Resistance reducing device of grounding resistor

Abstract

The utility model provides a resistance reducing device for a grounding resistor. The resistance reducing device comprises a connecting frame, a resistance reducing mechanism and a grounding assembly, the resistance reducing mechanism is arranged on the connecting frame, and the resistance reducing mechanism is arranged in the first direction of the connecting frame. An electrode needle is arranged on the connecting frame in a manner of extending towards a second direction; the connecting frame extends towards a second direction and is further provided with a supporting column, one end, away from the connecting frame, of the supporting column is provided with a grounding assembly, and the second direction is perpendicular to the first direction. When the resistance reducing device is used, the supporting columns on the connecting frame are placed downwards into a soil pit dug in advance, so that the grounding assembly is in close contact with soil, the electrode needles are inserted into the soil, when current passes through the resistance reducing device, discharge corona can be conducted to the grounding assembly, and through the arrangement of the structure, the grounding resistance value can be effectively reduced; meanwhile, the contact area with the ground (soil) is increased, and the grounding resistance value can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to power grounding technical field, especially relate to a resistance reducing device of grounding resistance. BACKGROUND

[0002] Grounding resistance refers to the resistance encountered by current flowing from grounding body into the earth, which is directly related to the safety and stable operation of electrical system. Reducing grounding resistance can improve the lightning protection capability and anti-interference capability of electrical system, reduce power loss and ensure the normal operation of power system.

[0003] Traditional methods of reducing grounding resistance include increasing the area of ground net, increasing the size of grounding body, increasing the deep burial of grounding body, introducing external grounding, using natural grounding body, changing soil, using resistance reducing agent, etc. However, these methods can reduce grounding resistance to some extent, but have the problems of complex structure, complex process, low reliability and high cost. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a resistance reducing device of grounding resistance aiming at the above technical problems.

[0005] A resistance reducing device of grounding resistance, comprising: a connecting frame, a resistance reducing mechanism and a grounding assembly;

[0006] The resistance reducing mechanism is arranged on the connecting frame, and the resistance reducing mechanism is arranged along a first direction on the connecting frame;

[0007] The connecting frame extends towards a second direction and is provided with an electrode needle;

[0008] The connecting frame extending towards the second direction is further provided with a support column, and the grounding assembly is arranged at the end of the support column away from the connecting frame, wherein the second direction is perpendicular to the first direction.

[0009] In one embodiment, the device further comprises a plurality of conductive connecting pieces, each of which is arranged along the first direction and connected to the connecting frame, and each of the conductive connecting pieces is provided with a resistance reducing mechanism.

[0010] In one embodiment, the conductive connecting piece is a flat steel strip.

[0011] In one embodiment, the electrode needle is arranged at a position close to the middle of the connecting frame, and the number of support columns is plural, and each of the support columns is arranged at a position close to the edge of the connecting frame.

[0012] In one embodiment, the grounding assembly comprises a conductive concrete block, and the middle of the conductive concrete block is connected to the support column.

[0013] In one of the embodiments, the conductive concrete block is provided with a plurality of grounding holes on one side of the connecting frame, and a needle-shaped grounding electrode is inserted into each of the grounding holes.

[0014] In one of the embodiments, the width of the conductive concrete block gradually decreases from the end close to the connecting frame to the end away from the connecting frame.

[0015] In one of the embodiments, the conductive concrete block is provided in a semi-spherical shape, the side of the conductive concrete block facing the connecting frame is a flat surface, and the flat surface is circular in shape, and the side of the conductive concrete block away from the connecting frame is a semi-spherical surface.

[0016] In one of the embodiments, the resistance reduction mechanism includes a graphite block and a metal support grid wrapped in the graphite block, and the metal support grid is connected to the conductive connecting piece.

[0017] In one of the embodiments, the end of each conductive connecting piece is provided with a connecting assembly, the connecting assembly includes a sleeve, a knob and a support block, the sleeve is sleeved on the end of the conductive connecting piece, the support block is arranged on the outside of the sleeve, and the two ends of the support block are connected with the outer surface of the sleeve, the middle part of the support block is spaced apart from the outer surface of the sleeve to form a plug-in channel, the middle part of the support block is provided with a threaded hole, the knob is threadedly connected with the side wall of the threaded hole, and the knob rotates along the side wall of the threaded hole to approach the outer surface of the sleeve.

