CN110098588A - Power cable connector - Google Patents

Abstract

The invention discloses a kind of power cable connectors, belong to electrical equipment technical field.It solves the defect that structure existing for traditional cable connector in the prior art is more complex, is open more, easy infiltration.Its main structure includes the first cable connector and the second cable connector, first cable connector is connected with the second cable connector and structure is identical, first cable connector and the second cable connector include insulating layer, the insulating layer is connect with bell flange, it is equipped in the insulating layer and is equipped with a clamping structure and secondary clamping structure with the close-connected fastened layer of insulating layer, the fastened layer.Present invention is mainly used for connecting cables.

Description

Power cable connector

Technical field:

The invention belongs to the technical field of power equipment, and in particular relates to a power cable joint.

Background technique:

Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, power station lead-out lines, and internal power supply in industrial and mining enterprises. In power lines, the proportion of cables is gradually increasing; power cables are used in power systems. The cable products used to transmit and distribute high-power electric energy in the main line of the company include various voltage levels from 1 to 500KV and above, and various insulated power cables.

A cable is made of one or more mutually insulated conductors and an outer insulating layer to transmit power or information from one place to another; cable joints are required during cable installation. Many of the current cable layouts are installed outdoors. Once water seepage occurs in the joints, the damage to the cable lines will be very large. However, most of the current cable joints are separated, with complex structures, many openings, and easy water seepage. , and there will be a gap at the connection between the connector and the cable, and rainwater can easily enter from the gap.

At present, some power cables usually use wire strippers to remove the outer insulation layer of the two cable ends to be connected, so that the core wires are fully exposed, and then twist the two core wires together, and finally use insulating tape Wrapping the connection part, only relying on the connection wire to wind, the connection is unstable, and the sealing is poor. The general cable connection is easy to wear, damage or destroy the cable.

Invention content:

In order to solve the shortcomings of traditional cable joints in the prior art, such as complex structure, many openings, and easy water seepage, the present invention provides a power cable joint different from the prior art, which has a simple structure, fewer openings, and better sealing performance. Good and stable connection.

In order to achieve the above object, the present invention is achieved by adopting the following technical solutions:

A power cable connector, comprising a first cable connector and a second cable connector, the first cable connector is connected to the second cable connector and has the same structure, the first cable connector and the second cable connector both include an insulating layer, the The insulating layer is connected to the bell jar flange, and a fastening layer closely connected with the insulating layer is arranged in the insulating layer, and a primary clamping structure and a secondary clamping structure are provided on the fastening layer.

Further, the primary clamping structure includes a stress cone and a spring, the outer ring of the stress cone is clamped by the fastening layer, the inner ring is installed on the contact cylinder, one end of the spring is clamped with the stress cone, and the other end Fixed connection via bell flange.

Further, the secondary clamping structure includes a set screw, and the set screw passes through the insulating layer and the fastening layer.

Further, the secondary clamping structure includes a torsion spring, a connecting plate and a clamping plate, the connecting plate is installed on the insulating layer and the fastening layer, the connecting plate is connected to the clamping plate, and the torsion spring The two ends are respectively clamped on the connecting plate and the clamping plate.

Further, the insulating layer is connected to the bell housing flange through screws.

Further, a sealing ring is provided in the flange of the bell jar.

Further, the secondary clamping structure is provided with four to eight places, which are radially clamped on the outer circumference of the cable.

Compared with prior art, the beneficial effect of the present invention is:

1. The present invention has simple structure, few openings, good sealing performance, stable connection, good electrical conductivity at the connection and no damage to the cable;

2. Using the one-time clamping structure, the cable can be preliminarily clamped when it is inserted into the cable connector to prevent it from jumping out;

3. Using the secondary clamping structure, the secondary clamping structure is clamped on the outer circumference of the cable to clamp it again to further ensure that the cable will not jump out;

4. Through the bell flange and the internal sealing ring, three times of clamping can be realized, and rainwater can be prevented from penetrating into the cable on the basis of ensuring sufficient strength.

Description of drawings:

Fig. 1 is the structural representation of embodiment 2 among the present invention;

Fig. 2 is the structural representation of embodiment 3 in the present invention;

Fig. 3 is a schematic diagram of the installation of the clamping plate in the present invention.

In the figure: 1. Conductive transition body; 2. Insulation layer; 3. Fastening layer; 4. Stress cone; 5. Spring; 6. Bell flange; 7. Set screw; 8. Contact cylinder; 9. 1. Cable; 10. Second cable; 11. Torsion spring; 12. Connecting plate; 13. Clamping plate.

