CN206480962U - A kind of dehumidification type closed switch cabinet - Google Patents

Abstract

A dehumidification closed switch cabinet, belonging to the technical field of switch cabinets, the dehumidification device includes a cabinet body, a partition set in the cabinet body, and a dehumidification chamber set on the upper end of the cabinet body, and is characterized in that the air inlet joint and the air outlet The upper end of the joint is provided with a suction fan and a blowing fan respectively, and a filter device is provided in the ventilation duct between the suction fan and the blowing fan; a controller is provided at the center of the bottom of the dehumidification chamber; device; the inner wall of the upper cabinet is provided with a dryer, and the inner wall of the side of the cabinet is provided with a humidity sensor; the beneficial effect of the utility model is that the set dehumidification device can realize the daily dehumidification care in the cabinet through the operation of the suction fan and the blowing fan, The controller drives the dryer through the set temperature range to realize rapid drying process and alarm, which reduces safety hazards, and has high dehumidification efficiency and good dehumidification effect.

Description

A dehumidifying closed switch cabinet

technical field

The utility model relates to the technical field of switch cabinets, in particular to a dehumidifying closed switch cabinet.

Background technique

In recent years, with the rapid development of power grid construction and the continuous improvement of high-voltage switchgear technology, high-voltage switchgear has been widely used in 35kV and below power grid systems. The main advantages of high-voltage switchgear are compact overall design, small size, and good sealing. However, there are also abnormal heating inside the switchgear during operation. The switchgear is usually hermetically designed to prevent small animals from entering and damaging the power facilities. However, due to the relatively strict wind and poor ventilation of the cabinet body, air convection is hindered. According to on-site investigation and statistics, the dehumidification capacity of the existing switch cabinet dehumidification device is very small, resulting in high ambient humidity in the cabinet, which may easily cause discharge of the dynamic and static contacts of the switch. The safe operation of the equipment poses a great threat. If it is not dealt with and prevented in time, it will not only bring economic losses to power supply companies, but also bring production losses to power users and cause negative social impacts. Therefore, it is urgent to solve the problem of high ambient humidity in the cabinet to improve the healthy operation level of the equipment.

In order to solve the problem of high environmental humidity in the closed switch cabinet, the utility model patent with the patent number of CN201520612123.0 discloses an intelligent dehumidification device for the closed switch cabinet. , and then enter the dehumidification device through the vent hole. The desiccant filter element in the dehumidification device absorbs the moisture in the air to dehumidify the air. The air humidity affects the safe and stable operation of the closed switchgear, but the device only dehumidifies the environment in the low-voltage room through the air pump and the air duct, and the efficiency is low; and only when the humidity in the low-voltage room reaches a certain value, the described The desiccant filter element in the dehumidification device is easily polluted and damp, which affects the dehumidification effect.

To sum up, there is an urgent need to solve the current technical problems of dehumidification of closed switchgear, as well as the problems of low dehumidification efficiency, inconvenient daily maintenance of closed switchgear, and poor dehumidification effect.

Contents of the invention

In order to solve the above technical problems, the utility model provides a dehumidification closed switchgear, which effectively solves the problems of low dehumidification efficiency, impossibility of daily maintenance, and poor dehumidification effect in the current closed switchgear dehumidification device. The dehumidification device includes a cabinet The ventilation pipes, pipe joints and control circuit composed of suction fan, blower, controller, humidity sensor and drying machine are set in the dehumidification room at the upper end of the body. The dehumidification device realizes the daily dehumidification care in the cabinet through the operation of the suction fan and blower fan. , the controller drives the dryer through the set temperature range to realize rapid drying process and alarm alarm, which reduces safety hazards, and has high dehumidification efficiency and good dehumidification effect.

The technical solution adopted by the utility model to solve the technical problem is: the dehumidification closed switch cabinet includes a cabinet body, a transverse partition arranged in the cabinet body, and a dehumidification chamber arranged at the upper end of the cabinet body, characterized in that the The two ends of the bottom of the dehumidification chamber are provided with an air inlet and an air outlet, and the air inlet and the air outlet are connected by a ventilation pipe, and the two ends of the ventilation pipe are respectively provided with an air inlet joint and an air outlet joint, and the air inlet A suction fan and a blowing fan are respectively arranged in the ventilation duct at the upper end of the joint and the air outlet joint, and a filtering device is provided in the ventilation duct between the suction fan and the blowing fan; a controller is provided at the center of the bottom of the dehumidification chamber; The left and right sides of the dehumidification chamber are provided with relative ventilation windows, and an alarm device is provided on the outside side of the dehumidification chamber; the cabinet is arranged at the lower end of the dehumidification chamber, and the cabinet is separated into an upper cabinet by a partition provided with ventilation holes and the lower cabinet, the inner wall of the upper cabinet is provided with a dryer, and the side inner walls of the upper cabinet and the lower cabinet are respectively provided with humidity sensors; the dryer is connected in parallel with the alarm device, and then connected with the The suction fan and the blowing fan are connected in parallel to form a branch circuit, and then connected in series with the two humidity sensors connected in parallel, and then connected in series with the controller.

