A high-voltage side direct-extraction partial discharge high-frequency current sensor

Abstract

The utility model relates to a high -voltage side straightly gathers local discharge high frequency current sensor relates to the field of sensor, it includes sensor body, still includes setting up on the sensor body's hanging rope and the buckle assembly that will hanging rope divide into two parts, the buckle assembly includes fixed part, mounting and protection part, fixed part and mounting are connected with the both ends of hanging rope respectively, mounting inserts fixed part and rotates with fixed part to realize interlock, protection part slip connection is in mounting to cover fixed part and mounting, the utility model has the function that makes current sensor convenient to carry and can hang on the high -voltage wire and carry out the measurement local discharge.

Description

Technical Field

[0001] This utility model relates to the field of sensors, and more particularly to a high-voltage side direct sampling partial discharge high-frequency current sensor. Background Technology

[0002] A high-frequency current sensor is a detection device that safely and accurately converts the high-frequency pulse current of the partial discharge signal in a line into a small voltage signal. It has now become a key core component for partial discharge detection.

[0003] In related technologies, such as Chinese Patent No. CN222420350U, a high-voltage side direct sampling partial discharge high-frequency current sensor is disclosed, including a PCB board, a first shield, a first Rogowski coil and a second shield, an insulating substrate, a first conductive inner plate and a first conductive outer plate.

[0004] Regarding the aforementioned technologies, the inventors believe that in current high-voltage line partial discharge detection, high-frequency partial discharge signals are typically collected through the equipment's grounding wire. For equipment without a grounding wire, workers often need to carry high-frequency current sensors and move them along high overhead lines for measurement. However, existing sensors are generally handheld, forcing workers to hold the sensor body with their bare hands and making it impossible to hang it on high-voltage overhead lines to measure partial discharge. Utility Model Content

[0005] In order to more effectively detect partial discharge in high-voltage equipment without grounding wire, this utility model provides a high-frequency current sensor for direct sampling of partial discharge on the high-voltage side.

[0006] This utility model provides a high-voltage side direct sampling partial discharge high-frequency current sensor, which adopts the following technical solution: A high-voltage side direct sampling partial discharge high-frequency current sensor includes a sensor body, a suspension rope disposed on the sensor body, and a buckle assembly that divides the suspension rope into two parts. The buckle assembly includes a fixing component, a mounting component, and a protective component. The fixing component and the mounting component are respectively connected to both ends of the suspension rope. The mounting component is inserted into the fixing component and rotates relative to the fixing component to achieve mutual locking. The protective component is slidably connected to the mounting component to cover the fixing component and the mounting component.

[0007] By adopting the above technical solution, the buckle assembly is connected to the suspension rope, so that when carrying or using the current sensor, the staff can fasten the current sensor to their belt or other personal items through the buckle assembly and the suspension rope, and the sensor can be suspended on the high-voltage line to measure partial discharge.

[0008] Optionally, the fastener includes a connecting portion for connecting one end of the suspension rope and a locking portion for locking the mounting component; The mounting component has a locking groove for the locking part to be inserted and rotated and slid. When the locking part slides into the locking groove, the fixing component and the mounting component lock each other.

[0009] By adopting the above technical solution, the locking part is embedded into the locking groove and the fixing part is rotated, so that the locking part slides in the locking groove, thereby locking the fixing part and the mounting part together.

[0010] Optionally, a first fixing magnet is embedded in the locking part, and a second fixing magnet that attracts the first fixing magnet is embedded in the inner wall of the locking groove; The first fixing magnet is embedded in the locking part and the end face of the first fixing magnet is flush with the side wall of the locking part. The second fixing magnet is embedded in the inner side wall of the locking groove and the end face of the second fixing magnet is flush with the end face of the inner side wall of the locking groove.

[0011] By adopting the above technical solution, the mutual attraction between the first fixed magnet and the second fixed magnet is used to drive the locking part to slide towards the mounting part after the locking part slides into the locking groove, thereby enhancing the stability of the fixing part and the mounting part after locking and preventing the locking between the fixing part and the mounting part from loosening.

[0012] Optionally, a first phase magnet is embedded in the locking part, and a second phase magnet that attracts the first phase magnet is embedded in the inner wall of the locking groove; The first attracting magnet is embedded in the locking part and the end face of the first attracting magnet is flush with the side wall of the locking part. The second attracting magnet is embedded in the inner side wall of the locking groove and the end face of the second attracting magnet is flush with the end face of the inner side wall of the locking groove.

