An online monitoring device for electrochemical protective layer and system method thereof

Abstract

The present invention discloses an online monitoring device for an electrochemical protective layer and a system method thereof, which are used for long-term online monitoring and detection of the electrochemical corrosion protective layer of large-area metal structural parts such as ships. The detection device (2) comprises a plurality of electrode coils (21), a power supply device (22) and a switch device (23), characterized in that the electrode coils (21) are arranged as a plurality of planar spiral coil structures and arranged in an array on a printed circuit board (24), the power supply device (22) comprises an AC power supply (221) and a micro-current power supply (222), and the switch device (23) switches the connection and disconnection of the AC power supply (221) and the micro-current power supply (222). The present invention realizes the simplification of long-term online monitoring and saves a large amount of power by means of a technical solution of online monitoring of micro-current and switching to specific parameter detection of high-frequency AC eddy current when abnormal.

Description

Technical Field

[0001] The present invention relates to the technical field of nondestructive testing, in particular to an eddy current electromagnetic nondestructive testing device, and in particular to an online monitoring device for an electrochemical protective layer and a system method thereof. Background Art

[0002] At present, most ships are made of metal hulls. Metal is very susceptible to corrosion in the marine environment, and corrosion is one of the biggest reasons affecting the life of ships. Corrosion leads to structural damage, which will seriously affect the performance and transportation safety of ships. In addition to electrochemical corrosion protection layer technology, the application of anti-corrosion detection and online monitoring technology is also very important for ship anti-corrosion measures.

[0003] like Figure 1 In general, the hull of a ship is composed of a metal layer and an electrochemical corrosion protection layer coated on the outside of the metal. During use, it is easily affected by the marine climate, especially the salt in the marine atmosphere, which can easily cause damage to the corrosion protection layer on the surface of the hull. It is very necessary to conduct online monitoring during use to grasp the specific conditions of the hull surface in real time.

[0004] In view of the above shortcomings, the present invention adopts the following technical solutions. Summary of the invention

[0005] The purpose of the present invention is to provide an online monitoring device for an electrochemical protective layer and a system method thereof. The disclosed technical solution is as follows:

[0006] A detection device for online monitoring of an electrochemical protective layer, used for long-term online monitoring and detection of the electrochemical corrosion protective layer of a large-area metal structural part such as a ship (1), wherein the detection device (2) can be wirelessly connected to a data processing center (3), the detection device (2) comprising a plurality of electrode coils (21), a power supply device (22) and a switch device (23), characterized in that the electrode coils (21) are arranged as a plurality of planar spiral coil structures, arranged in an array on a printed circuit board (24), the power supply device (22) comprising an alternating current power supply (221) and a micro-current power supply (222), and the switch device (23) switches the connection and disconnection of the alternating current power supply (221) and the micro-current power supply (222);

[0007] When the AC power supply (221) is disconnected and the micro-current power supply (222) is connected, the analog switch on the printed circuit board (24) disconnects the plurality of electrode coils (21) to form a capacitive non-destructive test; when the AC power supply (221) is connected and the micro-current power supply (222) is disconnected, the analog switch on the printed circuit board (24) connects the plurality of electrode coils (21) in series to form an eddy current non-destructive test.

[0008] Furthermore, the electrode coil (21) is configured as a plurality of pairs of first electrode coils (211) and second electrode coils (212) which are symmetrically arranged side by side and have opposite winding directions. The first analog switch (213), the analog switch (214) and the analog switch (215) switch the series connection or parallel connection between the electrode coils and are connected to the power supply device (22).

[0009] Furthermore, the two central end nodes of the first electrode coil (211) and the second electrode coil (212) are connected to the two ends of the power supply device (22) through a printed circuit board (24), and the two end nodes close to the periphery of the planar spiral coil type first electrode coil (211) and the second electrode coil (212) are connected to the two ends of the first analog switch (213) of the printed circuit board (24).

[0010] Furthermore, each pair of the electrode coils (21) is connected via a second analog switch (214). When the AC power supply (221) is connected and the micro-current power supply (222) is disconnected to form an eddy current non-destructive testing, the second analog switch (214) connects all the electrode coils (21) in series to form an electromagnetic non-destructive testing (e.g., eddy current testing, etc.) coil.

[0011] The printed circuit board (24) is made of a flexible material and has a large-area PCB circuit board that conforms to the detection surface. The electrode coil (21) is engraved on the detection surface of the flexible printed circuit board (24).

