Tower foundation grounding system

Abstract

The invention discloses a pole tower foundation grounding system, and relates to the technical field of pole towers, the pole tower foundation grounding system comprises a grounding device used for leading electricity and a base used for supporting the pole towers, the grounding device comprises a grounding wire connected with the pole towers and a metal structure buried underground, the grounding wire penetrates into the pole towers at least from the lower portions of the pole towers, and the metal structure is embedded in the metal structure. A middle transition device is inserted into the base, a grounding wire in the tower is electrically connected to the metal structure through the middle transition device, the middle transition device comprises a shell and a first grounding rod vertically arranged in the shell, the shell is vertically installed in the base, and the upper end of the first grounding rod extends out of the shell and is connected to the grounding wire in the tower; an opening is formed in the upper portion of the base, a channel communicated with the lower portion of the shell is formed in the upper portion of the base, a sealing cover used for sealing the opening is installed at the opening in the upper portion of the base, and a transfer mechanism used for supporting the shell is arranged in the channel. The tower grounding structure has the effect of reducing the possibility that the tower grounding structure is accidentally damaged due to being exposed outside.

Description

Technical Field

[0001] This application relates to the field of pole and tower technology, and in particular to a pole and tower foundation grounding system. Background Technology

[0002] The main power grid and distribution network are power transmission and transformation networks. In the process of power transmission and transformation between the two, in addition to facilities such as cables, there is another important facility: poles and towers. Pole and tower are pole-shaped or tower-shaped structures that support the overhead transmission line conductors and overhead ground wires and maintain a certain distance between them and the ground, such as power poles and power towers. In order to reduce transmission line faults and damage caused by lightning strikes, poles and towers are usually equipped with grounding systems to prevent lightning damage.

[0003] The existing grounding structures used in some of the towers are as follows:

[0004] Grounding wires are laid along the exposed concrete structure of the utility pole and extended downwards into the ground;

[0005] A grounding wire is installed on the power tower, and the grounding wire is connected downwards to other metal structures buried underground.

[0006] However, the above-mentioned pole grounding methods usually leave part of the grounding structure directly exposed. Since most utility poles and power towers are not located in uninhabited areas, the exposed grounding structure may be damaged by human activities, animal activities, etc., and it is difficult for relevant personnel to know about the damage in time, resulting in safety hazards. Therefore, this application proposes a new technical solution. Summary of the Invention

[0007] To reduce the possibility of accidental damage to exposed tower grounding structures, this application provides a tower foundation grounding system.

[0008] This application provides a tower foundation grounding system, which adopts the following technical solution:

[0009] A tower foundation grounding system includes a grounding device for conducting electricity and a base for supporting the tower, characterized in that: the grounding device includes a grounding wire connecting the tower and a metal structure buried underground, the grounding wire passing through the interior of the tower at least at the lower part, an intermediate transition device inserted in the base, and the grounding wire in the tower being electrically connected to the metal structure through the intermediate transition device.

[0010] Optionally, the intermediate transition device includes a housing and a grounding rod one vertically built into the housing. The housing is vertically installed inside the base. The upper end of the grounding rod one extends out of the housing and is connected to a grounding wire inside the tower. The upper part of the base is open and has a channel communicating with the lower part of the housing. The height of the channel is not less than the height of the housing. The opening at the upper part of the base is fitted with a cover for sealing the opening. A transfer mechanism for supporting the housing is provided in the channel. The transfer mechanism includes a movable block located below the housing and a grounding rod two vertically built into the movable block. The upper end of the grounding rod two is connected to the lower end of the grounding rod, and the lower end is connected to a metal structure pre-embedded in the ground.

[0011] Optionally, the transfer mechanism further includes an elastic layer arranged laterally within the moving block, the elastic layer separating the moving block into an upper block and a lower block, the upper block being recessed towards the middle portion of the lower block, and the middle portion of the lower block having a corresponding protrusion; the grounding rod passes through the upper block, the elastic layer, and the lower block; a gripping handle for removing the moving block is fixed on the side of the upper block near the base opening.

