Pulse solenoid valve fault detection method, device, equipment, medium and product

Abstract

The invention discloses a pulse solenoid valve fault detection method, device and equipment, a medium and a product, and relates to the technical field of mechanical equipment fault detection, the method is applied to a distributed control system in a flue gas desulfurization system, and the distributed control system is in communication connection with a pressure transmitter and a pressure transmitter; the method comprises the following steps: determining a pulse valve starting intermediate state according to a pulse valve starting signal of a pulse electromagnetic valve, and determining initial air pressure according to the starting intermediate state and current compressed air pressure in a compressed air main pipeline sent by a pressure transmitter; and a pressure change value is determined according to the initial air pressure and the real-time air pressure in the compressed air main pipeline, and a fault detection result of the pulse electromagnetic valve is determined according to the pressure change value and a preset pressure standard threshold value. The invention aims to improve the accuracy of fault detection of the pulse electromagnetic valve so as to improve the dust removal performance of the flue gas desulfurization system.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical equipment fault detection, and in particular to a pulse solenoid valve fault detection method, device, equipment, medium and product. Background Art

[0002] With the continuous development of mechanical equipment fault detection technology, users have put forward higher requirements on the accuracy of pulse solenoid valve fault detection.

[0003] In the flue gas desulfurization system, the dust collector is the core dust removal equipment, and its performance is directly related to the dust removal efficiency and stability of the flue gas desulfurization system. In order to ensure that the dust on the surface of the dust collector is effectively cleaned, the flue gas desulfurization system usually uses a pulse solenoid valve to control the injection of compressed air to achieve row-by-row cleaning of the filter bags. However, the existing pulse solenoid valves face two major technical difficulties in application: First, due to their extremely short connection time, traditional proximity switches and other equipment are difficult to accurately capture their operating status, resulting in the inability to detect faults in a timely manner; second, the mechanical structure of the pulse solenoid valve limits the installation of sensors, making it difficult to effectively monitor the operating status of the equipment. These problems not only affect the normal operation of the pulse solenoid valve, but also directly threaten the dust removal effect and long-term stable operation of the dust collector, seriously affecting the dust removal performance of the flue gas desulfurization system.

[0004] Therefore, how to improve the accuracy of pulse solenoid valve fault detection to enhance the dust removal performance of the flue gas desulfurization system is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The main purpose of this application is to provide a pulse solenoid valve fault detection method, device, equipment, medium and product, aiming to improve the accuracy of pulse solenoid valve fault detection to enhance the dust removal performance of the flue gas desulfurization system.

[0006] To achieve the above-mentioned object, the present application provides a pulse solenoid valve fault detection method, which is applied to a distributed control system in a flue gas desulfurization system, wherein the flue gas desulfurization system further comprises a pressure transmitter installed on a compressed air main pipeline, and a pulse solenoid valve mechanically connected to the compressed air main pipeline, wherein the distributed control system is communicatively connected to the pressure transmitter and the pressure transmitter respectively;

[0007] The pulse solenoid valve fault detection method comprises:

[0008] Determine the pulse valve start-up intermediate state according to the pulse valve start-up signal of the pulse solenoid valve, and determine the initial air pressure according to the start-up intermediate state and the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter;

[0009] A pressure change value is determined according to the initial air pressure and the real-time air pressure in the compressed air main pipeline, and a fault detection result of the pulse solenoid valve is determined according to the pressure change value and a preset pressure standard threshold.

[0010] In one embodiment, the step of determining the fault detection result of the pulse solenoid valve according to the pressure change value and a preset pressure standard threshold value includes:

[0011] Detecting whether the pressure change value is greater than a preset pressure standard threshold;

[0012] If the pressure change value is greater than the pressure standard threshold, it is determined that the fault detection result of the pulse solenoid valve is that the pulse solenoid valve is in a normal operating state;

[0013] If the pressure change value is less than the pressure standard threshold, it is determined that the fault detection result of the pulse solenoid valve is that the pulse solenoid valve is in a faulty operating state.

[0014] In one embodiment, after the step of determining the fault detection result of the pulse solenoid valve according to the pressure change value and a preset pressure standard threshold, the pulse solenoid valve fault detection method includes:

[0015] In response to the fault detection result that the pulse solenoid valve is in a faulty operating state, a preset fault reset signal is activated to perform fault reset on the pulse solenoid valve.

