State monitoring equipment for drop-out fuse

Abstract

The utility model relates to a state monitoring device for a drop-out fuse, which comprises a wireless passive sensing device and a reading device, the wireless passive sensing device comprises a base and a position monitoring module, and the base is arranged on a fuse tube of the fuse; the position monitoring module is arranged on the base, and the position monitoring module is used for monitoring and recording the position state of a fuse tube of the fuse; the reading device is in wireless connection with the position monitoring module, and the reading device collects recorded data of the position monitoring module through electromagnetic waves and supplies power. The wireless passive sensing device is simple in structure and reasonable in design, daily maintenance of the wireless passive sensing device is not needed, maintenance difficulty is low, power failure of a power grid is not needed during maintenance, maintenance work is convenient, a single reading device can carry out data acquisition and power supply on a plurality of wireless passive sensing devices in a unified mode, and construction cost of a large-scale distribution line is low.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment condition monitoring, and in particular to a condition monitoring device for a drop-out fuse. Background Technology

[0002] A drop-out fuse is a short-circuit protection switch widely used in power distribution line branches and distribution transformers. To monitor the status of fuses, several status monitoring devices have emerged on the market, such as the Chinese utility model patent with publication number CN215183618U, entitled "Drop-out Switch with Location Information Acquisition and Transmission Device." This patent features a control box on the drop-out switch, containing a current transformer, a status switch, and a main board. A push rod and a conductive rod are located on the stationary contact of the drop-out switch. The upper end of the push rod extends into the control box and contacts the status switch, while the upper end of the conductive rod extends out of the control box and connects to a terminal block. The current transformer is mounted on the conductive rod. Both the status switch and the current transformer are connected to the main control circuit on the main board via wiring. To power the main control circuit, the control box of this solution is equipped with a battery and a solar panel. A power management module is located on the main board. The solar panel, battery, and main control circuit are all connected to the power management module. The current transformer is connected to the main control circuit via a first line and to the power management module via a second line. This solution uses a composite power supply method of solar panel, battery, and current transformer, which overcomes the susceptibility of single solar panel power supply to weather conditions. However, this also results in higher production costs for individual location information acquisition and transmission devices, leading to higher construction costs for large-scale power distribution lines. Because the location information acquisition and transmission device integrates the battery and solar panel into the control box, the internal circuitry of the control box is an active circuit, requiring frequent daily maintenance. Furthermore, the control box is installed in a high-voltage environment, making maintenance of the information acquisition and transmission device very troublesome. Additionally, because the internal circuitry of the control box is directly connected to the power line of the drop-out fuse, daily maintenance of the location information acquisition and transmission device must be performed with the power off, affecting the normal power supply of the grid. Utility Model Content

[0003] The purpose of this utility model is to provide a status monitoring device for drop-out fuses. It has a simple structure and reasonable design. The wireless passive sensing device requires no daily maintenance, has low maintenance difficulty, does not require power grid disconnection during maintenance, and is relatively convenient to maintain. A single reading device can uniformly collect data and supply power to multiple wireless passive sensing devices, and the construction cost of large-scale power distribution lines is low.

[0004] The technical solution adopted in this utility model is: a status monitoring device for a drop-out fuse, including a wireless passive sensing device and a reading device. The wireless passive sensing device includes a base and a position monitoring module. The base is set on the fuse tube of the fuse. The position monitoring module is set on the base and is used to monitor and record the position status of the fuse tube of the fuse. The reading device is wirelessly connected to the position monitoring module. The reading device collects the recorded data of the position monitoring module through electromagnetic waves and provides power to it.

[0005] The working principle of this utility model is as follows:

[0006] In use, the position monitoring module measures and records the status information of the fuse tube's position. The reading device collects the recorded data from the position monitoring module via electromagnetic waves and supplies power to it. The reading device then transmits the collected recorded data to the remote monitoring center. When the fuse trips due to overload protection, the fuse tube falls downwards, and the status information measured by the position monitoring module changes. The remote monitoring center uses the measurement data from the position monitoring module to determine whether the corresponding fuse is malfunctioning, thus enabling remote monitoring of the fuse's status.

