CN221100900U

CN221100900U - Special wiring tool for testing GIS/HGIS switch loop resistance

Info

Publication number: CN221100900U
Application number: CN202322686790.0U
Authority: CN
Inventors: 张新林; 陆兆敬; 林海科; 梁灵机; 胡敏炎; 叶卓; 刘俊华; 闫月宁; 杨润泽
Original assignee: Guangdong Power Grid Co Ltd; Yunfu Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Yunfu Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2024-06-07
Anticipated expiration: 2033-10-08

Abstract

The application discloses a special wiring tool for testing GIS/HGIS switch loop resistance, which comprises: a power-on screw and a terminal; the power-on screw is provided with a first current conducting part and a first voltage conducting part; the terminal is provided with a second current conducting part and a second voltage conducting part; the end screw thread is connected with one end of the power connection screw; the first current conducting part is electrically connected with the second current conducting part; the first voltage conducting part is electrically connected with the second voltage conducting part; the other end of the power connection screw is used for connecting GIS/HGIS equipment. When the wiring tool provided by the application is used for connecting GIS/HGIS equipment, the electric connection screw is connected with the screw hole at the connection part of the loop circuit test wire of the GIS/HGIS equipment; compared with the existing wiring mode after connection, the method can improve the current passing capability of the contact point, reduce the risk of discharge burning, and effectively solve the problem that the existing wiring mode for the GIS/HGIS switch circuit has safety risk.

Description

Special wiring tool for testing GIS/HGIS switch loop resistance

Technical Field

The application relates to the technical field of wiring tools, in particular to a special wiring tool for testing GIS/HGIS switch loop resistance.

Background

When GIS/HGIS (HGIS/HGIS) equipment performs switch loop resistance test, because the switch of the GIS/HGIS (HGIS/HGIS) equipment is sealed in the metal shell, the switch cannot be directly connected with the loop resistance test wire at two ends of the switch like an open switch, but the grounding knife switch connecting sheets at two sides of the switch are needed to be utilized; when wiring, the grounding disconnecting link connecting piece on one side of the switch is required to be detached, a screw is screwed in as a connecting position, and then the screw is clamped by a wire clamp.

Because the part of the screwed screw extending out is generally only enough to clamp one current wire clamp, the voltage wire clamp is not clamped in place, so that a worker needs to manually press the exposed part of the metal of the disconnecting link to obtain the voltage at two sides of the switch, and the risk of personal electric shock exists; meanwhile, the current clamp is clamped at the nut, the contact area is small, for larger current not lower than 100A, the current passing capability of the contact point is limited, the discharge burning danger is easy to cause at the position, an instrument is possibly further damaged, the wire clamp is also easy to damage, and even the tested switch is damaged.

Disclosure of utility model

Therefore, the application aims to provide a special wiring tool for testing the resistance of a GIS/HGIS switch loop, which is used for solving the problem that the existing wiring mode of the GIS/HGIS switch loop has safety risks.

In order to achieve the technical purpose, the application provides a special wiring tool for testing the resistance of a GIS/HGIS switch loop, which comprises the following components: a power-on screw and a terminal;

the power-on screw is provided with a first current conducting part and a first voltage conducting part;

the end is provided with a second current conducting part and a second voltage conducting part;

the end head is in threaded connection with one end of the power-on screw;

The first current conducting part is electrically connected with the second current conducting part;

the first voltage conducting part is electrically connected with the second voltage conducting part;

the other end of the power connection screw is used for being connected with GIS/HGIS equipment.

Further, the tip includes: a fixed hardware fitting and a movable nut;

The movable nut is rotatably connected with the fixed fitting and is electrically connected with the fixed fitting;

The movable nut is in threaded connection with one end of the power-on screw.

Further, the power connection screw includes: an inner column and an outer column;

The outer column is sleeved outside the inner column and is connected with the inner column in an insulating manner;

the outer column and the inner column are respectively used as a first current conducting part and a first voltage conducting part;

the movable nut is electrically connected with the outer column;

the fixing hardware fitting is electrically connected with the inner column;

The fixed fitting and the movable nut are respectively used as a second current conducting part and a second voltage conducting part.

