A secondary circuit live part error touch isolation device

Abstract

The application discloses a secondary circuit live part anti-mis-touch isolation device and belongs to the field of substation secondary circuit anti-mis-touch equipment. In order to solve the problems of low strength, easy deformation and cracking, unstable insulation, short service life, difficult indoor and outdoor quick detection after damage, easy personnel mis-touch electric shock, no reinforcing structure for cracking, easy crack expansion, insulation failure leading to terminal discharge and creepage, temperature rise, and easy electric shock and short circuit accidents of the secondary circuit live part anti-mis-touch isolation device, the application comprises a guide rail, the inner wall of the guide rail is connected with a terminal row through clamping, the inner wall of the guide rail is also connected with a marker clamp through clamping, and the side of the terminal row is inserted with a partition. The application forms a reinforcing net through longitudinal and transverse staggered sensing strips and penetrating tension bars, greatly improves the strength, deformation resistance and service life of the device, realizes indoor and outdoor damage quick detection and crack accurate positioning through light emission, and delays insulation failure through terminal temperature rise triggered pneumatic contraction of the crack.

Description

Technical Field

[0001] This invention relates to the technical field of anti-accidental contact equipment for secondary circuits in substations, and more specifically, to an isolation device for preventing accidental contact with energized parts of secondary circuits. Background Technology

[0002] Secondary circuit live parts anti-accidental contact isolation devices refer to physical or electrical safety protection devices used to isolate or close live parts of secondary circuits in operation, such as terminal blocks, relays, pressure plates, wiring, etc., to prevent personnel from accidentally touching or contacting them, which could lead to electric shock or misoperation. They are part of the "anti-misoperation" measures for secondary systems.

[0003] Workers install the plastic cover on the upper surface of the terminal block using insulating screws to achieve isolation.

[0004] Existing anti-accidental contact isolation devices for live parts of secondary circuits have low structural strength and are prone to cracking due to vibration, temperature changes, and aging. They have short service life and cannot stably achieve insulation isolation. When damaged, it is difficult to quickly determine their condition in well-lit indoor environments, which can easily lead to accidental electric shock. In low-light outdoor environments, it is even more difficult to detect damage and deformation in time, resulting in poor insulation performance. At the same time, there is no built-in reinforcement structure after the isolation device cracks, which can not accurately locate the crack and cause the crack to continue to expand, resulting in low fault detection efficiency. After insulation failure, the terminals are prone to partial discharge and creepage, and the temperature rises rapidly, causing the insulation performance to degrade rapidly or even fail completely, which can easily lead to safety accidents such as electric shock and short circuit.

[0005] To address the above issues, a device for preventing accidental contact with energized parts of a secondary circuit is proposed. Summary of the Invention

[0006] To address the aforementioned problems in existing technologies, the present invention aims to provide an isolation device for preventing accidental contact with live parts of secondary circuits. Using this device solves the problems described above, such as low strength, susceptibility to deformation and cracking, unstable insulation, and short lifespan of existing isolation devices for preventing accidental contact with live parts of secondary circuits; difficulty in rapid indoor and outdoor detection after damage, easily leading to accidental electric shock; lack of reinforcing structures for cracks, easy expansion of cracks, and insulation failure causing terminal discharge creepage and temperature rise, which can easily lead to electric shock and short circuit accidents.

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows: a secondary circuit live part anti-accidental contact isolation device, including a guide rail, a terminal block is snapped into the inner wall of the guide rail, a marking clip is also snapped into the inner wall of the guide rail, a spacer is inserted into one side of the terminal block, wires are inserted into both ends of the opening of the terminal block, an isolation adjustment component is snapped into the end of the guide rail, an abnormal feedback component is fixedly connected to the inner wall of the isolation adjustment component, and an air cavity gathering component is provided on the top of the isolation adjustment component.

[0008] Furthermore, the isolation adjustment assembly includes an isolation frame that is snapped onto both ends of the guide rail. The isolation frame is disposed on the outer surface of the terminal block, and ear blocks are fixedly connected to the top two ends of the isolation frame.

[0009] Furthermore, crossbeams are fixedly connected to the top two sides of the isolation frame, and multiple energy-absorbing pads are fixedly connected to the bottom of the multiple crossbeams, with the bottom of the multiple energy-absorbing pads contacting the top of the partition.

