CN111342372A

CN111342372A - Dehumidification switch board

Info

Publication number: CN111342372A
Application number: CN202010298168.0A
Authority: CN
Inventors: 杨海卫
Original assignee: Individual
Current assignee: Fujian Datang International Ningde Power Generation Co Ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-06-26
Anticipated expiration: 2040-04-16
Also published as: CN111342372B

Abstract

The invention discloses a dehumidification power distribution cabinet which comprises a base and a box body arranged at the upper end of the base, wherein a plurality of fans are fixed at the inner bottom of the box body, two ventilation grooves are symmetrically formed in the side wall of the box body, the inner walls of the two ventilation grooves are respectively provided with a ventilation hole in a penetrating mode, an opening and closing push rod is fixed on the inner wall of one end, far away from the corresponding ventilation hole, of each ventilation groove, a sealing plate is fixed on the extending end of each opening and closing push rod, and a humidity sensor and a temperature sensor are fixed on the inner top of the box body. Has the advantages that: drive the lead screw through timing motor and rotate to make the slider shift up, realize the purpose of timing, if the inside humidity of box obtains controlling in the time quantum that moves to the top on the slider, show that the increase of outside humidity is not continuous, the inside operation of box normally goes on, if humidity does not obtain quick control, the ventilation hole will be sealed to the closing plate, avoids inside outside humid air gets into the box, makes the inside humidity of box no longer improve.

Description

Dehumidification switch board

Technical Field

The invention relates to the technical field of power distribution cabinets, in particular to a dehumidification power distribution cabinet.

Background

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

The switch board can receive the great influence of external environment when outdoor use, especially will lead to the life reduction of its inside electrical apparatus original paper after receiving the influence of temperature and humidity, and present switch board does not have good means to the control of humidity, leads to the inside humidity of switch board to rise by a wide margin and influence components and parts life in the time easily when facing overcast and rainy weather, consequently needs a switch board that can effectively reduce inside humidity urgently.

Disclosure of Invention

The invention aims to solve the problem that in the prior art, the damage to the service life of components is difficult to reduce after the humidity in a power distribution cabinet is increased, and provides a dehumidification power distribution cabinet.

In order to achieve the purpose, the invention adopts the following technical scheme: a dehumidification power distribution cabinet comprises a base and a cabinet body arranged at the upper end of the base, wherein a plurality of fans are fixed at the inner bottom of the cabinet body, two ventilation grooves are symmetrically formed in the side wall of the cabinet body, the inner walls of the two ventilation grooves are respectively provided with a ventilation hole in a penetrating way, an opening and closing push rod is fixed on the inner wall of one end of each ventilation groove, which is far away from the corresponding ventilation hole, an extension end of each opening and closing push rod is fixed with a sealing plate, a humidity sensor and a temperature sensor are fixed at the inner top of the cabinet body, a plurality of dehumidification grooves are formed in the two symmetrical side walls of the cabinet body in a penetrating way, a dehumidification structure is arranged inside each dehumidification groove, a timing opening and closing mechanism is arranged inside each groove, a plurality of drying grooves are symmetrically formed in the outer walls at the two sides of the cabinet body, and a drying push rod is fixed, every the extension end of drying push rod all is fixed with the drying cabinet, the outer wall of box is fixed with the outer enclosed plate of two symmetry settings, two the upper and lower both ends lateral wall of outer enclosed plate all runs through and has seted up the humidification hole.

In foretell dehumidification switch board, the dehumidification structure is including seting up the mounting groove at dehumidification inslot top, the inner wall of mounting groove is fixed with the switching-over motor, the output shaft of switching-over motor is fixed with the dehumidification case, the lateral wall of dehumidification case is fixed with the heat-conducting plate.

