Underground concealed power distribution station

Abstract

The invention relates to the technical field of power distribution station assemblies, in particular to an underground concealed power distribution station which comprises a power distribution station assembly installed in an underground concrete room, a supporting platform is arranged at the inner bottom of the concrete room, a plurality of limiting rods are fixed to the supporting platform, a floating platform is arranged on the limiting rods in a sliding mode, and the power distribution station assembly is installed on the floating platform. An access hole is formed in the top, away from the power distribution station assembly, of the concrete room, a sealing assembly for sealing the access hole is installed on the inner top of the concrete room, the sealing assembly is connected with a driving assembly for driving the sealing assembly to rotate at the front end, and water level triggering assemblies are arranged on the top of the power distribution station assembly and the inner top of the concrete room. The water level triggering assembly and the driving assembly are electrically connected with a control module assembly, and a positioning assembly for clamping and positioning the sealing assembly is arranged at the top in the concrete room. Sealing and plugging of the access hole are achieved, and the situation that the water inlet triggering assembly and the power distribution station assembly in the concrete room are flooded during flood disasters is avoided; wide application prospects are realized in the technical field of power distribution station assemblies.

Description

Technical Field

[0001] This invention relates to the field of power distribution station assembly technology, and in particular to an underground concealed power distribution station. Background Technology

[0002] A substation assembly, also known as a power distribution station, plays a crucial role in receiving, distributing, controlling, and protecting electrical energy, serving as the central hub for power transmission. Traditionally, substation assemblies are mostly built exposed above ground, making them vulnerable to wind and sun damage and occupying significant above-ground space. Therefore, to save space, existing substation assemblies are often built underground. Although the basement where the substation assembly is located is well-waterproofed, it is still easily flooded during floods. Floodwater can backflow into the substation assembly through its access panels, causing short circuits and damage to the electrical equipment, affecting power supply, and increasing the risk of electrical leakage. Therefore, a new underground substation assembly is needed to address these problems. Summary of the Invention

[0003] To address the problem that existing underground power distribution substations are easily flooded during floods, with floodwaters flowing back into the substation through the maintenance openings, causing short circuits and damage to electrical equipment, affecting power supply, and increasing the risk of electrical leakage, this invention proposes an underground concealed power distribution substation. The technical solution of the present invention includes a substation assembly installed in an underground concrete chamber. The substation assembly is characterized by having a support platform at the bottom of the concrete chamber, with multiple limiting rods fixed on the support platform. A float is slidably mounted on each limiting rod. The substation assembly is mounted on the float. An inspection port is located at the top of the concrete chamber away from the substation assembly. A sealing component is installed at the top of the concrete chamber near the inspection port. The sealing component is connected to a drive component, forming a structure where the drive component rotates the sealing component, thereby sealing the inspection port. A water level triggering component is located at the top of the substation assembly and the top of the concrete chamber, forming a structure where the water level triggering component triggers the drive component to rotate the sealing component. The water level triggering component and the drive component are electrically connected to a control module assembly. A positioning component is located at the top of the concrete chamber, forming a structure where the sealing component is engaged and positioned.

[0004] Preferably, the support platform is provided with a horizontal part, an inclined part and a groove part from top to bottom, and the power distribution station assembly is arranged on the horizontal part.

[0005] Preferably, the sealing assembly includes a sealing frame and a sealing balloon, an arc-shaped sealing block is fixed inside the sealing frame, a sealing gasket is fixed to the outer end face of the sealing block, and the sealing balloon is fixed on the sealing block.

[0006] Preferably, a connector is connected to the sealing frame, a venting connector is fixed on the concrete chamber, an air supply pipe is provided inside the sealing frame, both ends of the air supply pipe are connected to the connector and the sealing balloon respectively, the venting connector is connected to an air source, a support plate is fixed on the connector, and a sealing ring is provided on the support plate, forming a structure in which the venting connector and the sealing ring are in close contact after the connector is inserted into the venting connector.

[0007] Preferably, the drive assembly includes a drive motor, a drive shaft, and a connecting plate. The drive motor is fixed to the top of the concrete chamber via a connecting seat. The drive shaft is fixedly connected to the output shaft of the drive motor. The top of the concrete chamber is connected to several support bearings via a fixing rod. The drive shaft is interference-fitted into the support bearings. The drive shaft is fixedly connected to the outer end face of the sealing frame via the connecting plate. The drive motor is electrically connected to the control module assembly.

