CN215451069U

CN215451069U - Novel 10KV lightning arrester with no energy consumption and low residual voltage

Info

Publication number: CN215451069U
Application number: CN202121684151.5U
Authority: CN
Inventors: 黄建国; 吴海
Original assignee: Hunan Kecheng Technology Co ltd
Current assignee: Hunan Kecheng Technology Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-01-07
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses a novel 10KV lightning arrester without energy consumption and low residual voltage, and relates to the technical field of electrical engineering. This practicality is through setting up discharge gap, under the condition that does not suffer the thunderbolt, the arrester is the state of opening circuit, does not consume the current electric energy of distribution network, and effectual reduction electric wire netting thunder and lightning accident provides the guarantee for lightning protection disaster reduction.

Description

Novel 10KV lightning arrester with no energy consumption and low residual voltage

Technical Field

The utility model belongs to the technical field of electrical engineering, relates to a lightning arrester technology, and particularly relates to a novel 10KV lightning arrester without energy consumption and low residual voltage.

Background

With the popularization of the application of precise microelectronic equipment in the world, lightning overvoltage often poses great threat to the safety of the equipment, high-voltage lightning arresters used in the current market are all made of zinc oxide piezoresistors, and the inherent defect of the zinc oxide piezoresistors is that the residual voltage is high, so that lightning tripping and lightning breaking accidents can easily occur to a line, or electric energy is consumed to the ground for a long time due to the fact that an insulation resistor is reduced due to the fact that electric arcs are generated at the edges of insulators, and under the serious condition, when a transformer is damaged by lightning and is led to a fire accident, the continuous power supply of a power distribution network is seriously influenced.

Therefore, those skilled in the art have provided a novel 10KV lightning arrester with low residual voltage without energy consumption to solve the problems set forth in the above background art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel 10KV lightning arrester with no energy consumption and low residual voltage, so as to solve the problems in the background technology.

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

a novel 10KV lightning arrester without energy consumption and low residual voltage comprises a shell, a first electrode is arranged at the top end inside the shell, the bottom surface of the first electrode is provided with a first piezoresistor, the bottom of the first piezoresistor is connected with a first discharge electrode through a lead, the bottom of the first piezoresistor is also provided with a first insulating block, a plurality of upper slots and a plurality of lower slots are arranged in the first insulating block, a discharge gap is arranged between the upper slot and the lower slot, the first discharge electrode is arranged at one side of the discharge gap, a second discharge electrode is arranged on one side of the discharge gap away from the first discharge electrode, an electromagnet is arranged at the bottom of the first insulating block, a push rod is arranged in the center of the electromagnet, one end of the push rod, which extends out of the electromagnet, is fixedly connected with a push block, the top surface of ejector pad is provided with a plurality of inserted sheets, the one end that the inserted sheet kept away from the ejector pad is inserted in the slot down.

As a still further scheme of the utility model: the electromagnet comprises an insulating shell and a coil, the coil is wound in the insulating shell, a return pin is further arranged inside the electromagnet, the top of the return pin is fixedly connected with a push rod, a return spring is sleeved at one end, located on the electromagnet, of the push rod, and the two ends of the return spring are respectively connected with the insulating shell and the return pin.

As a still further scheme of the utility model: the coil extends to the outside of insulating casing and has first joint and second joint, first joint electric connection has the second electrode, second joint electric connection has the second piezo-resistor.

As a still further scheme of the utility model: and a second insulating block is arranged between the second piezoresistor and the electromagnet, and one surface of the second piezoresistor, which deviates from the second insulating block, is attached to the second electrode.

As a still further scheme of the utility model: the second discharge electrode is electrically connected with the second piezoresistor through a lead.

As a still further scheme of the utility model: the shell and the inserting pieces are made of high-voltage insulating materials.

As a still further scheme of the utility model: the number of the upper slots and the lower slots is 1-8.

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

the lightning arrester can be used in various grounding systems of a power distribution network, the lightning arrester is in an open circuit state without consuming the existing electric energy of the power distribution network by arranging the discharge gap under the condition of no lightning stroke, the first discharge electrode discharges under the condition of high voltage during the lightning stroke, the first discharge electrode is communicated with the second discharge electrode through the discharge gap, the electromagnet forms a closed loop, a magnetic field is formed inside the electromagnet, the push rod is pushed to drive the insulating insertion sheet to block the discharge gap, so that the current is interrupted, the second piezoresistor is led into the bottom surface through the second electrode, the voltage is reduced, the circuit is prevented from being tripped or blown, meanwhile, the magnetic field inside the electromagnet disappears, the insertion sheet returns to the original position, the electric energy is not consumed in the use process, the lightning accidents of the power grid are effectively reduced, and the lightning protection and disaster reduction are guaranteed.

