Non-metal high-voltage switch transport package sealing cover and assembly thereof

Abstract

The utility model discloses a non-metal high-voltage switch transport package sealing cover and an assembly thereof, the sealing cover is made of non-metal insulating materials, the sealing cover comprises a coaming, an end plate, a flange and at least one supporting cylinder, one end of the coaming is connected with the periphery of the end plate, the opening end of the coaming is connected with the inner ring of the flange, the end plate is provided with a through hole for a conductor to pass through, and the supporting cylinder is arranged in the through hole. The open ends of the supporting cylinders are connected with the end plates, the other ends of the supporting cylinders extend into the space defined by the surrounding plates, the supporting cylinders and the through holes are coaxially arranged, the supporting cylinders are used for being connected with and supporting conductors, and air holes are formed in one supporting cylinder. According to the utility model, the condition that metal particles are generated due to friction with the interval and the bus does not exist in the application process, the discharge risk is reduced, the structure strength is high, the condition that an internal conductor or an insulating part is damaged when the cover is dismounted and checked on site does not occur, the device can be circularly and safely used, and the rebuilding is not needed in the reutilization process; the weight is light, and installation and use are convenient.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage switch transport packaging technology, and in particular to a non-metallic high-voltage switch transport packaging cover and its components. Background Technology

[0002] With the development of power technology, GIS (Gas Insulated Switchgear) equipment has been widely used and plays an important role in the power system, ensuring the normal operation of substations. Its operational reliability is closely related to the safety of the entire power grid.

[0003] A typical GIS project consists of several bays and busbars, and is generally transported in sections. These sections and busbars are then connected on-site. To ensure the cleanliness of the product upon arrival, the connection surfaces are sealed before transport. There are generally two types of seals: stamped and welded, both using metal as the main body. Using a stamped seal has the following disadvantages: the seal body is prone to deformation and damage when using a structure with supporting conductors; it requires repeated use after transport, generally necessitating repairs and increasing costs; and the metal base material of the seal body makes it susceptible to metal particles, which, if not properly cleaned, could fall into high-voltage equipment and cause a discharge risk. When a welded structure is used for the cap, there are several disadvantages: it needs to be reused after transportation, and generally requires repair, which increases costs; the base material is metal, which can easily produce metal particles, and if not cleaned properly, these particles can fall into high-voltage equipment and cause discharge; due to the welding process, thin-walled materials cannot be used, and a supporting structure is required, resulting in a thicker cap body, high cost, and heavy weight, making installation and use inconvenient for operators.

[0004] Chinese utility model patent CN202244577U, published on May 30, 2012, discloses a high-voltage switch packaging and transport cover, including a packaging and transport cover body. Intermittent arc-shaped bosses are provided on the outer surface of the packaging and transport cover body, with screw holes at the breaks in these intermittent arc-shaped bosses. Alternatively, an annular boss is provided on the inner side of the intermittent arc-shaped bosses, and this annular boss is concentric with the intermittent arc-shaped bosses. The height of the intermittent arc-shaped bosses is greater than or equal to three times the thickness of the packaging and transport cover body, and the width of the intermittent arc-shaped bosses is greater than or equal to the diameter of the screw holes. The height of the annular boss is greater than or equal to three times the thickness of the packaging and transport cover body, and the width of the annular boss is greater than or equal to the diameter of the screw holes. However, this solution is suitable for transport structures without support fixtures. When using a structure with supporting conductors, the cover plate is prone to deformation and damage. It needs to be reused after transportation and generally requires repair, which increases costs. In addition, this solution is made of metal materials, which can easily produce metal particles. If not cleaned properly, these particles may fall into high-voltage equipment and cause discharge risks.

[0005] Therefore, it is necessary to design a non-metallic sealing cap that eliminates the risk of metal particles falling into the air chamber, has high strength, can ensure transportation under various working conditions, and can be reused. Utility Model Content

[0006] The purpose of this utility model is to solve the problem of discharge risk caused by metal particles generated during transportation due to friction between the seals or busbars. To this end, this utility model provides a non-metallic high-voltage switch transport packaging seal and its components. The seal is made of non-metallic material, and the structural design of the seal has high strength, which can replace the existing metal seals.

