CN218887941U - Underground prefabricated substation - Google Patents

Abstract

The utility model discloses an underground prefabricated substation, which comprises an underground shell and a supporting unit; an underground shell: the upper end of the upper cover is provided with an upper cover through a bolt; a support unit: it includes lead screw, supporting seat, sprocket and chain, the lead screw passes through the bearing and rotates to be connected in burying the inside four corners of shell with ground, and the lower extreme of lead screw extrados all is equipped with the sprocket, and four sprockets are all connected through same chain drive, and the lead screw corresponds with supporting seat upper surface four corners screw hole threaded connection respectively, and the transformer is installed through the bolt to the upper surface of supporting seat, and outside high voltage power supply is connected to the input electricity of transformer, and the support element still includes the hexagonal hole, the hexagonal hole has all been seted up to the upper end of lead screw, should bury prepackage type transformer substation, can drive inside transformer and remove to bury the outside of shell with ground, and the maintenance convenience is high, and inside air can circulate simultaneously and flow and bury the wall body of shell with ground and carry out the heat transfer, and the radiating effect is good, and the safety in utilization is high.

Description

An underground prefabricated substation

technical field

The utility model relates to the technical field of substations, in particular to an underground prefabricated substation.

Background technique

With the progress of society, there are more and more buried prefabricated substations. The buried prefabricated substation is to completely bury the traditional box-type substation and semi-buried box-type substation under the ground. The ground does not affect the use and saves the ground. space, and has been widely used. When the buried prefabricated substation is produced, the transformer will be directly fixed to the inside of the buried shell, and then when it is put into use, the box body can be buried underground, but the inside of the box body lacks The components that control the up and down movement of the transformer require maintenance personnel to enter the buried shell below the ground for maintenance, or use hoisting equipment to lift the transformer out of the ground for maintenance, which is not convenient for maintenance. Inside, the air flow is poor, and the heat dissipation effect of the transformer is poor, which affects the safety during use. Therefore, we propose an underground prefabricated substation.

Utility model content

The technical problem to be solved by the utility model is to overcome the existing defects, and provide a buried prefabricated substation, which can drive the internal transformer to move to the outside of the buried shell, and has high convenience for maintenance, and at the same time, the internal air can circulate The heat exchange with the wall of the buried shell has good heat dissipation effect and high safety in use, and can effectively solve the problems in the background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: an underground prefabricated substation, including an underground shell and a supporting unit;

Buried shell: its upper end is equipped with a cover through bolts;

Support unit: it includes a screw, a support seat, a sprocket and a chain. The screw is connected to the four corners of the buried shell through bearings. The lower end of the outer arc of the screw is equipped with a sprocket. The four sprockets are Through the same chain drive connection, the screw rods are respectively threaded with the corresponding threaded holes at the four corners of the upper surface of the support base. A transformer is installed on the upper surface of the support base through bolts. The input end of the transformer is electrically connected to an external high-voltage power supply. The air inside the buried shell circulates, and then the heat exchange between the buried shell and the transformer can be realized through the circulating air, and then the heat of the transformer is dissipated into the soil through the buried shell, thereby realizing good heat dissipation of the transformer and improving the The transformer is safe in use, and at the same time, the transformer can be moved to the outside of the buried shell by rotating the screw rod. The structure is simple and easy to use, which improves the convenience of transformer maintenance.

Further, the support unit also includes hexagonal holes, and the upper ends of the screw rods are provided with hexagonal holes, which facilitates the driving of the screw rods.

Further, the lower surface of the transformer is provided with an air guide shell, and the bottom of the air guide shell is provided with a cooling fan, and the input end of the cooling fan is electrically connected to an external controller to dissipate heat from the transformer.

Further, the bottom of the buried shell is provided with a diversion shell, and a connecting pipe is slidably connected to the inside of the sliding hole in the middle of the diversion shell. It is convenient for heat exchange between the air and the buried shell.

