Internal and external grounding composite integrated grounding device
By designing a composite integrated grounding device for internal and external grounding, the problems of high cost of grounding materials and many connections are solved in the existing distribution box and ground grid connection, and more efficient construction and more stable electrical connection are achieved.
Patent Information
- Application Number
- CN202421663453.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-15
AI Technical Summary
The grounding materials connected to the existing distribution box and the ground grid are costly and have many connections, which leads to complex construction and difficult maintenance.
A composite integrated grounding device for internal and external grounding is designed. By setting up a grounding row on the inner wall of the distribution box, a packing box is installed at the bottom of the distribution box, and a unified connection between internal and external grounding is achieved through grounding columns, threads, bolts, wiring noses and grounding poles.
It effectively reduces the cost of grounding materials, simplifies the construction process, improves the efficiency of cable laying, and ensures the goodness of the overall metal grounding.
Smart Images
Figure CN223052577U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of grounding systems for offshore oil platforms and onshore petrochemical projects, and particularly relates to an internal and external grounding composite integrated grounding device. Background Art
[0002] Most distribution boxes in the outdoor area of offshore platforms are explosion-proof type: ExdIIBT4 IP56. In order to ensure the stable operation of the system, the platform power grid system is an IT small-current grounding system. To ensure the safety of operators' lives, high requirements are imposed on the insulation of the system and the continuity of the grounding system.
[0003] The existing technology for connecting distribution boxes to the ground grid requires the separation of internal and external grounding of the distribution box, and finally it must be aggregated into a single grounding grid. Since the protective shell of the distribution box needs to add a PE core to the main power cable throughout its length or newly add a grounding cable and gland separately on-site to lead out the grounding, the cost of grounding materials is high. At the same time, grounding construction will be carried out through mechanical crimping and welding, etc., which greatly increases the workload of operators. Moreover, there are many grounding connection points and branch points, and many maintenance points, making it difficult to ensure good electrical grounding connectivity. Content of the Utility Model
[0004] The purpose of the utility model is to provide an internal and external grounding composite integrated grounding device to solve the problems of high cost of grounding materials and many grounding connection points and branch points in the existing connection between distribution boxes and the ground grid.
[0005] To achieve the above purpose, the utility model provides the following technical solution: An internal and external grounding composite integrated grounding device, comprising: a distribution box, on one side of the inner wall of the distribution box, a terminal block is arranged, and a gland is installed at the bottom of the distribution box. A grounding bar is installed on one side of the inner wall of the distribution box. There is a grounding connection line between the terminal block and the grounding bar. A grounding column penetrates through the bottom of the distribution box. Threads are provided on the outer wall of the grounding column, and the grounding column is threadedly connected to the distribution box through the threads. Bolts are threadedly connected to the top and bottom of the grounding column, and terminal lugs are respectively arranged between one end of the bolts at the top and bottom of the grounding column and the grounding column. One of the terminal lugs is reliably connected to the grounding bar through a PE grounding wire, and the other terminal lug is reliably connected to the grounding electrode through a PE grounding connection line.
[0006] Preferably, tinfoil sheets are arranged at the top and bottom of the grounding column. One end of each of the two bolts penetrates through the tinfoil sheet, and the tinfoil sheet is in contact with the terminal lug.
[0007] Preferably, washers are penetrated through one end of each of the two bolts.
[0008] Preferably, a cable tie is provided outside the grounding connection wire, an outer sheath is provided on one side of the cable tie, and an inner sheath is provided on one side of the outer sheath.
[0009] Preferably, a lock nut is installed inside the bottom side of the distribution box, and the grounding post is threadedly connected to the lock nut through a thread.
[0010] Preferably, an insulating tube is provided outside the wiring.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] (1) By providing a grounding bar, a grounding post, a bolt, a thread, a wiring nose and a grounding electrode structure, the utility model effectively eliminates the hidden danger that the traditional internal grounding and external grounding are isolated by the box body, saves cable materials, makes the cable laying and installation on the construction site more convenient and fast, improves the cable laying efficiency, and at the same time makes the metal integral grounding good, improving the practicability of the device.
