Multi-mode self-powered cable joint overheating early warning patch

Abstract

The utility model discloses a multi-mode self-powered cable joint overheating early warning paster comprising a memory metal net, the surface of the memory metal net is provided with a fixing groove, and the fixing groove is internally provided with a self-powered mechanism; the self-powered mechanism comprises a fixing frame, a piezoelectric module, a heat conducting plate, a pyroelectric module, a dielectric layer, a sealing cover and a connecting groove; the number of the fixing frames is two. The utility model relates to the technical field of electric power system equipment monitoring, and the overheating early warning patch of the multi-mode self-powered cable joint realizes multi-mode cooperative power supply, not only can convert mechanical energy into electric energy through vibration of a cable, but also can convert heat energy into electric energy through absorption of heat of the cable joint, so that the cable joint can be protected from being damaged. The defect of single-mode power supply is avoided, the power supply stability and the cruising ability are greatly improved, and the requirement for long-term, stable and reliable monitoring of the cable connector under the complex working condition is met.

Description

Technical Field

[0001] This utility model relates to the field of power system equipment monitoring technology, specifically an overheat warning patch for a multi-mode self-powered cable connector. Background Technology

[0002] Cable joints are key components in power transmission systems, and their operating status directly affects the safe and stable operation of the power system. Therefore, monitoring the temperature of cable joints is very important.

[0003] Traditional temperature detection devices require operators to power the monitoring components via wired or wireless methods. An alarm is triggered when the temperature of the high-voltage cable joint is too high.

[0004] However, in actual use, traditional battery power supply may be limited by its own capacity. After a certain period of operation, the battery needs to be replaced by staff. Since the working environment of the cable joint is very complex, the replacement process requires the use of professional equipment, which is not only time-consuming and labor-intensive, but may also interrupt the operation of the cable, affecting the stability of the power supply. Furthermore, due to the single power supply method, when the battery is damaged or depleted and not replaced in time, the warning patch may lose its monitoring and warning function. If the cable joint gradually overheats due to overload, poor contact, or other reasons, it may not be detected in time. It may develop from local overheating to insulation aging, short circuit, or even fire, which may cause large-scale power outages or equipment burnout, threatening the safe operation of the power system. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an overheat warning patch for a multi-mode self-powered cable connector. This solves the problem that in practical use, traditional battery-powered systems are limited by their own capacity, requiring battery replacement after a certain period of operation. Because the working environment of cable connectors is very complex, the replacement process requires specialized equipment, which is not only time-consuming and labor-intensive but may also interrupt cable operation, affecting the stability of power supply. Furthermore, due to the single power supply method, when the battery is damaged or depleted and not replaced in time, the warning patch may lose its monitoring and warning functions. If the cable connector gradually overheats due to overload, poor contact, or other reasons, it may not be detected in time, potentially developing from localized overheating into insulation aging, short circuits, or even fires, possibly causing large-scale power outages or equipment burnout, threatening the safe operation of the power system.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an overheat warning patch for a multi-mode self-powered cable connector, comprising a shape memory metal mesh, with a fixing groove on the surface of the shape memory metal mesh, and a self-powered mechanism disposed inside the fixing groove; the self-powered mechanism comprises a fixing frame, a piezoelectric module, a heat-conducting plate, a pyroelectric module, a dielectric layer, a sealing cover, and a connecting groove; two fixing frames are provided, respectively fixedly connected to both sides of the inner wall of the fixing groove, and a piezoelectric module is fixedly connected inside each of the two fixing frames; a heat-conducting plate is fixedly connected to one side of the outer wall of the two fixing frames that is close to each other; the outer wall of the heat-conducting plate is fixedly connected to the inner wall of the fixing groove; a pyroelectric module is fixedly connected to the top of the heat-conducting plate; a dielectric layer is attached to the top of the pyroelectric module; a sealing cover is disposed above the dielectric layer; and the inner wall of the sealing cover is snapped into the outer wall of the shape memory metal mesh.

