A falling type fuse on-line monitoring device

Abstract

This utility model discloses an online monitoring device for drop-out fuses. Key technical features include a monitoring device body, which integrates a power supply module, a communication module, and a position sensor. The monitoring device body has a split structure, comprising at least two separable and combinable components. When combined, these components form an installation cavity through which the fuse tube passes. The monitoring device body has a protruding clamping block extending from it, with a sliding groove containing a claw that can move closer to or away from the clamping block. A control rod connected to the claw is also located within the groove. This utility model secures fuse tubes of different sizes by clamping them with the clamping block. The control rod allows for easy and convenient operation of the claw to move closer to or away from the clamping block, facilitating easy assembly and disassembly. The split design of the monitoring device body allows for installation around the fuse tube, achieving a closed magnetic circuit and improving current detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of drop-out fuse technology, and more specifically to an online monitoring device for drop-out fuses. Background Technology

[0002] Currently, drop-out fuses are the most commonly used short-circuit protection switches for 10kV distribution line branches and distribution transformers. When installed on 10kV distribution line branches, they can reduce the power outage area because they have a clear disconnect point, functioning as a disconnector and creating a safe working environment for the lines and equipment under maintenance. When installed on distribution transformers, they can serve as the main protection for the transformers. An online monitoring device for drop-out fuses is an electrical component fixed to the fuse tube of the drop-out fuse for monitoring the fuse's operating status.

[0003] However, there are still some drawbacks in the existing technology. The existing drop-out fuse detection device needs to be fixed to the fuse tube by tightening screws. Drop-out fuses are often installed on transmission towers tens of meters high or in dense power distribution areas of urban overpasses. Operators work at height, the operating space is limited, it is difficult to align the screws with the screw holes, which is very time-consuming and laborious. Moreover, when tightening the screws with one hand, the other hand needs to hold a wrench, which poses a risk of the tool falling out of the hand. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an online monitoring device for drop-out fuses.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a monitoring device body, which integrates a power supply module, a communication module, and a position sensor. The monitoring device body has a split structure, comprising at least two separable and combinable components. When combined, the components form an installation cavity through which the fuse tube of a fuse can pass. The monitoring device body has a protruding clamping block extending from it, with a sliding groove. A claw is provided within the sliding groove, capable of moving away from or towards the clamping block along the groove. A clamping space adapted to the installation cavity is formed between the claw and the clamping block. A control rod connected to the claw is provided within the sliding groove.

[0006] The present invention is further configured such that: the claw is connected to the control rod via a connecting block, wherein the claw is fixedly connected to the connecting block, and the connecting block is movably connected to the control rod.

[0007] The present invention is further configured such that: the control rod includes a threaded section and a smooth section; the connecting block is provided with a thread adapted to the threaded section; the smooth section is close to the clamping block and is movably connected to the sliding groove; the threaded section is movably connected to the connecting block; when the control rod rotates, the connecting block drives the pawl to move along the axial direction of the control rod.

[0008] The present invention is further configured such that: a rotating block with friction texture is provided at the end of the optical segment.

[0009] The present invention is further configured such that: the slide groove is provided with an observation opening adapted to the contour of the chuck block away from the clamping block.

[0010] The present invention is further configured such that: friction protrusions are provided on the surface of the jaw facing the pressing block; and friction pads adapted to the friction protrusions are provided on the surface of the pressing block facing the jaw.

[0011] The present invention is further configured such that: a photovoltaic panel is provided on the outside of the main body of the monitoring device; the photovoltaic panel is connected to a power supply module.

[0012] The present invention is further configured such that: a temperature detection device is provided near the clamping block on the main body of the monitoring device, and the monitoring probe of the temperature detection device is flush with the contact surface of the clamping block contacting the fuse tube.

[0013] The present invention is further configured such that a positioning unit is integrated inside the main body of the monitoring device.

[0014] In summary, this utility model has the following advantages: it can be fixed to molten tubes of different sizes by clamping the claws and the clamping block, and the claws can be easily moved closer to or away from the clamping block by the control rod, thus achieving convenient assembly and disassembly; the split design of the main body of the monitoring device allows the utility model to be installed around the molten tube, thereby achieving a closed magnetic circuit, reducing magnetic leakage, and improving the accuracy of current detection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0016] Figure 2 This is a partial sectional view of this embodiment;

[0017] Figure 3 This is a schematic diagram of an open state in this embodiment;

[0018] Figure 4 This is a schematic diagram of one operation in this embodiment;