[0008] Preferably, the water level triggering assembly includes a first connecting rod, a first trigger head, a second trigger head, a trigger spring, and a second connecting rod. The first trigger head is fixed to the top of the substation assembly via the first connecting rod. A trigger hole is provided on the top of the concrete building. The trigger spring is fixed to the bottom of the trigger hole. The second trigger head is connected to the trigger spring via the second connecting rod. The first and second trigger heads are electrically connected to the control module assembly.

[0009] Preferably, the positioning assembly includes a positioning rod and a positioning spring. The side wall of the concrete chamber has an expansion hole. One end of the positioning spring is fixed inside the expansion hole. One end of the positioning rod is slidably connected inside the expansion hole and fixedly connected to one end of the positioning spring. The end of the positioning rod outside the expansion hole has a wedge-shaped structure. The sealing frame in the sealing assembly has a positioning hole on its side end face. This structure allows the end of the positioning rod to be inserted into the positioning hole when the sealing assembly is fastened to the inspection port and the positioning rod are on the same horizontal plane, thus positioning the sealing frame. A push rod is fixed to the end of the positioning rod outside the expansion hole.

[0010] Preferably, the sealing assembly and the positioning assembly are provided with a stop trigger assembly, which constitutes a structure in which the positioning assembly engages and positions the sealing assembly, and the stop trigger assembly triggers the drive assembly to cut off power and stop the rotation of the sealing assembly. The stop trigger assembly includes a third trigger head, a trigger plate and a third connecting rod. The third trigger head is fixed in the positioning hole by the third connecting rod, and the trigger plate is fixed on the inclined surface of the end of the wedge-shaped head structure of the positioning rod, which constitutes a structure in which the third trigger head and the trigger plate abut against each other after the positioning rod is inserted into the positioning hole. The third trigger head and the trigger plate are electrically connected to the control module assembly.

[0011] Preferably, a first magnet is fixed on the sealing frame of the sealing assembly, and a second magnet is fixed on the inner top of the concrete chamber, forming a structure in which the sealing assembly is positioned on the inner top of the concrete chamber by the first magnet and the second magnet when it is not fastened to the inspection port.

[0012] The technical solution of the present invention can achieve the following beneficial effects: (1) The support platform composed of the horizontal part, the inclined part and the grooved part allows the power distribution unit assembly to be installed at the highest point of the support platform. When a small amount of water enters the concrete room, the water will flow along the inclined part to the grooved part, avoiding water entering the power distribution unit assembly when the concrete room is flooded; (2) The float and the limiting rod make it easy to use the float to detach the power distribution unit assembly from the support platform and float it on the water surface after water enters the concrete room, avoiding excessive water entering the power distribution unit assembly and causing leakage, short circuit and other problems. At the same time, the float is limited by multiple limiting rods, so that the float can only move up and down along the length of the limiting rod; (3) The water level trigger component is used so that when the power distribution unit assembly rises to a certain height with the water, the water level trigger component is triggered, and then the control module assembly controls the drive component to drive the sealing component to fasten to the inspection port, so that the sealing component seals the inspection port; (4) The sealing component seals the inspection port. The components enable the vent connector and the connector to connect when the sealing component is fastened to the inspection port, so that the air source can be filled into the sealing balloon through the air supply pipe, so that the sealing balloon expands and seals the inspection port, preventing water from entering the concrete room from the inspection port; (5) the drive component facilitates the rotation of the sealing component, so that the sealing component is moved away from the inspection port when not needed, so as to avoid affecting the normal entry and exit of the inspection port by the staff, and the sealing component is fastened to the inspection port when the water level in the concrete room reaches a certain height; (6) the positioning component enables the sealing component to be snapped and positioned when the sealing component is fastened to the inspection port, so as to prevent the sealing component from automatically detaching from the inspection port; (7) the stop trigger component enables the stop trigger component to be triggered when the positioning component positions the sealing component, so as to control the drive component to stop working and stop driving the sealing component to rotate; the technical solution of the present invention has a wide application prospect in the field of power distribution station assembly technology. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the sealed structure of the underground concealed substation of the present invention.

[0014] Figure 2 for Figure 1 Enlarged view of region A in the middle.

