Lightning protection device capable of bearing continuous surge impact

Abstract

The invention 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 invention, 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 invention relates to the technical field of lightning protection devices, in particular to a lightning protection device capable of withstanding continuous surge impacts. Background Art

[0002] Surge protection devices are used to protect electrical equipment from damage caused by power surges or surges. Power surges or surges are usually instantaneous voltage fluctuations caused by lightning, switching operations, power system failures, etc. These fluctuations may exceed the tolerance range of the equipment, resulting in equipment damage, unstable operation, or reduced service life. The current test experiments for surge protectors are all conducted with a single waveform, while real lightning strikes have multiple pulse discharge characteristics. This will result in the actual use effect of the surge protection device being worse than the test, and there is also great instability during operation, and there is even the possibility of fire and combustion. There are safety hazards, which have caused huge losses to electricity, communications, and personal safety. The existing surge protection device (Announcement No.: CN222192843U) has the following disadvantages in use: It withstands fewer pulses, and once the protection device is damaged, it must be replaced in time. It has poor ability to cope with emergencies and low protection effect. For this reason, this patent proposes a lightning protection device that can withstand continuous surge impacts to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a lightning protection device capable of withstanding continuous surge impacts, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a lightning protection device capable of withstanding continuous surge impacts, comprising a first shell, a second shell being installed on the top of the first shell, four varistors being arranged in the first shell, two of which are grouped together and divided into two areas, namely a main area and a spare area, a first PCB board being arranged above the four varistors, four connection ports being provided in the first PCB board, solder being slidably connected in the four connection ports, the bottom end of the solder being connected to the varistor, a tripping protection metal spring being installed on the solder located above the first PCB board, and a wiring terminal being installed at the bottom of one end of the tripping protection metal spring.

[0005] Furthermore, a second PCB board is installed on the inner wall of the top end of the second shell, four micro switches are installed on the bottom end of the second PCB board, and four indicator lights are installed on the top end of the second shell.

[0006] Furthermore, one side of the first shell is provided with four sockets.

[0007] Furthermore, a plurality of heat dissipation openings are formed at the bottom end of the first shell.

[0008] Furthermore, a first placement cavity is provided in the first shell, and the varistor is located in the first placement cavity.

[0009] Furthermore, a second placement cavity is provided in the first shell, and the connection terminal is located in the second placement cavity.

[0010] Furthermore, a connecting piece is integrally formed at one end of the trip protection metal spring, and a first screw is screwed between the connecting piece and the wiring terminal.

[0011] Furthermore, a second screw is screwed between the second PCB board and the second shell.

[0012] Furthermore, a mounting shell is installed at the top end of the first shell, and the mounting shell is plugged into the second shell.

[0013] Furthermore, a plurality of limit blocks are fixed to the outer wall of the mounting shell, and a plurality of limit openings corresponding to the limit blocks are formed on the outer wall of the second shell, and the limit blocks are inserted into the limit openings.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By setting 4 varistors, two in a group, divided into two areas, namely the main area and the backup area, the response time of the main area is much faster than that of the backup area. When the main area is operating, the backup area does not operate. When the main area is subjected to a maximum of 10 pulse shocks, it can withstand multiple pulses again after cooling to room temperature; each varistor is connected to the tripping protection metal spring through the first PCB board with solder. When the main area is damaged, once the temperature of the tripping welding point is too high, the solder will melt, and the tripping protection metal spring will bounce up and hold up the corresponding micro switch above to realize the switch function. When the tripping protection metal spring bounces up, the main area will not operate. When the main area is damaged and fails, the backup area starts to work and continues to work instead of the main area. It provides a secondary protection mechanism for the surge protection device, improves the ability to resist surge shocks, saves replacement costs, improves the ability of the device to cope with emergencies, and provides a longer fault tolerance time for replacing the surge protector.

[0015] At the same time, the micro switch and the indicator light are also connected through the second PCB board to indicate and transmit the fault signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the splitting of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4It is a schematic diagram of the structure of the second PCB board of the present invention; Figure 5 It is a schematic diagram of the heat dissipation port structure of the present invention; Figure 6 It is a schematic diagram of the structure of the first placement cavity of the present invention.

