Low-voltage switch cabinet with dustproof and moistureproof structure

Abstract

The invention discloses a low-voltage switch cabinet with a dustproof and moistureproof structure, and relates to the technical field of switch cabinets, the low-voltage switch cabinet comprises a cabinet body, electrical elements of the cabinet body are fixedly mounted, a protective door is rotatably mounted on one side of the outer surface of the cabinet body, and a handle is fixedly mounted on the outer surface of the protective door; the moisture-proof assembly is used for leading out water vapor in the low-voltage switch cabinet; the bearing assembly is used for stably supporting electrical elements in the low-voltage switch cabinet; and the dustproof assembly is used for ventilation and heat dissipation in the low-voltage switch cabinet, and the outer surface of the dustproof assembly is provided with a positioning groove. According to the low-voltage switch cabinet with the dustproof and moistureproof structure, electrical elements are installed on the frame plate by a worker, and water vapor is conveyed into the semicircular pipe along the fitting sheet in the liquid discharge groove and is discharged from the ventilation flow guide part. The ventilation diversion members are arranged at two sides of the cabinet body, and air is conveyed into the cabinet body from the ventilation diversion members at two sides of the cabinet body, so that the air flow rate in the cabinet body is increased.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinets, and in particular to a low-voltage switch cabinet with a dustproof and moisture-proof structure. Background Art

[0002] The switch cabinet is an electrical equipment. The external line of the switch cabinet first enters the main control switch inside the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage room switch cabinets, with high-voltage busbars, such as power plants, etc. Some also have low-frequency load shedding to protect the main equipment.

[0003] The main function of the switchgear is to open and close, control and protect electrical equipment in the process of power generation, transmission, distribution and power conversion in the power system. The components in the switchgear mainly include circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protective devices. There are many ways to classify switchgear. For example, according to the installation method of the circuit breaker, it can be divided into removable switchgear and fixed switchgear; or according to the different cabinet structures, it can be divided into open switchgear, metal-enclosed switchgear and metal-enclosed armored switchgear; according to the different voltage levels, it can be divided into high-voltage switchgear, medium-voltage switchgear and low-voltage switchgear. It is mainly suitable for various occasions such as power plants, substations, petrochemicals, metallurgical steel rolling, light industry and textiles, factories and mines, residential areas, high-rise buildings, etc.

[0004] At present, during the use of high-voltage switchgear, a large amount of heat is often generated, causing water vapor to condense inside the cabinet, causing electrical components to become damp and short-circuit, affecting the normal use of the switchgear and reducing its service life. Summary of the invention

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A low-voltage switch cabinet with a dust-proof and moisture-proof structure, comprising a cabinet body, the electrical components of which are fixedly installed, a protective door rotatably installed on one side of the outer surface of the cabinet body, and a handle fixedly installed on the outer surface of the protective door;

[0006] Moisture-proof components, which are used to guide water vapor out of the low-voltage switch cabinet;

[0007] The load-bearing assembly is used to stably support the electrical components in the low-voltage switch cabinet;

[0008] A dustproof component, which is used for ventilation and heat dissipation in a low-voltage switch cabinet, and a positioning groove is provided on the outer surface of the dustproof component;

[0009] The positioning groove is opened in the middle of the top of the cabinet, the dustproof component is fixedly installed in the cavity of the cabinet, and the dustproof component extends to the top of the cabinet through the positioning groove, the bearing component is provided with three groups, the three groups of bearing components are all sleeved on the outer surface of the dustproof component, and the bearing component is erected inside the cabinet, the moisture-proof component is fixedly installed on both sides of the outer surface of the cabinet, the moisture-proof component extends through the cabinet surface to the inside of its cavity, and the moisture-proof component is fixedly connected to the bearing component; the switch cabinet is mainly suitable for various occasions such as power plants, substations, petrochemicals, metallurgical steel rolling, light industry and textiles, factories and mines, residential areas, high-rise buildings, etc. Therefore, the electrical components in the switch cabinet are mostly in a long-term operation state. When the electrical components are running, heat is generated to increase the temperature in the cabinet, and water vapor is condensed in the cabinet. Since the traditional switch cabinet mostly ventilates and dissipates heat to the cabinet through holes opened on the surface of the cabinet, but the holes have poor protection, dust can easily enter the cabinet through the holes to cause the holes to be blocked, and the heat dissipation and ventilation effect is poor, resulting in overheating of the electrical components and short circuit due to moisture.

