A passive self-powered shape memory conformable cable joint dual-mode overheat warning patch

Abstract

This utility model discloses a dual-mode overheat warning patch for a self-powered, shape-memory alloy cable connector, comprising a shape-memory alloy mesh, with an adhesive layer fixedly connected to the bottom of the mesh. This utility model relates to the field of power system equipment monitoring technology. This dual-mode overheat warning patch for a self-powered, shape-memory alloy cable connector, through the cooperation of the shape-memory alloy mesh, a self-powered layer, a high-dielectric-constant insulating dielectric layer, warning sub-layer A, warning sub-layer B, and an encapsulation layer, enables the detection device to automatically alarm when the cable connector temperature is too high. Regardless of whether it is in a passive environment, a bright light environment, or a dark environment, it can ensure stable output and clear identification of the warning signal. Furthermore, the shape-memory alloy mesh can tightly wrap the cable connector, greatly overcoming installation defects and maintaining reliable performance during long-term use, significantly extending the service life of the warning patch.

Description

Technical Field

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

[0002] In power systems, high-voltage cable joints (such as cable joints in combiner cabinets of 110kV and above substations and new energy power plants) are key nodes in power transmission, and their operating temperature is directly related to the safety and stability of the power system.

[0003] In traditional temperature detection devices, staff supply power to them via wires and monitor the temperature of the high-voltage cable joints in real time using internal temperature sensors.

[0004] However, in actual use, on the one hand, traditional power supply methods are extremely difficult to install, and the wiring is easily affected by environmental corrosion and vibration, resulting in high maintenance costs and low reliability. On the other hand, existing early warning methods have obvious blind spots. Single light signal early warning is easily interfered with in strong light environments, and single color change early warning cannot function in dark environments, thus failing to achieve all-weather real-time monitoring. Furthermore, cable joints are mostly irregular curved surface structures, and traditional fixing methods are difficult to achieve a tight fit, which easily leads to gaps in the fit, resulting in delayed temperature monitoring and slow early warning response. Moreover, after long-term use, they are prone to loosening due to vibration and environmental changes, affecting the accuracy of monitoring and service life. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a dual-mode overheat warning patch with a self-powered shape memory bonding cable connector. This solves several problems encountered in practical use. Firstly, traditional power supply methods are extremely difficult to install, and wiring is susceptible to environmental corrosion and vibration, leading to high maintenance costs and low reliability. Secondly, existing warning methods have significant blind spots; single light signal warnings are easily interfered with in strong light environments, and single color change warnings are ineffective in dark environments, thus failing to achieve all-weather real-time monitoring. Furthermore, cable connectors are often irregularly shaped curved structures, making it difficult to achieve a tight fit using traditional fixing methods, easily resulting in gaps. This leads to delayed temperature monitoring, slow warning response, and, after long-term use, loosening due to vibration and environmental changes, affecting monitoring accuracy and service life.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-mode overheat warning patch for a self-powered shape memory bonding cable connector, comprising a shape memory alloy mesh, an adhesive layer fixedly connected to the bottom of the shape memory alloy mesh, a self-powered layer disposed above the shape memory alloy mesh, a high dielectric constant insulating dielectric layer bonded to the top of the self-powered layer, a warning sub-layer A bonded to the top of the high dielectric constant insulating dielectric layer, a warning sub-layer B bonded to the top of the warning sub-layer A, and an encapsulation layer fixedly connected to the top of the warning sub-layer B, the inner wall of the encapsulation layer being snapped onto the outer wall of the shape memory alloy mesh.

[0007] Preferably, the inner wall of the encapsulation layer is provided with an installation groove, an adhesive strip is fixedly connected to the inner wall of the installation groove, a loading groove is provided above the adhesive strip, and a nickel-chromium alloy wire is inserted into the inner wall of the loading groove.

[0008] Preferably, a bending groove is formed at the bottom of the encapsulation layer.

[0009] Preferably, an observation window is provided on the top of the encapsulation layer.

