Aluminum corrosion on-line monitoring instrument, aluminum corrosion on-line monitoring method, device and system

Abstract

The embodiment of the present application provides an aluminum corrosion on-line monitoring instrument, an aluminum corrosion on-line monitoring method, device and system, the aluminum corrosion on-line monitoring instrument includes physical monitoring module and chemical monitoring module that communicate respectively system water, the physical monitoring module and the chemical monitoring module are all provided with current signal collector, the current signal collector is connected with host computer, and current feedback signal is sent to the host computer;The monitoring electrode of the current signal collector adopts the spiral pipe structure aluminum electrode, the spiral pipe structure aluminum electrode is divided into different sub-electrodes according to the different spiral pipe rotary arm inclination, and is used for monitoring the corrosion trend of each sub-electrode;The inert electrode of the current signal collector adopts the bus structure, the inert electrode is arranged at the center point of the spiral pipe tubular electrode, and is used for monitoring the total corrosion trend, and the present application can quickly, accurately and conveniently monitor the aluminum corrosion.

Description

Technical Field

[0001] This application relates to the field of monitoring equipment, specifically to an online aluminum corrosion monitoring instrument, an online aluminum corrosion monitoring method, a device, and a system. Background Technology

[0002] In recent years, with industrial development, aluminum, due to its high heat transfer and electrical conductivity, has been widely used in power transmission and distribution systems and power plant boiler heat exchange systems. As a metal, aluminum inevitably corrodes, therefore, companies have strengthened corrosion prevention management of their production equipment. Aluminum corrosion monitoring is an important means of determining whether aluminum has corroded. Currently, this is mainly done through manual sampling and water sample analysis to assess the corrosion status of aluminum equipment. However, manual analysis methods cannot accurately determine the corrosion trend, nor can they identify the causes of corrosion or the key areas of corrosion.

[0003] Therefore, researching an online corrosion monitoring method is extremely important. This method can provide real-time monitoring of corrosion dynamics in key corrosion areas of equipment, offer early warnings, and assist in corrosion prevention and control, thereby helping to manage potential corrosion hazards and ensure the safe and smooth operation of production facilities. Currently, online corrosion monitoring methods for aluminum are still under development. Research primarily focuses on determining the corrosion trend by analyzing changes in current, resistance, and potential between sheet-like aluminum electrodes, inert electrodes, and reference electrodes (linear polarization method, also known as polarization resistance method). However, this research has encountered bottlenecks. This is mainly because aluminum surfaces are easily passivated, much like how an aluminum kettle won't leak when boiling water at home. Under normal conditions, corrosion is difficult to occur. The passivation film on the aluminum surface prevents the uniform generation of electrochemical reactions. Therefore, the aluminum corrosion rate depends on the rate of passivation film destruction, thus limiting the effectiveness of the linear polarization method. This limitation mainly manifests in its inability to fully cover both physically and chemically induced corrosion.

[0004] Physically induced corrosion: Most aluminum heat exchangers used in current enterprises employ tubular heat exchange structures, especially large heat exchange devices such as cold water systems in power plant boiler rooms. These devices utilize long tube bundles and high flow velocities, with frequent bends at the tube-to-tube junctions. This leads to a classic corrosion phenomenon: "flow-accelerated corrosion." When high-speed water flows through bends, hydraulic decomposition occurs, with both lateral shearing and longitudinal impact forces. This damages the existing passivation film, creating a cycle of passivation film destruction, repair, and re-destruction, resulting in corrosion damage to the aluminum substrate. Furthermore, the degree of damage varies depending on the bend's curvature. Chemically induced corrosion: According to the Bubai-aluminum-pH diagram at 25℃, the aluminum passivation film is stable within a certain pH range (temperature changes alter the pH range). However, outside this range, the aluminum passivation film undergoes accelerated dissolution, creating a cycle of passivation film destruction, repair, and re-destruction, resulting in chemically induced corrosion. Physically and chemically induced corrosion sometimes exist alone, and sometimes they occur together, which makes aluminum corrosion monitoring difficult.

[0005] The commonly used technique in current technology is the linear polarization resistance (LPR) method, also known as the polarization resistance method. Its theoretical basis for determining the metal corrosion rate is the Stern linear polarization equation, which is derived under numerous constraints, including uniform electrochemical corrosion of the metal and its medium, negligible solution resistance, and only two electrode reactions occurring on the corroding metal electrode, both controlled by activated polarization. Therefore, the linear polarization method has certain limitations: 1) Its applicability is limited, only applicable to situations where uniform electrochemical corrosion occurs in the electrolyte; 2) When the electrode surface is in an inactive state, such as when covered with a dense oxide film, the polarization resistance measurement will show a large deviation, and additional redox reactions during the measurement may also affect the accuracy of the measurement.

[0006] The inventors discovered that the main shortcomings of current research are twofold. First, the electrode structure and irregularly shaped aluminum heat exchangers differ significantly, making it impossible to accurately simulate physically induced corrosion processes. Furthermore, when chemically induced corrosion is weak, it cannot effectively damage the passivation film, resulting in weak and discontinuous current generation that signals no corrosion trend. Additionally, it cannot identify easily corroded areas based on differences in the installation of internal components within the heat exchanger; moreover, it cannot distinguish between physically and chemically induced corrosion, leading to limited and inconsistent results. Second, because aluminum readily forms a dense oxide film on its surface, the inherent defects of the linear polarization method cannot be avoided, and the small electrode area generates a small current, causing significant monitoring errors.

[0007] Therefore, based on years of experience and practice in related industries, the inventor proposes an online aluminum corrosion monitoring instrument, online aluminum corrosion monitoring method, device and system to overcome the defects of the prior art. Summary of the Invention

[0008] To address the problems in the prior art, this application provides an online aluminum corrosion monitoring instrument, an online aluminum corrosion monitoring method, a device, and a system, which can quickly, accurately, and conveniently monitor aluminum corrosion.

[0009] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0010] In a first aspect, this application provides an online aluminum corrosion monitoring instrument, comprising: a physical monitoring module and a chemical monitoring module respectively connected to system water, wherein both the physical monitoring module and the chemical monitoring module are equipped with a current signal acquisition device, the current signal acquisition device is connected to a host computer and sends a current feedback signal to the host computer;

[0011] The monitoring electrode of the current signal acquisition device adopts a helical tube structure aluminum electrode. The helical tube structure aluminum electrode is divided into different sub-electrodes according to the different tilt angles of the helical tube arms, which are used to monitor the corrosion trend of each sub-electrode.

[0012] The inert electrode of the current signal acquisition device adopts a busbar structure. The inert electrode is located at the center point of the spiral tubular electrode and is used to monitor the overall corrosion trend.

[0013] The physical monitoring module current signal acquisition unit is equipped with a booster pump, which is used to adjust the flow rate inside the physical monitoring module current signal acquisition unit to match the flow rate of the monitored equipment system.

