CN111077064B - Self-part early warning protection monitoring device used in conductive solution - Google Patents
Self-part early warning protection monitoring device used in conductive solution Download PDFInfo
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- CN111077064B CN111077064B CN202010000689.3A CN202010000689A CN111077064B CN 111077064 B CN111077064 B CN 111077064B CN 202010000689 A CN202010000689 A CN 202010000689A CN 111077064 B CN111077064 B CN 111077064B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
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Abstract
The invention discloses a part self-warning protection monitoring device used in a conductive solution. The device comprises a protection unit and a monitoring unit, wherein the protection unit is positioned in a conductive solution and comprises a non-insulating base layer and a non-insulating protection film layer which are sequentially and outwards arranged from the part to be protected of the part and fixedly connected; the monitoring unit comprises a micro-current sensor and a counter electrode, one end of the micro-current sensor is connected with the counter electrode through a lead, the other end of the micro-current sensor is connected with the non-insulating substrate layer, and the counter electrode is placed in a conductive solution; the non-insulation protective film layer, the non-insulation substrate layer, the micro-current sensor, the counter electrode and the conductive solution form a current loop, and the micro-current sensor can monitor the current magnitude and direction in the loop. The beneficial effects of the invention include: early warning can be provided before the film layer fails.
Description
Technical Field
The invention relates to the field of coating failure early warning, in particular to a self-part early warning protection monitoring device used in a conductive solution.
Background
Failure monitoring for monitoring coatings in conductive solutions is still in the blank phase, when a coating is damaged or fails, and can only be known after the coating is damaged or fails. And damage or failure of the coating may result in equipment failure and shutdown of the plant.
Disclosure of Invention
In view of the deficiencies in the prior art, it is an object of the present invention to address one or more of the problems in the prior art as set forth above. For example, it is an object of the present invention to provide a self-component-alert-protection monitoring device for use in conductive solutions to provide an alert of failure of a coating of a component in the conductive solution.
The invention provides a self-part early warning protection monitoring device used in a conductive solution. The device can comprise a protection unit and a monitoring unit, wherein the protection unit is positioned in a conductive solution, the protection unit can comprise a non-insulating base layer and a non-insulating protection film layer which are sequentially arranged outwards from a part to be protected of a part and fixedly connected with the part, the protection unit is coated on the outer surface of the part, and the self-corrosion potential of the non-insulating protection film layer is higher than that of the non-insulating base layer; the monitoring unit can comprise a micro-current sensor and a counter electrode, one end of the micro-current sensor is connected with the counter electrode through a lead, the other end of the micro-current sensor is connected with the non-insulating substrate layer, the counter electrode is placed in a conductive solution, and the self-corrosion potential of the counter electrode is positioned between the non-insulating substrate layer and the non-insulating protective film layer; the non-insulation protective film layer, the non-insulation substrate layer, the micro-current sensor, the counter electrode and the conductive solution form a current loop, and the micro-current sensor can monitor the current magnitude and direction in the loop.
In an exemplary embodiment of the self-component pre-warning protection monitoring device for use in conductive solutions of the present invention, the monitoring unit may further comprise a functional component allowing unidirectional current to pass, the functional component being capable of blocking current in the circuit.
In one exemplary embodiment of the self-part pre-alarm protection monitoring device for use in conductive solutions of the present invention, the functional component may comprise a diode.
In an exemplary embodiment of the self-part early warning protection monitoring device used in the conductive solution, the surfaces of the wires are subjected to insulation treatment, and the contact points of the wires, the micro-current sensor, the non-insulation substrate layer and the counter electrode are subjected to sealing insulation treatment.
In one exemplary embodiment of the self-part pre-alarm protection monitoring device for use in conductive solutions of the present invention, the counter electrode may comprise a fixed microelectrode.
Compared with the prior art, the beneficial effects of the invention can include: the early warning can be provided before the film layer fails, the economic loss caused by the fact that parts are damaged without warning signs is avoided, and the monitoring unit is simple in structure and low in cost.
