Grounding device of electrical equipment

Abstract

The utility model relates to the technical field of electrical equipment, in particular to a grounding device of electrical equipment. The grounding device of the electrical equipment of the power plant comprises a metal ground inserting rod inserted into the ground and a metal connecting rod arranged right above the metal ground inserting rod, a connecting mechanism used for connection is arranged between the metal ground inserting rod and the metal connecting rod, and the metal ground inserting rod is connected with the metal connecting rod through the connecting mechanism arranged between the metal ground inserting rod and the metal connecting rod. After the metal connecting rod is connected with electrical equipment of a power plant, vibration generated in operation of the electrical equipment enables the metal connecting rod and the metal ground inserting rod to be flexibly connected through displacement of the connecting mechanism, and the situation that the metal ground inserting rod and the metal connecting rod are separated due to vibration due to traditional hard connection, and the grounding device fails is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of grounding devices for electrical equipment, and specifically relates to a new type of grounding device for electrical equipment in power plants. Background Technology

[0002] A large number of electrical devices are used inside power plants to support the overall operation of the power plant. In order to ensure the normal operation of these electrical devices and the safety of the production process, these electrical devices must be properly grounded during use. Grounding is an electrical safety measure that connects the metal casing, neutral point, etc. of electrical equipment to the earth to prevent electrical faults from harming the equipment and personal safety.

[0003] However, when existing grounding devices are in use, vibrations are generated during the operation of some electrical equipment in the power plant. Since the grounding devices are often rigidly connected, the vibrations can easily cause the connection points of the grounding devices to separate, resulting in grounding device failure. This can cause the power plant's electrical equipment to be disconnected from the earth, which can easily lead to electrical faults and endanger the safety of equipment and personnel. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a novel grounding device for power plant electrical equipment. The specific technical solution is as follows:

[0005] A new type of grounding device for power plant electrical equipment includes a metal grounding rod inserted into the ground and a metal connecting rod disposed directly above the metal grounding rod, wherein a connecting mechanism for connecting the metal grounding rod and the metal connecting rod is provided.

[0006] The connecting mechanism includes a copper wire, a base plate, a movable plate, a guide rod, a washer, a nut, and a spring. The copper wire is welded between the metal grounding rod and the metal connecting rod, and the copper wire is arc-shaped. The base plate is welded to the upper end of the metal grounding rod, the movable plate is welded to the lower end of the metal connecting rod, the lower end of the guide rod is welded to the upper surface of the base plate, and the upper end of the guide rod passes through a hole opened on the surface of the movable plate and is screwed into the nut. Two springs are sleeved on the outside of the guide rod, and the two springs are located on the upper and lower surfaces of the movable plate, respectively. The washer sleeved on the upper end of the guide rod is located between the nut and the spring.

[0007] Preferably, the guide rod array welded to the upper surface of the base plate is distributed in several ways, and a protective cover is welded to the outside of the base plate to cover the connecting mechanism. The surface of the protective cover has vent holes for ventilation.

[0008] Preferably, three copper wires are provided for welding between the metal grounding rod and the metal connecting rod.

[0009] Preferably, a steel mesh is welded to the upper part of the metal grounding pole, and a counterweight block buried in the soil is cast outside the steel mesh.

[0010] Preferably, the counterweight includes a cast-in-place concrete block with a steel mesh cast outside, the outer surface of the cast-in-place concrete block is provided with a metal mesh for protection, and the outer surface of the cast-in-place concrete block is provided with a cement coating wrapped around the metal mesh.

[0011] Preferably, the metal grounding rod has several arrayed metal plates welded to its middle section.

[0012] Preferably, the upper end of the metal connecting rod is welded with a connecting lug that connects to the grounding terminal of the power plant's electrical equipment.

[0013] The beneficial effects of this utility model are as follows: Through the connecting mechanism between the metal grounding rod and the metal connecting rod, after the metal connecting rod is connected to the power plant's electrical equipment, the vibration generated during the operation of the electrical equipment is displaced through the connecting mechanism, resulting in a soft connection between the metal connecting rod and the metal grounding rod. This avoids the separation of the metal grounding rod and the metal connecting rod due to vibration caused by traditional hard connections, which could lead to grounding device failure. The connecting mechanism includes a copper conductor, a base plate, a movable plate, a guide rod, a washer, a nut, and a spring. The copper conductor ensures electrical continuity between the metal grounding rod and the metal connecting rod. The guide rod welded to the upper surface of the base plate limits the movable plate. Two springs, sleeved on the guide rod, are located on the upper and lower surfaces of the movable plate, respectively. This allows the upper spring of the guide rod to be fixed between the movable plate and the washer after the upper end of the guide rod is locked with the nut, while the lower spring of the guide rod is fixed between the base plate and the movable plate. This facilitates displacement of the metal connecting rod through the springs when it vibrates with the movable plate, ensuring reliable connection between the metal grounding rod and the metal connecting rod and preventing grounding device connection failure. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of a half-section of the present invention;

