阅读说明：本技术 一种箱式变压器及其通风控制方法 (Box-type transformer and ventilation control method thereof ) 是由 华致然 黄梦豪 李龙 谭兴煜 江嘉楠 阮家鑫 李泊佳 于 2021-10-09 设计创作，主要内容包括：本申请公开了一种箱式变压器及其通风控制方法,该箱式变压器包括：主控器、箱体、风机、转动刷与双层滤网；箱体上设置有多个通风口；多个通风口呈上下分布；各通风口沿外侧往内侧方向依次设置双层滤网、转动刷与风机；双层滤网内层为细滤网,外层为粗滤网；转动刷抵接所述双层滤网,且通过棘轮机构与所述风机传动连接；风机沿正向转动时,所述通风口为出风状态；风机沿反向转动时,所述通风口为进风状态；棘轮机构用于限制所述转动刷反向转动；主控器设置于所述箱体内,且与所述风机电连接,用于控制所述风机的启停。通过在箱体的通风口上设置双层滤网,并在棘轮机构连接转动刷与风机,可以有效减少灰尘飞絮进入箱体内。(The application discloses box transformer and ventilation control method thereof, this box transformer includes: the device comprises a main controller, a box body, a fan, a rotating brush and a double-layer filter screen; a plurality of ventilation openings are formed in the box body; the plurality of ventilation openings are distributed up and down; each ventilation opening is sequentially provided with a double-layer filter screen, a rotary brush and a fan along the direction from the outer side to the inner side; the inner layer of the double-layer filter screen is a fine filter screen, and the outer layer is a coarse filter screen; the rotating brush is abutted against the double-layer filter screen and is in transmission connection with the fan through a ratchet mechanism; when the fan rotates along the positive direction, the vent is in an air outlet state; when the fan rotates along the reverse direction, the ventilation opening is in an air inlet state; the ratchet mechanism is used for limiting the reverse rotation of the rotating brush; the main controller is arranged in the box body, is electrically connected with the fan and is used for controlling the starting and stopping of the fan. Through set up double-deck filter screen on the vent at the box to connect rotation brush and fan at ratchet, can effectively reduce the dust and fly wadding into the box.)

1. A box transformer, comprising: the device comprises a main controller, a box body, a fan, a rotating brush and a double-layer filter screen;

a plurality of ventilation openings are formed in the box body;

a plurality of the ventilation openings are distributed up and down;

the double-layer filter screen, the rotary brush and the fan are sequentially arranged in each ventilation opening along the direction from the outer side to the inner side;

the inner layer of the double-layer filter screen is a fine filter screen, and the outer layer of the double-layer filter screen is a coarse filter screen;

the rotating brush is abutted against the double-layer filter screen and is in transmission connection with the fan through a ratchet mechanism;

when the fan rotates along the positive direction, the air outlet is in an air outlet state;

when the fan rotates along the reverse direction, the ventilation opening is in an air inlet state;

the ratchet mechanism is used for limiting the reverse rotation of the rotating brush;

the main controller is arranged in the box body, is electrically connected with the fan and is used for controlling the starting and stopping of the fan.

2. The box transformer of claim 1, further comprising a temperature sensor;

the temperature sensor is arranged in the box body, is electrically connected with the main controller and is used for sensing the temperature in the box body.

3. The box transformer of claim 1, further comprising an air switch and a manual switch;

and the air switch and the manual switch are both connected with a main power supply of the circuit in the box body.

4. The box-type transformer of claim 1, wherein a rain cover is further arranged on the box body;

the rain cover is arc-shaped, the first end faces horizontally, and the second end faces downwards;

the first end of rain-proof cover with the vent is connected.

5. The box transformer of claim 4, wherein the coarse screen is disposed at the second end of the rain shield;

the fine filter screen is arranged at the first end of the rain cover;

the rotating brush is abutted against the fine filter screen.

