Surge arrester base and surge arrester assembly

Abstract

The application belongs to the technical field of lightning arresters, and particularly relates to a lightning arrester base and a lightning arrester assembly. The lightning arrester base comprises a bottom protection seat and an insulating sleeve. The bottom protection seat comprises a connecting seat and an insulating assembly. One end of the connecting seat is provided with a cavity with an open end. The bottom of the lightning arrester is connected with the insulating assembly. The insulating sleeve is arranged between the inner wall of the cavity and the lightning arrester. The lightning arrester base has sufficient insulation when the lightning arrester of 110kV and below voltage levels is tested without disconnection.

Description

Technical Field

[0001] This invention relates to the field of surge arrester technology, and in particular to a surge arrester base and surge arrester assembly. Background Technology

[0002] Surge arresters are mainly used in power plants. Currently, surge arresters with voltage levels above 220kV can be tested without disconnecting the leads during power outages. However, surge arresters with voltage levels of 110kV and below require disconnecting the leads once during power outage tests. This is because 220kV surge arresters consist of two sections, and 500kV surge arresters consist of three sections. Furthermore, surge arresters are non-polarized and can be tested using the reverse voltage application method. However, 110kV surge arresters only have one section. If the reverse voltage application method is used, the insufficient insulation of the base design will cause the surge arrester to discharge to ground before reaching the test voltage. Currently, there is no surge arrester base suitable for non-disconnection testing of surge arresters with voltage levels of 110kV and below. Summary of the Invention

[0003] One object of the present invention is to provide a surge arrester base that has sufficient insulation when conducting non-disconnection tests on surge arresters of voltage levels of 110kV and below.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] Surge arrester base, including:

[0006] The bottom protective base includes a connecting base and an insulating component. The connecting base has a cavity with one end open. The insulating component is located at the bottom of the cavity. The surge arrester is located inside the cavity. The bottom of the surge arrester is connected to the insulating component.

[0007] An insulating sleeve is disposed between the inner wall of the cavity and the surge arrester.

[0008] As an optional solution for the surge arrester base, the insulation assembly includes an insulation base and a baffle, the baffle being disposed above the insulation base, and the surge arrester being fixedly connected to the insulation base via the baffle.

[0009] As an optional solution for the surge arrester base, the surge arrester base also includes a fixing member, which is located at the upper end of the connecting seat and is used to fix the insulating sleeve to the connecting seat.

[0010] As an optional solution for the surge arrester base, the fixing component includes a first connecting part and a second connecting part. The first connecting part is placed on the upper end face of the connecting seat, and the second connecting part is inserted into the cavity. The upper part of the inner wall of the connecting seat is provided with a stepped surface, and a snap-fit ​​part is provided below the stepped surface. A snap-fit ​​arm is connected to the lower end of the second connecting part. The second connecting part abuts against the stepped surface, and the snap-fit ​​arm cooperates with the snap-fit ​​part to fix the insulating sleeve to the connecting seat.

[0011] As an optional solution for the surge arrester base, the snap-fit ​​part includes a sliding groove and a snap-fit ​​slot perpendicular to the sliding groove. The snap-fit ​​slot is located at the bottom end of the sliding groove. The outer wall of the insulating sleeve is provided with a protrusion. The protrusion can slide through the sliding groove to snap into the snap-fit ​​slot. The snap-fit ​​arm cooperates with the sliding groove to snap into the slot, thereby fixing the insulating sleeve to the connecting seat.

[0012] As an alternative to the surge arrester base, the first connecting part has a through hole at its center, the second connecting part is connected to the circumference of the through hole, and the surge arrester passes through the through hole and the second connecting part to connect with the insulating component.

[0013] Another object of the present invention is to provide a surge arrester assembly that uses the surge arrester base described above and is capable of conducting surge arrester tests without disconnection for voltage levels of 110kV and below.

[0014] To achieve this objective, the present invention adopts the following technical solution:

[0015] A surge arrester assembly, comprising the surge arrester, the surge arrester comprising a body and a core disposed inside the body, the surge arrester assembly further comprising the aforementioned surge arrester base, the body disposed in the cavity, and the core fixedly connected to the insulating component.

[0016] As an optional solution for the surge arrester, the surge arrester assembly also includes a surge arrester protective cap, which is located on the top of the surge arrester. A terminal block is provided on the surge arrester protective cap, and the terminal block is connected to the surge arrester through the surge arrester protective cap.

[0017] As an optional solution for the surge arrester, the surge arrester protective cap includes a protective cap cover and a connecting assembly. The top of the protective cap cover is connected to the terminal block, and the connecting assembly is located below the protective cap cover and connected to the surge arrester.