[0016] In one embodiment, the pulse solenoid valve fault detection method includes:

[0017] When executing the step of detecting whether the pressure change value is greater than a preset pressure standard threshold, the signal identifier corresponding to the pulse valve start signal is switched from a start identifier to a shutdown identifier, and the pulse solenoid valve is enabled to stop working according to the shutdown identifier.

[0018] In one embodiment, the step of determining the pulse valve start-up intermediate state according to the pulse valve start-up signal of the pulse solenoid valve comprises:

[0019] After receiving the pulse valve start signal sent by the pulse solenoid valve, in response to the signal identifier corresponding to the pulse valve start signal being the start identifier, the preset start signal intermediate value is switched from the off value to the on value, and the start signal intermediate value is used as the on value as the pulse valve start intermediate state.

[0020] In one embodiment, the step of determining the initial air pressure based on the startup intermediate state and the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter comprises:

[0021] In response to the startup intermediate state, the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter is acquired, and the current compressed air pressure is used as the initial air pressure.

[0022] In addition, to achieve the above purpose, the present application also provides a pulse solenoid valve fault detection device, the pulse solenoid valve fault detection device comprising:

[0023] a pressure determination module, used to determine the pulse valve start-up intermediate state according to the pulse valve start-up signal of the pulse solenoid valve, and determine the initial air pressure according to the start-up intermediate state and the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter;

[0024] The fault detection module is used to determine the pressure change value according to the initial air pressure and the real-time air pressure in the compressed air main pipeline, and to determine the fault detection result of the pulse solenoid valve according to the pressure change value and a preset pressure standard threshold.

[0025] Each functional module of the pulse solenoid valve fault detection device of the present application implements the steps of the pulse solenoid valve fault detection method of the present application as described above during operation.

[0026] In addition, to achieve the above-mentioned purpose, the present application also provides an electronic device, which includes a memory, a processor, and a pulse solenoid valve fault detection program stored in the memory and executable on the processor, and the pulse solenoid valve fault detection program implements the steps of the above-mentioned pulse solenoid valve fault detection method when executed by the processor.

[0027] In addition, to achieve the above-mentioned purpose, the present application also provides a medium, which is a computer-readable storage medium, and a pulse solenoid valve fault detection program is stored on the computer-readable storage medium. When the pulse solenoid valve fault detection program is executed by the processor, the steps of the above-mentioned pulse solenoid valve fault detection method are implemented.

[0028] In addition, to achieve the above-mentioned purpose, the present application also provides a computer product, which includes a computer program, and the computer program contains computer program code means stored on a computer-readable medium or a carrier, and the computer program code means is configured to implement the steps of the above-mentioned pulse solenoid valve fault detection method when executed by a computer or a processor.

[0029] The pulse solenoid valve fault detection method provided in the present application realizes improving the accuracy of pulse solenoid valve fault detection, thereby improving the dust removal performance of the flue gas desulfurization system. Specifically, by utilizing the distributed control system in the flue gas desulfurization system, a communication connection is established with the pressure transmitter installed on the compressed air main pipeline, and the pulse solenoid valve mechanically connected to the compressed air main pipeline. When the pulse solenoid valve is started, the pulse valve start signal of the pulse solenoid valve is collected through the distributed control system, and the pulse valve start intermediate state can be accurately obtained based on the pulse valve start signal; next, the initial air pressure can be accurately obtained by determining the initial air pressure based on the pulse valve start intermediate state combined with the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter; then, by continuously monitoring the real-time air pressure in the compressed air main pipeline, and By comparing with the initial air pressure, the pressure change value reflecting the operating status of the pulse solenoid valve can be accurately obtained; next, by comparing the fault detection result obtained by comparing the pressure change value with the preset pressure standard threshold, it is possible to accurately determine whether the pulse solenoid valve has a fault, which significantly improves the accuracy of pulse solenoid valve fault detection, and overcomes the problem that the pulse solenoid valve is difficult to capture due to the extremely short connection time of the pulse solenoid valve, and avoids the problem of mechanical structure limiting the installation of the sensor, thereby realizing effective monitoring of the operating status of the pulse solenoid valve and ensuring the normal operation of the pulse solenoid valve, thereby maintaining the dust removal efficiency and long-term stable operation of the dust collector, and ultimately significantly improving the overall dust removal performance of the flue gas desulfurization system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] Figure 1 It is a schematic diagram of the process involved in the first embodiment of the present application;

[0033] Figure 2 It is a schematic diagram of the compressed air pressure change curve;

[0034] Figure 3 It is a schematic diagram of the process involved in the second embodiment of the present application;

[0035] Figure 4 It is a schematic diagram of a pulse solenoid valve fault detection process involved in the embodiment of the present application;

[0036] Figure 5 It is a module schematic diagram of the pulse solenoid valve fault detection device of the present application;

[0037] Figure 6 It is a schematic diagram of the structure of an electronic device involved in the embodiment of the present application.

