Low-pressure heater liquid level measurement and control method and device, storage medium and program product

Abstract

The invention relates to a low-pressure heater liquid level measurement and control method and device, a storage medium and a program product. The method is applied to a low-pressure heater liquid level measurement and control device and comprises the steps that the low-pressure heater liquid level measurement and control device is connected into a to-be-measured low-pressure heater, and real-time liquid level measurement is conducted on the to-be-measured low-pressure heater to obtain an effective liquid level value of the to-be-measured low-pressure heater; under the condition that the effective liquid level value exceeds a preset first safety value, an accident drainage door of the low-pressure heater is controlled to be opened; and under the condition that the effective liquid level value exceeds a preset second safety value, a bypass switch of the low-pressure heater is controlled to be turned on. Therefore, clear boundary values and corresponding solutions are set in the process of detecting the faults of the low-pressure heater, the liquid level of the low-pressure heater is effectively controlled through a multi-stage protection mechanism, equipment damage and system shutdown caused by the too high liquid level are prevented, and the safety and stability of the system are guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the field of thermal power generation technology, and in particular to a method, device, storage medium and program product for measuring and controlling the liquid level of a low-pressure heater. Background Art

[0002] The low-pressure heater is a device used in the heat recovery system of a thermal power plant. It can reduce the heat loss when steam enters the turbine by preheating the feed water, thereby improving the cycle efficiency of the turbine and thus improving the efficiency of the entire power generation cycle. If the low-pressure heater fails, it will affect the stable operation and safety of the entire generator set. Therefore, it is necessary to frequently measure the liquid level of the low-pressure heater in order to detect and handle abnormalities in a timely manner.

[0003] In the related art, a liquid level measuring device is usually installed for the low-pressure heater, and the data output by the liquid level measuring device is used to determine whether the low-pressure heater is abnormal. However, in actual application, this method has poor accuracy and timeliness in determining whether the low-pressure heater is abnormal. Summary of the invention

[0004] The main purpose of the present disclosure is to provide a low-pressure heater liquid level measurement and control method, device, storage medium and program product, aiming to solve the above-mentioned technical problems.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for measuring and controlling the liquid level of a low-pressure heater is provided. The method is applied to a device for measuring and controlling the liquid level of a low-pressure heater, and includes: In response to the low-pressure heater liquid level measurement and control device being connected to the low-pressure heater to be tested, real-time liquid level measurement is performed on the low-pressure heater to be tested to obtain an effective liquid level value of the low-pressure heater to be tested; When the effective liquid level value exceeds a preset first safety value, controlling the emergency drain valve of the low-pressure heater to open; When the effective liquid level value exceeds a preset second safety value, the bypass switch of the low-pressure heater is controlled to open.

[0006] Optionally, the real-time liquid level measurement of the low-pressure heater to be tested to obtain an effective liquid level value of the low-pressure heater to be tested includes: Generate multiple liquid level detection signals at the same time to obtain the liquid level value corresponding to each liquid level detection signal; Determining a valid detection signal among the liquid level detection signals according to a deviation value between the liquid level values ​​and a preset deviation threshold; The effective liquid level value is determined according to the liquid level value corresponding to the effective detection signal.

[0007] Optionally, determining the effective liquid level value according to the liquid level value corresponding to the effective detection signal includes: If there are multiple valid detection signals, the average value of the liquid level values ​​corresponding to the valid detection signals is determined as the valid liquid level value.

[0008] Optionally, determining the effective liquid level value according to the liquid level value corresponding to the effective detection signal includes: If there are multiple valid detection signals, the liquid level values ​​corresponding to the respective valid detection signals are determined as the valid liquid level values; When the effective liquid level value exceeds a preset first safety value, controlling the emergency drain valve of the low-pressure heater to open comprises: Determine the number of effective liquid level values ​​exceeding the first safety value, and if the ratio of the number to the total number of effective liquid level values ​​reaches a first preset ratio, control the emergency drain valve of the low-pressure heater to open; When the effective liquid level value exceeds a preset second safety value, controlling the bypass switch of the low-pressure heater to open includes: The number of effective liquid level values ​​exceeding the second safety value is determined, and if the ratio of the number to the total number of effective liquid level values ​​reaches a second preset ratio, the bypass switch of the low-pressure heater is controlled to open.

