High-voltage cable partial discharge monitoring device

Abstract

The utility model discloses a high-voltage cable partial discharge monitoring device, which relates to the technical field of cable monitoring and comprises a box assembly, and the box assembly comprises a box body, a cover body and a sealing gasket. The box body is provided with a containing cavity with an opening, the box body is provided with a supporting table arranged around the opening, and the supporting table is provided with a through hole; the sealing gasket comprises a gasket body and an inverted buckle piece arranged on the gasket body, the gasket body is arranged on the supporting table and surrounds the opening, the inverted buckle piece comprises a connecting part connected with the gasket body and an inverted buckle part connected to the connecting part, and the connecting part penetrates through the through hole so that the inverted buckle part can be located on the side, away from the gasket body, of the supporting table and can be connected with the supporting table in a buckled mode; the cover body covers the opening and abuts against the sealing gasket. According to the high-voltage cable partial discharge monitoring device, if the cover body needs to be opened, the sealing gasket is not easy to separate from the supporting table, and the operation of re-installing the sealing gasket is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cable monitoring, in particular to a high-voltage cable partial discharge monitoring device. Background Art

[0002] The high-voltage cable partial discharge monitoring device can monitor the partial discharge of the high-voltage cable system. The high-voltage cable partial discharge monitoring device usually includes a box assembly and electrical components (collector, control chip and power supply, etc.) arranged in the box assembly. Among them, the sealing of the box assembly is crucial to the reliability of the high-voltage cable partial discharge monitoring device.

[0003] In the related art, a sealing gasket is usually added between the box body and the box cover of the box assembly to achieve sealing, wherein the sealing gasket is fixed by the compression of the box body and the box cover. However, if the box cover needs to be opened to maintain the electrical components inside the box assembly, after the box cover is opened, the sealing gasket will lose the compression of the box cover and become loose, and it is easy to move away from the original position. Before closing the cover again, the sealing gasket needs to be reset, which is troublesome to operate. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a high-voltage cable partial discharge monitoring device, which can improve the problem that after the box cover is opened, the sealing gasket loses the pressure of the box cover and is in a loose state, and is easy to be separated from the original position.

[0005] According to some embodiments of the utility model, a high-voltage cable partial discharge monitoring device includes a box assembly, which includes a box body, a cover body and a sealing gasket; the box body is provided with a accommodating cavity with an opening, and the box body has a support platform arranged around the opening, and the support platform is provided with a through hole; the sealing gasket includes a gasket body, and a buckle piece arranged on the gasket body, the gasket body is arranged on the support platform and arranged around the opening, the buckle piece includes a connecting part connected to the gasket body, and an undercut part connected to the connecting part, the connecting part is passed through the through hole so that the undercut part is located on the side of the support platform away from the gasket body and is buckled with the support platform; the cover body covers the opening and is against the sealing gasket.

[0006] The high-voltage cable partial discharge monitoring device according to the embodiment of the utility model has at least the following beneficial effects:

[0007] In the high-voltage cable partial discharge monitoring device of the utility model, after the sealing gasket is installed, the buckle piece is inserted into the through hole and buckled with the side of the support platform away from the pad body, so that the sealing gasket can be prevented from being separated from the support platform before the cover body is assembled. If the cover body needs to be opened later to maintain or replace the electrical components inside the high-voltage cable partial discharge monitoring device, the sealing gasket will not easily fall off the support platform, avoiding the need to reinstall the sealing gasket, and the operation is more convenient.

[0008] According to some embodiments of the present invention, the maximum outer diameter of the undercut portion is greater than the aperture of the through hole, the undercut portion is made of elastic material, and the undercut portion can be compressed to pass through the through hole.

[0009] According to some embodiments of the utility model, the end of the undercut portion away from the through hole is a conical structure, the large diameter end of the conical structure is arranged toward the through hole, the small diameter end of the conical structure is arranged away from the through hole, and the outer diameter of the small diameter end of the conical structure is smaller than the aperture of the through hole.

[0010] According to some embodiments of the utility model, the undercut also includes a plurality of elastic guide strips, one end of each of the elastic guide strips is connected to an edge of one end of the undercut portion close to the through hole, the other end of each of the elastic guide strips is arranged toward the support platform, and the plurality of elastic guide strips are arranged at intervals along the circumference of the undercut portion;

[0011] Wherein, one end of the elastic guide strip away from the undercut portion can be forced to extend into the through hole.