[0010] The moisture-proof assembly includes a ventilation guide, a semicircular tube is fixedly mounted on the outer surface of the ventilation guide, and a bonding sheet is fixedly mounted on the surface of the semicircular tube away from the ventilation guide. The staff installs the electrical components on the rack, and the water vapor is transported to the semicircular tube along the bonding sheet in the drainage groove, and the water vapor is discharged from the ventilation guide.

[0011] Preferably, the ventilation guide is fixedly mounted on both sides of the outer surface of the cabinet, the ventilation guide is adapted to the bearing assembly, the semicircular tube passes through the cabinet and extends to the interior of its bearing assembly, and the bonding sheet is fixedly connected to the bearing assembly. The ventilation guide is arranged on both sides of the cabinet, and air is transported from the ventilation guides on both sides of the cabinet into the cabinet, so as to reduce the air flow rate in the cabinet.

[0012] Preferably, the ventilation guide comprises a connecting plate, the surface of the connecting plate is provided with guide holes, triangular baffles are fixedly installed on both sides of the outer surface of the connecting plate, an inclined plate is fixedly installed on the surface of the triangular baffle away from the connecting plate, a through groove is provided on the surface of the inclined plate, and an inclined tube is arranged between the guide hole and the through groove. The inclined tube arranged between the guide hole and the through groove is convenient for the water vapor in the cabinet to be discharged, the triangular baffles on both sides of the connecting plate are connected with the inclined plate, the through groove is shielded, and the outer layer of the cabinet is protected by the triangular structure, when the cabinet is hit, the triangular block formed by the inclined tube and the triangular baffle will reduce the force area between the cabinet and the impact object, and reduce the degree of damage to the electrical components in the cabinet, because the guide hole is used for water vapor discharge, the air first contacts with the moist water vapor before entering the cabinet, and some dust is adsorbed in the water vapor, so as to reduce the dust content in the air, and avoid dust from entering the cabinet along the through groove to cause the guide hole to be blocked, thereby affecting the ventilation effect of the cabinet.

[0013] Preferably, the connecting plate is fixedly mounted on the outer surface of the cabinet, the inclined tube is fixedly connected to the semicircular tube, and the semicircular tube is fixedly mounted inside the guide hole.

[0014] Preferably, the bearing assembly includes a frame plate, and the surface of the frame plate is provided with a through groove and a ventilation groove, two through grooves are provided, and the two through grooves are symmetrically arranged with the frame plate as the center, and the ventilation grooves are arranged on both sides of the through grooves. The staff installs the electrical components on the top of the frame plate. When the switch cabinet is running in autumn and winter, the temperature difference between the inside and outside of the cabinet is large, and water vapor is easy to condense in the cabinet. At this time, due to the large amount of water vapor condensed near the electrical components in the cabinet, the water vapor adheres to the inner wall and the frame plate and is transported to the moisture-proof assembly along the drainage groove, so that the water vapor in the cabinet is discharged from the cabinet, avoiding the condensation of water vapor causing excessive humidity in the cabinet and causing short circuit of the electrical components.

[0015] Preferably, a fixing plate is fixedly installed on both sides of the outer surface of the shelf, a drainage groove is provided inside the fixing plate, and a support frame is fixedly installed on the bottom of the fixing plate. The shelf is installed inside the cabinet through the support frame and is arranged in three layers, and both sides of the three-layer shelf are connected to the moisture-proof component so that the water vapor attached to the shelf can be discharged.

[0016] Preferably, the support frame is fixedly installed inside the cabinet, the semicircular tube passes through the fixing plate and extends to the inside of the drainage trough, and the drainage trough is fixedly connected to the bonding sheet.

[0017] Preferably, the dustproof component includes an air duct, a square cavity is fixedly installed at the bottom of the air duct, a circular hole is opened inside the square cavity, and two circular holes are provided, and the two circular holes are symmetrically arranged with the air duct as the center.