[0009] Optionally, the method further comprises: The effective liquid level value is displayed.

[0010] Optionally, the method further comprises: When there is no valid detection signal in each of the liquid level detection signals, the low-pressure heater liquid level measurement and control device is controlled to be disconnected from the low-pressure heater to be tested, and a fault alarm is issued.

[0011] According to a second aspect of an embodiment of the present disclosure, there is provided a low-pressure heater liquid level measurement and control device, comprising: a controller; The controller is used to: In response to the low-pressure heater liquid level measurement and control device being connected to the low-pressure heater to be tested, real-time liquid level measurement is performed on the low-pressure heater to be tested to obtain an effective liquid level value of the low-pressure heater to be tested; When the effective liquid level value exceeds a preset first safety value, controlling the emergency drain valve of the low-pressure heater to open; When the effective liquid level value exceeds a preset second safety value, the bypass switch of the low-pressure heater is controlled to open.

[0012] Optionally, the device further comprises: a plurality of liquid level measuring components; Wherein, the controller is in communication connection with each of the liquid level metering components, and is used for: Controlling each of the liquid level metering components to simultaneously generate a liquid level detection signal to obtain a liquid level value corresponding to each liquid level detection signal; Determining a valid detection signal among the liquid level detection signals according to a deviation value between the liquid level values ​​and a preset deviation threshold; The effective liquid level value is determined according to the liquid level value corresponding to the effective detection signal.

[0013] Optionally, the device further comprises: a display window; Wherein, the controller is connected in communication with the display window and is used for: The display window is controlled to display the effective liquid level value.

[0014] According to a third aspect of an embodiment of the present disclosure, a non-temporary computer-readable storage medium is provided, on which a computer program is stored. When the program is executed by a processor, the steps of the low-pressure heater liquid level measurement and control method provided in the first aspect of the present disclosure are implemented.

[0015] According to a fourth aspect of an embodiment of the present disclosure, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the steps of the low-pressure heater liquid level measurement and control method provided in the first aspect of the present disclosure.

[0016] The above technical solution proposed in the embodiment of the present disclosure measures the liquid level of the low-pressure heater to be tested in real time through a liquid level measurement and control device to obtain an effective liquid level value; when the effective liquid level value exceeds the preset first safety value, the emergency drain valve of the low-pressure heater is controlled to open to quickly drain excess liquid; when the effective liquid level value exceeds the preset second safety value, the bypass switch of the low-pressure heater is controlled to open and switch to the bypass system to ensure the safe operation of the system. In this way, clear boundary values ​​and corresponding solutions are set in the process of detecting low-pressure heater failures, and the liquid level of the low-pressure heater is effectively controlled through a multi-level protection mechanism to prevent equipment damage and system shutdown caused by excessively high liquid levels, thereby ensuring the safety and stability of the system.

[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 The figure is a flow chart of a method for measuring and controlling the liquid level of a low-pressure heater according to an exemplary embodiment.

[0019] Figure 2The figure is a block diagram of a low-pressure heater liquid level measurement and control device according to an exemplary embodiment.

[0020] Figure 3 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0021] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0022] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the location and with the authorization given by the owner of the corresponding device.

[0023] The low-pressure heater is a device used in the heat recovery system of a thermal power plant. It can reduce the heat loss when steam enters the turbine by preheating the feed water, thereby improving the cycle efficiency of the turbine and thus improving the efficiency of the entire power generation cycle. At present, the low-pressure heaters of the generator sets of large thermal power plants are composed of a water chamber, a pipe system and a shell. The pipe system is arranged in an S shape inside the low-pressure heater. Water passes through the pipe system and steam passes through the shell. The high-temperature and high-pressure steam feed water is heated and flows to the next heat exchange device. Outside the shell, the external water-side pipe system and steam-side pipe system of the low-pressure heater are connected to the liquid level control switch to control the liquid level of the low-pressure heater. Since the low-pressure heater is very important in the thermal power generating unit, if a fault occurs, it will affect the stable operation of the unit, and the low-pressure heater can only be repaired and maintained under shutdown conditions. Therefore, it is necessary to measure the liquid level of the low-pressure heater frequently so as to detect and deal with abnormalities in time.