Further, the upper end of the connecting pipe is provided with a rubber pad, and the upper surface of the rubber pad is in contact with the lower surface of the cooling fan, so as to improve the sealing effect between the connecting pipe and the cooling fan.

Further, the upper and lower ends of the outer arc surface of the connecting pipe are provided with retaining rings, and the retaining rings are respectively located on the upper and lower sides of the lower end wall of the diversion shell. An upward force is provided to the connecting pipe between the upper retaining ring and the guide shell.

Further, uniformly distributed heat transfer fins are provided on the front and rear inner side walls of the buried shell, and the heat transfer fins are all located inside the diversion shell, and uniformly distributed heat sinks are provided on the front and rear outer sides of the buried shell, increasing the heat transfer efficiency. The heat dissipation surface area of the earth buried shell wall.

Compared with the prior art, the beneficial effect of the utility model is that the local buried prefabricated substation has the following advantages:

1. When in use, adjust the external controller, the cooling fan is running, the cooling fan blows upwards, and the upward airflow will flow upwards along the gaps of the transformer cooling fins under the action of the air guide shell, thereby dissipating heat from the transformer. At the same time, the air above It will enter the gap between the diversion shell and the buried shell from above, and in the process of passing through the diversion shell, it will exchange heat and cool down with the outside soil through the heat exchange fins and the wall of the buried shell. The heat dissipation surface area of the buried shell is increased, and then the cooled air is pumped upward by the cooling fan through the buried shell, thereby realizing the circulation of the air, and then the transformer can be continuously radiated heat, and the buried shell can be cooled by the cooling fan. The internal air circulates, and then the heat exchange between the buried shell and the transformer can be realized through the circulating air, and then the heat of the transformer is dissipated into the soil through the buried shell, thereby realizing good heat dissipation of the transformer and improving the use of the transformer. security at the time.

2. When the transformer needs to be repaired and maintained, the upper cover can be removed, and then a hexagonal wrench or other tools can be inserted into the inside of the hexagonal hole to drive the screw to rotate, and the screw will drive other screw to synchronize through the sprocket and chain Then the screw rod drives the support seat to move upwards, and then the support seat drives the transformer to move out of the buried shell, and then the transformer can be repaired outside the buried shell, and the transformer can be driven to move to the buried shell by rotating the screw rod The external structure is simple and easy to use, which improves the convenience of transformer maintenance.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic cross-sectional structure diagram of a support unit of the present invention;

Fig. 3 is the schematic diagram of enlarged structure of place A of the utility model;

Fig. 4 is the sectional structure schematic diagram of the utility model transformer;

Fig. 5 is the schematic diagram of enlarged structure at B place of the utility model;

Fig. 6 is a schematic structural view of the diversion shell of the present invention.

In the figure: 1 buried shell, 2 upper cover, 3 support unit, 31 screw rod, 32 support seat, 33 sprocket, 34 chain, 35 hexagonal hole, 4 transformer, 5 air guide shell, 6 cooling fan, 7 air guide Shell, 8 connecting pipes, 9 retaining rings, 10 springs, 11 rubber pads, 12 heat exchange fins, 13 cooling fins.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-6, this embodiment provides a technical solution: a buried prefabricated substation, including a buried shell 1 and a support unit 3;

Buried shell 1: the upper end is equipped with a cover 2 through bolts, and the buried shell 1 and the cover 2 protect the internal electrical components;

