GIS built-in ultrahigh frequency sensor

Abstract

The utility model discloses a GIS built-in ultrahigh frequency sensor, comprising a flange plate and antenna plates, the flange plate is provided with a center hole and a plurality of mounting holes, one side of the flange plate is fixedly connected with an insulation column, one end of the insulation column far away from the flange plate is provided with two antenna plates, the two antenna plates are insulated and are opposite in position, and the two antenna plates are arranged in the flange plate. Two wires are arranged in the insulating column, one ends of the two wires are electrically connected with the two antenna plates respectively, and the other ends of the two wires penetrate out of the center hole. The two antenna plates are installed at the end, away from the flange plate, of the insulation column, positioning can be conducted at one hand hole through a time difference positioning method, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of GIS built-in UHF sensor technology, and in particular to a GIS built-in UHF sensor. Background Technology

[0002] Partial discharge within GIS / GIL is an early sign of insulation degradation, but existing UHF monitoring systems cannot determine the direction of the partial discharge source during single-point detection. For example, when only one sensor detects a signal, maintenance personnel find it difficult to determine which side of the equipment the defect is located on, leading to blind disassembly and inspection. Traditional time-difference positioning methods rely on multi-sensor networks, requiring integration with... Figure 4 It is necessary to install GIS built-in UHF sensors at two adjacent manholes 2 on pipe 1. Since the distance between the two manholes 2 is relatively large, sensor networking is quite complicated. Therefore, this application proposes a GIS built-in UHF sensor. Utility Model Content

[0003] The purpose of this invention is to provide a built-in UHF sensor for GIS, which enables time difference positioning by installing two antenna plates at the end of the insulating column away from the flange plate, making it more convenient to use.

[0004] To achieve the above objectives, this utility model provides a built-in UHF sensor for GIS, including a flange plate and an antenna plate. The flange plate is provided with a central hole and multiple mounting holes. An insulating column is fixed to one side of the flange plate. Two antenna plates are installed at the end of the insulating column away from the flange plate. The two antenna plates are insulated from each other and are positioned opposite each other. Two wires are provided inside the insulating column. One end of the two wires is electrically connected to the two antenna plates respectively, and the other end of the two wires passes through the central hole.

[0005] The insulating column is provided with a connecting plate extending to the two antenna plates on both sides at the end away from the flange plate, and the two antenna plates are respectively installed at both ends of the connecting plate.

[0006] A boss is provided on the side where the antenna plate connects to the connecting plate, and grooves are provided at both ends of the connecting plate. The boss is inserted into the grooves for fixation.

[0007] A sleeve is fixedly connected to the side of the flange plate that connects to the insulating column, and the insulating column and the sleeve are inserted and fixed.

[0008] The end of the insulating column connected to the flange plate is provided with a countersunk hole, which corresponds to the position of the center hole, and the countersunk hole and the center hole are filled with sealing material.

[0009] The flange plate has a sealing ring groove on one side of the insulating column, and the sealing ring groove is used to install a sealing ring.

[0010] The flange plate has two insulators installed on the side away from the insulating column, and two wires are electrically connected to the two insulators respectively.

[0011] The mounting hole is an arc-shaped elongated hole.

[0012] The flange plate has positioning marks at both ends of the two antenna plates.

[0013] The flange plate has a flange on one side of the insulating column.

[0014] Compared with the prior art, this utility model has the following technical effects:

[0015] 1. The mounting holes on the flange plate of this utility model are used for installation and connection by bolts and handhole flange. By installing two antenna plates at the end of the insulating column away from the flange plate, time difference positioning can be performed at a handhole, making it more convenient to use.

[0016] 2. This utility model increases the distance between two antenna plates by setting a connecting plate, thereby increasing the time difference between the two antenna plates when performing time difference positioning.

[0017] 3. The mounting hole of this utility model is an arc-shaped elongated hole, which facilitates the rotation and adjustment of the flange plate so that the two antenna plates can be arranged in the direction of the pipeline. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0021] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA.

[0022] Figure 4 This is a diagram showing the usage state of this utility model.

