Magnetic energy pick-up sensor and DC power supply cabinet

Abstract

The utility model provides a kind of magnetic energy power pick-up sensor and direct current power cabinet, the magnetic energy power pick-up sensor includes main casing, metal mounting bracket and metal bolt, main casing is installed on metal mounting bracket by metal bolt;Main casing is provided with circuit cavity and installation through-hole, installation through-hole is through the top and bottom of main casing, circuit cavity and installation through-hole are communicated and set, metal bolt passes through installation through-hole;Circuit cavity is installed with circuit board, circuit board is provided with temperature measurement circuit and temperature measurement heat transfer element, temperature measurement heat transfer element is screwed with metal bolt, temperature measurement circuit is used to monitor the temperature of temperature measurement heat transfer element.The direct current power cabinet uses the magnetic energy power pick-up sensor of this.The magnetic energy power pick-up sensor of the utility model can improve temperature detection precision, and bolt adaptability can be improved simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, specifically to a magnetic energy harvesting sensor and a DC power supply cabinet that uses the magnetic energy harvesting sensor. Background Technology

[0002] In the field of power transmission, bolted fastening structures are commonly used for the connection points of critical equipment such as transformers, switchgear, and DC power supply cabinets. These bolted connections are weak points in equipment operation, and are highly susceptible to loosening due to long-term mechanical vibration, thermal expansion and contraction, oxidation and corrosion. Loose bolts lead to increased contact resistance at the connection points, generating additional Joule heat when current flows, causing abnormally high local temperatures. If not detected in time, this can lead to serious faults such as insulation aging, metal melting, or even arcing, causing not only equipment damage and production interruptions but also potential safety accidents such as fires and electric shocks, resulting in huge economic losses for enterprises and even threatening personnel lives. Therefore, real-time and reliable temperature monitoring of bolted connections in critical equipment is an important means of ensuring the safe and stable operation of industrial systems.

[0003] Currently, temperature measurement methods using temperature sensors in bolts typically involve attaching thermistors, thermocouples, or other sensors to the surface of the bolt or equipment housing using tape or adhesive. However, this method creates an air gap or an insulating layer formed by the adhesive between the sensor and the bolt. Air and most adhesives have extremely low thermal conductivity, severely hindering temperature conduction. Furthermore, vibrations and temperature changes in industrial environments can cause the adhesive layer to age and detach, leading to the sensor losing contact with the bolt and completely losing its temperature conduction capability, resulting in monitoring failure. Some solutions attempt to integrate the temperature sensor into the bolt for direct temperature measurement, but due to structural design limitations, these integrated bolts require custom manufacturing, are costly, and cannot be compatible with standard bolts in existing equipment, resulting in extremely poor versatility and hindering large-scale application.

[0004] Therefore, a more optimized sensor structure is needed. Utility Model Content

[0005] The primary objective of this invention is to provide a magnetic energy extraction sensor that can improve temperature detection accuracy and bolt compatibility.

[0006] The second objective of this invention is to provide a DC power supply cabinet that improves temperature detection accuracy and bolt compatibility.

[0007] To achieve the aforementioned first objective, the magnetic energy harvesting sensor provided by this utility model includes a main housing, a metal mounting bracket, and metal bolts. The main housing is mounted on the metal mounting bracket by the metal bolts. The main housing is provided with a circuit cavity and a mounting through hole, which penetrates through the top and bottom of the main housing. The circuit cavity and the mounting through hole are connected, and the metal bolts pass through the mounting through hole. A circuit board is installed inside the circuit cavity. The circuit board is provided with a temperature measuring circuit and a temperature measuring heat conduction component. The temperature measuring heat conduction component is screwed to the metal bolts, and the temperature measuring circuit is used to monitor the temperature of the temperature measuring heat conduction component.