Support unit 3: it includes a screw rod 31, a support seat 32, a sprocket 33 and a chain 34. The screw rod 31 is connected to the four corners inside the buried shell 1 through bearings, and the lower end of the outer arc surface of the screw rod 31 is equipped with a sprocket 33. The four sprockets are all connected by the same chain 34. The screw rods 31 are threadedly connected with the corresponding threaded holes at the four corners of the upper surface of the support base 32. The upper surface of the support base 32 is equipped with a transformer 4 through bolts. The input of the transformer 4 The terminal is connected to an external high-voltage power supply. When in use, connect the high-voltage terminal of the transformer 4 to the high-voltage power supply, and connect the low-voltage terminal of the transformer 4 to the external low-voltage cable. The transformer 4 uses the principle of electromagnetic induction to change the voltage of the external AC , the support unit 3 also includes a hexagonal hole 35, and the upper end of the screw rod 31 is provided with a hexagonal hole 35. When the transformer 4 needs to be repaired and maintained, the upper cover 2 can be removed, and then inserted into the hexagonal hole using a hexagonal wrench or other tools The inside of 35 drives the screw mandrel 31 to rotate, and the screw mandrel 31 will drive other screw mandrels 31 to rotate synchronously through the sprocket 33 and the chain 34, and then the screw mandrel 31 drives the support seat 32 to move upward, and then the support seat 32 drives the transformer 4 to move out to the outside of the buried shell 1, and then the transformer 4 can be overhauled outside the buried shell 1;

Wherein: the lower surface of the transformer 4 is provided with an air guide shell 5, and the bottom of the air guide shell 5 is provided with a cooling fan 6, and the input end of the cooling fan 6 is electrically connected to an external controller, and the external controller is regulated during use, and the cooling fan 6 operates, The heat dissipation fan 6 blows air upwards, and the upward air flow will flow upwards along the gaps of the heat dissipation fins of the transformer 4 under the action of the air guide shell 5, thereby dissipating heat from the transformer 4. The bottom of the buried shell 1 is provided with a guide shell 7, A connecting pipe 8 is slidably connected to the inside of the sliding hole in the middle of the diversion shell 7. The upper end of the connecting pipe 8 runs through the upper surface of the support seat 32. The connecting pipe 8 is arranged in cooperation with the lower end of the cooling fan 6. The upper end of the connecting pipe 8 is provided with a rubber Pad 11, the upper surface of the rubber pad 11 is in contact with the lower surface of the cooling fan 6, the rubber pad 11 improves the tightness when the connecting pipe 8 and the cooling fan 6 are connected, and the upper and lower ends of the outer arc surface of the connecting pipe 8 are provided with stoppers. The ring 9 and the retaining ring 9 are respectively located on the upper and lower sides of the lower end wall of the diversion shell 7, and the upper end of the outer arc surface of the connecting pipe 8 is movably sleeved with a spring 10, and the spring 10 is located between the upper retaining ring 9 and the diversion shell 7 , the spring 10 provides an upward force to the connecting pipe 8 through the upper retaining ring 9, and the lower retaining ring 9 restricts the separation of the connecting pipe 8 and the diversion shell 7, and the front and rear inner walls of the buried shell 1 are provided with uniform distribution The heat exchange fins 12 are all located inside the diversion shell 7, and the front and rear outer surfaces of the buried shell 1 are provided with evenly distributed heat sinks 13, and the air above will enter the diversion shell 7 and the Inside the gap between the buried shells 1, in the process of passing through the diversion shell 7, the heat exchange fins 12 and the wall of the buried shell 1 will exchange heat and cool down with the outside soil, and the cooling fins 13 increase the temperature of the ground. The heat dissipation surface area of the buried shell 1, and then the cooled air is pumped upward by the heat dissipation fan 6 through the buried shell 1, so as to realize the circulation of air, and then the transformer 4 can be continuously dissipated heat.

