CN109448957B - An underground transformer suitable for densely populated urban areas - Google Patents

Abstract

The invention relates to a buried transformer suitable for dense urban areas, which adopts a water circulation cooling mode, wherein natural rainfall is collected by a planting groove and flows downwards into a snakelike water channel, the heat is absorbed by the box wall of an electrical equipment box and then is conveyed into the planting groove by a water feeding pump again for natural heat dissipation to finish the heat dissipation of the electrical equipment box, in order to improve the heat dissipation efficiency, a heat dissipation fan can supply air to the electrical equipment box, thereby accelerating the heat exchange speed, the cooling effect is good in the above cooling mode, large-scale cooling fans or auxiliary heat dissipation equipment such as heat dissipation fins and the like are not needed, the volume of the buried transformer is reduced, a larger underground area is not needed to be occupied, the buried transformer is better suitable for the dense urban areas, in addition, green plants can be planted in the planting groove, the buried transformer is more attractive, and the fear of people to high-voltage electrical equipment can be weakened, meanwhile, the transpiration of the green plants can naturally reduce the ambient temperature, and the heat dissipation effect on the electrical equipment box is further improved.

Description

An underground transformer suitable for densely populated urban areas

technical field

The invention relates to the field of power equipment, in particular to a buried transformer suitable for densely populated urban areas.

Background technique

As we all know, the transformer is an important part of the substation, and the substation, as an important element in the power system, plays a pivotal role in the entire power grid transmission process. The normal operation of the substation is a necessary guarantee for the normal power transmission of the power grid. With the continuous development and progress of the economy, in order to meet the requirements of infrastructure construction and residents' living standards, more and more substations are set below the ground in the form of boxes, that is, buried substations; the emergence of buried substations not only The efficiency of power grid transmission is improved, and the land use area of the substation is reduced. However, at this stage, in the existing technology, the transformer in the buried substation has been under the surface for a long time, so there must be problems of poor ventilation and moisture, and buried in the ground. It is not easy to repair and maintain the buried transformer, and there is a lack of monitoring of the internal environment of the buried transformer; once the transformer has an accident, it will inevitably lead to the failure of the normal operation of the power grid. In order to solve the above problems, it is necessary to set up the buried transformer. As a result, the volume of the transformer is increased, and the buried substation generally occupies a large area and is inconvenient to use, especially in densely populated cities, which will affect the coordination of the surrounding environment.

Therefore, in view of the above-mentioned defects in the prior art, it is very necessary to provide and design an underground transformer suitable for densely populated urban areas to solve the above-mentioned technical problems.

SUMMARY OF THE INVENTION

In order to solve the deficiencies in the prior art, the present invention provides an underground transformer suitable for densely populated urban areas. The present invention adopts the method of water circulation cooling. After the natural precipitation is collected by the planting tank, it flows down into the serpentine waterway, The heat is absorbed through the box wall of the electrical equipment box, and then re-transported to the planting tank by the upper water pump to dissipate heat naturally. The volume of the buried transformer is reduced, it does not need to occupy a large underground area, and it can be better applied to densely populated urban areas.

In order to achieve the above purpose, the specific scheme adopted in the present invention is: an underground transformer suitable for densely populated urban areas, comprising a concrete installation groove embedded on the ground, a partition door is arranged in the concrete installation groove, and the The partition door divides the concrete installation slot into a first cavity and a second cavity, the upper end of the first cavity is fixed with a cover plate, and the first cavity is fixed with an electrical equipment box and a cooling fan, so The air supply direction of the cooling fan is toward the electrical equipment box, a number of temperature sensors are fixedly arranged on the side wall of the first cavity, and a smoke sensor and a number of humidity sensors are fixedly arranged on the lower surface of the cover plate, The upper end of the second cavity is provided with a closed door, and a control cabinet is fixed in the second cavity, and the control cabinet is connected to the temperature sensor, the humidity sensor, the smoke sensor and the cooling fan. The control cabinet is also wirelessly connected with a signal terminal, and the signal terminal is arranged outside the concrete installation slot.

A hardened surface layer is also fixedly arranged on the cover plate, a planting groove is slidably arranged on the hardened surface layer, and green plants are arranged in the planting groove; a serpentine water channel is opened inside the box wall of the electrical equipment box, and the The inflow end of the serpentine water channel is communicated with a sewer pipe, the outflow end of the serpentine water channel is communicated with an upper water pipe, and a water pump is arranged in the middle of the upper water pipe, and the upper water pump is electrically connected to the control cabinet.

