Power failure early warning device based on temperature-sensing color-changing material
By using temperature-sensitive color-distorting materials and low melting point alloy technology in the power fault warning device, the problems of complex power supply and insufficient heat dissipation of traditional devices are solved, real-time monitoring without power and rapid heat dissipation are achieved, and timeliness of fault detection and equipment service life are improved.
Patent Information
- Application Number
- CN202411812641.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-03-21
AI Technical Summary
Traditional power failure warning devices have problems such as complex power supply and high cost, and lack an effective heat dissipation mechanism, which increases safety hazards.
The power failure warning device based on temperature-sensitive color-distorting materials is adopted, and the internal temperature of the junction box is monitored in real time by using the temperature-sensitive color-distorting panel, and automatically dissolves and breaks through the low-melting alloy bar, triggering the shading structure to extend out and expose the heat dissipation mesh to achieve rapid heat dissipation.
It realizes real-time monitoring of the junction box temperature without additional power, and extends the service life of the equipment through rapid heat dissipation, improving the timeliness and accuracy of fault detection and reducing safety hazards.
Smart Images
Figure CN119666170A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power failure early warning, and in particular to a power failure early warning device based on a temperature-sensitive color-changing material. Background Art
[0002] In the power system, the junction box is an important component that connects multiple cables and makes electrical connections. However, due to poor contact of the terminal, cable overload or aging, the temperature inside the junction box may rise abnormally, leading to safety accidents such as fire. Therefore, it is necessary to install an early warning device in the junction box to monitor the temperature inside the junction box.
[0003] The traditional early warning device installed in the junction box is generally an electric power fault early warning device based on a temperature sensor, that is, a combination of a temperature sensor and a humidity sensor is installed in the junction box to monitor the operating status of the junction box in real time, including key parameters such as temperature and humidity. When the system detects that there is a risk of failure in the junction box, it will quickly issue an early warning.
[0004] However, these devices often have the following problems: first, the temperature sensor requires an additional power supply, which increases the complexity and cost of the system, and the temperature and humidity sensor power supply fails and is cut off, making it impossible to perform normal monitoring work; second, the early warning device only has a single early warning monitoring function, and the junction box is also insufficient in heat dissipation. When the temperature inside the junction box rises abnormally, there is a lack of effective heat dissipation mechanism to reduce the temperature in time, thereby exacerbating safety hazards.
[0005] Therefore, it is necessary to design a power fault warning device based on temperature-sensitive color-changing materials to solve the above problems. Summary of the invention
[0006] The present invention provides a power failure early warning device based on a temperature-sensitive color-changing material, which solves the above-mentioned technical problems.
[0007] In order to solve the above technical problems, the present invention provides an electric fault warning device based on temperature-sensitive color-changing materials, comprising a plurality of cables and a mounting base inserted into a line connection box and threadedly installed, the top of the mounting base is located in the line connection box and a mounting frame is fixed therein, a wiring terminal is fixed in the mounting frame, a plurality of cable holes are provided at the front and rear of the mounting base, a cable connector is installed in each cable hole, each cable is passed through the line connection box through the cable connector and connected to the wiring terminal, a cover plate is provided at the top of the mounting base, the front of the cover plate is hinged to the mounting base, a slot is provided in the middle of the cover plate, a temperature-sensitive color-changing panel is fixed in the slot, and active chambers are provided at the front and rear of both sides of the connection box, and the two active chambers A connecting groove is provided between the middle of the chamber and the inside of the mounting base, and two groups of heat dissipation mesh holes are provided on the left and right sides of the connection box to communicate with the active chamber. Two groups of shielding structures are slidably connected in the two active chambers. Bottom limit grooves are provided between the two rear sides of the bottom of the cover plate and the two active chambers, and a limit groove is provided on the front side of the top of the bottom limit groove. When the internal wiring terminal has poor contact, the internal temperature of the line connection box rises and is transmitted to the temperature-sensitive color-changing panel. The outer surface of the temperature-sensitive color-changing panel is coated with a temperature-sensitive color-changing powder coating. When the temperature rises to the set temperature value, the surface color of the temperature-sensitive color-changing panel changes, so that the staff can find out in time through inspection and camera monitoring for inspection and maintenance;