[0013] By adopting the above technical solution and setting an attractive magnet group, the locking part can be driven to slide into the locking groove, thereby further improving the stability of the fastener and the mounting part after locking and preventing the locking between the fastener and the mounting part from loosening.

[0014] Optionally, a first repulsive magnet is also embedded in the locking part, and a second repulsive magnet that repulses the first repulsive magnet is embedded in the inner wall of the locking groove; The first repulsive magnet is embedded in the locking part and the end face of the first repulsive magnet is flush with the side wall of the locking part. The second repulsive magnet is embedded in the inner side wall of the locking groove and the end face of the second repulsive magnet is flush with the end face of the inner side wall of the locking groove.

[0015] By adopting the above technical solution, the repulsive force generated by the two repulsive magnets drives the locking part to slide into the locking groove, thereby further improving the stability of the fastener and the mounting part after locking and preventing the locking between the fastener and the mounting part from loosening.

[0016] Optionally, the protective component includes a support sleeve fitted and slidably connected to the mounting component, a support ring fixedly connected to the support sleeve, a protective sleeve fixedly connected to the support ring for covering the mounting component and the fixing component, a tension spring, and a mounting ring for mounting the tension spring. One end of the tension spring is fixedly connected to the support ring, and the other end of the tension spring is fixedly connected to the mounting ring. The tension spring drives the protective sleeve to slide towards the fixing component to cover the mounting component and the fixing component.

[0017] By adopting the above technical solution, the protective sleeve can automatically cover the locked fasteners and mounting parts under the action of the tension spring, avoiding collisions between the fasteners and mounting parts and external objects after they are locked, thus improving the stability of the fasteners and mounting parts after they are locked.

[0018] Optionally, the sensor body is also provided with a storage box, the storage box has a clearance hole for the suspension rope to pass through, and a winding assembly is provided inside the storage box; The winding assembly includes a rotating rod rotatably connected to the inner wall of the storage box, a winding drum fixedly connected to the rotating rod for winding the suspension rope, and a coil spring fixedly connected to the rotating rod. When the suspension rope drives the rotating rod to rotate, the coil spring drives the rotating rod to rotate back.

[0019] By adopting the above technical solution, when it is necessary to adjust the length of the suspension rope or when the suspension rope is not needed, the winding assembly can automatically wind up the excess suspension rope under the restoring force of the coil spring, so that the suspension rope is stored on the winding drum, making the use of the suspension rope more convenient.

[0020] Optionally, the winding assembly further includes a rotating sleeve, which is fixedly connected to the storage box, and the rotating rod passes through and is rotatably connected inside the rotating sleeve.

[0021] By adopting the above technical solution, the rotating sleeve provides a stable rotation support structure for the rotating rod, reducing friction and shaking when the rotating rod rotates, making the winding process smoother and extending the service life of the winding assembly.

[0022] Optionally, the storage box includes a storage lid and a storage compartment. The storage lid is provided with a snap-fit ​​component that snaps into the storage compartment, and the storage compartment is provided with a snap-fit ​​groove for the snap-fit ​​component to be inserted.

[0023] By adopting the above technical solution, the storage box adopts a split design, which facilitates the assembly and maintenance of the internal winding components. The cooperation between the snap-fit ​​parts and the snap-fit ​​slots enables the quick assembly and disassembly of the storage cover and storage compartment. The structure is simple and the operation is convenient.

[0024] Optionally, a rubber sleeve is provided on the sensor body, and a locking sleeve is provided on the rubber sleeve for the storage box to be inserted and locked.

[0025] By adopting the above technical solution, the rubber sleeve can protect the sensor body from bumps and knocks, and the locking sleeve on the rubber sleeve can securely install the storage box on the sensor body. The disassembly of the storage box is also very convenient, making the disassembly and assembly of the overall structure more efficient.

[0026] In summary, this utility model has at least one of the following beneficial technical effects: The product in this application can be directly suspended on a high-voltage conductor to detect partial discharge signals, without requiring the operator to hold it continuously. The combination of the buckle assembly and the suspension rope allows staff to fix the current sensor to their belts, tool bags, and other personal items, improving the convenience of carrying and retrieving the equipment. The buckle assembly uses a locking method that involves insertion and rotation, combined with magnets for additional reinforcement. It is easy to operate and uses magnetic force to further enhance the connection stability after locking. The storage box with an automatic rewind function can automatically rewind the hanging rope, making it more convenient to use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a high-voltage side direct sampling partial discharge high-frequency current sensor in an embodiment of this application; Figure 2 This is an exploded view of the snap-fit ​​assembly in the embodiments of this application; Figure 3 This is an exploded view of the fastener and connector in the embodiments of this application. Figure 4 This is an exploded view of the protective component and mounting component in the embodiments of this application. Figure 5 This is a partial cross-sectional view of the support ring and support sleeve in an embodiment of this application; Figure 6 This is an exploded diagram of the storage box.

