Openable Rogowski coil for measuring lightning current of power transmission line

Abstract

The utility model discloses an openable Rogowski coil for measuring lightning current of a power transmission line, and relates to the technical field of Rogowski coils, the openable Rogowski coil comprises a support main body and a placing part, the left end of the support main body is fixedly provided with a movable shaft, the inner side of the upper end of the movable shaft is fixedly provided with an overturning seat, and the upper end of the support main body is fixedly provided with the placing part. The placing part comprises a placing seat fixedly arranged at the upper end of the inner side of the support body, a lower coil framework is fixedly arranged on the inner side of the placing seat, and a connecting structure of a lower current transformer spring buckle is fixedly arranged at the upper end of the inner side of the lower coil framework and matched with mutual clamping between multiple sets of positioning columns and limiting grooves, so that connection is more stable. Meanwhile, installation can be achieved without interrupting a circuit, rapid fixation can be achieved, the construction cost and time can be remarkably reduced, and it can be ensured that the coil is kept stable in a vibration or high-frequency current environment.

Description

Technical Field

[0001] This utility model relates to the field of Rogowski coil technology, specifically to an openable Rogowski coil for measuring lightning current in transmission lines. Background Technology

[0002] Lightning strikes are one of the most frequent types of power transmission line tripping accidents. Accurate lightning parameters are not only the foundation of power grid lightning protection design, but also, due to the advantages of Rogowski coils such as wide measurement bandwidth, good linearity, simple structure, and strong anti-interference ability, they are often used to measure lightning current parameters of power transmission line lightning strikes.

[0003] According to the announcement number CN211670060U, an open-type Rogowski coil is disclosed, which relates to the field of Rogowski coil component technology. It includes an upper housing and a lower housing, with the other side of the upper housing and the lower housing connected by a snap-fit ​​connection. An upper coil assembly is installed in the inner cavity of the upper housing.

[0004] Regarding the aforementioned solutions, the above-mentioned fixation is achieved through a simple upper and lower hinge connection. However, its structure is too simple and prone to swaying and deviation, resulting in inaccurate measurement data and inability to adapt to different transmission lines. Utility Model Content

[0005] The purpose of this invention is to provide an openable Rogowski coil for measuring lightning current in transmission lines, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an openable Rogowski coil for measuring lightning current in transmission lines, comprising a support body and a placement component, wherein a movable shaft is fixedly disposed at the left end of the support body, and a flip seat is fixedly disposed on the inner side of the upper end of the movable shaft;

[0007] The upper end of the support body is fixedly provided with a placement component, the placement component includes a placement seat fixedly provided on the upper inner side of the support body, a lower coil frame is fixedly provided on the inner side of the placement seat, and a lower current transformer is fixedly provided on the upper inner side of the lower coil frame.

[0008] A movable component is fixedly installed at the upper end of the movable shaft, and a fixed component is fixedly installed at the right end of the support body.

[0009] Preferably, the movable component includes a movable bracket fixedly mounted on the upper end of the movable shaft, and the movable bracket is fixedly connected to the flipping seat. A clamping frame is movably mounted inside the movable bracket. Mounting grooves are opened on the inner sides of both ends of the clamping frame, and the mounting grooves match the movable bracket. A limit block is fixedly mounted on the top end of the clamping frame.

[0010] Preferably, the movable component further includes multiple sets of positioning columns fixedly disposed at the bottom right side of the movable bracket, and multiple sets of limiting grooves are provided on the upper right side of the bracket body.

[0011] Preferably, the positioning post matches the limiting groove.

[0012] Preferably, an adjustment component is fixedly provided on the upper inner side of the movable support. The adjustment component includes an adjustment block fixedly provided on the inner side of the limiting block, and an adjustment screw is fixedly provided on the top of the adjustment block.

[0013] The adjusting screw passes through the upper end of the movable bracket and is threadedly engaged with the connection position of the movable bracket.

[0014] Preferably, the adjusting component further includes an upper coil frame fixedly disposed inside the clamping frame, an upper current transformer fixedly disposed inside the lower end of the upper coil frame, and integrators fixedly disposed at both vertical ends of the clamping frame.