[0008] Each set of shielding structures includes a linkage baffle and a driven baffle, which are symmetrically arranged in the active chamber to block the two sets of heat dissipation mesh holes, and the opposite ends of the two are fixedly connected with low-melting-point alloy strips for limiting. The linkage baffle and the driven baffle are fixed with connecting plates 1 and 2 on the upper and lower sides to contact the upper and lower ends of the inner part of the active chamber, wherein the upper end of the connecting plate 2 of the linkage baffle is fixed with an L-plate, and an elastic supporting structure is arranged on the right side of the top of the linkage baffle, and the L-plate enters the cover plate through the bottom limiting groove and cooperates with the limiting groove for limiting, and four connecting blocks are fixed on the upper and lower sides of the inner part of the active chamber, and the four connecting blocks are fixed on the upper and lower sides of the inner part of the active chamber. Each of the connecting blocks is fixed with a limit spring, which is respectively connected to four connecting plates at the upper and lower positions of the linkage baffle and the driven baffle. A through hole is opened through the connecting block position near the linkage plate at the top of the connecting groove. When the low-melting-point alloy strip connecting the linkage baffle and the driven baffle is dissolved and broken, the upper and lower limit springs of the two rebound and extend out, driving the linkage baffle and the driven baffle to move and extend in the active chamber in opposite directions, exposing two heat dissipation mesh holes that are connected to the inside of the line connection box for heat dissipation, thereby reducing the internal temperature of the line connection box and prolonging the time of spontaneous combustion caused by excessive temperature, so as to timely repair.
[0009] Furthermore, the temperature-sensitive color-changing panel includes a polyvinyl chloride resin sheet, and a temperature-sensitive color-changing powder coating is applied on the outer surface of the polyvinyl chloride resin sheet. The surface color of the temperature-sensitive color-changing panel changes as the temperature rises.
[0010] Furthermore, the elastic support structure includes a spring groove opened on one side of the top of the linkage plate, a telescopic spring is fixed at the bottom of the spring groove, a support column is fixed on the top of the telescopic spring, the outer diameter of the support column is smaller than the inner diameter of the through hole, and the support column can be displaced in a small range after extending into the through hole, thereby facilitating lifting the cover plate.
[0011] Furthermore, the support column extends out through the through hole to lift up the cover plate.
[0012] Furthermore, linkage structures are provided inside both sides of the cover plate to cooperate with two sets of shielding structures, and two fluorescent structures are provided on both sides of the cover plate near the temperature-sensitive color-changing panel, and the two fluorescent structures are connected and cooperated with the two linkage structures.
[0013] Furthermore, the linkage structure includes a moving groove provided inside the cover plate, the moving groove and the through hole are throughly connected, a telescopic rod is slidably connected in the moving groove, a limiting ring is fixed in the middle of the telescopic rod, a limiting spring is sleeved on the outside of the telescopic rod, and is located between the limiting ring and the rear bottom of the moving groove. A connecting hole is provided between the moving groove and the fluorescent structure, and a ejector pin is fixed at the end of the telescopic rod, the ejector pin part passes through the connecting hole and enters the fluorescent structure, and the through hole is connected with the moving groove of the linkage structure. When the support column elastically and quickly extends into the through hole and the moving groove, the support column hits the telescopic rod, and the end of the telescopic rod is arc-shaped. When it is hit and squeezed, it moves backward, driving the limiting ring to squeeze the limiting spring, and the ejector pin completely enters the storage chamber and contacts the expansion storage bag, and the expansion storage bag is punctured and exploded by the ejector pin.