[0014] The chemical monitoring module current signal acquisition unit is equipped with a regulating valve, which is used to regulate the water flow rate inside the chemical monitoring module current signal acquisition unit to maintain it within a set range.

[0015] Furthermore, the physical monitoring module current signal acquisition unit and / or the chemical monitoring module current signal acquisition unit are also provided with a straight electrode, which is used to acquire electrical signals when physical corrosion and chemical corrosion coexist.

[0016] Furthermore, the sub-electrodes are insulated using insulating support flanges to form parallel conductivity between the sub-electrodes.

[0017] Furthermore, the current signal acquisition device is equipped with a flow meter, which is connected to the host computer and sends a flow feedback signal to the host computer.

[0018] Furthermore, the booster pump is connected to the host computer via a pump control line.

[0019] Furthermore, the regulating valve is connected to the host computer via a regulating valve opening control line.

[0020] Furthermore, the inert electrode is positioned at the center point of the spiral tubular electrode via an insulating support frame of the insulating support flange.

[0021] Furthermore, the inert electrode is made of 316L stainless steel.

[0022] Furthermore, the material of the monitoring electrode is the same as that of the monitored device.

[0023] Secondly, this application provides an online monitoring method for aluminum corrosion, applied to a host computer, wherein the host computer is communicatively connected to the aforementioned online aluminum corrosion monitoring instrument, comprising:

[0024] Receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument, and calculate the cumulative charge of the physical module bus electrode, the chemical module bus electrode, and each sub-electrode within a given period based on the current feedback signal;

[0025] The aluminum corrosion trend is determined based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period.

[0026] Further, determining the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period includes:

[0027] Based on the linear slope change of the current feedback signal sent by the physical monitoring module and the chemical monitoring module of the aluminum corrosion online monitoring instrument within a set time period, the physical slope value, the chemical slope value, and the preset blank slope value are determined.

[0028] When the physical slope value and the chemical slope value are substantially equal and greater than the blank slope value, chemically induced corrosion is determined to have occurred.

[0029] Physically induced corrosion is determined to have occurred when the physical slope value is greater than the chemical slope value and the chemical slope value is substantially equal to the blank slope value.

[0030] When the physical slope value is greater than the chemical slope value, and the chemical slope value is greater than the blank slope value, it is determined that both physical-induced corrosion and chemical-induced corrosion occur simultaneously.

[0031] Furthermore, the step of determining the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period also includes:

[0032] When it is determined that physical-induced corrosion has occurred or that both physical-induced corrosion and chemical-induced corrosion have occurred simultaneously, the cumulative charge value of each sub-electrode is determined based on the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument.

[0033] The key corrosion areas are determined based on the magnitude of the cumulative electrical charge value of each sub-electrode.

[0034] Furthermore, the step of determining the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period also includes:

[0035] The mass in grams of aluminum electrode reaction is calculated by converting the number of moles of electrons corresponding to the accumulated charge and the number of electrons lost in the electrochemical reaction of aluminum.

[0036] When determining that chemically induced corrosion has occurred, the corresponding total corrosion amount is determined based on the corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the total solid-liquid contact area of ​​the aluminum system.

[0037] When physical-induced corrosion is determined, the blank corrosion amount is determined based on the blank corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow; the physical corrosion amount is determined based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow; and the corresponding total corrosion amount is determined based on the blank corrosion amount and the physical corrosion amount.

[0038] When determining that both chemically induced corrosion and physically induced corrosion occur simultaneously, the total corrosion amount of the straight pipe section is determined based on the corrosion amount of the aluminum electrode straight pipe section, the area of ​​the aluminum electrode in the straight pipe section, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow. The physical corrosion amount is determined based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow. The corresponding total corrosion amount is determined based on the total corrosion amount of the straight pipe section and the physical corrosion amount.

[0039] Thirdly, this application provides an online aluminum corrosion monitoring device, comprising:

[0040] The current signal receiving module is used to receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument, and to accumulate and calculate the electrical charge of the physical module bus electrode, the chemical module bus electrode, and each sub-electrode within a given period based on the current feedback signal.

[0041] The corrosion trend judgment module is used to determine the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period.

[0042] Furthermore, the corrosion trend judgment module includes:

[0043] The slope value determination unit is used to determine the physical slope value, chemical slope value, and preset blank slope value based on the linear slope change of the current feedback signal sent by the physical monitoring module and chemical monitoring module of the aluminum corrosion online monitoring instrument within a set time period.

[0044] A chemical corrosion determination unit is used to determine that chemically induced corrosion has occurred when the physical slope value and the chemical slope value are substantially equal and greater than the blank slope value.

[0045] A physical corrosion determination unit is used to determine that physical-induced corrosion has occurred when the physical slope value is greater than the chemical slope value and the chemical slope value is substantially equal to the blank slope value.

[0046] A dual corrosion determination unit is used to determine that both physical-induced corrosion and chemical-induced corrosion occur simultaneously when the physical slope value is greater than the chemical slope value and the chemical slope value is greater than the blank slope value.

[0047] Furthermore, the corrosion trend judgment module also includes:

[0048] The current accumulation calculation unit is used to determine the cumulative value of the charge of each sub-electrode based on the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument when it is determined that physical induced corrosion has occurred or that both physical induced corrosion and chemical induced corrosion have occurred simultaneously.

[0049] The corrosion area determination unit is used to determine the key corrosion areas based on the magnitude of the cumulative electrical charge value of each sub-electrode.

[0050] Furthermore, the corrosion trend judgment module also includes:

[0051] The mass-to-gram calculation unit is used to calculate the mass-to-gram of aluminum electrode reaction by using the number of molar electrons corresponding to the accumulated charge and the number of moles of aluminum that have been reacted based on the number of electrons lost in the electrochemical reaction of aluminum.

[0052] The total corrosion calculation unit is used to determine the corresponding total corrosion amount based on the corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the total solid-liquid contact area of ​​the aluminum system when chemically induced corrosion is determined to have occurred.

[0053] The physical corrosion calculation unit is used to determine the blank corrosion amount based on the blank corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow when physical induced corrosion is determined to have occurred; to determine the physical corrosion amount based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow; and to determine the corresponding total corrosion amount based on the blank corrosion amount and the physical corrosion amount.

[0054] The chemical corrosion calculation unit is used to determine the total corrosion amount of the straight pipe section when both chemically induced corrosion and physically induced corrosion occur simultaneously. This is done by considering the corrosion amount of the straight pipe section with aluminum electrodes, the area of ​​the aluminum electrodes in the straight pipe section, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow. The unit also determines the physical corrosion amount based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow. Finally, the unit determines the corresponding total corrosion amount based on the total corrosion amount of the straight pipe section and the physical corrosion amount.

