External ultrahigh frequency sensor

Abstract

The utility model discloses an external ultrahigh frequency sensor. The external ultrahigh frequency sensor comprises a shell, and a fixing assembly, an acquisition piece and a connecting assembly which are arranged in the shell, wherein the fixing assembly comprises an extension arm folded in the shell, the extension arm is formed by sequentially and movably connecting a plurality of connecting joints, every two adjacent connecting joints are connected together through a joint buckle, and an extension groove allowing the extension arm to extend to the two sides outside the shell is formed in the side wall of the shell; according to the external ultrahigh frequency sensor provided by the utility model, the installation capability of the sensor is improved, the external ultrahigh frequency sensor can be conveniently installed on a partial discharge detection field device, and partial discharge signals can be stably and continuously collected.

Description

Technical Field

[0001] This utility model belongs to the field of ultra-high frequency partial discharge detection technology, and particularly relates to an external ultra-high frequency sensor. Background Technology

[0002] Partial discharge (PD) is an early sign of insulation degradation in power equipment, and its detection is crucial for preventing equipment failures and ensuring the safe operation of power systems. In power systems, particularly for gas-insulated switchgear (GIS) and transformers, partial discharge detection has always been a hot topic in the field of power equipment maintenance and diagnostics.

[0003] Currently, traditional partial discharge detection technology mainly relies on ultra-high frequency (UHF) sensors. These sensors are typically installed on the outside of transformers and GIS equipment to capture high-frequency electromagnetic wave signals generated by partial discharge events. However, current UHF sensors have some limitations, such as being heavy and having fixed installation locations, which limits their application flexibility in different live detection sites. They also have a narrow operating frequency range, which makes it impossible to effectively receive attenuated signals, resulting in incomplete coverage of all frequency components generated by partial discharge. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by providing an external ultra-high frequency sensor, which improves the sensor's installation capability and facilitates its installation on partial discharge detection field equipment, thereby maintaining stable and continuous acquisition of partial discharge signals.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An external ultra-high frequency sensor includes a housing and a fixing component, a data acquisition component, and a connecting component disposed within the housing;

[0007] The fixing component includes an extension arm folded inside the housing. The extension arm is connected sequentially by multiple connecting joints. Adjacent connecting joints are connected together by joint latches. The side wall of the housing has an extension groove for the extension arm to extend to both sides of the housing.

[0008] In this embodiment, since the partial discharge detection field equipment is relatively large, the extension arm inside the housing extends outward and the angle of the connecting joint is adjusted to facilitate the fixed position of the sensor at the live detection site, which facilitates the stability of the detection. At the same time, after the operation is completed, the extension arm is retracted into the housing for easy transportation and storage.

[0009] In one embodiment, the housing has a receiving cavity for accommodating the extension arm, and the opening of the receiving cavity is provided with an arc-shaped surface that fits and connects with the basin insulator.

[0010] In this embodiment, the arc-shaped surface is designed for bonding with the basin-type insulator, so that it can be well adapted and bonded when facing different structures.

[0011] In one embodiment, the fixing assembly further includes a control element and a switch button disposed on the housing, the control element being electrically connected to the switch button and the extension arm, respectively.

[0012] In one embodiment, the acquisition element and the control element are both integrated on a single circuit board, which is disposed within the housing.

[0013] In one embodiment, the connection assembly includes an ultra-high frequency connector and a support member. The ultra-high frequency connector is disposed inside the housing, with one end connected to the circuit board and the other end passing through the housing and extending outside the housing.

[0014] In one embodiment, the support member has a cylindrical structure, which is sleeved outside the ultra-high frequency connector, and one end of the support member abuts against the inner wall of the housing, while the other end abuts against the circuit board.

[0015] In one embodiment, the connection assembly further includes a nut and a washer, both of which are disposed on the end of the UHF connector extending outside the housing.

[0016] In one embodiment, a fixing plate is provided extending outward from the opening of the receiving cavity along the arc-shaped surface, and connecting columns are symmetrically arranged on the fixing plate.

[0017] In one embodiment, an annular cover is further provided on one side of the housing, the annular cover being fitted over the switch button and the height of the annular cover being higher than the switch button.

[0018] In one embodiment, the width of the extension groove is greater than the thickness of the connecting joint.

