Method, device and electronic equipment for detecting low-pressure heater of nuclear power plant

Abstract

The application is suitable for the field of nuclear power technology, and provides a detection method and device for a low-pressure heater of a nuclear power plant and an electronic device, which comprises the following steps: displaying a detection interface; sending a pulse-off instruction to a processor of a target protection channel of a target low-pressure heater; adjusting an attribute value of a connecting line in the case where an isolation valve is closed; adjusting an attribute value of a closing limit switch icon of a check valve in the case where the check valve is closed following the isolation valve; sending a pulse-on instruction to the processor of the target protection channel; adjusting the attribute value of the connecting line in the case where the isolation valve is opened; adjusting the attribute value of the closing limit switch icon of the check valve in the case where the check valve is opened following the isolation valve, and the attribute value is a preset attribute value corresponding to an open state of the check valve; and ending the detection of the target low-pressure heater in the case where the start control is touched again. The above method is beneficial to improving the detection efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of nuclear power, and particularly relates to a detection method and device for a low-pressure heater of a nuclear power plant, an electronic device, a computer readable storage medium, and a computer program product. BACKGROUND

[0002] A nuclear power plant is a facility that generates electricity by using heat generated by nuclear fission. Specifically, the nuclear power plant heats a coolant in a nuclear reactor by using energy released by nuclear fission, and the heated coolant transfers heat to water in a steam generator, so that the water is heated and converted into high-temperature and high-pressure steam. The high-temperature and high-pressure steam enters a steam turbine, pushes the blades of the steam turbine to rotate, and drives the rotor of a generator coaxially connected to the rotating shaft of the steam turbine to rotate, thereby generating electricity.

[0003] The unit in which the steam turbine is located also includes a low-pressure heater and a deaerator. The main function of the low-pressure heater is to heat condensate water by using steam extracted from the steam turbine, so as to increase the temperature of the condensate water entering the deaerator. Since the deaerator is used to further heat the condensate water and remove oxygen in the condensate water, the increase in the temperature of the condensate water entering the deaerator is beneficial to the deaerator to remove oxygen in the condensate water and reduce the heating steam consumed by the deaerator for heating the condensate water. Since the condensate water coming out of the deaerator will be supplied to the steam generator, the increase in the feedwater temperature of the deaerator is beneficial to the increase in the steam parameters, the increase in the work of the steam, and thus the increase in the efficiency of the entire thermal system, and further the increase in the power of the generator of the nuclear power plant. That is, whether the low-pressure heater can work normally will affect the power of the generator of the nuclear power plant.

[0004] Currently, when the low-pressure heater is detected under load, multiple workers need to cooperate to perform the detection. For example, two workers (assuming workers A and B) are required to operate the start button of the isolation valve on the local control box for controlling the low-pressure heater, and since the start button of the isolation valve is at a certain distance from the isolation valve, two other workers (assuming workers C and D) are required to observe whether the isolation valve responds to the operation of the button. In addition, other workers are required to track the action of the isolation valve.

[0005] Since multiple workers need to cooperate with each other during the detection process, the detection efficiency is low, and since the workers communicate on site, the communication usually has a time delay, which may increase the closing time of the isolation valve, increase the risk of isolation of the low-pressure heater, increase the disturbance to the unit parameters, and further cause the detection result to be inaccurate. SUMMARY

[0006] The embodiment of the present application provides a detection method, device and electronic equipment for a low-pressure heater of a nuclear power plant, and can solve the problems of low detection efficiency and low accuracy of detection results for the low-pressure heater.

[0007] In a first aspect, the embodiment of the present application provides a detection method for a low-pressure heater of a nuclear power plant, comprising:

[0008] displaying a detection interface, the detection interface being used for displaying a start control and a closing limit switch icon of a check valve of a target low-pressure heater, wherein the target low-pressure heater is a low-pressure heater currently in need of detection; and the detection interface being further used for displaying an icon of a steam turbine, an icon of an isolation valve of the target low-pressure heater, an icon of the check valve of the target low-pressure heater, and a connection line connecting the icon of the steam turbine and the icon of the isolation valve.

[0009] in a case where the start control is touched, sending a closing pulse instruction to a processor of a target protection channel of the target low-pressure heater, so that the processor of the target protection channel generates a closing valve instruction according to the closing pulse instruction, and sends the closing valve instruction to the isolation valve of the target low-pressure heater, the closing valve instruction being used for instructing the isolation valve to close, wherein the target protection channel is a logical channel simulating an actual signal transmission path of the target low-pressure heater;

[0010] in a case where the isolation valve is closed, adjusting an attribute value of the connection line to be an attribute value corresponding to a case where the isolation valve is in a closed state and is pre-set;

[0011] in a case where the check valve is closed along with the isolation valve, adjusting an attribute value of the closing limit switch icon of the check valve to be an attribute value corresponding to a case where the check valve is in a closed state and is pre-set;

[0012] sending an opening pulse instruction to the processor of the target protection channel, so that the processor of the target protection channel generates an opening valve instruction according to the opening pulse instruction, and sends the opening valve instruction to the isolation valve of the target low-pressure heater, the opening valve instruction being used for instructing the isolation valve to open;

[0013] in a case where the isolation valve is opened, adjusting the attribute value of the connection line to be an attribute value corresponding to a case where the isolation valve is in an open state and is pre-set, and the attribute value corresponding to the case where the isolation valve is in the open state is different from an attribute value corresponding to the case where the isolation valve is in the closed state;

[0014] In a case where the non-return valve follows the opening of the isolation valve, the attribute value of the close-limit switch icon of the non-return valve is adjusted to a preset attribute value corresponding to a case where the non-return valve is in an open state, and the attribute value corresponding to the case where the non-return valve is in the open state is different from an attribute value corresponding to a case where the non-return valve is in a closed state;

[0015] In a case where the start control is touched again, the detection on the target low-pressure heater is ended.

[0016] In the embodiments of the present application, since the target protection channel is a logical channel simulating an actual signal transmission path of the target low-pressure heater, when it is detected that a signal can be successfully transmitted in the target protection channel, it indicates that the actual signal transmission path of the target low-pressure heater can also successfully transmit a corresponding signal, i.e., it indicates that the actual signal transmission path of the target low-pressure heater passes the detection. In addition, when the technical solution disclosed in the embodiments of the present application is used for detection, a user can start the detection on the target low-pressure heater in a detection interface, view a connection line in the detection interface to determine whether the isolation valve is closed or opened, and view the close-limit switch icon of the non-return valve in the detection interface to determine whether the non-return valve is closed or opened. That is, since the user can realize the detection on the target low-pressure heater through one detection interface, and the operation in the detection interface can be realized by only a small number of staff, the detection efficiency is greatly improved. Since the staff involved are at the same place, the staff at the same place are less disturbed by the environment, so the disturbance to the detection result is reduced, and the accuracy of the detection result is improved.

[0017] In a second aspect, the embodiments of the present application provide a detection device for a low-pressure heater of a nuclear power plant, comprising:

[0018] A detection interface display module is configured to display a detection interface, the detection interface being configured to display a start control and a close-limit switch icon of a non-return valve of a target low-pressure heater, wherein the target low-pressure heater is a low-pressure heater currently in need of detection; the detection interface is further configured to display an icon of a steam turbine, an icon of an isolation valve of the target low-pressure heater, an icon of the non-return valve of the target low-pressure heater, and a connection line connecting the icon of the steam turbine and the icon of the isolation valve.

[0019] A close pulse instruction sending module is configured to, in a case where the start control is touched, send a close pulse instruction to a processor of a target protection channel of the target low-pressure heater, so that the processor of the target protection channel generates a close valve instruction according to the close pulse instruction, and sends the close valve instruction to the isolation valve of the target low-pressure heater, the close valve instruction being configured to instruct the isolation valve to close, wherein the target protection channel is a logical channel simulating an actual signal transmission path of the target low-pressure heater.

[0020] The attribute value first adjustment module of the connection line is configured to, in the case that the isolation valve is closed, adjust the attribute value of the connection line to a preset attribute value corresponding to the case that the isolation valve is in a closed state.

[0021] The attribute value first adjustment module of the limit switch icon is configured to, in the case that the non-return valve is closed following the isolation valve, adjust the attribute value of the closing limit switch icon of the non-return valve to a preset attribute value corresponding to the case that the non-return valve is in a closed state.

[0022] The open pulse instruction sending module is configured to send an open pulse instruction to a processor of the target protection channel, so that the processor of the target protection channel generates an open valve instruction according to the open pulse instruction, and sends the open valve instruction to the isolation valve of the target low-pressure heater, where the open valve instruction is used to instruct the isolation valve to open.

[0023] The attribute value second adjustment module of the connection line is configured to, in the case that the isolation valve is opened, adjust the attribute value of the connection line to a preset attribute value corresponding to the case that the isolation valve is in an opened state, and the attribute value corresponding to the case that the isolation valve is in the opened state is different from the attribute value corresponding to the case that the isolation valve is in the closed state.

