CN203562516U - Conductor connecting clamp - Google Patents

Abstract

The utility model provides a conductor connection clamp, which is used for connecting the conductor to be tested with the lead conductor during the temperature rise test and DC or AC resistance measurement of overhead wires or cable conductors in power transmission lines, and maintaining their electrical resistance. , mechanical performance, the wire clip includes outer clip, inner clip and fasteners, the outer clip is made of components with a symmetrical inward concave semicircle in the middle and through holes at both ends, and the fasteners are set on In the through hole, the improvement is that the inner clip is ring-shaped and formed by buckling half rings, and the inner clip is arranged in a circular hole formed by a semicircular arc. Compared with the prior art, the conductor connection clip provided by the utility model has the advantages of novel structure, convenient installation, reliable connection, small contact resistance with the conductor and can be reused.

Description

A conductor connection clip

technical field

The utility model relates to a connecting wire clip, in particular to a conductor connecting wire clip used for the temperature rise test and direct current or alternating current resistance measurement of overhead wires or cable conductors in power transmission lines.

Background technique

In recent years, with the continuous acceleration of China's electric power development, China's power grid has also developed rapidly, the operating voltage level of the power grid system has continued to increase, and the network scale has also continued to expand. At present, power grid construction has become the main direction of my country's electric power construction. By 2020, a strong smart grid will be fully built, and the goal of building a world-class power grid will be initially realized.

When performing temperature rise test, DC or AC resistance measurement on overhead wires or cable conductors, it is necessary to use connecting fittings to reliably connect the tested conductors to the lead conductors, and the contact resistance between conductors is required to be as small as possible. At present, although there are many kinds of conductor connection fittings on the domestic market, among which U-shaped clamps, T-shaped clamps and wedge-shaped clamps can ensure reliable connection and repeated use of conductors, but due to the relatively small contact area between fittings and conductors If the contact resistance is small, the contact resistance will be large, and the temperature of the conductor connection will rise rapidly during the test. Especially when the test current is large, the connection between the fittings and the conductor will be deformed or burned due to high temperature, which cannot meet the test requirements; Connecting fittings such as copper tubes or aluminum tubes can meet the requirements of reliable connection of conductors and low contact resistance, but after crimping, copper tubes or aluminum tubes are deformed and cannot be reused, resulting in waste.

Utility model content

In order to solve the above problems, the utility model provides a conductor connection clip, which has novel structure, convenient installation, reliable connection, small contact resistance with conductors and can be used repeatedly.

The purpose of this utility model is to adopt following technical scheme to realize:

The utility model provides a conductor connection clamp, which is used to connect the conductor to be tested with the lead conductor during the temperature rise test and DC or AC resistance measurement of overhead wires or cable conductors in power transmission lines, and keep Its electrical and mechanical properties, the clamp includes an outer clamp, an inner clamp and fasteners, and the outer clamp is formed by buckling parts with a symmetrical inwardly concave semicircle in the middle and through holes at both ends. , the fastener is arranged in the through hole, and the improvement is that: the inner clip is ring-shaped and formed by fastening of semicircular rings, and the inner clip is arranged on the circle formed by the semicircular arc in the hole.

Wherein, the outer diameter of the inner clip is equal to the diameter of the circular hole and forms an interference fit.

Wherein, the conductor is arranged in the ring of the inner clip.

Wherein, the inner diameter of the inner clip is equal to the diameter of the cross-section of the conductor.

Wherein, the inner clip is a group of circular rings with the same outer diameter and different inner diameters.

Wherein, the inner diameter of the inner clip is adjusted according to the outer diameter of the conductor section.

Wherein, a copper pad is provided between the conductor and the inner clip.

Wherein, the fasteners are bolts.

Compared with the prior art, the beneficial effects achieved by the utility model are:

1. The conductor is in full contact with the clamp, and the contact resistance is very small;

2. The wire clamp is fastened with bolts and nuts, and the connection is firm. It can ensure that the conductor and the clamp will not fall off during use;

3. It is suitable for connection with conductors of different cross-sections;

4. Simple structure, convenient and quick installation and disassembly;

5. Reusable;

6. The material used is copper or aluminum, which can meet the requirements of reliable connection of conductors and small contact resistance.

Description of drawings

Fig. 1 is: the assembling schematic diagram of the conductor connection clip provided by the utility model;

Fig. 2 is: the front view of the outer clamp of the conductor connection clamp provided by the utility model;

Fig. 3 is: the A-A sectional view of the outer clip of the conductor connection clip provided by the utility model;

Fig. 4 is: the front view of the inner clips with different inner diameters of the conductor connecting wire clip provided by the utility model;

Fig. 5 is: the front view of the inner clips with different inner diameters of the conductor connecting wire clip provided by the utility model;

Fig. 6 is: the front view of the inner clips with different inner diameters of the conductor connection clip provided by the utility model;

Among them: 1. Outer clamp; 2. Inner clamp; 3. Fastener; 4. Conductor.

