CN113889877A

CN113889877A - Low-voltage switch cabinet with good protection performance

Info

Publication number: CN113889877A
Application number: CN202111037002.4A
Authority: CN
Inventors: 李兴伟; 李兴刚; 李兴三; 李鑫; 何庆英; 盛国杰; 李帅; 李浩然; 何坤澎
Original assignee: Linyi Shinaitong Electric Technology Co ltd
Current assignee: Linyi Shinaitong Electric Technology Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-01-04

Abstract

The invention relates to the technical field of low-voltage switch cabinets, in particular to a low-voltage switch cabinet with good protection performance, which comprises a base and a cabinet body, wherein the cabinet body is arranged at the top end of the base, the front side surface of the cabinet body is provided with a cabinet door, the top end of the cabinet body is provided with an opening, the top of the cabinet body is movably sleeved with an exhaust hood, the top of the inner cavity of the cabinet body is symmetrically provided with electric telescopic rods in the left and right directions, the electric telescopic rods are driven and connected with the exhaust hood, the scheme can increase the area of a heat dissipation channel to improve the heat dissipation capacity when the temperature in the cabinet is higher by designing the exhaust hood capable of being lifted, can simultaneously seal the heat dissipation channel in cold weather, reduce the intrusion of cold air into the cabinet and the heat emission in the cabinet, effectively improve the use stability of the switch cabinet, and further, the scheme also designs a front-back movable mounting rack which can stagger the front and back of adjacent electric equipment, the heat is dispersed, and the heat dissipation efficiency of the equipment is improved.

Description

Low-voltage switch cabinet with good protection performance

Technical Field

The invention relates to the technical field of low-voltage switch cabinets, in particular to a low-voltage switch cabinet with good protection performance.

Background

The high-low voltage switch cabinet is an electrical device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, and each branch is arranged according to the requirement. Such as instruments, automatic control, motor magnetic switches and various alternating current contactors, and the like, and also high-voltage chamber and low-voltage chamber switch cabinets, high-voltage buses, such as power plants and the like; some are also equipped with low cycle shedding to secure the primary equipment. The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system. At present, the components in the switch cabinet mainly comprise a circuit breaker, an isolating switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like. The classification methods of the switch cabinets are various, for example, the switch cabinets can be divided into movable switch cabinets and fixed switch cabinets by the installation mode of the circuit breaker; or according to different cabinet body structures, the cabinet body can be divided into an open type switch cabinet, a metal closed switch cabinet and a metal closed armored switch cabinet; the high-voltage switch cabinet, the medium-voltage switch cabinet, the low-voltage switch cabinet and the like can be divided according to different voltage grades. The method is mainly suitable for various occasions such as power plants, transformer substations, petrochemical industry, metallurgical steel rolling, light industrial textile, industrial and mining enterprises, residential districts, high-rise buildings and the like.

The existing low-voltage switch cabinet has the problems of poor heat dissipation effect in summer and insufficient heat preservation capability in winter, and faults are frequent when the low-voltage switch cabinet is used in places with large temperature difference in winter and summer. Based on this, this scheme has designed the low-voltage switchgear that barrier propterty is good to solve above-mentioned problem.

Disclosure of Invention

The invention aims to provide a low-voltage switch cabinet with good protection performance, and aims to solve the problems that the existing low-voltage switch cabinet has poor heat dissipation effect in summer and insufficient heat preservation capability in winter, and faults occur frequently when the existing low-voltage switch cabinet is used in places with large temperature difference in winter and summer in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a low-voltage switchgear that barrier propterty is good, includes the base and the cabinet body, the cabinet body is established on the base top, cabinet body leading flank is equipped with the cabinet door, cabinet body top opening, cabinet body top activity cover is equipped with the exhaust hood, cabinet body inner chamber top bilateral symmetry is equipped with electric telescopic handle, the exhaust hood is connected in the electric telescopic handle drive, carries out elevating movement through the control exhaust hood, reaches the effect of change exhaust passage area, the cabinet body inner chamber left and right sides all is equipped with movable mounting bracket around, and the crisscross distribution about the movable mounting bracket of front and back of both sides, cabinet body inner chamber upper portion bilateral symmetry is provided with the fan bedplate, install first fan on the fan bedplate, the lower part bilateral symmetry of the cabinet body is provided with the air inlet, install the filter screen in the air inlet, the inside of the cabinet body is provided with the temperature-sensing ware.

Preferably, the lower part of the inner cavity of the cabinet body is provided with an air drying assembly, and the inner side of the cabinet door is provided with an electric heating plate.