[0010] Furthermore, block-shaped friction elements are fixedly connected to the bottom of both ends of the isolation frame, and the top of the block-shaped friction elements contacts the bottom surface of the end of the guide rail.

[0011] Furthermore, the abnormal feedback component includes multiple edge sensing strips fixedly connected to the inner wall edge of the isolation frame, with horizontal sensing strips provided at the ends of the multiple edge sensing strips. The horizontal sensing strips are fixedly connected to the inner wall of the isolation frame, and a through-bracing strip is provided through the interior of each edge sensing strip. The through-bracing strip is provided through the axis of the edge sensing strip.

[0012] Furthermore, a force-luminescent element is also provided inside the edge sensing strip. The force-luminescent element fills the interior of the edge sensing strip and is disposed on the outer surface of the through-bracing strip. Both the edge sensing strip and the horizontal sensing strip are provided with through-bracing strips and force-luminescent elements inside. Multiple through-bracing strips provided inside the edge sensing strip and the horizontal sensing strip are connected in sequence.

[0013] Furthermore, the air chamber gathering assembly includes an expansion chamber fixedly connected to the inside of the top of the isolation frame, and a guide cylinder cavity is fixedly connected to the end opening of the expansion chamber. The guide cylinder cavity has grooves at both ends of its inner wall.

[0014] Furthermore, an elastic frame is fixedly connected to the bottom of the guide cylinder cavity, and a fixed baffle is fixedly connected to the top of the elastic frame. The fixed baffle is slidably connected to the guide cylinder cavity.

[0015] Furthermore, a push rod is provided through the axis of the fixed baffle, the bottom of the push rod is provided through the bottom of the top of the isolation frame, and a slider is movably connected to the top of the push rod, the slider being provided at the output end of the expansion chamber.

[0016] Furthermore, a protrusion is fixedly connected to the end of the slider, and the protrusion is slidably connected to the groove. A hook is fixedly connected to the bottom of the push rod, and the hook is located below the edge sensing strip. A friction protrusion is fixedly connected to the inner wall of the hook.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes an isolation frame combined with edge sensing strips and horizontal sensing strips to form an integrated reinforcement network. The edge and horizontal sensing strips interweave to form a sensing strip network, which, together with the rigid reinforcement of internal through-ribs, significantly improves the resistance to vibration and temperature deformation. The energy-absorbing pads of the crossbeams and the block friction components of the guide rails work together to reduce assembly play and enhance stability, thereby extending the service life of the terminal block isolation frame insulation cover and reducing the deformation of the insulation cover. This fundamentally solves the problems of low strength, easy aging, deformation and cracking, unstable insulation and short service life of traditional devices, and provides long-term stability for isolation and protection.

[0018] By utilizing the mechanoluminescence properties of the anomaly feedback component, damage detection can be adapted to different lighting environments. In well-lit indoor environments, when an insulating cover ages, deforms, or cracks after prolonged use, the condition of the insulating cover can be quickly determined by checking for breaks or deformations in the edge and horizontal sensor strips. This allows for rapid identification of latent damage such as aging and minor cracks. In poor outdoor lighting conditions, when the insulating cover cracks or deforms, the sensor strips will change synchronously. The mechanoluminescent material inside the strips will trigger light when the sensor strips bend or break. Workers can immediately spot the damaged or deformed locations in low light conditions and directly assess whether to replace the insulating cover. If it is determined to still be within safe operating limits, the number of light-emitting points can be recorded. During subsequent maintenance, the number of light-emitting points can be compared to determine if any new damaged or deformed points have been added, and then replacement can be determined. This significantly improves troubleshooting efficiency and further enhances worker safety.

[0019] By setting edge sensing strips and through-stretcher strips within the horizontal sensing strips to form a mesh reinforcement layer, the overall strength of the insulation cover can be enhanced under normal conditions. When the device cracks, it can provide tensile restraint to the cracked area, preventing the crack from spreading. At the same time, only the outer plastic layer of the sensing strip breaks, while the internal through-stretcher strip does not break but only deforms. This causes the mechanoluminescent material to show only localized luminescence changes, and the area without light is the actual location of the crack, enabling precise fault location. This solves the pain points of traditional devices that have no reinforcement when cracking, are prone to crack expansion, and have rapid insulation failure, thus slowing down the rate of insulation performance decay and achieving the effect of rapid crack detection.