[0007] The technical solution of this utility model is as follows:

[0008] A non-metallic high-voltage switch transport packaging cover is provided. The cover is made of non-metallic insulating material and includes a surrounding plate, an end plate, a flange, and at least one support cylinder. One end of the surrounding plate is connected to the periphery of the end plate, and the open end of the surrounding plate is connected to the inner ring of the flange. The end plate is provided with a through hole for a conductor to pass through. The open end of the support cylinder is connected to the end plate, and the other end of the support cylinder extends into the space enclosed by the surrounding plate. The support cylinder is coaxially arranged with the through hole and is used to connect and support the conductor. One of the support cylinders is provided with an air hole.

[0009] As an alternative, the end of the enclosure connecting to the end plate gradually narrows relative to the other end; and / or, the enclosure is provided with a plurality of first reinforcing ribs, the first reinforcing ribs extending from one end of the enclosure near the end plate to the other end; and / or, the enclosure is provided with annular second reinforcing ribs in the circumferential direction.

[0010] As an alternative, the end plate is provided with three through holes, which are evenly arranged around the center of the end plate; and / or, the end plate is provided with a plurality of third reinforcing ribs extending from the central region to the edge and a plurality of fourth reinforcing ribs arranged around their respective central regions, the plurality of fourth reinforcing ribs being spaced apart from the center to the edge of the end plate, and the third reinforcing ribs and the fourth reinforcing ribs being provided on at least one side of the end plate.

[0011] As an alternative, the open end of the support cylinder protrudes relative to the surface of the end plate; and / or, there are three support cylinders, each corresponding to one of the through holes; and / or, a fifth reinforcing rib is provided between the support cylinder and the inner surface of the enclosure plate; and / or, a sixth reinforcing rib connects any two support cylinders.

[0012] As an alternative, the flange has several rings of seventh reinforcing ribs on the side facing away from the enclosure. The seventh reinforcing ribs in the same ring are evenly spaced, and the seventh reinforcing ribs closer to the outer ring have larger lengths and widths.

[0013] As an alternative, the flange is provided with a number of connection holes evenly distributed, with one connection hole provided every three of the seventh reinforcing ribs in the outermost ring.

[0014] As an alternative, the flange and the enclosure form an annular sealing groove at their connection, and the sealing groove is located on the outside of the enclosure.

[0015] As an alternative, the cap may be formed by machining, injection molding, compression molding, welding, or casting; the cap may be made of plastic.

[0016] A high-voltage switch packaging and transport sealing assembly includes a wear-resistant ring and a sealing cap as described above. The wear-resistant ring is disposed on the inner side of the support cylinder and is used to fix the conductor on the support cylinder.

[0017] As an alternative, the cover assembly further includes a sealing ring disposed in a sealing groove at the connection between the flange and the enclosure, the sealing groove being located on the outside of the enclosure.

[0018] This utility model has at least the following beneficial effects:

[0019] In this invention, the non-metallic high-voltage switch transport packaging cover and its components are made of non-metallic insulating material. The two ends of the enclosure are connected to end plates and flanges, forming a shape with one end sealed and the other open. The end plate has a through hole for the conductor to pass through. The open end of the support cylinder is connected to the end plate, and the other end of the support cylinder extends into the space enclosed by the enclosure. The support cylinder is coaxially arranged with the through hole and is used to connect and support the conductor. One support cylinder has an air hole. Because the cover is made of non-metallic material, there are no metal particles generated during transportation due to friction with the shell and conductor. Therefore, after removing the packaging and connecting the various compartments and busbars, no metal particles remain inside the shell, reducing the risk of discharge. Furthermore, although the cover is made of non-metallic material, the convex structure formed by the flange, enclosure, and end plate has high structural strength, capable of supporting the conductor weight, withstanding the impact during transportation, and meeting the strength requirements of vacuuming. This prevents damage to the internal conductors or insulation components during on-site inspection. Therefore, this invention not only replaces metal plate-shaped packaging covers but also allows for safe and reusable recycling without the need for repairs, further reducing costs.