[0015] Figure 3 for Figure 1 Enlarged view of region B in the middle.

[0016] Figure 4 This is a schematic diagram of the normal state structure of the underground concealed substation of the present invention.

[0017] Among them, 1. Concrete house, 2. Substation assembly, 3. Support platform, 101. Horizontal part, 102. Inclined part, 103. Groove part, 4. Floating platform, 5. Limiting rod, 6. Inspection port, 7. First magnet, 8. Second magnet, 201. Sealing frame, 202. Sealing block, 203. Sealing gasket, 204. Sealing balloon, 205. Gas pipe, 206. Connector, 207. Vent connector, 208. Support plate, 209. Sealing gasket, 301. Connecting plate, 3 02. Drive shaft; 303. Support bearing; 304. Fixing rod; 305. Drive motor; 306. Connecting seat; 401. First connecting rod; 402. First trigger head; 403. Trigger spring; 404. Second connecting rod; 405. Second trigger head; 406. Trigger hole; 501. Telescopic hole; 502. Positioning spring; 503. Positioning rod; 504. Push rod; 505. Positioning hole; 601. Third connecting rod; 602. Third trigger head; 603. Trigger plate. Detailed Implementation

[0018] The technical solutions of various embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0019] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] like Figure 1-4 The underground concealed substation shown includes a substation assembly 2 installed inside an underground concrete chamber 1. This underground installation saves space above ground and provides greater concealment and safety. A support platform 3 is located at the bottom of the concrete chamber 1, and from top to bottom, the support platform 3 has a horizontal section 101, an inclined section 102, and a recessed section 103. The substation assembly 2 is positioned on the horizontal section 101, placing it at a higher position within the concrete chamber 1. When water enters the concrete chamber 1, it flows along the inclined section 102 and collects in the recessed section 103. A water pump installed in the recessed section 103 can drain the water from the concrete chamber 1, preventing the substation assembly 2 from being immediately submerged upon entering the chamber. Multiple limiting rods 5 are detachably fixed to the support platform 3 with bolts, connecting the limiting rods 5 to the support platform 3 to form a unified whole. A floating platform 4 is slidably mounted on the limiting rod 5, allowing the floating platform 4 to slide up and down along the length of the limiting rod 5. This ensures that the float remains afloat when water enters the concrete chamber 1. The substation assembly 2 is detachably mounted on the floating platform 4 via bolts, connecting the substation assembly 2 to the floating platform 4. This also ensures that the substation assembly 2 remains afloat when water enters the concrete chamber 1, preventing water ingress that could cause leakage or short circuits.

[0021] like Figure 1-4The underground concealed substation shown has an access port 6 at the top of the concrete building 1, away from the substation assembly 2. This access port allows personnel to easily enter and exit the concrete building 1 for maintenance of the substation assembly 2. A sealing assembly is installed on the inner top of the concrete building 1 at the access port 6. This assembly seals the access port 6 during flooding, preventing floodwater from entering the concrete building 1 and submerging the substation assembly 2. The sealing assembly includes a sealing frame 201 and a sealing bulb. An arc-shaped sealing block 202 is welded to or detachably fixed to the sealing frame 201 with bolts. A sealing gasket 203 is detachably fixed to the outer end face of the sealing block 202 with bolts. The sealing frame 201 is connected to the sealing block 202 and the sealing gasket 203. After the sealing frame 201 is engaged with the access port 6, the sealing gasket 203 abuts against the access port 6, providing a preliminary seal. The sealing balloon is fixed to the sealing block 202 with adhesive, allowing it to inflate and expand, thus achieving a tight seal between the balloon and the inner wall of the inspection port 6. A detachable threaded connector is attached to the sealing frame 201, connecting it to the frame. An air supply pipe is located inside the sealing frame 201, with both ends connected to the connector and the sealing balloon, allowing air to be supplied to the balloon through these connections, causing it to expand. A vent connector is detachably bolted to the concrete chamber 1, allowing the connector to be inserted into the vent connector after the sealing frame 201 is engaged with the inspection port 6, connecting the connector and the vent connector. The vent connector is connected to an air source, facilitating the supply of sufficient air to the vent connector, which is then delivered to the sealing balloon through the connector and air supply pipe, causing the balloon to inflate and seal the inspection port 6. The air source is a gas cylinder or air pump, ensuring a sufficient air supply to the vent connector. A support plate is detachably threaded onto the connector head, allowing it to connect to the connector. A sealing ring is provided on the support plate, creating a tight seal between the vent connector and the sealing ring after the connector is inserted. This seals any gaps between the support plate and the vent connector, preventing air leakage and ensuring proper inflation of the sealing balloon. A first magnet 7 is detachably fixed to the sealing frame 201 via a pull block, and a second magnet 8 is detachably fixed to the inner top of the concrete chamber 1 via bolts. This design positions the sealing assembly at the inner top of the concrete chamber 1 when not engaged with the access port 6, utilizing the attraction between opposite poles of magnets. Under normal conditions, the sealing frame 201 is away from the access port 6. When fixed to the inner bottom of the concrete chamber 1 by the first magnet 7 and the second magnet 8, the sealing frame 201 is prevented from freely drooping and occupying internal space.