Further, the fixed hardware fitting is electrically connected with an electric connection column;

The electric connection column is inserted into the inner column and electrically connected with the inner column.

Further, the inner column and the outer column are connected in an insulating way through an insulating filler;

The fixed fitting is connected with the movable nut in an insulating way through an insulating filler.

According to the technical scheme, the application provides a special wiring tool for testing the resistance of a GIS/HGIS switch loop, which comprises the following components: a power-on screw and a terminal; the power-on screw is provided with a first current conducting part and a first voltage conducting part; the end is provided with a second current conducting part and a second voltage conducting part; the end head is in threaded connection with one end of the power-on screw; the first current conducting part is electrically connected with the second current conducting part; the first voltage conducting part is electrically connected with the second voltage conducting part; the other end of the power connection screw is used for being connected with GIS/HGIS equipment.

When the wiring tool provided by the application is used for connecting GIS/HGIS equipment, the electric connection screw is connected with the screw hole at the connection part of the loop circuit test wire of the GIS/HGIS equipment; after connection, compared with the existing wiring mode, the current capacity of the contact point can be effectively improved, the risk of discharge burning is reduced, and the problem that the existing wiring mode of the GIS/HGIS switch circuit has safety risks is effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a dedicated wiring tool for testing the resistance of a GIS/HGIS switch circuit according to an embodiment of the present application;

fig. 2 is a cross-sectional view of a special wiring tool for testing the resistance of a GIS/HGIS switch circuit according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments disclosed in the specification without making any inventive effort, are intended to be within the scope of the application as claimed.

In the description of the embodiments of the present application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.

Referring to fig. 1, a special wiring tool for testing a loop resistance of a GIS/HGIS switch according to an embodiment of the present application includes: a power-on screw 10 and a tip 20; the power-on screw 10 is provided with a first current conducting part and a first voltage conducting part; the terminal 20 is provided with a second current conducting part and a second voltage conducting part; the end head 20 is in threaded connection with one end of the power-on screw 10; the first current conducting part is electrically connected with the second current conducting part; the first voltage conducting part is electrically connected with the second voltage conducting part; the other end of the power connection screw 10 is used for connecting GIS/HGIS equipment.

Specifically, the second current conducting portion is electrically connected to the current line, and the second voltage conducting portion is connected to the voltage line. After the terminal 20 is connected to the power connection screw 100, the first current conducting portion is electrically connected to the current line, and the first voltage conducting portion is electrically connected to the voltage line.

In practical application, when the connection tool is connected with the connection part of the switch loop test wire of the GIS/HGIS equipment, the electric connection screw 10 is screwed into the connection part of the loop test wire clamp, after the electric connection screw 10 is connected with the GIS/HGIS equipment, the first current conducting part and the first voltage conducting part can be respectively used for measuring the current and the voltage of the switch loop test wire of the GIS/HGIS equipment, and a worker does not need to hold the voltage or the current wire head, so that the risk of electric shock of the worker can be avoided, and the connection of the GIS/HGIS equipment through the electric connection screw 10 can effectively improve the current capacity of the connection part, reduce the risk of discharge burning, and also avoid the abrasion of the metal surface rust-proof plating on the grounding knife gate in the existing wire clamp connection mode.

In a more specific embodiment, tip 20 includes: a fixed fitting 21 and a movable nut 22; the movable nut 22 is rotatably connected with the fixed fitting 21 and is electrically connected with the fixed fitting 21; the movable nut 22 is screwed to one end of the power screw 10.

When connecting the power connection screw 10 and the terminal 20, since the terminal 20 is connected with a current line and a voltage line, turning the terminal 20 easily causes line winding. For this purpose, in the present embodiment, a rotatable movable nut 22 is provided on the fixed fitting 21 of the tip 20; when connecting the end 20 and the power connection screw 10, the movable nut 22 is rotated to complete the threaded connection of the end 21 and the power connection screw 10, and the fixing hardware 21 is not required to be rotated.

Correspondingly, after the power connection screw 10 is connected with the end 20, when the ground connection screw 10 is in threaded connection with the GIS/HGIS device, the movable nut 22 is turned to drive the power connection screw 10 to rotate.

Wherein the movable nut 22 can be connected with the fixed fitting 21 through a ball so as to realize rotatable connection of the movable nut and the fixed fitting.

