A surge arrester for line overvoltage protection

Abstract

This utility model relates to the technical field of surge arresters, specifically a surge arrester for line overvoltage protection, including a surge arrester mounting base, a surge arrester body, an insulator string, and a surge arrester assembly. The surge arrester body is connected to a fixing point on the surge arrester mounting base, and an insulator string is fixed to an external mounting point on the surge arrester body. An insulator string is also provided at a mounting point on the surge arrester assembly. In this utility model, expanding foam is filled inside the plastic cover. The expanding foam can expand and fill the outside of the ceramic ring, connecting ring, and threaded ring, providing anti-collision protection for the ceramic ring, connecting ring, and threaded ring. When the surge arrester terminal is wrapped with rubber, the expanding foam and the plastic cover shield the silicone rubber jacket, preventing cracking and powdering of the transformer inlet terminal under ultraviolet radiation and ozone. The expanding foam and the plastic cover prevent damage to the transformer inlet terminal of the surge arrester.

Description

Technical Field

[0001] This utility model relates to the technical field of surge arresters, specifically a surge arrester for line overvoltage protection. Background Technology

[0002] A surge arrester is connected in series between a transmission line or equipment and the ground. Through the conductivity of a nonlinear resistive element (such as a zinc oxide varistor), it quickly conducts during overvoltage, diverting energy such as lightning current and switching overvoltage to the ground, thereby limiting the voltage amplitude and protecting the equipment insulation. Its core functions are: preventing damage to lines and equipment from atmospheric overvoltage (lightning strikes); suppressing switching overvoltage (such as transient overvoltage caused by switch opening and closing, fault clearing, etc.); and limiting power frequency transient overvoltage, ensuring the safe operation of lines, transformers, circuit breakers, and other equipment.

[0003] Existing surge arrester terminals are wrapped with rubber. However, the silicone rubber jacket may crack and powder under long-term exposure to ultraviolet light and ozone, leading to damage to the surge arrester terminals. When ceramic tiles are used for wrapping, foreign matter can easily adhere to the tiles, and acid rain corrosion can cause cracking. Utility Model Content

[0004] The purpose of this invention is to provide a surge arrester for line overvoltage protection to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A surge arrester for line overvoltage protection includes a surge arrester mounting base, a surge arrester body, an insulator string, and a surge arrester assembly. The surge arrester body is connected to a fixing point on the surge arrester mounting base. An insulator string is fixed to an external mounting point on the surge arrester body. An insulator string is also provided at a mounting point on the surge arrester assembly. The assembly also includes...

[0007] Anti-collision components are installed on the surge arrester mounting base;

[0008] An anti-oxidation component is mounted on the surge arrester mounting base;

[0009] The surge arrester body has an upper terminal fixedly connected to its top end, a transformer inlet terminal is installed at the mounting point on the upper terminal, a ceramic ring is fitted on the external mounting point of the transformer inlet terminal, and a lower terminal wire is fixedly connected to the bottom end of the surge arrester body.

[0010] The surge arrester for line overvoltage protection as described above: the ceramic ring is slidably installed on the transformer inlet terminal and the upper connection terminal.

[0011] As described above, for line overvoltage protection surge arresters: the lower terminal line is fixedly connected to the surge arrester body via a surge arrester mounting base.

[0012] The surge arrester for line overvoltage protection as described above: the anti-collision component includes a connecting ring fixedly connected to the bottom end of a ceramic ring, a threaded ring installed at the top end of the ceramic ring, and the connecting ring being threadedly fastened inside the ceramic ring.

[0013] The surge arrester for line overvoltage protection as described above: the anti-collision assembly further includes a plastic cover covering the ceramic ring, the inside of which is filled with expanding foam.

[0014] The surge arrester for line overvoltage protection as described above: the anti-oxidation component includes a rubber cover that is wrapped around and installed on the lower terminal line, a vacuum cover is connected to the sealing part of the rubber cover, and a rubber plug is installed at the evacuation part of the vacuum cover.

[0015] The surge arrester for line overvoltage protection as described above: the vacuum cover and the rubber cover are sealed by a rubber plug.

[0016] Compared with the prior art, the beneficial effects of this utility model are: by threading the rubber plug onto the vacuum cover, the expanding foam is filled into the vacuum cover, which can wrap the lower terminal wire and the rubber cover. The vacuum cover, the lower terminal wire and the rubber cover are kept in a vacuum state, which can not only prevent the lower terminal wire of the surge arrester from being damaged, but also prevent foreign objects from adhering and acid rain corrosion when the lower terminal wire is wrapped with ceramic tiles. It can isolate the lower terminal wire from the outside world and prevent the lower terminal wire from cracking.

[0017] The expansion foam is filled into the inside of the plastic cover. The expansion foam can expand and fill the outside of the ceramic ring, connecting ring and threaded ring, which can protect the ceramic ring, connecting ring and threaded ring from collision. When the surge arrester terminal is wrapped with rubber, the expansion foam and the plastic cover can shield the silicone rubber jacket, preventing the transformer inlet terminal from cracking and powdering under the action of ultraviolet rays and ozone. The expansion foam and the plastic cover prevent the surge arrester transformer inlet terminal from being damaged. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the ceramic ring of this utility model;

[0020] Figure 3 This is a schematic diagram of the anti-collision component of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the anti-oxidation component of this utility model.

