CN211062675U

CN211062675U - Special surge protector of photovoltaic

Info

Publication number: CN211062675U
Application number: CN201921010586.4U
Authority: CN
Inventors: 申文斌
Original assignee: Suzhou Huaxinrui Power Technology Co ltd
Current assignee: Suzhou Huaxinrui Power Technology Co ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-07-21
Anticipated expiration: 2029-07-01

Abstract

The utility model relates to a protector field discloses a special surge protector of photovoltaic. The protector comprises a protector body, a piezoresistor, an elastic sheet separating piece and an arc shielding mechanism. The protector body is internally provided with a piezoresistor, and the piezoresistor is connected with the elastic piece separating piece through fusible metal welding. The arc shielding mechanism is installed on the protector body and comprises an electromagnet, a permanent magnet, a rotating rod, a sliding block and an arc shielding baffle plate. The utility model discloses an adopt arc-shielding mechanism, when the protector is tripped, can not be because piezo-resistor and elasticity break away from the interval of piece nearer, and make two components produce electric arc in the air, reduced the emergence of accident, improved the safety and stability nature of protector.

Description

Special surge protector of photovoltaic

Technical Field

The utility model relates to a protector field, in particular to special surge protector of photovoltaic.

Background

Because the equipment of required photovoltaic all exposes in the open air generally, can produce various instantaneous overvoltage when reasons such as thunder, electric wire netting are undulant, the switch of equipment and the wrong connection in the use, can produce serious damage to photovoltaic equipment to electronic component is very sensitive again, and in order to ensure its life, effectual lightning protection and surge protector are indispensable. The existing protector mostly adopts a tripping mechanism, when a large power supply flows through the protector, the welding position of a piezoresistor in the protector generates high temperature, so that the welding position can be melted and a circuit can be cut off, and the damage of an electronic element can be prevented. After the two components are melted and separated, electric arcs can be generated in the air due to the close interval, equipment is damaged, and accidents are easy to happen.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a special surge protector of photovoltaic through adopting arc shielding mechanism, when the protector is tripped, can not be because piezo-resistor and the interval of elasticity break away from piece are nearer, and make two components produce electric arc in the air, have reduced the emergence of accident, have improved the safety and stability nature of protector.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a surge protector special for photovoltaic comprises a protector body, a piezoresistor, a spring piece separating piece and an arc shielding mechanism; the piezoresistor is arranged in the protector body, and the piezoresistor is connected with the elastic sheet separating piece through fusible metal welding; the arc shielding mechanism is arranged on the protector body; the arc shielding mechanism comprises an electromagnet, a permanent magnet, a rotating rod, a sliding block and an arc shielding baffle plate; a rotating shaft is fixedly arranged on the protector body; the rotating shaft is movably provided with the rotating rod, a first return spring is arranged between the rotating rod and the protector body, one end of the first return spring is connected with the rotating rod, and the other end of the first return spring is connected with the protector body; the permanent magnet is arranged at one end of the rotating rod, and the electromagnet is arranged on one side of the permanent magnet; the electromagnet is electrically connected with the piezoresistor through a wire, and the electromagnet and the permanent magnet are attracted or repelled; the other end of the rotating rod is provided with a connecting rod, and the front end of the connecting rod is connected with the sliding block; a sliding groove is arranged in the protector body; the slider movable mounting be in the spout one end of slider is connected with arc blocking barrier plate hides, arc blocking barrier plate is located under the piezo-resistor welding department.

As an optimized scheme of the utility model the protector is internal to be provided with first electrode and second electrode respectively, first electrode with piezo-resistor connects, the second electrode with piezo-resistor's welding department and shell fragment break away from the piece and connect.

As a preferred scheme of the utility model, the one end that the shell fragment breaks away from the piece is installed on this internal reference column of protector, the other end that the shell fragment breaks away from the piece pass through second reset spring with this body coupling of protector.

As a preferred scheme of the utility model, the arc-shielding baffle is made of insulator materials.

To sum up, the utility model discloses following beneficial effect has: the utility model discloses an adopt arc-shielding mechanism, when the protector is tripped, can not make two components produce electric arc in the air because varistor's the interval with elasticity break away from the piece is more nearer, has reduced the emergence of accident, has improved the safety and stability nature of protector.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

The corresponding part names indicated by the numbers and letters in the drawings:

1-protector body 2-piezoresistor 3-welding part 4-second reset spring

5-elastic separation piece 6-sliding block 7-connecting rod 8-sliding groove

9-second electrode 10-first return spring 11-rotating shaft 12-rotating rod

13-permanent magnet 14-electromagnet 15-first electrode 16-lead

17-arc-shielding group baffle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

As shown in fig. 1, the utility model relates to a special surge protector of photovoltaic, when the heavy current flows through the circuit, comes the cut-off circuit through the protector, and then plays the guard action, the utility model discloses a protector body 1, piezo-resistor 2, shell fragment break away from the piece and hide arc mechanism.

Specifically, install piezo-resistor 2 in protector body 1, piezo-resistor 2 and shell fragment break away from 5 through fusible metal welded connection. The one end that the shell fragment breaks away from piece 5 is installed on the reference column in protector body 1, and the other end that the shell fragment breaks away from piece 5 passes through second reset spring 4 and is connected with protector body 1, and then when the protector is tripped, the varistor 2, protection circuit are kept away from to the messenger elasticity that can be rapid that makes break away from piece 5. Be provided with first electrode 15 and second electrode 9 in protector body 1 respectively, first electrode 15 is connected with piezo-resistor 2, and second electrode 9 is connected with piezo-resistor 2's splice 3 and shell fragment stripping member 5, can not only make the normal work of circuit, can also protect the circuit.