[0020] The cap is made of inexpensive and lightweight plastic, making it easy to install and use. It ensures that the conductor support is not damaged during transportation of high-voltage products, and that the interior remains dry and clean upon arrival at the construction site. Furthermore, it avoids the difficulty of installation when the cap is positioned high due to its weight. Because this invention is widely used in high-voltage equipment, and the individual product is inexpensive, it significantly contributes to controlling overall costs. Attached Figure Description

[0021] The technical features and advantages of this utility model can be more fully understood by taking into account the accompanying drawings and the following detailed description.

[0022] Figure 1 This is a structural schematic diagram from one perspective of Embodiment 1 of this utility model.

[0023] Figure 2 This is a structural schematic diagram from another perspective of Embodiment 1 of this utility model.

[0024] Figure 3 This is a schematic diagram of the application state of Embodiment 1 of this utility model.

[0025] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0026] Figure label:

[0027] 100. Cover; 1. Enclosure; 11. First reinforcing rib; 12. Second reinforcing rib; 2. End plate; 21. Through hole; 22. Third reinforcing rib; 23. Fourth reinforcing rib; 3. Flange; 31. Connection hole; 32. Seventh reinforcing rib; 4. Support cylinder; 41. Air hole; 42. Fifth reinforcing rib; 43. Sixth reinforcing rib; 5. Sealing groove; 6. Wear-resistant ring; 7. Conductor. Detailed Implementation

[0028] Unless otherwise defined, the technical or scientific terms used in this specification and claims shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0029] Example 1

[0030] refer to Figure 1-3This embodiment provides a non-metallic high-voltage switch transport packaging cover. The cover 100 is made of non-metallic insulating material and includes a surrounding plate 1, an end plate 2, a flange 3, and at least one support cylinder 4. The two ends of the surrounding plate 1 are connected to the end plate 2 and the flange 3, respectively, and the three together form a shape with one end sealed and the other end open. One end of the surrounding plate 1 is connected to the periphery of the end plate 2 in a sealed state ("sealed state" is interpreted broadly, including the end plate 2 having holes). The open end of the surrounding plate 1 is connected to the inner ring of the flange 3. The end plate 2 is provided with a through hole 21 for conductors to pass through. The open end of the support cylinder 4 is connected to the end plate 2, and the other end of the support cylinder 4 extends into the space enclosed by the surrounding plate 1. The support cylinder 4 is coaxially arranged with the through hole 21. The support cylinder 4 is used to connect and support conductors, and one support cylinder 4 is provided with an air hole 41.

[0031] In application, the cover 100 is connected to the end of the tubular shell of the packaged object. When a conductor is placed inside the shell, the cover 100 connects to the conductor for positioning. Specifically, the flange 3 is connected to the shell by bolts or other fasteners. The enclosure 1 extends towards the inside of the shell. The end of the conductor is inserted into the support cylinder 4 for positioning. After both ends of the shell are connected to the cover 100, a vacuum is drawn using the vent 41 to keep the interior dry and clean. Because the cover 100 is made of non-metallic material, there are no metal particles generated during transportation due to friction with the shell and conductor. Therefore, after removing the packaging and connecting the various compartments and busbars, no metal particles remain inside the shell, reducing the risk of discharge. At the same time, although the cover 100 is made of non-metallic material, the structural relationship formed by the flange 3, enclosure 1, and end plate 2 has high structural strength. It can not only replace metal plate-shaped packaging covers but also be used safely and repeatedly without the need for repairs, further reducing costs.

[0032] In this embodiment, the force exerted by the conductor on the end plate 2 is distributed to the surrounding plate 1, which ensures the rigidity and strength of the cover 100. The surrounding plate 1 adopts a four-sided enclosed structure, and its inner diameter gradually narrows from one end connected to the end plate 2 relative to the other end, facilitating installation. Several first reinforcing ribs 11 are provided on the surrounding plate 1. The first reinforcing ribs 11 are strip-shaped, extending from one end of the surrounding plate 1 near the end plate 2 to the other end. In this embodiment, there are dozens of first reinforcing ribs 11; the number may vary in other embodiments. A ring-shaped second reinforcing rib 12 is provided around the perimeter of the surrounding plate 1. In this embodiment, two second reinforcing ribs 12 are spaced apart; in other embodiments, providing one or more second reinforcing ribs 12 is also within the scope of protection of this utility model. In this embodiment, dozens of first reinforcing ribs 11 and two second reinforcing ribs 12 are simultaneously provided, forming an intersecting relationship, which significantly improves the strength of the cover 100. In other embodiments, only one of the first reinforcing ribs 11 and the second reinforcing rib 12 may be provided.