[0018] Preferably, a connecting pipe is fixedly installed at the bottom of the circular hole, a circular cover is sleeved on the lower surface of the connecting pipe, an exhaust slot is opened on the surface of the circular cover, and an adsorption fan is rotatably installed inside the circular cover. When the switch cabinet is in operation, part of the high-temperature airflow in the cabinet is discharged to the outside of the cabinet through the guide holes arranged on both sides of the cabinet, and the other part of the high-temperature airflow enters the circular cover along the exhaust slot. Since the circular cover is connected to the square cavity through the connecting pipe, the square cavity is arranged above the outside of the cabinet and connected to the air guide duct. At this time, the high-temperature airflow in the circular cover is transported to the square cavity and contacts the low-temperature air transported to the square cavity by the air guide duct. When the airflow is exchanged, the adsorption fan is blown by the air and rotates in the circular cover. The low-temperature airflow generated by the rotation of the adsorption fan is transported to the cabinet through the exhaust slot, thereby cooling the high-temperature airflow to accelerate the air exchange speed in the cabinet and cool the cabinet.

[0019] Preferably, the air duct is fixedly mounted on the top of the cabinet through a positioning groove, the surface of the round cover away from one end of the air duct passes through the bottom of the cabinet and extends to the outside thereof, and the round cover passes through the inside of the through groove. The adsorption fan is set to be made of activated carbon. When the air flows in the round cover, the activated carbon adsorbs the dust. Since the round cover passes through the cabinet, when it rains or snows, rainwater is introduced from the air duct into the round cover, and transported along the round cover to the bottom of the cabinet, and the adsorption fan is flushed to clean the dust attached to the adsorption fan, and then the rainwater entering the air duct is discharged from the bottom of the cabinet to prevent rainwater from entering the cabinet and causing the electrical components to get damp.

[0020] The present invention provides a low-voltage switch cabinet with a dust-proof and moisture-proof structure. It has the following beneficial effects:

[0021] 1. The low-voltage switch cabinet with dust and moisture-proof structure is installed on the frame by the staff, and the water vapor is transported to the semicircular tube along the bonding sheet in the drainage groove, and the water vapor is discharged from the ventilation guide. The ventilation guide is set on both sides of the cabinet, and the air is transported into the cabinet from the ventilation guides on both sides of the cabinet to increase the air flow rate in the cabinet.

[0022] 2. The low-voltage switch cabinet with dust-proof and moisture-proof structure facilitates the discharge of water vapor in the cabinet through the inclined pipe set up between the guide hole and the through groove. The triangular baffles on both sides of the connecting plate are connected to the inclined plate to shield the through groove and protect the outer layer of the cabinet through the triangular structure. When the cabinet is hit, the triangular block formed by the inclined pipe and the triangular baffle will reduce the force area between the cabinet and the impact object, and reduce the damage to the electrical components in the cabinet. Since the guide hole is used to discharge water vapor, the air first contacts with the moist water vapor before entering the cabinet, and some dust is adsorbed in the water vapor to reduce the dust content in the air, and avoid dust entering the cabinet along the through groove to cause the guide hole to be blocked, affecting the ventilation effect of the cabinet.

[0023] 3. The low-voltage switch cabinet with dust-proof and moisture-proof structure has electrical components installed on the top of the frame by the staff. When the switch cabinet is in operation in autumn and winter, the temperature difference between the inside and outside of the cabinet is large, and water vapor is easily condensed in the cabinet. At this time, due to the large amount of condensed water vapor near the electrical components in the cabinet, the water vapor adheres to the inner wall and the frame and is transported to the moisture-proof component along the drainage groove, so that the water vapor in the cabinet is discharged from the cabinet to avoid water vapor condensation causing excessive humidity in the cabinet and causing short circuit of electrical components.

[0024] 4. The low-voltage switch cabinet with a dust-proof and moisture-proof structure, when the switch cabinet is in operation, part of the high-temperature airflow in the cabinet is discharged to the outside of the cabinet through the guide holes arranged on both sides of the cabinet, and the other part of the high-temperature airflow enters the round cover along the exhaust slot. Since the round cover is connected to the square cavity through a connecting pipe, the square cavity is arranged above the outside of the cabinet and connected to the air guide duct. At this time, the high-temperature airflow in the round cover is transported to the square cavity and contacts with the low-temperature air transported to the square cavity by the air guide duct. When the airflow is exchanged, the adsorption fan blades are blown by the air and rotate in the round cover. The low-temperature airflow generated by the rotation of the adsorption fan blades is transported into the cabinet through the exhaust slot, thereby cooling the high-temperature airflow to speed up the air exchange speed in the cabinet and cool the cabinet.