[0024] The attribute value second adjustment module of the limit switch icon is configured to, in the case that the non-return valve is opened following the isolation valve, adjust the attribute value of the closing limit switch icon of the non-return valve to a preset attribute value corresponding to the case that the non-return valve is in an opened state, and the attribute value corresponding to the case that the non-return valve is in the opened state is different from the attribute value corresponding to the case that the non-return valve is in the closed state.

[0025] The detection ending module is configured to, in the case that the starting control is touched again, end the detection of the target low-pressure heater.

[0026] In a third aspect, an electronic device is provided, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor implements the method in the first aspect when executing the computer program.

[0027] In a fourth aspect, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to implement the method in the first aspect.

[0028] In a fifth aspect, a computer program product is provided, which, when running on an electronic device, causes the electronic device to perform the method in the first aspect.

[0029] It can be understood that the beneficial effects of the above-mentioned second aspect to the fifth aspect can be referred to the relevant description in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows.

[0031] Figure 1 is a flowchart of a detection method of a low-pressure heater of a nuclear power plant provided by an embodiment of the present application;

[0032] Figure 2 is a structural diagram of multiple low-pressure heaters provided by an embodiment of the present application;

[0033] Figure 3 is a schematic diagram of a detection interface provided by an embodiment of the present application;

[0034] Figure 4 is a result diagram of a detection device of a low-pressure heater of a nuclear power plant provided by an embodiment of the present application;

[0035] Figure 5 is a structural diagram of an electronic device provided by another embodiment of the present application. DETAILED DESCRIPTION

[0036] In the following description, specific details such as specific system structures, techniques, etc. are presented in order to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits and methods are omitted in order not to obscure the description of the present application with unnecessary details.

[0037] It should be understood that when used in the specification and the appended claims of the present application, the term "comprising" indicates the presence of the described features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0038] It should also be understood that the term "and / or" used in the specification and the appended claims of the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0039] In addition, in the description of the specification and the appended claims of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] Reference to "one embodiment" or "some embodiments" or "one implementation" or "some implementations" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrase "in one embodiment" or "in some embodiments" or "in other embodiments" or "in still other embodiments" or other similar phrases in the specification are not necessarily all referring to the same embodiment.

[0041] In a nuclear power plant, the main function of the low pressure heater is to heat the condensate water with steam extracted from the turbine to increase the temperature of the condensate water entering the deaerator, and then to increase the temperature of the water supplied to the steam generator.

[0042] The low pressure heater includes two important valves, namely, an isolation valve and a check valve. The main function of the isolation valve is to isolate the low pressure heater from other parts of the system for maintenance or to shut off fluid flow in an emergency, and it is installed close to the heater to prevent water from entering the extraction pipeline due to the rupture of the heat transfer tube or the blockage of the drain. The function of the check valve (also known as a non-return valve) is to prevent the reverse flow of fluid, i.e., to prevent the water or steam in the low pressure heater from flowing backward into the previous stage system, and it is installed as close to the turbine as possible to prevent the reverse flow of steam into the turbine during load rejection. Under normal operating conditions, the check valve opens with the opening of the isolation valve and closes with the closing of the isolation valve, so when the low pressure heater is detected, not only the response action of the isolation valve to the action of its starting button needs to be observed, but also the action of the check valve following the action of the isolation valve needs to be observed.

[0043] Since there is a certain distance between the starting button of the isolation valve and the isolation valve, and there is also a certain distance between the check valve and the isolation valve, when the starting button of the isolation valve is manually operated on site, the response action of the isolation valve is observed on site, and the following action of the check valve is observed on site, more workers need to be involved, the detection efficiency is low, and since the communication of the workers involved is directly on site, the environment on site may be noisy, which is easy to cause human error. Therefore, when the low pressure heater is detected by this method, the accuracy of the detection result obtained according to the communication result is also low.

[0044] In order to improve the detection efficiency and improve the accuracy of the detection result, the embodiments of the present application provide a detection method for a low pressure heater of a nuclear power plant.

[0045] In the detection method, a logical channel (i.e., a target protection channel) simulating an actual signal transmission path of a low-pressure heater (i.e., a target low-pressure heater) to be detected is set in advance, and a start control and a closing limit switch icon of a check valve of the target low-pressure heater are displayed on a detection interface, and a connection relationship between an isolation valve of the low-pressure heater and the check valve is displayed by using icons and connection lines. When the start control is touched, the isolation valve of the target low-pressure heater is instructed to perform a closing action or an opening action by communicating with a processor of the target protection channel, and an attribute value of the displayed connection line is set to a corresponding attribute value when the isolation valve is in a closing state or an opening state which is set in advance according to whether the isolation valve performs the closing action or the opening action, and an attribute value of the closing limit switch icon of the check valve is set to a corresponding attribute value when the check valve is in a closing state or an opening state which is set in advance according to whether the check valve follows the isolation valve to perform the closing action or the opening action.

[0046] The detection method of the low-pressure heater of the nuclear power plant provided by the embodiment of the present application will be described below in combination with the accompanying drawings.

[0047] Figure 1 A flowchart of the detection method of the low-pressure heater of the nuclear power plant provided by the embodiment of the present application is shown, and the detection method can be applied to an electronic device, which is described in detail as follows.

[0048] S11, a detection interface is displayed, the detection interface is used to display a start control and a closing limit switch icon of a check valve of a target low-pressure heater, wherein the target low-pressure heater is a low-pressure heater to be currently detected; and the detection interface is also used to display an icon of a steam turbine, an icon of an isolation valve of the target low-pressure heater, an icon of the check valve of the target low-pressure heater, and a connection line connecting the icon of the steam turbine and the icon of the isolation valve.

[0049] The start control is a control for starting detection, and optionally, the start control can be used to start detection and end detection, for example, when the start control is touched for the first time, the start control starts detection, and when the start control is touched again, the start control ends detection. Optionally, when the start control is displayed, the name of the start control is also displayed, for example, when the start control includes two functions of starting detection and ending detection, "start / stop" is displayed in the surrounding area of the start control. Optionally, in order to facilitate the user to intuitively know that the current has been started, when the start control is touched to start detection, the start control is lit, and when the start control is touched to end detection, the start control is stopped.

[0050] The target low-pressure heater is the low-pressure heater that needs to be tested. For example, if there are two low-pressure heaters in a nuclear power plant, namely low-pressure heater 1 and low-pressure heater 2, and the one that needs to be tested is low-pressure heater 1, then low-pressure heater 1 is the target low-pressure heater mentioned above.

[0051] In this embodiment, the detection interface is displayed when a user activates the function for detecting the low-pressure heater on an electronic device. Optionally, if the function of the low-pressure heater is activated through a corresponding application, the detection interface is displayed after the application is opened.

[0052] In this embodiment, the detection interface may not be divided into regions. In this case, the detection interface is equivalent to a single display area, which displays the start control, the check valve's closing limit switch icon, and the connection relationship between the turbine and the target low-pressure heater. However, to improve the readability of the displayed information, the detection interface can be divided into at least two regions. In this case, type-related information can be displayed in the same region for user convenience. For example, assuming the detection interface is divided into two regions, Region 1 and Region 2, Region 1 displays the start control, while Region 2 displays the check valve's closing limit switch icon, the check valve icon, the turbine icon, the isolation valve icon, and the connecting line linking the turbine icon, the check valve icon, and the isolation valve icon.

[0053] It should be noted that the connection relationship represented by the turbine icon, the target low-pressure heater icon, and the connecting line is the same as the actual connection relationship between the turbine and the target low-pressure heater, in order to improve the accuracy of the displayed connection relationship.

[0054] S12, when the aforementioned start control is touched, a shutdown pulse command is sent to the processor of the target protection channel of the target low-pressure heater, so that the processor of the target protection channel generates a valve closing command according to the shutdown pulse command, and sends the valve closing command to the isolation valve of the target low-pressure heater. The valve closing command is used to instruct the isolation valve to close. The target protection channel is a logic channel that simulates the actual signal transmission path of the target low-pressure heater.

[0055] The aforementioned shut-off pulse command is a short pulse signal, such as a 2-second (S) pulse signal. When the start control is touched, a 2-second pulse signal is emitted. After the processor of the target protection channel receives this pulse signal (i.e., the shut-off pulse command), it generates the corresponding shut-off command according to the preset shut-off command generation logic, and then sends the shut-off command to the isolation valve. The isolation valve will depressurize to perform the valve closing action.

[0056] In the embodiments of the present application, the target protection channel includes not only the signal transmission mode, but also the logic of processing the signals by the corresponding processor.

[0057] Optionally, to improve the accuracy of the detection result, the detection of the target low-pressure heater is load detection, and the load is the same as the load of the target low-pressure heater in actual operation.

[0058] S13, in the case of closing the isolation valve, the attribute value of the connection line is adjusted to the attribute value corresponding to the pre-set closed state of the isolation valve.