[0012] Optionally, the transfer mechanism further includes a telescopic unit, which includes a rotating wheel and a spring-loaded axle installed inside the rotating wheel. The rotating wheel is vertically installed in the channel of the base and away from the opening of the base. The grounding wire pre-embedded in the ground passes around the rotating wheel from bottom to top and enters the side of the lower block laterally, connecting to the lower end of the grounding rod. The displacement of the grounding wire causes the rotating wheel to rotate synchronously. The spring-loaded axle is fixed around the axle and one end extends out of the rotating wheel and is fixed to the lower side of the grounding wire. A notch with a height not less than that of the rotating wheel is provided at one corner of the bottom of the lower block near the inner side of the channel, and the notch faces the rotating wheel.

[0013] Optionally, a fixing mechanism is also included, which includes a collar, a vertical rod, and a sleeve. The collar is fixed to the inside of the base opening and is located above the grounding wire in the base channel. The vertical rod is inserted vertically into the collar and temporarily fixed. The sleeve is detachably connected to the lower end of the vertical rod. A locking unit is fixed to the lower end of the sleeve. A groove is provided on the base below the locking unit for lowering the locking unit to clamp the grounding wire.

[0014] Optionally, the fixing mechanism further includes a bending rod, one end of which is detachably connected to the upper end of the vertical rod, and the other end extends upward and bends; the middle part of the gripping handle is provided with a through cavity, and the bending rod is used to extend into the cavity of the gripping handle and hook the gripping handle.

[0015] Optionally, the fixing mechanism further includes a pin for temporarily fixing the housing, the housing having a transverse hole on its side, the pin being transversely inserted into the base, one end of the pin extending into the hole on the side of the housing, and the other end extending out of the opening inside the base.

[0016] Optionally, a drainage mechanism is also included, comprising a drainage pipe vertically embedded below a channel in the base. One end of the drainage pipe is connected to the bottom of the channel in the base, and the other end is bent multiple times and extends downward into a pre-set drainage channel in the base. A float ball is installed inside the drainage pipe to prevent backflow of accumulated water. The diameter of the float ball is at least smaller than the diameter of the drainage pipe, and the diameter of the opening of the drainage pipe connected to the base is at least smaller than the diameter of the float ball.

[0017] Optionally, it also includes an inspection mechanism, which is installed inside the movable block. The inspection mechanism includes at least a detection circuit consisting of a power supply module, a signal transmission module, a controller, and a detection unit. The signal transmission module and the detection unit are electrically connected to the controller.

[0018] The intermediate transition device also has a circuit rod fixed inside its housing. The upper end of the circuit rod extends out of the housing, bends and connects to the side of the first grounding rod. The lower end of the circuit rod extends out of the housing and connects to one end of the detection circuit inside the moving block. The second grounding rod is electrically connected to the other end of the detection circuit to form a circuit.

[0019] The controller is configured as follows:

[0020] Obtain the real-time current value I1 detected by the detection unit;

[0021] If the real-time current value I1 exceeds the preset current safety threshold I0, a warning message will be sent to the staff's mobile device via the signal transmission module.

[0022] In summary, this application has the following beneficial technical effects: by pre-setting the tower grounding structure inside the base during the casting process, this application avoids the possibility of accidental damage to the tower grounding structure due to direct exposure, and the pre-set channel in the base facilitates subsequent maintenance of the grounding structure. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application.

[0024] Figure 2 yes Figure 1 Enlarged cross-sectional view of part A.

[0025] Figure 3 This is a cross-sectional structural schematic diagram of the intermediate transition device of this application.

[0026] Figure 4This is a cross-sectional structural diagram of the transit facility of this application.

[0027] Figure 5 This is a cross-sectional structural diagram of the drainage mechanism of this application.

[0028] Figure 6 This is a schematic diagram of the wiring connections of the inspection agency in this application.