The air inlet joint described in the utility model is arranged on the upper part of the cabinet body, and its section is set to be circular, and the radius of the upper section is greater than the radius of the lower section.

The air outlet joint described in the utility model is arranged on the upper part of the cabinet body and one side of the air inlet joint, and its cross section is set to be circular, and the radius of the upper section is smaller than the radius of the lower section, and the surface of the air outlet joint is provided with evenly distributed through holes.

The filter device described in the utility model is arranged in a cylindrical shape, including a bracket with a cylindrical tubular structure with openings at both ends, a filter screen supported by the surface of the bracket, and a T-shaped handle symmetrically arranged on the side of the bracket, and the filter screen is provided with Dry medium.

The left and right sides of the lower cabinet described in the utility model are provided with relative louver air outlets.

The beneficial effect of the utility model is that the set dehumidification device realizes the daily dehumidification care in the cabinet through the operation of the suction fan and the blowing fan, and reduces potential safety hazards; a certain temperature range is set by the controller, and when the humidity in the cabinet exceeds the set The lower limit of the humidity can be quickly dried by the dryer. When the upper limit of the humidity is exceeded, the alarm will be activated to remind the maintenance personnel to cut off the power supply. The dehumidification device has high dehumidification efficiency and good dehumidification effect.

Description of drawings

Accompanying drawing 1 is a structural representation of the utility model;

Accompanying drawing 2 is the structural representation of filter device of the present utility model;

Accompanying drawing 3 is the circuit diagram of the utility model control circuit;

In the attached drawings: 1. Dehumidification chamber, 2. Cabinet body, 3. Partition board, 4. Humidity sensor, 5. Air inlet joint, 6. Suction fan, 7. Ventilation duct, 8. Filtration device, 9. Controller , 10. Dryer, 11. Alarm device, 12. Venetian outlet, 13. Ventilation window, 14. Blowing fan, 15. Air outlet joint, 31. Ventilation hole, 81. Bracket, 82. Filter screen, 83. T-shaped handle.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

In accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, described dehumidification closed switch cabinet, comprises cabinet body 2, the transverse partition board 3 that is set in cabinet body 2, the dehumidification chamber 1 that cabinet body 2 upper end is arranged, its It is characterized in that the two ends of the bottom of the dehumidification chamber 1 are provided with an air inlet and an air outlet, and the air inlet and the air outlet are connected by a ventilation pipe 7, and the two ends of the ventilation pipe 7 are respectively provided with an air inlet joint 5 and an air outlet. Air outlet joint 15, in the air duct 7 of described air inlet joint 5 and air outlet joint 15 upper ends, be respectively provided with suction fan 6 and blowing fan 14, in the air duct 7 between described suction fan 6 and blowing fan 14 A filter device 8 is provided; a controller 9 is provided at the center of the bottom of the dehumidification chamber 1; relative ventilation windows 13 are provided on the left and right sides of the dehumidification chamber 1, and an alarm device 11 is provided on the outside side of the dehumidification chamber 1; The cabinet 2 is arranged at the lower end of the dehumidification chamber 1, and the cabinet 2 is divided into an upper cabinet and a lower cabinet by a partition 3 provided with ventilation holes 31. A dryer 10 is arranged on the inner wall of the upper cabinet. and the side inner walls of the lower cabinet are respectively provided with humidity sensors 4; the drying machine 10 is connected in parallel with the alarm device 11, and then forms a branch circuit with the suction fan 6 and the blower fan 14 connected in series, and then connects with the The two humidity sensors 4 connected in parallel are connected in series with the controller 9 after being connected in series.

The air inlet joint 5 described in the utility model is arranged on the top of the cabinet body 2, and its cross section is set to be circular, and the radius of the upper section is greater than the radius of the lower section, and the effect is to make more gas enter the gas inlet.

