Omnidirectional ultrahigh frequency partial discharge on-line monitoring device for switch cabinet

Abstract

The utility model discloses a switch cabinet omnidirectional ultrahigh frequency partial discharge on-line monitoring device, comprising an on-line monitoring device installed in a switch cabinet main body, and an ultrahigh frequency partial discharge detector is assembled in the on-line monitoring device; an electric sliding rail is assembled at the top end in the switch cabinet main body, a sliding block is assembled on the electric sliding rail, and a fixed sleeve plate is assembled at the front end of the sliding block; an equipment support is assembled at the bottom end of the online monitoring equipment, a steering seat is assembled at the top end of the equipment support, and the online monitoring equipment is assembled on the steering seat; an embedding opening is formed in the front side wall of the fixing sleeve plate, an embedding plate is assembled at the end of the equipment support, and the embedding plate is assembled in the embedding opening; according to the switch cabinet omni-directional ultrahigh frequency partial discharge online monitoring device, the device is installed through the clamping structure and the embedded assembly, so that the monitoring device is convenient to disassemble and assemble, and the maintenance efficiency of the monitoring device is improved.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, specifically to an omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear. Background Technology

[0002] High and low voltage switchgear is equipment used to connect high-voltage or low-voltage cables. External lines first enter the main control switch inside the cabinet, then the branch control switches. Each branch is configured according to its needs. Traditional operation and maintenance methods relying on manual inspection are labor-intensive, have long inspection cycles, and are inefficient, failing to effectively and promptly detect defects. Furthermore, the labor costs are high; for example, simple, repetitive, and mechanical tasks such as meter reading and unpacking inspections consume a significant amount of maintenance personnel's time. Therefore, it is necessary to develop an online monitoring system for power distribution systems, using remote monitoring methods to understand the equipment status.

[0003] However, existing online monitoring devices still have some shortcomings. For example, it is not convenient to disassemble and install the device inside the switch cabinet, which affects the maintenance efficiency of the equipment. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear, which solves the aforementioned problems.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear, comprising an online monitoring device installed inside the switchgear body, wherein an ultra-high frequency partial discharge detector is installed inside the online monitoring device;

[0006] The top of the inside of the switch cabinet body is equipped with an electric slide rail, a slider is mounted on the electric slide rail, and a fixing sleeve is mounted on the front end of the slider.

[0007] The bottom of the online monitoring device is equipped with a device bracket, and the top of the device bracket is equipped with a steering seat. The online monitoring device is mounted on the steering seat.

[0008] The front side wall of the fixed sleeve is provided with an insertion opening, and the end of the equipment bracket is equipped with an insertion plate, which is installed in the insertion opening.

[0009] The fixed sleeve and the slider are connected by bolts.

[0010] The fixed sleeve includes a fixed sleeve a and a fixed sleeve b arranged opposite to each other, and the fixed sleeve a and the fixed sleeve b are engaged with each other by a snap-fit ​​structure.

[0011] Preferably, the snap-fit ​​structure includes a snap-fit ​​block installed on the side wall of the fixed sleeve a and a snap-fit ​​groove opened on the side wall of the fixed sleeve b, wherein the snap-fit ​​block snaps into the snap-fit ​​groove.

[0012] Preferably, the card block is internally fitted with an elastic element.

[0013] Preferably, the bottom end of the bolt body is provided with a circular groove, the bolt rod is installed inside the circular groove, the side wall of the slider is provided with a threaded groove, and the bolt rod is screwed into the threaded groove.

[0014] Preferably, a fixing ring is installed on the upper outer end of the bolt rod, and an annular pressure plate, a spring and an annular rubber sheet are fitted on the circumferential surface of the bolt rod, with a compression block installed at the upper edge of the annular rubber sheet.

[0015] Preferably, the outer wall of the bolt body is provided with an arc surface, and the surface of the arc surface is provided with anti-slip texture.

[0016] Preferably, the UHF partial discharge detector includes an omnidirectional UHF electromagnetic wave acquisition antenna, an UHF partial discharge detection circuit, a microprocessor, and a communication interface. The communication interface includes a LoRa wireless interface, an Ethernet interface, and an RS485 serial port. The online monitoring device is connected to the visualization gateway via an ID number.

