Y-shaped lightning protection tower

Abstract

The utility model discloses a Y-shaped lightning protection pole tower, and relates to the technical field of electric power facilities, in particular to a Y-shaped lightning protection pole tower which comprises a main pole tower body, an installation base is arranged at the upper end of the main pole tower body, an installation flange is arranged on the upper surface of the installation base, and the installation base is in threaded connection with a lightning protection insulation supporting column through the installation flange. A wiring flange is arranged at the top of the lightning protection insulation pillar, the lightning protection insulation pillar is in threaded connection with a voltage-sharing element through the wiring flange, and the side face of the wiring flange is fixedly connected with a power transmission wire. According to the utility model, the insulation pillars are in Y-shaped symmetry at the top of the pole tower, the stress is uniform, and the height of the pole tower is relatively reduced; power transmission wires pass through the two sides of the Y-shaped insulation supporting column, the distance between the wires is increased, counterattack thunder string is prevented, the insulation supporting column is designed to be a lightning protection insulation supporting column, the power transmission line has the lightning protection function at the same time, a lightning arrester does not need to be additionally installed for lightning protection, and the construction cost of the power transmission line is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to power facilities technical field, concretely is a Y type lightning protection tower. BACKGROUND

[0002] In the field of electric power equipment, the single-pole tower commonly used in the transmission line is usually a full-steel tower or a tower with a concrete pole body and a steel cross arm. The cross arm is usually made of steel structure and is used to support the conductor and keep a certain safety distance. The conventional steel pipe tower or concrete has the problems of wide transmission line corridor and high tower type. Moreover, the tower is an asymmetric structure and the stress is inconsistent. In order to meet the load force, more materials are used for the main material of the tower. The connection between the tower and the conductor uses a suspension insulator, which will cause the conductor to swing under the action of strong wind, and the windage flashover problem is easy to occur.

[0003] The cross arm of the tower is usually made of steel structure, and an insulator is used to support the conductor and the insulation. The lightning protection of the insulator usually uses a lightning arrester in parallel protection, which has the problems of high cost and difficult installation. Moreover, the lightning arrester cannot be installed on the whole line, which causes the risk of power failure in some areas. CONTENT OF THE UTILITY MODEL

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a Y type lightning protection tower, which solves the problems raised in the above background technology.

[0006] (II) Technical scheme

[0007] In order to achieve the above purpose, the utility model is implemented by the following technical scheme: a Y type lightning protection tower, comprising a main tower, the upper end of the main tower is provided with a mounting base, the upper surface of the mounting base is provided with a mounting flange, the mounting base is threadedly connected with a lightning protection insulating support through the mounting flange, the top of the lightning protection insulating support is provided with a wiring flange, the lightning protection insulating support is threadedly connected with a voltage equalizing element through the wiring flange, and the side surface of the wiring flange is fixedly connected with a power transmission conductor.

[0008] Optionally, the main tower is a steel pipe or a concrete structure.

[0009] Optionally, the lightning protection insulating support is made of composite material, the inside of the lightning protection insulating support is provided with an insulating support and a spherical gap, and the mounting flange and the wiring flange are respectively buckled at both ends of the lightning protection insulating support.

[0010] Optionally, the inside ball of the spherical gap is connected with a lightning rod ring, the number of the spherical gaps is several, and the spherical gaps are uniformly distributed in the lightning protection insulating support; the distance between the lightning rod ring and the voltage equalizing element is adjusted according to the voltage of the power transmission line; the connection position of the lightning rod ring and the spherical gap is changed, and the distance of the gap is greater than the peak voltage of the power transmission line.

[0011] Optionally, the lightning protection arc extinguishing chambers are arranged between the small-gap spherical gaps in the lightning protection insulating support.

[0012] Optionally, the lightning protection arc extinguishing chamber is composed of an arc spraying port, a spherical gap and a combustion-resistant material.

[0013] Optionally, the distance between the balls of the spherical gap is 8-10 mm, and the diameter of the ball is 10-14 mm.

[0014] Optionally, the diameter of the arc spraying port is 8-10 mm.

