Drop-out fuse state monitoring device

Abstract

The utility model discloses a drop-out fuse state monitoring device, which relates to the technical field of drop-out fuses and comprises a drop-out fuse body, a sensor host, a sensor slave, a first wiring terminal, a second wiring terminal and a fixing bolt, the sensor host is arranged on one side of the drop-out fuse body, and the sensor slave is arranged on the other side of the drop-out fuse body. One side of the bottom end of the drop-out fuse body is provided with a sensor slave, and one side of the sensor host is provided with a first wiring terminal. The hanging buckle type fixing base is installed on a rain cover of a drop-out fuse body through the sliding block and the buckle, the buckle is screwed through the screw rod to fix equipment, the terminal type fixing base is integrated with the second wiring terminal, and during installation, the fixing bolt needs to be detached to replace the original second wiring terminal, so that installation is completed. The voltage drop is calculated through voltage monitoring at the two ends, so that the state of the fusible core is monitored in detail, and faults caused by abnormal falling of the fusion tube due to factors such as an installation mode and a severe environment are avoided.

Description

Technical Field

[0001] This utility model relates to the field of drop-out fuse technology, specifically a drop-out fuse status monitoring device. Background Technology

[0002] As the main short-circuit protection device for 10kV distribution lines and distribution transformers, the drop-out fuse melts within milliseconds when a sudden short-circuit fault occurs on the line. The fuse then drops through the fuse tube to form a visible break, quickly cutting off the fault current. This mechanism can prevent the short-circuit current from causing thermal shock to equipment such as transformer windings.

[0003] When existing drop-out fuse condition monitoring equipment is in use, most of the equipment relies on manual inspection, which makes it impossible to monitor key parameters such as fuse temperature, current, and fuse tube status in real time. This makes it difficult to detect fuse abnormalities in a timely manner, which can easily lead to power outages, equipment damage, or even fire risks. In addition, traditional fuses lack data traceability capabilities, have low fault location efficiency, and have high operation and maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a condition monitoring device for drop-out fuses, so as to solve the problem that the condition monitoring devices for drop-out fuses mentioned in the background art are not easy to monitor key parameters in a timely manner.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drop-out fuse status monitoring device, comprising a drop-out fuse body, a sensor host, a sensor slave, a first terminal block, a second terminal block, and fixing bolts. The sensor host is disposed on one side of the drop-out fuse body, and the sensor slave is disposed on one side of the bottom end of the drop-out fuse body. The first terminal block is disposed on one side of the sensor host, and the second terminal block is disposed on one side of the sensor slave. Fixing bolts are disposed on one side of both the second terminal block and the first terminal block. The sensor host includes a main body disposed on one side of the drop-out fuse body, and a hook-type fixing seat is disposed at the bottom end of the main body.

[0006] Preferably, a current detection probe is provided at the bottom of the hook-type fixing base, a voltage detection probe is provided on the side of the bottom of the hook-type fixing base near the current detection probe, and a buckle is provided on one side of the voltage detection probe.

[0007] Preferably, the surface of the hook-type fixing seat is provided with a metal sheet, and both ends of the hook-type fixing seat are provided with sliders.

[0008] Preferably, both sliders are provided with hooks at their bottom ends, and the surface of the hook-type fixing seat is provided with a slot on the side near the metal sheet.

[0009] Preferably, the sensor slave includes a slave portion disposed at the bottom end of the drop-out fuse body.