[0025] 5. The low-voltage switch cabinet with dust-proof and moisture-proof structure has an adsorption fan sheet made of activated carbon. When the air flows in the round cover, the activated carbon adsorbs the dust. Since the round cover runs through the cabinet, when it rains or snows, rainwater is introduced into the round cover from the air duct and transported to the bottom of the cabinet along the round cover. The adsorption fan sheet is flushed to clean the adsorbed dust, and the rainwater entering the air duct is discharged from the bottom of the cabinet to prevent rainwater from entering the cabinet and causing the electrical components to get damp. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the external structure of a low-voltage switch cabinet with a dust-proof and moisture-proof structure according to the present invention;

[0027] Figure 2 This is a schematic diagram of the internal structure of the cabinet of the present invention;

[0028] Figure 3 This is a schematic diagram of the connection structure between the moisture-proof component and the load-bearing component of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the bearing assembly of the present invention;

[0030] Figure 5 It is a schematic diagram of the cross-sectional structure of the load-bearing assembly of the present invention;

[0031] Figure 6 It is a schematic diagram of the cross-sectional structure of the ventilation guide member of the present invention;

[0032] Figure 7 This is a schematic diagram of the connection structure between the dustproof component and the bearing component of the present invention;

[0033] Figure 8 It is a schematic diagram of the cross-sectional structure of the dustproof component of the present invention;

[0034] Fig. 9 It is a schematic diagram of the enlarged cross-sectional structure of the dustproof component of the present invention.

[0035] In the figure: 1. protective door; 2. handle; 3. dust-proof component; 31. air guide duct; 32. connecting pipe; 33. round cover; 34. adsorption fan; 35. exhaust slot; 36. square cavity; 37. round hole; 4. cabinet; 5. moisture-proof component; 51. semicircular pipe; 52. ventilation guide; 521. guide hole; 522. connecting plate; 523. triangular baffle; 524. inclined plate; 525. through slot; 526. inclined pipe; 53. fitting sheet; 6. load-bearing component; 61. fixing plate; 62. through slot; 63. shelf plate; 64. ventilation slot; 65. support frame; 66. drainage slot; 7. positioning slot. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0037] The first embodiment, as Figures 1 to 5 As shown, the present invention provides a technical solution: a low-voltage switch cabinet with a dustproof and moisture-proof structure, comprising a cabinet body 4, the electrical components of the cabinet body 4 are fixedly installed, a protective door 1 is rotatably installed on one side of the outer surface of the cabinet body 4, and a handle 2 is fixedly installed on the outer surface of the protective door 1;

[0038] A moisture-proof component 5, which is used to guide water vapor out of the low-voltage switch cabinet;

[0039] The bearing assembly 6 is used for stably supporting the electrical components in the low-voltage switch cabinet;

[0040] A dustproof component 3, which is used for ventilation and heat dissipation in the low-voltage switch cabinet, and a positioning groove 7 is provided on the outer surface of the dustproof component 3;

[0041] The positioning groove 7 is opened in the middle of the top of the cabinet 4, the dustproof component 3 is fixedly installed inside the cavity of the cabinet 4, and the dustproof component 3 passes through the cabinet 4 through the positioning groove 7 and extends to its top, the bearing component 6 is provided with three groups, the three groups of the bearing components 6 are all sleeved on the outer surface of the dustproof component 3, and the bearing component 6 is mounted inside the cabinet 4, the moisture-proof component 5 is fixedly installed on both sides of the outer surface of the cabinet 4, the moisture-proof component 5 passes through the surface of the cabinet 4 and extends to its cavity, and the moisture-proof component 5 is fixedly connected to the bearing component 6; switch The switch cabinet is mainly suitable for various occasions such as power plants, substations, petrochemicals, metallurgy and steel rolling, light industry and textiles, factories and mines, residential areas, high-rise buildings, etc. Therefore, the electrical components in the switch cabinet are mostly in a long-term operation state. When the electrical components are in operation, heat is generated, which increases the temperature in the cabinet body 4, and water vapor condenses in the cabinet body 4. Since traditional switch cabinets mostly ventilate and dissipate heat to the cabinet body 4 through holes opened on the surface of the cabinet body 4, but the holes have poor protection, dust can easily enter the cabinet body 4 through the holes, causing the holes to be blocked, and the heat dissipation and ventilation effect is poor, resulting in overheating of the electrical components and short circuit due to moisture.

