CN216672340U

CN216672340U - Low-voltage switchgear cable chamber ventilation structure

Info

Publication number: CN216672340U
Application number: CN202122955987.0U
Authority: CN
Inventors: 邓宗杰
Original assignee: Hunan Zhijiang Mangtangxi Water Conservancy And Hydropower Development Co ltd
Current assignee: Hunan Zhijiang Mangtangxi Water Conservancy And Hydropower Development Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-06-03
Anticipated expiration: 2031-11-29

Abstract

The utility model relates to a ventilation structure of a cable chamber of a low-voltage switch cabinet, which comprises a rear door plate arranged in the cable chamber of the switch cabinet, and an axial flow fan and a pressure relief opening which are arranged at the top of the switch cabinet and communicated with the cable chamber; the back door plant includes door plant body, outer shrouding and valve, the vent has been seted up on the door plant body, outer shrouding shutoff the coincide with the vent install in the outside of door plant body, just outer shrouding with be equipped with the cavity between the door plant body, the both sides of outer shrouding are equipped with a plurality of ventilation holes, two the valve is located symmetrically in the cavity and articulate in outer shrouding, but the valve shutoff ventilation hole and vent between the cavity. The ventilation structure designed by the utility model can push the valve through high-pressure gas generated due to faults in the cable chamber, so that the valve blocks a cavity between the ventilation hole and the ventilation opening, and the high-temperature high-pressure gas is prevented from being sprayed to the outside of the switch cabinet and causing serious harm to surrounding people and other equipment.

Description

Low-voltage switchgear cable chamber ventilation structure

Technical Field

The utility model relates to the technical field of heat dissipation of switch cabinets, in particular to a ventilation structure of a cable chamber of a low-voltage switch cabinet.

Background

The existing low-voltage switch cabinet can not solve the heat dissipation problem well by means of natural cooling, and a forced air cooling heat dissipation scheme is developed. The traditional forced air cooling method comprises the following steps: the rear door plate of the switch cabinet is additionally provided with heat dissipation holes so that cold air can enter the switch cabinet; and meanwhile, an axial flow fan is arranged on a top plate of the switch cabinet and used for discharging the rising hot air out of the switch cabinet. The traditional forced air cooling heat dissipation mode has the following defects:

too many louvres have been seted up on the door plant behind the cubical switchboard, and the high temperature high pressure gas that produces when breaking down in the cable chamber can spray outside the cubical switchboard through above-mentioned louvre, produces serious harm to personnel and other equipment around.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems in the prior art and provides a cable chamber ventilation structure of a low-voltage switch cabinet.

The technical scheme adopted by the utility model for solving the technical problem is as follows:

the cable chamber ventilation structure of the low-voltage switch cabinet comprises a rear door plate arranged in a cable chamber of the switch cabinet, and an axial flow fan and a pressure relief opening which are arranged at the top of the switch cabinet and communicated with the cable chamber; the back door plant includes door plant body, outer shrouding and valve, the vent has been seted up on the door plant body, outer shrouding shutoff the coincide with vent install in the outside of door plant body, just outer shrouding with be equipped with the cavity between the door plant body, the both sides of outer shrouding are equipped with a plurality of ventilation holes, two the valve is located symmetrically in the cavity and articulate in outer shrouding, but the valve shutoff between ventilation hole and the vent the cavity.

In a preferred embodiment of the cable chamber ventilation structure of the low-voltage switch cabinet, the height of the valve is matched with that of the cavity.

In a preferred embodiment of the cable chamber ventilation structure of the low-voltage switch cabinet, the valve comprises a valve body, a hinge shaft and a tension spring, one end of the valve body is arranged opposite to the ventilation opening, the other end of the valve body is provided with a blocking plate, the hinge shaft is arranged on the valve body and is hinged with a hinge seat of the outer sealing plate, one end of the tension spring is connected with the outer sealing plate, and the other end of the tension spring is connected with the bottom of one end, close to the blocking plate, of the valve body.

In a preferred embodiment of the cable chamber ventilation structure of the low-voltage switch cabinet, the valve body comprises a first horizontal plate, an inclined connecting plate and a second horizontal plate which are sequentially connected, and the blocking plate is formed by bending the first horizontal plate by 90 degrees.

In a preferred embodiment of the cable chamber ventilation structure of the low-voltage switch cabinet, two sides of the outer sealing plate are provided with inclined surface structures, and the ventilation hole is formed in the inclined surface.

In a preferred embodiment of the cable chamber ventilation structure of the low-voltage switch cabinet, the ventilation opening is provided with a movable shutter.

Compared with the prior art, the low-voltage switch cabinet cable chamber ventilation structure provided by the utility model has the beneficial effects that: according to the ventilation structure of the rear door plate of the cable chamber, when the cable chamber breaks down to generate high-temperature and high-pressure gas, the valve can be pushed by the high-pressure gas in the cable chamber, so that the valve plugs a cavity (namely an air inlet channel) between the vent hole and the vent hole, the high-pressure gas can be discharged only from the pressure relief opening at the top of the switch cabinet, and the high-temperature and high-pressure gas is prevented from being sprayed to the outside of the switch cabinet and causing serious harm to surrounding personnel and other equipment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic structural diagram of a low-voltage switchgear provided by the present invention;

FIG. 2 is a schematic cross-sectional structure diagram of a rear door panel of a cable chamber of a low-voltage switch cabinet provided by the utility model;

FIG. 3 is a schematic structural diagram of a shutter of a rear door panel of the cable chamber provided in FIG. 2 for blocking an air inlet channel;

fig. 4 is a front view of the door panel body provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

