An electrical equipment grounding device for a hydroelectric plant

Abstract

This utility model discloses a grounding device for electrical equipment in a hydropower plant, belonging to the field of electrical equipment grounding technology. It includes a mounting plate, with a grounding rod body fixedly connected inside the mounting plate. A protective cover is provided on the top of the mounting plate. A connecting component for connecting to a grounding jumper wire is provided outside the grounding rod body. An auxiliary installation mechanism is provided outside the mounting plate to assist in installation and adjust the installation position. This utility model effectively solves the problems of existing grounding devices where the grounding nail installation position is fixed and difficult to adapt to different installation environments, and the gap between the protective cover and the grounding jumper wire leading to ineffective positioning and susceptibility to impurities affecting the grounding effect.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment grounding technology, specifically to a grounding device for electrical equipment in a hydropower plant. Background Technology

[0002] A hydroelectric power plant, also known as a water power plant, is a facility that converts the potential and kinetic energy of water into electrical energy. Its basic production process is as follows: water is drawn from a high point in a river or other reservoir; the pressure or velocity of the water drives a turbine to rotate, converting gravitational potential and kinetic energy into mechanical energy; then, the turbine drives a generator to rotate, converting the mechanical energy into electrical energy. The power system of a hydroelectric power plant contains a large number of generators, transformers, power lines, and circuit breakers. To ensure safe operation, all of this equipment must be properly grounded during use; therefore, the grounding device for electrical equipment plays a crucial role in the power system of a hydroelectric power plant.

[0003] In the prior art, there are existing studies and applications related to grounding devices for electrical equipment in hydropower plants. For example, Chinese utility model patent CN213340754U discloses a grounding device for electrical equipment in hydropower plants. This device includes a grounding rod body and grounding jumpers. A grounding mounting plate is movably mounted on the grounding rod body, and a protective cover is fixedly mounted on the top of the grounding rod body. A triggering unit is provided between the grounding mounting plate and the protective cover. The triggering unit is configured to trigger an audible and visual alarm on the top of the protective cover when the grounding jumpers are subjected to external force. This grounding device for electrical equipment in hydropower plants allows the grounding mounting plate to be installed on the grounding rod body, and several grounding jumpers to be installed on the grounding mounting plate. This not only allows several pieces of equipment to be grounded simultaneously but also facilitates subsequent dismantling work. The protective cover protects the grounding mounting plate, and the triggering unit activates the audible and visual alarm when the grounding jumpers are subjected to external force, facilitating subsequent inspection and maintenance by maintenance personnel.

[0004] However, the above-mentioned technical solutions still have certain limitations in practical applications: on the one hand, the fixed installation position of the grounding nails makes it difficult to adapt to different installation environments and cannot be flexibly adjusted to meet installation requirements under different site conditions; on the other hand, there is a gap at the contact point between the protective cover plate and the grounding jumper wire, which not only fails to effectively limit the grounding jumper wire but also easily allows dust, rainwater, and other impurities to enter, thus affecting the grounding effect and making it difficult to ensure the reliability of the grounding of electrical equipment in hydropower plants, which is detrimental to the safe production of hydropower plants. Therefore, it is necessary to propose a grounding device for electrical equipment in hydropower plants to solve the above problems. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a grounding device for electrical equipment in hydropower plants. It aims to solve the problems of existing grounding devices having fixed grounding nail installation positions that are difficult to adapt to different installation environments, and gaps at the contact points between the protective cover and the grounding jumper wire that prevent effective positioning and make the grounding effect susceptible to impurities. To achieve the above objectives, this utility model provides the following technical solution:

[0006] A grounding device for electrical equipment in a hydropower plant includes a mounting plate, a grounding rod body fixedly connected inside the mounting plate, and a protective cover plate on the top of the mounting plate; a connecting component for connecting to a grounding jumper wire is provided outside the grounding rod body; and an auxiliary installation mechanism is provided outside the mounting plate for assisting installation and adjusting the installation position.