[0033] In this embodiment, the end plate 2 is provided with three through holes 21, which are evenly arranged around the center of the end plate 2. In other embodiments, the number and arrangement of the through holes 21 may be different. It should be noted that providing three through holes 21 can improve the compatibility of the cover 100. The cover 100 of this embodiment can be applied even when one or two conductors are placed inside the housing during transportation. In this embodiment, the end plate 2 is provided with several third reinforcing ribs 22 extending from the central region to the edge and several fourth reinforcing ribs 23 surrounding the central region. The multiple fourth reinforcing ribs 23 are spaced apart from the center to the edge of the end plate 2. The third reinforcing ribs 22 and the fourth reinforcing ribs 23 form an intersecting relationship, which improves the structural strength of the end plate 2. In this embodiment, the areas on both sides of the end plate 2 that avoid the through holes 21 are provided with third reinforcing ribs 22 and fourth reinforcing ribs 23. In other embodiments, the scheme of providing third reinforcing ribs 22 and / or fourth reinforcing ribs 23 on one side of the end plate 2 is also within the protection scope of this utility model.

[0034] In this embodiment, the open end of the support cylinder 4 extends a certain distance from the surface of the end plate 2, which can disperse the force of the conductor, reduce the stress on the end plate 2 at the edge of the through hole 21, and improve the service life of the cover 100. In this embodiment, there are three support cylinders 4, each corresponding to one of the through holes 21, which can accommodate one, two, or three conductors inside the housing. In other embodiments, the number of support cylinders 4 can be adjusted according to the number of through holes 21. In this embodiment, a fifth reinforcing rib 42 is provided between the support cylinder 4 and the inner surface of the surrounding plate 1 to disperse the force of the conductor onto the surrounding plate 1, while ensuring the coaxiality of the support cylinder 4 and the through hole 21 for smooth conductor connection. In this embodiment, a sixth reinforcing rib 43 is connected between any two support cylinders 4, and the connection between each sixth reinforcing rib 43 and the outer surface of the support cylinder 4 further improves the structural strength of the cover 100.

[0035] In this embodiment, the side of the flange 3 facing away from the enclosure 1 is provided with several rings of seventh reinforcing ribs 32. The seventh reinforcing ribs 32 in the same ring are evenly distributed, and the seventh reinforcing ribs 32 closer to the outer ring have larger lengths and widths, further improving the structural strength of the cover 100. Figure 2 As shown, in this embodiment, the flange 3 is evenly distributed with several connecting holes 31. The connecting holes 31 are threaded holes. In the outermost ring, a connecting hole 31 is provided every three seventh reinforcing ribs 32.

[0036] In this embodiment, an annular sealing groove 5 is formed at the connection between the flange 3 and the surrounding plate 1. The sealing groove 5 is recessed relative to the surface of the flange 3 and is located on the outside of the surrounding plate 1.

[0037] In this embodiment, the cap 100 uses a plastic support, which is lighter, cheaper, and easier to install and use. Molding methods include, but are not limited to, machining, injection molding, compression molding, welding, and casting.

[0038] like Figure 3 As shown, this embodiment also provides a high-voltage switch packaging and transport sealing cap assembly, including a wear-resistant ring 6 and a sealing ring as described above. The wear-resistant ring 6 is disposed on the inner side of the support cylinder 4 and is used to position the conductor on the support cylinder 4. For ease of understanding, Figure 3 A portion of the support cylinder 4 was cut open in area A to allow observation of the internal wear-resistant ring 6. The wear-resistant ring 6 is fixedly or rotatably connected to the support cylinder 4. Similarly, the wear-resistant ring 6 is fixedly or rotatably connected to the conductor. The wear-resistant ring 6 prevents direct friction between the conductor and the support cylinder 4, thus avoiding damage to the cap and allowing for a greater number of cap reuses. A sealing groove 5 is provided at the connection between the flange 3 and the enclosure plate 1, located on the outside of the enclosure plate 1. The sealing groove 5 is positioned within the sealing groove 1 to contact the mating surface of the shell, ensuring airtightness inside the shell after the cap 100 is connected to both ends.