Preferably, the air drying component comprises a shell, the cross section of the shell is in an inverted isosceles trapezoid shape, two air inlet cavities are formed between the inclined planes at the two sides of the shell and the cabinet body, the air inlet is communicated with the air inlet cavities, a drying ball net layer is arranged at the bottom end of a top plate of the shell and comprises a plurality of layers which stretch out and draw back according to the same proportion, openings communicated with the drying ball net layer are formed in the top plate of the shell and used for replacing drying balls, two groups of second fans are symmetrically arranged in the left and right of the middle of the top surface of the shell and located in the coverage area of the drying ball net layer, and transverse air inlet pipes are uniformly distributed on the inclined planes at the two sides of the shell.

Preferably, the movable mounting bracket of front and back is including establishing the slide rail on the internal lateral wall of cabinet, the slide rail divide into relative two sets of from top to bottom, and slidable mounting has vertical mount between two sets of slide rails, vertical mount rear side middle part is connected with telescopic cylinder, a plurality of groups of horizontal mounting panel are installed at the interval on the front of vertical mount.

Preferably, the exhaust hood comprises a top cover plate, a protection coaming is arranged at the bottom end of the top cover plate, a square hood is arranged on the inner side of the protection coaming, the protection coaming is in an inverted square table shape, air outlet strips are uniformly distributed on four inclined surfaces of the protection coaming, an anti-drop flange is arranged on the inner periphery of a bottom opening of the square hood, and air outlet holes are distributed on the side surface of the square hood in an array manner.

Preferably, the cross section of the air outlet strip is in an inverted V shape, and two ends of the air outlet strip are subjected to flaring treatment.

Preferably, the top periphery of the cabinet body is provided with a limiting flange, a groove is formed in the side face of the limiting flange, a sealing strip is movably inserted into the groove, and a first spring is installed on the inner side of the sealing strip.

Preferably, a round hole is formed in the top end of the movable rod of the electric telescopic rod, a T-shaped column is movably inserted into the round hole, the T-shaped column is connected with the round hole through a second spring, and the T-shaped column is fixedly connected with the exhaust hood.

Compared with the prior art, the invention has the beneficial effects that:

1. compared with the prior art, the liftable exhaust hood is designed, so that the area of the heat dissipation channel can be increased to improve the heat dissipation capacity when the temperature in the cabinet is high, meanwhile, the heat dissipation channel can be sealed in cold weather, the invasion of cold air into the cabinet and the emission of hot air in the cabinet are reduced, the use stability of the switch cabinet is effectively improved, and furthermore, the front-back movable mounting frame is further designed, so that adjacent electrical equipment can be distributed in a staggered manner from front to back, the heat is dispersed, and the improvement of the heat dissipation efficiency of the equipment is facilitated;

2. compared with the prior art, the scheme improves the waterproof capability of the switch cabinet by carrying out structural optimization on the exhaust hood and the air inlet structure, and can achieve the IP 5-level water spray prevention effect;

compare in prior art, this scheme has designed the air drying subassembly at the air inlet, can carry out dehumidification to the air that gets into in the cabinet and handle, has guaranteed the degree of dryness in the cabinet.

Drawings

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

FIG. 1 is a three-dimensional schematic view of a low-voltage switchgear of the present invention;

FIG. 2 is a front view of the low voltage switchgear of the present invention;

FIG. 3 is a schematic view of the internal structure of the cabinet of the present invention;

FIG. 4 is a schematic view of the air dryer assembly of the present invention;

FIG. 5 is a schematic cross-sectional view taken along line C-C of the present invention;

FIG. 6 is a three-dimensional schematic view of an exhaust hood according to the present invention;

FIG. 7 is an enlarged view of the point A in the present invention;

FIG. 8 is an enlarged view of the position B in 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

Referring to fig. 1-3, the present embodiment provides a technical solution:

a low-voltage switch cabinet with good protection performance comprises a base 1 and a cabinet body 2, the cabinet body 2 is arranged at the top end of the base 1, a cabinet door 3 is arranged on the front side surface of the cabinet body 2, the top end of the cabinet body 2 is opened, an exhaust hood 4 is movably sleeved at the top of the cabinet body 2, electric telescopic rods 6 are symmetrically arranged on the left and right sides of the inner cavity of the cabinet body 2, the electric telescopic rods 6 are driven to be connected with the exhaust hood 4, the lifting motion is carried out by controlling the exhaust hood 4, the effect of changing the area of an exhaust passage is achieved, front and back movable mounting frames 5 are arranged on the left and right sides of the inner cavity of the cabinet body 2, the front and back movable mounting frames 5 on the two sides are distributed in a vertically staggered manner, fan seat plates 7 are symmetrically arranged on the upper portion of the inner cavity of the cabinet body 2, a first fan 8 is mounted on the fan seat plates 7, air inlets 9 are symmetrically arranged on the lower portion of the cabinet body 2, preferably, the air inlets 9 are arranged downwards towards the outer side, the design can improve the capability of preventing the cabinet body from entering by spraying water from the outside, the filter screen 91 is installed in the air inlet 9, the temperature sensor 14 is arranged in the cabinet body 2, the temperature in the cabinet body can be monitored in real time through the temperature sensor 14, when the temperature is too high, the electric telescopic rod 6 is extended and started to push the exhaust hood 4 to move upwards, so that the channel area of exhaust and heat dissipation is increased, meanwhile, the first fan 8 is started to further accelerate the flowing and discharging speed of heat in the cabinet body 2, and further the heat dissipation capacity of the switch cabinet is greatly improved; when the temperature is too low, the electric telescopic rod 6 is contracted and started, the exhaust hood 4 is pulled to move downwards, and the channel area of heat exchange inside and outside the cabinet body 2 is reduced.

