CN219575547U - Low residual voltage overvoltage protection device - Google Patents

Abstract

The utility model discloses a low residual voltage overvoltage protection device, which comprises a shell, heat conducting plates and a sliding plate, wherein the side wall of the shell is provided with a sliding groove, the top of the shell is provided with air holes communicated with the sliding groove, two heat conducting plates are symmetrically arranged in the sliding groove and are slidably connected to the bottom of the sliding groove, two wires respectively penetrate through the two heat conducting plates and are mutually connected, a fuse and a spring are connected between the two heat conducting plates, the spring is in a compressed state, the heat conducting plates are made of heat conducting metal, when the voltage of the wires is too high, heat is conducted to the heat conducting plates and melts the fuse, the spring rebounds to push the two heat conducting plates to drive the two wires to be separated and disconnected rapidly, and the structure is simple, so that potential safety hazards caused by false contact can be prevented.

Description

Low residual voltage overvoltage protection device

Technical Field

The utility model relates to the technical field of an over-voltage protection device, in particular to a low-residual voltage over-voltage protection device.

Background

The overvoltage protector is used for protecting various electrical equipment in the power system from damage caused by lightning overvoltage, operation overvoltage and power frequency transient overvoltage. The overvoltage protector is connected between the cable and ground, typically in parallel with the protected equipment. When the device is operated at normal operating voltage, the lightning arrester will not function and is considered to be open circuit to the ground. Once a high voltage occurs and the insulation of the protected equipment is compromised, the arrester acts immediately, directing the high voltage surge current to ground, limiting the voltage amplitude and protecting the equipment insulation.

Most of the existing over-current protection devices have complex structures, do not have protection structures, and are easy to mistakenly touch to cause potential safety hazards.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

The present utility model has been made in view of the above and/or problems occurring in the prior art of a low residual voltage overvoltage protection device.

Therefore, the utility model aims to provide a low residual voltage overvoltage protection device, through arranging a chute on the side wall of a shell, arranging ventilation holes communicated with the chute on the top of the shell, symmetrically arranging two heat conducting fins in the chute, slidably connecting the two heat conducting fins at the bottom of the chute, respectively penetrating the two heat conducting fins and mutually connecting the two heat conducting fins, connecting a fuse and a spring between the two heat conducting fins, wherein the spring is in a compressed state, the heat conducting fins are made of heat conducting metal materials, when the voltage of the heat conducting wires is too high, heat is conducted to the heat conducting fins and melts the fuse, and the spring rebounds to push the two heat conducting fins to drive the two heat conducting fins to be separated and disconnected rapidly, so that the structure is simple and potential safety hazards caused by false touch can be prevented.

In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

a low residual voltage overvoltage protection device, comprising:

the shell is provided with a sliding groove at the side part, the top of the shell is provided with a heat dissipation hole, and the heat dissipation hole is communicated with the sliding groove;

the heat conducting plates are symmetrically arranged at the bottoms of the sliding grooves, the side walls of the heat conducting plates are provided with wires, one ends of the wires are connected with each other, a fuse is connected between the two heat conducting plates, and a first spring is further connected between the two heat conducting plates.

As a preferable scheme of the low residual voltage overvoltage protection device, the symmetrical side walls of the shell are provided with guide grooves communicated with the sliding grooves.

As a preferable scheme of the low residual voltage overvoltage protection device, the low residual voltage overvoltage protection device further comprises a sliding plate, wherein the sliding plate is positioned at the top of the sliding groove, bristles are symmetrically arranged on the sliding plate up and down, guide blocks are arranged on the symmetrical side walls of the sliding plate, and the guide blocks penetrate through and extend out of the guide grooves.

As a preferable scheme of the low residual voltage overvoltage protection device, the side wall of the shell is symmetrically provided with two fixing plates by taking the guide groove as a center, one of the fixing plate side walls is provided with a motor, the output end of the motor penetrates through the side wall of the fixing plate and is provided with a threaded rod, one of the guide block side walls is provided with an ear plate, the side wall of the ear plate is provided with a threaded hole, and the threaded rod penetrates through the threaded hole in a rotating mode.

As a preferable scheme of the low residual voltage overvoltage protection device, a rack is arranged on the other side wall of the shell at a position below the guide groove.