[0059] Specifically, if the electronic device receives the isolation valve closed state information sent by the processor of the target protection channel (the isolation valve closed state information is used to indicate that the isolation valve is in the closed state), it is determined that the isolation valve is closed. Optionally, considering that the target low-pressure heater is usually safe when the isolation valve is in the open state, and the open function detection will be performed after the closed function detection of the isolation valve, here the isolation valve is still determined to be closed when the isolation valve closed state information is not received within a timeout, so as to improve the detection efficiency. For example, if the waiting time for receiving the isolation valve closed state information exceeds the pre-set first waiting time, it is determined that the isolation valve is closed.

[0060] In the case that the electronic device determines that the isolation valve is closed, the attribute value of the connection line is set according to the pre-set attribute value corresponding to the closed state of the isolation valve. It should be pointed out that after the attribute value of the connection line is changed, the view presented by the connection line in the detection interface will change. For example, if the attribute value of the connection line is used to reflect the color of the connection line, the display color of the connection line will change correspondingly after the attribute value of the connection line is adjusted. If the attribute value of the connection line is used to reflect the shape (such as thickness) of the connection line, the shape of the connection line will change correspondingly after the attribute value of the connection line is adjusted.

[0061] Optionally, in the case of determining that the isolation valve is closed, the attribute value of the icon of the isolation valve of the target low-pressure heater can also be adjusted. If the attribute value of the icon of the isolation valve is used to reflect the color of the icon of the isolation valve, the icon of the isolation valve can be set to white by the corresponding attribute value. Of course, in actual cases, it can also be set to other colors, which are not limited here.

[0062] S14, in the case that the check valve is closed along with the isolation valve, the attribute value of the closing limit switch icon of the check valve is adjusted to the pre-set attribute value corresponding to the closed state of the check valve.

[0063] In normal circumstances, after the isolation valve is closed, the pressure difference before and after the check valve becomes small, and the valve disc is closed under the action of gravity, that is, the check valve will be closed following the closing of the isolation valve, and opened following the opening of the isolation valve. For example, within a preset time period after the isolation valve is closed, the check valve will also be closed.

[0064] In the embodiment of the present application, if the electronic device receives the check valve closed state information (the check valve closed state information is used to indicate that the check valve is in the closed state) sent by the processor of the target channel, the electronic device determines that the check valve is closed, or if the waiting time for the electronic device to receive the check valve closed state information exceeds the preset check valve waiting time, the electronic device determines that the check valve is closed. When the electronic device determines that the check valve is closed, the attribute value of the closing limit switch icon of the check valve will be adjusted according to the preset attribute value corresponding to the closed state of the check valve. For example, if the attribute value corresponding to the closed state of the check valve indicates that the closing limit switch icon of the check valve is lit, after the attribute value of the closing limit switch icon of the check valve is adjusted to the preset attribute value corresponding to the closed state of the check valve, the closing limit switch icon of the check valve displayed on the detection interface will be lit.

[0065] S15, send an opening pulse instruction to the processor of the target protection channel, so that the processor of the target protection channel generates an opening valve instruction according to the opening pulse instruction, and sends the opening valve instruction to the isolation valve of the target low-pressure heater, and the opening valve instruction is used to indicate that the isolation valve is opened.

[0066] After the electronic device detects the closing function of the isolation valve and the check valve, the opening function of the isolation valve and the check valve is continued to be detected. Specifically, the electronic device sends an opening pulse instruction to the processor of the target protection channel, and the opening pulse instruction is similar to the closing pulse instruction, which can also be a pulse signal with a relatively short time period. When the processor of the target protection channel receives the opening pulse instruction, the corresponding opening valve instruction is generated according to the preset generation logic of the opening valve instruction, and then the opening valve instruction is sent to the isolation valve, and the isolation valve will perform the action of opening the valve.

[0067] S16, in the case that the isolation valve is opened, the attribute value of the connection line is adjusted to the preset attribute value corresponding to the opened state of the isolation valve, and the attribute value corresponding to the opened state of the isolation valve is different from the attribute value corresponding to the closed state of the isolation valve.

[0068] Specifically, if the electronic device receives the isolation valve open state information sent by the processor of the target protection channel (the isolation valve open state information is used to indicate that the isolation valve is in the open state), it is determined that the isolation valve is open. In the case where the electronic device determines that the isolation valve is open, the attribute value of the connection line is set according to the preset attribute value corresponding to the open state of the isolation valve. Since the attribute value corresponding to the open state of the isolation valve is different from the attribute value corresponding to the closed state of the isolation valve, after the attribute value of the connection line is set according to the preset attribute value corresponding to the open state of the isolation valve, the view corresponding to the open state of the isolation valve and the view corresponding to the closed state of the isolation valve are different in the view presented by the detection interface. For example, if the attribute value of the connection line is used to reflect the color of the connection line, the color represented by the preset attribute value corresponding to the open state of the isolation valve can be orange, and the color represented by the preset attribute value corresponding to the closed state of the isolation valve can be gray, that is, different colors are used to represent different states of the isolation valve.

[0069] Optionally, in the case where the isolation valve is determined to be open, the attribute value of the icon of the target low-pressure heater isolation valve can also be adjusted. If the attribute value of the icon of the isolation valve is used to reflect the color of the icon of the isolation valve, the icon of the isolation valve can be set to blue through the corresponding attribute value. Of course, in actual cases, other colors can also be set, as long as they are different from the color corresponding to the closed state of the isolation valve, which is not limited here.

[0070] Optionally, considering that the isolation valve needs a certain time to open from the closed state, the attribute value of the icon of the isolation valve can be adjusted to be different from that when the isolation valve is fully closed and also different from that when the isolation valve is fully open during the time when the isolation valve is opening from the closed state. For example, when the isolation valve is fully open, the corresponding color of the icon of the isolation valve is blue, and when the isolation valve is fully closed, the corresponding color of the icon of the isolation valve is white. When the isolation valve is in the opening process, the icon of the isolation valve can be set to half blue and half white by adjusting the attribute value of the icon of the isolation valve, so that the user can more accurately know the current state of the isolation valve.

[0071] S17, in the case where the check valve follows the opening of the isolation valve, the attribute value of the closing limit switch icon of the check valve is adjusted to the preset attribute value corresponding to the open state of the check valve, and the attribute value corresponding to the open state of the check valve is different from the attribute value corresponding to the closed state of the check valve.

[0072] Specifically, if the electronic device receives the check valve open state information sent by the processor of the target channel (the check valve open state information is used to indicate that the check valve is in the open state), the electronic device determines that the check valve is open.

[0073] In the case that the electronic device determines that the check valve is opened, the attribute value of the closing limit switch icon of the check valve is set according to the preset attribute value corresponding to the case that the check valve is opened. Since the attribute value corresponding to the case that the check valve is opened is different from the attribute value corresponding to the case that the check valve is closed, after the attribute value of the closing limit switch icon of the check valve is set according to the preset attribute value corresponding to the case that the check valve is opened, the view presented by the detection interface of the closing limit switch icon of the check valve is different from the view corresponding to the case that the check valve is closed. For example, if the attribute value of the closing limit switch icon of the check valve is used to reflect whether the closing limit switch icon of the check valve is lighted, the preset attribute value corresponding to the case that the check valve is closed can indicate that the closing limit switch icon of the check valve is lighted, and the preset attribute value corresponding to the case that the check valve is opened can indicate that the closing limit switch icon of the check valve is stopped from being lighted, that is, the two states of being lighted and being stopped from being lighted are used to represent different states of the check valve.

[0074] It should be noted that the steps S12-S17 are sequential control steps (also referred to as sequential control programs).

[0075] S18, in the case that the start control is touched again, ending the detection of the target low-pressure heater this time.

[0076] Specifically, after the electronic device detects that the start control is touched again, it is indicated that the user wants to end the detection this time, and the detection of the target low-pressure heater is stopped. Here, the again touch refers to the re-touch of the start control after the detection is started by the start control, and after the detection is ended, if the target low-pressure heater needs to be detected again, the touch of the start control does not belong to the again touch, but belongs to the first touch.

[0077] Optionally, when the start control is touched again (i.e., the condition for exiting the sequential program is triggered), the sequential program will exit, and all instructions issued by the sequential program will be reset.

[0078] Optionally, considering that it is necessary to timely suspend the sequence control test in the test process, such as the steam turbine protection signal needs to timely close the isolation valve, or the program execution process appears abnormal and needs to timely open the isolation valve, therefore, in the embodiment of the application, in addition to ending the detection of the target low-pressure heater through the start control, it can also be selected to end through other ways. And, in order to avoid the conflict of the selected way, the priority of the instruction signal is defined in the sequence control program: the priority of the sequence control instruction (such as the instruction issued through the start control) is lower than the priority of the protection signal, and is lower than the priority of the manual open and close valve button instruction. For example, in the test process, the user can perform emergency intervention by operating the open and close buttons on the panel in the main control room. Since the priority of the protection signal is higher than the priority of the sequence control instruction, and the priority of the manual open and close valve button instruction is also higher than the priority of the sequence control instruction, therefore, when the electronic device receives the protection signal or the manual open and close valve instruction, the sequence control program automatically exits.