[0029] Figure 7 This is a connection block diagram of the controller in this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Grounding wire; 2. Base; 3. Intermediate transition device; 31. Housing; 32. Grounding rod one; 33. Return rod; 4. Cover; 5. Transfer mechanism; 51. Moving block; 511. Upper block; 512. Lower block; 52. Grounding rod two; 53. Elastic layer; 54. Grip handle; 55. Telescopic unit; 551. Rotating wheel; 552. Spring; 6. Fixing mechanism; 61. Collar; 62. Vertical rod; 63. Sleeve; 64. Locking unit; 65. Bending rod; 66. Pin; 7. Drainage mechanism; 71. Drain pipe; 72. Float; 8. Inspection mechanism; 81. Power supply module; 82. Signal transmission module; 83. Controller. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0032] Reference Figure 1 and Figure 2 This application discloses a pole foundation grounding system, including a grounding device and a base 2. The base 2 is a load-bearing structure used to support and fix the pole in the soil, and is usually made of reinforced concrete. The grounding device includes a grounding wire 1 and a metal structure pre-embedded in the ground. One end of the grounding wire 1 is electrically connected to the structure of the utility pole or power tower that needs to be grounded, such as the tower body or cable support structure. The other end of the grounding wire 1 is not exposed in this application, but is inserted into the foot of the pole (such as the lower end of the utility pole or the foot of the power tower) from a height at least higher than the average person's height (e.g., 2.5m), and then a metal ring is fixed therein.

[0033] An intermediate transition device is pre-embedded in the base. A metal ring is electrically connected to the intermediate transition device 3, and the intermediate transition device is electrically connected to the underground buried metal structure, thus forming a complete grounding system. The aforementioned metal structure can be a vertical metal rod, a horizontal metal frame, or other structures. Existing technologies can be adopted according to the underground conditions where the tower is located.

[0034] It is understandable that the grounding structure of this application will not be exposed in places where people or animals may easily come into contact with it, and therefore it is relatively less likely to be accidentally damaged.

[0035] The intermediate transition device 3 includes a housing 31 and a grounding rod 32. The housing 31 can be a concrete column structure, and the grounding rod 32 is vertically embedded in it with both ends extending outwards.

[0036] A hole for fitting the housing 31 is opened or reserved in the base 2. During installation, the housing 31 is inserted into the hole and the upper end of the grounding rod 32 extends out of the base 2, so that the upper end of the grounding rod 32 is connected to the grounding wire 1 inside the tower. The connection method is: inserted into the metal ring mentioned above. The housing 31 can be made of concrete, and a layer of elastic rubber is wrapped around the outside of the housing 31 to reduce the possibility of rain penetration into the cavity. The grounding rod 32 can be a commonly used grounding metal conductor such as galvanized flat steel.

[0037] Considering that grounding rod 32 may still be corroded due to environmental temperature and humidity after long-term use, which increases the resistance of the grounding structure and causes safety hazards, grounding rod 32 needs to be inspected regularly and replaced in time if severely corroded. Since the intermediate transition device 3 is buried in the base 2, neither grounding rod 32 nor the grounding wire 1 inside the tower is exposed to the outside, so grounding rod 32 cannot be replaced directly from the outside.

[0038] Reference Figure 2 In this embodiment, to solve the above problems, when casting the base 2, an opening and a channel connecting the opening to the bottom of the shell 31 are reserved in the upper part of the base 2. The height of the channel is not less than the height of the shell 31, so that the workers can take the shell 31 out from below. In order to prevent rainwater from entering the opening of the base 2, a cover 4 is installed in the opening at the upper part of the base 2. In this embodiment, the cover 4 is preferably a cast iron well cover with a silicone waterproof ring on the edge to enhance the airtightness of the channel. In order to facilitate opening the cover 4, a handle for easy pulling is installed on the upper part of the cover 4.

[0039] Considering that although the shell 31 can provide some support by fitting tightly to the base 2, if there is no reliable load-bearing structure under the shell 31, the shell 31 may still sink and fall into the channel after long-term use. Therefore, in this embodiment, the lower end of the connecting rod is not directly connected to the metal structure pre-embedded in the ground, but is connected to the metal structure through the transfer mechanism 5 set in the channel.

[0040] Reference Figure 3 and Figure 4The relay mechanism 5 includes a movable block 51 located below the housing 31 and a second grounding rod 52 vertically embedded in the movable block 51. The movable block 51 is preferably made of rubber with a low surface friction coefficient and corrosion resistance. The upper end of the second grounding rod 52 is connected to the lower end of the first grounding rod 32. The connection method is as follows: a concave hole with a larger diameter at the top and a smaller diameter at the bottom is opened in the upper part of the movable block 51. The upper end of the second grounding rod 52 is fixed to the bottom of the concave hole, so that the lower end of the first grounding rod 32 can be inserted into the concave hole and connected to the second grounding rod 52. The lower end of the second grounding rod 52 is connected to a metal structure pre-buried in the ground, thereby forming a grounding circuit.

