CN212392498U - Low-voltage power distribution cabinet with protection device - Google Patents

Abstract

The utility model relates to a switch board technical field just discloses a low-voltage distribution cabinet with protection device, which comprises a power distribution cabinet, the symmetry is provided with the heat-conducting plate on the inside wall of switch board, one side lateral wall of heat-conducting plate is provided with trigger mechanism, be provided with the U-shaped casing on the outside lateral wall of switch board, be provided with a plurality of cooling tubes that have in the U-shaped casing, the one end and the heat-conducting plate fixed connection setting of cooling tube. This low-voltage distribution cabinet with protection device, through this kind of mode of setting up, even the heat that produces in comparatively hot weather or switch board is many, can stand immediately and improve the heat-sinking capability of switch board, guarantee that the inside of switch board can not last high temperature, protected the electric elements and the circuit of switch board, adjust the start-up of fan in real time according to the inside temperature of switch board simultaneously, avoided the fan to move always and caused unnecessary waste of the energy.

Description

Low-voltage power distribution cabinet with protection device

Technical Field

The utility model relates to a switch board technical field specifically is a low-voltage distribution cabinet with protection device.

Background

The distribution cabinet is a final-stage device of a distribution system. The power distribution cabinet is a general name of a motor control center. The power distribution cabinet is used in the occasions with dispersed loads and less loops; the motor control center is used for occasions with concentrated loads and more loops. They distribute the power of a certain circuit of the upper-level distribution equipment to the nearby loads. This level of equipment should provide protection, monitoring and control of the load.

Present outdoor switch board, in daily use, steam is being flooded in the air, these steam can enter into inside the switch board through the thermovent, steam can influence the inside electrical elements of switch board, can cause the circuit short circuit, this can bring the damage for the switch board, current switch board is through the fan radiating simultaneously, and the fan is under the state of running always, when during autumn and winter, perhaps when the switch board heats the degree not high, the inside temperature of switch board is not high, at this moment the operation of fan will cause unnecessary electric energy extravagant, so in order to solve above problem of proposing, we need a low voltage distribution cabinet who has protection device urgently.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a low-voltage distribution cabinet with protection device possesses advantages such as protection switch board, heat-sinking capability are adjustable, has solved the problem that the background art provided.

(II) technical scheme

For the purpose of realizing above-mentioned protection switch board, adjustable heat-sinking capability, the utility model provides a following technical scheme: the utility model provides a low-voltage distribution cabinet with protection device, includes the switch board, the symmetry is provided with the heat-conducting plate on the inside wall of switch board, one side lateral wall of heat-conducting plate is provided with trigger mechanism, be provided with the U-shaped casing on the outside lateral wall of switch board, be provided with a plurality of cooling tubes in the U-shaped casing, the one end and the heat-conducting plate fixed connection setting of cooling tube.

Preferably, the trigger mechanism is including the base, the base symmetry sets up on one side lateral wall of heat-conducting plate, fixedly connected with bimetallic strip on one side lateral wall of base, the one end fixedly connected with contact of bimetallic strip, be provided with travel switch on the lateral wall of heat-conducting plate, the contact is located one side position setting of travel switch's contact, be provided with the fan on the inboard lateral wall of U-shaped casing, the fan is located the setting of both ends position department of U-shaped casing, fan and travel switch electric connection set up.

Preferably, an opening is symmetrically formed in the side wall of one side of the U-shaped shell, and a filter screen is arranged on the side wall of the inner side of the opening.

Preferably, a plurality of radiating nets are arranged on the side wall of the outer side of the U-shaped shell, and the radiating nets are symmetrically arranged in the vertical direction of the radiating pipe.

Preferably, windward plates are symmetrically arranged on the inner side wall of the opening, and the windward plates are obliquely arranged on the inner side wall of the opening.

