CN202363863U - Dry type branch joint of cable - Google Patents

Abstract

The utility model relates to a cable branch joint, in particular to a dry type branch joint of high-tension and extra-high-tension cables. The dry type branch joint is formed by three cables (1), a connecting conductor (3), an insulator (4) and a casing (5). The end of each cable (1) is provided with a cable terminal (2) connected with the connecting conductor (3), the insulator (4) is wrapped outside the connecting conductor (3), and the cable terminals (2) and the insulator (4) are arranged in the casing (5). The three cables (1) and the corresponding cable terminals (2) are located on one side of the casing (5). The dry type branch joint has the advantages that (1) when in use, the dry type branch joint can be vertically installed and horizontally installed, the installing methods are various and flexible, and the application range is wide; and (2) because the dry type branch joint can be vertically installed, the dry type branch joint is high in safe reliability and long in service life and greatly reduces maintenance cost and using cost.

Description

A cable dry branch joint

technical field

The utility model relates to a cable branch joint, in particular to a dry-type branch joint of high-voltage and ultra-high-voltage cables.

Background technique

In the high-voltage and extra-high-voltage power cable connection systems of 35kV and above 35kV, the cable branch joint can realize the reliable connection of the cable line with one input and two outputs or one input and multiple outputs, that is, one line is divided into two or more branch lines.

The fully dry branch joint does not need to be inflated or filled with any insulating casting agent. The branch joint has a short cable handling length, small size, and no maintenance during operation, so it is widely used.

As shown in Figure 3 of the prior art, the cable dry-type branch joint is composed of three cables 1, a connecting conductor 3, an insulator 4 and a housing 5, and the end of each cable 1 is provided with a cable terminal 2, and the cable terminal 2 is connected to the connecting conductor 3 connection, the connecting conductor 3 is wrapped with an insulator 4, the cable terminal 2, the connecting conductor 3 and the insulator 4 are arranged in the housing 5, wherein: a cable 1 and the corresponding cable terminal 2 are located on one side of the housing 5, and the other The two cables 1 and corresponding cable terminations 2 are located on the other side of the housing 5 .

Chinese Patent Publication No. CN201303244Y discloses a dry-type "Y" branch joint for high-voltage power cables. The housing is provided with a shielding layer, an insulating body and a contact seat constitute the main body of the joint. A mounting seat corresponds to three cable plug-in units. Each cable plug-in unit is a stress cone installed on the cable. A wedge-shaped barrel, snapper and stop sleeve are installed on the core of the cable. The stress cone is tightened by the spring cone support. On the inner tapered surface of the main body of the joint, the wedge-shaped barrel and the occluder are inserted into the installation seat, and the tail pipe corresponding to the cable is installed outside the main body of the joint. The branch joints disclosed in this Chinese patent are arranged in a "Y" shape.

When the prior art dry-type branch joint is in use, as shown in FIG. 4 , the dry-type branch joint is horizontally arranged in the cable shaft 7 through the installation bracket B8.

Cable wells are generally located below the ground, where underground water is unavoidable. Therefore, the main disadvantages of the dry-type branch joint in the prior art are: 1. It can only be installed horizontally in the cable shaft, and the installation and use range is limited. 2. The dry branch joint in the cable well is often immersed in the underground water of the cable well, which is not safe enough.

Contents of the invention

The purpose of the utility model is to provide a cable dry-type branch joint with a wide application range, safety and reliability, and various and flexible installation methods for the deficiencies of the prior art.

In order to achieve the above-mentioned technical purpose, the utility model adopts the following technical solutions: a cable dry-type branch joint, which is composed of three cables, connecting conductors, insulators and housings, each cable end is provided with a cable terminal, and the cable terminal is connected to the The connecting conductor is connected, the connecting conductor is wrapped with an insulator, the cable terminal and the insulator are arranged in the casing, and the three cables and the corresponding cable terminal are all located on one side of the casing.

After adopting the above technical scheme, the utility model has the following beneficial effects: (1) The three cables and the corresponding cable terminals are all located on one side of the housing, that is, the cable dry-type branch joints are arranged in an "E" shape, and the cable dry-type The branch joint can be installed vertically on the cable well and horizontally in the cable well, that is, when the utility model is used, it can be installed vertically or horizontally. The installation methods are diverse and flexible, and the application range is wide. Installation requirements, such as small space occupation during vertical installation, can meet the narrow space constraints of cable wells and make up for the shortcomings of existing technologies. (2) Since the utility model can be installed vertically, it can avoid the problems caused by the dry branch joints being often immersed in the underground water of the cable well during horizontal installation, with higher safety and reliability and long service life , greatly reducing maintenance costs and use costs.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural diagram of the vertical installation state of Fig. 1;

Fig. 3 is the structural representation of prior art;

Fig. 4 is a schematic structural diagram of Fig. 3 in a horizontally installed state.

In the figure: 1. Cable, 2. Cable terminal, 3. Connecting conductor, 4. Insulator, 5. Housing, 6. Mounting bracket A, 7. Cable well, 8. Mounting bracket B.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Example

As shown in FIG. 1 , a cable dry-type branch joint is composed of three cables 1 , a connecting conductor 3 , an insulator 4 and a housing 5 . The end of each cable 1 is provided with a cable terminal 2 , the cable terminal 2 is connected to the connection conductor 3 , the connection conductor 3 is wrapped with an insulator 4 , and the cable terminal 2 and the insulator 4 are arranged in the housing 5 . The three cables 1 and the corresponding cable terminals 2 are located on one side of the housing 5 . That is: the cable dry-type branch joints are arranged in an "E" shape, and the cable dry-type branch joints can be installed both vertically on the cable well and horizontally in the cable well.

When the cable dry-type branch joint is installed vertically, as shown in Figure 2: install the installation bracket A6 on the cable well 7, the cable dry-type branch joint is fixed on the installation bracket A6, and the three cables of the cable dry-type branch joint 1 And the corresponding cable terminals 2 are all facing down and extending into the cable shaft 7, and the three cables 1 are connected to the power grid as required.

When adopting the vertical installation mode, the cable dry-type branch joint will be located above the cable well 7, avoiding underground water accumulation in the cable well 7, and improving the reliability and safety of use.

Certainly, the cable dry-type branch joint described in the utility model can also be horizontally installed in the cable shaft.

The utility model is not limited to the above-mentioned embodiments, and any technical solutions formed by equivalent or equivalent replacements all fall within the scope of protection required by the utility model.

Claims (1)

1. cable dry type branch joint; It is made up of three cables (1), bonding conductor (3), insulator (4) and housing (5); The end of every cable (1) is provided with cable termination (2); Cable termination (2) is connected with bonding conductor (3); Bonding conductor (3) is wrapped with insulator (4), and cable termination (2) and insulator (4) are located in the housing (5), it is characterized in that: said three cables (1) and corresponding cable termination (2) all are positioned at a side of housing (5).

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