Insulation basin pouring hole shielding structure convenient for partial discharge detection

Abstract

The utility model belongs to the field of detection of high-voltage electrical equipment, and discloses an insulation basin pouring hole shielding structure convenient for partial discharge detection, which adopts a quick disassembly and assembly component to connect a substrate and the outer wall of an insulation basin, and replaces the traditional mode of fastening a metal plate by a screw; by means of the design, the disassembling and assembling process during inspection is greatly simplified, the tedious work of disassembling and assembling the fasteners one by one is avoided, therefore, the working efficiency is remarkably improved, and the time and labor cost needed by inspection are reduced. And meanwhile, the first shielding ring connected with the inner wall of the substrate is connected with the metal ring of the insulating spacer, is arranged around the pouring hole, and forms a short-circuit totally-closed electromagnetic shielding body together with the substrate, so that the shielding effect is ensured, and the work progress and quality of partial discharge detection work are not influenced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to high -voltage electrical equipment detection technical field, concretely relates to a kind of insulating basin pouring hole shielding structure convenient to partial discharge detection. BACKGROUND

[0002] Partial discharge is one of the main problems threatening the safety of power grid, if partial discharge cannot be monitored in time, it is easy to evolve into breakdown discharge, and then cause power grid outage or safety accident, and partial discharge monitoring of high-voltage electrical equipment has become an important work of equipment operation and maintenance. As an effective means of partial discharge monitoring, partial discharge inspection and full pulse long-time monitoring usually use external ultra-high frequency sensor to collect partial discharge signals through insulating basin pouring hole.

[0003] In order to prevent external interference signals from entering the internal of high-voltage electrical equipment, so as to avoid causing partial discharge monitoring background false alarm or affecting fault diagnosis, shielding structure is installed on the insulating basin pouring hole. However, the existing pouring hole shielding usually adopts screw fastening metal plate method, and the number of insulating basin in many power stations is large, so it is time-consuming and laborious to disassemble and assemble fasteners one by one during inspection, which leads to low work efficiency and affects the work progress of partial discharge detection operation.

[0004] Therefore, the existing pouring hole shielding structure usually adopts screw fastening metal plate method, and it is time-consuming and laborious to disassemble and assemble fasteners one by one during inspection, which leads to low work efficiency. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of insulating basin pouring hole shielding structure convenient to partial discharge detection to solve the technical problem that the existing pouring hole shielding structure usually adopts screw fastening metal plate method, and it is time-consuming and laborious to disassemble and assemble fasteners one by one during inspection, which leads to low work efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical contents:

[0007] A kind of insulating basin pouring hole shielding structure convenient to partial discharge detection, including shielding cover;

[0008] The shielding cover includes a substrate;

[0009] The substrate is connected with the outer wall of insulating basin by quick disassembly and assembly component;

[0010] The inner wall of the substrate is connected with a first shielding ring;

[0011] The first shielding ring is connected with the metal ring of insulating basin, and the first shielding ring is arranged around the pouring hole;

[0012] The first shielding ring, the metal ring of insulating basin and the substrate constitute a short-circuit fully-enclosed electromagnetic shield.

[0013] Further, the quick disassembly assembly comprises a Velcro hook surface connected to the outer wall of the insulating basin, and a first Velcro surface connected to the base plate;

[0014] The Velcro hook surface cooperates with the first Velcro surface to connect the shielding cover and the outer wall of the insulating basin.

[0015] The Velcro hook surface is provided with a central hole for exposing the pouring hole.

[0016] Further, the quick disassembly assembly further comprises a base;

[0017] The base is arranged on the outer wall of the insulating basin.

[0018] The base is provided with a through hole, which is in communication with the central hole of the Velcro hook surface, for exposing the pouring hole.

[0019] The Velcro hook surface is pressed on the outer wall of the insulating basin through the base.

[0020] Further, the base adopts a pressing plate.

[0021] The pressing plate is provided with a hollow area for exposing the Velcro hook surface to connect the first Velcro surface.

[0022] The pressing plate is fixed on the outer wall of the insulating basin by fasteners.

[0023] Further, when performing partial discharge detection, the insulating basin pouring hole shielding structure further comprises a sensor cooperating with the outer wall of the insulating basin.