[0028] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Sensor body; 2. Rubber sleeve; 3. Locking sleeve; 4. Storage box; 41. Storage cover; 411. Snap-fit ​​component; 42. Storage compartment; 421. Snap-fit ​​groove; 5. Winding assembly; 51. Rotating sleeve; 52. Rotating rod; 53. Winding drum; 54. Coil spring; 6. Suspension rope; 7. Buckle assembly; 71. Fixing component; 711. Connecting part; 712. Locking part 713, First fixed magnet; 714, First attracting magnet; 715, First repulsive magnet; 72, Mounting component; 721, Locking groove; 722, Second fixed magnet; 723, Second attracting magnet; 724, Second repulsive magnet; 73, Protective component; 731, Support sleeve; 732, Support ring; 7321, Embedded block; 7322, Fastening ring; 733, Protective sleeve; 734, Tension spring; 735, Mounting ring. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0030] This utility model discloses a high-voltage side direct sampling partial discharge high-frequency current sensor.

[0031] Reference Figure 1 A high-voltage side direct sampling partial discharge high-frequency current sensor includes a sensor body 1, a rubber sleeve 2, a storage box 4, a suspension rope 6, and a buckle assembly 7. The rubber sleeve 2 is fitted onto the sensor body 1 and is driven outward by the sensor body 1. A locking sleeve 3 is integrally provided on the rubber sleeve 2. The storage box 4 is embedded in the locking sleeve 3 and is driven to open outward. The storage box 4 has a clearance hole for the suspension rope 6 to pass through. One end of the suspension rope 6 is fixedly connected to the storage box 4, and the other end of the suspension rope 6 is fixedly connected to the buckle assembly 7 and is divided into two parts by the buckle assembly 7.

[0032] Reference Figure 2 and Figure 3 The buckle assembly 7 includes a fixing member 71, a mounting member 72, and a protective member 73. The fixing member 71 is adhesively connected to a portion of the suspension rope 6, and the mounting member 72 is adhesively connected to another portion of the suspension rope 6. The fixing member 71 includes a connecting portion 711 for bonding the suspension rope 6 and a locking portion 712 for locking. The mounting member 72 has a locking groove 721 for the locking portion 712 to be inserted and slid within the locking groove 721. When the locking portion 712 is inserted into the locking groove 721, rotating the fixing member 71 causes the locking portion 712 to rotate and slide within the locking groove 721, thereby achieving mutual locking between the fixing member 71 and the mounting member 72.

[0033] Reference Figure 3To prevent the locking part 712 from easily falling out after being inserted into the locking groove 721, a first fixing magnet 713 is embedded inside the locking part 712, and a second fixing magnet 722, which attracts the first fixing magnet 713, is embedded on the inner sidewall of the end of the locking groove 721. The end faces of the first fixing magnet 713 and the second fixing magnet 722 are flush with the end faces of the sidewall of the locking part 712 and the inner sidewall of the locking groove 721, respectively, to ensure that the sliding of the locking part 712 within the locking groove 721 is not hindered.

[0034] Reference Figure 3 To prevent the locking part 712 from easily rotating out of the locking groove 721 after it has rotated and slid into the locking groove 721, a first phase magnet 714 is embedded in the side wall of the locking part 712, and a second phase magnet 723, which attracts the first phase magnet 714, is embedded in the inner side wall of the locking groove 721. When the locking part 712 has fully rotated and slid into the locking groove 721, the first phase magnet 714 and the second phase magnet 723 come into contact with each other and attract each other, preventing the locking part 712 from rotating in the locking groove 721, thereby improving the stability of the overall structure.

[0035] Reference Figure 3 To prevent the locking part 712 from easily rotating out after it has slid into the locking groove 721, a first repulsive magnet 715 is embedded in the side wall of the locking part 712 away from the first attracting magnet 714. A second repulsive magnet 724, which repels the first repulsive magnet 715, is embedded in the inner side wall of the locking groove 721 away from the second attracting magnet 723. The repulsive force of the second repulsive magnet 724 on the first repulsive magnet 715 drives the locking part 712 to slide in the locking groove 721, thereby locking the fixing member 71 and the mounting member 72 together.