[0079] In the embodiment of the application, since the target protection channel is a logical channel simulating the actual signal transmission path of the target low-pressure heater, therefore, when it is detected that the signal can be successfully transmitted in the target protection channel, it indicates that the actual signal transmission path of the target low-pressure heater can also successfully transmit the corresponding signal, that is, it indicates that the actual signal transmission path of the target low-pressure heater passes the detection. In addition, when the technical solution disclosed in the embodiment of the application is used for detection, the user can start the detection of the target low-pressure heater in the detection interface, view the connection line in the detection interface to determine whether the isolation valve is closed or opened, and view the closing limit switch icon of the check valve in the detection interface to determine whether the check valve is closed or opened, that is, since the user can realize the detection of the target low-pressure heater through one detection interface, and the operation in the detection interface can be realized by only a small number of staff, therefore, the detection efficiency is greatly improved. And since the staff participating in the detection are all in the same place, and the staff in the same place are less disturbed by the environment, therefore, the disturbance to the detection result is reduced, thereby improving the accuracy of the detection result.

[0080] In some embodiments, the above detection interface is also used to display a closing timeout icon, and after the above sending of the closing pulse instruction to the processor of the target protection channel of the above target low-pressure heater, the method further comprises:

[0081] If the isolation valve closing state information sent by the processor of the target protection channel is not received within the preset first waiting time, the attribute value of the closing timeout icon is adjusted to the pre-set closing timeout attribute value, wherein the isolation valve closing state information is used to indicate that the isolation valve is closed.

[0082] When the electronic device receives the isolation valve closed state information sent by the processor of the target protection channel within a preset first waiting time length, it indicates that the isolation valve closing does not time out, otherwise, it indicates that the isolation valve closing times out.

[0083] Specifically, the first waiting time length is set according to the standard closing time length corresponding to the isolation valve, for example, the standard closing time length is taken as the first waiting time length. Alternatively, considering that the signal transmission needs a certain time, the first waiting time length can be set to a time length greater than the standard closing time length, and the difference can be determined according to the signal transmission distance. For example, assuming that the standard closing time length corresponding to the isolation valve is 4S, the first waiting time length can be set to 20S. The standard closing time length is the actual opening and closing time data of the valve measured by the instrument professional on site during the overhaul.

[0084] In the embodiment of the application, the time when the closing pulse instruction is sent is recorded, the time length of the current time and the time is counted, and it is judged whether the counted time length is greater than the first waiting time length. If it is greater than the first waiting time length and the isolation valve closed state information sent by the processor of the target protection channel has not been received, it indicates that the isolation valve closing times out. At this time, the attribute value of the closing timeout icon is adjusted to the pre-set closing timeout attribute value, which is beneficial to the user to know that the isolation valve has closed timeout.

[0085] Alternatively, the pre-set closing timeout attribute value can make the closing timeout icon in the lighted state to remind the user. Further, considering that the risk of closing the isolation valve is greater, when the isolation valve cannot be closed within the set time after the closing instruction is issued, the program will still continue to execute the opening valve logic to open the isolation valve.

[0086] In some embodiments, the detection interface is also used to display an opening timeout icon, and after the opening pulse instruction is sent to the processor of the target protection channel, the method further comprises:

[0087] If the isolation valve opening state information sent by the processor of the target protection channel is not received within a preset second waiting time length, the attribute value of the opening timeout icon is adjusted to a pre-set first opening timeout attribute value, wherein the isolation valve opening state information is used to indicate that the isolation valve is opened, and the first opening timeout attribute value is used to indicate that the isolation valve opening times out.

[0088] When the electronic device receives the isolation valve opening state information sent by the processor of the target protection channel within a preset second waiting time length, it indicates that the isolation valve opening does not time out, otherwise, it indicates that the isolation valve opening times out. Alternatively, in order to ensure the safety of detection, after it is judged that the isolation valve opening times out, it is temporarily stayed in the step of opening timeout judgment completion, so as to confirm whether there is a detection risk.

[0089] Specifically, the second waiting time length is set according to a standard opening time length corresponding to the isolation valve, for example, the standard opening time length is taken as the second waiting time length. Alternatively, considering that the signal transmission needs a certain time, the second waiting time length can be set to be greater than the standard opening time length, and the difference can be determined according to the signal transmission distance. For example, assuming that the standard opening time length corresponding to the isolation valve is 50S, the second waiting time length can be set to 60S.

[0090] In the embodiment, the time when the open pulse instruction is sent is recorded, the time length between the time and the current time is counted, and it is determined whether the counted time length is greater than the second waiting time length. If the counted time length is greater than the second waiting time length and the isolation valve open state information sent by the processor of the target protection channel has not been received, it indicates that the isolation valve opening is timed out. At this time, the attribute value of the open timeout icon is adjusted to the first open timeout attribute value set in advance, which is beneficial to the user to learn that the isolation valve is timed out.

[0091] Alternatively, the first open timeout attribute value set in advance can make the open timeout icon in the lighted state to remind the user.

[0092] In some embodiments, the detection interface is also used to display a parameter value of a to-be-monitored parameter, the parameter value of the to-be-monitored parameter is affected by the closing of the isolation valve and the opening of the isolation valve, and after the detection interface is displayed, the method further includes:

[0093] The parameter value of the to-be-monitored parameter is displayed on the detection interface.

[0094] In the embodiment, the ACO water level is taken as one of the to-be-monitored parameters because the ACO water level will rise after the isolation valve is closed and will fall after the isolation valve is opened. Similarly, the generator power is also taken as one of the to-be-monitored parameters because the ACO water level will affect the generator power. That is, in the embodiment, the parameter value of the ACO water level and / or the parameter value of the generator power can be displayed on the detection interface. Alternatively, considering that the parameters affected by the closing and opening of the isolation valve also include the average temperature of the primary loop and the high-pressure cylinder pressure, the to-be-monitored parameters can also include the average temperature of the primary loop and / or the high-pressure cylinder pressure, which are not limited here.

[0095] Because the parameter value of the to-be-monitored parameter is affected by the closing and opening of the isolation valve, in the embodiment, the parameter value of the to-be-monitored parameter is displayed on the detection interface, which is beneficial to assisting the user to determine whether the opening function and the closing function of the isolation valve are normal.

[0096] Optionally, when the interface is detected to display the parameter value of the parameter to be monitored, the parameter value of a specified time length can be displayed according to the user's needs, which can be 1 minute, 30 minutes, 1 hour, 24 hours, etc., which is not limited here.

[0097] In some embodiments, considering that the number of parameters to be monitored is greater than 1, the user can only want to display the parameter value of part of the parameters to be monitored, therefore, the selection item corresponding to the parameter to be monitored can be provided for the user to select. At this time, before the above-mentioned interface is detected to display the parameter value of the above-mentioned parameter to be monitored, it further includes:

[0098] The above-mentioned interface is detected to display the selection control of the above-mentioned parameter to be monitored.

[0099] Among them, the selection control of the parameter to be monitored usually includes the parameter identifier of the corresponding parameter to be monitored, so as to distinguish different parameters to be monitored by the user. The parameter identifier can be represented by parameter name or parameter code, for example, the selection control of the generator power marked with the parameter to be monitored can be used to represent the selection control of the parameter to be monitored corresponding to the generator power, when the selection control of the generator power marked is touched, it means that the user wants the interface to display the parameter value corresponding to the generator power.

[0100] Optionally, when the number of parameters to be monitored is small, all selection controls corresponding to the parameters to be monitored can be displayed on the detection interface, and when the number of parameters to be monitored is large, a drop-down menu can be displayed on the detection interface, and after the user drops down the drop-down menu, the detection interface displays the selection control of the corresponding parameter to be monitored, so as to make the detection interface more concise.

[0101] Correspondingly, the above-mentioned interface is detected to display the parameter value of the above-mentioned parameter to be monitored, including:

[0102] According to the selected selection control in the above-mentioned selection control of the above-mentioned parameter to be monitored, the parameter value of the parameter to be monitored corresponding to the selected selection control is displayed on the above-mentioned detection interface.

[0103] In the embodiments of the present application, since the electronic device can display the parameter value corresponding to the parameter to be monitored corresponding to the selected selection control according to the selection control selected by the user, the display flexibility of the detection interface is improved.