[0024] The sensor comprises a sensor shell and a sensor body inserted into the sensor shell.

[0025] One side of the sensor shell is connected with a second Velcro surface.

[0026] The second Velcro surface cooperates with the Velcro hook surface to connect the sensor and the outer wall of the insulating basin.

[0027] One side of the sensor shell is connected with a second shielding ring.

[0028] The second shielding ring is connected to the metal ring of the insulating basin, and the second shielding ring is arranged around the pouring hole.

[0029] The second shielding ring, the metal ring of the insulating basin and the sensor shell constitute a short-circuit fully-enclosed electromagnetic shielding body.

[0030] Further, the second shielding ring is connected with one side of the sensor shell through conductive glue; or the second shielding ring is integrally formed with the sensor shell.

[0031] Further, the first shielding ring is connected with the inner wall of the substrate through conductive glue; or the first shielding ring is integrally formed with the substrate.

[0032] Further, the quick disassembly and assembly component adopts a snap fastener or a buckle.

[0033] Further, the substrate is provided with a side ear.

[0034] Further, the first shielding ring is made of shielding cloth wrapped around conductive cotton.

[0035] Compared with the prior art, the utility model has the following beneficial effects:

[0036] The utility model discloses a kind of insulating basin pouring hole shielding structures of facilitating partial discharge detection, and the shielding structure is connected substrate and insulating basin outer wall by using quick disassembly and assembly component, instead of the mode of traditional screw fastening metal plate;This design greatly simplifies the disassembly and assembly process when patrolling and inspecting, avoids the tedious work of disassembling and assembling fastener one by one, to significantly improve work efficiency, reduce the time and manpower cost required for patrolling and inspecting.Meanwhile, the first shielding ring connected with the inner wall of substrate is connected with insulating basin metal ring, is set around pouring hole, and is jointly constituted with substrate into short-circuiting fully-enclosed electromagnetic shield, to ensure shielding effect, without affecting the work progress and quality of partial discharge detection operation.

[0037] Preferably, in the utility model, magic tape is used as quick disassembly and assembly component, to realize the quick and reliable connection of shielding cover and insulating basin outer wall.The cooperation mode of magic tape hook face and first magic tape pile face is simple and easy to understand, convenient to operate, and easy to replace and maintain.

[0038] Preferably, in the utility model, the setting of base further enhances the connection stability of magic tape and insulating basin outer wall.The through-hole design of base ensures that pouring hole is exposed.

[0039] Preferably, in the utility model, pressing plate is used as base, and is fixed on insulating basin outer wall through fastener, to provide more stable connection mode.The hollow area design of pressing plate makes magic tape hook face fully exposed, to facilitate the connection with first magic tape pile face.

[0040] Preferably, in the utility model, sensor is added in insulating basin pouring hole shielding structure, to realize real-time monitoring of partial discharge signal at pouring hole through the connection of magic tape and insulating basin outer wall.The fully-enclosed electromagnetic shield formed by second shielding ring, insulating basin metal ring and sensor shell ensures the measurement accuracy of sensor.

[0041] Preferably, in the utility model, the connection mode of the second shielding ring and the sensor shell is flexible and various, can be pasted through conductive glue or integrally formed setting, ensure the continuity and integrity of electromagnetic shielding.

[0042] Preferably, in the utility model, the connection mode of the first shielding ring and the substrate is also flexible and various, can be pasted through conductive glue or integrally formed setting, simplify production process, improve the stability and reliability of shielding structure.

[0043] Preferably, in the utility model, the quick dismounting assembly adopts mechanical connection mode such as press stud or buckle, further simplify the installation and dismounting process, improve work efficiency.Simultaneously, the connection mode such as press stud or buckle also provides more stable connection effect.

[0044] Preferably, in the utility model, the side ear arranged on the substrate is convenient for operating personnel to dismount the shielding cover, improves the convenience and safety of operation.