The air outlet joint 15 described in the utility model is arranged on the upper part of the cabinet body 2 and one side of the air inlet joint 5, and its section is set to a circle, and the radius of the upper section is smaller than the radius of the lower section. The surface of the air outlet joint 15 is Evenly distributed through holes are provided to fully dry the gas in the ventilation duct 7, so that the dry gas can be evenly diffused, and avoid damage to the components of the cabinet body 2 due to excessive gas flow rate.

The filter device 8 described in the utility model is arranged in a cylindrical shape, including a support 81 of a cylindrical tubular structure with openings at both ends, a filter screen 82 supported by the surface of the support 81, a T-shaped handle 83 that is symmetrically arranged on the side of the support 81, and the Drying medium is stored in the filter screen 82, the filter device 8 can be manually inserted, and the T-shaped handle 83 is stuck on the outer wall of the ventilation duct 7 to play a role of positioning and clamping; when the drying medium in the filter screen 82 is saturated with moisture Finally, filter device 8 can be taken out manually, and the dry medium in filter screen 82 is aired, so that recycle.

The left and right sides of the lower cabinet described in the utility model are provided with relative louver tuyere 12, and the effect is to realize the air circulation of the lower cabinet.

As shown in accompanying drawing 3, the circuit principle of the present utility model is, when described closed switchgear works normally, suction fan 6 and blower fan 14 in the circuit work all the time, carry out the daily humidity care work of cabinet body 2; The humidity sensor inside the cabinet 2 detects the humidity in the cabinet 2, drives the contact of the dryer 10 to close according to the humidity lower limit set by the controller 9 in the dehumidification chamber 1, and performs rapid dehumidification work on the cabinet 2; when the cabinet 2 When the humidity inside exceeds the lower limit of humidity, the controller 9 drives the contact of the alarm device 11 to close to warn maintenance personnel to cut off the power, which plays a very good role in safety protection.

Claims (5)

1. a kind of dehumidification type closed switch cabinet, including cabinet（2）, cabinet（2）The lateral partitions of middle setting（3）, cabinet（2）Upper end The moist chamber of setting（1）, it is characterised in that the moist chamber（1）Bottom is provided at both ends with air inlet and gas outlet, it is described enter Gas port and gas outlet are by ventilation shaft（7）It is connected, ventilation shaft（7）Two ends be respectively arranged with air inlet connections（5）And outlet Mouth joint（15）, the air inlet connections（5）With gas outlet joint（15）The ventilation shaft of upper end（7）Inside it is respectively arranged with air draught Fan（6）And blower fan（14）, the blower fan（6）And blower fan（14）Between ventilation shaft（7）Inside it is provided with filter （8）；The moist chamber（1）The center of bottom is provided with controller（9）；The moist chamber（1）Left and right side is provided with phase To vent window（13）, moist chamber（1）Outside side is provided with warning device（11）；The cabinet（2）It is arranged on moist chamber （1）Lower end, cabinet（2）By being provided with air vent（31）Dividing plate（3）It is separated into top cabinet and bottom cabinet, top tank Drying machine is provided with the inwall of body（10）, humidity sensor is respectively arranged with the side inner walls of top cabinet and bottom cabinet （4）；The drying machine（10）With warning device（11）It is connected in parallel, then blower fan again with being cascaded（6）And blowing Fan（14）Parallel connection constitutes a branch road, then two humidity sensors again with being connected in parallel（4）With controller after series connection（9） Series connection.

2. dehumidification type closed switch cabinet according to claim 1, it is characterised in that the air inlet connections（5）It is arranged on Cabinet（2）Top, its section is arranged to circle, and upper section radius is more than lower section radius.

3. dehumidification type closed switch cabinet according to claim 1, it is characterised in that the gas outlet joint（15）It is arranged on Cabinet（2）Upper inlet port joint（5）Side, its section is arranged to circle, and upper section radius is less than lower section radius, The gas outlet joint（15）It is provided with equally distributed through hole.

4. dehumidification type closed switch cabinet according to claim 1, it is characterised in that filter（8）It is arranged to cylinder, The support of cylindrical barrel structure including both ends open（81）, support（81）The screen pack of surface support（82）, support（81） Symmetrically arranged T-handle sideways（83）, and the screen pack（82）Inside it is provided with dried medium.

5. dehumidification type closed switch cabinet according to claim 1, it is characterised in that the left and right side of the bottom cabinet is set It is equipped with relative air grille（12）.