CN217427661U

CN217427661U - Low-resistance grounding protection device

Info

Publication number: CN217427661U
Application number: CN202220331637.9U
Authority: CN
Inventors: 周明; 史长杰
Original assignee: Wuxi Yaming Electric Power Engineering Technology Co ltd
Current assignee: Wuxi Yaming Electric Power Engineering Technology Co ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-09-13
Anticipated expiration: 2032-02-18

Abstract

The utility model relates to an electric power ground protection technical field, in particular to ground protection device that resistance is low, include insulating casing, ground connection module and connect the module, insulating casing is square casing, ground connection module vertical direction sets up insulating casing's inside, ground connection module is the ground wire external tapping, first terminal, intermediate conductor, second terminal and the ground resistance connecting wire that connect gradually respectively from top to bottom at the vertical direction, it is in to connect the module vertical direction setting insulating casing's inside, connect the module and be first response subassembly, reposition of redundant personnel conductor and the second response subassembly that connects gradually respectively from top to bottom at the vertical direction, first response subassembly with first terminal connection, second response subassembly with second terminal connection.

Description

Low-resistance grounding protection device

Technical Field

The utility model relates to an electric power ground protection technical field, in particular to ground protection device that resistance is low.

Background

The protective grounding is grounding for preventing the safety of people and equipment from being endangered by electrification of metal shells of electrical devices, frameworks of power distribution devices, line towers and the like. The protection grounding is a protection wiring mode for reliably connecting an electric appliance metal part (namely a metal structure part insulated from a charged part) which is not charged normally and can be charged after an insulating material is damaged or under other conditions with a grounding body by using a lead.

The ground protection device is a general name of a ground resistor buried underground and a connecting wire from the ground resistor to equipment, the traditional ground protection device is composed of a ground resistor and an electric wire, the ground resistor is preset underground, the resistance value of the ground resistor cannot be changed randomly, and the traditional ground protection device is easy to damage and fail along with the time increase and the large current accident condition.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a ground protection device that resistance is low to solve the problem that above-mentioned prior art exists.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a ground protection device that resistance is low, includes insulating casing, ground module and connects the module, insulating casing is square casing, ground module vertical direction sets up insulating casing's inside, ground module is the ground wire external tapping, first terminal, intermediate conductor, second terminal and the ground resistance connecting wire that connects gradually respectively from top to bottom at the vertical direction, it is in to connect the module vertical direction setting insulating casing's inside, connect the module respectively for first response subassembly, reposition of redundant personnel conductor and the second response subassembly that connects gradually from top to bottom at the vertical direction, first response subassembly with first wiring terminal connection, second response subassembly with second wiring terminal connection.

In a further embodiment, the first sensing assembly and the second sensing assembly are both coil sensing devices, the first sensing assembly and the second sensing assembly are used for monitoring the voltage of the grounding module and connecting the shunt conductor and the middle conductor in parallel, the first sensing assembly is fixedly mounted on the first binding post, and the second sensing assembly is fixedly mounted on the second binding post.

In a further embodiment, the first sensing assembly and the second sensing assembly are both provided with a dc contactor, a sensing terminal of the dc contactor of the first sensing assembly is electrically connected with the first terminal and the second terminal through an electric wire, respectively, and a sensing terminal of the dc contactor of the second sensing assembly is electrically connected with the first terminal and the second terminal through an electric wire, respectively.

In a further embodiment, a first lead through hole is formed in the top of the insulating housing, the ground wire external lead penetrates through the first lead through hole and extends to the outside of the insulating housing, a butt joint is arranged at one end, located at the outside of the insulating housing, of the ground wire external lead, a second lead through hole is formed in the bottom of the insulating housing, the ground resistor connecting wire penetrates through the second lead through hole and extends to the outside of the insulating housing, and one end, located at the outside of the insulating housing, of the ground resistor connecting wire is connected with the ground resistor.

In a further embodiment, an insulating bracket is fixedly mounted on each of the inner top and the inner bottom of the insulating housing, and the insulating bracket is used for fixing the grounding module and the parallel connection module.

In a further embodiment, a protective layer is arranged inside the insulating shell, and the protective layer is made of demagnetizing materials.

To sum up, the utility model discloses following beneficial effect has:

1. the utility model discloses a grounding module vertical direction sets up insulating casing's inside, it is in to connect the module vertical direction setting insulating casing's inside, first response subassembly with first terminal connection, the second response subassembly with second terminal connection's setting can play and connect the electric current that module response grounding module circulated, and when the electric current was too big, it is connected with grounding module parallel connection to connect the module, realizes the reposition of redundant personnel and reduces the effect of resistance.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure, 1, an insulating shell; 2. a grounding module; 21. the ground wire is externally connected; 22. a first terminal; 23. a middle conductor; 24. a second terminal; 25. a grounding resistance connecting wire; 3. connecting the modules in parallel; 31. a first sensing assembly; 32. a shunt conductor; 33. a second sensing assembly.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in fig. 1, the terms "bottom" and "top", "inner" and "outer" refer to directions toward and away from a particular component geometry, respectively, and the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "plurality" means two or more unless the direction of the center is specifically defined otherwise.