[0042] The moisture-proof assembly 5 includes a ventilation guide 52, a semicircular tube 51 is fixedly mounted on the outer surface of the ventilation guide 52, and a bonding sheet 53 is fixedly mounted on the surface of the semicircular tube 51 away from the ventilation guide 52. The staff installs the electrical components on the frame 63, and the water vapor is transported to the semicircular tube 51 along the bonding sheet 53 in the drainage groove 66, and the water vapor is discharged from the ventilation guide 52.

[0043] The ventilation guide 52 is fixedly mounted on both sides of the outer surface of the cabinet 4, the ventilation guide 52 is adapted to the bearing assembly 6, the semicircular tube 51 penetrates the cabinet 4 and extends to the inside of the bearing assembly 6, and the bonding sheet 53 is fixedly connected to the bearing assembly 6. The ventilation guide 52 is arranged on both sides of the cabinet 4, and the air is transported from the ventilation guides 52 on both sides of the cabinet 4 to the inside of the cabinet 4, so as to reduce the air flow rate in the cabinet 4.

[0044] The ventilation guide member 52 includes a connecting plate 522, a guide hole 521 is opened on the surface of the connecting plate 522, triangular baffles 523 are fixedly installed on both sides of the outer surface of the connecting plate 522, and an inclined plate 524 is fixedly installed on the surface of the triangular baffle 523 away from the connecting plate 522, a through groove 525 is opened on the surface of the inclined plate 524, and an inclined tube 526 is arranged between the guide hole 521 and the through groove 525.

[0045] The connecting plate 522 is fixedly mounted on the outer surface of the cabinet 4, and the inclined tube 526 is fixedly connected to the semicircular tube 51, and the semicircular tube 51 is fixedly mounted inside the guide hole 521. The inclined tube 526 set between the guide hole 521 and the through slot 525 is convenient for the water vapor in the cabinet 4 to be discharged. The triangular baffles 523 on both sides of the connecting plate 522 are connected to the inclined plate 524 to shield the through slot 525, and the outer layer of the cabinet 4 is protected by the triangular structure. When the cabinet 4 is hit, the triangular block formed by the inclined tube 526 and the triangular baffle 523 will reduce the force area between the cabinet and the impact object, and reduce the damage degree of the electrical components in the cabinet. Since the guide hole 521 is used for water vapor discharge, the air first contacts with the moist water vapor before entering the cabinet 4, and some dust is adsorbed in the water vapor, so as to reduce the dust content in the air and prevent dust from entering the cabinet 4 along the through slot 525 to cause the guide hole 521 to be blocked, thereby affecting the ventilation effect of the cabinet 4.

[0046] The second embodiment is based on the first embodiment. Figures 4 to 6 As shown, the bearing assembly 6 includes a frame plate 63, and the surface of the frame plate 63 is respectively provided with a through groove 62 and a ventilation groove 64. There are two through grooves 62, and the two through grooves 62 are symmetrically arranged with the frame plate 63 as the center, and the ventilation groove 64 is arranged on both sides of the through groove 62. The staff installs the electrical components on the top of the frame plate 63. When the switch cabinet is running in autumn and winter, the temperature difference between the inside and outside of the cabinet 4 is large, and it is easy to condense water vapor in the cabinet 4. At this time, due to the large amount of water vapor condensed near the electrical components in the cabinet 4, the water vapor adheres to the inner wall and the frame plate 63 and is transported to the moisture-proof assembly 5 along the drainage groove 66, so that the water vapor in the cabinet 4 is discharged from the cabinet 4, so as to avoid the condensation of water vapor causing the humidity in the cabinet 4 to be too high and cause the electrical components to short-circuit.

