Electrical switch device

Abstract

The invention provides an electrical switch device, and belongs to the technical field of electrical equipment.The electrical switch device comprises a switch cabinet body, an annular belt-shaped moisture absorption body, a fan assembly and a driving assembly.The switch cabinet body is provided with an air inlet and an air outlet, and the air inlet and the air outlet are oppositely distributed; and the annular belt-shaped moisture absorption body is arranged on the inner side of the switch cabinet body and is used for shielding the air inlet and the air outlet. Compared with the prior art, in the heat dissipation process of the switch cabinet body, the annular belt-shaped moisture absorption body absorbs moisture in external air, so that the external air is prevented from carrying the moisture to enter the switch cabinet body, electrical elements in the switch cabinet body are prevented from being affected with damp and damaged, and the service life of the switch cabinet body is prolonged. And during heat dissipation, water vapor absorbed by the annular belt-shaped moisture absorption body can be evaporated to dryness by means of heat of the switch cabinet body, so that the annular belt-shaped moisture absorption body can continuously perform water absorption operation, and the moisture-proof effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical equipment, in particular to an electrical switch device. Background Art

[0002] As an electrical equipment, the switch cabinet includes a cabinet body and several electrical components integrated in the cabinet body. When the switch cabinet is working, the electrical components in the cabinet body will generate a large amount of heat. This heat accumulates inside the cabinet body and will have an adverse effect on the operation of the electrical components. Therefore, the cabinet body needs to be regularly heat-dissipated.

[0003] In the existing technology, the heat dissipation of the switch cabinet body is mostly achieved by using a fan to introduce the outside air into the cabinet body through the vents on the cabinet body to achieve ventilation and heat dissipation of the cabinet body. However, when the humidity of the outside air is high, the air will carry water vapor into the cabinet body, thereby causing moisture damage to the electrical components inside the cabinet body. Some switch cabinets are also equipped with a drying mechanism. Before the outside air enters the cabinet body, the outside air is dried by the drying mechanism so that the air entering the cabinet body does not contain water vapor. However, the existing drying mechanism is relatively complex in structure and expensive in cost. On the other hand, the use of the drying mechanism consumes additional electricity, which is not in line with the concept of energy saving and environmental protection. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the embodiments of the present invention is to provide an electrical switching device.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An electrical switchgear comprises a switchgear cabinet, an annular belt-shaped moisture absorber, a fan assembly and a drive assembly.

[0007] The switch cabinet body is provided with an air inlet and an exhaust port, and the air inlet and the exhaust port are relatively distributed.

[0008] The annular belt-shaped moisture absorber is arranged inside the switch cabinet body and is used to block the air inlet and the exhaust port.

[0009] The fan assembly and the drive assembly are installed on the inner wall of the switch cabinet.

[0010] The fan assembly is used to drive the outside air from the air inlet and the exhaust port through the switch cabinet body,

[0011] The driving assembly is used to drive the annular belt-shaped moisture absorber to operate between the air inlet and the air outlet.

[0012] As a further improvement of the present invention: the outer wall of the annular belt-shaped moisture-absorbing body is in contact with the inner side of the air inlet and the air outlet.

[0013] The fan assembly includes a housing, fan blades, a rotating shaft and a motor.

[0014] The shell is arranged on the inner side of the annular belt-shaped moisture-absorbing body near the air inlet, the rotating shaft is arranged inside the shell and is controlled to rotate by the motor, the rotating shaft is distributed along the axial direction of the shell, the fan blades are provided in several groups, and several of the fan blades are fixedly arranged outside the rotating shaft.

[0015] As a further improvement of the present invention: the outer wall of the shell is fixedly connected to the inner wall of the switch cabinet through a bracket plate.

[0016] As a further improvement of the present invention: a driven roller is rotatably provided inside the air inlet, and a plurality of connecting rods are fixedly provided on the rotating shaft.

[0017] The driving assembly includes a driving roller, a ring plate, a ring rack, a support shaft and a gear.