[0020] By setting up a gas chamber converging component, when the insulation performance of the insulating cover decreases due to cracks or deformation, partial discharge and creepage phenomena will occur at the terminals, resulting in additional losses and a rapid increase in terminal temperature. At this time, the expansion chamber at the top of the insulating cover will expand due to heat, pushing the slider to move and releasing the limit of the elastic rod. The elastic rod will push upward under the action of elasticity, pulling the through-rib strip inside the sensing strip, causing the mesh sensing strip to contract towards the center, thereby constraining the insulating cover, reducing the crack width, preventing the crack from expanding further, effectively alleviating the problem of rapid decline or even complete failure of the insulation performance of the insulating cover, forming emergency protection in the sudden stage of fault, avoiding large-area exposure of live parts, reserving time for maintenance and replacement, and significantly reducing the probability of electric shock and short circuit accidents.

[0021] By setting up an isolation frame and partitions to form a protective enclosure, it can not only physically isolate live parts to prevent accidental contact by personnel, but also isolate dust, moisture and metal debris to prevent flashover, wet flashover and short circuit faults. It can ensure the safety of secondary circuits from multiple dimensions of protection, detection and emergency response, and completely solve the core problems of traditional devices that are prone to terminal discharge creepage, temperature rise and electric shock short circuit due to insulation failure. Attached Figure Description

