Grounding device for power plant debugging
By introducing quick-clamp components and anti-loosening components into the grounding device used for power plant commissioning, the problem of loose conductor end clamps has been solved, enabling rapid and stable clamping and convenient release, thus improving the safety and ease of operation during power plant commissioning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG SHENGBOLAI POWER ENG CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-19
AI Technical Summary
During the commissioning of existing power plants, there is a risk of loosening of the conductor end clamps of portable short-circuit grounding wires, which affects the stability of use, especially since good contact cannot be maintained before the threaded structure is fully tightened.
A grounding device including conductor end clamps, grounding wires, insulating rods, and insulating sleeves is designed. It adopts quick-clamping components and anti-loosening components. The quick-clamping components achieve quick clamping through horizontal clamping plates and telescopic guide rods, while the anti-loosening components ensure a stable clamping state and prevent loosening through reinforcement units and linkage units.
It enables quick and secure clamping of the conductor end clamp to the conductor to be grounded, preventing loosening and improving stability. It also allows for easy release of the clamp when needed, enhancing the convenience and safety of operation.
Smart Images
Figure CN224264273U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grounding device technology, specifically a grounding device for power plant commissioning. Background Technology
[0002] In power plant commissioning operations, grounding devices are one of the most critical safety measures to ensure personnel safety and prevent equipment damage. Depending on the different stages of commissioning (static commissioning, dynamic commissioning, reverse power supply, grid connection, etc.) and the operation content, various grounding devices are used. The main types of grounding devices used include: portable short-circuit grounding wires, grounding switches, fixed grounding stakes / grounding bars, and dedicated grounding terminals.
[0003] Among them, portable short-circuit grounding wires (temporary grounding wires) are the most flexible and widely used grounding devices, used to establish reliable safety grounding at various power outage work points. Portable short-circuit grounding wires consist of the following parts:
[0004] Insulated operating rod: Used for installing and removing the grounding wire, providing a safe distance;
[0005] Multi-strand grounding soft copper wire: with sufficient cross-sectional area (selected according to the maximum possible short-circuit current, commonly such as 25mm²). 2 35mm 2 50mm 2 70mm 2 95mm 2 120mm 2 This ensures thermal and dynamic stability during short circuits.
[0006] Grounding clamp: Used to firmly clamp onto grounding bars, grounding stakes or frames. Common types include spiral type, flat type, and hand-held type.
[0007] Wire clamps (conductor end): used to firmly clamp onto conductors that need to be grounded (such as busbars, wires, equipment terminals). Common types include flat-mouth type, hand-held type (duckbill type), double spring type, etc. It is necessary to ensure good contact with the conductor.
[0008] When using conductor end clamps, hand-held (duckbill) and double-spring clamps achieve clamping through the elastic force of springs (or spring sheets), which poses a risk of loosening. Flat-mouth clamps use a threaded structure for clamping, which, although providing a stable clamping, cannot maintain a good contact state between the clamp and the conductor to be grounded until the threaded structure is fully tightened. Based on this, a grounding device for power plant commissioning is provided. Utility Model Content
[0009] The purpose of this utility model is to provide a grounding device for power plant commissioning in order to solve the problems mentioned above.
[0010] To achieve the above objectives, this utility model provides the following technical solution: a grounding device for power plant commissioning, comprising a conductor end clamp, a grounding wire, an insulating rod, and an insulating sleeve. The grounding wire is bolted to one side of the conductor end clamp, and the insulating sleeve is wrapped around the bottom outer side of the insulating rod. A quick-clamp assembly is provided inside the conductor end clamp, which is used to clamp and fix the conductor end clamp to the conductor to be grounded.
[0011] The top of the insulating rod is provided with an anti-loosening component extending to the inside of the conductor end clamp. The anti-loosening component includes a reinforcement unit and a linkage unit.
[0012] The reinforcement unit is used to reinforce the clamping state of the quick-clamp assembly;
[0013] The linkage unit is used to simultaneously drive the quick-clamp assembly to release the clamping of the conductor to be grounded when the reinforcement unit releases the reinforcement of the quick-clamp assembly.
[0014] As a further embodiment of this utility model: the quick clamp assembly includes a horizontal clamping plate, a telescopic guide rod, and a spring;
[0015] The horizontal clamp is vertically slidably installed inside the conductor end clamp and is in contact with the top of the inner wall of the conductor end clamp;
[0016] The telescopic guide rod is fixed to the bottom of the horizontal clamp and close to the opening of the conductor end clamp. The bottom of the telescopic guide rod passes through the bottom of the conductor end clamp and is vertically slidably connected to the conductor end clamp. The spring is sleeved on the outside of the telescopic guide rod and is located between the bottom of the horizontal clamp and the bottom of the inner wall of the conductor end clamp, and is used to continuously provide an upward pushing force to the horizontal clamp.