[0055] Fourthly, this application provides an online aluminum corrosion monitoring system, including an online aluminum corrosion monitor as described above that is connected to the system water, and a host computer that is connected to the signal of the online aluminum corrosion monitor;

[0056] The host computer includes:

[0057] The current signal receiving module is used to receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument, and to accumulate and calculate the electrical charge of the physical module bus electrode, the chemical module bus electrode, and each sub-electrode within a given period based on the current feedback signal.

[0058] The corrosion trend judgment module is used to determine the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period.

[0059] Fifthly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the online aluminum corrosion monitoring method.

[0060] Sixthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the online aluminum corrosion monitoring method described above.

[0061] In a seventh aspect, this application provides a computer program product, including a computer program / instructions that, when executed by a processor, implement the steps of the online aluminum corrosion monitoring method described above.

[0062] As can be seen from the above technical solutions, this application provides an online aluminum corrosion monitoring instrument, an online aluminum corrosion monitoring method, an apparatus and a system, which simultaneously monitors the trends of physically induced corrosion and chemically induced corrosion through the physical monitoring module and the chemical monitoring module of the online aluminum corrosion monitoring instrument. Attached Figure Description

[0063] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0064] Figure 1 This is a schematic diagram of the structure of the online aluminum corrosion monitoring instrument described in this application;

[0065] Figure 2 This is a schematic diagram of the structure of the spiral tube described in this application;

[0066] Figure 3 This is a schematic diagram of the structure of the spiral tube arm described in this application;

[0067] Figure 4 This is a schematic diagram of the current signal acquisition circuit described in this application;

[0068] Figure 5 This is a schematic diagram of the structure of the insulating support flange described in this application;

[0069] Figure 6 This is a structural schematic diagram showing the location of the inert electrode busbar described in this application;

[0070] Figure 7 This is a schematic diagram of the structure of the online aluminum corrosion monitoring system described in this application;

[0071] Figure 8 This is a schematic diagram of the monitoring power consumption over time in this application;

[0072] Figure 9 This is one of the flowcharts illustrating the online aluminum corrosion monitoring method described in this application;

[0073] Figure 10 This is the second schematic diagram of the online monitoring method for aluminum corrosion described in this application;

[0074] Figure 11 This is the third flowchart illustrating the online aluminum corrosion monitoring method described in this application;

[0075] Figure 12 This is the fourth flowchart illustrating the online aluminum corrosion monitoring method described in this application;

[0076] Figure 13 This is one of the schematic diagrams of the online aluminum corrosion monitoring device described in this application;

[0077] Figure 14 This is a second schematic diagram of the online aluminum corrosion monitoring device described in this application;

[0078] Figure 15This is the third schematic diagram of the online aluminum corrosion monitoring device described in this application;

[0079] Figure 16 This is the fourth schematic diagram of the online aluminum corrosion monitoring device described in this application;

[0080] Figure 17 This is a schematic diagram of the structure of the electronic device in the embodiments of this application. Detailed Implementation

[0081] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0082] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0083] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0084] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0085] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0086] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0087] In view of the problems existing in the prior art, and in order to enable rapid, accurate and convenient monitoring of aluminum corrosion, this application provides an embodiment of an online aluminum corrosion monitoring instrument, see [link to embodiment]. Figure 1 In this embodiment, the aluminum corrosion online monitoring instrument specifically includes: a physical monitoring module and a chemical monitoring module that are respectively connected to the system water. Both the physical monitoring module and the chemical monitoring module are equipped with a current signal acquisition device. The current signal acquisition device is connected to the host computer and sends a current feedback signal to the host computer.

[0088] See Figure 2 The monitoring electrode of the current signal acquisition device adopts a spiral tube structure aluminum electrode. The spiral tube structure aluminum electrode is divided into different sub-electrodes according to the different tilt angles of the spiral tube arm, which are used to monitor the corrosion trend of each sub-electrode.

[0089] See Figure 3 In a specific example of this application, the diameter of the inert electrode busbar is generally not less than 1 mm, while ensuring that the distance between the inner wall of the aluminum electrode and the inert electrode busbar is greater than 4 mm. To meet the flow velocity requirements within the tubular aluminum electrode, the length of the spiral arm is not less than 30 mm.

[0090] The inert electrode of the current signal acquisition device adopts a busbar structure. The inert electrode is located at the center point of the spiral tubular electrode and is used to monitor the overall corrosion trend.

[0091] The physical monitoring module current signal acquisition unit is equipped with a booster pump, which is used to adjust the flow rate inside the physical monitoring module current signal acquisition unit to match the flow rate of the monitored equipment system.

[0092] The chemical monitoring module current signal acquisition unit is equipped with a regulating valve, which is used to regulate the water flow rate inside the chemical monitoring module current signal acquisition unit to maintain it within a set range.

[0093] Therefore, the overall design of this application adopts a dual-structure design of physical monitoring module and chemical monitoring module, which can simultaneously monitor the trends of physical-induced corrosion and chemical-induced corrosion.

[0094] As can be seen from the above description, the online aluminum corrosion monitoring instrument provided in the embodiments of this application simultaneously monitors the trends of physically induced corrosion and chemically induced corrosion through the physical monitoring module and the chemical monitoring module of the online aluminum corrosion monitoring instrument.

[0095] In one feasible embodiment of this application, the current signal acquisition device of the physical monitoring module and / or the current signal acquisition device of the chemical monitoring module are further provided with a straight electrode. The straight electrode is used to acquire the electrical signal when physical corrosion and chemical corrosion coexist. Thus, by introducing a straight electrode, this application monitors the accelerating effect of flow rate and chemical dissolution on corrosion when physical and chemical induced corrosion coexist.

[0096] In one feasible embodiment of this application, see [link to relevant documentation]. Figure 4 The sub-electrodes are insulated with insulating support flanges to form parallel conductivity between the sub-electrodes.

[0097] In one feasible embodiment of this application, the current signal acquisition device is equipped with a flow meter, which is connected to the host computer and sends a flow feedback signal to the host computer.

[0098] In one feasible embodiment of this application, the booster pump is connected to the host computer via a pump control line. This application ensures that the flow velocity in the physical module current signal collector is consistent with the flow velocity of the monitored equipment system by setting a booster pump in front of the physical monitoring module current signal collector, thereby simulating the system operation to the greatest extent.

[0099] In one feasible embodiment of this application, the regulating valve is connected to the host computer via a regulating valve opening control line. This application ensures that the water flow rate in the chemical module current signal collector is within a certain range by setting a regulating valve before the chemical monitoring module current signal collector, thus ensuring the representativeness of chemically induced corrosion.

[0100] In one feasible embodiment of this application, see [link to relevant documentation]. Figure 5 and Figure 6 The inert electrode is set at the center point of the spiral tubular electrode through the insulating support frame of the insulating support flange. The inert electrode combined with the parallel sub-electrode method of this application can accurately monitor the corrosion trend of each sub-electrode and also monitor the overall corrosion trend.

