A synchronous current sensor for busbars

Abstract

This invention relates to the field of sensor technology and discloses a synchronous current sensor for busbars, comprising: a sensor, and an externally disposed centering mounting assembly, the centering mounting assembly enabling the copper busbar to be centered relative to the sensor; the centering mounting assembly includes: a clamp, a pad, a mounting plate, a first lead screw, a slider, a clamping plate, a roller, a bolt, a drive assembly, and a fixing assembly. This invention, through the centering mounting assembly, enables the copper busbar to be centered relative to the sensor, allowing for more accurate sensing. Furthermore, it preheats the roller and copper sheet within the centering mounting assembly, causing water droplets on the surface of the insulating sleeve to evaporate rapidly when the roller and copper sheet on the mounting plate come into contact with the insulating sleeve, ensuring the contact area between the insulating sleeve and the roller and copper sheet remains dry, thus preventing slippage and ensuring the smooth operation of the centering mounting assembly.

Description

Technical Field

[0001] This invention belongs to the field of sensor technology, and specifically relates to a synchronous current sensor for busbars. Background Technology

[0002] Busbars (also known as busbars or busbars) are conductive conductors in power systems used to collect, distribute, and transmit large currents. They are widely used in high and low voltage switchgear, substations, new energy power plants, and other scenarios. They are the core "current channels" connecting electrical equipment such as transformers, circuit breakers, instrument transformers, and capacitors.

[0003] In order to monitor the busbar in real time, a synchronous current sensor is installed on its exterior during use. The synchronous current sensor is used to monitor abnormal current transmission of the busbar. However, when installing the existing synchronous current sensor, the busbar passing through its interior may not be centered inside the sensor. If the copper busbar is off-center, it may cause uneven magnetic field distribution, resulting in measurement errors or malfunctions of protection.

[0004] Therefore, it is necessary to invent a synchronous current sensor for busbars to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a synchronous current sensor for busbars, thereby resolving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a synchronous current sensor for a busbar, comprising: a sensor, wherein a centering mounting component is provided on the outside of the sensor, the centering mounting component enabling the copper busbar to be centered relative to the sensor; The central mounting assembly includes: clamps, pads, mounting plates, a first lead screw, a slider, a clamping plate, a roller, bolts, a drive assembly, and a fixing assembly; The clamp is located outside the sensor and is fixedly connected to the sensor by bolts. The pad is symmetrically fixedly installed on the top of the clamp. The mounting plate is slidably mounted on the pad. The driving assembly can drive the mounting plate to move horizontally. The inner side of the mounting plate is provided with a sliding groove. The first lead screw is rotatably installed in the sliding groove. The slider is symmetrically threaded outside the first lead screw. The clamp is fixedly installed on one side of the slider. The roller is equidistantly rotatably installed on the inner side of the clamp. The fixing assembly can connect the sensor to the installation area.

[0007] Furthermore, the drive assembly includes: a second lead screw, a side plate, a rotating rod, a sprocket, and a chain belt; The top of the pad has a horizontal groove, the second lead screw is rotatably installed in the horizontal groove, the mounting plate is threaded onto the outside of the second lead screw, one end of the second lead screw extends to the outside of the horizontal groove, the side plates are symmetrically fixedly installed on the top of the clamp, the rotating rod is rotatably installed on the side plates, the sprockets are respectively fixedly installed on one end of the second lead screw and both ends of the rotating rod, and adjacent sprockets are connected by a chain belt.

[0008] Furthermore, the fixing component includes: a ball joint, a ball joint sleeve, a telescopic connection component, a positioning component, and a base plate; One end of the ball head is fixedly connected to the sensor. The ball head is rotatably installed inside the ball head sleeve. The ball head sleeve is connected to the base plate through a telescopic connecting assembly. The positioning assembly is set on the ball head sleeve and is used to position the ball head.

[0009] Furthermore, the telescopic connection assembly includes: a rectangular column, a sleeve, and a fastening rod; The sleeve is symmetrically fixedly installed on the base plate, the rectangular column is slidably disposed inside the sleeve, one end of the rectangular column is fixedly connected to the ball head sleeve, the fastening rod is threadedly connected to the outside of the sleeve, and one end of the fastening rod extends into the inside of the sleeve.