[0104] Optionally, considering that the nuclear power plant has high requirements for safety, in practice, at least two signal transmission paths are usually set for the target low-pressure heater. In order to realize comprehensive detection of the target low-pressure heater, simulation needs to be performed for all signal transmission paths. Simulating all signal transmission paths will obtain a number of target protection channels greater than 1, and then each target protection channel is detected. At this time, after adjusting the attribute value of the closing limit switch icon of the check valve to the attribute value corresponding to the pre-set opening state of the check valve, the method further comprises:

[0105] A1, detecting whether there is still the target protection channel that has not received the off pulse instruction.

[0106] Wherein, each target protection channel of the same target low-pressure heater is an independent and identical channel, and the number of target protection channels is mainly increased by adding redundant channels to improve the safety of the nuclear power plant.

[0107] Specifically, after adjusting the attribute value of the closing limit switch icon of the check valve to the attribute value corresponding to the pre-set opening state of the check valve, it indicates that the closing and opening of the isolation valve for a target channel are both detected, that is, the detection of the target low-pressure heater under the target channel is completed. Therefore, it is judged whether there is still the target protection channel that has not received the off pulse instruction, that is, whether there is the target protection channel of the target low-pressure heater that has not been detected, so as to reduce the probability of missing the detection of a certain target protection channel.

[0108] A2, in the case that there is still the target protection channel that has not received the off pulse instruction, performing a detection step on one of the target protection channels that has not received the off pulse instruction. The detection step comprises the following steps:

[0109] sending a close pulse instruction to the processor of the target protection channel, so that the processor of the target protection channel generates a close valve instruction according to the close pulse instruction, and sends the close valve instruction to the isolation valve of the target low-pressure heater; in the case that the isolation valve is closed, the attribute value of the connection line is adjusted to the attribute value corresponding to the case that the isolation valve is in the closed state which is set in advance; in the case that the check valve is closed following the isolation valve, the attribute value of the close limit switch icon of the check valve is adjusted to the attribute value corresponding to the case that the check valve is in the closed state which is set in advance; sending an open pulse instruction to the processor of the target protection channel, so that the processor of the target protection channel generates an open valve instruction according to the open pulse instruction, and sends the open valve instruction to the isolation valve of the target low-pressure heater, the open valve instruction being used to instruct the isolation valve to open; in the case that the isolation valve is opened, the attribute value of the connection line is adjusted to the attribute value corresponding to the case that the isolation valve is in the opened state which is set in advance; in the case that the check valve is opened following the isolation valve, the attribute value of the close limit switch icon of the check valve is adjusted to the attribute value corresponding to the case that the check valve is in the opened state which is set in advance.

[0110] Specifically, the detection of each target protection channel is the same, that is, the detection steps are the same as S12-S17, which will not be described here.

[0111] A3, returning to the step of detecting whether there is still the target protection channel that has not received the close pulse instruction and the subsequent steps until there is no target protection channel that has not received the close pulse instruction.

[0112] Specifically, after detecting all target protection channels, the step S18 can be performed.

[0113] In the embodiments of the present application, since each target protection channel of the target low-pressure heater is detected, that is, the target low-pressure heater is comprehensively detected, the accuracy of the obtained detection result is improved.

[0114] Optionally, in the case that the number of target protection channels is greater than 1, in order to enable the user to know which target protection channel is currently detected in time, icons corresponding to the target protection channels are set, and the icons of the target protection channels are displayed on the detection interface, and the target protection channel currently detected is indicated. For example, assuming that there are two target protection channels of the target low-pressure heater: target protection channel 1 and target protection channel 2, and the target protection channel currently detected is the target protection channel 1, the icon corresponding to the target protection channel 1 is lighted. Of course, in actual cases, the target protection icon currently detected can also be distinguished by displaying different colors, which is not limited here.

[0115] In some embodiments, after the opening function detection of the isolation valve is considered, it is necessary to continue to detect the undetected target protection channel, and the detection of one undetected target protection channel is to detect the closing function of the isolation valve first, but after the isolation valve changes from the open state to the closed state, it will cause the temperature of the feedwater entering the deaerator to decrease, and further cause the deaerator to increase the suction, which may cause the problem of difficult start of the unit, therefore, an open timeout confirmation control can be displayed on the detection interface, when the open timeout confirmation control is touched, it means that the user thinks that the opening timeout of the isolation valve at this time does not affect the current detection, and then the electronic device continues to detect, so as to improve the safety of the detection. That is, before the above-mentioned detection step of the above-mentioned target protection channel which exists and does not receive the closing pulse instruction, further comprising:

[0116] In a case where the time length between the time of sending the above-mentioned open pulse instruction and the time of receiving the isolation valve open state information sent by the processor of the above-mentioned target protection channel is greater than the preset second waiting time length, the attribute value of the open timeout confirmation control is adjusted to be consistent with the second open timeout attribute value set in advance, and the second open timeout attribute value is used to indicate the opening timeout of the isolation valve.

[0117] Correspondingly, the above-mentioned detection step of the above-mentioned target protection channel which exists and does not receive the closing pulse instruction, comprising:

[0118] In a case where the above-mentioned open timeout confirmation control is touched, the above-mentioned detection step of the above-mentioned target protection channel which exists and does not receive the closing pulse instruction is executed.

[0119] Since the time length between the time of sending the open pulse instruction and the time of receiving the isolation valve open state information sent by the processor of the target protection channel reflects the time length of the opening of the isolation valve, when it is judged that the time length of the opening of the isolation valve is greater than the preset second waiting time length, it means that the time length required for the opening of the isolation valve is relatively long, at this time, the attribute value of the open timeout confirmation control is adjusted to be consistent with the second open timeout attribute value set in advance, which is conducive to prompting the user to select whether to confirm the open timeout in time, and after the user confirms, the electronic device detects the next target protection channel, thereby improving the safety of the detection.

[0120] Optionally, the second open timeout attribute value set in advance can make the open timeout confirmation control in the lighted state to remind the user.

[0121] In some embodiments, the detection interface is further configured to display a continue detection confirmation control and a parameter value of the to-be-monitored parameter, the parameter value of the to-be-monitored parameter being affected by the closing of the isolation valve and the opening of the isolation valve, and the detection step is performed on one of the target protection channels that does not receive the off pulse instruction in the case that the open timeout confirmation control is touched.

[0122] In the case that the open timeout confirmation control is touched, a condition prompt for continuing the test is displayed on the detection interface, and the condition prompt includes prompting the user to check whether the displayed parameter value of the parameter meets the condition for continuing the test, and the continue detection confirmation control is touched when the condition for continuing the test is met.

[0123] In the case that the continue detection confirmation control is touched, the detection step is performed on one of the target protection channels that does not receive the off pulse instruction.

[0124] Specifically, the condition prompt can be displayed after it is determined that the isolation valve is open timeout. Of course, the condition prompt can also be displayed when the detection interface is opened, but a prompt control is added next to the condition prompt, and the prompt control is automatically identified, for example, the prompt control is automatically lit, when the electronic device determines that the isolation valve is open timeout.

[0125] In the embodiments of the present application, since the condition prompt is displayed on the detection interface, and the condition prompt contains the relevant explanation of the operation of the open timeout confirmation control, the user can obtain more information about the operation of the open timeout confirmation control. Moreover, since the detection is performed on one of the target protection channels that does not receive the off pulse instruction in the case that the displayed continue detection confirmation control is touched, the safety of the detection is improved.

[0126] In some embodiments, the detection interface is further configured to display an operation instruction for detecting the target low-pressure heater, and the operation instruction includes steps determined according to all steps from the step of sending the off pulse instruction to the processor of the target protection channel of the target low-pressure heater in the case that the start control is touched to the step of adjusting the attribute value of the closing limit switch icon of the check valve to the attribute value corresponding to the open state of the check valve when the attribute value of the closing limit switch icon of the check valve is pre-set.

[0127] Specifically, the corresponding steps can be determined according to the steps S12 to S17, and these steps are part or all of the information displayed by the detection interface as the operation instruction. Since the detection interface displays the operation instruction, the user can know the steps performed for detecting the target low-pressure heater.

[0128] Optionally, a prompt control is added beside each step of the operation instruction, and the prompt control is lighted when the electronic device executes the step, thereby further increasing the amount of information obtained by the user.

[0129] In some embodiments, considering that there can be multiple low-pressure heaters in a nuclear power plant, such as Figure 2 As shown, it is assumed that there are 7 low-pressure heaters in the nuclear power plant, but only low-pressure heaters 204, 205, 206, and 207 need to be detected, and the four low-pressure heaters all belong to target low-pressure heaters. Considering that it is more difficult and the probability of problems is higher when multiple target low-pressure heaters are detected at the same time, the corresponding detection time range can be set for different target low-pressure heaters in advance, and the corresponding target low-pressure heater is detected in the corresponding detection time range. That is, when the number of target low-pressure heaters is greater than 1, and the corresponding detection time range is set for each target low-pressure heater in advance, the processor of the target protection channel of the target low-pressure heater sends the off pulse instruction, which includes:

[0130] When the current time is within the detection time range of the target low-pressure heater, the off pulse instruction is sent to the target low-pressure heater.

