High-precision current sensor
By introducing a heat dissipation structure with heat-conducting blocks and fins into the current sensor, combined with a sealed and dustproof/waterproof design, the problem of current sensor burning out due to high temperature is solved, achieving high-precision current detection with safety and reliability.
Patent Information
- Application Number
- CN202423275557.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing current sensors, when detecting the current of surge arresters, suffer from excessive internal current, which leads to high temperatures that cannot be effectively dissipated. Prolonged use may cause the sensor to burn out, affecting the safety of the surge arrester.
A high-precision current sensor was designed, which uses multiple heat-conducting blocks and heat-conducting fins to transfer the heat from the wound coil to the heat sink and heat sink fins. The heat is then discharged through the lower and upper metal heat-conducting plates. Combined with a sealing mechanism and a steel wire filter, dust and water are prevented and waterproofed, ensuring the heat dissipation and sealing effect of the sensor.
This effectively reduces the temperature of the sensor, preventing it from burning out due to high temperatures, and improves the sensor's dustproof and waterproof performance, ensuring the safe and reliable operation of the surge arrester.
Smart Images
Figure CN223742596U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sensor technical field especially relates to a high accuracy current sensor. BACKGROUND
[0002] The lightning arrester is an indispensable part of many facilities and buildings, and needs to withstand high-frequency voltage in long-term work. It needs to withstand wind and sun in external use. Aging and leakage may occur after a long time. In order to avoid the influence of lightning arrester leakage on building facilities, it is necessary to install a current sensor. However, the current sensor installed for the lightning arrester cannot be well dispersed due to the high current in the lightning arrester, which may cause high temperature in the current sensor. Long-term use may cause the sensor to burn out, thereby affecting the safety of the lightning arrester. Therefore, the present application provides a high-precision current sensor. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at the problem that the current sensor in the background art cannot be well dispersed due to the passage of current, which may cause high temperature and burn out the sensor after long-term use, thereby affecting the safety of the lightning arrester. A high-precision current sensor is provided.
[0004] The technical scheme of the utility model: a high-precision current sensor, comprising a base and a heat dissipation mechanism fixed to the top end of the base, the heat dissipation mechanism comprising an anti-electric shell fixed to the top end of the base, the inner wall of the anti-electric shell is fixedly connected with a heat sink on both sides, the outer wall of the heat sink is fixedly connected with a heat dissipation fin on one side;
[0005] The inner wall of the anti-electric shell is provided with an inner cavity, and the inner wall of the inner cavity is provided with a coil structure.
[0006] The outer wall of the anti-electric shell is embedded with a sealing mechanism on both sides.
[0007] Optionally, the coil structure comprises a plurality of winding coils wound in the inner cavity, a plurality of heat conduction blocks are fixedly connected to the outer wall of the plurality of winding coils at equal intervals, a plurality of heat conduction fins are fixedly connected to the outer wall of the plurality of heat conduction blocks on both sides, the ends of the plurality of heat conduction fins away from the heat conduction blocks are connected with the heat sink, and the side of the heat sink is coated with a high-temperature resistant paint layer.
[0008] Optionally, the sealing mechanism comprises a lower metal heat conduction plate and an upper metal heat conduction plate embedded in the outer wall of the anti-electric shell on both sides, a first sealing ring is clamped on the outer wall of the two lower metal heat conduction plates and the upper metal heat conduction plate, and a second sealing ring is clamped on the inner wall of the anti-electric shell near the both ends.
[0009] Optionally, the inner wall of the anti-electric shell is fixedly connected with a steel wire filter screen between the second sealing ring and the heat-conducting fin, and the steel wire filter screen is located on one side of the lower metal heat-conducting plate and the upper metal heat-conducting plate.
[0010] Optionally, the outer wall of the base is fixedly connected with a wiring port on one side, and a plurality of wiring heads penetrate the inner wall of the wiring port.
[0011] Optionally, one end of the plurality of wiring heads is fixedly connected with a connecting wire, and the other end of the plurality of connecting wires away from the wiring head is fixedly connected to the winding coil.
[0012] Optionally, the outer wall of the anti-electric shell is fixedly connected with a fixing seat on both sides, a clamping rod penetrates the top end of the plurality of fixing seats, and a through hole penetrates the front end face of the anti-electric shell, and the front end face of the anti-electric shell is fixedly connected with a partition plate away from the through hole.
[0013] Compared with the prior art, the present application has at least one of the following beneficial technical effects:
[0014] The utility model discloses a plurality of heat-conducting blocks and heat-conducting fins transmit the heat generated by the winding coil to the heat-dissipating plate and the heat-dissipating fin, and the lower metal heat-conducting plate and the upper metal heat-conducting plate conduct the heat to the outside for dissipation, so that the device prevents burning due to excessive heat.