[0019] Reference numerals in the attached drawings: 1. Main body of the monitoring device; 11. Separate components; 12. Mounting cavity; 2. Clamping block; 21. Friction pad; 3. Slide groove; 31. Observation opening; 4. Control rod; 41. Threaded section; 42. Optical section; 43. Rotating block; 5. Claw; 51. Connecting block; 52. Friction protrusion; 6. Photovoltaic panel; 7. Temperature detection device; 71. Monitoring probe. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] This embodiment discloses an online monitoring device for drop-out fuses, such as... Figures 1 to 2 As shown, the device includes a main body 1 of a monitoring device, which integrates a power supply module, a communication module, and a position sensor. The main body 1 has a split structure, comprising at least two separable and combinable components 11. When combined, the components 11 form an installation cavity 12 through which the fuse tube passes. Each component 11 is equipped with a snap-fit ​​device for easy connection and assembly. After the main body 1 is opened, it encloses the fuse tube. Once secured by the snap-fit ​​device, the fuse tube can easily engage with the installation cavity 12. The main body 1 also features a protruding clamping block 2. The clamping block 2 extends with a groove 3, and a claw 5 is provided in the groove 3, which can move away from or towards the clamping block 2 along the groove 3. The claw 5 and the clamping block 2 can form a clamping space adapted to the installation cavity 12. The position of the claw 5 is adjusted by the control rod 4, and the diameter of the clamping space can be dynamically adjusted to adapt to the installation requirements of fuse tubes of different specifications (diameters) without the need to replace parts. The groove 3 can effectively limit the movement trajectory of the claw 5, so that the claw 5 maintains a stable movement posture during sliding without rotation, thus improving the stability of the claw 5. The control rod 4 connected to the claw 5 is provided in the groove 3.

[0022] Further improvements include connecting the chuck 5 to the control rod 4 via a connecting block 51. The chuck 5 is fixedly connected to the connecting block 51, while the connecting block 51 is movably connected to the control rod 4. The connecting block 51 is a relatively independent component. When the threaded pair of the connecting block 51 wears, only the connecting block 51 needs to be replaced, without replacing the entire chuck 5, thus reducing maintenance costs. Compared to directly machining threads on the complex-shaped and dimensionally limited chuck 5, machining the threads on the independent connecting block 51 is easier. The design of the connecting block 51 simplifies the manufacturing process of the chuck 5, saving costs.

[0023] like Figure 3As shown, the control lever 4 includes a threaded section 41 and a smooth section 42. The connecting block 51 is provided with a thread adapted to the threaded section 41. The smooth section 42 is close to the clamping block 2 and is movably connected to the slide groove 3. When rotating, the smooth section 42 acts as a smooth rod, and the relative position between the smooth section 42 and the slide groove 3 will not be displaced with the rotation of the control lever, and it can be stably set in the slide groove 3. Moreover, the smooth section 42 is subject to low friction, and the frictional resistance generated by the sliding connection with the slide groove 3 is low, which makes the rotation operation of the control lever 4 easier and smoother. The threaded section 41 is movably connected to the connecting block 51. When the control lever 4 rotates, the connecting block 51 drives the pawl 5 to move along the axial direction of the control lever 4. The threaded section 41 and the threaded hole in the connecting block 51 form a helical pair. When the control lever 4 rotates, the helical pair accurately converts the rotational motion into the linear motion of the connecting block 51 (together with the pawl 5) along the axis of the control lever 4.

[0024] To further improve the design, a rotating block 43 with friction texture is provided at the end of the optical segment 42. When the rotating block 43 rotates, it drives the control lever 4 to rotate. When operating the control lever 4, the gripper 5 can be controlled by manually rotating the rotating block 43 without the need for tools, making installation simple and convenient.

[0025] To further improve the design, the slide groove 3 is provided with an observation opening 31 that conforms to the contour of the claw 5, away from the clamping block 2. The observation opening 31 allows for observation of the connection between the connecting block 51 and the control rod 4 during assembly, facilitating convenient and effective adjustment of the claw 5's posture and simplifying the assembly of the control rod 4 and the connecting block 51.

[0026] Further improvements include: friction protrusions 52 on the surface of the jaw 5 facing the clamping block 2; and friction pads 21 adapted to the friction protrusions 52 on the surface of the clamping block 2 facing the jaw 5. The friction protrusions 52 and friction pads 21 generate adaptive friction force through continuous elastic clamping, reducing slippage due to vibration. The friction protrusions 52 and friction pads 21 are made of insulating material, enhancing the insulation effect of this invention and significantly improving installation reliability and operational safety.

[0027] like Figure 4 As shown, a photovoltaic panel 6 is installed on the outer side of the main body 1 of the monitoring device; the photovoltaic panel 6 is connected to the power supply module. The maintenance of the photovoltaic panel 6 only requires periodic cleaning of the panel surface, and the maintenance cost is lower than that of the CT which requires inspection of the magnetic core and circuit. When installing the photovoltaic panel 6, there is no need to contact the high-voltage wires, which reduces the difficulty of insulation design.

[0028] Further improvements include a temperature detection device 7 positioned near the clamping block 2 on the main body 1 of the monitoring device. The monitoring probe 71 of the temperature detection device 7 is flush with the contact surface of the fuse tube of the clamping block 2. The temperature detection device 7 monitors the temperature at the end of the fuse tube and issues an alarm when the temperature rises abnormally. The flush placement of the monitoring probe 71 with the clamping block 2 ensures direct contact between the probe and the surface of the fuse tube, allowing the monitoring probe 71 to be clamped along with the fuse tube, close to the end of the fuse tube for convenient observation, thus achieving effective and reliable measurement.