[0022] Figure 1 This is a first-view three-dimensional structural diagram of the anti-accidental contact isolation device for the energized part of the secondary circuit of the present invention; Figure 2 This is a two-dimensional structural diagram of the anti-accidental contact isolation device for the energized part of the secondary circuit of the present invention from a second perspective. Figure 3 This is a three-dimensional structural diagram of the guide rail and terminal block of the present invention. Figure 4 This is a three-dimensional structural diagram of the isolation frame and edge sensing strip of the present invention. Figure 5 This is a schematic diagram of the three-dimensional structure of the crossbeam and energy-absorbing pad of the present invention; Figure 6 for Figure 5 Enlarged view of A in the middle; Figure 7 This is a schematic diagram of the three-dimensional structure of the present invention, showing the horizontally arranged sensing strip and the mechanical light emitter working together. Figure 8 This is a three-dimensional structural diagram of the combination of the mechanoluminescent body and the through-bracing strip of the present invention; Figure 9 This is a three-dimensional structural diagram of the expansion chamber and guide cylinder cavity of the present invention. Figure 10 This is a cross-sectional view of the air cavity gathering component of the present invention; Figure 11 This is a three-dimensional structural diagram of the elastic frame and the fixed baffle of the present invention. In the diagram: 1. Guide rail; 2. Marker clip; 3. Terminal block; 4. Wire; 5. Partition; 6. Isolation adjustment assembly; 61. Isolation frame; 62. Ear block; 63. Crossbeam; 64. Energy-absorbing pad; 65. Block friction component; 7. Abnormal feedback assembly; 71. Edge sensing strip; 72. Horizontal sensing strip; 73. Mechanoluminescent body; 74. Through-through tie rod; 8. Air chamber gathering assembly; 81. Expansion chamber; 82. Guide cylinder cavity; 83. Slide groove; 84. Protrusion; 85. Slider; 86. Elastic frame; 87. Fixed baffle; 88. Push rod; 89. Hook; 810. Friction protrusion. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] To address the technical problems of isolation devices for preventing accidental contact in energized secondary circuits, such as low strength, susceptibility to deformation and cracking, unstable insulation, and short lifespan; difficulty in rapid indoor and outdoor detection after damage, easily leading to accidental electric shock; lack of reinforcement structures for cracking, easy expansion of cracks, and insulation failure causing terminal discharge creepage and temperature rise, which can easily lead to electric shock and short circuit accidents, such as... Figures 1-11 As shown, the following preferred technical solutions are provided: like Figures 1-4 As shown, a secondary circuit live part anti-accidental contact isolation device includes a guide rail 1. The guide rail 1 serves as the basic load-bearing component of the device, providing a stable installation base and positioning constraints for the overall equipment. It bears the structural load of various isolation, detection, and protection components on the upper part, ensuring the neatness of the assembly and the stability of operation of the entire isolation device. It provides basic support for the isolation and protection operation of the live parts of the secondary circuit. The inner wall of the guide rail 1 is clamped with a terminal block 3. The terminal block 3 is the core basic component for secondary circuit power transmission and signal connection. It can realize the neat connection of multiple circuits and circuit conduction. It is the core carrier for secondary circuit live operation. The inner wall of the guide rail 1 is also clamped with a marking clip 2. The marking clip 2 is used to classify and mark the wiring circuit and wiring point of the terminal block 3, clearly distinguish different secondary circuit lines, facilitate the operator to quickly identify the line information, and avoid the risk of wiring confusion and maintenance misoperation. A partition 5 is inserted into one side of the terminal block 3. The partition 5 is used to physically separate and electrically insulate each wiring position of the terminal block 3, realize isolation and protection between independent circuits, effectively avoid the problems of cross-current, short circuit and creepage between circuits, and reduce the safety hazards of live parts of the secondary circuit. Wires 4 are inserted into both ends of the opening of the terminal block 3. Wires 4 serve as the medium for transmitting electrical energy and signals, realize the circuit connection of the secondary circuit, and ensure the normal transmission and operation of power signals and control signals. An isolation adjustment component 6 is snapped into the end of the guide rail 1. The isolation adjustment component 6 is the core component of the device for preventing accidental contact and the self-adaptive fixed installation structure. It covers the outside of the terminal block 3 to form an insulating protective barrier, prevents operators from accidentally touching live parts, reduces the risk of electric shock, isolates dust, moisture and metal debris, and reduces short circuits and grounding faults caused by flashover, wet flashover or foreign objects. An abnormal feedback component 7 is fixedly connected to the inner wall of the isolation adjustment component 6. The abnormal feedback component 7 is the core structure for fault detection of the device. Relying on the crisscrossing sensor network structure, it takes into account both the reinforcement of the isolation insulation structure and the detection of damage and deformation. It can adapt to different indoor and outdoor lighting environments and realize the monitoring and feedback of the live isolation status of the terminal block 3 under different environments. It can accurately identify the location of abnormal faults such as aging, cracking, and deformation of the insulation isolation cover in real time through light, and determine whether the isolation effect and the isolation device are damaged or failed. An air cavity gathering component 8 is set on the top of the isolation adjustment component 6. The air cavity gathering component 8 relies on the principle of thermal expansion and pneumatic linkage. After the insulation fails, the terminal will have partial discharge or creepage effect, generating additional losses and causing the terminal temperature to rise rapidly. Through the mechanical linkage structure, it realizes the adaptive constraint after the insulation isolation structure is damaged, delays the failure speed of the insulation protection performance, realizes the fault emergency protection effect, provides the operator with time for maintenance and replacement, and reduces the impact on the equipment under the state of insulation failure. The isolation adjustment component 6 works with the spacer 5 to form a wrap-around insulation protection on the outer surface of the terminal block 3, preventing workers from accidentally touching live parts when inspecting other terminal components, thus reducing the risk of electric shock. At the same time, the stable wrap-around insulation cover can isolate dust, moisture, and metal debris inside the cabinet and in the environment, reducing the occurrence of short circuits and grounding faults in the terminal block 3, improving the circuit continuity of the secondary circuit of the terminal block 3 in daily use, ensuring the normal transmission and operation of power signals and control signals, improving stability, and reducing safety hazards. The anomaly feedback component 7 forms a crisscrossing integrated sensing mesh structure within the isolation adjustment component 6. This mesh structure comprehensively reinforces the strength of the anti-accidental touch isolation device, enhancing its stability and reducing the impact of vibration, temperature differences, and other changes. It effectively mitigates loosening and deformation issues that occur during long-term use, extending the overall lifespan of the device and ensuring long-term isolation protection. When the anti-accidental touch isolation device cracks, the internal mesh sensing reinforcement mesh of the anomaly feedback component 7 cracks simultaneously at the location of the crack, leading to the breakage of the sensing mesh. The device emits an internal light source warning. In well-lit indoor work environments, insulation covers are prone to aging, deformation, and minor cracks after long-term use. Such damage can directly lead to a decline in insulation protection performance and pose a risk of accidental contact by workers. However, relying on the sensing network structure of the abnormal feedback component 7, workers can intuitively judge the integrity and shape of the sensing network, quickly identify whether there are abnormalities such as breakage, twisting, or deformation on the sensing network, and thus accurately determine the integrity of the anti-accidental contact isolation device. This allows for timely detection of potential insulation protection failures, early avoidance of accidental contact safety accidents at live parts of the secondary circuit, and ensures the safety of indoor equipment operation. When operating outdoors in poor lighting and limited visibility conditions, the anti-accidental contact isolation device is prone to cracking and deformation due to environmental factors. The sensing network structure in the corresponding abnormality feedback component 7 will simultaneously bend and fracture. Because the sensing network structure is filled with luminescent material, when the sensing network structure deforms or fractures, the luminescent material at the corresponding fault location will be triggered and emit light. This allows operators to quickly locate the specific points of cracking, damage, or deformation of the anti-accidental contact isolation device in low-light environments, accurately identifying potential insulation performance degradation. Furthermore, operators can classify the fault based on its actual condition. If the damage is minor and the anti-accidental contact isolation device is still within safe operating range, the current number of luminescent points can be recorded. During subsequent periodic maintenance, the change in the number of luminescent points can be compared to determine if any new cracks, damage, or deformation points have been added, thus comprehensively assessing whether the insulation cover needs replacement. If the damage exceeds the standard and the insulation performance is substandard, the insulation cover can be replaced promptly. Real-time monitoring of the insulation performance degradation of the insulation cover comprehensively enhances the safety of operators working outdoors.