6. A ventilation control method for a box-type transformer, which is applied to the box-type transformer according to any one of claims 1 to 5, wherein the box-type transformer comprises a temperature sensor arranged in a box body;

the ventilation control method comprises the following steps:

s1, acquiring the temperature in the box body before starting, and executing the step S2 when the temperature before starting exceeds the set starting temperature value;

s2, keeping the fan in the vent at the upper end to rotate along the reverse direction, and keeping the fan in the vent at the lower end to rotate along the forward direction;

s3, calculating the execution time length of the step S2, and when the execution time length of the step S2 exceeds the first set time length, entering the step S4;

s4, keeping the fan in the vent at the upper end to rotate in the forward direction, keeping the fan in the vent at the lower end to rotate in the reverse direction, simultaneously obtaining the temperature after starting in the box body, judging whether the temperature after starting is larger than a set stop temperature value or not, if so, closing each fan and returning to the step S1, and if not, entering the step S5;

s5, calculating the execution time length of step S4, and returning to step S2 when the execution time length of step S4 exceeds the second set time length.

Technical Field

The application relates to the technical field of transformers, in particular to a box type transformer and a ventilation control method thereof.

Background

The box-type transformer is a transformer which is designed by centralizing a traditional transformer in a box-type shell and is mostly located in an industrial area. Take the cotton spinning industry district as an example, outside a lot of cotton fibre all can be blown the mill by the fan of mill for contain a large amount of dust flying cotton fibre in the air, these filthy can produce very obvious filthy and adhesion on distribution equipment in box transformer, and when the air becomes moist, these flying cotton fibre can absorb moisture, and then reduce the dielectric strength of equipment, lead to the circuit trip even.

The existing box-type transformer shell only has a vent and a dust filtering net, cannot meet the ventilation and dust prevention standards of industrial areas and other places, and is easily blocked by dust flying through the addition of an external vent, so that the long-term effect cannot be guaranteed.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a box-type transformer and a ventilation control method thereof, which are used to solve the problem that the ventilation opening of the existing box-type transformer located in an industrial area or the like is easily blocked.

To achieve the above technical object, a first aspect of the present application provides a box-type transformer, including: the device comprises a main controller, a box body, a fan, a rotating brush and a double-layer filter screen;

a plurality of ventilation openings are formed in the box body;

a plurality of the ventilation openings are distributed up and down;

the double-layer filter screen, the rotary brush and the fan are sequentially arranged in each ventilation opening along the direction from the outer side to the inner side;

the inner layer of the double-layer filter screen is a fine filter screen, and the outer layer of the double-layer filter screen is a coarse filter screen;

the rotating brush is abutted against the double-layer filter screen and is in transmission connection with the fan through a ratchet mechanism;

when the fan rotates along the positive direction, the air outlet is in an air outlet state;

when the fan rotates along the reverse direction, the ventilation opening is in an air inlet state;

the ratchet mechanism is used for limiting the reverse rotation of the rotating brush;

the main controller is arranged in the box body, is electrically connected with the fan and is used for controlling the starting and stopping of the fan.

Further, the device also comprises a temperature sensor;

the temperature sensor is arranged in the box body, is electrically connected with the main controller and is used for sensing the temperature in the box body.

Further, the device also comprises an air switch and a manual switch;

and the air switch and the manual switch are both connected with a main power supply of the circuit in the box body.

Furthermore, a rain cover is arranged on the box body;

the rain cover is arc-shaped, the first end faces horizontally, and the second end faces downwards;

the first end of rain-proof cover with the vent is connected.

Further, the coarse filter screen is arranged at the second end of the rain-proof cover;

the fine filter screen is arranged at the first end of the rain cover;

the rotating brush is abutted against the fine filter screen.