[0010] Preferably, a buffer layer is attached to the bottom of the self-powered layer, and the bottom of the buffer layer is attached to the top of the shape memory alloy mesh.

[0011] This invention provides a dual-mode overheat warning patch for a self-powered, shape-memory bonding cable connector. It offers the following advantages: This dual-mode overheat warning patch for a self-powered, shape-memory bonding cable connector, through the combination of a shape-memory alloy mesh, a self-powered layer, a high-dielectric-constant insulating dielectric layer, warning sub-layer A, warning sub-layer B, and an encapsulation layer, enables the detection device to automatically alarm when the cable connector temperature is too high. Regardless of whether the environment is passive, bright light, or dark, it ensures stable output and clear identification of the warning signal. Furthermore, the shape-memory alloy mesh tightly wraps around the cable connector, greatly overcoming installation defects and maintaining reliable performance during long-term use, significantly extending the service life of the warning patch.

[0012] By combining mounting grooves, adhesive strips, loading grooves, and nickel-chromium alloy wires, the shape memory alloy mesh and the encapsulation layer are reinforced, preventing disintegration during long-term operation and ensuring that the internal functional layers do not leave the encapsulation layer, thus guaranteeing the positional stability of the internal functional layers during long-term use. 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 2 A schematic diagram of the structure of the encapsulation layer, adhesive strip, and nickel-chromium alloy wire.

[0017] In the diagram: 1. Shape memory alloy mesh; 2. Adhesive layer; 3. Self-powered layer; 4. High dielectric constant insulating dielectric layer; 5. Warning sublayer A; 6. Warning sublayer B; 7. Encapsulation layer; 8. Mounting slot; 9. Adhesive strip; 10. Loading slot; 11. Nickel-chromium alloy wire; 12. Bending slot; 13. Observation window; 14. Buffer layer. 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, on the one hand, traditional power supply methods are extremely difficult to install, and the wiring is easily affected by environmental corrosion and vibration, resulting in high maintenance costs and low reliability. On the other hand, existing early warning methods have obvious blind spots. Single light signal early warning is easily interfered with in strong light environments, and single color change early warning cannot function in dark environments, thus failing to achieve all-weather real-time monitoring. Furthermore, cable joints are mostly irregular curved surface structures, and traditional fixing methods are difficult to achieve a tight fit, which easily leads to gaps in the fit, resulting in delayed temperature monitoring and slow early warning response. Moreover, after long-term use, they are prone to loosening due to vibration and environmental changes, affecting the accuracy of monitoring and service life.

[0020] In view of this, the present invention provides a dual-mode overheat warning patch for a self-powered shape memory bonding cable joint. This dual-mode overheat warning patch for a self-powered shape memory bonding cable joint, through the cooperation of a shape memory alloy mesh, a self-powered layer, a high dielectric constant insulating dielectric layer, warning sub-layer A, warning sub-layer B, and an encapsulation layer, enables the detection device to automatically alarm when the cable joint temperature is too high. Regardless of whether it is in a passive environment, a strong light environment, or a dark environment, it can ensure stable output and clear identification of the warning signal. Furthermore, the shape memory alloy mesh can tightly wrap the cable joint, greatly overcoming installation defects and maintaining reliable performance in long-term use, thus significantly extending the service life of the warning patch.

[0021] 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.

[0022] Example 1, by Figure 1-4 It is known that a dual-mode overheat warning patch for a self-powered shape memory bonding cable connector includes a shape memory alloy mesh 1, an adhesive layer 2 fixedly connected to the bottom of the shape memory alloy mesh 1, a self-powered layer 3 disposed above the shape memory alloy mesh 1, a high dielectric constant insulating dielectric layer 4 bonded to the top of the self-powered layer 3, a warning sub-layer A5 bonded to the top of the high dielectric constant insulating dielectric layer 4, a warning sub-layer B6 bonded to the top of the warning sub-layer A5, an encapsulation layer 7 fixedly connected to the top of the warning sub-layer B6, and the inner wall of the encapsulation layer 7 snapped onto the outer wall of the shape memory alloy mesh 1;