[0101] In one feasible embodiment of this application, the inert electrode is made of 316L stainless steel.

[0102] In one feasible embodiment of this application, the material of the monitoring electrode is the same as that of the monitored device.

[0103] See Figure 9 This application provides an embodiment of an online aluminum corrosion monitoring method, applied to a host computer, which is communicatively connected to the aforementioned online aluminum corrosion monitoring instrument, comprising:

[0104] Step S101: Receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument.

[0105] Step S102: Determine the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period.

[0106] In one embodiment of this application, see Figure 10 The above step S102 also includes:

[0107] Step S201: Based on the linear slope change of the current feedback signal sent by the physical monitoring module and the chemical monitoring module of the aluminum corrosion online monitoring instrument within a set time period, determine the physical slope value, the chemical slope value, and the preset blank slope value.

[0108] Step S202: When the physical slope value and the chemical slope value are substantially equal and greater than the blank slope value, it is determined that chemically induced corrosion has occurred.

[0109] Step S203: When the physical slope value is greater than the chemical slope value, and the chemical slope value is substantially equal to the blank slope value, it is determined that physical-induced corrosion has occurred.

[0110] Step S204: When the physical slope value is greater than the chemical slope value and the chemical slope value is greater than the blank slope value, it is determined that physical-induced corrosion and chemical-induced corrosion occur simultaneously.

[0111] In one embodiment of this application, see Figure 11 The above step S102 also includes:

[0112] Step S301: When it is determined that physical induced corrosion has occurred or that both physical induced corrosion and chemical induced corrosion have occurred simultaneously, the cumulative charge value of each sub-electrode is determined based on the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument.

[0113] Step S302: Determine the key corrosion areas based on the magnitude of the cumulative electrical charge value of each sub-electrode.

[0114] In one embodiment of this application, see Figure 12 The above step S102 also includes:

[0115] Step S401: Calculate the mass in grams of aluminum electrode reaction by using the number of moles of electrons corresponding to the accumulated charge and the number of electrons lost in the electrochemical reaction of aluminum.

[0116] Step S402: When chemically induced corrosion is determined to have occurred, the corresponding total corrosion amount is determined based on the corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the total solid-liquid contact area of ​​the aluminum system.

[0117] Step S403: When physical induced corrosion is determined to have occurred, the blank corrosion amount is determined based on the blank corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow; the physical corrosion amount is determined based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow; the corresponding total corrosion amount is determined based on the blank corrosion amount and the physical corrosion amount.

[0118] Step S404: When it is determined that both chemically induced corrosion and physically induced corrosion occur simultaneously, the total corrosion amount of the straight pipe section is determined based on the corrosion amount of the aluminum electrode straight pipe section, the area of ​​the aluminum electrode in the straight pipe section, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow; the physical corrosion amount is determined based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow; the corresponding total corrosion amount is determined based on the total corrosion amount of the straight pipe section and the physical corrosion amount.

[0119] As can be seen from the above description, the online aluminum corrosion monitoring method provided in the embodiments of this application monitors the trends of physically induced corrosion and chemically induced corrosion simultaneously through the physical monitoring module and the chemical monitoring module of the online aluminum corrosion monitoring instrument.

[0120] To accurately monitor aluminum corrosion, this application provides an embodiment of an online aluminum corrosion monitoring device for implementing all or part of the aforementioned online aluminum corrosion monitoring method. See [link to embodiment]. Figure 13 The aforementioned online aluminum corrosion monitoring device specifically includes the following components:

[0121] The current signal receiving module 10 is used to receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument.

[0122] The corrosion trend judgment module 20 is used to determine the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period.

[0123] In one embodiment of the online aluminum corrosion monitoring device of this application, see [reference needed]. Figure 14 The corrosion trend judgment module 20 further includes:

[0124] The slope value determination unit 21 is used to determine the physical slope value, the chemical slope value, and the preset blank slope value based on the linear slope change of the current feedback signal sent by the physical monitoring module and the chemical monitoring module of the aluminum corrosion online monitoring instrument within a set time period.

[0125] The chemical corrosion determination unit 22 is used to determine that chemically induced corrosion has occurred when the physical slope value and the chemical slope value are substantially equal and greater than the blank slope value.

[0126] The physical corrosion determination unit 23 is used to determine that physical-induced corrosion has occurred when the physical slope value is greater than the chemical slope value and the chemical slope value is substantially equal to the blank slope value.

[0127] The dual corrosion determination unit 24 is used to determine that physical-induced corrosion and chemical-induced corrosion occur simultaneously when the physical slope value is greater than the chemical slope value and the chemical slope value is greater than the blank slope value.

[0128] In one embodiment of the online aluminum corrosion monitoring device of this application, see [reference needed]. Figure 15 The corrosion trend judgment module 20 further includes:

[0129] The current accumulation calculation unit 25 is used to determine the cumulative value of the charge of each sub-electrode based on the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument when it is determined that physical induced corrosion has occurred or that both physical induced corrosion and chemical induced corrosion have occurred simultaneously.

[0130] The corrosion area determination unit 26 is used to determine the key corrosion areas based on the magnitude of the cumulative electrical charge value of each sub-electrode.

[0131] In one embodiment of the online aluminum corrosion monitoring device of this application, see [reference needed]. Figure 16 The corrosion trend judgment module 20 further includes:

[0132] The mass gram calculation unit 27 is used to calculate the mass gram of aluminum electrode reaction by using the number of molar electrons corresponding to the accumulated charge and the number of moles of aluminum that are reacted based on the number of electrons lost in the electrochemical reaction of aluminum.

[0133] The total corrosion calculation unit 28 is used to determine the corresponding total corrosion amount based on the corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the total solid-liquid contact area of ​​the aluminum system when chemically induced corrosion is determined to have occurred.

[0134] The physical corrosion calculation unit 29 is used to determine the blank corrosion amount based on the blank corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow when physical induced corrosion is determined to have occurred; to determine the physical corrosion amount based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow; and to determine the corresponding total corrosion amount based on the blank corrosion amount and the physical corrosion amount.

[0135] The chemical corrosion calculation unit 210 is used to determine the total corrosion amount of the straight pipe section when both chemically induced corrosion and physically induced corrosion occur simultaneously. This is done by calculating the corrosion amount of the straight pipe section, the area of ​​the aluminum electrode in the straight pipe section, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow. The unit also determines the physical corrosion amount based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow. Finally, the unit determines the corresponding total corrosion amount based on the total corrosion amount of the straight pipe section and the physical corrosion amount.

[0136] In view of the problems existing in the prior art, and in order to enable rapid, accurate and convenient monitoring of aluminum corrosion, this application provides an embodiment of an online aluminum corrosion monitoring instrument, see [link to embodiment]. Figure 7 In this embodiment, this application provides an online aluminum corrosion monitoring system, including an online aluminum corrosion monitor as described above that is connected to the system water, and a host computer that is connected to the signal of the online aluminum corrosion monitor.