[0041] According to the above settings, when it is necessary to replace the first grounding rod 32, the staff can first take out the moving block 51 through the opening on the base 2 and then take out the housing 31 to replace the first grounding rod 32. It can be understood that if it is necessary to replace the second grounding rod 52, it is only necessary to take out the moving block 51 and then take out the second grounding rod 52.

[0042] In summary, this application avoids the possibility of accidental damage to the tower grounding structure due to direct exposure by pre-setting the tower grounding structure inside the base 2 during the casting process, and facilitates subsequent maintenance of the grounding structure through the pre-set channel in the base 2.

[0043] Considering that the movable block 51 needs to support the housing 31 and allow the grounding rod 32 to be inserted into the recessed hole on the upper part of the housing 31, if it relies solely on the elasticity of the movable block 51 itself, and pushes it into the inner side of the channel after squeezing the movable block 51 to achieve the insertion of the grounding rod 32, the upper part of the movable block 51 will easily be worn by the end of the grounding rod 32.

[0044] Reference Figure 3 and Figure 4 In another embodiment of this application, in order to solve the above-mentioned problems, the transfer mechanism 5 further includes an elastic layer 53 arranged laterally in the movable block 51. The elastic layer 53 divides the movable block 51 into an upper block 511 and a lower block 512. The second grounding rod 52 passes through the upper block 511, the elastic layer 53 and the lower block 512. In this embodiment, the elastic layer 53 is preferably made of a material with good elasticity, such as PU (polyurethane), so that the movable block 51 can be directly squeezed to compress the elastic layer 53 during use, so that the movable block 51 can pass through the channel instead of being squeezed under the first grounding rod 32. After the elastic layer 53 rebounds, the movable block 51 squeezes and supports the housing 31, so that the first grounding rod 32 and the second grounding rod 52 are tightly connected.

[0045] To facilitate the removal or insertion of the movable block 51 within the passage, the upper block 511 is recessed inward toward the middle portion of the lower block 512, and the middle portion of the lower block 512 is provided with a protrusion corresponding to the recess. A gripping handle 54 for removing or inserting the movable block 51 is fixed on the side of the upper block 511 near the opening of the base 2. The gripping handle 54 is preferably made of insulating rubber. This design is because when the worker applies force to the gripping handle 54 outward / inward, the upper block 511 can drag the lower block 512 to move outward / inward together.

[0046] Considering that if the second grounding rod 52 inside the movable block 51 is directly fixed to the underground metal structure, the movable block 51 will be difficult to move in the channel because the second grounding rod 52 does not have extensibility. Therefore, it is necessary to fix another grounding wire 1 (such as copper wire) to the metal structure. The grounding wire 1 extends from the ground to the base 2 and is connected to the second grounding rod 52. However, this connection method may cause excess grounding wire 1 to block the channel after the movable block 51 moves out of the channel.

[0047] Reference Figure 4 In another embodiment of this application, in order to solve the above problems, the transfer mechanism 5 further includes a telescopic unit 55. The telescopic unit 55 includes a rotating wheel 551 that is hollow inside and has a shaft fixed to its shaft. The rotating wheel 551 is vertically installed in the corner of the channel of the base 2 and away from the opening of the base 2. The installation method is as follows: support rods are fixed at both ends of the shaft of the rotating wheel 551, and the bottom end of the support rod is fixed to the channel; the grounding wire 1 connected to the metal structure passes around the rotating wheel 551 from bottom to top and passes horizontally into the side of the lower block 512. A rough rubber layer is fixed on the surface of the rotating wheel 551 so that the displacement of the grounding wire 1 can drive the rotating wheel 551 to rotate synchronously; in order to prevent the grounding wire 1 from detaching from the rotating wheel 551, in this embodiment, circular baffles with a diameter larger than the rotating wheel 551 are fixed on both sides of the rotating wheel 551, and an arc-shaped baffle is fixed between the two circular baffles above the grounding wire 1 passing around the rotating wheel 551.