[0047] The outer surfaces of the shelf 63 are fixedly mounted with fixing plates 61 on both sides, the fixing plates 61 are provided with drainage grooves 66 inside, and the bottom of the fixing plates 61 is fixedly mounted with support frames 65. The shelf 63 is installed inside the cabinet 4 through the support frames 65, and is arranged in three layers, and both sides of the three-layer shelf 63 are connected to the moisture-proof assembly 5, so that the water vapor attached to the shelf 63 can be discharged.

[0048] The support frame 65 is fixedly installed inside the cabinet 4 , and the semicircular tube 51 penetrates the fixing plate 61 and extends to the inside of the drainage groove 66 . The drainage groove 66 is fixedly connected to the bonding sheet 53 .

[0049] The third embodiment is based on the first and second embodiments. Figures 7 to 9As shown, the dustproof component 3 includes an air duct 31, a square cavity 36 is fixedly installed at the bottom of the air duct 31, a circular hole 37 is opened inside the square cavity 36, and two circular holes 37 are provided, and the two circular holes 37 are symmetrically arranged with the air duct 31 as the center.

[0050] A connecting pipe 32 is fixedly installed at the bottom of the circular hole 37 , a circular cover 33 is sleeved on the lower surface of the connecting pipe 32 , an exhaust slot 35 is opened on the surface of the circular cover 33 , and an adsorption fan 34 is rotatably installed inside the circular cover 33 . When the switch cabinet is in operation, part of the high-temperature airflow in the cabinet body 4 is discharged to the outside of the cabinet body 4 through the guide holes 521 set on both sides of the cabinet body 4, and the other part of the high-temperature airflow enters the circular cover 33 along the exhaust slot 35. Since the circular cover 33 is connected to the square cavity 36 through the connecting pipe 32, the square cavity 36 is arranged above the outside of the cabinet body 4 and is connected to the air guide duct 31. At this time, the high-temperature airflow in the circular cover 33 is transported to the square cavity 36 and contacts with the low-temperature air transported to the square cavity 36 by the air guide duct 31. When the airflow is exchanged, the adsorption fan blades 34 are blown by the air and rotate in the circular cover 33. The low-temperature airflow generated by the rotation of the adsorption fan blades 34 is transported to the cabinet body 4 through the exhaust slot 35, thereby cooling the high-temperature airflow to speed up the air exchange speed in the cabinet body 4 and cool the cabinet body.

[0051] The air duct 31 is fixedly mounted on the top of the cabinet 4 through the positioning groove 7. The surface of the round cover 33 away from one end of the air duct 31 passes through the bottom of the cabinet 4 and extends to the outside thereof. The round cover 33 passes through the inside of the through groove 62. The adsorption fan 34 is set to be made of activated carbon. When the air flows in the round cover 33, the activated carbon adsorbs the dust. Since the round cover 33 passes through the cabinet 4, when it rains or snows, rainwater is introduced from the air duct 31 into the round cover 33, and is transported to the bottom of the cabinet 4 along the round cover 33, and the adsorption fan is flushed to clean the adsorbed dust. Then the rainwater entering the air duct 31 is discharged from the bottom of the cabinet 4 to prevent rainwater from entering the cabinet 4 and causing the electrical components to get damp.

[0052] When in use, the switch cabinet is mainly suitable for various occasions such as power plants, substations, petrochemicals, metallurgy and steel rolling, light industry and textiles, factories and mines, residential areas, high-rise buildings, etc. Therefore, the electrical components in the switch cabinet are mostly in a long-term operation state. When the electrical components are in operation, heat is generated to increase the temperature in the cabinet 4, and water vapor condenses in the cabinet 4. Since traditional switch cabinets mostly ventilate and dissipate heat to the cabinet 4 through holes opened on the surface of the cabinet 4, but the holes have poor protection, dust can easily enter the cabinet 4 through the holes, causing the holes to be blocked, and the heat dissipation and ventilation effect is poor, resulting in overheating of the electrical components and short circuit due to moisture.