[0045] Preferably, in the utility model, the first shielding ring is made of shielding cloth wrapping conductive cotton, guarantees good electromagnetic shielding effect. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 It is a kind of structure schematic diagram of the insulating basin pouring hole shielding structure of the utility model embodiment for providing convenient partial discharge detection;

[0047] Figure 2 It is the assembly schematic diagram of the quick dismounting assembly of the insulating basin pouring hole shielding structure of the utility model embodiment for providing convenient partial discharge detection at the end of insulating basin;

[0048] Figure 3 It is the structure schematic diagram of the shielding cover of the insulating basin pouring hole shielding structure of the utility model embodiment for providing convenient partial discharge detection, wherein, (a) is front view;(b) is back view;

[0049] Figure 4 It is the schematic diagram of the insulating basin pouring hole shielding structure of the utility model embodiment for providing convenient partial discharge detection and sensor cooperation;

[0050] Figure 5 It is the structure schematic diagram of the sensor of the insulating basin pouring hole shielding structure of the utility model embodiment for providing convenient partial discharge detection and sensor cooperation, wherein, (a) is front view;(b) is back view;

[0051] Figure 6 It is the full-closed electromagnetic shielding body of the insulating basin pouring hole shielding structure of the utility model embodiment for providing convenient partial discharge detection.

[0052] Figure 7 The utility model provides a kind of insulating basin pouring hole shielding structure of the full-enclosed electromagnetic shielding body of convenient local placement detection for the embodiment of the utility model.

[0053] Reference signs:

[0054] 1, insulating basin;2, insulating basin metal ring;3, shielding cover;4, base;5, sensor;6, pouring hole;7, magic hook surface;8, pressing plate;9, fastener;10, substrate;11, first magic tape pile face;12, first shielding ring;13, sensor shell;14, second magic tape pile face;15, second shielding ring;16, conductive glue. DETAILED DESCRIPTION

[0055] In order to make the technical problems solved by the utility model, technical solutions and beneficial effects more clear and obvious, the following specific embodiments are used to further describe the utility model in detail. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0056] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be described clearly and completely in the following by combining with the drawings in the embodiment of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiment of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0057] Therefore, the detailed description of the embodiments of the utility model provided in the drawings below is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0058] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0059] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the 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, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0060] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0061] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] The technical terms involved in this utility model are now explained and described:

[0063] Partial discharge, also known as partial discharge, occurs when a high-voltage structure has partially broken down the insulating medium, but has not yet reached the point of grounding.

[0064] Insulating basin: A basin-shaped conductor support made of insulating material.

[0065] Insulating basin metal ring: A ring-shaped metal structure that surrounds the outer circumference of the insulating basin, used to connect the insulating basin to the flange on the opposite side, and is part of the insulating basin.

[0066] Insulating basin casting hole: A hole made on the metal ring of the insulating basin. During the manufacturing process of the insulating basin, insulating material is poured into the mold through this hole to form the insulating basin.

[0067] Shielding: A structure used to isolate electromagnetic waves.

[0068] Ultra-high frequency (UHF) sensor: A device that collects UHF electromagnetic wave signals.

[0069] Hook and loop fasteners: An adhesive structure made of nylon material with hook and loop sides that fit together.

[0070] In combination with the background mentioned in the background, in order to prevent external interference signals from entering the high-voltage electrical equipment, thereby avoiding causing false alarm of partial discharge monitoring background or affecting fault diagnosis, a shielding structure is installed on the pouring hole of the insulating pot. However, the existing pouring hole shielding usually adopts the screw fastening metal plate method. The number of insulating pots in many power stations is huge, and it is time-consuming and laborious to disassemble and fasten the fasteners one by one during inspection, resulting in low work efficiency and affecting the work progress of partial discharge detection operation. That is, the current engineering usually adopts the method of processing threaded holes on the insulating pot, and fixing the metal plate on the insulating pot with screws to cover the pouring hole of the insulating pot.

[0071] The utility model will be further described in detail below in combination with the drawings:

[0072] Embodiment 1

[0073] In order to solve the above problems, the embodiment provides an insulating pot pouring hole shielding structure convenient for partial discharge detection. The structure adopts a quick disassembly and assembly component, simplifies the disassembly and assembly process during inspection, avoids the tedious work of disassembling and assembling fasteners one by one, and thus significantly improves the work efficiency.

[0074] As shown in Figures 1 to 3 , an insulating pot pouring hole shielding structure convenient for partial discharge detection, comprising a shielding cover 3 and a quick disassembly and assembly component; wherein the shielding cover 3 comprises a base plate 10 and a first shielding ring 12, and the base plate 10 and the first shielding ring 12 are connected by conductive glue 16 or designed as an integral molding.