[0025] The gas cavity gathering component 8 is used when the insulation performance of the anti-misoperation isolation device drops significantly due to cracking or deformation. This causes partial discharge and creepage at the live parts of the terminal block 3, leading to abnormal losses in the secondary circuit and a rapid increase in terminal temperature. The gas cavity gathering component 8 collects the temperature rise and applies it to the internal gas, causing the expanding gas to generate a driving force. This force, combined with elasticity, pulls up the sensing net structure set in the abnormal feedback component 7, allowing it to converge like a fishing net. The sensing net structure then contracts and gathers towards the center, tightening and constraining the surface of the cracked or deformed anti-misoperation isolation device. This reduces the width of the cracks, preventing them from expanding further and effectively mitigating the problem of rapid insulation degradation or even complete failure of the anti-misoperation isolation device. It provides reliable emergency protection during sudden fault events, avoiding the risk of accidental contact and leakage caused by large-area exposure of live parts in the secondary circuit, and significantly improving the safety and stability of the device operation.

[0026] like Figures 3-5 As shown, the isolation adjustment assembly 6 includes an isolation frame 61 that is snapped onto both ends of the guide rail 1. The isolation frame 61 is disposed on the outer surface of the terminal block 3, and ear blocks 62 are fixedly connected to the top two ends of the isolation frame 61. After the terminal block 3 is installed on the guide rail 1, the corresponding spacer 5 is inserted and placed. Then the isolation adjustment assembly 6 starts to operate. First, the isolation frame 61 is placed on top of the guide rail 1, and then the bottom of the isolation frame 61 is connected to the guide rail 1. Then, by gradually pressing the ear blocks 62, force is applied to the isolation frame 61. The isolation frame 61 is gradually engaged with the bottom of the guide rail 1 at both ends, thus connecting the isolation frame 61 with the guide rail 1. Then, the isolation frame 61 and the partition 5 form a wrap-around isolation outside the terminal block 3, reducing the risk of electric shock to personnel. At the same time, the stable wrap-around insulation space can isolate dust and moisture inside the cabinet and in the environment, reducing the occurrence of short circuits, grounding faults and other situations in the terminal block 3. It also improves the circuit continuity of the secondary circuit in the daily use of the terminal block 3, ensuring the normal transmission and operation of power signals and control signals.

[0027] like Figures 4-6 As shown, crossbeams 63 are fixedly connected to the top two sides of the isolation frame 61, and multiple energy-absorbing pads 64 are fixedly connected to the bottom of the multiple crossbeams 63. The bottom of the multiple energy-absorbing pads 64 is in contact with the top of the partition 5. After the isolation frame 61 is connected to the guide rail 1, the crossbeams 63 on the top two sides of the isolation frame 61 drive the multiple bottom energy-absorbing pads 64 to contact the top of the partition 5. When the isolation frame 61 is engaged with the guide rail 1, the multiple energy-absorbing pads 64 slowly contact the top of the partition 5 above the partition 5 to avoid hard contact and damage to the body of the isolation frame 61. At the same time, the multiple energy-absorbing pads 64 also reduce the gap between the structures and reduce the existing play.