[0024] In the related art, a liquid level measuring device is usually installed for the low-pressure heater, and the data output by the liquid level measuring device is used to determine whether the low-pressure heater is abnormal. However, in actual application, this method has poor accuracy and timeliness in determining the abnormality of the low-pressure heater. Specifically, when the data output by the liquid level measuring device of the low-pressure heater is abnormal, the staff is usually required to first determine the approximate discharge demand based on the above abnormal data, and turn on the liquid level control switch of the low-pressure heater to discharge the liquid. However, the liquid level control switch in the related art is usually a mechanical or float switch, which has limited response speed and accuracy, and it is difficult to control the specific amount of liquid discharged.

[0025] In addition, when the data output by the liquid level measuring device of the low-pressure heater is abnormal, it is impossible to directly determine whether the liquid level measuring device is faulty or the low-pressure heater being measured is faulty. Subsequent analysis is required to determine the corresponding solution. If the analysis time is long or the analysis is incorrect, it is easy to cause equipment accidents, and in severe cases it may even cause equipment damage and casualties.

[0026] To this end, the present disclosure provides a low-pressure heater liquid level measurement and control method, device, storage medium and program product. The specific implementation methods of the present disclosure are described in detail below in conjunction with the accompanying drawings.

[0027] Figure 1 FIG. 1 is a flow chart showing a method for measuring and controlling the liquid level of a low-pressure heater according to an exemplary embodiment. Figure 1 As shown, the low-pressure heater liquid level measurement and control method is used in a low-pressure heater liquid level measurement and control device. Specifically, the original liquid level control switch of the low-pressure heater to be tested can be removed, and the low-pressure heater liquid level measurement and control device is connected to the accident drain valve and bypass switch of the low-pressure water heater to be tested. The low-pressure heater liquid level measurement and control method includes the following S101-S103.

[0028] In S101 , in response to the low-pressure heater liquid level measurement and control device being connected to the low-pressure heater to be tested, real-time liquid level measurement is performed on the low-pressure heater to be tested to obtain an effective liquid level value of the low-pressure heater to be tested.

[0029] In one embodiment of the present disclosure, after the low-pressure heater liquid level measuring and control device is connected to the low-pressure heater to be tested, the liquid level metering component in the low-pressure heater liquid level measuring and control device can measure the liquid height in the low-pressure heater to be tested in real time, and the liquid height data is transmitted to the controller of the low-pressure heater liquid level measuring and control device. The controller processes the liquid height data to obtain the effective liquid level value of the low-pressure heater to be tested.

[0030] In S102, when the effective liquid level value exceeds a preset first safety value, the emergency drain valve of the low-pressure heater is controlled to open.

[0031] In one embodiment of the present disclosure, the emergency drain valve is an emergency water discharge device of a low-pressure heater, which can quickly drain excess water and control the amount of water in the low-pressure heater. The first safety value is a preset liquid level safety threshold. When the liquid level in the heater reaches this value, it is considered that the current heater is in an abnormal state and emergency measures need to be taken to drain water. The first safety value can be set based on the experience of the staff, the specific model and parameters of the low-pressure heater to be tested, etc., and the present disclosure does not limit it again.

[0032] In S103, when the effective liquid level value exceeds a preset second safety value, the bypass switch of the low-pressure heater is controlled to be turned on.

[0033] In one embodiment of the present disclosure, the bypass switch is used to change the switch device of the working flow path. When the low-pressure heater has abnormal liquid level or other faults, the bypass system can skip part of the process to ensure that the system continues to operate. The bypass system is usually isolated from the main process to prevent the abnormal liquid level from further affecting the main process. The second safety value is another preset liquid level safety threshold, and its value is usually higher than the first safety value. When the liquid level continues to rise to this value, it means that the liquid level control situation is more urgent and bypass measures need to be enabled to provide more comprehensive protection for the low-pressure heater. It is worth noting that S102 and S103 correspond to two different situations, and their serial numbers do not represent the order of execution.