[0007] The wireless passive sensing device and the reading device are designed to transmit energy wirelessly. The wireless passive sensing device does not require an additional battery or power generation component. Furthermore, the wireless passive sensing device has no wired connection to the outside world, which means that the wireless passive sensing device does not require daily maintenance, reducing the maintenance difficulty of this status monitoring equipment. Moreover, the wireless passive sensing device can be disassembled or installed without disconnecting the power grid, making maintenance work more convenient.

[0008] When multiple fuses are installed at the same monitoring point, wireless passive sensing devices are installed on the fuse tubes of each fuse. The reading device collects data and supplies power to each wireless passive sensing device in a polling manner, so that multiple wireless passive sensing devices in the same monitoring point can be collected and powered by a single reading device, which reduces the construction cost of large-scale power distribution lines.

[0009] Furthermore, in the aforementioned condition monitoring device for a drop-out fuse, the position monitoring module includes an angle sensor, a recording chip, and a first passive antenna. The angle sensor, recording chip, and first passive antenna are mounted on a base. The angle sensor is used to measure the angle between the fuse tube and the horizontal plane. The recording chip is electrically connected to the angle sensor and records the measurement data of the angle sensor. The recording chip is also electrically connected to the first passive antenna and is wirelessly connected to the reading device via the first passive antenna.

[0010] Furthermore, in the aforementioned condition monitoring device for a drop-out fuse, the wireless passive sensing device further includes a temperature monitoring module. The temperature monitoring module includes a temperature sensing chip and a second passive antenna. The temperature sensing chip is mounted on a base and is used to measure and record the temperature of the fuse tube. The temperature sensing chip is electrically connected to the second passive antenna and is wirelessly connected to the reading device via the second passive antenna. The reading device collects the recorded data from the temperature sensing chip of the position monitoring module using electromagnetic waves and supplies power to it.

[0011] Furthermore, in the aforementioned condition monitoring device for a drop-out fuse, the wireless passive sensing device further includes an elastic clamping member. One end of the elastic clamping member is rotatably connected to the base, and the other end of the elastic clamping member has a tendency to move toward the base, so that the elastic clamping member and the base work together to clamp the fuse tube of the fuse, thereby positioning the wireless passive sensing device relative to the fuse tube of the fuse.

[0012] Furthermore, in the aforementioned condition monitoring device for a drop-out fuse, the elastic clamping component includes a rotating shaft and an elastic clamp. The rotating shaft is rotatably mounted on a base, and its rotation axis is parallel to the axis of the fuse tube. The elastic clamp includes a first torsion spring portion, a second torsion spring portion, a first arc-shaped portion, a second arc-shaped portion, and a connecting portion. The first and second torsion spring portions are rotatably fitted onto the rotating shaft. One end of each of the first and second torsion spring portions rests against the base, and the other end of the first torsion spring portion is connected to one end of the first arc-shaped portion. The other end of the torsion spring is connected to one end of the second arc-shaped part. Both the first and second arc-shaped parts are arc-shaped structures arranged around the fuse tube of the fuse. The other end of the first arc-shaped part and the other end of the second arc-shaped part are connected by a connecting part. Under the action of the first and second torsion springs, the first arc-shaped part, the second arc-shaped part and the connecting part tend to move towards the direction of the base, so that the first arc-shaped part and the base work together to clamp the fuse tube of the fuse, and the second arc-shaped part and the base work together to clamp the fuse tube of the fuse.

[0013] Furthermore, in the aforementioned condition monitoring device for a drop-out fuse, the base includes a base plate and a mounting cover. The mounting cover is detachably mounted on the base plate, and the mounting cover and the base plate enclose a mounting cavity. The position monitoring module is disposed within the mounting cavity.

[0014] Furthermore, in the aforementioned condition monitoring device for a drop-out fuse, the reading device includes a reading antenna and a data acquisition terminal; the data acquisition terminal is wirelessly connected to the wireless passive sensing device via the reading antenna, and is used to collect the recorded data from the position monitoring module and temperature monitoring module of the wireless passive sensing device, and transmit the recorded data to a remote monitoring center.