[0010] Preferably, a terminal type fixing seat is provided on one side of the slave body portion.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This drop-out fuse condition monitoring device is installed on the rain cover of the drop-out fuse body using a hook-type fixing base with a slider and a buckle. The device is fixed by tightening the buckle with a screw. The terminal type fixing base integrates a second terminal. During installation, the fixing bolts need to be removed and the original second terminal replaced to complete the installation, so that it can be fixed on the surface of the drop-out fuse body. The current detection probe and voltage detection probe are located at the bottom of the measuring part. Through the connection of the fixing base, the measuring probe is made to be in close contact with the current path of the conductor of the drop-out fuse body. Then, the current detection chip is used to measure the magnitude of the current in the path. In addition, a metal plate is installed at the connection between the hook-type fixing base and the measuring part. The metal plate contacts the conductor of the drop-out fuse body to achieve the same voltage, etc. The measurement section has voltage detection chips installed at corresponding positions on the metal sheet. Sealing at the connection prevents rainwater from entering and controls the probe gap to reduce errors in non-contact voltage measurement. The device also features a master-slave mechanism: the main sensor is installed at the inlet of the drop-out fuse, and the slave sensor is installed at the outlet. It uses an electric field for energy extraction, utilizing high-voltage discharge through the cable. An internal battery allows it to report information after a power outage. The master and slave devices transmit information wirelessly, detecting the voltage at both ends to determine the fuse core status. Monitoring the voltage drop at both ends provides more detailed monitoring of the fuse core status and avoids malfunctions caused by improper fuse drop due to installation methods or harsh environments. Furthermore, unlike coil-based energy extraction schemes, it avoids the drawback of insufficient energy extraction when the line current is too low. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the drop-out fuse body of this utility model;

[0013] Figure 2 This is a three-dimensional structural diagram of the sensor host of this utility model;

[0014] Figure 3 This is a three-dimensional structural diagram of the hook-type fixing base of this utility model;

[0015] Figure 4 This is a schematic diagram of the terminal type fixing base structure of this utility model;

[0016] Figure 5 This is a three-dimensional structural diagram of the current detection probe of this utility model.

[0017] In the diagram: 1. Drop-out fuse body; 2. Sensor host; 21. Main body; 211. Current detection probe; 212. Voltage detection probe; 213. Clip; 22. Hook-type mounting base; 221. Metal sheet; 222. Slider; 223. Hook; 224. Empty slot; 3. Sensor slave; 31. Slave body; 32. Terminal type mounting base; 4. First terminal; 5. Second terminal; 6. Fixing bolt. Detailed Implementation

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

[0019] Please see Figures 1-5 It is understood that this utility model provides a technical solution: a drop-out fuse status monitoring device, including a drop-out fuse body 1, a sensor host 2, a sensor slave 3, a first terminal block 4, a second terminal block 5, and fixing bolts 6. The sensor host 2 is disposed on one side of the drop-out fuse body 1, and the sensor slave 3 is disposed on one side of the bottom of the drop-out fuse body 1. The first terminal block 4 is disposed on one side of the sensor host 2, and the second terminal block 5 is disposed on one side of the sensor slave 3. Fixing bolts 6 are disposed on one side of both the second terminal block 5 and the first terminal block 4. The sensor host 2 includes a main body portion 21 disposed on one side of the drop-out fuse body 1, and a fixing bolt 6 is disposed at the bottom of the main body portion 21. The hook-type fixing base 22 has a current detection probe 211 at its bottom end and a voltage detection probe 212 at the bottom end of the hook-type fixing base 22 near the current detection probe 211. A buckle 213 is provided on one side of the voltage detection probe 212. A metal sheet 221 is provided on the surface of the hook-type fixing base 22. Slider 222 is provided at both ends of the hook-type fixing base 222. A hook 223 is provided at the bottom end of both sliders 222. A slot 224 is opened on the surface of the hook-type fixing base 22 near the metal sheet 221. The sensor slave 3 includes a slave part 31 located at the bottom end of the drop-out fuse body 1. A terminal type fixing base 32 is provided on one side of the slave part 31.

