Buried substation convenient to operate and maintain

Abstract

The invention discloses a buried transformer substation convenient to operate and maintain, which comprises a concrete base layer, two threading grooves are formed in the concrete base layer, four fixing rods are pre-embedded in the concrete base layer, a sealing box is arranged at the top of the concrete base layer, and mounting plates are fixedly connected to the left and right sides of the sealing box. Inserting grooves are formed in the two mounting plates, and the four fixing rods are sleeved with nuts in threaded connection with the fixing rods. Compared with a traditional installation mode that a special well body needs to be built, the method has the advantages that the building difficulty is effectively reduced, the construction period is shortened, the cost is reduced, meanwhile, workers can complete operation and maintenance of the box-type substation on the ground, the operation and maintenance difficulty is effectively reduced, and the operation and maintenance efficiency is improved. While the operation and maintenance speed is increased, the risk of falling of workers in the operation and maintenance process can be avoided, and then the operation and maintenance safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground substations, and more particularly to an underground substation that is convenient to operate and maintain. Background Art

[0002] An underground substation is a new type of power facility that partially or completely buries traditional substation equipment underground. It aims to address issues such as urban space shortages, landscape coordination, and environmental protection, while also facilitating operation and maintenance through optimized design.

[0003] Conventional underground substations are entirely buried underground, requiring dedicated wells to accommodate equipment and facilitate maintenance. This approach results in long construction times and high costs. Operations and maintenance personnel must descend into the well, creating a risk of falling and inefficient operations. Therefore, a new type of underground substation that facilitates operation and maintenance is urgently needed. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide an underground substation that is convenient for operation and maintenance, so as to solve the background technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions: A buried substation convenient for operation and maintenance comprises a concrete base, two wire threading grooves are provided on the concrete base, four fixing rods are pre-buried on the concrete base, a sealing box is provided on the top of the concrete base, the left and right sides of the sealing box are fixedly connected with mounting plates, slots are provided on the two mounting plates, nuts are sleeved on the four fixing rods that are threadedly connected thereto, two inspection rooms and an installation room are provided on the sealing box, two buffer blocks are fixedly connected to the inner bottom wall of the installation room, and the box-type substation itself is fixedly connected between the two buffer blocks. The inner wall of the installation room is provided with two inspection ports, the top of the sealing box is detachably connected to a cover plate by four bolts, the bottom of the cover plate is fixedly connected to three sealing plates, the outer sides of the three sealing plates are respectively in contact with the inner walls of two inspection rooms and one installation room, the inner bottom walls of the two inspection rooms are provided with sealing devices, the top of the cover plate is provided with a window, the inner wall of the window is detachably connected to a top plate by four screws, the top plate is provided with an observation port, the inner wall of the observation port is fixedly connected to a transparent plate, and an operation port is provided on the sealing plate in the middle.

[0006] As a further description of the above technical solution: The sealing device includes a groove, which is opened on the inner bottom wall of the maintenance chamber, and the inner bottom wall of the groove is provided with equidistant threading holes. A sealing airbag is provided inside the groove, and the sealing airbag is provided with equidistantly arranged circular holes. The top of the sealing airbag is fixedly connected to a square plate, and the square plate is detachably connected to the inner bottom wall of the maintenance chamber through a screw. The square plate is provided with equidistantly arranged through holes, and an air filling pipe connected to the sealing airbag is inserted into the square plate, and a valve is installed on the air filling pipe.

[0007] As a further description of the above technical solution: An air duct is fixedly connected to the back of the sealed box, and the two ends of the air duct are respectively connected to two maintenance rooms. Fans are installed on the inner walls of the two air ducts. Heat dissipation fins are fixedly connected to the inner bottom wall of the air duct, and the bottom of the heat dissipation fins passes through and extends to the bottom of the air duct.

[0008] As a further description of the above technical solution: Three cooling fins are installed on the inner wall of the air duct, the cooling surfaces of the three cooling fins are all located inside the air duct, and the heat dissipation surfaces of the three cooling fins all penetrate and extend to the back side of the air duct.

