KR102033581B1 - Pylon structure to fix processing and transmission line - Google Patents

Abstract

The present invention relates to a steel tower structure of fixing a processing transmission and distribution line, and more specifically, to a steel tower structure of fixing a processing transmission and distribution line, which is improved so as to be possible to be safely maintained by a strong wind (including a typhoon) having instantaneous velocity over 40 meters a second while abnormal weather is generated and be possible to maintain a safe extra-high voltage transmission and distribution line by corresponding to a tension change of the transmission and distribution line.

Description

Pylon structure to fix processing and transmission line

The present invention relates to a steel tower structure for fixing a process transmission and distribution line in the field of power distribution technology, and more specifically, while a weather abnormality can be safely maintained by strong winds (including typhoons) having an instantaneous speed of more than 40 meters per second while The present invention relates to a steel tower structure that fixes an improved overhead transmission and distribution line to maintain a safe transmission and distribution line in response to changes in tension.

In general, in the construction of transmission and distribution lines that are installed to transmit and distribute power generated from power plants to factories, homes, and the like, the fixed base unit, which is the foundation of the steel tower, is the foundation for firmly supporting the steel tower. It is very big.

The fixed base unit of the steel tower has a feature that the shape and scale of the foundation is determined by the uplift, unlike the basic facilities of general civil engineering, and it is somewhat different from the fixed base unit of the general structure based on the compressive force. The design method is different.

These pylons have various forms such as quadrilateral pylons, square pylons, gate pylons, vacant pylons, rotary pylons, and MC pylons in consideration of the terrain, and differ in form and height depending on the transmission power, voltage, and malformation of the track. The height is 60m, and it is usually formed in the form of a square using L-shaped steel, and the foundation is fixed to the structure in concrete.

Steel towers of transmission and distribution lines usually support three-phase, two-wire, or six wires with insulators, and the distance between the steel towers is 20 to 30 m, and the minimum height from the surface of the wires installed on the tower is based on the electrical equipment technology. In the case of a special high voltage line of 150,000 V, for example, it is 6 m.

Pylon for transmission and distribution line allows a plurality of transmission and distribution lines to be connected to each other, and these transmission and distribution lines are installed at high altitudes and are subject to a lot of climatic influences such as wind, snow and rain due to the characteristics of being installed at high altitudes. It is installed.

Transmission and distribution lines cause sag on the track after a certain time, and when strong winds such as typhoons blow, the lines shake violently up and down, causing friction between each other. It has also been the cause of large safety accidents.

To this end, periodical repairs are performed to adjust the tension of transmission and distribution lines to cope with safety accidents caused by sagging of transmission and distribution lines.

However, frequent maintenance work not only causes inconvenience to electric power users, but also hassles that require human labor.

On the other hand, lightning arresters are provided to protect the transmission and distribution lines from lightning strikes. Transmission lines are mostly overhead lines and are exposed to the outdoors, so lightning strikes frequently occur under meteorological conditions such as lightning strikes, and transport large amounts of power. Due to the nature of transmission lines, flashover failures caused by lightning strikes result in temporary or permanent power outages, and failures in power transmission can cause significant economic and social losses beyond the loss of power usage.

Thus, as shown in FIG. 1, a plurality of transmission and distribution towers 10, 11, and 12 are arranged at regular intervals, and a ground portion 20 connected to the ground is installed below the transmission and distribution towers 10, 11, and 12. A plurality of transmission and distribution lines 30 are installed through the suspension insulator 40, and a lightning arrester (not shown) is installed around the suspension insulator 40 to protect the transmission and distribution line 30.

At this time, the suspension insulator 40 is a structure in which at least nine insulators are connected in series, but schematically illustrated in FIG. 1 to explain the concept, and the overhead processing line 50 to prevent the transmission and distribution line 30 from being disconnected. This may be installed.

However, as weather abnormalities occur, strong winds (including typhoons) having instantaneous speeds exceeding 40 m / sec have been recently generated. Thus, when the tension of the transmission and distribution line 30 is severe and the buffering is difficult, the transmission and distribution line 30 is difficult. There was a high risk of a safety accident, such as breaking.