[0017] By aligning the notch between the horizontal clamp and the top of the conductor end clamp with the conductor to be grounded and then fitting them together, the clamping operation with the conductor to be grounded is achieved.
[0018] As a further embodiment of this utility model: the top of the inner wall of the conductor end clamp near the opening has an arc-shaped structure, and the top of the horizontal clamp plate near the opening of the conductor end clamp also has an arc-shaped structure.
[0019] As a further improvement of this utility model: the reinforcing unit includes a screw and a clamping block;
[0020] The screw is fixed to the top of the insulating rod. The screw passes through the bottom of the conductor end clamp to the inside of the conductor end clamp and is rotatably connected to the clamping block. The screw and the conductor end clamp are threaded together.
[0021] The clamping blocks are located directly below the horizontal clamping plate. The upward movement of the clamping blocks compresses the horizontal clamping plate to stabilize the clamping state of the horizontal clamping plate.
[0022] As a further improvement of this utility model: the linkage unit includes a connecting block and a T-shaped column;
[0023] The connecting block is fixed to the side of the clamping block, the T-shaped column is fixed to the top of the connecting block, and the side of the horizontal clamping plate is fixed with a linkage sleeve that slides and engages with the vertical rod of the T-shaped column.
[0024] The downward movement of the clamping block pulls the horizontal clamping plate and the linkage sleeve downward through the top protrusion of the T-shaped column, thereby releasing the clamping state of the horizontal clamping plate.
[0025] As a further embodiment of this utility model: the connecting block, T-shaped post, and T-shaped post are symmetrically arranged in two sets, and the connecting block, T-shaped post, and T-shaped post are far away from the opening of the conductor end clamp;
[0026] The horizontal clamping plate and the end face of the pressing block away from the telescopic guide rod are in contact with the inner wall end face of the conductor end clamp.
[0027] Compared with the prior art, the beneficial effects of this utility model are:
[0028] The quick-clamp assembly enables the conductor end clamp to be quickly clamped and fixed to the conductor to be grounded. The anti-loosening assembly reinforces the clamping state of the quick-clamp assembly, effectively preventing it from loosening and falling off during use, thus improving the stability of the device. At the same time, when the anti-loosening assembly is released, it can simultaneously release the clamping of the quick-clamp assembly to the conductor to be grounded, making removal easier. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the structure of this utility model;
[0030] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;
[0031] Figure 3 This is a disassembled schematic diagram of the quick-clamp assembly of this utility model.
[0032] In the diagram: 1. Conductor end clamp; 2. Grounding wire; 3. Insulating rod; 4. Insulating sleeve; 5. Quick clamp assembly; 501. Horizontal clamp plate; 502. Telescopic guide rod; 503. Spring; 504. Linkage sliding sleeve; 6. Anti-loosening assembly; 601. Screw; 602. Clamping block; 603. Connecting block; 604. T-shaped post. Detailed Implementation
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] Please see Figures 1-3 In this embodiment of the utility model, a grounding device for power plant commissioning includes a conductor end clamp 1, a grounding wire 2, an insulating rod 3, and an insulating sleeve 4. The grounding wire 2 is bolted to one side of the conductor end clamp 1. The insulating sleeve 4 is wrapped around the bottom outside of the insulating rod 3. A quick-clamp assembly 5 is provided inside the conductor end clamp 1. The quick-clamp assembly 5 is used to clamp and fix the conductor end clamp 1 to the conductor to be grounded.
[0035] The top of the insulating rod 3 is provided with an anti-loosening component 6 extending to the inside of the conductor end clamp 1. The anti-loosening component 6 includes a reinforcement unit and a linkage unit.
[0036] The reinforcement unit is used to reinforce the clamping state of the quick-clamp assembly 5;
[0037] The linkage unit is used to simultaneously drive the quick-clamp assembly 5 to release the clamping of the conductor to be grounded when the reinforcement unit releases the reinforcement of the quick-clamp assembly 5.
