Insulator zero value detection tool

Abstract

This utility model belongs to the field of maintenance tools for high-voltage transmission lines in smart grids, specifically relating to a zero-value insulator detection tool. This insulator zero-value detection tool includes a rolling part, which comprises several rolling strips arranged in a circumferential array around a reference cylinder, with at least a portion of each rolling strip parallel to the central axis of the reference cylinder. It also includes a discharge detection part, comprising two discharge terminals connected to the rolling part, with the tips of the two discharge terminals facing each other. Adjacent rolling strips are respectively connected to two different discharge terminals. This insulator zero-value detection tool can quickly complete the inspection of each insulator, improving inspection efficiency and reducing operation time. Simultaneously, it ensures accurate inspection results, reduces the false judgment rate, and is suitable for various on-site inspection environments.

Description

Technical Field

[0001] This utility model belongs to the field of maintenance tools for high-voltage transmission lines in smart grids, and specifically relates to an insulation zero-value detection tool. Background Technology

[0002] Currently, the spark gap method is commonly used for insulator testing in China. This method is based on the voltage difference across the insulator. Spark gaps are generally fixed. Electro-optical spark gap measuring instruments, however, are adjustable based on potential levels, with a measuring head mounted on the top of the operating rod. During testing, one side of the fork contacts the insulator's steel cap, while the other side crosses the insulator being tested and contacts the adjacent insulator's steel cap or metal. The gap setting voltage discharges, generating a spark discharge, producing a discharge sound and light. If the insulator is faulty (low or zero value), the potential difference distributed across it is very small or equal to zero, preventing spark discharge. No discharge sound is heard, and the light does not illuminate. Such insulators have a zero value and should be replaced immediately.

[0003] Currently, using the spark fork at the front end of the insulating operating rod to inspect each insulator piece is not only inefficient, but also has defects such as easy to miss detections, uneven overlap of the spark fork, and easy loosening of the fork head due to uneven stress. Utility Model Content

[0004] Technical problem: The technical problem to be solved by this application is to provide a testing tool that can efficiently and stably detect the zero-value characteristics of insulators.

[0005] An insulator zero-value detection tool, comprising:

[0006] The rolling part includes a plurality of rolling bars arranged in a circumferential array of a reference cylinder, at least a portion of which is parallel to the central axis of the reference cylinder.

[0007] The discharge detection unit includes two discharge terminals connected to the rolling section, with the tips of the two discharge terminals facing each other. Two adjacent rolling bars are connected to two different discharge terminals. The rolling bars are arranged in a circumferential array around the rolling section, forming a cage-like cylindrical rolling body. During use, they roll along the insulator's axial direction to quickly complete the detection. The continuous rolling of the rolling section along the insulator ensures a more even overlap, preventing loosening due to uneven force. The ends of the discharge tips are connected to adjacent rolling bars, with gaps at their front ends forming a detection circuit.

[0008] Furthermore, the rolling part includes a star-shaped connector arranged opposite to each other. A plurality of connecting contacts are arranged in a row around the circumference of the star-shaped connector, and each connecting contact is equipped with a retaining element for connecting the rolling strip. By connecting the rolling elements one by one through the connecting contacts distributed on the star-shaped connector, a certain distance is maintained between the rolling elements, preventing direct connection of the rolling strips and the formation of an equipotential body that could affect the detection results. Furthermore, the detachable retaining elements facilitate future replacement and maintenance.

[0009] Furthermore, the clamping component includes a fixed plate and a clamping sleeve that are connected to each other. The fixed plate is fixedly connected to the connecting contact head, and the clamping sleeve is provided with a clamping bolt. By adjusting the depth of the rolling bar embedded in the clamping sleeve, the radius of the rotating part is changed, thereby changing the straight-line distance between two adjacent rolling bars to accommodate insulators of different specifications.

[0010] Furthermore, the scroll bar is U-shaped, with two opposing retaining sleeves embedded at each end. This clamping and securing of the scroll bar on both sides enhances its stability.

[0011] Furthermore, the discharge detection unit also includes a detection connector, which includes a connector base connected to the end of the discharge terminal. The connector base is provided with a number of connecting rods, the number of which is 1 / 2 of the number of connecting contacts. There are two detection connectors, which are respectively connected to the inner side of two star-shaped connectors. The connecting rods on the left and right sides are respectively connected to two adjacent rolling bars.

[0012] Furthermore, the connecting rod is directly connected to the retaining member by bolts or wires, thereby connecting to the rolling bar, or directly connected to the rolling bar.

[0013] Furthermore, the star-shaped connector is made of insulating material or has an insulating layer coated on its surface to prevent two adjacent rolling bars from forming an equipotential body.

[0014] Furthermore, it also includes a wheel frame, which is connected to both sides of the rotating shaft of the rolling part for connecting the drive unit. The wheel frame is a U-shaped wheel frame.