[0028] like Figure 5 and Figure 6 As shown, block-shaped friction elements 65 are fixedly connected to the bottom of both ends of the isolation frame 61. The top of the block-shaped friction elements 65 contacts the bottom surface of the end of the guide rail 1. Then, as the isolation frame 61 is engaged with the guide rail 1, a slight deformation occurs, which does not affect the structure on the isolation frame 61. The block-shaped friction elements 65 at the bottom of the isolation frame 61 contact the bottom surface of the guide rail 1. While increasing friction, multiple energy-absorbing pads 64 are used to reduce the play between structures, increase structural stability, and reduce safety hazards.

[0029] like Figures 3-7 As shown, the anomaly feedback component 7 includes multiple edge sensing strips 71 fixedly connected to the inner wall edge of the isolation frame 61. The ends of the multiple edge sensing strips 71 are provided with horizontal sensing strips 72, which are fixedly connected to the inner wall of the isolation frame 61. A through-bracing strip 74 is provided through the interior of each edge sensing strip 71, passing through the axis of the edge sensing strip 71. At this time, the edge sensing strips 71 on the inner wall edge of the isolation frame 61 and the horizontal sensing strips 72 on the inner wall form a crisscrossing integrated sensing network structure, enhancing the strength of the isolation frame 61, increasing the service life of the insulation cover of the isolation frame 61, and reducing the deformation of the insulation cover of the isolation frame 61. The edge sensing strips 71 on the inner wall edge of the isolation frame 61 and the horizontal sensing strips 72 on the inner wall together form the sensing network described in the aforementioned document. The mesh structure, along with the through-bracing strips 74 interwoven inside the edge sensing strips 71 and the horizontal sensing strips 72, serves as an internal reinforcement structure, further enhancing the overall rigidity of the isolation frame 61. Under normal operation, it effectively avoids spontaneous deformation and maintains the integrity of the insulation isolation structure. When the isolation frame 61 is subjected to vibration, temperature, or device aging, resulting in cracks or deformation, the abnormal feedback component 7 starts operating. Then, the cracked part of the isolation frame 61 causes the corresponding cracked part of the sensing mesh structure to crack synchronously. Then, the through-bracing strips 74 provide rigidity for the sensing mesh formed by the crisscrossing edge sensing strips 71 and the horizontal sensing strips 72, while also pulling the sensing mesh. Subsequently, the unbroken part of the through-bracing strips 74 exerts force on the broken parts of the edge sensing strips 71 and the horizontal sensing strips 72 on the inner wall.

[0030] like Figures 4-8As shown, a force-luminescent element 73 is also provided inside the edge sensing strip 71. The force-luminescent element 73 fills the interior of the edge sensing strip 71 and is located on the outer surface of the through-bracing strip 74. Both the edge sensing strip 71 and the transverse sensing strip 72 are provided with through-bracing strips 74 and force-luminescent elements 73 inside. Multiple through-bracing strips 74 provided inside the edge sensing strip 71 and the transverse sensing strip 72 are connected in sequence. When cracks occur on the surface of the edge sensing strip 71 and the transverse sensing strip 72 on the inner wall, the force-luminescent element 73 is provided inside the edge sensing strip 71 and the transverse sensing strip 72. When mechanical force is applied to the force-luminescent element 73, the force-luminescent element 73 at the position corresponding to the crack in the isolation frame 61 will be triggered and produce light, allowing the operator to quickly observe the part of the abnormal change. At the same time, because the edge sensing strip 71 The through-bracing strip 74 inside the horizontal sensing strip 72 serves the purpose of pulling the fractured part when the edge sensing strip 71 and the horizontal sensing strip 72 crack at the corresponding cracked part of the isolation frame 61. Consequently, the internal force-luminescent material 73 only shows a localized change in light emission. Since the fractured part of the edge sensing strip 71 or the horizontal sensing strip 72 loses the force-luminescent material 73 after cracking, this part does not emit light. However, at the other parts of the fractured edge sensing strip 71 or the horizontal sensing strip 72, the force-luminescent material 73 is continuously pressured by the through-bracing strip 74, so it will emit light as a warning. Therefore, a dark crack will be generated, which is the actual crack location of the isolation frame 61, realizing the accurate location of the fault point. Operators can quickly check and identify potential cracks in the insulation cover, greatly improving the efficiency of fault detection and realizing the rapid screening and handling of insulation damage problems.