[0009] As a further description of the above technical solution: The top plate is sleeved with a sealing ring fixedly connected thereto, and the outer side of the sealing ring contacts the inner wall of the window.

[0010] As a further description of the above technical solution: A temperature sensor and a controller are fixedly connected to the inner wall of the maintenance room on the left. The output end of the temperature sensor is connected to the controller signal, and the output end of the controller is connected to the refrigeration plate signal.

[0011] As a further description of the above technical solution: An air pressure sensor is installed on the air filling pipe, and the output end of the air pressure sensor is connected to the controller signal.

[0012] Compared with the prior art, the advantages of the present invention are: This solution adopts the "lying buried" installation method for the box-type substation. Compared with the traditional installation method that requires the construction of a special well, it effectively reduces the construction difficulty, shortens the construction period, and reduces costs. At the same time, workers can complete the operation and maintenance of the box-type substation on the ground, effectively reducing the difficulty of operation and maintenance, improving the speed of operation and maintenance, and avoiding the risk of workers falling during operation and maintenance, thereby improving the safety of operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the three-dimensional diagrams of the present invention; Figure 2 This is the second stereogram of the present invention; Figure 3 This is the third stereogram of the present invention; Figure 4 This is the fourth perspective view of the present invention; Figure 5 is a cross-sectional view of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of part A in the middle; Figure 7 For the present invention Figure 5 Enlarged view of middle part B; Figure 8 A top cross-sectional view of the air duct of the present invention; Figure 9 Schematic diagram of the position of the air intake pipe in the present invention; Figure 10 Schematic diagram of the position of the sealing airbag in the present invention.

[0014] Description of the numbers in the figure: 1. Concrete base; 2. Wire duct; 3. Fixing rod; 4. Sealing box; 5. Mounting plate; 6. Slot; 7. Maintenance room; 8. Installation room; 9. Buffer block; 10. Box-type substation body; 11. Maintenance port; 12. Cover plate; 13. Sealing plate; 14. Sealing device; 141. Groove; 142. Wire hole; 143. Sealing airbag; 144. Round hole; 145. Square plate; 146. Through hole; 147. Gas pipe; 15. Window; 16. Top plate; 17. Observation port; 18. Transparent plate; 19. Operation port; 20. Air duct; 21. Fan; 22. Heat sink; 23. Refrigeration plate; 24. Sealing ring; 25. Temperature sensor; 26. Controller; 27. Pressure sensor. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention; See also Figure 1-10The present invention provides an underground substation convenient for operation and maintenance, including a concrete base 1, two wire threading grooves 2 are provided on the concrete base 1, four fixing rods 3 are pre-buried on the concrete base 1, a sealing box 4 is provided on the top of the concrete base 1, and the left and right sides of the sealing box 4 are fixedly connected to the mounting plates 5, the two mounting plates 5 are provided with slots 6, and the four fixing rods 3 are sleeved with nuts threadedly connected thereto. The sealing box 4 is provided with two inspection chambers 7 and an installation chamber 8, and the inner bottom wall of the installation chamber 8 is fixedly connected to two buffer blocks 9, and a box-type substation body 10 is fixedly connected between the two buffer blocks 9. The inner wall of the installation chamber 8 is provided with two inspection ports 11, and the top of the sealing box 4 is detachably connected to a cover plate 12 by four bolts, and the bottom of the cover plate 12 is fixedly connected to three sealing plates 13. The outer sides of the three sealing plates 13 are in contact with the inner walls of the two inspection chambers 7 and an installation chamber 8 respectively, and the inner walls of the two inspection chambers 7 are fixedly connected. The bottom wall is provided with a sealing device 14, a window 15 is provided on the top of the cover 12, the inner wall of the window 15 is detachably connected to the top plate 16 by four screws, an observation port 17 is provided on the top plate 16, the inner wall of the observation port 17 is fixedly connected to a transparent plate 18, and an operation port 19 is provided on the middle sealing plate 13; the sealing device 14 includes a groove 141, which is provided on the inner bottom wall of the maintenance chamber 7, and the inner bottom wall of the groove 141 is provided with equidistant threading holes 142. A sealing airbag 143 is provided inside the groove 141. Circular holes 144 arranged at equal distances are provided on the sealing airbag 143. A square plate 145 is fixedly connected to the top of the sealing airbag 143. The square plate 145 is detachably connected to the inner bottom wall of the maintenance chamber 7 through a screw. Through holes 146 arranged at equal distances are provided on the square plate 145. An air filling pipe 147 connected to the sealing airbag 143 is inserted through the square plate 145, and a valve is installed on the air filling pipe 147.