[0038] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0042] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application.

[0043] With the continuous development of mechanical equipment fault detection technology, users have put forward higher requirements on the accuracy of pulse solenoid valve fault detection.

[0044] In the flue gas desulfurization system, the dust collector is the core dust removal equipment, and its performance is directly related to the dust removal efficiency and stability of the flue gas desulfurization system. In order to ensure that the dust on the surface of the dust collector is effectively cleaned, the flue gas desulfurization system usually uses a pulse solenoid valve to control the injection of compressed air to achieve row-by-row cleaning of the filter bags. However, the existing pulse solenoid valves face two major technical difficulties in application: First, due to their extremely short connection time, traditional proximity switches and other equipment are difficult to accurately capture their operating status, resulting in the inability to detect faults in a timely manner; second, the mechanical structure of the pulse solenoid valve limits the installation of sensors, making it difficult to effectively monitor the operating status of the equipment. These problems not only affect the normal operation of the pulse solenoid valve, but also directly threaten the dust removal effect and long-term stable operation of the dust collector, seriously affecting the dust removal performance of the flue gas desulfurization system.

[0045] Therefore, how to improve the accuracy of pulse solenoid valve fault detection to enhance the dust removal performance of the flue gas desulfurization system is a technical problem that needs to be solved urgently.

[0046] In order to solve the above-mentioned technical defects, the present application provides a pulse solenoid valve fault detection method, device, equipment, medium and product.

[0047] The present application embodiment provides a pulse solenoid valve fault detection method, referring to Figure 1 As shown, Figure 1 It is a flow chart of the first embodiment of the present application. The pulse solenoid valve fault detection method provided in the present application is applied to a distributed control system in a flue gas desulfurization system, the flue gas desulfurization system further comprises a pressure transmitter installed on a compressed air main pipeline, and a pulse solenoid valve mechanically connected to the compressed air main pipeline, the distributed control system is respectively connected to the pressure transmitter and the pressure transmitter for communication, and the pulse solenoid valve fault detection method comprises steps S10 to S20.

[0048] Step S10: determining the pulse valve start-up intermediate state according to the pulse valve start-up signal of the pulse solenoid valve, and determining the initial air pressure according to the start-up intermediate state and the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter.

[0049] In this embodiment, the distributed control system in the flue gas desulfurization system provided in the present application establishes a communication connection with the pressure transmitter installed on the compressed air main pipeline and the pulse solenoid valve mechanically connected to the compressed air main pipeline. When the pulse solenoid valve is driven by the PWM signal (Pulse Width Modulation, pulse width modulation signal) sent by the distributed control system, the pulse solenoid valve starts to start and sends a pulse valve start signal carrying a start mark to the distributed control system. At this time, the distributed control system responds to the pulse valve start signal carrying the start mark sent by the pulse solenoid valve, switches the preset start state signal intermediate value from the off value to the on value, and uses the start state signal intermediate value as the on value as the pulse valve start intermediate state, thereby realizing the initialization of the pulse solenoid valve fault detection; next, according to the communication connection between the distributed control system and the pressure transmitter, when the pulse valve starts in the intermediate state, the current compressed air pressure in the compressed air main pipeline collected by the pressure transmitter is obtained through the distributed control system, and the current compressed air pressure is used as the initial air pressure, thereby ensuring the real-time and accuracy of the initial air pressure.

[0050] It should be noted that the pressure transmitter is installed on the inner wall of the compressed air main pipeline and is used to detect the compressed air pressure in the compressed air main pipeline.

[0051] The pulse solenoid valve is configured to control the entry of compressed air; specifically, the pulse solenoid valve generates a pulse signal by rapidly switching an electromagnetic relay, causing the valve to open or close rapidly to achieve precise control of the fluid or gas. For example, a plurality of pulse solenoid valves are usually provided in a dust collector, and the pulse solenoid valve fault detection method provided in the present application can accurately determine the fault location according to the operating status of each pulse solenoid valve.

