High-voltage-resistant lightning-protection resistor

Abstract

The utility model relates to a high-voltage-resistant lightning-protection resistor, which belongs to the field of resistors and comprises a winding resistor, a first glaze layer is arranged on the winding resistor, a first insulator is sleeved on the winding resistor, a second glaze layer is arranged on the first insulator, and a second insulator is sleeved on the first insulator. According to the invention, the second glaze layer can protect the first insulator, the aging degree of the first insulator is reduced, the second insulator can protect the first insulator, and the possibility of damage to the first insulator is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the field of resistors, in particular to a high-voltage lightning-resistant resistor. BACKGROUND

[0002] Lightning protection refers to avoiding the harm to human bodies and buildings caused by lightning through certain methods and measures. Lightning is a natural discharge phenomenon. The voltage on an electric network is generally 110KV / 220KV. A lightning-resistant resistor is generally painted or sintered with enamel on the surface of the resistor, and then is assembled by the electric network company, and an insulator is additionally arranged on the surface and the material for arc extinguishing and temperature reduction is filled in the resistor. However, when the lightning-resistant resistor is used for a long time, the insulator and the insulating enamel layer on the surface will be aged, and the resistor will be damaged when lightning strikes. CONTENT OF THE UTILITY MODEL

[0003] In order to improve the above problems, the application provides a high-voltage lightning-resistant resistor.

[0004] The high-voltage lightning-resistant resistor provided by the application adopts the following technical scheme:

[0005] The high-voltage lightning-resistant resistor comprises a wire-wound resistor, a first enamel layer is arranged on the wire-wound resistor, a first insulator is sleeved on the wire-wound resistor, a second enamel layer is arranged on the first insulator, and a second insulator is sleeved on the first insulator.

[0006] By adopting the above technical scheme, the second enamel layer can protect the first insulator and slow down the aging degree of the first insulator, the second insulator can protect the first insulator and reduce the possibility of damage of the first insulator, so that the possibility of damage of the wire-wound resistor is reduced, and the long-term use of the lightning-resistant resistor is facilitated.

[0007] Preferably, the material of the first enamel layer is organic silicon.

[0008] By adopting the above technical scheme, the organic silicon has high heat resistance and can withstand 200-250 DEG C. The organic silicon has excellent weather resistance and still has good impact strength and flexibility at-50 DEG C. The organic silicon has good electrical insulation under high temperature and humid conditions, and the organic silicon has strong chemical corrosion resistance.

[0009] Preferably, the first insulator is a ceramic tube.

[0010] By adopting the above technical scheme, the ceramic tube has high hardness and wear resistance and can withstand a high temperature of up to 1800 DEG C. The ceramic tube has good acid and alkali resistance and corrosion resistance.

[0011] Preferably, a plurality of heat dissipation grooves are arranged on the ceramic tube.

[0012] By adopting the technical scheme, the contact area of the ceramic tube and air is increased by arranging the heat dissipation grooves, thereby increasing the heat dissipation of the ceramic tube.

[0013] Preferably, the material of the second glaze layer is alumina.

[0014] By adopting the technical scheme, alumina has the characteristics of high hardness, high melting point and high boiling point, and has very high chemical stability, so as to reduce the possibility of damage of the first insulator.

[0015] Preferably, the second insulator is a sleeve.

[0016] By adopting the technical scheme, the sleeve can protect the first insulator, thereby reducing the possibility of damage of the first insulator due to external force.

[0017] Preferably, the two ends of the ceramic tube are fixedly connected with connecting pipes.

[0018] By adopting the technical scheme, the connecting pipes can improve the structural strength of the ceramic tube, and can also limit the ceramic tube by limiting the connecting pipes, thereby improving the stability of the ceramic tube.

[0019] Preferably, the two ends of the wire-wound resistor are connected with copper terminals.

[0020] By adopting the technical scheme, the copper terminals can provide electrical connection points, reduce contact resistance, thereby improving current transmission efficiency, and the copper terminals can also play a protective role to prevent damage due to exposure.

[0021] In summary, the present application has at least one of the following beneficial technical effects:

[0022] 1. By arranging the second glaze layer and the second insulator, the second glaze layer can protect the first insulator and slow down the aging of the first insulator, the second insulator can protect the first insulator and reduce the possibility of damage of the first insulator, thereby reducing the possibility of damage of the wire-wound resistor, facilitating long-term use of the lightning arrester;

[0023] 2. By arranging the connecting pipes, the connecting pipes can improve the structural strength of the ceramic tube, and can also limit the ceramic tube by limiting the connecting pipes, thereby improving the stability of the ceramic tube;

[0024] 3. By arranging the copper terminals, the copper terminals can provide electrical connection points, reduce contact resistance, thereby improving current transmission efficiency, and the copper terminals can also play a protective role to prevent damage due to exposure. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1This is a schematic diagram of the overall structure of the high-voltage surge arrester used in the embodiments of this application.