[0014] Furthermore, the fluorescent structure includes a storage chamber opened inside the cover plate, the storage chamber is connected to the movable groove through a connecting hole, an expansion storage bag is fixed at the rear of the storage chamber, and a plurality of seepage holes are opened at the side end of the storage chamber near the temperature-sensitive color-changing panel to communicate with the temperature-sensitive color-changing panel. The expansion storage bag is punctured and exploded by the ejector pin, and the fluorescent liquid stored inside flows out and fills the storage chamber. Since the cover plate is in an inclined state at this time, the fluorescent liquid flows downward and penetrates into the surface of the temperature-sensitive color-changing panel through a plurality of inclined seepage holes, so that the surface of the temperature-sensitive color-changing panel can also glow at night, so that the night staff can also discover it in time, and the junction box failure can be repaired in time.
[0015] Furthermore, the expansion storage bag is an expansion film bag filled with transparent fluorescent liquid, and there is a distance between the expansion storage bag and the ejector pin, so that the expansion storage bag will not be punctured. The ejector pin displaces and contacts the expansion storage bag, puncturing and exploding it, and the fluorescent liquid stored inside flows out and fills the storage chamber.
[0016] Furthermore, the storage chamber is narrow in front and wide in the back, and the wide rear portion is inclined toward the temperature-sensitive color-changing panel, so that the fluorescent liquid can easily flow to the multiple liquid seepage holes when flowing downward.
[0017] Furthermore, the plurality of liquid seepage holes are arranged to be inclined forward, and the liquid seeps into the surface of the temperature-sensitive color-changing panel 6 through the plurality of inclined liquid seepage holes.
[0018] Compared with the related art, the power fault warning device based on temperature-sensitive color-changing material provided by the present invention has the following beneficial effects:
[0019] The present invention provides a device that uses a temperature-sensitive color-changing panel to monitor the internal temperature of the junction box in real time and quickly change color when the temperature is abnormal, providing workers with an intuitive and immediate fault warning signal. This visual warning method greatly improves the timeliness and accuracy of fault discovery, especially in daily inspections and camera monitoring, and can quickly locate and deal with potential safety hazards. No additional power supply is required, and the warning can be triggered only by temperature changes, with high stability.
[0020] The present invention provides that when the temperature inside the junction box continues to rise to a set threshold, the low-melting-point alloy strip automatically dissolves and breaks, triggering the shielding structure to extend, exposing the heat dissipation mesh, and achieving rapid heat dissipation. This design not only effectively reduces the temperature inside the junction box, but also significantly prolongs the time for the equipment to spontaneously combust due to excessive temperature, which wins precious time for timely maintenance, thereby greatly extending the service life of the junction box and the entire power system.
[0021] The present application provides that, through the outflow of fluorescent liquid and the design of the seepage hole, the temperature-sensitive color-changing panel can also glow at night, providing a clear fault indication for night workers. This function is particularly important at night or in a dimly lit environment, ensuring that power faults can be discovered and handled in a timely manner, further improving the safety of the power system.
[0022] In summary, through innovative temperature-sensitive color-changing materials and low-melting-point alloy technology, real-time monitoring and early warning of the internal temperature of the junction box can be achieved, and through clever shielding structure and heat dissipation design, the internal temperature of the junction box can be effectively reduced, its service life can be extended, and the safe operation of the power system can be ensured. Combined with the nighttime fluorescent early warning mechanism, a comprehensive and multi-level fault early warning system has been formed. This comprehensive early warning method not only improves the accuracy and reliability of the early warning, but also provides multiple guarantees for the safe operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is an overall schematic diagram of a power fault early warning device based on a temperature-sensitive color-changing material according to the present invention;
[0024] Figure 2 This is a schematic diagram of the interior of a power failure early warning device based on a temperature-sensitive color-changing material according to the present invention;
[0025] Figure 3 It is a side cross-sectional schematic diagram of a power fault early warning device based on a temperature-sensitive color-changing material of the present invention;
[0026] Figure 4 This is an enlarged schematic diagram of point A of the present invention;
[0027] Figure 5 It is an enlarged schematic side view of the linkage structure of the present invention;
[0028] Figure 6 It is a side cross-sectional schematic diagram of the shielding structure of the present invention;
[0029] Figure 7 It is a top cross-sectional schematic diagram of the cover plate of the present invention;
[0030] Figure 8 This is a schematic diagram of ventilation when an electric fault warning device based on a temperature-sensitive color-changing material overheats in the present invention.