[0022] like Figure 1-4The underground concealed substation shown has a sealing assembly connected to a drive assembly. The drive assembly rotates the sealing assembly, causing it to engage with and seal the inspection port 6. This ensures that when water enters the concrete chamber 1, the drive assembly rotates the sealing assembly, causing it to engage with and seal the inspection port 6. The drive assembly includes a drive motor 305, a drive shaft 302, and a connecting plate 301. The drive motor 305 is detachably fixed to the top of the concrete chamber 1 by bolts via a connecting seat 306, connecting the drive motor 305 to the concrete chamber 1. The drive shaft 302 is detachably fixed to the output shaft of the drive motor 305 via a coupling, allowing the output shaft of the drive motor 305 to rotate the drive shaft 302. Several support bearings 303 are detachably bolted to the top of the concrete chamber 1 via fixing rods 304, fixing the support bearings 303 to the inner top of the concrete chamber 1 via the fixing rods 304. The drive shaft 302 is interference-fitted into the support bearing 303, which supports and limits the drive shaft 302 without affecting the output shaft of the drive motor 305, allowing the drive shaft 302 to rotate relative to the support bearing 303. The drive shaft 302 is detachably bolted to the outer end face of the sealing frame 201 via the connecting plate 301, connecting the drive shaft 302 to the sealing block 202. This allows the rotation of the drive shaft 302 to rotate the sealing frame 201, thereby rotating the entire sealing assembly and allowing it to engage with the inspection port 6. The drive motor 305 is electrically connected to the control module assembly, which is a common single-chip microcomputer control module available on the market, facilitating control of the drive motor 305.

[0023] like Figure 1-4The underground concealed substation shown has water level triggering components on the top of the substation assembly 2 and the inner top of the concrete chamber 1. This forms a structure where the water level triggering component triggers the drive assembly to rotate the sealing assembly. In the event of flooding, floodwater enters the concrete chamber 1 through the inspection port 6. Driven by the floating platform 4, the substation assembly 2 moves upward along the limit rod 5 as the water level rises until it reaches the inner top of the concrete chamber 1. During this upward movement, the water level triggering component is activated when the substation assembly 2 reaches a certain height. The water level triggering component and the drive assembly are electrically connected to a control module assembly. When the water level triggering component is activated, its trigger signal is transmitted to the control module assembly, which receives and processes the trigger signal to control the drive motor 305. The water level triggering assembly includes a first connecting rod 401, a first trigger head 402, a second trigger head 405, a trigger spring 403, and a second connecting rod 404. The first trigger head 402 is detachably fixed to the top of the substation assembly 2 via bolts through the first connecting rod 401, allowing the first trigger head 402 to move simultaneously with the substation assembly 2. A trigger hole 406 is provided on the top of the concrete chamber 1. One end of the trigger spring 403 is detachably fixed to the bottom of the trigger hole 406 via bolts, fixing the trigger spring 403 within the trigger hole 406. The second trigger head 405 is fixedly connected to the trigger spring 403 via the second connecting rod 404, connecting the second trigger head 405 within the trigger hole 406. The trigger spring 403 provides a certain elastic force to the second trigger head 405, allowing the second trigger head 405 to move within the trigger hole 406. The first trigger head 402 and the second trigger head 405 are electrically connected to the control module assembly, so that when the first trigger head 402 and the second trigger head 405 come into contact, a trigger signal is generated. The control module assembly receives and processes the trigger signal, thereby controlling the drive motor 305 to operate. The control module assembly is electrically connected to a flashing light and a buzzer, so that when the water level triggering component is triggered, the control module assembly controls the flashing light and buzzer to operate, emitting an audible and visual alarm to alert outside personnel that a large amount of water has entered the concrete room 1.