[0026] Figure 2 This is a schematic diagram of the overall structure of the high-voltage surge arrester used in the embodiments of this application.

[0027] Explanation of reference numerals in the attached diagram: 1. Wire-wound resistor; 11. Copper terminal; 2. Ceramic tube; 21. Heat sink; 22. Connecting tube; 3. Sleeve. Detailed Implementation

[0028] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0030] This application discloses a high-voltage surge arrester, such as... Figure 1 As shown, it includes a wire-wound resistor 1, which is coated with a first glaze layer. The first glaze layer is made of silicone. Silicone has strong heat resistance, which can withstand 200-250℃. Silicone has excellent weather resistance, and still has good impact strength and flexibility at -50℃. Silicone has good electrical insulation under high temperature and humid conditions. Silicone has strong chemical corrosion resistance.

[0031] like Figure 1 As shown, copper terminals 11 are fixedly connected to both ends of the wire-wound resistor 1. The copper terminals 11 can provide electrical connection points, reduce contact resistance, and thus improve current transmission efficiency. The copper terminals 11 can also play a protective role, preventing the possibility of damage due to exposure.

[0032] like Figure 1 As shown, a first insulator, a ceramic tube 2, is fitted onto the winding resistor 1. The ceramic tube 2 has several heat dissipation grooves 21. The ceramic tube 2 possesses extremely high hardness and wear resistance, capable of withstanding temperatures up to 1800℃. It also exhibits good acid and alkali resistance and corrosion resistance. Furthermore, the heat dissipation grooves 21 increase the contact area between the ceramic tube 2 and the air, thereby enhancing heat dissipation and protecting the winding resistor 1. A second glaze layer, made of alumina, is coated onto the ceramic tube 2. Alumina is characterized by high hardness, high melting point, and high boiling point, and possesses high chemical stability, making it an excellent insulator.

[0033] As shown in Figure 1 The two ends of the ceramic tube 2 are integrally formed with the connecting tubes 22, which can improve the structural strength of the ceramic tube 2, and can limit the ceramic tube 2 through the limiting of the connecting tubes 22, thereby improving the stability of the ceramic tube 2.

[0034] As shown in 1 and 2, the ceramic tube 2 is sleeved with the second insulator, which is the sleeve 3; the sleeve 3 can protect the ceramic tube 2 and reduce the possibility of damage of the ceramic tube 2 due to external force.

[0035] The implementation principle of the high-voltage lightning resistance of the embodiment of the application is as follows:

[0036] The organic silicon protects the outer surface of the wire-wound resistor 1, the ceramic tube 2 has high hardness and wear resistance, and can protect the wire-wound resistor 1 and reduce the influence of external factors on the wire-wound resistor 1; the aluminum oxide can protect the ceramic tube 2, the sleeve 3 can also protect the ceramic tube 2, and the possibility of damage of the ceramic tube 2 is reduced, thereby reducing the possibility of damage of the wire-wound resistor 1, prolonging the service life of the wire-wound resistor 1.

[0037] The above are preferred embodiments of the application, and are not intended to limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application shall be covered within the protection scope of the application.

Claims

1. A high withstand voltage surge arrester, characterized in that: It includes a wire-wound resistor (1), the wire-wound resistor (1) is provided with a first glaze layer, the wire-wound resistor (1) is fitted with a first insulator, the first insulator is provided with a second glaze layer, and the first insulator is fitted with a second insulator.

2. The high withstand voltage surge arrester according to claim 1, characterized in that: The first glaze layer is made of silicone.

3. A high withstand voltage surge arrester according to claim 1, characterized in that: The first insulator is a ceramic tube (2).

4. A high withstand voltage surge arrester according to claim 3, characterized in that: The ceramic tube (2) has several heat dissipation grooves (21).

5. A high withstand voltage surge arrester according to claim 1, characterized in that: The second glaze layer is made of aluminum oxide.

6. A high withstand voltage surge arrester according to claim 1, characterized in that: The second insulator is a bushing (3).

7. A high withstand voltage surge arrester according to claim 3, characterized in that: Both ends of the ceramic tube (2) are fixedly connected to connecting tubes (22).

8. A high withstand voltage surge arrester according to claim 1, characterized in that: Both ends of the wire-wound resistor (1) are connected to copper terminals (11).

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