[0015] Furthermore, in the aforementioned condition monitoring device for a drop-out fuse, the reading device further includes a power storage module and a solar power generation module. The power storage module is electrically connected to the data acquisition terminal, and the solar power generation module is electrically connected to the power storage module.

[0016] Furthermore, in the aforementioned condition monitoring device for a drop-out fuse, the reading device further includes a wireless module, which is electrically connected to the data acquisition terminal and transmits data to a remote monitoring center via a mobile communication network.

[0017] Furthermore, in the aforementioned condition monitoring device for a drop-out fuse, the reading device further includes a waterproof mounting box, and the data acquisition terminal is installed inside the waterproof mounting box.

[0018] The beneficial effects of this utility model are:

[0019] (1) The wireless passive sensing device and the reading device are designed to transmit energy wirelessly. The wireless passive sensing device does not need to be equipped with an additional battery or power generation component. Furthermore, the wireless passive sensing device has no wire connection to the outside world, so the wireless passive sensing device does not require daily maintenance, which reduces the maintenance difficulty of this status monitoring equipment. Moreover, the wireless passive sensing device does not need to disconnect the power grid when it is disassembled or installed, making maintenance work more convenient.

[0020] (2) A single reading device can collect data and supply power to multiple wireless passive sensing devices in a unified manner. It is suitable for use scenarios where multiple fuses are installed in the same monitoring point, and the construction cost of large-scale power distribution lines is relatively low.

[0021] (3) The wireless passive sensing device is fixed to the fuse tube of the fuse by elastic clamping parts. Workers can complete the disassembly or installation work in a non-contact manner by using special installation tools, which is convenient and safe to operate. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of an embodiment;

[0023] Figure 2 This is an assembly structure diagram of the wireless passive sensing device and fuse as shown in the embodiment.

[0024] Figure 3 A three-dimensional structural diagram of the wireless passive sensing device in an embodiment;

[0025] Figure 4 This is an exploded view of the assembly of the wireless passive sensing device in an embodiment.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Wireless passive sensing device; 11-Base; 111-Base plate; 112-Mounting cover; 12-Position monitoring module; 121-Angle sensor; 122-Recording chip; 123-First passive antenna; 13-Temperature monitoring module; 131-Temperature measuring chip; 132-Second passive antenna; 14-Elastic clamping component; 141-Rotating shaft; 142-Elastic clamp; 1421-First torsion spring part; 1422-Second torsion spring part; 1423-First arc-shaped part; 1424-Second arc-shaped part; 1425-Connecting part; 2-Reading device; 21-Reading antenna; 22-Solar power generation module; 23-Waterproof mounting box; 3-Fuse; 31-Fuse tube. Detailed Implementation

[0028] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0029] like Figures 1 to 4 An embodiment of a status monitoring device for a drop-out fuse includes three wireless passive sensors 1 and a reading device 2. The three wireless passive sensors 1 are configured one-to-one with three fuses 3. Each wireless passive sensor 1 includes a base 11 and a position monitoring module 12. The base 11 is mounted on the fuse tube 31 of the fuse 3. The position monitoring module 12 is mounted on the base 11 and is used to monitor and record the position status of the fuse tube 31 of the fuse 3. The reading device 2 is wirelessly connected to the position monitoring module 12 and collects the recorded data from the position monitoring module 12 via electromagnetic waves and supplies power to it.

[0030] The working principle of this embodiment is as follows:

[0031] In use, the position monitoring module 12 measures and records the position status information of the fuse tube 31 of the fuse 3. The reading device 2 collects the recorded data of the position monitoring module 12 through electromagnetic waves and supplies power. The reading device 2 transmits the collected recorded data to the remote monitoring center. When the fuse 3 is disconnected due to overload protection, the fuse tube 31 of the fuse 3 falls downward. The status information measured by the position monitoring module 12 will change. The remote monitoring center determines whether the corresponding fuse 3 is abnormal based on the measurement data of the position monitoring module 12, so as to realize remote monitoring of the status of the fuse 3.