[0015] Furthermore, a connecting shaft is provided in the middle of the star-shaped connector for connecting the wheel frame. The support rods on both sides of the wheel frame can connect the rolling part and then connect other force-applying or driving parts. On the other hand, after the star-shaped connector is fixedly connected to the support rods on both sides, the spacing of the star-shaped connector is limited, which greatly reduces the occurrence of torsional deformation of the rolling part.

[0016] Furthermore, the wheel frame is equipped with an insulating rod connector for connecting the insulating push rod. The insulating rod connector has a U-shaped snap-fit ​​groove and anti-slip protrusions on its end face. The corresponding connecting end face of the insulating rod also has anti-slip textures, and a connecting hole is opened on its connecting end face. The connecting hole and the snap-fit ​​groove are fixed by a wing bolt.

[0017] The beneficial effects of this application are as follows:

[0018] 1. The insulator zero-value testing tool of this application adopts a rolling part design. By rolling the rolling bar along the axial direction of the insulator, the testing of each piece can be completed quickly. Compared with the traditional spark fork method of overlapping pieces one by one, the testing efficiency is significantly improved and the operation time is reduced.

[0019] 2. The rolling section uses rolling bars arranged in a circumferential array to form a cage-like cylindrical rolling body. During rolling, the overlap is even, avoiding the problem of missed detection caused by uneven overlap in traditional spark forks. At the same time, the rolling bars are fixed by star-shaped connectors and retainers, ensuring uniform force distribution and effectively preventing loosening or deformation caused by uneven force distribution.

[0020] 3. By adjusting the depth of the rolling bar embedded in the retaining sleeve, the radius of the rolling part can be changed, thereby adjusting the distance between adjacent rolling bars, adapting to insulators of different specifications, and enhancing the versatility and applicability of the tool.

[0021] 4. The scroll bar is detachably connected to the star-shaped connector via a retaining element, which facilitates later replacement and maintenance, reduces maintenance costs, and extends the tool's service life.

[0022] 5. The discharge detection unit forms a detection circuit by setting the tips of two discharge terminals opposite each other. Combined with the insulation design of the star connector, it avoids the formation of equipotential bodies between adjacent rolling bars, ensuring accurate detection results and reducing the false judgment rate.

[0023] 6. The U-shaped rolling bar has retaining sleeves embedded at both ends. Combined with the star-shaped connector and the wheel frame fixing design, it enhances the structural stability of the rolling part and reduces detection failure caused by torsion deformation during rolling.

[0024] 7. The wheel frame and insulating rod connector are fixed by U-shaped snap-fit ​​grooves and wing bolts, which makes the connection stable and easy to disassemble and assemble. The anti-slip protrusion design further improves the safety and convenience of operation, and is suitable for a variety of on-site testing environments. Attached Figure Description

[0025] Figure 1 This is a partial perspective view of an embodiment of this application;

[0026] Figure 2 This is a partial front view schematic diagram of an embodiment of this application;

[0027] Figure 3 This is a partial rear view diagram of an embodiment of this application;

[0028] Figure 4 This is a three-dimensional schematic diagram of an embodiment of this application;

[0029] Figure 5This is a schematic diagram of a star-shaped connector according to an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the card holder according to an embodiment of this application;

[0031] Figure 7 This is a schematic diagram of the detection connector according to an embodiment of this application;

[0032] 1. Roller bar; 2. Clamping sleeve; 3. Star-shaped connector; 4. Connecting contact head; 5. Fixing plate; 6. Clamping bolt; 7. Discharge terminal; 8. Detection connector; 9. Connecting seat; 10. Connecting rod; 11. Wheel frame; 12. Connecting shaft; 13. Support rod; 14. Insulating rod connector; 15. Insulating push rod; 16. U-shaped clamping groove; 17. Wing bolt. Detailed Implementation

[0033] The following describes in detail the specific implementation of an insulator zero-value detection tool according to the present invention, with reference to the accompanying drawings.

[0034] As shown in the figure, this utility model provides an insulator zero-value detection tool, including a rolling part and a discharge detection part. The rolling part includes several rolling strips 1 arranged in a circumferential array of a reference cylinder. The rolling strips 1 are U-shaped, with the middle part parallel to the central axis of the reference cylinder, and both ends are embedded in retaining sleeves 2 to improve structural stability. The rolling part is connected by two oppositely arranged star-shaped connectors 3, which are made of insulating material to prevent adjacent rolling strips 1 from forming an equipotential body. Six connecting contacts 4 are arranged in a circumferential array around the star-shaped connectors 3. The connecting contacts 4 are provided with retaining elements, including a fixing plate 5 and a retaining sleeve 2. The fixing plate 5 is fixedly connected to the connecting contacts 4 by bolts. The retaining sleeve 2 is provided with clamping bolts 6. By adjusting the depth of the rolling strip 1 embedded in the retaining sleeve 2, the radius of the rolling part can be changed, thereby changing the span between two adjacent rolling strips to adapt to insulators of different specifications. The length of the vertical part of the rolling strip 1 can be cut at the required embedding depth.