[0022] In the diagram: 1. Surge arrester mounting base; 2. Surge arrester body; 3. Insulator string; 4. Upper terminal; 5. Ceramic ring; 6. Transformer inlet terminal; 7. Lower terminal wire; 8. Threaded ring; 9. Connecting ring; 10. Plastic cover; 11. Expanding foam; 12. Rubber cover; 13. Vacuum cover; 14. Rubber plug. Detailed Implementation

[0023] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0024] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0025] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0026] Please see Figures 1-4 A surge arrester for line overvoltage protection is proposed, comprising a surge arrester mounting base 1, a surge arrester body 2, an insulator string 3, and a surge arrester assembly.

[0027] The arrester body 2 is connected to the fixing point on the arrester mounting base 1. An insulator string 3 is fixed to the external mounting point on the arrester body 2. An insulator string 3 is provided at the mounting point on the arrester assembly. An anti-collision assembly is installed on the arrester mounting base 1. An anti-oxidation assembly is provided on the arrester mounting base 1.

[0028] The surge arrester body 2 is fixedly installed on the surge arrester mounting base 1, so that the insulator strings 3 are distributed and installed on the surge arrester body 2, and the surge arrester body 2 and the insulator strings 3 can be fixedly connected together.

[0029] The surge arrester body 2 has an upper terminal 4 fixedly connected to its top end, a transformer inlet terminal 6 installed at the mounting point on the upper terminal 4, a ceramic ring 5 installed on the external mounting point of the transformer inlet terminal 6, and a lower terminal 7 fixedly connected to the bottom end of the surge arrester body 2.

[0030] In this embodiment, the upper terminal 4 and the lower terminal 7 are respectively installed on the surge arrester mounting base 1 and the surge arrester body 2. The power transmission line or equipment is connected through the upper terminal 4 and the lower terminal 7. The ceramic rings 5 ​​are distributed and installed on the transformer inlet terminal 6 for insulation protection, which has an insulation effect on the upper terminal 4 and the lower terminal 7, and prevents the upper terminal 4 and the lower terminal 7 from being damaged and leaking electricity.

[0031] Preferably, the ceramic ring 5 is slidably installed on the transformer inlet terminal 6 and the upper connection terminal 4, the ceramic ring 5 is distributed on the upper connection terminal 4 and the transformer inlet terminal 6, and the ceramic ring 5 is stacked on the surge arrester mounting base 1 and the surge arrester body 2.

[0032] Preferably, the lower terminal line 7 is fixedly connected to the surge arrester body 2 via the surge arrester mounting base 1. The lower terminal line 7 is connected and installed on the surge arrester mounting base 1, and the surge arrester mounting base 1 can provide connection protection for the lower terminal line 7. The surge arrester body 2 is fixedly connected to the surge arrester mounting base 1, and the lower terminal line 7 can be fixedly installed on the surge arrester body 2.

[0033] Please refer to Figure 2 and Figure 3 In this embodiment, the anti-collision component includes a connecting ring 9 fixedly connected to the bottom end of the ceramic ring 5, a threaded ring 8 installed at the top end of the ceramic ring 5, and the connecting ring 9 is threadedly fastened inside the ceramic ring 5.

[0034] The connecting ring 9 and the threaded ring 8 are fixedly connected at the upper and lower connection points of the ceramic ring 5. When the ceramic ring 5 is superimposed on the surge arrester mounting base 1 and the surge arrester body 2, the connecting ring 9 and the threaded ring 8 can be threadedly fastened inside the ceramic ring 5. The ceramic ring 5, the connecting ring 9 and the threaded ring 8 are wrapped around the upper connection terminal 4 and the transformer inlet terminal 6.

[0035] Please refer to Figure 2 and Figure 3 In this embodiment, the anti-collision component also includes a plastic cover 10 that covers the outside of the ceramic ring 5, and the inside of the plastic cover 10 is filled with expanding foam 11.

[0036] The plastic cover 10 is fixedly connected to the outside of the ceramic ring 5, the connecting ring 9, and the threaded ring 8, so that the upper terminal 4 and the transformer inlet terminal 6 pass through the inside of the plastic cover 10. When the expansion foam 11 is filled into the inside of the plastic cover 10, the expansion foam 11 can expand and fill the outside of the ceramic ring 5, the connecting ring 9, and the threaded ring 8, which can provide anti-collision wrapping for the outside of the ceramic ring 5, the connecting ring 9, and the threaded ring 8. When the surge arrester terminal is wrapped with rubber, the expansion foam 11 and the plastic cover 10 can shield the silicone rubber jacket, preventing the transformer inlet terminal 6 from cracking or pulverizing under the action of ultraviolet rays and ozone. The expansion foam 11 and the plastic cover 10 prevent damage to the surge arrester transformer inlet terminal 6.

