CN212161465U

CN212161465U - Transformer protection box

Info

Publication number: CN212161465U
Application number: CN202021090329.9U
Authority: CN
Inventors: 张甲兴; 鲍洪海; 张长顺
Original assignee: Shandong Goldace Electric Equipment Co ltd
Current assignee: Shandong Goldace Electric Equipment Co ltd
Priority date: 2020-06-11
Filing date: 2020-06-11
Publication date: 2020-12-15
Anticipated expiration: 2030-06-11

Abstract

The utility model discloses a transformer protection box, which comprises a base, a box body upper cover, a vertical clapboard, a first air inlet fan, a second air inlet fan, a first exhaust fan, a second exhaust fan and a controller; the box body is arranged at the upper part of the base, the upper cover of the box body is of a double-layer hollow structure and is arranged at the upper part of the box body, and the first air inlet fan and the second air inlet fan are respectively arranged at two sides of the bottom of the box body; the first exhaust fan and the second exhaust fan are respectively arranged on two sides of the bottom of the upper cover of the box body; the vertical partition plate is arranged on the upper cover of the box body, and the controller is respectively connected with the first air inlet fan, the second air inlet fan, the first exhaust fan and the second exhaust fan; the first air inlet fan, the second air inlet fan, the first exhaust fan and the second exhaust fan form an alternate cross air duct in the box body, so that the heat dissipation capacity is improved to the maximum degree, and the energy consumption and the noise can be reduced.

Description

Transformer protection box

Technical Field

The utility model belongs to the technical field of transformer protection device and specifically relates to a transformer protection box.

Background

The iron core and the coil of the transformer can generate heat during the operation process of the transformer, so that the temperature of the transformer is increased. If the heat generated by the transformer in unit time is balanced with the heat emitted by the transformer, the temperature of the transformer is not increased any more; otherwise, the transformer will burn out due to over-high temperature.

In practical application, a non-outdoor transformer generally adopts an additional ventilation opening and an exhaust fan to assist in heat dissipation, and the heat dissipation efficiency is determined by the power of the exhaust fan, but the exhaust fan needs to be ensured to run in the whole process of the transformer operation. However, because the load of the transformer is unbalanced in the use process, the exhaust fan needs to be operated in the whole process according to the highest heat dissipation efficiency, the use pressure of the exhaust fan is high, the whole process high-speed operation is not beneficial to energy conservation, and the noise is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that just lie in to among the above-mentioned prior art because the load in the transformer use is unbalanced, the exhaust fan needs to be according to the whole operation of highest radiating efficiency, and is great to the service pressure of exhaust fan, and whole high-speed operation is unfavorable for energy-conservation, and the great not enough of noise, provides one kind and has alternately wind channel, and the improvement heat-sinking capability of maximize can reduce the transformer protection box of energy consumption and noise again.

The utility model provides a technical scheme that its technical problem adopted is: a transformer protection box comprises a base, a box body upper cover, a vertical partition plate, a first air inlet fan, a second air inlet fan, a first exhaust fan, a second exhaust fan and a controller; the box body is arranged at the upper part of the base, the upper cover of the box body is of a double-layer hollow structure and is arranged at the upper part of the box body, and the first air inlet fan and the second air inlet fan are respectively arranged at two sides of the bottom of the box body; the first exhaust fan and the second exhaust fan are respectively arranged on two sides of the bottom of the upper cover of the box body; the vertical partition plate is arranged on the upper cover of the box body, and the controller is respectively connected with the first air inlet fan, the second air inlet fan, the first exhaust fan and the second exhaust fan; the first air inlet fan and the second air outlet fan are connected into a path to form a first air channel; the second air inlet fan and the first exhaust fan are connected into one path to form an air duct II, and the first air inlet fan, the second air inlet fan, the first exhaust fan and the second exhaust fan form an alternate cross air duct in the box body, so that the heat dissipation capacity is improved to the maximum degree, and the energy consumption and the noise can be reduced.

As a further improvement of the above technical solution, the first air inlet fan and the second air inlet fan are externally provided with a louver connected with the box body, and the louver can improve the dustproof and rainproof functions of the box body; the first fan and the second fan are provided with guide plates, and the guide plates can enable more air to be directly blown to the transformer, so that the heat dissipation efficiency is improved.

As the further improvement of the technical scheme, the lower parts of the first exhaust fan and the second exhaust fan are provided with the inclined partition plates, the inclined angles of the inclined partition plates are 20 degrees, so that the ascending hot air can be guided to be rapidly discharged by the exhaust fans, the hot air is not accumulated at the corners of the top of the box body, and the inclined partition plates do not occupy too much space.

As a further improvement of the technical scheme, an air outlet is formed below the rain brim of the upper cover of the box body and used for exhausting air in the box body, and the air outlet is formed below the rain brim of the upper cover of the box body, so that the box body can be arranged outdoors and rainwater cannot enter the box body.

As a further improvement of the technical scheme, the lifting rod is arranged on the base and is convenient to move the transformer protection box body.