In foretell dehumidification switch board, the timing starting and stopping mechanism is including being fixed in the timing motor of timing time slot bottom, the output shaft of timing motor rotates through one-way bearing and is connected with the lead screw, lead screw circumference lateral wall is fixed with and connects the electric piece, the circumference lateral wall threaded connection of lead screw has the slider, the swivelling chute has been seted up at the top of timing time slot, the interior top of swivelling chute and the top that connects the electric piece and the mountain both ends lateral wall of slider all are fixed with the contact.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, the rapid flow of air inside and outside the box body is realized through the rotation of the fan, so that the heat inside and outside the box body is rapidly exchanged, the influence of overhigh temperature inside the box body on the service life of electronic components is effectively avoided, the service life of the components inside the box body is ensured, and the maintenance and replacement cost is reduced;

2. according to the invention, the humidity inside the box body is sensed through the humidity sensor, and the dehumidifying box is timely rotated into the box body when the humidity inside the box body is increased, so that the humidity inside the box body is reduced, and the influence of high humidity on the service life of electronic components is avoided;

3. in the invention, the screw rod is driven to rotate by the timing motor, so that the slide block moves upwards, the purpose of timing is realized, if the humidity inside the box body is controlled in a time period when the slide block moves to the top, the increase of the external humidity is not continuous, the operation inside the box body is normally carried out, and if the humidity is not rapidly controlled, the sealing plate seals the vent hole, so that external wet air is prevented from entering the inside of the box body, the humidity inside the box body is not increased any more, and further, the continuous damage of the continuously increased humidity to components is avoided;

4. according to the invention, when the humidity in the box body is controlled after being treated for a certain time, the reversing motor rotates to enable the heat-conducting plate to be positioned in the box body, so that heat accumulated in the box body in the dehumidification process is absorbed by the heat-conducting plate and is used for heating the drying agent in the dehumidification box, and the heat is dissipated by the drying agent absorbing the evaporation of water, so that the heat in the box body is continuously dissipated while the drying agent is dried, the dissipation of the heat in the box body in the external humidity process is ensured, and the components in the box body are not damaged by the humidity and the temperature.

Drawings

Fig. 1 is a schematic structural diagram of a dehumidification power distribution cabinet according to the present invention;

fig. 2 is a side sectional view of a dehumidification power distribution cabinet according to the present invention.

In the figure: the device comprises a base 1, a box body 2, a fan 3, a ventilation groove 4, a ventilation hole 5, an opening and closing push rod 6, a sealing plate 7, a humidity sensor 8, a temperature sensor 9, a dehumidification groove 10, a mounting groove 11, a reversing motor 12, a dehumidification box 13, a heat conduction plate 14, an outer sealing plate 15, a humidification hole 16, a drying groove 17, a drying push rod 18, a drying box 19, a rotary groove 20, a timing motor 21, a screw rod 22, a sliding block 23, an electricity contact block 24, a contact piece 25 and a time slot 26.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-2, a dehumidification power distribution cabinet comprises a base 1 and a box body 2 installed at the upper end of the base 1, wherein a plurality of fans 3 are fixed at the inner bottom of the box body 2, two ventilation grooves 4 are symmetrically formed in the side wall of the box body 2, ventilation holes 5 are formed through the inner walls of the two ventilation grooves 4, opening and closing push rods 6 are fixed on the inner walls of the ends of the two ventilation grooves 4 far away from the corresponding ventilation holes 5, closing plates 7 are fixed on the extension ends of the two opening and closing push rods 6, a humidity sensor 8 and a temperature sensor 9 are fixed on the inner top of the box body 2, a plurality of dehumidification grooves 10 are formed through the two symmetric side walls of the box body 2, a dehumidification structure is arranged inside each dehumidification groove 10, a timing groove 26 is formed in the inner wall of the box body 2, a plurality of drying grooves 17 are symmetrically formed in the outer walls at two sides of the box body 2, and a drying push rod 18 is, the extension end of each drying push rod 18 is fixed with a drying box 19, the outer wall of the box body 2 is fixed with two symmetrically-arranged outer sealing plates 15, the side walls of the upper end and the lower end of each outer sealing plate 15 penetrate through the drying box and are provided with humidifying holes 16, and the positions of the humidifying holes 16 correspond to the positions of the drying boxes 19.

The dehumidification structure is including offering the mounting groove 11 at dehumidification inslot 10 internal top, and the inner wall of mounting groove 11 is fixed with switching-over motor 12, and the output shaft of switching-over motor 12 is fixed with dehumidification case 13, and the lateral wall of dehumidification case 13 is fixed with heat-conducting plate 14, and

dehumidification case

13 and 19 inside all packs have the desicator calcium oxide granule to the surface of dehumidification case 13 and drying cabinet 19 all begins to have a plurality of holes that are used for moisture to volatilize.