[0007] Furthermore, the auxiliary installation mechanism includes a limiting frame, which is fixedly connected to the outside of the mounting plate; an installation block is slidably connected inside the limiting frame, and the installation block is provided with mounting nails; the installation block is provided with a fixing component for fixing the installation block and the limiting frame relatively in place after they are adjusted.

[0008] Furthermore, the fixing component includes a sliding column; the sliding column is fixedly connected to the top of the mounting block, and a second spring and a movable plate are sequentially sleeved on the sliding column from top to bottom, with the upper end of the second spring fixedly connected to the sliding column and the lower end fixedly connected to the movable plate; a locking block is fixedly connected to the bottom of the movable plate; and the limiting frame is provided with a plurality of slots for cooperating with the locking block.

[0009] Furthermore, the protective cover plate is provided with a protective shock absorption mechanism; the protective shock absorption mechanism includes at least a sealing and limiting component, which is disposed on the outside of the protective cover plate.

[0010] Furthermore, the sealing and limiting assembly includes a connecting platform, which is fixedly connected to the side wall of the protective cover. A limiting rod is fixedly connected inside the connecting platform, and a pair of movable blocks are slidably connected to the outside of the limiting rod. A sealing clamp is fixedly connected to the bottom of the movable blocks. A threaded rod is rotatably connected inside the connecting platform. The threaded rod has at least two sections of threads with opposite directions along its axial direction. The pair of sealing clamps move closer or further away synchronously when the threads rotate.

[0011] Furthermore, the threaded rod is threadedly connected to the movable block, and the movable block is slidably connected to the connecting platform; the sealing clamp is provided with a concave surface for contacting the grounding jumper wire.

[0012] Furthermore, the protective shock absorption mechanism also includes a protective component, which is disposed inside the protective cover plate.

[0013] Furthermore, the protective assembly includes a connecting box fixedly connected to the bottom of the protective cover plate, a slider slidably connected inside the connecting box, and a protective plate fixedly connected to the top of the slider; a damping rod fixedly connected inside the connecting box, and a sliding plate fixedly connected to the end of the damping rod away from the connecting box; a sliding rod fixedly connected inside the connecting box, and the sliding plate slidably connected to the sliding rod; a first spring sleeved on the sliding rod, one end of the first spring fixedly connected to the inside of the connecting box, and the other end fixedly connected to the sliding plate; a first fixing block fixedly connected to the bottom of the slider, a second fixing block fixedly connected to the top of the sliding plate, and both ends of the connecting rod rotatably connected to the first fixing block and the second fixing block, respectively.

[0014] Furthermore, the first fixing block, the second fixing block and the connecting rod are provided with connecting grooves at corresponding positions, and the connecting rod is rotatably connected inside the connecting grooves.

[0015] Furthermore, the connection assembly includes a grounding bolt, which is fixedly connected to the outside of the grounding rod body. A nut is threaded onto the outside of the grounding bolt, and the nut controls the connection and disconnection of the grounding rod body and the grounding jumper wire by adjusting the depth to which it is screwed into the grounding bolt.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model uses the movement of the movable plate in conjunction with the second spring to drive the movement of the locking block, thereby achieving adjustment and limiting of the position of the mounting block. This effectively solves the problem of fixed installation position of ground nails in the prior art, allowing the device to flexibly adjust the installation position according to different installation environments, greatly improving the device's adaptability to various complex installation scenarios and meeting diverse installation and usage needs.

[0018] 2. This utility model utilizes a threaded rod with bidirectional threads, which, in conjunction with a limiting rod, drives the movable block to move, thereby moving the sealing clamp and adjusting its position. This structure not only stably clamps and limits grounding jumpers of different sizes, preventing displacement and ensuring reliable grounding connections, but also effectively seals the gap between the protective cover and the grounding jumper, preventing dust, rainwater, and other impurities from entering, thus ensuring unaffected grounding performance and improving the protective performance of the grounding device.

