CN219164159U

CN219164159U - Cross-region equipotential connection box between different grounding grids

Info

Publication number: CN219164159U
Application number: CN202320104950.3U
Authority: CN
Inventors: 黄会忠; 刘昌恩; 黄佳荣
Original assignee: Zhejiang Huadian Lightning Protection Technology Co ltd
Current assignee: Zhejiang Huadian Lightning Protection Technology Co ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-06-09
Anticipated expiration: 2033-02-03

Abstract

The utility model provides a cross-region equipotential connection box between different grounding grids, which comprises two seat boards correspondingly arranged in the box body, wherein a connecting body is arranged between the two seat boards, an anode block is arranged in the middle of the connecting body, and an insulating terminal is arranged between each seat board and the connecting body; the seat board is horizontally provided with a connecting long groove, two ends of the connecting body are respectively provided with a fixing hole, and the connecting body is connected with a grounding wire; the seat board is U-shaped and comprises a connecting part and fixing parts at two sides of the connecting part. The utility model has simple structure and reasonable design, the connecting body is arranged between the two seat boards through the insulating terminal, the anode block is arranged in the middle of the connecting body, the problem of electrochemical corrosion between the two grounding grids made of different materials due to potential difference is effectively solved, the connection of equipotential is realized through the anode block in the middle of the connecting body, the potential difference influence between the two grounding grids is eliminated when the self potential is consumed by utilizing the weight owned by the sacrificial anode block, the connection safety is ensured, and the requirement of durability is met.

Description

Cross-region equipotential connection box between different grounding grids

Technical Field

The utility model belongs to the technical field of grounding grid facilities, and particularly relates to a trans-regional equipotential connection box between different grounding grids.

Background

The equipotential box is widely applied to general industry and civil buildings, the impedance of a human body is greatly reduced after skin is wetted, and electric shock casualties can be caused by voltage of more than ten volts. The equipotential case is formed by connecting various metal pipelines, sockets and the like to the terminal board, so as to protect the safety of people and equipment. However, in the prior art, in the scheme of coupling between grounding grids made of different materials, a coupling means for eliminating electrochemical corrosion is lacking, for example, when different grounding materials are adopted in new and old project areas, such as copper-clad steel and zinc-clad steel, copper-clad steel and hot galvanizing, and the like, the copper-clad steel and zinc-clad steel cannot be well co-connected together, and uniform grounding bodies are difficult to realize. There is therefore a need for improvement.

Disclosure of Invention

In view of the above, the utility model aims to overcome the defects in the prior art and provides a trans-regional equipotential connection box between different grounding grids.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the cross-region equipotential connection box comprises two seat boards which are correspondingly arranged in the box body, wherein a connecting body is arranged between the two seat boards, an anode block is arranged in the middle of the connecting body, and an insulating terminal is arranged between each seat board and the connecting body;

the seat board is horizontally provided with a connecting long groove, two ends of the connecting body are respectively provided with a fixing hole, and the connecting body is connected with a grounding wire; the seat board is U-shaped and comprises a connecting part and fixing parts at two sides of the connecting part;

the insulation terminal comprises a base body, wherein a positioning table is arranged in the middle of the base body, a seat plate connecting hole is formed in one side end face of the base body, a connector fixing hole is formed in the other side end face of the base body, and the connector is fixed with the insulation terminal through a first locking piece arranged in the connector fixing hole; the insulated terminal is fixed with the seat board through a second locking piece arranged in the seat board connecting hole.

Further, the connector is made of galvanized flat steel.

Further, the first locking piece adopts a brass bolt or a hot galvanizing bolt, and the second locking piece adopts a brass bolt or a hot galvanizing bolt.

Further, the two ends of the matrix are cone-shaped, and the diameter of the cross section of the matrix gradually decreases from the positioning table to the two ends.

Further, the fixing part of the seat board is welded and fixed with the box body or is connected and fixed by adopting an insulator.

Further, the length of the connecting long groove is 20-30mm.

Further, the ground wire is fixed to the connector through a wire clamp.

Further, the length, width and height of the anode block are 200×150×125mm respectively.

Compared with the prior art, the utility model has the following advantages:

the utility model has simple structure and reasonable design, the connecting body is arranged between the two seat boards through the insulating terminal, the anode block is arranged in the middle of the connecting body, the problem of electrochemical corrosion between the grounding grids of two different materials due to potential difference is effectively solved, the connection of equipotential is realized through the anode block in the middle of the connecting body, the potential difference influence between the two grounding grids is eliminated when the self potential is consumed by utilizing the weight owned by the sacrificial anode block, the connection safety is ensured, the requirement of durability is met, and the lightning leakage and static leakage safety of the grounding grids are further ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute an undue limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the utility model when a seat plate is arranged on the box body;

FIG. 3 is a schematic view of a connection body with anode blocks according to the present utility model;

FIG. 4 is a schematic view of an insulated terminal according to the present utility model;

FIG. 5 is a schematic view of the connection between the connector and the seat plate in the present utility model;

FIG. 6 is a schematic view of an insulated terminal end positioning connector according to the present utility model;

fig. 7 is a schematic view of the anode block with a partition groove in the middle thereof according to an embodiment of the present utility model.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the utility model, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The cross-regional equipotential connection box between different grounding grids, as shown in fig. 1-7, comprises two seat boards 2 correspondingly installed in a box body 1, a connecting body 3 is installed between the two seat boards, an anode block 4 is arranged in the middle of the connecting body, and an insulating terminal 5 is arranged between each seat board and the connecting body. The seat board is horizontally provided with a connecting long groove 6, two ends of the connecting body are respectively provided with a fixing hole 7, and two sides of the anode block on the connecting body are respectively connected with a grounding wire 8; the seat board is U-shaped and comprises a connecting part 9 and fixing parts 10 on two sides of the connecting part.

