CN104485619A - Cable terminal tower - Google Patents

Abstract

The invention provides a cable terminal tower. The cable terminal tower comprises a tower body and a connecting platform, wherein the tower body is fixedly provided with an overhead line to be adaptor-coupled; the connecting platform is arranged at the bottom of the tower body and is fixedly provided with a cable extending to the connecting platform from the underground; a connector of the overhead line is in butt joint with a connector of the cable. The cable terminal tower comprises the tower body and the connecting platform connected with the cable, and the connector of the overhead line fixed to the tower body is connected with the connector of the cable, so the adaptor coupling of the overhead line and the cable can be realized, and then an overhead line power transmission mode is more conveniently converted into a cable power transmission mode.

Description

cable terminal tower

technical field

The invention relates to the field of power transmission lines, and more specifically, to a cable terminal tower.

Background technique

In recent years, with the continuous improvement of my country's social and economic development level, the urbanization process in various places has shown a trend of acceleration, and the land available for overhead line corridors has become increasingly scarce, and the development of power high-voltage line corridors has become more and more difficult. At the same time, issues related to environmental protection such as deforestation and electromagnetic radiation interference have attracted the attention of the whole society, making the cost of land acquisition for tower foundations of line corridors and demolition of paths more and more expensive.

With the rapid development of the power system and the rapid expansion of the city scale, large-capacity power transmission projects have appeared one after another, and 500kV substations have been introduced into the suburbs of urban areas. There is an urgent need to develop a 220kV power supply network to transmit power to the city center. In the construction of 220kV high-voltage transmission lines in crowded urban areas, it is becoming more and more difficult to solve the problem of line corridors. According to the urban overall planning scheme, the newly built transmission lines in the urban area will be mainly laid by cables. In this way, the overall scheme of connecting 220kV overhead lines and cable lines after the implementation of sections will be more widely adopted.

At present, in the construction of power grids in the urban area of Beijing and its surrounding areas, the method of connecting 220kV overhead lines to cables is to build a new cable terminal station (or small room) at the interface, and the overhead line is converted into a cable through the cable room.

However, the permanent land acquisition area of the cable terminal station is relatively large, and the selection of its location is subject to the overall planning of the city, making its implementation increasingly difficult.

Contents of the invention

The present invention aims to provide a cable terminal tower to solve the problem that the cable terminal station in the prior art occupies a large area.

In order to solve the above technical problems, the present invention provides a cable terminal tower, comprising: a tower body, on which an overhead line to be transferred is fixed; a connecting platform, which is arranged at the bottom of the tower body, and is fixed with Cables extending from the ground to the connection platform; where the connectors of the overhead wires are docked with the connectors of the cables.

Further, the cable terminal tower further includes: connecting leads, one end of which is electrically connected to the connecting head of the overhead line, and the other end of the connecting lead is electrically connected to the connecting head of the cable.

Further, an air terminal is installed on the connector of the cable, the connector of the cable is electrically connected to the connecting lead through the air terminal, and the air terminal is installed on the connection platform.

Further, the cable terminal tower further includes: a lightning arrester, which is installed on the connection platform, and one end of the lightning arrester is connected to the connection lead wire, and the other end of the lightning arrester is connected to the connector of the cable.

Further, the cable terminal tower further includes: a lead wire string, which is installed on the connection platform, and one end of the lead wire string is connected to the connecting lead wire, and the other end of the lead wire string is connected to the cable.

Further, the cable terminal tower further includes fixed legs, and the connection platform is supported on the ground by the fixed legs.

Further, the cable terminal tower also includes a cross arm, and the overhead line is fixed on the tower body through the cross arm.

Further, the cable terminal tower further includes an insulator, one end of the insulator is connected to the overhead line, and the other end of the insulator is connected to the cross arm.

Further, the cable terminal tower also includes a lead wire connection piece, one end of the lead wire connection piece is connected to the tower body, and the other end of the lead wire connection piece is connected to the connecting lead wire.

Further, multiple overhead wires are connected into one strand and then electrically connected to one cable.

The cable terminal tower in the present invention includes a tower body and a connection platform connected with cables, and by connecting the connectors of the overhead wires fixed on the tower body to the connectors of the cables, the transfer between the overhead wires and the cables can be realized, and then It is more convenient to convert the overhead line power transmission mode to the cable power transmission mode.

In addition, the cable terminal tower in the present invention can provide support for the cable through the connection platform, so that the cable can be fixed on the cable terminal tower, and the setting of the connection platform makes the connection between the cable and the overhead line change from ground connection to air connection , thereby canceling the use of the cable compartment, thereby solving the problem of a large footprint.

In the present invention, by changing the cable terminal station in the prior art into a cable terminal tower, not only can the transfer between the overhead line and the cable be realized more conveniently, but also the occupied area of the cable terminal tower is small, which effectively solves the problem of The problem that the cable terminal station in the prior art occupies a large area.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 schematically shows the structure diagram of the cable terminal tower in the present invention.

Reference signs in the figure: 10, tower body; 21, overhead line; 22, cable; 23, connecting lead wire; 31, connecting platform; 32, fixed leg; 40, air terminal; 50, lightning arrester; 60, lead string; 70, cross arm; 80, insulator.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

The present invention provides a cable terminal tower, please refer to FIG. 1, the cable terminal tower includes: a tower body 10, on which an overhead line 21 to be transferred is fixed; a connecting platform 31, which is arranged on the tower body 10 and the connection platform 31 is fixed with a cable 22 extending from the ground to the connection platform 31; wherein, the connection head of the overhead line 21 is docked with the connection head of the cable 22.

