CN214585052U - Coating sensor probe device - Google Patents

Abstract

The utility model belongs to the technical field of organism structure detects, a coating sensor probe unit is disclosed, include: the probe comprises a probe shell, a coating, a probe bracket and a cable; wherein, the probe shell extends two lugs outwards and is provided with holes for being fixed with the machine body; the probe shell middle part is square outside and round inside, and a cylindrical cavity is formed inside, and a protrusion is arranged on the bottom surface inside the cylindrical cavity and used for positioning the probe support, the probe is fixed on the probe support, the coating is coated on the outer surface of the probe shell, one end of the probe is connected with a cable, the other end of the probe penetrates through the probe shell to be in contact with the coating, the aging process of the protective performance of the aircraft hidden and key structure part local coating is monitored, and the corrosion condition of the aircraft structure is forecasted in time.

Description

Coating sensor probe device

Technical Field

The utility model belongs to the technical field of the organism structure detects, especially, relate to a coating sensor probe unit.

Background

When the airplane is used in coastal areas, the airplane is subjected to the action of extreme severe marine environments such as high and low temperature, damp and hot, salt fog, illumination, chemical pollution, rain and snow, fog days, seawater sputtering and the like, so that the corrosion of the structure, the system, the electronic equipment and accessories of the airplane is easily caused, the structural integrity and the functionality of the airplane are seriously influenced, and the airplane needs to be subjected to corrosion monitoring and maintenance in order to slow down and control the corrosion.

The method is mainly characterized in that premature and delayed maintenance of maintenance engineering can occur, the premature maintenance can cause huge waste of manpower, material resources and time cost, meanwhile, the service cycle of equipment and facilities is reduced, the delayed maintenance can cause further deterioration of corrosion conditions, and the service life, safety and reliability of the airplane can be further reduced if the maintenance is not performed in time. Therefore, a corrosion condition-based maintenance strategy is introduced, the successful implementation of the strategy mainly depends on a corrosion real-time online monitoring sensor probe with advanced technology and reliable performance, reference is provided for condition-based maintenance, the optimal maintenance time and maintenance scheme are determined, and the defects of early maintenance and delayed maintenance are overcome.

In recent years, the corrosion monitoring technology is more and more important along with the increase of the maintenance cost of the airplane, a great deal of research is carried out on a sensing system of the coating corrosion monitoring technology in European and American countries, a novel coating corrosion on-line monitoring sensing probe is successfully developed, and the engineering application on the airplane is realized; a large number of principles and verifiable researches are carried out on corrosion sensors based on acoustic emission and optical fiber principles in China, and the technologies are mainly used for monitoring corrosion based on stress or strain, so that early corrosion monitoring of an airplane structure cannot be realized.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model provides a coating sensor probe unit, based on the corrosion monitoring technology principle of electrochemistry impedance, carry out on-line monitoring through the coating state of monitoring aircraft structure, the monitoring aircraft is hidden and the ageing process of key structure position local coating protective properties, in time forecasts the corrosion conditions of aircraft structure, for the maintenance of the condition provides the reference, confirms best maintenance duration and maintenance scheme from this.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize.

A coated sensor probe apparatus, the apparatus comprising: the probe comprises a probe shell, a coating, a probe bracket and a cable;

wherein, the probe shell extends two lugs outwards and is provided with holes for being fixed with the machine body; the probe shell is characterized in that the middle of the probe shell is square outside and round inside, a cylindrical cavity is formed inside, a protrusion is arranged on the bottom surface inside the cylindrical cavity and used for positioning the probe support, the probe is fixed on the probe support, the coating is coated on the outer surface of the probe shell, one end of the probe is connected with the cable, and the other end of the probe penetrates through the probe shell and contacts with the coating.

The utility model discloses technical scheme's characteristics and further improvement do:

(1) the material of the probe shell is the same as that of the structure of the body monitoring part.

(2) The probe is provided with two through holes, the aperture of the two through holes is larger than the diameter of the probe, and the probe penetrates through the two through holes to be in contact with a coating coated on the outer surface of the probe shell.

(3) And colloid is filled between the two through holes of the probe shell and the probe, so that the probe is prevented from contacting the probe shell.

(4) The probe is made of red copper material, and the two probes are inserted into the through hole of the probe shell to form a double-point electrode for sensing the change of the amplitude voltage and the phase voltage of the coating.

(5) The probe support is made of plastic materials and used for fixing and positioning the probe and preventing the probe body from contacting with the probe shell;

the probe support is of a cross connection structure with a transverse part and two vertical parts, and two probe through holes are formed in the transverse part and used for the probe to penetrate through.

(6) The device further comprises a screw for fixing the shielded wire of the cable.

(7) The cylindrical cavity is filled with colloid, and the colloid is epoxy resin glue.

The utility model discloses coating sensor probe accessible electrochemistry electronic components simulation is the circuit mode, can test out electrochemical characteristics such as resistance of anticorrosive coating according to the electrochemistry principle to this sign anticorrosive coating's performance. The utility model discloses main advantage as follows: (1) when the probe is used for monitoring, the probe does not need to be in direct contact with the metal structure and the coating of the machine body, but adopts the same material as the metal structure and the surface coating of the machine body, and indirectly reflects the aging and failure conditions of the coating on the surface of the machine body. (2) No electrolyte solution is required for probe monitoring. (3) The probe electrode is positioned at the interface of the coating and the metal body, and can accurately monitor the performance change at the interface of the coating and the metal body, thereby accurately evaluating the corrosion failure condition of the coating. (4) The probe has an electromagnetic shielding function.