[0015] Preferably, the fixing component includes a spring buckle fixedly disposed at the right end of the movable bracket, and a buckle seat is fixedly disposed at the right end of the bracket body;

[0016] The spring clip matches the clip seat.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This openable Rogowski coil for measuring lightning current in transmission lines allows operators to place the transmission line to be tested on the upper part of the mounting base during testing. The movable support is then rotated via a movable shaft and a flipping base, secured by the interlocking of multiple positioning posts and limiting slots. A spring clip then locks the support body and movable support in place, ensuring a more stable connection and preventing movement during measurement, thus guaranteeing accurate data. Furthermore, by rotating the adjusting screw, the lower adjusting block and clamping frame can be lowered to accommodate different transmission line specifications, ensuring a tight fit between the transmission line and the lower and upper current transformers. This prevents magnetic field leakage or signal distortion due to loosening. Stable physical contact minimizes measurement errors. The spring clip connection structure, combined with the interlocking of multiple positioning posts and limiting slots, provides a more secure connection. Installation can be performed without interrupting the circuit, allowing for rapid fixation and significantly reducing construction costs and time. The coil remains stable even under vibration or high-frequency current conditions. Attached Figure Description

[0019] Figure 1 This is an axonometric view of the present invention;

[0020] Figure 2 This is an axonometric view of the present invention;

[0021] Figure 3 This is an enlarged view of the placement component of this utility model;

[0022] Figure 4 This is an enlarged view of the adjusting component of this utility model.

[0023] In the diagram: 1. Main support body; 11. Movable shaft; 12. Flip-over seat;

[0024] 2. Placement components; 21. Placement base; 22. Lower coil frame; 23. Lower current transformer;

[0025] 3. Moving parts; 31. Moving bracket; 32. Clamping frame; 33. Mounting slot; 34. Limit block;

[0026] 35. Positioning post; 36. Limiting groove;

[0027] 4. Adjusting components; 41. Adjusting block; 42. Adjusting screw; 43. Upper coil frame;

[0028] 44. Current transformer; 45. Integrator;

[0029] 5. Fixing components; 51. Spring clip; 52. Clip seat. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-3 In this invention, a technical solution is provided: an openable Rogowski coil for measuring lightning current in transmission lines, comprising a support body 1 and a placement component 2, wherein a movable shaft 11 is fixedly provided at the left end of the support body 1, and a flip seat 12 is fixedly provided on the inner side of the upper end of the movable shaft 11.

[0032] A placement component 2 is fixedly installed at the upper end of the support body 1. The placement component 2 includes a placement seat 21 fixedly installed at the upper inner side of the support body 1. A lower coil frame 22 is fixedly installed inside the placement seat 21. A lower current transformer 23 is fixedly installed at the upper inner side of the lower coil frame 22.

[0033] Specifically, the bracket body 1 provides space for fixing and installing the upper placement seat 21. At the same time, the movable shaft 11 is hinged to the flip seat 12, and the movable bracket 31 can be flipped by the movement of the flip seat 12 to fix and clamp the power transmission line.

[0034] exist Figures 1-4 In the middle: A movable component 3 is fixedly installed at the upper end of the movable shaft 11. The movable component 3 includes a movable bracket 31 fixedly installed at the upper end of the movable shaft 11, and the movable bracket 31 is fixedly connected to the flip seat 12. A clamping frame 32 is movably installed inside the movable bracket 31. The clamping frame 32 has mounting grooves 33 on the inner sides of both ends. The mounting grooves 33 match the movable bracket 31. A limit block 34 is fixedly installed at the top of the clamping frame 32.

[0035] Specifically, the movable bracket 31 provides space for the inner clamping frame 32 to move and be installed. At the same time, the movable bracket 31 can be rotated through the hinge between the flipping seat 12 and the movable shaft 11, thereby flipping and clamping the current coil placed on the upper end of the placement seat 21.

[0036] exist Figures 1-4 In the middle: the movable component 3 also includes multiple sets of positioning columns 35 fixedly installed at the bottom right side of the movable bracket 31, and multiple sets of limiting grooves 36 are opened on the upper right side of the bracket body 1.

[0037] The positioning post 35 is matched with the limiting groove 36.

[0038] Specifically, the interlocking between the positioning column 35 and the limiting groove 36 makes the connection between the movable bracket 31 and the bracket body 1 more stable and precise, preventing shaking during the measurement process and thus ensuring the accuracy of the measurement data.

[0039] exist Figures 1-2 and Figure 4 In the middle: An adjustment component 4 is fixedly installed on the upper inner side of the movable bracket 31. The adjustment component 4 includes an adjustment block 41 fixedly installed inside the limit block 34, and an adjustment screw 42 is fixedly installed on the top of the adjustment block 41.

[0040] The adjusting screw 42 passes through the upper end of the movable bracket 31 and is threadedly engaged with the connection position of the movable bracket 31.

[0041] Specifically, when staff need to inspect and measure the transmission line, the movable support 31 can be flipped and clamped by the movable shaft 11 and the flipping seat 12. At the same time, according to different specifications of transmission lines, the adjusting screw 42 can be rotated to drive the adjusting block 41 at the bottom and the clamping frame 32 to move downward, which can ensure the tight fit of the transmission line and avoid magnetic field leakage or signal distortion due to loosening. Stable physical contact can minimize measurement errors.

[0042] exist Figures 1-2 and Figure 4 In the middle: the adjusting component 4 also includes an upper coil frame 43 fixedly installed inside the clamping frame 32, an upper current transformer 44 fixedly installed on the lower inner side of the upper coil frame 43, and integrators 45 fixedly installed at both vertical ends of the clamping frame 32.

