CN216487599U

CN216487599U - Box transformer dehydrating unit of wind-powered electricity generation field

Info

Publication number: CN216487599U
Application number: CN202121952887.6U
Authority: CN
Inventors: 田祥; 李淑君; 董超
Original assignee: Cgn Hubei Integrated Energy Service Co ltd
Current assignee: Cgn Hubei Integrated Energy Service Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-05-10
Anticipated expiration: 2031-08-19

Abstract

The utility model relates to the technical field of transformer dehumidification, in particular to a box-type transformer dehumidification device for a wind power plant. The internal control box is provided with a power supply, and the dehumidifying device is connected with the power supply of the internal control box through a cable. The utility model can permanently solve the condensation problem by greatly reducing the air humidity and simultaneously drying the internal circulation of the air. The box-type transformer dehumidifier is stable in operation, convenient to install and maintain, and safe risks are effectively reduced due to the fact that the box-type transformer dehumidifier is arranged in the low-voltage chamber. After the dehumidifier of the box-type transformer is added, the internal humidity is reduced to 35.8% from average 90%, and the problem of condensation inside the box-type transformer is completely solved.

Description

Box transformer dehydrating unit of wind-powered electricity generation field

Technical Field

The utility model relates to the technical field of transformer dehumidification, in particular to a box-type transformer dehumidification device for a wind power plant.

Background

In the prior art, part of box-type transformers installed at high altitude have annual air humidity up to 70% due to high altitude climate, especially up to more than 90% in winter. The indoor humidity detection system of the box-type transformer is displayed above 90%, the top and the side faces of the box-type transformer are subjected to large-area condensation due to overhigh humidity, a large number of electrical devices are arranged in a low-voltage chamber of the box-type transformer, excessive condensation water drops can cause damage of the electrical devices to cause tripping and electric shock danger to personnel, and therefore the box-type transformer dehumidification device for the wind power plant is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dehumidifying device for a box-type transformer of a wind power plant, which can be used for greatly reducing the air humidity and simultaneously drying the internal circulation of air, and solving the problems of tripping caused by damage of electrical equipment and electric shock danger of personnel due to excessive condensation water drops in the existing box-type transformer.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a box transformer dehydrating unit of wind-powered electricity generation field, is including installing the dehydrating unit inside the box, dehydrating unit passes through the inside control box power supply of box, dehydrating unit passes through the inside moisture of moisture discharge pipe discharge box.

Preferably, the internal control box is provided with a power supply, and the dehumidifying device is connected with the power supply of the internal control box through a cable.

Preferably, the cable is provided with a circuit breaker meeting the rated capacity of the dehumidifying device.

Preferably, the dehumidification device is installed at the position close to the heat dissipation holes inside the box body, and a protection partition is installed outside the dehumidification device.

Preferably, the moisture exhaust pipe is connected with an air outlet on the box body, and a protective net is arranged on the air outlet.

Preferably, an anti-freezing protective cover is arranged at the position, corresponding to the air outlet, on the box body.

Compared with the prior art, the utility model has the following beneficial effects:

this technical scheme is through reducing air humidity by a wide margin while dry air internal circulation, can solve the condensation problem forever. The box-type transformer dehumidifier is stable in operation, convenient to install and maintain, and safe risks are effectively reduced due to the fact that the box-type transformer dehumidifier is arranged in the low-voltage chamber. After the dehumidifier of the box-type transformer is added, the internal humidity is reduced to 35.8% from average 90%, and the problem of condensation inside the box-type transformer is completely solved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

In the figure: 1. a box body; 2. a dehumidifying device; 3. an internal control box; 4. a moisture exhaust pipe; 5. a cable; 6. a protective barrier; 7. a protective net; 8. an anti-freezing protective cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in figure 1, the box-type transformer dehumidification device for the wind power plant comprises a dehumidification device 2 installed inside a box body 1, wherein the dehumidification device 2 is powered through an internal control box 3 of the box body 1, and the dehumidification device 2 discharges moisture inside the box body 1 through a moisture discharge pipe. The dehumidifying device 2 heats the pumped-in wet air through the internal constant temperature heater to achieve the purpose of drying the air, and meanwhile, part of untreated wet air is discharged out of the box type transformer chamber, so that the problem of condensation can be effectively avoided after the air is dried in an internal circulation mode.

The dehumidifier is added to control the air humidity of the high-low voltage chamber of the box-type transformer, and the moisture in the air is reduced so as to eliminate the condensation problem. The relative humidity of the air in the high-low voltage chamber of the box-type transformer is controlled below 40 percent. The dehumidifying capacity of the dehumidifier should be at least not less than 0.35 kg/h. The power consumption requirement of the dehumidifier is controlled to be 500-1000W, the power consumption is too high due to overlarge power consumption, and the field dehumidification requirement cannot be met due to undersize power consumption. The dehumidifier should have a fault automatic detection function, if a fault occurs, the machine can automatically detect the reason and display a corresponding fault code, and the maintenance is convenient. The main system of the dehumidifier has high temperature protection, overload protection, phase sequence automatic protection, high-low voltage protection and out-of-range automatic power-off protection. The device has a time delay protection function during operation, and prevents the machine from being damaged due to the abnormal power supply. The device displays the temperature and the humidity of the indoor air, the humidity is set from 36% -90%, the humidity to be controlled is set, the device can be automatically stopped when the set humidity is reached, and can be automatically started to dehumidify when the set humidity is higher than the set humidity, so that full-automatic control is realized. The device housing should be reliably grounded.