(III) advantageous effects

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. this low-voltage distribution cabinet with protection device, through the first sheetmetal that sets up, the second sheetmetal, parts such as travel switch and fan, when through the heat-conducting plate, the inside temperature of switch board is still very high when the conventional heat dissipation of cooling tube and radiator-grid these parts, when the temperature drops down, heat in the switch board just can make bimetallic strip be heated the inflation, at this moment bimetallic strip's one end can take place the bending, travel switch's contact will be touchd to the contact during bending, travel switch will be triggered in contact pushing travel switch's contact motion, thereby start the fan, the fan produces wind-force in the inside terminal surface department of U-shaped casing, wind makes the heat take over from the U-shaped casing more fast.

Through this kind of mode of setting up, even the heat that produces in comparatively hot weather or switch board is many, can stand immediately to improve the heat-sinking capability of switch board, guarantees that the inside of switch board can not last high temperature, has protected the electrical component and the circuit of switch board, adjusts the start-up of fan in real time according to the inside temperature of switch board simultaneously, has avoided the fan to operate always and has caused unnecessary waste of the energy.

2. This low-voltage distribution cabinet with protection device, through parts such as the heat-conducting plate that sets up, cooling tube and trigger mechanism, when dispelling the heat to inclosed switch board inside, the inside heat of switch board passes through the heat-conducting plate transmission, and the heat is distributed away by the cooling tube once more, and this kind of radiating mode has guaranteed that steam can not be random enters into the switch board in, can not cause the influence to the inside electric elements of switch board and circuit, has protected the inside spare part of switch board.

Drawings

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

FIG. 2 is a schematic view of the overall cross-sectional structure of the present invention;

FIG. 3 is a schematic structural view of the U-shaped housing, the heat dissipating tube and the components of the heat conducting plate of the present invention;

FIG. 4 is a schematic structural view of the U-shaped housing, heat-dissipating net, etc. of the present invention;

fig. 5 is an enlarged schematic view of a portion a in fig. 2.

In the figure: 1. a power distribution cabinet; 2. a heat conducting plate; 3. a U-shaped housing; 4. a radiating pipe; 5. a fan; 6. a base; 7. a bimetal; 8. a contact; 9. a travel switch; 10. an opening; 11. a heat-dissipating web; 12. a windward plate.

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 work belong to the protection scope of the present invention.

Example 1

Please refer to fig. 1-5, a low voltage power distribution cabinet with a protection device, including a power distribution cabinet 1, the inner side wall of the power distribution cabinet 1 is symmetrically provided with heat conducting plates 2, the door of the power distribution cabinet 1 is also provided with heat conducting plates 2, one side wall of the heat conducting plates 2 is provided with a trigger mechanism, the trigger mechanism includes a base 6, the base 6 is symmetrically arranged on one side wall of the heat conducting plates 2, one side wall of the base 6 is fixedly connected with a bimetallic strip 7, because the thermal expansion coefficients of the component layers are different, when the temperature changes, the deformation of the active layer is larger than the deformation of the passive layer, thereby the whole of the bimetallic strip 7 will bend to one side of the passive layer, and the curvature of the composite material changes to generate deformation. Wherein, the active layer with higher expansion coefficient is called as the active layer; the active layer is mainly made of manganese-nickel-copper alloy, nickel-chromium-iron alloy, nickel-manganese-iron alloy, nickel and the like; the passive layer is called with a low expansion coefficient, the material of the passive layer is mainly nickel-iron alloy, and the content of nickel is 34-50%.

One end of the bimetallic strip 7 is fixedly connected with a contact 8, and the contact 8 can touch and push the contact of the travel switch 9 when the bimetallic strip 7 is bent. The side wall of the heat conducting plate 2 is provided with a travel switch 9, the contact 8 is arranged at one side position of the contact of the travel switch 9, and the contact 8 can touch and push the contact of the travel switch 9 when the bimetallic strip 7 is bent. The fan 5 is arranged on the side wall of the inner side of the U-shaped shell 3, the fan 5 is arranged at the two ends of the U-shaped shell 3, the fan 5 is electrically connected with the travel switch 9, and the fan 5 can be started immediately when the contact of the travel switch 9 is triggered. The outer side wall of the power distribution cabinet 1 is provided with a U-shaped shell 3, an opening 10 is symmetrically formed in one side wall of the U-shaped shell 3, and the opening 10 is arranged to immediately discharge hot air out of the U-shaped shell 3.

