Lightning protection device capable of bearing continuous surge impact

Abstract

The utility model discloses a lightning protection device capable of bearing continuous surge impact, and relates to the technical field of lightning protection devices. Comprising a first shell, a second shell is installed at the top end of the first shell, four piezoresistors are arranged in the first shell, every two piezoresistors form a group, the first shell is divided into two areas, namely a main area and a standby area, a first PCB is arranged above the four piezoresistors, four connecting ports are formed in the first PCB, soldering tin is slidably connected into the four connecting ports, and a second PCB is arranged above the main area and the standby area. The bottom end of the soldering tin is connected with the piezoresistor, and the soldering tin is provided with a tripping protection metal elastic sheet above the first PCB. According to the utility model, the four piezoresistors are arranged, every two piezoresistors form one group, the four piezoresistors are divided into two areas, namely the main area and the standby area, and the response time of the main area is far shorter than that of the standby area. When the main area operates, the standby area does not operate, and when the main area is impacted by 10 times of pulses at most, the main area can bear multiple times of pulses again after being cooled to the normal temperature.

Description

TECHNICAL FIELD

[0001] The utility model relates to lightning protection device technical field, concretely is a lightning protection device that can bear continuous surge impact. BACKGROUND

[0002] The surge protection device is used for protecting electrical equipment from damage caused by power surges or surges. Power surges or surges are usually caused by lightning, switch operation, power system failure, etc. These fluctuations may exceed the bearing range of the equipment, resulting in equipment damage, unstable operation or reduced service life. Current tests on surge protectors are all single waveforms, while real lightning has multiple pulse discharge characteristics. This will result in a poor actual use effect of the surge protection device compared to the test, and there is a great instability in the running process, and even the possibility of fire and burning phenomenon, which poses a safety hazard and causes great losses to power, communication and personal safety. The existing surge protection device (publication number: CN222192843U) has the following disadvantages in use:

[0003] It can bear fewer pulses, and the protection device must be replaced in time once it is damaged, and it has poor ability to deal with unexpected situations. Therefore, the present patent proposes a lightning protection device that can bear continuous surge impact to solve the above problems. INVENTION CONTENTS

[0004] The utility model aims at providing a lightning protection device that can bear continuous surge impact to solve the problems raised in the background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a lightning protection device that can bear continuous surge impact, comprising a first shell, a second shell is installed at the top end of the first shell, four pressure sensitive resistors are arranged in the first shell, two by two as a group, divided into two areas, respectively main area and standby area, a first PCB board is arranged above the four pressure sensitive resistors, four connecting ports are formed in the first PCB board, soldering tin is slidably connected in the four connecting ports, the bottom end of the soldering tin is connected with the pressure sensitive resistor, a trip protection metal spring is installed above the soldering tin on the first PCB board, and a terminal is installed at one end of the bottom of the trip protection metal spring.

[0006] Preferably, a second PCB board is installed on the inner wall of the top end of the second shell, four microswitches are installed at the bottom end of the second PCB board, and four indicator lights are installed at the top end of the second shell.

[0007] Preferably, four sockets are formed in one side of the first shell.

[0008] Preferably, a plurality of heat dissipation openings are formed in the bottom end of the first shell.

[0009] Preferably, the top end of the first shell is provided with a mounting shell which is inserted into the second shell.