[0018] The active roller is arranged on the inner side of the shell, and the end of the active roller is rotatably connected to the inner wall of the shell through the support shaft. The gear is fixedly arranged on the outside of the support shaft. One end of the connecting rods away from the rotating shaft is fixedly connected to the inner wall of the ring plate. The annular rack is fixedly arranged on one side of the ring plate and meshes with the gear.

[0019] The active roller and the driven roller are respectively clamped on the inner and outer sides of the annular belt-shaped moisture absorbent body.

[0020] As a further improvement of the present invention: four groups of guide rollers are provided inside the switch cabinet body, and the four groups of guide rollers are used to provide support for the annular belt-shaped desiccant, so that the annular belt-shaped desiccant forms a rectangular structure inside the switch cabinet body that is in contact with the inner side of the air inlet and the exhaust port.

[0021] As a further improvement of the present invention: a support is rotatably provided at the end of the guide roller, and the support is fixedly provided on the inner wall of the switch cabinet.

[0022] As a further improvement of the present invention: the annular belt-shaped moisture-absorbing body is a breathable water-absorbing sponge or a breathable non-woven fabric.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In the embodiment of the present invention, when the switch cabinet body needs to dissipate heat, the fan assembly is started, and the fan assembly draws the outside air so that the outside air passes through the air inlet and the annular belt-shaped desiccant in sequence and enters the inside of the switch cabinet body, and then the outside air passes through the annular belt-shaped desiccant again and is discharged to the outside from the exhaust port, thereby taking out the heat inside the switch cabinet body and realizing the heat dissipation treatment of the switch cabinet body; when the outside air passes through the annular belt-shaped desiccant and enters the inside of the switch cabinet body, the water vapor in the outside air is absorbed by the annular belt-shaped desiccant, so that the air entering the inside of the switch cabinet body remains dry, thereby preventing the outside air from entering the inside of the switch cabinet body together with the water vapor, avoiding damage to the electrical components inside the switch cabinet body, and when the outside air enters the inside of the switch cabinet body, the driving assembly drives the annular belt-shaped desiccant to move between the air inlet and the exhaust port. The rotation makes the part of the annular belt-shaped desiccant that absorbs water vapor pass through the inside of the exhaust port. When the outside air passes through the annular belt-shaped desiccant again and is discharged from the exhaust port, the outside air carrying the heat from the inside of the switch cabinet body can heat and evaporate the water vapor on the annular belt-shaped desiccant, so that the annular belt-shaped desiccant can remain dry when it subsequently runs to the inside of the air inlet, thereby achieving continuous absorption of water vapor. Compared with the existing technology, during the heat dissipation process of the switch cabinet body, the annular belt-shaped desiccant absorbs water vapor from the outside air, thereby preventing the outside air from carrying water vapor into the inside of the switch cabinet body, and avoiding damage to the electrical components inside the switch cabinet body due to moisture. In addition, during heat dissipation, the water vapor absorbed by the annular belt-shaped desiccant can be evaporated with the help of the heat of the switch cabinet body itself, so that the annular belt-shaped desiccant can continue to absorb water, thereby improving the moisture-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of an electrical switchgear Figure 1 ;

[0026] Figure 2 A schematic diagram of the structure of an electrical switchgear Figure 2 ;

[0027] Figure 3 This is a schematic structural diagram of an annular belt-shaped moisture absorber in an electrical switchgear;

[0028] Figure 4 for Figure 2 A magnified schematic diagram of area A in the middle;

[0029] In the figure: 10-switch cabinet body, 101-air inlet, 102-driven roller, 103-guide roller, 104-support, 105-exhaust port, 20-annular belt-shaped moisture absorber, 30-fan assembly, 301-bracket plate, 302-housing, 303-fan blades, 304-rotating shaft, 305-connecting rod, 40-driving assembly, 401-active roller, 402-ring plate, 403-ring rack, 404-support shaft, 405-gear. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] See also Figure 1 as well as Figure 2 This embodiment provides an electrical switchgear, including a switch cabinet body 10, an annular belt-shaped desiccant 20, a fan assembly 30 and a drive assembly 40. The switch cabinet body 10 is provided with an air inlet 101 and an exhaust port 105. The air inlet 101 and the exhaust port 105 are relatively distributed. The annular belt-shaped desiccant 20 is arranged on the inner side of the switch cabinet body 10 to shield the air inlet 101 and the exhaust port 105. The fan assembly 30 and the drive assembly 40 are installed on the inner wall of the switch cabinet body 10. The fan assembly 30 is used to drive external air from the air inlet 101 and the exhaust port 105 through the switch cabinet body 10. The drive assembly 40 is used to drive the annular belt-shaped desiccant 20 to operate between the air inlet 101 and the exhaust port 105.