[0010] Furthermore, the positioning component includes: a bracket, a rotating rod, a clamping block, and a rubber pad; The bracket is fixedly installed on the top of the ball head sleeve. The top of the ball head sleeve has an opening corresponding to the clamping block. The rotating rod is threaded onto the bracket. The bottom of the rotating rod extends to the bottom of the bracket and is rotatably connected to the clamping block. The rubber pad is set at the bottom of the clamping block.

[0011] Furthermore, the clamping plate has a groove corresponding to the roller, and the roller is rotatably installed in the groove. The mounting plate has symmetrically formed long grooves on the side near the clamping plate. Both the groove and the long groove are equipped with heating plates. The heating plate in the groove is in contact with the roller. A copper sheet is fixedly installed on the mounting plate. The copper sheet closes the long groove and is in contact with the heating plate. The roller is made of copper, and the surface of the copper sheet is flush with the side of the mounting plate near the clamping plate.

[0012] Furthermore, the first lead screw is symmetrically provided with threads in opposite directions, and the two second lead screws are provided with threads in opposite directions.

[0013] Furthermore, the clamp and the sensor are arranged parallel to each other.

[0014] The technical effects and advantages of this invention are as follows: 1. The present invention enables the copper busbar to be installed in the center relative to the sensor by setting a central mounting component, so that the sensor can perform sensing more accurately; 2. This invention can preheat the roller and copper sheet inside the centering mounting assembly, so that when the roller and the copper sheet on the mounting plate come into contact with the insulating sleeve, the water droplets on the surface of the insulating sleeve can be heated and evaporated quickly, ensuring that the contact area between the insulating sleeve and the roller and copper sheet can be dry, thereby avoiding slippage and ensuring that the centering mounting assembly can work smoothly. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a synchronous current sensor for a busbar according to an embodiment of the present invention is shown. Figure 1 ; Figure 2 A cross-sectional view of the clamp according to an embodiment of the present invention is shown; Figure 3 An embodiment of the present invention is shown. Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 A schematic diagram of the clamp structure according to an embodiment of the present invention is shown; Figure 5 An embodiment of the present invention is shown. Figure 4 Enlarged structural diagram at point B; Figure 6 A schematic diagram of the structure of a synchronous current sensor for a busbar according to an embodiment of the present invention is shown. Figure 2 ; In the diagram: 1. Sensor; 2. Clamp; 3. Pad; 4. Mounting plate; 5. First lead screw; 6. Slider; 7. Clamping plate; 8. Roller; 9. Second lead screw; 10. Side plate; 11. Rotating rod; 12. Sprocket; 13. Chain belt; 14. Bolt; 15. Ball head rod; 16. Ball head sleeve; 17. Rectangular column; 18. Sleeve; 19. Fastening rod; 20. Base plate; 21. Bracket; 22. Rotating rod; 23. Clamping block; 24. Heating plate; 25. Copper sheet. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0017] This invention provides a synchronous current sensor for busbars, such as... Figures 1 to 6 As shown, it includes: sensor 1, and a centering mounting component is provided on the outside of sensor 1. The centering mounting component allows the copper busbar to be installed in the center relative to sensor 1. Sensor 1 is a synchronous current sensor for busbar in the prior art. The centrally mounted components include: clamp 2, pad 3, mounting plate 4, first lead screw 5, slider 6, clamping plate 7, roller 8, bolt 14, drive assembly, and fixing assembly; The clamp 2 is set outside the sensor 1 and is fixedly connected to the sensor 1 by bolts 14. The pad 3 is symmetrically fixedly installed on the top of the clamp 2. The mounting plate 4 is slidably set on the pad 3. The drive assembly can drive the mounting plate 4 to move horizontally. The inner side of the mounting plate 4 is provided with a sliding groove. The first lead screw 5 is rotatably installed in the sliding groove. One end of the first lead screw 5 extends to the outside of the sliding groove. The slider 6 is symmetrically threaded on the outside of the first lead screw 5. The clamp 7 is fixedly installed on one side of the slider 6. The roller 8 is equidistantly rotatably installed on the inner side of the clamp 7. The fixing assembly can connect the sensor 1 to the installation area. The clamp 2 is set in U shape.