As a further improvement of the technical scheme, the controller comprises a temperature sensor, a temperature controller, an intermediate relay and a time relay, and the time relay comprises KT1 and KT 2.

Compared with the prior art, the beneficial effects of the utility model are that: the first air inlet fan, the second air inlet fan, the first exhaust fan and the second exhaust fan form an alternate cross air channel, the temperature in the box body is collected, and the controller is used for adjusting the starting and stopping of the air inlet fan and the exhaust fan, so that the functions of energy saving and noise reduction are achieved, and the heat dissipation capacity of the transformer protection box body is improved.

Drawings

FIG. 1 is a front view of a transformer guard tank;

FIG. 2 is a side view of the transformer guard tank;

fig. 3 is a circuit diagram of the controller.

In the drawings: 1 is the base, 2 is the hoist and mount pole, 3 is the box, 4 is the air outlet, 5 is the box upper cover, 6 is perpendicular baffle, 7 is the controller, 8 is the slope baffle, 9 is temperature sensor, 10 is the transformer, 11 is first fan of advancing, 12 is the second fan of advancing, 13 is the guide plate, 14, first exhaust fan, 15 is the second exhaust fan, KW is temperature controller, KA is relay, KT1, KT2 are time relay.

Detailed Description

The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

A transformer protection box is shown in reference to figures 1-2 and comprises a base 1, a lifting rod 2, a box body 3, an air outlet 4, a box body upper cover 5, a vertical partition plate 6, a controller 7, an inclined partition plate 8, a temperature sensor 9, a transformer 10, a first air inlet fan 11, a second air inlet fan 12, a guide plate 13, a first exhaust fan 14 and a second exhaust fan 15, and is shown in reference figure 3, wherein KW is a temperature controller, KA is an intermediate relay, and KT1 and KT2 are time relays.

In the above structure, the box body 3 is arranged on the upper part of the base 1, the box body upper cover 5 is a double-layer hollow structure and is arranged on the upper part of the box body 3, and the first air inlet fan 12 and the second air inlet fan 13 are respectively arranged on two sides of the bottom of the box body 3; the first exhaust fan 14 and the second exhaust fan 15 are respectively arranged at two sides of the bottom of the box body upper cover 5; the vertical partition plate 6 is arranged on the box body upper cover 5, and the controller 7 is respectively connected with the first air inlet fan 12, the second air inlet fan 13, the first exhaust fan 14 and the second exhaust fan 15; the first air inlet fan 11 and the second exhaust fan 15 are connected into a path to form a first air channel; the second air inlet fan 12 and the first exhaust fan 14 are connected into a whole path to form an air duct II, and the first air inlet fan 12, the second air inlet fan 13, the first exhaust fan 14 and the second exhaust fan 15 form an alternate cross air duct in the box body 3, so that the heat dissipation capability is improved to the maximum degree, and the energy consumption and the noise can be reduced.

The controller 7 comprises a temperature sensor 9, a temperature controller, an intermediate relay and a time relay, wherein the time relay comprises KT1 and KT 2.

When the transformer protection box is used, when the transformer 10 runs at low load, the temperature sensor 9 works, and if the temperature in the box 3 is less than or equal to 40 ℃: the first intake fan 11 and the second exhaust fan 15 are operated, and air enters the interior of the cabinet 3 from the lower left portion and is discharged from the upper right portion. After 5 minutes, the time relay is operated, the first air intake fan 11 and the second air exhaust fan 15 are stopped, the second air intake fan 12 and the first air exhaust fan 14 are operated, and air enters the interior of the box body 3 from the lower right part and is exhausted from the upper left part. The two fans work alternately every 5 minutes, so that the air flow in the box body can be uniform in a reciprocating manner, and hot air is prevented from being accumulated in corners and further the internal temperature of the box body 3 is reduced.

When the transformer is in high-load operation, the temperature sensor 9 works, if the temperature in the box body 3 is more than 40 degrees centigrade: the controller 7 operates to make two paths formed by the first air inlet fan 12, the second air inlet fan 13, the first air outlet fan 14 and the second air outlet fan 15 trip off the time relay, and simultaneously operate to accelerate the discharge of the hot air in the box 3.

The outer parts of the first air inlet fan 11 and the second air inlet fan 12 are provided with shutters connected with the box body 3, and the shutters can improve the dustproof and rainproof functions of the box body 3; the first air inlet fan 11 and the second air inlet fan 12 are provided with a guide plate 13, and the guide plate 13 can blow more air directly to the transformer, so that the heat dissipation efficiency is improved.

The lower part of first exhaust fan 14 and second exhaust fan 15 is provided with slope baffle 8, the inclination of slope baffle 8 is 20, so both can carry out the water conservancy diversion to the hot-air that rises, make it in order to be discharged by the exhaust fan rapidly, do not pile up at the top corner of box 3, again be unlikely to slope baffle 8 and occupy too much space, when using, the 8 trompils of slope baffle of one of them side place controller 7 wherein.