[0007] Preferably, a connecting mechanism is provided on the side of the sealing cover; the connecting mechanism includes a connecting groove, an extension seat, an extension groove and a first adhesive strip; the connecting groove is opened in the side wall of the sealing cover, the inner wall of the connecting groove is engaged with the extension seat, the outer wall of the extension seat is provided with an extension groove, the bottom of the extension groove is fixedly connected to the first adhesive strip, and the bottom of the first adhesive strip is fixedly connected to the top of the memory metal mesh.

[0008] Preferably, a color-changing layer is fixedly connected to the inner wall of the sealing cover, a light-emitting layer is attached to the bottom of the color-changing layer, and the bottom of the light-emitting layer is attached to the top of the dielectric layer.

[0009] Preferably, the top of the sealing cover has a light-transmitting hole.

[0010] Preferably, a second adhesive strip is fixedly connected to the bottom of the sealing cover. Beneficial effects

[0011] This invention provides an overheat warning patch for a multi-mode self-powered cable joint. It offers the following advantages: This multi-mode self-powered cable joint overheat warning patch, through the cooperation of a mounting frame, piezoelectric module, heat-conducting plate, pyroelectric module, dielectric layer, and sealing cover, achieves multi-mode coordinated power supply. It can convert mechanical energy into electrical energy through cable vibration and also convert thermal energy into electrical energy by absorbing heat from the cable joint, avoiding the shortcomings of single-mode power supply. This greatly increases power supply stability and endurance, meeting the needs for long-term, stable, and reliable monitoring of cable joints under complex operating conditions.

[0012] By combining the connecting groove, extension seat, extension groove and first adhesive strip, the connection effect between the memory metal mesh and the sealing cover is improved. Even after the memory alloy is deformed, the sealing cover can be firmly fixed on its top, avoiding cracks at the connection between the sealing cover and the memory metal mesh due to changes. This prevents foreign objects from entering the interior of the sealing cover and interfering with the normal operation of the warning patch, greatly improving the working stability and service life of the warning patch. Attached Figure Description

[0013] Figure 1 This is an appearance drawing of the present utility model;

[0014] Figure 2 for Figure 1 Exploded view;

[0015] Figure 3 for Figure 1 Sectional view in;

[0016] Figure 4 for Figure 3 A schematic diagram of the structure of the heat-conducting plate, pyroelectric module, and dielectric layer.

[0017] In the diagram: 1. Memory metal mesh; 2. Fixing groove; 3. Fixing frame; 4. Piezoelectric module; 5. Heat-conducting plate; 6. Pyroelectric module; 7. Dielectric layer; 8. Sealing cover; 9. Connecting groove; 10. Extension seat; 11. Extension groove; 12. First adhesive strip; 13. Color-changing layer; 14. Light-emitting layer; 15. Light-transmitting hole; 16. Second adhesive strip. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In practical use, traditional battery power supply may be limited by its own capacity. After a certain period of operation, the battery needs to be replaced by staff. Since the working environment of the cable joint is very complex, the replacement process requires the use of professional equipment, which is not only time-consuming and labor-intensive, but may also interrupt the operation of the cable, affecting the stability of the power supply. Furthermore, due to the single power supply method, when the battery is damaged or depleted and not replaced in time, the warning patch may lose its monitoring and warning function. If the cable joint gradually overheats due to overload, poor contact, or other reasons, it may not be detected in time. It may develop from local overheating to insulation aging, short circuit, or even fire, which may cause large-scale power outages or equipment burnout, threatening the safe operation of the power system.

[0020] In view of this, the present invention provides an overheat warning patch for a multi-mode self-powered cable joint. This multi-mode self-powered cable joint overheat warning patch, through the cooperation of a fixing frame, a piezoelectric module, a heat-conducting plate, a pyroelectric module, a dielectric layer, and a sealing cover, achieves multi-mode coordinated power supply. It can convert mechanical energy into electrical energy through cable vibration, and can also convert thermal energy into electrical energy by absorbing heat from the cable joint. This avoids the defects of single-mode power supply, greatly increases power supply stability and endurance, and meets the needs of long-term, stable, and reliable monitoring of cable joints under complex working conditions.