[0010] Preferably, the outer wall of the mounting shell is fixed with a plurality of limiting blocks, and the outer wall of the second shell is provided with a plurality of limiting openings corresponding to the limiting blocks, and the limiting blocks are inserted into the limiting openings.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] Through setting 4 pressure sensitive resistances, two two are a group, divide into two areas, be main area and spare area respectively, the response time of main area is far faster than spare area. When main area operates, spare area does not operate, when main area receives maximum 10 times pulse impact, can bear multiple pulses again after cooling to normal temperature. Each pressure sensitive resistance is connected through first PCB board and ejection protection metal spring with soldering tin, when main area is damaged, the soldering tin will melt when the temperature of ejection soldering point is too high, and the ejection protection metal spring will pop up, and press against the corresponding micro switch above, realize switch function, and the micro switch and indicator lamp are connected through second PCB board, realize indication and transmission fault signal function. When main area does not operate, when main area is damaged and fails, spare area starts work, and replaces main area to continue to work. Provide secondary protection mechanism for surge protection device, improve the ability of anti-surge impact, save replacement cost, improve the ability of device to deal with sudden situation, provide longer fault tolerance time for replacing surge protector. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the whole structure schematic diagram of the utility model;

[0014] Figure 2 It is the split schematic diagram of the utility model;

[0015] Figure 3 It is the second PCB board structure schematic diagram of the utility model;

[0016] Figure 4 It is the heat dissipation opening structure schematic diagram of the utility model.

[0017] In the drawing: 1, first shell;2, second shell;3, pressure sensitive resistance;4, first PCB board;5, soldering tin;6, ejection protection metal spring;7, terminal;8, mounting shell;9, limiting block;10, second PCB board;11, micro switch;12, indicator lamp;13, limiting opening;14, socket;15, heat dissipation opening. DETAILED DESCRIPTION

[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0019] The surge protection device is used for protecting electrical equipment from damage caused by surges or surges. The surge or surge is usually caused by transient voltage fluctuations due to lightning, switch operation, power system failure, etc. These fluctuations may exceed the range of the device, causing damage to the device, unstable operation or reducing the service life. Current tests for surge protectors are all single waveforms, while real lightning has multiple pulse discharge characteristics. This will result in a relatively poor actual use effect of the surge protection device compared to the test. There is also a lot of instability in the running process, and even the possibility of fire and burning phenomenon may occur, which poses a safety hazard, causing huge losses to power, communication and personal safety, etc. The existing surge protection device can withstand fewer pulses, and the protection device must be replaced in time once it is damaged, and the ability to deal with unexpected situations is poor. The lightning protection device provided by the present application can withstand continuous surge impact by setting four varistors 3, two of which are a group, divided into two areas, namely the main area and the standby area. The response time of the main area is much faster than that of the standby area. When the main area is operating, the standby area does not operate. When the main area is subjected to a maximum of 10 pulse impacts, it can withstand multiple pulses again after cooling to room temperature. Each varistor 3 is connected by soldering 5 through the first PCB board 4 and the tripping protection metal spring 6. When the main area is damaged, the soldering point will melt when the temperature is too high, and the tripping protection metal spring 6 will pop up and push the corresponding micro switch 11 upwards, realizing the switching function. The micro switch 11 and the indicator light 12 are also connected through the second PCB board 10, realizing the indication and transmission of the fault signal function. The spring pops up and the main area does not operate. When the main area is damaged and fails, the standby area starts to work and replaces the main area to continue to work. The surge protection device provides a secondary protection mechanism, improves the anti-surge impact capability, saves the replacement cost, improves the ability to deal with unexpected situations, and provides a longer fault tolerance time for replacing the surge protector.

[0020] As Figures 1-4As shown, the utility model provides a technical scheme: a lightning protection device that can bear continuous surge impact, including first casing 1, the top of first casing 1 is equipped with second casing 2, four piezoresistors 3 are arranged in first casing 1, two two are a group, and are divided into two areas, and are main area and standby area respectively, first PCB board 4 is arranged above four piezoresistors 3, four connecting ports are formed in first PCB board 4, soldering tin 5 is slidably connected in four connecting ports, the bottom of soldering tin 5 is connected with piezoresistor 3, soldering tin 5 is located above first PCB board 4 and is equipped with tripping protection metal spring 6, and one end bottom of tripping protection metal spring 6 is equipped with terminal 7. The inner wall of the top of second casing 2 is equipped with second PCB board 10, four microswitches 11 are installed at the bottom of second PCB board 10, and four indicator lights 12 are installed at the top of second casing 2.

