A pre-installed substation applied to smart power internet of things

Abstract

The application relates to the technical field of transformer substations, and discloses a preinstalled transformer substation applied to an intelligent power internet of things, which comprises a box-type transformer substation and a cooling fan, the cooling fan is rotationally connected to the outer wall of the box-type transformer substation, the outer wall of the box-type transformer substation is provided with a heat dissipation assembly for assisting the cooling fan in heat dissipation, and the inside of the box-type transformer substation is provided with an anti-short-circuit assembly for improving safety; through the arrangement of the heat dissipation assembly, the cooling efficiency of the cooling fan is improved by using a physical method; compared with the heat dissipation of the traditional preinstalled transformer substation by using a cooling fan, the heat dissipation of the traditional cooling fan is usually only to simply discharge hot air, and lacks further treatment and recycling of the hot air; through the ingenious air flow guiding and convection cooling mechanism, the temperature inside the box-type transformer substation can be effectively reduced; in long-term operation, energy consumption and operation cost are reduced, and equipment aging, damage and failure of the box-type transformer substation caused by high temperature are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of transformer substations, in particular to a prefabricated transformer substation applied to smart power internet of things. BACKGROUND

[0002] The prefabricated transformer substation applied to smart power internet of things is an outdoor compact power distribution device which is prefabricated in a factory according to a certain wiring scheme of high-voltage switchgear, distribution transformer and low-voltage distribution device, etc., and can be flexibly configured according to different user needs and application scenarios, for example, selecting different capacity transformers according to user power needs, and selecting different types of high-voltage switchgear according to power grid wiring mode, etc.

[0003] The existing prefabricated transformer substations on the market have many drawbacks in terms of heat dissipation. Firstly, in terms of heat dissipation effect, the traditional prefabricated transformer substation uses a heat dissipation fan for heat dissipation, which can only achieve relatively simple hot air discharge and cannot effectively process and recycle the discharged hot air. This makes it difficult to quickly and effectively reduce the temperature inside the transformer substation under high-temperature environment or high-load operation. For example, in summer high-temperature weather, the heat dissipation fan cannot timely discharge the large amount of heat generated inside, resulting in high equipment temperature, affecting the performance and service life of electrical equipment. At the same time, insufficient heat dissipation can also cause equipment failure, such as transformer overheating, switch tripping, etc., seriously affecting the reliability and stability of the power system. In terms of energy saving and environmental protection, the traditional heat dissipation method directly discharges hot air to the external environment, causing a large amount of heat energy waste.

[0004] During the operation of the prefabricated transformer substation, many high-voltage devices need to be placed inside, which is prone to short circuit. The sparks generated when a short circuit occurs can easily cause a fire. The short circuit protection mechanism of the existing prefabricated transformer substations on the market is often slow to respond. When a short circuit fault occurs inside, it cannot cut off the short circuit current at the first time, so that the short circuit current exists for a period of time. This not only causes serious damage to electrical equipment, but also causes safety accidents such as fire. Moreover, the short circuit protection device of the traditional prefabricated transformer substation has the problems of misoperation or incomplete operation. Sometimes, it can cause unnecessary power outage due to misoperation of short circuit protection in normal operation state. When a short circuit fault actually occurs, it cannot completely cut off the short circuit current, so that the fault range is expanded. This inaccurate protection mechanism brings great uncertainty to the stable operation of the power system. In addition, the traditional prefabricated transformer substation is prone to generate sparks when a short circuit fault occurs. Due to the lack of effective protection measures, these sparks can cause a fire, posing a serious threat to the environment and personnel safety around the transformer substation. Moreover, once a fire occurs, it is difficult to extinguish and can cause greater losses.