Detailed ways

In order to make the above purpose, features and advantages of the utility model more obvious and understandable, the specific implementation of the utility model will be further described in detail below in conjunction with the accompanying drawings.

This embodiment takes the conductor connection clip as an example, as shown in Figure 1, the conductor connection clip provided by the embodiment of the present invention includes: an outer clip 1, an inner clip 2, a fastener 3, and a conductor 4; During the temperature rise test and DC or AC resistance measurement of the overhead wire or cable conductor in the transmission line, connect the tested conductor to the lead wire conductor, and maintain its electrical and mechanical properties. The inner concave semi-circular arc and parts with through holes at both ends are snapped together, as shown in Figure 2 to Figure 3 . The inner clip 2 is ring-shaped and is fastened by a semi-circular ring, and is installed in a circular hole formed by a semicircular arc. The conductor 4 is installed in the inner ring of the inner clip 2, and the fastener 3 connects the combined conductor 4, inner clip 2 and the outer clamp 1 are fastened, and the conductor 4 is kept in full contact with the clamp, so as to minimize the contact resistance between the conductors 4.

Wherein, the inner clip 2 is composed of a group of rings with the same outer diameter and different inner diameters, as shown in Figure 4 to Figure 6, the inner clip 2 with different inner diameters can be adjusted according to the cross-sectional diameter of the conductor 4; to ensure that the conductor 4 and the inner clip 2 for full exposure.

Wherein, the wire clip is made of copper or aluminum, so that it has better performance; the fastening member 3 uses bolts, which can facilitate and quickly disassemble the wire clip.

The utility model also provides an installation method of the conductor connection clip, the steps are as follows:

1. Select two inner clips 2 of corresponding specifications according to the section diameter of the conductor 4 to be connected;

2. Install the conductor 4 with the corresponding inner clip 2, and adjust it according to the tightness of the fit. If the cross section of the conductor 4 is too large, the two semicircular rings of the inner clip 2 can be kept evenly separated; if the cross section of the conductor 4 is too large, Small, a layer of copper pad can be wrapped on the surface of the conductor 4 to ensure the close contact between the conductor 4 and the inner clip 2 after the installation is completed;

3. After the two inner clips 2 are installed with the corresponding conductors 4, they are installed with the outer clip 1; during the installation process, the upper and lower parts of the inner clip 2 are evenly stressed;

4. Install the fastener 3 in the through holes at both ends of the outer clamp 1, and ensure that the conductor 4 is fully in contact with the clamp and fixed.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: it is still possible Any modification or equivalent replacement made to the specific implementation of the present utility model without departing from the spirit and scope of the present utility model shall be covered by the claims of the present utility model.

Claims (8)

1. a conductor connecting clamp, described wire clamp for the aerial condutor of transmission line or cable conductor when temperature rise test and direct current or AC resistance are measured, measured conductor is connected with leading-in conductor, and keep it electric, mechanical performance, described wire clamp comprises outer clip, inner clip and securing member, described outer clip is provided with by middle part the semi arch that symmetry caves inward, the parts fastening that two ends are provided with through hole forms, described securing member is arranged in described through hole, it is characterized in that: described inner clip is annular, by semicircular ring, fasten and form, described inner clip is arranged in the circular hole of described semi arch composition.

2. conductor connecting clamp as claimed in claim 1, is characterized in that: the external diameter of described inner clip equates with the aperture of described circular hole, and forms interference fit.

3. conductor connecting clamp as claimed in claim 1, is characterized in that: described conductor is arranged in the ring of described inner clip.

4. conductor connecting clamp as claimed in claim 3, is characterized in that: the internal diameter of described inner clip and the equal diameters of described cross-sectional area of conductor.

5. conductor connecting clamp as claimed in claim 4, is characterized in that: described inner clip is one group of annulus that external diameter is identical, internal diameter is different.

6. conductor connecting clamp as claimed in claim 5, is characterized in that: the internal diameter of described inner clip is adjusted according to the external diameter size of described cross-sectional area of conductor.

7. conductor connecting clamp as claimed in claim 6, is characterized in that: between described conductor and inner clip, be provided with copper packing.

8. conductor connecting clamp as claimed in claim 1, is characterized in that: described securing member is bolt.

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