[0038] The quick-clamp assembly 5 includes a horizontal clamping plate 501, a telescopic guide rod 502, and a spring 503;
[0039] The horizontal clamp 501 is vertically slidably installed inside the conductor end clamp 1 and is in contact with the top of the inner wall of the conductor end clamp 1;
[0040] The telescopic guide rod 502 is fixed to the bottom of the horizontal clamp 501 and close to the opening of the conductor end clamp 1. The bottom of the telescopic guide rod 502 passes through the bottom of the conductor end clamp 1 and is vertically slidably connected to the conductor end clamp 1. The spring 503 is sleeved on the outside of the telescopic guide rod 502 and is located between the bottom of the horizontal clamp 501 and the bottom of the inner wall of the conductor end clamp 1, and is used to continuously provide an upward pushing force to the horizontal clamp 501.
[0041] By aligning the notch between the horizontal clamp 501 and the top of the conductor end clamp 1 with the conductor to be grounded and fitting them together, the clamping operation with the conductor to be grounded is achieved. The top of the inner wall of the conductor end clamp 1 near the opening has an arc-shaped structure, and the top of the horizontal clamp 501 near the opening of the conductor end clamp 1 also has an arc-shaped structure.
[0042] The reinforcement unit includes a screw 601 and a clamping block 602;
[0043] The screw 601 is fixed to the top of the insulating rod 3. The screw 601 passes through the bottom of the conductor end clamp 1 to the inside of the conductor end clamp 1 and is rotatably connected to the clamping block 602. The screw 601 and the conductor end clamp 1 are threaded together.
[0044] The clamping blocks 602 are distributed directly below the horizontal clamping plate 501. The clamping blocks 602 move upward to press the horizontal clamping plate 501 to achieve a stable clamping state of the horizontal clamping plate 501.
[0045] The linkage unit includes a connecting block 603 and a T-shaped column 604;
[0046] The connecting block 603 is fixed to the side of the clamping block 602, the T-shaped column 604 is fixed to the top of the connecting block 603, and the side of the horizontal clamping plate 501 is fixed with a linkage sleeve 504 that slides with the vertical rod of the T-shaped column 604.
[0047] The clamping block 602 moves down and pulls the horizontal clamping plate 501 and the linkage sliding sleeve 504 down as a whole through the top protrusion of the T-shaped column 604, which is used to release the clamping state of the horizontal clamping plate 501.
[0048] In this embodiment, it should be noted that the other end of the grounding wire 2 is connected to the grounding terminal clamp for clamping connection with the grounding bar, grounding stake, or frame. The method of using this grounding device is as follows:
[0049] The horizontal clamp 501 is initially in contact with the top of the inner wall of the conductor end clamp 1, and the clamping block 602 is positioned between the horizontal clamp 501 and the bottom of the inner wall of the conductor end clamp 1, without contacting either of them (e.g., Figure 2 When in use, the operator holds the insulating sleeve 4 and aligns the arc-shaped notch between the horizontal clamp 501 and the conductor end clamp 1 with the conductor to be grounded and puts it on. The horizontal clamp 501 moves under the pressure from the conductor to be grounded and further compresses the spring 503.
[0050] Finally, the conductor to be grounded is located between the top of the horizontal clamp 501 and the top of the inner wall of the conductor end clamp 1. The spring 503 provides a pushing force to the horizontal clamp 501 to clamp the conductor to be grounded, thus completing the connection operation with the conductor to be grounded.
[0051] Subsequently, to prevent loosening and detachment, the insulating rod 3 can be rotated. The insulating rod 3 drives the screw 601 to rotate. With the threaded structure of the conductor end clamp 1, the screw 601 pushes the clamping block 602 to move towards the horizontal clamp 501 and finally fits tightly against the lower surface of the horizontal clamp 501. This can strengthen the clamping state of the horizontal clamp 501 and further improve the stability of the device.
[0052] After the equipment is debugged, rotate the insulating rod 3 in the reverse direction, which will cause the screw 601 and the clamping block 602 to move away from the horizontal clamping plate 501 as a whole, releasing the clamping on the horizontal clamping plate 501. At the same time, the clamping block 602 will drive the T-shaped column 604 to move down. When the top protrusion of the T-shaped column 604 contacts the upper surface of the linkage sliding sleeve 504, the clamping block 602 will continue to move down, which will give the horizontal clamping plate 501 a downward pulling force, causing the horizontal clamping plate 501 to move down synchronously, thereby releasing the clamping of the horizontal clamping plate 501 on the conductor to be grounded. At this time, the device can be easily separated from the conductor to be grounded.
[0053] Please refer to this carefully. Figures 2-3 Two sets of connecting blocks 603, T-shaped posts 604 are symmetrically arranged, and the connecting blocks 603, T-shaped posts 604 are far away from the opening of the conductor end clamp 1.