[0019] 3. This utility model uses the movement of the protective plate to make the slider slide inside the connecting box, which can play a good role in shock absorption and protection against accidental crushing, collision and other situations that the device is subjected to. It can effectively reduce the damage caused by accidental situations to the device, improve the impact resistance and service life of the device, further ensure the stable operation of the grounding system of the electrical equipment of the hydropower plant, and is conducive to the safe production of the hydropower plant. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the auxiliary installation mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the auxiliary installation mechanism of this utility model;

[0024] Figure 5 This is a schematic diagram of the sealing and limiting component structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the internal structure of the sealing and limiting component of this utility model;

[0026] Figure 7 This is a schematic diagram of the protective component structure of this utility model;

[0027] Figure 8 This is a schematic diagram of the internal structure of the protective component of this utility model.

[0028] The attached diagram is labeled as follows: 1. Mounting plate; 2. Grounding rod body; 21. Grounding bolt; 22. Nut; 3. Protective cover plate; 4. Grounding jumper wire; 5. Auxiliary installation mechanism; 51. Limiting frame; 52. Mounting block; 53. Mounting nail; 54. Sliding column; 55. Second spring; 56. Movable plate; 57. Locking block; 6. Protective shock absorption mechanism; 61. Sealing and limiting assembly; 611. Connecting platform; 612. Threaded rod; 613. Sealing clamp; 614. Limiting rod; 615. Movable block; 62. Protective assembly; 621. Connecting box; 622. Sliding block; 623. Protective plate; 624. First fixing block; 625. Sliding rod; 626. First spring; 627. Damping rod; 628. Slide plate; 629. Second fixing block; 6210. Connecting rod. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0032] In the description of this utility model, "multiple" means two or more.

[0033] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0034] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] Example 1

[0037] See attached Figures 1-8 This embodiment provides a grounding device for electrical equipment in a hydropower plant, such as... Figure 1 and Figure 2As shown, the device includes a mounting plate 1, with a grounding rod body 2 fixedly connected inside the mounting plate 1. A protective cover 3 is provided on the top of the mounting plate 1. The mounting plate 1 and the protective cover 3 are connected and fixed by locking bolts, facilitating the inspection and maintenance of the grounding rod body 2 and the connecting components installed on its exterior. The connecting components include grounding bolts 21 and nuts 22. Two grounding bolts 21 can be provided, welded and fixed symmetrically to the exterior of the grounding rod body 2. When a grounding jumper wire 4 needs to be connected, the end of the grounding jumper wire 4 is sleeved over the grounding bolt 21, and then the nut 22 is tightened. Through the threaded engagement between the nut 22 and the grounding bolt 21, the grounding jumper wire 4 is tightly pressed against the outer wall of the grounding rod body 2, achieving a reliable electrical connection. When disconnection is required, the grounding jumper wire 4 can be removed by loosening the nut 22 in the opposite direction.

[0038] An auxiliary installation mechanism 5 is provided on the outside of the mounting plate 1. The auxiliary installation mechanism 5 is used to assist in installation and adjust the installation position. Specifically, the auxiliary installation mechanism 5 includes a limiting frame 51, which can be fixedly connected to the outer walls of both sides of the mounting plate 1 by bolts. The limiting frame 51 is provided with a U-shaped groove. The mounting block 52 can be set as a cuboid structure and is slidably connected in the internal groove of the limiting frame 51. The mounting block 52 is also provided with a fixing component for fixing the mounting block 52 and the limiting frame 51 to each other after they are adjusted to the correct position. The mounting nail 53 penetrates the upper and lower surfaces of the mounting block 52 and is used to fix the device to the ground foundation.