[0016] In the present invention, when installing the box-type substation body 10, first a foundation pit is dug out of the ground, and then concrete is poured to form a concrete base 1. When pouring the concrete base 1, the fixing rod 3 is pre-buried, and the position of the wire groove 2 is reserved. After the concrete base 1 is poured, the sealing box 4 is first hoisted to the top of the concrete base 1, and the fixing rod 3 passes through the slot 6. Then, the sealing box 4 can be fixed to the top of the concrete base 1 by the cooperation of the nut, the fixing rod 3 and the mounting plate 5, thereby completing the installation of the sealing box 4.

[0017] When pouring the concrete base 1, all the incoming and outgoing lines of the box-type substation body 10 are pre-buried underground, and the incoming and outgoing lines are led out to the top of the concrete base 1 through the wire threading trough 2. The incoming and outgoing lines will respectively pass through the wire threading hole 142, the circular hole 144 on the sealing airbag 143 and the through hole 146 into the two maintenance rooms 7, and then the incoming and outgoing lines can be connected to the box-type substation body 10 through the inspection port 11.

[0018] After the connection of the incoming and outgoing lines of the box-type substation body 10 is completed, the worker connects the air pump to the gas filling pipe 147, then opens the valve and starts the air pump. The air pump will inject air into the sealing airbag 143 through the gas filling pipe 147, and then the sealing airbag 143 will expand. After the sealing airbag 143 expands, it will be tightly attached to the square plate 145, the incoming and outgoing lines and the groove 141 respectively, thereby achieving the effect of sealing between the incoming and outgoing lines and the sealing box 4, and preventing external rainwater from entering the sealing box 4 and affecting the box-type substation body 10.

[0019] After completing the sealing of the incoming and outgoing lines and the sealing box 4, the worker climbs out of the maintenance room 7, and then installs the cover 12 to the top of the sealing box 4 with bolts. At this time, the three sealing plates 13 will be tightly attached to the inner walls of the two maintenance rooms 7 and the installation room 8 respectively, thereby achieving the sealing of the maintenance room 7 and the installation room 8, and preventing external rainwater from entering the interior of the sealing box 4. At this time, the sealing box 4 is completely in a closed state, and the installation of the box-type substation body 10 can be completed. After completing the installation of the box-type substation body 10, the height of the cover 12 is flush with the ground.

[0020] During daily operation and maintenance, since the box-type substation body 10 is fixed in the installation room 8 by two buffer blocks 9, the box-type substation body 10 is fixed lying down, and the operation panel and cabinet door of the box-type substation body 10 are facing forward, workers can observe the status of the box-type substation body 10 through the transparent plate 18. Compared with traditional operation and maintenance, workers need to go down the well to work, which effectively avoids the risk of workers falling and effectively improves the efficiency of operation and maintenance.

[0021] When the box-type substation body 10 needs to be operated and maintained, the worker can remove the top plate 16 from the window 15 by rotating the screws, and then the worker can operate the box-type substation body 10 through the operation port 19 on the ground. There is no need to go down the well during the operation and maintenance process, which effectively improves the difficulty, efficiency and safety of operation and maintenance.