[0005] Therefore, it is necessary to provide a pre-installed substation applied to smart power internet of things, aiming at solving the above problems. SUMMARY

[0006] In view of the deficiencies in the prior art, the purpose of the present application is to provide a pre-installed substation applied to smart power internet of things.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solution: a pre-installed substation applied to smart power internet of things, comprising a box-type substation and a cooling fan, the cooling fan is rotationally connected to the outer wall of the box-type substation, the outer wall of the box-type substation is provided with a cooling assembly for cooling the auxiliary cooling fan, and the inside of the box-type substation is provided with an anti-short circuit assembly for improving safety.

[0008] Preferably, the cooling assembly comprises a distance increasing plate, the distance increasing plate is fixedly connected to the outer wall of the box-type substation, the side of the distance increasing plate away from the box-type substation is fixedly connected with an arc-shaped positioning block, the inside of the distance increasing plate and the arc-shaped positioning block is provided with a funnel-shaped ventilation groove, and the inside of the arc-shaped positioning block is fixedly connected with a spacing ring.

[0009] Preferably, the cooling assembly further comprises an air pipe, the air pipe is fixedly connected to the inside of the spacing ring, the inside of the air pipe is annularly provided with an inclined hole, the top of the air pipe is fixedly connected with a conveying pipe, the bottom of the air pipe is fixedly connected with a gas blocking plug, and there is a gap between the gas blocking plug and the inner wall of the air pipe.

[0010] Preferably, the anti-short circuit assembly comprises a square groove, the square groove is provided in the bottom of the box-type substation, a rotating disc is rotationally connected to the top of the square groove, an adapter rod is rotationally connected to the inside of the rotating disc, an arc-shaped block is rotationally connected to the end of the adapter rod away from the rotating disc, a conductive sheet is rotationally connected to the bottom of the square groove, a connecting rod is rotationally connected to the bottom of the arc-shaped block and the conductive sheet, and a first reset spring is fixedly connected between the two connecting rods.

[0011] Preferably, the anti-short circuit assembly further comprises an L-shaped insulating plate, the L-shaped insulating plate is fixedly connected to the top of the square groove, a square clamping plate is fixedly connected to the bottom of the L-shaped insulating plate, a second reset spring is fixedly connected between the square clamping plate and the adapter rod, a striking needle is slidingly connected to the top of the L-shaped insulating plate, a third reset spring is fixedly connected to the outer wall of the striking needle, and the end of the third reset spring away from the striking needle is fixedly connected to the L-shaped insulating plate.

[0012] Preferably, the anti-short circuit assembly further comprises a magnetic coil, the magnetic coil is sleeved on the outside of the striking needle and the third reset spring, a metal conductive block is fixedly connected to the bottom of the L-shaped insulating plate, and an arc-extinguishing block is fixedly connected to the top of the square groove.

[0013] Preferably, the distance board is connected to the funnel-shaped ventilation slot of the arc-shaped positioning block.

[0014] Preferably, the arc-shaped block is rotationally connected to the inside of the square slot, and the arc-extinguishing block is arranged above the conductive sheet and the metal conductive block.

[0015] Preferably, the magnetic coil forms an electric circuit path with the metal conductive block and the conductive sheet, and the magnetic coil has an electrical connection relationship with the power supply of the equipment.

[0016] The preinstalled transformer substation applied to the smart power Internet of Things is provided, and compared with the prior art, the preinstalled transformer substation has the following beneficial effects:

[0017] 1. By arranging the heat dissipation assembly, in the process of discharging the hot gas in the box-type transformer substation, the heat dissipation fan discharges the hot gas generated in the box-type transformer substation to the outside of the ventilation pipe through the funnel-shaped ventilation slot, and then the hot gas flows into the inside of the ventilation pipe through the gap between the spacing ring and the ventilation pipe. In this process, when the hot gas passes through the inclined hole, part of the hot flow spirally flows out from the gap between the gas blocking plug and the ventilation pipe along the wall of the ventilation pipe, is discharged from the inside of the box-type transformer substation, and then the remaining hot gas flows in the opposite spiral manner due to the blocking of the gas blocking plug. In this process, the energy of the hot gas is lost, and the discharged hot gas and the remaining hot gas form a convection, thereby rapidly cooling the part of the hot gas. Then, the airflow after cooling flows into the inside of the box-type transformer substation through the conveying pipe, thereby achieving the purpose of improving the cooling efficiency of the heat dissipation fan by using a physical method.