[0019] The beneficial effects of this utility model are as follows:

[0020] (1) Improve the installation capability of the sensor to facilitate its installation on the partial discharge detection field equipment and maintain stable and continuous acquisition of partial discharge signals;

[0021] (2) The arc-shaped surface at the opening of the housing cavity is used to fit and connect with the basin insulator so that it can fit well when facing different structures. Attached Figure Description

[0022] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0023] in:

[0024] Figure 1 This diagram shows the structure of the present invention in one direction;

[0025] Figure 2 This shows a structural schematic diagram of the present invention from another direction;

[0026] Figure 3 A schematic diagram of the housing structure of this utility model is shown;

[0027] Figure 4 A schematic diagram showing the extension arm of this utility model extending outside the housing is shown;

[0028] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0029] Figure label:

[0030] 1-Housing; 2-Collection component; 3-Connecting assembly; 4-Receiving cavity; 5-Arc-shaped surface; 6-Control component; 7-Ultra-high frequency connector; 8-Support component; 9-Gasket; 10-Nut; 11-Fixing plate; 12-Connecting column; 13-Fixing assembly; 14-Extension arm; 15-Switch button; 16-Connecting joint; 17-Extension groove; 18-Annular cover. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] This utility model provides an external ultra-high frequency sensor, such as... Figure 1 and Figure 4 As shown, it includes a fixing component 13, which is disposed inside the housing 1 and can extend to the outside of both sides of the housing 1. Since the current partial discharge detection field equipment is often large in size and is made of metal, sometimes it is not easy to fix the sensor in position without support points. That is, the fixing component 13 facilitates the sensor to be fixed in position at the live detection field, which facilitates the stability of the detection.

[0033] Specifically, the fixing component 13 includes: an extension arm 14, a control component 6, and a switch button 15. The extension arm 14 is folded and disposed on both sides inside the housing 1 and can extend to both sides outside the housing 1 in a joint structure. The control component 6 and the acquisition component 2 are integrated on the same circuit board and disposed inside the housing 1. The control component 6 can control the extension arm 14 to open and extend directly to the outside of the housing 1. The switch button 15 is disposed on the housing 1 and connected to the circuit board of the control component 6. The control component 6 controls the extension arm 14 to open and close through the switch button 15. When the switch button 15 is pressed, the extension arm 14 opens from inside the housing 1 to both sides outside the housing 1. When the switch button 15 is pressed again, the extension arm 14 returns to the inside of the housing 1. Before partial discharge signal detection is realized, the extension arm 14 is folded and disposed inside the housing 1.

[0034] Furthermore, such as Figure 3 As shown, the switch button 15 is fixed on the outer side of the housing 1. The housing 1 is placed on the GIS basin insulator or transformer. When the switch button 15 is pressed, the extension arm 14 is extended from inside the housing 1 to outside the housing 1 with one key. The position of the extension arm 14 is adjusted to fix it on the equipment to maintain stable and continuous acquisition of partial discharge signals. After the signal acquisition structure is completed, the fixed support of the extension arm 14 is released, and the switch button 15 is pressed again to fold it back into the housing 1. The structure is simple, convenient and easy to use.

[0035] In one embodiment, such as Figure 2 As shown, the extension arm 14 includes several connecting joints 16. Adjacent connecting joints 16 can be rigidly rotatably connected, and joint buckles are provided between each pair of connecting joints 16. The connecting joints 16 are folded inside the housing 1. After the extension arm 14 is automatically opened by the switch button 15, the connecting joints 16 are controlled by the circuit board of the control component 6 and extend outward to both sides of the housing 1. After the connecting joints 16 extend out of the housing 1, the connection angle between different connecting joints 16 can be manually adjusted. After adjustment, the structure is fixed with buckles to achieve rigid fixation and support of the sensor, and then partial discharge signal is collected. It can adapt to different detection sites.

[0036] In one embodiment, such as Figure 1 As shown, the housing 1 has a receiving cavity 4 inside, and an arc-shaped surface 5 is provided at the opening of the receiving cavity 4. A flexible structure is provided at the edge of the arc-shaped surface 5 for bonding and connecting with the basin insulator, so that it can be well adapted and bonded when facing different structures.