Detailed ways:

The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

Example 1:

As shown in Figure 1, a power cable connector includes a first cable connector and a second cable connector, the first cable connector is connected to the second cable connector and has the same structure, the first cable connector and the second cable connector Both include an insulating layer 2, the insulating layer 2 is connected to the bell flange 6, and the fastening layer 3 closely connected with the insulating layer 2 is arranged inside the insulating layer 2, and a primary card is arranged on the fastening layer 3. Tight structure and secondary clamping structure.

The primary clamping structure includes a stress cone 4 and a spring 5, the outer ring of the stress cone 4 is clamped by the fastening layer 3, the inner ring is installed on the contact cylinder 8, and one end of the spring 5 is clamped with the stress cone 4 tight, and the other end is fixedly connected through the bell flange 6.

Example 2:

As shown in FIG. 1 , a power cable joint, the secondary clamping structure includes a set screw 7 , and the set screw 7 passes through the insulating layer 2 and the fastening layer 3 . Other parts are identical with embodiment 1.

The working principle of this embodiment is:

After the first cable joint and the second cable joint are connected, the structure is integrated, and the middle is connected and conductive through the conductive transition body 1. When in use, the first cable 9 is inserted into the contact cylinder 8 in the first cable joint, and continues to be inserted until it transitions to the conductive body 1, and then give the first cable 9 a vertical force by rotating the set screw 7 to tighten it, while the stress cone 4 is elastic, and the diameter of the contact cylinder 8 is smaller than the diameter of the first cable 9 before use Therefore, when the first cable 9 is inserted, it is clamped under the action of the spring 5, and finally the sealing work is completed through the bell flange 6. The steps for inserting the second cable 10 into the second cable joint are the same as above.

Example 3:

As shown in Figure 2, a power cable joint, the secondary clamping structure includes a torsion spring 11, a connecting plate 12 and a clamping plate 13, the connecting plate 12 is installed on the insulating layer 2 and the fastening layer 3, The connecting plate 12 is connected to the clamping plate 13, and the two ends of the torsion spring 11 are clamped on the connecting plate 12 and the clamping plate 13 respectively. Other parts are identical with embodiment 1.

The insulating layer 2 is connected to the bell jar flange 6 through screws; the bell jar flange 6 is provided with a sealing ring; the secondary clamping structure is provided with four to eight locations, which are radially clamped on the outer circumference of the cable superior.

The working principle of this embodiment is similar to that of Embodiment 2, except that after the first cable 9 is inserted into the first cable connector and connected to the conductive transition body 1, the torsion spring 11 is in a non-working state without the first cable 9, When the first cable 9 is inserted, the clamping plate 13 is pushed out to apply pressure to the fastening layer 3, the torsion spring 11 is stretched, and one end is stuck on the clamping plate 13, forcing the clamping plate 13 to apply pressure to the end face of the first cable 9. The pressure prevents the first cable 9 from rotating or jumping; its principle is similar to the buckle structure on the belt.

Claims (7)

1. A power cable connector, comprising a first cable connector and a second cable connector, the first cable connector is connected to the second cable connector and has the same structure, characterized in that: the first cable connector and the second cable connector Both include an insulating layer (2), the insulating layer (2) is connected to the bell jar flange (6), and a fastening layer (3) tightly connected to the insulating layer (2) is provided in the insulating layer (2) , the fastening layer (3) is provided with a primary clamping structure and a secondary clamping structure. 2. The power cable joint according to claim 1, characterized in that: the primary clamping structure includes a stress cone (4) and a spring (5), and the outer ring of the stress cone (4) passes through the fastening layer ( 3) clamping, the inner ring is installed on the contact cylinder (8), one end of the spring (5) is clamped with the stress cone (4), and the other end is fixedly connected through the bell flange (6). 3. The power cable joint according to claim 2, characterized in that: the secondary clamping structure includes a set screw (7), and the set screw (7) passes through the insulating layer (2) and fastens layer (3). 4. The power cable joint according to claim 2, characterized in that: the secondary clamping structure comprises a torsion spring (11), a connecting plate (12) and a clamping plate (13), and the connecting plate (12 ) is installed on the insulating layer (2) and the fastening layer (3), the connecting plate (12) is connected with the clamping plate (13), and the two ends of the torsion spring (11) are respectively stuck on the connecting plate (12 ) and clamping plate (13). 5. The power cable joint according to claim 3 or 4, characterized in that the insulating layer (2) is connected to the bell flange (6) by screws. 6. The power cable joint according to claim 5, characterized in that: a sealing ring is arranged inside the bell jar flange (6). 7 . The power cable joint according to claim 4 , wherein the secondary clamping structure is provided with four to eight locations, which are radially clamped on the outer circumference of the cable. 8 .