[0018] The resistance reduction device of the grounding resistance, in use, first places the support column on the connecting frame downward into the pre-dug soil pit, so that the grounding assembly is in close contact with the soil, and the electrode needle is inserted into the soil, when current passes through the resistance reduction device, the discharge corona can be conducted to the grounding assembly, through the above structure, the grounding resistance value can be effectively reduced, and the area of contact with the ground (soil) is increased, which can effectively reduce the grounding resistance value. The resistance reduction device reduces resistance through simple results, effectively improves reliability, and reduces use cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the resistance reduction device of the grounding resistance in one embodiment;

[0020] Figure 2 It is a partial structural schematic view of the resistance reduction device of the grounding resistance in one embodiment;

[0021] Figure 3 It is another partial structural schematic view of the resistance reduction device of the grounding resistance in one embodiment;

[0022] Figure 4 Part structure diagram and partial enlarged diagram of resistance reduction device of grounding resistance in one embodiment.

[0023] In the figure, the reference signs are as follows: 1, connecting frame; 2, conductive connecting piece; 3, resistance reduction mechanism; 301, graphite block; 302, metal support grid; 4, support column; 5, grounding assembly; 501, conductive concrete block; 502, needle-shaped grounding electrode; 6, connecting part; 7, connecting assembly; 701, sleeve; 702, knob; 703, support block; 8, electrode needle. DETAILED DESCRIPTION

[0024] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0025] In one embodiment, as shown in Figures 1 to 3 A resistance reduction device of grounding resistance is provided, which comprises a connecting frame 1, a resistance reduction mechanism 3 and a grounding assembly 5; the resistance reduction mechanism 3 is arranged on the connecting frame 1, and the resistance reduction mechanism 3 is arranged along a first direction on the connecting frame 1; the connecting frame 1 extends in a second direction and is provided with an electrode needle 8; the connecting frame 1 extends in the second direction and is further provided with a support column 4, and the grounding assembly 5 is arranged at an end of the support column 4 away from the connecting frame 1, wherein the second direction is perpendicular to the first direction.

[0026] In the embodiment, the connecting frame 1 is a metal connecting frame 1 and has conductive properties. The connecting frame 1 comprises a plurality of first cross frames and a plurality of second cross frames, each first cross frame and each second cross frame are arranged along a first direction, for example, the first direction is a horizontal direction. Both ends of each first cross frame are connected with two second cross frames, so that the first cross frame and the second cross frame are connected to form a net-shaped connecting frame 1, and the net-shaped connecting frame 1 increases the contact area with the ground, thereby effectively reducing the grounding resistance value.

[0027] The second direction is a direction perpendicular to the horizontal direction, and in this embodiment, the second direction is a vertical direction. The support column 4 is connected to the lower surface of the connecting frame 1 and is arranged to extend downward, so that the grounding assembly 5 is located below the connecting frame 1. When the grounding assembly 5 is buried in the soil, not only can it achieve conduction, but also can fix and stabilize the connecting frame 1. By arranging the grounding assembly 5, the effect of reducing the impact of the grounding resistance value can be achieved. In this embodiment, the support column 4 is a metal support column 4, which has a conductive property. The electrode needle 8 is connected to the lower side of the connecting frame 1, and the electrode needle 8 is arranged in the vertical direction. The electrode needle 8 is inserted into the soil to conduct current to the ground. In this embodiment, the number of resistance reduction mechanisms 3 is multiple, and each resistance reduction mechanism 3 is at the same horizontal height as the connecting frame 1.

[0028] In the above embodiment, in use, first, the support column 4 on the connecting frame 1 is placed downward into the pre-dug soil pit, so that the grounding assembly 5 is in close contact with the soil, and the electrode needle 8 is inserted into the soil. When current passes through the resistance reduction device, the discharge corona can be conducted to the grounding assembly 5. Through the arrangement of the above structure, the grounding resistance value can be effectively reduced, and the area of contact with the ground (soil) is increased, which can effectively reduce the grounding resistance value. The resistance reduction device achieves resistance reduction through simple results, effectively improves reliability, and reduces use cost.

[0029] In order to realize the connection between the resistance reduction mechanism 3 and the connecting frame 1, in one embodiment, as shown in Figure 1 , it also includes a plurality of conductive connecting pieces 2, each of which is arranged in the first direction and connected to the connecting frame 1. Each of the conductive connecting pieces 2 is provided with a resistance reduction mechanism 3.