[0054] The end face of the horizontal clamp 501 and the clamping block 602 away from the telescopic guide rod 502 is in contact with the inner wall end face of the conductor end clamp 1.
[0055] In this embodiment: the above-described structure enables the horizontal clamping plate 501 and the clamping block 602 to maintain a stable horizontal movement.
[0056] Meanwhile, the connecting block 603, T-shaped post 604, and T-shaped post 604 will not affect the clamping operation of the horizontal clamping plate 501 and the conductor to be grounded.
[0057] 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 power plant commissioning, comprising a conductor end clamp (1), a grounding wire (2), an insulating rod (3), and an insulating sleeve (4), wherein the grounding wire (2) is bolted to one side of the conductor end clamp (1), and the insulating sleeve (4) is wrapped around the bottom outer side of the insulating rod (3), characterized in that, The conductor end clamp (1) is provided with a quick clamp assembly (5) inside, which is used to clamp and fix the conductor end clamp (1) to the conductor to be grounded; The top of the insulating rod (3) is provided with an anti-loosening component (6) extending to the inside of the conductor end clamp (1). The anti-loosening component (6) includes a reinforcement unit and a linkage unit. The reinforcement unit is used to reinforce the clamping state of the quick-clamp assembly (5); The linkage unit is used to simultaneously drive the quick clamp assembly (5) to release the clamping of the conductor to be grounded when the reinforcement unit releases the reinforcement of the quick clamp assembly (5).
2. The grounding device for power plant commissioning according to claim 1, characterized in that, The quick clamp assembly (5) includes a horizontal clamping plate (501), a telescopic guide rod (502), and a spring (503); The horizontal clamp (501) is vertically slidably installed inside the conductor end clamp (1) and is in contact with the top of the inner wall of the conductor end clamp (1); The telescopic guide rod (502) is fixed to the bottom of the horizontal clamp (501) and close to the opening of the conductor end clamp (1). The bottom of the telescopic guide rod (502) passes through the bottom of the conductor end clamp (1) and is vertically slidably connected to the conductor end clamp (1). The spring (503) is sleeved on the outside of the telescopic guide rod (502) and located between the bottom of the horizontal clamp (501) and the bottom of the inner wall of the conductor end clamp (1), and is used to continuously provide an upward thrust to the horizontal clamp (501). By aligning the notch between the horizontal clamp (501) and the top of the conductor end clamp (1) with the conductor to be grounded and fitting them together, the clamping operation with the conductor to be grounded is achieved.
3. A grounding device for power plant commissioning according to claim 2, characterized in that, The top of the inner wall of the conductor end clamp (1) near the opening has an arc-shaped structure, and the top of the horizontal clamp (501) near the opening of the conductor end clamp (1) also has an arc-shaped structure.
4. A grounding device for power plant commissioning according to claim 2, characterized in that, The reinforcement unit includes a screw (601) and a clamping block (602); The screw (601) is fixed to the top of the insulating rod (3). The screw (601) passes through the conductor end clamp (1) from the bottom to the inside of the conductor end clamp (1) and is rotatably connected to the clamping block (602). The screw (601) and the conductor end clamp (1) are threaded together. The clamping block (602) is located directly below the horizontal clamping plate (501). The clamping block (602) moves upward to press the horizontal clamping plate (501) to stabilize the clamping state of the horizontal clamping plate (501).
5. A grounding device for power plant commissioning according to claim 4, characterized in that, The linkage unit includes a connecting block (603) and a T-shaped column (604). The connecting block (603) is fixed to the side of the clamping block (602), the T-shaped column (604) is fixed to the top of the connecting block (603), and the side of the horizontal clamping plate (501) is fixed with a linkage sleeve (504) that is slidably connected to the vertical rod of the T-shaped column (604). The pressing block (602) moves down and pulls the horizontal clamping plate (501) and the linkage sliding sleeve (504) down as a whole through the top protrusion of the T-shaped column (604) to release the clamping state of the horizontal clamping plate (501).
6. A grounding device for power plant commissioning according to claim 5, characterized in that, The connecting block (603), T-shaped post (604), and T-shaped post (604) are symmetrically arranged in two sets, and the connecting block (603), T-shaped post (604), and T-shaped post (604) are far away from the opening of the conductor end clamp (1); The horizontal clamp (501) and the pressing block (602) have their ends away from the telescopic guide rod (502) and are in contact with the inner wall end face of the conductor end clamp (1).