[0013] (2) By providing a tin foil sheet and a washer structure, the utility model ensures the reliable electrical connection of the grounding system by the tin foil method of the cable copper wire braided jumper combined with the pad, effectively preventing the loosening between the tin foil and the bolt, and improving the stability of the electrical connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a structural schematic diagram of the utility model;
[0015] Figure 2 is Figure 1 an enlarged view of part A of
[0016] In the figure: 1, distribution box; 2, stuffing box; 3, terminal block; 4, cable tie; 5, outer sheath; 6, grounding connection wire; 7, inner sheath; 8, grounding bar; 9, insulating tube; 10, grounding post; 11, bolt; 12, thread; 13, wiring nose; 14, tin foil sheet; 15, washer; 16, grounding electrode; 17, lock nut. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0018] Refer to Figure 1 - Figure 2As shown in the figure, the present utility model provides the following technical solution: an internal and external grounding composite integrated grounding device, comprising: a distribution box 1, a terminal block 3 is arranged on one side of the inner bottom plate of the distribution box 1, and a stuffing box 2 is installed at the bottom of the distribution box 1. A grounding bar 8 is installed on one side of the inner wall of the distribution box 1. A grounding connection wire 6 is connected between the terminal block 3 and the grounding bar 8. A grounding column 10 penetrates through the bottom of the distribution box 1. A thread 12 is arranged on the outer wall of the grounding column 10, and the grounding column 10 is threadedly connected to the distribution box 1 through the thread 12. Bolts 11 are threadedly connected to both the top and bottom of the grounding column 10, and a wiring nose 13 is arranged between one end of the bolts 11 and the top and bottom of the grounding column 10 respectively. One of the wiring noses 11 is reliably connected to the grounding bar 8 through a PE grounding wire, and the other wiring nose 11 is reliably connected to the grounding electrode (16) through a grounding body connection wire.
[0019] Through the above technical solution:
[0020] Specifically, during use, the grounding column 10 is connected through the thread 12 on its outside to penetrate the bottom of the distribution box 12, and then the wiring nose 13 is limited at the top and bottom of the wiring column 10 through bolts. The internal and external groundings of the distribution box 1 can be connected through the wiring nose 13 and the connection wire to the grounding electrode 16.
[0021] In the present utility model, a further implementation manner is provided. Refer to Figure 1 - Figure 2 , tinfoil sheets 14 are arranged at both the top and bottom of the grounding column 10. One end of each of the two bolts 11 penetrates through the tinfoil sheet 14, and the tinfoil sheet 14 is in contact with the wiring nose 13. One end of each of the two bolts 11 penetrates through a washer 15.
[0022] Through the above technical solution:
[0023] Specifically, during use, the reliable electrical connection of the grounding system is ensured by the cable copper wire braided jumper combined with the tinfoil 14 between the grounding column 10 and the bolt 11, and the loosening between the tinfoil 14 and the bolt 11 is effectively prevented by the washer 15.
[0024] Refer to Figure 1 - Figure 2 , a cable tie 4 is arranged outside the grounding connection wire 6. An outer sheath 5 is arranged on one side of the cable tie 4. An inner sheath 7 is arranged on one side of the outer sheath 5. A locknut 17 is installed inside the bottom side of the distribution box 2. The grounding column 10 is threadedly connected to the locknut 17 through the thread 12. An insulating tube 9 is arranged outside the grounding connection wire 6.
[0025] Through the above technical solution:
[0026] Specifically, by setting the cable tie 4, the outer sheath 5 and the inner sheath 6, it is convenient to organize the internal cable wiring of the distribution box 1. By setting the lock nut 17, the fixation and sealing between the grounding post 10 and the distribution box 1 are improved. By setting the insulating tube 9, it is convenient to ensure the safety of the operator when inspecting the grounding connection wire 6.
[0027] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.
[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An internal and external grounding composite integrated grounding device, characterized in that: include: A distribution box (1), wherein a terminal block (3) is arranged on the inner bottom plate side of the distribution box (1), and a stuffing box (2) is installed at the bottom of the distribution box (1); a grounding bar (8) is installed on one side of the inner wall of the distribution box (1); a grounding connection line (6) is connected between the terminal block (3) and the grounding bar (8); a grounding column (10) passes through the bottom of the distribution box (1); a thread (12) is arranged on the outer wall of the grounding column (10), and the grounding column (10) is threadedly connected to the distribution box (1) through the thread (12); a bolt (11) is threadedly connected to the top and bottom of the grounding column (10), and a wiring nose (13) is arranged between the top and bottom of the grounding column (10) and one end of the bolt (11), respectively; one of the wiring noses (11) is reliably connected to the grounding bar (8) through a PE grounding wire, and the other wiring nose (11) is reliably connected to the grounding electrode (16) through a grounding body connection line.
2. The internal and external grounding composite integrated grounding device according to claim 1, characterized in that: Tin foil sheets (14) are provided at the top and bottom of the grounding column (10), one end of each of the two bolts (11) passes through the tin foil sheets (14), and the tin foil sheets (14) and the wiring nose (13) are in contact with each other.
3. The internal and external grounding composite integrated grounding device according to claim 1, characterized in that: A washer (15) is passed through one end of each of the two bolts (11).
4. The internal and external grounding composite integrated grounding device according to claim 1, characterized in that: A cable tie (4) is arranged outside the ground connection line (6), an outer sheath (5) is arranged on one side of the cable tie (4), and an inner sheath (7) is arranged on one side of the outer sheath (5).
5. The internal and external grounding composite integrated grounding device according to claim 1, characterized in that: A lock nut (17) is installed inside the bottom side of the distribution box (2), and the grounding column (10) is threadedly connected to the lock nut (17) via a thread (12).
6. The internal and external grounding composite integrated grounding device according to claim 1, characterized in that: An insulating tube (9) is arranged outside the wiring (6).