CN111463672A

CN111463672A - Prevent outdoor switch board of condensation type high heat dissipation

Info

Publication number: CN111463672A
Application number: CN202010473062.XA
Authority: CN
Inventors: 戴根荣
Original assignee: 戴根荣
Current assignee: SHENGLI OILFIELD DAYUAN ENERGY-SAVING EQUIPMENT Co.,Ltd.
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-07-28
Anticipated expiration: 2040-05-29
Also published as: CN111463672B

Abstract

The invention belongs to the field of power distribution cabinets, and particularly relates to an anti-condensation type high-heat-dissipation outdoor power distribution cabinet which comprises a cabinet body, wherein a photovoltaic panel is installed at the upper end of the cabinet body, a plurality of first ventilation openings are formed in the side walls of two sides of the cabinet body, a lifting seat is installed on the inner bottom surface of the cabinet body, a waterproof cover which extends in the vertical direction of the cabinet body and is arranged in a cylindrical shape is installed at the upper end of the lifting seat, a plurality of second ventilation openings are formed in the waterproof cover, the first ventilation openings and the second ventilation openings are arranged in a staggered mode, a plurality of electric temperature difference sheets are embedded in the waterproof cover in an equidistant mode, the refrigerating surface of each electric temperature difference sheet is close to the inner ring of the waterproof. The waterproof cover can effectively prevent rainwater from entering the cabinet body to corrode electrical elements, moisture in air in the cabinet body can be condensed into water drops on the refrigerating surface of the thermoelectric piece, and the water drops are converged and quickly discharged out of the cabinet body, so that the water drops are effectively prevented from being condensed and attached to the surfaces of the electrical elements.

Description

Prevent outdoor switch board of condensation type high heat dissipation

Technical Field

The invention belongs to the field of power distribution cabinets, and particularly relates to an anti-condensation high-heat-dissipation outdoor power distribution cabinet.

Background

The upper limit value of the ambient temperature when the electrical equipment designed and manufactured according to the national standard operates should not exceed 40 ℃, and the temperature in the box sometimes exceeds 60 ℃ due to direct sunlight, heat reflection of cement ground and heat generated by the equipment in the box in summer, so that the high temperature easily causes the insulation aging of coils and leads of the electrical equipment to break down and burn out; the contact resistance of the contact of the electric appliance is increased due to overhigh temperature, the increase of the contact resistance aggravates heating, the vicious circle finally causes the burning of the contact, and meanwhile, the overhigh temperature can also influence the stability of the protection performance of the electric appliance, the reliability of the action and the accuracy of the metering.

The shutter is equipped with in its both sides mostly to current switch board, so that form air convection, and penetrate directly at sunshine, during the higher weather of temperature, the air nature convection heat dissipation effect that the shutter played is not obvious, and when rainy weather, the potential safety hazard in the rainwater gets into the switch board by the shutter has been increased, and simultaneously, because high temperature weather, air humidity is higher, because there is the difference in temperature switch board and external world, moisture in the air easily condenses into dew on electrical components surface, cause the corruption to electrical components, easily cause the circuit short circuit, the electric leakage scheduling problem.

Therefore, the anti-condensation high-heat-dissipation outdoor power distribution cabinet is provided to solve the problems.

Disclosure of Invention

The invention aims to provide the anti-condensation high-heat-dissipation outdoor power distribution cabinet with good waterproof and heat-dissipation effects aiming at the problem of poor waterproof and heat-dissipation effects.