[0137] The host computer includes:

[0138] The current signal receiving module is used to receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument, and to accumulate and calculate the electrical charge of the physical module bus electrode, the chemical module bus electrode, and each sub-electrode within a given period based on the current feedback signal.

[0139] The corrosion trend judgment module is used to determine the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period.

[0140] As can be seen from the above description, the online aluminum corrosion monitoring system provided in the embodiments of this application monitors the trends of physically induced corrosion and chemically induced corrosion simultaneously through the physical monitoring module and the chemical monitoring module of the online aluminum corrosion monitoring instrument.

[0141] Meanwhile, this application provides an online aluminum corrosion monitoring system, including an online aluminum corrosion monitor as described above that is connected to the system water, and a host computer that is connected to the signal of the online aluminum corrosion monitor.

[0142] The host computer is used to receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument, and to determine the aluminum corrosion trend based on the linear slope change of the cumulative charge value of the bus electrode within a set time period.

[0143] In one feasible embodiment of this application, determining the aluminum corrosion trend based on the linear slope change of the cumulative charge value of the bus electrode within a set time period includes:

[0144] Based on the linear slope change of the current feedback signal sent by the physical monitoring module and the chemical monitoring module of the aluminum corrosion online monitoring instrument within a set time period, the physical slope value, the chemical slope value, and the preset blank slope value are determined.

[0145] When the physical slope value and the chemical slope value are substantially equal and greater than the blank slope value, chemically induced corrosion is determined to have occurred.

[0146] Physically induced corrosion is determined to have occurred when the physical slope value is greater than the chemical slope value and the chemical slope value is substantially equal to the blank slope value.

[0147] When the physical slope value is greater than the chemical slope value, and the chemical slope value is greater than the blank slope value, it is determined that both physical-induced corrosion and chemical-induced corrosion occur simultaneously.

[0148] In one feasible embodiment of this application, determining the aluminum corrosion trend based on the linear slope change of the cumulative charge value of the bus electrode within a set time period further includes:

[0149] When it is determined that physical-induced corrosion has occurred or that both physical-induced corrosion and chemical-induced corrosion have occurred simultaneously, the cumulative charge value of each sub-electrode is determined based on the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument.

[0150] The key corrosion areas are determined based on the magnitude of the cumulative electrical charge value of each sub-electrode.

[0151] In one feasible embodiment of this application, determining the aluminum corrosion trend based on the linear slope change of the cumulative charge value of the bus electrode within a set time period further includes:

[0152] The mass in grams of aluminum electrode reaction is calculated by converting the number of moles of electrons corresponding to the accumulated charge and the number of electrons lost in the electrochemical reaction of aluminum.

[0153] When determining that chemically induced corrosion has occurred, the corresponding total corrosion amount is determined based on the corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the total solid-liquid contact area of ​​the aluminum system.

[0154] When physical-induced corrosion is determined, the blank corrosion amount is determined based on the blank corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow; the physical corrosion amount is determined based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow; and the corresponding total corrosion amount is determined based on the blank corrosion amount and the physical corrosion amount.

[0155] When determining that both chemically induced corrosion and physically induced corrosion occur simultaneously, the total corrosion amount of the straight pipe section is determined based on the corrosion amount of the aluminum electrode straight pipe section, the area of ​​the aluminum electrode in the straight pipe section, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow. The physical corrosion amount is determined based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow. The corresponding total corrosion amount is determined based on the total corrosion amount of the straight pipe section and the physical corrosion amount.

[0156] As can be seen from the above technical solution, this application provides an online aluminum corrosion monitoring system that simultaneously monitors the trends of physically induced corrosion and chemically induced corrosion through the physical monitoring module and chemical monitoring module of the online aluminum corrosion monitoring instrument.

[0157] Example 1: Determination of Corrosion Trend

[0158] Blank experiment: Use on-site engineering cooling water, control the pH range to ensure it falls within the range where Bubai-aluminum-pH does not cause corrosion, monitor the electrical charge using a chemical module, plot the electrical charge (Y-axis) as the ordinate and time (X-axis) as the abscissa, and use Excel's automatic linear relationship generation method to create a curve (e.g.) Figure 8 This generates a function with a slope of K, where b is the intercept generated under linear conditions. The slope value at this point is recorded as K (blank).

[0159] Application of engineering corrosion trend judgment method: During monitoring, the magnitude of the corrosion trend is judged by comparing the K values ​​of the linear curves formed by the total electricity accumulated in the physical module and the time in the chemical module; and the K values ​​of the two modules and the blank K value are used as references to determine the type of corrosion. 物 The slope value generated for the total power consumption and time monitored by the physical module. K 化 The slope values ​​generated for the total charge and time monitored by the chemical module.

[0160] (1) When K 物 and K 化 Basically close to K 空白 At that time, the system showed a weak corrosion tendency and the system operated well.

[0161] (2) When K 物 and K 化 They are basically equal and greater than K. 空白At that time, chemically induced corrosion occurred in the system, and K 化 and K 空白 The greater the deviation, the more obvious the chemical corrosion trend.

[0162] (3) When K 化 Approaching K 空白 At that time, and K 物 Greater than K 化 The system experienced physically induced corrosion, and K 物 and K 化 The greater the deviation, the more obvious the physical corrosion trend.

[0163] (4) When K 物 >K 化 >K 空白 At that time, the system exhibits both physical and chemically induced corrosion, and the larger the K value, the stronger the corrosion trend.

[0164] Example 2: Identification of Key Corrosion Areas

[0165] Chemically induced corrosion is a type of comprehensive corrosion. When only chemical corrosion occurs, it will not cause local damage to the system if the trend is not very serious. In actual engineering applications, local damage is often caused by physical corrosion, especially when both physical and chemical corrosion are present at the same time, the resulting local damage will be more severe.

[0166] When K 化 Approaching K 空白 At that time, and K 物 Greater than K 化 When physical-induced corrosion occurs in the system: check the cumulative electrical charge value of the three sub-electrodes. The larger the cumulative value, the greater the corrosion trend in the equipment area that reaches this arc angle. This area needs to be checked in detail during the overhaul inspection.

[0167] When K 物 >K 化 >K 空白 When the system experiences both physically and chemically induced corrosion: check the cumulative electrical charge values ​​of the three sub-electrodes. A higher cumulative value indicates a greater corrosion trend in the equipment area reaching that angle of inclination. Simultaneously compare the cumulative electrical charge values ​​of the straight tube electrodes under both modules. A significant difference indicates a severe exceedance of the heat exchange system flow rate, requiring immediate flow rate inspection and intervention. Furthermore, utilize major overhauls to sample and inspect easily corroded areas, analyze the degree of corrosion, and implement appropriate repair measures.