[0131] The detection time range can be in units of days, weeks, or months, which is not limited here.

[0132] Specifically, if the detection time range is in units of days, for example, the detection time range of target low-pressure heater 1 is December 1, then the date of the current time should also be December 1 to detect the target low-pressure heater 1. Since the corresponding target low-pressure heater is detected according to the preset detection time range, the detection is more orderly, thereby facilitating the improvement of the accuracy of the obtained detection result.

[0133] To further describe the method for detecting the low-pressure heater of the nuclear power plant provided in the embodiments of the present application, the following will be described in conjunction with the detection interface of Figure 3 .

[0134] Figure 3 A schematic diagram of a detection interface provided in an embodiment of the present application is shown.

[0135] In Figure 3In the detection interface, the display of "target low-pressure heater 1 test" indicates that the current detection is performed on the target low-pressure heater. "001KG" indicates the start button; "ABP402VV" indicates the model of the isolation valve, "401VV" indicates the model of the check valve, "001KG ACK" indicates the continue detection confirmation control, and "401VV5" indicates the closing limit switch icon of the check valve.

[0136] The detection interface is mainly divided into two areas, one area is used to display operation instructions, and the other area is used to display prompt information.

[0137] For the area displaying operation instructions:

[0138] Among them, the operation instruction gives 8 instruction steps, and the leftmost of each instruction step corresponds to a prompt control. The prompt control is identified to prompt that the current execution is to the instruction step. For example, if the current action is to close the isolation valve, the prompt control of the instruction step corresponding to "01" is lit.

[0139] The area displaying operation instructions also includes a closing timeout icon (i.e. the circle corresponding to "closing timeout" displayed in the area), an opening timeout icon (i.e. the circle corresponding to "opening timeout" displayed in the area), and an opening timeout confirmation control (i.e. the circle corresponding to "confirmation" displayed in the area).

[0140] For the area displaying prompt information on the left side:

[0141] The user starts the detection or ends the detection by touching "001KG". When the detection for channel 1 is completed, the prompt control corresponding to "channel 1 OK" will be selected or lit. Similarly, when the detection for channel 2 is completed, the prompt control corresponding to "channel 2 OK" will be selected or lit.

[0142] The "parameter value display area" in the area is used to display the parameter value of the to-be-monitored parameter, such as the generator power and the ACO water level.

[0143] The "selection item display area" in the area is used to display the selection item of the to-be-monitored parameter, such as the monitoring point corresponding to the generator power and the monitoring point corresponding to the ACO water level. After the user selects the selection item corresponding to the to-be-monitored parameter in the selection item display area, the parameter value corresponding to the to-be-monitored parameter will be displayed in the "parameter value display area".

[0144] For the area displaying prompt information on the right side:

[0145] When the isolation valve 402VV is opened, the connection line in the area can be set to orange, and when the isolation valve 402VV is closed, the connection line in the area can be set to gray, and the attribute value of the prompt control corresponding to the closing limit switch icon of the check valve, that is, 401VV5, is adjusted to the attribute value corresponding to the closing state of the isolation valve.

[0146] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution, and the execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0147] Corresponding to the detection method of the low-pressure heater of the nuclear power plant described in the above embodiment, Figure 4 The structural block diagram of the detection device of the low-pressure heater of the nuclear power plant provided by the embodiments of the present application is shown, and only the parts related to the embodiments of the present application are shown for ease of description.

[0148] Referring to Figure 4 The detection device 4 of the low-pressure heater of the nuclear power plant is applied to an electronic device, which comprises a detection interface display module 41, a closing pulse instruction sending module 42, an attribute value first adjustment module 43 of a connection line, an attribute value first adjustment module 44 of a limit switch icon, an opening pulse instruction sending module 45, an attribute value second adjustment module 46 of a connection line, an attribute value second adjustment module 47 of a limit switch icon, and a detection end module 48. Wherein:

[0149] The detection interface display module 41 is used to display a detection interface, and the detection interface is used to display a start control and a closing limit switch icon of a check valve of a target low-pressure heater, wherein the target low-pressure heater is a low-pressure heater currently needing to be detected; and the detection interface is also used to display an icon of a steam turbine, an icon of an isolation valve of the target low-pressure heater, an icon of the check valve of the target low-pressure heater, and a connection line connecting the icon of the steam turbine and the icon of the isolation valve.

[0150] The closing pulse instruction sending module 42 is used to send a closing pulse instruction to a processor of a target protection channel of the target low-pressure heater in the case that the start control is touched, so that the processor of the target protection channel generates a closing valve instruction according to the closing pulse instruction, and sends the closing valve instruction to the isolation valve of the target low-pressure heater, and the closing valve instruction is used to instruct the isolation valve to close, wherein the target protection channel is a logical channel simulating an actual signal transmission path of the target low-pressure heater.

[0151] The attribute value first adjustment module 43 of the connection line is used to adjust the attribute value of the connection line to a pre-set attribute value corresponding to the closing state of the isolation valve in the case that the isolation valve is closed.

[0152] The attribute value of the limit switch icon is adjusted to a preset attribute value corresponding to the open state of the check valve.

[0153] The open pulse instruction sending module 45 is configured to send an open pulse instruction to a processor of the target protection channel, so that the processor generates an open valve instruction according to the open pulse instruction, and sends the open valve instruction to the isolation valve of the target low-pressure heater, where the open valve instruction is used to instruct the isolation valve to open.

[0154] The attribute value of the connection line is adjusted to a preset attribute value corresponding to the open state of the isolation valve, and the attribute value corresponding to the open state of the isolation valve is different from an attribute value corresponding to the closed state of the isolation valve.

[0155] The attribute value of the limit switch icon is adjusted to a preset attribute value corresponding to the open state of the check valve, and the attribute value corresponding to the open state of the check valve is different from an attribute value corresponding to the closed state of the check valve.

[0156] The detection end module 48 is configured to end the detection of the target low-pressure heater in a case where the start control is touched again.

[0157] In the embodiment, the target protection channel is a logical channel simulating an actual signal transmission path of the target low-pressure heater, so when it is detected that a signal can be successfully transmitted in the target protection channel, it indicates that the actual signal transmission path of the target low-pressure heater can also successfully transmit a corresponding signal, that is, the actual signal transmission path of the target low-pressure heater passes the detection. In addition, when the technical solution disclosed in the embodiment is used for detection, a user can start the detection of the target low-pressure heater in a detection interface, check the connection line in the detection interface to determine whether the isolation valve is closed or opened, and check the close limit switch icon of the check valve in the detection interface to determine whether the check valve is closed or opened. That is, the user can realize the detection of the target low-pressure heater through one detection interface, and the operation in the detection interface can be realized by only a small number of staff, so the detection efficiency is greatly improved. In addition, the staff involved are in the same place, and the staff in the same place are less affected by the environment, so the interference on the detection result is reduced, and the accuracy of the detection result is improved.

[0158] In some embodiments, the detection interface is further configured to display a close timeout icon, and the detection device 4 of the low-pressure heater of the nuclear power plant further comprises:

[0159] An attribute value adjustment module of the close timeout icon is configured to, after the sending of the close pulse instruction to the processor of the target protection channel of the target low-pressure heater, adjust an attribute value of the close timeout icon to a pre-set close timeout attribute value if no close state information of the isolation valve sent by the processor of the target protection channel is received within a pre-set first waiting time length, wherein the close state information of the isolation valve is used to indicate that the isolation valve is closed.

[0160] In some embodiments, the detection interface is further configured to display an open timeout icon, and the detection device 4 of the low-pressure heater of the nuclear power plant further comprises:

[0161] An attribute value adjustment module of the open timeout icon is configured to, after the sending of the open pulse instruction to the processor of the target protection channel, adjust an attribute value of the open timeout icon to a pre-set first open timeout attribute value if no open state information of the isolation valve sent by the processor of the target protection channel is received within a pre-set second waiting time length, wherein the open state information of the isolation valve is used to indicate that the isolation valve is opened, and the first open timeout attribute value is used to indicate that the isolation valve is opened for a timeout.

[0162] In some embodiments, the detection interface is further configured to display a parameter value of a to-be-monitored parameter, and the parameter value of the to-be-monitored parameter is affected by the closing of the isolation valve and the opening of the isolation valve, and the detection device 4 of the low-pressure heater of the nuclear power plant further comprises:

[0163] A parameter value display module is configured to, after the display of the detection interface, display the parameter value of the to-be-monitored parameter on the detection interface.

[0164] In some embodiments, the number of the to-be-monitored parameters is greater than 1, and the detection device 4 of the low-pressure heater of the nuclear power plant further comprises:

[0165] A selection control display module is configured to, before the display of the parameter value of the to-be-monitored parameter on the detection interface, display a selection control of the to-be-monitored parameter on the detection interface.

[0166] Correspondingly, the parameter value display module is specifically configured to:

[0167] According to the selected selection control of the selection control of the to-be-monitored parameter, the parameter value of the to-be-monitored parameter corresponding to the selected selection control is displayed on the detection interface.