A second aspect of the present application provides a ventilation control method for a box-type transformer, which is applied to any one of the box-type transformers described above, wherein the box-type transformer includes a temperature sensor disposed in a box body;

the ventilation control method comprises the following steps:

s1, acquiring the temperature in the box body before starting, and executing the step S2 when the temperature before starting exceeds the set starting temperature value;

s2, keeping the fan in the vent at the upper end to rotate along the reverse direction, and keeping the fan in the vent at the lower end to rotate along the forward direction;

s3, calculating the execution time length of the step S2, and when the execution time length of the step S2 exceeds the first set time length, entering the step S4;

s4, keeping the fan in the vent at the upper end to rotate in the forward direction, keeping the fan in the vent at the lower end to rotate in the reverse direction, simultaneously obtaining the temperature after starting in the box body, judging whether the temperature after starting is larger than a set stop temperature value or not, if so, closing each fan and returning to the step S1, and if not, entering the step S5;

s5, calculating the execution time length of step S4, and returning to step S2 when the execution time length of step S4 exceeds the second set time length.

According to the technical scheme, the double-layer filter screen is arranged on the ventilation opening of the box body, so that larger dust flying flocs and smaller dust flying flocs can be blocked simultaneously; and, connect rotation brush and fan through ratchet, can only start rotation brush and clean double-deck filter screen when the vent air-out, effectively reduce the dust and fly into the box, solve the current box transformer vent that is located industrial area etc. and be blockked up easily problem.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a front view of a box-type transformer according to an embodiment of the present application;

fig. 2 is a side perspective view of a box transformer according to an embodiment of the present application;

fig. 3 is a diagram of a ratchet mechanism in a box transformer according to an embodiment of the present disclosure;

fig. 4 is a flowchart of a ventilation control method for a box-type transformer according to an embodiment of the present disclosure;

in the figure: 1. a box body 11 and a ventilation opening; 12. a rain cover; 2. a fan; 3. rotating the brush; 4. double-layer filter screens; 41. a fine filter screen; 42. coarse filtration; 5. a ratchet mechanism.

Detailed Description

The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are some, but not all embodiments of the present application. 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 scope of protection claimed herein.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 3, a box transformer provided in an embodiment of the present application includes: a main controller (not shown), a box body 1, a fan 2, a rotating brush 3 and a double-layer filter screen 4; a plurality of ventilation openings 11 are arranged on the box body 1; the plurality of ventilation openings 11 are distributed up and down; each ventilation opening 11 is sequentially provided with a double-layer filter screen 4, a rotary brush 3 and a fan 2 along the direction from the outer side to the inner side; the inner layer of the double-layer filter screen 4 is a fine filter screen 41, and the outer layer is a coarse filter screen 42; the rotating brush 3 is abutted against the double-layer filter screen 4 and is in transmission connection with the fan 2 through a ratchet mechanism 5; when the fan 2 rotates in the forward direction, the air outlet 11 is in an air outlet state; when the fan 2 rotates in the reverse direction, the air inlet 11 is in an air inlet state; the ratchet mechanism 5 is used for limiting the reverse rotation of the rotating brush 3; the master controller is arranged in the box body 1, is electrically connected with the fan 2 and is used for controlling the start and stop of the fan 2.

Specifically, the case 1 includes a plurality of side ends, and the ventilation openings 11 may be provided on the respective side ends, for example, may be provided at the front and rear ends of the case 1, thereby achieving front and rear ventilation while achieving up and down ventilation.

The inventor finds that the ventilation device of the existing box-type transformer is generally provided with a dust filter screen on a ventilation opening, but the dust filter screen has an unsatisfactory effect of blocking dust flying, and if the aperture of the dust filter screen is larger, smaller dust flying is easy to enter a transformer chamber; if the caliber is smaller, if the box-type transformer is positioned in some cotton spinning industrial areas with more dust flying cotton fibers, the dust filter screen is easily blocked by external dirt. And because the humidity of south weather, a lot of flying cotton filth can adhere on dust filter net and equipment, can lead to ventilation effect greatly reduced and equipment insulation to reduce in the past in this long term, cause equipment trouble. Therefore, in this embodiment, by providing the double-layer filter screen 4, the coarse filter screen 42 located outside can block the larger dust flying flocs, the fine filter screen 41 can avoid the smaller dust flying flocs entering the transformer chamber, and the two cooperate with each other, so that the number of times of replacing the filter screen can be reduced without affecting the air circulation inside the box 1, and the material cost and the labor cost can be saved.