[0033] When the switch cabinet body 10 needs to dissipate heat, the fan assembly 30 is started, and the fan assembly 30 draws the outside air so that the outside air passes through the air inlet 101 and the annular belt-shaped desiccant 20 in sequence and enters the inside of the switch cabinet body 10. Then, the outside air passes through the annular belt-shaped desiccant 20 again and is discharged to the outside from the exhaust port 105, thereby taking out the heat inside the switch cabinet body 10 and achieving the heat dissipation treatment of the switch cabinet body 10. When the outside air passes through the annular belt-shaped desiccant 20 and enters the inside of the switch cabinet body 10, the water vapor in the outside air is absorbed by the annular belt-shaped desiccant 20, so that the air entering the inside of the switch cabinet body 10 remains dry, thereby preventing the outside air from entering the switch cabinet along with the water vapor. Inside the cabinet body 10, damage to the electrical components inside the switch cabinet body 10 is avoided, and when the outside air enters the inside of the switch cabinet body 10, the driving component 40 drives the annular belt-shaped desiccant 20 to operate between the air inlet 101 and the exhaust port 105, so that the part of the annular belt-shaped desiccant 20 that absorbs water vapor passes through the inside of the exhaust port 105. When the outside air passes through the annular belt-shaped desiccant 20 again and is discharged from the exhaust port 105, the outside air carrying the heat from the inside of the switch cabinet body 10 can heat and evaporate the water vapor on the annular belt-shaped desiccant 20, so that the annular belt-shaped desiccant 20 can remain dry when it subsequently operates to the inside of the air inlet 101, thereby achieving continuous absorption of water vapor.

[0034] See also Figure 2 as well as Figure 4 In one embodiment, the outer wall of the annular belt-shaped moisture absorbent body 20 is in contact with the inner side of the air inlet 101 and the exhaust port 105, and the fan assembly 30 includes a shell 302, fan blades 303, a rotating shaft 304 and a motor (not shown in the figure). The shell 302 is arranged on the inner side of the annular belt-shaped moisture absorbent body 20 near the air inlet 101, the rotating shaft 304 is arranged inside the shell 302 and is controlled to rotate by the motor, and the rotating shaft 304 is distributed axially along the shell 302. The fan blades 303 are provided in several groups, and several of the fan blades 303 are fixedly arranged outside the rotating shaft 304.

[0035] When the switch cabinet body 10 needs to dissipate heat, the motor is started, and the motor drives the rotating shaft 304 to rotate, and then drives the several fan blades 303 to rotate. When the several fan blades 303 rotate, the outside air is attracted and the outside air passes through the air inlet 101 and the annular belt-shaped desiccant 20 in turn and enters the interior of the switch cabinet body 10. After the outside air enters the interior of the switch cabinet body 10, it passes through the annular belt-shaped desiccant 20 again and is discharged from the exhaust port 105 to take away the heat inside the switch cabinet body 10.

[0036] See also Figure 2In one embodiment, the outer wall of the shell 302 is fixedly connected to the inner wall of the switch cabinet body 10 through a bracket plate 301.