[0034] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the liquid level of the low-pressure heater to be tested is measured in real time by a liquid level measurement and control device to obtain an effective liquid level value; when the effective liquid level value exceeds the preset first safety value, the emergency drain valve of the low-pressure heater is controlled to open to quickly drain excess liquid; when the effective liquid level value exceeds the preset second safety value, the bypass switch of the low-pressure heater is controlled to open and switch to the bypass system to ensure safe operation of the system. In this way, clear boundary values ​​and corresponding solutions are set in the process of detecting low-pressure heater failures, and the liquid level of the low-pressure heater is effectively controlled through a multi-level protection mechanism to prevent equipment damage and system shutdown caused by excessively high liquid levels, thereby ensuring the safety and stability of the system.

[0035] As an optional implementation, S101 performs real-time liquid level measurement on the low-pressure heater to be tested to obtain the effective liquid level value of the low-pressure heater to be tested, which may include: simultaneously generating multiple liquid level detection signals to obtain the liquid level value corresponding to each liquid level detection signal; determining the effective detection signal in each liquid level detection signal based on the deviation value between each liquid level value and a preset deviation threshold; determining the effective liquid level value based on the liquid level value corresponding to the effective detection signal.

[0036] In one embodiment of the present disclosure, a low-voltage heater liquid level measurement and control device may be provided with a plurality of liquid level metering components, and a controller may control these liquid level metering components to simultaneously perform liquid level detection on the low-voltage heater to be tested. During the detection process, each liquid level metering component will generate a liquid level detection signal, and each liquid level detection signal corresponds to a detection result, i.e., a liquid level value. Then, the liquid level values ​​corresponding to different liquid level detection signals are compared. Specifically, deviation values ​​may be taken between each other. If the deviation value is greater than a preset deviation threshold, it means that there is a signal that may be interfered with or inaccurate in the liquid level detection signals corresponding to the two, and the corresponding liquid level metering component may have a fault, resulting in an error in the measured liquid level value. By repeating this step, liquid level detection signals whose deviations are within the allowable error range can be screened out, i.e., valid detection signals, and then, based on the liquid level values ​​corresponding to these valid detection signals, a relatively true and accurate valid liquid level value of the low-voltage heater to be tested can be obtained.

[0037] In this way, it is possible to effectively avoid the fault of the liquid level measuring instrument itself misleading the fault judgment of the low-pressure heater, and improve the reliability and accuracy of the liquid level measurement. Even if a signal is interfered with or inaccurate, the system can still filter out the most accurate signal to ensure that the real-time monitored liquid level value is credible, thereby avoiding control errors caused by liquid level measurement errors.

[0038] As an optional implementation, the method further includes: when there is no valid detection signal in each liquid level detection signal, controlling the low-pressure heater liquid level measurement and control device to disconnect from the low-pressure heater to be tested, and issuing a fault alarm.

[0039] In one embodiment of the present disclosure, during the effectiveness screening of each liquid level detection signal, if the deviation values ​​corresponding to all signals exceed the preset deviation threshold, no effective detection signal can be obtained. This means that all liquid level metering components may be interfered with, faulty or have too large errors, and cannot provide reliable liquid level data. At this time, the controller controls the low-voltage heater liquid level measurement and control device to be disconnected from the low-voltage heater to be tested to avoid erroneous operations caused by invalid signals, and also prevent the low-voltage heater measurement and control device from executing erroneous control commands to the low-voltage heater. Moreover, after the disconnection, the fault alarm mechanism will be triggered immediately. The alarm can be carried out by means of sound and light signals, display screen warnings in the control room, or by sending remote alarm information to remind the staff of the abnormal condition of the low-voltage heater measurement and control device, so as to suggest the staff to conduct inspections and repairs in time.

[0040] As an optional implementation, determining the effective liquid level value according to the liquid level value corresponding to the effective detection signal includes: if there are multiple effective detection signals, determining the average value of the liquid level values ​​corresponding to the effective detection signals as the effective liquid level value.