[0018] In use, the bolt 14 is separated from the sensor 1, thus disconnecting the clamp 2 from the sensor 1. The clamp 2 is then held close to the copper busbar, which is now inside the clamp 2. The mounting plate 4 is driven horizontally by the drive assembly, causing both mounting plates 4 to move towards the copper busbar. The mounting plates 4, along with the slider 6, clamp 7, and roller 8, move accordingly, positioning the clamp 7 on either side of the copper busbar. At this point, the mounting plates 4 are not in contact with the copper busbar. The movement of the mounting plates 4 is then stopped, and the first lead screw 5 is rotated clockwise, causing the slider 6, clamp 7, and roller 8 to move. This brings the two opposing clamp 7 closer together, until the roller 8 finally contacts the insulating sleeve on the surface of the copper busbar. The movement of the mounting plates 4 continues, and as the mounting plates 4 move, the roller 8 rolls along the insulating sleeve on the surface of the copper busbar, until the mounting plates 4 finally contact the surface of the copper busbar. When the insulating sleeves come into contact, the friction between the roller 8 and the insulating sleeve on the surface of the copper busbar, as well as the friction between the mounting plate 4 and the insulating sleeve on the surface of the copper busbar, prevents the roller 8, clamp 7, and clamp 2 from moving vertically. The clamp 2 is fixed in place because the clamp 7 and roller 8 work together to prevent it from moving horizontally. Then, the clamp 2 is connected to the sensor 1 again by bolt 14. The sensor 1 is connected to the installation area by the fixing assembly. Rotating the first lead screw 5 in the opposite direction moves the clamp 7 away from each other. Then, the mounting plate 4 is driven to reset, causing the roller 8 to leave the copper busbar. This prevents the clamp 7 and roller 8 from affecting the heat dissipation of the copper busbar. At this point, the installation of the sensor 1 is complete. The copper busbar is now centered relative to the sensor 1, allowing the sensor 1 to perform more accurate sensing.

[0019] like Figures 1 to 3 As shown, the drive assembly includes: a second lead screw 9, a side plate 10, a rotating rod 11, a sprocket 12, and a chain belt 13; The top of the pad 3 has a horizontal groove, the second lead screw 9 is rotatably installed in the horizontal groove, the mounting plate 4 is threaded on the outside of the second lead screw 9, one end of the second lead screw 9 extends to the outside of the horizontal groove, the side plate 10 is symmetrically fixedly installed on the top of the clamp 2, the rotating rod 11 is rotatably installed on the side plate 10, and the sprockets 12 are respectively fixedly installed on one end of the second lead screw 9 and both ends of the rotating rod 11. Adjacent sprockets 12 are connected by a chain belt 13.

[0020] Rotating the rotating rod 11 in the forward direction causes it to rotate the connected sprocket 12, which in turn causes the chain belt 13 to rotate another sprocket 12 and the second lead screw 9. The second lead screw 9 moves the mounting plate 4 towards the copper busbar. Conversely, rotating the rotating rod 11 in the reverse direction can reset the mounting plate 4.

[0021] like Figure 1 and Figure 6 As shown, the fixing components include: ball head 15, ball head sleeve 16, telescopic connection assembly, positioning assembly, and base plate 20; One end of the ball head rod 15 is fixedly connected to the sensor 1. The ball head rod 15 is rotatably installed inside the ball head sleeve 16. The ball head sleeve 16 is connected to the base plate 20 through a telescopic connecting assembly. The positioning assembly is set on the ball head sleeve 16 for positioning the ball head rod 15.

[0022] After clamp 2 is fixed, sensor 1 is also fixed after being connected to clamp 2. At this time, rotate base plate 20 to rotate telescopic connecting assembly and ball head sleeve 16, so that base plate 20 can be adjusted to be parallel to the surface of the required installation area. Then, adjust the position of base plate 20 through telescopic connecting assembly so that base plate 20 contacts the required installation area. Then fix base plate 20 to the required installation area. The fixing method can be bolts and nuts. Then, fix ball head rod 15 through positioning assembly to complete the fixing of sensor 1. When clamp plate 7 and roller 8 are reset, sensor 1 can still be fixed.

