CN212258032U - Air internal circulation device of electrical cabinet - Google Patents

Abstract

The utility model discloses a regulator cubicle air inner loop device, include: an upper device and a lower device (the upper device comprises an insulated metal shell, a controller, a fan, a sensor and a drying box, and the lower device comprises an insulated metal shell, a fan and a heating plate); the upper device is arranged at the upper part of the electrical cabinet; the lower device is arranged at the lower part of the electrical cabinet; the upper device and the lower device control the internal circulation of air through temperature difference. The utility model provides a regulator cubicle air inner loop device adopts insulating material sealed regulator cubicle business turn over line mouth and the cabinet body and the ground gap to stop humid air from the source and get into the cabinet body. The temperature in the cabinet is well controlled, the condensation generating condition is the temperature difference, the condensation value is well held, through two sensors arranged on an upper device and a lower device, when the temperature difference value exceeds a set value, the fan starting work of the upper device and the lower device realizes air convection, so that air is stirred, the condensation generating condition is destroyed, a heating plate is arranged on the lower device, and when the temperature in the cabinet is lower than the set value, the heating plate and the fan starting work of the lower device start the heating plate, the temperature in the cabinet is raised, the set temperature is reached, and the work is stopped.

Description

Air internal circulation device of electrical cabinet

Technical Field

The utility model relates to an regulator cubicle technical field, more specifically the say so and relate to a regulator cubicle air inner circulation device.

Background

The electrical cabinet adopts a fully-enclosed structure, air chambers are mutually independent, outgoing lines are cable outgoing lines, moisture from a cable trench is easy to accumulate in the cabinet, ventilation in the cabinet is not smooth, and when the environmental humidity changes, condensation is easy to generate, so that the insulation strength is reduced. If the insulating material is not good in material quality, air humidity is high, dirt is serious, moisture absorption and condensation can be caused in operation, and surface leakage current is increased. When the medium is affected with damp, dirt or damaged, free electrons on the surface of the medium are increased due to the damp, so that the conduction current is increased, the insulation resistance is correspondingly reduced, and partial creeping discharge flashover is caused when the insulation is reduced to a certain degree.

2. Dew formed on a secondary wiring terminal row in a terminal box mechanism box corrodes a metal conductive part on the terminal row, alternating current and direct current short circuit grounding is easily caused after the metal conductive part is corroded seriously or other impurities such as dust are mixed in the metal conductive part, direct current grounding causes great harm to stable operation of a secondary system of a transformer substation, practical operation experience shows that direct current grounding is mostly caused by water attached to a charged part, the dew even causes short circuit between two secondary wires on the terminal row more seriously, and if the dew is just a switch tripping circuit, misoperation of a switch can be immediately caused, and a power failure accident is caused.

4. The high-voltage chamber generally pays more attention to ventilation so that the indoor temperature and humidity are greatly influenced by the outdoor environment, condensation is easily generated in the indoor high-voltage switch cabinet, the waterproof performance of an insulating porcelain bottle in the cabinet is not considered, the insulativity of the insulating porcelain bottle can be reduced if dew exists on the insulating porcelain bottle, the creepage or flashover phenomenon can be caused even, the normal operation of equipment is seriously influenced, particularly, some equipment is in a shutdown state, the internal temperature of the equipment is lower, condensation is more easily formed on the surface of the equipment, and at the moment, accidents are very easily caused once the power is transmitted.

The existing anti-condensation device mostly adopts equipment such as a temperature controller, a heater and the like, can not solve condensation from the source, has short service life and power consumption, and can not play a good protection role on equipment.

Therefore, it is an urgent need to solve the problem of the art to provide an air circulation device for an electrical cabinet, which can better control the temperature and humidity in the cabinet so as to prevent the generation of condensation.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a regulator cubicle air inner loop device adopts insulating material sealed regulator cubicle business turn over line mouth and the cabinet body and ground gap to stop moist air from the source and get into the cabinet body. The temperature in the cabinet is well controlled, the condensation generating condition is the temperature difference, and through the upper device sensor and the lower device sensor, when the temperature difference value exceeds a set value, the upper device fan and the lower device fan (the fan works to have a cooling function, an inlet fan is adopted, the service life is long) are started to work to realize air convection, so that air is stirred, and the condensation generating condition is damaged.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electrical cabinet internal air circulation apparatus comprising: an upper device and a lower device; the upper device is arranged at the upper part of the electrical cabinet; the lower device is arranged at the lower part of the electrical cabinet; the upper and lower devices control air circulation through temperature difference.

Preferably, in the above-mentioned apparatus for circulating air in an electrical cabinet, the upper apparatus includes: the temperature and humidity sensor comprises an upper insulating metal shell, a controller, an upper temperature and humidity sensor and an upper fan; an upper air outlet is formed in the bottom of the upper insulating metal shell, and the upper temperature and humidity sensor and the upper fan are connected with the controller and are installed in the upper insulating metal shell.

Preferably, in the above-mentioned electrical cabinet air internal circulation device, the device further includes: drying the box; the drying box is arranged inside the upper insulating metal shell.

Preferably, in the above-mentioned apparatus for circulating air in an electrical cabinet, the lower apparatus includes: the temperature and humidity sensor comprises a lower insulating metal shell, a lower fan and a lower temperature and humidity sensor; the top of the lower insulating metal shell is provided with a lower air outlet; the lower fan and the lower temperature and humidity sensor are connected with the controller and are arranged in the lower insulating metal shell.

Preferably, in the air internal circulation device of the electrical cabinet, the lower device further comprises a pre-installed heating sheet; the pre-installed heating sheet is electrically connected with the controller.