[0032] The wireless passive sensing device 1 and the reading device 2 are designed to transmit energy wirelessly. The wireless passive sensing device 1 does not require an additional battery or power generation component. Furthermore, the wireless passive sensing device 1 has no wire connection to the outside world, which means that the wireless passive sensing device 1 does not require daily maintenance, reducing the maintenance difficulty of this status monitoring equipment. Moreover, the wireless passive sensing device 1 can be disassembled or installed without disconnecting the power grid, making maintenance work more convenient.

[0033] In this embodiment, three fuses 3 are installed at the monitoring point. Wireless passive sensing devices 1 are installed on the fuse tube 31 of each fuse 3. The reading device 2 performs data interaction and power supply to each wireless passive sensing device 1 in a polling manner, so as to realize that multiple wireless passive sensing devices 1 in the same monitoring point are uniformly collected and powered by one reading device 2, which reduces the construction cost in large-scale power distribution line scenarios.

[0034] like Figure 4 As shown, the position monitoring module 12 includes an angle sensor 121, two recording chips 122, and two first passive antennas 123. The two first passive antennas 123 are mounted on the base 11, and the two recording chips 122 are mounted on the two first passive antennas 123 in a one-to-one correspondence. The two recording chips 122 and the two first passive antennas 123 are electrically connected in a one-to-one correspondence. The angle sensor 121 is mounted on one of the first passive antennas 123 and is electrically connected to the two recording chips 122. The angle sensor 121 is used to measure the angle between the fuse tube 31 of the fuse 3 and the horizontal plane. The recording chips 122 record the measurement data of the angle sensor 121. The recording chips 122 are wirelessly connected to the reading device 2 through the first passive antennas 123. In use, the angle sensor 121 transmits the measured angle information to the recording chip 122 for recording. The reading device 2 collects the angle information recorded by the recording chip 122 and transmits it to the remote monitoring center. When the fuse 3 is disconnected due to overload protection, the fuse tube 31 of the fuse 3 falls downward, and the angle between the fuse tube 31 of the fuse 3 and the horizontal plane changes. The remote monitoring center determines whether the fuse tube 31 of the fuse 3 is in a falling state based on the received angle information.

[0035] like Figure 4As shown, the wireless passive sensing device 1 also includes a temperature monitoring module 13. The temperature monitoring module 13 includes a temperature measuring chip 131 and a second passive antenna 132. The temperature measuring chip 131 is disposed on the base 11 and is used to measure and record the temperature of the fuse tube 31 of the fuse 3. The temperature measuring chip 131 is electrically connected to the second passive antenna 132 and is wirelessly connected to the reading device 2 through the second passive antenna 132. The reading device 2 collects the recorded data of the temperature measuring chip 131 of the position monitoring module 12 through electromagnetic waves and supplies power to it. In use, the temperature measuring chip 131 measures and records the temperature information of the fuse tube 31 of the fuse 3, and the reading device 2 collects the temperature information recorded by the recording chip 122 and transmits it to the remote monitoring center. When the fuse 3 is in an overload state, the temperature of the fuse tube 31 of the fuse 3 rises due to the increase in current. The remote monitoring center determines whether the fuse 3 is in an overload state based on the received temperature information. By adding the temperature monitoring module 13, when the fuse 3 is in an overload state and the fuse tube 31 fails to melt and falls, this status monitoring device can still monitor the fault status of the fuse 3.