[0021] Those skilled in the art will connect the electrical components and their compatible power supplies in this case using wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle below, where the electrical components are connected in the order of operation. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without further explanation of electrical control.

[0022] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0023] Example 1, by Figure 1-4 It is known that an overheat warning patch for a multi-mode self-powered cable connector includes a shape memory metal mesh 1. A fixing groove 2 is formed on the surface of the shape memory metal mesh 1, and a self-powered mechanism is set inside the fixing groove 2. The self-powered mechanism includes a fixing frame 3, a piezoelectric module 4, a heat-conducting plate 5, a pyroelectric module 6, a dielectric layer 7, a sealing cover 8, and a connecting groove 9. Two fixing frames 3 are provided, which are fixedly connected to the inner walls of the fixing groove 2 respectively. The piezoelectric module 4 is fixedly connected inside the two fixing frames 3. The heat-conducting plate 5 is fixedly connected to the side of the outer wall of the two fixing frames 3 that is close to each other. The outer wall of the heat-conducting plate 5 is fixedly connected to the inner wall of the fixing groove 2. The pyroelectric module 6 is fixedly connected to the top of the heat-conducting plate 5. The dielectric layer 7 is attached to the top of the pyroelectric module 6. A sealing cover 8 is set above the dielectric layer 7. The inner wall of the sealing cover 8 is snapped into the outer wall of the shape memory metal mesh 1.

[0024] In the specific implementation process, it is worth noting that the shape memory metal mesh 1 is similar to the shape of an "I" and uses 0.8mm nickel-titanium-niobium alloy sheets. The mesh triggers a martensitic phase transformation at 65℃, automatically curling and fitting the curved surface of the irregular cable joint, tightly wrapping the joint. The bonding area between the two can reach more than 95%. In actual production, a mesh structure with a denser center and sparser edges is used to enhance structural flexibility and heat conduction. At high temperatures, the central area has greater shrinkage force, resulting in a tighter fit to the cable joint. The fixing groove 2 is located in the center of the shape memory metal mesh 1, resembling a square. The fixing frame 3 is made of stainless steel and is symmetrically arranged. It is fixed inside the fixing groove 2 by a high-temperature resistant thin layer of silicone-based adhesive. The piezoelectric module 4 is... The piezoelectric module 4, consisting of a lanthanum-doped lead magnesium magnesium niobate thin film, generates charge through deformation. The heat-conducting plate 5, similarly rectangular in shape, is fixed inside the fixing groove 2 using a high-temperature resistant thin-layer silicon-based adhesive. Its material can be alumina, and its bottom can also use a high-temperature resistant thin-layer silicon-based adhesive for a stronger connection to the cable connector. The pyroelectric module 6 uses a lithium tantalate crystal as the pyroelectric element, with gold electrodes plated on both sides. Temperature changes at the cable connector are transmitted through the heat-conducting plate 5, causing charge to be generated on the surface of the pyroelectric crystal. The dielectric layer 7 is a high-dielectric-constant insulating dielectric layer, which can be made of materials such as silicon dioxide and alumina. This structure, together with the pyroelectric module 6 and the light-emitting structure, forms a sandwich-type capacitor model. The luminous intensity of the light-emitting structure can be enhanced through the capacitance effect, making the warning effect more obvious. This process requires no external power supply and relies entirely on the capacitive coupling effect for self-driven enhancement. The current generated by the piezoelectric module 4 and the pyroelectric module 6 flows into the sandwich capacitor model, providing power for subsequent operation. The sealing cover 8 has an 'n'-shaped cross-section, and its material can be selected from fluorinated ethylene propylene copolymer. Its outer wall is semi-transparent, providing advanced dust and water resistance and resistance to acid and alkali corrosion, protecting its internal layered structure from external environmental erosion. In actual use, the cable connected to the cable joint may shake due to natural or human factors. The mechanical energy of the shaking is transferred to the cable joint and then transmitted through electricity. The cable connector transmits energy to the memory metal mesh 1. The memory metal mesh 1 transfers the mechanical energy generated by the shaking to the piezoelectric module 4 through the fixing frame 3. The piezoelectric module 4 deforms to generate piezoelectric charges. The piezoelectric charges are introduced into the input end of the electrical layer 7 through micro-conductive connectors (such as silver nanowires). At the same time, the memory metal mesh 1 is affected by temperature and deforms autonomously to fit the outer wall of the cable connector to achieve a fixing effect. Furthermore, the pyroelectric module 6 absorbs the heat generated by the cable connector and transferred through the heat-conducting plate 5, causing the pyroelectric chip surface to generate charges. The charges enter the dielectric layer 7. The capacitance effect of the dielectric layer 7 can store piezoelectric charges and pyroelectric charges at the same time and transmit a portion of the power to the alarm structure to achieve multi-mode self-powered operation.