[0023] like Figure 6 As shown, the telescopic connection assembly includes: a rectangular column 17, a sleeve 18, and a fastening rod 19; Sleeve 18 is symmetrically fixedly installed on base plate 20. Rectangular column 17 is slidably disposed inside sleeve 18. One end of rectangular column 17 is fixedly connected to ball head sleeve 16. Fastening rod 19 is threadedly connected to the outside of sleeve 18. One end of fastening rod 19 extends into sleeve 18.

[0024] Pull the base plate 20 to move it away from the ball head sleeve 16, thereby adjusting the position of the base plate 20 so that it can contact the required installation area. Then, rotate the fastening rod 19 forward so that its end abuts against the rectangular post 17. The friction between the fastening rod 19 and the rectangular post 17 is used to fix the rectangular post 17, thereby fixing the ball head sleeve 16.

[0025] like Figure 6 As shown, the positioning assembly includes: bracket 21, rotary rod 22, clamping block 23, and rubber pad; The bracket 21 is fixedly installed on the top of the ball head sleeve 16. The top of the ball head sleeve 16 has an opening corresponding to the clamping block 23. The rotating rod 22 is threadedly connected to the bracket 21. The bottom of the rotating rod 22 extends to the bottom of the bracket 21 and is rotatably connected to the clamping block 23. The rubber pad is set at the bottom of the clamping block 23.

[0026] Rotating the rotating rod 22 in the forward direction causes it to descend along with the clamping block 23 and the rubber pad, making the rubber pad come into contact with the surface of the ball head 15. The friction between the rubber pad and the ball head 15 allows the ball head 15 to be positioned and prevented from moving.

[0027] like Figure 3 and Figure 5 As shown, the clamping plate 7 has a groove corresponding to the roller 8. The roller 8 is rotatably installed in the groove. The mounting plate 4 has symmetrically opened long slots on the side near the clamping plate 7. The grooves and long slots are equipped with heating plates 24. The heating plates 24 in the grooves are in contact with the roller 8. A copper sheet 25 is fixedly installed on the mounting plate 4. The copper sheet 25 closes the long slots and is in contact with the heating plates 24. The roller 8 is made of copper. The surface of the copper sheet 25 is flush with the side of the mounting plate 4 near the clamping plate 7.

[0028] If the ambient humidity is high, there will be tiny water droplets on the surface of the insulating sleeve on the outside of the copper sheet 25, which will affect the friction between the mounting plate 4 and the roller 8 and the insulating sleeve, causing slippage and affecting the fixing effect on the clamp 2, making the clamp 2 prone to slippage. Therefore, the heating plate 24 is activated in advance to generate heat, which is transferred to the roller 8 and the copper sheet 25, so that the roller 8 and the copper sheet 25 are preheated. When the roller 8 and the copper sheet 25 on the mounting plate 4 come into contact with the insulating sleeve, the water droplets on the surface of the insulating sleeve are heated and evaporated quickly, ensuring that the contact area between the insulating sleeve and the roller 8 and the copper sheet 25 is dry, thereby avoiding slippage and ensuring the fixing effect of the clamp 2. The final surface temperature of roller 8 and copper sheet 25 can reach 40 degrees Celsius.

[0029] like Figure 3 As shown, the first lead screw 5 has symmetrical threads in opposite directions, and the two second lead screws 9 have threads in opposite directions.

[0030] When the first lead screw 5 rotates in the forward direction, it can drive a pair of sliders 6 to move closer to each other. When the two second lead screws 9 rotate, they can drive a pair of mounting plates 4 to move closer to each other.

[0031] like Figure 1 As shown, the clamp 7 and the sensor 1 are arranged parallel to each other.

[0032] The clamping plate 7, in conjunction with the clamping of the copper busbar, allows the clamp 2 to be parallel to the copper busbar, thus enabling the copper busbar to be centered relative to the sensor 1.

[0033] When a pair of clamping plates 7 work with rollers 8 to clamp the copper busbar, the copper busbar is centered relative to the sensor 1.

