Grounding protection device for transformer substation

Abstract

The invention belongs to the technical field of grounding rod equipment, and discloses a transformer substation grounding protection device which is technically characterized by comprising a grounding box, a grounding rod is fixedly installed on the bottom wall of the grounding box, and the top end of the grounding rod is located in an inner cavity of the grounding box and fixedly connected with a conductive wire. The inner cavity of the grounding box is provided with a joint detection mechanism matched with the conductive wires, the joint detection mechanism comprises a positioning assembly and an adjusting assembly, the positioning assembly is located in the inner cavity of the grounding box and connected with the conductive wires, and the positioning assembly and the adjusting assembly are matched with each other, so that upward pulling force can be applied to the multiple groups of conductive wires; the detection efficiency of the joint position between the grounding rod and the conductive wire is effectively improved, and the situation that the conductive wire falls off from the surface of the grounding rod and cannot be found, and consequently leakage protection cannot be carried out on equipment is avoided. And the inspection efficiency of workers is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of grounding rod equipment, in particular to a grounding protection device for a transformer substation. Background Art

[0002] The grounding wire is a wire directly connected to the earth, which can also be called a safety return line. When in danger, it transfers high voltage directly to the earth, which is considered a lifeline. Due to poor insulation performance or humid operating environment, the outer shell, transformer, and high and low voltage cabinet shell of the box-type substation will be charged, and electric shock accidents may occur in serious cases. In order to avoid accidents, a wire can be connected to the metal shell, transformer, and high and low voltage cabinet shell of the box-type substation, and the other end of the wire can be connected to the grounding rod inserted into the earth. Once the electrical appliance leaks electricity, the grounding wire will bring static electricity to the earth and release it.

[0003] When using existing grounding protection equipment, the end of the grounding wire away from the equipment is generally connected to the grounding rod. The grounding wire itself is in a loose state, and the stress at the joint between 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 easy to loosen or even fall off, resulting in the grounding wire being unable to effectively transmit electricity to the earth through the grounding rod when leakage occurs, and unable to play a leakage protection effect. The staff is required to regularly check the grounding protection equipment 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 object of the present invention is to provide a substation grounding protection device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A substation grounding protection device comprises a grounding box, wherein a plurality of groups of evenly distributed grounding rods are fixedly installed on the bottom wall of the grounding box, the bottom ends of the grounding rods are arranged in a conical structure and extend to the bottom of the grounding box, the top ends of the grounding rods are arranged in an inner cavity of the grounding box and are fixedly connected with a conductive wire, the end of the conductive wire away from the grounding rods extends to the outside of the grounding box and is connected to an electric power device, the inner cavity of the grounding box is provided with a joint detection mechanism cooperating with the conductive wire, the joint detection mechanism comprises a positioning component and an adjustment component, the positioning component is arranged 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 end of the grounding rod in the inner cavity of the grounding box so as to avoid stress concentration at the joint position between the conductive wire and the grounding rod, the adjustment component is arranged in the inner cavity of the grounding box and is connected to the positioning component, and the adjustment component detects the connection status of the joint positions of the plurality of groups of grounding rods and the conductive wires by cooperating with the positioning component.

[0006] As a further solution of the present invention: the positioning assembly includes multiple groups of columns fixedly installed on the 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, a top magnetic block that cooperates with the bottom magnetic block is slidably installed on the surface of the column, the side wall of the bottom magnetic block is provided with a buckle, 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 bottom wall of the grounding box, and the pressure sensor is located directly below the bottom magnetic block.

[0007] As a further solution of the present invention: the adjustment component includes multiple groups of control columns rotatably installed in the inner cavity of the grounding box and distributed in parallel in the horizontal direction, multiple groups of winding rollers are fixedly installed on the surface of the control columns, the winding rollers are located above the top magnetic block, and a pulling rope is wound on the surface of the winding roller, and the 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 groups of synchronous gear disks are commonly connected to a synchronous belt, one end of a group of control columns extends to the outside of the grounding box and is connected to the control disk, and the side wall of the grounding box is provided with a limiting portion that cooperates with the control disk.