[0008] As can be seen from the above scheme, the magnetic energy harvesting sensor of this utility model uses a metal mounting bracket to connect the bolt to be tested, and a temperature-sensing heat conduction component is set on the circuit board. The heat conduction component is screwed to the metal bolt, thereby achieving temperature conduction of the bolt to be tested through the metal mounting bracket, the metal bolt, and the temperature-sensing heat conduction component, improving the temperature detection accuracy. At the same time, using the metal mounting bracket to connect the bolt to be tested facilitates the adaptation to various types of bolts.

[0009] In a further embodiment, the circuit board is also equipped with a magnetic induction energy harvesting module and a battery management module. The magnetic induction energy harvesting module supplies power to the battery management module, which in turn supplies power to the circuit components of the circuit board.

[0010] It is evident that by setting up a magnetic induction energy harvesting module and a battery management module, it is easy to harvest magnetic energy using an electric field, eliminating the need for additional power wiring and reducing construction difficulty and cost.

[0011] In a further embodiment, a power push switch is also provided on the circuit board, and a switch through hole is provided on the side of the main housing near the metal mounting bracket. The pressing part of the power push switch passes through the switch through hole and abuts against the metal mounting bracket.

[0012] Therefore, by setting a switch through hole in the main housing, allowing the power switch pressing part to pass through the switch through hole and abut against the metal mounting bracket, the switch can be turned on to supply power immediately after the sensor is installed, thus preventing operators from forgetting to turn on the power switch after installation.

[0013] In a further embodiment, an indicator light is provided on the circuit board, and an indicator through hole is provided on the main housing, into which the indicator light is inserted.

[0014] Therefore, by setting indicator lights, the status of the sensor can be easily indicated so that users can be informed.

[0015] In a further design, a wireless communication circuit is also installed on the circuit board.

[0016] Therefore, by setting up a wireless communication circuit, wireless data transmission can be facilitated and wiring can be simplified.

[0017] In a further proposed solution, the temperature-sensing heat transfer element is a metal heat transfer element.

[0018] Therefore, it can be seen that by using metal heat conduction components, the temperature conduction speed can be increased, thereby improving the accuracy of detection.

[0019] In a further embodiment, an anti-slip pad is installed on the side of the main housing near the metal mounting bracket, and the anti-slip pad is in contact with the metal mounting bracket.

[0020] Therefore, by installing an anti-slip pad on the side of the main housing near the metal mounting bracket, the stability of the sensor can be ensured during installation.

[0021] In a further embodiment, the main housing includes an upper housing and a lower housing, which are detachably connected.

[0022] Therefore, it can be seen that by setting up detachable upper and lower housings, the main housing can facilitate the installation and removal of the sensor.

[0023] In a further design, the upper and lower housings are detachably connected via a snap-fit ​​structure.

[0024] Therefore, it can be seen that by setting up a snap-fit ​​structure to connect the upper and lower housings, the installation efficiency can be improved.

[0025] To achieve the second objective of this utility model, the DC power supply cabinet provided by this utility model is equipped with a magnetic energy harvesting sensor, which is the aforementioned magnetic energy harvesting sensor. Attached Figure Description

[0026] Figure 1 This is a structural diagram of an embodiment of the magnetic energy harvesting sensor of this utility model.

[0027] Figure 2 This is a structural cross-sectional view of an embodiment of the magnetic energy harvesting sensor of this utility model.

[0028] Figure 3 This is an exploded view of the structure of an embodiment of the magnetic energy harvesting sensor of this utility model.

[0029] Figure 4 This is an exploded view of the structure of an embodiment of the magnetic energy harvesting sensor of this utility model.

[0030] Figure 5 This is an exploded view of the main housing structure in an embodiment of the magnetic energy harvesting sensor of this utility model.