In order to improve this, a number of tension adjusting devices or suspension insulators have been disclosed, such as the following [Previous Technical Documents]. However, most of them have a structure using only elastic return force of the coil spring. Degradation during oil flow, and mainly responsible for the tension buffer function for the longitudinal direction of the transmission and distribution line 30, the buffer function for the up and down flow of the portion connected to the suspension insulator is insufficient.

Republic of Korea Patent Registration No. 10-0904199 (2009.06.16.), 'Fixed structure of suspension insulator for transmission line steel tower' Korean Patent Registration No. 10-0927116 (2009.11.10.), 'Suspension insulator for transmission line steel tower'

The present invention has been made in view of the above-mentioned problems in the prior art, and has been created to solve this problem. Its main purpose is to provide a steel tower structure for fixing an improved overhead transmission and distribution line to maintain a safe transmission and distribution line in response to changes.

The present invention is a means for achieving the above object, in the pylon structure for fixing the overhead transmission and distribution lines provided in the pylon;

The extension frame 100 is further fixed in parallel with the transmission and distribution line L at the end of the steel frame FR, which is a steel tower structure on which the suspension insulator IS is installed; The extension frame 100 is further provided with a wire sag prevention unit 200 for suppressing the sag caused by the tension change of the transmission and distribution line (L);

The wire sag prevention unit 200 includes a unit base 220 which is assembled by sliding on the protruding guide 110 protruding from the surface of the extension frame 100, one side of the unit base 220 The tension control motor 230 is fixed, the ball screw 240 arranged in the longitudinal direction of the unit base 220 is connected to the motor shaft of the tension control motor 230, the length of the ball screw 240 A portion of the reference point 242 is provided, the spiral direction on both sides of the reference point 242 is configured to face each other, the ball screw 240 is a pair of left block 250 and the right to move along this The block 260 is fitted and screwed to each other, and the slip bearing 270 is fixed to the surfaces of the left block 250 and the right block 260 symmetrically with each other, and the slip bearing 270 has a 'V' shape. The slider 280 is raised and lowered while being in contact with the slider 280. Description, and the lower sides of the slider 280, the dielectric breakdown region (210) for fixing the transmission and distribution line (L) is further provided;

The concrete wall 320 is further formed in the ground so that the concrete blocks 310 fixing the lower column 300 of the steel tower are buried, and the concrete blocks 310 are connected to one another horizontally to provide support force. The bracing steel 400 is connected and fixed to each other, and a bracing elastic unit 600 is further installed between the concrete block 310 and the concrete wall 320 and between both ends of the bracing steel 400 and the concrete block 310. Become;

The space in which the buttress steel 400 and the buttress elastic unit 600 are installed is sealed by a cover concrete block 500 to be seated on the upper surface of the concrete block 310;

The support elastic unit 600 is configured such that the upper horizontal portion 610 and the lower horizontal portion 620 are arranged in parallel to form a vertical elastic deformation space 630 therebetween, and the upper and lower horizontal portions ( The rear end of the 610 and 620 is connected to the type plate portion (U) to make a horizontal elastic deformation space 640, the type plate (U) is configured so that both ends are stepped by the height difference of the upper, lower horizontal portion (610,620). The upper end of the vertical plate part 650 is vertically connected and fixed to the end of the lower horizontal part 620, and the horizontal extension plate part 660 is connected and fixed to the lower end of the vertical plate part 650, and the horizontal extension plate part 660 is fixed. At the end of the) is formed an elastic buffer 670 inclined toward the type plate portion (U), a plurality of slits (SL) are formed in the upper, lower horizontal portions (610, 620), the vertical plate portion ( Case bolt hole (H1) is formed in the 650, the block bolt hole (H2) is formed on the outer surface of the type plate portion (U) It provides a steel tower structure for fixing the overhead transmission line.

According to the present invention, it can be safely maintained even by strong winds (including typhoons) having an instantaneous speed of more than 40m per second while meteorological abnormalities occur, and can obtain an improved effect to maintain a safe transmission and distribution line in response to the tension change of the transmission and distribution line. have.

