CN206759005U - A kind of side phase conductor support meanss for electric power line pole tower - Google Patents

Abstract

The utility model discloses a supporting device for side-phase wires used for transmission line pole towers, which comprises a transmission line pole tower. A cross arm is fixedly arranged on the power transmission line pole tower, and a plurality of hanging insulator strings are arranged at the end of the cross arm. It also includes a rigid insulating support device, one end of the rigid insulating support device is connected to the inner side of the root of the cross arm, and the other end of the rigid insulating support device is connected to the bottom of the hanging insulator string. Beneficial effects achieved by the utility model: first, the effect of the utility model for preventing wind deflection accidents is obvious, especially those conventional wind deflection measures have no effect but cannot be transformed into a "V"-shaped line; the second Two, the utility model is simple in structure, safe and reliable, and only needs to add a hanging hole at the root of the cross-arm during installation, avoiding a large transformation of the iron tower during construction; third, the utility model has a short power failure time during the installation process, The work of installing the hanging hole can be completed when the power transmission line is running.

Description

A side-phase conductor support device for transmission line towers

technical field

The utility model relates to a support device for side-phase conductors used for power transmission line towers, and belongs to the technical field of power line maintenance.

Background technique

Trip accident is one of the main problems that endanger the safe operation of the line. According to the statistics of the State Grid Corporation of China in 2015, the main causes of line tripping are: lightning strikes (617 times, accounting for 40.6%), external damage (330 times, accounting for 21.7%), ice damage (201 times, accounting for 13.2%), Bird damage (170 times, accounting for 11.2%) and wind damage (152 times, accounting for 10%). The main causes of outages are: external damage (174, accounting for 31.6%), ice damage (156, accounting for 28.4%), wind damage (104, accounting for 18.9%) and lightning strikes (69, accounting for 12.5%) , and bird damage (19, accounting for 3.5%).

It can be seen from the above statistical results that the wind deflection trip is more harmful to the line. The probability of line failure and outage due to wind deflection tripping is relatively high, especially for important lines and power plant sending lines. Coupled with the frequent occurrence of strong winds and natural disasters in some areas, it is particularly important to prevent wind deviation in this area.

Utility model content

For new lines, "V" strings can be used to completely solve the problem of wind deflection. For lines that are already in operation, a weighted hammer and a double-string "character-eight" arrangement are generally used, but in this way the insulator strings will still swing towards the tower under the action of strong winds. For areas where strong winds and natural disasters occur frequently, wind deviation accidents may occur once there is an instantaneous extreme wind speed.

The side phase support device is to use a high-strength rigid insulating material to connect between the root of the cross arm and the side phase wire. In this way, the side-phase conductor is supported so that it will not deflect under the action of strong wind, and the problem of wind deflection of the side-phase conductor is completely solved.

According to the above analysis, if there is an insulating support device connected between the root of the cross arm and the conductor, it can prevent the deflection of the side-phase conductors, and completely solve the wind deflection problem of the side-phase conductors without large-scale reconstruction of the tower.

The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide a support device for side-phase wires used in power transmission line towers.

In order to solve the above-mentioned technical problems, the utility model provides a side-phase conductor support device for a transmission line pole tower, including a transmission line pole tower, a cross arm is fixedly arranged on the power transmission line pole tower, and the end of the cross arm is provided with Several suspension insulator strings are characterized in that they also include a rigid insulation support device, one end of the rigid insulation support device is connected to the inner side of the root of the cross arm, and the other end of the rigid insulation support device is connected to the suspension insulator string connected at the bottom.

As a preferred embodiment, several hanging holes are provided on the inner side of the root of the cross arm, and one end of the rigid insulating support device is connected to the hanging holes.

As a preferred embodiment, the rigid insulation support device includes a support link, and the two ends of the support link are respectively connected to the inner side of the root of the cross arm and the bottom of the hanging insulator string.

As a preferred embodiment, a sheath is nested on the outer surface of the supporting link.

As a preferred embodiment, both ends of the supporting connecting rod are provided with steel sleeves to facilitate connection with steel components and fittings on the power transmission line tower.