[0031] Numbers in the figure: 1. Line connection box; 11. Connection slot; 12. Active chamber; 121. Connection block; 122. Limit spring; 123. Through hole; 101. Heat dissipation mesh; 2. Mounting base; 3. Cable; 4. Cover plate; 41. Bottom limit slot; 42. Linkage structure; 421. Moving slot; 422. Telescopic rod; 4221. Limit ring; 423. Limit spring; 424. Ejector pin; 425. Connecting hole; 43. Fluorescent structure; 431. Storage chamber; 432. Expansion storage bag; 433. Seepage hole; 5. Cable connector; 6. Temperature-sensitive color-changing panel; 7. Shielding structure; 711. Connection plate one; 712. Connection plate two; 713. L plate; 72. Elastic support structure; 721. Spring slot; 722. Telescopic spring; 723. Support column; 8. Low-melting-point alloy strip; 9. Wiring terminal. DETAILED DESCRIPTION
[0032] Embodiment 1, by Figure 1-8A power fault warning device based on a temperature-sensitive color-changing material is provided, comprising a plurality of cables 3 and a mounting base 2 which is inserted into a line connection box 1 and threadedly installed. A mounting frame is fixed on the top of the mounting base 2 in the line connection box 1, and a wiring terminal 9 is fixed in the mounting frame. A plurality of cable holes are provided at the front and rear of the mounting base 2, and a cable connector 5 is installed in each cable hole. Each cable 3 is inserted into the line connection box 1 through the cable connector 5 and connected to the wiring terminal 9. A cover plate 4 is provided on the top of the mounting base 2, and the front part of the cover plate 4 is hinged to the mounting base 2. A slot is provided in the middle of the plate 4, in which a temperature-sensitive color-changing panel 6 is fixed, and movable chambers 12 are provided through the front and rear sides of both sides of the connection box 1, and a connecting slot 11 is provided between the middle of the two movable chambers 12 and the inside of the mounting base 2, and two groups of heat dissipation mesh holes 101 are provided on the left and right ends of the connection box 1 and are connected to the movable chambers 12, and two groups of shielding structures 7 are slidably connected in the two movable chambers 12, and bottom limiting grooves 41 are provided between the rear sides of both sides of the bottom of the cover plate 4 and the two movable chambers 12, and a limiting groove is provided on the front side of the top of the bottom limiting groove 41;
[0033] When multiple cables 3 are connected, the external multiple cables 3 are connected to the line connection box 1 through the cable connector 5, and installed in the wiring terminal 9 to realize electrical connection. When the internal wiring terminal 9 has poor contact, the internal temperature of the line connection box 1 rises and is transmitted to the temperature-sensitive color-changing panel 6. The outer surface of the temperature-sensitive color-changing panel 6 is coated with a temperature-sensitive color-changing powder coating. As the temperature rises to the set temperature value, the surface color of the temperature-sensitive color-changing panel 6 changes, so that it is convenient for the staff to timely discover and inspect and repair through inspections and camera monitoring. As the temperature continues to rise, when its temperature value exceeds 80 degrees, the low-melting-point alloy strips 8 at the connection grooves 11 on the left and right sides of the line connection box 1 begin to dissolve and break, and the shielding structure 7 in the left and right active chambers 12 extends, exposing two heat dissipation mesh holes 101 that are connected to the inside of the line connection box 1 for heat dissipation, thereby reducing the internal temperature of the line connection box 1 and prolonging the time of spontaneous combustion caused by excessive temperature, so as to timely overhaul.