[0034] Working principle: In use, the bolt 14 is separated from the sensor 1, thus disconnecting the clamp 2 from the sensor 1. The clamp 2 is held close to the copper busbar, which is then positioned inside the clamp 2. The rotating rod 11 is rotated clockwise, causing the connected sprocket 12 to rotate. This, in conjunction with the chain belt 13, causes another sprocket 12 and the second lead screw 9 to rotate. The second lead screw 9 moves the mounting plate 4 towards the copper busbar. The mounting plate 4, along with the slider 6, clamp 7, and roller 8, moves accordingly, positioning the clamp 7 on either side of the copper busbar. At this point, the mounting plate 4 is not in contact with the copper busbar. The movement of the mounting plate 4 is then stopped. The first lead screw 5 is rotated clockwise, causing the slider 6, clamp 7, and roller 8 to move, thus positioning the relative... The two clamping plates 7 approach each other, and finally the roller 8 comes into contact with the insulating sleeve on the surface of the copper busbar. Then, the mounting plate 4 continues to move. As the mounting plate 4 moves, the roller 8 rolls along the insulating sleeve on the surface of the copper busbar, eventually coming into contact with the insulating sleeve on the surface of the copper busbar. At this point, the friction between the roller 8 and the insulating sleeve on the surface of the copper busbar, as well as the friction between the mounting plate 4 and the insulating sleeve on the surface of the copper busbar, prevents the roller 8, clamping plates 7, and clamp 2 from moving vertically. The cooperation of the clamping plates 7 and the roller 8 prevents the clamp 2 from moving horizontally, thus fixing the clamp 2. The clamp 2 is then connected to the sensor 1 again using bolts 14. Once the clamp 2 is fixed, the sensor 1 and the clamp... After connection and fixation, rotate the base plate 20 to rotate the sleeve 18, rectangular post 17, and ball head sleeve 16, so that the base plate 20 can be adjusted to be parallel to the surface of the required installation area. Pull the base plate 20 to move the sleeve 18 away from the ball head sleeve 16, so that the position of the base plate 20 can be adjusted so that the base plate 20 can contact the required installation area. Then connect and fix the base plate 20 to the required installation area. The angle of the base plate 20 can be adjusted throughout the process to ensure that the base plate 20 can contact the required installation area. Then rotate the fastening rod 19 forward so that its end abuts against the rectangular post 17. Relying on the friction between the fastening rod 19 and the rectangular post 17, the rectangular post 17 can be fixed. The column 17 is fixed, thereby fixing the ball head sleeve 16. The rotating rod 22 is rotated in the forward direction, causing it to descend with the clamping block 23 and the rubber pad, so that the rubber pad comes into contact with the surface of the ball head rod 15. The friction between the rubber pad and the ball head rod 15 can position the ball head rod 15 so that it cannot move, thus fixing the sensor 1. Then, the first lead screw 5 is rotated in the reverse direction, which can make the pair of clamping plates 7 move away from each other. Then, the mounting plate 4 is driven to reset, so that the roller 8 leaves the copper busbar, avoiding the clamping plates 7 and roller 8 from affecting the heat dissipation of the copper busbar. At this time, the installation of the sensor 1 is completed. The copper busbar is now centered relative to the sensor 1, so that the sensor 1 can sense more accurately. If the ambient humidity is high, there will be tiny water droplets on the surface of the insulating sleeve on the outside of the copper sheet 25, which will affect the friction between the mounting plate 4 and the roller 8 and the insulating sleeve, causing slippage and affecting the fixing effect on the clamp 2, making the clamp 2 prone to slippage. Therefore, the heating plate 24 is activated in advance to generate heat, which is then transferred to the roller 8 and the copper sheet 25, allowing the roller 8 and the copper sheet 25 to be preheated. When the roller 8 and the copper sheet 25 on the mounting plate 4 come into contact with the insulating sleeve, the water droplets on the surface of the insulating sleeve are heated and evaporated quickly, ensuring that the contact area between the insulating sleeve and the roller 8 and the copper sheet 25 is dry, thereby avoiding slippage and ensuring the fixing effect of the clamp 2.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A synchronous current sensor for busbars, characterized in that, include: The sensor (1) is provided with a centering mounting component on its exterior, which allows the copper busbar to be centered relative to the sensor (1); The central mounting assembly includes: clamp (2), pad (3), mounting plate (4), first lead screw (5), slider (6), clamp (7), roller (8), bolt (14), drive assembly, and fixing assembly; The clamp (2) is set outside the sensor (1). The clamp (2) is fixedly connected to the sensor (1) by bolts (14). The pad (3) is symmetrically fixedly installed on the top of the clamp (2). The mounting plate (4) is slidably set on the pad (3). The driving assembly can drive the mounting plate (4) to move horizontally. The inner side of the mounting plate (4) is provided with a sliding groove. The first lead screw (5) is rotatably installed in the sliding groove. The slider (6) is symmetrically threaded outside the first lead screw (5). The clamp (7) is fixedly installed on one side of the slider (6). The roller (8) is equidistantly rotatably installed on the inner side of the clamp (7). The fixing assembly can connect the sensor (1) to the installation area.