[0039] Specifically, the structure of the fixed component is as follows:

[0040] like Figure 3 and Figure 4 As shown, the fixing assembly includes a sliding column 54, a second spring 55, and a movable plate 56. The sliding column 54 can be vertically welded to the top center of the mounting block 52. The upper end of the second spring 55 is welded and fixed to the top of the sliding column 54, and the lower end is welded to the movable plate 56. The movable plate 56 has a through hole in the middle that matches the sliding column 54, allowing it to slide up and down along the sliding column 54. A locking block 57 is welded to the bottom of the movable plate 56. The upper surface of the limiting frame 51 has several slots along its length, and the shape of the slots matches the locking block 57. When the installation position needs to be adjusted, the movable plate 56 is pulled upward to compress the second spring 55, causing the locking block 57 to disengage from the slot. At this time, the mounting block 52 can be pushed to slide within the limiting frame 51. After sliding to the appropriate position, the movable plate 56 is released. Under the elastic force of the second spring 55, the movable plate 56 moves downward, causing the locking block 57 to engage in the corresponding slot, thus achieving relative fixation between the mounting block 52 and the limiting frame 51.

[0041] This embodiment discloses a grounding device for electrical equipment in a hydropower plant, which solves the problems of fixed installation location and inconvenient adjustment of traditional grounding devices. The device has a compact overall structure, flexible installation, and can effectively adapt to the complex working environment of a hydropower plant.

[0042] Example 2

[0043] See attached Figures 1-8 Based on Embodiment 1, in the prior art, there is a gap at the contact point between the protective cover 3 and the grounding jumper 4, which makes it impossible to limit the grounding jumper 4 and makes it easy for dust or rainwater and other impurities to affect the grounding effect. Therefore, this utility model provides Embodiment 2 to solve the above-mentioned technical problems. Figure 1 and Figure 2 As shown, the protective cover plate 3 is also provided with a protective shock absorption mechanism 6. The protective shock absorption mechanism 6 includes at least a sealing limit component 61, which is disposed on the outside of the protective cover plate 3.

[0044] Specifically, the structure of the sealing and limiting assembly 61 is as follows:

[0045] like Figure 5 and Figure 6 As shown, the sealing and limiting assembly 61 is disposed on both outer walls of the protective cover plate 3. The sealing and limiting assembly 61 includes a connecting platform 611, which can be a cuboid and is fixed to the side wall of the protective cover plate 3 by screws or welding. A rectangular cavity is formed inside the connecting platform 611. The two ends of the limiting rod 614 are fixed to the side wall of the cavity of the connecting platform 611. Two movable blocks 615 are sleeved on the outside of the limiting rod 614, and sealing clamps 613 are fixedly connected to their bottoms respectively. The sealing clamps 613 can be made of rubber, and the concave arc of their inner side is adapted to the outer diameter of the grounding jumper wire 4 for tight contact with the grounding jumper wire 4. The threaded rod 612 is arranged parallel to the limiting rod 614. The threaded rod 612 has two threaded sections with opposite directions of rotation, which are rotatably connected to the movable blocks 615 by threads. One end of the threaded rod extends to the outside of the connecting platform 611 and is fixed with a knob. When the knob is turned, the threaded rod 612 rotates, causing the two movable blocks 615 to move closer or further away from the limit rod 614 in sync, thereby causing the sealing clamp 613 to clamp or loosen the grounding jumper wire 4, thus achieving sealing protection at the connection between the grounding jumper wire 4 and the protective cover plate 3.

[0046] Example 3

[0047] See attached Figures 1-8 Based on Embodiment 2, this embodiment further provides a grounding device for electrical equipment in a hydropower plant. The difference between this grounding device and the grounding device provided in Embodiment 2 is that the protective shock absorption mechanism 6 also includes a protective component 62, which is disposed inside the protective cover plate 3.