[0034] In the present embodiment, each group of shielding structures 7 includes a linkage baffle and a driven baffle, which are symmetrically arranged in the active chamber 12 to block the two groups of heat dissipation mesh holes 101, and the opposite ends of the two are fixedly connected with a low-melting-point alloy strip 8 for limiting. The linkage baffle and the driven baffle are fixed with a connecting plate 1 711 and a connecting plate 2 712 on the upper and lower sides to contact the upper and lower ends inside the active chamber 12, wherein the upper end of the connecting plate 2 712 of the linkage baffle is fixed with an L plate 713, and an elastic supporting structure 72 is arranged on the right side of the top of the linkage baffle, and the L plate 713 enters the cover plate 4 through the bottom limiting groove 41 and cooperates with the limiting groove for limiting, and four connecting blocks 121 are fixed on the upper and lower sides inside the active chamber 12, and the four connecting blocks 121 are fixed with limiting springs 122, which are respectively connected with the four connecting plates 2 712 at the upper and lower positions of the linkage baffle and the driven baffle, and a through hole 123 is opened through the connecting block 121 position near the linkage plate at the top of the connecting groove 11.
[0035] Specifically, in the initial state, a group of linkage baffles and driven baffles of the shielding structure 7 are connected and retracted in the active chamber 12 through the low-melting-point alloy strip 8, and the upper and lower connected connecting plates 712 move to squeeze and retract the limit springs 122 to store force, and the L plate 713 moves in the bottom limit groove 41 and is inserted into the limit groove to limit the cover plate 4, and the linkage baffle and the driven baffle block and seal the two heat dissipation mesh holes 101 on the side of the line connection box 1. At this time, the elastic support structure 72 is in a contracted state. When the low-melting-point alloy strip 8 connected to the linkage baffle and the driven baffle is dissolved and broken, the upper and lower limit springs 122 of the two rebound and extend, driving the linkage baffle and the driven baffle to move and extend in the active chamber 12 in opposite directions, exposing the two heat dissipation mesh holes 101 and connecting with the inside of the line connection box 1 for heat dissipation, thereby reducing the internal temperature of the line connection box 1 and prolonging the time of spontaneous combustion caused by excessive temperature, so as to timely repair it.
[0036] The temperature-sensitive color-changing panel 6 comprises a polyvinyl chloride resin sheet, and the outer surface of the polyvinyl chloride resin sheet is coated with a temperature-sensitive color-changing powder coating.
[0037] The low melting point alloy strip 8 is made of tin-bismuth alloy.
[0038] In this embodiment, the elastic support structure 72 includes a spring groove 721 opened on one side of the top of the linkage plate, a telescopic spring 722 is fixed at the bottom of the spring groove 721, a support column 723 is fixed at the top of the telescopic spring 722, the outer diameter of the support column 723 is smaller than the inner diameter of the through hole 123, and the support column 723 extends through the through hole 123 to lift the cover plate 4.
[0039] Specifically, when the linkage baffle and the driven baffle are displaced, the connecting plate 2 7127 moves at the same time to drive the L plate 713 to disengage from the limiting groove, so that the cover plate 4 can be flipped, and when the elastic support structure 72 moves to the position of the through hole 123, the telescopic spring 722 in a compressed state extends out, driving the support column 723 to extend out of the spring groove 721 and the through hole 123, slightly lifting the cover plate 4, so that the top of the line connection box 1 is circulated with the external air, further assisting heat dissipation and reducing the internal temperature of the line connection box 1.
[0040] Embodiment 2, based on embodiment 1, linkage structures 42 are provided inside both sides of the cover plate 4 to cooperate with two groups of shielding structures 7, and two fluorescent structures 43 are provided on both sides of the cover plate 4 near the temperature-sensitive color-changing panel 6, and the two fluorescent structures 43 are connected and cooperated with the two linkage structures 42.
[0041] When the support column 723 elastically and quickly extends into the through hole 123, it collides and displaces with the linkage structure 42, so that the linkage structure 42 contacts and cooperates with the fluorescent structure 43, causing the fluorescent liquid to flow out to the surface of the temperature-sensitive color-changing panel 6. The surface of the temperature-sensitive color-changing panel 6 can also glow at night, so that the night staff can also discover it in time and the junction box failure can be repaired in time.