[0030] In this embodiment, the number of conductive connecting pieces 2 is multiple, and the two ends of each conductive connecting piece 2 are respectively connected to the connecting frame 1. For example, connection holes are formed on the connecting frame 1, such as two adjacent second cross frames each having a connection hole. One end of the conductive connecting piece 2 passes through the connection hole of one second cross frame, and the other end of the conductive connecting piece 2 passes through the connection hole of another second cross frame. In this way, the connection between the conductive connecting piece 2 and the second cross frame is realized, and the resistance reduction mechanism 3 can be arranged on the conductive connecting piece 2 to support and electrically connect the resistance reduction mechanism 3. Moreover, by arranging the conductive connecting piece 2, multiple resistance reduction mechanisms 3 can be arranged. In the following embodiments, the part of the conductive connecting piece 2 protruding to the outside of the second cross frame can also be connected to the connecting assembly 7.

[0031] In order to better support the resistance reduction mechanism 3 and realize conductivity, in one embodiment, the conductive connecting piece 2 is a flat steel strip. In this embodiment, the flat steel strip has high strength and hardness, which can well support the conductive connecting piece 2. Moreover, the flat steel strip has good conductive properties and can achieve good electrical conduction.

[0032] In order to make the installation of the resistance reduction device more stable, in an embodiment, the electrode needle 8 is arranged at a position close to the middle of the connecting frame 1, and the number of the support columns 4 is multiple, and each of the support columns 4 is arranged at a position close to the edge of the connecting frame 1.

[0033] In an embodiment, as shown in Figure 3 , the grounding assembly 5 comprises a conductive concrete block 501, and the middle of the conductive concrete block 501 is connected with the support column 4. In this embodiment, the conductive concrete block 501 has the conductive property and the good corrosion resistance, and can remain uncorroded in the soil for a long time, which is conducive to improving the reliability of the resistance reduction device. In addition, the conductive concrete block 501 has a large density and a large weight, and can be stably installed in the soil and not easily displaced, so as to better support the support frame above and improve the reliability of the resistance reduction device.

[0034] In an embodiment, referring again to Figure 3 , one side of the conductive concrete block is provided with a plurality of grounding holes, and each of the grounding holes is inserted with a needle-shaped grounding electrode 502. In this embodiment, when the current passes through the resistance reduction device, the discharge corona can continuously spread from the needle tip of the needle-shaped grounding electrode 502 to the conductive concrete block 501, so as to achieve the reduction of the impulse grounding resistance value.

[0035] In an embodiment, as shown in Figure 3 , the width of the conductive concrete block 501 gradually decreases from the end close to the connecting frame 1 to the end away from the connecting frame 1. In this embodiment, the width of the conductive concrete block 501 gradually decreases from top to bottom, which is conducive to the stable installation of the conductive concrete block 501 in the soil and improves the reliability and stability of the device.

[0036] In an embodiment, as shown in Figure 3 , the conductive concrete block is arranged in a hemispherical shape, one side of the conductive concrete block facing the connecting frame 1 is a plane, and the shape of the plane is circular, and the other side of the conductive concrete block away from the connecting frame 1 is a hemispherical surface. By arranging the conductive concrete block in a hemispherical shape, the situation of sharp-end discharge can be effectively alleviated, so as to make the grounding more safe.

[0037] In order to achieve resistance reduction, in an embodiment, as shown in Figure 2 , the resistance reduction mechanism 3 comprises a graphite block 301 and a metal support grid 302 wrapped in the graphite block 301, and the metal support grid 302 is connected with the conductive connecting piece 2.

[0038] In the embodiment, the metal supporting grid 302 is used to connect the conductive connecting member 2, and the graphite block 301 is formed by adhering graphite powder with an adhesive, so that the graphite block 301 can have a stable block structure. In addition, a small amount of metal oxide is mixed in the graphite powder of the graphite block 301, so that the graphite block 301 has better electrical conductivity.