In order to achieve the purpose, the invention adopts the following technical scheme: an anti-condensation type outdoor high-heat-dissipation power distribution cabinet comprises a cabinet body, wherein a photovoltaic panel is installed at the upper end of the cabinet body, a plurality of first ventilation openings are formed in the side walls of two sides of the cabinet body, a lifting seat is installed on the inner bottom surface of the cabinet body, a waterproof cover which is arranged in a cylindrical shape and extends along the vertical direction of the cabinet body is installed at the upper end of the lifting seat, a plurality of second ventilation openings are arranged in the waterproof cover, the first ventilation openings and the second ventilation openings are arranged in a staggered mode, a plurality of electric temperature difference sheets are embedded in the waterproof cover in an equidistant distribution mode, the refrigerating surface of each electric temperature difference sheet is close to the inner ring of the waterproof cover, the heating surface is close to the outer ring of the waterproof cover, a ventilation cavity is formed between the side wall of the outer ring of the waterproof cover and the cabinet body, a vertically-arranged lead screw is fixedly, the upper end of the screw rod nut is rotatably connected with the inner top surface of the cabinet body through a memory spring.

The invention has the advantages that:

when weather, partial rainwater gets into the intracavity of taking a breath by first vent under wind-force effect, because second vent and the crisscross setting of first vent, the rainwater continues to remove along the straight line and can't get into in the second vent, and can strike on the surface of buckler to discharge along the buckler outer wall flow-down, played the effect of preventing wind and rain.

When the temperature is higher in fine days, the air humidity is larger, the sunlight irradiates on the photovoltaic panel, the photovoltaic panel plays a good sun-shading role, the light energy is converted into the electric energy to supply power for the thermoelectric piece, the refrigerating surface of the thermoelectric piece is close to an electric appliance element inside the waterproof cover, the temperature of the electric appliance device inside the waterproof cover is effectively reduced, the heating surface is close to the first ventilation opening, the temperature inside the power distribution cabinet can be quickly led out, and a good cooling and heat dissipation effect is achieved.

Meanwhile, when the temperature is high in fine days, the humidity of the air in the cabinet body is high, the water content is high, and because the temperature of the refrigerating surface of the thermoelectric piece is low, the water in the air in the cabinet body is condensed into water drops on the refrigerating surface of the thermoelectric piece and is converged to be quickly discharged out of the cabinet body, so that the problems of corrosion, short circuit and the like caused by the condensation and adhesion of the water drops on the surface of an electrical element are effectively prevented.

The temperature of the air exchange cavity is higher because the air exchange cavity is close to the heating surface of the thermoelectric piece, when the temperature reaches the abnormal temperature of the memory spring, the memory spring extends and drives the screw rod nut to move downwards, and the screw rod in threaded fit with the memory spring cannot rotate, so that the screw rod nut drives the fan to rotate in the downward movement process, so that air in the air exchange cavity flows rapidly along the vertical direction, the exchange of hotter air in the air exchange cavity with the outside is promoted, the cooling effect of the thermoelectric piece is facilitated, according to Bernoulli principle, when the temperature of the air flows at the same height, the flow rate is higher, the pressure is lower, the air in the air exchange cavity flows rapidly, the pressure is reduced, water drops condensed on the inner side wall of the waterproof cover can be sucked into the air exchange cavity through the second vent, the water discharging speed outside the cabinet.

Preferably, the buckler is cylindric setting, just the buckler is formed by two cover plates that are the semicircle arcuation setting end to end concatenation, is convenient for assemble and dismantle.

Preferably, the lifting seat is arranged in a circular truncated cone shape, drain holes are formed in the waterproof cover and the lower end of the cabinet body, and water in the cabinet body can be quickly drained through the drain holes.

Preferably, the fixed cover of being equipped with the ring gear on the outer lane lateral wall of buckler, the outer coaxial arrangement of screw-nut has the gear, gear and ring gear meshing, when screw-nut rotated, drive the synchronous rotation of gear, then by the ring gear drive buckler rotation of meshing with it, under the inertial force effect, the drop of water that promotes to condense on the buckler inside wall takes place to slide, is favorable to the drop of water to discharge outside the cabinet body by the wash port.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment 1 of an anti-condensation high-heat-dissipation outdoor power distribution cabinet provided by the invention;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is a schematic side structure view of a waterproof cover in embodiment 1 of the anti-condensation high-heat-dissipation outdoor power distribution cabinet provided by the invention;

fig. 4 is a schematic structural diagram of an embodiment 2 of the anti-condensation high-heat-dissipation outdoor power distribution cabinet provided by the invention.