[0017] In the figure: 1. first shell; 2. second shell; 3. varistor; 4. first PCB board; 5. solder; 6. trip protection metal spring; 7. terminal; 8. mounting shell; 9. limit block; 10. second PCB board; 11. micro switch; 12. indicator light; 13. limit port; 14. socket; 15. heat dissipation port; 16. first placement cavity; 17. second placement cavity; 18. connector; 19. first screw. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Surge protection devices are used to protect electrical equipment from damage caused by surges or surges. Surges or surges are usually instantaneous voltage fluctuations caused by lightning, switching operations, power system failures, etc. These fluctuations may exceed the tolerance range of the equipment, resulting in equipment damage, unstable operation or reduced service life. The current test experiments for surge protectors are all conducted with a single waveform, while real lightning strikes have multiple pulse discharge characteristics. This will result in the actual use effect of the surge protection device being worse than the test. There is also great instability during operation, and there is even the possibility of fire and combustion. There are safety hazards, which have caused huge losses to electricity, communications and personal safety. Existing surge protection devices withstand fewer pulses. Once the protection device is damaged, it must be replaced in time. The ability to cope with emergencies is poor. Many electrical equipment and buildings are easily damaged by lightning strikes and power surges. In the case of multiple surges or continuous surges, its protection effect is greatly reduced, and even no effective protection can be provided. Therefore, there is an urgent need for a lightning protection device that can withstand continuous surge impacts. The lightning protection device that can withstand continuous surge impacts provided by the present invention is divided into two areas by setting 4 varistors 3, two by two in a group, namely the main area and the standby area, and the response time of the main area is much faster than that of the standby area. When the main area is in operation, 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 to the tripping protection metal spring 6 through the first PCB board 4 with solder 5. When the main area is damaged, once the temperature of the tripping welding point is too high, the solder 5 will melt, and the tripping protection metal spring 6 will bounce up and hold the corresponding micro switch 11 above to realize the switch function. The micro switch 11 is also connected to the indicator light 12 through the second PCB board 10 to realize the indication and transmission of fault signals. When the spring bounces up, the main area will not operate. When the main area is damaged and fails, the standby area starts to work and continues to work instead of the main area. It provides a secondary protection mechanism for the surge protection device, improves the ability to resist surge impact, saves replacement costs, improves the device's ability to cope with emergencies, and provides a longer fault tolerance time for replacing the surge protector.

[0020] like Figure 1-Figure 6As shown, the present invention provides a technical solution: a lightning protection device capable of withstanding continuous surge impact, comprising a first housing 1, a second housing 2 is installed at the top of the first housing 1, four varistors 3 are arranged in the first housing 1, two of them are grouped together, and divided into two areas, namely a main area and a standby area, a first PCB board 4 is arranged above the four varistors 3, four connection ports are provided in the first PCB board 4, solder 5 is slidably connected in the four connection ports, the bottom end of the solder 5 is connected to the varistor 3, the solder 5 is located above the first PCB board 4 and a tripping protection metal spring 6 is installed, and a terminal 7 is installed at the bottom of one end of the tripping protection metal spring 6. A second PCB board 10 is installed on the inner wall of the top end of the second housing 2, four micro switches 11 are installed at the bottom end of the second PCB board 10, and four indicator lights 12 are installed at the top end of the second housing 2.

[0021] It should be noted that by setting up four varistors 3, two in a group, divided into two areas, namely the main area and the spare area, the response time of the main area is much faster than that of the spare area. When the main area is operating, the spare area does not operate. When the main area is subjected to a maximum of 10 pulse shocks, it can withstand multiple pulses again after cooling to room temperature; each varistor 3 is connected to the tripping protection metal spring 6 through the first PCB board 4 with solder 5. When the main area is damaged, once the temperature of the tripping welding point is too high, the solder 5 will melt, and the tripping protection metal spring 6 will bounce up and hold the corresponding micro switch 11 above to realize the switch function. The micro switch 11 and the indicator light 12 are also connected through the second PCB board 10 to indicate and transmit the fault signal. When the tripping protection metal spring 6 bounces up, the main area will not operate. When the main area is damaged and fails, the spare area starts to work and continues to work instead of the main area. It provides a secondary protection mechanism for the surge protection device, improves the ability to resist surge impact, saves replacement costs, improves the device's ability to cope with emergencies, and provides a longer fault tolerance time for replacing the surge protector.