[0048] Specifically, the structure of the protective component 62 is as follows:

[0049] like Figure 7 and Figure 8 As shown, the protective component 62 includes a connecting box 621, which can be a cuboid and is welded and fixed to the top inner side of the protective cover plate 3. A slider 622 can be a rectangular block, slidably connected to the inner wall of the connecting box 621, with a protective plate 623 welded to its top for directly bearing external impact forces. A sliding rod 625 consists of two parallel round rods, both ends fixed to the inner wall of the connecting box 621, and a sliding plate 628 fitted onto the outside of the sliding rod 625 and slidable along it. A first spring 626 is fitted onto the outside of the sliding rod 625, one end fixedly connected to the inner wall of the connecting box 621, and the other end fixedly connected to the sliding plate 628. A damping rod 627 is fixedly connected inside the connecting box 621. The damping rod 627 can be a hydraulic damper, with its cylinder end fixed to the inner wall of the connecting box 621 and its piston rod end fixedly connected to the sliding plate 628. The first fixing block 624 is fixedly connected to the bottom of the slider 622, and the second fixing block 629 is fixedly connected to the top of the slide plate 628. Both blocks have corresponding connecting grooves. The two ends of the connecting rod 6210 can be rotatably connected to the connecting grooves via pins. It should be noted that the pin-rotation connection is existing technology and will not be described further here. When the protective plate 623 is impacted by an external force, the slider 622 slides downwards, pushing the slide plate 628 along the sliding rod 625 via the connecting rod 6210. The first spring 626 is compressed, generating elastic force, while the damping rod 627 provides damping force. Together, they achieve buffering and shock absorption, effectively protecting the grounding device and internal components.

[0050] The usage process of the electrical equipment grounding device provided by this utility model is as follows:

[0051] In use, the operator first moves the device to the designated location. The operator then adjusts it according to the installation environment. The operator pulls the movable plate 56, which, in conjunction with the second spring 55, causes the locking block 57 to move. This movement of the mounting block 52 moves the mounting nail 53 to the designated location, releasing the movable plate 56. Under the action of the second spring 55, the locking block 57 engages with the limiting frame 51, facilitating the adjustment and limiting of the mounting block 52's position, thus meeting the installation requirements of different installation environments. After installation, the grounding jumper 4 is installed and positioned using the nut 22 and grounding bolt 21. Then, the protective cover 3 is installed between the protective cover 3 and the mounting plate 1 using the locking bolt. After installation, the operator rotates the threaded rod 612. This rotation, in conjunction with the limiting rod 614, moves the movable block 615, thereby moving the sealing clamp 613 until it clamps and limits the grounding jumper 4. This allows for adjustment of the sealing clamp 613's position, enabling clamping and limiting of grounding jumpers 4 of different sizes while simultaneously ensuring the proper positioning of the protective cover 3 and the mounting plate 1. The gap between the grounding jumpers 4 is sealed for protection. At the same time, when the device is used, if it is crushed or collided, the movement of the protective plate 623 causes the slider 622 to slide inside the connecting box 621, thereby moving the first fixing block 624. In conjunction with the connecting rod 6210, the second fixing block 629 moves. In conjunction with the damping rod 627 and the first spring 626, the sliding plate 628 slides outside the sliding rod 625, thereby damping the movement of the protective plate 623. This facilitates shock absorption and protection against accidents such as crushing or collisions, and prevents accidents from happening to the device.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A grounding device for electrical equipment in a hydropower plant, characterized in that: The device includes an installation plate (1), a grounding rod body (2) is fixedly connected inside the installation plate (1), and a protective cover plate (3) is provided on the top of the installation plate (1); a connection component for connecting with the grounding jumper wire (4) is provided on the outside of the grounding rod body (2); an auxiliary installation mechanism (5) is provided on the outside of the installation plate (1), and the auxiliary installation mechanism (5) is used to assist in installation and adjust the installation position.

2. The grounding device for electrical equipment in a hydropower plant according to claim 1, characterized in that: The auxiliary installation mechanism (5) includes a limiting frame (51), which is fixedly connected to the outside of the mounting plate (1); an installation block (52) is slidably connected inside the limiting frame (51), and an installation nail (53) is provided inside the installation block (52); a fixing component is provided on the installation block (52) for fixing the installation block (52) and the limiting frame (51) relatively after they are adjusted to the correct position.