[0052] In a specific embodiment, the pulse solenoid valve starts to start when the PWM signal sent by the distributed control system is a start signal with a pulse width of about 100ms, that is, the pulse solenoid valve is connected to the compressed air main pipeline under the drive of the start signal with a pulse width of about 100ms, so that the compressed air in the compressed air main pipeline can be passed into the dust collector. At this time, refer to Figure 2 , Figure 2 It is a schematic diagram of the compressed air pressure change curve, that is, the pressure transmitter installed on the inner wall of the compressed air main pipeline can detect that the current pressure of the compressed air is continuously decreasing until the pulse solenoid valve switches from the start state to the closed state (that is, after the pulse solenoid valve is closed), and the compressed air pressure in the compressed air main pipeline will slowly rise under replenishment.

[0053] Step S20: determining a pressure change value according to the initial air pressure and the real-time air pressure in the compressed air main pipeline, and determining a fault detection result of the pulse solenoid valve according to the pressure change value and a preset pressure standard threshold.

[0054] In this embodiment, refer to Figure 2 , during the time period when the pulse valve start signal persists, the real-time air pressure in the compressed air main pipeline is continuously collected through the pressure transmitter, and the air pressure difference between the initial air pressure and each real-time air pressure is continuously calculated, and the air pressure difference with the highest value among multiple air pressure differences is used as the pressure change value to provide accurate and reliable data support for subsequent pulse solenoid valve fault detection. Next, by comparing the fault detection result obtained by comparing the pressure change value with the preset pressure standard threshold, it is possible to accurately determine whether the pulse solenoid valve has a fault, which significantly improves the accuracy of pulse solenoid valve fault detection, and overcomes the problem that the pulse solenoid valve is difficult to capture due to the extremely short connection time, and avoids the problem of mechanical structure limiting sensor installation, realizing effective monitoring of the operating status of the pulse solenoid valve, ensuring the normal operation of the pulse solenoid valve, and then maintaining the dust removal efficiency and long-term stable operation of the dust collector, and ultimately significantly improving the overall dust removal performance of the flue gas desulfurization system.

[0055] It should be noted that during the time period when the pulse valve start signal persists, the pressure transmitter collects several real-time air pressures according to the preset collection frequency.

[0056] In summary, the pulse solenoid valve fault detection method provided in the present application realizes improving the accuracy of pulse solenoid valve fault detection, thereby improving the dust removal performance of the flue gas desulfurization system. Specifically, by utilizing the distributed control system in the flue gas desulfurization system, a communication connection is established with the pressure transmitter installed on the compressed air main pipeline, and the pulse solenoid valve mechanically connected to the compressed air main pipeline. When the pulse solenoid valve is started, the pulse valve start signal of the pulse solenoid valve is collected through the distributed control system, and the pulse valve start intermediate state can be accurately obtained based on the pulse valve start signal; next, the initial air pressure can be accurately obtained by determining the initial air pressure based on the pulse valve start intermediate state combined with the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter; then, by continuously monitoring the real-time air pressure in the compressed air main pipeline, and By comparing with the initial air pressure, the pressure change value reflecting the operating status of the pulse solenoid valve can be accurately obtained; next, by comparing the fault detection result obtained by comparing the pressure change value with the preset pressure standard threshold, it is possible to accurately determine whether the pulse solenoid valve has a fault, which significantly improves the accuracy of pulse solenoid valve fault detection, and overcomes the problem that the pulse solenoid valve is difficult to capture due to the extremely short connection time of the pulse solenoid valve, and avoids the problem of mechanical structure limiting the installation of the sensor, thereby realizing effective monitoring of the operating status of the pulse solenoid valve and ensuring the normal operation of the pulse solenoid valve, thereby maintaining the dust removal efficiency and long-term stable operation of the dust collector, and ultimately significantly improving the overall dust removal performance of the flue gas desulfurization system.

[0057] Further, based on the first embodiment of the present application, a second embodiment of the present application based on a pulse solenoid valve fault detection method is proposed, referring to Figure 3 , Figure 3 The above step S20: determining the fault detection result of the pulse solenoid valve according to the pressure change value and the preset pressure standard threshold value may also include the following implementation steps S201 to S203.

[0058] Step S201: Detect whether the pressure change value is greater than a preset pressure standard threshold.

[0059] In this embodiment, by detecting whether the pressure change value is greater than the preset pressure standard threshold, an effective evaluation of the pulse solenoid valve working state is achieved. Specifically, the application uses the pressure change value collected and calculated previously to compare with the preset pressure standard threshold, so as to determine whether the pulse solenoid valve has potential abnormalities.