[0020] See Figures 1-5It can be seen that by mounting the hook-type fixing base 22 on the rain cover of the drop-out fuse body 1 using the slider 222 and the buckle 213, and fixing the device by tightening the buckle 213 with a screw, the terminal type fixing base 32 integrates the second terminal 5. During installation, it is necessary to remove the fixing bolt 6 and replace the original second terminal 5 to complete the installation, so that it can be fixed on the surface of the drop-out fuse body 1. The current detection probe 211 and the voltage detection probe 212 are located at the bottom of the measuring part. Through the connection of the fixing base, the measuring probe is made to be close to the conductor current path of the drop-out fuse body 1. Then, the current detection chip is used to measure the magnitude of the current in the path. A metal piece 221 is installed at the connection between the hook-type fixing base 22 and the measuring part. The metal piece 221 is in contact with the conductor of the drop-out fuse body 1 to achieve the same voltage level. The measurement section has a voltage detection chip installed at the corresponding position on the metal sheet 221. The connection is sealed to prevent rainwater from entering, and the probe gap is controlled to reduce errors in non-contact voltage measurement. The device also has a master-slave mechanism. The sensor master 2 is installed at the inlet of the drop-out fuse body 1, and the sensor slave 3 is installed at the outlet. It uses an electric field to extract energy and utilizes the high voltage discharge of the cable to extract energy. It has a built-in battery and can report information after the cable is de-energized. The master and slave devices transmit information wirelessly, detect the voltage collected at both ends, and determine the status of the fuse core of the drop-out fuse body 1. The voltage drop is calculated by monitoring the voltage at both ends to achieve more detailed monitoring of the fuse core status. It also avoids failures caused by factors such as installation method and harsh environment that prevent the fuse tube from dropping normally. In addition, unlike the coil energy extraction scheme, it avoids the disadvantage of not being able to extract energy when the line current is too low.

[0021] In summary, the drop-out fuse, as the main short-circuit protection device for 10kV distribution lines and distribution transformers, is fixed by mounting the hook-type fixing seat 22 on the rainproof cover of the drop-out fuse body 1 using the slider 222 and the buckle 213, and then tightening the buckle 213 with a screw. The terminal type fixing seat 32 integrates the second terminal 5. During installation, the fixing bolt 6 needs to be removed and the original second terminal 5 replaced to complete the installation. This allows for more detailed monitoring of the fuse core status by calculating the voltage drop at both ends, and avoids faults caused by the fuse tube not dropping properly due to factors such as installation method and harsh environment. Moreover, unlike the coil energy extraction scheme, it avoids the disadvantage of not being able to extract energy when the line current is too low. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drop-out fuse status monitoring device, comprising a drop-out fuse body (1), a sensor host (2), a sensor slave (3), a first terminal block (4), a second terminal block (5), and a fixing bolt (6), characterized in that: A sensor host (2) is provided on one side of the drop-out fuse body (1), a sensor slave (3) is provided on one side of the bottom end of the drop-out fuse body (1), a first terminal (4) is provided on one side of the sensor host (2), a second terminal (5) is provided on one side of the sensor slave (3), and a fixing bolt (6) is provided on one side of both the second terminal (5) and the first terminal (4). The sensor host (2) includes a main body (21) provided on one side of the drop-out fuse body (1), and a hook-type fixing seat (22) is provided at the bottom end of the main body (21).

2. The condition monitoring device for a drop-out fuse according to claim 1, characterized in that: The bottom of the hook-type fixing base (22) is provided with a current detection probe (211), and a voltage detection probe (212) is provided on the side of the bottom of the hook-type fixing base (22) near the current detection probe (211). A buckle (213) is provided on one side of the voltage detection probe (212).

3. The condition monitoring device for a drop-out fuse according to claim 2, characterized in that: The hook-type fixing seat (22) has a metal sheet (221) on its surface, and both ends of the hook-type fixing seat (22) are provided with sliders (222).

4. The condition monitoring device for a drop-out fuse according to claim 3, characterized in that: Both sliders (222) are provided with hooks (223) at their bottom ends, and the hook-type fixing seat (22) has a slot (224) on the side of its surface near the metal sheet (221).

5. The condition monitoring device for a drop-out fuse according to claim 1, characterized in that: The sensor slave (3) includes a slave part (31) disposed at the bottom end of the drop-out fuse body (1).

6. The condition monitoring device for a drop-out fuse according to claim 5, characterized in that: A terminal type fixing seat (32) is provided on one side of the slave part (31).

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