[0017] This utility model provides an omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear. It has the following advantages: by setting an electric slide rail assembly inside the switchgear body, and installing the online monitoring equipment within the slide rail via a fixing plate and equipment bracket, and using a snap-fit ​​structure and embedding components, the device is easily disassembled and assembled, thus improving maintenance efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the online monitoring device of this utility model.

[0020] Figure 3 This is a schematic diagram of the snap-fit ​​structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the bolt body of this utility model;

[0022] Figure 5 This is a modular schematic diagram of the present invention.

[0023] In the diagram: 1 Switch cabinet body, 2 Slider, 3 Online monitoring equipment, 4 Electric slide rail, 5 Fixing sleeve a, 6 Bolt body, 61 Circular groove, 62 Annular rubber sheet, 63 Circular groove, 64 Extrusion block, 65 Annular pressure plate, 66 Fixing ring, 67 Spring, 68 Arc surface, 7 Mounting plate, 8 Mounting opening, 9 Fixing sleeve b, 10 Equipment bracket, 11 Rotating seat, 12 Card block, 13 Card slot, 14 Elastic element. Detailed Implementation

[0024] 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. Example

[0025] like Figure 1-4 As shown, an omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear includes an online monitoring device 3 installed inside the switchgear body 1, wherein an ultra-high frequency partial discharge detector is installed inside the online monitoring device 3.

[0026] The switch cabinet body 1 is equipped with an electric slide rail 4 at its inner top, and a slider 2 is mounted on the electric slide rail 4. A fixed sleeve plate is mounted on the front end of the slider 2. The slider 2 can move inside the electric slide rail 4, thereby moving at the inner top of the switch cabinet body 1.

[0027] The bottom of the online monitoring device 3 is equipped with a device bracket 10, and the top of the device bracket 10 is equipped with a steering seat 11. The online monitoring device 3 is mounted on the steering seat 11, and the steering of the online monitoring device 3 can be achieved through the steering seat 11.

[0028] The front side wall of the fixed sleeve is provided with an insertion opening 8. The end of the equipment bracket 10 is equipped with an insertion plate 7. The insertion plate 7 is installed in the insertion opening 8. The cross-sectional area of ​​the insertion plate 7 is larger than the cross-sectional area of ​​the insertion opening 8, so that after the insertion plate 7 is inserted into the insertion opening 8, it wraps and fixes it.

[0029] The fixed sleeve plate and the slider 2 are connected by a bolt body 6. The side wall of the fixed sleeve plate has a through hole, and the bolt body 6 is inserted into the through hole.

[0030] The fixed sleeve plate includes a fixed sleeve a5 and a fixed sleeve b9 arranged opposite to each other. The fixed sleeve a5 and the fixed sleeve b9 are connected by a snap-fit ​​structure. An insertion opening 8 is opened on the opposite side wall of the fixed sleeve a5 and the fixed sleeve b9. The insertion opening 8 consists of two parts, left and right, respectively set on the fixed sleeve a5 and the fixed sleeve b9. After the two are fixed, the insertion opening 8 is formed.

[0031] The snap-fit ​​structure includes a snap-fit ​​block 12 installed on the side wall of the fixed sleeve a5 and a snap-fit ​​groove 13 opened on the side wall of the fixed sleeve b9. The snap-fit ​​block 12 snaps into the snap-fit ​​groove 13, and the fixed sleeve a5 and the fixed sleeve b9 are fixed by snapping the snap-fit ​​block 12 into the snap-fit ​​groove 13.

[0032] The card block 12 is internally equipped with an elastic element 14, which can improve the elasticity of the card block 12.

[0033] The bottom end of the bolt body 6 is provided with a circular groove 61, and a bolt rod 63 is installed inside the circular groove 61. The side wall of the slider 2 is provided with a threaded groove, and the bolt rod 63 is screwed into the threaded groove.

[0034] A retaining ring 66 is installed on the upper outer end of the bolt rod 63. An annular pressure plate 65, a spring 67, and an annular rubber sheet 62 are fitted on the circumferential surface of the bolt rod 63. A compression block 64 is installed at the upper edge of the annular rubber sheet 62. The annular pressure plate 65 is located above the retaining ring 66, the spring 67 is located above the annular pressure plate 65, and the annular rubber sheet 62 is located below the retaining ring 66. This causes the annular pressure plate 65 to be pressed downward by the spring 67, and the compression block 64 to be pressed downward by the annular pressure plate 65. This further compresses the edge of the annular rubber sheet 62 by the compression block 64, thereby improving the sealing effect.