[0036] Reference Figure 2 , Figure 4 and Figure 5The protective component 73 includes a support sleeve 731, a support ring 732, a protective sleeve 733, a tension spring 734, and a mounting ring 735. The support sleeve 731 is fitted onto the mounting component 72 and can slide along the axial direction of the mounting component 72. An annular insert block 7321 is integrally formed on the inner wall of the support ring 732, and the insert block 7321 is snapped into a groove on the inner wall of the protective sleeve 733 at the end away from the fixing component 71. The mounting ring 735 is integrally provided on the outer wall of the mounting component 72. Both the support ring 732 and the mounting ring 735 are integrally provided with a fastening ring 7322 through which the tension spring 734 passes and is bonded. One end of the tension spring 734 passes through and is bonded in the fastening ring 7322 of the support ring 732, and the other end of the tension spring 734 passes through and is bonded in the fastening ring 7322 of the mounting ring 735, so as to drive the protective sleeve 733 to slide towards the fixing component 71. When the fastener 71 and the mounting part 72 are locked together, the protective sleeve 733, under the action of the tension spring 734, conceals the fastener 71 and the mounting part 72, preventing them from easily colliding with external objects and becoming loose. When the fastener 71 and the mounting part 72 are not needed for locking, the protective sleeve 733 can be moved to drive the tension spring 734, causing the protective sleeve 733 to slide and fully expose the fastener 71 to the outside, allowing the fastener 71 to be rotated to release the lock between the fastener 71 and the mounting part 72.

[0037] Reference Figure 6 The storage box 4 includes a storage lid 41 and a storage compartment 42. The storage lid 41 is embedded into the snap-fit ​​groove 421 of the storage compartment 42 via an integrally formed snap-fit ​​piece 411. A winding assembly 5 is installed in the storage compartment 42. The winding assembly 5 includes a rotating sleeve 51, a rotating rod 52, a winding drum 53, and a coil spring 54. The rotating sleeve 51 is threaded onto the side wall of the storage compartment 42, and the rotating rod 52 passes through and is rotatably connected to the rotating sleeve 51. The winding drum 53 is integrally formed on the rotating rod 52, and a suspension rope 6 is wound around the winding drum 53, with one end of the suspension rope 6 bonded to the side wall of the winding drum 53. The coil spring 54 is fitted onto the rotating rod 52, and one end of the coil spring 54 is bonded to the side wall of the rotating rod 52 and the other end of the coil spring 54 is bonded to the side wall of the storage compartment 42 using Xinyou SE8245 structural adhesive. When the worker pulls the suspension rope 6 outward, the suspension rope 6 will drive the winding drum 53 and the rotating rod 52 to rotate, causing the coil spring 54 to be twisted and store energy. When the suspension rope 6 is released or the rope length needs to be shortened, the coil spring 54 will release its elastic potential energy, driving the rotating rod 52 and the winding drum 53 to rotate in the opposite direction, automatically winding the excess suspension rope 6 onto the winding drum 53, preventing the suspension rope 6 from getting tangled and knotted, and keeping the overall structure neat.

[0038] The implementation principle of a high-voltage side direct sampling partial discharge high-frequency current sensor according to this utility model embodiment is as follows: When the staff needs to carry the current sensor, first pull the suspension rope 6 outward to allow the coil spring 54 of the winding assembly 5 to store energy. The suspension rope 6 is released from the storage box 4 to a suitable length. The suspension rope 6 is then wrapped around a belt, tool bag hanging ring, or other personal items. Then, the locking part 712 of the fixing part 71 is inserted into the locking groove 721 of the mounting part 72. The fixing part 71 is rotated to allow the locking part 712 to slide to the locking position to achieve locking. When the current sensor is not needed, the fixing part 71 is rotated in the opposite direction to unlock the fixing part 71 from the mounting part 72. Under the action of the winding device, the suspension rope 6 can be automatically retracted into the storage box 4.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A high-voltage side direct sampling partial discharge high-frequency current sensor, comprising a sensor body (1), characterized in that: It also includes a suspension rope (6) set on the sensor body (1) and a buckle assembly (7) that divides the suspension rope (6) into two parts. The buckle assembly (7) includes a fixing member (71), a mounting member (72), and a protective member (73). The fixing member (71) and the mounting member (72) are respectively connected to the two ends of the suspension rope (6). The mounting member (72) is inserted into the fixing member (71) and rotates relative to the fixing member (71) to achieve mutual locking. The protective member (73) is slidably connected to the mounting member (72) to cover the fixing member (71) and the mounting member (72).