[0008] As a further solution of the present invention: the limiting portion includes a plurality of groups of equally spaced snap-in holes opened on the annular side wall of the control panel, the side wall of the grounding box is provided with a telescopic groove located on the outside of the control panel, a sliding block is slidably installed in the telescopic groove, one side wall of the sliding block extends outside the telescopic groove and is fixedly installed with a snap-in rod that cooperates with the snap-in holes, an extrusion spring is fixedly installed in the telescopic groove, and the telescopic end of the extrusion spring is connected to the sliding block.

[0009] As a further solution of the present invention: a baffle which cooperates with the top magnetic block is fixedly installed on the top of the column.

[0010] As a further solution of the present invention: a handle is provided on the surface of the control panel at a position deviating from the center of the circle.

[0011] As a further solution of the present invention: a fixing plate is arranged at the bottom end of the side wall of the grounding box, and fixing bolts are arranged on the surface of the fixing plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 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 status 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, and preventing the conductive wire from falling off the surface of the grounding rod and not being discovered, thereby failing to protect the equipment from leakage. Effectively improve the inspection efficiency of the staff. This solves the problem that the staff currently 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a substation grounding protection device provided in an embodiment of the present invention.

[0014] Figure 2 The present invention is a schematic diagram of the main structure of a substation grounding protection device provided in an embodiment of the present invention.

[0015] Figure 3 The present invention is a schematic diagram of the internal structure of a grounding box in a grounding protection device for a substation provided in an embodiment of the present invention.

[0016] Figure 4 The present invention provides a schematic diagram of a control column and its connection structure in a substation grounding protection device.

[0017] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of A.

[0018] Figure 6 for Figure 2 Schematic diagram of the enlarged structure of B.

[0019] Wherein: 1- grounding box, 2- grounding rod, 21- conductive wire, 3- joint detection mechanism, 31- positioning assembly, 311- column, 312- bottom magnetic block, 313- top magnetic block, 314- pressure sensor, 32- adjustment assembly, 321- control column, 322- winding roller, 323- pulling rope, 324- control disk, 325- synchronous gear disk, 326- synchronous belt, 4- limiting part, 41- clamping hole, 42- telescopic slot, 43- sliding block, 44- extrusion spring, 45- clamping rod, 5- baffle, 6- handle, 7- fixing plate, 8- fixing bolt. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0021] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] like Figure 1 , Figure 2As shown, it is a structural diagram of a substation grounding protection device provided by an embodiment of the present invention, comprising a grounding box 1, wherein a plurality of groups of evenly distributed grounding rods 2 are fixedly installed on the bottom wall of the grounding box 1, wherein the bottom ends of the grounding rods 2 are arranged in a conical structure and extend to the bottom of the grounding box 1, wherein the top ends of the grounding rods 2 are arranged in the inner cavity of the grounding box 1 and are fixedly connected with a conductive wire 21, wherein one end of the conductive wire 21 away from the grounding rod 2 extends to the outside of the grounding box 1 and is connected to the power equipment, and a joint detection mechanism 3 cooperating with the conductive wire 21 is arranged in the inner cavity of the grounding box 1, The joint detection mechanism 3 includes a positioning component 31 and an adjusting component 32. The positioning component 31 is located in the inner cavity of the grounding box 1 and is connected to the conductive wire 21. The positioning component 31 is used to support the conductive wire 21 at the top of the grounding rod 2 in the inner cavity of the grounding box 1 to avoid stress concentration at the joint position between the conductive wire 21 and the grounding rod 2. The adjusting component 32 is located in the inner cavity of the grounding box 1 and is connected to the positioning component 31. The adjusting component 32 detects the connection status of the joint positions of multiple groups of grounding rods 2 and the conductive wire 21 by cooperating with the positioning component 31.