[0023] Figure label:

[0024] Pipe 1, manhole 2, manhole flange 3;

[0025] Flange plate 10, center hole 11, mounting hole 12, positioning mark 13, flange 14, sleeve 15, sealing ring groove 16, sealing ring 17;

[0026] Insulating post 20, connecting plate 21, groove 22, countersunk hole 23, sealing material 24;

[0027] Antenna plate 30, boss 31;

[0028] Wire 40;

[0029] Insulator 50. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0031] Example 1:

[0032] See Figure 1-4 A GIS-embedded ultra-high frequency sensor includes a flange plate 10 and antenna plates 30. The flange plate 10 has a central hole 11 and multiple mounting holes 12. An insulating post 20 is fixed to one side of the flange plate 10. Two antenna plates 30 are mounted on the end of the insulating post 20 away from the flange plate 10. The two antenna plates 30 are insulated from each other and are positioned opposite each other. Two wires 40 are installed inside the insulating post 20. One end of each wire 40 is electrically connected to one of the two antenna plates 30, and the other end of each wire 40 passes through the central hole 11. The mounting holes 12 on the flange plate 10 are used for installation and connection via bolts and a handhole flange 3. By mounting two antenna plates 30 on the end of the insulating post 20 away from the flange plate 10, time-difference positioning can be performed at a single handhole 2, making it more convenient to use.

[0033] In this embodiment, the insulating post 20 can be a rectangular column structure, and the two antenna plates 30 can be respectively bonded to both ends of the insulating post 20. In this embodiment, the insulating post 20 is made of insulating rubber. The wire 40 can be embedded in the insulating post 20, or a channel can be provided in the insulating post 20, through which the wire 40 passes.

[0034] In one of the solutions, see Figure 3 A sleeve 15 is fixedly connected to the side of the flange plate 10 that is connected to the insulating column 20, and the insulating column 20 and the sleeve 15 are inserted and fixed.

[0035] Furthermore, to improve the sealing performance between the insulating column 20 and the flange plate 10, a countersunk hole 23 is provided at the end where the insulating column 20 connects to the flange plate 10. The countersunk hole 23 corresponds to the center hole 11, and the countersunk hole 23 and the center hole 11 are filled with a sealing material 24 to seal the center hole 11. The sealing material 24 can be a resin material or a sealant. After the sealing material 24 cures, it has a good sealing effect.

[0036] See Figure 3 A sealing ring groove 16 is provided on one side of the insulating column 20 on the flange plate 10, and a sealing ring 17 is installed in the sealing ring groove 16. When the sensor is installed on the manhole flange 3, a seal is formed between the flange plate 10 and the manhole flange 3.

[0037] In this embodiment, see Figure 3 Two insulators 50 are installed on the side of the flange plate 10 away from the insulating column 20, and two conductors 40 are electrically connected to the two insulators 50 respectively. After the conductors 40 are connected to the contacts on the insulators 50, the conductors of the detection equipment are connected to the contacts on the insulators 50 during use.

[0038] Specifically, the insulator 50 has screws at both ends, and the two screws are insulated from each other. The flange plate 10 is provided with threaded holes. The screw at one end of the insulator 50 is connected and fixed to the threaded holes on the flange plate 10, and the wire 40 is connected to the screw at the other end.

[0039] Example 2:

[0040] Based on Example 1, see Figure 1 , 3 The insulating column 20 has a connecting plate 21 extending to both antenna plates 30 at the end away from the flange plate 10. The two antenna plates 30 are respectively installed at both ends of the connecting plate 21. By setting the connecting plate 21, the distance between the two antenna plates 30 is increased, thereby increasing the time difference between the two antenna plates 30 during time difference positioning.

[0041] It should be noted that the connecting plate 21 is also made of insulating material, and the insulating column 20 and the connecting plate 21 can be an integral structure.

[0042] Furthermore, to facilitate the connection between the antenna board 30 and the connecting plate 21, see [reference needed]. Figure 3 A boss 31 is provided on the side where the antenna plate 30 connects to the connecting plate 21, and grooves 22 are provided at both ends of the connecting plate 21. The boss 31 is inserted into the grooves 22 for fixation. Of course, during plug-in installation, glue can also be applied to the mating surfaces to enhance the stability of the connection.