[0075] As shown in Figure 3 (a) and (b), the shielding cover 3 is connected with the outer wall of the insulating pot 1 through the quick disassembly and assembly component; the first shielding ring 12 is located on the inner wall of the base plate 10 and surrounds the quick disassembly and assembly component, and when the shielding cover 3 is connected with the outer wall of the insulating pot 1, the first shielding ring 12 surrounds the pouring hole 6, realizing full enclosure of the pouring hole 6. Figure 6 As shown in , the first shielding ring 12 is connected with the insulating pot metal ring 2, so that the first shielding ring 12, the insulating pot metal ring 2 and the base plate 10 form a short-circuit full-enclosed electromagnetic shielding body, and the pouring hole 6 is protected therein, which can effectively shield external electromagnetic noise from entering the high-voltage electrical interior, Figure 6 The dotted line in

[0076] When partial discharge detection is needed, the detection personnel do not need to disassemble the bolts and other fasteners on the traditional structure one by one, but directly disassemble the quick disassembly and assembly component to realize the separation of the shielding cover 3 and the insulating pot 1. After the detection is completed, the quick disassembly and assembly component is reassembled to realize the fixation of the shielding cover 3 and the insulating pot 1, greatly simplifying the disassembly and assembly process and improving the overall work efficiency.

[0077] In this embodiment, in combination with Figure 2 and Figure 3 , the quick disassembly assembly adopts a magic tape, that is, a magic tape hook surface 7 and a first magic tape fluff surface 11.

[0078] In this embodiment, the magic tape hook surface 7 with a central hole is adhered to the pouring hole 6 position, and the pouring hole 6 is exposed from the central hole of the magic tape hook surface 7;

[0079] As shown in Figure 2 , in order to further stabilize the magic tape hook surface 7, a hollow base 4 is provided, which adopts a pressing plate 8 pressed on the magic tape hook surface 7. The middle hole area of the pressing plate 8, that is, the pouring hole 6 is exposed through the through hole, and the hollow area exposes the magic tape hook surface 7 sufficient area to ensure that the opposite magic tape hook surface 7 can be pasted firmly. The pressing plate 8 is fixed on the insulating basin 1 by a fastener 9, and the magic tape hook surface 7 is pressed tightly; the fastener 9 can adopt a bolt or other fastening mode.

[0080] In this embodiment, the installation of the pressing plate 8 can increase the stability of the magic tape hook surface 7 on the insulating basin 1, and avoid the magic tape hook surface 7 from falling off.

[0081] The first magic tape fluff surface 11 can be connected to the inner wall of the base plate 10 by an adhesive and located around the first shielding ring 12.

[0082] In this embodiment, the base plate 10 of the shielding cover 3 is made of aluminum, steel or other materials with electrical shielding performance, and its shape is consistent with that of the base 4 to ensure that it is fully attached to the base 4.

[0083] The first magic tape fluff surface 11 with the same shape as the magic tape hook surface 7 is adhered to the bottom surface of the base plate 10, and side ears or other structures can be provided on the base plate 10 to facilitate disassembly.

[0084] The first shielding ring 12 is installed in the hole area of the first magic tape fluff surface 11. The first shielding ring 12 is made of shielding cloth wrapped around conductive cotton, which is a flexible structure. The first shielding ring 12 is connected by integral molding or conductive adhesive bonding to ensure that each part is fully short-circuited. The hollow area formed by the first shielding ring 12 can completely contain the pouring hole 6. The first shielding ring 12 is bonded to the base plate 10 by conductive adhesive. The bonding area of the base plate 10 and the first shielding ring 12 is a bare metal or a surface treatment part with conductivity to ensure that the base plate 10 and the first shielding ring 12 are short-circuited.

[0085] In this embodiment, the quick disassembly assembly can also use snaps or buckles, that is, any fixing part that can quickly realize disassembly.