[0036] like Figure 2 , Figure 3 and Figure 4As shown, the wireless passive sensing device 1 further includes an elastic clamping member 14, which includes a rotating shaft 141 and an elastic clamp 142. The rotating shaft 141 is rotatably mounted on the base 11, and the rotation axis of the rotating shaft 141 is parallel to the axis of the fuse tube 31 of the fuse 3. The elastic clamp 142 includes a first torsion spring portion 1421, a second torsion spring portion 1422, a first arc-shaped portion 1423, a second arc-shaped portion 1424, and a connecting portion 1425. The first torsion spring portion 1421 and the second torsion spring portion 1422 are rotatably fitted onto the rotating shaft 141. One end of each of the first torsion spring portion 1421 and the second torsion spring portion 1422 abuts against the base 11, and the other end of the first torsion spring portion 1421 is connected to one end of the first arc-shaped portion 1423. The other end of the first torsion spring portion 1421 is connected to the second arc-shaped portion 1424. One end of the arc-shaped portion 1424 is connected to the first arc-shaped portion 1423 and the second arc-shaped portion 1424, which are both arc-shaped structures arranged circumferentially along the fuse tube 31 of the fuse 3. The other end of the first arc-shaped portion 1423 and the other end of the second arc-shaped portion 1424 are connected by the connecting portion 1425. Under the action of the first torsion spring portion 1421 and the second torsion spring portion 1422, the first arc-shaped portion 1423, the second arc-shaped portion 1424 and the connecting portion 1425 tend to move towards the base 11, so that the first arc-shaped portion 1423 and the base 11 cooperate to clamp the fuse tube 31 of the fuse 3, and the second arc-shaped portion 1424 and the base 11 cooperate to clamp the fuse tube 31 of the fuse 3, so that the wireless passive sensing device 1 is positioned relative to the fuse tube 31 of the fuse 3. With this structure, workers can disassemble or install the wireless passive sensing device 1 in a non-contact manner using special installation tools, which is more convenient and safer and reduces the difficulty of modifying the existing fuse 3.

[0037] like Figure 2 , Figure 3 and Figure 4 As shown, the base 11 includes a base plate 111 and a mounting cover 112. The mounting cover 112 is detachably mounted on the base plate 111, and the mounting cover 112 and the base plate 111 enclose a mounting cavity. The position monitoring module 12 and the temperature monitoring module 13 are both disposed within the mounting cavity. This design prevents the position monitoring module 12 and the temperature monitoring module 13 from being directly exposed to the external environment, thus providing dust protection.

[0038] like Figure 1As shown, the reading device 2 includes a reading antenna 21 and a data acquisition terminal. The reading antenna 21 is wirelessly connected to the wireless passive sensing device 1. The data acquisition terminal is electrically connected to the reading antenna 21 and is used to collect the recorded data from the position monitoring module 12 and temperature monitoring module 13 of the wireless passive sensing device 1, and transmit the recorded data to a remote monitoring center. In use, one reading antenna 21 cyclically collects data and supplies power to each wireless passive sensing device 1 within a monitoring point in a polling manner. Multiple adjacent monitoring points are networked to form a monitoring area. One data acquisition terminal is connected to each reading antenna 21 within a monitoring area, enabling the data acquisition terminal to collect data from the wireless passive sensing devices 1 within multiple monitoring points. This networking method can further reduce the construction cost of large-scale power distribution lines.

[0039] like Figure 1 As shown, the reading device 2 also includes a power storage module and a solar power generation module 22. The power storage module is electrically connected to the data acquisition terminal, and the solar power generation module 22 is electrically connected to the power storage module. This configuration allows the status monitoring device to operate normally without a power grid. Even when the power grid fails and power is lost, the device can still indicate the fault location, facilitating troubleshooting by workers.

[0040] The reading device 2 also includes a wireless module, which is electrically connected to the data acquisition terminal. The wireless module transmits data with the remote monitoring center via a mobile communication network. This design allows the reading device 2 to connect wirelessly to the remote monitoring center via a line, making installation more convenient.

[0041] like Figure 1 As shown, the reading device 2 also includes a waterproof mounting box 23, inside which the data acquisition terminal, power storage module, and wireless module are housed. This design prevents the data acquisition terminal, power storage module, and wireless module from being directly exposed to the external environment, thus providing waterproof and dustproof protection.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, this utility model can have various modifications, combinations, and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A condition monitoring device for a drop-out fuse, characterized in that: It includes a wireless passive sensing device and a reading device. The wireless passive sensing device includes a base and a position monitoring module. The base is set on the fuse tube of the fuse. The position monitoring module is set on the base and is used to monitor and record the position status of the fuse tube of the fuse. The reading device is wirelessly connected to the position monitoring module. The reading device collects the recorded data of the position monitoring module through electromagnetic waves and supplies power to it.