[0031] like Figures 3-10 As shown, the air chamber gathering assembly 8 includes an expansion chamber 81 fixedly connected to the inside of the top of the isolation frame 61. A guide cylinder cavity 82 is fixedly connected to the end opening of the expansion chamber 81. Slide grooves 83 are provided at both ends of the inner wall of the guide cylinder cavity 82. When the insulation performance of the isolation frame 61 drops significantly due to cracking or deformation, partial discharge and creepage phenomena occur in the live parts of the terminal block 3, causing abnormal losses in the secondary circuit and causing the terminal temperature to rise rapidly. At this time, the air chamber gathering assembly 8 starts to operate. The rising temperature begins to act on the gas inside the expansion chamber 81. Then, the gas is driven by the heat and begins to be transported to the guide cylinder cavity 82 through the end opening of the expansion chamber 81. The slide grooves 83 on the inner wall of the guide cylinder cavity 82 provide a limiting and guiding basis for subsequent operation.

[0032] like Figures 9-11As shown, an elastic frame 86 is fixedly connected to the bottom of the guide cylinder cavity 82, and a fixed baffle 87 is fixedly connected to the top of the elastic frame 86. The fixed baffle 87 is slidably connected to the guide cylinder cavity 82. At this time, the fixed baffle 87 drives the elastic frame 86 to be in a compressed state. When the elastic frame 86 moves, the fixed baffle 87 is slid synchronously in the guide cylinder cavity 82.

[0033] like Figure 10 As shown, a push rod 88 is inserted through the axis of the fixed baffle 87. The bottom of the push rod 88 is inserted through the bottom of the isolation frame 61. A slider 85 is movably connected to the top of the push rod 88, and the slider 85 is located at the output end of the expansion chamber 81. The top of the push rod 88 is a semi-circular body, and the bottom of the slider 85 is provided with an arc-shaped groove. In the normal state, one-third of the top semi-circular body of the push rod 88 is inserted into the arc-shaped groove at the bottom of the slider 85. When the equipment is in normal state, the push rod 88 limits the slider 85. As the gas inside the expansion chamber 81 expands and generates driving force, the output of the expansion chamber 81... The slider 85 at the outlet begins to be subjected to force, and then the top of the push rod 88 is pushed. Under the guidance of the arc groove and the semi-arc body, the push rod 88 slowly moves downward. Then the slider 85 is released from its restraint and begins to slide towards the end of the guide cylinder cavity 82 away from the expansion chamber 81 as the gas pushes it. At this time, when the slider 85 slides away from the top of the push rod 88, under the action of the elastic frame 86, the elastic frame 86 begins to release its elasticity and push the fixed baffle 87 to slide upward on the inner wall of the guide cylinder cavity 82. As the fixed baffle 87 slides upward, the push rod 88, which is fixedly connected to the fixed baffle 87, moves upward synchronously.

[0034] like Figure 10 and Figure 11As shown, a protrusion 84 is fixedly connected to the end of the slider 85, and the protrusion 84 is slidably connected to the groove 83. A hook 89 is fixedly connected to the bottom of the push rod 88, and the hook 89 is located below the edge sensing strip 71. A friction protrusion 810 is fixedly connected to the inner wall of the hook 89. At this time, the protrusion 84 facilitates the directional sliding of the slider 85, reducing the resistance to forward movement. Then, after the push rod 88 loses the obstruction of the top limit slider 85, the push rod 88 moves upward, and drives the hook 89 fixedly connected at the bottom and the friction protrusion 810 on the surface of the hook 89 to rise together. Then the hook 89 begins to pull the sensing network formed by the crisscrossing edge sensing strip 71 and the horizontal sensing strip 72 upward. At this time, under the pulling force of the hook 89, the edge sensing strip 71 and the horizontal sensing strip 72 both begin to break. Then the continuously rising push rod 88... The unbroken through-wire 74 continues to rise, pulling all the through-wires 74 on the sensing network. At this point, the sensing network contracts and converges towards the center of the isolation frame 61 structure. Then, the sensing network formed by the edge sensing strips 71 and the horizontal sensing strips 72 begins to emit light across the entire area. At this time, the isolation device is completely damaged, making it easier for operators to observe. It forms a tightening constraint on the surface of the isolation frame 61 at the cracked and deformed parts, reducing the width of the crack in the anti-accidental contact isolation device and preventing the crack from expanding further. This effectively alleviates the problem of rapid decay of the insulation performance of the anti-accidental contact isolation device, forming reliable emergency protection during the sudden fault stage. It avoids the risk of accidental contact and leakage caused by large-area exposure of the live parts of the secondary circuit, greatly improving the safety and stability of the device operation, while providing operators with more maintenance time and reducing equipment damage.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing accidental contact with live parts in a secondary circuit, comprising a guide rail (1), characterized in that: The inner wall of the guide rail (1) is fitted with a terminal block (3), and the inner wall of the guide rail (1) is also fitted with a marking clip (2). A partition (5) is inserted into one side of the terminal block (3), and wires (4) are inserted into both ends of the opening of the terminal block (3). An isolation adjustment component (6) is fitted into the end of the guide rail (1). An abnormal feedback component (7) is fixedly connected to the inner wall of the isolation adjustment component (6), and an air chamber gathering component (8) is provided on the top of the isolation adjustment component (6).

