A substation grounding protection device

Abstract

The present invention belongs to the technical field of grounding rod devices and discloses a substation grounding protection device. The technical key points are as follows: It includes a grounding box. A grounding rod is fixedly installed on the bottom wall of the grounding box. The top end of the grounding rod is located inside the grounding box and is fixedly connected to a conductive wire. A joint detection mechanism that cooperates with the conductive wire is arranged inside the grounding box. The joint detection mechanism includes a positioning component and an adjustment component. The positioning component is located inside the grounding box and is connected to the conductive wire. By setting the positioning component and the adjustment component to cooperate with each other, an upward pulling force can be applied to multiple groups of conductive wires, thereby checking the connection state of the joint position between the conductive wire and the grounding rod, effectively improving the inspection efficiency of the joint position between the grounding rod and the conductive wire, avoiding the situation that the conductive wire falls off the surface of the grounding rod and cannot be detected, and thus unable to provide leakage protection for the equipment. It effectively improves the inspection efficiency of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of grounding rod devices, and specifically to a substation grounding protection device. Background Technique

[0002] The grounding wire is a wire directly connected to the earth, and can also be called a safety return wire. In case of danger, it directly transfers the high voltage to the earth, which can be regarded as a lifeline. Due to poor insulation performance or a humid use environment of the box-type substation housing, its shell, transformer, and high- and low-voltage cabinet shells will be electrified. In severe cases, electric shock accidents may occur. To avoid such accidents, a wire can be connected to the metal shell, transformer, and high- and low-voltage cabinet shells of the box-type substation respectively, and the other end of the wire is connected to a grounding rod inserted into the ground. Once the electrical appliance leaks electricity, the grounding wire will carry the static electricity into the ground and release it.

[0003] When the existing grounding protection equipment is in use, generally the end of the grounding wire far from the equipment is connected to the grounding rod, and the grounding wire itself is in a loose state. The stress at the joint position of the grounding wire and the grounding rod is relatively concentrated. During long-term use, the joint between the grounding wire and the grounding rod is likely to become loose or even fall off, resulting in the inability of the grounding wire to effectively transmit electricity to the earth through the grounding rod during leakage, and thus unable to achieve the leakage protection effect. It is necessary for the staff to regularly check each grounding protection device one by one. When the number of grounding rods is large, the labor intensity of the staff is high and the inspection efficiency is low. Summary of the Invention

[0004] The purpose of the present invention is to provide a substation grounding protection device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution:

[0006] A substation grounding protection device includes a grounding box. A plurality of evenly distributed grounding rods are fixedly installed on the bottom wall of the grounding box. The bottom end of the grounding rod is provided with a conical structure and extends below the grounding box. The top end of the grounding rod is located inside the grounding box and is fixedly connected with a conductive wire. The end of the conductive wire far from the grounding rod extends outside the grounding box and is connected to an electrical device. A joint detection mechanism cooperating with the conductive wire is arranged inside the grounding box. The joint detection mechanism includes a positioning component and an adjustment component. The positioning component is located inside the grounding box and is connected to the conductive wire. The positioning component is used to support the conductive wire at the top end of the grounding rod inside the grounding box to avoid stress concentration at the joint position of the conductive wire and the grounding rod. The adjustment component is located inside the grounding box and is connected to the positioning component. The adjustment component detects the connection state of the joints between the plurality of grounding rods and the conductive wire by cooperating with the positioning component.

[0007] As a further solution of the present invention: The positioning assembly includes multiple groups of columns fixedly installed on the inner bottom wall of the grounding box and located on one side of the grounding rod. A bottom magnetic block is slidably installed on the surface of the column, and a top magnetic block that cooperates with the bottom magnetic block is slidably installed on the surface of the column. A buckle is provided on the side wall of the bottom magnetic block, and the conductive wire is fixedly connected to the side wall of the bottom magnetic block through the buckle. A pressure sensor is fixedly installed on the inner bottom wall of the grounding box, and the pressure sensor is located directly below the bottom magnetic block.

[0008] As a further solution of the present invention: The adjusting assembly includes multiple groups of control columns rotatably installed in the inner cavity of the grounding box and arranged side by side in the horizontal direction. Multiple winding rollers are fixedly installed on the surface of the control column, and the winding rollers are located above the top magnetic block. A pulling rope is wound on the surface of the winding roller, and one end of the pulling rope away from the winding roller is connected to the top magnetic block. A synchronous gear disk is fixedly installed on the surface of the control column, and multiple synchronous gear disks are jointly connected by a synchronous belt. One end of a group of control columns extends to the outside of the grounding box and is connected to a control disk, and a limiting part that cooperates with the control disk is provided on the side wall of the grounding box.

