CN205319666U - Cable pit ventilation unit that takes a breath - Google Patents

Abstract

The utility model discloses a ventilation device for a cable trench, which comprises a box body arranged on the cable trench, a plurality of cable brackets are arranged in the cable trench, and the cables are respectively distributed on the cable brackets; a box door is arranged on one side of the box body, The left wall and the right wall of the box body are respectively provided with several ventilation holes, and the bottom surface of the box body is provided with a grid bracket, and several semiconductor cooling chip groups are installed at intervals on the grid bracket; The top is provided with a solar battery panel, and the solar battery panel is connected to the charging controller and the storage battery arranged on the inner side of the top wall. Ventilation devices are installed at the vents. During the use of the utility model, the semiconductor refrigeration sheet group arranged at the bottom of the box can generate cold air in the cable trench and form cold and heat exchange convection, reducing the temperature in the cable trench.

Description

A ventilation device for cable trench

technical field

The utility model relates to the field of electric maintenance tools, in particular to a ventilation device for cable trenches.

Background technique

The cable trench is the corridor for the cables in the substation. If cables are compared to blood vessels, then the cable trench is the muscle tissue of the human body, and the cable trench is an important facility in the substation. In order to prevent fire prevention and prevent small animals from entering the cable trench and damaging the power cables, the cable trench of the substation is generally designed as a closed structure of cement cover. Due to poor ventilation conditions and high load, the temperature in the cable trench is too high. After measurement, the average temperature of the cable trench in summer reaches 45°C, which greatly reduces the service life of the cable in the trench.

For this reason, Chinese patent CN204497704U discloses a kind of ventilation box for cable trench, which includes a box body arranged on the cable trench, a box door is provided on the box body, and the left wall, right wall and rear wall of the box body are respectively provided with Several ventilation holes, the bottom surface of the box body is provided with several ventilation holes, the rear wall is provided with a ventilation opening, and a ventilation device is installed at the ventilation opening. Due to the adoption of the above technical scheme, the utility model has The structure is simple, practical, and economical, and its specific settings for ventilation and exhaust greatly reduce the heat dissipation problem in the cable trench. However, in the actual application process, the utility model has limited heat dissipation effect in the scorching summer ,needs improvement.

Utility model content

The purpose of this utility model is to provide a ventilation device for cable trench to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A ventilation device for a cable trench, comprising a box body arranged on the cable trench, a number of cable brackets are arranged in the cable trench, and the cables are respectively distributed on the cable brackets; a box door is arranged on one side of the box body, and the box body The left wall and the right wall are respectively provided with a number of ventilation holes, and the bottom surface of the box is provided with a grid bracket, and several semiconductor cooling chip groups are installed at intervals on the grid bracket; wherein the cold end of the semiconductor cooling chip group faces bottom, the hot end faces upward; the top wall of the box body is inclined, and a solar panel is arranged on the top of the top wall. The sheet group is connected with the storage battery through the controller, and a vent is provided on the rear wall of the box body, and a ventilation device is installed at the vent, and a rain-shielding grille is installed on the outside of the vent.

As a further technical solution of the utility model, the ventilation device is an exhaust fan installed inside the ventilation opening.

As a further technical solution of the present invention, the exhaust fan is electrically connected with an automatic control device.

As a further technical solution of the utility model, the automatic control device is a temperature sensor.

As a further technical solution of the utility model, the side of the top wall close to the box door is lower than the other side.

Compared with the prior art, during the use of the utility model, the semiconductive refrigerating sheet set at the bottom of the box can generate cold air in the cable trench and form cold and heat exchange convection, reducing the temperature in the cable trench, making it hot in summer The temperature in the cable trench is still at a normal level.

Description of drawings

Fig. 1 is a structural schematic diagram of a cable trench ventilation device of the present invention.

