pump speed analog signal; Convert the main feed water pump speed analog signal into the main feed water pump speed electrical signal and send it to the main feed water pump; The main feed water pump adjusts its speed according to the main feed water pump speed electrical signal.

3. The sodium-cooled fast reactor main feedwater pump control method according to claim 2, characterized in that: According to the difference between the measured value and the set value of the main feed water header pressure, the main feed water pump speed is calculated to generate a main feed water pump speed digital signal, including the following steps: Set the main water supply header pressure setting value; Track the measured value of the main water supply header pressure and calculate the difference between the measured value and the set value of the main water supply header pressure; According to the difference between the measured value and the set value of the main feed water header pressure, the main feed water pump speed is calculated to generate a main feed water pump speed digital signal.

4. The sodium-cooled fast reactor main feedwater pump control method according to claim 1, characterized in that: The main feed water regulating valve pressure difference control mode for executing the main feed water pump speed includes the following steps: According to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, the speed of the main feed water pump is calculated, and a main feed water pump speed digital signal is generated; Converting the main feed water pump speed digital signal into a main feed water pump speed digital signal analog signal; Converting the analog signal of the main feed water pump speed digital signal into the electrical signal of the main feed water pump speed digital signal and sending it to the main feed water pump; The main feed water pump adjusts its speed according to the main feed water pump speed electrical signal.

5. The sodium-cooled fast reactor main feedwater pump control method according to claim 4, characterized in that: According to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, the speed of the main feed water pump is calculated, and a main feed water pump speed digital signal is generated, including the following steps: Set the differential pressure setting value of the main water supply regulating valve; Track the measured value of the differential pressure of the main water supply regulating valve, and calculate the difference between the measured value and the set value of the differential pressure of the main water supply regulating valve; According to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, the speed of the main feed water pump is calculated and a main feed water pump speed digital signal is generated.

6. The sodium-cooled fast reactor main feedwater pump control method according to claim 5, characterized in that: The measured value of the pressure difference of the main water supply regulating valve is the average value of the measured values ​​of the pressure difference of the main water supply regulating valve of each loop; the set value of the pressure difference of the main water supply regulating valve is the average value of the set values ​​of the pressure difference of the main water supply regulating valve of each loop.

7. The sodium-cooled fast reactor main feedwater pump control method according to claim 5, characterized in that: According to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, the speed of the main feed water pump is calculated, and a main feed water pump speed digital signal is generated, including the following steps: When the dead zone is activated, when the measured value of the pressure difference of the main water supply regulating valve is less than 0.8MPa or greater than 1.3MPa, the speed of the main water supply pump is calculated based on the difference between the measured value and the set value of the pressure difference of the main water supply regulating valve, and a main water supply pump speed digital signal is generated; When the dead zone is cut off, the speed of the main feed water pump is calculated according to the difference between the measured value and the set value of the pressure difference of the main feed water regulating valve, and a main feed water pump speed digital signal is generated; When the measured value of the pressure difference of the main feed water regulating valve is greater than 1.0MPa and less than 1.1MPa, the main feed water pump speed digital signal is no longer generated; The setting value of the pressure difference of the main water supply regulating valve is greater than or equal to 0.5MPa and less than or equal to 1.3MPa.

8. A sodium-cooled fast reactor main feedwater pump control device, characterized in that: include: The main feedwater pump control mode switching module is used for the operator to select the main feedwater pump control mode as the main feedwater regulating valve pressure difference control mode or the main pipe pressure control mode according to the operating status of the sodium-cooled fast reactor unit; The main feed water pump control mode execution module is used to execute the main feed water pump control mode selected by the operator; when executing the main feed water regulating valve pressure difference control mode of the main feed water pump, the main pipe pressure control mode of the main feed water pump is locked, and only the measured value and set value of the main feed water header pressure are tracked and displayed; when executing the main pipe pressure control mode of the main feed water pump, the main feed water regulating valve pressure difference control mode of the main feed water pump is locked, and only the measured value and set value of the main feed water regulating valve pressure difference are tracked and displayed; When the main feed water pump is in the main feed water regulating valve pressure difference control mode, the main feed water pump speed is adjusted according to the difference between the measured value and the set value of the main feed water regulating valve pressure difference, so as to maintain the main feed water regulating valve pressure difference at the set value; In the main pipe pressure control mode, the main feed water pump adjusts the speed of the main feed water pump according to the difference between the measured value and the set value of the main feed water header pressure to maintain the main feed water header pressure at the set value.

9. A computer device comprising a memory and a processor, wherein the memory stores computer-readable instructions, characterized in that: When the processor executes the computer-readable instructions, the steps of the sodium-cooled fast reactor main feedwater pump control method according to any one of claims 1 to 8 are implemented.

10. A computer-readable storage medium having computer-readable instructions stored thereon, characterized in that: When the computer-readable instructions are executed, the steps of the sodium-cooled fast reactor main feedwater pump control method according to any one of claims 1 to 8 are implemented.

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