[0018] As an optional solution for the surge arrester, the connection assembly includes a first connector and a second connector. The first connector has a snap-fit ​​groove at the end away from the protective cap plate. The top of the device body snaps into the snap-fit ​​groove, and the core body is connected to the first connector through the second connector.

[0019] Beneficial effects:

[0020] The surge arrester base provided by this invention includes a bottom protective seat and an insulating sleeve. The bottom protective seat includes a connecting seat and an insulating component. The connecting seat has a cavity with one open end. The insulating component is located at the bottom of the cavity. The surge arrester is located inside the cavity. The bottom of the surge arrester is connected to the insulating component, which enables the lower end surface of the surge arrester in contact with the bottom protective seat to have sufficient insulation effect. The insulating sleeve is located between the inner wall of the cavity and the surge arrester, thereby ensuring that the contact surfaces of the surge arrester and the surge arrester base have insulation effect. This ensures that the surge arrester base has sufficient insulation effect when conducting non-disconnection tests on surge arresters of voltage levels of 110kV and below.

[0021] The surge arrester assembly provided by the present invention includes the surge arrester base described above. When conducting surge arrester tests at voltage levels of 110kV and below without disconnection, it has sufficient insulation effect to prevent the surge arrester from discharging to ground before reaching the test voltage during the test. Attached Figure Description

[0022] Figure 1 This is a longitudinal enlarged view of the lightning arrester base and lightning arrester assembly provided by the present invention;

[0023] Figure 2 This is a schematic diagram of the bottom protective seat of the surge arrester base provided by the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the insulating sleeve of the surge arrester base provided by the present invention;

[0025] Figure 4 This is a structural schematic diagram of the fixing component of the surge arrester base provided by the present invention;

[0026] Figure 5 This is a longitudinal sectional view of the surge arrester assembly provided by the present invention;

[0027] Figure 6 This is a longitudinal enlarged view of the surge arrester protective cap of the surge arrester assembly provided by the present invention in conjunction with the surge arrester.

[0028] In the picture:

[0029] 1. Surge arrester base; 2. Surge arrester protective cap; 3. Terminal block; 4. Surge arrester;

[0030] 11. Bottom protective seat; 111. Connecting seat; 112. Mounting seat; 113. Insulating component; 1131. Insulating seat; 1132. Baffle; 114. Stepped surface; 115. Snap-fit ​​part; 1151. Slide groove; 1152. Slot; 12. Insulating sleeve; 121. Protrusion; 13. Fixing member; 131. First connecting part; 132. Second connecting part; 133. Snap-fit ​​arm;

[0031] 21. Protective cap cover; 22. Connecting assembly; 221. First connector; 222. Second connector; 2221. Upper pressure plate; 2222. Upper cover plate; 223. Pressure block;

[0032] 41. Body; 42. Core body. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0037] Example 1:

[0038] like Figures 1 to 5 As shown, this embodiment provides a surge arrester base 1, which is installed on the surge arrester 4 for fixing and installing the surge arrester 4, and for ensuring that the surge arrester 4 has sufficient insulation when conducting non-disconnection tests on surge arresters 4 with voltage levels of 110kV and below. The surge arrester base 1 includes a bottom protective seat 11 and an insulating sleeve 12. The insulating sleeve 12 can be made of silicone material and is in the shape of a hollow cylinder. The bottom protective base 11 includes a connecting base 111 and an insulating component 113. The connecting base 111 has a cavity with one end open. The insulating component 113 is located at the bottom of the cavity. The surge arrester 4 is located inside the cavity. The bottom of the surge arrester 4 is connected to the insulating component 113. The insulating component 113 is made of insulating material, so that the lower end face of the surge arrester 4 in contact with the bottom protective base 11 has sufficient insulation effect. The insulating sleeve 12 is located between the inner wall of the cavity and the surge arrester 4, so that the side wall of the surge arrester 4 in contact with the surge arrester base 1 also has insulation effect, so that the surge arrester base 1 has sufficient insulation effect when conducting non-disconnection tests on surge arresters 4 with voltage levels of 110kV and below.

[0039] See Figures 1 to 4 The surge arrester base 1 also includes a fixing member 13, which is made of metal and is located at the upper end of the connecting seat 111. The fixing member 13 is used to fix the insulating sleeve 12 to the connecting seat 111. The fixing member 13 includes a first connecting part 131 and a second connecting part 132. The first connecting part 131 is disc-shaped and the second connecting part 132 is cylindrical. The first connecting part 131 is placed on the upper end face of the connecting seat 111, and the second connecting part 132 is inserted into the cavity. The upper part of the inner wall of the connecting seat 111 is provided with a stepped surface 114, and a snap-fit ​​part 115 is provided below the stepped surface 114. The lower end of the second connecting part 132 is connected to a snap-fit ​​arm 133. The second connecting part 132 abuts against the stepped surface 114, and the snap-fit ​​arm 133 cooperates with the snap-fit ​​part 115 to fix the insulating sleeve 12 to the bottom protective seat 11.