The performance parameter requirements of the dehumidifier are as follows: the dehumidification efficiency is not less than 0.35 kg/h; the running power of the dehumidifier is 500-1000W; the current of the heater of the dehumidifier is less than 3.5A; the power supply of the dehumidifier is 220V/50 Hz; the treated air volume is not less than 60m³H; the working noise is less than 54 dB; according to the size of the internal space of the box-type transformer, the dehumidifier is not more than 350mm in length, 280mm in width and 270mm in height.

Selecting the installation position of the dehumidifier: considering that the space of the high-voltage chamber of the box-type transformer is narrow and small, and the situation of discharging caused by the fact that the high-voltage cable is too close to the high-voltage cable, the installation position of the dehumidifier is fixed in the low-voltage chamber of the box-type transformer. The installation position is selected to be installed in a blank ground close to a 10cm door opening position and a left box body 1 after a left cabinet door of a low-pressure chamber of the box-type transformer is opened, in order to ensure the internal heat dissipation of a high-pressure side, the middle of a heat dissipation hole is fixed, a dehumidifier processing air outlet is connected with a hose with the diameter of 100mm, and the hose penetrates through the high-pressure chamber from the top of a partition wall between two high-pressure chambers and the low-pressure chamber; in order to ensure air circulation, the bottom of the separation wall is provided with vent holes. The dehumidification system adopts backplate screw punching both ends or base ligature fixed, prevents that the dehumidification system from not hard up the off-position in the operation process.

Selection of an installation power supply of the dehumidifier: the power supply adopts the 220V power supply in the internal control box 3 at the low-voltage side of the box-type transformer nearby, and because a 220V power socket is directly arranged in the control box, the conditions of fault short circuit, overload and the like of equipment are prevented, a wire diameter cable meeting the maximum power requirement of the equipment is recommended to be used, and a protection air switch meeting the rated capacity is added, so that the safety of the internal equipment is ensured. Because dehumidification system mounted position is got the electricity position apart from the switch board and is had about 3m, need use cable 5 to paste the base and fix along box 1 straight walk behind the line on cable 5 is walked the line. The internal control box 3 is provided with a power supply, and the dehumidifying device 2 is connected with the power supply of the internal control box 3 through a cable 5. The cable is provided with a circuit breaker meeting the rated capacity of the dehumidifying device 2. The conditions of fault short circuit, overload and the like of the equipment can be prevented, so that the safety of the internal equipment is ensured.

The dehumidifying device 2 is installed at a position close to the heat radiation holes inside the case 1, and a protective partition 6 is installed outside the dehumidifying device 2. The moisture exhaust pipe 4 is connected with an air outlet on the box body 1, and a protective net 7 is arranged on the air outlet. Can prevent small animals with holes from drilling into the hole. The position that corresponds the air outlet on through box 1 is provided with frostproofing protecting cover 8, and frostproofing protecting cover 8 size is greater than the air outlet, supports through a plurality of supports, plays to hide wind and keep out rain, and avoids debris to fall into the effect of air outlet, does not influence the moisture simultaneously and discharges, can avoid the risk of freezing stifled pipe in the moisture blast pipe 4 winter.

When the dehumidifying device is used, the dehumidifying device 2 blows dry air to a high-pressure chamber after wet air in the box-type transformer passes through a heating separation measure, and residual wet air is discharged out of the box-type transformer. The dehumidifying device 2 heats the pumped-in wet air through the internal constant temperature heater to achieve the purpose of drying the air, and meanwhile, part of untreated wet air is discharged out of the box type transformer chamber, so that the problem of condensation can be effectively avoided after the air is dried in an internal circulation mode.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a box transformer dehydrating unit of wind-powered electricity generation field which characterized in that: the dehumidification device comprises a dehumidification device (2) arranged inside a box body (1), wherein the dehumidification device (2) is powered through an internal control box (3) of the box body (1), and moisture in the box body (1) is discharged through a moisture exhaust pipe (4) by the dehumidification device (2);

the internal control box (3) is provided with a power supply, and the dehumidifying device (2) is connected with the power supply of the internal control box (3) through a cable (5);

the cable (5) is provided with a circuit breaker meeting the rated capacity of the dehumidifying device (2);

the dehumidification device (2) is arranged in the box body (1) at a position close to the heat dissipation holes, and a protective partition plate (6) is arranged outside the dehumidification device (2);

the moisture exhaust pipe (4) is connected with an air outlet on the box body (1), and a protective net (7) is arranged on the air outlet;

and an anti-freezing protective cover (8) is arranged on the box body (1) corresponding to the air outlet.