[0023] In the specific implementation process, it is worth noting that the shape memory alloy mesh 1 uses a 0.8mm nickel-titanium-niobium (NiTiNb) alloy sheet, which can trigger 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%. Furthermore, the shape memory alloy mesh 1 adopts a gradient mesh structure with denser pores at the center and sparser pores at the edges to enhance structural flexibility and heat conduction. At high temperatures, the central region has greater shrinkage force, resulting in a tighter fit to the cable joint. The adhesive layer 2 uses a high-temperature resistant thin-layer silicone-based adhesive to temporarily fix the warning patch to the surface of the cable joint. After installation, it is locked in place by the shape memory alloy mesh 1. When the warning patch is removed, the silicone-based adhesive... The adhesive will not leave residue on the joint surface. The bottom of adhesive layer 2 is equipped with a dustproof sheet made of 0.05-0.1mm thick PET film. This material has good wear resistance, weather resistance, and release properties, effectively preventing dust and impurities from adhering to adhesive layer 2 during storage and transportation. It can also be easily peeled off during installation without leaving adhesive residue, ensuring that the adhesion of adhesive layer 2 is not affected. The self-powered layer 3 is a pyroelectric film made of P(VDF-TrFE) material (polyvinylidene fluoride-trifluoroethylene copolymer). It generates charge in response to changes in joint temperature. Charge accumulation is used to excite OLED light emission. The high dielectric constant insulating dielectric layer 4 can be made of... Using materials such as silicon dioxide and aluminum oxide, this structure, together with the self-powered layer 3 and the warning sublayer A5, forms a sandwich-like capacitor model. This enhances the luminous intensity of the OLED through the capacitive effect, making the warning effect more pronounced. Furthermore, in practical use, this process requires no external power supply, relying entirely on the capacitive coupling effect to achieve self-driven enhancement. The warning sublayer A5 uses organic electroluminescent OLED material, where the relative permittivity of the dielectric layer is much greater than that of air. Under the same charge density, the electric field strength within the dielectric layer is significantly higher than that of the air gap, thereby enhancing the local electric field on the OLED surface, promoting charge injection, and exciting OLED luminescence. The warning sublayer B6 uses a 40μm cobalt complex thermochromic material. In practical use, it directly... Printed on the inner wall of the encapsulation layer 7, the thermochromic signal is directly visible. Temperature directly triggers changes in the molecular structure of the cobalt complex, causing the color to change from blue to pink, which is clearly visible in white light. The encapsulation layer 7 is made of 0.5mm FEP (fluorinated ethylene propylene copolymer), and its outer wall is semi-transparent, achieving IP68 dust and water resistance and acid and alkali corrosion resistance. It can effectively protect the internal stacked structure from external environmental erosion. Through the above structure, the warning patch can ensure stable output and clear identification of the warning signal regardless of whether it is in a passive environment, a strong light environment, or a dark environment, which greatly improves the working reliability of this self-powered shape memory bonding cable connector dual-mode overheat warning patch.

[0024] Furthermore, the inner wall of the encapsulation layer 7 is provided with an installation groove 8, an adhesive strip 9 is fixedly connected to the inner wall of the installation groove 8, a loading groove 10 is provided above the adhesive strip 9, and a nickel-chromium alloy wire 11 is inserted into the inner wall of the loading groove 10.

[0025] In the specific implementation process, it is worth noting that there are two mounting grooves 8, located on the top two sides of the inner wall of the encapsulation layer 7 respectively. The overall shape is similar to a rectangular groove. The adhesive strip 9 is made of the same material as the adhesive layer 2, which can increase the fixing effect between the encapsulation layer 7 and the shape memory alloy mesh 1. There are two loading grooves 10, which are circular rod-shaped through grooves. Two nickel-chromium alloy wires 11 are provided and inserted into the inside of the loading grooves 10. After the nickel-chromium alloy wires 11 are inserted into the loading grooves 10, their two ends are processed into circular plates to limit them and prevent them from sliding out of the inside of the loading grooves 10. When the shape memory alloy mesh 1 deforms, the cooperation of the mounting grooves 8, adhesive strips 9, loading grooves 10 and nickel-chromium alloy wires 11 can ensure that the internal functional layers do not leave the inside of the encapsulation layer 7, thereby improving the structural stability of the self-powered shape memory bonding cable connector.