As a preferred embodiment, a number of pressure equalizing rings 44 are installed on the side of the supporting connecting rod connected with the fittings on the power transmission line tower.

As a preferred embodiment, the supporting link is made of epoxy-based glass fiber reinforced composite material.

As a preferred embodiment, the sheath is made of silicon rubber.

As a preferred embodiment, several connection rings are provided on the suspension insulator strings, and insulators on adjacent suspension insulator strings are connected through the connection rings.

Beneficial effects achieved by the utility model: First, the effect of the utility model in preventing wind deflection accidents is obvious, especially those conventional wind deflection measures have no effect but cannot be transformed into a "V"-shaped line; the second Second, the utility model is simple in structure, safe and reliable, and only needs to add a hanging hole at the root of the cross-arm during installation, which avoids a large transformation of the iron tower during construction; third, the utility model has a short power failure time during the installation process, The work of installing the hanging hole can be completed when the power transmission line is running.

Description of drawings

Fig. 1 is a schematic diagram of the installation of a side-phase wire support device for transmission line towers according to the present invention.

Fig. 2 is a schematic diagram of the installation structure of the connecting ring and the pressure equalizing ring of the present invention.

Fig. 3 is a schematic diagram of the installation position of the hanging hole of the utility model.

Fig. 4 is a structural schematic diagram of the lower plane of the cross arm before the iron tower of the utility model is installed with hanging holes.

Fig. 5 is a structural schematic diagram of the lower plane of the cross arm after the iron tower of the utility model is installed with hanging holes.

Fig. 6 is a structural diagram of a support device for side-phase conductors of the utility model used for transmission line towers after the installation is completed.

The meaning of the marks in the figure: 1- transmission line tower, 2- cross arm, 3- suspension insulator string, 4- rigid insulation support device, 5- connecting ring, 6- hanging hole, 41- supporting connecting rod, 42- sheath , 43-steel sleeve, 44-pressure equalizing ring.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described. The following examples are only used to illustrate the technical solution of the utility model more clearly, but not to limit the protection scope of the utility model.

Fig. 1 is a schematic diagram of the installation of a side-phase wire support device for transmission line towers according to the present invention. The utility model proposes a side-phase wire support device for a transmission line pole tower, which includes a transmission line pole tower 1, a cross arm 2 is fixedly arranged on the power transmission line pole tower 1, and a plurality of hanging insulator strings 3 are arranged at the end of the cross arm 2, It is characterized in that it also includes a rigid insulating support device 4 , one end of the rigid insulating support device 4 is connected to the inner side of the root of the cross arm 2 , and the other end of the rigid insulating support device 4 is connected to the bottom of the hanging insulator string 3 .

As a preferred embodiment, the inner side of the root of the cross arm 2 is provided with several hanging holes 6, and one end of the rigid insulating support device 4 is connected to the hanging holes 6. Fig. 3 is a schematic diagram of the installation position of the hanging holes of the present invention. Place A in the figure is the installation position of the hanging hole 6.

Fig. 6 is a structural diagram of a support device for side-phase conductors of the utility model used for transmission line towers after the installation is completed. As a preferred embodiment, the rigid insulating support device 4 includes a supporting link 41 , and the two ends of the supporting link 41 are respectively connected to the inner side of the root of the cross arm 2 and the bottom of the hanging insulator string 3 .

As a preferred embodiment, a sheath 42 is nested on the outer surface of the supporting link 41 .

As a preferred embodiment, both ends of the supporting link 41 are provided with steel sleeves 43 for easy connection with steel components and fittings on the power transmission line tower 1 .

As a preferred embodiment, a number of pressure equalizing rings 44 are installed on the side of the supporting connecting rod 41 connected with the fittings on the power transmission line tower 1 .

As a preferred embodiment, the supporting link 41 is made of epoxy-based glass fiber reinforced composite material.

As a preferred embodiment, the sheath 42 is made of silicon rubber.