[0012] According to some embodiments of the utility model, the box assembly also includes a fastener, the cover body is provided with a first assembly hole, the sealing gasket is provided with a second assembly hole corresponding to the first assembly hole, the support platform is provided with a third assembly hole corresponding to the second assembly hole, and the fastener is passed through the first assembly hole, the second assembly hole and the third assembly hole to press the cover body on the sealing gasket.

[0013] According to some embodiments of the utility model, the side of the sealing gasket away from the support platform is provided with a first sealing ridge arranged around the opening, and a second sealing ridge arranged around the first sealing ridge, the second assembly hole is located in the area between the first sealing ridge and the second sealing ridge, and the cover body is abutted against the first sealing ridge and the second sealing ridge.

[0014] According to some embodiments of the present invention, the box body includes a plurality of box side panels connected to each other, the support platform is connected to the outer side walls of the box side panels, and the sealing gasket is also positioned and matched with the outer side walls of the box side panels.

[0015] According to some embodiments of the present invention, the cover body is surrounded by cover side plates, and the cover side plates are arranged around a side of the sealing gasket away from the opening.

[0016] According to some embodiments of the present utility model, the box assembly further includes a support leg connected to the box body, and the support leg is a hollow structure.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a structural schematic diagram of a high-voltage cable partial discharge monitoring device according to an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the explosion structure of a high-voltage cable partial discharge monitoring device according to an embodiment of the utility model;

[0021] Figure 3 This is a schematic cross-sectional view of a high-voltage cable partial discharge monitoring device according to an embodiment of the utility model;

[0022] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0023] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0024] Figure 6 The present invention is a partial structural schematic diagram of a high-voltage cable partial discharge monitoring device according to an embodiment of the present invention.

[0025] Figure Number:

[0026] 100, box assembly; 110, box body; 110a, accommodating cavity; 110b, opening; 111, box side plate; 112, support platform; 1121, through hole; 1122, third assembly hole; 113, sealing plate; 120, cover body; 121, cover side plate; 122, first assembly hole; 130, sealing gasket; 131, gasket body; 132, undercut; 1321, connecting part; 1322, undercut part; 13221, conical structure; 1323, elastic guide strip; 133, first sealing convex strip; 134, second sealing convex strip; 135, second assembly hole; 140, fastener; 150, support foot; 151, mounting hole;

[0027] 200. Collector. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1 As shown, a high-voltage cable partial discharge monitoring device according to an embodiment of the present utility model includes a box assembly 100. Figure 1 and Figure 2 The box assembly 100 includes a box body 110 , a cover 120 and a sealing gasket 130 .

[0032] like Figure 2 As shown, the box body 110 is provided with a receiving cavity 110 a having an opening 110 b , and the box body 110 is provided with a supporting platform 112 arranged around the opening 110 b , and the supporting platform 112 is provided with a through hole 1121 .

[0033] Specifically, the box body 110 is a hollow structure having a accommodating cavity 110a, and one side of the box body 110 has an opening 110b; the support platform 112 is arranged around the opening 110b, and the table top of the support platform 112 is arranged parallel to the plane where the opening 110b is located. Of course, there may be a certain error in the parallelism between the table top of the support platform 112 and the plane where the opening 110b is located; the through hole 1121 extends from the table top of the support platform 112 and passes through the support platform 112.

[0034] Combination Figure 1 and Figure 2 More specifically, the box body 110 includes a plurality of box side panels 111 connected to each other, and a sealing plate 113 connected to one end of the plurality of box side panels 111, and an opening 110b is formed at one end of each box side panel 111 away from the sealing plate 113; wherein the support platform 112 is connected to the outer wall of each box side panel 111 and is arranged around the opening 110b.

[0035] Furthermore, the sealing gasket 130 is also positioned and matched with the outer side wall of the box side plate 111 , and the outer side wall of the box side plate 111 can position the sealing gasket 130 , thereby improving the installation accuracy of the sealing gasket 130 .

[0036] Specifically, the support platform 112 is located lower than the end of the box side plate 111 away from the sealing plate 113, and the part of the box side plate 111 that is higher than the support platform 112 can be used as a positioning structure for the sealing gasket 130 to achieve the positioning of the sealing gasket 130. It can be understood that the use of the box side plate 111 to position the sealing gasket 130 can improve the problem of the sealing gasket 130 moving at will.