[0026] Furthermore, a bending groove 12 is provided at the bottom of the encapsulation layer 7;

[0027] In the specific implementation process, it is worth noting that there are multiple bending grooves 12 in a triangular shape. The bending grooves 12 can relieve concentrated stress, enhance structural flexibility, and make the shape memory alloy mesh 1 and the encapsulation layer 7 more closely connected, thereby improving the service life of the dual-mode overheat warning patch of the self-powered shape memory bonding cable connector.

[0028] Example 2, by Figure 1-4 It can be seen that an observation window 13 is provided on the top of the encapsulation layer 7;

[0029] In the specific implementation process, it is worth noting that a transparent plate is fixedly connected inside the observation window 13. The transparent plate is made of the same material as the encapsulation layer 7, but the transparent plate can provide more than 90% light transmittance, so that the staff can clearly observe the situation inside the encapsulation layer 7, thereby improving the observation convenience of the self-powered shape memory fitting cable connector.

[0030] Furthermore, a buffer layer 14 is attached to the bottom of the self-powered layer 3, and the bottom of the buffer layer 14 is attached to the top of the shape memory alloy mesh 1.

[0031] In the specific implementation process, it is worth noting that the buffer layer 14 is set between the self-powered layer 3 and the shape memory alloy mesh 1. The buffer layer 14 is a flexible high-temperature resistant polyimide film with a thickness of 0.1-0.2mm. It does not hinder heat transfer, and can provide a buffer space for the self-powered layer 3 when the shape memory alloy mesh 1 deforms, so as to avoid the rigid edge of the shape memory alloy mesh 1 from scratching the surface of the self-powered layer 3. It can also enhance the cooperative deformation capability between layers, thereby further improving the service life of the dual-mode overheat warning patch of the self-powered shape memory bonding cable connector.

[0032] 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. A dual-mode overheat warning patch for a self-powered shape memory bonding cable connector, comprising a shape memory alloy mesh (1), characterized in that: The bottom of the shape memory alloy mesh (1) is fixedly connected to an adhesive layer (2), and a self-powered layer (3) is provided above the shape memory alloy mesh (1). A high dielectric constant insulating dielectric layer (4) is attached to the top of the self-powered layer (3). A warning sub-layer A (5) is attached to the top of the high dielectric constant insulating dielectric layer (4). A warning sub-layer B (6) is attached to the top of the warning sub-layer A (5). An encapsulation layer (7) is fixedly connected to the top of the warning sub-layer B (6). The inner wall of the encapsulation layer (7) is snapped onto the outer wall of the shape memory alloy mesh (1).

2. The dual-mode overheat warning patch for a self-powered shape memory bonding cable connector according to claim 1, characterized in that: The inner wall of the encapsulation layer (7) is provided with an installation groove (8), and an adhesive strip (9) is fixedly connected to the inner wall of the installation groove (8). A loading groove (10) is provided above the adhesive strip (9), and a nickel-chromium alloy wire (11) is inserted into the inner wall of the loading groove (10).

3. The dual-mode overheat warning patch for a self-powered shape memory bonding cable connector according to claim 1, characterized in that: A bending groove (12) is provided at the bottom of the encapsulation layer (7).

4. The dual-mode overheat warning patch for a self-powered shape memory bonding cable connector according to claim 1, characterized in that: An observation window (13) is provided on the top of the encapsulation layer (7).

5. The dual-mode overheat warning patch for a self-powered shape memory bonding cable connector according to claim 1, characterized in that: The bottom of the self-powered layer (3) is attached to a buffer layer (14), and the bottom of the buffer layer (14) is attached to the top of the shape memory alloy mesh (1).

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