Example 1:

as shown in fig. 1, a ground protection device with low resistance, including an insulating housing 1, a ground module 2 and a connection module 3, the insulating housing 1 is a square shell, the vertical direction of the ground module 2 is set inside the insulating housing 1, the ground module 2 is a ground wire external connection 21, a first terminal 22, an intermediate conductor 23, a second terminal 24 and a ground resistance connection wire 25 which are connected in sequence from top to bottom in the vertical direction, the connection module 3 is set inside the insulating housing 1 in the vertical direction, the connection module 3 is a first sensing assembly 31, a shunt conductor 32 and a second sensing assembly 33 which are connected in sequence from top to bottom in the vertical direction, the first sensing assembly 31 is connected with the first terminal 22, and the second sensing assembly 33 is connected with the second terminal 24.

Further, the first sensing assembly 31 and the second sensing assembly 33 are both coil sensing devices, the first sensing assembly 31 and the second sensing assembly 33 are used for monitoring the voltage of the grounding module 2 and connecting the shunt conductor 32 and the intermediate conductor 23 in parallel, the first sensing assembly 31 is fixedly installed on the first binding post 22, and the second sensing assembly 33 is fixedly installed on the second binding post 24.

Further, the first sensing assembly 31 and the second sensing assembly 33 are both provided with a dc contactor, a sensing terminal of the dc contactor of the first sensing assembly 31 is electrically connected with the first terminal 22 and the second terminal 24 through an electric wire, and a sensing terminal of the dc contactor of the second sensing assembly 33 is electrically connected with the first terminal 22 and the second terminal 24 through an electric wire.

Further, a first wire through hole is formed in the top of the insulating shell 1, the ground wire external connection wire 21 penetrates through the first wire through hole and extends to the outside of the insulating shell 1, one end, located at the outside of the insulating shell 1, of the ground wire external connection wire 21 is provided with a butt joint, a second wire through hole is formed in the bottom of the insulating shell 1, the ground resistor connection wire 25 penetrates through the second wire through hole and extends to the outside of the insulating shell 1, and one end, located at the outside of the insulating shell 1, of the ground resistor connection wire 25 is connected with the ground resistor.

Furthermore, the inner top and the inner bottom of the insulating shell 1 are fixedly provided with insulating supports, and the insulating supports are used for fixing the grounding module 2 and the parallel connection module 3.

Further, a protective layer is arranged inside the insulating shell 1 and made of demagnetizing materials.

In the embodiments of the present disclosure, the terms "mounting," "connecting," "fixing," and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the embodiments disclosed in the present invention can be understood by those skilled in the art according to specific situations.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a ground protection device that resistance is low, includes insulating casing (1), ground module (2) and connects module (3), its characterized in that: insulating casing (1) is square casing, ground module (2) vertical direction sets up the inside of insulating casing (1), ground module (2) from top to bottom is the ground wire external tapping (21), first terminal (22), intermediate conductor (23), second terminal (24) and ground resistance connecting wire (25) that connect gradually respectively at the vertical direction, and connect module (3) vertical direction sets up the inside of insulating casing (1), connect module (3) from top to bottom is first response subassembly (31), reposition of redundant personnel conductor (32) and second response subassembly (33) that connect gradually respectively, first response subassembly (31) with first terminal (22) are connected, second response subassembly (33) with second terminal (24) are connected.

2. A low resistance earth fault protection device as claimed in claim 1, wherein: first response subassembly (31) and second response subassembly (33) are coil induction device, first response subassembly (31) and second response subassembly (33) are used for monitoring the voltage of ground module (2) with will shunt conductor (32) with intermediate conductor (23) parallel connection, first response subassembly (31) fixed mounting be in on first terminal (22), second response subassembly (33) fixed mounting be in on second terminal (24).

3. A low resistance earth fault protection device as claimed in claim 2, wherein: first response subassembly (31) and second response subassembly (33) all are provided with direct current contactor, the response wiring end of the direct current contactor of first response subassembly (31) pass through the electric wire respectively with first terminal (22) and second terminal (24) electric connection, the response wiring end of the direct current contactor of second response subassembly (33) pass through the electric wire respectively with first terminal (22) and second terminal (24) electric connection.

4. A low resistance earth fault protection device as claimed in claim 1, wherein: the ground wire structure is characterized in that a first wire through hole is formed in the top of the insulating shell (1), a ground wire external connection wire (21) penetrates through the first wire through hole and extends to the outside of the insulating shell (1), a butt joint is arranged at one end, located outside the insulating shell (1), of the ground wire external connection wire (21), a second wire through hole is formed in the bottom of the insulating shell (1), a ground resistor connection wire (25) penetrates through the second wire through hole and extends to the outside of the insulating shell (1), and the ground resistor connection wire (25) is located at one end, located outside the insulating shell (1), of the ground resistor connection wire and connected with a ground resistor.

5. A low resistance earth fault protection device as claimed in claim 1, wherein: the insulating top and the interior bottom of insulating casing (1) all fixed mounting have insulating support, insulating support is used for fixing ground module (2) and parallel connection module (3).

6. A low resistance earth fault protection device as claimed in claim 1, wherein: the inside of insulating casing (1) is provided with the protective layer, the protective layer is for the demagnetization material to make.