[0043] Example 3:

[0044] Because the two antenna plates 30 need to be arranged along the direction of pipe 1 when installing the sensor, such as Figure 4 As shown, the welding position of the handhole flange 3 cannot guarantee that the two antenna plates 30 are arranged in the direction of the pipe 1. In other words, the bolt mounting hole positions on the handhole flange 3 of different handholes 2 are different, and the flange plate 10 needs to be rotated and adjusted.

[0045] Therefore, based on Example 1 or Example 2, see Figure 1 , 2 The mounting hole 12 is an arc-shaped elongated hole, which facilitates the rotation and adjustment of the flange plate 10 so that the two antenna plates 30 can be arranged in the direction of the pipe 1.

[0046] Furthermore, for easier observation, see... Figure 1 , 2 The flange plate 10 has positioning marks 13 at both ends of the two antenna plates 30. When the two positioning marks 13 are aligned with the direction of the pipe 1, the two antenna plates 30 are aligned with the direction of the pipe 1.

[0047] Furthermore, to improve the stability of the flange plate 10 during rotational adjustment, a flange 14 is provided on one side of the flange plate 10 located on the insulating column 20. For adjustment, see... Figure 4 The annular flange 14 is located inside the hand hole 2.

[0048] The method of use or principle of this utility model:

[0049] When using, please refer to Figure 4 Install the sensor onto the manhole flange 3. During installation, rotate the flange plate 10 to adjust the two antenna plates 30 to align with the direction of the pipe 1.

[0050] Then, the two wires 40 are connected to the monitoring device through shielded cables. The two antenna plates 30 send the collected partial discharge signals to the monitoring device for analysis. The high-frequency waveforms collected are time-stamped by a high-precision clock to analyze the order of arrival of the partial discharge waveforms of the two signals. The partial discharge source is located on the side of the antenna plate 30 where the partial discharge signal is detected first.

Claims

1. A GIS built-in ultra-high frequency sensor, comprising a flange plate (10) and an antenna plate (30), a center hole (11) and a plurality of mounting holes (12) are arranged on the flange plate (10), characterized in that: An insulating column (20) is fixed to one side of the flange plate (10). Two antenna plates (30) are installed at the end of the insulating column (20) away from the flange plate (10). The two antenna plates (30) are insulated from each other and are positioned opposite each other. Two wires (40) are provided inside the insulating column (20). One end of the two wires (40) is electrically connected to the two antenna plates (30) respectively, and the other end of the two wires (40) passes through the central hole (11).

2. The UHF sensor for GIS according to claim 1, characterized in that: The insulating column (20) is provided with a connecting plate (21) extending to the two antenna plates (30) on both sides at one end away from the flange plate (10), and the two antenna plates (30) are respectively installed at both ends of the connecting plate (21).

3. The UHF sensor according to claim 2, characterized in that: The antenna plate (30) is provided with a boss (31) on the side where it is connected to the connecting plate (21), and grooves (22) are provided at both ends of the connecting plate (21). The boss (31) is inserted into the groove (22) for fixation.

4. The UHF sensor in GIS according to claim 1, characterized in that: A sleeve (15) is fixedly connected to the side of the flange plate (10) that is connected to the insulating column (20), and the insulating column (20) and the sleeve (15) are inserted and fixed.

5. The UHF sensor according to claim 4, characterized in that: The insulating column (20) is provided with a countersunk hole (23) at one end connected to the flange plate (10). The countersunk hole (23) corresponds to the center hole (11). The countersunk hole (23) and the center hole (11) are filled with sealing material (24).

6. The UHF sensor according to claim 1, characterized in that: The flange plate (10) is provided with a sealing ring groove (16) on one side of the insulating column (20), and the sealing ring groove (16) is used to install the sealing ring (17).

7. The UHF sensor according to claim 1, characterized in that: The flange plate (10) has two insulators (50) installed on the side away from the insulating column (20), and two conductors (40) are electrically connected to the two insulators (50) respectively.

8. The UHF sensor according to claim 1, characterized in that: The mounting hole (12) is an arc-shaped elongated hole.

9. The GIS built-in UHF sensor according to claim 8, characterized in that: The flange plate (10) is provided with positioning marks (13) at both ends of the two antenna plates (30).

10. The UHF sensor built-in GIS according to claim 1 or 8, characterized in that: The flange plate (10) is provided with a flange (14) on one side of the insulating column (20).

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