A chute is provided on the hardened surface layer, a sliding block is slidably arranged in the chute, and the planting groove is fixedly connected with the sliding block.

A water guide groove is formed on the cover plate, a water leakage hole is formed on the slider, the water leakage hole communicates the planting groove and the water guide groove, and a water hole and a water hole are also formed on the cover plate. The upper water hole and the lower water hole are both communicated with the water guiding tank, the lower water pipe is communicated with the upper water hole, and the upper water pipe is communicated with the upper water hole.

The end of the upper water pipe that communicates with the upper water hole is also fixedly sleeved with a first connector, and the end of the lower water pipe that communicates with the water hole is also fixedly sleeved with a second connector. , the first connecting piece and the second connecting piece are both disc-shaped.

A partition is fixed in the planting tank, the partition divides the planting tank into upper and lower parts, the green plants are planted on the upper part, and a plurality of partitions are opened on the partition to connect the upper and lower parts. The through holes of the lower part contain cooling water, and the cooling water is supplemented by natural precipitation through the through holes.

A liquid level sensor is also arranged in the lower part, and the liquid level sensor is electrically connected with the signal terminal.

A solar cell panel is fixedly laid on the hardened surface layer, the solar cell panel is electrically connected with the liquid level sensor and the signal terminal, and a through groove for exposing the chute is formed on the solar cell panel .

The wireless connection between the control cabinet and the signal terminal is Bluetooth or ZigBee.

The signal terminal is also connected with a remote monitoring host through mobile communication or wired communication.

Compared with the prior art, the beneficial effects of the present invention are: in the water circulation cooling method adopted by the present invention, after the natural precipitation is collected by the planting tank, it flows downward into the serpentine water channel, and the heat is absorbed through the box wall of the electrical equipment box. Then it is transported to the planting tank by the upper water pump to dissipate heat naturally and complete the heat dissipation of the electrical equipment box. In order to improve the heat dissipation efficiency, the cooling fan can supply air to the electrical equipment box, thereby speeding up the heat exchange rate. The above cooling method cools down The effect is good, no auxiliary cooling equipment such as large cooling fans or cooling fins is needed, the volume of the buried transformer is reduced, and it does not need to occupy a large underground area, which can be better suitable for densely populated urban areas. Planting green plants in the planting tank is more beautiful, and can reduce people's fear of high-voltage electrical equipment. At the same time, the transpiration effect of green plants can naturally reduce the surrounding temperature and further improve the heat dissipation effect on the electrical equipment box. Moreover, the present invention can Real-time automatic monitoring of buried transformers can be carried out, and alarm signals can be issued according to the monitoring results to avoid danger, and because the buried transformers are set underground, the efficiency of manual inspection is very low, so the present invention is different from traditional manual inspection. Compared with the inspection method, the efficiency can be greatly improved.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is the overall structure schematic diagram of the present invention;

FIG. 2 is a schematic diagram of the connection mode of the circuit part of the present invention.

Reference numerals: 1-green plant, 2-planting trough, 3-partition, 4-cooling water, 5-solar panel, 6-chute, 7-hardened surface, 8-humidity sensor, 9-temperature sensor, 10-Concrete installation slot, 11-Cooling fan, 12-Drain pipe, 13-Serpentine water channel, 14-Electrical equipment box, 15-First connector, 16-Drain hole, 17-Smoke sensor, 18-Water hole , 19-Second connector, 20-Water pump, 21-Water pipe, 22-Partition door, 23-Control cabinet, 24-Closed door, 25-Cover plate, 26-Water guide, 27-Signal terminal, 28- Liquid level sensor, 29-through hole, 30-slider, 31-leakage hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

An underground transformer suitable for densely populated urban areas includes a concrete installation slot 10 embedded on the ground, a partition door 22 is arranged in the concrete installation slot 10, and the partition door 22 connects the concrete installation slot 10 It is divided into a first cavity and a second cavity. The upper end of the first cavity is fixedly provided with a cover plate 25, and the first cavity is fixedly provided with an electrical equipment box 14 and a cooling fan 11. The cooling fan 11 The air supply direction of the first cavity is directed toward the electrical equipment box 14, a number of temperature sensors 9 are fixedly arranged on the side wall of the first cavity, and a smoke sensor 17 and a number of humidity sensors are fixedly arranged on the lower surface of the cover plate 25 8. The upper end of the second cavity is provided with a closed door 24, and a control cabinet 23 is fixed in the second cavity. The control cabinet 23 is connected to the temperature sensor 9, the humidity sensor 8, and the smoke. Both the sensor 17 and the cooling fan 11 are electrically connected, and the control cabinet 23 is also wirelessly connected with a signal terminal 27 , and the signal terminal 27 is arranged outside the concrete installation groove 10 .