[0015] The utility model provides a Y type lightning protection tower rod, has the following beneficial effects:

[0016] 1, the utility model discloses the insulating support is symmetrical at the top of the tower rod and is Y type, and the stress is even and the tower rod height is relatively reduced, and the power transmission wire passes through from the both sides of the Y type insulating support, so that the distance between the wires is increased, and the back strike lightning string is prevented.

[0017] 2, the utility model discloses the insulating support is designed as the lightning protection insulating support, so that the power transmission line has lightning protection function simultaneously, and lightning protection is not needed to install the lightning arrester additionally, and the construction cost of the power transmission line is reduced.

[0018] 3, the utility model discloses the lightning protection function of the insulating support adopts the lightning attraction design of multiple gaps, and the gap is divided into one big gap and multiple small-gap series connection, and the big gap is external annular gap, and the small gap is built-in spherical gap, and the arc extinguishing port is arranged between the spherical gap.

[0019] 4, the big and small gap of the utility model makes the system voltage mainly act on the big gap, when the lightning overvoltage that the system suffers exceeds certain numerical value, the big gap is broken down, and the power frequency continues to flow through the small gap, and the arc is established between the built-in spherical gap, in the initial stage of arc establishment, the length is short, and burns between the built-in spherical gap, and the high temperature generated thereby makes the gas at the bottom of the chamber expand sharply, and the air pressure increases sharply, due to the single-end opening structure of the chamber, under the action of high air pressure, the arc is cooled and is lengthened to the built-in spherical gap, the arc path impedance becomes large, and the power frequency continues to flow is arc extinguishing cut-off in half power frequency cycle.

[0020] 5、Compared with the prior art, the fixed size gap is easier to install than other gaps that need to be adjusted, and the length and shortness precision of the large gap is easier to control, and the utility model is suitable for low cost and mass production; it has the characteristics of simple manufacturing process, low cost, strong lightning protection performance, stable operation and maintenance, etc., and is suitable for wide application; the maintenance cost is very low after operation, and it is basically maintenance-free. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is a main body structure schematic diagram of the utility model;

[0022] Fig. 2 It is an external structure schematic diagram of the lightning protection insulating support of the utility model;

[0023] Fig. 3 It is a local structure schematic diagram of the lightning protection insulating support of the utility model.

[0024] In the drawing: 1, main body pole tower; 2, lightning protection insulating support; 3, voltage-sharing element; 21, mounting flange; 22, wiring flange; 23, lightning ring; 24, lightning protection arc extinguishing chamber; 241, arc spraying port; 242, spherical gap; 243, flame-resistant material. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0026] Please refer to Figs. 1 to 3The utility model provides technical scheme: a Y type lightning protection tower, the upper end of main body tower 1 is provided with installation base, the upper surface of installation base is provided with installation flange 21, installation base is connected with lightning protection insulating support 2 through installation flange 21, the top of lightning protection insulating support 2 is provided with wiring flange 22, lightning protection insulating support 2 is connected with equalizing element 3 through wiring flange 22, equalizing element 3 is used to balance high voltage end stray capacitance, and can be used as the conductive electrode of big gap, the side surface of wiring flange 22 is fixedly connected with power transmission conductor, plays the role of supporting power transmission conductor 4, according to transmission line design, lightning protection insulating support 2 can be connected in series, changes from double line circuit to four line circuit, and the design is simple, and it is convenient to install to transform line, main body tower 1 is steel pipe or concrete structure, lightning protection insulating support 2 is made of composite material, the inside of lightning protection insulating support 2 is provided with insulating support and spherical gap 242, installation flange 21 and wiring flange 22 are buckled at the both ends of lightning protection insulating support 2 respectively, the inside ball of spherical gap 242 is connected with lightning arrester ring 23, the number of spherical gap is several, evenly distributes in the inside of lightning protection insulating support 2, the spacing between lightning arrester ring 23 and equalizing element 3 is adjusted according to the voltage of transmission line, changes the connecting position of lightning arrester ring 23 and spherical intermittent, and the gap distance is greater than the peak voltage of transmission line, the inside of lightning protection insulating support 2 is provided with lightning protection arc extinguishing chamber 24 between small gap spherical gap 242, lightning protection arc extinguishing chamber 24 makes the arc produced after spherical gap discharge extinguish quickly, and lightning protection arc extinguishing chamber 24 is composed of arc jet opening 241, spherical gap 242 and fire-resistant material 243, the distance between the ball of spherical gap 242 and ball is 8-10mm, the diameter of ball is 10-14mm, and the diameter of arc jet opening 241 is 8-10mm.