[0009] As a further solution of the present invention: The limiting part includes multiple groups of equally spaced clamping holes opened on the circumferential side wall of the control disk. An expansion slot is opened on the side wall of the grounding box outside the control disk. A sliding block is slidably installed in the expansion slot, and one side wall of the sliding block extends outside the expansion slot and is fixedly installed with a clamping rod that cooperates with the clamping hole. A compression spring is fixedly installed in the expansion slot, and the telescopic end of the compression spring is connected to the sliding block.

[0010] As a further solution of the present invention: A baffle that cooperates with the top magnetic block is fixedly installed at the top of the column.

[0011] As a further solution of the present invention: A handle is provided at a position deviating from the center of the control disk.

[0012] As a further solution of the present invention: A fixing plate is provided at the bottom end of the side wall of the grounding box, and fixing bolts are provided on the surface of the fixing plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are: By setting the positioning assembly and the adjusting assembly to cooperate with each other, an upward pulling force can be applied to multiple groups of conductive wires, thereby checking the connection state of the joint position between the conductive wire and the grounding rod, effectively improving the inspection efficiency of the joint position between the grounding rod and the conductive wire, avoiding the situation where the conductive wire falls off the surface of the grounding rod and cannot be detected, and thus unable to provide leakage protection for the equipment. It effectively improves the inspection efficiency of the staff. It solves the problem that currently the staff checks the grounding protection equipment one by one, and when the number of grounding rods is large, the labor intensity of the staff is high and the inspection efficiency is low. Description of the Drawings

[0014] Figure 1 This is a three - dimensional structure schematic diagram of a substation grounding protection device provided in an embodiment of the present invention.

[0015] Figure 2 This is a front - view structure schematic diagram of a substation grounding protection device provided in an embodiment of the present invention.

[0016] Figure 3 This is an internal structure schematic diagram of a grounding box in a substation grounding protection device provided in an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of a control column and its connection structure in a substation grounding protection device provided in an embodiment of the present invention.

[0018] Figure 5 It is Figure 1 an enlarged structure schematic diagram of A in

[0019] Figure 6 It is Figure 2 an enlarged structure schematic diagram of B in

[0020] Wherein: 1 - grounding box, 2 - grounding rod, 21 - conducting wire, 3 - joint detection mechanism, 31 - positioning component, 311 - column, 312 - bottom magnetic block, 313 - top magnetic block, 314 - pressure sensor, 32 - adjusting component, 321 - control column, 322 - winding roller, 323 - pulling rope, 324 - control panel, 325 - synchronous gear disk, 326 - synchronous belt, 4 - limiting part, 41 - clamping hole, 42 - telescopic groove, 43 - sliding block, 44 - extrusion spring, 45 - clamping rod, 5 - baffle, 6 - handle, 7 - fixing plate, 8 - fixing bolt. Specific embodiments

[0021] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0022] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0023] Such as Figure 1 、 Figure 2As shown in the figure, a structural diagram of a substation grounding protection device provided by an embodiment of the present invention includes a grounding box 1. A plurality of uniformly distributed grounding rods 2 are fixedly installed on the bottom wall of the grounding box 1. The bottom end of the grounding rod 2 is provided with a conical structure and extends below the grounding box 1. The top end of the grounding rod 2 is located inside the grounding box 1 and fixedly connected with a conductive wire 21. The end of the conductive wire 21 away from the grounding rod 2 extends outside the grounding box 1 and is connected to an electrical device. A joint detection mechanism 3 that cooperates with the conductive wire 21 is arranged inside the grounding box 1. The joint detection mechanism 3 includes a positioning component 31 and an adjustment component 32. The positioning component 31 is located inside the grounding box 1 and connected to the conductive wire 21. The positioning component 31 is used to support the conductive wire 21 at the top end of the grounding rod 2 inside the grounding box 1, thereby avoiding stress concentration at the joint position of the conductive wire 21 and the grounding rod 2. The adjustment component 32 is located inside the grounding box 1 and connected to the positioning component 31. The adjustment component 32 detects the connection state of the joints between the plurality of grounding rods 2 and the conductive wire 21 by cooperating with the positioning component 31.

