Fixing device of GIS disc insulator ultrahigh frequency sensor
By designing a fixing device for the UHF sensor on a GIS disc insulator, a strong rubber ring and a limiting ring are used to secure the sensor to the insulator, solving the problems of low detection efficiency and safety hazards caused by unstable sensor fixing, and achieving efficient and safe detection results.
Patent Information
- Application Number
- CN202422986666.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-05
AI Technical Summary
In the detection of ultra-high frequency partial discharge in GIS equipment, the lack of a dedicated sensor fixing device leads to low detection efficiency and safety hazards, affecting the accuracy of detection results and the stability of the equipment.
A fixing device for a UHF sensor on a GIS disc insulator was designed, including a fixing bracket and an elastic element. The sensor is fastened to the insulator using a strong rubber ring and a limiting ring to ensure close contact between the sensor and the insulator surface.
This ensures a stable connection for the sensors, improves the accuracy of detection results, prevents sensors from falling off or shifting position, and guarantees the safety of staff.
Smart Images
Figure CN223551831U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of GIS technology, specifically a fixing device for a GIS disc insulator ultra-high frequency sensor. Background Technology
[0002] Currently, with the development of power grid construction, the number of GIS substations is constantly increasing. However, once an insulation fault occurs within these substations during operation, it can easily develop into equipment failure, disrupting the normal operation of the power system and adversely affecting the national economy and social order. Partial discharge is a significant factor leading to GIS equipment failure. Including ultra-high frequency partial discharge detection as one of the live-line testing items for GIS equipment makes it easier to detect potential faults in GIS (Gas Insulated Metal Enclosed Switchgear), enabling staff to promptly assess equipment status and effectively prevent accidents. This is of great significance for maintaining the safe operation of GIS equipment.
[0003] When performing UHF partial discharge detection on GIS, there is often no dedicated UHF sensor fixing device on site. Usually, the sensor is held by hand by the staff, which is time-consuming and laborious. At the same time, the test results may be affected by the poor contact between the sensor and the equipment under test. Especially for large GIS, which have complex structures and varying heights, it is difficult to place the UHF sensor, which reduces the efficiency of the staff and also poses a threat to their personal safety. During the test, the staff may make mistakes due to fatigue, causing the UHF sensor to fall from their hands and hit the GIS, causing damage to the UHF sensor and even affecting the stable operation of the GIS. Utility Model Content
[0004] The purpose of this utility model is to provide a fixing device for a GIS disc insulator UHF sensor, so as to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a fixing device for a GIS disc insulator ultra-high frequency sensor, including a fixing bracket that clamps the ultra-high frequency sensor together with the GIS disc insulator and an elastic element that presses the fixing bracket onto the GIS disc insulator. The fixing bracket includes a fixing plate that abuts against the top of the high frequency sensor and four limiting posts welded to the top of the fixing plate. The four limiting posts are distributed at the four corners of the fixing plate and are connected by the elastic element.
[0006] Furthermore, the fixing plate is U-shaped with the opening facing downwards, and the top of the high-frequency sensor is embedded in the opening of the fixing plate.
[0007] Furthermore, a rubber pad is adhered to the opening of the fixing plate.
[0008] Furthermore, the rubber pad has resistance strips evenly distributed on the side closest to the high-frequency sensor.
[0009] Furthermore, the elastic element consists of four high-strength rubber rings, with both ends of the high-strength rubber rings respectively connected to the nut and the limiting post of the GIS disc insulator.
[0010] Furthermore, a limiting ring is provided at the top of the limiting post, and the outer diameter of the limiting ring is greater than the outer diameter of the limiting post.
[0011] The beneficial effects achieved by this utility model are as follows:
[0012] The elastic force of the strong rubber ring generates a force on the fixing plate towards the GIS disc insulator, causing the fixing plate and the GIS disc insulator to clamp the UHF sensor together. This ensures that the UHF sensor is tightly attached to the surface of the GIS disc insulator, preventing it from falling off. This close contact between the UHF sensor and the GIS disc insulator under test results in accurate detection.
[0013] Four strong rubber rings exert force on the four corners of the fixing plate in the direction of the GIS disc insulator, so that the fixing plate is evenly stressed and the sliding of the strong rubber rings can prevent uneven stress on the four corners of the fixing plate, which would cause the fixing plate to deviate.
[0014] The rubber pads, in conjunction with the resistance strips, prevent slippage between the ultra-high frequency sensor and the mounting plate.
[0015] The limit ring is designed to prevent the strong rubber ring from falling off. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the fixing device for a GIS disc insulator UHF sensor in one embodiment;
[0017] Figure 2 This is a cross-sectional view of the fixing plate in the embodiment. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings.