[0086] Embodiment 2

[0087] In addition to the technical problems in the background art, the prior art also has other defects, for example: when performing partial discharge inspection and full pulse long-time monitoring, the external ultrahigh frequency sensor is usually fixed to the pouring hole of the insulating pot by a fixing band or an elastic band; when the diameter of the pot is large, the fixing band is difficult to reach the opposite side of the pot, and multiple people are required to complete the fixing; especially when the pot is located at a high position, it is more difficult to accurately place the fixing band on the surface of the pot. When the bolt on one side of the pot is blocked by the support plate, the elastic band is not used. The elastic band is prone to insufficient and uneven compression, which can easily lead to interference. The elastic band is prone to aging, loosening and breaking when placed outdoors for a long time. Therefore, the embodiment also provides a sensor matched with the insulating pot 1.

[0088] As shown in Figure 4 , the sensor cooperates with the shielding cover 3 provided in the embodiment 1; when not detecting partial discharge, the pouring hole 6 of the insulating pot is fully shielded by the shielding cover 3; when detecting partial discharge, the shielding cover 3 can be easily replaced by the sensor 5 for detection.

[0089] As shown in Figure 5 , specifically as shown in Figure 5 (a) and (b), the sensor 5 includes a sensor shell 13 and a sensor body inserted in the sensor shell 13, wherein the sensor body is an external ultrahigh frequency sensor, for example, an ultrahigh frequency external partial discharge sensor PDS-US02C of Shanghai Huayun Electrical Technology Co., Ltd., or a portable partial discharge monitoring device PD71 external partial discharge sensor of DMS Company, UK.

[0090] The bottom surface (i.e., one side surface) of the sensor shell 13 is attached with a second magic tape pile surface 14 with an intermediate opening. The second magic tape pile surface 14 is matched and paired with the magic tape hook surface 7 in shape, so as to realize the connection between the sensor 5 and the outer wall of the insulating pot 1.

[0091] The second magic tape pile surface 14 is provided with a second shielding ring 15 in the opening area. The second shielding ring 15 is made of shielding cloth wrapped with conductive cotton, and has a flexible structure. The second shielding ring 15 and the sensor shell 13 are connected by integral molding or conductive glue bonding, so as to ensure that the parts are fully short-circuited. The hollow area surrounded by the second shielding ring 15 can completely contain the pouring hole 6.

[0092] In the embodiment, the second shielding ring 15 is connected to the bottom surface of the sensor shell 13 by the conductive glue 16. The connection area between the bottom surface of the sensor shell 13 and the second shielding ring 15 is a bare metal or a surface treatment part with conductivity, so as to ensure that the sensor shell 13 and the second shielding ring 15 are short-circuited.

[0093] The working principle of the embodiment is as follows:

[0094] When partial discharge detection is needed, the shielding cover 3 can be removed by uncovering the hook surface 7 of the magic tape from the first magic tape pile surface 11, and then the sensor 5 can be directly adhered to the hook surface 7 of the magic tape on the base 4 or directly adhered to the hook surface 7 of the magic tape on the outer wall of the insulating basin, so that the sensor 5 and the insulating basin 1 can be firmly connected.

[0095] When partial discharge detection is needed, the shielding cover 3 can be removed by uncovering the hook surface 7 of the magic tape from the first magic tape pile surface 11, and then the sensor 5 can be directly adhered to the hook surface 7 of the magic tape on the base 4 or directly adhered to the hook surface 7 of the magic tape on the outer wall of the insulating basin, so that the sensor 5 and the insulating basin 1 can be firmly connected, as shown in Figure 7 the second shielding ring 15, the insulating basin metal ring 2 and the sensor shell 13 also form a short-circuit fully enclosed electromagnetic shielding body, that is, the sensor 5 and the insulating basin 1 also form a short-circuit fully enclosed electromagnetic shielding body, and the pouring hole 6 is protected therein, so that external electromagnetic noise can be effectively shielded from entering the high-voltage electrical equipment and the sensor 5.

[0096] Compared with the existing shielding structure, the insulating basin pouring hole shielding structure for partial discharge detection provided by the utility model has the following advantages:

[0097] The shielding structure connects the base plate and the outer wall of the insulating basin by using a quick disassembly and assembly component, instead of the traditional screw fastening metal plate mode; this design greatly simplifies the disassembly and assembly process during inspection, avoids the tedious work of disassembling and assembling fasteners one by one, thereby significantly improving work efficiency and reducing the time and labor cost required for inspection. At the same time, the first shielding ring connected to the inner wall of the base plate is connected to the insulating basin metal ring, surrounds the pouring hole, and is connected to the base plate to form a short-circuit fully enclosed electromagnetic shielding body, thereby ensuring the shielding effect and not affecting the work progress and quality of the partial discharge detection operation.