[0035] The outer wall of the bolt body 6 is provided with an arc surface 68, and the surface of the arc surface 68 is provided with anti-slip texture. The arc surface 68 facilitates the driving of the bolt body 6.

[0036] The ultra-high frequency partial discharge detector includes an omnidirectional ultra-high frequency electromagnetic wave acquisition antenna, an ultra-high frequency partial discharge detection circuit, a microprocessor, and a communication interface. The communication interface includes a LoRa wireless interface, an Ethernet interface, and an RS485 serial port. The online monitoring device 3 is connected to the visualization gateway through an ID number. The omnidirectional ultra-high frequency electromagnetic wave acquisition antenna is fixed inside the online monitoring device 3 and has a bandwidth of 300-2000MHz.

[0037] The ultra-high frequency partial discharge detection circuit is an AD8313 detector + TPH2501 operational amplifier with a bandwidth of 100-2500MHz.

[0038] The microprocessor operates at a temperature of -40 to 85°C and is a Cortex-M7.

[0039] The communication interface includes a LoRa wireless interface, an Ethernet interface, and an RS485 serial port. The LoRa wireless interface has a bandwidth of 470MHz and uses an SX1268 chip.

[0040] Working process and principle: When in use, first, open the cabinet door of the switch cabinet body 1, control the electric slide rail 4 to move the slider 2 forward, then place the mounting plate 7 at the end of the equipment bracket 10 with the online monitoring device 3 installed into the mounting opening 8, then fix the fixing sleeve a5 and fixing sleeve b9 to fix the equipment bracket 10, and then install the fixing sleeve plate onto the slider 2 by bolting the body 6.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear, comprising an online monitoring device (3) installed inside the switchgear body (1), characterized in that: The online monitoring device (3) is equipped with an ultra-high frequency partial discharge detector. The switch cabinet body (1) is equipped with an electric slide rail (4) at its top interior, and a slider (2) is mounted on the electric slide rail (4). A fixing plate is mounted on the front end of the slider (2). The bottom of the online monitoring device (3) is equipped with a device bracket (10), and the top of the device bracket (10) is equipped with a steering seat (11). The online monitoring device (3) is mounted on the steering seat (11). The front side wall of the fixed sleeve is provided with an insertion opening (8), and the end of the equipment bracket (10) is equipped with an insertion plate (7), which is installed in the insertion opening (8). The fixed sleeve and the slider (2) are connected by a bolt body (6); The fixed sleeve includes a fixed sleeve a (5) and a fixed sleeve b (9) arranged opposite to each other, and the fixed sleeve a (5) and the fixed sleeve b (9) are connected by a snap-fit ​​structure.

2. The omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear according to claim 1, characterized in that: The snap-fit ​​structure includes a snap-fit ​​block (12) installed on the side wall of the fixed sleeve a (5) and a snap-fit ​​groove (13) opened on the side wall of the fixed sleeve b (9), wherein the snap-fit ​​block (12) snaps into the snap-fit ​​groove (13).

3. The omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear according to claim 2, characterized in that: The card block (12) is internally fitted with an elastic element (14).

4. The omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear according to claim 1, characterized in that: The bottom end of the bolt body (6) is provided with a circular groove (61), and a bolt rod (63) is installed inside the circular groove (61). The side wall of the slider (2) is provided with a threaded groove, and the bolt rod (63) is screwed into the threaded groove.

5. The omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear according to claim 4, characterized in that, A fixing ring (66) is installed on the upper outer end of the bolt rod (63). An annular pressure plate (65), a spring (67) and an annular rubber sheet (62) are fitted on the circumferential surface of the bolt rod (63). An extrusion block (64) is installed at the upper edge of the annular rubber sheet (62).

6. The omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear according to claim 5, characterized in that, The outer wall of the bolt body (6) is provided with an arc surface (68), and the surface of the arc surface (68) is provided with anti-slip texture.

7. The omnidirectional ultra-high frequency partial discharge online monitoring device for switchgear according to claim 1, characterized in that; The ultra-high frequency partial discharge detector includes an omnidirectional ultra-high frequency electromagnetic wave acquisition antenna, an ultra-high frequency partial discharge detection circuit, a microprocessor, and a communication interface. The communication interface includes a LoRa wireless interface, an Ethernet interface, and an RS485 serial port. The online monitoring device (3) is connected to the visualization gateway through an ID number.

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