[0029] Furthermore, the main body 1 of the monitoring device integrates a positioning unit. This positioning unit enables rapid location of the coordinates of the faulty fuse and quickly pinpoints the drop point of a drop-out fuse, eliminating the need to spend considerable time and effort searching for the fuse tube's drop point.

[0030] Working principle of this utility model

[0031] During assembly, the claw 5 and the connecting block 51 are simply combined. The claw 5 is placed in the slide groove 3 through the observation opening 31, and the control rod 4 is inserted into the slide groove 3. The cooperation between the control rod 4 and the connecting block 51 can be well observed through the observation opening 31, so that the cooperation between the control rod 4 and the connecting block 51 is very smooth and the assembly can be completed conveniently.

[0032] During installation, rotating the rotating block 43 moves the claw 5 away from the clamping block 2, maximizing the clamping space and adapting to various types of fused tubes. Releasing the latches on the main body 1 of the monitoring device separates the split components 11. Sleeve the split components 11 onto the fused tube, and close the latches to complete the initial installation. Moving the device brings the temperature detection device 7 closer to the end of the fused tube, and rotating the rotating block 43 moves the claw 5 closer to the clamping block 2. The claw 5 and the clamping block 2 close and clamp the fused tube, achieving a stable connection. At this point, the monitoring probe 71 will be close to the end of the fused tube, providing good monitoring results.

[0033] In use, this utility model is installed on the fuse tubes of various drop-out fuses in the regional power distribution network. The device is powered by a combination of photovoltaic panels and lithium batteries. Each device is responsible for identifying the status of the corresponding fuse tube, monitoring the load current of the corresponding phase line, and locating its position. When the line is normal, it reports relevant information periodically. When a short-circuit fault occurs in the power grid, causing a fuse to activate its protection and the fuse tube to drop, the device installed on the fuse tube uses a position sensor to identify the drop status of the fuse tube in real time and accurately. It immediately reports the data, including the drop status of the fuse tube, the line load before the drop, and the location information, to the upper-level server via wireless transmission. The upper-level server can then share the data with other user terminals. Maintenance personnel can access the latest information of each fuse in the power grid at any time through these user terminals and can arrive at the site immediately to handle the situation when a fuse tube drops.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A falling type fuse online monitoring device, comprising a monitoring device main body (1), the monitoring device main body (1) is integrated with a power supply module, a communication module and a position sensor, characterized in that: The main body (1) of the monitoring device is a split structure, which includes at least two split parts (11) that can be separated and combined. When combined, the split parts (11) can form an installation cavity (12) through which the fuse tube of the fuse can pass. The main body (1) of the monitoring device is provided with a protruding clamping block (2). The clamping block (2) extends with a sliding groove (3). The sliding groove (3) is provided with a claw (5) that can move away from or close to the clamping block (2) along the sliding groove (3). The claw (5) and the clamping block (2) can form a clamping space that is adapted to the installation cavity (12). The sliding groove (3) is provided with a control rod (4) connected to the claw (5).

2. The online monitoring device for a drop-out fuse according to claim 1, characterized in that: The claw (5) is connected to the control rod (4) via a connecting block (51), wherein the claw (5) is fixedly connected to the connecting block (51), and the connecting block (51) is movably connected to the control rod (4).

3. The online monitoring device for a drop-out fuse according to claim 2, characterized in that: The control rod (4) includes a threaded section (41) and a smooth section (42). The connecting block (51) is provided with a thread that is compatible with the threaded section (41). The smooth section (42) is close to the clamping block (2) and is movably connected to the slide groove (3). The threaded section (41) is movably connected to the connecting block (51). When the control rod (4) rotates, the connecting block (51) drives the pawl (5) to move along the axial direction of the control rod (4).

4. The online monitoring device for a drop-out fuse of claim 3, wherein: The end of the optical segment (42) is provided with a rotating block (43) with friction texture.

5. The online monitoring device of a drop-out fuse of claim 1, wherein: The groove (3) is provided with an observation opening (31) that is adapted to the contour of the claw (5) away from the clamping block (2).

6. The online monitoring device of a drop-out fuse of claim 1, wherein: The surface of the claw (5) facing the pressing block (2) is provided with friction protrusions (52); the surface of the pressing block (2) facing the claw (5) is provided with friction pads (21) that are adapted to the friction protrusions (52).

7. The online monitoring device of a drop-out fuse of claim 1, wherein: A photovoltaic panel (6) is provided on the outside of the main body (1) of the monitoring device; the photovoltaic panel (6) is connected to the power supply module.

8. The online monitoring device of a drop-out fuse of claim 1, wherein: The main body (1) of the monitoring device is equipped with a temperature detection device (7) near the clamping block (2). The monitoring probe (71) of the temperature detection device (7) is flush with the contact surface of the fuse tube of the clamping block (2).

9. The online monitoring device of a drop-out fuse of claim 1, wherein: The main body (1) of the monitoring device integrates a positioning unit.

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