Further, see fig. 5, the movable mounting bracket 5 of the front and back is including establishing the slide rail 51 on the internal side wall of cabinet 2, slide rail 51 divide into relative two sets of from top to bottom, slidable mounting has vertical mount 52 between two sets of slide rails 51, vertical mount 52 rear side middle part is connected with telescopic cylinder 53, horizontal mounting panel 54 of a plurality of groups is installed at the interval on vertical mount 52's the front, this kind of movable mounting bracket structure of the front and back is specifically disclosed herein, it can promote vertical mount 52 back-and-forth movement in a flexible way through telescopic cylinder 53, during the heat dissipation, stagger around horizontal mounting panel 54 through control both sides, make the electrical equipment on it separate far away, the heat dispersion, this kind of design, the radiating effect has greatly been improved, the heat that the adjacent equipment of upper and lower side produced influences each other lessly, it is safer and more reliable to use.

Further, as shown in fig. 6, the exhaust hood 4 includes a top cover plate 41, a protective enclosure plate 42 is arranged at the bottom end of the top cover plate 41, a square cover 44 is arranged at the inner side of the protective enclosure plate 42, the protective enclosure plate 42 is in an inverted square platform shape, air outlet strips 43 are uniformly distributed on four side inclined planes of the protective enclosure plate 42, an anti-falling flange 45 is arranged at the inner periphery of a bottom opening of the square cover 44, a limiting flange 21 is arranged at the periphery of the top end of the cabinet body 2, a groove is arranged on the side surface of the limiting flange 21, a sealing strip 22 is movably inserted in the groove, and a first spring 23 is arranged at the inner side of the sealing strip 22, so that, as shown in fig. 8, the design can ensure sufficient sealing capability when the cabinet body 2 and the exhaust hood 4 move relatively, and ensure the waterproof and dustproof capabilities of the equipment; air outlets 46 are distributed on the side surface of the square cover 44 in an array manner, preferably, as shown in fig. 7, the cross section of the air outlet strip 43 is in a reverse V shape, so that external water can be effectively prevented from being sprayed into the inner side of the air outlet strip, the waterproof energy level of the equipment is improved, the dustproof capacity of the equipment is also improved, and the heat dissipation capacity can be improved by flaring the two ends of the air outlet strip 43.

Further, as shown in fig. 8, a round hole is formed in the top end of the movable rod of the electric telescopic rod 6, a T-shaped column 61 is movably inserted into the round hole, the T-shaped column 61 is connected with the round hole through a second spring 62, and through the structural design, the buffering and protecting capacity of the cabinet body 2 for resisting falling objects is improved.

Example two

Compared with the first embodiment, the second embodiment has the following differences:

referring to fig. 2-4, an air drying assembly is disposed at the lower portion of an inner cavity of a cabinet body 2, an electric heating plate 31 is disposed at the inner side of a cabinet door 3, and further, the air drying assembly includes a housing 10, the housing 10 is in an inverted isosceles trapezoid shape, two air inlet cavities are formed between inclined planes at two sides of the housing 10 and the cabinet body 2, an air inlet 9 is communicated with the air inlet cavities, a drying ball net layer 12 is disposed at the bottom end of a top plate of the housing 10, the drying ball net layer 12 includes a plurality of layers which are extended and retracted in the same proportion, an opening communicated with the drying ball net layer 12 is disposed on the top plate of the housing 10 for replacing a drying ball, two sets of second fans 11 are symmetrically disposed at the middle portion of the top surface of the housing 10, the second fans 11 are located in a coverage area of the drying ball net layer 12, and transverse air inlet pipes 13 are uniformly distributed on the inclined planes at two sides of the housing 10.

