Combined lightning arrester

Abstract

The utility model discloses a combined lightning arrester which comprises a tank body, a lightning arrester core body, a lightning arrester conductor and a basin-type insulator, the tank body is arranged to be of a four-way port structure, the four-way port structure comprises an upper end port, a lower end port, a left side port and a right side port, the upper end port of the tank body is provided with a cover top plate, and the lower end port of the tank body is provided with a fixed bottom plate; a basin-type insulator is arranged at a left side port of the tank body, a sealing plate is arranged at a right side port of the tank body, the lower end of the lightning arrester core body is fixed on the fixed bottom plate, a shielding cover is arranged at the upper part of the lightning arrester core body, the upper end of the lightning arrester core body is connected with a lightning arrester conductor, a combined conductor is arranged above the lightning arrester conductor, and the combined conductor is of a hollow structure; two-time butt joint of the lightning arrester and the GIS or on-site butt joint of the lightning arrester and the GIS and the PT can be achieved, the situation that a butt joint device is additionally arranged on the GIS is avoided, a combined conductor is arranged in a tank body, the size of the GIS is reduced, GIS miniaturization is facilitated, and the occupied area of a project is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning arresters, in particular to a combined lightning arrester. Background Art

[0002] The metal oxide arrester used in the existing GIS (gas insulated switchgear) has a reserved interface that can be connected to the GIS. When the arrester needs to be connected to the GIS twice or to be connected to both the GIS and the PT (voltage transformer), the arrester with the existing structure cannot achieve this function and needs to increase the GIS connection port, which is not conducive to the miniaturization, economy and convenience of installation of GIS, increases the time and workload of GIS on-site installation, and does not take advantage of the rapid delivery of the project.

[0003] Chinese patent application No. 202223524532.4 discloses a 500kV parallel three-column GIS arrester structure, including a mounting base, an external protective tube, a terminal block, a three-column parallel core group, a conductive rod, a pot-type insulator, a shielding cover and a spring contact finger, with only one interface connected to the pot-type insulator and connected to the PT (voltage transformer); it is impossible to achieve two dockings between the arrester and GIS or to dock with both GIS and PT (voltage transformer); similarly, Chinese patent application No. 202223281486.X discloses a 220kV miniaturized GIS tank-type metal oxide arrester structure, including a pot-type insulator, a conductive rod, a tank body, a voltage-equalizing shielding cover, a zinc oxide resistor core and a base plate, which also has the above problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a combined lightning arrester, which can realize the double docking of the lightning arrester with GIS or realize the on-site docking function with GIS and PT respectively, avoid adding docking devices to GIS, and the combined conductor is arranged in the tank body to reduce the volume of GIS, which is conducive to the miniaturization of GIS, reduces the project footprint, shortens the project period, and is conducive to the rapid delivery of the project, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined lightning arrester, comprising a tank body, a lightning arrester core body, a lightning arrester conductor and a pot-type insulator, the tank body is arranged as a four-way structure, namely an upper end opening, a lower end opening, a left side opening and a right side opening, the upper end opening of the tank body is provided with a cover top plate, the lower end opening of the tank body is provided with a fixed bottom plate, the left side opening of the tank body is provided with a pot-type insulator, the right side opening of the tank body is provided with a sealing plate, the lower end of the lightning arrester core body is fixed on the fixed bottom plate, the upper part of the lightning arrester core body is provided with a shielding cover, the upper end of the lightning arrester core body is connected to the lightning arrester conductor, the upper part of the lightning arrester conductor is provided with a combined conductor, the combined conductor is a hollow structure, the combined conductor is provided with three docking ports, the pot-type insulator is fixedly connected to the docking port at the left end of the combined conductor by screws, the upper end of the lightning arrester conductor is inserted into the lower docking port of the combined conductor, the combined conductor inside the lightning arrester is docked with the lightning arrester core body, the pot-type insulator and the PT interface through spring contacts to achieve electrical connectivity.

[0006] Furthermore, an exhaust hole is provided at the center of the upper end of the tank cover top plate, and an exhaust assembly is provided at the exhaust hole. The exhaust assembly includes an exhaust hood, a fixing sleeve and a sealing sheet. The sealing sheet is provided on the inner side of the fixing sleeve, and the upper end of the fixing sleeve is welded and fixed to the exhaust hood.