Drawings
The above and other objects and features of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:
FIG. 1 shows a schematic structural diagram of a self-contained parts early warning protection monitoring device for use in conductive solutions in an exemplary embodiment of the invention;
fig. 2 shows another schematic structural diagram of a self-contained parts early warning protection monitoring device for use in conductive solutions in an exemplary embodiment of the invention.
Description of the main reference numerals:
1. the sensor comprises a non-insulation protective film layer, a non-insulation substrate layer, a micro-current sensor, a counter electrode, a conductive solution, a diode and a conductive solution, wherein the non-insulation protective film layer 2 is arranged on the non-insulation substrate layer 3.
Detailed Description
Hereinafter, the self-component early warning protection monitoring device for use in a conductive solution of the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments.
The invention provides a self-part early warning protection monitoring device used in a conductive solution.
In an exemplary embodiment of the invention, the apparatus comprises a guard unit and a monitoring unit.
Specifically, as shown in fig. 1, the protection unit is located in a conductive solution, and the protection unit includes a non-insulating base layer 2 and a non-insulating protection film layer 1 which are sequentially and outwardly disposed from a part to be protected of a component and fixedly connected.
In this embodiment, the protection unit may cover an outer surface of the part.
In this embodiment, the self-etching potential V1 of the non-insulating base layer is different from the self-etching potential V2 of the non-insulating protective film layer, and V1 < V2.
Specifically, as shown in fig. 1, the monitoring unit may include a micro-current sensor 3 and a counter electrode 4. One end of the micro-current sensor 3 is connected with the counter electrode 4 through a lead, the other end of the micro-current sensor is connected with the non-insulating substrate layer 2, the counter electrode 4 is placed in the conductive solution 5, the non-insulating protective film layer 1, the non-insulating substrate layer 2, the micro-current sensor 3, the counter electrode 4 and the conductive solution 5 form a current loop, and the micro-current sensor can monitor the current magnitude and direction in the loop.
In the present embodiment, the self-etching potential of the counter electrode is V3, and V1 < V3 < V2.
In this embodiment, the surface of the conducting wire is insulated, the contact points of the conducting wire with the micro-current sensor, the non-insulating substrate layer and the counter electrode are sealed and insulated, and the counter electrode includes a fixed microelectrode.
In this embodiment, when the non-insulating protective film layer is not damaged, since V3 < V2, the current loop in the device is: the non-insulating protective film layer 1 → the non-insulating base layer 2 → the micro-current sensor 3 → the counter electrode 4 → the conductive solution 5 → the non-insulating protective film layer 1. The direction of the current monitored by the micro-current sensor is the current direction of the above-mentioned current loop (non-insulating protective film layer 1 → non-insulating substrate layer 2 → micro-current sensor 3 → counter electrode 4 → conductive solution 5 → non-insulating protective film layer 1).
When the non-insulating protective film layer is damaged, the current loop in the device is as follows because V1 < V3: the counter electrode 4 → the micro-current sensor 3 → the non-insulating base layer 2 → the conductive solution 5 → the counter electrode 4. The direction of the current monitored by the micro-current sensor is the direction of the current in the current loop (counter electrode 4 → micro-current sensor 3 → non-insulating substrate layer 2 → conductive solution 5 → counter electrode 4).
In this embodiment, after the non-insulating protective film layer is damaged, since the magnitude and direction of the current in the path are changed, it can be determined that the non-insulating protective film layer has failed, and due to the existence of the non-insulating base layer, there is a time for taking measures in time after an early warning, so that economic loss caused by no predictive loss of parts can be avoided.
In another exemplary embodiment of the invention, the apparatus comprises a guard unit and a monitoring unit.
Specifically, as shown in fig. 2, the protection unit is located in a conductive solution, and the protection unit includes a non-insulating base layer 2 and a non-insulating protection film layer 1 which are sequentially and outwardly disposed from a part to be protected of a component and fixedly connected.
In this embodiment, the protection unit may be coated on an outer surface of the part.