In another embodiment, the power screw 10 includes: an inner column 11 and an outer column 12; the outer column 12 is sleeved outside the inner column 11 and is connected with the inner column 11 in an insulating manner; the outer column 12 and the inner column 11 serve as a first current conducting portion and a first voltage conducting portion, respectively; the movable nut 22 is electrically connected with the outer column 12; the fixing hardware fitting 21 is electrically connected with the inner column 11; the fixed fitting 21 and the movable nut 22 serve as a second current conducting portion and a second voltage conducting portion, respectively.

After the power-on screw 10 is connected with the GIS/HGIS equipment, the inner column 11 and the outer column 12 are electrically connected with the GIS/HGIS equipment; the inner column 11 may be T-shaped, so that the outer column 12 is located at both sides of the inner column 11, and the outer column 12 and the inner column 11 are conveniently and simultaneously electrically connected to the GIS/HGIS apparatus.

In a more specific embodiment, the fixing fitting 21 is electrically connected with an electrical connection post 23; the electrical connection post 23 is inserted into the inner post 11 to electrically connect the inner post 11. That is, the fixing fitting 21 is electrically connected to the inner post 11 through the electrical connection post 23.

Correspondingly, the top of the inner post 11 is provided with a mounting hole into which the power supply post 23 is inserted.

Further, the inner column 11 and the outer column 12 are connected in an insulating manner through an insulating filler 30; the fixed fitting 21 is connected with the movable nut 22 in an insulating way through an insulating filler 30.

Through the wiring tool provided by the implementation, a water pipe joint type wiring method can be adopted, the test can be started after the power connection screw 10 is screwed, the large current through-flow capacity exceeding 100A is fully considered, the test data are not random any more, and the actual value can be obtained through one-time test. The probability that the lead wire clamp is clamped in the grounding knife screw hole and possibly leads to local damage of the internal thread, and then lead to the internal thread sliding tooth to recover the grounding connection piece can be avoided, the voltage is not needed to be taken by the hand-held voltage head part, and the risk of electric shock of a person is avoided.

While the utility model has been described in detail with reference to the examples, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the utility model may be modified or equivalents may be substituted for elements thereof, and that any modifications, equivalents, improvements or changes will fall within the spirit and principles of the utility model.

Claims

1. A GIS/HGIS switch circuit resistance test special wiring tool is characterized by comprising: a power-on screw (10) and a tip (20);

The power-on screw (10) is provided with a first current conducting part and a first voltage conducting part;

the end head (20) is provided with a second current conducting part and a second voltage conducting part;

the end head (20) is in threaded connection with one end of the power-on screw (10);

The other end of the power connection screw (10) is used for being connected with GIS/HGIS equipment.

2. The GIS/HGIS switch loop resistance test dedicated wiring tool according to claim 1, wherein the tip (20) comprises: a fixed fitting (21) and a movable nut (22);

The movable nut (22) is rotatably connected with the fixed fitting (21) and is electrically connected with the fixed fitting (21);

the movable nut (22) is in threaded connection with one end of the power-on screw (10).

3. The GIS/HGIS switch loop resistance test dedicated wiring tool according to claim 2, wherein the power screw (10) comprises: an inner column (11) and an outer column (12);

The outer column (12) is sleeved outside the inner column (11) in an insulating manner;

the outer column (12) and the inner column (11) are respectively used as a first current conducting part and a first voltage conducting part;

The movable nut (22) is electrically connected with the outer column (12);

the fixing hardware fitting (21) is electrically connected with the inner column (11);

The fixed fitting (21) and the movable nut (22) are respectively used as a second current conducting part and a second voltage conducting part.

4. A special wiring tool for testing the resistance of a GIS/HGIS switch circuit according to claim 3, wherein the fixing hardware tool (21) is electrically connected with an electric connection column (23);

The electric connection column (23) is inserted into the inner column (11) to electrically connect the inner column (11).

5. A special wiring tool for testing the resistance of a GIS/HGIS switch circuit according to claim 3, wherein the inner column (11) and the outer column (12) are connected in an insulating way through an insulating filler (30);

the fixed fitting (21) is connected with the movable nut (22) in an insulating way through an insulating filler (30).