[0022] When it is necessary to operate and maintain the incoming and outgoing lines or the internal structure of the box-type substation body 10, the user removes the cover 12 and then enters the maintenance room 7 to operate and maintain the incoming and outgoing lines or the internal structure of the box-type substation body 10. Moreover, the depth of the maintenance room 7 is much shallower than the traditional pre-buried substation maintenance well. Workers do not need to use ladders to enter and exit, thereby effectively reducing the difficulty of operation and maintenance, reducing the chances of workers falling and getting injured, and improving the safety of operation and maintenance.

[0023] See also Figure 3 、 4, 5 and 8, wherein: the back of the sealed box 4 is fixedly connected to the air duct 20, the two ends of the air duct 20 are respectively connected to the two maintenance rooms 7, the inner walls of the two air ducts 20 are installed with fans 21, the inner bottom wall of the air duct 20 is fixedly connected to the heat dissipation fin 22, the bottom of the heat dissipation fin 22 passes through and extends to the bottom of the air duct 20.

[0024] In the present invention, when the box-type substation body 10 generates heat during operation, the two fans 21 are turned on. The fan 21 on the right side will draw the air in the right maintenance room 7 into the air duct 20, and the fan 21 on the left side will draw the air in the air duct 20 into the maintenance room 7 on the left. The air will then pass through the installation room 8 from the maintenance room 7 on the left and flow into the maintenance room 7 on the right. The air will then circulate in the air duct 20, the maintenance room 7 and the installation room 8. When the air enters the air duct 20, the heat dissipation fins 22 will come into contact with the air, and the heat in the air can be introduced into the soil, thereby achieving the effect of cooling the air. The cooled air can achieve the effect of cooling the box-type substation body 10, and the heat dissipation fins 22 are located inside the soil. On hot summer days, the temperature deep in the soil will be lower than the temperature of the air. Compared with the traditional heat dissipation method of directly exchanging heat with the outside air, the heat dissipation effect of the box-type substation body 10 is effectively improved.

[0025] See also Figure 8 , wherein: three cooling fins 23 are installed on the inner wall of the air duct 20, the cooling surfaces of the three cooling fins 23 are all located inside the air duct 20, and the heat dissipation surfaces of the three cooling fins 23 all penetrate and extend to the back of the air duct 20.

[0026] In the present invention, when the box-type substation body 10 is in a high temperature state for a long time, the refrigeration plate 23 is turned on, and the refrigeration plate 23 will cool the air in the air duct 20. The cooled air can effectively improve the heat dissipation effect of the box-type substation body 10, and then cool the box-type substation body 10, avoiding the box-type substation body 10 from malfunctioning due to long-term high temperature, and improving the stability of the box-type substation body 10.

[0027] See also Figure 6 , wherein: a sealing ring 24 is sleeved on the top plate 16 and fixedly connected thereto, and the outer side of the sealing ring 24 contacts the inner wall of the window 15.

[0028] In the present invention, the provision of the sealing ring 24 can perform a sealing process between the top plate 16 and the window 15, thereby preventing external rainwater from entering the interior of the sealing box 4, thereby improving the safety of the device.

[0029] See also Figure 5, wherein: a temperature sensor 25 and a controller 26 are fixedly connected to the inner wall of the left maintenance room 7, the output end of the temperature sensor 25 is signal-connected to the controller 26, and the output end of the controller 26 is signal-connected to the refrigeration plate 23.

[0030] In the present invention, the temperature sensor 25 can detect the air temperature in the maintenance room 7, and then determine the temperature of the area where the box-type substation body 10 is located. When the temperature of the box-type substation body 10 is overheated, the controller 26 turns on the cooling plate 23, effectively improving the practicality of the device.

[0031] See also Figure 7 , wherein: an air pressure sensor 27 is installed on the air filling pipe 147, and the output end of the air pressure sensor 27 is connected to the controller 26 signal.

[0032] In the present invention, after sufficient air is injected into the sealing airbag 143 to complete the sealing between the input and output lines and the sealing box 4, the air pressure sensor 27 will measure the internal air pressure of the sealing airbag 143. By observing the air pressure changes in the sealing airbag 143, the sealing effect between the input and output lines and the sealing box 4 can be judged. When the sealing airbag 143 is damaged, the sealing effect between the input and output lines and the sealing box 4 will be lost. At this time, the value detected by the air pressure sensor 27 will decrease. If the detected value does not change much, it means that the sealing effect remains in good condition.