[0027] When transmission line suffers lightning overvoltage, overvoltage is introduced into equalizing element 3 through power transmission conductor, breaks down the big gap between equalizing element 3 and lightning arrester ring 23, strikes arc through small gap spherical gap 242, and finally is introduced into the earth through installation flange 21 and grounding wire. The arc between spherical gap 242 will be established between the built-in spherical gap 242, the length is short in the initial stage of arc establishment, and burns between the built-in spherical gap 242, the high temperature generated thereby makes the gas at the bottom of chamber expand sharply, and the gas pressure increases sharply. Because the chamber is a single-end opening structure, under the action of high gas pressure, the arc is cooled and is elongated outside the built-in spherical gap 242, the arc path impedance becomes large, and the power frequency continuous current is extinguished and cut off within half of the power frequency cycle, so as to achieve the purpose of relieving line overvoltage.

[0028] The utility model discloses a working principle and beneficial effect: in the utility model, the design of lightning protection Y type pole tower, its included angle setting 60 DEG, belong to triangle stable structure, stress is even and pole tower height is relatively reduced, and the transmission wire passes from the both sides of Y type insulating support, makes the distance between wire increase, prevents the lightning back strike string, and the big gap is established by voltage -sharing element 3 and the lightning -arresting ring 23, and its distance is adjusted according to the voltage difference of transmission line, and the gap distance is greater than the peak voltage of transmission line, and the small gap is composed of spherical gap 242 and arc jet mouth 241, and the distance between ball and ball is 8-10mm, and the ball diameter is 10-14mm, and the arc jet mouth 241 241 diameter is 8-10mm, and the lightning protection Y type pole tower design is reasonable, and the weight is light, and the installation is convenient, and can be used twice when the line is reconstructed, and need not dismount, and can be directly docked, and can be simultaneously suitable for large -scale production in large quantities, and have the characteristics such as simple manufacturing technology, low cost, strong lightning protection performance, stable operation and maintenance.

[0029] The above is only the preferred embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A Y-type lightning protection tower, comprising a main tower, characterized in that: The main tower is provided with an installation base at its upper end. An installation flange is provided on the upper surface of the installation base. A lightning protection insulation column is threadedly connected to the installation base through the installation flange. A wiring flange is provided on the top of the lightning protection insulation column. A voltage equalization element is threadedly connected to the lightning protection insulation column through the wiring flange. A power transmission line is fixedly connected to the side of the wiring flange.

2. A Y-type lightning protection tower according to claim 1, characterized in that: The main tower is a steel pipe or concrete structure.

3. A Y-type lightning protection tower according to claim 1, characterized in that: The lightning protection insulating support is made of composite material. The lightning protection insulating support has an internal insulating support and a spherical gap. The mounting flange and the wiring flange are respectively fastened to both ends of the lightning protection insulating support.

4. A Y-type lightning protection tower according to claim 3, characterized in that: The spherical gap has a lightning arresting ring connected to its internal sphere. There are several spherical gaps, which are evenly distributed inside the lightning protection insulation pillar. The distance between the lightning arresting ring and the voltage equalization element is adjusted according to the different voltages of the transmission line, changing the connection position between the lightning arresting ring and the spherical gap. The gap distance is greater than the peak voltage of the transmission line.

5. A Y-type lightning protection tower according to claim 1, characterized in that: Lightning protection arc-extinguishing chambers are installed between the small spherical gaps inside the lightning protection insulating pillar.

6. A Y-type lightning protection tower according to claim 5, characterized in that: The lightning protection arc-extinguishing chamber is composed of an arc-spraying nozzle, a spherical gap, and fire-resistant materials.

7. A Y-type lightning protection tower according to claim 3, characterized in that: The distance between the spheres in the spherical gap is 8-10mm, and the diameter of the spheres is 10-14mm.

8. A Y-type lightning protection tower according to claim 6, characterized in that: The diameter of the jet nozzle is 8-10mm.

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