CN215451070U

CN215451070U - 10KV low residual voltage lightning arrester

Info

Publication number: CN215451070U
Application number: CN202121849771.XU
Authority: CN
Inventors: 黄建国; 吴海
Original assignee: Hunan Kecheng Technology Co ltd
Current assignee: Hunan Kecheng Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-01-07
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses a 10KV low residual voltage lightning arrester which comprises a shell, a first electrode and a second electrode, wherein the shell is wrapped outside the first electrode and the second electrode, the bottom of the first electrode is sequentially connected with a first piezoresistor, a second piezoresistor, a third piezoresistor, a fourth piezoresistor and a fifth piezoresistor, the bottom of the fourth piezoresistor is electrically connected with a first discharge lead, the tail end of the first discharge lead is connected with a first discharge electrode positioned at the bottom of the fifth piezoresistor, the top of the second electrode is electrically connected with a second discharge lead, the tail end of the second discharge lead is connected with a second discharge electrode, the second discharge electrode is fixed at the bottom of the fifth piezoresistor, and a discharge gap is formed between the first discharge electrode and the second discharge electrode. According to the utility model, through the arrangement of the discharge gap, when high-voltage current is not met, the lightning arrester is in a short-circuit state, so that electric energy of a power line cannot be consumed, and the electric energy is saved.

Description

10KV low residual voltage lightning arrester

Technical Field

The utility model belongs to the field of electrical engineering, relates to a high-voltage lightning protection technology, and particularly relates to a 10KV low residual voltage lightning arrester.

Background

The lightning arrester is used for protecting electrical equipment from being damaged by high transient overvoltage during lightning stroke, limiting follow current time and normally limiting follow current amplitude. The lightning arrester is also called as overvoltage protector and overvoltage limiter, in the existing lightning arrester, because a loop is formed with a circuit, when the lightning arrester does not meet the lightning stroke, the electric energy consumption to the ground for a long time can be generated, so that the energy waste is caused, and in the existing lightning arrester, after the lightning stroke discharges, the high voltage is still remained in the lightning arrester, so that the transformer is easily damaged.

To this end, those skilled in the art now provide a 10KV low residual voltage arrester.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a 10KV low residual voltage lightning arrester which greatly reduces the residual voltage of the lightning arrester so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the 10KV low residual voltage lightning arrester comprises a shell, a first electrode and a second electrode, wherein the shell is wrapped outside the first electrode and the second electrode, the bottom of the first electrode is sequentially connected with a first piezoresistor, a second piezoresistor, a third piezoresistor, a fourth piezoresistor and a fifth piezoresistor, the bottom of the fourth piezoresistor is electrically connected with a first discharge wire, the tail end of the first discharge wire is connected with a first discharge electrode positioned at the bottom of the fifth piezoresistor, the top of the second electrode is electrically connected with a second discharge wire, the tail end of the second discharge wire is connected with a second discharge electrode, the second discharge electrode is fixed at the bottom of the fifth piezoresistor, and a discharge gap is formed between the first discharge electrode and the second discharge electrode.

As a still further scheme of the utility model: the bottom of the first discharge electrode is provided with a first insulating block, and the bottom of the first insulating block is connected with the second electrode.

As a still further scheme of the utility model: and a second insulating block for fixing the first discharge electrode and the second discharge electrode is arranged on the periphery of the discharge gap.

As a still further scheme of the utility model: the second insulating block is of an annular structure with a gap in the center.

As a still further scheme of the utility model: the first piezoresistor, the second piezoresistor, the third piezoresistor, the fourth piezoresistor and the fifth piezoresistor are completely the same in shape and size.

As a still further scheme of the utility model: the shell is made of high-voltage insulating materials.

Compared with the prior art, the utility model has the beneficial effects that:

the first discharge wire is arranged at the bottom of the fourth voltage dependent resistor and connected with the first discharge electrode, so that high-voltage current carried by lightning strikes starts to discharge from the first discharge electrode, the lightning arrester is communicated with the second discharge electrode through the discharge gap, a large amount of voltage is discharged to the ground through the second electrode, and meanwhile, the lightning arrester and the fifth voltage dependent resistor form a parallel circuit, so that residual voltage inside the lightning arrester is greatly reduced, the internal voltage is reduced to be lower than 10KV, meanwhile, the lightning arrester is in a short-circuit state when the high-voltage current is not met through the arrangement of the discharge gap, the electric energy of a power line cannot be lost, and the electric energy is saved.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is an overall structure diagram of a 10KV low residual voltage arrester.

In the figure: 1. a housing; 2. a first electrode; 3. a first voltage dependent resistor; 4. a second voltage dependent resistor; 5. a third voltage dependent resistor; 6. a fourth varistor; 7. a fifth varistor; 8. a second electrode; 9. a first insulating block; 10. a second insulating block; 11. a first discharge wire; 12. a second discharge electrode; 13. a first discharge electrode; 14. a discharge gap; 15. a second discharge wire.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): the utility model provides a 10KV low residual voltage arrester, as shown in fig. 1, including casing 1, first electrode 2 second electrode 8, first piezo-resistor 3, second piezo-resistor 4, third piezo-resistor 5, fourth piezo-resistor 6 and fifth piezo-resistor 7, wherein casing 1 parcel is in first electrode 2 second electrode 8, first piezo-resistor 3, second piezo-resistor 4, third piezo-resistor 5, fourth piezo-resistor 6 and fifth piezo-resistor 7 outsidely, connect gradually first piezo-resistor 3, second piezo-resistor 4, third piezo-resistor 5, fourth piezo-resistor 6 and fifth piezo-resistor 7 between first electrode 2 and the second electrode 8.