[0037] In one embodiment, such as Figure 1 and Figure 2 As shown, the sensor also includes a data acquisition component 2 and a connection component 3. The data acquisition component 2 is a circuit board, which is disposed inside the housing 1. One end of the connection component 3 is disposed inside the housing 1 and connected to the data acquisition component 2, and the other end extends outside the housing 1.

[0038] Furthermore, such as Figure 2 As shown, the connection component 3 includes an ultra-high frequency connector 7 and a support member 8. One end of the ultra-high frequency connector 7 is disposed inside the housing 1 and connected to the acquisition unit 2, and the other end extends to the center of the outer surface of the housing 1. The support member 8 is disposed inside the housing 1 and sleeved on the outside of the ultra-high frequency connector 7. The ultra-high frequency connector 7 is an N-type adapter.

[0039] Specifically, the support member 8 is a hollow cylindrical structure. One end of the support member 8 abuts against the acquisition member 2, and the other end abuts against the inner surface of the housing 1. The ultra-high frequency connector 7 is sleeved inside the support member 8.

[0040] In one embodiment, the connecting assembly 3 further includes a washer 9 and a nut 10, the nut 10 and the washer 9 being disposed on one end of the ultra-high frequency connector 7 extending outside the housing 1;

[0041] In one embodiment, such as Figure 1 As shown, a fixing plate 11 is provided at the opening of the receiving cavity 4 along the arc-shaped surface 5. The fixing plate 11 is attached to the basin-type insulator, and connecting posts 12 are symmetrically arranged on the fixing plate 11.

[0042] In one embodiment, such as Figure 3 As shown, a ring cover 18 is provided on the housing 1. The ring cover 18 is sleeved on the switch button 15. The height of the ring cover 18 is higher than that of the switch button 15 to prevent the switch button 15 from being accidentally activated to open the extension arm 14.

[0043] In one embodiment, such as Figure 1 and Figure 4 As shown, the housing 1 is symmetrically provided with extension grooves 17, and the extension arm 14 extends to the outside of the housing 1 through the extension grooves 17. The width of the extension grooves 17 is greater than the thickness of the connecting joints 16 of the extension arm 14, so that the extension arm 14 can be opened and extended to the outside of the housing 1.

[0044] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. An external ultra-high frequency sensor, characterized in that, Includes a housing and a fixing component, a collecting component, and a connecting component disposed within the housing; The fixing component includes an extension arm folded inside the housing. The extension arm is connected sequentially by multiple connecting joints. Adjacent connecting joints are connected together by joint latches. The side wall of the housing has extension slots for the extension arm to extend to both sides of the housing.

2. The external ultra-high frequency sensor according to claim 1, characterized in that, The housing has a cavity for accommodating the extension arm, and the opening of the cavity has an arc-shaped surface that fits and connects with the basin insulator.

3. An external ultra-high frequency sensor according to claim 1, characterized in that, The fixing assembly also includes a control component and a switch button disposed on the housing, the control component being electrically connected to the switch button and the extension arm respectively.

4. An external ultra-high frequency sensor according to claim 3, characterized in that, The acquisition device and the control device are both integrated on a single circuit board, which is located inside the housing.

5. An external ultra-high frequency sensor according to claim 4, characterized in that, The connection assembly includes an ultra-high frequency connector and a support member. The ultra-high frequency connector is disposed inside the housing, with one end connected to the circuit board and the other end passing through the housing and extending outside the housing.

6. An external ultra-high frequency sensor according to claim 5, characterized in that, The support member has a cylindrical structure and is sleeved outside the ultra-high frequency connector. One end of the support member abuts against the inner wall of the housing, and the other end abuts against the circuit board.

7. An external ultra-high frequency sensor according to claim 5, characterized in that, The connecting assembly also includes a nut and a washer, both of which are disposed on the end of the ultra-high frequency connector extending outside the housing.

8. An external ultra-high frequency sensor according to claim 2, characterized in that, A fixing plate is provided extending outward from the opening of the receiving cavity along the arc-shaped surface, and connecting columns are symmetrically arranged on the fixing plate.

9. An external ultra-high frequency sensor according to claim 3, characterized in that, A ring cover is also provided on one side of the housing. The ring cover is fitted over the switch button and the height of the ring cover is higher than that of the switch button.

10. An external ultra-high frequency sensor according to claim 1, characterized in that, The width of the extension groove is greater than the thickness of the connecting joint.

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