[0007] Furthermore, the outlet of the exhaust hood faces outward, a side panel is provided at the outlet of the exhaust hood, a gap is left between the side panel and the outlet of the exhaust hood, the exhaust hood is fixedly connected to the tank body by screws, and a sealing ring is provided between the lower end of the fixing sleeve and the tank body.

[0008] Furthermore, a detection device is provided on the outer side of the tank body, and the detection device is connected to the lower end of the arrester core body through a copper soft wire. A self-sealing valve and a density controller are provided on the outer side of the tank body.

[0009] Furthermore, docking ports are respectively arranged at the left and right ends and the lower part of the combined conductor. The docking ports at the right end and the lower part are in the form of plug-in interfaces. The two ends of the combined conductor respectively correspond to the left and right through ports of the tank body. The right end docking port is set as a reserved interface, and an operating port is provided at the lower part of the combined conductor.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. It can realize the double docking of the arrester with GIS or the on-site docking function with GIS and PT respectively, avoiding the need to add docking devices to GIS. The combined conductor is arranged in the tank body to reduce the volume of GIS, which is conducive to the miniaturization of GIS, reducing the project footprint, shortening the project period, and facilitating the rapid delivery of the project.

[0012] 2. When the arrester fails, the internal pressure increases, which can break through the sealing sheet and discharge the gas from the exhaust hood to prevent the occurrence of pulverizing explosion, which is highly safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the exhaust assembly structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the combined conductor of the utility model.

[0016] In the figure: 1 tank body, 2 pot insulator, 3 combined conductor, 4 arrester conductor, 5 shielding cover, 6 arrester core, 7 fixed bottom plate, 8 detection device, 9 self-sealing valve, 10 density controller, 11 sealing plate, 12 exhaust cover, 13 cover top plate, 14 reserved interface, 15 side plate, 16 fixing sleeve, 17 exhaust hole, 18 sealing sheet, 19 sealing ring, 20 operation port. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] See also Figure 1-3The utility model provides a technical solution: a combined lightning arrester, including a tank body 1, a lightning arrester core body 6, a lightning arrester conductor 4 and a pot-type insulator 2. The tank body 1 is set to a four-way structure, which are an upper end through-hole, a lower end through-hole, a left side through-hole and a right side through-hole. The upper end through-hole of the tank body 1 is provided with a cover top plate 13, the lower end through-hole of the tank body 1 is provided with a fixed bottom plate 7, the left side through-hole of the tank body 1 is provided with a pot-type insulator 2, the right side through-hole of the tank body 1 is provided with a sealing plate 11, the right side through-hole of the tank body 1 is an operating port, and the sealing plate 11 through-hole screws are connected to the tank body 1 for easy disassembly, the lower end of the lightning arrester core body 6 is fixed on the fixed bottom plate 7, and the upper part of the lightning arrester core body 6 is provided with a shielding cover 5, which plays an electrical Field shielding effect is beneficial to uniform electric field distribution after docking. The upper end of the arrester core 6 is connected to the arrester conductor 4, and a combined conductor 3 is arranged above the arrester conductor 4. The combined conductor 3 is a hollow structure, and the combined conductor 3 is provided with three docking ports. The basin insulator 2 and the docking port at the left end of the combined conductor 3 are fixedly connected by screws, and the upper end of the arrester conductor 4 is inserted into the lower docking port of the combined conductor 3. The combined conductor 3 inside the arrester and the arrester conductor 4 are hard-connected, which not only realizes electrical connectivity, but also provides mechanical support for the positioning and fixation of the combined conductor 3. The combined conductor 3 inside the arrester is docked with the arrester core 6, the basin insulator 2, and the PT interface through spring contacts to achieve electrical connectivity.

[0019] An exhaust hole 17 is provided at the center of the upper end of the top plate 13 of the tank body 1, and an exhaust assembly is provided at the exhaust hole 17. The exhaust assembly includes an exhaust hood 12, a fixing sleeve 16 and a sealing sheet 18. The sealing sheet 18 is provided on the inner side of the fixing sleeve 16. The sealing sheet 18 is made of plastic, such as a film. When the lightning arrester fails, the internal pressure increases and can break through the sealing sheet 18 to discharge gas from the exhaust hood 12 to prevent a crushing explosion. The upper end of the fixing sleeve 16 is welded and fixed to the exhaust hood 12.