[0048] In order for the rotating wheel 551 to drive the grounding wire 1 to retract, a spring 552 is fixed around the shaft of the rotating wheel 551. One end of the spring 552 extends out of the rotating wheel 551 and is fixed to the lower side of the grounding wire 1, so that when the grounding wire 1 is stretched, the spring 552 can be stretched synchronously and accumulate elastic potential energy, and release the elastic potential energy when the grounding wire 1 is released, so that the grounding wire 1 is retracted. It can be understood that in the initial state of the spring 552, the moving block 51 is located directly below the grounding rod 32.

[0049] With the above settings, when the staff puts the moving block 51 back into the channel, the rotating wheel 551 is driven to rotate by the spring 552, which can automatically retract the grounding wire 1 and automatically return the moving block 51 to its original position.

[0050] Reference Figure 3 and Figure 4 Considering that when the moving block 51 is retracted to its original position, a certain space needs to be reserved on the moving block 51 to prevent the moving block 51 from colliding with the rotating wheel 551 and causing damage, a notch with a height not less than that of the rotating wheel 551 is provided at one corner of the bottom of the lower block 512 near the inner side of the channel. The notch can at least accommodate the rotating wheel 551, and the notch faces the rotating wheel 551.

[0051] Understandably, after the movable block 51 is removed from the base 2, the staff needs to perform tasks such as replacing the grounding rod 32. Therefore, the movable block 51 cannot be manually held for a long time. However, if the movable block 51 is released, it will retract due to the spring 552.

[0052] Reference Figure 2 In another embodiment of this application, to solve the above-mentioned problems, a fixing mechanism 6 is also installed on the opening side of the base 2. The fixing mechanism 6 includes an insulating collar 61, a vertical rod 62, and a sleeve 63 to reduce safety hazards. The collar 61 is fixed to the inside of the opening of the base 2, and the collar 61 is located above the grounding wire 1 in the channel of the base 2. The vertical rod 62 is inserted vertically into the collar 61 and temporarily fixed. The fixing method is as follows: a threaded hole and a hand-tightening bolt are opened on the side of the collar 61, and the vertical rod 62 is fixed by rotating the hand-tightening bolt. The sleeve 63 is temporarily fixed to the collar 61; the sleeve 63 is threaded to the lower end of the vertical rod 62, and a locking unit 64 is fixed at the lower end of the sleeve 63. In this embodiment, the locking unit 64 can be a vertical pulley. The pulley has an annular groove opened inward along its circumference. A rubber layer that increases the coefficient of friction is fixed around the annular groove, so that the grounding wire 1 can be temporarily fixed in the annular groove when the pulley is pressed down to prevent it from retracting. In order to cooperate with the locking unit 64 to clamp the grounding wire 1, a circular groove corresponding to the cross-sectional shape of the slide groove is also opened on the base 2 below the locking unit 64.

[0053] When in use, after the staff removes the moving block 51, it is necessary to further remove the intermediate transition device 3 to replace the grounding rod 32 and other work. At this time, the staff needs to insert the vertical rod 62 into the collar 61, and after rotating the connecting sleeve 63 at the lower end of the vertical rod 62, lower the vertical rod 62 so that the locking unit 64 can temporarily fix the grounding wire 1 in the groove of the base 2 so that it will not move. Then, the vertical rod 62 is temporarily fixed by hand-tightening the bolts.

[0054] Considering that if the movable block 51 is removed by hand, there is still a potential safety risk because the movable block 51 is in an environment with high voltage, even if the hands are wearing insulated gloves, appropriate tools are required when removing the movable block 51.

[0055] In another embodiment of this application, the fixing mechanism 6 further includes a bending rod 65. One end of the bending rod 65 is threaded to the upper end of the vertical rod 62, and the other end extends upward and bends twice to form a C-shape. A through cavity is provided in the middle part of the gripping handle 54 so that the bending rod 65 can extend into the cavity of the gripping handle 54 and hook the gripping handle 54, thereby replacing the operator's hand to pull the moving block 51 out of the channel.

[0056] In use, the operator removes the vertical rod 62 and rotates and fixes the bent rod 65 to the upper end of the vertical rod 62. The vertical rod 62 is then inverted for use, and the bent rod 65 is inserted into the cavity of the gripping handle 54 to hook the moving block 51. It is understandable that when the length of the vertical rod 62 is limited, the sleeve 63 can be rotated and fixed to the vertical rod 62 to extend the overall length.