[0042] In this embodiment, the linkage structure 42 includes a movable groove 421 opened inside the cover plate 4, the movable groove 421 and the through hole 123 are connected through each other, a telescopic rod 422 is slidably connected in the movable groove 421, a limiting ring 4221 is fixed in the middle of the telescopic rod 422, and a limiting spring 423 is sleeved on the outside of the telescopic rod 422, between the limiting ring 4221 and the rear bottom of the movable groove 421, a connecting hole 425 is opened between the movable groove 421 and the fluorescent structure 43, and a ejector pin 424 is fixed at the end of the telescopic rod 422, and a part of the ejector pin 424 passes through the connecting hole 425 and enters into the fluorescent structure 43.
[0043] Specifically, the through hole 123 is connected to the movable groove 421 of the linkage structure 42. When the support column 723 elastically and quickly extends into the through hole 123 and the movable groove 421, the support column 723 hits the telescopic rod 422. The end of the telescopic rod 422 is arc-shaped and moves backward when hit and squeezed, driving the limit ring 4221 to squeeze the limit spring 423, and the ejector pin 424 completely enters the storage chamber 431 and contacts the expansion storage bag 432, and the expansion storage bag 432 is punctured and exploded by the ejector pin 424.
[0044] In this embodiment, the fluorescent structure 43 includes a storage chamber 431 opened inside the cover plate 4, the storage chamber 431 is connected to the movable groove 421 through a connecting hole 425, an expansion storage bag 432 is fixed to the rear of the storage chamber 431, and a plurality of seepage holes 433 are opened at the side end of the storage chamber 431 near the temperature-sensitive color-changing panel 6 to communicate with the temperature-sensitive color-changing panel 6, the storage chamber 431 is narrow in front and wide in the back, and the rear wide part is inclined toward the temperature-sensitive color-changing panel 6, and the plurality of seepage holes 433 are arranged to be inclined forward.
[0045] The expansion storage bag 432 is an expansion film bag filled with transparent fluorescent liquid, and there is a distance between the expansion storage bag 432 and the ejector pin 424 .
[0046] Specifically, the expanded storage bag 432 is punctured and exploded by the ejector pin 424, and the fluorescent liquid stored inside flows out and fills the storage chamber 431. Since the cover plate 4 is in an inclined state at this time, the fluorescent liquid flows downward and penetrates into the surface of the temperature-sensitive color-changing panel 6 through multiple inclined seepage holes 433, so that the surface of the temperature-sensitive color-changing panel 6 can also glow at night, so that the night staff can also discover it in time and the junction box failure can be repaired in time.
[0047] Working principle:
[0048] In the initial state, a set of linkage baffles and driven baffles of the shielding structure 7 are connected and contracted in the active chamber 12 through the low melting point alloy strip 8, and the upper and lower connected connecting plate 2 712 moves to squeeze and extend the limit spring 122 to store force, and the L plate 713 moves in the bottom limit groove 41 and is inserted into the limit groove to limit the cover plate 4, and the linkage baffle and the driven baffle block and seal the two heat dissipation mesh holes 101 on the side of the line connection box 1. At this time, the elastic support structure 72 is in a contracted state;
[0049] When multiple cables 3 are connected, multiple external cables 3 are connected to the line connection box 1 through the cable connector 5, and installed in the wiring terminal 9 to achieve electrical connection;
[0050] When the internal wiring terminal 9 has poor contact, the internal temperature of the line connection box 1 rises and is transmitted to the temperature-sensitive color-changing panel 6. The outer surface of the temperature-sensitive color-changing panel 6 is coated with a temperature-sensitive color-changing powder coating. When the temperature rises to the set temperature value, the surface color of the temperature-sensitive color-changing panel 6 changes, so that the staff can find out in time through inspection and camera monitoring for inspection and maintenance;
[0051] Furthermore, as the temperature continues to rise, when the temperature value exceeds 80 degrees, the low melting point alloy strips 8 at the connection grooves 11 on the left and right sides of the line connection box 1 begin to dissolve and break, and the shielding structures 7 in the left and right active chambers 12 extend out;
[0052] When the low melting point alloy strip 8 connecting the linkage baffle and the driven baffle is dissolved and broken, the upper and lower limit springs 122 of the two rebound and extend, driving the linkage baffle and the driven baffle to move and extend in the opposite direction in the active chamber 12, exposing two heat dissipation mesh holes 101 connected to the inside of the line connection box 1 for heat dissipation, reducing the internal temperature of the line connection box 1, and prolonging the time of spontaneous combustion caused by excessive temperature, so as to timely overhaul;