The grounding wires at two sides of the anode block are respectively connected with grounding grids made of different materials, the anode block material is an intermediate of the electric potentials of the two grounding grid materials, and as an example, the anode block is made of zinc-aluminum alloy materials containing zinc, iron, copper and the like.

The insulated terminal comprises a base body with a positioning table 11 in the middle, a seat board connecting hole 12 is arranged on one side end surface of the base body, a connector fixing hole 13 is arranged on the other side end surface of the base body, and the connector is fixed with the insulated terminal through a first locking piece 14 arranged in the connector fixing hole; the insulated terminal is fixed with the seat board by a second locking piece 15 arranged in the seat board connecting hole. Positioning surfaces are respectively arranged on two sides of the positioning table and are used for being attached to the seat plate and the connecting body, so that good positioning is achieved. It should be noted that when the thicknesses of the seat plate and the connector are smaller, as shown in fig. 6, the end faces of the insulated terminals can be used to position the connector, that is, the seat plate and the connector are attached to the end faces of the two ends of the base body, and the seat plate and the connector are locked by corresponding locking members.

When the anode block is used as a sacrificial anode, for example, when the equipotential connection is carried out, the potential of copper is +0.35V, the potential of iron is-0.440V, the potential of aluminum is-1.67V, in practical application, if copper and iron are directly connected, serious electrochemical corrosion reaction can be generated, and the connection position of two metals is quickly corroded, so that the grounding grid is broken, and the lightning leakage current and static leakage current safety of the grounding grid are affected. In the application, the intermediate potential of the anode block is utilized to balance the potential difference between the two grounding grids of iron and copper, and the anode block consumes the self potential to protect the grounding materials connected with the two ends, so that the connection part of the two area grounding grids is protected. The weight of the sacrificial anode block can ensure that when the self potential is consumed, the sacrificial anode block can meet a certain service life, and cannot be corroded soon, so that the anode block is not replaced or less replaced in the service period, and the sacrificial anode block is convenient to maintain and safe in a grounding grid.

The connector is made of galvanized flat steel. The first locking piece adopts a brass bolt or a hot galvanizing bolt, and the second locking piece adopts a brass bolt or a hot galvanizing bolt. Generally, the ground wire is fixed on the connector through the wire clamp, and connection and disassembly are convenient. In addition, the anode block can be fixed on the connecting body through the connecting screw, and can be detached and replaced according to the requirement, so that the operation is very convenient. In an alternative embodiment, as shown in fig. 7, the middle part of the anode block is provided with a separation groove 16, the cross section of the separation groove is in an arc structure, and two split parts are respectively formed at two sides of the separation groove.

In an alternative embodiment, the two ends of the base body are tapered, the cross section diameter of the base body is gradually reduced from the positioning table to the two ends, and the connecting structure between the connecting body and the seat board is stable. Usually, the fixing part of the seat board is welded and fixed with the box body or is connected and fixed by adopting an insulator. For example, the length of the connecting long groove is 20-30mm, the length and width of the anode block are 200 x 150 x 125mm, and the length of the connecting body is 450mm, the width is 40mm, and the thickness is 4mm.

The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a cross regional equipotential connection case between different ground nets which characterized in that: the device comprises two seat boards correspondingly arranged in a box body, a connecting body is arranged between the two seat boards, an anode block is arranged in the middle of the connecting body, and an insulating terminal is arranged between each seat board and the connecting body;

2. A differential inter-ground-network cross-regional equipotential bonding set according to claim 1, wherein: the connector is made of galvanized flat steel.

3. A differential inter-ground-network cross-regional equipotential bonding set according to claim 1, wherein: the first locking piece adopts a brass bolt or a hot galvanizing bolt, and the second locking piece adopts a brass bolt or a hot galvanizing bolt.

4. A differential inter-ground-network cross-regional equipotential bonding set according to claim 1, wherein: the two ends of the matrix are conical, and the diameter of the cross section of the matrix gradually decreases from the positioning table to the two ends.

5. A differential inter-ground-network cross-regional equipotential bonding set according to claim 1, wherein: the fixing part of the seat board is welded and fixed with the box body or is connected and fixed by adopting an insulator.

6. A differential inter-ground-network cross-regional equipotential bonding set according to claim 1, wherein: the length of the connecting long groove is 20-30mm.

7. A differential inter-ground-network cross-regional equipotential bonding set according to claim 1, wherein: the grounding wire is fixed on the connector through a wire clamp.

8. A differential inter-ground-network cross-regional equipotential bonding set according to claim 1, wherein: the length, width and height of the anode block are respectively 200 x 150 x 125mm.

9. A differential inter-ground-network cross-regional equipotential bonding set according to claim 1, wherein: the anode block is made of zinc-aluminum alloy material.