[0018] Compared with the traditional preinstalled transformer substation using a heat dissipation fan for heat dissipation, the traditional heat dissipation fan heat dissipation only simply discharges the hot gas, lacks further processing and recycling of the hot gas, and the above design can more effectively reduce the temperature in the box-type transformer substation through the ingenious airflow guiding and convection cooling mechanism. For example, in hot summer or high-load operation, the traditional heat dissipation method is difficult to rapidly reduce the temperature, while the design can quickly control the internal temperature within a reasonable range, ensuring the normal operation of the equipment. At the same time, the traditional heat dissipation fan heat dissipation has the problems of uneven heat dissipation and low efficiency. The new design optimizes the airflow path and utilizes the convection principle to make the heat dissipation more uniform and efficient, which means that the equipment can operate at a higher load, reducing the failure and downtime caused by overheating, and improving the reliability and stability of the transformer substation.

[0019] Secondly, the traditional heat dissipation method usually discharges the hot gas directly to the external environment, wasting a large amount of heat energy. The above design recycles the cooled airflow, reduces energy waste by using physical principles, reduces energy consumption and operating costs in long-term operation, and reduces equipment aging, damage and failure caused by high temperature in the box-type transformer substation.

[0020] 2、Through the setting of the short-circuit prevention assembly, the internal short-circuit circuit of the box-type transformer substation during operation can be made to impact the arc block through the magnetic force of the magnetic coil, so that the conductive sheet is disconnected from the metal conductive block, thereby avoiding the generation of sparks by the short-circuit current and causing a fire to occur. Compared with the traditional prefabricated transformer substation, the conductive sheet is disconnected from the metal conductive block under the impact, cutting off the path of the short-circuit current. This disconnection method is accurate and reliable, and can ensure that the short-circuit current cannot continue to flow. However, the traditional protection device has uncertainty when disconnecting the short-circuit current, such as incomplete disconnection or misoperation. At the same time, the traditional prefabricated transformer substation is prone to generate sparks during short-circuit, thereby causing a fire and causing serious damage to the equipment and the surrounding environment. The device can cut off the source of spark generation at the early stage of short-circuit, effectively avoiding major safety accidents such as fires, and improving the safety of the transformer substation.

[0021] The traditional prefabricated transformer substation has the problem of long response time in short-circuit protection. The above design can quickly start the protection mechanism at the moment of short-circuit, greatly reducing the duration of the short-circuit current, and reliable short-circuit protection helps to improve the stability of the entire power system. When the box-type transformer substation experiences short-circuit, it will not cause excessive impact on the upper-level power grid and other users, ensuring the continuity and reliability of power supply. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the position relationship of the overall device of the present application;

[0023] Figure 2 is a sectional view of the overall device of the present application;

[0024] Figure 3 is a structure enlarged view of position A in the present application; Figure 2

[0025] Figure 4 is a structure enlarged view of position B in the present application; Figure 2

[0026] Figure 5 is a schematic view of the position relationship of the box-type transformer substation and the heat dissipation assembly of the present application;

[0027] Figure 6 is a schematic view of the position relationship of the heat dissipation assembly of the present application;

[0028] Figure 7 is a schematic view of the position relationship of the short-circuit prevention assembly of the present application;

[0029] Figure 8 is a structure enlarged view of position C in the present application; Figure 7

[0030] ​​​Figure 9 Fig. 1 is a schematic view of the positional relationship of the L-shaped insulation plate, the impact needle and the third reset spring of the application.