To further optimize this solution, a hardened surface layer 7 is also fixedly arranged on the cover plate 25, and a planting groove 2 is slidably provided on the hardened surface layer 7, and a green plant 1 is arranged in the planting groove 2; the electrical equipment box 14 There is a serpentine water channel 13 in the inside of the box wall, the inflow end of the serpentine water channel 13 is connected with the downpipe 12, the outflow end of the serpentine water channel 13 is connected with the upper water pipe 21, and the middle part of the upper water pipe 21 is provided with The upper water pump 20 is electrically connected to the control cabinet 23 .

To further optimize this solution, the hardened surface layer 7 is provided with a chute 6 , a slider 30 is slidably arranged in the chute 6 , and the planting slot 2 is fixedly connected to the slider 30 .

This solution is further optimized. The cover plate 25 is provided with a water guide groove 26, and the slider 30 is provided with a water leakage hole 31. The water leakage hole 31 communicates the planting groove 2 with the water guide groove 26. The cover plate 25 is also provided with a drain hole 16 and an upper drain hole 18. Both the upper drain hole 18 and the lower drain hole 16 are communicated with the water conduit 26, and the drain pipe 12 is connected to the upper drain hole 18. The upper water pipe 21 is communicated with the upper water hole 18 .

To further optimize this solution, the end of the upper water pipe 21 that communicates with the upper water hole 18 is also fixedly sleeved with a first connector 15 , and the end of the lower water pipe 12 that communicates with the lower water hole 16 is also fixed. A second connecting piece 19 is also fixedly sleeved on the upper part, and the first connecting piece 15 and the second connecting piece 19 are both disc-shaped.

This scheme is further optimized, a partition 3 is fixed in the planting tank 2, and the partition 3 divides the planting tank 2 into upper and lower parts, the green plants 1 are planted on the upper part, and the partition 3 There are several through holes 29 for connecting the upper and lower parts, and the lower part contains cooling water 4, and the cooling water 4 is supplemented by natural precipitation through the through holes 29.

To further optimize this solution, a liquid level sensor 28 is also arranged in the lower part, and the liquid level sensor 28 is electrically connected to the signal terminal 27 .

To further optimize this solution, a solar panel 5 is fixedly laid on the hardened surface layer 7, the solar panel 5 is electrically connected to the liquid level sensor 28 and the signal terminal 27, and the solar panel 5 has a useful It is the through groove that exposes the chute 6 .

To further optimize this solution, the wireless connection between the control cabinet 23 and the signal terminal 27 is Bluetooth or ZigBee.

To further optimize this solution, the signal terminal 27 is also connected to a remote monitoring host through mobile communication or wired communication.

The present invention will be described in detail below in conjunction with the accompanying drawings

Please refer to FIGS. 1 and 2 , FIG. 1 is a schematic diagram of the overall structure of the present invention, and FIG. 2 is a schematic diagram of the connection mode of the circuit parts of the present invention.

An underground transformer suitable for densely populated urban areas includes a concrete installation slot 10 embedded on the ground, a partition door 22 is arranged in the concrete installation slot 10, and the partition door 22 divides the concrete installation slot 10 into a first cavity. And the second cavity, the upper end of the first cavity is fixed with a cover plate 25, the first cavity is fixed with an electrical equipment box 14 and a cooling fan 11, and the air supply direction of the cooling fan 11 is towards the electrical equipment box 14, in order to achieve For the best heat dissipation effect, heat dissipation fins are evenly arranged on the outer wall of the electrical equipment box 14, a number of temperature sensors 9 are fixedly arranged on the side wall of the first cavity, and smoke sensors 17 and 9 are fixedly arranged on the lower surface of the cover plate 25. Several humidity sensors 8, the upper end of the second cavity is provided with a closed door 24, the second cavity is fixedly provided with a control cabinet 23, and the control cabinet 23 is electrically connected to the temperature sensor 9, the humidity sensor 8, the smoke sensor 17 and the cooling fan 11. For connection, the control cabinet 23 is also wirelessly connected with a signal terminal 27 , and the signal terminal 27 is arranged on the outside of the concrete installation groove 10 . The wireless connection between the control cabinet 23 and the signal terminal 27 is Bluetooth or ZigBee. The signal terminal 27 is also connected to a remote monitoring host through mobile communication or wired communication.