Considering that after the support of the side-phase conductors, the suspension insulator string will be lifted due to an upward force under the action of a large reverse wind. In order to prevent the insulator bayonet of the suspension insulator string from being damaged due to repeated lifting, the insulator will fall off , so the connection form of the ball-bowl head between ordinary insulators is replaced by the connection form between connecting rings, and the strength and insulation level should be the same as the original insulators. Fig. 2 is a schematic diagram of the installation structure of the connecting ring and the pressure equalizing ring of the present invention. As a preferred embodiment, several connection rings 5 are provided on the suspension insulator strings 3 , and insulators on adjacent suspension insulator strings 3 are connected through the connection rings 5 .

Fig. 4 is a structural schematic diagram of the lower plane of the cross arm before the iron tower of the utility model is installed with hanging holes. Fig. 5 is a structural schematic diagram of the lower plane of the cross arm after the iron tower of the utility model is installed with hanging holes. The utility model also proposes an installation method for the side-phase wire support device of the transmission line pole tower, which specifically includes: when the transmission line is still in operation, the construction personnel install a number of hanging holes 6 at the root of the cross arm 2; After the hole 6 is installed and the transmission line is powered off, the original suspension insulator string is removed, and the rigid insulating support device 4 and the suspension insulator string 3 with the connecting ring 5 are respectively installed on the root and end of the cross arm 2; When the line is in a windy environment, the rigid insulating support device 4 supports the wire to prevent it from shifting to the side of the transmission line tower 1 .

Beneficial effects achieved by the utility model: First, the effect of the utility model in preventing wind deflection accidents is obvious, especially those conventional wind deflection measures have no effect but cannot be transformed into a "V"-shaped line; the second Second, the utility model is simple in structure, safe and reliable, and only needs to add a hanging hole at the root of the cross-arm during installation, which avoids a large transformation of the iron tower during construction; third, the utility model has a short power failure time during the installation process, The work of installing the hanging hole can be completed when the power transmission line is running.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and deformations can also be made. And deformation should also be regarded as the protection scope of the present utility model.

Claims (9)

1. A side-phase wire support device for a transmission line tower, comprising a transmission line tower (1), the transmission line tower (1) is fixedly equipped with a cross arm (2), and the cross arm (2) Several hanging insulator strings (3) are arranged at the end, and it is characterized in that it also includes a rigid insulating support device (4), and one end of the rigid insulating support device (4) is connected to the inner side of the root of the cross arm (2) , the other end of the rigid insulating support device (4) is connected to the bottom of the hanging insulator string (3). 2. A side-phase wire support device for transmission line poles and towers according to claim 1, characterized in that, a number of hanging holes (6) are provided on the inner side of the root of the cross arm (2), and the rigid insulation One end of the supporting device (4) is connected with the hanging hole (6). 3. A side-phase conductor support device for transmission line towers according to claim 1, characterized in that, the rigid insulation support device (4) includes a support link (41), and the support link ( The two ends of 41) are respectively connected to the inner side of the root of the cross arm (2) and the bottom of the suspension insulator string (3). 4. The supporting device for side-phase wires used in power transmission line towers according to claim 3, characterized in that a sheath (42) is nested on the outer surface of the supporting connecting rod (41). 5. A side-phase conductor support device for transmission line towers according to claim 3, characterized in that steel sleeves (43) are provided at both ends of the support connecting rod (41), which is convenient for contact with power transmission The steel components and fittings on the line tower (1) are connected. 6. A side-phase conductor support device for a power transmission line tower according to claim 3, characterized in that, the support connecting rod (41) is connected to the metal fittings on the power transmission line tower (1) Several pressure equalizing rings (44) are installed on one side. 7 . The supporting device for side-phase wires used in transmission line towers according to claim 3 , characterized in that, the material of the supporting connecting rod ( 41 ) is epoxy-based glass fiber reinforced composite material. 8 . 8 . The supporting device for side-phase wires used in power transmission line poles and towers according to claim 4 , characterized in that, the material of the sheath ( 42 ) is silicon rubber. 9 . 9. A side-phase wire support device for transmission line poles and towers according to claim 1, characterized in that, the suspension insulator string (3) is provided with several connecting rings (5), adjacent to the suspension The insulators on the insulator string (3) are connected through the connection ring (5).