[0012] The present invention also discloses a detection method for online monitoring of an electrochemical protective layer, which is characterized by using the detection device described in any one of the above claims, and controlling the disconnection and connection of a switch device and an analog switch device through a controller, and the specific steps are as follows:

[0013] a. Micro-current large-area capacitive monitoring: In the normal online monitoring state, the switch device and the analog switch device on the printed circuit board switch the micro-current power supply (222) to connect all electrode coils in parallel, and each electrode coil is kept in the micro-current online monitoring state;

[0014] b. Abnormal alarm: When the detection capacitance value of the micro-current online monitoring is abnormal, an alarm is given and the electromagnetic non-destructive testing (such as eddy current testing and other electromagnetic non-destructive testing) of step c is entered;

[0015] c. Electromagnetic nondestructive testing (such as eddy current testing) detection detailed parameters: The switch device and the simulated switch device on the printed circuit board switch the AC power supply (222) to connect all the electrode coils in series, and each electrode coil enters the electromagnetic nondestructive testing (such as eddy current testing) detection detailed parameter state, focusing on the thickness parameters of the electrochemical corrosion protection layer of the electromagnetic nondestructive testing (such as eddy current testing) detection.

[0016] The controller controls the disconnection and connection of the switch device and the analog switch device and also includes manually selecting and switching between two different detection modes: capacitive detection and eddy current detection.

[0017] The present invention also discloses a detection system for online monitoring of an electrochemical protective layer, characterized in that the detection system (4) comprises a power supply module (41), a control center (42), a data transmission and storage module (43), a micro-current large-area capacitive monitoring module (44), an electromagnetic non-destructive testing (e.g., electromagnetic non-destructive testing such as eddy current testing) detection module (45), and an abnormality warning module (46), wherein

[0018] The control center (42) includes a power control module (421) and an analog switch module (422) for controlling power switch switching and module switch switching respectively; in a normal online monitoring state, the power control module (421) and the analog switch module (422) switch the analog switch device on the printed circuit board to switch the micro-current power supply to connect all electrode coils in parallel, and each electrode coil is kept in a micro-current online monitoring state; when an abnormal alarm module (46) generates an abnormal alarm, the power control module (421) and the analog switch module (422) switch the analog switch device on the printed circuit board to switch the AC power supply to connect all electrode coils in series, and each electrode coil enters an electromagnetic non-destructive testing (such as eddy current testing and other electromagnetic non-destructive testing) detailed parameter detection state, focusing on the thickness parameter of the electrochemical corrosion protection layer of the electromagnetic non-destructive testing (such as eddy current testing and other electromagnetic non-destructive testing).

[0019] Furthermore, the power control module (421) and the analog switch module (422) also include two different detection modes, namely, capacitive detection and eddy current detection, which can be switched by manual operation.

[0020] According to the above technical scheme, the present invention has the following beneficial effects:

[0021] 1. The present invention realizes the simplification of long-term online monitoring through the online monitoring of large-area capacitance of tiny micro-current power supply and the technical scheme of switching to the specific parameter detection of high-frequency AC eddy current when abnormal, which not only realizes large-area monitoring and the detection of detailed parameters of specific abnormal positions, but also saves a lot of power;

[0022] Second, the electrode of the present invention is a planar spiral coil structure, which not only increases the monitoring and detection area, but also achieves a non-destructive detection effect, and will not cause any damage to the electrochemical protective layer of the detection surface; the coil type electromagnetic non-destructive testing (as we all know, electromagnetic non-destructive testing includes eddy current testing, magnetic flux leakage testing, electromagnetic ultrasonic testing, electromagnetic acoustic vibration testing, etc.) The coil can be made into a planar type, and even more so, it can be a planar spiral structure. The detection electrode can be set as a plane, rather than a probe type electrode detection, which can reduce the damage to the electrochemical corrosion protection layer.

[0023] 3. The planar spiral coil electrode of the present invention is engraved on a flexible PCB circuit board device with analog switch control, so that the detection device can conform to the detection surface for large-area detection, which is very suitable for wireless monitoring and cloud detection of large ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the use status of the best embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the structure of a detection device according to a preferred embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure of a detection device according to a preferred embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the structure of a detection device according to a preferred embodiment of the present invention;

[0028] Figure 5 A schematic diagram of a method flow chart of a preferred embodiment of the present invention;

[0029] Figure 6 The figure is a schematic diagram of the system method flow of the best embodiment of the present invention. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0031] like Figures 1 to 4 As shown in, a detection device for online monitoring of an electrochemical protective layer is used for long-term online monitoring and detection of an electrochemical corrosion protective layer of a large-area metal structural part such as a ship 1. The detection device 2 can be connected to a data processing center 3 by wireless. The detection device 2 includes a plurality of electrode coils 21, a power supply device 22 and a switch device 23. It is characterized in that the electrode coil 21 is configured as a plurality of planar spiral coil structures, which are arranged in an array on a printed circuit board 24. The power supply device 22 includes an AC power supply 221 and a micro-current power supply 222. The switch device 23 switches the connection and disconnection of the AC power supply 221 and the micro-current power supply 222.