1 is an exemplary view showing a transmission and distribution line of a general transmission and distribution tower.
Figure 2 is an exemplary view showing an example of implementing a tension buffer function in a steel tower structure for fixing the overhead transmission line according to the present invention.
3 and 4 is an exemplary view showing an example of the operation of the tension buffer function in the steel tower structure for fixing the overhead transmission line according to the present invention.
FIG. 5 is an exemplary view illustrating a modified example of the insulating gripping electrode in FIG. 3.
Figure 6 is an exemplary view for explaining an embodiment of the holding force of the lower end in the steel tower structure for fixing the overhead transmission line according to the present invention.
7 is an exemplary view of the bracing elastic unit in FIG. 6.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

Prior to the description of the present invention, the following specific structures or functional descriptions are merely illustrated for the purpose of describing embodiments according to the inventive concept, and the embodiments according to the inventive concept may be implemented in various forms, It should not be construed as limited to the embodiments described herein.

In addition, embodiments in accordance with the concepts of the present invention may be modified in various ways and may have various forms, specific embodiments will be illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments in accordance with the concept of the present invention to a particular disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

As shown in Figure 2, the steel tower structure for fixing the overhead transmission line according to the present invention is an extension frame parallel to the transmission line (L) at the end of the steel frame (FR) is a steel tower structure on which the suspension insulator (IS) is installed Tension buffer function that can be more fixed to the tension change of the transmission and distribution line (L) will be described first.

At this time, the extension frame 100 is also firmly fixed on the iron frame FR through a fixing member including a plurality of brackets as an iron structure.

In addition, the extension frame 100 is provided with a wire sag prevention unit 200 for suppressing the sag caused by the tension change of the transmission and distribution line (L).

The wire sag prevention unit 200 receives a detection signal detected from a temperature sensor and a wind speed sensor to lift the transmission and distribution line (L) to prevent sagging due to the change in tension. It includes an insulating gripping 210 that can be caught by the transmission and distribution line (L).

In addition, the air temperature sensor and the wind speed sensor may be installed on the iron frame (FR), the controller according to a specific condition, such as when the temperature exceeds 35 ℃, and when the wind speed exceeds 25m per second Under the control of the) is configured to move the wire sag prevention unit 200.

3 and 4, the wire sag prevention unit 200 includes a unit base 220, which is assembled in a sliding manner on the protruding guide 110 protruding from the surface of the extension frame 100. .

That is, the protruding guide 110 is configured to protrude in a substantially '형상' shape from the surface of the extension frame 100 so that the unit base 220 can be fitted.

Because of this, the unit base 220 may be fitted in a side through one end of the protruding guide 110 and then adjusted in a sliding manner, and then assembled in a manner of being fixed using a bolt or a screw at a desired position.

In addition, the tension control motor 230 is fixed to one side of the unit base 220, the tension control motor 230 may be installed to be driven by using a voltage drop is transformed from the transmission and distribution line (L). The ball screw 240 arranged in the longitudinal direction of the unit base 220 is connected to the motor shaft of the tension control motor 230.

At this time, the ball screw 240 is installed so that the end is fixed to the bearing and rotate in place.

In particular, a reference point 242 is provided at a part of the length of the ball screw 240, and the left and right, that is, the helical directions of both sides are opposed to each other with respect to the reference point 242.

For example, if the right side spiral (RSC) is formed on the tension control motor 230 side with respect to the reference point 242, the left side spiral (LSC) may be formed on the end side of the opposite side of the ball screw 240. have.

In addition, the ball screw 240 is fitted with a pair of the left block 250 and the right block 260 that are movable along the screw coupling.

In this case, the left block 250 and the right block 260 are also fixed to the upper and lower ends of the unit base 220 in the same manner as the unit base 220 is assembled to the protruding guide 110, respectively. It is assembled to be slidable in the longitudinal direction.

In addition, the ball screw 240 is inserted into the center of one side of the left block 250 and the right block 260, the coupling protrusion (DT) is screwed is formed.

In addition, the left block 250 and the right block 260 are assembled at a point that is symmetrical about the reference point 242.

Accordingly, the left block 250 and the right block 260 may be closer to each other or farther from each other according to the rotation direction of the tension control motor 230, and are always symmetrical about the reference point 242. You will get closer or further away.

Meanwhile, slip bearings 270 are fixed to the surfaces of the left block 250 and the right block 260 to be symmetrical with each other.

The slip bearing 270 contacts the slider 280 having a 'V' shape to guide the rise and fall of the slider 280.