[0033] The above are only preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An underground substation convenient for operation and maintenance, comprising a concrete base (1), characterized in that: The concrete base (1) is provided with two threading grooves (2), four fixing rods (3) are pre-buried on the concrete base (1), a sealing box (4) is provided on the top of the concrete base (1), the left and right sides of the sealing box (4) are fixedly connected with mounting plates (5), the two mounting plates (5) are provided with slots (6), the four fixing rods (3) are sleeved with nuts threadedly connected thereto, the sealing box (4) is provided with two maintenance rooms (7) and an installation room (8), the inner bottom wall of the installation room (8) is fixedly connected with two buffer blocks (9), a box-type substation body (10) is fixedly connected between the two buffer blocks (9), the inner wall of the installation room (8) is provided with two maintenance openings (1 1), the top of the sealing box (4) is detachably connected to a cover plate (12) by four bolts, the bottom of the cover plate (12) is fixedly connected to three sealing plates (13), the outer sides of the three sealing plates (13) are in contact with the inner walls of two maintenance rooms (7) and one installation room (8), respectively, the inner bottom walls of the two maintenance rooms (7) are provided with sealing devices (14), a window (15) is provided on the top of the cover plate (12), the inner wall of the window (15) is detachably connected to a top plate (16) by four screws, an observation port (17) is provided on the top plate (16), the inner wall of the observation port (17) is fixedly connected to a transparent plate (18), and an operation port (19) is provided on the middle sealing plate (13).

2. The underground substation with convenient operation and maintenance according to claim 1, characterized in that: The sealing device (14) includes a groove (141), the groove (141) is opened on the inner bottom wall of the maintenance chamber (7), the inner bottom wall of the groove (141) is provided with equidistant threading holes (142), a sealing airbag (143) is provided inside the groove (141), the sealing airbag (143) is provided with equidistantly arranged circular holes (144), the top of the sealing airbag (143) is fixedly connected to a square plate (145), the square plate (145) is detachably connected to the inner bottom wall of the maintenance chamber (7) through a screw, the square plate (145) is provided with equidistantly arranged through holes (146), the square plate (145) is interspersed with an air filling pipe (147) connected to the sealing airbag (143), and a valve is installed on the air filling pipe (147).

3. The underground substation with convenient operation and maintenance according to claim 1, characterized in that: The back of the sealed box (4) is fixedly connected to an air duct (20), and the two ends of the air duct (20) are respectively connected to the two maintenance rooms (7). The inner walls of the two air ducts (20) are both installed with fans (21). The inner bottom wall of the air duct (20) is fixedly connected to a heat dissipation fin (22), and the bottom of the heat dissipation fin (22) passes through and extends to the bottom of the air duct (20).

4. The underground substation with convenient operation and maintenance according to claim 3 is characterized in that: Three cooling fins (23) are installed on the inner wall of the air duct (20), the cooling surfaces of the three cooling fins (23) are all located inside the air duct (20), and the heat dissipation surfaces of the three cooling fins (23) pass through and extend to the back of the air duct (20).

5. The underground substation with convenient operation and maintenance according to claim 1, characterized in that: A sealing ring (24) is sleeved on the top plate (16) and fixedly connected thereto, and the outer side of the sealing ring (24) contacts the inner wall of the window (15).

6. The underground substation convenient for operation and maintenance according to claim 4, characterized in that: A temperature sensor (25) and a controller (26) are fixedly connected to the inner wall of the left maintenance room (7), the output end of the temperature sensor (25) is connected to the controller (26) for signal connection, and the output end of the controller (26) is connected to the refrigeration plate (23) for signal connection.

7. The underground substation with convenient operation and maintenance according to claim 2, characterized in that: An air pressure sensor (27) is installed on the air filling pipe (147), and an output end of the air pressure sensor (27) is connected to a controller (26) for signal transmission.

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