[0053] When the linkage baffle and the driven baffle are displaced, the second connecting plate 7127 moves to drive the L plate 713 out of the limiting groove, so that the cover plate 4 can be flipped, and when the elastic support structure 72 moves to the position of the through hole 123, the telescopic spring 722 in the compressed state extends out, driving the support column 723 to extend out of the spring groove 721 and the through hole 123, and slightly lifting the cover plate 4, so that the top of the line connection box 1 is circulated with the external air, further assisting heat dissipation and reducing the internal temperature of the line connection box 1;
[0054] The through hole 123 is connected to the movable groove 421 of the linkage structure 42. When the support column 723 elastically and quickly extends into the through hole 123 and the movable groove 421, the support column 723 hits the telescopic rod 422. The end of the telescopic rod 422 is arc-shaped. When it is hit and squeezed, it moves backward, driving the limit ring 4221 to squeeze the limit spring 423. The ejector pin 424 completely enters the storage chamber 431 and contacts the expansion storage bag 432. The expansion storage bag 432 is punctured and exploded by the ejector pin 424, and the fluorescent liquid stored inside flows out and fills the storage chamber 431. Since the cover plate 4 is in an inclined state at this time, the fluorescent liquid flows toward a lower place and penetrates into the surface of the temperature-sensitive color-changing panel 6 through multiple inclined seepage holes 433, so that the surface of the temperature-sensitive color-changing panel 6 can also glow at night, so that the night staff can also find it in time and the junction box failure can be repaired in time.
Claims
1. A power fault warning device based on a temperature-sensitive color-changing material, comprising a plurality of cables (3) and a mounting base (2) inserted into a line connection box (1) and threadedly installed, wherein a mounting frame is fixed on the top of the mounting base (2) in the line connection box (1), and a wiring terminal (9) is fixed in the mounting frame, and a plurality of cable holes are opened at the front and rear of the mounting base (2), and a cable connector (5) is installed in each cable hole, and each cable (3) is inserted into the line connection box (1) through the cable connector (5) and connected to the wiring terminal (9), characterized in that: A cover plate (4) is arranged on the top of the mounting base (2), the front of the cover plate (4) is hinged to the mounting base (2), a slot is provided in the middle of the cover plate (4), a temperature-sensitive color-changing panel (6) is fixed in the slot, active chambers (12) are provided through the front and rear sides of both sides of the connection box (1), a connection slot (11) is provided between the middle of the two active chambers (12) and the inside of the mounting base (2), and two groups of heat dissipation mesh holes (101) are provided on both left and right side ends of the connection box (1) and are connected to the active chambers (12), two groups of shielding structures (7) are slidably connected in the two active chambers (12), bottom limiting slots (41) are provided between the rear sides of the bottom of the cover plate (4) and the two active chambers (12), and a limiting slot is provided on the front side of the top of the bottom limiting slot (41); Each group of shielding structures (7) comprises a linkage baffle and a driven baffle, wherein the linkage baffle and the driven baffle are symmetrically arranged in the active chamber (12) to block the two groups of heat dissipation mesh holes (101), and the opposite ends of the two are fixedly connected with a low melting point alloy strip (8) for limiting, and the linkage baffle and the driven baffle are fixed with a connecting plate 1 (711) and a connecting plate 2 (712) on both upper and lower sides to contact the upper and lower ends of the active chamber (12), wherein the upper end of the connecting plate 2 (712) of the linkage baffle is fixed with an L plate (713), and the top right side of the linkage baffle is provided An elastic supporting structure (72) is provided, and an L plate (713) enters the cover plate (4) through a bottom limiting groove (41) and cooperates with the limiting groove for limiting. Four connecting blocks (121) are fixed on the upper and lower sides of the movable chamber (12). The four connecting blocks (121) are all fixed with limiting springs (122) and are respectively connected to four connecting plates (712) at the upper and lower positions of the linkage baffle plate and the driven baffle plate. A through hole (123) is opened at the top of the connecting groove (11) near the connecting block (121) of the linkage plate.