[0037] See also Figure 1 as well as Figure 4 In one embodiment, a driven roller 102 is rotatably provided inside the air inlet 101, and a plurality of connecting rods 305 are fixedly provided on the rotating shaft 304. The driving assembly 40 includes an active roller 401, a ring plate 402, an annular rack 403, a support shaft 404 and a gear 405. The active roller 401 is provided on the inner side of the shell 302, and the end of the active roller 401 is rotatably connected to the inner wall of the shell 302 through the support shaft 404. The gear 404 is fixedly provided on the outside of the support shaft 404. The ends of the connecting rods 305 away from the rotating shaft 304 are fixedly connected to the inner wall of the ring plate 402. The annular rack 403 is fixedly provided on one side of the ring plate 402 and meshes with the gear 405. The active roller 401 and the driven roller 102 are respectively clamped on the inner and outer sides of the annular belt-shaped moisture-absorbing body 20.

[0038] When the motor drives the rotating shaft 304 to rotate and then drives the several fan blades 303 to rotate to introduce outside air into the switch cabinet body 10, the rotating shaft 304 can also drive the ring plate 402 to rotate through the several connecting rods 305. When the ring plate 402 rotates, it drives the annular rack 403 to rotate. When the annular rack 403 rotates, it drives the support shaft 404 and the active roller 401 to rotate through its meshing action with the gear 405. When the active roller 401 rotates, it cooperates with the driven roller 102 to drive the annular belt-shaped desiccant 20 to operate. When the annular belt-shaped desiccant 20 operates, the part of the water vapor absorbed by the annular belt-shaped desiccant 20 is transferred to the inside of the exhaust port 105, and then is heated by the hot air discharged from the exhaust port 105, so that the water vapor is evaporated, thereby realizing the drying treatment of the annular belt-shaped desiccant 20.

[0039] See also Figure 1 as well as Figure 3 In one embodiment, four groups of guide rollers 103 are provided inside the switch cabinet body 10, and the four groups of guide rollers 103 are used to provide support for the annular belt-shaped desiccant 20, so that the annular belt-shaped desiccant 20 forms a rectangular structure inside the switch cabinet body 10 that is in contact with the inner sides of the air inlet 101 and the exhaust port 105, so that the outside air can smoothly pass through the annular belt-shaped desiccant 20 when passing through the air inlet 101, so that the annular belt-shaped desiccant 20 can better absorb the water vapor in the air, and at the same time, it is convenient for the outside air to smoothly pass through the annular belt-shaped desiccant 20 again before being discharged from the exhaust port 105 with heat, thereby realizing the smooth evaporation of water vapor in the annular belt-shaped desiccant 20.

[0040] In one embodiment, the four groups of guide rollers 103 can be respectively arranged at the four corner positions inside the switch cabinet body 10. In this way, the annular belt-shaped desiccant 20 supported by the four groups of guide rollers 103 can be attached to the four side walls inside the switch cabinet body 10, thereby preventing the annular belt-shaped desiccant 20 from occupying the middle position inside the switch cabinet body 10, and avoiding the annular belt-shaped desiccant 20 from affecting the installation of other electrical components.

[0041] See also Figure 1 as well as Figure 3 In one embodiment, a support 104 is rotatably provided at the end of the guide roller 103 , and the support 104 is fixedly provided on the inner wall of the switch cabinet body 10 .

[0042] In one embodiment, the annular belt-shaped moisture absorbent body 20 can be a breathable water-absorbing sponge or a breathable non-woven fabric, which is not limited here.

