CN215733479U

CN215733479U - Overvoltage protection device

Info

Publication number: CN215733479U
Application number: CN202122259913.3U
Authority: CN
Inventors: 阴伟华; 张明林
Original assignee: Shenzhen Huibang Security Technology Co ltd
Current assignee: Shenzhen Huibang Security Technology Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-02-01
Anticipated expiration: 2031-09-17

Abstract

The utility model discloses an overvoltage protection device which comprises an installation plate, wherein a protective shell is welded in the center of the front end of the installation plate, a plurality of wiring boards are welded at the rear ends of the two sides of the outer wall of the protective shell, a buckle cover is fixedly connected in the center of the front end of the protective shell, a pressure regulating panel is installed at the bottom of one side of the center of the front end of the buckle cover, a regulating button is installed at the bottom of one side of the center of the front end of the buckle cover, which is far away from the pressure regulating panel, a digital display screen is embedded in the top of the center of the front end of the buckle cover, and an overvoltage protection device body is fixedly connected on the two sides of the center of the rear end of the inner wall of the protective shell. According to the utility model, through the multiple groups of magnetic induction assemblies, the multiple groups of conduction pins, the multiple groups of electrifying assemblies, the conducting plates, the voltage control elements and the voltage sensors which are arranged on the protective shell, the voltage value in the circuit can be detected in real time, once voltage overload is detected, voltage division and reduction are carried out immediately, the real-time performance is strong, the detection performance is sharp, the overvoltage prevention capability is excellent, and the safety of the circuit is effectively ensured.

Description

Overvoltage protection device

Technical Field

The utility model relates to the technical field of circuit protection, in particular to an overvoltage protection device.

Background

Overvoltage protection refers to a protection mode that disconnects the power supply or reduces the voltage of the controlled device when the protected line voltage exceeds a predetermined maximum value.

For most electric equipment, the voltage range of a working power supply is strictly limited, and the overvoltage can cause serious influence on the work of the equipment, damage to the equipment and even accidents, so that the power supply of the electric equipment is monitored and protected in real time, and the normal work of the electric equipment is very necessary. When the existing overvoltage protection device carries out overvoltage protection on a circuit, real-time detection is difficult to realize, the detection timeliness is poor, the voltage rising and falling acuity is not good, the voltage rising value cannot be accurately detected, partial voltage reduction or power-off protection cannot be carried out in time, and potential safety hazards exist; when the overvoltage protection device is used for performing overvoltage protection, the temperature in the overvoltage protection device rises due to the rise of voltage, and the conventional overvoltage protection device is not provided with a good heat dissipation structure to protect elements in the overvoltage protection device, so that the device is easily damaged, and the service life of the overvoltage protection device is influenced.

It is therefore desirable to provide an overvoltage protection device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that the existing overvoltage protection device is difficult to detect in real time when performing overvoltage protection on a circuit, has poor detection timeliness and poor voltage rise and fall acuity, cannot accurately detect the voltage rise value, and cannot perform voltage division and voltage reduction or power-off protection in time; when the overvoltage protection device executes overvoltage protection, the temperature inside the overvoltage protection device rises due to the rise of voltage, and a good heat dissipation structure is not arranged inside the overvoltage protection device to protect elements inside the overvoltage protection device, so that the device is easily damaged, and potential safety hazards exist.

In order to solve the technical problems, the utility model adopts a technical scheme that: the protection device comprises a mounting plate, wherein a protective shell is welded in the center of the front end of the mounting plate, the protective shell is used for mounting an overvoltage protection device body, a plurality of wiring boards are welded at the rear ends of two sides of the outer wall of the protective shell, the wiring boards are used for connecting the protective shell in a circuit, a buckle cover is fixedly connected in the center of the front end of the protective shell and used for protecting the inside of the protective shell, a voltage regulating panel is mounted at the bottom of one side of the center of the front end of the buckle cover and used for regulating a voltage control element, a regulating button is mounted at the bottom of one side, away from the voltage regulating panel, of the center of the front end of the buckle cover and used for setting a safe voltage value, a digital display screen is embedded in the top of the center of the front end of the buckle cover and used for displaying the voltage value;

the overvoltage protection device bodies are fixedly connected to two sides of the center of the rear end of the inner wall of the protective shell and used for power-off or voltage-reduction protection when voltage in a circuit is overloaded, a plurality of magnetic induction assemblies are uniformly mounted in the centers of the inner walls of the two overvoltage protection device bodies and used for conducting or disconnecting the circuit, and conducting pins are fixedly connected to one sides, away from the inner wall of the protective shell, of the magnetic induction assemblies and used for being electrically connected with the conducting assemblies;