[0032] When the AC power supply 221 is disconnected and the micro-current power supply 222 is connected, the analog switch on the printed circuit board (24) disconnects the plurality of electrode coils (21) to form a capacitive non-destructive test; when the AC power supply 221 is connected and the micro-current power supply 222 is disconnected, the analog switch on the printed circuit board 24 connects the plurality of electrode coils 21 in series to form an eddy current non-destructive test.

[0033] Furthermore, the electrode coil 21 is configured as a plurality of pairs of first electrode coils 211 and second electrode coils 212 which are symmetrically arranged side by side with opposite winding directions. The first analog switch 213, the analog switch 214 and the analog switch 215 switch the series or parallel connection between the electrode coils and are connected to the power supply device 22.

[0034] Furthermore, the two central end nodes of the first electrode coil 211 and the second electrode coil 212 are connected to the two ends of the power supply device 22 through the printed circuit board 24, and the two end nodes close to the periphery of the planar spiral coil type first electrode coil 211 and the second electrode coil 212 are connected to the two ends of the first analog switch 213 of the printed circuit board 24.

[0035] Furthermore, each pair of the electrode coils 21 is connected via a second analog switch 214. When the AC power supply 221 is connected and the micro-current power supply 222 is disconnected to form eddy current non-destructive testing, the second analog switch 214 connects all the electrode coils 21 in series to form an electromagnetic non-destructive testing (e.g., eddy current testing, etc.) coil.

[0036] The printed circuit board 24 is made of flexible material and has a large PCB circuit board that conforms to the detection surface. The electrode coil 21 is engraved on the detection surface of the flexible printed circuit board 24 .

[0037] like Figure 5 As shown in the flowchart in, the present invention also discloses a detection method for online monitoring of an electrochemical protective layer, characterized in that the detection device described in any of the above claims is used, and the disconnection and connection of the switch device and the analog switch device are controlled by a controller, and the specific steps are as follows:

[0038] a. Micro-current large-area capacitive monitoring: Under normal online monitoring status, the switch device and the analog switch device on the printed circuit board switch the micro-current power supply to connect all electrode coils in parallel, and each electrode coil is kept in the micro-current online monitoring status;

[0039] b. Abnormal alarm: When the detection capacitance value of the micro-current online monitoring is abnormal, an alarm is given and the electromagnetic non-destructive testing (such as eddy current testing and other electromagnetic non-destructive testing) of step c is entered;

[0040] c. Detailed parameters of electromagnetic nondestructive testing (such as eddy current testing and other electromagnetic nondestructive testing): The switch device and the simulated switch device on the printed circuit board switch the AC power supply 222 to connect all the electrode coils in series, and each electrode coil enters the state of detailed parameters of electromagnetic nondestructive testing (such as eddy current testing and other electromagnetic nondestructive testing), with an emphasis on the thickness parameters of the electrochemical corrosion protection layer of electromagnetic nondestructive testing (such as eddy current testing and other electromagnetic nondestructive testing).

[0041] The controller controls the disconnection and connection of the switch device and the analog switch device and also includes selecting and switching two different detection modes, namely, capacitive detection and eddy current detection, through manual operation.

[0042] And, if Figure 6 As shown, the present invention also discloses an online monitoring detection system for an electrochemical protective layer, wherein the detection system 4 includes a power supply module 41, a control center 42, a data transmission and storage module 43, a micro-current large-area capacitive monitoring module 44, an electromagnetic non-destructive testing (e.g., electromagnetic non-destructive testing such as eddy current testing) detection module 45, and an abnormal warning module 46, wherein

[0043] The control center 42 includes a power control module 421 and an analog switch module 422, which are respectively used to control the switching of the power switch and the module switch; in the normal online monitoring state, the power control module 421 and the analog switch module 422 switch the analog switch device on the printed circuit board to switch the micro-current power supply to connect all the electrode coils in parallel, and each electrode coil remains in the micro-current online monitoring state; when the abnormal alarm module 46 has an abnormal alarm, the power control module 421 and the analog switch module 422 switch the analog switch device on the printed circuit board to switch the AC power supply to connect all the electrode coils in series, and each electrode coil enters the electromagnetic non-destructive testing (such as eddy current testing and other electromagnetic non-destructive testing) detection detailed parameter state, focusing on the thickness parameters of the electrochemical corrosion protection layer of the electromagnetic non-destructive testing (such as eddy current testing and other electromagnetic non-destructive testing).

[0044] Furthermore, the power control module 421 and the analog switch module 422 also include two different detection modes, namely, capacitive detection and eddy current detection, which can be switched by manual operation.

[0045] The above is one embodiment of the present invention. In addition, it should be noted that any equivalent or simple changes made based on the structure, features and principles described in this patent concept are included in the protection scope of this patent.