However, an arc-shielding mechanism including an electromagnet 14, a permanent magnet 13, a rotating lever 12, a slider 6, and an arc-shielding barrier 17 is mounted on the protector body 1. Fixed mounting has pivot 11 on protector body 1, and movable mounting has dwang 12 on pivot 11, is provided with first reset spring 10 between dwang 12 and protector body 1, and the one end and the dwang 12 of first reset spring 10 are connected, and the other end and the protector body 1 of first reset spring 10 are connected. The first return spring 10 is used for pulling the rotating rod 12, so that the rotating rod 12 is rapidly pushed when the protector is tripped, and the safety of the protector is improved. A permanent magnet 13 is installed at one end of the rotating rod 12, an electromagnet 14 is installed at one side of the permanent magnet 13, and the electromagnet 14 and the piezoresistor 2 are electrically connected through a conducting wire 16, so that the electromagnet 14 and the permanent magnet 13 are attracted or repelled. A connecting rod 7 is provided at the other end of the rotating rod 12, a slider 6 is connected to the front end of the connecting rod 7, and a chute 8 is provided in the protector body 1. The slider 6 is movably arranged in the sliding groove 8, one end of the slider 6 is connected with an arc shielding baffle plate 17, the arc shielding baffle plate 17 is positioned right below the welding part 3 of the piezoresistor 2, and the arc shielding baffle plate 17 is made of an insulator material. Through arc-shielding baffle 17, when the protector is tripped, the voltage dependent resistor 2 and the elastic separating piece 5 are rapidly inserted into the middle of the protector, so that electric arcs generated by the two elements in the air are isolated, and the circuit is protected.

The utility model discloses an action principle process: the protector is inserted into the protector base to be electrified, the first electrode 15 is connected with the piezoresistor 2, the second electrode 9 is connected with the welding part 3 and the elastic separating piece 5, and the protector keeps normal work in a circuit. When the protector works normally, because the piezoresistor 2 is electrically connected with the electromagnet 14, the electromagnet 14 and the permanent magnet 13 generate strong attraction, the rotating rod 12 moves downwards under the spring force of the first return spring 10 to drive the sliding block 6 to move downwards, so that the arc shielding group partition plate 17 is far away from the welding part 3 of the piezoresistor 2 and the elastic separating piece 5. When the protector meets large current, the welding part 3 of the piezoresistor 2 and the elastic separating part 5 is overhigh in temperature due to the current, so that the piezoresistor 2 and the elastic separating part 5 are separated, because the piezoresistor 2 is electrically connected with the electromagnet 14, at the moment, the electromagnet 14 and the permanent magnet 13 generate strong repulsion, the permanent magnet 13 is separated from the attraction of the electromagnet 14, the rotating rod 12 is under the spring force of the first reset spring 10, the rotating rod 12 is rapidly driven to rotate upwards, further, the sliding block 6 at the front end of the connecting rod 7 is driven to move upwards, the arc shielding group partition plate 17 is rapidly pushed to the position between the piezoresistor and the elastic separating part 5, the electric arc generated by the two elements in the air is isolated, and because the arc shielding group partition plate 17 is made of an insulating material, the arc shielding effect is improved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A surge protector special for photovoltaic is characterized by comprising a protector body, a piezoresistor, a spring piece separating piece and an arc shielding mechanism; the piezoresistor is arranged in the protector body, and the piezoresistor is connected with the elastic sheet separating piece through fusible metal welding; the arc shielding mechanism is arranged on the protector body; the arc shielding mechanism comprises an electromagnet, a permanent magnet, a rotating rod, a sliding block and an arc shielding baffle plate; a rotating shaft is fixedly arranged on the protector body; the rotating shaft is movably provided with the rotating rod, a first return spring is arranged between the rotating rod and the protector body, one end of the first return spring is connected with the rotating rod, and the other end of the first return spring is connected with the protector body; the permanent magnet is arranged at one end of the rotating rod, and the electromagnet is arranged on one side of the permanent magnet; the electromagnet is electrically connected with the piezoresistor through a wire, and the electromagnet and the permanent magnet are attracted or repelled; the other end of the rotating rod is provided with a connecting rod, and the front end of the connecting rod is connected with the sliding block; a sliding groove is arranged in the protector body; the slider movable mounting be in the spout one end of slider is connected with arc blocking barrier plate hides, arc blocking barrier plate is located under the piezo-resistor welding department.

2. The surge protector special for photovoltaic according to claim 1, wherein a first electrode and a second electrode are respectively arranged in the protector body, the first electrode is connected with the piezoresistor, and the second electrode is connected with a welding part of the piezoresistor and the elastic sheet separating piece.

3. The surge protector special for photovoltaic as claimed in claim 1, wherein one end of the elastic sheet separating member is mounted on the positioning column in the protector body, and the other end of the elastic sheet separating member is connected with the protector body through a second return spring.

4. The surge protector special for photovoltaic as recited in claim 1, wherein the arc blocking barrier is made of an insulator material.