In this embodiment, the self-etching potential V1 of the non-insulating base layer is different from the self-etching potential V2 of the non-insulating protective film layer, and V1 < V2.
Specifically, as shown in fig. 2, the monitoring unit may include a micro-current sensor 3, a counter electrode 4, and functional components that allow a unidirectional current to pass. The functional component may comprise a diode 6. One end of the micro-current sensor 3 is connected with the counter electrode 4 through a lead, the other end of the micro-current sensor is connected with the non-insulating substrate layer 2, the counter electrode 4 is placed in a conductive solution 5, and the diode 6 can be positioned between the counter electrode 4 and the micro-current sensor 3.
When the non-insulating protective film layer is not broken, a current loop (non-insulating protective film layer 1 → non-insulating base layer 2 → micro-current sensor 3 → counter electrode 4 → conductive solution 5 → non-insulating protective film layer) is blocked due to the self-nature of the diode, and the micro-current sensor 3 does not monitor any current.
In this embodiment, since the diode blocks the electrochemical current in the circuit when the non-insulating protective film layer is not damaged, galvanic corrosion of the counter electrode/the non-insulating protective film layer can be blocked, thereby improving the service life of the counter electrode of the present invention.
When the non-insulating protective film layer is damaged, a current loop (the counter electrode 4 → the micro current sensor 3 → the non-insulating base layer 2 → the conductive solution 5 → the counter electrode 4) is not interrupted due to the property of the diode itself, and a current direction monitored by the micro current sensor is the current direction of the above current loop (the counter electrode 4 → the micro current sensor 3 → the non-insulating base layer 2 → the conductive solution 5 → the counter electrode 4).
In the embodiment, when the non-insulating protective film layer is damaged, current appears in the path, so that the fact that the non-insulating protective film layer fails can be judged, and due to the existence of the non-insulating base body layer, the time for taking measures in time after early warning exists, and economic loss caused by the fact that parts are not damaged in advance can be avoided.
In a further exemplary embodiment of the present invention, on the basis of the first or second exemplary embodiment of the present invention, a plurality of non-insulating transition protection layers may be further provided between the non-insulating protection film layer and the non-insulating base layer.
In order that the above-described exemplary embodiments of the invention may be better understood, further description thereof with reference to specific examples is provided below.
Example 1
The standard electrode potential is a standard hydrogen atom as a reference electrode, namely the standard electrode potential value of hydrogen is 0, and compared with a hydrogen standard electrode, the higher potential is positive, and the lower potential is negative. Standard electrode potential H of e.g. hydrogen2/H+0.000V, zinc standard electrode potential Zn/Zn2+is-0.762V, standard electrode potential of copper Cu/Cu2+Is +0.342V, standard electrode potential of Ag/Ag+Is + 0.80V. EZn/Zn 2+＜ECu/Cu 2+＜EAg/Ag +。
The conductive solution is a copper sulfate solution with activity of 1. The protective film layer is a pure silver coating, the counter electrode is pure copper, and the substrate layer is a pure zinc layer.
When the pure silver protective film is not damaged, because of ECu/Cu 2+＜EAg/Ag +Meanwhile, the conductive solution is a copper salt solution with activity of 1, and no current exists in the current loop;
when the pure silver protective film layer is damaged, due to EZn/Zn 2+＜ECu/Cu 2+Due to the galvanic effect, a current is generated in the circuit in the direction of the pure copper counter electrode 4 → the micro-current sensor 3 → the pure zinc warning coating 2 → the conductive solution 5 → the pure copper counter electrode 4After being monitored by the micro-current sensor, the current sends out an alarm signal, the micro-current is related to the exposure area of the early warning coating, and the larger the exposure area is, the larger the current is, so that the information of the damage condition of the protective film layer can be obtained to a certain extent.