The working principle of an underground prefabricated substation provided by the utility model is as follows: when in use, the high-voltage terminal of the transformer 4 is connected to the high-voltage power supply, and the low-voltage terminal of the transformer 4 is connected to the external low-voltage cable. Use the principle of electromagnetic induction to change the voltage of the external alternating current, adjust the external controller during use, the cooling fan 6 runs, the cooling fan 6 blows upward, and the upward airflow will follow the cooling fins of the transformer 4 under the action of the air guide shell 5 The gap flows upwards, thereby dissipating heat from the transformer 4. At the same time, the air above enters the gap between the diversion shell 7 and the buried shell 1, and passes through the heat exchange fins 12 and the buried shell 1 while passing through the diversion shell 7 The wall of the buried shell 1 exchanges heat with the outside soil to cool down, and at the same time, the cooling fins 13 increase the heat dissipation surface area of the buried shell 1, and then the cooled air is pumped upward by the cooling fan 6 through the buried shell 1, Furthermore, the circulation of air can be realized, and then the transformer 4 can be continuously dissipated. When the transformer 4 needs to be repaired and maintained, the upper cover 2 can be removed, and then a hexagonal wrench or other tools can be inserted into the hexagonal hole 35 to drive the wire When the rod 31 rotates, the screw rod 31 will drive other screw rods 31 to rotate synchronously through the sprocket 33 and the chain 34, and then the screw rod 31 will drive the support seat 32 to move upward, and then the support seat 32 will drive the transformer 4 to move out to the buried shell 1 , and then the transformer 4 can be overhauled outside the buried shell 1.

It is worth noting that the cooling fan 6 and the transformer 4 disclosed in the above embodiments can be freely configured according to actual application scenarios. The cooling fan 6 can be an axial flow fan of model G22060HA2BL. methods commonly used in the prior art.

The above descriptions are only examples of the utility model, and are not intended to limit the patent scope of the utility model. Any equivalent structure or equivalent process transformation made by using the utility model specification and accompanying drawings may be directly or indirectly used in other applications. Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (7)

1. A buried prefabricated substation, characterized in that it includes a buried shell (1) and a support unit (3); Buried shell (1): the upper end is installed with an upper cover (2) through bolts; Support unit (3): it includes a screw rod (31), a support base (32), a sprocket (33) and a chain (34), and the screw rod (31) is rotatably connected to the inside of the buried shell (1) through a bearing The four corners of the screw mandrel (31) are equipped with sprockets (33) at the lower end of the outer arc surface, and the four sprockets are all connected by the same chain (34) transmission, and the screw mandrels (31) are connected to the support seat (32) respectively. The threaded holes corresponding to the four corners of the surface are threaded, and the upper surface of the support seat (32) is equipped with a transformer (4) through bolts, and the input end of the transformer (4) is electrically connected to an external high-voltage power supply. 2. An underground prefabricated substation according to claim 1, characterized in that: the support unit (3) also includes hexagonal holes (35), and the upper ends of the screw rods (31) are provided with hexagonal holes. hole (35). 3. The buried prefabricated substation according to claim 1, characterized in that: the lower surface of the transformer (4) is provided with a wind guide shell (5), and the bottom of the wind guide shell (5) is provided with The heat dissipation fan (6), the input end of the heat dissipation fan (6) is electrically connected to an external controller. 4. The buried prefabricated substation according to claim 3, characterized in that: the bottom of the buried shell (1) is provided with a diversion shell (7), and the slide in the middle of the diversion shell (7) A connecting pipe (8) is slidably connected to the inside of the hole, and the upper end of the connecting pipe (8) runs through the upper surface of the support seat (32), and the connecting pipe (8) is arranged in cooperation with the lower end of the cooling fan (6). 5. An underground prefabricated substation according to claim 4, characterized in that: the upper end of the connecting pipe (8) is provided with a rubber pad (11), and the upper surface of the rubber pad (11) is in contact with the cooling fan (6) in contact with the lower surface. 6. An underground prefabricated substation according to claim 4, characterized in that: the upper and lower ends of the outer arc surface of the connecting pipe (8) are provided with stop rings (9), and the stop rings (9) They are respectively located on the upper and lower sides of the lower end wall of the diversion shell (7). The upper end of the outer arc surface of the connecting pipe (8) is movably sleeved with a spring (10). The spring (10) is located on the upper retaining ring (9) and the guide between shells (7). 7. The buried prefabricated substation according to claim 4, characterized in that: the front and rear inner walls of the buried shell (1) are provided with evenly distributed heat exchange fins (12), and the heat exchange fins (12) are located inside the diversion shell (7), and the front and rear outer surfaces of the buried shell (1) are provided with uniformly distributed cooling fins (13).

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