[0168] Example 3: Estimation of Total Corrosion

[0169] Due to the unique characteristics of aluminum corrosion, in practical engineering applications in aquatic environments, the rate of electrochemical oxide film formation in aluminum substrates without an oxide film exceeds the rate of oxide film degradation. Therefore, the rate of oxide film degradation determines the rate of aluminum corrosion. Thus, the working mode of a galvanic cell can fully represent the aluminum corrosion process. Therefore, according to the formula 1 mole of substance = 6.02 × 10⁻⁶... 23 Particle, 1 coulomb = 6.25 × 10⁻⁶ 18 Electron, Al - 3e = Al 3+ An aluminum particle can release three electrons, and the total amount of aluminum corrosion can be calculated by summing the accumulated charges ∑Q.

[0170] The total corrosion of the aluminum electrode is calculated using the following formula (1).

[0171]

[0172] A schematic estimate of the total corrosion amount when only chemically induced corrosion occurs in the system:

[0173] Take the cumulative chemical charge ∑Q, and calculate the aluminum electrode corrosion amount M according to formula (1). 铝电极 Total corrosion amount F 化学 Calculate using the following formula (2).

[0174]

[0175] When only physically induced corrosion occurs in the system, the total corrosion amount is estimated as follows:

[0176] Calculate the ∑Q corresponding to each tilt angle of the physical monitoring module, and calculate the corrosion amount M of each sub-electrode according to formula (1). 铝子电极 The corrosion amount at each bend is calculated according to formula (3); at the same time, the cumulative electrical charge of the chemical module ∑Q is taken, and M is converted according to formula (1). 铝电极空白 The corrosion loss of the aluminum system is calculated according to formula (4). The total corrosion amount is calculated according to formula (5).

[0177]

[0178]

[0179] F 总 =F 空白 +F 物理 (5)

[0180] When both physically-induced and chemically-induced corrosion occur simultaneously in the system, the total corrosion amount is estimated as follows:

[0181] The total corrosion at the elbow is estimated according to formula (3). For corrosion at non-elbow locations, the corrosion amount M of each sub-electrode is calculated by taking ∑Q of the straight pipe electrode in the physical module and converting it according to formula (1). 铝电极直 The total corrosion amount of the straight pipe section is calculated according to formula (6).

[0182] The total corrosion amount is shown in equation (8).

[0183]

[0184]

[0185] F 总 =F 直 +F 物理 (8)

[0186] Based on the above, this application can achieve at least the following technical effects:

[0187] 1. It can simultaneously monitor both physically-induced and chemically-induced corrosion, and determine which type of corrosion plays a dominant role.

[0188] 2. The cumulative charge and time relationship curve monitoring and judgment mode is adopted to monitor the change of the generated linear slope, so that the results are intuitive and reliable and are not affected by the non-activated state of the electrode surface.

[0189] 3. Based on the corrosion trend monitoring results, the key areas where corrosion occurs in aluminum equipment can be identified.

[0190] 4. The spiral tubular electrode is closer to the irregular water-liquid contact surface of the aluminum heat exchanger structure, which can accurately induce physical corrosion. In addition, the tubular electrode has a large surface area and generates a stable current signal, ensuring the accuracy of monitoring.

[0191] 5. Through power accumulation monitoring, and based on Al - 3e = Al 3+ This allows for the estimation of the total corrosion volume of the aluminum system.

[0192] 6. An inert busbar electrode is set at the center of the tubular electrode, which can simultaneously monitor the corrosion trend of each sub-electrode and the overall corrosion trend, ensuring the uniformity of the working environment of the sub-aluminum electrodes and effectively simulating actual engineering applications.

[0193] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

[0194] From a hardware perspective, this application provides an embodiment of an electronic device for implementing all or part of the aforementioned online aluminum corrosion monitoring method. The electronic device specifically includes the following components:

[0195] The system comprises a processor, memory, a communications interface, and a bus; wherein the processor, memory, and communications interface communicate with each other via the bus; the communications interface is used to realize information transmission between the online aluminum corrosion monitoring device and core business systems, user terminals, and related databases and other related devices; the logic controller can be a desktop computer, tablet computer, or mobile terminal, etc., and this embodiment is not limited to these. In this embodiment, the logic controller can be implemented with reference to the embodiments of the online aluminum corrosion monitoring method and the online aluminum corrosion monitoring device in the embodiments, the contents of which are incorporated herein, and repeated details will not be described again.

[0196] It is understood that the user terminal may include smartphones, tablet computers, network set-top boxes, portable computers, desktop computers, personal digital assistants (PDAs), in-vehicle devices, smart wearable devices, etc. Among these, the smart wearable devices may include smart glasses, smartwatches, smart bracelets, etc.

[0197] In practical applications, parts of the online aluminum corrosion monitoring method can be executed on the electronic device side as described above, or all operations can be completed in the client device. The choice can be made based on the processing power of the client device and the limitations of the user's usage scenario. This application does not impose any limitations on this. If all operations are completed in the client device, the client device may further include a processor.

[0198] The aforementioned client device may have a communication module (i.e., a communication unit) that can communicate with a remote server to achieve data transmission. The server may include a server on the task scheduling center side; in other implementation scenarios, it may also include a server on an intermediate platform, such as a server on a third-party server platform that has a communication link with the task scheduling center server. The server may include a single computer device, a server cluster consisting of multiple servers, or a distributed server structure.

[0199] Figure 17 This is a schematic block diagram illustrating the system configuration of the electronic device 9600 according to an embodiment of this application. Figure 17 As shown, the electronic device 9600 may include a central processing unit 9100 and a memory 9140; the memory 9140 is coupled to the central processing unit 9100. It is worth noting that... Figure 17 This is an example; other types of structures can also be used to supplement or replace this structure to achieve telecommunications functions or other functions.

[0200] In one embodiment, the online aluminum corrosion monitoring method can be integrated into the central processing unit 9100. The central processing unit 9100 can be configured to perform the following controls:

[0201] Step S101: Receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument.

[0202] Step S102: Determine the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period.

[0203] As can be seen from the above description, the electronic device provided in this application embodiment monitors the trends of physically induced corrosion and chemically induced corrosion simultaneously through the physical monitoring module and chemical monitoring module of the aluminum corrosion online monitoring instrument.

[0204] In another embodiment, the aluminum corrosion online monitoring device can be configured separately from the central processing unit 9100. For example, the aluminum corrosion online monitoring device can be configured as a chip connected to the central processing unit 9100, and the aluminum corrosion online monitoring method function can be realized through the control of the central processing unit.

[0205] like Figure 17 As shown, the electronic device 9600 may further include: a communication module 9110, an input unit 9120, an audio processor 9130, a display 9160, and a power supply 9170. It is worth noting that the electronic device 9600 does not necessarily need to include these components. Figure 17 All components shown; in addition, the electronic device 9600 may also include Figure 17 For components not shown, please refer to existing technologies.