[0037] Combination Figure 3 and Figure 4 The sealing gasket 130 includes a gasket body 131 and a buckle 132 disposed on the gasket body 131 . The gasket body 131 is disposed on the support platform 112 and around the opening 110 b , and the buckle 132 is passed through the through hole 1121 and buckled with the support platform 112 .

[0038] Specifically, the sealing gasket 130 is an elastic component and can be made of elastic rubber or elastic plastic; the gasket body 131 is arranged on the support platform 112, supported by the support platform 112 and arranged around the opening 110b; the buckle 132 is passed through the through hole 1121 and buckled with the side of the support platform 112 away from the gasket body 131, so that when the sealing gasket 130 is installed, it can prevent the sealing gasket 130 from detaching from the support platform 112.

[0039] Combination Figure 3 and Figure 4The cover 120 covers the opening 110b of the box body 110 and is sealed against the sealing gasket 130. The sealing gasket 130 can seal the gap between the cover 120 and the box body 110, thereby reducing the risk of external pollutants and water vapor entering the interior of the box body 110 and improving the safety of the device.

[0040] It is understandable that in the high-voltage cable partial discharge monitoring device of the present invention, after the sealing gasket 130 is installed, since the buckle 132 is inserted into the through hole 1121 and buckled with the side of the support platform 112 away from the pad body 131, the sealing gasket 130 can be prevented from being separated from the support platform 112 before the cover body 120 is assembled. If it is necessary to open the cover body 120 to maintain or replace the internal electrical components of the high-voltage cable partial discharge monitoring device in the future, the sealing gasket 130 will not easily separate from the support platform 112, avoiding the need to reinstall the sealing gasket 130, and the operation is more convenient.

[0041] Combination Figure 4 and Figure 5 In some embodiments, the buckle member 132 includes a connecting portion 1321 connected to the pad body 131, and an buckle portion 1322 connected to the connecting portion 1321, and the connecting portion 1321 is passed through the through hole 1121 so that the buckle portion 1322 is located on a side of the support platform 112 away from the pad body 131 and buckled with the support platform 112.

[0042] Specifically, the undercut part 132 is connected to one side of the pad body 131. When installing the sealing pad 130, the connecting part 1321 can be first inserted into the through hole 1121, and the undercut part 1322 can pass through the through hole 1121 to reach the side of the support platform 112 away from the pad body 131, and then the pad body 131 can be evenly laid on the support platform 112. After passing through the through hole 1121 and reaching the side of the support platform 112 away from the pad body 131, the undercut part 1322 can be buckled with the support platform 112, thereby reducing the risk of the sealing pad 130 being separated from the support platform 112.

[0043] It is understandable that the maximum outer diameter of the undercut portion 1322 is greater than the aperture of the through hole 1121 , so that when the undercut portion 1322 passes through the through hole 1121 and reaches the side of the support platform 112 away from the pad body 131 , the undercut portion 1322 can undercut the support platform 112 .

[0044] Furthermore, the undercut portion 1322 is made of elastic material, and the undercut portion 1322 can be compressed to pass through the through hole 1121 .

[0045] It can be understood that since the undercut portion 1322 is made of elastic material, during the installation of the sealing gasket 130, after the connecting portion 1321 is aligned with the through hole 1121, the sealing gasket 130 is squeezed with force, so that the undercut portion 1322 can be deformed by the hole wall of the through hole 1121 and pass through the through hole 1121. When the undercut portion 1322 reaches the side of the support platform 112 away from the pad body 131, the undercut portion 1322 restores its original shape. At this time, the maximum outer diameter of the undercut portion 1322 is larger than the aperture of the through hole 1121, and the undercut portion 1322 can undercut the support platform 112.

[0046] Furthermore, the end of the undercut portion 1322 away from the through hole 1121 is a conical structure 13221, the large diameter end of the conical structure 13221 is arranged toward the through hole 1121, and the small diameter end of the conical structure 13221 is arranged away from the through hole 1121, and the outer diameter of the small diameter end of the conical structure 13221 is smaller than the aperture of the through hole 1121.