Example 2
The standard electrode potential is a standard hydrogen atom as a reference electrode, namely the standard electrode potential value of hydrogen is 0, and compared with a hydrogen standard electrode, the higher potential is positive, and the lower potential is negative. Standard electrode potential H of e.g. hydrogen2/H+0.000V, zinc standard electrode potential Zn/Zn2+is-0.762V, standard electrode potential of copper Cu/Cu2+Is +0.342V, standard electrode potential Ag/Ag of silver+Is + 0.80V. EZn/Zn 2+＜ECu/Cu 2+＜EAg/Ag +。
The conductive solution is a dilute sulfuric acid solution with activity of 1, the protective film layer is a pure silver coating, the counter electrode is pure copper, and the substrate layer is a pure zinc layer.
When the pure silver protective film is not damaged, because of ECu/Cu 2+＜EAg/Ag +，EH2/H +＜ECu/Cu 2+No current is present in the circuit.
When the pure silver protective film layer is damaged, because of EZn/Zn 2+＜ECu/Cu 2+Due to the primary battery effect, current in the direction of the pure copper counter electrode 4 → the micro-current sensor 3 → the pure zinc early warning coating 2 → the conductive solution 5 → the pure copper counter electrode 4 is generated in a loop, the current is monitored by the micro-current sensor and then sends out an alarm signal, the micro-current is related to the exposure area of the early warning coating, and the larger the exposure area is, the larger the current is, so that the information of the damage condition of the protective film layer can be obtained to a certain extent.
In summary, the self-component early warning protection monitoring device for use in conductive solution of the present invention has the following advantages:
(1) and monitoring the current between the early warning monitoring layer and the counter electrode by utilizing the electrochemical current generated by the galvanic cell effect caused by different self-corrosion potentials of different materials in the conductive solution. When the protective film is not damaged, electrons flow from the counter electrode to the protective film because the self-corrosion potential of the counter electrode is lower than that of the protective film, and the counter electrode is accelerated to corrode (the corrosion process of the primary battery can be blocked by a diode). So that to a certain extent also a coating failure can be known.
(2) The device has the characteristics of small volume, low cost, high precision and the like, can provide early warning before the device fails, avoids economic loss caused by no predictive loss of parts, and is very suitable for large-scale application.
Although the present invention has been described above in connection with exemplary embodiments, it will be apparent to those skilled in the art that various modifications and changes may be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A self-part early warning protection monitoring device used in a conductive solution is characterized by comprising a protection unit and a monitoring unit, wherein the protection unit is positioned in the conductive solution,
the protective unit comprises a non-insulating base body layer and a non-insulating protective film layer which are sequentially arranged outwards from the part to be protected of the part and fixedly connected, the protective unit is coated on the outer surface of the part, and the self-corrosion potential of the non-insulating protective film layer is higher than that of the non-insulating base body layer;
the monitoring unit comprises a micro-current sensor and a counter electrode, one end of the micro-current sensor is connected with the counter electrode through a lead, the other end of the micro-current sensor is connected with the non-insulating substrate layer, the counter electrode is placed in a conductive solution, and the self-corrosion potential of the counter electrode is positioned between the non-insulating substrate layer and the non-insulating protective film layer;
the non-insulation protective film layer, the non-insulation substrate layer, the micro-current sensor, the counter electrode and the conductive solution form a current loop, and the micro-current sensor can monitor the current magnitude and direction in the loop.
2. The self-part pre-warning protection monitoring device for use in conductive solution as claimed in claim 1, wherein the monitoring unit further comprises a functional component allowing unidirectional current flow, the functional component being capable of blocking current flow in the loop.
3. The self-part pre-alarm protection monitoring device for use in conducting solutions of claim 2 wherein the functional component comprises a diode.
4. The self-component early warning protection monitoring device used in conductive solution according to claim 1, wherein the surface of the conducting wire is subjected to insulation treatment, and the contact points of the conducting wire, the micro-current sensor, the non-insulation substrate layer and the counter electrode are subjected to sealing insulation treatment.
5. The self-part pre-alarm protection monitoring device for use in conducting solutions of claim 1, wherein the counter electrode comprises a fixed microelectrode.
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