[0024] During use, the grounding box 1 is installed on the ground surface. The plurality of grounding rods 2 on the bottom wall of the grounding box 1 are inserted into the deep soil layer. The bottom end of the conductive wire 21 is connected to the grounding rod 2, and the top end of the conductive wire 21 is connected to an electrical device. When the device has a leakage phenomenon, the conductive wire 21 transports the current on the device to the ground through the grounding rod 2 for release. During the use process, the positioning component 31 supports and limits the conductive wire 21 inside the grounding box 1, initially avoiding loosening at the joint position of the conductive wire 21 and the grounding rod 2, and effectively improving the stability of the joint position of the conductive wire 21 and the grounding rod 2. When it is necessary to detect the connection stability of the joint position between the grounding rod 2 and the conductive wire 21, the adjustment component 32 and the positioning component 31 cooperate with each other to apply an upward vertical pulling force to the conductive wire 21. When the joint position between the grounding rod 2 and the conductive wire 21 is firm, the adjustment component 32 will automatically release the pulling force on the conductive wire 21. When the joint position between the grounding rod 2 and the conductive wire 21 is loose or even detached, the adjustment component 32 and the positioning component 31 cooperate with each other to continuously apply a pulling force to the conductive wire 21, causing the conductive wire 21 to be completely separated from the grounding rod 2, and simultaneously emitting a warning signal for the convenience of staff to repair and replace it.

[0025] Such as Figure 2 、 Figure 4 、 Figure 6As shown, as a preferred embodiment of the present invention, the positioning component 31 includes a plurality of columns 311 fixedly installed on the inner bottom wall of the grounding box 1 and located on one side of the grounding rod 2. A bottom magnetic block 312 is slidably installed on the surface of the column 311. A top magnetic block 313 that cooperates with the bottom magnetic block 312 is slidably installed on the surface of the column 311. A buckle is provided on the side wall of the bottom magnetic block 312. The conductive wire 21 is fixedly connected to the side wall of the bottom magnetic block 312 through the buckle. A pressure sensor 314 is fixedly installed on the inner bottom wall of the grounding box 1, and the pressure sensor 314 is located directly below the bottom magnetic block 312.

[0026] The adjusting component 32 positions the top magnetic block 313 on the surface of the column 311. The top magnetic block 313 and the bottom magnetic block 312 are connected into a whole by magnetic attraction. The bottom magnetic block 312 supports and limits the conductive wire 21, and the conductive wire 21 below the bottom magnetic block 312 is in a stable state. During use, the joint position of the conductive wire 21 and the grounding rod 2 can be effectively protected. When it is necessary to detect the stability of the joint position, the adjusting component 32 pulls the top magnetic block 313 to move upward on the surface of the column 311. The top magnetic block 313 drives the bottom magnetic block 312 to move upward synchronously. When the bottom magnetic block 312 moves upward, it pulls the conductive wire 21 to move upward synchronously. When the joint position of the conductive wire 21 and the grounding rod 2 is firm, the bottom end of the conductive wire 21 is a fixed rod. The top magnetic block 313 continues to move upward. When the conductive wire 21 is straightened, the top magnetic block 313 and the bottom magnetic block 312 are separated from each other, and the bottom magnetic block 312 falls to the inner bottom wall of the grounding box 1. The pressure sensor 314 synchronously receives the pressure signal of the bottom magnetic block 312. When the joint position of the conductive wire 21 and the grounding rod 2 is loose or even detached, the top magnetic block 313 will drive the bottom magnetic block 312 to move upward continuously during the upward movement. The bottom magnetic block 312 pulls the conductive wire 21 to move upward continuously, and the conductive wire 21 is completely separated from the grounding rod 2. At this time, the pressure sensor 314 never emits a pressure signal, and the staff can repair and replace it in time.

[0027] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6As shown, as a preferred embodiment of the present invention, the adjusting assembly 32 includes a plurality of control columns 321 rotatably installed in the inner cavity of the grounding box 1 and arranged side by side in the horizontal direction. A plurality of winding rollers 322 are fixedly installed on the surface of the control column 321. The winding rollers 322 are located above the top magnetic block 313. A pulling rope 323 is wound on the surface of the winding roller 322. One end of the pulling rope 323 away from the winding roller 323 is connected to the top magnetic block 313. A synchronous gear disk 325 is fixedly installed on the surface of the control column 321. A plurality of synchronous gear disks 325 are jointly connected by a synchronous belt 326. One end of a group of control columns 321 extends to the outside of the grounding box 1 and is connected to a control disk 324. A limiting part 4 is arranged on the side wall of the grounding box 1 and is matched with the control disk 324.