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0032] Example of a magnetic energy harvesting sensor:

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the magnetic energy harvesting sensor includes a main housing 1, a metal mounting bracket 2, metal bolts 3, and nuts 4. The main housing 1 is mounted on the metal mounting bracket 2 via the metal bolts 3. The metal mounting bracket 2 is provided with bolt holes 21 for connecting to the bolt to be measured and bolt through holes 22 for connecting to the metal bolts 3. The metal mounting bracket 2 is flat. Preferably, the metal mounting bracket 2 is made of copper, aluminum, or stainless steel.

[0034] The main housing 1 is provided with a circuit cavity 11 and a mounting through hole 12. The mounting through hole 12 extends through the top and bottom of the main housing 1. The circuit cavity 11 and the mounting through hole 12 are interconnected. A metal bolt 3 passes through the mounting through hole 12 and is screwed into a nut 4. Preferably, the metal bolt 3 is made of copper, aluminum, or stainless steel.

[0035] A circuit board 5 is installed inside the circuit cavity 11. The circuit board 5 is equipped with a temperature measuring circuit (not shown) and a temperature measuring heat conduction element 51. The temperature measuring heat conduction element 51 is screwed to a metal bolt 3. The temperature measuring circuit is used to monitor the temperature of the temperature measuring heat conduction element 51. The temperature measuring circuit is a well-known technology to those skilled in the art and will not be described in detail here. In this embodiment, the temperature measuring heat conduction element 51 is a metal heat conduction element. Preferably, the metal heat conduction element is made of copper, aluminum, or stainless steel. Using a metal heat conduction element can improve the temperature conduction speed and improve the detection accuracy.

[0036] In this embodiment, the circuit board 5 is also equipped with a magnetic induction energy harvesting module 6 and a battery management module (not shown). The magnetic induction energy harvesting module 6 supplies power to the battery management module, which in turn supplies power to the circuit components of the circuit board 5. The magnetic induction energy harvesting module 6 and the battery management module use known circuit modules, which will not be described in detail here. By setting up the magnetic induction energy harvesting module 6 and the battery management module, it is convenient to harvest magnetic energy using an electric field, eliminating the need for additional power wiring and reducing construction difficulty and cost.

[0037] In this embodiment, see Figure 4 The circuit board 5 also includes a power switch 52. A switch through-hole 14 is provided on the side of the main housing 1 near the metal mounting bracket 2. The pressing part 521 of the power switch 52 passes through the switch through-hole 14 and abuts against the metal mounting bracket 2. By providing a switch through-hole 14 on the main housing 1, allowing the pressing part 521 of the power switch 52 to pass through the switch through-hole 14 and abut against the metal mounting bracket 2, the switch can be turned on to supply power immediately after the sensor is installed, preventing operators from forgetting to turn on the power switch after installation.

[0038] In this embodiment, the circuit board 5 is also equipped with an indicator light (not shown) and a wireless communication circuit (not shown), and the main housing 1 is provided with an indicator through hole 16, in which the indicator light is inserted. By providing the indicator light, the status of the sensor can be easily indicated so that the user can be informed. By providing the wireless communication circuit, wireless data transmission can be easily carried out, wiring can be simplified, and remote monitoring by the user can be facilitated.

[0039] In this embodiment, an anti-slip pad 7 is installed on the side of the main housing 1 near the metal mounting bracket 2, and the anti-slip pad 7 is in contact with the metal mounting bracket 2. Preferably, the main housing 1 is provided with an anti-slip pad groove 15, and the anti-slip pad 7 is installed in the anti-slip pad groove 15, which can improve the stability of the anti-slip pad 7 during installation. By installing the anti-slip pad 7 on the side of the main housing 1 near the metal mounting bracket 2, the stability of the sensor can be easily ensured during installation. Preferably, the anti-slip pad 7 is made of silicone.