[0031] Fig. 1 is a schematic view of the positional relationship of the L-shaped insulation plate, the impact needle and the third reset spring of the application.

[0032] The heat dissipation assembly comprises a distance increasing plate 21, an arc-shaped positioning block 22, a funnel-shaped ventilation groove 23, a spacing ring 24, an air pipe 25, an inclined hole 26, a conveying pipe 27 and a gas blocking plug 28.

[0033] The short circuit prevention assembly comprises a square groove 31, a rotating disc 32, a connecting rod 33, an arc-shaped block 34, a conductive sheet 35, a connecting rod 36, a first reset spring 37, an L-shaped insulation plate 38, a square clamping plate 39, a second reset spring 310, an impact needle 311, a third reset spring 312, a magnetic coil 313, a metal conductive block 314 and an arc extinguishing block 315. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the application clearer, the application is further described in detail below in combination with the drawings and examples, and it should be understood that the specific examples described herein are only used to explain the application and do not limit the application.

[0035] In the description of the application, the terms "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0036] The specific implementation of the application is described in detail below in combination with specific examples.

[0037] The specific implementation of the application is described in detail below in combination with specific examples. Figures 1 to 9 As shown in the figure, the pre-installed substation for smart power Internet of Things provided by an embodiment of the application comprises a box-type substation 11 and a heat dissipation fan 12, the heat dissipation fan 12 is rotationally connected to the outer wall of the box-type substation 11, the outer wall of the box-type substation 11 is provided with a heat dissipation assembly for dissipating heat of the auxiliary heat dissipation fan 12, and the inside of the box-type substation 11 is provided with a short circuit prevention assembly for improving safety.

[0038] The heat dissipation assembly comprises a distance board 21 fixedly connected to the outer wall of the box-type substation 11, an arc-shaped positioning block 22 fixedly connected to the side of the distance board 21 away from the box-type substation 11, funnel-shaped ventilation grooves 23 formed in the distance board 21 and the arc-shaped positioning block 22, and a spacing ring 24 fixedly connected to the inside of the arc-shaped positioning block 22.

[0039] The heat dissipation assembly further comprises an air pipe 25 fixedly connected to the inside of the spacing ring 24, an inclined hole 26 annularly formed in the inside of the air pipe 25, a conveying pipe 27 fixedly connected to the top of the air pipe 25, a gas blocking plug 28 fixedly connected to the bottom of the air pipe 25, and a gap between the gas blocking plug 28 and the inner wall of the air pipe 25.

[0040] The funnel-shaped ventilation grooves 23 of the distance board 21 and the arc-shaped positioning block 22 are communicated, so that the hot air discharged by the heat dissipation fan 12 can enter the inside of the arc-shaped positioning block 22.

[0041] The short-circuit prevention assembly comprises a square groove 31 formed in the bottom of the box-type substation 11, a rotating disc 32 rotatably connected to the top of the square groove 31, an engaging rod 33 rotatably connected to the inside of the rotating disc 32, an arc-shaped block 34 rotatably connected to the end of the engaging rod 33 away from the rotating disc 32, a conductive sheet 35 rotatably connected to the bottom of the square groove 31, a connecting rod 36 rotatably connected to the bottom of the arc-shaped block 34 and the conductive sheet 35, and a first reset spring 37 fixedly connected between the two connecting rods 36.

[0042] The short-circuit prevention assembly further comprises an L-shaped insulating plate 38 fixedly connected to the top of the square groove 31, a square clamping plate 39 fixedly connected to the bottom of the L-shaped insulating plate 38, a second reset spring 310 fixedly connected between the square clamping plate 39 and the engaging rod 33, an impact pin 311 slidingly connected to the top of the L-shaped insulating plate 38, a third reset spring 312 fixedly connected to the outer wall of the impact pin 311, and the end of the third reset spring 312 away from the impact pin 311 fixedly connected to the L-shaped insulating plate 38.