In the figure, 1 cabinet body; 2 a photovoltaic panel; 3 a first vent; 4 lifting seat; 5, a waterproof cover; 6 a second ventilation opening; 7 an electric temperature difference sheet; 8, an air exchange cavity; 9, a screw rod; 10, a screw nut; 11 a memory spring; 12 a drain hole; 13, a gear ring; 14 gears; 15 fan.

Detailed Description

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

Example 1

As shown in fig. 1-3, an anti-condensation type outdoor high-heat-dissipation power distribution cabinet comprises a cabinet body 1, a photovoltaic panel 2 is installed at the upper end of the cabinet body 1, a plurality of first ventilation openings 3 are formed in the side walls of two sides of the cabinet body 1, a lifting seat 4 is installed on the inner bottom surface of the cabinet body 1, a waterproof cover 5 which is arranged in a cylindrical mode along the vertical direction of the cabinet body 1 in an extending mode is installed at the upper end of the lifting seat 4, the waterproof cover 5 is arranged in a cylindrical mode and is formed by splicing two cover plates which are arranged in a semicircular arc shape end to end, assembling and disassembling are convenient, a plurality of second ventilation openings 6 are arranged in the waterproof cover 5, the first ventilation openings 3 and the second ventilation openings 6 are arranged in a staggered mode, the lifting seat 4 is arranged in a circular truncated cone shape, drain holes 12 are formed in the waterproof cover 5 and the lower end.

The equidistance distributes in the buckler 5 and inlays and is equipped with polylith thermoelectric piece 7, the refrigeration face of thermoelectric piece 7 is close to the inner circle of buckler 5, the face that generates heat is close to the outer lane of buckler 5, the outer lane lateral wall of buckler 5 forms air exchange chamber 8 with the cabinet body 1, the lead screw 9 of the vertical setting of top surface fixedly connected with of air exchange chamber 8, lead screw 9 external screw thread fit has screw-nut 10, coaxial arrangement has fan 1 outside screw-nut 10, memory spring 11 is passed through to screw-nut 10's upper end and is connected with the interior top surface rotation of the cabinet body 1, memory spring 11 is formed by the coiling of CuZnAl memory alloy silk, be in normal condition when the normal atmospheric temperature, extend when the temperature is higher than its.

The working principle of the embodiment is as follows: in the weather of wind and rain, partial rainwater enters into the ventilation cavity 8 from the first ventilation opening 3 under the action of wind, and because the second ventilation opening 6 and the first ventilation opening 3 are arranged in a staggered mode, the rainwater cannot enter the second ventilation opening 6 when continuously moving in the ventilation cavity 8 along a straight line, and can collide with the surface of the waterproof cover 5 and flow down along the outer wall of the waterproof cover 5 to be discharged from the drainage hole 12, so that the effect of wind and rain prevention is achieved.

When the temperature is higher in fine days, air humidity is greater, sunshine shines on photovoltaic board 2, and photovoltaic board 2 plays good sunshade effect, turns into the light energy electric energy simultaneously, for the power supply of electricity generation difference in temperature piece 7, the refrigeration face of electricity generation difference in temperature piece 7 is close to the electrical components of buckler 5 inside, effectively reduces electrical equipment's in the buckler 5 temperature, and the face of generating heat is close to first vent 3 and can derive the inside temperature of switch board fast, plays good cooling radiating effect.

Meanwhile, when the temperature is high in a sunny day, the humidity of the air in the cabinet body 1 is high, the water content is high, and because the temperature of the refrigerating surface of the thermoelectric piece 7 is low, the water in the air in the cabinet body 1 is condensed into water drops on the refrigerating surface of the thermoelectric piece 7 and is converged and quickly discharged out of the cabinet body 1, so that the problems of corrosion, short circuit and the like caused by the condensation and adhesion of the water drops on the surface of an electrical element are effectively prevented.