[0035] The discharge detection unit includes two discharge terminals 7, with their tips facing each other and connected to the rolling part. Two adjacent rolling bars 1 are respectively connected to two different discharge terminals 7, forming a detection circuit. The discharge detection unit also includes a detection connector 8, which includes a connecting seat 9 connected to the end of the discharge terminal 7, and three connecting rods 10 are provided on the connecting seat 9. There are two detection connectors 8, respectively connected to the inner sides of two star-shaped connectors 3. The connecting rods 10 on the left and right sides are respectively connected to two adjacent rolling bars 1. That is, if the rolling bars are numbered clockwise as g1-g6, the three connecting rods of the left detection connector 3 are connected to g1 / g3 / g5 respectively, and the three connecting rods of the right detection connector are connected to g2 / g4 / g6 respectively. The connecting rods 10 are directly connected to the fixing plate of the clamping part by bolts.

[0036] This embodiment also includes a wheel frame 11, which has a U-shaped structure and is connected to both sides of the rolling part's rotating shaft for connecting external force-applying components. A connecting shaft 12 is provided in the middle of the star-shaped connector 3, which connects the wheel frame 11. Support rods 13 on both sides of the wheel frame 11 are fixedly connected to the star-shaped connector 3 to limit the spacing of the star-shaped connector 3 and reduce the occurrence of torsional deformation of the rolling part. An insulating rod connector 14 is provided on the wheel frame 11, which connects to an insulating push rod 15. The insulating rod connector 14 has a U-shaped locking groove 16, with anti-slip protrusions on its end face. The connecting end face of the insulating push rod 15 has anti-slip textures and a connecting hole, which is fixed to the U-shaped locking groove 16 by a wing bolt 17.

[0037] In use, the insulating push rod 15 is connected to the insulating rod connector 14. The operator pushes the wheel frame 11 through the insulating push rod 15, causing the rolling part to roll along the insulator axis. The rolling bar 1 contacts the insulator steel cap, and the tips of the two discharge terminals 7 form a gap. When the insulator is at zero potential, the potential difference is insufficient to break down the gap, and there is no discharge sound or light. If the insulator is normal, the gap discharge produces sparks, sound, and light, and the test results are intuitive and reliable. The adjustment function of the retaining sleeve 2 and the clamping bolt 6 ensures that the rolling part can adapt to different insulator specifications, and the cooperation between the star connector 3 and the wheel frame 11 enhances the overall stability.

[0038] This embodiment achieves efficient and balanced detection through the design of the rolling part, solving the problems of low detection efficiency, easy omissions, and uneven force distribution of traditional spark forks. It has the advantages of convenient operation, stable structure, and easy maintenance.

Claims

1. A null detection tool for insulators, characterized in that, include: The rolling part includes a plurality of rolling bars (1) arranged in a circumferential array of a reference cylinder, at least a portion of which is parallel to the central axis of the reference cylinder; The discharge detection unit includes two discharge terminals (7) connected to the rolling part, with the tips of the two discharge terminals (7) arranged opposite each other; two adjacent rolling bars (1) are respectively connected to two different discharge terminals (7).

2. A zero value detection tool for insulators as claimed in claim 1, wherein, The rolling part includes a star-shaped connector (3) arranged opposite to each other. A plurality of connecting heads (4) are arranged around the circumference of the star-shaped connector (3). A retaining member is provided on the connecting head (4). The retaining member is used to connect the rolling bar (1).

3. A zero value detection tool for insulators as defined in claim 2, wherein, The clamping component includes a fixed plate (5) and a clamping sleeve (2) that are connected to each other. The fixed plate (5) is fixedly connected to the connecting contact head (4), and the clamping sleeve (2) is provided with a clamping bolt (6).

4. A zero value detection tool for insulators as claimed in claim 3, wherein, The scroll bar (1) is U-shaped, and two opposing retaining sleeves (2) are embedded at both ends of the scroll bar (1).

5. A zero value detection tool for insulators as claimed in any one of claims 2 to 4, wherein, The discharge detection unit further includes a detection connector (8), which includes a connector (9) connected to the discharge terminal (7). The connector (9) is provided with a plurality of connecting rods (10), and the number of connecting rods (10) is 1 / 2 of the number of connecting contacts (4). Two detection connectors (8) are provided, which are respectively connected to the inner side of two star connectors (3).

6. A zero value detection tool for insulators as claimed in claim 5, wherein, The connecting rod (10) is directly connected to the clamping member by bolts or wires.

7. A zero value detection tool for insulators as defined in claim 6, wherein The star-shaped connector (3) is made of insulating material or has an insulating layer coated on its surface.

8. A zero value detection tool for insulators as claimed in claim 6 or 7, characterised in that, It also includes a wheel frame (11), which is connected to both sides of the rolling part shaft for connecting the drive part.

9. The insulator zero-value detection tool as described in claim 8, characterized in that, The star-shaped connector (3) has a connecting shaft (12) in the middle for connecting the wheel frame (11).

10. A zero value detection tool for insulators as claimed in claim 9, wherein, An insulating rod connector (14) is provided on the wheel frame (11), and the insulating rod connector (14) is used to connect the insulating push rod (15).

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