[0060] Step S202: If the pressure change value is greater than the pressure standard threshold, it is determined that the fault detection result of the pulse solenoid valve is that the pulse solenoid valve is in a normal operating state.

[0061] In this embodiment, if it is determined that the pressure change value is greater than the preset pressure standard threshold, it is determined that the pulse solenoid valve is in a normal operating state. That is to say, a normal pulse solenoid valve will cause a certain pressure fluctuation (i.e., pressure change value) in the connected compressed air main pipeline when it is working. If the pressure change value exceeds the preset pressure standard threshold, it usually means that the solenoid valve is actively responding to the control signal and performing its due function. Therefore, judging that the pulse solenoid valve is in a normal operating state when the pressure change value is greater than the pressure standard threshold helps to reduce false alarms and improve the accuracy of pulse solenoid valve fault detection.

[0062] Step S203: If the pressure change value is less than the pressure standard threshold, it is determined that the fault detection result of the pulse solenoid valve is that the pulse solenoid valve is in a faulty operating state.

[0063] In this embodiment, if it is determined that the pressure change value is less than the preset pressure standard threshold, it is determined that the pulse solenoid valve is in a faulty operating state, so that possible problems with the pulse solenoid valve can be identified in a timely manner. In other words, the situation where the pressure change value is less than the pressure standard threshold means that the pulse solenoid valve is slow to respond, blocked or damaged, etc., all of which may affect the normal operation of the dust collector. The present application is set to issue a fault warning in a timely manner when the pulse solenoid valve is in a faulty operating state, which can prompt maintenance personnel to take quick measures to avoid potential safety hazards, ensure the processing capacity and dust collection efficiency of the dust collector, and significantly improve the overall dust removal performance of the flue gas desulfurization system.

[0064] Furthermore, in some other feasible embodiments, after the above step S20: determining the fault detection result of the pulse solenoid valve according to the pressure change value and the preset pressure standard threshold, the pulse solenoid valve fault detection method also includes the following implementation step A10.

[0065] Step A10: In response to the fault detection result that the pulse solenoid valve is in a faulty operating state, a preset fault reset signal is activated to perform fault reset on the pulse solenoid valve.

[0066] In this embodiment, when the pulse solenoid valve is detected to be in a faulty operating state, the preset fault reset signal is activated through the distributed control system, and the fault reset operation can be automatically performed on the pulse solenoid valve, thereby quickly restoring the normal operation of the pulse solenoid valve, reducing the downtime caused by the fault, and improving the dust removal efficiency of the dust collector for the flue gas desulfurization system. At the same time, it reduces the need for manual intervention and optimizes the maintenance process.

[0067] Furthermore, in some feasible embodiments, the pulse solenoid valve fault detection method may also include the following implementation step B10.

[0068] Step B10: When executing the step of detecting whether the pressure change value is greater than a preset pressure standard threshold, the signal identifier corresponding to the pulse valve start signal is switched from a start identifier to a close identifier, and the pulse solenoid valve is enabled to stop working according to the close identifier.

[0069] In this embodiment, when executing the step of detecting whether the pressure change value is greater than the preset pressure standard threshold, by switching the signal identifier corresponding to the pulse valve start signal from the start identifier to the close identifier, the pulse solenoid valve can be immediately enabled to stop working, ensuring that the state of the pulse solenoid valve will not interfere with the detection result during the evaluation of the pressure change value, thereby improving the accuracy and reliability of fault detection. At the same time, this instant stop mechanism also helps to protect the pulse solenoid valve from potential damage and provides a stable environment for subsequent fault analysis or reset operations.

[0070] Furthermore, in some other feasible embodiments, the above step S10: determining the pulse valve start-up intermediate state according to the pulse valve start-up signal of the pulse solenoid valve may include the following implementation step S101.

[0071] Step S101: After receiving the pulse valve start signal sent by the pulse solenoid valve, in response to the signal identifier corresponding to the pulse valve start signal being a start identifier, the preset start signal intermediate value is switched from the off value to the on value, and the start signal intermediate value is used as the on value as the pulse valve start intermediate state.

[0072] In this embodiment, after receiving the pulse valve start signal sent by the pulse solenoid valve, if the signal identifier corresponding to the signal is a start identifier, the distributed control system will quickly respond to switch the preset start signal intermediate value from the off value to the on value, and then accurately obtain the information that the pulse valve start intermediate state is the on state, which provides a stable and reliable trigger condition for the subsequent start-up pulse solenoid valve fault detection, and also improves the response speed and operating efficiency of the pulse solenoid valve fault detection.