[0037] Please refer to Figure 3 and Figure 4 In this embodiment, the anti-oxidation component includes a rubber cover 12 wrapped around the lower terminal line 7, a vacuum cover 13 connected to the sealing part of the rubber cover 12, and a rubber plug 14 installed at the evacuation part of the vacuum cover 13.

[0038] The rubber cover 12 is wrapped around the lower terminal line 7, and the vacuum cover 13 is covered over the rubber cover 12, so that the rubber plug 14 is threaded through the vacuum cover 13, which can keep the lower terminal line 7 and the rubber cover 12 in a vacuum state and isolate oxygen.

[0039] Preferably, the vacuum cover 13 and the rubber cover 12 are sealed by a rubber plug 14. The user can extract the air from the vacuum cover 13 and tighten the rubber plug 14 onto the vacuum cover 13, so that the expanding foam 11 fills the inside of the vacuum cover 13, which can wrap the lower terminal wire 7 and the rubber cover 12. The vacuum cover 13, the lower terminal wire 7 and the rubber cover 12 maintain a vacuum state, which can not only prevent the lower terminal wire 7 of the surge arrester from being damaged, but also prevent foreign objects from adhering and acid rain corrosion when the lower terminal wire 7 is wrapped with ceramic tiles. It can isolate the lower terminal wire 7 from the outside world and prevent the lower terminal wire 7 from cracking.

[0040] As can be seen from the above, when in use, ceramic rings 5 ​​are distributed and installed on the transformer inlet terminal 6 for insulation protection, which provides insulation for the upper terminal 4 and the lower terminal 7, preventing damage and leakage of the upper terminal 4 and the lower terminal 7. The expansion foam 11 is filled into the vacuum cover 13 to wrap the lower terminal 7 and the rubber cover 12. The vacuum cover 13, the lower terminal 7 and the rubber cover 12 are kept in a vacuum state, which can not only prevent the lower terminal 7 of the surge arrester from being damaged, but also prevent foreign objects from adhering and acid rain corrosion when the lower terminal 7 is wrapped with ceramic tiles, thus isolating the lower terminal 7 from the outside.

[0041] The upper terminal 4 and the transformer inlet terminal 6 pass through the inside of the plastic cover 10. After the expansion foam 11 is filled into the inside of the plastic cover 10, the expansion foam 11 can expand and fill the outside of the ceramic ring 5, the connecting ring 9 and the threaded ring 8, which can protect the outside of the ceramic ring 5, the connecting ring 9 and the threaded ring 8 from collision. When the surge arrester terminal is wrapped with rubber, the expansion foam 11 and the plastic cover 10 can shield the silicone rubber jacket.

[0042] 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.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A surge arrester for line overvoltage protection, comprising a surge arrester mounting base (1), a surge arrester body (2), an insulator string (3), and a surge arrester assembly, wherein the surge arrester body (2) is connected to a fixing point on the surge arrester mounting base (1), an insulator string (3) is fixed to an external mounting point on the surge arrester body (2), and an insulator string (3) is provided at a mounting point on the surge arrester assembly, characterized in that: It also includes settings, The anti-collision component is installed on the surge arrester mounting base (1); An anti-oxidation component is provided on the surge arrester mounting base (1); The surge arrester body (2) has an upper terminal (4) fixedly connected to its top end, a transformer inlet terminal (6) is installed on the upper terminal (4), a ceramic ring (5) is fitted on the external installation of the transformer inlet terminal (6), and a lower terminal wire (7) is fixedly connected to the bottom end of the surge arrester body (2).

2. A surge arrester for line overvoltage protection according to claim 1, characterized in that, The ceramic ring (5) is slidably mounted on the transformer inlet (6) and the upper connector (4).

3. A surge arrester for line overvoltage protection according to claim 1, characterized in that, The lower terminal line (7) is fixedly connected to the surge arrester body (2) through the surge arrester mounting base (1).

4. A surge arrester for line overvoltage protection according to claim 1, characterized in that, The anti-collision assembly includes a connecting ring (9) fixedly connected to the bottom end of the ceramic ring (5), and a threaded ring (8) is installed at the top end of the ceramic ring (5). The connecting ring (9) is threadedly fastened inside the ceramic ring (5).

5. A surge arrester for line overvoltage protection according to claim 4, characterized in that, The anti-collision assembly also includes a plastic cover (10) covering the ceramic ring (5), the plastic cover (10) being filled with expanding foam (11).

6. A surge arrester for line overvoltage protection according to claim 1, characterized in that, The anti-oxidation component includes a rubber cover (12) wrapped around the lower terminal line (7), a vacuum cover (13) connected to the sealing part of the rubber cover (12), and a rubber plug (14) installed at the evacuation part of the vacuum cover (13).

7. A surge arrester for line overvoltage protection according to claim 6, characterized in that, The vacuum shroud (13) and the rubber shroud (12) are sealed by a rubber plug (14).

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