Preferably, a first discharge wire 11 is electrically connected to the bottom of the fourth varistor 6, a first discharge electrode 13 is connected to the end of the first discharge wire 11, the first discharge electrode 13 is fixed to the top of the first insulating block 9, a second discharge wire 15 is electrically connected to the top of the second electrode 8, a second discharge electrode 12 is connected to the end of the second discharge wire 15, the second discharge electrode 12 is fixed to the bottom of the fifth varistor 7, a discharge gap 14 is formed by a gap between the first discharge electrode 13 and the second discharge electrode 12, and discharge communication is formed when high-voltage lightning strikes.

Preferably, the first insulating block 9 is arranged at the bottom of the first discharge electrode 13, the bottom of the first insulating block 9 is connected with the second electrode 8, the second insulating block 10 for supporting and fixing is arranged between the first discharge electrode 13 and the second discharge electrode 12, the second insulating block 10 is an annular structure with a gap in the center, and the inner gap is the discharge gap 14.

Preferably, in the embodiment, the first piezoresistor 3, the second piezoresistor 4, the third piezoresistor 5, the fourth piezoresistor 6 and the fifth piezoresistor 7 have the same specification and size, and the shell 1 is made of a high-voltage insulating material, so that the overall structure of the lightning arrester is effectively optimized, and the space is saved.

To sum up, the first discharge wire 11 is arranged at the bottom of the fourth varistor 6 and connected with the first discharge electrode 13, so that the high-voltage current carried by the lightning stroke is that the first discharge electrode 13 starts to discharge, the lightning stroke is communicated with the second discharge electrode 12 through the discharge gap 14, a large amount of voltage is discharged to the ground through the second electrode 8, and meanwhile, the lightning stroke and the fifth varistor 7 form a parallel circuit, so that the residual voltage inside the lightning arrester is greatly reduced, the internal voltage is reduced to be below 10KV, and meanwhile, through the arrangement of the discharge gap 14, when the high-voltage current is not met, the lightning arrester is in a short-circuit state, the electric energy of the power line cannot be consumed, and the electric energy is saved.

The working principle of the utility model is as follows: in daily conditions, due to the arrangement of the discharge gap 14, the whole lightning arrester is in a power-off state, electric energy of an original line cannot be lost, when lightning strike occurs, high-voltage current is conducted to the piezoresistors through the first electrode 2 and is conducted to the first discharge electrode 13 through the first discharge wire 11 to discharge, spark breaks through the discharge gap 14, the spark is communicated with the second discharge electrode 12, and the high-voltage current is detected by the second electrode 8.

The utility model is limited only by the claims and the full scope and equivalents thereof, and moreover, the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The foregoing is merely exemplary and illustrative of the present invention, and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. A10 KV low residual voltage arrester comprises a shell (1), a first electrode (2) and a second electrode (8), wherein the shell (1) is wrapped outside the first electrode (2) and the second electrode (8), and is characterized in that the bottom of the first electrode (2) is sequentially connected with a first piezoresistor (3), a second piezoresistor (4), a third piezoresistor (5), a fourth piezoresistor (6) and a fifth piezoresistor (7), the bottom of the fourth piezoresistor (6) is electrically connected with a first discharge lead (11), the tail end of the first discharge lead (11) is connected with a first discharge electrode (13) positioned at the bottom of the fifth piezoresistor (7), the top of the second electrode (8) is electrically connected with a second discharge lead (15), the tail end of the second discharge lead (15) is connected with a second discharge electrode (12), the second discharge electrode (12) is fixed at the bottom of the fifth piezoresistor (7), and a discharge gap (14) is formed between the first discharge electrode (13) and the second discharge electrode (12).

2. A 10KV low residual voltage arrester according to claim 1, characterized in that the bottom of the first discharging electrode (13) is provided with a first insulating block (9), and the bottom of the first insulating block (9) is connected with the second electrode (8).

3. A 10KV low residual voltage arrester according to claim 1, characterized in that the discharge gap (14) is peripherally provided with a second insulating block (10) for fixing the first discharge electrode (13) and the second discharge electrode (12).

4. A 10KV low residual voltage arrester according to claim 3, characterized in that the second insulating block (10) is a ring structure with a gap left at the center.

5. A 10KV low residual voltage arrester according to claim 1, characterized in that the first varistor (3), the second varistor (4), the third varistor (5), the fourth varistor (6) and the fifth varistor (7) are all identical in shape and size.

6. A 10KV low residual voltage arrester according to claim 1, characterized in that the housing (1) is made of high voltage insulating material.