The timing opening and closing mechanism comprises a timing motor 21 fixed at the bottom in a timing slot 26, an output shaft of the timing motor 21 is rotatably connected with a screw rod 22 through a one-way bearing, a power connection block 24 is fixed on the circumferential side wall of the screw rod 22, a sliding block 23 is in threaded connection with the circumferential side wall of the screw rod 22, a rotary slot 20 is formed in the top of the timing slot 26, and a contact piece 25 is fixed on the inner top of the rotary slot 20, the top of the power connection block 24 and the side walls of the two ends of the mountain of the sliding block.

In the invention, when the components in the box body 2 work normally, the opening and closing push rod 6 is in a contraction state, namely the closing plate 7 does not shield the ventilation hole 5, the internal and external spaces of the box body 2 can realize ventilation and heat dissipation through the ventilation hole 5, and the airflow velocity is accelerated under the action of the fan 3, so that the heat exchange inside and outside the box body 2 is accelerated, the temperature in the box body 2 is kept stable, and the service life of an electronic element is not influenced by overheating;

in rainy days, the humidity of the outside air is high, the humidity inside the box body 2 can be changed due to the exchange of the air in the heat dissipation process, the service life of components can be seriously influenced due to the increase of the humidity, when the humidity inside the box body 2 exceeds a limit value, the humidity sensor 8 gives electric signals to the reversing motor 12 and the timing motor 21 to enable the reversing motor 12 and the timing motor 21 to rotate, in this state, the dehumidification box 13 rotates downwards under the driving of the reversing motor 12 to face the inside of the box body 2, and the timing motor 21 drives the screw rod 22 to rotate, so that the slide block 23 cannot move upwards;

in the process that the sliding block 23 moves upwards, the drying agent in the dehumidifying box 13 continuously absorbs moisture in the air in the box body 2, so that the humidity in the box body 2 is reduced, if the humidity in the box body 2 is obviously reduced and controlled before the sliding block 23 moves to the rotary groove 20, the humidity sensor 8 outputs an electric signal, so that the reversing motor 12 rotates, the timing motor 21 stops rotating, in this state, the sliding block 23 falls under the action of gravity and drives the screw rod 22 to rotate reversely, so as to return to the original position, and the drying agent acts again to dry after the excessive humidity of the water vapor accumulated in the subsequent box body 2 is increased;

if the humidity in the box body 2 does not drop to the safe humidity after the sliding block 23 moves to the rotary groove 20, the contact piece 25 on the sliding block 23 is in contact with the contact piece 25 at the top of the rotary groove 20, so that the opening and closing push rod 6 is electrically extended, the sealing plate 7 moves to the position of the vent hole 5 to seal the vent hole 5, and external humid air is prevented from continuously entering the box body 2; the contact 25 on the sliding block 23 will contact the contact 25 on the top of the rotary groove 20 and simultaneously extend the drying push rod 18 so that the drying oven 19 can block the humidifying hole 16, thereby the inner space of the outer closing plate 15 is in a relatively closed and dry environment;

after the humidity in the box body 2 is reduced, the humidity sensor 8 gives an electric signal to the reversing motor 12 to make the reversing motor rotate, so that the dehumidifying box 13 faces the outer closing plate 15 and the heat conducting plate 14 faces the inside of the box body 2, meanwhile, the timing motor 21 stops rotating, the sliding block 23 moves downwards under the action of gravity, as the heat exchange efficiency between the box body 2 and the outside is extremely low in the period of drying in the box body 2, more heat is accumulated in the box body 2, when the heat conducting plate 14 faces the inside of the box body 2, the heat is quickly absorbed by the heat conducting plate 14, most of the heat is concentrated on the heat conducting plate 14, the heat conducting plate 14 heats the dehumidifying box 13, the moisture absorbed by the desiccant in the dehumidifying box 13 under the heating action is quickly evaporated, and as the inner space of the outer closing plate 15 is dry, the moisture in the desiccant in the dehumidifying box 13 can quickly diffuse in the air, heat accumulated in the dehumidification process can be quickly dissipated, so that the influence of continuous accumulation of heat on the service life of an electric appliance element is avoided;