[0041] In one embodiment of the present disclosure, when there are multiple valid detection signals, the average value of these valid liquid level values ​​is calculated, that is, the sum of the valid liquid level values ​​is divided by the total number of valid detection signals to obtain the final average liquid level value as the effective liquid level value, which is used to subsequently determine whether the liquid level of the low-pressure heater is abnormal. In this way, the influence of the error of a single detection signal can be effectively reduced, the judgment error caused by the occasional deviation of a signal can be avoided, and the overall anti-interference ability and accuracy of the liquid level measurement and control method can be improved.

[0042] As another optional implementation, determining the effective liquid level value according to the liquid level value corresponding to the effective detection signal includes: if there are multiple effective detection signals, determining the liquid level value corresponding to each effective detection signal as the effective liquid level value.

[0043] In an embodiment of the present disclosure, when there are multiple valid detection signals, the liquid level values ​​corresponding to these valid detection signals can also be used as the valid liquid level values, that is, there are multiple valid liquid level values.

[0044] At this time, in S102, when the effective liquid level value exceeds the preset first safety value, the emergency drain valve of the low-pressure heater is controlled to open, including: determining the number of effective liquid level values ​​that exceed the first safety value, if the ratio of this number to the total number of effective liquid level values ​​reaches a first preset ratio, then controlling the emergency drain valve of the low-pressure heater to open.

[0045] It can be understood that each effective liquid level value is compared with the above-mentioned first safety value to determine the number of effective liquid level values ​​that exceed (i.e., are greater than) the first safety value, and this number is compared with the total number of effective liquid level values ​​to determine the ratio of the effective liquid level values ​​that exceed the first safety value. If this ratio reaches (i.e., is greater than or equal to) the first preset ratio, it can be determined that the liquid level of the low-pressure heater is too high and the emergency drain valve needs to be opened for drainage.

[0046] Similarly, in S103, when the effective liquid level value exceeds the preset second safety value, the bypass switch of the low-pressure heater is controlled to open, including: determining the number of effective liquid level values ​​that exceed the second safety value, if the ratio of this number to the total number of effective liquid level values ​​reaches a second preset ratio, then controlling the bypass switch of the low-pressure heater to open.

[0047] It can be understood that each effective liquid level value is compared with the above-mentioned second safety value to determine the number of effective liquid level values ​​that exceed (i.e., are greater than) the second safety value, and this number is compared with the total number of effective liquid level values ​​to determine the ratio of the effective liquid level values ​​that exceed the second safety value. If this ratio reaches (i.e., is greater than or equal to) the second preset ratio, it can be determined that the current abnormal condition of the low-pressure heater fluid is serious and the bypass system needs to be opened.

[0048] Through the above method, each effective liquid level value exceeding the first safety value or the second safety value can be used as a switch value. When the switch value reaches a certain number, the corresponding operation is triggered to avoid false operation or refusal to operate and ensure the stable operation of the unit.

[0049] In addition, the specific values ​​of the first preset ratio and the second preset ratio as well as the magnitude relationship between the two can be set according to actual needs, and the present disclosure does not limit them here.

[0050] As an optional implementation, the method further includes: displaying the effective liquid level value.

[0051] In one embodiment of the present disclosure, after receiving the effective liquid level value, the controller can also control the display window of the low-pressure heater liquid level measurement and control device to display the effective liquid level value, so that the staff can understand the detection status of the low-pressure heater to be tested in real time.

[0052] Figure 2 FIG. 2 is a block diagram of a low-pressure heater liquid level measurement and control device 200 according to an exemplary embodiment. Figure 2 As shown, the low-pressure heater liquid level measurement and control device 200 may include a controller 201; The controller 201 is used for: In response to the low-pressure heater liquid level measurement and control device 200 being connected to the low-pressure heater 100 to be tested, real-time liquid level measurement is performed on the low-pressure heater 100 to be tested, so as to obtain an effective liquid level value of the low-pressure heater 100 to be tested; When the effective liquid level value exceeds a preset first safety value, controlling the emergency drain valve of the low-pressure heater to open; When the effective liquid level value exceeds a preset second safety value, the bypass switch of the low-pressure heater is controlled to open.