[0043] Specifically, the upper coil frame 43 and the lower coil frame 22 can be combined into a whole, and the lower current transformer 23 and the upper current transformer 44 can form a complete coil. Through the mutual engagement of the movable bracket 31 and the bracket body 1, the transmission line can be measured.

[0044] exist Figures 3-4 A fixing component 5 is fixedly installed at the right end of the main body 1 of the middle support. The fixing component 5 includes a spring buckle 51 fixedly installed at the right end of the movable support 31, and a buckle seat 52 is fixedly installed at the right end of the main body 1 of the support.

[0045] The spring clip 51 is matched with the clip seat 52.

[0046] Specifically, the connection structure of the spring clip 51, together with the interlocking of multiple sets of positioning posts 35 and limiting grooves 36, makes the connection more stable. At the same time, it can be installed without interrupting the circuit, which can achieve quick fixation, significantly reduce construction costs and time, and ensure that the coil remains stable under vibration or high-frequency current environment.

[0047] During the testing process, the staff can place the transmission line to be tested on the upper end of the placement seat 21, and drive the movable bracket 31 to rotate through the movable shaft 11 and the flip seat 12. The bracket is fixed by the mutual engagement between multiple sets of positioning columns 35 and limit grooves 36. Then, the bracket body 1 and the movable bracket 31 are locked by the engagement between the spring buckle 51 and the buckle seat 52. At the same time, according to the different specifications of the transmission line, the adjustment screw 42 can be rotated to drive the adjustment block 41 and the clamping frame 32 at the bottom to move downward, which can ensure that the transmission line is tightly attached to the lower current transformer 23 and the upper current transformer 44.

[0048] Electrical equipment (including but not limited to coil frames, current transformers, integrators, etc.) is safely powered by an external power source and controlled by a control box. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An openable Rogowski coil for measuring lightning current in transmission lines, comprising a support body (1) and a placement component (2), wherein a movable shaft (11) is fixedly disposed at the left end of the support body (1), and a flip seat (12) is fixedly disposed on the inner side of the upper end of the movable shaft (11); characterized in that ； The upper end of the support body (1) is fixedly provided with a placement component (2). The placement component (2) includes a placement seat (21) fixedly provided on the upper inner side of the support body (1). The lower coil frame (22) is fixedly provided on the inner side of the placement seat (21). The lower current transformer (23) is fixedly provided on the upper inner side of the lower coil frame (22). The upper end of the movable shaft (11) is fixedly provided with a movable component (3), and the right end of the support body (1) is fixedly provided with a fixed component (5).

2. An openable Rogowski coil for measuring lightning current in transmission lines according to claim 1, characterized in that: The movable component (3) includes a movable bracket (31) fixedly installed on the upper end of the movable shaft (11), and the movable bracket (31) is fixedly connected to the flip seat (12). A clamping frame (32) is movably installed inside the movable bracket (31). Mounting grooves (33) are opened on the inner sides of both ends of the clamping frame (32). The mounting grooves (33) match the movable bracket (31). A limit block (34) is fixedly installed at the top of the clamping frame (32).

3. An openable Rogowski coil for measuring lightning current in transmission lines according to claim 2, characterized in that: The movable component (3) also includes multiple sets of positioning columns (35) fixedly installed at the bottom right side of the movable bracket (31), and multiple sets of limiting grooves (36) are opened on the upper right side of the bracket body (1).

4. An openable Rogowski coil for measuring lightning current in transmission lines according to claim 3, characterized in that: The positioning post (35) matches the limiting groove (36).

5. An openable Rogowski coil for measuring lightning current in transmission lines according to claim 4, characterized in that: An adjustment component (4) is fixedly installed on the upper inner side of the movable bracket (31). The adjustment component (4) includes an adjustment block (41) fixedly installed on the inner side of the limiting block (34). An adjustment screw (42) is fixedly installed on the top of the adjustment block (41). The adjusting screw (42) passes through the upper end of the movable bracket (31) and is threadedly engaged with the connection position of the movable bracket (31).

6. An openable Rogowski coil for measuring lightning current in transmission lines according to claim 5, characterized in that: The adjustment component (4) also includes an upper coil frame (43) fixedly installed inside the clamping frame (32). An upper current transformer (44) is fixedly installed on the lower inner side of the upper coil frame (43), and integrators (45) are fixedly installed at both vertical ends of the clamping frame (32).

7. An openable Rogowski coil for measuring lightning current in transmission lines according to claim 3, characterized in that: The fixing component (5) includes a spring buckle (51) fixedly installed at the right end of the movable bracket (31), and a buckle seat (52) is fixedly installed at the right end of the bracket body (1). The spring clip (51) is matched with the clip seat (52).

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