2. The condition monitoring device for a drop-out fuse as described in claim 1, characterized in that: The position monitoring module includes an angle sensor, a recording chip, and a first passive antenna. The angle sensor, recording chip, and first passive antenna are mounted on a base. The angle sensor is used to measure the angle between the fuse tube of the fuse and the horizontal plane. The recording chip is electrically connected to the angle sensor and records the measurement data of the angle sensor. The recording chip is also electrically connected to the first passive antenna and is wirelessly connected to the reading device through the first passive antenna.

3. The condition monitoring device for a drop-out fuse as described in claim 1, characterized in that: The wireless passive sensing device also includes a temperature monitoring module, which includes a temperature measuring chip and a second passive antenna. The temperature measuring chip is mounted on the base and is used to measure and record the temperature of the fuse tube of the fuse. The temperature measuring chip is electrically connected to the second passive antenna and is wirelessly connected to the reading device through the second passive antenna. The reading device collects the recorded data of the temperature measuring chip of the position monitoring module through electromagnetic waves and supplies power to it.

4. The condition monitoring device for a drop-out fuse as described in claim 1, characterized in that: The wireless passive sensing device also includes an elastic clamping member. One end of the elastic clamping member is rotatably connected to the base, and the other end of the elastic clamping member has a tendency to move in the direction of the base, so that the elastic clamping member and the base work together to clamp the fuse tube of the fuse, thereby positioning the wireless passive sensing device relative to the fuse tube of the fuse.

5. The condition monitoring device for a drop-out fuse as described in claim 4, characterized in that: The elastic clamping component includes a rotating shaft and an elastic clamp. The rotating shaft is rotatably mounted on a base, and its rotation axis is parallel to the axis of the fuse tube of the fuse. The elastic clamp includes a first torsion spring portion, a second torsion spring portion, a first arc-shaped portion, a second arc-shaped portion, and a connecting portion. The first and second torsion spring portions are rotatably fitted onto the rotating shaft. One end of each of the first and second torsion spring portions rests against the base, and the other end of the first torsion spring portion is connected to one end of the first arc-shaped portion and the other end of the second arc-shaped portion. One end of the part is connected, and the first arc-shaped part and the second arc-shaped part are both arc-shaped structures arranged around the fuse tube of the fuse. The other end of the first arc-shaped part and the other end of the second arc-shaped part are connected by a connecting part. Under the action of the first torsion spring part and the second torsion spring part, the first arc-shaped part, the second arc-shaped part and the connecting part tend to move towards the direction of the base, so that the first arc-shaped part and the base cooperate to clamp the fuse tube of the fuse, and the second arc-shaped part and the base cooperate to clamp the fuse tube of the fuse.

6. The condition monitoring device for a drop-out fuse as described in claim 1, characterized in that: The base includes a base plate and a mounting cover. The mounting cover is detachably mounted on the base plate, and the mounting cover and the base plate enclose a mounting cavity. The position monitoring module is disposed in the mounting cavity.

7. The condition monitoring device for a drop-out fuse as described in claim 1, characterized in that: The reading device includes a reading antenna and a data acquisition terminal. The data acquisition terminal is wirelessly connected to the wireless passive sensing device through the reading antenna. The data acquisition terminal is used to collect the recorded data from the location monitoring module and temperature monitoring module of the wireless passive sensing device and transmit the recorded data to the remote monitoring center.

8. The condition monitoring device for a drop-out fuse as described in claim 7, characterized in that: The reading device also includes a power storage module and a solar power generation module. The power storage module is electrically connected to the data acquisition terminal, and the solar power generation module is electrically connected to the power storage module.

9. The condition monitoring device for a drop-out fuse as described in claim 7, characterized in that: The reading device also includes a wireless module, which is electrically connected to the data acquisition terminal and transmits data with the remote monitoring center through a mobile communication network.

10. The condition monitoring device for a drop-out fuse as described in claim 7, characterized in that: The reading device also includes a waterproof mounting box, and the data acquisition terminal is installed inside the waterproof mounting box.

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