CN216310206U

CN216310206U - Special test wire for GIS circuit breaker time characteristic test

Info

Publication number: CN216310206U
Application number: CN202120657353.4U
Authority: CN
Inventors: 饶蕾; 何强; 赵世海; 刘国建
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2022-04-15
Anticipated expiration: 2031-03-31

Abstract

The utility model provides a GIS circuit breaker time characteristic test special test line, includes the trunk test line, is connected with many vice test lines on the trunk test line, and every vice test line all is connected with experimental clamp. The main test wire and the auxiliary test wire are soft copper wires, and insulating sheaths are arranged on the soft copper wires. The main test line is composed of a plurality of sub test lines, and each sub test line is connected with an auxiliary test line; every divides test wire both ends to be connected with first line nose and second line nose respectively, detachably connects between first line nose and the second line nose. The utility model has convenient wiring and simple operation, greatly saves the test time and ensures that the line maintenance is completed according to the schedule.

Description

Special test wire for GIS circuit breaker time characteristic test

Technical Field

The utility model belongs to the field of test wires, and particularly relates to a special test wire for testing the time characteristic of a GIS circuit breaker.

Background

The time characteristic test of the circuit breaker comprises the steps of measuring the opening time, the closing time and the opening and closing time of the circuit breaker, wherein the closing time, the opening time and the opening and closing time of the circuit breaker are one of important parameters of the circuit breaker, and if the opening and closing time is seriously different, the incomplete phase connection or disconnection of a circuit or a transformer is caused, so that overvoltage damaging insulation can occur. According to the regulations of preventive test on power equipment (DL/T596-. Because a lot of test lines need to be connected in the test process, particularly, the positive and negative ends of the switching-on and switching-off coils of the control cubicle are complicated in wiring, time and labor are wasted during the test, and because the negative ends of the switching-on and switching-off coils in the control cubicle need to be reliably connected together during the test, a large number of test lines (8) are needed. But the test is all through single test wire individual connection at present, and work efficiency is poor, is unfavorable for shortening operating time.

Disclosure of Invention

In view of the technical problems in the background art, the test wire special for testing the time characteristic of the GIS breaker is convenient to wire and simple to operate, greatly saves the test time, and ensures that the line maintenance is completed on schedule.

In order to solve the technical problems, the utility model adopts the following technical scheme to realize:

the utility model provides a GIS circuit breaker time characteristic test special test line, includes the trunk test line, is connected with many vice test lines on the trunk test line, and every vice test line all is connected with experimental clamp.

In the preferred scheme, the main test wire and the auxiliary test wire are soft copper wires, and the soft copper wires are provided with insulating sheaths.

In a preferred scheme, the main test line is composed of a plurality of sub test lines, and each sub test line is connected with an auxiliary test line; every divides test wire both ends to be connected with first line nose and second line nose respectively, detachably connects between first line nose and the second line nose.

In a preferred scheme, the first wire nose comprises an insertion tube, and an elastic sheet is arranged on the inner wall of the insertion tube; the second wire nose comprises an L plate, and the L plate is connected with the inserted link; the inserted bar is used for being inserted into the inserted cylinder and is arranged in the inserted cylinder, and the inserted bar is contacted with the elastic sheet.

In a preferred scheme, the elastic pieces are arc-shaped elastic plates, one edge of each arc-shaped elastic plate is connected with the inner wall of the inserting cylinder, elastic gaps are formed between the other edge of each arc-shaped elastic plate and the inner wall of the inserting cylinder, and the number of the elastic pieces is at least three; the bottom of the inserted link is provided with a round angle.

In the preferred scheme, the length of the inserted bar is greater than that of the inserted cylinder, and the lower part of the inserted bar is detachably provided with an elastic snap ring.

In a preferable scheme, the lower part of the inserted rod is provided with an annular groove, and the elastic clamping ring is arranged in the annular groove.

This patent can reach following beneficial effect:

the time characteristic of the circuit breaker is generally carried out along with the line maintenance, the line maintenance construction period is short, the number of the circuit breakers is large, and the circuit breaker inspection device is convenient to wire and simple to operate, so that the test time is greatly saved, the working efficiency is improved, and the line maintenance is ensured to be completed according to time.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a front view of the present invention;

FIG. 2 is a detailed view of the trunk test line structure of the present invention;

FIG. 3 is a first view illustrating a first wire-nosed connection structure according to the present invention;

FIG. 4 is a schematic view of a second connecting structure of the first wire-nose and the second wire-nose according to the present invention;

FIG. 5 is a three-dimensional block diagram of a first wire-nose according to the present invention;

FIG. 6 is a three-dimensional structure diagram of a second wire nose according to the present invention (without the elastic clasp effect diagram);

fig. 7 is a three-dimensional structure diagram of the second wire nose (effect diagram of the installed elastic clasp) according to the utility model.

In the figure: the test device comprises a main test wire 1, a branch test wire 101, an auxiliary test wire 2, a test clip 3, a first wire nose 4, an insertion tube 41, an elastic sheet 42, a second wire nose 5, an L-shaped plate 51, an insertion rod 52, an elastic clamping ring 53 and an annular groove 54.