[0021] It should be noted that by setting 4 piezoresistors 3, two two are a group, and are divided into two areas, and are main area and standby area respectively, the response time of main area is much faster than that of standby area. When the main area operates, the standby area does not operate, and after the maximum 10 pulse impacts are received by the main area, the main area can bear multiple pulses again after cooling to normal temperature. Each piezoresistor 3 is connected with tripping protection metal spring 6 by first PCB board 4 and soldering tin 5. When the main area is damaged, the soldering tin 5 will melt once the temperature of the tripping solder joint is too high, and the tripping protection metal spring 6 will pop up and press against the corresponding microswitch 11 above, realizing the switching function. The microswitch 11 and the indicator light 12 are also connected by the second PCB board 10, realizing the indication and transmission of fault signal. When the main area is damaged and fails, the standby area starts to work and replaces the main area to continue working. The surge protection device provides a secondary protection mechanism, improves the anti-surge impact capability, saves the replacement cost, improves the ability to deal with unexpected situations, and provides a longer fault tolerance time for replacing the surge protector.

[0022] As shown in Figure 1 , Figure 2 and Figure 4 , four sockets 14 are formed in one side of first casing 1. A plurality of heat dissipation holes 15 are formed in the bottom end of first casing 1. A mounting shell 8 is installed at the top end of first casing 1 and is inserted into second casing 2. A plurality of limiting blocks 9 are fixed to the outer wall of mounting shell 8, and a plurality of limiting openings 13 corresponding to the limiting blocks 9 are formed in the outer wall of second casing 2, and the limiting blocks 9 are inserted into the limiting openings 13.

[0023] It should be noted that the first shell 1 is cooled through the heat dissipation port 15, the first shell 1 and the second shell 2 are connected through the limiting block 9, and the mounting shell 8 and the limiting block 9 are both elastic and can be bent and deformed to a certain extent without breaking, can adapt to the slight displacement and vibration of the connecting components, and ensure the stability of the connection.

[0024] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended embodiments and their equivalents.

Claims

1. A lightning protection device capable of withstanding continuous surge impact, comprising a first housing (1), characterized in that: The top end of the first shell (1) is provided with the second shell (2), four pressure sensitive resistors (3) are arranged in the first shell (1), two by two as a group, divided into two areas, which are the main area and the standby area, a first PCB board (4) is arranged above the four pressure sensitive resistors (3), four connecting ports are formed in the first PCB board (4), and soldering tin (5) is slidably connected in the four connecting ports, the bottom end of the soldering tin (5) is connected with the pressure sensitive resistor (3), the soldering tin (5) is provided with a tripping protection metal spring (6) above the first PCB board (4), and the bottom of one end of the tripping protection metal spring (6) is provided with a terminal (7).

2. The lightning protection device capable of withstanding continuous surge impact according to claim 1, characterized in that: The inner wall of the top end of the second shell (2) is provided with a second PCB board (10), the bottom end of the second PCB board (10) is provided with four micro switches (11), and the top end of the second shell (2) is provided with four indicator lights (12).

3. The lightning protection device capable of withstanding continuous surge impact according to claim 1, characterized in that: The side of the first shell (1) is provided with four sockets (14).

4. The lightning protection device of claim 1, wherein: The bottom end of the first shell (1) is provided with a plurality of heat dissipation openings (15).

5. The lightning protection device of claim 1, wherein: The top end of the first shell (1) is provided with a mounting shell (8), and the mounting shell (8) is inserted into the second shell (2).

6. A lightning protection device capable of withstanding continuous surge impact according to claim 5, characterized in that: The outer wall of the mounting shell (8) is fixed with a plurality of limiting blocks (9), the outer wall of the second shell (2) is provided with a plurality of limiting openings (13) corresponding to the limiting blocks (9), and the limiting blocks (9) are inserted into the limiting openings (13).

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