[0053] The staff installs the electrical components on the frame 63, and the water vapor is transported to the semicircular tube 51 along the bonding sheet 53 in the drainage groove 66, and the water vapor is discharged from the ventilation guide 52. The ventilation guide 52 is set on both sides of the cabinet 4, and the air is transported from the ventilation guides 52 on both sides of the cabinet 4 to the cabinet 4, so as to reduce the air flow rate in the cabinet 4.

[0054] The inclined tube 526 set between the guide hole 521 and the through groove 525 is convenient for draining out the water vapor in the cabinet 4. The triangular baffles 523 on both sides of the connecting plate 522 are connected to the inclined plate 524 to shield the through groove 525 and protect the outer layer of the cabinet 4 through the triangular structure. When the cabinet 4 is hit, the triangular block formed by the inclined tube 526 and the triangular baffle 523 will reduce the force area between the cabinet and the impact object, and reduce the damage to the electrical components in the cabinet. Since the guide hole 521 is used for draining out water vapor, the air first contacts with the humid water vapor before entering the cabinet 4, and some dust is adsorbed in the water vapor to reduce the dust content in the air and prevent dust from entering the cabinet 4 along the through groove 525 to cause the guide hole 521 to be blocked, thereby affecting the ventilation effect of the cabinet 4.

[0055] The staff installs the electrical components on the top of the frame 63. When the switch cabinet is running in autumn and winter, the temperature difference between the inside and outside of the cabinet 4 is large, and water vapor is easily condensed in the cabinet 4. At this time, since there is more condensed water vapor near the electrical components in the cabinet 4, the water vapor adheres to the inner wall and the frame 63 and is transported to the moisture-proof component 5 along the drainage groove 66, so that the water vapor in the cabinet 4 is discharged from the cabinet 4, avoiding the condensation of water vapor causing the humidity in the cabinet 4 to be too high and causing the electrical components to short-circuit.

[0056] The shelf 63 is installed inside the cabinet 4 through the support frame 65 and is arranged in three layers. Both sides of the three-layer shelf 63 are connected to the moisture-proof component 5 so that the water vapor attached to the shelf 63 can be discharged.

[0057] When the switch cabinet is in operation, air enters the square cavity 36 through the air duct 31, and is transported to the round cover 33 through the connecting pipe 32 arranged below the round hole 37, so that the adsorption fan blades 34 in the round cover 33 are blown by the air and rotate in the round cover 33. The airflow generated by the rotation of the adsorption fan blades 34 is transported to the cabinet body 4 through the exhaust slots 35 to speed up the air flow speed in the cabinet body 4. The electrical components are placed in the middle of the top of the frame plate 63, and the round cover 33 is arranged on both sides of the frame plate 63. When the adsorption fan blades 34 rotate, the electrical components placed on the frame plate 63 are cooled, and dust is prevented from adhering to the electrical components.

[0058] Since the round cover 33 runs through the cabinet 4, when it rains or snows, rainwater is introduced into the round cover 33 from the air duct 31 and transported to the bottom of the cabinet 4 along the round cover 33, and the rainwater entering the air duct 31 is discharged from the bottom of the cabinet 4 to prevent rainwater from entering the cabinet 4 and causing the electrical components to get damp.

[0059] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A low-voltage switch cabinet with a dust-proof and moisture-proof structure, characterized in that: include: A cabinet (4) on which electrical components are fixedly mounted, a protective door (1) being rotatably mounted on one side of an outer surface of the cabinet (4), and a handle (2) being fixedly mounted on the outer surface of the protective door (1); A moisture-proof component (5), the moisture-proof component (5) being used for guiding water vapor out of a low-voltage switch cabinet; A bearing assembly (6), the bearing assembly (6) is used for stably supporting electrical components in a low-voltage switch cabinet; A dustproof component (3), the dustproof component (3) being used for ventilation and heat dissipation in a low-voltage switch cabinet, wherein a positioning groove (7) is provided on the outer surface of the dustproof component (3); The positioning groove (7) is provided in the middle of the top of the cabinet (4); the dustproof component (3) is fixedly installed inside the cavity of the cabinet (4); and the dustproof component (3) passes through the cabinet (4) through the positioning groove (7) and extends to the top thereof; three groups of the bearing components (6) are provided; the three groups of the bearing components (6) are all sleeved on the outer surface of the dustproof component (3); and the bearing components (6) are mounted inside the cabinet (4); the moisture-proof component (5) is fixedly installed on both sides of the outer surface of the cabinet (4); the moisture-proof component (5) passes through the surface of the cabinet (4) and extends to the inside of the cavity thereof; and the moisture-proof component (5) is fixedly connected to the bearing component (6); The moisture-proof component (5) comprises a ventilation guide (52), a semicircular tube (51) is fixedly mounted on the outer surface of the ventilation guide (52), and a bonding sheet (53) is fixedly mounted on the surface of the semicircular tube (51) away from the ventilation guide (52).