2. The high-voltage side direct sampling partial discharge high-frequency current sensor according to claim 1, characterized in that: The fastener (71) includes a connecting part (711) for connecting one end of the suspension rope (6) and a locking part (712) for locking the mounting part (72). The mounting component (72) has a locking groove (721) for the locking part (712) to be inserted into and rotated and slid. When the locking part (712) slides into the locking groove (721), the fixing component (71) and the mounting component (72) lock each other.

3. A high-voltage side direct sampling partial discharge high-frequency current sensor according to claim 2, characterized in that: The locking part (712) is provided with a first fixed magnet (713), and the inner sidewall of the locking groove (721) is provided with a second fixed magnet (722) that attracts the first fixed magnet (713). The first fixed magnet (713) is embedded in the locking part (712) and the end face of the first fixed magnet (713) is flush with the outer surface of the locking part (712). The second fixed magnet (722) is embedded in the inner wall of the locking groove (721) and the end face of the second fixed magnet (722) is flush with the end face of the inner wall of the locking groove (721).

4. A high-voltage side direct sampling partial discharge high-frequency current sensor according to claim 2, characterized in that: The locking part (712) is provided with a first phase magnet (714), and the inner wall of the locking groove (721) is provided with a second phase magnet (723) that attracts the first phase magnet (714). The first attracting magnet (714) is embedded in the locking part (712) and the end face of the first attracting magnet (714) is flush with the outer surface of the locking part (712). The second attracting magnet (723) is embedded in the inner wall of the locking groove (721) and the end face of the second attracting magnet (723) is flush with the end face of the inner wall of the locking groove (721).

5. A high-voltage side direct sampling partial discharge high-frequency current sensor according to claim 2, characterized in that: The locking part (712) is also provided with a first repulsive magnet (715), and the inner wall of the locking groove (721) is provided with a second repulsive magnet (724) that repulses the first repulsive magnet (715). The first repulsive magnet (715) is embedded in the locking part (712) and the end face of the first repulsive magnet (715) is flush with the outer surface of the locking part (712). The second repulsive magnet (724) is embedded in the inner wall of the locking groove (721) and the end face of the second repulsive magnet (724) is flush with the end face of the inner wall of the locking groove (721).

6. A high-voltage side direct sampling partial discharge high-frequency current sensor according to claim 1, characterized in that: The protective element (73) includes a support sleeve (731) sleeved and slidably connected to the mounting element (72), a support ring (732) fixedly connected to the support sleeve (731), a protective sleeve (733) snapped into the support ring (732) to cover the mounting element (72) and the fixing element (71), a tension spring (734), and a mounting ring (735) for mounting the tension spring (734). One end of the tension spring (734) is fixedly connected to the support ring (732), and the other end of the tension spring (734) is fixedly connected to the mounting ring (735). The tension spring (734) drives the protective sleeve (733) to slide towards the fixing member (71) to cover the mounting member (72) and the fixing member (71).

7. A high-voltage side direct sampling partial discharge high-frequency current sensor according to claim 6, characterized in that: The sensor body (1) is also provided with a storage box (4), the storage box (4) is provided with a clearance hole for the suspension rope (6) to pass through, and the storage box (4) is provided with a winding assembly (5). The winding assembly (5) includes a rotating rod (52) rotatably connected to the inner wall of the storage box (4), a winding drum (53) fixedly connected to the rotating rod (52) and used for winding the suspension rope (6), and a coil spring (54) fixedly connected to the rotating rod (52). When the suspension rope (6) drives the rotating rod (52) to rotate, the coil spring (54) drives the rotating rod (52) to rotate back.

8. A high-voltage side direct sampling partial discharge high-frequency current sensor according to claim 7, characterized in that: The winding assembly (5) also includes a rotating sleeve (51), which is fixedly connected to the storage box (4), and the rotating rod (52) passes through and is rotatably connected inside the rotating sleeve (51).

9. A high-voltage side direct sampling partial discharge high-frequency current sensor according to claim 7, characterized in that: The storage box (4) includes a storage cover (41) and a storage compartment (42). The storage cover (41) is provided with a snap-fit ​​component (411) that snaps into the storage compartment (42). The storage compartment (42) is provided with a snap-fit ​​groove (421) for the snap-fit ​​component to be inserted.

10. A high-voltage side direct sampling partial discharge high-frequency current sensor according to claim 1, characterized in that: The sensor body (1) is fitted with a rubber sleeve (2), and the rubber sleeve (2) is provided with a locking sleeve (3) for the storage box (4) to be inserted and locked.

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