[0020] The outlet of the exhaust hood 12 faces outward, and a side panel 15 is provided at the outlet of the exhaust hood 12. A gap is left between the side panel 15 and the outlet of the exhaust hood 12. The side panel 15 is a thin plate and will deform when subjected to force. The gap between the side panel 15 and the exhaust hood 12 becomes larger to facilitate exhaust. The exhaust hood 12 is fixedly connected to the tank body 1 by screws, and a sealing ring 19 is provided between the lower end of the fixing sleeve 16 and the tank body 1 to play a sealing role and prevent air leakage.

[0021] A detection device 8 is provided on the outer side of the tank body 1 , and the detection device 8 is connected to the lower end of the arrester core 6 through a copper soft wire. A self-sealing valve 9 and a density controller 10 are provided on the outer side of the tank body 1 .

[0022] The docking ports are respectively arranged at the left and right ends and the lower part of the combined conductor 3. The docking ports at the right end and the lower part are in the form of plug-in interfaces. The two ends of the combined conductor 3 correspond to the left and right through ports of the tank body 1 respectively. The right end docking port is set as a reserved interface 14. The reserved interface 14 is used to dock and combine with the pot-type insulator on the GIS, or dock and combine with the pot-type insulator on the PT. An operating port 20 is provided at the lower part of the combined conductor 3, and the operating port 20 is used to facilitate the docking of the combined conductor 3 and the pot-type insulator 2.

[0023] The combined conductor 3 inside the combined arrester is provided with three docking terminals, and the arrester can achieve two docking with GIS or realize on-site combined docking functions with GIS and PT respectively, avoiding the need to increase docking devices on GIS.

[0024] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. A combined lightning arrester, comprising a tank body (1), a lightning arrester core (6), a lightning arrester conductor (4) and a pot-type insulator (2), characterized in that: The tank body (1) is configured as a four-port structure, which comprises an upper port, a lower port, a left port and a right port. The upper port of the tank body (1) is provided with a cover plate (13), the lower port of the tank body (1) is provided with a fixed bottom plate (7), the left port of the tank body (1) is provided with a pot-type insulator (2), and the right port of the tank body (1) is provided with a sealing plate (11). The lower end of the arrester core (6) is fixed on the fixed bottom plate (7), the upper part of the arrester core (6) is provided with a shielding cover (5), the upper end of the arrester core (6) is connected to the arrester conductor (4), the upper part of the arrester conductor (4) is provided with a combined conductor (3), the combined conductor (3) is a hollow structure, the combined conductor (3) is provided with three docking ports, the pot-type insulator (2) is fixedly connected to the docking port at the left end of the combined conductor (3) by screws, and the upper end of the arrester conductor (4) is inserted into the lower docking port of the combined conductor (3).

2. A combined lightning arrester according to claim 1, characterized in that: An exhaust hole (17) is provided at the center of the upper end of the top plate (13) of the tank body (1). An exhaust assembly is provided at the exhaust hole (17). The exhaust assembly comprises an exhaust cover (12), a fixing sleeve (16) and a sealing sheet (18). The sealing sheet (18) is provided on the inner side of the fixing sleeve (16). The upper end of the fixing sleeve (16) is fixed to the exhaust cover (12) by welding.

3. A combined lightning arrester according to claim 1, characterized in that: The outlet of the exhaust hood (12) faces outward, a side plate (15) is provided at the outlet of the exhaust hood (12), a gap is left between the side plate (15) and the outlet of the exhaust hood (12), the exhaust hood (12) and the tank body (1) are fixedly connected by screws, and a sealing ring (19) is provided between the lower end of the fixing sleeve (16) and the tank body (1).

4. A combined lightning arrester according to claim 1, characterized in that: A detection device (8) is provided on the outer side of the tank body (1), and the detection device (8) is connected to the lower end of the arrester core (6) via a copper soft wire. A self-sealing valve (9) and a density controller (10) are provided on the outer side of the tank body (1).

5. A combined lightning arrester according to claim 1, characterized in that: The docking ports are respectively arranged at the left and right ends and the lower part of the combined conductor (3); the docking ports at the right end and the lower part are in the form of plug-in interfaces; the two ends of the combined conductor (3) respectively correspond to the left and right through-ports of the tank body (1); the right end docking port is arranged as a reserved interface (14); and the lower part of the combined conductor (3) is provided with an operation port (20).

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