[0019] like Figure 1 As shown, this utility model discloses a fixing device for a GIS disc insulator ultra-high frequency sensor, including: a fixing bracket 3 that clamps the ultra-high frequency sensor 2 together with the GIS disc insulator 1, and an elastic member 4 that presses the fixing bracket 3 onto the GIS disc insulator 1. The fixing bracket 3 includes a fixing plate 31 that abuts against the top of the high frequency sensor 2 and four limiting posts 32 welded to the top of the fixing plate 31. The four limiting posts 32 are distributed at the four corners of the fixing plate 31 and are connected by the elastic member 4.
[0020] Furthermore, such as Figure 1-2 As shown, the fixing plate 31 is U-shaped with the opening facing downwards, and the top of the high-frequency sensor 2 is embedded in the opening of the fixing plate 31.
[0021] Furthermore, such as Figure 2 As shown, in order to prevent slippage between the UHF sensor and the fixing plate, a rubber pad 5 is glued inside the opening of the fixing plate 31.
[0022] Furthermore, such as Figure 2 As shown, in order to further prevent slippage between the ultra-high frequency sensor and the fixed plate, the rubber pad 5 is uniformly provided with resistance strips 51 on the side near the high frequency sensor 2.
[0023] Furthermore, such as Figure 1 As shown, the elastic element 4 consists of four high-strength rubber rings, with both ends of the high-strength rubber rings being sleeved with the nut 11 and the limiting post 32 of the GIS disc insulator 1, respectively.
[0024] Furthermore, such as Figure 2 As shown, in order to prevent the strong rubber ring from falling off, a limiting ring 33 is provided at the top of the limiting post 32. The outer diameter of the limiting ring 33 is greater than the outer diameter of the limiting post 32, and the limiting ring 33 provides a limiting function for the strong rubber ring.
[0025] Based on the above structure, such as Figure 1-2 As shown, during use, the high-frequency sensor 2 is first placed on the GIS disc insulator 1. Then, the opening of the fixing plate 31 is pressed tightly against the high-frequency sensor 2, and the top of the high-frequency sensor 2 is embedded into the opening of the fixing plate 31 by pressing. Finally, the two ends of the strong rubber ring are respectively fitted onto the nuts 11 and the limiting post 32 on the corresponding sides. Under the elastic force of the strong rubber ring, the fixing plate 31 and the GIS disc insulator 1 together clamp the ultra-high frequency sensor 2, so that the ultra-high frequency sensor 2 is tightly attached to the surface of the GIS disc insulator 1, preventing the ultra-high frequency sensor 2 from falling off the GIS disc insulator 1. This ensures that the contact between the ultra-high frequency sensor 2 and the GIS disc insulator 1 being tested is tight, resulting in accurate detection results.
[0026] During this process, the four strong rubber rings exert forces on the four corners of the fixing plate 31 in the direction of the GIS disc insulator 1, so that the fixing plate 31 is subjected to uniform force and avoids the sliding of the strong rubber rings, which would cause uneven force on the four corners of the fixing plate 31 and thus cause the position of the fixing plate 31 to deflect.
[0027] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A fixing device for a GIS disc insulator UHF sensor, comprising a fixing bracket (3) that clamps the UHF sensor (2) together with the GIS disc insulator (1) and an elastic element (4) that presses the fixing bracket (3) onto the GIS disc insulator (1), characterized in that: The fixed bracket (3) includes a fixed plate (31) that abuts against the top of the high-frequency sensor (2) and four limiting posts (32) welded to the top of the fixed plate (31). The four limiting posts (32) are distributed at the four corners of the fixed plate (31) and are connected by elastic members (4).
2. The fixing device for a GIS disc insulator UHF sensor according to claim 1, characterized in that: The fixing plate (31) is U-shaped with the opening facing downwards, and the top of the high-frequency sensor (2) is embedded in the opening of the fixing plate (31).
3. The fixing device for a GIS disc insulator UHF sensor according to claim 2, characterized in that: A rubber pad (5) is glued inside the opening of the fixing plate (31).
4. The fixing device for a GIS disc insulator UHF sensor according to claim 3, characterized in that: The rubber pad (5) has resistance strips (51) evenly arranged on the side near the high-frequency sensor (2).
5. A fixing device for a GIS disc insulator UHF sensor according to any one of claims 1-4, characterized in that: The elastic element (4) consists of four high-strength rubber rings, the two ends of which are respectively connected to the nut (11) and the limiting post (32) of the GIS disc insulator (1).
6. The fixing device for a GIS disc insulator UHF sensor according to claim 5, characterized in that: The top of the limiting post (32) is provided with a limiting ring (33), and the outer diameter of the limiting ring (33) is greater than the outer diameter of the limiting post (32).