[0057] It is understandable that when the moving block 51 is removed from the channel, the intermediate transition device 3 is still installed in the base 2 and is not supported by the moving block 51. Therefore, in order to prevent the housing 31 of the intermediate transition device 3 from sinking and falling into the channel, a temporary housing 31 is required.

[0058] In another embodiment of this application, the fixing mechanism 6 further includes a pin 66 for temporarily fixing the housing 31. The fixing method is as follows: a hole is opened laterally on the side of the housing 31, and the pin 66 is inserted laterally into the base 2, so that one end of the pin 66 extends into the hole of the housing 31 and the other end extends out of the opening inside the base 2, so as to facilitate use by the staff. In this embodiment, the pin 66 is preferably made of insulating material, and side plates are laterally fixed on both sides of the pin 66 extending into the base 2, so that the pin 66 can be relatively securely fixed to the base 2.

[0059] When in use, before the staff removes the movable block 51, it is necessary to ensure that the pin 66 is inserted into the hole on the side of the housing 31 so that the housing 31 can still be supported after the movable block 51 is removed, thereby reducing the possibility of the housing 31 sinking and falling into the channel; it is understood that the pin 66 can only serve as a temporary support for the housing 31, and cannot replace the movable block 51 to support the housing 31.

[0060] Considering that most of the towers are located outdoors and are affected by weather such as rain and snow, even though a cover 4 is installed at the opening of the base 2, there may still be water seepage or leakage in the channel.

[0061] Reference Figure 4 and Figure 5In another embodiment of this application, in order to solve the above problems, this application also includes a drainage mechanism 7, which includes a drainage pipe 71. The drainage pipe 71 is vertically embedded below the channel of the base 2. One end of the drainage pipe 71 is connected to the bottom of the channel of the base 2, and the other end is first bent to the side, then bent downward and extended, and the pipe diameter gradually increases and finally connects to the drainage channel preset in the base.

[0062] Considering that a large amount of water may accumulate in a short period of time due to external factors such as heavy rain, causing backflow of water into the drain pipe 71, in order to prevent this situation, in this embodiment, a float ball 72 is also installed inside the drain pipe 71 to prevent backflow of water. The diameter of the float ball 72 is smaller than the diameter of the drain pipe 71, and the diameter of the opening of the drain pipe 71 connecting to the base 2 is smaller than the diameter of the float ball 72. The reason for this setting is to ensure that the float ball 72 can block the opening of the drain pipe 71 connecting to the base 2 when backflow occurs, so that water will not flow into the channel of the base 2. In order to prevent the float ball 72 from falling down the drain pipe 71, a floor drain is installed horizontally inside the drain pipe. In this embodiment, the float ball 72 can be a spherical hollow rubber material.

[0063] Installation example: The top part of the drain pipe 71 is concave and conical, serving as a connection to the base 2, and has an opening smaller than the diameter of the drain pipe 71. This opening is connected to the base 2. The base 2 has a corresponding conical opening that is wider at the top and narrower at the bottom, which connects to the drain pipe 71, so as to guide the water accumulated in the base 2 into the drain pipe 71.

[0064] Considering that after the intermediate transition device 3 is buried in the base 2, although the environment is relatively closed, there is still a possibility that the grounding structure (i.e., grounding rod 1 32 and grounding rod 2 52) may be corroded by moisture, the staff still need to regularly inspect and maintain the grounding structure.

[0065] Reference Figure 6 and Figure 7 In another embodiment of this application, in order to facilitate the inspection and maintenance of the grounding structure by the staff, an inspection mechanism 8 is also installed inside the movable block 51. The inspection mechanism 8 is a detection circuit that includes at least a power supply module 81, a signal transmission module 82, a controller 83 and a detection unit, wherein the signal transmission module 82 and the detection unit are electrically connected to the controller 83.

[0066] In this embodiment, the power supply module 81 is preferably an inductive power source, that is, it draws power through the magnetic field generated by the transmission line of the tower using the magnetic field induction effect, and is electrically connected to a socket after the transfer transformer to power the detection circuit; the signal transmission module 82 is preferably a 4G / 5G signal module so that the corrosion status of the detected grounding structure can be directly fed back to the worker's mobile device (e.g., mobile phone) through the signal transmission module 82; the detection unit can be a current sensor; and the controller 83 can be a microcontroller controller.