The windward plates 12 are symmetrically arranged on the inner side wall of the opening 10, the windward plates 12 are obliquely arranged on the inner side wall of the opening 10, the oblique arrangement of the windward plates 12 is to facilitate the wind to be smoothly discharged out of the U-shaped shell 3, and the filter screen is arranged on the inner side wall of the opening 10 and prevents dust or winged insects from entering the U-shaped shell 3 in the field. Be provided with a plurality of radiator screens 11 on the lateral wall in the outside of U-shaped casing 3, radiator screen 11 is located the symmetry setting on the vertical direction of cooling tube 4, and such mode of setting is when the cooling tube 4 distributes away the heat, and it goes to the external world to distribute from in the U-shaped casing 3 faster. A plurality of radiating tubes 4 are arranged in the U-shaped shell 3, and one ends of the radiating tubes 4 are fixedly connected with the heat conducting plate 2.

The working principle is as follows: when the power distribution cabinet 1 is protected, the heat conducting plate 2 transmits the heat inside the power distribution cabinet 1 out of the power distribution cabinet 1, then the heat is radiated into the U-shaped shell 3 by the radiating pipe 4, the heat is discharged to the outside through outlets such as a radiating port and an opening 10, when the conventional radiating mode of the components such as the heat conducting plate 2, the radiating pipe 4 and the radiating net 11 is adopted, the internal temperature of the power distribution cabinet 1 is still high, the temperature cannot be reduced, the heat inside the power distribution cabinet 1 can cause the bimetallic strip 7 to thermally expand, one of the bimetallic strips can be bent due to the different expansion coefficients of the two bimetallic strips 7, the contact 8 of the bimetallic strip 7 can touch the contact of the travel switch 9, the contact 8 can push the contact of the travel switch 9 due to the continuous bending of the bimetallic strips, so as to trigger the travel switch 9, the fan 5 is started, and the fan 5 generates wind power at the internal end face of the U-shaped shell 3, when wind flows fast in the U-shaped shell 3, the heat dissipation of the heat dissipation pipe 4 can be accelerated, so that the heat dissipation capacity of the heat dissipation pipe 4 is improved, the heat can be taken out from the power distribution cabinet 1 more quickly, and the heat is blown out of the U-shaped shell 3 along with the wind.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a low-voltage distribution cabinet with protection device, includes switch board (1), its characterized in that: the heat-conducting plates (2) are symmetrically arranged on the inner side wall of the power distribution cabinet (1), and the side wall of one side of each heat-conducting plate (2) is provided with a trigger mechanism; be provided with U-shaped casing (3) on the lateral wall of switch board (1), be provided with a plurality of cooling tubes (4) that have in U-shaped casing (3), the one end and heat-conducting plate (2) fixed connection setting of cooling tube (4).

2. The low-voltage distribution cabinet with the protection device according to claim 1, characterized in that: trigger mechanism is including base (6), base (6) symmetry sets up on one side lateral wall of heat-conducting plate (2), fixedly connected with bimetallic strip (7) on one side lateral wall of base (6), one end fixedly connected with contact (8) of bimetallic strip (7), be provided with travel switch (9) on the lateral wall of heat-conducting plate (2), one side position setting that contact (8) are located the contact of travel switch (9), be provided with fan (5) on the inboard lateral wall of U-shaped casing (3), fan (5) are located the both ends position department setting of U-shaped casing (3).

3. The low-voltage distribution cabinet with the protection device according to claim 1, characterized in that: an opening (10) is symmetrically formed in the side wall of one side of the U-shaped shell (3), and a filter screen is arranged on the side wall of the inner side of the opening (10).

4. The low-voltage distribution cabinet with the protection device according to claim 1, characterized in that: be provided with a plurality of radiator-grids (11) on the lateral wall in the outside of U-shaped casing (3), radiator-grid (11) are located the vertical direction of cooling tube (4) and go up the symmetry setting.

5. The low-voltage distribution cabinet with the protection device according to claim 3, characterized in that: windward plates (12) are symmetrically arranged on the inner side wall of the opening (10), and the windward plates (12) are obliquely arranged on the inner side wall of the opening (10).

Images