[0206] like Figure 17 As shown, the central processing unit 9100, sometimes also referred to as a controller or operating control, may include a microprocessor or other processor device and / or logic device, which receives inputs and controls the operation of various components of the electronic device 9600.

[0207] The memory 9140 may be, for example, one or more of a cache, flash memory, hard drive, removable media, volatile memory, non-volatile memory, or other suitable devices. It may store the aforementioned failure-related information, and also store a program for executing that information. The central processing unit 9100 may execute the program stored in the memory 9140 to perform information storage or processing, etc.

[0208] Input unit 9120 provides input to central processing unit 9100. Input unit 9120 may be, for example, a keypad or touch input device. Power supply 9170 provides power to electronic device 9600. Display 9160 displays images and text. Display may be, for example, an LCD display, but is not limited thereto.

[0209] The memory 9140 can be a solid-state memory, such as a read-only memory (ROM), random access memory (RAM), a SIM card, etc. It can also be a memory that retains information even when power is off, can be selectively erased, and contains more data; examples of this type of memory are sometimes referred to as EPROMs. The memory 9140 can also be some other type of device. The memory 9140 includes a buffer memory 9141 (sometimes referred to as a buffer). The memory 9140 may include an application / function storage unit 9142 for storing application programs and function programs or processes for executing the operation of the electronic device 9600 via the central processing unit 9100.

[0210] The memory 9140 may also include a data storage unit 9143 for storing data, such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. The driver storage unit 9144 of the memory 9140 may include various drivers for the electronic device's communication functions and / or for performing other functions of the electronic device (such as messaging applications, address book applications, etc.).

[0211] The communication module 9110 is a transmitter / receiver 9110 that transmits and receives signals via the antenna 9111. The communication module (transmitter / receiver) 9110 is coupled to the central processing unit 9100 to provide input signals and receive output signals, which can be the same as in a conventional mobile communication terminal.

[0212] Based on different communication technologies, multiple communication modules 9110 can be configured in the same electronic device, such as cellular network modules, Bluetooth modules, and / or wireless LAN modules. The communication module (transmitter / receiver) 9110 is also coupled to a speaker 9131 and a microphone 9132 via an audio processor 9130 to provide audio output via the speaker 9131 and receive audio input from the microphone 9132, thereby realizing typical telecommunications functions. The audio processor 9130 may include any suitable buffer, decoder, amplifier, etc. Additionally, the audio processor 9130 is coupled to a central processing unit 9100, enabling on-device recording via the microphone 9132 and on-device playback of stored sound via the speaker 9131.

[0213] Embodiments of this application also provide a computer-readable storage medium capable of implementing all steps of the online aluminum corrosion monitoring method with a server or client as the execution subject in the above embodiments. The computer-readable storage medium stores a computer program that, when executed by a processor, implements all steps of the online aluminum corrosion monitoring method with a server or client as the execution subject in the above embodiments. For example, when the processor executes the computer program, it implements the following steps:

[0214] Step S101: Receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument.

[0215] Step S102: Determine the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period.

[0216] As can be seen from the above description, the computer-readable storage medium provided in the embodiments of this application can simultaneously monitor the trends of physically induced corrosion and chemically induced corrosion through the physical monitoring module and chemical monitoring module of the aluminum corrosion online monitoring instrument.

[0217] Embodiments of this application also provide a computer program product capable of implementing all steps of the online aluminum corrosion monitoring method with the execution subject being a server or client in the above embodiments. When this computer program / instruction is executed by a processor, it implements the steps of the online aluminum corrosion monitoring method. For example, the computer program / instruction implements the following steps:

[0218] Step S101: Receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument.

[0219] Step S102: Determine the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period.

[0220] As can be seen from the above description, the computer program product provided in this application embodiment monitors the trends of physically induced corrosion and chemically induced corrosion simultaneously through the physical monitoring module and chemical monitoring module of the aluminum corrosion online monitoring instrument.

[0221] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0222] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (devices), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0223] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0224] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0225] Specific embodiments have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An online aluminum corrosion monitoring instrument, characterized in that, It includes a physical monitoring module and a chemical monitoring module that are respectively connected to the water in the system. Both the physical monitoring module and the chemical monitoring module are equipped with a current signal acquisition device. The current signal acquisition device is connected to a host computer and sends a current feedback signal to the host computer. The monitoring electrode of the current signal acquisition device is a spiral tubular aluminum electrode. The spiral tubular aluminum electrode is divided into different sub-electrodes according to the different tilt angles of the spiral arm, which are used to monitor the corrosion trend of each sub-electrode. The inert electrode of the current signal acquisition device adopts a busbar structure. The inert electrode is located at the center point of the spiral tubular aluminum electrode and is used to monitor the overall corrosion trend. The physical monitoring module current signal acquisition unit is equipped with a booster pump, which is used to adjust the flow rate inside the physical monitoring module current signal acquisition unit to match the flow rate of the monitored equipment system. The chemical monitoring module current signal acquisition unit is equipped with a regulating valve, which is used to regulate the water flow rate inside the chemical monitoring module current signal acquisition unit to maintain it within a set range.

2. The online aluminum corrosion monitoring instrument according to claim 1, characterized in that, The physical monitoring module current signal acquisition unit and / or the chemical monitoring module current signal acquisition unit are further provided with a straight electrode, which is used to acquire electrical signals when physical corrosion and chemical corrosion coexist.

3. The online aluminum corrosion monitoring instrument according to claim 1, characterized in that, The sub-electrodes are insulated with insulating support flanges to form parallel conductivity between the sub-electrodes.

4. The online aluminum corrosion monitoring instrument according to claim 1, characterized in that, The current signal acquisition device is equipped with a flow meter, which is connected to the host computer and sends a flow feedback signal to the host computer.

5. The online aluminum corrosion monitoring instrument according to claim 1, characterized in that, The booster pump is connected to the host computer via a pump control line.

6. The online aluminum corrosion monitoring instrument according to claim 1, characterized in that, The regulating valve is connected to the host computer via a regulating valve opening control line.

7. The online aluminum corrosion monitoring instrument according to claim 3, characterized in that, The inert electrode is positioned at the center point of the spiral tubular aluminum electrode via an insulating support frame of the insulating support flange.

8. The online aluminum corrosion monitoring instrument according to claim 1, characterized in that, The inert electrode is made of 316L stainless steel.

9. The online aluminum corrosion monitoring instrument according to claim 1, characterized in that, The material of the monitoring electrode is the same as that of the device being monitored.

10. A method for online monitoring of aluminum corrosion, characterized in that, An application is made in a host computer, the host computer being communicatively connected to the online aluminum corrosion monitoring instrument according to any one of claims 1 to 9, comprising: Receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument, and calculate the cumulative charge of the physical module bus electrode, the chemical module bus electrode, and each sub-electrode within a given period based on the current feedback signal; The aluminum corrosion trend is determined based on the linear slope change of the cumulative charge values ​​of the physical module bus electrode and the chemical module bus electrode within a set time period.