[0053] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the liquid level of the low-pressure heater to be tested is measured in real time by a liquid level measurement and control device to obtain an effective liquid level value; when the effective liquid level value exceeds the preset first safety value, the emergency drain valve of the low-pressure heater is controlled to open to quickly drain excess liquid; when the effective liquid level value exceeds the preset second safety value, the bypass switch of the low-pressure heater is controlled to open and switch to the bypass system to ensure safe operation of the system. In this way, clear boundary values ​​and corresponding solutions are set in the process of detecting low-pressure heater failures, and the liquid level of the low-pressure heater is effectively controlled through a multi-level protection mechanism to prevent equipment damage and system shutdown caused by excessively high liquid levels, thereby ensuring the safety and stability of the system.

[0054] Optionally, the low-pressure heater liquid level measurement and control device 200 further includes: a plurality of liquid level metering components 202a-202c; The controller 201 is connected to each of the liquid level metering components 202a-202c for: Controlling each of the liquid level metering components 202a-202c to simultaneously generate a liquid level detection signal to obtain a liquid level value corresponding to each liquid level detection signal; Determining a valid detection signal among the liquid level detection signals according to a deviation value between the liquid level values ​​and a preset deviation threshold; The effective liquid level value is determined according to the liquid level value corresponding to the effective detection signal.

[0055] Optionally, the controller 201 is further configured to: if there are a plurality of the valid detection signals, determine an average value of the liquid level values ​​corresponding to the respective valid detection signals as the valid liquid level value.

[0056] Optionally, the controller 201 is also used to: if there are multiple valid detection signals, determine the liquid level value corresponding to each of the valid detection signals as the valid liquid level value; determine the number of valid liquid level values ​​that exceed the first safety value, and if the ratio of this number to the total number of valid liquid level values ​​reaches a first preset ratio, control the emergency drain valve of the low-pressure heater to open; determine the number of valid liquid level values ​​that exceed the second safety value, and if the ratio of this number to the total number of valid liquid level values ​​reaches a second preset ratio, control the bypass switch of the low-pressure heater to open.

[0057] Optionally, the controller 201 is also used to: when there is no valid detection signal in each of the liquid level detection signals, control the low-pressure heater liquid level measurement and control device 200 to disconnect from the low-pressure heater 100 to be tested, and issue a fault alarm.

[0058] Optionally, the low-pressure heater liquid level measurement and control device 200 further includes: a display window 203; The controller 201 is connected to the display window 203 for: The display window 203 is controlled to display the effective liquid level value.

[0059] Regarding the low-pressure heater liquid level measurement and control device 200 in the above embodiment, the specific manner in which the controller 201 and other modules perform operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0060] Figure 3 FIG. 1 is a block diagram of an electronic device 300 according to an exemplary embodiment. Figure 3As shown, the electronic device 300 may include: a processor 301 , a memory 302 . The electronic device 300 may also include one or more of a multimedia component 303 , an input / output (I / O) interface 304 , and a communication component 305 .

[0061] The processor 301 is used to control the overall operation of the electronic device 300 to complete all or part of the steps in the above-mentioned low-pressure heater liquid level measurement and control method. The memory 302 is used to store various types of data to support the operation of the electronic device 300. These data may include, for example, instructions for any application or method used to operate on the electronic device 300, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 302 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, disk or optical disk. The multimedia component 303 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, which is used to receive external audio signals. The received audio signal may be further stored in the memory 302 or sent through the communication component 305. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 304 provides an interface between the processor 301 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 305 is used for wired or wireless communication between the electronic device 300 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 305 may include: Wi-Fi module, Bluetooth module, NFC module, etc.

[0062] In some embodiments, the electronic device 300 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned low-voltage heater liquid level measurement and control method.

[0063] In addition, in one embodiment, the embodiment of the present disclosure further provides a computer-readable storage medium including program instructions, and when the program instructions are executed by the processor, the steps of the above-mentioned low-pressure heater liquid level measurement and control method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 302 including program instructions, and the above-mentioned program instructions can be executed by the processor 301 of the electronic device 300 to complete the above-mentioned low-pressure heater liquid level measurement and control method.