a plurality of lead piles are uniformly welded at the rear ends of the two sides of the inner wall of the protective shell and are used for connecting the wiring board with the overvoltage protection device body, and the lead piles and the overvoltage protection device body are fixedly connected through power lines;

the protection shell is characterized in that an insulating sheet is fixedly connected to the center of the rear end of the protection shell and used for preventing short circuit of the current conducting plate, the current conducting plate is fixedly connected to the center of the front end of the insulating sheet and used for conducting the magnetic induction assemblies on two sides, connecting sheets are welded to the top and the bottom of two sides of the current conducting plate and used for mounting electrifying assemblies, electrifying assemblies are fixedly connected to one sides, close to the magnetic induction assemblies, of the connecting sheets and the current conducting plate, two electrifying assemblies in the electrifying assemblies are in a joint state with conducting pins under normal conditions, and when the voltage value in the circuit is too high, one or two electrifying assemblies are connected to conduct voltage division according to the actual voltage value;

the top and the bottom of the center of the inner wall of the protective shell are fixedly connected with radiating fans which are used for evacuating heat in the protective shell, the top of the center of the rear end of the protective shell is fixedly connected with a voltage control element, and the voltage control element is used for controlling connection and disconnection of a plurality of power-on assemblies;

and a plurality of voltage sensors are uniformly arranged in the centers of the inner walls of the two overvoltage protection devices, and are used for detecting voltage values and feeding the voltage values back to the voltage control element.

Preferably, the voltage regulating panel is electrically connected with the voltage control element through a wire, so that the voltage control element can receive signals sent by the voltage regulating panel conveniently.

Preferably, the digital display screen is electrically connected with the voltage sensor through a wire, so that the voltage sensor can feed the voltage value back to the digital display screen.

Preferably, the magnetic induction assembly comprises an iron core and a coil, the iron core can generate a magnetic field when the coil is electrified, and the electrified assembly is attracted through a conducting pin.

Preferably, the outer wall of the iron core is uniformly wound with coils.

Preferably, the power line is connected with the lead pile in a winding mode, so that the stability of wiring can be guaranteed.

Preferably, the power-on component comprises an elastic body and a valve plate, and the elastic body can separate the valve plate from the conducting pin when the magnetic induction component is powered off to form overvoltage protection.

Preferably, the center of one end of the elastic body, which is close to the magnetic induction component, is fixedly connected with a valve plate.

Preferably, the valve plate is made of a zinc oxide material.

Preferably, the voltage sensors are electrically connected with the conduction pins through wires, so that the conduction pins can feed back voltage signals to the voltage sensors conveniently.

The utility model has the following beneficial effects:

1. according to the overvoltage protection device, the two overvoltage protection device bodies are symmetrically arranged in the protection shell, the overvoltage protection device bodies are provided with the plurality of magnetic induction components, when a circuit normally works, only one group of magnetic induction components are connected with the electrifying component through the conducting pins and conducted in the circuit, and once the voltage sensor detects that the voltage value in the circuit exceeds a preset value, the voltage control element controls the rest groups of magnetic induction components which are not switched on to be electrified so as to be switched into the circuit, so that the voltage in the circuit has the functions of voltage division and voltage reduction;

2. according to the utility model, through the multiple groups of magnetic induction assemblies, the multiple groups of conduction pins, the multiple groups of electrifying assemblies, the conducting plates, the voltage control elements and the voltage sensors which are arranged on the protective shell, the voltage values in the circuit can be detected in real time, once voltage overload is detected, voltage division and reduction are carried out immediately, the real-time performance is strong, the detection performance is sharp, the overvoltage prevention capability is excellent, and the safety of the circuit is effectively ensured;

3. according to the overvoltage protection device, the two heat dissipation fans are arranged in the protection shell, when the voltage in a circuit rises, the overvoltage protection device body can generate high temperature due to voltage overload, the overvoltage protection device body is cooled through the two heat dissipation fans, the overvoltage protection device body can be protected from being damaged easily, the service life of the overvoltage protection device body is prolonged, and the use safety is improved.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front sectional view of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2.