[0073] Furthermore, in some feasible embodiments, the above step S10: determining the initial air pressure according to the startup intermediate state and the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter, may also include the following implementation step C10.

[0074] Step C10: In response to the startup intermediate state, the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter is obtained, and the current compressed air pressure is used as the initial air pressure.

[0075] In this embodiment, based on the response of the distributed control system to the intermediate state of the pulse valve startup being the on state, the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter is immediately obtained, and the current compressed air pressure is set as the initial air pressure, thereby ensuring that the pulse solenoid valve fault detection process has an accurate starting point, providing a reliable reference value for subsequent pressure change monitoring, so that any pressure fluctuations can be accurately measured and recorded, thereby improving the accuracy and sensitivity of monitoring the working status of the pulse solenoid valve.

[0076] In another embodiment, the following Table 1 is a variable statistics table for pulse solenoid valve fault detection.

[0077] Variable List Variable Types Variable Description Start: BOOL Pulse valve start signal Start_Temp: BOOL Start signal intermediate value, used for internal calculation P_IN: FLOAT Current compressed air pressure P_Temp: FLOAT Intermediate pressure value, used for internal calculations CZ_IN: FLOAT Preset pressure thresholds BHZ: FLOAT Current change in pressure, used for internal calculations BHZ_Temp: FLOAT The maximum value of the current change in pressure, used for internal calculations Error: FLOAT Fault output point, used to output calculation results RE: FLOAT Fault reset signal

[0078] Table 1

[0079] Combined with Table 1, the program example corresponding to the pulse solenoid valve fault detection is as follows:

[0080] IF Start AND Start_Temp=OFF THEN

[0081] Start_Temp=ON;

[0082] P_Temp=P_IN;

[0083] BHZ = 0;

[0084] END_IF;

[0085] (*When the pulse valve start signal is detected, the program is initialized. The current compressed air pressure P_IN is stored in the variable P_Temp, where P_Temp represents the initial air pressure*)

[0086] IF Start_Temp=ON AND Start=ON THEN

[0087] BHZ = P_Temp - P_IN;

[0088] IF B <BHZ_Temp THEN

[0089] BHZ = BHZ_Temp;

[0090] END_IF;

[0091] END_IF;

[0092] (*During the period of time when the pulse valve start signal Start persists, the change value is continuously calculated, where the current change value of pressure BHZ is the initial air pressure minus the current pressure (i.e., the real-time air pressure); during the change value calculation process, the maximum value of the change value is stored in the intermediate variable BHZ_Temp of the change value. After the calculation is completed, the change value BHZ obtained is the maximum value of the entire process (i.e., the highest air pressure difference)*)

[0093] IF Start=OFF AND Start_Temp=ON THEN

[0094] IF B <CZ_IN THEN

[0095] Error=ON;

[0096] END_IF;

[0097] Start_TEMP = OFF;

[0098] END_IF;

[0099] (*When the pulse valve start signal disappears, the highest air pressure difference (i.e. pressure change value) is compared with the preset pressure standard threshold. When the pressure change value is less than the pressure standard threshold, a fault is output*)

[0100] IF RE=ON THEN

[0101] Error=OFF;

[0102] END_IF;

[0103] (*After receiving the reset signal, the fault signal is reset*)

[0104] It should be noted that the pulse solenoid valve fault detection process corresponding to this program example is as follows Figure 4 As shown, Figure 4 It is a schematic diagram of the pulse solenoid valve fault detection process involved in the embodiment of the present application. Figure 4 "ON" in the code indicates start. Figure 4 "OFF" in means off.

[0105] This application also provides a pulse solenoid valve fault detection device, please refer to Figure 5 , Figure 5 This is a module schematic diagram of the pulse solenoid valve fault detection device of the present application. The pulse solenoid valve fault detection device comprises:

[0106] The pressure determination module H01 is used to determine the pulse valve start-up intermediate state according to the pulse valve start-up signal of the pulse solenoid valve, and determine the initial air pressure according to the start-up intermediate state and the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter;

[0107] The fault detection module H02 is used to determine the pressure change value based on the initial air pressure and the real-time air pressure in the compressed air main pipeline, and to determine the fault detection result of the pulse solenoid valve based on the pressure change value and a preset pressure standard threshold.