In the figure: 1-solar panel, 2-charge controller, 3-top wall, 4-air vent, 5-rain screen, 6-exhaust fan, 7-cabinet, 8-grid support, 9-cable trench , 10-cable bracket, 11-semiconductor refrigeration sheet group, 12-box door.

detailed description

The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

Please refer to Fig. 1, a kind of cable trench ventilating device, comprises the box body 7 that is arranged on the cable trench 9, is provided with some cable supports 10 in the cable trench 9, and cables are respectively distributed on the cable supports 10; Box body 7- The side is provided with box door 12, and the left wall of described box body 7, the right wall are respectively provided with several ventilation holes, and the bottom surface of described box body 7 is provided with a grid support 8, and on the grid support 8 intervals are installed A plurality of semiconductor refrigeration sheet groups 11; wherein the cold end of the semiconductor refrigeration sheet group 11 faces down, and the hot end faces upward; the top wall 3 of the box body 7 is arranged obliquely, and a solar cell panel 1 is arranged on the top of the top wall 3, The solar battery panel 1 is connected with the charging controller 2 and the storage battery arranged on the inner side of the top wall 3, the semiconductor refrigeration sheet group 11 is connected with the storage battery through the controller, and the rear wall of the box body 7 is provided with a vent 4, the said Ventilation opening 4 places are equipped with ventilation device, and the outside of described ventilation opening is equipped with rain-shielding grid 5.

In a preferred embodiment of the present utility model, the ventilation device is an exhaust fan 6 installed inside the vent, and the exhaust fan 6 is electrically connected with an automatic control device. The automatic control device is a temperature sensor;

In a preferred embodiment of the present utility model, the side of the top wall 3 close to the box door 3 is lower than the other side.

Because the ventilation box is used in the equipment area, it is exposed to the wind, the sun and the rain, so the aluminum plate that is simple to make, strong and durable, and not easy to rust should be selected as the material of the ventilation box body; if the cable trench 9 ventilation box is to exert its maximum effect, the exhaust fan must be installed. Open, and this just needs to provide power supply to exhaust fan 6. The required power supply of exhaust fan 6 is AC 220V voltage, which is solved by leading cables in the power supply box; certainly the work of exhaust fan 6 can be automatically controlled, such as controlling the operation of exhaust fan 6 by setting a temperature sensor. During use, The semiconductor cooling plate set at the bottom of the box can generate cold air in the cable trench and form cold and heat exchange convection, reducing the temperature in the cable trench, so that the temperature in the cable trench is still at a normal level in hot summer.

The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation. Within the scope of knowledge of those of ordinary skill in the art, various implementations can be made without departing from the purpose of this patent. kind of change.

Claims (5)

1. a cable trench ventilating device, it is characterised in that, comprise the casing being arranged on cable trench, in cable trench, it is provided with some cable beareves, cable is distributed on cable bearer respectively; Casing side is provided with case door, and Zuo Bi, You Bi of described casing is respectively equipped with some ventilation holes, and the bottom surface of described casing is provided with a grille mounting, and on grille mounting, interval is provided with some semi-conductor cooling piece groups; Wherein the cold junction of semi-conductor cooling piece group is down, and hot junction is upward; The roof of described casing is obliquely installed, the top of roof is provided with solar panel, solar panel be arranged on the charging controller inside roof and store battery is connected, described semi-conductor cooling piece group is connected with store battery by controller, the rear wall of casing is provided with ventilation opening, described ventilation opening place is provided with ventilation plant, and the outside of described ventilation opening is provided with the grid that keep off the rain.

2. a kind of cable trench ventilating device according to claim 1, it is characterised in that, described ventilation plant is the exhaust fan being arranged on inside ventilation opening.

3. a kind of cable trench ventilating device according to claim 2, it is characterised in that, described exhaust fan is electrically connected with automatic control device.

4. a kind of cable trench ventilating device according to claim 3, it is characterised in that, described automatic control device is temperature sensor.

5. a kind of cable trench ventilating device according to claim 1, it is characterised in that, described roof near the side of case door lower than another side.