[0016] Figure 3 This is a schematic diagram of the connection structure between the metal grounding rod and the metal connecting rod in this utility model;

[0017] Figure 4 This is a schematic diagram of the metal grounding rod, metal connecting rod, and copper wire structure in this utility model.

[0018] Figure 5 This is a schematic diagram of the metal grounding pole and steel mesh structure in this utility model;

[0019] Figure 6This is a schematic diagram of the metal grounding rod and metal sheet structure in this utility model;

[0020] Figure 7 for Figure 2 A magnified structural diagram of point A in the middle.

[0021] Reference numerals: 1. Metal grounding rod; 2. Metal connecting rod; 3. Copper wire; 4. Base plate; 5. Movable plate; 6. Guide rod; 7. Washer; 8. Nut; 9. Spring; 10. Protective cover; 11. Vent hole; 12. Counterweight; 121. Cast-in-place concrete block; 122. Metal mesh; 123. Cement outer coating; 13. Reinforcing mesh; 14. Metal sheet; 15. Connecting lug. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort in accordance with the embodiments of the basic utility model are within the protection scope of this utility model.

[0023] A new type of grounding device for power plant electrical equipment includes a metal grounding rod 1 inserted into the ground and a metal connecting rod 2 disposed directly above the metal grounding rod 1. A connecting mechanism for connecting the metal grounding rod 1 and the metal connecting rod 2 is provided between them.

[0024] The connecting mechanism includes a copper wire 3, a base plate 4, a movable plate 5, a guide rod 6, a washer 7, a nut 8, and a spring 9. The copper wire 3 is welded between the metal grounding rod 1 and the metal connecting rod 2, and the copper wire 3 is arc-shaped. The base plate 4 is welded to the upper end of the metal grounding rod 1, the movable plate 5 is welded to the lower end of the metal connecting rod 2, the lower end of the guide rod 6 is welded to the upper surface of the base plate 4, and the upper end of the guide rod 6 passes through a hole opened on the surface of the movable plate 5 and is screwed into the nut 8. Two springs 9 are sleeved on the outside of the guide rod 6, and the two springs 9 are located on the upper and lower surfaces of the movable plate 5, respectively. The washer 7 sleeved on the upper end of the guide rod 6 is located between the nut 8 and the spring 9.

[0025] The connection mechanism between the metal grounding rod 1 and the metal connecting rod 2 allows the metal connecting rod 2 to be connected to the power plant's electrical equipment. Vibrations generated during the operation of the electrical equipment cause displacement of the connection mechanism, resulting in a flexible connection between the metal connecting rod 2 and the metal grounding rod 1. This avoids the separation caused by vibration in traditional rigid connections, which could lead to grounding device failure. The connection mechanism includes a copper conductor 3, a base plate 4, a movable plate 5, a guide rod 6, a washer 7, a nut 8, and a spring 9. The copper conductor 3 ensures the electrical connection between the metal grounding rod 1 and the metal connecting rod 2. The conductor is connected, and the guide rod 6 welded to the upper surface of the base plate 4 is used to limit the movable plate 5. The two springs 9 connected to the guide rod 6 are located on the upper and lower surfaces of the movable plate 5, respectively. This makes it easy for the upper end of the guide rod 6 to be locked by the nut 8, so that the spring 9 at the upper part of the guide rod 6 is fixed between the movable plate 5 and the washer 7, and the spring 9 at the lower part of the guide rod 6 is fixed between the base plate 4 and the movable plate 5. This makes it easy for the metal connecting rod 2 to move through the spring 9 when the movable plate 5 vibrates, so that the metal grounding rod 1 and the metal connecting rod 2 maintain reliable connection, thereby avoiding failure of the grounding device connection.

[0026] In this embodiment, a number of guide rods 6 are welded to the upper surface of the base plate 4. A protective cover 10 is welded to the outside of the base plate 4 to cover the connecting mechanism. The surface of the protective cover 10 is provided with ventilation holes 11 for ventilation, which facilitates the cooperation of the guide rods 6 and increases the stability of the movable plate 5 when it is displaced.