2. The low-voltage switch cabinet with dust and moisture-proof structure according to claim 1, characterized in that: The ventilation guide (52) is fixedly mounted on both sides of the outer surface of the cabinet (4); the ventilation guide (52) is compatible with the bearing assembly (6); the semicircular tube (51) penetrates the cabinet (4) and extends to the interior of the bearing assembly (6); and the fitting sheet (53) is fixedly connected to the bearing assembly (6).

3. The low-voltage switch cabinet with dust and moisture-proof structure according to claim 2 is characterized in that: The ventilation guide member (52) comprises a connecting plate (522), a guide hole (521) is provided on the surface of the connecting plate (522), triangular baffles (523) are fixedly installed on both sides of the outer surface of the connecting plate (522), an inclined plate (524) is fixedly installed on the surface of the triangular baffle (523) away from the connecting plate (522), a through groove (525) is provided on the surface of the inclined plate (524), and an inclined tube (526) is arranged between the guide hole (521) and the through groove (525).

4. The low-voltage switch cabinet with dust and moisture-proof structure according to claim 3 is characterized in that: The connection plate (522) is fixedly mounted on the outer surface of the cabinet (4), the inclined tube (526) is fixedly connected to the semicircular tube (51), and the semicircular tube (51) is fixedly mounted inside the guide hole (521).

5. The low-voltage switch cabinet with dust and moisture-proof structure according to claim 1, characterized in that: The bearing assembly (6) comprises a frame plate (63), and the surface of the frame plate (63) is respectively provided with a through groove (62) and a ventilation groove (64), and there are two through grooves (62), and the two through grooves (62) are symmetrically arranged with the frame plate (63) as the center, and the ventilation grooves (64) are arranged on both sides of the through groove (62).

6. The low-voltage switch cabinet with dust and moisture-proof structure according to claim 5, characterized in that: Fixed plates (61) are fixedly mounted on both sides of the outer surface of the frame plate (63), a drainage groove (66) is provided inside the fixed plate (61), and a support frame (65) is fixedly mounted on the bottom of the fixed plate (61).

7. The low-voltage switch cabinet with dust and moisture-proof structure according to claim 6, characterized in that: The support frame (65) is fixedly installed inside the cabinet (4); the semicircular tube (51) penetrates the fixed plate (61) and extends to the inside of the drainage groove (66); and the drainage groove (66) is fixedly connected to the bonding sheet (53).

8. The low-voltage switch cabinet with dust and moisture-proof structure according to claim 1, characterized in that: The dustproof component (3) comprises an air guiding tube (31), a square cavity (36) is fixedly mounted at the bottom of the air guiding tube (31), a circular hole (37) is provided inside the square cavity (36), two circular holes (37) are provided, and the two circular holes (37) are symmetrically arranged with the air guiding tube (31) as the center.

9. The low-voltage switch cabinet with dust and moisture-proof structure according to claim 8, characterized in that: A connecting pipe (32) is fixedly installed at the bottom of the circular hole (37), a circular cover (33) is sleeved on the lower surface of the connecting pipe (32), an exhaust groove (35) is opened on the surface of the circular cover (33), and an adsorption fan (34) is rotatably installed inside the circular cover (33).

10. The low-voltage switch cabinet with dust and moisture-proof structure according to claim 9, characterized in that: The air guide duct (31) is fixedly mounted on the top of the cabinet (4) via a positioning groove (7); a surface of the round cover (33) away from one end of the air guide duct (31) passes through the bottom of the cabinet (4) and extends to the outside thereof; the round cover (33) passes through the interior of the through groove (62).

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