[0043] The short-circuit prevention assembly further comprises a magnetic coil 313 sleeved to the outside of the impact pin 311 and the third reset spring 312, a metal conductive block 314 fixedly connected to the bottom of the L-shaped insulating plate 38, and an arc-extinguishing block 315 fixedly connected to the top of the square groove 31.

[0044] The arc-shaped block 34 is rotatably connected to the inside of the square groove 31, the arc-extinguishing block 315 is arranged above the conductive sheet 35 and the metal conductive block 314, and the electric arc generated when the conductive sheet 35 and the metal conductive block 314 are separated enters the inside of the arc-extinguishing block 315.

[0045] The magnetic coil 313, the metal conductive block 314 and the conductive sheet 35 form a circuit path, so that the current flows through the magnetic coil 313, the metal conductive block 314 and the conductive sheet 35, and the magnetic coil 313 is electrically connected with the power supply of the equipment, so that when a short circuit occurs in the box-type substation 11, the magnetic coil 313 generates a strong magnetic field.

[0046] Working principle: In the initial state, the conductive sheet 35 is in contact with the metal conductive block 314, the first reset spring 37 is not stretched, and the second reset spring 310 is stretched, and the third reset spring 312 is not compressed.

[0047] When the box-type substation 11 is cooled by the cooling fan 12, the funnel-shaped ventilation grooves 23 are formed in the distance board 21 and the arc-shaped positioning block 22, and the funnel-shaped ventilation grooves 23 of the distance board 21 and the arc-shaped positioning block 22 are communicated, so that the hot air in the box-type substation 11 enters the interior of the arc-shaped positioning block 22 through the funnel-shaped ventilation grooves 23.

[0048] The hot air flows along the outer wall of the air pipe 25, and then the hot air flows into the interior of the air pipe 25 in a spiral manner. In this process, the air flowing into the interior of the air pipe 25 in a spiral manner passes through the inclined hole 26, and then the hot air flows in the interior of the air pipe 25 in a spiral manner. Because there is a gap between the air block 28 and the inner wall of the air pipe 25, part of the hot air flows out from the gap between the air block 28 and the air pipe 25 along the wall of the air pipe 25 in a spiral manner, and is discharged from the interior of the box-type substation 11.

[0049] Then the remaining hot air flows in the opposite spiral manner due to the blockage of the air block 28. In this process, the energy of the hot air is lost, and the discharged hot air and the remaining hot air form a convection, so that the part of the hot air is quickly cooled. Then the airflow after cooling flows into the interior of the box-type substation 11 through the conveying pipe 27, so as to achieve the purpose of improving the cooling efficiency of the cooling fan 12 by using physical method.

[0050] Compared with the heat dissipation fan 12 of the traditional pre-installed transformer substation, the traditional heat dissipation fan 12 is only used to simply discharge hot air, lacking further processing and recycling of the hot air. However, the above design can effectively reduce the temperature inside the box-type transformer substation 11 through ingenious air flow guiding and convection cooling mechanism. For example, in hot summer or high load operation, the traditional heat dissipation method is difficult to quickly reduce the temperature, while the above design can quickly control the internal temperature within a reasonable range to ensure the normal operation of the equipment. In addition, the above design reduces energy waste through recycling of the cooled air flow, reduces energy consumption and operating costs in the long run, and reduces equipment aging, damage and failure caused by high temperature in the box-type transformer substation 11.