11. The online monitoring method for aluminum corrosion according to claim 10, characterized in that, The determination of aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period includes: Based on the linear slope change of the cumulative bus electrode charge value within a given period sent by the physical monitoring module and chemical monitoring module of the aluminum corrosion online monitoring instrument within a set time period, the physical slope value, chemical slope value, and preset blank slope value are determined. When the physical slope value and the chemical slope value are substantially equal and greater than the blank slope value, chemically induced corrosion is determined to have occurred. Physically induced corrosion is determined to have occurred when the physical slope value is greater than the chemical slope value and the chemical slope value is substantially equal to the blank slope value. When the physical slope value is greater than the chemical slope value, and the chemical slope value is greater than the blank slope value, it is determined that both physical-induced corrosion and chemical-induced corrosion occur simultaneously.

12. The online monitoring method for aluminum corrosion according to claim 11, characterized in that, The method of determining the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period further includes: When it is determined that physical-induced corrosion has occurred or that both physical-induced corrosion and chemical-induced corrosion have occurred simultaneously, the cumulative charge value of each sub-electrode is determined based on the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument. The key corrosion areas are determined based on the magnitude of the cumulative electrical charge value of each sub-electrode.

13. The online monitoring method for aluminum corrosion according to claim 11, characterized in that, The method of determining the aluminum corrosion trend based on the linear slope change of the cumulative electrical charge value of the bus electrode within a set time period further includes: The mass in grams of aluminum electrode reaction is calculated by converting the number of moles of electrons corresponding to the accumulated charge and the number of electrons lost in the electrochemical reaction of aluminum. When determining that chemically induced corrosion has occurred, the corresponding total corrosion amount is determined based on the corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the total solid-liquid contact area of ​​the aluminum system. When physical-induced corrosion is determined, the blank corrosion amount is determined based on the blank corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow; the physical corrosion amount is determined based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow; and the corresponding total corrosion amount is determined based on the blank corrosion amount and the physical corrosion amount. When determining that both chemically induced corrosion and physically induced corrosion occur simultaneously, the total corrosion amount of the straight pipe section is determined based on the corrosion amount of the aluminum electrode straight pipe section, the area of ​​the aluminum electrode in the straight pipe section, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow. The physical corrosion amount is determined based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow. The corresponding total corrosion amount is determined based on the total corrosion amount of the straight pipe section and the physical corrosion amount.

14. An online monitoring device for aluminum corrosion, characterized in that, The device is communicatively connected to the online aluminum corrosion monitoring instrument according to any one of claims 1 to 9, comprising: The current signal receiving module is used to receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument, and to accumulate and calculate the electrical charge of the physical module bus electrode, the chemical module bus electrode, and each sub-electrode within a given period based on the current feedback signal. The corrosion trend judgment module is used to determine the aluminum corrosion trend based on the linear slope change of the cumulative charge value of the physical module bus electrode and the chemical module bus electrode within a set time period.

15. The online aluminum corrosion monitoring device according to claim 14, characterized in that, The corrosion trend determination module includes: The slope value determination unit is used to determine the physical slope value, chemical slope value, and preset blank slope value based on the linear slope change of the current feedback signal sent by the physical monitoring module and chemical monitoring module of the aluminum corrosion online monitoring instrument within a set time period. A chemical corrosion determination unit is used to determine that chemically induced corrosion has occurred when the physical slope value and the chemical slope value are substantially equal and greater than the blank slope value. A physical corrosion determination unit is used to determine that physical-induced corrosion has occurred when the physical slope value is greater than the chemical slope value and the chemical slope value is substantially equal to the blank slope value. A dual corrosion determination unit is used to determine that both physical-induced corrosion and chemical-induced corrosion occur simultaneously when the physical slope value is greater than the chemical slope value and the chemical slope value is greater than the blank slope value.

16. The online aluminum corrosion monitoring device according to claim 14, characterized in that, The corrosion trend determination module also includes: The current accumulation calculation unit is used to determine the cumulative value of the charge of each sub-electrode based on the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument when it is determined that physical induced corrosion has occurred or that both physical induced corrosion and chemical induced corrosion have occurred simultaneously. The corrosion area determination unit is used to determine the key corrosion areas based on the magnitude of the cumulative electrical charge value of each sub-electrode.

17. The online aluminum corrosion monitoring device according to claim 14, characterized in that, The corrosion trend determination module also includes: The mass-to-gram calculation unit is used to calculate the mass-to-gram of aluminum electrode reaction by using the number of molar electrons corresponding to the accumulated charge and the number of moles of aluminum that have been reacted based on the number of electrons lost in the electrochemical reaction of aluminum. The total corrosion calculation unit is used to determine the corresponding total corrosion amount based on the corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the total solid-liquid contact area of ​​the aluminum system when chemically induced corrosion is determined to have occurred. The physical corrosion calculation unit is used to determine the blank corrosion amount based on the blank corrosion amount of the aluminum electrode, the area of ​​the aluminum electrode, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow when physical induced corrosion is determined to have occurred; to determine the physical corrosion amount based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow; and to determine the corresponding total corrosion amount based on the blank corrosion amount and the physical corrosion amount. The chemical corrosion calculation unit is used to determine the total corrosion amount of the straight pipe section when both chemically induced corrosion and physically induced corrosion occur simultaneously. This is done by considering the corrosion amount of the straight pipe section with aluminum electrodes, the area of ​​the aluminum electrodes in the straight pipe section, and the difference between the total solid-liquid contact area of ​​the aluminum system and the total solid-liquid contact area at the elbow. The unit also determines the physical corrosion amount based on the corrosion amount of each sub-electrode, the area of ​​each sub-electrode, and the total solid-liquid contact area at the corresponding elbow. Finally, the unit determines the corresponding total corrosion amount based on the total corrosion amount of the straight pipe section and the physical corrosion amount.

18. An online monitoring system for aluminum corrosion, characterized in that, Includes an online aluminum corrosion monitor as described in any one of claims 1 to 9, which is connected to the system water, and a host computer connected to the signal of the online aluminum corrosion monitor; The host computer includes: The current signal receiving module is used to receive the current feedback signal sent by the current signal acquisition unit of the aluminum corrosion online monitoring instrument, and to accumulate and calculate the electrical charge of the physical module bus electrode, the chemical module bus electrode, and each sub-electrode within a given period based on the current feedback signal. The corrosion trend judgment module is used to determine the aluminum corrosion trend based on the linear slope change of the cumulative charge value of the physical module bus electrode and the chemical module bus electrode within a set time period.

19. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the online aluminum corrosion monitoring method according to any one of claims 10 to 13.

20. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the online aluminum corrosion monitoring method according to any one of claims 10 to 13.

21. A computer program product, comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the online aluminum corrosion monitoring method according to any one of claims 10 to 13.

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