2. The synchronous current sensor for busbars according to claim 1, characterized in that: The drive assembly includes: a second lead screw (9), a side plate (10), a rotating rod (11), a sprocket (12), and a chain belt (13). The top of the pad (3) is provided with a horizontal groove, the second lead screw (9) is rotatably installed in the horizontal groove, the mounting plate (4) is threaded on the outside of the second lead screw (9), one end of the second lead screw (9) extends to the outside of the horizontal groove, the side plate (10) is symmetrically fixedly installed on the top of the clamp (2), the rotating rod (11) is rotatably installed on the side plate (10), the sprocket (12) is fixedly installed on one end of the second lead screw (9) and both ends of the rotating rod (11), and adjacent sprockets (12) are connected by a chain belt (13).

3. The synchronous current sensor for busbars according to claim 2, characterized in that: The fixing components include: ball head rod (15), ball head sleeve (16), telescopic connection component, positioning component, and base plate (20). One end of the ball head rod (15) is fixedly connected to the sensor (1). The ball head rod (15) is rotatably installed inside the ball head sleeve (16). The ball head sleeve (16) is connected to the base plate (20) through a telescopic connection assembly. The positioning assembly is set on the ball head sleeve (16) for positioning the ball head rod (15).

4. The synchronous current sensor for busbars according to claim 3, characterized in that: The telescopic connection assembly includes: a rectangular column (17), a sleeve (18), and a fastening rod (19). The sleeve (18) is symmetrically fixedly installed on the base plate (20). The rectangular column (17) is slidably disposed inside the sleeve (18). One end of the rectangular column (17) is fixedly connected to the ball head sleeve (16). The fastening rod (19) is threadedly connected to the outside of the sleeve (18). One end of the fastening rod (19) extends into the sleeve (18).

5. The synchronous current sensor for busbars according to claim 4, characterized in that: The positioning assembly includes: a bracket (21), a rotating rod (22), a clamping block (23), and a rubber pad; The bracket (21) is fixedly installed on the top of the ball head sleeve (16). The top of the ball head sleeve (16) has an opening corresponding to the clamping block (23). The rotating rod (22) is threadedly connected to the bracket (21). The bottom of the rotating rod (22) extends to the bottom of the bracket (21) and is rotatably connected to the clamping block (23). The rubber pad is set at the bottom of the clamping block (23).

6. The synchronous current sensor for busbars according to claim 5, characterized in that: The clamping plate (7) has a groove corresponding to the roller (8), and the roller (8) is rotatably installed in the groove. The mounting plate (4) has a long groove symmetrically opened on the side near the clamping plate (7). The groove and the long groove are equipped with heating plates (24). The heating plates (24) located in the groove are in contact with the roller (8). A copper sheet (25) is fixedly installed on the mounting plate (4). The copper sheet (25) closes the long groove and is in contact with the heating plate (24). The roller (8) is made of copper. The surface of the copper sheet (25) is flush with the side of the mounting plate (4) near the clamping plate (7).

7. The synchronous current sensor for busbars according to claim 6, characterized in that: The first lead screw (5) is symmetrically provided with threads in opposite directions, and the two second lead screws (9) are provided with threads in opposite directions.

8. The synchronous current sensor for busbars according to claim 7, characterized in that: The clamp (7) and the sensor (1) are arranged parallel to each other.

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