As an optimal scheme of the low residual voltage overvoltage protection device, a gear is arranged on the side wall of the other guide block, the gear is meshed with the rack, and fan blades are arranged on the side wall of the gear.

Compared with the prior art: through seting up the spout at the casing lateral wall, the bleeder vent with spout intercommunication has been seted up at the casing top, the inside symmetry of spout is provided with two conducting strips, two conducting strips slidable connection is in the spout bottom, two wires pass two conducting strips respectively and interconnect, be connected with fuse and spring between two conducting strips, the spring is in compression state, the conducting strip is heat conduction metal material, when wire voltage is too high, heat conduction is to the conducting strip and melt the fuse, the spring resilience promotes two conducting strips and drives two wire quick separation disconnection, simple structure also can prevent the potential safety hazard that the mistake touched and cause.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following detailed description will be given with reference to the accompanying drawings and detailed embodiments, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. Wherein:

FIG. 1 is a diagram showing the overall structure of a low residual voltage overvoltage protection device according to the present utility model;

FIG. 2 is a partial block diagram of a low residual voltage overvoltage protection device according to the utility model;

FIG. 3 is a partial block diagram of a low residual voltage overvoltage protection device according to the utility model;

fig. 4 is a partial structural view of a low residual voltage overvoltage protection device according to the present utility model.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

Next, the present utility model will be described in detail with reference to the drawings, wherein the sectional view of the device structure is not partially enlarged to general scale for the convenience of description, and the drawings are only examples, which should not limit the scope of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

The utility model provides a low residual voltage overvoltage protection device, which is characterized in that a chute is formed in the side wall of a shell, an air hole communicated with the chute is formed in the top of the shell, two heat conducting fins are symmetrically arranged in the chute and slidably connected to the bottom of the chute, two wires respectively penetrate through the two heat conducting fins and are mutually connected, a fuse and a spring are connected between the two heat conducting fins, the spring is in a compressed state, the heat conducting fins are made of heat conducting metal materials, when the voltage of the wires is too high, heat is conducted to the heat conducting fins and melts the fuse, the spring rebounds to push the two heat conducting fins to drive the two wires to be rapidly separated and disconnected, and the structure is simple, so that potential safety hazards caused by false touch can be prevented.

Fig. 1 to 4 are schematic structural views showing an embodiment of a low residual voltage overvoltage protection device according to the present utility model, referring to fig. 1 to 4, the low residual voltage overvoltage protection device of the present embodiment includes a housing 100, a heat conducting plate 200 and a sliding plate 300.

The spout 110 has been seted up to casing 100 lateral part, the louvre 120 has been seted up at casing 100 top, the guide way 130 with spout 110 intercommunication has been seted up to casing 100 symmetry lateral wall, the rack 170 is installed to another lateral wall of casing 100 below guide way 130, two fixed plates 140 are installed to casing 100 lateral wall symmetry about guide way 130 as the center, motor 150 is installed to one of them fixed plate 140 lateral wall, motor 150 output runs through and stretches out fixed plate 140 lateral wall and installs threaded rod 160, threaded rod 160 other end is connected to another fixed plate 140 lateral wall through the bearing, casing 100 is used for protecting inside heat conduction board 200 and wire 210, prevent that the mistake from touching and causing the potential safety hazard, simultaneously louvre 120 can be through accelerating the inside and external air circulation of louvre 120, increase radiating efficiency.

The two heat conducting plates 200 are symmetrically arranged at the bottom of the chute 110, the side walls of the two heat conducting plates 200 are provided with wires 210, one end parts of the two wires 210 are connected with each other, a fuse 220 is connected between the two heat conducting plates 200, a first spring 230 is also connected between the two heat conducting plates 200, not shown in the figure, a guide groove is formed at the bottom of the chute 110, a guide block is arranged at the position, corresponding to the guide groove, of the bottom of the heat conducting plate 200, the heat conducting plates 200 are connected at the bottom of the chute 110 and can slide along the bottom of the chute 110, the heat conducting plates 200 are made of heat conducting metal, when the voltage of the two wires 210 is too high, the heat of the wires 210 is increased, the heat is conducted to the heat conducting plates 200, the fuse 220 is heated and melted through the heat conducting plates 200, and after the fuse 220 is melted, the first spring 230 rebounds to push the two heat conducting plates 200 to be quickly separated and disconnected, so that an over-current protection structure is formed.