[0051] When a short circuit occurs inside the box-type transformer substation 11, the current inside the box-type transformer substation 11 will rapidly rise to ten to one hundred times of the normal circuit in a few milliseconds. Since the magnetic coil 313, the metal conductive block 314 and the conductive sheet 35 form a circuit path, and the magnetic coil 313 has an electrical connection relationship with the power supply of the equipment, the rapidly rising current will generate a strong magnetic field in the magnetic coil 313. The magnetic force of the magnetic coil 313 is proportional to the magnetic field strength, and the stronger the magnetic field, the greater the magnetic force of the magnetic coil 313 on the impact needle 311. When the magnetic force of the magnetic coil 313 is large enough to overcome the resistance of the third reset spring 312 on the impact needle 311, the strong magnetic field of the magnetic coil 313 will pull the impact needle 311 to compress the third reset spring 312, and the impact needle 311 will slide along the bottom of the L-shaped insulating plate 38, and the bottom of the impact needle 311 will abut against the arc block 34 to rotate;

[0052] At this time, the arc block 34 is hit by the impact needle 311, which pulls the rotating disc 32 to rotate through the connecting rod 33, and the second reset spring 310 rapidly elastically contracts. Since the connecting rod 33 is eccentrically connected to the inside of the rotating disc 32, the second reset spring 310 synchronously pulls the rotating disc 32 to rotate through the connecting rod 33.

[0053] During the rotation of the arc block 34, the arc block 34 will stretch the first reset spring 37 through the connecting rod 36, and the first reset spring 37 will pull the conductive sheet 35 to rotate through the connecting rod 36 at the bottom of the conductive sheet 35. Finally, the conductive sheet 35 rotates along the bottom of the square groove 31 away from the metal conductive block 314, so that the conductive sheet 35 and the metal conductive block 314 are separated from each other, thereby achieving the purpose of automatically disconnecting the internal circuit of the box-type transformer substation 11 when a short circuit occurs in the box-type transformer substation 11;

[0054] In addition, when the box-type transformer station 11 is in normal operation, the normal current inside the box-type transformer station 11 cannot overcome the tension of the third reset spring 312 to make the magnetic field generated by the magnetic coil 313 trigger the rotation of the arc block 34.

[0055] When the electrically conductive sheet 35 and the metal conductive block 314 are separated from each other, an electric arc is generated between the electrically conductive sheet 35 and the metal conductive block 314. The electric arc is a kind of plasma, which has the characteristics of high temperature and low density, and is affected by the surrounding gas convection and electric power. When the electric arc is generated, it heats the surrounding air, causing the air to become hot and light, forming an upward hot air flow. The hot air flow carries the electric arc upward, and the arc extinguishing block 315 is arranged above the electrically conductive sheet 35 and the metal conductive block 314, so that the electric arc gradually flows into the inside of the arc extinguishing block 315 during the separation of the electrically conductive sheet 35 and the metal conductive block 314. The arc extinguishing block 315 is composed of small-interval parallel plates. The resistance increases with the increase of length and decreases with the increase of area. The electric arc entering the inside of the arc extinguishing block 315 is divided into small pieces, and the energy of the small pieces of electric arc is low. At the same time, the arc extinguishing block 315 also absorbs the energy of the electric arc, and finally the electric arc in the inside of the arc extinguishing block 315 gradually disappears.

[0056] During the operation of the box-type transformer station 11, the circuit inside the box-type transformer station 11 that is short-circuited can make the impact needle 311 impact the arc block 34 by the magnetic force generated by the magnetic coil 313, so that the electrically conductive sheet 35 and the metal conductive block 314 are separated from each other, thereby avoiding the generation of sparks by the short-circuit current and causing a fire. Compared with the traditional prefabricated transformer station, the electrically conductive sheet 35 and the metal conductive block 314 are separated from each other under the impact, and the path of the short-circuit current is cut off. This separation method is accurate and reliable, and can ensure that the short-circuit current cannot continue to flow. However, the traditional protection device has uncertainty when cutting off the short-circuit current, such as incomplete cutting or misoperation. At the same time, the traditional prefabricated transformer station is prone to generate sparks during short circuit, thereby causing a fire and causing serious damage to the equipment and the surrounding environment. The device can cut off the source of spark generation at the early stage of short circuit, can effectively avoid the occurrence of fire and other major safety accidents, and improves the safety of the transformer station.