[0040] Specifically, a through hole is provided in the middle of the first connecting portion 131, and the second connecting portion 132 is connected to the circumference of the through hole. The lightning arrester 4 passes through the through hole and the second connecting portion 132 to be connected to the insulating component 113, so that the bottom surface of the lightning arrester 4 has sufficient insulation. The clamping portion 115 includes a chute 1151 and a clamping groove 1152 perpendicular to the chute 1151. The clamping groove 1152 is provided at the bottom end of the chute 1151. In this embodiment, the chute 1151 and the clamping groove 1152 are arranged in an "L" shape. A convex block 121 is provided on the outer wall of the insulating bushing 12. The convex block 121 can slide through the chute 1151 to the clamping groove 1152 and be clamped with the clamping groove 1152. The clamping arm 133 cooperates with the chute 1151 for clamping to fix the insulating bushing 12 to the connecting seat 111.

[0041] Of course, in other embodiments, the chute 1151 and the clamping groove 1152 may also be arranged in a "丄" shape.

[0042] To ensure that the bottom protection seat 11 has sufficient stability, the bottom protection seat 11 further includes a mounting seat 112. The mounting seat 112 is made of metal and is in a disc shape. The diameter of the mounting seat 112 is larger than the diameter of the connecting seat 111. A plurality of threaded holes are provided on the mounting seat 112. When installing the lightning arrester base 1, the screw is screwed with the threaded hole to install the lightning arrester base 1 at the installation position.

[0043] As Figure 5 shown, this embodiment also provides a lightning arrester assembly. The lightning arrester assembly includes a lightning arrester 4. The lightning arrester 4 further includes a body 41 and a core 42 provided inside the body 41. The lightning arrester assembly further includes the above-mentioned lightning arrester base 1, which can have sufficient insulation effect when performing the non-disconnecting wire test on the lightning arrester 4 with a voltage level of 110 kV and below. The lightning arrester base 1 is fixed to the installation position through the cooperation of the screw and the threaded hole of the mounting seat 112. The lightning arrester 4 is arranged in the cavity of the lightning arrester base 1, and the core 42 is fixedly connected to the insulating component 113. A receiving cavity is provided in the body 41, and the core 42 is arranged in the receiving cavity. The body 41 is made of insulating material and plays an insulating role. The core 42 can provide reliable overvoltage protection for the lightning arrester 4.

[0044] Specifically, in this embodiment, the insulating sleeve 12 is placed inside the cavity of the surge arrester base 1, with the outer wall of the insulating sleeve 12 fitting against the inner wall of the cavity. The diameter of the insulating component 113 is equal to the diameter of the lower end of the surge arrester 4, and the lower end of the insulating sleeve 12 is flush with the lower end of the insulating component 113. Both the insulating component 113 and the surge arrester 4 are located inside the insulating sleeve 12, thereby ensuring sufficient insulation between the side wall of the bottom of the surge arrester 4 and the part in contact with the surge arrester base 1. The fixing member 13 is located at the upper end of the bottom protective seat 11 to fix the insulating sleeve 12 to the bottom protective seat 11. The lower part of the device body 41 is placed inside the insulating sleeve 12, with the outer wall of the device body 41 fitting against the inner wall of the insulating sleeve 12. The lower end of the core 42 passes through the baffle 1132 and is fixedly connected to the insulating seat 1131. The baffle 1132 is made of insulating material, thereby ensuring sufficient insulation for the surge arrester 4 and also serving to fix the surge arrester 4.

[0045] like Figure 6 As shown, in order to fix the terminal block 3 and encapsulate the surge arrester 4, the top of the surge arrester 4 is also provided with a surge arrester protective cap 2. The surge arrester protective cap 2 includes a protective cap cover plate 21 and a connecting component 22. The terminal block 3 is connected to the top of the protective cap cover plate 21. The terminal block 3 is used to connect the lead wire. The connecting component 22 is located below the protective cap cover plate 21 and is connected to the surge arrester 4.

[0046] In this embodiment, the connecting component 22 includes a first connector 221 and a second connector 222. The first connector 221 has a snap-fit ​​groove at one end away from the protective cap 21. The top of the device body 41 is snapped into the snap-fit ​​groove, and the core body 42 is connected to the first connector 221 through the second connector 222.