[0043] In the embodiment of the present invention, when the switch cabinet body 10 needs to dissipate heat, the fan assembly 30 is started, and the fan assembly 30 draws the outside air so that the outside air passes through the air inlet 101 and the annular belt-shaped desiccant 20 in sequence and enters the inside of the switch cabinet body 10, and then the outside air passes through the annular belt-shaped desiccant 20 again and is discharged to the outside from the exhaust port 105, thereby taking out the heat inside the switch cabinet body 10 and achieving the heat dissipation treatment of the switch cabinet body 10; when the outside air passes through the annular belt-shaped desiccant 20 and enters the inside of the switch cabinet body 10, the water vapor in the outside air is absorbed by the annular belt-shaped desiccant 20, so that the air entering the inside of the switch cabinet body 10 remains dry, thereby preventing the outside air from entering the inside of the switch cabinet body 10 with water vapor, avoiding damage to the electrical components inside the switch cabinet body 10, and at the same time as the outside air enters the inside of the switch cabinet body 10, the driving assembly 40 drives the annular belt-shaped desiccant 20 between the air inlet 101 and the exhaust port The annular belt-shaped desiccant 20 operates between the openings 105, so that the part of the water vapor absorbed by the absorbing annular belt-shaped desiccant 20 passes through the inside of the exhaust port 105. When the outside air passes through the annular belt-shaped desiccant 20 again and is discharged from the exhaust port 105, the outside air carrying the heat from the internal of the switch cabinet body 10 can heat and evaporate the water vapor on the annular belt-shaped desiccant 20, so that the annular belt-shaped desiccant 20 can remain dry when it subsequently operates to the inside of the air inlet 101, thereby achieving continuous absorption of water vapor. Compared with the prior art, during the heat dissipation process of the switch cabinet body 10, the annular belt-shaped desiccant 20 absorbs the water vapor from the outside air, thereby preventing the outside air from carrying water vapor into the switch cabinet body 10, avoiding the damage of the electrical components inside the switch cabinet body 10 due to moisture, and during heat dissipation, the water vapor absorbed by the annular belt-shaped desiccant 20 can be evaporated with the help of the heat of the switch cabinet body 10 itself, so that the annular belt-shaped desiccant 20 can continue to absorb water, thereby improving the moisture-proof effect.

[0044] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. An electrical switching device, characterized in that It includes switch cabinet body, annular belt-shaped moisture absorber, fan assembly and drive assembly. The switch cabinet body is provided with an air inlet and an exhaust port, and the air inlet and the exhaust port are relatively distributed. The annular belt-shaped moisture absorber is arranged inside the switch cabinet body and is used to block the air inlet and the exhaust port. The fan assembly and the drive assembly are installed on the inner wall of the switch cabinet. The fan assembly is used to drive the outside air from the air inlet and the exhaust port through the switch cabinet body, The driving assembly is used to drive the annular belt-shaped moisture absorber to operate between the air inlet and the air outlet.

2. An electrical switching device according to claim 1, characterized in that: The outer wall of the annular belt-shaped moisture-absorbing body is in contact with the inner sides of the air inlet and the air outlet. The fan assembly includes a housing, fan blades, a rotating shaft and a motor. The shell is arranged on the inner side of the annular belt-shaped moisture-absorbing body near the air inlet, the rotating shaft is arranged inside the shell and is controlled to rotate by the motor, the rotating shaft is distributed along the axial direction of the shell, the fan blades are provided in several groups, and several of the fan blades are fixedly arranged outside the rotating shaft.

3. An electrical switching device according to claim 2, characterized in that: The outer wall of the shell is fixedly connected to the inner wall of the switch cabinet through a bracket plate.

4. An electrical switching device according to claim 2, characterized in that: A driven roller is provided for rotation inside the air inlet, and a plurality of connecting rods are fixed on the rotating shaft. The driving assembly includes a driving roller, a ring plate, a ring rack, a support shaft and a gear. The active roller is arranged on the inner side of the shell, and the end of the active roller is rotatably connected to the inner wall of the shell through the support shaft. The gear is fixedly arranged on the outside of the support shaft. One end of the connecting rods away from the rotating shaft is fixedly connected to the inner wall of the ring plate. The annular rack is fixedly arranged on one side of the ring plate and meshes with the gear. The active roller and the driven roller are respectively clamped on the inner and outer sides of the annular belt-shaped moisture absorbent body.

5. An electrical switching device according to claim 1, characterized in that: Four groups of guide rollers are provided inside the switch cabinet body, and the four groups of guide rollers are used to provide support for the annular belt-shaped moisture absorber, so that the annular belt-shaped moisture absorber forms a rectangular structure inside the switch cabinet body that is in contact with the inner sides of the air inlet and the exhaust port.

6. An electrical switching device according to claim 5, characterized in that: The end of the guide roller is rotatably provided with a support, and the support is fixedly provided on the inner wall of the switch cabinet.

7. An electrical switching device according to claim 1, characterized in that: The annular belt-shaped moisture-absorbing body is a breathable water-absorbing sponge or a breathable non-woven fabric.

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