[0023] When in use, the grounding box 1 is installed on the ground surface, and the multiple groups 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 the electrical equipment. When the equipment has leakage, the conductive wire 21 transmits the current on the equipment to the ground through the grounding rod 2 for release. During use, the positioning component 31 supports and limits the conductive wire 21 in the inner cavity of the grounding box 1, preliminarily avoiding the loosening of 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 ground rod 2 and the conductive wire 21, the adjusting component 32 cooperates with the positioning component 31 to apply a vertical upward pulling force to the conductive wire 21. When the joint position between the ground rod 2 and the conductive wire 21 is firm, the adjusting component 32 will automatically release the pulling force on the conductive wire 21. When the joint position between the ground rod 2 and the conductive wire 21 becomes loose or even falls off, the adjusting component 32 cooperates with the positioning component 31 to continuously apply pulling force to the conductive wire 21, so that the conductive wire 21 is completely separated from the ground rod 2, and a warning signal is simultaneously issued to facilitate the staff to repair and replace it.

[0024] like Figure 2 , Figure 4 , Figure 6As shown, as a preferred embodiment of the present invention, the positioning assembly 31 includes a plurality of groups 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 cooperating 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.

[0025] The adjusting component 32 positions the top magnetic block 313 on the surface of the column 311. 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 limits the conductive wire 21. The conductive wire 21 under 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 adjustment component 32 pulls the top magnetic block 313 to move upward on the surface of the column 311, and 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 fixed, and 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 bottom wall of the grounding box 1, and the pressure sensor 314 synchronously receives the pressure signal of the bottom magnetic block 312. When the joint between the conductive wire 21 and the grounding rod 2 becomes loose or even falls off, the top magnetic block 313 will drive the bottom magnetic block 312 to move upward 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 does not send a pressure signal at all, and the staff can repair and replace it in time.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, as a preferred embodiment of the present invention, the adjustment component 32 includes a plurality of control columns 321 rotatably installed in the inner cavity of the grounding box 1 and distributed in parallel 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, and the pulling rope 323 is connected to the top magnetic block 313 at one end away from the winding roller 323, a synchronous gear disk 325 is fixedly installed on the surface of the control column 321, and a plurality of synchronous gear disks 325 are commonly connected to 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, and a side wall of the grounding box 1 is provided with a limiting portion 4 that cooperates with the control disk 324.

[0027] When the stability of the joint position of the grounding rod 2 and the conductive wire 21 needs to be tested, the staff member holds the control disk 324 and rotates it. The control disk 324 drives a group of control columns 321 to rotate and then drives the synchronous gear plate 325 to rotate. Multiple groups of synchronous gear plates 325 cooperate with the synchronous belt 326 to drive multiple groups 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 pulls the top magnetic block 313 to move upward on the surface of the column 311. After the control disk 324 rotates to a suitable position, the limit part 4 can fix the position of the control disk 324 at the side wall of the grounding box 1.

[0028] like Figure 2 , Figure 3 , Figure 5 As shown, as a preferred embodiment of the present invention, the limiting portion 4 includes a plurality of groups of equally spaced snap-in holes 41 opened on the annular side wall of the control disk 324, and the side wall of the grounding box 1 is provided with a telescopic groove 42 located on the outside of the control disk 324, and a sliding block 43 is slidably installed in the telescopic groove 42, and a side wall of the sliding block 43 extends to the outside of the telescopic groove 42 and is fixedly installed with a snap-in rod 45 that cooperates with the snap-in hole 41, and an extrusion spring 44 is fixedly installed in the telescopic groove 42, and the telescopic end of the extrusion spring 44 is connected to the sliding block 43.

[0029] When the control disk 324 needs to be rotated, the clamping rod 45 is pulled downward to separate the clamping rod 45 from the clamping hole 41. At this time, the control disk 324 can be easily pushed to rotate from the outside of the grounding box 1. After the control disk 324 is rotated to a suitable position, the clamping rod 45 is released, and the squeezing spring 44 applies a thrust to the sliding block 43. The clamping rod 45 is inserted into the clamping hole 41 on the surface of the control disk 324 again. The clamping rod 45 and the clamping hole 41 cooperate with each other, and the position of the control disk 324 can be fixed at the side wall of the grounding box 1.

[0030] like Figure 4 , Figure 6 As shown, as a preferred embodiment of the present invention, a baffle 5 that cooperates with the top magnetic block 313 is fixedly installed on the top of the column 311.

[0031] like Figure 2 , Figure 3 As shown, as a preferred embodiment of the present invention, a handle 6 is provided on the surface of the control disk 324 at a position deviating from the center of the circle.