When the temperature sensor 14 detects that the temperature inside the cabinet body 2 is too low, in addition to reducing the area of a heat exchange channel by moving the exhaust hood 4, the embodiment also provides a method for improving the cold resistance of the equipment by heating through the electric heating plate 31, and in specific implementation, the distance between the internal electric equipment and the electric heating plate 31 can be changed by moving the mounting rack 5 back and forth, so as to achieve the function of improving the temperature rise effect;

simultaneously, this embodiment has still disclosed the concrete structure of an air drying subassembly, and it passes through dry spherical network layer 12, can carry out dehumidification to the air that gets into the cabinet body 2 and handle, has guaranteed the internal degree of dryness of cabinet, and a plurality of layers are less to the resistance of air through the dry spherical network layer 12 of surely thinly designing, and is less to the influence of radiating effect.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above disclosure of further embodiments of the invention is intended only to facilitate the explanation of the invention. Further examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a low-voltage switchgear that barrier propterty is good, is including base (1) and the cabinet body (2), establish on base (1) top cabinet body (2), cabinet body (2) leading flank is equipped with cabinet door (3), its characterized in that: the top end of the cabinet body (2) is opened, an exhaust hood (4) is movably sleeved at the top of the cabinet body (2), the top of the inner cavity of the cabinet body (2) is symmetrically provided with electric telescopic rods (6) at the left and the right, the electric telescopic rods (6) are connected with an exhaust hood (4) in a driving way, the effect of changing the area of the exhaust passage is achieved by controlling the exhaust hood (4) to move up and down, the left side and the right side of the inner cavity of the cabinet body (2) are respectively provided with a front-back movable mounting rack (5), the front-back movable mounting racks (5) at the two sides are distributed in a vertically staggered manner, the upper part of the inner cavity of the cabinet body (2) is symmetrically provided with fan seat boards (7) at the left and the right, a first fan (8) is arranged on the fan seat plate (7), air inlets (9) are symmetrically arranged on the left and right of the lower part of the cabinet body (2), a filter screen (91) is installed in the air inlet (9), and a temperature sensor (14) is arranged in the cabinet body (2).

2. The low-voltage switch cabinet with good protection performance as claimed in claim 1, is characterized in that: the lower part of the inner cavity of the cabinet body (2) is provided with an air drying assembly, and the inner side of the cabinet door (3) is provided with an electric heating plate (31).

3. The low-voltage switch cabinet with good protection performance as claimed in claim 2, characterized in that: the air drying component comprises a shell (10), the cross section of the shell (10) is in an inverted isosceles trapezoid shape, two air inlet cavities are formed between inclined planes on two sides of the shell (10) and a cabinet body (2), air inlets (9) are communicated with the air inlet cavities, a drying ball net layer (12) is arranged at the bottom end of a top plate of the shell (10), the drying ball net layer (12) comprises a plurality of layers which stretch in the same proportion, openings communicated with the drying ball net layer (12) are formed in the top plate of the shell (10) and used for replacing drying balls, two groups of second fans (11) are symmetrically arranged in the left and right direction of the middle of the top surface of the shell (10), the second fans (11) are located in a coverage area of the drying ball net layer (12), and transverse air inlet pipes (13) are uniformly distributed on the inclined planes on two sides of the shell (10).

4. The low-voltage switch cabinet with good protection performance as claimed in claim 1, is characterized in that: portable mounting bracket (5) is including establishing slide rail (51) on the cabinet body (2) inside wall around, slide rail (51) divide into relative two sets ofly from top to bottom, and slidable mounting has vertical mount (52) between two sets of slide rails (51), vertical mount (52) rear side mid-connection has telescopic cylinder (53), a plurality of groups transverse installation board (54) are installed at the interval on the front of vertical mount (52).

5. The low-voltage switch cabinet with good protection performance as claimed in claim 1, is characterized in that: the exhaust hood (4) comprises a top cover plate (41), a protection coaming (42) is arranged at the bottom end of the top cover plate (41), a square cover (44) is arranged on the inner side of the protection coaming (42), the protection coaming (42) is in an inverted square table shape, air outlet strips (43) are uniformly distributed on four inclined planes of the four sides of the protection coaming (42), an anti-dropping flange (45) is arranged on the inner periphery of a bottom opening of the square cover (44), and air outlet holes (46) are distributed on the side face of the square cover (44) in an array mode.

6. The low-voltage switch cabinet with good protection performance as claimed in claim 6, characterized in that: the cross section of the air outlet strip (43) is in an inverted V shape, and the two ends of the air outlet strip (43) are subjected to flaring treatment.

7. The low-voltage switch cabinet with good protection performance as claimed in claim 5, characterized in that: the top periphery of the cabinet body (2) is equipped with limiting flange (21), be equipped with the recess on the side of limiting flange (21), the recess internalization is inserted and is equipped with sealing strip (22), first spring (23) are installed to sealing strip (22) inboard.

8. The low-voltage switch cabinet with good protection performance as claimed in claim 1, is characterized in that: the top end of a movable rod of the electric telescopic rod (6) is provided with a round hole, a T-shaped column (61) is movably inserted in the round hole, the T-shaped column (61) is connected with the round hole through a second spring (62), and the T-shaped column (61) is fixedly connected with the exhaust hood (4).