[0057] For those skilled in the art, although several embodiments of the present application are described, these embodiments are presented as examples and are not intended to limit the scope of the application. These new embodiments can be implemented in other various ways, and various omissions, substitutions, and changes can be made without departing from the scope of the application. These embodiments and their modifications are included in the scope and spirit of the application, and are included in the scope of the application and its equivalents as recited in the claims.

[0058] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A prefabricated substation for use in the Internet of Things for smart power, comprising a box-type substation (11) and a cooling fan (12), wherein the cooling fan (12) is rotatably connected to the outer wall of the box-type substation (11), characterized in that, The outer wall of the box-type substation (11) is provided with a heat dissipation component for cooling the auxiliary cooling fan (12), and the interior of the box-type substation (11) is provided with a short-circuit protection component to improve safety. The heat dissipation assembly includes a spacer plate (21), which is fixedly connected to the outer wall of the box-type substation (11). An arc-shaped positioning block (22) is fixedly connected to the side of the spacer plate (21) away from the box-type substation (11). Funnel-shaped ventilation slots (23) are opened inside both the spacer plate (21) and the arc-shaped positioning block (22). A spacer ring (24) is fixedly connected inside the arc-shaped positioning block (22). The heat dissipation assembly also includes a vent pipe (25), which is fixedly connected to the inner side of the spacer ring (24). The vent pipe (25) has an inclined hole (26) in a ring shape inside. A delivery pipe (27) is fixedly connected to the top of the vent pipe (25), and an air-blocking plug (28) is fixedly connected to the bottom of the vent pipe (25). There is a gap between the air-blocking plug (28) and the inner wall of the vent pipe (25). The short-circuit protection component includes a square slot (31), which is located at the bottom of the box-type substation (11). A rotating disk (32) is rotatably connected to the top of the square slot (31). A connecting rod (33) is rotatably connected inside the rotating disk (32). An arc-shaped block (34) is rotatably connected to the end of the connecting rod (33) away from the rotating disk (32). A conductive sheet (35) is rotatably connected to the bottom of the square slot (31). A connecting rod (36) is rotatably connected to the bottom of both the conductive sheet (35) and the arc-shaped block (34). A first reset spring (37) is fixedly connected between the two connecting rods (36). The short-circuit protection assembly also includes an L-shaped insulating plate (38), which is fixedly connected to the top of the square groove (31). A square clamping plate (39) is fixedly connected to the bottom of the L-shaped insulating plate (38). A second return spring (310) is fixedly connected between the square clamping plate (39) and the connecting rod (33). An impact pin (311) is slidably connected to the top of the L-shaped insulating plate (38). A third return spring (312) is fixedly connected to the outer wall of the impact pin (311). One end of the third return spring (312) away from the impact pin (311) is fixedly connected to the L-shaped insulating plate (38). The short-circuit protection assembly also includes a magnetic coil (313), which is sleeved on the outside of the impact pin (311) and the third reset spring (312). A metal conductive block (314) is fixedly connected to the bottom of the L-shaped insulating plate (38), and an arc extinguishing block (315) is fixedly connected to the top of the square groove (31).

2. A prefabricated substation for use in a smart power Internet of Things according to claim 1, characterized in that, The distance-increasing plate (21) is connected to the funnel-shaped ventilation groove (23) of the arc-shaped positioning block (22).

3. A prefabricated substation for use in a smart power Internet of Things according to claim 1, characterized in that, The arc-shaped block (34) is rotatably connected to the inside of the square groove (31), and the arc-extinguishing block (315) is disposed above the conductive sheet (35) and the metal conductive block (314).

4. A prefabricated substation for use in a smart power Internet of Things according to claim 1, characterized in that, The magnetic coil (313), the metal conductive block (314), and the conductive sheet (35) form a circuit path, and the magnetic coil (313) has an electrical connection with the power supply used by the device.

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