[0027] In this embodiment, three copper wires 3 are provided for welding between the metal grounding rod 1 and the metal connecting rod 2. The three copper wires 3 welded between the metal grounding rod 1 and the metal connecting rod 2 facilitate the cooperation of the three copper wires 3 to increase the reliability of the connection between the metal grounding rod 1 and the metal connecting rod 2.

[0028] In this embodiment, a steel mesh 13 is welded to the upper part of the metal grounding pole 1, and a counterweight block 12 buried in the soil is cast outside the steel mesh 13.

[0029] In this embodiment, the counterweight 12 includes a cast-in-place concrete block 121 cast outside a steel mesh 13. The outer surface of the cast-in-place concrete block 121 is provided with a protective metal mesh 122. The outer surface of the cast-in-place concrete block 121 is provided with a cement coating 123 wrapped around the metal mesh 122. The steel mesh 13 welded to the upper part of the metal grounding rod 1, and the counterweight 12 cast outside the steel mesh 13, increases the counterweight of the metal grounding rod 1, thereby increasing the stability of the metal grounding rod 1 fixed underground. The counterweight 12, composed of the metal mesh 122 and the cement coating 123, increases the strength of the outer surface of the cast-in-place concrete block 121, while the cement coating 123 protects the metal mesh 122.

[0030] In this embodiment, a number of arrayed metal plates 14 are welded to the middle of the metal grounding pole 1. The metal plates 14 welded to the middle of the metal grounding pole 1 facilitate the increase of the contact area with the soil when the metal grounding pole 1 is inserted into the ground.

[0031] In this embodiment, the upper end of the metal connecting rod 2 is welded with a connecting lug 15 that connects to the grounding terminal of the power plant's electrical equipment.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A grounding device for electrical equipment, comprising a metal grounding rod (1) inserted into the ground, and a metal connecting rod (2) disposed directly above the metal grounding rod (1), characterized in that: A connecting mechanism is provided between the metal grounding rod (1) and the metal connecting rod (2) for connection; The connecting mechanism includes a copper wire (3), a base plate (4), a movable plate (5), a guide rod (6), a washer (7), a nut (8), and a spring (9). The copper wire (3) is welded between the metal grounding rod (1) and the metal connecting rod (2), and the copper wire (3) is arc-shaped. The base plate (4) is welded to the upper end of the metal grounding rod (1). The movable plate (5) is welded to the lower end of the metal connecting rod (2). The lower end of the guide rod (6) is welded to the upper surface of the base plate (4). The upper end of the guide rod (6) passes through a hole opened on the surface of the movable plate (5) and is screwed into the nut (8). Two springs (9) are sleeved on the outside of the guide rod (6), and the two springs (9) are located on the upper and lower surfaces of the movable plate (5), respectively. The washer (7) sleeved on the upper end of the guide rod (6) is located between the nut (8) and the spring (9).

2. The grounding device for electrical equipment as described in claim 1, characterized in that: The guide rods (6) welded to the upper surface of the base plate (4) are arranged in an array. A protective cover (10) covering the outside of the connecting mechanism is welded to the outside of the base plate (4). The surface of the protective cover (10) is provided with ventilation holes (11) for ventilation.

3. The grounding device for electrical equipment as described in claim 1, characterized in that: Three copper wires (3) are provided for welding between the metal grounding rod (1) and the metal connecting rod (2).

4. The grounding device for electrical equipment as described in claim 1, characterized in that: The upper part of the metal grounding pole (1) is welded with a steel mesh (13), and a counterweight block (12) buried in the soil is cast outside the steel mesh (13).

5. The grounding device for electrical equipment as described in claim 4, characterized in that: The counterweight (12) includes a cast-in-place concrete block (121) cast outside a steel mesh (13). The outer surface of the cast-in-place concrete block (121) is provided with a metal mesh (122) for protection. The outer surface of the cast-in-place concrete block (121) is provided with a cement outer coating (123) wrapped around the metal mesh (122).

6. The grounding device for electrical equipment as described in claim 1, characterized in that: The metal grounding rod (1) has several arrayed metal plates (14) welded to its middle part.

7. The grounding device for electrical equipment as described in claim 1, characterized in that: The upper end of the metal connecting rod (2) is welded with a connecting lug (15) that connects to the grounding terminal of the power plant's electrical equipment.

Images