[0108] In one embodiment, the step of determining the fault detection result of the pulse solenoid valve according to the pressure change value and a preset pressure standard threshold value includes:

[0109] Detecting whether the pressure change value is greater than a preset pressure standard threshold;

[0110] If the pressure change value is greater than the pressure standard threshold, it is determined that the fault detection result of the pulse solenoid valve is that the pulse solenoid valve is in a normal operating state;

[0111] If the pressure change value is less than the pressure standard threshold, it is determined that the fault detection result of the pulse solenoid valve is that the pulse solenoid valve is in a faulty operating state.

[0112] In one embodiment, after the step of determining the fault detection result of the pulse solenoid valve according to the pressure change value and a preset pressure standard threshold, the pulse solenoid valve fault detection method includes:

[0113] In response to the fault detection result that the pulse solenoid valve is in a faulty operating state, a preset fault reset signal is activated to perform fault reset on the pulse solenoid valve.

[0114] In one embodiment, the pulse solenoid valve fault detection method includes:

[0115] When executing the step of detecting whether the pressure change value is greater than a preset pressure standard threshold, the signal identifier corresponding to the pulse valve start signal is switched from a start identifier to a shutdown identifier, and the pulse solenoid valve is enabled to stop working according to the shutdown identifier.

[0116] In one embodiment, the step of determining the pulse valve start-up intermediate state according to the pulse valve start-up signal of the pulse solenoid valve comprises:

[0117] After receiving the pulse valve start signal sent by the pulse solenoid valve, in response to the signal identifier corresponding to the pulse valve start signal being the start identifier, the preset start signal intermediate value is switched from the off value to the on value, and the start signal intermediate value is used as the on value as the pulse valve start intermediate state.

[0118] In one embodiment, the step of determining the initial air pressure based on the startup intermediate state and the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter comprises:

[0119] In response to the startup intermediate state, the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter is acquired, and the current compressed air pressure is used as the initial air pressure.

[0120] The pulse solenoid valve fault detection device provided by the present application adopts the pulse solenoid valve fault detection method in the above embodiment, which can overcome the problem that the pulse solenoid valve is difficult to capture due to the extremely short connection time, and avoid the problem that the mechanical structure restricts the installation of the sensor. Compared with the prior art, the beneficial effects of the pulse solenoid valve fault detection device provided by the present application are the same as the beneficial effects of the pulse solenoid valve fault detection method provided by the above embodiment, and the other technical features of the pulse solenoid valve fault detection device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0121] In addition, the present application also provides an electronic device, the electronic device comprising a memory, a processor and a pulse solenoid valve fault detection program stored in the memory and executable on the processor, the pulse solenoid valve fault detection program implements the steps of the pulse solenoid valve fault detection method when executed by the processor. Figure 6 , Figure 6 1 is a schematic diagram of the structure of an electronic device involved in the embodiment of the present application. The electronic device in the embodiment of the present application can be a device for locally running the pulse solenoid valve fault detection method.

[0122] like Figure 6 As shown, the electronic device of the embodiment of the present application may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wi-Fi interface).

[0123] The memory 1005 is arranged on the electronic device body, and a program is stored on the memory 1005, and the program implements the corresponding operation when it is executed by the processor 1001. The memory 1005 is also used to store parameters for use by the electronic device. The memory 1005 can be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 can also be a storage device independent of the aforementioned processor 1001.

[0124] Those skilled in the art will understand that Figure 6 The electronic device structure shown in the figure does not constitute a limitation of the electronic device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0125] like Figure 6 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a pulse solenoid valve fault detection program.

[0126] exist Figure 6 In the electronic device shown, the processor 1001 can be used to call the pulse solenoid valve fault detection program stored in the memory 1005 and execute the steps of the pulse solenoid valve fault detection method as described above.

[0127] In addition, to achieve the above-mentioned purpose, the present application also provides a medium, which is a computer-readable storage medium, and a pulse solenoid valve fault detection program is stored on the computer-readable storage medium. When the pulse solenoid valve fault detection program is executed by the processor, the steps of the above-mentioned pulse solenoid valve fault detection method are implemented.

[0128] In addition, to achieve the above-mentioned purpose, the present application also provides a computer product, which includes a computer program, and the computer program contains computer program code means stored on a computer-readable medium or a carrier, and the computer program code means is configured to implement the steps of the above-mentioned pulse solenoid valve fault detection method when executed by a computer or a processor.