[0032] like Figure 1 , Figure 2 As shown, 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 .

[0033] The working principle of the present invention is: when in use, the grounding box 1 is installed on the ground surface, the multiple groups 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 the electrical equipment. When the equipment has leakage, the conductive wire 21 transmits the current on the equipment to the ground through the grounding rod 2 for release.

[0034] During use, the top magnetic block 313 is connected to the bottom magnetic block 312 as a whole through magnetic attraction, and the bottom magnetic block 312 supports and limits the conductive wire 21. 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 staff holds the control disk 324 and rotates it. The control disk 324 drives a group of control columns 321 to rotate and then drives the synchronous gear plate 325 to rotate. Multiple groups of synchronous gear plates 325 cooperate with the synchronous belt 326 to drive multiple groups of control columns 321 to rotate synchronously. The control column 321 drives the winding roller 322 to rotate, and the winding roller 322 winds up the traction rope 323. During the winding process, the traction 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, and the bottom magnetic block 312 pulls the conductive wire 21 to move upward synchronously when moving upward. 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 fixed, and 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 bottom wall of the grounding box 1, and the pressure sensor 314 receives the pressure signal of the bottom magnetic block 312 synchronously. When the joint position of the conductive wire 21 and the grounding rod 2 is loose or even falls off, the top magnetic block 313 will drive the bottom magnetic block 312 to move upward synchronously during the upward movement, and 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 does not send a pressure signal at all times, and the staff can repair and replace it in time.

[0035] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A substation grounding protection device, comprising a grounding box, wherein a plurality of evenly distributed grounding rods are fixedly installed on the bottom wall of the grounding box, wherein the bottom ends of the grounding rods are arranged in a conical structure and extend to the bottom of the grounding box, wherein the top ends of the grounding rods are located in the inner cavity of the grounding box and are fixedly connected with conductive wires, wherein one end of the conductive wires away from the grounding rods extends to the outside of the grounding box and is connected to the power equipment, wherein: The inner cavity of the grounding box is provided with a joint detection mechanism that cooperates with the conductive wire, and the joint detection mechanism includes a positioning component and an adjustment component; The positioning assembly is located in the inner cavity of the grounding box and is connected to the conductive wire. The positioning assembly 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 between the conductive wire and the grounding rod. The adjusting component is located in the inner cavity of the grounding box and is connected to the positioning component. The adjusting component detects the connection status of multiple groups of grounding rods and the conductive wire joint positions by cooperating with the positioning component.

2. A substation grounding protection device according to claim 1, characterized in that: The positioning assembly includes multiple groups of columns fixedly installed on the 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, 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, 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 bottom wall of the grounding box, and the pressure sensor is located directly below the bottom magnetic block.

3. A substation grounding protection device according to claim 2, characterized in that: The adjustment component includes multiple groups of control columns rotatably installed in the inner cavity of the grounding box and distributed in parallel in the horizontal direction, multiple groups of winding rollers are fixedly installed on the surface of the control columns, the winding rollers are located above the top magnetic block, and a pulling rope is wound on the surface of the winding roller, and the 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 groups of synchronous gear disks are commonly connected to a synchronous belt, one end of a group of control columns extends to the outside of the grounding box and is connected to the control disk, and the side wall of the grounding box is provided with a limiting portion that cooperates with the control disk.

4. A substation grounding protection device according to claim 3, characterized in that: The limiting portion includes a plurality of groups of equally spaced snap-in holes opened on the annular side wall of the control panel, a telescopic groove located outside the control panel is opened on the side wall of the grounding box, a sliding block is slidably installed in the telescopic groove, a side wall of the sliding block extends outside the telescopic groove and is fixedly installed with a snap-in rod that cooperates with the snap-in holes, an extrusion spring is fixedly installed in the telescopic groove, and the telescopic end of the extrusion spring is connected to the sliding block.

5. A substation grounding protection device according to claim 2, characterized in that: A baffle plate cooperating with the top magnetic block is fixedly mounted on the top of the column.

6. A substation grounding protection device according to claim 3, characterized in that: A handle is provided on the surface of the control panel at a position deviating from the center of the circle.

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

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