[0040] In this embodiment, see Figure 5 The main housing 1 includes an upper housing 13 and a lower housing 14, which are detachably connected. The detachable upper and lower housings 14 facilitate the installation and removal of the sensor. The upper and lower housings 13 and 14 are detachably connected via a snap-fit ​​structure. This snap-fit ​​structure improves installation efficiency. In this embodiment, the upper housing 13 has a locking block 131, and the lower housing 14 has a locking groove 141; the locking block 131 engages with the lower housing 14. Of course, the positions of the locking block 131 and the locking groove 141 can be interchanged, i.e., the locking block 131 can be located in the lower housing 14, and the locking groove 141 in the upper housing 13. Preferably, the main housing 1 is made of plastic.

[0041] As described above, the magnetic energy harvesting sensor of this utility model uses a metal mounting bracket 2 to connect the bolt to be tested, and a temperature-sensing heat conduction component 51 is provided on the circuit board 5. The heat conduction component is screwed to the metal bolt 3, thereby achieving temperature conduction of the bolt to be tested through the metal mounting bracket 2, the metal bolt 3, and the temperature-sensing heat conduction component 51, improving the temperature detection accuracy. Furthermore, using the metal mounting bracket 2 to connect the bolt to be tested facilitates compatibility with various types of bolts.

[0042] DC power supply cabinet example:

[0043] In this embodiment, the DC power supply cabinet is equipped with a magnetic energy harvesting sensor, which is the same magnetic energy harvesting sensor used in the above embodiment.

[0044] It should be noted that the above are only preferred embodiments of the present utility model, but the design concept of the utility model is not limited thereto. Any non-substantial modifications made to the present utility model using this concept shall also fall within the protection scope of the present utility model.

Claims

1. A magnetic energy harvesting sensor, characterized in that: It includes a main housing, a metal mounting bracket, and metal bolts, wherein the main housing is mounted on the metal mounting bracket by the metal bolts; The main housing is provided with a circuit cavity and a mounting through hole. The mounting through hole penetrates the top and bottom of the main housing. The circuit cavity and the mounting through hole are connected. The metal bolt passes through the mounting through hole. A circuit board is installed inside the circuit cavity. The circuit board is equipped with a temperature measuring circuit and a temperature measuring heat conduction component. The temperature measuring heat conduction component is screwed to the metal bolt. The temperature measuring circuit is used to monitor the temperature of the temperature measuring heat conduction component.

2. The magnetic energy harvesting sensor according to claim 1, characterized in that: The circuit board is also equipped with a magnetic induction energy harvesting module and a battery management module. The magnetic induction energy harvesting module supplies power to the battery management module, and the battery management module supplies power to the circuit components of the circuit board.

3. The magnetic energy harvesting sensor according to claim 2, characterized in that: The circuit board is also provided with a power push switch. The main housing is provided with a switch through hole on the side near the metal mounting bracket. The pressing part of the power push switch passes through the switch through hole and abuts against the metal mounting bracket.

4. The magnetic energy harvesting sensor according to any one of claims 1 to 3, characterized in that: The circuit board is also equipped with an indicator light, and the main housing is provided with an indicator through hole, into which the indicator light is inserted.

5. The magnetic energy harvesting sensor according to any one of claims 1 to 3, characterized in that: The circuit board is also equipped with a wireless communication circuit.

6. The magnetic energy harvesting sensor according to any one of claims 1 to 3, characterized in that: The temperature measuring heat conduction element is a metal heat conduction element.

7. The magnetic energy harvesting sensor according to any one of claims 1 to 3, characterized in that: An anti-slip pad is installed on the side of the main housing near the metal mounting bracket, and the anti-slip pad is in contact with the metal mounting bracket.

8. The magnetic energy harvesting sensor according to any one of claims 1 to 3, characterized in that: The main housing includes an upper housing and a lower housing, which are detachably connected.

9. The magnetic energy harvesting sensor according to claim 8, characterized in that: The upper housing and the lower housing are detachably connected by a snap-fit ​​structure.

10. A DC power supply cabinet, equipped with a magnetic energy harvesting sensor, characterized in that: The magnetic energy harvesting sensor is the same as that described in any one of claims 1 to 9.

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