[0028] When it is necessary to detect the stability of the joint position of the grounding rod 2 and the conductive wire 21, the staff holds the control disk 324 and rotates it. The control disk 324 drives a group of control columns 321 to rotate, thereby driving the synchronous gear disk 325 to rotate. The plurality of synchronous gear disks 325 cooperate with the synchronous belt 326, and can drive a plurality of control columns 321 to rotate synchronously. The control column 321 drives the winding roller 322 to rotate, and the winding roller 322 winds the pulling rope 323. During the winding process, the pulling rope 323 will pull the top magnetic block 313 to move upward on the surface of the upright column 311. After the control disk 324 rotates to a suitable position, the limiting part 4 can fix the position of the control disk 324 on the side wall of the grounding box 1.

[0029] As Figure 2 、 Figure 3 、 Figure 5 shown, as a preferred embodiment of the present invention, the limiting part 4 includes a plurality of equally spaced clamping holes 41 opened on the annular side wall of the control disk 324. A telescopic groove 42 is opened on the side wall of the grounding box 1 outside the control disk 324. A sliding block 43 is slidably installed in the telescopic groove 42. One side wall of the sliding block 43 extends outside the telescopic groove 42 and is fixedly installed with a clamping rod 45 that cooperates with the clamping hole 41. A compression spring 44 is fixedly installed in the telescopic groove 42. The telescopic end of the compression spring 44 is connected to the sliding block 43.

[0030] When it is necessary to rotate the control disk 324, pull the clamping rod 45 downward to separate the clamping rod 45 from the clamping hole 41. At this time, the control disk 324 can be conveniently pushed and rotated outside the grounding box 1. After the control disk 324 rotates to a suitable position, release the clamping rod 45. The compression spring 44 applies a thrust to the sliding block 43, and the clamping rod 45 is inserted into the clamping hole 41 on the surface of the control disk 324 again. The clamping rod 45 cooperates with the clamping hole 41, and the position of the control disk 324 can be fixed on the side wall of the grounding box 1.

[0031] AsFigure 4 , Figure 6 As shown in Figure 6 , as a preferred embodiment of the present invention, a baffle 5 that cooperates with the top magnetic block 313 is fixedly installed at the top of the column 311.

[0032] As Figure 2 , Figure 3 As shown in Figure 3 , as a preferred embodiment of the present invention, a handle 6 is provided at a position on the surface of the control disk 324 that deviates from the center of the circle.

[0033] As Figure 1 , Figure 2 As shown in Figure 2 , as a preferred embodiment of the present invention, a fixing plate 7 is provided at the bottom end of the side wall of the grounding box 1, and fixing bolts 8 are provided on the surface of the fixing plate 7.

[0034] The working principle of the present invention is as follows: When in use, the grounding box 1 is installed on the ground surface. Multiple grounding rods 2 at the bottom wall of the grounding box 1 are inserted into the deep soil layer. The bottom end of the conducting wire 21 is connected to the grounding rod 2, and the top end of the conducting wire 21 is connected to the electrical equipment. When the equipment has a leakage phenomenon, the conducting wire 21 transports the current on the equipment to the ground through the grounding rod 2 for release.