Detailed Description

The preferable scheme is as shown in fig. 1, the test line special for testing the time characteristic of the GIS breaker comprises a main test line 1, a plurality of auxiliary test lines 2 are connected to the main test line 1, and each auxiliary test line 2 is connected with a test clamp 3. The main test wire 1 and the auxiliary test wire 2 are both soft copper wires, and the soft copper wires are provided with insulating sheaths.

The test wire can be manufactured according to the size of the field device, for example, as shown in fig. 1, the test wires at the negative terminals of the switching-on/off coils are gathered into 9 wires, and the wire length is determined according to the field size. The test clamp 3 is fixed with the auxiliary test wire 2 in a compression joint mode, and the insulating rubber is sleeved outside the test clamp 3, so that short circuit is prevented, and the test is safer and more reliable.

Preferably, the main test line 1 is designed to have a detachable structure so that the number of the sub test lines 2 can be flexibly selected according to the number of devices. The backbone test line 1 has the following structure:

as shown in fig. 2, the main test wire 1 is composed of a plurality of sub test wires 101, and each sub test wire 101 is connected with a sub test wire 2; the two ends of each branch test wire 101 are respectively connected with a first wire nose 4 and a second wire nose 5, and the first wire nose 4 and the second wire nose 5 are detachably connected.

The first wire nose 4 and the second wire nose 5 are both made of copper materials, and the first wire nose 4 and the second wire nose 5 are both provided with sleeves which are in compression joint with the branch test wires 101.

Further, as shown in fig. 3-4, the first wire rope nose 4 comprises an insert tube 41, and an elastic sheet 42 is arranged on the inner wall of the insert tube 41; the second wire nose 5 comprises an L plate 51, and the L plate 51 is connected with the inserted bar 52; the insertion rod 52 is inserted into the insertion tube 41, and the insertion rod 52 contacts the elastic piece 42.

The number of the elastic pieces 42 is 3-5, the elastic pieces 42 are made of the same material as the first wire lug 4, and the elastic pieces 42 have a certain deformation amount, so that the elastic pieces 42 and the insertion rods 52 have good contact performance, and point connection or disconnection is avoided in the test process.

Further, as shown in fig. 5, the elastic pieces 42 are arc-shaped elastic plates, one edge of each arc-shaped elastic plate is connected with the inner wall of the insertion tube 41, an elastic gap is formed between the other edge of each arc-shaped elastic plate and the inner wall of the insertion tube 41, and the number of the elastic pieces 42 is at least three; the bottom of the insertion rod 52 is provided with a round corner.

Further, as shown in fig. 6 to 7, the length of the insertion rod 52 is greater than that of the insertion cylinder 41, and an elastic snap ring 53 is detachably provided at the lower portion of the insertion rod 52. The lower part of the insert rod 52 is provided with an annular groove 54, and the elastic snap ring 53 is arranged in the annular groove 54.

The elastic snap ring 53 plays a role in limiting, and the inserted rod 52 is prevented from falling off. The elastic snap ring 53 is often used as a limiting part of the motor end cover, when the elastic snap ring 53 is mounted or dismounted, sharp-nose pliers or tweezers are used for inserting two round holes in the elastic snap ring 53, then the elastic snap ring 53 is slightly opened, and then the picking and placing operation is performed.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.

Claims

1. The utility model provides a GIS circuit breaker time characteristic test special test line which characterized in that: the device comprises a main test line (1), wherein a plurality of auxiliary test lines (2) are connected to the main test line (1), each auxiliary test line (2) is connected with a test clamp (3), the main test line (1) is composed of a plurality of sub-test lines (101), and each sub-test line (101) is connected with one auxiliary test line (2); the two ends of each branch test wire (101) are respectively connected with a first wire nose (4) and a second wire nose (5), and the first wire nose (4) and the second wire nose (5) are detachably connected.

2. The GIS breaker time characteristic test special test line of claim 1, characterized in that: the main test wire (1) and the auxiliary test wire (2) are both annealed copper wires, and insulating sheaths are arranged on the annealed copper wires.

3. The GIS breaker time characteristic test special test line of claim 1, characterized in that: the first wire nose (4) comprises an insertion tube (41), and an elastic sheet (42) is arranged on the inner wall of the insertion tube (41); the second wire nose (5) comprises an L plate (51), and the L plate (51) is connected with the inserted bar (52); the insert rod (52) is used for being inserted into the insert cylinder (41), and the insert rod (52) is in contact with the elastic sheet (42).

4. The GIS breaker time characteristic test special line of claim 3, characterized in that: the elastic pieces (42) are arc-shaped elastic plates, one edge of each arc-shaped elastic plate is connected with the inner wall of the inserting cylinder (41), elastic gaps are formed between the other edge of each arc-shaped elastic plate and the inner wall of the inserting cylinder (41), and the number of the elastic pieces (42) is at least three; the bottom of the inserted link (52) is provided with a round angle.

5. The GIS breaker time characteristic test special line of claim 4, characterized in that: the length of the inserted rod (52) is larger than that of the inserted cylinder (41), and the lower part of the inserted rod (52) is detachably provided with an elastic snap ring (53).

6. The GIS breaker time characteristic test special test line of claim 5, characterized in that: an annular groove (54) is arranged at the lower part of the inserted rod (52), and an elastic snap ring (53) is arranged in the annular groove (54).