[0047] It can be understood that during the installation of the sealing gasket 130, after the connecting portion 1321 is aligned with the through hole 1121, the sealing gasket 130 can be squeezed so that the connecting portion 1321 passes through the through hole 1121. During the process of the connecting portion 1321 passing through the through hole 1121, the small diameter end of the conical structure 13221 can easily pass through the through hole 1121 and play a guiding role. Thereafter, when the undercut portion 1322 passes through the through hole 1121, it is more likely to be squeezed by the hole wall of the through hole 1121 and reduce its diameter, thereby improving the convenience of assembly of the sealing gasket 130.

[0048] Of course, it is understandable that since the undercut portion 1322 is made of elastic material, it can shrink in diameter under pressure. Therefore, by pre-pressing the undercut portion 1322 to shrink in diameter, the undercut portion 1322 can pass through the through hole 1121 to achieve the purpose of removing the sealing gasket 130.

[0049] like Figure 5 As shown, further, the undercut 132 also includes a plurality of elastic guide strips 1323, one end of each elastic guide strip 1323 is connected to the edge of one end of the undercut portion 1322 close to the through hole 1121, and the other end is arranged toward the support platform 112, and the plurality of elastic guide strips 1323 are arranged at circumferential intervals along the undercut portion 1322; wherein, the end of the elastic guide strip 1323 away from the undercut portion 1322 can be subjected to force and extend into the through hole 1121.

[0050] It can be understood that during normal use of the high-voltage cable partial discharge monitoring device, the end of each elastic guide strip 1323 away from the undercut portion 1322 is in a scattered state, and the end of the elastic guide strip 1323 away from the undercut portion 1322 is in contact with the side of the support platform 112 away from the sealing gasket 130 without extending into the through hole 1121; when the sealing gasket 130 needs to be removed, the end of the elastic guide strip 1323 away from the undercut portion 1322 can be manually pushed into the through hole 1121, so that in the process of pulling out the undercut 132, the elastic guide strip 1323 plays a guiding role, making the undercut portion 1322 more susceptible to being squeezed by the wall of the through hole 1121 and shrinking in diameter, thereby improving the disassembly efficiency.

[0051] Combination Figure 2 and Figure 4 In some embodiments, the box assembly 100 also includes a fastener 140, the cover body 120 is provided with a first assembly hole 122, the sealing gasket 130 is provided with a second assembly hole 135 corresponding to the first assembly hole 122, the support platform 112 is provided with a third assembly hole 1122 corresponding to the second assembly hole 135, and the fastener 140 is passed through the first assembly hole 122, the second assembly hole 135 and the third assembly hole 1122 to press the cover body 120 on the sealing gasket 130.

[0052] Specifically, the fastener 140 includes a screw and a nut. The screw is inserted into the first assembly hole 122, the second assembly hole 135 and the third assembly hole 1122. Then, the cover body 120 can be pressed against the sealing gasket 130 by means of the nut, thereby achieving the purpose of fixing the cover body 120.

[0053] Furthermore, a first sealing ridge 133 arranged around the opening 110b and a second sealing ridge 134 arranged around the first sealing ridge 133 are provided on one side of the sealing gasket 130 away from the support platform 112. The second assembly hole 135 is located in the area between the first sealing ridge 133 and the second sealing ridge 134. The cover body 120 is in abutment against the first sealing ridge 133 and the second sealing ridge 134.

[0054] It can be understood that the first assembly hole 122, the second assembly hole 135 and the third assembly hole 1122 are arranged relatively to each other, and since the second assembly hole 135 is located in the area between the first sealing ridge 133 and the second sealing ridge 134, if the external liquid extends into the area between the first sealing ridge 133 and the second sealing ridge 134 through the first through hole 1121 and / or the third through hole 1121, the first sealing ridge 133 and the second sealing ridge 134 can block the flow path of the liquid and prevent the liquid from entering the accommodating cavity 110a of the box body 110.

[0055] like Figure 4As shown, in some embodiments, the cover body 120 is surrounded by a cover side plate 121, which is arranged around the side of the sealing gasket 130 away from the opening 110b. The cover side plate 121 can cover the sealing gasket 130 and reduce the risk of the sealing gasket 130 being contaminated by the external environment or the risk of being worn.

[0056] Specifically, the cover side plate 121 is located outside the box side plate 111 , and the sealing gasket 130 is placed between the box side plate 111 and the cover side plate 121 .

