CN112448350B - Drilling and crossing tower capable of preventing wire jumping and wind deflection - Google Patents

Abstract

The invention discloses a drilling tower for preventing wire jumping from wind deflection, which comprises a tower body and a tower head, the tower head is located above the tower body, and is arranged horizontally along the direction from the tower head to the tower body There are ground cross-arms, first cross-arms and second cross-arms, jumpers are arranged on both sides of the second cross-arms, and multiple insulator strings and multiple Two horizontally arranged weights, the two ends of the insulator string are respectively fixed to the top and bottom of the wire jumper, and a plurality of horizontally arranged weights are fixed on the bottom of the wire jumper. While improving the wind resistance of the jumper, it also reduces the overall tower height multiple times and reduces the cost, and the single-piece heavy hammer provides convenience when the staff goes up the tower to remove the heavy hammer, reducing safety hazards.

Description

A kind of jumper tower with wind deflection prevention

technical field

The invention relates to the technical field of a fixed heavy hammer structure of a high-voltage overhead transmission line, in particular to a jumper tower for preventing wind deflection of wire jumpers.

Background technique

The higher the altitude, the lower the air density and absolute humidity, which reduces the discharge voltage of the suspension insulator strings and air gaps of the transmission line. In order to ensure the safe operation of overhead transmission lines in high altitude areas, it is necessary to ensure that the swing angle of the suspension insulator string is within the allowable value. For the design of lines in heavy ice areas, methods such as increasing the height of the iron tower are often used in the design to avoid using heavy hammers to limit the excessive swing angle of the suspension insulator strings. However, some lines are limited by the terrain, and methods such as increasing the height of the iron tower are endless. It is ideal and has a large investment, so consider using a heavy hammer instead. CN204243690U discloses a fixed weight structure of a high-voltage overhead transmission line, in which multiple pieces of weight are fastened to the connecting plate and installed on the high-voltage overhead transmission line between the suspension insulator string and the suspension clamp. CN111725762A discloses superimposed and combined heavy hammers and its manufacturing method, but the stacked heavy hammers will still increase the total height of the drilling tower, and the effect of preventing jumper windage is limited.

Contents of the invention

In order to overcome the above-mentioned defects, the object of the present invention is to provide a jumper wire deflection prevention drilling tower, so as to reduce the overall height of the tower body and reduce the wind deflection of the wire jumper.

To achieve the above object, the present invention adopts the following technical solutions:

A drill-through tower for preventing wire jumping and wind deflection, comprising a tower body and a tower head, the tower head is located above the tower body; horizontally arranged horizontally along the direction from the tower head to the tower body pole, the first cross-arm and the second cross-arm, on both sides of the second cross-arm there is a wire jumper, and on the wire jumper there are a plurality of obliquely arranged insulator strings and a plurality of horizontally arranged A heavy hammer, the two ends of the insulator string are respectively fixed to the top and the bottom of the wire jumper, and a plurality of weights arranged horizontally and side by side are fixed at the bottom of the wire jumper.

Optionally, the jumper frame includes a tower head jumper frame and a hard jumper frame, the tower head jumper frame is located above the hard jumper frame, and one end of the insulator string is connected to the tower head jumper frame. The wire frame is connected, and the other end is connected with the hard wire jumper; the weight is connected with the hard wire jumper through bolts, and is located at the bottom of the hard jumper.

Optionally, the weight is in the shape of a rectangular parallelepiped plate, made of cast iron, and the specification is 400mm*600mm*30mm.

Optionally, the number of the weights is four.

Optionally, the included angle between adjacent insulator strings is between 30° and 50°.

Composite insulators are widely used on the jurisdiction and newly-built transmission lines. However, due to the light weight of the insulator strings, in order to prevent the occurrence of large-scale dancing and swinging of the wires and jumpers under the action of strong wind, ice and various stresses, the insulators will be damaged. In the event of dangerous situations such as strings being pulled off, wires grounded, short-circuited, or disconnected, it is necessary to install a suspension weight device on some tension-resistant and straight-line towers to balance and eliminate various stresses on the wires through the falling force of its own weight. Influenced by external forces, ensure the safe distance between the wires and towers, guy wires, crossing objects, adjacent phase ground wires, etc. Therefore, it needs to be used on the jumpers of tension, corners, double circuits, branches, and phase commutation towers, with large sags, jumps around or on the outer corner side of the corners, and on the suspension strings of parallel wires carried by straight towers at the tuyere of the wind zone. , it is necessary to install a suspension string and a suspension weight device to prevent the pull-up of the insulator string and suppress the excessive swing angle of the wire. However, due to the unreasonable structure and connection method of the suspension weight, the thickness of the weight will be too large, and the distance between the conductors will be guaranteed, so the tower height needs to be increased; the operation process is complicated, the work efficiency is low, and the time is long; personnel High risk and physical exertion: Frequent shifting of positions on the pole tower, installation of the hanging weight device with arms around the shoulders; the device has potential safety hazards in operation; the wind deflection effect is limited.