after the slider 23 is completely reset, the contact 25 at the lower end of the slider 23 contacts with the contact 25 at the upper end of the power connection block 24, so that the drying push rod 18 is contracted, thereby enabling the inside and outside of the outer closure plate 15 to exchange heat and humidity through the humidifying holes 16, because the heat accumulated in the box body 2 is radiated and the subsequent heat accumulation needs a certain time, the service life of the components can not be influenced in a short time by the heat in the box body 2, and the heat-conducting plate 14 will still absorb heat during the accumulation of heat inside the cabinet 2 and use it to heat the desiccant inside the dehumidification tank 13, when the external space is kept at a high humidity, the desiccant inside the dehumidification tank 13 will always contain a certain amount of moisture, therefore, the heat inside the box body 2 absorbed by the heat conduction plate 14 is always absorbed by the heat conduction plate, so that the heat is conveyed, and the stability of the temperature inside the box body 2 is ensured;

until outside air's humidity reduces, the inside drier of dehumidification case 13 can't absorb moisture, when making the absorptive heat of heat-conducting plate 14 be difficult to give off through the mode of moisture evaporation, the inside heat of box 2 will accumulate and make the inside temperature of box 2 rise, and then make temperature sensor 9 give and open and close the push rod 6 signal of telecommunication, make and open and close the push rod 6 shrink, and then make closing plate 7 no longer shelter from ventilation hole 5, make the inside and outside recovery air flow of box 2 and heat exchange, and outside air humidity this moment is lower, can not influence the life-span of the inside components and parts of box 2.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The dehumidification power distribution cabinet comprises a base (1) and a box body (2) arranged at the upper end of the base (1), and is characterized in that a plurality of fans (3) are fixed at the inner bottom of the box body (2), two ventilation grooves (4) are symmetrically formed in the side wall of the box body (2), ventilation holes (5) are formed in the inner walls of the two ventilation grooves (4) in a penetrating mode, opening and closing push rods (6) are fixed on the inner walls of the ends, far away from the corresponding ventilation holes (5), of the two ventilation grooves (4), closing plates (7) are fixed on the extension ends of the opening and closing push rods (6), humidity sensors (8) and temperature sensors (9) are fixed on the inner top of the box body (2), a plurality of dehumidification grooves (10) are formed in the symmetrical side walls of the box body (2), a dehumidification structure is arranged inside each dehumidification groove (10), and a time counting groove (26) is formed in the inner wall of the box body (2), the timing opening and closing mechanism is arranged inside the timing groove (26), a plurality of drying grooves (17) are symmetrically formed in the outer walls of the two sides of the box body (2), each drying groove (17) is fixedly provided with a drying push rod (18), each drying push rod (18) is fixedly provided with a drying box (19) at the extending end, two symmetrically-arranged outer sealing plates (15) are fixedly arranged on the outer wall of the box body (2), and the side walls of the upper end and the lower end of each outer sealing plate (15) penetrate through and are provided with a humidifying hole (16).

2. The dehumidification power distribution cabinet according to claim 1, wherein the dehumidification structure comprises a mounting groove (11) formed in the inner top of the dehumidification groove (10), a reversing motor (12) is fixed to the inner wall of the mounting groove (11), a dehumidification box (13) is fixed to an output shaft of the reversing motor (12), and a heat conduction plate (14) is fixed to the side wall of the dehumidification box (13).

3. The dehumidification power distribution cabinet according to claim 1, wherein the timing opening and closing mechanism comprises a timing motor (21) fixed at the inner bottom of a timing slot (26), an output shaft of the timing motor (21) is rotatably connected with a lead screw (22) through a one-way bearing, an electric connection block (24) is fixed on the circumferential side wall of the lead screw (22), a sliding block (23) is in threaded connection with the circumferential side wall of the lead screw (22), a rotary slot (20) is formed in the top of the timing slot (26), and a contact piece (25) is fixed on each of the inner top of the rotary slot (20), the top of the electric connection block (24) and the side walls of the two ends of the downward slope of the sliding block (23).