The temperature of the ventilation cavity 8 is high because the ventilation cavity is close to the heating surface of the thermoelectric piece 7, when the temperature reaches the abnormal temperature of the memory spring 11, the memory spring 11 extends and drives the screw rod nut 10 to move downwards, and the screw rod 9 in threaded fit with the memory spring cannot rotate, so that the screw rod nut 10 drives the fan 15 to rotate in the downward movement process, so that the air in the ventilation cavity 8 rapidly flows along the vertical direction, the exchange of hotter air in the ventilation cavity 8 with the outside is promoted, the cooling effect of the heating surface of the thermoelectric piece 7 is facilitated, according to Bernoulli's principle, when the air flows at equal height, the flow rate is larger, the pressure is smaller, the air in the ventilation cavity 8 rapidly flows, the pressure is reduced, water drops condensed on the inner side wall of the waterproof cover 5 can be sucked into the ventilation cavity 8 through the second ventilation opening 6, the speed of discharging water out of the cabinet body 1 is accelerated, and the waterproof effect of.

Example 2

As shown in fig. 4, the present embodiment is different from embodiment 1 in that: the outer ring side wall of the waterproof cover 5 is fixedly sleeved with a gear ring 13, the gear ring 13 is arranged in a long cylindrical shape, a gear 14 is coaxially arranged outside the screw rod nut 10, and the gear 14 is meshed with the gear ring 13.

In this embodiment, when the lead screw nut 10 rotates, the gear 14 is driven to rotate synchronously, and then the gear ring 13 meshed with the gear drives the waterproof cover 5 to rotate, so that the condensed water drops on the inner side wall of the waterproof cover 5 are promoted to slide under the action of inertia force, which is beneficial for the water drops to drop downwards and be discharged out of the cabinet body 1 through the water discharge hole 12.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a prevent outdoor switch board of condensation type high heat dissipation, includes the cabinet body (1), its characterized in that, photovoltaic board (2) are installed to the upper end of the cabinet body (1), many first vents (3) have all been seted up on the lateral wall of the cabinet body (1) both sides, the interior bottom surface of the cabinet body (1) is installed and is risen seat (4), the upper end of rising seat (4) is installed and is followed cabinet body (1) vertical direction extension and be the buckler (5) of tube-shape setting, be equipped with many second vents (6) in buckler (5), many first vent (3) and many second vents (6) are all crisscross to be set up, equidistance distribution inlays in buckler (5) and is equipped with polylith thermoelectric piece (7), the refrigeration face of thermoelectric piece (7) is close to the inner circle of buckler (5), and the face that generates heat is close to the outer lane of buckler (5), the outer lane lateral wall of buckler (5) forms air exchange chamber (8) with the cabinet body (1), the lead screw (9) of the vertical setting of top surface fixedly connected with of air exchange chamber (8), lead screw (9) external screw thread fit has lead screw nut (10), coaxial arrangement has fan (15) outside lead screw nut (10), memory spring (11) are passed through to the upper end of lead screw nut (10) and the interior top surface rotation of the cabinet body (1) is connected.

2. The outdoor power distribution cabinet with condensation prevention and high heat dissipation performance as defined in claim 1, wherein the waterproof cover (5) is cylindrical, and the waterproof cover (5) is formed by splicing two cover plates arranged in a semicircular arc shape end to end.

3. The outdoor power distribution cabinet with the condensation prevention and high heat dissipation performance as claimed in claim 1, wherein the lifting seat (4) is arranged in a circular truncated cone shape, and drain holes (12) are formed in the waterproof cover (5) and the lower end of the cabinet body (1).

4. The outdoor power distribution cabinet with high heat dissipation and condensation prevention performance as claimed in claim 1, wherein a gear ring (13) is fixedly sleeved on the outer ring side wall of the waterproof cover (5), a gear (14) is coaxially installed outside the screw nut (10), and the gear (14) is meshed with the gear ring (13).