[0039] In application, first install the wear-resistant ring 6 into the support cylinder 4 of the cover 100, install the sealing ring into the sealing groove 5, and then install the cover assembly onto the mating surface of the housing.

[0040] Example 2

[0041] like Figure 4 As shown, this embodiment provides a high-voltage switch packaging and transportation cover and its components. The difference from the first embodiment is that the cover 100 in this embodiment does not have a first reinforcing rib 11 and a second reinforcing rib 12 on the surrounding plate 1. The other parts of this embodiment are the same as those in the first embodiment, and will not be described again here.

[0042] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A non-metallic high-voltage switch transport packaging cover, characterized in that, The cover is made of non-metallic insulating material. The cover includes a surrounding plate, an end plate, a flange, and at least one support cylinder. One end of the surrounding plate is connected to the periphery of the end plate, and the open end of the surrounding plate is connected to the inner ring of the flange. The end plate is provided with a through hole for the conductor to pass through. The open end of the support cylinder is connected to the end plate, and the other end of the support cylinder extends into the space enclosed by the surrounding plate. The support cylinder is coaxially arranged with the through hole. The support cylinder is used to connect and support the conductor, and one of the support cylinders is provided with an air hole.

2. The non-metallic high-voltage switch transport packaging cover according to claim 1, characterized in that, The end of the enclosure plate that connects to the end plate gradually narrows relative to the other end; and / or, the enclosure plate is provided with a plurality of first reinforcing ribs, the first reinforcing ribs extending from one end of the enclosure plate near the end plate to the other end; and / or, the enclosure plate is provided with annular second reinforcing ribs in the circumferential direction.

3. The non-metallic high-voltage switch transport packaging cover according to claim 1, characterized in that, The end plate is provided with three through holes, which are evenly arranged around the center of the end plate; and / or, the end plate is provided with a plurality of third reinforcing ribs extending from the central region to the edge and a plurality of fourth reinforcing ribs arranged around their respective central regions, the plurality of fourth reinforcing ribs being spaced apart from the center of the end plate to the edge, and the third reinforcing ribs and the fourth reinforcing ribs being provided on at least one side of the end plate.

4. The non-metallic high-voltage switch transport packaging cover according to claim 1, characterized in that, The open end of the support cylinder protrudes relative to the surface of the end plate; and / or, there are three support cylinders, each corresponding to one of the through holes; and / or, a fifth reinforcing rib is provided between the support cylinder and the inner surface of the enclosure plate; and / or, a sixth reinforcing rib connects any two support cylinders.

5. The non-metallic high-voltage switch transport packaging cover according to claim 1, characterized in that, The flange has several rings of seventh reinforcing ribs on the side facing away from the enclosure. The seventh reinforcing ribs in the same ring are evenly spaced, and the seventh reinforcing ribs closer to the outer ring are longer and wider.

6. The non-metallic high-voltage switch transport packaging cover according to claim 5, characterized in that, The flange has several connection holes evenly distributed on it. In the outermost ring, one connection hole is provided every three of the seventh reinforcing ribs.

7. The non-metallic high-voltage switch transport packaging cover according to any one of claims 1-6, characterized in that, The flange and the enclosure plate form an annular sealing groove at their connection, and the sealing groove is located on the outside of the enclosure plate.

8. The non-metallic high-voltage switch transport packaging cover according to any one of claims 1-6, characterized in that, The cap is formed by machining, injection molding, compression molding, welding or casting; the cap is made of plastic.

9. A high-voltage switch packaging and transport sealing assembly, characterized in that, It includes a wear-resistant ring and a cap as described in any one of claims 1-7, wherein the wear-resistant ring is disposed on the inner side of the support cylinder and is used to fix the conductor on the support cylinder.

10. The high-voltage switch packaging and transport sealing assembly according to claim 9, characterized in that, The cover assembly also includes a sealing ring disposed in a sealing groove at the connection between the flange and the enclosure, the sealing groove being located on the outside of the enclosure.

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