Meanwhile, by arranging the ratchet mechanism 5 and the rotating brush 3, the rotating brush 3 can be started only when the fan rotates forwards, namely the ventilation opening 11 is in an air-out state, so that dust attached to the double-layer filter screen 4 due to wet weather and the like can fly into the air.

Further, a temperature sensor (not shown) is also included; the temperature sensor is arranged in the box body 1, is electrically connected with the main controller and is used for sensing the temperature in the box body 1.

Through the cooperation of master controller and temperature-sensing ware, can in time open fan 2 when 1 inside temperature of box reaches the set temperature, in time the heat dissipation ventilates and can the energy can be saved when need not start.

Further, the device also comprises an air switch and a manual switch; the air switch and the manual switch are both connected with a circuit main power supply in the box body 1.

Specifically, the air switch is a circuit breaker which automatically opens and closes when the rated current is exceeded, and the manual switch is a circuit breaker which is manually controlled.

Further, a rain cover 12 is connected to the outer side of the vent 11, and water vapor is prevented from entering the vent 11.

Further, in practical applications, the coarse filter screen 42 and the fine filter screen 41 may be arranged side by side, and the distance between them is set according to practical requirements. In the present embodiment, the coarse strainer 42 is disposed at the outer end of the rain shield 12; the fine filter screen 41 is arranged at the end part of the inner side of the rain cover 12; the rotating brush 3 abuts against the fine mesh 41.

Specifically, the rain shield 12 may be arc-shaped, with a first end facing horizontally and a second end facing downward; the first end of the rain cover 12 is connected with the ventilation opening 11, and the coarse strainer 42 is arranged at the second end of the rain cover 12; a fine screen 41 is provided at a first end of the rain shield 12. By arranging the coarse strainer 42 at the second end facing downwards, larger flying dust is not easy to adhere to the coarse strainer 42, the cleaning times of the coarse strainer 42 can be reduced, and the labor cost can be saved.

The above is the first embodiment provided in the present application, and the following is the second embodiment provided in the present application, specifically referring to fig. 5.

A second aspect of the present application provides a ventilation control method for a box-type transformer, which is applied to the box-type transformer described in any one of the above embodiments, the box-type transformer including a temperature sensor disposed in a box 1;

the ventilation control method comprises the following steps:

s1, acquiring the temperature in the box body before starting, and executing the step S2 when the temperature before starting exceeds the set starting temperature value;

specifically, the main controller obtains the temperature before starting in the box 1 through the temperature sensor, that is, the temperature inside the box 1 before starting each fan 2.

S2, keeping the fan in the vent at the upper end to rotate along the reverse direction, and keeping the fan in the vent at the lower end to rotate along the forward direction;

the main controller controls the air inlet of the upper fan 2 and the air outlet of the lower fan 2, so that the inside of the box body 1 is ventilated from top to bottom.

S3, calculating the execution time length of the step S2, and when the execution time length of the step S2 exceeds the first set time length, entering the step S4;

s4, keeping the fan in the vent at the upper end to rotate in the forward direction, keeping the fan in the vent at the lower end to rotate in the reverse direction, simultaneously obtaining the temperature after starting in the box body, judging whether the temperature after starting is larger than a set stop temperature value or not, if so, closing each fan and returning to the step S1, and if not, entering the step S5;

s5, calculating the execution time length of step S4, and returning to step S2 when the execution time length of step S4 exceeds the second set time length.

Specifically, the first set time period and the second set time period may be set according to actual needs, for example, the first set time period may be 10 hours, the second set time period may be 2 hours, and the like. After lasting for first settlement duration through the 2 air intakes of fan on upper portion, the main controller adjusts upper portion fan for the air-out, and lower part fan 2 is the air intake to change 1 inside ventilation modes of box and for ventilating from bottom to top, can effectively clean the dust flying wadding that lies in the double-deck filter screen 4 adhesion on upper portion in step S2, further reduce the clean filter screen' S of staff needs, more be applicable to the use in industrial area.

Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.