[0168] In some embodiments, the number of the aforementioned target protection channels is greater than 1, and the aforementioned detection interface is also used to display icons for each of the aforementioned target protection channels. The detection device 4 for the low-pressure heater of the nuclear power plant further includes:

[0169] The module for determining whether an undetected target protection channel exists is used to detect whether, after adjusting the attribute value of the check valve's closing limit switch icon to the preset attribute value corresponding to when the check valve is in the open state, there is still a target protection channel that has not received a closing pulse command.

[0170] The undetected target protection channel detection module is used to perform a detection step on one of the target protection channels that has not received a shutdown pulse command when there are still target protection channels that have not received a shutdown pulse command. The detection step includes the following steps: sending a shutdown pulse command to the processor of the target protection channel, so that the processor of the target protection channel generates a valve closing command according to the shutdown pulse command, and sends the valve closing command to the isolation valve of the target low-pressure heater; when the isolation valve is closed, adjusting the attribute value of the connection line to the attribute value corresponding to the isolation valve being in the closed state; when the check valve closes along with the isolation valve, adjusting the check valve... The attribute value of the closed limit switch icon is set to the attribute value corresponding to the closed state of the aforementioned check valve; an opening pulse command is sent to the processor of the aforementioned target protection channel, so that the processor of the aforementioned target protection channel generates an opening valve command according to the opening pulse command, and sends the opening valve command to the isolation valve of the aforementioned target low-pressure heater, the opening valve command being used to instruct the aforementioned isolation valve to open; when the aforementioned isolation valve is open, the attribute value of the aforementioned connecting line is adjusted to the attribute value corresponding to the open state of the aforementioned isolation valve; when the aforementioned check valve opens along with the aforementioned isolation valve, the attribute value of the closed limit switch icon of the aforementioned check valve is adjusted to the attribute value corresponding to the open state of the aforementioned check valve;

[0171] The loop judgment module is used to return to the steps of detecting whether there are still target protection channels that have not received the shut-off pulse command and subsequent steps, until there are no target protection channels that have not received the shut-off pulse command.

[0172] In some embodiments, the detection interface is further used to display an open timeout confirmation control, and the detection device 4 for the low-pressure heater of the nuclear power plant further includes:

[0173] The attribute value adjustment module of the open timeout confirmation control is configured to, in a case where a time length between a time point of sending the open pulse instruction and a time point of receiving the open state information of the isolation valve sent by the processor of the target protection channel is greater than a preset second waiting time length before the detection step is performed on the target protection channel for which the off pulse instruction is not received among the existing target protection channels, adjust an attribute value of the open timeout confirmation control to be consistent with a second open timeout attribute value, and the second open timeout attribute value is used to indicate an open timeout of the isolation valve.

[0174] Correspondingly, the undetected target protection channel detection module is specifically configured to:

[0175] In a case where the open timeout confirmation control is touched, the detection step is performed on the target protection channel for which the off pulse instruction is not received among the existing target protection channels.

[0176] In some embodiments, the detection interface is further configured to display a continue detection confirmation control and a parameter value of a to-be-monitored parameter, and the parameter value of the to-be-monitored parameter is affected by closing of the isolation valve and opening of the isolation valve, and the detection step is performed on the target protection channel for which the off pulse instruction is not received among the existing target protection channels in a case where the open timeout confirmation control is touched, including:

[0177] In a case where the open timeout confirmation control is touched, a condition prompt for continuing the test is displayed on the detection interface, and the condition prompt includes prompting a user to check whether the displayed parameter value of the monitored parameter meets a condition for continuing the test, and the continue detection confirmation control is touched when the condition for continuing the test is met.

[0178] In a case where the continue detection confirmation control is touched, the detection step is performed on the target protection channel for which the off pulse instruction is not received among the existing target protection channels.

[0179] In some embodiments, the detection interface is further configured to display an operation instruction for detecting the target low-pressure heater, and the operation instruction includes a step determined according to all steps from the step of sending the off pulse instruction to the processor of the target protection channel of the target low-pressure heater in a case where the start control is touched to the step of adjusting the attribute value of the closing limit switch icon of the check valve to a preset attribute value corresponding to an open state of the check valve.

[0180] In some embodiments, the number of target low-pressure heaters is greater than 1, and a corresponding detection time range is preset for each target low-pressure heater, and the off pulse instruction sending module is specifically configured to, when sending the off pulse instruction to the processor of the target protection channel of the target low-pressure heater:

[0181] If the current time falls within the detection time range corresponding to the aforementioned target low-pressure heater, a shutdown pulse command is sent to the aforementioned target low-pressure heater.

[0182] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0183] Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 5 As shown, the electronic device 5 of this embodiment includes: at least one processor 50 ( Figure 5 The diagram shows only one processor, memory 51, and computer program 52 stored in the memory 51 and executable on at least one processor 50, wherein the processor 50 executes the computer program 52 to implement the steps in any of the above method embodiments.

[0184] The electronic device 5 can be a desktop computer, laptop, handheld computer, or cloud server, etc. This electronic device may include, but is not limited to, a processor 50 and a memory 51. Those skilled in the art will understand that... Figure 5 This is merely an example of electronic device 5 and does not constitute a limitation on electronic device 5. It may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, it may also include input / output devices, network access devices, etc.

[0185] The processor 50 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0186] The memory 51 can be an internal storage unit of the electronic device 5, such as a hard disk or a memory of the electronic device 5 in some embodiments. The memory 51 can also be an external storage device of the electronic device 5, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 5 in some other embodiments. Further, the memory 51 can include both the internal storage unit and the external storage device of the electronic device 5. The memory 51 is used to store an operating system, an application program, a boot loader, data, and other programs, such as program codes of the computer program, etc. The memory 51 can also be used to temporarily store data that has been output or is to be output.

[0187] It should be clearly understood by those skilled in the art that, for the convenience and brevity of description, only the above-mentioned division of functional units and modules is taken as an example, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction, and do not limit the protection scope of the present application. The specific working process of the units and modules in the system can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0188] The embodiments of the present application also provide a network device, which comprises at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, wherein the processor implements the steps in any of the method embodiments described above when executing the computer program.

[0189] The embodiments of the present application also provide a computer readable storage medium, which stores a computer program, wherein the computer program is executable by a processor to implement the steps in any of the method embodiments described above.

[0190] The embodiments of the present application provide a computer program product, which, when executed on an electronic device, enables the electronic device to implement the steps in any of the method embodiments described above.

[0191] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the present application can implement all or part of the processes in the above-mentioned embodiment methods through a computer program to instruct relevant hardware to complete, and the computer program can be stored in a computer readable storage medium. When the computer program is executed by a processor, the steps of each method embodiment described above can be implemented. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms. The computer readable medium at least includes any entity or device capable of carrying the computer program code to the photographing device / electronic device, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium. For example, U disk, mobile hard disk, magnetic disk or optical disk, etc. In some jurisdictions, according to legislation and patent practice, the computer readable medium can not be an electrical carrier signal and a telecommunication signal.

[0192] In the above embodiments, the description of each embodiment has its own focus, and the parts not described or recorded in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0193] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be realized by electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0194] In the embodiments provided by the present application, it should be understood that the disclosed apparatus / network device and method can be implemented in other ways. For example, the above-described apparatus / network device embodiments are merely schematic, for example, the division of the modules or units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed each other can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0195] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may also be distributed to multiple network units. Part or all of the units can be selected to achieve the purpose of the embodiment scheme according to actual needs.

[0196] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A method for testing low-pressure heaters in nuclear power plants, characterized in that, include: The display interface shows the start control and the closing limit switch icon of the check valve of the target low-pressure heater, wherein the target low-pressure heater is the low-pressure heater that needs to be tested. The display interface also shows the turbine icon, the isolation valve icon of the target low-pressure heater, the check valve icon of the target low-pressure heater, and the connecting line connecting the turbine icon and the isolation valve icon. When the start control is touched, a shutdown pulse command is sent to the processor of the target protection channel of the target low-pressure heater, so that the processor of the target protection channel generates a valve closing command according to the shutdown pulse command and sends the valve closing command to the isolation valve of the target low-pressure heater. The valve closing command is used to instruct the isolation valve to close. The target protection channel is a logic channel that simulates the actual signal transmission path of the target low-pressure heater. When the isolation valve is closed, adjust the attribute value of the connection line to the preset attribute value corresponding to the isolation valve being in the closed state; When the check valve closes along with the isolation valve, adjust the attribute value of the check valve's closing limit switch icon to the preset attribute value corresponding to when the check valve is in the closed state; An open pulse command is sent to the processor of the target protection channel, so that the processor of the target protection channel generates an open valve command according to the open pulse command, and sends the open valve command to the isolation valve of the target low-pressure heater, the open valve command being used to instruct the isolation valve to open; When the isolation valve is open, the attribute value of the connection line is adjusted to the attribute value corresponding to the isolation valve in the open state, and the attribute value corresponding to the isolation valve in the open state is different from the attribute value corresponding to the isolation valve in the closed state. When the check valve opens along with the isolation valve, the attribute value of the check valve's closing limit switch icon is adjusted to the preset attribute value corresponding to the check valve in the open state, and the attribute value corresponding to the check valve in the open state is different from the attribute value corresponding to the check valve in the closed state. If the start control is touched again, the current detection of the target low-pressure heater will end.