The slide plate 300 is located at the top of the slide groove 110, the brush hair 310 is symmetrically installed up and down on the slide plate 300, the guide block 320 is installed on the symmetrical side wall of the slide plate 300, the guide block 320 penetrates through the guide groove 130, the lug plate 330 is installed on the side wall of one guide block 320, the threaded hole 340 is formed in the side wall of the lug plate 330, the threaded rod 160 rotates to penetrate through the threaded hole 340, the gear 350 is installed on the side wall of the other guide block 320, the gear 350 is meshed with the rack 170, the fan blade 360 is installed on the side wall of the gear 350, the threaded rod 160 is driven to rotate by the starting motor 150, the threaded rod 160 is driven to rotate by the lead screw structure, the lug plate 330 drives the guide block 320 and the slide plate 300 to reciprocate in the slide groove 110, the brush hair 310 is driven to rub against the tops of the heat dissipation holes 120 and the heat conduction plate 200, dust blocked in the heat dissipation holes 120 and attached to the tops of the heat conduction plate 200 is cleaned, the dust is prevented from affecting the heat dissipation efficiency of the heat dissipation holes 120 and the heat conduction efficiency of the heat conduction plate 200, the gear 350 is connected to the side wall of the guide block 320 through a bearing, when the slide plate 300 moves, the gear 350 drives the gear 350 to move, the gear 350 is meshed with the rack 170, when moving, the gear 350 rotates, the fan blade 360 is driven to rotate, the fan blade 100 moves towards the direction of the casing 100, when the fan blade 100, the fan blade is generated, when the fan blade is rotated, and the fan blade is driven to move, and the fan blade airflow moves, and the direction towards the direction of the casing 100, and the direction, and the air flow is blown down towards the direction, and the air flow through the inside through the guide groove 130, and the air flow through the guide groove 130.

Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (6)

1. A low residual voltage overvoltage protection device, comprising:

the shell (100), the side of the shell (100) is provided with a chute (110), the top of the shell (100) is provided with a heat dissipation hole (120), and the heat dissipation hole (120) is communicated with the chute (110);

the heat conducting plates (200), the heat conducting plates (200) are two and symmetrically located in the bottoms of the sliding grooves (110), the side walls of the heat conducting plates (200) are provided with conducting wires (210), one end portions of the conducting wires (210) are connected with each other, a fuse (220) is connected between the two heat conducting plates (200), and a first spring (230) is further connected between the two heat conducting plates (200).

2. The low residual voltage overvoltage protection device according to claim 1, wherein the symmetrical side walls of the housing (100) are provided with guide grooves (130) communicating with the chute (110).

3. The low residual voltage overvoltage protection device according to claim 2, further comprising a sliding plate (300), wherein the sliding plate (300) is located at the top of the sliding groove (110), bristles (310) are symmetrically installed on the sliding plate (300) up and down, guide blocks (320) are installed on symmetrical side walls of the sliding plate (300), and the guide blocks (320) penetrate through and extend out of the guide grooves (130).

4. A low residual voltage overvoltage protection device according to claim 3, characterized in that the side wall of the casing (100) is symmetrically provided with two fixing plates (140) with the guide groove (130) as a center, one of the fixing plates (140) is provided with a motor (150), the output end of the motor (150) penetrates through the side wall of the fixing plate (140) and is provided with a threaded rod (160), one of the guide blocks (320) is provided with an ear plate (330), the side wall of the ear plate (330) is provided with a threaded hole (340), and the threaded rod (160) penetrates through the threaded hole (340) in a rotating mode.

5. The low residual voltage overvoltage protection device according to claim 4, wherein a rack (170) is mounted on the other side wall of the housing (100) at a position below the guide groove (130).

6. The low residual voltage protection device according to claim 5, wherein a gear (350) is mounted on a side wall of the other guide block (320), the gear (350) is meshed with the rack (170), and a fan blade (360) is mounted on a side wall of the gear (350).