[0025] Furthermore, a connecting mechanism is provided on the side of the sealing cover 8; the connecting mechanism includes a connecting groove 9, an extension seat 10, an extension groove 11 and a first adhesive strip 12; the connecting groove 9 is opened on the side wall of the sealing cover 8, the extension seat 10 is snapped into the inner wall of the connecting groove 9, the extension groove 11 is opened on the outer wall of the extension seat 10, the first adhesive strip 12 is fixedly connected to the bottom of the extension groove 11, and the bottom of the first adhesive strip 12 is fixedly connected to the top of the memory metal mesh 1;

[0026] In the specific implementation process, it is worth noting that there are two connecting grooves 9, respectively opened on both sides of the outer wall of the sealing cover 8, with a cross-section similar to a trapezoid. There are two extension seats 10, which are generally similar to triangular prisms and can be made of silicone rubber composite material. Two extension grooves 11 are opened on the outer wall of each extension seat 10, and the cross-section of the extension groove 11 is also similar to a trapezoid. Two first adhesive strips 12 are provided, and their material can be a high-temperature resistant thin-layer silicone-based adhesive. The first adhesive strips 12 can fix the extension seat 10 and the memory metal mesh 1 together. In actual use, the memory metal mesh 1 is heated and deformed. As the two extension seats 10 are stretched by the deformation force of the memory metal mesh 1, the extension seats 10 need to ensure the stability of the sealing cover 8, thus generating deformation. The deformation direction is along the extension groove 11 and extends to both sides of the extension groove 11. The extension seats 10 are stretched, and the extension seats 10 can absorb the displacement through their own elastic deformation, avoiding the breakage or loosening of the sealing cover 8 and the memory metal mesh 1 due to rigid connection. This further enhances the connection strength and sealing performance between the sealing cover 8 and the memory metal mesh 1, effectively preventing the sealing cover 8 from falling off and external impurities from entering, and providing a good working environment for the internal modules.

[0027] Furthermore, a color-changing layer 13 is fixedly connected to the inner wall of the sealing cover 8, and a light-emitting layer 14 is attached to the bottom of the color-changing layer 13. The bottom of the light-emitting layer 14 is attached to the top of the dielectric layer 7.

[0028] In the specific implementation process, it is worth noting that the color-changing layer 13 can be made of cobalt complex thermochromic material, which is directly sprayed onto the inner wall of the sealing cover 8 to ensure that the thermochromic signal is directly visible. In actual use, the temperature transmitted from the cable connector can directly trigger the change of the molecular structure of the cobalt complex, causing the color to change from blue to pink, which is clearly visible in white light. The light-emitting layer 14 uses organic electroluminescent material OLED. Since the relative permittivity of the dielectric layer 7 is much greater than that of air, the electric field strength in the dielectric layer 7 is significantly higher than that in the air gap under the same charge density, thereby enhancing the local electric field on the OLED surface, promoting charge injection, and exciting the OLED to emit light. Furthermore, the superposition of dual-source charges inside the dielectric layer 7 can enhance the brightness of the light emission. Especially in dark environments, even if the output of a single energy source is weak, the warning signal can still be clearly seen, thus improving the visual effect of the warning patch.