[0024] like Figure 1-4The underground concealed substation shown has a positioning component installed on the top of the concrete chamber 1. This component engages and positions the sealing component, preventing it from automatically detaching from the inspection port 6. The positioning component includes a positioning rod 503 and a positioning spring 502. A telescopic hole 501 is provided in the side wall of the concrete chamber 1. One end of the positioning spring 502 is detachably fixed to the telescopic hole 501 with bolts. One end of the positioning rod 503 is slidably connected to the telescopic hole 501 and fixed to the end of the positioning spring 502 with adhesive. This connection allows the positioning spring 502 to provide elastic force to the positioning rod 503, ensuring that the positioning rod 503 always partially protrudes from the telescopic hole 501 when no external force is applied. The positioning rod 503 has a wedge-shaped structure at one end outside the telescopic hole 501. This wedge-shaped structure allows the positioning rod 503 to retract into the telescopic hole 501 during the process of the sealing frame 201 being fastened to the access port 6. A positioning hole 505 is provided on the side end face of the sealing frame 201 in the sealing assembly. When the sealing assembly is fastened to the access port 6, the end of the positioning rod 503 is inserted into the positioning hole 505 to position the sealing frame 201. This structure allows the sealing frame 201 to be opened and positioned by inserting one end of the positioning rod 503 into the positioning hole 505, preventing the sealing frame 201 from automatically detaching from the access port 6. A push rod 504 is welded to or detachably fixed to the end of the positioning rod 503 outside the telescopic hole 501. This allows manual movement of the positioning rod 503 via the push rod 504, facilitating the release of the locking state between the positioning rod 503 and the sealing block 202.

[0025] like Figure 1-4The underground concealed substation shown has a stop-trigger component on both the sealing and positioning components. This constitutes a structure where, after the positioning component engages with the sealing component, the stop-trigger component triggers the drive component to cut off power and stop the rotation of the sealing component. This also stops the drive motor 305 from operating. The stop-trigger component includes a third trigger head 602, a trigger plate 603, and a third connecting rod 601. The third trigger head 602 is detachably bolted or welded to the positioning hole 505 via the third connecting rod 601, allowing it to be connected to the sealing frame 201 within the positioning hole 505. The trigger plate 603 is embedded and fixed on the inclined surface of the wedge-shaped head structure of the positioning rod 503, forming a structure in which the third trigger head 602 and the trigger plate 603 abut against each other after the positioning rod 503 is inserted into the positioning hole 505. The third trigger head 602 and the trigger plate 603 are electrically connected to the control module assembly, so that after the positioning rod 503 is inserted into the positioning hole 505, the third trigger head 602 and the trigger plate 603 contact to generate a trigger signal. The control module assembly receives and processes the trigger signal, causing the drive motor 305 to be de-energized and stop working, thereby causing the sealing frame 201 to stop rotating.

[0026] Unless otherwise specified, the equipment components involved in the above embodiments are all conventional equipment components, and the structural settings, working methods or control methods involved are all conventional settings, working methods or control methods in the art unless otherwise specified.

[0027] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An underground concealed substation, comprising a substation assembly (2) installed in an underground concrete building (1), characterized in that, The concrete house (1) has a support platform (3) at its inner bottom. Multiple limiting rods (5) are fixed on the support platform (3). A floating platform (4) is slidably installed on the limiting rods (5). The power distribution unit assembly (2) is installed on the floating platform (4). The top of the concrete house (1) away from the power distribution unit assembly (2) has an inspection port (6). A sealing component is installed on the inner top of the concrete house (1) at the inspection port (6). The sealing component is connected to a driving component, which drives the sealing component to rotate, thereby sealing the inspection port (6) by engaging the sealing component. A water level triggering component is provided on the top of the power distribution unit assembly (2) and the inner top of the concrete house (1), which triggers the driving component to rotate the sealing component. The water level triggering component and the driving component are electrically connected to a control module assembly. A positioning component is provided on the inner top of the concrete house (1), which positions the sealing component by engaging the positioning component.