[0015] Further, the first sealing ring fixed to the outer wall of the lower metal heat-conducting plate and the second sealing ring fixed to the outer wall of the upper metal heat-conducting plate seal the outside of the sensor, and the steel wire filter screen filters dust, so that the dustproof and waterproof effect of the sensor is better. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a three-dimensional structure schematic diagram of a high-precision current sensor.
[0017] Figure 2 It is a heat-conducting plate connection structure schematic diagram of a high-precision current sensor.
[0018] Figure 3 It is a wiring port connection structure schematic diagram of a high-precision current sensor.
[0019] Figure 4 It is a winding coil connection structure schematic diagram of a high-precision current sensor.
[0020] Figure 5 It is a heat-dissipating mechanism structure schematic diagram of a high-precision current sensor.
[0021] Mark No. : 1, base; 2, anti-electric shell; 3, upper metal heat-conducting plate; 4, fixing seat; 5, clamping rod; 6, through hole; 7, wiring port; 8, wiring head; 9, partition plate; 10, inner cavity; 11, winding coil; 12, connecting wire; 13, heat-dissipating plate; 14, heat-dissipating fin; 15, heat-conducting clamping block; 16, heat-conducting fin; 17, high-temperature-resistant paint layer; 18, lower metal heat-conducting plate; 19, first sealing ring; 20, second sealing ring; 21, steel wire filter screen. DETAILED DESCRIPTION
[0022] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application.
[0023] The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application.
[0024] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.
[0025] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.
[0026] It should be noted that the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
[0027] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term " install " " link " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two elements inside the intercommunication. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according of specific circumstances.
[0028] Embodiment 1
[0029] As Figure 1 And Figure 5 The utility model discloses a high-precision current sensor, including base 1 and the heat dissipation mechanism of being fixed to the top of base 1, the heat dissipation mechanism includes the anticreep shell 2 of being fixed to the top of base 1, the inner wall both sides of anticreep shell 2 are fixedly connected with the heat dissipation plate 13, the outer wall one side of heat dissipation plate 13 is fixedly connected with the heat dissipation fin 14, a plurality of heat conduction blocks 15 are fixedly connected with a plurality of winding coils 11 on the outer wall at equal intervals, the outer wall both sides of a plurality of heat conduction blocks 15 are fixedly connected with heat dissipation fin 16, the end of a plurality of heat dissipation fins 16 away from heat conduction block 15 is connected with heat dissipation plate 13, the one side of heat dissipation plate 13 is coated with high-temperature resistant paint layer 17, the heat of winding coil 11 is transferred to heat dissipation plate 13 and heat dissipation fin 14 through a plurality of heat conduction blocks 15 and heat dissipation fin 16, so that the heat of winding coil 11 can be conducted cooling, the high-temperature resistant paint layer 17 mixed by heat-resistant resin made of organic silicon and heat-resistant pigment made of mica is coated on the one side of heat dissipation plate 13, so that heat dissipation plate 13 will not deform due to high temperature.
[0030] Need to supplement the description is as Figure 4 The inner wall of anticreep shell 2 is provided with an inner cavity 10, and the inner wall of the inner cavity 10 is provided with a coil structure, the coil structure comprising a plurality of winding coils 11 wound in the inner cavity 10, the winding coils 11 are arranged, so that the sensor can detect the current.
[0031] Need to additionally describe is as Figure 2 The outer wall of the anticreep shell 2 is embedded with a sealing mechanism, the sealing mechanism comprises a lower metal heat conduction plate 18 and an upper metal heat conduction plate 3 embedded on the outer wall of the anticreep shell 2, the outer wall of the two lower metal heat conduction plates 18 and the upper metal heat conduction plate 3 is clamped with a first sealing ring 19, the inner wall of the anticreep shell 2 is clamped with a second sealing ring 20 at the both ends, the first sealing ring 19 fixed on the outer wall of the lower metal heat conduction plate 18 and the second sealing ring 20 fixed on the outer wall of the upper metal heat conduction plate 3 are arranged to seal the outside of the sensor, and the steel wire screen 21 is used to filter dust, so that the dustproof and waterproof effect of the device is better.
[0032] In this embodiment, the heat generated by the winding coil 11 is transmitted to the heat dissipation plate 13 and the heat dissipation fins 14 through the plurality of heat-conducting blocks 15 and the heat-conducting fins 16, so that the heat of the winding coil 11 is cooled by conduction. The high-temperature-resistant paint layer 17 made by mixing the high-temperature-resistant resin made of silicone and the high-temperature-resistant pigment made of mica is coated on one side of the heat dissipation plate 13, so that the heat dissipation plate 13 will not deform due to high temperature. The winding coil 11 is provided, so that the sensor can detect the current. The first sealing ring 19 fixed to the outer wall of the lower metal heat-conducting plate 18 and the second sealing ring 20 fixed to the outer wall of the upper metal heat-conducting plate 3 are provided to seal the outside of the sensor. The steel wire filter screen 21 is provided to filter dust, so that the dustproof and waterproof effect of the device is better.