Drawings

Fig. 1 is a schematic bottom structure diagram of a probe apparatus of a coating sensor according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a coated sensor probe apparatus according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a probe casing according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a probe according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a probe holder according to an embodiment of the present invention;

fig. 6 is a schematic diagram of effective verification results of a corrosion monitoring corrosion inhibitor of a coating sensor probe device according to an embodiment of the present invention;

wherein, the probe comprises 1-a probe shell, 2-a coating, 3-a probe, 4-a probe bracket, 5-a cable, 6-a screw and 7-a colloid.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the utility model provides a coating sensor probe unit, as shown in fig. 1 and fig. 2, by probe casing, coating system, probe support, cable, screw and colloid constitution.

The material of the shell of the probe is consistent with the structural material of the monitoring part, and is generally a metal material; as shown in fig. 3, two tabs extend out of the probe shell and are provided with holes for being fixed with the machine body; the middle part of the probe shell is square outside and round inside, a cylindrical cavity is formed inside, and the probe, the probe bracket, the cable, the screw and the colloid are contained and installed inside; a small bulge is arranged in the cavity, so that the probe support is convenient to position;

the coating system is consistent with the structural coating system of the monitoring part, is sprayed on the outer surface of the shell of the probe and generally consists of primer for two times and finish for one time;

the probes are made of red copper materials, and as shown in fig. 4, the two probes are inserted into the holes of the shell of the probe to form double-point electrodes for sensing the changes of amplitude voltage and phase voltage of the coating system; the probe is not in contact with the probe shell;

as shown in fig. 5, the probe support is made of plastic and used for fixing and positioning the probe and preventing the probe from contacting with the probe shell;

the cable is connected with the probe and is used for feeding back two voltage signals of the coating sensed by the probe to the converter device and finally displaying the change of the impedance value of the coating;

the screw is used for fixing a shielding wire of the cable, so that the probe has an electromagnetic shielding function;

the colloid is epoxy resin glue and is used for filling the inner cavity of the shell, sealing holes, isolating and fixing cables.

The basic action principle of the coating monitoring sensing probe is as follows: the coating corrosion monitoring probe adopts a unique design concept, based on the electrochemical alternating-current impedance basic principle, the coating is coated on the surface of the monitoring probe, excitation signals with different frequencies are applied to an anti-corrosion layer system, when the surface coating is corroded and damaged, a probe circuit is conducted by a thin liquid film gathered on the surface layer, and the resistance change can be indirectly tested by charge transfer, so that the monitoring purpose is achieved.

The utility model discloses a coating sensor probe device that technical scheme designed carries out corrosion inhibitor validity verification, and dura mater corrosion inhibitor and mantle corrosion inhibitor are chooseed for use respectively to the corrosion inhibitor, and figure 6 is corrosion on-line monitoring probe corrosion inhibitor verification example. The effective period of the hard film coating corrosion inhibitor is longer than that of the soft film corrosion inhibitor, and the corrosion inhibitor also meets the performance index of the corrosion inhibitor material.

The utility model discloses coating sensor probe accessible electrochemistry electronic components simulation is the circuit mode, can test out electrochemical characteristics such as resistance of anticorrosive coating according to the electrochemistry principle to this sign anticorrosive coating's performance. The utility model discloses main advantage as follows: (1) when the probe is used for monitoring, the probe does not need to be in direct contact with the metal structure and the coating of the machine body, but adopts the same material as the metal structure and the surface coating of the machine body, and indirectly reflects the aging and failure conditions of the coating on the surface of the machine body. (2) No electrolyte solution is required for probe monitoring. (3) The probe electrode is positioned at the interface of the coating and the metal body, and can accurately monitor the performance change at the interface of the coating and the metal body, thereby accurately evaluating the corrosion failure condition of the coating. (4) The probe has an electromagnetic shielding function.

Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (8)

1. A coated sensor probe apparatus, the apparatus comprising: the probe comprises a probe shell, a coating, a probe bracket and a cable;

wherein, the probe shell extends two lugs outwards and is provided with holes for being fixed with the machine body; the probe shell is characterized in that the middle of the probe shell is square outside and round inside, a cylindrical cavity is formed inside, a protrusion is arranged on the bottom surface inside the cylindrical cavity and used for positioning the probe support, the probe is fixed on the probe support, the coating is coated on the outer surface of the probe shell, one end of the probe is connected with the cable, and the other end of the probe penetrates through the probe shell and contacts with the coating.

2. The coated sensor probe device of claim 1, wherein the probe housing is made of the same material as the material of the structure of the monitored body area.

3. The coating sensor probe device of claim 1, wherein the number of the probes is two, the probe housing is provided with two through holes, the diameter of the two through holes is larger than the diameter of the probes, and the probes pass through the two through holes to contact with the coating coated on the outer surface of the probe housing.

4. The coated sensor probe unit of claim 3, wherein the glue is filled between the two through holes of the probe housing and the probe to prevent the probe from contacting the probe housing.

5. The coating sensor probe device of claim 4, wherein the probe is made of copper, and two probes are inserted into the through hole of the probe housing to form a two-point electrode for sensing the change of the amplitude voltage and the phase voltage of the coating.

6. The coated sensor probe unit of claim 1, wherein the probe holder is made of plastic material for fixing and positioning the probe to prevent the probe body from contacting the probe housing;

the probe support is of a cross connection structure with a transverse part and two vertical parts, and two probe through holes are formed in the transverse part and used for the probe to penetrate through.

7. The coated sensor probe device of claim 1, further comprising a screw for securing a shielded wire of a cable.

8. The coated sensor probe device of claim 1, wherein the cylindrical cavity is filled with a gel, and the gel is an epoxy resin gel.

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