Preferably, in the air internal circulation device of the electrical cabinet, the upper device is provided with a mounting lug.

Preferably, in the air internal circulation device of the electrical cabinet, a bracket is arranged at the bottom of the lower device shell.

According to the technical scheme, compare with prior art, the utility model discloses a regulator cubicle air inner loop device, wherein, the regulator cubicle produces the condensation, and the leading cause depends on the influence of temperature and external environment, adopts insulating sealing material to implement sealedly to regulator cubicle business turn over line mouth and gap, stops humid air admission cabinet body from the source. An air internal circulation device is arranged in the cabinet, no hole needs to be formed, condensation is generated mainly due to temperature difference, the temperature in the cabinet is controlled, the dew point value is mastered, and the device is divided into an upper device and a lower device 2. When the temperature difference value of the 2 temperature sensors exceeds a set value (the fan works to have a cooling function), the starting work realizes air convection, vector air supply, dynamic balance is kept, air is stirred, condensation generating conditions are damaged, the temperature and the humidity are controlled, and the problem of condensation is solved. (in winter, when the temperature is extremely low and lower than a set value, the heating sheet is started to heat, the lower device fan starts to work synchronously, and when the temperature rises to the set value, the heating sheet and the lower device fan stop working, and the indoor temperature is adjusted to be balanced.)

Drawings

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

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses regulator cubicle air inner loop device adopts insulating material sealed regulator cubicle business turn over line mouth and the cabinet body and ground gap, stops humid air admission cabinet body from the source. The temperature in the cabinet is well controlled, and the condition for generating condensation is the temperature difference, and 2 sensors are arranged on the upper device and the lower device. When the detected temperature difference value exceeds a set value, the upper and lower fans in the device (the fans work to have a cooling function, an inlet fan is adopted, the service life is long) are started to work to realize air convection, so that air is stirred, and condensation generating conditions are damaged.

An electrical cabinet internal air circulation apparatus comprising: an upper device 1 and a lower device 2; the upper device 1 is arranged at the upper part of the electric cabinet; the lower device 2 is arranged at the lower part of the electrical cabinet; the upper and lower devices 2 control air circulation by temperature difference.

In order to further optimize the above technical solution, the upper apparatus 1 includes: an upper insulating metal shell 11, a controller 12, an upper temperature and humidity sensor and an upper fan 13; an upper air outlet 14 is formed in the bottom of the upper insulating metal shell 11, and the upper temperature and humidity sensor and the upper fan 13 are connected with the controller 12 and are installed in the upper insulating metal shell 11.

In order to further optimize the above technical solution, the method further comprises: drying the box; the drying box is placed inside the upper insulated metal casing 11.

In order to further optimize the above technical solution, the lower device 2 comprises: a lower insulated metal shell 21, a lower fan 22 and a lower temperature and humidity sensor; the top of the lower insulated metal shell 21 is provided with a lower air outlet 25; the lower fan 22 and the lower temperature and humidity sensor are both connected with the controller 12 and are installed in the lower insulated metal shell 21.

In order to further optimize the above technical solution, the lower device 2 further comprises a pre-installed heating sheet 24; the pre-heater chip 24 is electrically connected to the controller 12.

In order to further optimize the above technical solution, the upper device 1 is provided with mounting ears 15.

In order to further optimize the above technical solution, the bottom of the housing of the lower device 2 is provided with a bracket 23.

The specific working process is as follows: when the temperature difference of the upper device sensor and the lower device sensor exceeds a preset value, the fans in the upper device and the lower device start to work, air convection is realized, air is stirred, and the temperature difference in the electrical cabinet is balanced. When temperature extremely low condition in winter, the controller starts down device pre-installation heating plate, and the fan is put in the lower device and is started work in step, and when the temperature rose the setting value in the cabinet, stop work kept the indoor temperature balanced, the utility model discloses a temperature difference in the balanced regulator cubicle to realize destroying the condensation production condition, fundamentally solves the problem that produces the condensation in the regulator cubicle.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. An electrical cabinet internal air circulation device, comprising: an upper device and a lower device;

the upper device includes: the temperature and humidity sensor comprises an upper insulating metal shell, a controller, an upper temperature and humidity sensor and an upper fan;

the lower device includes: the temperature and humidity sensor comprises a lower insulating metal shell, a lower fan and a lower temperature and humidity sensor;

the upper device is arranged at the upper part of the electrical cabinet; the lower device is arranged at the lower part of the electrical cabinet;

the upper and lower devices control air circulation through temperature difference.

2. The air internal circulation device of the electrical cabinet according to claim 1, wherein an upper air outlet is formed at the bottom of the upper insulated metal casing, and the upper temperature and humidity sensor and the upper fan are both connected to the controller and mounted in the upper insulated metal casing.

3. The regulator cubicle air internal circulation apparatus of claim 2 further comprising: drying the box; the drying box is arranged inside the upper insulating metal shell.

4. The air internal circulation device of the electrical cabinet according to claim 2, wherein a lower air outlet is arranged at the top of the lower insulated metal shell; the lower fan and the lower temperature and humidity sensor are connected with the controller and are arranged in the lower insulating metal shell.

5. The electrical cabinet air internal circulation apparatus of claim 3, wherein the lower apparatus further comprises a pre-installed heater strip; the pre-installed heating sheet is electrically connected with the controller.

6. The air internal circulation device of the electrical cabinet according to claim 2, wherein the upper device is provided with mounting lugs.

7. The air internal circulation device of the electrical cabinet according to claim 3, wherein a bracket is arranged at the bottom of the lower device shell.

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