[0022] like Figure 1 , Figure 2 and Figure 4As shown, four sockets 14 are provided on one side of the first shell 1. A plurality of heat dissipation ports 15 are provided at the bottom end of the first shell 1. A first placement cavity 16 is provided in the first shell 1, and the varistor 3 is located in the first placement cavity 16. A second placement cavity 17 is provided in the first shell 1, and the terminal 7 is located in the second placement cavity 17. A connector 18 is integrally formed at one end of the release protection metal spring 6, and a first screw 19 is screwed between the connector 18 and the terminal 7. A second screw is screwed between the second PCB board 10 and the second shell 2. A mounting shell 8 is installed at the top end of the first shell 1, and the mounting shell 8 is plugged into the second shell 2. A plurality of limit blocks 9 are fixed to the outer wall of the mounting shell 8, and a plurality of limit openings 13 corresponding to the limit blocks 9 are provided on the outer wall of the second shell 2, and the limit blocks 9 are plugged into the limit openings 13.

[0023] It should be noted that by setting a plurality of heat dissipation ports 15, when the lightning protection device is working, especially under surge impact, a certain amount of heat will be generated. The heat dissipation ports 15 can help release the heat in time to prevent the temperature from being too high and affecting the stability and life of the device. The first shell 1 and the second shell 2 are connected by the limit block 9. The mounting shell 8 and the limit block 9 are both elastic and can be bent and deformed to a certain extent without breaking. They can adapt to the slight displacement and vibration of the connecting parts and ensure the stability of the connection. The first screw 19 is used to fix the terminal 7 to the connector 18 of the tripping protection metal spring 6, which can ensure the stability and safety of the connection during long-term use. The second PCB board 10 is screwed with the second shell 2, and the second screw is used to fix the second PCB board 10 in the second shell 2. This method can provide a firm connection and ensure that the second PCB board 10 is firmly held in the second shell 2.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A lightning protection device capable of withstanding continuous surge impacts, comprising a first housing (1), characterized in that: A second shell (2) is installed at the top of the first shell (1). Four varistors (3) are arranged in the first shell (1). The four varistors (3) are grouped in pairs and divided into two areas, namely a main area and a standby area. A first PCB board (4) is arranged above the four varistors (3). Four connection ports are provided in the first PCB board (4). Solder (5) is slidably connected in the four connection ports. The bottom end of the solder (5) is connected to the varistor (3). A tripping protection metal spring (6) is installed above the solder (5) located above the first PCB board (4). A wiring terminal (7) is installed at the bottom of one end of the tripping protection metal spring (6).

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

3. A lightning protection device capable of withstanding continuous surge impact according to claim 1, characterized in that: Four sockets (14) are provided on one side of the first shell (1).

4. A lightning protection device capable of withstanding continuous surge impact according to claim 1, characterized in that: A plurality of heat dissipation openings (15) are provided at the bottom end of the first shell (1).

5. A lightning protection device capable of withstanding continuous surge impact according to claim 1, characterized in that: A first placement cavity (16) is provided in the first housing (1), and the varistor (3) is located in the first placement cavity (16).

6. A lightning protection device capable of withstanding continuous surge impact according to claim 5, characterized in that: A second placement cavity (17) is provided in the first housing (1), and the connection terminal (7) is located in the second placement cavity (17).

7. A lightning protection device capable of withstanding continuous surge impact according to claim 1, characterized in that: A connecting piece (18) is integrally formed at one end of the release protection metal spring (6), and a first screw (19) is screwed between the connecting piece (18) and the wiring terminal (7).

8. A lightning protection device capable of withstanding continuous surge impact according to claim 2, characterized in that: A second screw is screwed between the second PCB board (10) and the second housing (2).

9. A lightning protection device capable of withstanding continuous surge impact according to claim 1, characterized in that: A mounting shell (8) is mounted on the top end of the first shell (1), and the mounting shell (8) is plugged into the second shell (2).

10. A lightning protection device capable of withstanding continuous surge impacts according to claim 9, characterized in that: A plurality of limit blocks (9) are fixed to the outer wall of the mounting shell (8), and a plurality of limit openings (13) corresponding one to one with the limit blocks (9) are formed on the outer wall of the second shell (2), and the limit blocks (9) are inserted into the limit openings (13).

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