The cable terminal tower in the present invention includes a tower body 10 and a connection platform 31 connected with cables 22, and by connecting the connectors of the overhead wires 21 fixed on the tower body 10 to the connectors of the cables 22, the overhead wires 21 can be realized. The connection with the cable 22 makes it more convenient to convert the overhead line power transmission mode to the cable power transmission mode.

In addition, the cable terminal tower in the present invention can provide support for the cable 22 through the connection platform 31, so that the cable 22 can be fixed on the cable terminal tower, and the setting of the connection platform 31 makes the connection between the cable 22 and the overhead line 21 by The ground connection becomes the air connection, thereby canceling the use of the cable cubicle, thereby solving the problem of large floor space.

In the present invention, by changing the cable terminal station in the prior art into a cable terminal tower, not only can the transfer between the overhead line 21 and the cable 22 be realized more conveniently, but also, the occupied area of the cable terminal tower is small, effectively The problem that the cable terminal station occupies a large area in the prior art is solved.

Preferably, the cable terminal tower further includes: a connection lead 23 , one end of the connection lead 23 is electrically connected to the connection head of the overhead line 21 , and the other end of the connection lead 23 is electrically connected to the connection head of the cable 22 . The present invention can realize the connection between the overhead line 21 and the cable 22 relatively conveniently by setting the connection lead wire 23 .

Preferably, an air terminal 40 is installed on the connector of the cable 22 , the connector of the cable 22 is electrically connected to the connection lead 23 through the air terminal 40 , and the air terminal 40 is installed on the connection platform 31 .

Preferably, the cable terminal tower further includes: a lightning arrester 50 installed on the connection platform 31 , and one end of the lightning arrester 50 is connected to the connection lead 23 , and the other end of the lightning arrester 50 is connected to the connector of the cable 22 . The present invention can prevent the overhead line 21 and the cable 22 from being struck by lightning by setting the lightning arrester 50, thereby ensuring the safety of the terminal tower in use. Preferably, the arrester 50 is fixedly connected to the platform.

Preferably, the cable terminal tower further includes: a lead string 60 installed on the connection platform 31 , and one end of the lead string 60 is connected to the connection lead 23 , and the other end of the lead string 60 is connected to the cable 22 . In this way, the connection of the lightning arrester 50 can be realized more conveniently.

Preferably, the cable terminal tower further includes fixed legs 32 , and the connection platform 31 is supported on the ground by the fixed legs 32 . The cable terminal tower in the present application can provide support for the cable 22 through the connection platform 31 , and setting the fixed legs 32 can support the connection platform 31 more conveniently.

Preferably, the cable terminal tower further includes a cross arm 70 , and the overhead line 21 is fixed on the tower body 10 through the cross arm 70 .

Preferably, the cable terminal tower further includes an insulator 80 , one end of the insulator 80 is connected to the overhead line 21 , and the other end of the insulator 80 is connected to the cross arm 70 .

Preferably, the cable terminal tower further includes a lead connecting piece, one end of the lead connecting piece is connected to the tower body 10 , and the other end of the lead connecting piece is connected to the connecting lead 23 . In this way, the connecting lead wire 23 can be supported to prevent interference with other objects due to its hanging down. Preferably, the lead connections are insulators. Preferably, the lead wire connections are mounted on the cross arm 70 .

Preferably, a plurality of overhead wires 21 are connected into one strand and then electrically connected to one cable 22 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A cable terminal tower, characterized in that, comprising: A tower body (10), on which an overhead line (21) to be switched is fixed; A connection platform (31), the connection platform (31) is arranged at the bottom of the tower body (10), and the cable extending from the ground to the connection platform (31) is fixed on the connection platform (31) (twenty two); Wherein, the connector of the overhead line (21) is docked with the connector of the cable (22). 2. The cable terminal tower according to claim 1, wherein the cable terminal tower further comprises: A connecting lead (23), one end of the connecting lead (23) is electrically connected to the connector of the overhead line (21), and the other end of the connecting lead (23) is electrically connected to the connector of the cable (22). connect. 3. The cable terminal tower according to claim 2, wherein an air terminal (40) is installed on the connector of the cable (22), and the connector of the cable (22) passes through the air terminal (40) ) is electrically connected to the connection lead (23), and the air terminal (40) is installed on the connection platform (31). 4. The cable terminal tower according to claim 2, wherein the cable terminal tower further comprises: A lightning arrester (50), the lightning arrester (50) is installed on the connection platform (31), and one end of the lightning arrester (50) is connected to the connection lead (23), and the other end of the lightning arrester (50) Connect with the connector of the cable (22). 5. The cable terminal tower according to claim 2, wherein the cable terminal tower further comprises: A lead string (60), the lead string (60) is installed on the connection platform (31), and one end of the lead string (60) is connected to the connection lead (23), the lead string (60 ) is connected with the cable (22) at the other end. 6. The cable terminal tower according to claim 1, characterized in that, the cable terminal tower also includes fixed legs (32), and the connection platform (31) is supported on the ground by the fixed legs (32) on the ground. 7. The cable terminal tower according to claim 1, characterized in that, the cable terminal tower further comprises a cross arm (70), and the overhead line (21) is fixed on the said cross arm (70). On the tower body (10). 8. The cable terminal tower according to claim 7, characterized in that, the cable terminal tower further comprises an insulator (80), one end of the insulator (80) is connected to the overhead line (21), and the insulator The other end of (80) is connected with said cross arm (70). 9. The cable terminal tower according to claim 2, characterized in that, the cable terminal tower also includes a lead wire connector, one end of the lead wire connector is connected to the tower body (10), and the lead wire connector The other end of the connecting wire (23) is connected. 10. The cable terminal tower according to claim 1, characterized in that, a plurality of said overhead lines (21) are connected into one strand and then electrically connected to one said cable (22).