During the operation of the buried transformer, the temperature sensor 9 , the humidity sensor 8 and the smoke sensor 17 monitor the environmental information in the concrete installation tank 10 in real time, and send it to the control cabinet 23 , and the control cabinet 23 can obtain the surrounding information of the electrical equipment box 14 environment, so as to determine whether the electrical equipment box 14 is likely to be dangerous and whether it needs to be repaired. If it is determined that there is a possibility of danger and needs to be repaired, an alarm signal is sent to the remote monitoring host through the signal terminal 27, and the remote monitoring host receives. After the alarm signal is reached, the relevant maintenance personnel can be notified, and the maintenance personnel can inspect and repair the buried transformer.

The invention can perform real-time automatic monitoring of the buried transformer, and can send out an alarm signal according to the monitoring result to avoid danger, and because the buried transformer is set underground, the efficiency of manual inspection is very low, so the invention is compatible with the Compared with the traditional manual inspection method, the efficiency can be greatly improved.

Further, a hardened surface layer 7 is also fixedly arranged on the cover plate 25, a planting groove 2 is slidably arranged on the hardened surface layer 7, and a green plant 1 is arranged in the planting groove 2; a serpentine water channel 13 is opened inside the box wall of the electrical equipment box 14. The inflow end of the serpentine water channel 13 is connected with the lower water pipe 12, and the outflow end of the serpentine water channel 13 is connected with the upper water pipe 21. Because the buried transformer needs to dissipate a lot of heat when it is working, it is difficult to dissipate the heat when it is installed underground, which will easily cause the temperature of the electrical equipment box 14 to rise, which will seriously lead to equipment failure or even burning. Therefore, it is necessary to carry out Cooling treatment. In the water circulation cooling method adopted in the present invention, after the natural precipitation is collected by the planting tank 2, it flows downward into the serpentine water channel 13, absorbs the heat through the box wall of the electrical equipment box 14, and is then re-transported to the planting by the upper water pump 20. In the tank 2, heat is naturally dissipated to complete the heat dissipation of the electrical equipment box 14. In order to improve the heat dissipation efficiency, the cooling fan 11 can supply air to the electrical equipment box 14, thereby speeding up the heat exchange rate. In addition, green plants 1 can also be planted in the planting tank 2, which is more beautiful and can reduce people's fear of high-voltage electrical equipment. At the same time, the transpiration effect of the green plants 1 can naturally reduce the surrounding temperature, further improving the electrical equipment box 14. heat radiation.

Further, the specific setting method of the planting groove 2 is as follows: the hardened surface layer 7 is provided with a sliding groove 6 , a sliding block 30 is slidably arranged in the sliding groove 6 , and the planting groove 2 is fixedly connected with the sliding block 30 .

Further, the communication mode of the planting tank 2 with the upper water pipe 21 and the water pipe 12 is as follows: a water guide groove 26 is formed on the cover plate 25, and a water leakage hole 31 is formed on the slider 30, and the water leakage hole 31 connects the planting tank 2 and the water guide groove 26. Connected, the cover plate 25 is also provided with a water hole 16 and a water hole 18, the water hole 18 and the water hole 16 are connected with the water guide 26, the water pipe 12 is connected with the water hole 18, and the water pipe 21 is connected with the upper water hole 18. The water holes 18 communicate with each other.

Further, the end of the upper water pipe 21 that communicates with the upper water hole 18 is also fixedly sleeved with a first connector 15, and the end of the water pipe 12 that communicates with the water hole 16 is also fixedly sleeved with a second connector. 19. The first connecting piece 15 and the second connecting piece 19 are both disc-shaped. The first connecting piece 15 and the second connecting piece 19 are used to stabilize the upper water pipe 21 and the lower water pipe 12 , and can be fixedly connected with the cover plate 25 .

Further, a partition 3 is fixed in the planting tank 2, and the partition 3 divides the planting tank 2 into upper and lower parts, green plants 1 are planted on the upper part, and the partition 3 is provided with a number of connecting The through hole 29 contains cooling water 4 in the lower part, and the cooling water 4 is supplemented by natural precipitation through the through hole 29 . In order to ensure that the cooling water 4 can circulate smoothly, the planting tank 2 is separated, and the cooling water is stored separately, so as to avoid excessive influence of the root system of the green plant 1 and cause poor circulation of the cooling water 4 .

Further, a liquid level sensor 28 is also arranged in the lower part, and the liquid level sensor 28 is electrically connected with the signal terminal 27 . The liquid level sensor 28 can monitor the remaining amount of the cooling water 4 in real time. When the remaining amount is insufficient for normal circulation, it sends a signal to the remote monitoring host through the signal terminal 27, and the maintenance personnel replenish the cooling water 4 in time.