[0067] Understandably, according to Ohm's Law I=U / R, the resistance and current in a circuit are inversely proportional. Therefore, the detection circuit can be connected to grounding rod 32 and grounding rod 52 by wires to form a loop, and the change in current in the loop can be detected to know the change in resistance of the grounding structure. Understandably, the greater the resistance of the grounding structure, the greater the degree of corrosion of the grounding structure.

[0068] According to the above, a loop rod 33 is also fixed inside the housing 31 of the intermediate transition device 3. The loop rod 33 is preferably a metal rod. The upper end of the loop rod 33 extends out of the housing 31 and is bent and connected to the side of the grounding rod 32. The lower end of the loop rod 33 extends out of the housing 31 and is connected to the wire at one end of the detection circuit inside the moving block 51. The lower end of the grounding rod 52 is electrically connected to the wire at the other end of the detection circuit to form a loop.

[0069] The circuit connection method of the loop rod 33 is as follows: a metal rod is vertically embedded in the moving block 51. A vertical metal spring is fixedly connected to the upper end of the metal rod, and a horizontal metal washer is fixed to the upper end of the metal spring. The metal washer is concave and faces the lower end of the loop rod 33. In use: the loop rod 33 abuts against and presses against the metal washer, so that the metal rod is connected to the loop rod 33 through the metal spring and the metal washer; a wire of the detection circuit is connected to the lower end of the metal rod.

[0070] In this embodiment, the controller 83 is configured as follows:

[0071] 1) Obtain the real-time current value I1 detected by the detection unit;

[0072] 2) If the real-time current value I1 exceeds the preset current safety threshold I0, a warning message will be sent to the staff's mobile device via the signal transmission module 82.

[0073] Understandably, the detection circuit can detect the real-time current value I0 in the loop. The current safety threshold I0 refers to the current range in the loop when the resistance of the grounding structure changes within the safe range. When the real-time current value I1 > I0, it indicates that the grounding structure may have exceeded the safe resistance value due to environmental corrosion, which may cause safety hazards. Therefore, it is necessary to immediately send a warning message to the staff's mobile device (such as a mobile phone). The warning message includes: the current real-time current value I0, the estimated resistance value of the grounding structure obtained by the controller 83 (obtained through Ohm's law), etc.

[0074] Considering that the detection circuit should periodically check the corrosion of the grounding structure, and that prolonged power supply to the detection circuit would increase the possibility of damage from lightning strikes, this embodiment also includes a normally open switch electrically connected to the controller. This normally open switch can be a relay, with the relay contacts connected to the detection circuit. In use, when the operator sends a signal to the controller via a mobile terminal, the controller controls the relay coil to be energized, causing the relay contacts to connect to the detection circuit, thus enabling the detection circuit to complete the detection.

[0075] Based on the above, this application further prevents the risk of safety hazards arising from the inability of relevant personnel to be informed in a timely manner after the grounding structure of the tower is accidentally damaged.

[0076] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tower foundation grounding system, comprising a grounding device for conducting electricity and a base (2) for supporting the tower, characterized in that: The grounding device includes a grounding wire (1) connecting the tower and a metal structure buried underground. The grounding wire (1) passes through the interior of the tower at least at the lower part of the tower. An intermediate transition device (3) is inserted into the base (2). The grounding wire (1) in the tower is electrically connected to the metal structure through the intermediate transition device (3).

2. The tower foundation grounding system according to claim 1, characterized in that: The intermediate transition device (3) includes a housing (31) and a grounding rod (32) vertically built into the housing (31). The housing (31) is vertically installed in the base (2). The upper end of the grounding rod (32) extends out of the housing (31) and is connected to the grounding wire (1) inside the tower. The upper part of the base (2) is open and has a channel connecting to the bottom of the housing (31). The height of the channel is not less than the height of the housing (31). The upper part of the base (2) is equipped with a cover (4) for sealing the opening. The channel is provided with a transfer mechanism (5) for supporting the housing (31). The transfer mechanism (5) includes a moving block (51) located below the housing (31) and a grounding rod (52) vertically built into the moving block (51). The upper end of the grounding rod (52) is connected to the lower end of the grounding rod (32), and the lower end is connected to a metal structure pre-buried underground.