[0047] Specifically, the connecting component 22 also includes a pressure block 223, which is located inside the snap-fit ​​groove. The second connecting component 222 includes an upper pressure plate 2221 and an upper cover plate 2222. The diameter of the pressure block 223 is the same as the outer diameter of the upper cover plate 2222. The upper cover plate 2222 is placed at the upper end of the core 42, and the upper pressure plate 2221 is placed above the upper cover plate 2222. The outer diameter of the upper cover plate 2222 is equal to the diameter of the receiving cavity. The pressure block 223 presses and fixes the upper cover plate 2222 to the upper end of the core 42 through the upper pressure plate 2221, thereby more firmly fixing the surge arrester protective cap 2 to the top of the surge arrester 4.

[0048] Example 2:

[0049] This embodiment provides a surge arrester base 1, wherein the same or corresponding components as in Embodiment 1 are indicated by the same reference numerals as in Embodiment 1. For simplicity, only the differences between Embodiment 2 and Embodiment 1 are described. The differences are: the diameter of the insulating component 113 is equal to the diameter of the cavity, and the lower end of the insulating sleeve 12 abuts against the upper end face of the insulating component 113, so that the surfaces in contact between the surge arrester 4 and the surge arrester base 1 are insulated, thereby ensuring that the surge arrester base 1 has sufficient insulation effect when conducting non-disconnection tests on surge arresters 4 at voltage levels of 110kV and below.

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A surge arrester base, characterized in that, include: Bottom protective seat (11), the bottom protective seat (11) includes a connecting seat (111) and an insulating component (113). The connecting seat (111) has a cavity with one end open. The insulating component (113) is located at the bottom of the cavity. The surge arrester (4) is located in the cavity. The bottom of the surge arrester (4) is connected to the insulating component (113). An insulating sleeve (12) is disposed between the inner wall of the cavity and the surge arrester (4); The insulation component (113) includes an insulation base (1131) and a baffle (1132). The baffle (1132) is disposed above the insulation base (1131), and the surge arrester (4) is fixedly connected to the insulation base (1131) through the baffle (1132). The surge arrester base also includes a fixing member (13), which is located at the upper end of the connecting seat (111) and is used to fix the insulating sleeve (12) to the connecting seat (111). The fastener (13) includes a first connecting part (131) and a second connecting part (132). The first connecting part (131) is placed on the upper end face of the connecting seat (111), and the second connecting part (132) is inserted into the cavity. The upper part of the inner wall of the connecting seat (111) is provided with a stepped surface (114), and a snap-fit ​​part (115) is provided below the stepped surface (114). The lower end of the second connecting part (132) is connected to a snap-fit ​​arm (133). The second connecting part (132) abuts against the stepped surface (114), and the snap-fit ​​arm (133) cooperates with the snap-fit ​​part (115) to fix the insulating sleeve (12) to the connecting seat (111).

2. The surge arrester base according to claim 1, characterized in that, The snap-fit ​​part (115) includes a sliding groove (1151) and a snap-fit ​​groove (1152) perpendicular to the sliding groove (1151). The snap-fit ​​groove (1152) is located at the bottom end of the sliding groove (1151). The outer wall of the insulating sleeve (12) is provided with a protrusion (121). The protrusion (121) can slide through the sliding groove (1151) to the snap-fit ​​groove (1152) and snap-fit ​​with the snap-fit ​​groove (1152). The snap-fit ​​arm (133) cooperates with the sliding groove (1151) to snap-fit, so as to fix the insulating sleeve (12) to the connecting seat (111).

3. The surge arrester base according to claim 1, characterized in that, The first connecting part (131) has a through hole at its center, and the second connecting part (132) is connected to the circumference of the through hole. The surge arrester (4) passes through the through hole and the second connecting part (132) and is connected to the insulating component (113).

4. A surge arrester assembly, the surge arrester assembly comprising the surge arrester (4), the surge arrester (4) comprising a body (41) and a core (42) disposed inside the body (41), characterized in that, The surge arrester assembly further includes a surge arrester base as described in any one of claims 1-3, wherein the body (41) is disposed in the cavity, and the core (42) is fixedly connected to the insulating assembly (113).

5. The surge arrester assembly according to claim 4, characterized in that, The surge arrester assembly also includes a surge arrester protective cap (2), which is located on the top of the surge arrester (4). A terminal block (3) is provided on the surge arrester protective cap (2), and the terminal block (3) is connected to the surge arrester (4) through the surge arrester protective cap (2).

6. The surge arrester assembly according to claim 5, characterized in that, The surge arrester protective cap (2) includes a protective cap cover (21) and a connecting component (22). The top of the protective cap cover (21) is connected to the terminal block (3), and the connecting component (22) is located below the protective cap cover (21) and connected to the surge arrester (4).

7. The surge arrester assembly according to claim 6, characterized in that, The connecting component (22) includes a first connector (221) and a second connector (222). The first connector (221) has a snap-fit ​​groove at one end away from the protective cap cover (21). The top of the device body (41) is snapped into the snap-fit ​​groove. The core (42) is connected to the first connector (221) through the second connector (222).

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