[0064] In addition, in one embodiment, an embodiment of the present disclosure also provides a computer program product, which is a computer program that can be executed by a programmable device, and the computer program has a code portion for executing the above-mentioned low-pressure heater liquid level measurement and control method when executed by the programmable device.

[0065] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0066] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0067] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for measuring and controlling the liquid level of a low-pressure heater, characterized in that: The method is applied to a low-pressure heater liquid level measurement and control device, and the method comprises: In response to the low-pressure heater liquid level measurement and control device being connected to the low-pressure heater to be tested, real-time liquid level measurement is performed on the low-pressure heater to be tested to obtain an effective liquid level value of the low-pressure heater to be tested; When the effective liquid level value exceeds a preset first safety value, controlling the emergency drain valve of the low-pressure heater to open; When the effective liquid level value exceeds a preset second safety value, the bypass switch of the low-pressure heater is controlled to open.

2. The method according to claim 1, characterized in that The real-time liquid level measurement of the low-pressure heater to be tested is performed to obtain an effective liquid level value of the low-pressure heater to be tested, including: Generate multiple liquid level detection signals at the same time to obtain the liquid level value corresponding to each liquid level detection signal; Determining a valid detection signal among the liquid level detection signals according to a deviation value between the liquid level values ​​and a preset deviation threshold; The effective liquid level value is determined according to the liquid level value corresponding to the effective detection signal.

3. The method according to claim 2, characterized in that Determining the effective liquid level value according to the liquid level value corresponding to the effective detection signal includes: If there are multiple valid detection signals, the average value of the liquid level values ​​corresponding to the valid detection signals is determined as the valid liquid level value.

4. The method according to claim 2, characterized in that: Determining the effective liquid level value according to the liquid level value corresponding to the effective detection signal includes: If there are multiple valid detection signals, the liquid level values ​​corresponding to the respective valid detection signals are determined as the valid liquid level values; When the effective liquid level value exceeds a preset first safety value, controlling the emergency drain valve of the low-pressure heater to open comprises: Determine the number of effective liquid level values ​​exceeding the first safety value, and if the ratio of the number to the total number of effective liquid level values ​​reaches a first preset ratio, control the emergency drain valve of the low-pressure heater to open; When the effective liquid level value exceeds a preset second safety value, controlling the bypass switch of the low-pressure heater to open includes: The number of effective liquid level values ​​exceeding the second safety value is determined, and if the ratio of the number to the total number of effective liquid level values ​​reaches a second preset ratio, the bypass switch of the low-pressure heater is controlled to open.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: The effective liquid level value is displayed.

6. The method according to claim 2, characterized in that The method further comprises: When there is no valid detection signal in each of the liquid level detection signals, the low-pressure heater liquid level measurement and control device is controlled to be disconnected from the low-pressure heater to be tested, and a fault alarm is issued.

7. A low-pressure heater liquid level measurement and control device, characterized in that: Including controller; The controller is used to: In response to the low-pressure heater liquid level measurement and control device being connected to the low-pressure heater to be tested, real-time liquid level measurement is performed on the low-pressure heater to be tested to obtain an effective liquid level value of the low-pressure heater to be tested; When the effective liquid level value exceeds a preset first safety value, controlling the emergency drain valve of the low-pressure heater to open; When the effective liquid level value exceeds a preset second safety value, the bypass switch of the low-pressure heater is controlled to open.

8. The device according to claim 7, characterized in that The device also includes: a plurality of liquid level measurement components; Wherein, the controller is in communication connection with each of the liquid level metering components, and is used for: Controlling each of the liquid level metering components to simultaneously generate a liquid level detection signal to obtain a liquid level value corresponding to each liquid level detection signal; Determining a valid detection signal among the liquid level detection signals according to a deviation value between the liquid level values ​​and a preset deviation threshold; The effective liquid level value is determined according to the liquid level value corresponding to the effective detection signal.

9. The device according to claim 7, characterized in that The device further comprises: a display window; Wherein, the controller is connected in communication with the display window and is used for: The display window is controlled to display the effective liquid level value.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

11. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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