3. A tower foundation grounding system according to claim 2, characterized in that: The transfer mechanism (5) also includes an elastic layer (53) arranged laterally in the movable block (51), the elastic layer (53) separating the movable block (51) into an upper block (511) and a lower block (512), the upper block (511) being recessed towards the middle part of the lower block (512), and the middle part of the lower block (512) having a corresponding protrusion; the second grounding rod (52) passes through the upper block (511), the elastic layer (53) and the lower block (512); the upper block (511) is fixed with a gripping handle (54) for taking out the movable block (51) on the side near the opening of the base (2).

4. A tower foundation grounding system according to claim 3, characterized in that: The transfer mechanism (5) also includes a telescopic unit (55), which includes a rotating wheel (551) and a spring (552) installed on the shaft inside the rotating wheel (551). The rotating wheel (551) is vertically installed in the channel of the base (2) and away from the opening of the base (2). The underground metal structure is connected to another grounding wire (1). The grounding wire (1) passes around the rotating wheel (551) from bottom to top and passes horizontally into the side of the lower block (512) and is connected to the lower end of the grounding rod (52). The displacement of the grounding wire (1) drives the rotating wheel (551) to rotate synchronously. The spring (552) is fixed around the shaft and one end extends out of the rotating wheel (551) and is fixed to the lower side of the grounding wire (1). The bottom of the lower block (512) near one corner of the channel has a notch with a height not less than that of the rotating wheel (551) and the notch faces the rotating wheel (551).

5. A tower foundation grounding system according to claim 4, characterized in that: It also includes a fixing mechanism (6), which includes a collar (61), a vertical rod (62) and a sleeve (63). The collar (61) is fixed to the inside of the opening of the base (2) and is located above the grounding wire (1) in the channel of the base (2). The vertical rod (62) is inserted vertically into the collar (61) and temporarily fixed. The sleeve (63) is detachably connected to the lower end of the vertical rod (62). A locking unit (64) is fixed at the lower end of the sleeve (63). A groove is provided on the base (2) below the locking unit (64) for clamping the grounding wire (1) when the locking unit (64) is lowered.

6. A tower foundation grounding system according to claim 5, characterized in that: The fixing mechanism (6) also includes a bending rod (65), one end of which is detachably connected to the upper end of the vertical rod (62), and the other end extends upward and bends; the middle part of the grip (54) is provided with a through cavity, and the bending rod (65) is used to extend into the cavity of the grip (54) and hook the grip (54).

7. A tower foundation grounding system according to claim 6, characterized in that: The fixing mechanism (6) also includes a pin (66) used as a temporary fixing housing (31). The housing (31) has a hole opened laterally on its side. The pin (66) is inserted laterally into the base (2). One end of the pin (66) extends into the hole on the side of the housing (31), and the other end extends out of the opening inside the base (2).

8. A tower foundation grounding system according to claim 7, characterized in that: It also includes a drainage mechanism (7), which includes a drainage pipe (71). The drainage pipe (71) is vertically embedded below the channel of the base (2). One end of the drainage pipe (71) is connected to the bottom of the channel of the base (2), and the other end is bent multiple times and extends downward to the drainage channel of the base (2). A float (72) is installed inside the drainage pipe (71) to prevent backflow of water. The diameter of the float (72) is at least smaller than the diameter of the drainage pipe (71), and the diameter of the opening of the drainage pipe (71) connected to the base (2) is at least smaller than the diameter of the float (72).

9. A tower foundation grounding system according to claim 8, characterized in that: It also includes an inspection mechanism (8), which is installed inside the movable block (51). The inspection mechanism (8) includes at least a detection circuit consisting of a power supply module (81), a signal transmission module (82), a controller (83), and a detection unit. The signal transmission module (82) and the detection unit are electrically connected to the controller (83). The intermediate transition device (3) also has a loop rod (33) fixed inside the housing (31). The upper end of the loop rod (33) extends out of the housing (31), bends and connects to the side of the grounding rod (32). The lower end of the loop rod (33) extends out of the housing (31) and connects to one end of the detection circuit in the moving block (51). The grounding rod (52) is electrically connected to the other end of the detection circuit to form a loop. The controller (83) is configured as follows: Obtain the real-time current value I1 detected by the detection unit; If the real-time current value I1 exceeds the preset current safety threshold I0, a warning message will be sent to the staff's mobile terminal via the signal transmission module (82).

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