[0035] During use, the top magnetic block 313 is connected to the bottom magnetic block 312 as a whole through magnetic attraction. The bottom magnetic block 312 supports and positions the conductive wire 21, and the conductive wire 21 below the bottom magnetic block 312 is in a stable state. During use, the joint position between the conductive wire 21 and the grounding rod 2 can be effectively protected. When it is necessary to detect the stability of the joint position, the staff holds the control panel 324 and rotates it. The control panel 324 drives a set of control columns 321 to rotate, and then drives the synchronous gear disk 325 to rotate. Multiple sets of synchronous gear disks 325 cooperate with the synchronous belt 326 to drive multiple sets of control columns 321 to rotate synchronously. The control columns 321 drive the winding roller 322 to rotate, and the winding roller 322 winds up the pulling rope 323. During the winding process, the pulling rope 323 will pull the top magnetic block 313 to move upward on the surface of the column 311. The top magnetic block 313 drives the bottom magnetic block 312 to move upward synchronously. When the bottom magnetic block 312 moves upward, it pulls the conductive wire 21 to move upward synchronously. When the joint position between the conductive wire 21 and the grounding rod 2 is firm, the bottom end of the conductive wire 21 is a fixed rod. The top magnetic block 313 continues to move upward. When the conductive wire 21 is straightened, the top magnetic block 313 and the bottom magnetic block 312 are separated from each other, and the bottom magnetic block 312 falls to the inner bottom wall of the grounding box 1. The pressure sensor 314 synchronously receives the pressure signal of the bottom magnetic block 312. When the joint position between the conductive wire 21 and the grounding rod 2 is loose or even detached, the top magnetic block 313 will drive the bottom magnetic block 312 to move upward continuously synchronously during the upward movement. The bottom magnetic block 312 pulls the conductive wire 21 to move upward continuously, and the conductive wire 21 is completely separated from the grounding rod 2. At this time, the pressure sensor 314 never emits a pressure signal, and the staff can repair and replace it in time.

[0036] The above has described the preferred embodiments of the present invention in detail, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A substation grounding protection device, comprising a grounding box, wherein a plurality of groups of uniformly distributed grounding rods are fixedly installed on the bottom wall of the grounding box, the bottom end of the grounding rod is provided with a conical structure and extends below the grounding box, the top end of the grounding rod is located inside the grounding box and is fixedly connected with a conducting wire, and one end of the conducting wire far away from the grounding rod extends outside the grounding box and is connected with an electrical equipment, and is characterized in that, The inner cavity of the grounding box is provided with a joint detection mechanism that cooperates with the conductive wire. The joint detection mechanism includes a positioning component and an adjustment component; The positioning component is located in the inner cavity of the grounding box and is connected to the conductive wire. The positioning component is used to support the conductive wire at the top of the grounding rod in the inner cavity of the grounding box to avoid stress concentration at the joint position between the conductive wire and the grounding rod. The positioning component includes multiple groups of columns fixed to the inner bottom wall of the grounding box and located on one side of the grounding rod. A bottom magnetic block is slidably installed on the surface of the column, and a top magnetic block that cooperates with the bottom magnetic block is slidably installed on the surface of the column. A buckle is provided on the side wall of the bottom magnetic block, and the conductive wire is fixedly connected to the side wall of the bottom magnetic block through the buckle. A pressure sensor is fixedly installed on the inner bottom wall of the grounding box, and the pressure sensor is located directly below the bottom magnetic block; The adjustment component is located in the inner cavity of the grounding box and is connected to the positioning component. The adjustment component detects the connection state of the joints between multiple groups of grounding rods and the conductive wire by cooperating with the positioning component. The adjustment component includes multiple groups of control columns rotatably installed in the inner cavity of the grounding box and arranged side by side in the horizontal direction. Multiple winding rollers are fixedly installed on the surface of the control column, and the winding rollers are located above the top magnetic block. A pulling rope is wound on the surface of the winding roller, and one end of the pulling rope away from the winding roller is connected to the top magnetic block. A synchronous gear disk is fixedly installed on the surface of the control column, and multiple synchronous gear disks are jointly connected by a synchronous belt. One end of a group of control columns extends to the outside of the grounding box and is connected to a control disk, and a limiting part that cooperates with the control disk is provided on the side wall of the grounding box.

2. The grounding protection device for a substation according to claim 1, wherein, The limiting part includes multiple groups of equally spaced clamping holes opened on the circumferential side wall of the control disk. An expansion slot is opened on the side wall of the grounding box outside the control disk. A sliding block is slidably installed in the expansion slot. One side wall of the sliding block extends outside the expansion slot and is fixedly installed with a clamping rod that cooperates with the clamping hole. A compression spring is fixedly installed in the expansion slot, and the telescopic end of the compression spring is connected to the sliding block.

3. The grounding protection device for a substation according to claim 1, characterized in that, A baffle that cooperates with the top magnetic block is fixedly installed at the top of the column.

4. A substation grounding protection device according to claim 1, characterized in that, A handle is provided at a position deviating from the center of the control disk.

5. A substation grounding protection device according to claim 1, characterized in that, A fixing plate is provided at the bottom end of the side wall of the grounding box, and fixing bolts are provided on the surface of the fixing plate.

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