Claims

1. A detection device for online monitoring of an electrochemical protective layer, comprising a plurality of electrode coils (21), a power supply device (22) and a switch device (23), characterized in that The electrode coil (21) is configured as a plurality of planar spiral coil structures, which are arranged in an array on a printed circuit board (24); the power supply device (22) comprises an AC power supply (221) and a micro-current power supply (222); and the switch device (23) switches the connection and disconnection of the AC power supply (221) and the micro-current power supply (222); When the AC power source (221) is disconnected and the micro-current power source (222) is connected, the analog switch on the printed circuit board (24) disconnects the plurality of electrode coils (21) to form a capacitive non-destructive test; when the AC power source (221) is connected and the micro-current power source (222) is disconnected, the analog switch on the printed circuit board (24) connects the plurality of electrode coils (21) in series to form an eddy current non-destructive test; The electrode coil (21) is configured as a plurality of pairs of first electrode coils (211) and second electrode coils (212) which are symmetrically arranged side by side and have opposite winding directions. The first analog switch (213), the analog switch (214) and the analog switch (215) switch the series connection or parallel connection between the electrode coils and are connected to the power supply device (22).

2. The detection device for online monitoring of an electrochemical protective layer according to claim 1, characterized in that The two central end nodes of the first electrode coil (211) and the second electrode coil (212) are connected to the two ends of the power supply device (22) through a printed circuit board (24), and the two end nodes close to the periphery of the planar spiral coil first electrode coil (211) and the second electrode coil (212) are connected to the two ends of the first analog switch (213) of the printed circuit board (24).

3. The detection device for online monitoring of an electrochemical protective layer according to claim 2 is characterized in that Each pair of the electrode coils (21) is connected via a second analog switch (214); when an alternating current power source (221) is connected and a micro-current power source (222) is disconnected to form an eddy current non-destructive testing, the second analog switch (214) connects all the electrode coils (21) in series to form an electromagnetic non-destructive testing coil.

4. A detection device for online monitoring of an electrochemical protective layer according to claim 1, 2 or 3, characterized in that The printed circuit board (24) is configured to be a large-area PCB circuit board made of flexible material and having a certain conformable detection surface.

5. The detection device for online monitoring of an electrochemical protective layer according to claim 4, characterized in that The electrode coil (21) is engraved on the detection surface of the flexible printed circuit board (24).

6. A detection method for online monitoring of an electrochemical protective layer, characterized in that Using the detection device described in any of the above claims, the controller controls the disconnection and connection of the switch device and the simulated switch device, and the specific steps are as follows: a. Micro-current large-area capacitive monitoring: Under normal online monitoring status, the switch device and the analog switch device on the printed circuit board switch the micro-current power supply to connect all electrode coils in parallel, and each electrode coil is kept in the micro-current online monitoring status; b. Abnormal alarm: When the detection capacitance value of the micro-current online monitoring is abnormal, an alarm will be given and the electromagnetic non-destructive testing in step c will be started; c. Detailed parameters of electromagnetic nondestructive testing: The switch device and the simulated switch device on the printed circuit board switch the AC power supply to connect all electrode coils in series, and each electrode coil enters the detailed parameters state of electromagnetic nondestructive testing, with the focus on the thickness parameters of the electrochemical corrosion protection layer of electromagnetic nondestructive testing.

7. The method for online monitoring of an electrochemical protective layer according to claim 6, characterized in that The controller controls the disconnection and connection of the switch device and the simulated switch device and also includes selecting and switching two different detection modes, namely, capacitive detection and eddy current detection, through manual operation.

8. A detection system for online monitoring of an electrochemical protective layer, using the detection device for online monitoring of an electrochemical protective layer as claimed in claim 1, characterized in that The detection system (4) comprises a power module (41), a control center (42), a data transmission and storage module (43), a micro-current large-area capacitive monitoring module (44), an electromagnetic non-destructive testing module (45), and an abnormal warning module (46), wherein the control center (42) comprises a power control module (421) and an analog switch module (422) for controlling the switching of the power switch and the switching of the module switch respectively; in a normal online monitoring state, the power control module (421) and the analog switch module (422) switch the analog switch device on the printed circuit board to switch the micro-current power supply to connect all the electrode coils in parallel, and each electrode coil remains in a micro-current online monitoring state; when the abnormal warning module (46) generates an abnormal warning, the power control module (421) and the analog switch module (422) switch the analog switch device on the printed circuit board to switch the AC power supply to connect all the electrode coils in series, and each electrode coil enters an electromagnetic non-destructive testing detailed parameter state, with an emphasis on the thickness parameter of the electrochemical corrosion protection layer of the electromagnetic non-destructive testing.

9. The detection system for online monitoring of an electrochemical protective layer according to claim 8, characterized in that The power control module (421) and the analog switch module (422) also include two different detection modes, namely, capacitive detection and eddy current detection, which can be switched by manual operation.

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