2. The detection method for low-pressure heaters in nuclear power plants as described in claim 1, characterized in that, The detection interface is also used to display a shutdown timeout icon, and after sending a shutdown pulse command to the processor of the target protection channel of the target low-pressure heater, it further includes: If no isolation valve closing status information is received from the processor of the target protection channel within the preset first waiting time, the attribute value of the closing timeout icon is adjusted to a preset closing timeout attribute value, wherein the isolation valve closing status information is used to indicate that the isolation valve is closed.

3. The detection method for low-pressure heaters in nuclear power plants as described in claim 1, characterized in that, The detection interface is also used to display an on timeout icon, and after sending the on pulse command to the processor of the target protection channel, it further includes: If no isolation valve open status information is received from the processor of the target protection channel within the preset second waiting time, the attribute value of the open timeout icon is adjusted to a preset first open timeout attribute value, wherein the isolation valve open status information is used to indicate that the isolation valve is open, and the first open timeout attribute value is used to indicate that the isolation valve has timed out.

4. The detection method for low-pressure heaters in nuclear power plants as described in claim 1, characterized in that, The detection interface is also used to display the parameter value of the parameter to be monitored, the parameter value of which is affected by the closing and opening of the isolation valve. After displaying the detection interface, the interface further includes: The detection interface displays the parameter value of the parameter to be monitored.

5. The detection method for low-pressure heaters in nuclear power plants as described in claim 4, characterized in that, The number of parameters to be monitored is greater than 1, and before displaying the parameter values ​​of the parameters to be monitored on the detection interface, the method further includes: The detection interface displays a selection control for the parameter to be monitored. The display of the parameter value of the monitored parameter on the detection interface includes: Based on the selected control among the selected controls for the parameters to be monitored, the parameter value of the parameter to be monitored corresponding to the selected control is displayed on the detection interface.

6. The method for testing a low-pressure heater in a nuclear power plant as described in any one of claims 1 to 5, characterized in that, The number of target protection channels is greater than 1. The detection interface is also used to display icons for each target protection channel. After adjusting the attribute value of the check valve's closing limit switch icon to a preset attribute value corresponding to when the check valve is in the open state, the interface further includes: Detect whether the target protection channel still does not receive the shutdown pulse command; If there are still target protection channels that have not received a shutdown pulse command, a detection step is performed on one of the target protection channels that has not received a shutdown pulse command. The detection step includes the following steps: A shutdown pulse command is sent to the processor of the target protection channel, so that the processor of the target protection channel generates a valve shut-off command according to the shutdown pulse command, and sends the valve shut-off command to the isolation valve of the target low-pressure heater; When the isolation valve is closed, adjust the attribute value of the connection line to the preset attribute value corresponding to the isolation valve being in the closed state; When the check valve closes along with the isolation valve, adjust the attribute value of the check valve's closing limit switch icon to the preset attribute value corresponding to when the check valve is in the closed state; An open pulse command is sent to the processor of the target protection channel, so that the processor of the target protection channel generates an open valve command according to the open pulse command, and sends the open valve command to the isolation valve of the target low-pressure heater, the open valve command being used to instruct the isolation valve to open; When the isolation valve is open, adjust the attribute value of the connection line to the preset attribute value corresponding to when the isolation valve is in the open state; When the check valve opens along with the isolation valve, adjust the attribute value of the check valve's closing limit switch icon to the preset attribute value corresponding to when the check valve is in the open state; Return to the step of detecting whether there are still target protection channels that have not received the shutdown pulse command, and subsequent steps, until there are no target protection channels that have not received the shutdown pulse command.

7. The detection method for low-pressure heaters in nuclear power plants as described in claim 6, characterized in that, The detection interface is also used to display an on / off timeout confirmation control, and before performing the detection step on one of the target protection channels that has not received an off pulse command, it also includes: If the time interval between sending the open pulse command and receiving the isolation valve open status information sent by the processor of the target protection channel is greater than a preset second waiting time, the attribute value of the open timeout confirmation control is adjusted to be consistent with the preset second open timeout attribute value, which is used to indicate that the isolation valve has been opened for a timeout. The step of performing a detection step on one of the target protection channels that did not receive a shutdown pulse command includes: If the timeout confirmation control is touched, a detection step is performed on one of the target protection channels that has not received a shutdown pulse command.

8. The detection method for low-pressure heaters in nuclear power plants as described in claim 7, characterized in that, The detection interface is also used to display the continued detection confirmation control and the parameter values ​​of the monitored parameters. The parameter values ​​of the monitored parameters are affected by the closing and opening of the isolation valve. When the open timeout confirmation control is touched, a detection step is performed on one of the target protection channels that has not received a shutdown pulse command, including: When the timeout confirmation control is touched, a condition prompt for continuing the test is displayed on the detection interface. The condition prompt includes prompting the user to check whether the parameter value of the displayed monitoring parameter meets the condition for continuing the test. If the condition for continuing the test is met, the user can touch the continue detection confirmation control. If the continued detection confirmation control is touched, a detection step is performed on one of the target protection channels that has not received the shutdown pulse command.

9. The method for testing a low-pressure heater in a nuclear power plant as described in any one of claims 1 to 5, characterized in that, The detection interface is also used to display operation instructions for detecting the target low-pressure heater. The operation instructions include steps determined according to all steps from the step of sending a shutdown pulse command to the processor of the target protection channel of the target low-pressure heater when the start control is touched to the step of adjusting the attribute value of the check valve's closing limit switch icon to the attribute value corresponding to the pre-set check valve in the open state.

10. The method for testing a low-pressure heater in a nuclear power plant as described in any one of claims 1 to 5, characterized in that, The number of target low-pressure heaters is greater than 1, and a corresponding detection time range is pre-set for each target low-pressure heater. Sending a shutdown pulse command to the processor of the target protection channel of the target low-pressure heater includes: If the current time is within the detection time range corresponding to the target low-pressure heater, send a shutdown pulse command to the target low-pressure heater.

11. A detection device for a low-pressure heater in a nuclear power plant, characterized in that, include: The detection interface display module is used to display the detection interface, which displays the start control and the closing limit switch icon of the check valve of the target low-pressure heater, wherein the target low-pressure heater is the low-pressure heater that needs to be detected. The detection interface is also used to display the turbine icon, the isolation valve icon of the target low-pressure heater, the check valve icon of the target low-pressure heater, and the connecting line connecting the turbine icon and the isolation valve icon. The off pulse command sending module is used to send an off pulse command to the processor of the target protection channel of the target low-pressure heater when the start control is touched, so that the processor of the target protection channel generates a valve closing command according to the off pulse command and sends the valve closing command to the isolation valve of the target low-pressure heater. The valve closing command is used to instruct the isolation valve to close. The target protection channel is a logic channel that simulates the actual signal transmission path of the target low-pressure heater. The first adjustment module for the attribute value of the connecting line is used to adjust the attribute value of the connecting line to the preset attribute value corresponding to the isolation valve when it is closed, when the isolation valve is closed. The first adjustment module for the attribute value of the limit switch icon is used to adjust the attribute value of the check valve's closing limit switch icon to a preset attribute value corresponding to the check valve being in the closed state when the check valve is closed along with the isolation valve. An open pulse command sending module is used to send an open pulse command to the processor of the target protection channel, so that the processor of the target protection channel generates an open valve command according to the open pulse command, and sends the open valve command to the isolation valve of the target low-pressure heater, wherein the open valve command is used to instruct the isolation valve to open; The second adjustment module for the attribute value of the connecting line is used to adjust the attribute value of the connecting line to a preset attribute value corresponding to the isolation valve when the isolation valve is open, and the attribute value corresponding to the isolation valve when the isolation valve is open is different from the attribute value corresponding to the isolation valve when the isolation valve is closed. The second adjustment module for the attribute value of the limit switch icon is used to adjust the attribute value of the check valve's closing limit switch icon to a preset attribute value corresponding to the check valve in the open state when the check valve opens along with the isolation valve, and the attribute value corresponding to the check valve in the open state is different from the attribute value corresponding to the check valve in the closed state. The detection end module is used to end the current detection of the target low-pressure heater when the start control is touched again.

12. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method as described in any one of claims 1 to 10.

13. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 10.

14. A computer program product, characterized in that, Includes a computer program, which, when run, causes the method as described in any one of claims 1 to 10 to be performed.

Images