[0129] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0130] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0131] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium such as ROM / RAM, a disk, or an optical disk as described above, and includes a number of instructions for enabling an electronic device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0132] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A pulse solenoid valve fault detection method, characterized in that: The pulse solenoid valve fault detection method is applied to a distributed control system in a flue gas desulfurization system, the flue gas desulfurization system further comprising a pressure transmitter installed on a compressed air main pipeline, and a pulse solenoid valve mechanically connected to the compressed air main pipeline, the distributed control system being communicatively connected to the pressure transmitter and the pressure transmitter respectively; The pulse solenoid valve fault detection method comprises: Determine the pulse valve start-up intermediate state according to the pulse valve start-up signal of the pulse solenoid valve, and determine the initial air pressure according to the start-up intermediate state and the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter; A pressure change value is determined according to the initial air pressure and the real-time air pressure in the compressed air main pipeline, and a fault detection result of the pulse solenoid valve is determined according to the pressure change value and a preset pressure standard threshold.

2. The pulse solenoid valve fault detection method according to claim 1, characterized in that: The step of determining the fault detection result of the pulse solenoid valve according to the pressure change value and the preset pressure standard threshold value includes: Detecting whether the pressure change value is greater than a preset pressure standard threshold; If the pressure change value is greater than the pressure standard threshold, it is determined that the fault detection result of the pulse solenoid valve is that the pulse solenoid valve is in a normal operating state; If the pressure change value is less than the pressure standard threshold, it is determined that the fault detection result of the pulse solenoid valve is that the pulse solenoid valve is in a faulty operating state.

3. The pulse solenoid valve fault detection method as claimed in claim 2, characterized in that: After the step of determining the fault detection result of the pulse solenoid valve according to the pressure change value and the preset pressure standard threshold, the pulse solenoid valve fault detection method includes: In response to the fault detection result that the pulse solenoid valve is in a faulty operating state, a preset fault reset signal is activated to perform fault reset on the pulse solenoid valve.

4. The pulse solenoid valve fault detection method as claimed in claim 2, characterized in that: The pulse solenoid valve fault detection method comprises: When executing the step of detecting whether the pressure change value is greater than a preset pressure standard threshold, the signal identifier corresponding to the pulse valve start signal is switched from a start identifier to a shutdown identifier, and the pulse solenoid valve is enabled to stop working according to the shutdown identifier.

5. The pulse solenoid valve fault detection method according to claim 1, characterized in that: The step of determining the pulse valve start-up intermediate state according to the pulse valve start-up signal of the pulse solenoid valve comprises: After receiving the pulse valve start signal sent by the pulse solenoid valve, in response to the signal identifier corresponding to the pulse valve start signal being the start identifier, the preset start signal intermediate value is switched from the off value to the on value, and the start signal intermediate value is used as the on value as the pulse valve start intermediate state.

6. The pulse solenoid valve fault detection method according to claim 1, characterized in that: The step of determining the initial air pressure according to the startup intermediate state and the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter comprises: In response to the startup intermediate state, the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter is acquired, and the current compressed air pressure is used as the initial air pressure.

7. A pulse solenoid valve fault detection device, characterized in that: The pulse solenoid valve fault detection device comprises: a pressure determination module, used to determine the pulse valve start-up intermediate state according to the pulse valve start-up signal of the pulse solenoid valve, and determine the initial air pressure according to the start-up intermediate state and the current compressed air pressure in the compressed air main pipeline sent by the pressure transmitter; The fault detection module is used to determine the pressure change value according to the initial air pressure and the real-time air pressure in the compressed air main pipeline, and to determine the fault detection result of the pulse solenoid valve according to the pressure change value and a preset pressure standard threshold.

8. An electronic device, characterized in that: The electronic device includes a memory, a processor, and a pulse solenoid valve fault detection program stored in the memory and executable on the processor. When the processor executes the pulse solenoid valve fault detection program, the steps of the pulse solenoid valve fault detection method as described in any one of claims 1 to 6 are implemented.

9. A medium, the medium being a computer-readable storage medium, characterized in that: The computer-readable storage medium stores a pulse solenoid valve fault detection program, and when the pulse solenoid valve fault detection program is executed by the processor, the steps of the pulse solenoid valve fault detection method as claimed in any one of claims 1 to 6 are implemented.

10. A computer product, characterized in that: The computer product comprises a computer program, which contains computer program code means stored on a computer-readable medium or carrier wave, and the computer program code means is configured to implement the steps of the pulse solenoid valve fault detection method according to any one of claims 1 to 6 when executed by a computer or a processor.

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