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 novel 10KV lightning arrester without energy consumption and with low residual voltage;

fig. 2 is an overall detail view a of a novel 10KV lightning arrester with no energy consumption and low residual voltage.

In the figure: 1. a housing; 2. a first electrode; 3. a first voltage dependent resistor; 4. a first insulating block; 41. an upper slot; 42. a lower slot; 43. a discharge gap; 44. a first discharge electrode; 5. a second discharge electrode; 6. an electromagnet; 61. a coil; 62. an insulating housing; 7. inserting sheets; 8. a push block; 9. a return pin; 10. a push rod; 11. a second insulating block; 12. a second voltage dependent resistor; 13. a second electrode; 14. a first joint; 15. a second joint; 16. and a return spring.

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): referring to fig. 1-2, a novel 10KV lightning arrester without energy consumption and low residual voltage comprises a housing 1, a first electrode 2, a first varistor 3, a first insulating block 4, an electromagnet 6, a second insulating block 11, a second varistor 12 and a second electrode 13 are sequentially arranged in the housing 1, the first electrode 2 is closely attached to the first varistor 3, a lead is arranged below the first varistor 3 and connected to a first discharge electrode 44 and extends into the first insulating block 4, an upper slot 41 and a lower slot 42 are correspondingly arranged in the first insulating block 4, a discharge gap 43 is formed between the upper slot 41 and the lower slot 42, the first discharge electrode 44 is located at one end of the discharge gap 43, a second discharge electrode 5 is arranged at one end of the discharge gap 43 far from the first discharge electrode 44, the second discharge electrode 5 is communicated with the second varistor 12 through the lead, when a lightning strike occurs, under the condition of high-voltage current, the first discharge electrode 44 starts to discharge, and is communicated with the second discharge electrode 5 through the discharge gap 43 and further conducted to the second piezoresistor 12, under the daily condition, the discharge gap 43 is arranged to enable the two discharge electrodes to be in a disconnected state, the existing power grid energy consumption is not lost, when the power is not conducted, a plurality of inserting pieces 7 are inserted into the lower slot 42, a push block 8 is fixedly connected below the inserting pieces 7, the lower part of the push block 8 is fixedly connected with a push rod 10, the electromagnet 6 positioned below the first insulating block 4 comprises a coil 61 and an insulating shell 62, the coil 61 is uniformly wound in the shell 1, two joints of the coil 61 are respectively connected with the second piezoresistor 12 and the second electrode 13, a return pin 9 is arranged inside the electromagnet 6, the return pin 9 is fixedly connected with the push rod 10, one end of the push rod 10 positioned inside the electromagnet 6 is sleeved with a return spring 16, the two ends of the return spring 16 are respectively connected with the insulating shell 62 and the return pin 9. When lightning strike occurs, the electromagnet 6 forms a closed loop, a magnetic field is formed inside the closed loop, the push rod 10 is pushed to move upwards to drive the insertion piece 7 to be inserted into the upper slot 41, the discharge of the first discharge electrode 44 is blocked, the current of the second piezoresistor 12 is led into the bottom surface through the second electrode 13, the circuit tripping is avoided, meanwhile, after no current passes through the electromagnet 6, the internal magnetic field disappears, the push rod 10 is reset downwards under the action of the return pin 9 and the return spring 16, and the insertion piece 7 is driven to return to the initial position.

Preferably, a second insulating block 11 is arranged between the second piezoresistor 12 and the electromagnet 6, so that voltage leakage of the second piezoresistor 12 is avoided, and one surface of the second piezoresistor 12 departing from the second insulating block 11 is attached to the second electrode 13.

Preferably, the shell 1 and the insert 7 are made of high-voltage insulating materials, and are made of insulating rubber or insulating ceramic materials, so that high-voltage current caused by lightning strike can be blocked.

Preferably, the number of the upper slots 41 and the lower slots 42 is 1-8, so that the discharge current is effectively blocked, the overall shape of the overall lightning arrester is reduced, and the material consumption is saved.