2. The anti-accidental contact isolation device for energized parts of a secondary circuit according to claim 1, characterized in that: The isolation adjustment assembly (6) includes an isolation frame (61) that is snapped onto both ends of the guide rail (1). The isolation frame (61) is disposed on the outer surface of the terminal block (3). Ear blocks (62) are fixedly connected to the top two ends of the isolation frame (61).

3. The anti-accidental contact isolation device for energized parts of a secondary circuit according to claim 2, characterized in that: The top two sides of the isolation frame (61) are fixedly connected with crossbeams (63), and the bottom of the crossbeams (63) is fixedly connected with multiple energy-absorbing pads (64). The bottom of the multiple energy-absorbing pads (64) is in contact with the top of the partition (5).

4. The anti-accidental contact isolation device for energized parts of a secondary circuit according to claim 3, characterized in that: The bottom of both ends of the isolation frame (61) is fixedly connected with block friction parts (65), and the top of the block friction parts (65) is in contact with the bottom surface of the end of the guide rail (1).

5. The anti-accidental contact isolation device for energized parts of a secondary circuit according to claim 2, characterized in that: The abnormal feedback component (7) includes multiple edge sensing strips (71) fixedly connected to the inner wall edge of the isolation frame (61). The ends of the multiple edge sensing strips (71) are provided with horizontal sensing strips (72). The horizontal sensing strips (72) are fixedly connected to the inner wall of the isolation frame (61). A through tie strip (74) is provided through the inside of the edge sensing strip (71). The through tie strip (74) is provided through the axis of the edge sensing strip (71).

6. The anti-accidental contact isolation device for energized parts of a secondary circuit according to claim 5, characterized in that: The edge sensing strip (71) is further provided with a force luminescent body (73). The force luminescent body (73) fills the interior of the edge sensing strip (71) and is disposed on the outer surface of the through tie strip (74). The edge sensing strip (71) and the horizontal sensing strip (72) are both provided with through tie strips (74) and force luminescent bodies (73). Multiple through tie strips (74) provided inside the edge sensing strip (71) and the horizontal sensing strip (72) are connected in sequence.

7. The anti-accidental contact isolation device for energized parts of a secondary circuit according to claim 6, characterized in that: The air chamber gathering assembly (8) includes an expansion chamber (81) fixedly connected to the inside of the top of the isolation frame (61). A guide cylinder cavity (82) is fixedly connected to the end opening of the expansion chamber (81). Slide grooves (83) are provided at both ends of the inner wall of the guide cylinder cavity (82).

8. The anti-accidental contact isolation device for energized parts of a secondary circuit according to claim 7, characterized in that: An elastic frame (86) is fixedly connected to the bottom of the inner cavity of the guide cylinder (82), and a fixed baffle (87) is fixedly connected to the top of the elastic frame (86). The fixed baffle (87) is slidably connected to the guide cylinder (82).

9. The anti-accidental contact isolation device for energized parts of a secondary circuit according to claim 8, characterized in that: A push rod (88) is provided through the axis of the fixed baffle (87). The bottom of the push rod (88) is provided through the bottom of the top of the isolation frame (61). A slider (85) is movably connected to the top of the push rod (88). The slider (85) is located at the output end of the expansion chamber (81).

10. The anti-accidental contact isolation device for energized parts of a secondary circuit according to claim 9, characterized in that: The end of the slider (85) is fixedly connected to a protrusion (84), which is slidably connected to the groove (83). The bottom of the push rod (88) is fixedly connected to a hook (89), which is located below the edge sensing strip (71). The inner wall of the hook (89) is fixedly connected to a friction protrusion (810).

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