2. The power failure warning device based on temperature-sensitive color-changing materials according to claim 1 is characterized in that: The temperature-sensitive color-changing panel (6) comprises a polyvinyl chloride resin sheet, and the outer surface of the polyvinyl chloride resin sheet is coated with a temperature-sensitive color-changing powder coating.
3. The power failure warning device based on temperature-sensitive color-changing materials according to claim 1 is characterized in that: The elastic support structure (72) comprises a spring groove (721) provided on one side of the top of the linkage plate, a telescopic spring (722) being fixed at the bottom of the spring groove (721), a support column (723) being fixed at the top of the telescopic spring (722), and an outer diameter of the support column (723) being smaller than an inner diameter of the through hole (123).
4. The power failure warning device based on temperature-sensitive color-changing materials according to claim 3 is characterized in that: The support column (723) extends out through the through hole (123) to lift up the cover plate (4).
5. The power failure warning device based on temperature-sensitive color-changing materials according to claim 1 is characterized in that: Both sides of the cover plate (4) are internally provided with linkage structures (42) that cooperate with the two sets of shielding structures (7), and two fluorescent structures (43) are provided on both sides of the cover plate (4) near the temperature-sensitive color-changing panel (6), and the two fluorescent structures (43) are connected and cooperate with the two linkage structures (42).
6. The power failure warning device based on temperature-sensitive color-changing materials according to claim 5 is characterized in that: The linkage structure (42) comprises a moving groove (421) provided inside the cover plate (4), the moving groove (421) and the through hole (123) being connected through each other, a telescopic rod (422) being slidably connected in the moving groove (421), a limiting ring (4221) being fixed in the middle of the telescopic rod (422), a limiting spring (423) being sleeved outside the telescopic rod (422) and located between the limiting ring (4221) and the rear bottom of the moving groove (421), a connecting hole (425) being provided between the moving groove (421) and the fluorescent structure (43), and a ejector pin (424) being fixed at the end of the telescopic rod (422), and a part of the ejector pin (424) passing through the connecting hole (425) and entering into the fluorescent structure (43).
7. The power failure warning device based on temperature-sensitive color-changing materials according to claim 6 is characterized in that: The fluorescent structure (43) comprises a storage chamber (431) opened inside the cover plate (4), the storage chamber (431) being connected to the movable groove (421) via a connecting hole (425), an expansion storage bag (432) being fixed to the rear of the storage chamber (431), and a plurality of liquid seepage holes (433) being opened near the side end of the temperature-sensitive color-changing panel (6) in communication with the temperature-sensitive color-changing panel (6).
8. The power failure warning device based on temperature-sensitive color-changing materials according to claim 7 is characterized in that: The expansion storage bag (432) is an expansion film bag filled with transparent fluorescent liquid, and there is a distance between the expansion storage bag (432) and the ejector pin (424).
9. The power failure warning device based on temperature-sensitive color-changing materials according to claim 7, characterized in that: The storage chamber (431) is narrow at the front and wide at the rear, and the wide rear portion is inclined toward the temperature-sensitive color-changing panel (6).
10. The power failure warning device based on temperature-sensitive color-changing materials according to claim 7, characterized in that: The plurality of liquid seepage holes (433) are arranged to be inclined forward.