In the figure: 1. mounting a plate; 2. a protective shell; 3. a wiring board; 4. covering; 5. a voltage regulating panel; 6. adjusting and controlling keys; 7. a digital display screen; 8. an overvoltage protection device body; 9. a magnetic induction component; 91. an iron core; 92. a coil; 10. conducting the pin; 11. a lead pile; 12. a power line; 13. an insulating sheet; 14. a conductive plate; 15. connecting sheets; 16. a power-on component; 161. an elastomer; 162. a valve plate; 17. a heat dissipation fan; 18. a voltage control element; 19. a voltage sensor.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

Referring to fig. 1, an overvoltage protection device comprises a mounting plate 1, a protective case 2 is welded at the center of the front end of the mounting plate 1, the protective case 2 is used for mounting an overvoltage protection device body 8, a plurality of wiring boards 3 are welded at the rear ends of the two sides of the outer wall of the protective case 2, the wiring boards 3 are used for connecting the protective case 2 in a circuit, a buckle cover 4 is fixedly connected at the center of the front end of the protective case 2, the buckle cover 4 is used for protecting the inside of the protective case 2, a voltage regulating panel 5 is mounted at the bottom of one side of the center of the front end of the buckle cover 4, the voltage regulating panel 5 is used for regulating a voltage control element 18, the voltage regulating panel 5 is electrically connected with the voltage control element 18 through a wire, so that the voltage control element 18 can receive signals sent by the voltage regulating panel 5, a regulating button 6 is mounted at the bottom of one side of the center of the front end of the buckle cover 4, which is far away from the voltage regulating panel 5, and the regulating button 6 is used for setting a safe voltage value, the top of the center of the front end of the buckle cover 4 is embedded with the digital display screen 7, the digital display screen 7 is used for displaying a voltage value, and the digital display screen 7 is electrically connected with the voltage sensor 19 through a wire, so that the voltage sensor 19 can feed the voltage value back to the digital display screen 7 conveniently;

referring to fig. 2, two sides of the center of the rear end of the inner wall of the protective case 2 are fixedly connected with an overvoltage protection device body 8, the overvoltage protection device body 8 is used for performing power-off or voltage-reduction protection when a voltage in a circuit is overloaded, the centers of the inner walls of the two overvoltage protection device bodies 8 are uniformly provided with a plurality of magnetic induction assemblies 9, the magnetic induction assemblies 9 are used for switching on or switching off the circuit, the top and the bottom of the center of the inner wall of the protective case 2 are fixedly connected with heat dissipation fans 17, the heat dissipation fans 17 are used for dissipating heat inside the protective case 2, the top of the center of the rear end of the protective case 2 is fixedly connected with a voltage control element 18, the voltage control element 18 is used for controlling connection and disconnection of a plurality of power-on assemblies 16, the centers of the inner walls of the two overvoltage protection device bodies 8 are uniformly provided with a plurality of voltage sensors 19, the voltage sensors 19 are used for detecting a voltage value and feeding back to the voltage control element 18, and the plurality of voltage sensors 19 are electrically connected with the conduction pins 10 through wires, therefore, the pins 10 can be conducted to feed back voltage signals to the voltage sensor 19 conveniently, the plurality of lead piles 11 are uniformly welded at the rear ends of the two sides of the inner wall of the protective shell 2, the plurality of lead piles 11 are used for connecting the wiring board 3 with the overvoltage protection device body 8, the plurality of lead piles 11 and the overvoltage protection device body 8 are fixedly connected through the power wire 12, and the power wire 12 and the lead piles 11 are connected in a winding mode, so that the wiring stability can be guaranteed;

referring to fig. 3, an insulation sheet 13 is fixedly connected to the center of the rear end of the protective case 2, the insulation sheet 13 is used to prevent the conductive plate 14 from short-circuiting, a conductive plate 14 is fixedly connected to the center of the front end of the insulation sheet 13, the conductive plate 14 is used to conduct the magnetic sensing assemblies 9 on both sides, connection sheets 15 are welded to the top and bottom of both sides of the conductive plate 14, the connection sheets 15 are used to mount conductive assemblies 16, one sides of the connection sheets 15 and the conductive plate 14, which are close to the magnetic sensing assemblies 9, are fixedly connected with conductive assemblies 16, two conductive assemblies 16 of the conductive assemblies 16 are in a joint state with the conductive pins 10 under normal conditions, when the voltage value in the circuit is too high, one or two conductive assemblies 16 are connected to divide the voltage according to the actual voltage value, the conductive assemblies 16 include an elastic body 161 and a valve plate 162, the elastic body 161 can separate the valve plate 162 from the conductive pins 10 when the magnetic sensing assemblies 9 are powered off, form overvoltage protection, the elastomer 161 is close to the center fixedly connected with valve block 162 of magnetism and feels subassembly 9 one end, valve block 162 is made by the zinc oxide material, magnetism feels subassembly 9 including iron core 91 and coil 92, iron core 91 can produce magnetic field when coil 92 circular telegram, and carry out the actuation to circular telegram subassembly 16 through leading on pin 10, the outer wall of iron core 91 evenly twines there is coil 92, the equal fixedly connected with of one side that a plurality of magnetism sense subassemblies 9 kept away from the protective housing 2 inner wall leads on pin 10, lead on pin 10 is used for carrying out electric connection with circular telegram subassembly 16.