3. A grounding device for electrical equipment in a hydropower plant according to claim 2, characterized in that: The fixing component includes a sliding column (54); the sliding column (54) is fixedly connected to the top of the mounting block (52), and the sliding column (54) is fitted with a second spring (55) and a movable plate (56) from top to bottom, and the upper end of the second spring (55) is fixedly connected to the sliding column (54), and the lower end is fixedly connected to the movable plate (56); a locking block (57) is fixedly connected to the bottom of the movable plate (56); the limiting frame (51) is provided with a number of slots for cooperating with the locking block (57).

4. A grounding device for electrical equipment in a hydropower plant according to claim 1, characterized in that: The protective cover (3) is provided with a protective shock absorption mechanism (6); the protective shock absorption mechanism (6) includes at least a sealing limit component (61), which is disposed on the outside of the protective cover (3).

5. A grounding device for electrical equipment in a hydropower plant according to claim 4, characterized in that: The sealing and limiting assembly (61) includes a connecting platform (611), which is fixedly connected to the side wall of the protective cover (3). A limiting rod (614) is fixedly connected inside the connecting platform (611). A pair of movable blocks (615) are slidably connected to the outside of the limiting rod (614). A sealing clamp (613) is fixedly connected to the bottom of the movable block (615). A threaded rod (612) is rotatably connected inside the connecting platform (611). The threaded rod (612) has at least two threads with opposite directions along its axial direction. The pair of sealing clamps (613) move closer or further away synchronously when the threads rotate.

6. A grounding device for electrical equipment in a hydropower plant according to claim 5, characterized in that: The threaded rod (612) is threadedly connected to the movable block (615), and the movable block (615) is slidably connected to the connecting platform (611); the sealing clamp (613) is provided with a concave surface for contacting the grounding jumper wire (4).

7. A grounding device for electrical equipment in a hydropower plant according to claim 4, characterized in that: The protective shock absorption mechanism (6) also includes a protective component (62), which is disposed inside the protective cover plate (3).

8. A grounding device for electrical equipment in a hydropower plant according to claim 7, characterized in that: The protective assembly (62) includes a connecting box (621) fixedly connected to the bottom of the protective cover (3), a slider (622) slidably connected inside the connecting box (621), and a protective plate (623) fixedly connected to the top of the slider (622); a damping rod (627) is fixedly connected inside the connecting box (621), and a sliding plate (628) is fixedly connected to one end of the damping rod (627) away from the connecting box (621); a sliding rod (625) is fixedly connected inside the connecting box (621), and the sliding plate (628) is connected to... The slide rod (625) is slidably connected; a first spring (626) is sleeved on the slide rod (625), one end of the first spring (626) is fixedly connected to the inside of the connecting box (621), and the other end is fixedly connected to the slide plate (628); a first fixing block (624) is fixedly connected to the bottom of the slider (622), a second fixing block (629) is fixedly connected to the top of the slide plate (628), and the two ends of the connecting rod (6210) are rotatably connected to the first fixing block (624) and the second fixing block (629) respectively.

9. A grounding device for electrical equipment in a hydropower plant according to claim 8, characterized in that: The first fixing block (624), the second fixing block (629) and the connecting rod (6210) are provided with connecting grooves at corresponding positions, and the connecting rod (6210) is rotatably connected inside the connecting groove.

10. A grounding device for electrical equipment in a hydropower plant according to claim 1, characterized in that: The connection assembly includes a grounding bolt (21), which is fixedly connected to the outside of the grounding rod body (2). A nut (22) is threaded onto the outside of the grounding bolt (21). The nut (22) controls the connection and disconnection of the grounding rod body (2) and the grounding jumper wire (4) by adjusting the depth of screwing into the grounding bolt (21).

Images