[0029] Example 2, by Figure 1-4 It can be seen that the top of the sealing cover 8 has a light-transmitting hole 15;

[0030] In the specific implementation process, it is worth noting that there are multiple light-transmitting holes 15, and the specific number is not limited, as long as it meets the working requirements. The outer surface is circular, and the inner wall is fixedly connected with high-temperature resistant borosilicate glass with a light transmittance of over 90%. It can clearly transmit the light of the light-emitting layer 14 and the color change of the color-changing layer 13, thereby further improving the visual effect of the warning patch.

[0031] Furthermore, a second adhesive strip 16 is fixedly connected to the bottom of the sealing cover 8;

[0032] In the specific implementation process, it is worth noting that there are two second adhesive strips 16, which are fixed to the bottom of the sealing cover 8. Their material is the same as that of the first adhesive strip 12. The second adhesive strip 16 is used to temporarily fix the warning patch to the surface of the cable joint. After installation, it is locked by the memory metal mesh 1. When the warning patch is removed, the silicone adhesive will not remain on the surface of the joint. The bottom of the second adhesive strip 16 is provided with a dustproof layer. The dustproof layer is made of PET film material. The dustproof layer directly seals the bottom of the second adhesive strip 16, the piezoelectric module 4 and the heat conduction plate 5, effectively preventing dust and impurities from being contaminated during storage and transportation. It can also be easily peeled off during installation without leaving any glue residue, thus ensuring the working effect of the overheat warning patch of the multi-mode self-powered cable joint.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An overheat warning patch for a multi-mode self-powered cable connector, comprising a shape memory metal mesh (1), characterized in that: The surface of the memory metal mesh (1) is provided with a fixing groove (2), and a self-powered mechanism is provided inside the fixing groove (2); The self-powered mechanism includes a fixed frame (3), a piezoelectric module (4), a heat-conducting plate (5), a pyroelectric module (6), a dielectric layer (7), a sealing cover (8), and a connecting groove (9); Two fixing frames (3) are provided, which are fixedly connected to the inner walls of the fixing groove (2) respectively. Piezoelectric modules (4) are fixedly connected inside the two fixing frames (3). A heat-conducting plate (5) is fixedly connected to the outer wall of the two fixing frames (3) on the side that is close to each other. The outer wall of the heat-conducting plate (5) is fixedly connected to the inner wall of the fixing groove (2). A pyroelectric module (6) is fixedly connected to the top of the heat-conducting plate (5). A dielectric layer (7) is attached to the top of the pyroelectric module (6). A sealing cover (8) is provided above the dielectric layer (7). The inner wall of the sealing cover (8) is snapped onto the outer wall of the memory metal mesh (1).

2. The overheat warning patch for a multi-mode self-powered cable connector according to claim 1, characterized in that: A connecting mechanism is provided on the side of the sealing cover (8); The connecting mechanism includes a connecting groove (9), an extension seat (10), an extension groove (11), and a first adhesive strip (12). The connecting groove (9) is opened on the side wall of the sealing cover (8). The inner wall of the connecting groove (9) is fitted with an extension seat (10). The outer wall of the extension seat (10) is provided with an extension groove (11). The bottom of the extension groove (11) is fixedly connected to a first adhesive strip (12). The bottom of the first adhesive strip (12) is fixedly connected to the top of the memory metal mesh (1).

3. The overheat warning patch for a multi-mode self-powered cable connector according to claim 1, characterized in that: The inner wall of the sealing cover (8) is fixedly connected with a color-changing layer (13), and a light-emitting layer (14) is attached to the bottom of the color-changing layer (13). The bottom of the light-emitting layer (14) is attached to the top of the dielectric layer (7).

4. The overheat warning patch for a multi-mode self-powered cable connector according to claim 1, characterized in that: The top of the sealing cover (8) is provided with a light-transmitting hole (15).

5. The overheat warning patch for a multi-mode self-powered cable connector according to claim 1, characterized in that: The bottom of the sealing cover (8) is fixedly connected to a second adhesive strip (16).

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