At this time, the open ends of the slider 280 is bound to each other by at least one fastener 282 is configured to always maintain a constant interval of the 'V' shape.

For example, when the left block 250 and the right block 260 move in a direction away from each other, the slider 280 is engaged with the left block 250 and the right block 260, so to preserve the distance therebetween. Inevitably, the slider 280 is pushed up when the left block 250 and the right block 260 are close to each other.

In particular, since the slip bearing 270 guides the slip well while the slider 280 is fixed as a bearing so as not to be separated and separated, the slip bearing 270 is very easy and smooth with respect to the movement of the left block 250 and the right block 260. Will move.

Therefore, when the temperature rises in the cold weather, the transmission and distribution line (L) is stretched while linearly expanding as the temperature rises, which inevitably causes a sag phenomenon. Accordingly, in the present invention, the tension change is predicted in consideration of the linear expansion coefficient of the wire for each temperature change, the measurement is made, and the value is tabulated to operate the wire sag prevention unit 200 for each temperature distribution. L) can be lifted so that the tension is adjusted to suppress the deflection.

This may be controlled by using a temperature sensor and a wind speed sensor together to raise tension to raise tension to increase tension in order to suppress fluctuations due to line deflection at high wind speeds, and vice versa. .

At this time, the insulating gripping member 210 is to be raised or lowered by holding the transmission and distribution line (L), as shown in Figure 5 to increase the gripping force, the gripping body body 211 integrally fixed to the slider 280 And, the flow guide groove 212 formed in the cross-section of the holding body 211, the hook portion 213 for supporting the transmission line (L) is seated, and protrudes from one end of the hook portion 213 is A coupling protrusion 214 inserted into the flow guide groove 212, a fixing pin 215 penetrating the flow guide groove 212 up and down to bind the coupling protrusion 214, and the fixing pin 215. And an elastic spring 216 inserted into the upper and lower flow guide grooves 212 divided by the coupling protrusion 214.

Thus, when lifting the tension of the transmission line (L) under tension due to the buffering action of the elastic spring 216 is fine but by the time difference by dispersing and buffering the first force applied to the transmission line (L) for a safer lifting You will be guided.

On the other hand, in the present invention, as shown in Figure 6,

The lower column 300 of the steel tower is provided to be able to withstand high wind pressure of more than 40m per second by providing a strong holding force by providing a mutual force between each other.

That is, it is configured to increase the fixing force while suppressing the shaking without changing the steel structure of the existing steel tower. This is to implement a function comparable to that of increasing earthquake resistance.

To this end, a concrete wall 320 is further made to allow the concrete blocks 310 embedded in the ground to be fixed in order to fix the lower column 300, and a support between the concrete block 310 and the concrete wall 320. An elastic unit 600 is installed.

In addition, the concrete block 310 between the horizontal one another is connected to each other to provide a support force to each other, but the brace steel 400 is connected and fixed, wherein at both ends of the brace steel 400, respectively, the brace elastic unit 600 ) Is interposed.

Therefore, the concrete block 310 has a strong propulsion force, especially when the strong energy is applied from the outside in the aftermath of a strong wind or after an earthquake, such as strong elastic buffer by the mechanical structure in the bracing portion to the external impact energy. It can absorb and be safe from external force.

In addition, the space in which the bracing steel 400 and the bracing elastic unit 600 are installed is kept closed by the cover concrete block 500 installed to be seated on the concrete block 310, the cover concrete block 500 The upper part of) is buried in earth and sand and finished.

At this time, the bracing elastic unit 600 is configured such that the upper horizontal portion 610 and the lower horizontal portion 620 are arranged in parallel so that the vertical elastic deformation space portion 630 is formed therebetween. do.

The rear ends of the upper and lower horizontal portions 610 and 620 are connected to a U type plate part U to form a horizontal elastic deformation space 640.

Then, the vertical elastic deformation space part 630 and the horizontal elastic deformation space part 640 become one channel communicating with each other.

In this case, the type plate portion (U) is configured so that both ends are stepped by the height difference of the upper and lower horizontal portions (610 and 620), which is natural in order to be connected to the upper and lower horizontal portions (610 and 620).