An air outlet 4 is formed below the rain eave of the box body upper cover 5 and used for exhausting air in the box body, and the box body 3 can be arranged outdoors and can not allow rainwater to enter the box body 3 by being arranged below the rain eave of the box body upper cover 5.

Be provided with hoist and mount pole 2 on the base 1, hoist and mount pole 2 conveniently removes transformer protection box.

The specific implementation principle of the controller of the transformer protection box body is as follows: the 1 and 2 poles of the temperature controller KW are connected with the 2 and 10 poles of the coil of the intermediate relay KA in series. The delay starting time of the time relays KT1 and KT2 is set to be 5 minutes; the

poles

1 and 3 of the time delay closed contact of the time relay KT2 and the

poles

2 and 7 of the coil of the time relay KT1 are connected in series to form a path of time delay starting circuit; the 1 and 4 poles of the time delay disconnection contact of the time relay KT1 and the 2 and 7 poles of the coil of the time relay KT2 are connected in series to form a two-way time delay starting circuit; and one delay starting circuit is connected with the two delay starting circuits in parallel and then connected with the normally closed

contacts

1 and 4 of the intermediate relay KA in series. The first air inlet fan 11 and the second exhaust fan 15 are connected in parallel to form a first air channel; the normally

open contacts

3 and 6 of the intermediate relay are connected in parallel with the

delayed break contacts

5 and 8 of the time relay KT1 and then connected in series with the first air duct. The second air inlet fan 12 and the first exhaust fan 14 are connected in parallel to form a second air channel; the normally

open contacts

9 and 11 of the intermediate relay are connected in parallel with the

delayed break contacts

5 and 8 of the time relay KT1 and then connected in series with the second air duct.

After the transformer starts, temperature sensor work, if the temperature is less than or equal to 40 ℃ in the box, temperature controller KW does not move, time relay KT 2's coil is electrified, first fan 11 and the operation of second exhaust fan 15 of advancing. After 5 minutes, the coil of the time relay KT2 acts, the time delay disconnection contact of the time relay KT1 is disconnected, the time delay closing contact of the time relay KT2 is closed, and the coil of the time relay KT1 is electrified; after 5 minutes, the coil of the time relay KT1 acts, the time delay disconnection contact of the time relay KT2 is disconnected, the time delay closing contact of the time relay KT1 is closed, and the coil of the time relay KT2 is electrified; so as to reciprocate.

When the temperature rises and the temperature in the box body is higher than 40 ℃, the KW acts, the 1 and 2 poles of the contact are closed, the coil of the intermediate relay KA acts in an electrified mode, the 1 and 4 poles of the normally closed contact of the intermediate relay KA are opened, one-way delay closed circuit is disconnected with the two-way delay closed circuit, the 3 and 6 poles, 9 and 11 poles of the normally open contact of the intermediate relay KA are closed, and the first air channel and the second air channel operate simultaneously.

When the temperature is reduced and the temperature in the box body is less than or equal to 40 ℃, the contact 1 and the contact 2 of the temperature controller KW are disconnected, and the first air duct and the second air duct are controlled to reciprocate by the time relays KT1 and KT 2.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A transformer protection box comprises a base (1), a box body (3), a box body upper cover (5), a vertical partition plate (6), a first air inlet fan (12), a second air inlet fan (13), a first exhaust fan (14), a second exhaust fan (15) and a controller (7); the box body (3) is arranged at the upper part of the base (1), the box body upper cover (5) is of a double-layer hollow structure and is arranged at the upper part of the box body (3), and the first air inlet fan (12) and the second air inlet fan (13) are respectively arranged at two sides of the bottom of the box body (3); the first exhaust fan (14) and the second exhaust fan (15) are respectively arranged on two sides of the bottom of the box body upper cover (5); the vertical partition plate (6) is arranged on the box body upper cover (5), and the controller (7) is respectively connected with the first air inlet fan (12), the second air inlet fan (13), the first exhaust fan (14) and the second exhaust fan (15); the first air inlet fan (11) and the second exhaust fan (15) are connected into a path to form a first air channel; the second air inlet fan (12) and the first air outlet fan (14) are connected into a single path to form a second air channel.

2. A transformer protection tank according to claim 1, characterized in that the first fan inlet (11) and the second fan inlet (12) are externally provided with shutters connected to the tank (3).

3. A transformer protection tank according to claim 1, characterized in that said first fan (11) and said second fan (12) are provided with baffles (13).

4. A transformer protection tank according to claim 1, characterized in that the lower parts of the first exhaust fan (14) and the second exhaust fan (15) are provided with inclined partitions (8).

5. A transformer protection tank according to claim 4, characterized in that the inclination angle of the inclined partition (8) is 20 °.

6. A transformer protection box according to claim 1, characterized in that an air outlet (4) is arranged below the rain eaves of the box upper cover (5).

7. A transformer protection tank according to claim 1, characterized in that the base (1) is provided with a lifting rod (2).

8. A transformer protection tank according to claim 1, characterized in that said controller (7) comprises a temperature sensor (9), a temperature controller, an intermediate relay, a time relay, said time relay comprising KT1 and KT 2.