[0057] like Figure 1 As shown, in some embodiments, the box assembly 100 further includes a support leg 150 connected to the box body 110. The support leg 150 is a hollow structure, and the hollow support leg 150 can play a role in reducing weight.

[0058] Furthermore, the support leg 150 is provided with a mounting hole 151 , and the high-voltage cable partial discharge monitoring device can be fixed on the wall by means of expansion screws that are inserted into the mounting hole 151 .

[0059] like Figure 6 As shown, it can be understood that the high-voltage cable partial discharge monitoring device also includes electrical components such as a collector 200 arranged in the box assembly 100.

[0060] In the high-voltage cable partial discharge monitoring device of the present invention, after the sealing gasket 130 is installed, the buckle 132 is inserted into the through hole 1121 and buckled with the side of the support platform 112 away from the pad body 131, so that the sealing gasket 130 can be prevented from being separated from the support platform 112 before the cover body 120 is assembled. If the cover body 120 needs to be opened later to maintain or replace the electrical components inside the high-voltage cable partial discharge monitoring device, the sealing gasket 130 will not be easily separated from the support platform 112, avoiding the need to reinstall the sealing gasket 130, and the operation is more convenient.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high voltage cable partial discharge monitoring device, characterized in that: The box assembly comprises a box body, a cover body and a sealing gasket; The box body is provided with a accommodating cavity with an opening, and the box body has a support platform arranged around the opening, and the support platform is provided with a through hole; the sealing gasket includes a gasket body and a buckle piece arranged on the gasket body, the gasket body is arranged on the support platform and arranged around the opening, the buckle piece includes a connecting part connected to the gasket body, and an undercut part connected to the connecting part, the connecting part is passed through the through hole so that the undercut part is located on a side of the support platform away from the gasket body and is buckled with the support platform; the cover body is covered on the opening and abuts against the sealing gasket.

2. The high-voltage cable partial discharge monitoring device according to claim 1 is characterized in that: The maximum outer diameter of the undercut portion is greater than the aperture of the through hole. The undercut portion is made of elastic material. The undercut portion can be compressed to pass through the through hole.

3. The high-voltage cable partial discharge monitoring device according to claim 1, characterized in that: The end of the undercut portion away from the through hole is a conical structure, the large diameter end of the conical structure is arranged toward the through hole, the small diameter end of the conical structure is arranged away from the through hole, and the outer diameter of the small diameter end of the conical structure is smaller than the aperture of the through hole.

4. The high-voltage cable partial discharge monitoring device according to claim 1, characterized in that: The undercut also includes a plurality of elastic guide strips, one end of each of the elastic guide strips is connected to an edge of one end of the undercut portion close to the through hole, the other end of each of the elastic guide strips is arranged toward the support platform, and the plurality of elastic guide strips are arranged at intervals along the circumference of the undercut portion; Wherein, one end of the elastic guide strip away from the undercut portion can be forced to extend into the through hole.

5. The high-voltage cable partial discharge monitoring device according to claim 1, characterized in that: The box assembly also includes a fastener, the cover body is provided with a first assembly hole, the sealing gasket is provided with a second assembly hole corresponding to the first assembly hole, the support platform is provided with a third assembly hole corresponding to the second assembly hole, and the fastener is passed through the first assembly hole, the second assembly hole and the third assembly hole to press the cover body onto the sealing gasket.

6. The high-voltage cable partial discharge monitoring device according to claim 5, characterized in that: A first sealing ridge arranged around the opening and a second sealing ridge arranged around the first sealing ridge are provided on one side of the sealing gasket away from the support platform. The second assembly hole is located in the area between the first sealing ridge and the second sealing ridge, and the cover body is in abutment against the first sealing ridge and the second sealing ridge.

7. The high-voltage cable partial discharge monitoring device according to claim 1, characterized in that: The box body comprises a plurality of box side panels which are interconnected, the support platform is connected to the outer side walls of the box side panels, and the sealing gasket is also positioned and matched with the outer side walls of the box side panels.

8. The high-voltage cable partial discharge monitoring device according to claim 1, characterized in that: The cover body is provided with cover side plates around its periphery, and the cover side plates are arranged around a side of the sealing gasket away from the opening.

9. The high-voltage cable partial discharge monitoring device according to claim 1, characterized in that: The box assembly also includes a support foot connected to the box body, and the support foot is a hollow structure.

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