Further, a solar cell panel 5 is fixedly laid on the hardened surface layer 7 , the solar cell panel 5 is electrically connected with the liquid level sensor 28 and the signal terminal 27 , and a through groove for exposing the chute 6 is formed on the solar cell panel 5 . The solar panel 5 separately supplies power to the signal terminal 27 and the liquid level sensor 28 to ensure their normal operation.

It should also be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements , but also other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. An underground transformer suitable for densely populated urban areas, characterized in that it comprises a concrete installation groove (10) embedded on the ground, wherein a partition door (22) is provided in the concrete installation groove (10), The partition door (22) divides the concrete installation groove (10) into a first cavity and a second cavity, the upper end of the first cavity is fixedly provided with a cover plate (25), and the first cavity An electrical equipment box (14) and a cooling fan (11) are fixedly arranged in the body, the air supply direction of the cooling fan (11) faces the electrical equipment box (14), and the side wall of the first cavity is fixedly arranged There are several temperature sensors (9), the lower surface of the cover plate (25) is fixedly provided with a smoke sensor (17) and several humidity sensors (8), and the upper end of the second cavity is provided with a closed door (24) ), a control cabinet (23) is fixedly arranged in the second cavity, the control cabinet (23) is connected with the temperature sensor (9), the humidity sensor (8), the smoke sensor (16) and all the The cooling fans (11) are all electrically connected, and the control cabinet (23) is also wirelessly connected with a signal terminal (27), and the signal terminal (27) is arranged on the outside of the concrete installation groove (10); A hardened surface layer (7) is also fixedly arranged on the cover plate (25), a planting groove (2) is slidably arranged on the hardened surface layer (7), and green plants (1) are arranged in the planting groove (2) ; A serpentine water channel (13) is provided inside the box wall of the electrical equipment box (14), and the inflow end of the serpentine water channel (13) is communicated with a sewer (12), and the serpentine water channel (13) The outflow end is communicated with a water supply pipe (21), a water supply pump (20) is arranged in the middle of the water supply pipe (21), and the upper water pump (20) is electrically connected with the control cabinet (23); A chute (6) is opened on the hardened surface layer (7), a slider (30) is slidably arranged in the chute (6), and the planting slot (2) is fixedly connected with the slider (30). ; A water guide groove (26) is formed on the cover plate (25), and a water leakage hole (31) is formed on the sliding block (30), and the water leakage hole (31) connects the planting groove (2) and the The water guiding groove (26) is communicated, and the cover plate (25) is also provided with a drain hole (16) and an upper drain hole (18), and the upper drain hole (18) and the drain hole (16) are both connected to the The water conduit (26) is communicated with each other, the lower water pipe (12) is communicated with the upper water hole (18), and the upper water pipe (21) is communicated with the upper water hole (18). 2. An underground transformer suitable for densely populated urban areas according to claim 1, characterized in that: the end of the water supply pipe (21) that communicates with the water supply hole (18) is also fixed on A first connector (15) is sleeved, and a second connector (19) is fixedly sleeved on the end of the water pipe (12) that communicates with the water hole (16). The first connection The component (15) and the second connecting component (19) are both disc-shaped. 3. An underground transformer suitable for densely populated urban areas according to claim 1, characterized in that: a partition plate (3) is fixedly arranged in the planting groove (2), and the partition plate (3) The planting groove (2) is divided into upper and lower parts, the green plant (1) is planted on the upper part, and the partition plate (3) is provided with a plurality of through holes (29) for connecting the upper and lower parts. , cooling water (4) is contained in the lower part, and the cooling water (4) is supplemented by natural precipitation through the through hole (29). 4. An underground transformer suitable for densely populated urban areas according to claim 3, characterized in that: a liquid level sensor (28) is further provided in the lower part, and the liquid level sensor (28) is connected with the signal The terminal (27) is electrically connected. 5. An underground transformer suitable for densely populated urban areas according to claim 4, characterized in that: a solar cell panel (5) is fixedly laid on the hardened surface layer (7), and the solar cell panel ( 5) Electrically connected to the liquid level sensor (28) and the signal terminal (27), the solar panel (5) is provided with a through groove for exposing the chute (6). 6. An underground transformer suitable for densely populated urban areas according to claim 1, characterized in that: the wireless connection between the control cabinet (23) and the signal terminal (27) is Bluetooth or ZigBee. 7 . The buried transformer suitable for densely populated urban areas according to claim 6 , wherein the signal terminal ( 27 ) is further connected with a remote monitoring host through mobile communication or wired communication. 8 .

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