[0039] In order to enable the electrical system to connect the resistance reduction device, in one embodiment, as shown in Figure 4 , the end of each conductive connecting member 2 is provided with a connecting assembly 7, the connecting assembly 7 includes a sleeve 701, a knob 702 and a supporting block 703, the sleeve 701 is sleeved on the end of the conductive connecting member 2, the supporting block 703 is arranged on the outside of the sleeve 701, and the two ends of the supporting block 703 are connected with the outer side surface of the sleeve 701, the middle part of the supporting block 703 is arranged in a spaced manner between the outer side surface of the sleeve 701, a threaded hole is formed in the middle part of the supporting block 703, the knob 702 is threadedly connected with the side wall of the threaded hole, and the knob 702 is rotated along the side wall of the threaded hole to approach the outer side surface of the sleeve 701.

[0040] In the embodiment, please refer to Figure 1 , the end of the conductive connecting member 2 protrudes to the outside of the connecting hole of the second cross frame to form a connecting part 6, and the sleeve 701 is sleeved on the connecting part 6. The sleeve 701 is a metal sleeve 701 and has electrical conductivity, so that the electrical system can be connected to the resistance reduction device through an electric wire. Specifically, the knob 702 is loosened along the surface away from the sleeve 701, the grounding wire of the electrical system is inserted into the insertion channel, then the knob 702 is tightened, so that the knob 702 is pressed on the grounding wire, so that the grounding wire is in close and stable contact with the outer side surface of the sleeve 701, and the grounding wire is electrically connected to the connecting member through the sleeve 701. The knob 702 can realize quick installation and disassembly of the resistance reduction device.

[0041] The technical features of the above embodiments can be combined in any way. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0042] The above embodiments only express several implementation manners of the application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which are all within the protection scope of the application. Therefore, the protection scope of the patent of the application should be subject to the appended claims.

Claims

1. A grounding resistance reduction device, characterized in that, Includes a connecting frame, a resistance reduction mechanism, and a grounding assembly; The drag reduction mechanism is disposed on the connecting frame, and the drag reduction mechanism is disposed along a first direction on the connecting frame; The connecting frame is provided with electrode needles extending in the second direction; The connecting frame extends in a second direction and is also provided with a support column. A grounding component is provided at the end of the support column away from the connecting frame, wherein the second direction is perpendicular to the first direction.

2. The grounding resistance reduction device according to claim 1, characterized in that, It also includes a plurality of conductive connectors, each of which is arranged along the first direction and connected to the connecting frame, and each of the conductive connectors is provided with a resistance reduction mechanism.

3. The grounding resistance reduction device according to claim 2, characterized in that, The conductive connector is a flat steel strip.

4. The grounding resistance reducing device according to claim 1, characterized in that, The electrode needle is positioned near the center of the connecting frame, and there are multiple support columns, each positioned near the edge of the connecting frame.

5. The grounding resistance reducing device according to claim 1, characterized in that, The grounding assembly includes a conductive concrete block, the middle of which is connected to the support column.

6. The grounding resistance reducing device according to claim 5, characterized in that, The conductive concrete block has several grounding holes on the side facing the connecting frame, and a needle-shaped grounding electrode is inserted into each grounding hole.

7. The grounding resistance reduction device according to claim 5, characterized in that, The width of the conductive concrete block gradually decreases from the end closest to the connecting frame to the end furthest from the connecting frame.

8. The grounding resistance reducing device according to claim 7, characterized in that, The conductive concrete block is hemispherical in shape, with the side of the conductive concrete block facing the connecting frame being a flat surface and the flat surface being circular in shape, and the side of the conductive concrete block facing away from the connecting frame being a hemispherical surface.

9. The grounding resistance reducing device according to any one of claims 2-3, characterized in that, The resistance reduction mechanism includes a graphite block and a metal support grid encapsulated within the graphite block, and the metal support grid is connected to the conductive connector.

10. The grounding resistance reducing device according to any one of claims 2-3, characterized in that, Each of the conductive connectors is provided with a connecting assembly at its end. The connecting assembly includes a sleeve, a knob, and a support block. The sleeve is fitted onto the end of the conductive connector. The support block is disposed on the outside of the sleeve, and both ends of the support block are connected to the outer surface of the sleeve. The middle part of the support block is spaced apart from the outer surface of the sleeve to form an insertion channel. A threaded hole is opened in the middle part of the support block. The knob is threadedly connected to the side wall of the threaded hole. When the knob is rotated along the side wall of the threaded hole, it approaches the outer surface of the sleeve.

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