When the overvoltage protection device is used, the protective shell 2 is connected into a circuit through the wiring boards 3, only one group of magnetic induction assemblies 9 are connected with the power-on assemblies 16 through the conducting pins 10 when the voltage of the circuit is in a normal range, the voltage control element 18 can control the power-on and power-off states of the magnetic induction assemblies 9, when the voltage sensor 19 detects that the voltage value in the circuit exceeds the normal range, the voltage control element 18 conducts power on the two groups of magnetic induction assemblies 9 which are not connected according to the voltage increasing degree, the other two groups of magnetic induction assemblies 9 are connected with the power-on assemblies 16 through the conducting pins 10, the magnetic induction assemblies 9 are connected into the circuit, and voltage reduction and voltage division protection is performed on the circuit; when voltage seriously exceeds normal voltage, the voltage control element 18 controls the whole outage of the multiple groups of magnetic induction assemblies 9 to protect the circuit from power failure, and when the overvoltage protection device body 8 causes the temperature of the elements per se to rise due to overvoltage, the two heat dissipation fans 17 dissipate heat to prevent the overvoltage protection device body 8 from being damaged.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An overvoltage protection device comprises a mounting plate (1), and is characterized in that: the protective shell (2) is welded at the center of the front end of the mounting plate (1), a plurality of wiring boards (3) are welded at the rear ends of two sides of the outer wall of the protective shell (2), a buckle cover (4) is fixedly connected to the center of the front end of the protective shell (2), a pressure regulating panel (5) is installed at the bottom of one side of the center of the front end of the buckle cover (4), a regulating button (6) is installed at the bottom of one side of the center of the front end of the buckle cover (4) far away from the pressure regulating panel (5), and a digital display screen (7) is embedded at the top of the center of the front end of the buckle cover (4);

overvoltage protection device bodies (8) are fixedly connected to two sides of the center of the rear end of the inner wall of the protective shell (2), a plurality of magnetic induction assemblies (9) are uniformly mounted in the centers of the inner walls of the two overvoltage protection device bodies (8), and conducting pins (10) are fixedly connected to one sides, far away from the inner wall of the protective shell (2), of the magnetic induction assemblies (9);

a plurality of lead piles (11) are uniformly welded at the rear ends of two sides of the inner wall of the protective shell (2), and the lead piles (11) are fixedly connected with the overvoltage protection device body (8) through power lines (12);

an insulation sheet (13) is fixedly connected to the center of the rear end of the protective shell (2), a conductive plate (14) is fixedly connected to the center of the front end of the insulation sheet (13), connecting sheets (15) are welded to the top and the bottom of two sides of the conductive plate (14), and an electrifying assembly (16) is fixedly connected to one side, close to the magnetic induction assembly (9), of each of the connecting sheets (15) and the conductive plate (14);

the top and the bottom of the center of the inner wall of the protective shell (2) are both fixedly connected with heat dissipation fans (17), and the top of the center of the rear end of the protective shell (2) is fixedly connected with a voltage control element (18);

and a plurality of voltage sensors (19) are uniformly arranged at the centers of the inner walls of the two overvoltage protection device bodies (8).

2. An overvoltage protection device according to claim 1, characterized in that: the voltage regulating panel (5) is electrically connected with the voltage control element (18) through a lead.

3. An overvoltage protection device according to claim 1, characterized in that: the digital display screen (7) is electrically connected with the voltage sensor (19) through a lead.

4. An overvoltage protection device according to claim 1, characterized in that: the magnetic induction assembly (9) comprises an iron core (91) and a coil (92).

5. An overvoltage protection device according to claim 4, wherein: and the outer wall of the iron core (91) is uniformly wound with coils (92).

6. An overvoltage protection device according to claim 1, characterized in that: the power line (12) is connected with the lead pile (11) in a winding manner.

7. An overvoltage protection device according to claim 1, characterized in that: the energizing assembly (16) comprises an elastic body (161) and a valve plate (162).

8. An overvoltage protection device according to claim 7, wherein: the center of one end of the elastic body (161) close to the magnetic induction component (9) is fixedly connected with a valve plate (162).

9. An overvoltage protection device according to claim 8, wherein: the valve plate (162) is made of a zinc oxide material.

10. An overvoltage protection device according to claim 1, characterized in that: the voltage sensors (19) are electrically connected with the conducting pins (10) through conducting wires.