[0033] Embodiment 2
[0034] As shown in Figure 2 and Figure 5 , based on the basis of embodiment 1, the steel wire filter screen 21 is fixedly connected to the inner wall of the anti-electric shell 2 between the second sealing ring 20 and the heat-conducting fin 16. The steel wire filter screen 21 is located on one side of the lower metal heat-conducting plate 18 and the upper metal heat-conducting plate 3. By providing the steel wire filter screen 21, the dust from the outside will not enter the winding coil 11 inside the device, affecting the accuracy of the sensor.
[0035] In addition, as shown in Figure 3 , the outer wall of the base 1 is fixedly connected with the wire port 7 on one side. A plurality of wire terminals 8 are penetratingly arranged in the inner wall of the wire port 7. By providing a plurality of wire terminals 8, the sensor can be externally connected to external equipment.
[0036] It should be noted that, as shown in Figure 3 and Figure 4 , one end of the plurality of wire terminals 8 is fixedly connected with the connecting wire 12. The other end of the plurality of connecting wires 12 is fixedly connected to the winding coil 11. By providing the connecting wire 12, the current can be transmitted to the wire terminal 8.
[0037] And, as shown in Figure 1 , the outer wall of the anti-electric shell 2 is fixedly connected with the fixing seat 4 on both sides. The top end of the plurality of fixing seats 4 is penetratingly arranged with the clamping rod 5. By providing the clamping rod 5, the fixing seat 4 can be fixed, so as to fix the anti-electric shell 2. The front end face of the anti-electric shell 2 is penetratingly arranged with the through port 6. The front end face of the anti-electric shell 2 is fixedly connected with the partition plate 9 away from the through port 6. By providing the partition plate 9, the base 1 and the top anti-electric shell 2 can be separated.
[0038] The above specific embodiments are only several optional embodiments of the present application, and based on the technical scheme of the present application and the related enlightenment of the above embodiments, the person skilled in the art can make various alternative improvements and combinations on the above specific embodiments.
Claims
1. A high-precision current sensor comprising a base (1) and a heat dissipation mechanism fixed to the top end of the base (1), characterized in that: The heat dissipation mechanism comprises an anti-electric shell (2) fixed to the top end of the base (1), the inner wall of the anti-electric shell (2) is fixedly connected with heat dissipation plates (13) on both sides, and the outer wall of the heat dissipation plates (13) is fixedly connected with heat dissipation fins (14) on one side. The inner wall of the anti-electric shell (2) is provided with an inner cavity (10), and the inner wall of the inner cavity (10) is provided with a coil structure. The outer wall of the anti-electric shell (2) is embedded with a sealing mechanism on both sides.
2. A high-precision current sensor according to claim 1, characterized in that, The coil structure comprises a plurality of winding coils (11) wound in the inner cavity (10), a plurality of heat-conducting blocks (15) are fixedly connected to the outer wall of the winding coils (11) at equal intervals, heat-conducting fins (16) are fixedly connected to the outer wall of the heat-conducting blocks (15) on both sides, one end of the heat-conducting fins (16) away from the heat-conducting blocks (15) is connected with the heat dissipation plates (13), and one side of the heat dissipation plates (13) is coated with a high-temperature-resistant paint layer (17).
3. The high-precision current sensor of claim 1, wherein, The sealing mechanism comprises lower metal heat-conducting plates (18) and upper metal heat-conducting plates (3) embedded on the outer wall of the anti-electric shell (2) on both sides, the outer wall of the two lower metal heat-conducting plates (18) and upper metal heat-conducting plates (3) is clamped with a first sealing ring (19), and the inner wall of the anti-electric shell (2) is clamped with a second sealing ring (20) at the positions close to both ends.
4. The high-precision current sensor of claim 1, wherein, The inner wall of the anti-electric shell (2) is fixedly connected with a steel wire filter screen (21) between the second sealing ring (20) and the heat-conducting fins (16), and the steel wire filter screen (21) is located on one side of the lower metal heat-conducting plate (18) and the upper metal heat-conducting plate (3).
5. The high-precision current sensor of claim 1, wherein, The outer wall of the base (1) is fixedly connected with a wiring port (7) on one side, and the inner wall of the wiring port (7) penetrates a plurality of wiring heads (8).
6. A high-precision current sensor according to claim 5, characterized in that One end of the plurality of wiring heads (8) is fixedly connected with a connecting line (12), and the other end of the plurality of connecting lines (12) away from the wiring heads (8) is fixedly connected to the winding coils (11).
7. The high-precision current sensor of claim 1, wherein, The outer wall of the anti-electric shell (2) is fixedly connected with a fixing seat (4) on both sides, the top end of the plurality of fixing seats (4) penetrates a clamping rod (5), the front end face of the anti-electric shell (2) penetrates a penetration port (6), and the front end face of the anti-electric shell (2) away from the penetration port (6) is fixedly connected with a partition plate (9).