The embodiment provides a ventilation structure for a cable chamber of a low-voltage switch cabinet, as shown in fig. 1, the ventilation structure comprises a rear door panel 1 arranged in the cable chamber of the switch cabinet, an axial flow fan 2 and a pressure relief opening (not shown in the figure), wherein the axial flow fan is arranged at the top of the switch cabinet and communicated with the cable chamber, the axial flow fan is used as a power part for forced ventilation of the switch cabinet, and the pressure relief opening is used for pressure relief of the cable chamber of the switch cabinet. In order to solve the problem that high-temperature and high-pressure gas generated when a cable chamber of a traditional low-voltage switch cabinet breaks down can be sprayed out of the switch cabinet through heat dissipation holes in a back door panel, and seriously harms surrounding people and other equipment, the embodiment designs a novel back door panel, as shown in fig. 2 and fig. 3, the back door panel 1 of the embodiment comprises a door panel body 101, an outer sealing plate 102 and a valve 103, a vent 1010 is arranged on the door panel body 101, the function of the vent 1010 is the same as that of the heat dissipation holes in the traditional back door panel, cold air enters the switch cabinet through the vent, the outer sealing plate 102 is arranged outside the door panel body 101 in an overlapped mode for sealing the vent 1010, a cavity 100 is arranged between the outer sealing plate 102 and the door panel body 101 and can be used as an air inlet channel, a plurality of vent holes 1020 are arranged on two sides of the outer sealing plate 102, the two valves 103 are symmetrically arranged in the cavity 100 and hinged to the outer sealing plate 102, the cavity 100 between the vent hole 1020 and the vent hole 1010 can be plugged by the valve 103, when a cable chamber fails to generate high-temperature and high-pressure gas, the valve can be pushed by the high-pressure gas in the cable chamber, and then the valve plugs the cavity (namely an air inlet channel) between the vent hole and the vent hole, so that the high-pressure gas can only be discharged from a pressure relief opening at the top of the switch cabinet.

Preferably, the height of the shutter 103 is matched with the height of the cavity 100, so that the shutter can completely block the cavity between the vent hole and the ventilation opening.

Example two

On the basis of the first embodiment, the present embodiment further designs the valve, as shown in fig. 2 and fig. 3, the valve 103 of the present embodiment includes a valve body 1031, a hinge shaft 1032 and a tension spring 1033, one end of the valve body 1031 is disposed opposite to the vent 1010, the other end of the valve body 1031 is provided with a blocking plate 1034, the hinge shaft 1032 is disposed on the valve body 1031 and is hinged to a hinge seat of the outer sealing plate 102, one end of the tension spring 1033 is connected to the outer sealing plate 102, the other end of the tension spring is connected to a bottom of an end close to the valve body 1031 and close to the blocking plate 1034, when a cable chamber generates high-temperature and high-pressure gas due to a fault, the high-temperature and high-pressure gas acts on one end of the valve body through the vent, under the action of the hinge shaft, the other end of the valve body will act by using a lever principle, so that the blocking plate blocks a cavity (i.e. an air inlet passage) between the vent and the vent, thereby blocking the air inlet channel, as shown in figure 3, avoiding the high-temperature and high-pressure gas from being sprayed from the vent hole to cause serious harm to surrounding personnel and other equipment; and a normal state, as shown in fig. 2.

Preferably, the shutter body 1031 of the present embodiment includes a first horizontal plate a, an inclined connecting plate B and a second horizontal plate C, which are sequentially connected, and the blocking plate 1034 is formed by bending the first horizontal plate a90 °.

EXAMPLE III

On the basis of the first or second embodiment, both sides of the outer sealing plate 102 of this embodiment are provided with inclined surfaces, and the ventilation holes 1020 are provided on the inclined surfaces, so that the design is beautiful.

Example four

Based on any of the above-mentioned embodiment, this embodiment install movable tripe 3 on the vent 1010, the direction of admitting air can be adjusted in the setting of movable tripe, can admit air the direction to the different positions of cable chamber, is convenient for adjust the indoor air current of cable, and the radiating effect is better.

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, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a low tension switchgear cable chamber ventilation structure, is including locating the back door plant of cubical switchboard cable chamber and locating axial fan and the pressure release mouth that cubical switchboard top and cable chamber are linked together, its characterized in that: the back door plant includes door plant body, outer shrouding and valve, the vent has been seted up on the door plant body, outer shrouding shutoff the coincide with vent install in the outside of door plant body, just outer shrouding with be equipped with the cavity between the door plant body, the both sides of outer shrouding are equipped with a plurality of ventilation holes, two the valve is located symmetrically in the cavity and articulate in outer shrouding, but the valve shutoff between ventilation hole and the vent the cavity.

2. The low-voltage switchgear cable compartment ventilation structure of claim 1, characterized in that: the height of the valve is matched with that of the cavity.

3. The low-voltage switchgear cable compartment ventilation structure of claim 2, characterized in that: the valve comprises a valve body, a hinged shaft and a tension spring, wherein one end of the valve body is opposite to the ventilation opening, the other end of the valve body is provided with a blocking plate, the hinged shaft is arranged on the valve body and is hinged with a hinged seat of the outer sealing plate, one end of the tension spring is connected with the outer sealing plate, and the other end of the tension spring is connected and close to the bottom of one end, close to the blocking plate, of the valve body.

4. A low-voltage switchgear cable chamber ventilation structure as claimed in claim 3, characterized in that: the valve body comprises a first horizontal plate, an inclined connecting plate and a second horizontal plate which are sequentially connected, and the blocking plate is formed by bending the first horizontal plate by 90 degrees.

5. The low-voltage switchgear cable compartment ventilation structure of claim 1, characterized in that: the both sides of outer shrouding are established to the inclined plane structure, the ventilation hole is located on the inclined plane.

6. The low-voltage switchgear cable compartment ventilation structure of claim 1, characterized in that: the ventilation opening is provided with movable shutters.