[0098] The above embodiment is only one of the implementation manners of the technical scheme of the utility model, and the scope of the utility model claimed is not limited to the embodiment, but also includes any changes, substitutions and other implementation manners easily thought of by those skilled in the art within the technical range disclosed by the utility model.

Claims

1. An insulation pot pouring hole shielding structure for facilitating partial discharge detection, characterized by, The shielding cover (3) comprises a base plate (10); The base plate (10) is connected with the outer wall of the insulating basin (1) through a quick disassembly and assembly component; The inner wall of the base plate (10) is connected with a first shielding ring (12); The first shielding ring (12) is connected with the metal ring (2) of the insulating basin, and the first shielding ring (12) is arranged around the pouring hole (6); The first shielding ring (12), the metal ring (2) of the insulating basin and the base plate (10) constitute a short-circuit full-closed electromagnetic shielding body. The quick disassembly and assembly component comprises a Velcro hook surface (7) connected with the outer wall of the insulating basin (1), and a first Velcro fluff surface (11) connected with the base plate (10); 2. The insulating pot casting hole screen structure for facilitating local emission detection according to claim 1, wherein, The Velcro hook surface (7) is matched with the first Velcro fluff surface (11), so that the shielding cover (3) is connected with the outer wall of the insulating basin (1); The Velcro hook surface (7) is provided with a center hole for exposing the pouring hole (6). The quick disassembly and assembly component further comprises a base (4); 3. The insulating pot casting hole screen structure for facilitating local emission detection according to claim 2, characterized in that, The base (4) is arranged on the outer wall of the insulating basin (1); The base (4) is provided with a through hole in the center, the through hole is communicated with the center hole of the Velcro hook surface (7), and the pouring hole (6) is exposed; The Velcro hook surface (7) is pressed on the outer wall of the insulating basin (1) through the base (4). The base (4) adopts a pressing plate (8); 4. The potting hole screen for facilitating the detection of a local discharge according to claim 3, wherein The pressing plate (8) is provided with a hollow region for exposing the Velcro hook surface (7) to connect the first Velcro fluff surface (11); The pressing plate (8) is fixed on the outer wall of the insulating basin (1) through a fastener (9). When partial discharge detection is performed, the insulating basin pouring hole shielding structure further comprises a sensor (5) matched with the outer wall of the insulating basin (1); 5. The potting well screen of claim 2, wherein, The sensor (5) comprises a sensor shell (13) and a sensor body inserted in the sensor shell (13); One side of the sensor shell (13) is connected with a second Velcro fluff surface (14); The second Velcro fluff surface (14) is matched with the Velcro hook surface (7), so that the sensor (5) is connected with the outer wall of the insulating basin (1); One side of the sensor shell (13) is connected with a second shielding ring (15); The second shielding ring (15) is connected with the metal ring (2) of the insulating basin, and the second shielding ring (15) is arranged around the pouring hole (6); The second shielding ring (15), the metal ring (2) of the insulating basin and the sensor shell (13) constitute a short-circuit full-closed electromagnetic shielding body. The second shielding ring (15) is connected with one side of the sensor shell (13) through conductive glue (16); or the second shielding ring (15) and the sensor shell (13) are integrally formed.

6. The insulating pot casting hole screen structure for facilitating local emission detection according to claim 5, wherein, The first shielding ring (12) is connected with the inner wall of the base plate (10) through conductive glue (16); or the first shielding ring (12) and the base plate (10) are integrally formed.

7. The insulating basin casting hole shielding structure for facilitating partial discharge detection according to claim 1, characterized in that, The quick disassembly and assembly component adopts a snap or a buckle.

8. The insulating pot casting hole screen structure for facilitating local emission detection according to claim 1, wherein, ​ 9. The insulating pot casting hole screen structure for facilitating local emission detection according to claim 1, wherein, The substrate (10) is provided with side ears.

10. The insulating pot casting hole screen structure for facilitating local emission detection according to claim 1, wherein, The first shielding ring (12) is made of shielding cloth wrapped conductive cotton.

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