A use method of a novel 10KV lightning arrester without energy consumption and low residual voltage comprises the following steps:

s1, when lightning passes through the lightning arrester, high-voltage current is conducted to the first discharge electrode 44 through the lead after being guided to the first piezoresistor 3 through the first electrode 2;

s2, the first discharge electrode 44 generates discharge after receiving the high voltage current, and the discharge is communicated with the second discharge electrode 5 through the discharge gap 43, and the second discharge electrode 5 guides the current to the second varistor 12;

s3, connecting a first joint 14 and a second joint 15 of the electromagnet 6 with a second electrode 13 and a second piezoresistor 12 respectively to form a closed loop, and under the condition of electrification, generating a magnetic field inside the electromagnet 6 to push the push rod 10 to be pushed outwards;

s4, the push rod 10 drives the push block 8 and the inserting piece 7 to move upwards, the push block and the inserting piece are inserted into the upper slot 41 from the lower slot 42, the discharging gap 43 is blocked, the voltage at two ends of the second piezoresistor 12 disappears at the same time, and the magnetic field in the electromagnet 6 disappears;

and S5, after the pushing force disappears, the return pin 9 and the return spring 16 drive the push rod 10 and the inserting piece 7 to return to the initial state, and one-time work is completed.

The foregoing also illustrates the principles of the present invention.

Compared with the prior art, the lightning arrester can be used in various grounding systems of a power distribution network, the lightning arrester is in an open circuit state under the condition of no lightning stroke by arranging the discharge gap 43, the existing electric energy of the power distribution network is not lost, the first discharge electrode 44 discharges under the condition of high voltage during the lightning stroke, the electromagnet 6 is communicated with the second discharge electrode 5 through the discharge gap 43 to form a closed loop, a magnetic field is formed inside the electromagnet 6, the push rod 10 is pushed to drive the insulating insertion sheet 7 to block the discharge gap 43, so that the current is interrupted, the second piezoresistor 12 is led into the bottom surface through the second electrode 13, the voltage with tragic force is reduced, the circuit is prevented from tripping or burning, the magnetic field inside the electromagnet 6 disappears, the insertion sheet 7 returns to the original position, the electric energy is not consumed in the using process, the lightning accidents of the power network are effectively reduced, and the disaster reduction guarantee is provided.

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. The novel 10KV lightning arrester without energy consumption and low residual voltage comprises a shell (1) and is characterized in that a first electrode (2) is arranged at the top end inside the shell (1), a first piezoresistor (3) is arranged on the bottom surface of the first electrode (2), a first discharge electrode (44) is connected to the bottom of the first piezoresistor (3) through a lead, a first insulating block (4) is further arranged at the bottom of the first piezoresistor (3), a plurality of upper slots (41) and a plurality of lower slots (42) are arranged inside the first insulating block (4), a discharge gap (43) is arranged between the upper slots (41) and the lower slots (42), the first discharge electrode (44) is arranged on one side of the discharge gap (43), a second discharge electrode (5) is arranged on one side, far away from the first discharge electrode (44), of the first insulating block (4) is provided with an electromagnet (6), the novel push rod mechanism is characterized in that a push rod (10) is arranged inside the center of the electromagnet (6), one end of the push rod (10) extending out of the electromagnet (6) is fixedly connected with a push block (8), the top surface of the push block (8) is provided with a plurality of inserting pieces (7), and one end, far away from the push block (8), of each inserting piece (7) is inserted into a lower slot (42).

2. The novel 10KV lightning arrester of no energy consumption and low residual voltage according to claim 1, characterized in that the electromagnet (6) comprises an insulating housing (62) and a coil (61), the coil (61) is wound in the insulating housing (62), a return pin (9) is further arranged inside the electromagnet (6), the top of the return pin (9) is fixedly connected with the push rod (10), one end of the push rod (10) located at the electromagnet (6) is sleeved with a return spring (16), and two ends of the return spring (16) are respectively connected with the insulating housing (62) and the return pin (9).

3. The novel 10KV lightning arrester according to claim 2, characterized in that the coil (61) extends to the outside of the insulating housing (62) to form a first terminal (14) and a second terminal (15), the first terminal (14) is electrically connected to the second electrode (13), and the second terminal (15) is electrically connected to the second varistor (12).

4. The novel 10KV lightning arrester according to claim 3, characterized in that a second insulating block (11) is arranged between the second varistor (12) and the electromagnet (6), and the surface of the second varistor (12) facing away from the second insulating block (11) is attached to the second electrode (13).

5. The novel 10KV lightning arrester as claimed in claim 1, wherein the second discharge electrode (5) is electrically connected to the second varistor (12) via a wire.

6. The novel 10KV lightning arrester as claimed in claim 1, characterized in that the housing (1) and the plug (7) are made of high voltage insulating material.

7. The novel 10KV lightning arrester of claim 1, wherein the number of the upper slots (41) and the lower slots (42) is 1-8.