2. The underground concealed substation according to claim 1, characterized in that, The support platform (3) is provided with a horizontal part (101), an inclined part (102) and a groove part (103) from top to bottom, and the power distribution station assembly (2) is arranged on the horizontal part (101).

3. The underground concealed substation according to claim 1, characterized in that, The sealing assembly includes a sealing frame (201) and a sealing balloon. An arc-shaped sealing block (202) is fixed inside the sealing frame (201). A sealing gasket (203) is fixed on the outer end face of the sealing block (202). The sealing balloon is fixed on the sealing block (202).

4. The underground concealed substation according to claim 3, characterized in that, A connector is connected to the sealing frame (201), a venting connector is fixed on the concrete chamber (1), an air supply pipe is provided inside the sealing frame (201), the two ends of the air supply pipe are respectively connected to the connector and the sealing balloon, the venting connector is connected to the air source, a support plate is fixed on the connector, and a sealing ring is provided on the support plate, forming a structure in which the venting connector and the sealing ring are in close contact after the connector is inserted into the venting connector.

5. The underground concealed substation according to claim 1, characterized in that, The drive assembly includes a drive motor (305), a drive shaft (302), and a connecting plate (301). The drive motor (305) is fixed to the top of the concrete chamber (1) via a connecting seat (306). The drive shaft (302) is fixedly connected to the output shaft of the drive motor (305). The top of the concrete chamber (1) is connected to several support bearings (303) via a fixing rod (304). The drive shaft (302) is interference-fitted into the support bearings (303). The drive shaft (302) is fixedly connected to the outer end face of the sealing frame (201) via the connecting plate (301). The drive motor (305) is electrically connected to the control module assembly.

6. The underground concealed substation according to claim 1, characterized in that, The water level triggering assembly includes a first connecting rod (401), a first trigger head (402), a second trigger head (405), a trigger spring (403), and a second connecting rod (404). The first trigger head (402) is fixed to the top of the substation assembly (2) via the first connecting rod (401). A trigger hole (406) is provided on the top of the concrete building (1). The trigger spring (403) is fixed to the bottom of the trigger hole (406). The second trigger head (405) is connected to the trigger spring (403) via the second connecting rod (404). The first trigger head (402) and the second trigger head (405) are electrically connected to the control module assembly.

7. The underground concealed substation according to claim 1, characterized in that, The positioning assembly includes a positioning rod (503) and a positioning spring (502). The side wall of the concrete chamber (1) is provided with a telescopic hole (501). One end of the positioning spring (502) is fixed in the telescopic hole (501). One end of the positioning rod (503) is slidably connected in the telescopic hole (501) and fixedly connected to one end of the positioning spring (502). The end of the positioning rod (503) outside the telescopic hole (501) is a wedge-shaped structure. The side end face of the sealing frame (201) in the sealing assembly is provided with a positioning hole (505). When the sealing assembly is fastened to the inspection port (6), the end of the positioning rod (503) is inserted into the positioning hole (505) to position the sealing frame (201). A push rod (504) is fixed to one end of the positioning rod (503) outside the telescopic hole (501).

8. The underground concealed substation according to claim 1, characterized in that, The sealing component and the positioning component are provided with a stop trigger component, which constitutes a structure in which the positioning component is engaged and positioned with the sealing component, and the stop trigger component is triggered to realize the power failure of the drive component and stop the rotation of the sealing component. The stop trigger component includes a third trigger head (602), a trigger plate (603) and a third connecting rod (601). The third trigger head (602) is fixed in the positioning hole (505) through the third connecting rod (601). The trigger plate (603) is fixed on the inclined surface of the end of the wedge-shaped head structure of the positioning rod (503), which constitutes a structure in which the third trigger head (602) and the trigger plate (603) abut against each other after the positioning rod (503) is inserted into the positioning hole (505). The third trigger head (602) and the trigger plate (603) are electrically connected to the control module assembly.

9. The underground concealed substation according to claim 1, characterized in that, The sealing assembly has a first magnet (7) fixed on the sealing frame (201) and a second magnet (8) fixed on the inner top of the concrete chamber (1), forming a structure in which the sealing assembly is positioned on the inner top of the concrete chamber (1) by the first magnet (7) and the second magnet (8) when it is not fastened to the inspection port (6).

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