Positive beneficial effect of the present invention:

The insulator strings are set obliquely, and multiple horizontal weights are fixed at the bottom of the jumper frame that fixes the insulator strings, which reduces the height of the insulator strings and the height of the weights to increase weight, reduce wind resistance, and reduce vertical cross-sectional area. Reduce the wind resistance, improve the wind resistance of the jumper, and reduce the overall tower height multiple times, reducing the cost, and the single-piece heavy hammer provides convenience when the staff goes up the tower to remove the heavy hammer, reducing safety hazards.

Description of drawings

Fig. 1 is a schematic diagram of the front view structure of a jumper anti-deviation drilling tower provided by Embodiment 1 of the present invention;

Fig. 2 is a schematic structural view of an exemplary weight provided in Embodiment 1 of the present invention;

Fig. 3 is a schematic diagram of the side view of Fig. 1 provided by Embodiment 1 of the present invention.

Detailed ways

The present invention will be further described below in conjunction with some specific embodiments.

Example 1

As shown in Fig. 1 to Fig. 3, the present invention discloses a drill-through tower for preventing wire jumping and wind deflection, including a tower body and a tower head, and the tower head is located above the tower body; The direction of the tower body is respectively horizontally arranged with a ground wire cross arm 10, a first cross arm 20 and a second cross arm 30, and wire jumpers 40 are arranged on both sides of the second cross arm 30, and in the jumper The wire frame 40 is provided with a plurality of insulator strings 50 arranged obliquely and a plurality of weights 60 arranged horizontally. The bottom of the wire rack 40 is fixed with a plurality of weights 60 arranged horizontally side by side.

Referring to Figure 2, it is a schematic diagram of an exemplary stacked weight 60. The length of the jumper string is generally 2.5m. 60 pieces of the weight are stacked on the weight 60 seat and hung under the shoulder pole with a parallel hanging plate, so that it is invisible The charged body is increased, because the charged body needs to keep a certain distance, the height of the drilling tower will be increased correspondingly, and the cost will be increased, and the vertical cross section of the heavy hammer 60 set in this way is relatively large, and the wind resistance will also increase accordingly , the effect of anti-jumper windage is limited. In the present invention, the insulator strings 50 are arranged obliquely, and a plurality of weights 60 arranged horizontally are fixed at the bottom of the wire jumper 40 on which the insulator strings 50 are fixed, so as to increase the weight and reduce the wind resistance. The overall tower height reduces the cost, and the single-piece heavy hammer 60 provides convenience when the staff goes up the tower to disassemble the heavy hammer 60 .

Specifically, referring to Fig. 3, the jumper frame 40 includes a tower head jumper frame 41 and a hard jumper frame 42, the tower head jumper frame 41 is located above the hard jumper frame 42, and the insulator string One end of 50 is connected with the tower head jumper 41, and the other end is connected with the hard jumper 42; the weight 60 is connected with the hard jumper 42 by bolts, and is located on the hard jumper bottom of rack 42. The ground wire cross arm 10 is provided with a ground wire suspension point, and the first cross arm 20 and the second cross arm 30 are respectively provided with a plurality of wire suspension points. The insulator is a tension insulator, which is connected to the wires on both sides of the tower through a jumper string. The included angle between adjacent jumper insulator strings 50 is between 30° and 50°. The quantity of described weight 60 is four pieces, and the shape is cuboid plate, adopts cast iron material, and specification is 400mm*600mm*30mm, can select the weight 60 of different specifications according to need. Compared with the jumper string shown in Figure 2, the height is reduced by 300mm, and the weight 60 arranged in a horizontal single layer at the bottom can reduce the height by 150mm, that is, a total reduction of 450mm. Effectively control the total height of the drilling tower and reduce the wind deflection of the jumper.

Finally, it is noted that the above embodiments are only used to illustrate the technical solution of the present invention without limitation, other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and spirit of the technical solution of the present invention All should be included in the scope of the claims of the present invention.

Claims (2)

1. A kind of anti-jumping wind deflection drilling tower, it is characterized in that, comprises tower body and tower head, and described tower head is positioned at the top of described tower body; Along the direction of described tower head to described tower body respectively There are ground cross-arms, first cross-arms and second cross-arms arranged horizontally, wire jumpers are arranged on both sides of the second cross-arms, and multiple insulator strings arranged obliquely are arranged on the wire jumpers and a plurality of horizontally arranged weights, the number of the weights is four pieces, the two ends of the insulator string are respectively fixed to the top and bottom of the jumper frame, and how many are fixed at the bottom of the jumper frame two horizontal weights arranged side by side; the jumper includes a tower head jumper and a hard jumper, the tower head jumper is located above the hard jumper, and one end of the insulator string is connected to the hard jumper The tower head jumper is connected, and the other end is connected with the hard jumper; the weight is connected with the hard jumper by bolts, and is located at the bottom of the hard jumper; the weight of the weight The shape is a cuboid flat plate, made of cast iron, and the size is 400mm*600mm*30mm. 2. The jumper anti-winding drilling tower according to claim 1, characterized in that the angle between adjacent insulator strings is between 30° and 50°.

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