In addition, an upper end of the vertical plate part 650 is vertically connected and fixed to an end of the lower horizontal part 620, and a horizontal extension plate part 660 is connected and fixed to a lower end of the vertical plate part 650, and a horizontal extension plate part ( An elastic buffer 670 is formed at the end of the 660 inclined toward the type plate (U).

In this case, the elastic shock absorbing portion 670 is provided in the form of a fork separated two apart from each other to support the dispersion is configured to further strengthen the elastic shock absorbing function.

In addition, the upper and lower horizontal portions 610 and 620 have a plurality of slits SL formed therein to improve elastic buffering force, and the vertical plate portion 650 has a case bolt ball for anchor bolting to the concrete block 310. (H1) is formed, a block bolt hole (H2) for anchor bolting the concrete wall 320 is formed on the outer surface of the type plate portion (U).

Thus, the plate portion or the horizontal portion and the vertical portion are elastically deformed and absorbed and buffered to protect the concrete block 310 from the external force when the external force such as ultra high wind pressure or earthquake is applied.

In this case, when the support elastic unit 600 is installed between the support steel (400) and the concrete block 310, the bolt bolt is fixed to the support steel (400) through the case bolt hole (H1), the block bolt ball ( Anchor bolted to the concrete block 310 through H2).

100: extension frame
200: wire sag prevention unit
300: lower pillar
400: brace steel
500: cover concrete block
600: Bracing Elastic Unit

Claims (1)

In the pylon structure for fixing the overhead transmission and distribution lines provided in the pylon;
The extension frame 100 is further fixed in parallel with the transmission and distribution line L at the end of the steel frame FR, which is a steel tower structure on which the suspension insulator IS is installed; The extension frame 100 is further provided with a wire sag prevention unit 200 for suppressing the sag caused by the tension change of the transmission and distribution line (L);
The wire sag prevention unit 200 includes a unit base 220 which is assembled by sliding on the protruding guide 110 protruding from the surface of the extension frame 100, one side of the unit base 220 The tension control motor 230 is fixed, the ball screw 240 arranged in the longitudinal direction of the unit base 220 is connected to the motor shaft of the tension control motor 230, the length of the ball screw 240 A portion of the reference point 242 is provided, the spiral direction on both sides of the reference point 242 is configured to face each other, the ball screw 240 is a pair of left block 250 and the right to move along this The block 260 is fitted and screwed to each other, and slip bearings 270 are fixed to the surfaces of the left block 250 and the right block 260 to be symmetrical to each other, and the slip bearing 270 has a 'V' shape. The slider 280 is raised and lowered while being in contact with the slider 280. Description, and the lower sides of the slider 280, the dielectric breakdown region (210) for fixing the transmission and distribution line (L) is further provided;
Concrete walls 320 are further formed in the ground so that the concrete blocks 310 fixing the lower column 300 of the steel tower are buried, and the concrete blocks 310 are connected to one another horizontally to provide support force. The bracing steel 400 is connected and fixed to each other, and the bracing elastic unit 600 is further installed between the concrete block 310 and the concrete wall 320 and between both ends of the bracing steel 400 and the concrete block 310. Become;
The space in which the buttress steel 400 and the buttress elastic unit 600 are installed is sealed by a cover concrete block 500 to be seated on the upper surface of the concrete block 310;
The support elastic unit 600 is configured such that the upper horizontal portion 610 and the lower horizontal portion 620 are arranged in parallel to form a vertical elastic deformation space 630 therebetween, and the upper and lower horizontal portions ( The rear end of the 610 and 620 is connected to the type plate portion (U) to make a horizontal elastic deformation space 640, the type plate (U) is configured so that both ends are stepped by the height difference of the upper, lower horizontal portion (610,620). The upper end of the vertical plate part 650 is vertically connected and fixed to the end of the lower horizontal part 620, and the horizontal extension plate part 660 is connected and fixed to the lower end of the vertical plate part 650, and the horizontal extension plate part 660 is fixed. At the end of the) is formed an elastic buffer 670 inclined toward the type plate portion (U), a plurality of slits (SL) are formed in the upper, lower horizontal portions (610, 620), the vertical plate portion ( Case bolt hole (H1) is formed in the 650, the block bolt hole (H2) is formed on the outer surface of the type plate portion (U) A steel tower structure for fixing a process transmission and distribution line, characterized in that.

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